A fully automatic enameled wire tinning equipment

Abstract

This utility model relates to the technical field of tinning equipment, and more particularly to a fully automatic tinning equipment for enameled wire; it is provided with a scraping device and a tinning device in sequence; the tinning device includes: a tin melting furnace, with mounting grooves on both sides of the tin melting furnace, a wire guiding part on the mounting groove, and a wire guiding channel inside the wire guiding part; a servo power device for driving the enameled wire; and a controller for controlling the servo power device; this utility model enables the continuous solder layer of the enameled wire without the need for cutting, thus increasing soldering efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of tin-dipping equipment, and in particular to a fully automatic tin-dipping equipment for enameled wire. Background Technology

[0002] As a core conductive component in electronic and electrical equipment such as motors, transformers, and inductors, the removal of the enamel coating (scraping) and the soldering of the tin layer (tin dip) at the ends of enameled wire are crucial processes for ensuring reliable electrical connections. In industrial production, the quality of the enamel scraping directly affects the bonding strength of the subsequent tin dip, while the stability of the tin dip process determines the conductivity and corrosion resistance. The processing efficiency and precision of both are of great significance for large-scale production.

[0003] Currently, the coating scraping and tinning processes of enameled wires are mostly completed in separate steps or with semi-automated equipment, which has the following technical defects: disconnected process connection: the existing coating scraping device and tinning device are mostly independent equipment, and the coated enameled wires need to be manually transferred to the tinning station. This not only increases the labor intensity, but also causes the tinning position accuracy to decrease due to positioning deviations during the transfer process, which has a significant impact on fine diameter enameled wires.

[0004] Therefore, in view of the problems in the enameled wire processing process in the existing technology, the development of a device that can realize continuous automated operation of coating and tinning, adapt to multiple specifications of enameled wire and has stable quality has become an urgent technical need to be solved in this field. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned technical problems by providing a fully automatic enameled wire tinning equipment capable of continuous tinning.

[0006] In view of this, the present invention provides a fully automatic enameled wire tinning equipment, which is provided with a tinning device and a tinning device in sequence; the tinning device includes:

[0007] A solder melting furnace, with mounting slots on both sides, a wire guide section on the mounting slot, and a wire guide channel inside the wire guide section;

[0008] Servo power unit, used to drive enameled wire;

[0009] The controller is used to control the servo power unit.

[0010] Furthermore, the controller can be set to control the stopping time of the servo actuator.

[0011] Furthermore, it also includes: tin strip, which is arranged around the enameled wire, and the through holes formed by the tin strip are connected to the wire passage.

[0012] Furthermore, it also includes a sealing part, which is disposed within the wire passage.

[0013] Furthermore, a flux box, positioned in front of the solder melting furnace, includes:

[0014] The box body is filled with foam, and the two sides of the box body have through holes for the enameled wire to pass through.

[0015] Flux is placed inside the housing.

[0016] Furthermore, it also includes:

[0017] The mounting box contains a solder melting furnace and a flux box.

[0018] The beneficial effects of this utility model are:

[0019] 1. This utility model enables the creation of a continuous solder layer on enameled wires without the need for cutting, thereby increasing soldering efficiency.

[0020] 2. The tin-removing tape of this utility model is used to clean the unsolidified liquid tin on the surface of the tin layer. The tin-removing tape is made of raw material tape and is wrapped around the enameled wire. As the enameled wire moves forward, part of the raw material tape will be embedded between the wire passage and the enameled wire. The raw material tape can be pulled and adjusted at any time to move the raw material tape horizontally, update the raw material tape in contact with the enameled wire, and replace the worn raw material tape. Attached Figure Description

[0021] Figure 1 is a schematic diagram of the main body of the tin-dipping equipment of this utility model;

[0022] Figure 2 is a three-dimensional structural schematic diagram of the spring mounting frame of this utility model;

[0023] Figure 3 is a schematic diagram of the cooling device of this utility model;

[0024] Figure 4 This is a flowchart of the tinning process for enameled wire according to this utility model.

[0025] The markings in the diagram represent: 1. Paint scraping device; 2. Tin dipping device; 3. Tin melting furnace; 4. Wire guide section; 5. Wire guide channel; 6. Servo power unit; 7. Tin cleaning strip; 8. Sealing section; 9. Flux box; 10. Mounting box. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0027] Example 1:

[0028] This embodiment provides a fully automatic enameled wire tinning equipment, which is provided with a scraping device 1 and a tinning device 2 in sequence;

[0029] Tin-dipping apparatus 2 includes:

[0030] The solder melting furnace 3 has mounting slots on both sides, and a wire guide 4 is provided on the mounting slots. The wire guide 4 has a wire guide channel 5 inside.

[0031] Servo power unit 6, used to drive enameled wire; controller, used to control servo power unit 6.

[0032] Solder scraping devices are existing technology; the structure of enameled wire generally includes:

[0033] 1. Positioning mechanism: Fix the enameled wire to ensure the accuracy of the scraping position (length, circumference range) and prevent the scraping from shifting or damaging the core wire due to wire shaking.

[0034] Common form: V-groove positioning: A groove is formed by two symmetrical V-shaped blocks, which is fixed by the weight of the enameled wire itself or the pressure of a spring. It is suitable for enameled wires with smaller diameters.

[0035] Gripper positioning: The enameled wire is clamped by pneumatic / electric grippers (such as silicone or metal materials). The clamping force is adjustable to avoid damaging the wire. It is suitable for enameled wires of various diameters.

[0036] Tube-type positioning: The wire is guided through a tube (with a smooth inner wall) that matches the diameter of the enameled wire to ensure axial straightness. It is often used for long-distance enameling.

[0037] 2. Paint scraping actuator (core working component): Mechanical paint scraping actuator, blade type.

[0038] Structure: Composed of carbide or high-speed steel blades (single-edged / multi-edged, with curved or right-angled cutting edges), typically 2-4 blades (symmetrically distributed around the circumference to ensure even paint scraping).

[0039] Features: Low cost, suitable for removing thick paint (such as oil-based paint and enamel paint), but requires precise adjustment of blade pressure to avoid scratching the core wire.

[0040] Grinding wheel / grinding wheel type: Structure: Composed of high-speed rotating grinding wheel (alumina, silicon carbide material) or fiber grinding wheel, with the grinding wheel axis perpendicular to the enameled wire or at a certain angle (usually 30°-45°).

[0041] Features: Removes paint by friction and polishing, suitable for thick-diameter enameled wires (e.g., ≥1mm), but may produce a lot of paint debris, requiring a cleaning mechanism.

[0042] Rotary file type: Structure: The file head is conical or cylindrical with fine teeth on the surface, and it contacts the paint by rotating at high speed (1000-5000r / min).

[0043] Features: Suitable for painting irregular areas (such as curved ends), but less efficient and mostly used for small-batch production.

[0044] 3. The drive mechanism provides power to the actuator and controls its movement (rotation, translation, oscillation, etc.):

[0045] Electric drive: stepper motor (controls the paint scraping length with an accuracy of ±0.05mm), servo motor (controls the grinding wheel speed or the movement of the laser galvanometer), and micro motor (drives the blade rotation).

[0046] Pneumatic drive: cylinder (drives the blade to reciprocate, speed adjustable, suitable for intermittent paint scraping), air motor (drives the grinding wheel to rotate, cost is lower than electric motor).

[0047] Hydraulic drive: Hydraulic cylinder (provides high thrust for heavy-duty scraping devices for thick-diameter enameled wire 1).

[0048] 4. The adjustment mechanism adapts to different specifications of enameled wire (diameter 0.05-5mm) and coating requirements: Spacing adjustment: The distance between the blade / grinding wheel and the enameled wire is adjusted by the screw / slider (e.g., rotating the screw clockwise moves the blade closer to the wire, increasing the coating depth).

[0049] Length adjustment: The movement stroke of the actuator is controlled by a limit block or photoelectric sensor (e.g., the paint scraping length is set to 5mm, and it will automatically stop after exceeding this length).

[0050] Pressure adjustment: Adjust the pressure of the blade / grinding wheel on the paint by means of a spring or air valve (avoid excessive pressure that may damage the core wire, or insufficient pressure that may result in incomplete paint scraping).

[0051] Mechanical blade type paint scraping device 1 Working process: ① Positioning and fixing: Insert the end of the enameled wire into the positioning mechanism (such as a V-groove), and the jaws close and clamp to ensure that the area to be scraped (usually 5-20mm from the end) is exposed.

[0052] ② Parameter adjustment: According to the diameter of the enameled wire (e.g., 0.8mm), rotate the adjustment knob to make the spacing between the three symmetrically distributed blades slightly smaller than the diameter of the wire (to ensure that the blades just contact the enamel coating without damaging the copper core).

[0053] ③ Paint scraping execution: Turn on the switch, the pneumatic drive mechanism drives the blade to rotate at a speed of 300r / min, and at the same time the electric push rod pushes the blade to move along the axial direction of the enameled wire (speed 5mm / s), the blade edge cuts and peels off the paint.

[0054] ④ Reset complete: After reaching the set length, the drive mechanism stops, the blade resets, the gripper releases, the enameled wire with the paint scraped off is removed, and the paint debris is sucked away by the bottom vacuum cleaner.

[0055] The tin-immersion device 2 is a device used to solder a tin layer onto the uncoated enameled wire. It includes a tin-melting furnace 3, which typically consists of a furnace body, a heating system, a temperature control system, and other components.

[0056] The furnace body includes: outer shell: generally made of welded steel plates, which has a certain strength and rigidity, can protect the internal components, and also serves to support the entire solder melting furnace 3.

[0057] Lining: The lining material is mostly ceramic fiber, refractory bricks, and other materials with good high-temperature resistance and thermal insulation properties. Its function is to reduce heat loss, improve thermal efficiency, and at the same time protect the outer shell from high temperatures, thus extending the service life of the furnace.

[0058] Solder bath: Located inside the furnace, it is the part that directly holds the solder. It is usually made of corrosion-resistant and high-temperature-resistant materials such as stainless steel and titanium alloy.

[0059] The heating system includes:

[0060] Heating elements: Common heating elements include resistance wires, heating tubes, ceramic heating elements, and medium-frequency induction heating coils. Resistance wires and heating tubes have simple structures and low costs, making them suitable for small solder melting furnaces.

[0061] Ceramic heating elements have advantages such as high temperature resistance, oxidation resistance, and long lifespan; medium frequency induction heating coils have the characteristics of fast heating speed, high efficiency, and precise temperature control, and are often used in large-scale solder melting furnaces or furnaces with high temperature control requirements.

[0062] Heating control circuit: mainly used to control the working status of the heating element and adjust the heating power of the solder melting furnace 3.

[0063] It can automatically adjust the power-on time or current of the heating element according to the instructions of the temperature control system to achieve the set temperature.

[0064] The temperature control system includes:

[0065] Temperature sensor: Generally, a thermocouple or resistance temperature detector (RTD) is used. It is installed near or inside the molten solder bath to monitor the temperature of the molten solder in real time and convert the temperature signal into an electrical signal to be transmitted to the temperature controller.

[0066] Temperature controller: It usually adopts a microcomputer chip PID self-tuning control circuit with temperature compensation function, which can unify the set temperature, displayed temperature and actual furnace temperature, so that the temperature fluctuation is controlled within a small range, such as ±2℃.

[0067] The solder melting furnace 3 has mounting slots on both sides, and a wire guide 4 is provided on the mounting slot. The wire guide 4 is inserted into the mounting slot and sealed with a high-temperature resistant sealing material, such as ceramic fiber products. The wire guide 4 has a wire guide channel 5 with the same diameter as the enameled wire. The enameled wire is pulled by a servo power device 6 so that the unenamel layer of the enameled wire is immersed in the solder melting furnace 3. The dwell time is adjusted according to the thickness of the enameled wire.

[0068] The servo power unit 6 consists of five parts: a drive system, a transmission mechanism, a tension control mechanism, a guide and positioning component, and a control system. Each part works together to achieve precise pulling of the enameled wire. This is existing technology, and the specific structure will not be described in detail.

[0069] The controller can be set to control the stopping time of the servo actuator.

[0070] The control system includes a controller, which presets pulling parameters (length, speed, tension value) and controls the motor to start, stop, and rotate in both directions (such as reciprocating pulling in a winding machine) through program logic, and is linked with upstream / downstream equipment (such as paint scraping device 1 and cutting machine).

[0071] The above structure can achieve a continuous solder layer on the enameled wire without the need for cutting, thus increasing soldering efficiency.

[0072] Example 2:

[0073] This embodiment provides a fully automatic enameled wire tinning equipment, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0074] Also includes:

[0075] Tin strip 7 is arranged around the enameled wire, and the through hole formed by the tin strip 7 is connected to the wire passage 5.

[0076] The tin removal tape 7 is used to clean the unsolidified liquid tin on the surface of the tin layer. The tin removal tape 7 uses raw material tape and is wrapped around the enameled wire. As the enameled wire moves forward, part of the raw material tape will be embedded between the wire passage 5 and the enameled wire. The raw material tape can be pulled and adjusted at any time to move the raw material tape horizontally, update the raw material tape in contact with the enameled wire, and replace the worn raw material tape.

[0077] Example 3:

[0078] This embodiment provides a fully automatic enameled wire tinning equipment, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0079] Also includes:

[0080] Sealing part 8 is provided inside the wire passage 5.

[0081] The sealing part 8 consists of two or more sealing rings connected together to form a whole, which facilitates installation and forms multiple cavities to achieve multi-stage buffering of leakage and better sealing.

[0082] The flux box 9 is located in front of the solder melting furnace 3. The flux box 9 includes: a box body, which is filled with sponge and has through holes on both sides for the enameled wire to pass through; and flux, which is placed in the box body.

[0083] Flux is used to remove the oxide layer on the surface of the substrate, reduce the surface tension of the solder, promote the uniform spread of solder, and form a strong solder joint. The flux is a liquid. In this embodiment, the flux is a liquid of rosin dissolved in solvents such as alcohol and isopropanol. The flux is absorbed by a sponge and applied to the enameled wire.

[0084] Also includes:

[0085] Mounting box 10, which contains solder melting furnace 3 and flux box 9.

[0086] The solder melting furnace 3 and the flux box 9 are installed inside the mounting box 10 and are connected to the mounting box 10 by bolts, making it easier to position the solder melting furnace 3 and the flux box 9.

[0087] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms fall within the scope of protection of this application.

Claims

1. A fully automatic enameled wire tinning equipment, comprising a tinning device (1) and a tinning device (2) in sequence; characterized in that, The tin-dipping apparatus (2) includes: Solder melting furnace (3), Solder melting furnace (3) has mounting slots on both sides, and wire passing part (4) is provided on the mounting slots, and wire passing channel (5) is provided in the wire passing part (4); Servo power unit (6), servo power unit (6) is used to drive enameled wire; The controller is used to control the servo power unit (6).

2. The fully automatic enameled wire tinning equipment according to claim 1, characterized in that, The controller can be set to control the stopping time of the servo actuator.

3. The fully automatic enameled wire tinning equipment according to claim 1, characterized in that, Also includes: Tin strip (7) is arranged around the enameled wire, and the through hole formed by the tin strip (7) is connected to the wire passage (5).

4. The fully automatic enameled wire tinning equipment according to claim 1, characterized in that, Also includes: The sealing part (8) is provided in the wire passage (5).

5. The fully automatic enameled wire tinning equipment according to claim 1, characterized in that, A soldering box (9) is placed in front of the solder melting furnace (3). The soldering box (9) includes: The box body is filled with foam, and the two sides of the box body have through holes for the enameled wire to pass through. Flux is placed inside the housing.

6. The fully automatic enameled wire tinning equipment according to claim 1, characterized in that, Also includes: Mounting box (10), which contains a solder melting furnace (3) and a flux box (9).

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