A method and apparatus for automatically removing the insulation from enameled wire

Abstract

The application discloses a method and device for automatically scraping off the insulating layer of an enameled wire, and belongs to the field of mechanical processing. The method comprises the following steps: the enameled wire is passed through a guide sleeve and tightly pressed on an adjustable positioning block, so that the enameled wire is axially fixed; a driving power source is driven to continuously rotate a cam 5; through the rotation of the cam 5, a compound motion cycle is synchronously controlled to be executed by a scraper mechanism; the compound motion cycle is repeatedly executed, and is matched with the periodic rotation of the enameled wire until the insulating layer is completely scraped off. The application can efficiently and completely remove the insulating layer under the premise of guaranteeing zero damage to the wire base, and simultaneously meets the requirements of high reliability and simple operation.

Description

Technical Field

[0001] This invention belongs to the field of machining, and specifically relates to a method and apparatus for automatically scraping off the insulation layer of enameled wire. Background Technology

[0002] In the manufacturing and maintenance of motors, electrical appliances, and aerospace products, the removal of the enamel coating from the ends of enameled wires is a critical process. Traditional methods for removing the enamel coating mainly include chemical methods, laser ablation, mechanical scraping, and grinding / milling.

[0003] Chemical methods, which use peeling solutions to corrode the insulation layer, are simple to operate but suffer from low efficiency, harm to human health, environmental pollution, and a tendency to corrode the metal substrate of the conductor. Laser ablation, while highly precise, involves expensive equipment and generates high temperatures during the ablation process, leading to the formation of a resolidified layer and microcracks on the metal surface. This severely degrades the mechanical properties and long-term conductivity stability of the conductor, and is therefore prohibited in aerospace and other fields where component reliability is extremely critical.

[0004] Mechanical removal methods are currently the mainstream approach, but existing technologies each have significant drawbacks. For example, while fixed multi-claw scrapers or rotary scrapers can avoid thermal damage, their scraping action is primarily designed for round wires. For flat wires with rectangular cross-sections, the insulation layer at the edges is difficult to completely remove, leaving residue. Forced scraping can easily damage the wire edges or result in uneven scratches. Furthermore, while high-precision milling or grinding equipment can process the surface of flat wires through multi-axis linkage control, it is essentially a cutting process. This presents problems such as difficulty in precisely controlling the removal amount, thinning of the wire substrate, material waste, and complex equipment structure with high costs.

[0005] In summary, existing technologies have failed to adequately address the core challenge of efficiently, effectively, and adaptably removing insulation from round / flat wires without damaging the physical properties of the conductor substrate. Particularly for applications requiring high reliability, there is an urgent need for an automated insulation removal device that is non-electrical, non-cutting, relatively simple in structure, and capable of precisely adapting to different wire types. Summary of the Invention

[0006] The technical problem to be solved:

[0007] To overcome the shortcomings of existing technologies, this invention provides a method and apparatus for automatically scraping off the insulation layer of enameled wire. A cam mechanism drives the scraper to open and close, simultaneously performing reciprocating scraping. This invention efficiently and thoroughly removes the insulation layer while ensuring zero damage to the conductor substrate, and also meets the requirements of high reliability and ease of operation.

[0008] The technical solution of the present invention is: a method for automatically scraping off the insulation layer of enameled wire, comprising the following steps:

[0009] Pass the enameled wire 18 through the guide sleeve 17 and press it against the adjustable positioning block 28 to fix it axially.

[0010] The driving power source makes cam 5 rotate continuously;

[0011] The rotation of the cam 5 synchronously controls the scraper mechanism to perform a compound motion cycle, which includes:

[0012] Radial opening stage: The outer peripheral action surface of the cam 5 drives the support mechanism, causing at least two scrapers 15 in the scraper mechanism to overcome the tension of the elastic element and open radially, so that the scraper blades are separated from or away from the surface of the enameled wire.

[0013] Axial feed stage: When the scraper 15 is radially open or remains open, the linkage mechanism is driven by the eccentric annular groove working surface of the cam 5, which drives the entire scraper mechanism to move along the enameled wire axis to the preset scraping starting point.

[0014] Radial closing and scraping stage: As the cam 5 continues to rotate, the support mechanism releases the constraint on the scraper mechanism, and the scraper mechanism closes radially under the tension of the elastic element, so that the scraper blade presses against the enameled wire insulation layer; at the same time, the linkage mechanism, driven by the cam 5, drives the scraper mechanism to move in the opposite direction along the enameled wire axis, thereby scraping off the insulation layer at a set distance.

[0015] Repeat the compound motion cycle, in conjunction with the periodic rotation of the enameled wire, until the insulation layer is completely scraped off.

[0016] A further technical solution of the present invention is that the clamping force of the scraper mechanism on the enameled wire when it is radially closed can be controlled by adjusting the preload of the elastic element to adapt to insulation layers of different thicknesses and materials.

[0017] An apparatus for automatically scraping off the insulation layer of enameled wire to implement the method, comprising:

[0018] The frame, including a base plate 1 and vertical plates 2 and guide plates 26 mounted thereon, serves as the supporting component for the entire device;

[0019] The power mechanism is used to provide rotational power;

[0020] The motion conversion mechanism includes a cam 5, which is rotatably connected to the vertical plate 2 via a first rotating shaft 3 and is driven to rotate by the power mechanism.

[0021] The scraper mechanism includes a first scraper seat 11 and a second scraper seat 12 that can be opened and closed relative to each other, and a scraper 15 mounted thereon;

[0022] The radial opening control mechanism includes a push rod assembly that engages with the outer peripheral working surface of the cam 5. The push rod assembly converts the rotational torque into thrust to drive the support mechanism to change the tilt angle, thereby controlling the opening and closing of the scraper mechanism. In other words, the rotational motion of the cam is converted into the radial opening action of the first scraper seat 11 and the second scraper seat 12.

[0023] The axial reciprocating drive mechanism includes a linkage mechanism that engages with the eccentric annular groove working surface of the cam 5. The other end of the linkage mechanism is connected to the scraper mechanism to convert the rotational motion of the cam into the axial reciprocating linear motion of the scraper mechanism.

[0024] A reset elastic element is connected between the first scraper seat 11 and the second scraper seat 12 to provide radial closing clamping force for the scraper;

[0025] The wire positioning mechanism includes a guide sleeve 17 for guiding and supporting the enameled wire 18, and an adjustable positioning block 28.

[0026] A further technical solution of the present invention is: the cam 5 is a replaceable module, and the eccentric ring groove profile and / or outer contour design of different cam modules are different to correspond to different scraping stroke lengths; the eccentric ring groove is opened on the disk surface of the cam and serves as the motion track of one end of the linkage mechanism.

[0027] A further technical solution of the present invention is: the radial opening control mechanism includes a linked top rod assembly and a support mechanism;

[0028] The push rod assembly includes a push rod 21 that can slide along the push rod sleeve 22. One end of the push rod 21 is rotatably connected to a second roller 19 via a fourth rotating shaft 20. The second roller 19 contacts and follows the outer contour of the cam 5, and its other end contacts the support mechanism. The push rod sleeve 22 is mounted on the vertical plate 2.

[0029] The support mechanism includes a support frame 23, one end of which contacts the other end of the top rod 21, and the middle part is rotatably connected to the upright plate 2 via a support frame seat 27; the support frame 23 is rotatably connected to the second and third rollers 24 on both sides of the support frame seat 27 via a fifth rotating shaft 25, and the two third rollers 24 are respectively in contact with the opposite surfaces of the first scraper seat 11 and the second scraper seat 12;

[0030] The movement of the push rod assembly is controlled by the outer peripheral working surface of the cam 5, which in turn pushes the support mechanism to adjust the tilt angle. As the angle between the support mechanism and the first scraper seat 11 and the second scraper seat 12 approaches 90°, the scraper mechanism opens radially. As the angle between the support mechanism and the first scraper seat 11 and the second scraper seat 12 decreases from 90°, the scraper mechanism closes radially.

[0031] A further technical solution of the present invention is: the axial reciprocating drive mechanism includes a linkage mechanism, the linkage mechanism includes a linkage 8 that can slide along the linkage support sleeve 9, one end of which is rotatably connected to a roller 7 via a second rotating shaft 6, the roller 7 being slidably installed in the eccentric annular groove of the cam 5, and the other end being fixedly connected to or rotatably connected to a third rotating shaft 10; the linkage support sleeve 9 is installed on the vertical plate 2;

[0032] The third rotating shaft 10 is slidably installed in a horizontal slide groove provided on the vertical plate 2, and can slide back and forth in a straight line along the slide groove;

[0033] When the cam 5 rotates, it drives the roller 7 through the eccentric ring groove, and then drives the third rotating shaft 10 and the entire scraper mechanism to reciprocate axially along the slide groove through the connecting rod 8.

[0034] A further technical solution of the present invention is: the scraper mechanism includes a first scraper seat 11 and a second scraper seat 12 symmetrically mounted on the third rotating shaft 10. The first scraper seat 11 and the second scraper seat 12 are located on both sides of the connecting rod 8, one end of which is rotatably connected to the third rotating shaft 10, and the other end is equipped with a scraper 15.

[0035] A further technical solution of the present invention is: the reset elastic element is a spring 14, the two ends of which are respectively connected to the first scraper seat 11 and the second scraper seat 12 by a hanging pin 13, and the preload of the spring 14 is adjustable.

[0036] A further technical solution of the present invention is: the adjustable positioning block 28 of the wire positioning mechanism is installed on the upright plate 2, and its position is adjustable, and it is used to position the top end of the enameled wire 18.

[0037] A further technical solution of the present invention is: the guide sleeve 17 is installed on the guide plate 26 perpendicular to the upright plate 2, and is positioned opposite to the blade of the scraper 15. It is made of non-metallic material to prevent scratching the surface of the enameled wire.

[0038] The guide sleeve 17 is provided with replaceable modules with different inner hole shapes and sizes, including circular holes and rectangular holes, to accommodate circular or flat enameled wires.

[0039] Beneficial effects

[0040] The beneficial effects of this invention are as follows: This invention adopts the principle of pure mechanical scraping, which completely avoids the heat-affected zone, resolidified layer and microcracks generated by electrical discharge machining methods such as laser ablation, fundamentally ensuring the mechanical properties and long-term conductivity stability of the conductor substrate, and is particularly suitable for fields such as aviation, aerospace and military industries where the reliability requirements of parts are extremely high.

[0041] This invention achieves a compound motion cycle of "radial opening - axial feeding - radial closing and clamping - axial scraping" for the scraper through precise design of the cam profile. This mechanism ensures that the scraper only contacts the wire with controllable pressure during reverse scraping, effectively avoiding problems such as excessively deep scratches and damage to the wire caused by unstable manual operation or equipment vibration.

[0042] For flat wires, the invention features a unique radial opening and closing mechanism of the scraper, which can perfectly cover the edges and corners, thoroughly removing the insulation layer at the edges and corners. This solves the problems of easy residue in existing scraping technology and difficulty in edge treatment in milling technology. Attached Figure Description

[0043] Figure 1 This is a diagram showing the component connection relationship of an automatic rounding and flattening enameled wire insulation device according to an embodiment of the present invention;

[0044] Figure 2 This is a schematic diagram of the overall structure of an automatic rounding and flattening enameled wire insulation device according to an embodiment of the present invention;

[0045] Figure 3 This is a top view of an automatic rounding and flattening enameled wire insulation device according to an embodiment of the present invention;

[0046] Explanation of reference numerals in the attached drawings: 1. Base plate, 2. Vertical plate, 3. First rotating shaft, 4. Key, 5. Cam, 6. Second rotating shaft, 7. Roller, 8. Connecting rod, 9. Connecting rod support sleeve, 10. Third rotating shaft, 11. First scraper seat, 12. Second scraper seat, 13. Hanging pin, 14. Spring, 15. Scraper, 16. Scraper mounting screw, 17. Guide sleeve, 18. Enamelled wire, 19. Second roller, 20. Fourth rotating shaft, 21. Top rod, 22. Top rod sleeve, 23. Support frame, 24. Third roller, 25. Fifth rotating shaft, 26. Guide plate, 27. Support frame seat, 28. Adjustable positioning block. Detailed Implementation

[0047] The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0048] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0049] Currently, the common methods for removing the insulation layer from enameled wires are manual scraping and laser ablation. Manual scraping has extremely low processing efficiency and results in inconsistent wire quality. Laser ablation is a form of electrical discharge machining (EDM), which creates a resolidified layer on the ablated metal surface, generating numerous microcracks. This deteriorates the mechanical properties of the ablated area, making it prone to fatigue points and hidden cracks after bending. It also affects the stability of current conduction and can lead to quality issues under extreme working conditions. Therefore, this invention proposes an automatic method for scraping the insulation layer of enameled wire, which includes the following steps:

[0050] Pass the enameled wire 18 through the guide sleeve 17 and press it against the adjustable positioning block 28 to fix it axially.

[0051] The driving power source makes cam 5 rotate continuously;

[0052] The rotation of the cam 5 synchronously controls the scraper mechanism to perform a compound motion cycle, which includes:

[0053] Radial opening stage: The outer peripheral action surface of the cam 5 drives the support mechanism, causing at least two scrapers 15 in the scraper mechanism to overcome the tension of the elastic element and open radially, so that the scraper blades are separated from or away from the surface of the enameled wire.

[0054] Axial feed stage: When the scraper 15 is radially open or remains open, the linkage mechanism is driven by the eccentric annular groove working surface of the cam 5, which drives the entire scraper mechanism to move along the enameled wire axis to the preset scraping starting point.

[0055] Radial closing and scraping stage: As the cam 5 continues to rotate, the support mechanism releases the constraint on the scraper mechanism, and the scraper mechanism closes radially under the tension of the elastic element, so that the scraper blade presses against the enameled wire insulation layer; at the same time, the linkage mechanism, driven by the cam 5, drives the scraper mechanism to move in the opposite direction along the enameled wire axis, thereby scraping off the insulation layer at a set distance.

[0056] Repeat the compound motion cycle, in conjunction with the periodic rotation of the enameled wire, until the insulation layer is completely scraped off.

[0057] In one embodiment, the clamping force of the scraper mechanism on the enameled wire when it is radially closed can be controlled by adjusting the preload of the elastic element to accommodate insulation layers of different thicknesses and materials.

[0058] The present invention also proposes an apparatus for automatically scraping off the insulation layer of enameled wire to implement the method, comprising:

[0059] The frame, including a base plate 1 and vertical plates 2 and guide plates 26 mounted thereon, serves as the supporting component for the entire device;

[0060] The power mechanism is used to provide rotational power;

[0061] The motion conversion mechanism includes a cam 5, which is rotatably connected to the vertical plate 2 via a first rotating shaft 3 and is driven to rotate by the power mechanism.

[0062] The scraper mechanism includes a first scraper seat 11 and a second scraper seat 12 that can be opened and closed relative to each other, and a scraper 15 mounted thereon;

[0063] The radial opening control mechanism includes a push rod assembly that engages with the outer peripheral working surface of the cam 5. The push rod assembly converts the rotational torque into thrust to drive the support mechanism to change the tilt angle, thereby controlling the opening and closing of the scraper mechanism. In other words, the rotational motion of the cam is converted into the radial opening action of the first scraper seat 11 and the second scraper seat 12.

[0064] The axial reciprocating drive mechanism includes a linkage mechanism that engages with the eccentric annular groove working surface of the cam 5. The other end of the linkage mechanism is connected to the scraper mechanism to convert the rotational motion of the cam into the axial reciprocating linear motion of the scraper mechanism.

[0065] A reset elastic element is connected between the first scraper seat 11 and the second scraper seat 12 to provide radial closing clamping force for the scraper;

[0066] The wire positioning mechanism includes a guide sleeve 17 for guiding and supporting the enameled wire 18, and an adjustable positioning block 28.

[0067] In one embodiment, the cam 5 is a replaceable module, and different cam modules have different eccentric ring groove profiles and / or outer contour designs to correspond to different scraping stroke lengths; the eccentric ring groove is opened on the disk surface of the cam and serves as the motion track at one end of the linkage mechanism.

[0068] In one embodiment, the radial opening control mechanism includes a linked push rod assembly and a support mechanism;

[0069] The push rod assembly includes a push rod 21 that can slide along the push rod sleeve 22. One end of the push rod 21 is rotatably connected to a second roller 19 via a fourth rotating shaft 20. The second roller 19 contacts and follows the outer contour of the cam 5, and its other end contacts the support mechanism. The push rod sleeve 22 is mounted on the vertical plate 2.

[0070] The support mechanism includes a support frame 23, one end of which contacts the other end of the top rod 21, and the middle part is rotatably connected to the upright plate 2 via a support frame seat 27; the support frame 23 is rotatably connected to the second and third rollers 24 on both sides of the support frame seat 27 via a fifth rotating shaft 25, and the two third rollers 24 are respectively in contact with the opposite surfaces of the first scraper seat 11 and the second scraper seat 12;

[0071] The movement of the push rod assembly is controlled by the outer peripheral working surface of the cam 5, which in turn pushes the support mechanism to adjust the tilt angle. As the angle between the support mechanism and the first scraper seat 11 and the second scraper seat 12 approaches 90°, the scraper mechanism opens radially. As the angle between the support mechanism and the first scraper seat 11 and the second scraper seat 12 decreases from 90°, the scraper mechanism closes radially.

[0072] In one embodiment, the axial reciprocating drive mechanism includes a linkage mechanism, which includes a linkage 8 that can slide along the linkage support sleeve 9. One end of the linkage 8 is rotatably connected to a roller 7 via a second rotating shaft 6. The roller 7 is slidably installed in the eccentric annular groove of the cam 5. The other end is fixedly connected to or rotatably connected to a third rotating shaft 10. The linkage support sleeve 9 is installed on the vertical plate 2.

[0073] The third rotating shaft 10 is slidably installed in a horizontal slide groove provided on the vertical plate 2, and can slide back and forth in a straight line along the slide groove;

[0074] When the cam 5 rotates, it drives the roller 7 through the eccentric ring groove, and then drives the third rotating shaft 10 and the entire scraper mechanism to reciprocate axially along the slide groove through the connecting rod 8.

[0075] In one embodiment, the scraper mechanism includes a first scraper seat 11 and a second scraper seat 12 symmetrically mounted on a third rotating shaft 10. The first scraper seat 11 and the second scraper seat 12 are located on both sides of the connecting rod 8, with one end of each scraper seat 11 rotatably connected to the third rotating shaft 10 and the other end of each scraper seat 12 mounted opposite each other.

[0076] In one embodiment, the reset elastic element is a spring 14, with its two ends connected to the first scraper seat 11 and the second scraper seat 12 respectively via a hanging pin 13, and the preload of the spring 14 is adjustable.

[0077] In one embodiment, the adjustable positioning block 28 of the wire positioning mechanism is mounted on the upright plate 2 and its position is adjustable, used to position the top end of the enameled wire 18.

[0078] In one embodiment, the guide sleeve 17 is mounted on the guide plate 26 perpendicular to the upright plate 2, positioned opposite the blade of the scraper 15, and is made of non-metallic material to prevent scratching the surface of the enameled wire.

[0079] The guide sleeve 17 is provided with replaceable modules with different inner hole shapes and sizes, including circular holes and rectangular holes, to accommodate circular or flat enameled wires.

[0080] The above technical solution will be further analyzed below with reference to the accompanying drawings:

[0081] In one embodiment, refer to Figure 1-3 As shown, a device for removing the insulation layer of a flat, multi-layered wire includes:

[0082] The upright plate 2 is fixedly connected to the base plate 1. The first rotating shaft 3 is mounted on the upright plate 2 and is fixed in position, allowing it to rotate along its axis. The cam 5 is mounted on the first rotating shaft 3, transmits torque via key 4, is fixed in position, and can rotate together with the first rotating shaft 3.

[0083] The roller 7 is rotatably connected to the connecting rod 8 via the second rotating shaft 6 and can rotate along the axis of the second rotating shaft 6. The position of the roller 7 is in the eccentric groove of the cam 5. The connecting rod support sleeve 9 is fixedly installed on the vertical plate 2 to provide support for the connecting rod 8.

[0084] The connecting rod 8, the first scraper seat 11, and the second scraper seat 12 are all rotatably connected to the third rotating shaft 10 and can rotate along the axis of the third rotating shaft 10. Their axial positions are fixed, with the connecting rod 8 in the center.

[0085] One end of the third rotating shaft 10 is installed in the slide groove of the vertical plate 2, and can slide left and right along the slide groove. The scraper 15 is fixedly installed on the first scraper seat 11 and the second scraper seat 12 by scraper mounting screws 16.

[0086] The third roller 24 is mounted on the support frame 23 via the fifth pivot 25. The third roller 24 is rotatable about the axis of the fifth pivot 25. The support frame 23 is mounted on the support frame base 27 and is rotatable about the axis of the support frame base 27. The support frame base 27 is a pin fixedly mounted on the upright plate 2. The support frame 23 includes a short plate and a long plate. The two ends of the short plate are mounted parallel to one end of the long plate via two fifth pivots 25. The third roller 24 is respectively mounted on the two fifth pivots 25. The short plate and the long plate are rotatably connected to the pin that serves as the support frame base 27.

[0087] Four hanging pins 13 are fixedly installed on the first scraper seat 11 and the second scraper seat 12, and two springs 14 are installed on the four hanging pins 13.

[0088] The guide plate 26 is installed on the vertical plate 2, and its position can be adjusted along the axis of the slide groove.

[0089] The second roller 19 is rotatably connected to the top rod 21 via the fourth rotating shaft 20 and can rotate along the axis of the fourth rotating shaft 20. The top rod 21 is installed in the groove of the top rod sleeve 22 and can slide left and right along the axis of the groove.

[0090] The guide sleeve 17 is made of non-metallic material and is fixedly installed on the guide plate 26. It can provide support and protection for the enameled wire. The guide plate 26 is fixedly installed on the vertical plate 2.

[0091] In the above description, the rotatable and sliding parts are fitted with a small clearance, while the fixed mounting parts remain in the same spatial position.

[0092] Working principle:

[0093] The enameled wire 18 passes through the guide sleeve 17 and is fixed on the adjustable positioning block 28. The motor drives the first rotating shaft 3 and cam 5 to rotate counterclockwise at 80-100 revolutions per minute. The roller 7 rolls in the eccentric groove of the cam 5. As the eccentricity increases, the roller 7 drives the connecting rod 8, the third rotating shaft 10, the first scraper seat 11, the second scraper seat 12, and the scraper 15 to move to the right along the slide axis under the constraint and support of the connecting rod support sleeve 9 and the vertical plate 2. At the same time, the second roller 19 rolls along the outer surface of the cam 5 to the highest point of the cam 5 and drives the push rod 21 to move to the lower right along the groove axis of the push rod sleeve 22 under the support of the push rod sleeve 22. The push rod sleeve 22 pushes the support frame 23, and the support frame 23 drives the third roller 24. The fifth rotating shaft 25 rotates counterclockwise around the support frame 27. As the angle between the axis of the support frame 23 and the vertical decreases, the two third rollers 24 open the first scraper seat 11 and the second scraper seat 12. At this time, the blade of the scraper 15 opens and, with the change of the eccentricity of the eccentric groove of the cam 5 and the interaction between the roller 7, drives the connecting rod 8, the third rotating shaft 10, the first scraper seat 11, the second scraper seat 12, and the scraper 15 to move to the right to the right stop point. During the movement, the third rotating shaft 10 moves to the right along the sliding groove of the vertical plate 2, and together with the two third rollers 24, it provides support for the first scraper seat 11 and the second scraper seat 12.

[0094] After the scraper 15 reaches the right stop point, the cam 5 continues to rotate, and the second roller 19 falls from the highest point of the outer circle of the cam 5. Under the action of the spring 14, the support frame 23 returns to its original angle. At this time, the first scraper seat 11 and the second scraper seat 12 drive the scraper 15 blade to exert pressure on the enameled wire, and the 15 blade cuts into the insulation layer.

[0095] As the cam 5 continues to rotate counterclockwise, the eccentric groove interacts with the roller 7, driving the scraper 15 to move to the left to the left stop point via the connecting rod 8, the third rotating shaft 10, the first scraper seat 11, and the second scraper seat 12, thus completing one scraping process of the insulation layer. With the rotation of the dyeing and packaging wire and multiple reciprocating scraping processes, the insulation layer is gradually scraped off.

[0096] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A method for automatically scraping off the insulation layer of enameled wire, characterized in that... The specific steps are as follows: Pass the enameled wire (18) through the guide sleeve (17) and press it against the adjustable positioning block (28) to fix it axially; The driving power source makes the cam (5) rotate continuously; The rotation of the cam (5) synchronously controls the scraper mechanism to perform a compound motion cycle, which includes: Radial opening stage: The support mechanism is driven by the outer peripheral action surface of the cam (5) so that at least two scrapers (15) in the scraper mechanism overcome the tension of the elastic element and open radially, so that the scraper blades are separated from or away from the surface of the enameled wire. Axial feed stage: When the scraper (15) is radially open or remains open, the linkage mechanism is driven by the eccentric annular groove of the cam (5) to move the entire scraper mechanism along the enameled wire axis to the preset scraping starting point. Radial closing and scraping stage: As the cam (5) continues to rotate, the support mechanism releases the constraint on the scraper mechanism, and the scraper mechanism closes radially under the pulling force of the elastic element, so that the scraper blade presses against the enameled wire insulation layer; at the same time, the linkage mechanism, driven by the cam (5), drives the scraper mechanism to move in the opposite direction along the enameled wire axis, thereby scraping off the insulation layer at a set distance; Repeat the compound motion cycle, in conjunction with the periodic rotation of the enameled wire, until the insulation layer is completely scraped off.

2. The method for automatically scraping off the insulation layer of enameled wire according to claim 1, characterized in that: The clamping force of the scraper mechanism on the enameled wire during radial closure can be controlled by adjusting the preload of the elastic element to adapt to insulation layers of different thicknesses and materials.

3. An apparatus for automatically scraping off the insulation layer of enameled wire according to claim 1 or 2, characterized in that, include: The frame, including a base plate (1) and vertical plates (2) and guide plates (26) mounted thereon, serves as the supporting component for the entire device; The power mechanism is used to provide rotational power; The motion conversion mechanism includes a cam (5), which is rotatably connected to the vertical plate (2) via a first rotating shaft (3) and is driven to rotate by the power mechanism; The scraper mechanism includes a first scraper seat (11) and a second scraper seat (12) that can be opened and closed relative to each other, and a scraper (15) mounted thereon. The radial opening control mechanism includes a push rod assembly that cooperates with the outer peripheral working surface of the cam (5). The push rod assembly converts the rotational torque into thrust to drive the support mechanism to change the tilt angle, thereby controlling the opening and closing of the scraper mechanism. That is, the rotational motion of the cam is converted into the radial opening action of the first scraper seat (11) and the second scraper seat (12). The axial reciprocating drive mechanism includes a linkage mechanism that engages with the eccentric annular groove of the cam (5). The other end of the linkage mechanism is connected to the scraper mechanism to convert the rotational motion of the cam into the axial reciprocating linear motion of the scraper mechanism. A reset elastic element is connected between the first scraper seat (11) and the second scraper seat (12) to provide radially closing clamping force for the scraper; The wire positioning mechanism includes a guide sleeve (17) for guiding and supporting the enameled wire (18) and an adjustable positioning block (28).

4. The device for automatically scraping off the insulation layer of enameled wire according to claim 3, characterized in that: The cam (5) is a replaceable module. Different cam modules have different eccentric ring groove profiles and / or outer contour designs to correspond to different scraping stroke lengths. The eccentric ring groove is opened on the disk surface of the cam and serves as the motion track at one end of the linkage mechanism.

5. The device for automatically scraping off the insulation layer of enameled wire according to claim 4, characterized in that: The radial opening control mechanism includes a linked push rod assembly and a support mechanism; The push rod assembly includes a push rod (21) that can slide along the push rod sleeve (22). One end of the push rod (21) is rotatably connected to a second roller (19) via a fourth rotating shaft (20). The second roller (19) contacts and follows the outer contour of the cam (5), and its other end contacts the support mechanism. The push rod sleeve (22) is mounted on the upright plate (2). The support mechanism includes a support frame (23), one end of which contacts the other end of the top rod (21), and the middle part is rotatably connected to the upright plate (2) through the support frame seat (27); the support frame (23) is rotatably connected to the third rollers (24) on both sides of the support frame seat (27) through the fifth rotating shaft (25), and the two third rollers (24) are respectively in contact with the opposite surfaces of the first scraper seat (11) and the second scraper seat (12); The movement of the push rod assembly is controlled by the outer peripheral working surface of the cam (5), which in turn pushes the support mechanism to adjust the tilt angle. As the angle between the support mechanism and the first scraper seat (11) and the second scraper seat (12) approaches 90°, the scraper mechanism opens radially. As the angle between the support mechanism and the first scraper seat (11) and the second scraper seat (12) decreases from 90°, the scraper mechanism closes radially.

6. The device for automatically scraping off the insulation layer of enameled wire according to claim 5, characterized in that: The axial reciprocating drive mechanism includes a linkage mechanism, which includes a linkage (8) that can slide along the linkage support sleeve (9). One end of the linkage (8) is rotatably connected to a roller (7) via a second rotating shaft (6). The roller (7) is slidably installed in the eccentric annular groove of the cam (5). The other end is fixedly connected to or rotatably connected to a third rotating shaft (10). The linkage support sleeve (9) is installed on the vertical plate (2). The third rotating shaft (10) is slidably installed in a horizontal groove provided on the vertical plate (2), and can slide back and forth along the groove in a straight line; When the cam (5) rotates, it drives the roller (7) through the eccentric ring groove, and then drives the third rotating shaft (10) and the entire scraper mechanism to reciprocate axially along the slide groove through the connecting rod (8).

7. The device for automatically scraping off the insulation layer of enameled wire according to claim 6, characterized in that: The scraper mechanism includes a first scraper seat (11) and a second scraper seat (12) symmetrically mounted on the third rotating shaft (10). The first scraper seat (11) and the second scraper seat (12) are located on both sides of the connecting rod (8), with one end of each being rotatably connected to the third rotating shaft (10) and the other end being fitted with a scraper (15).

8. The apparatus for automatically scraping off the insulation layer of enameled wire according to claim 7, characterized in that: The reset elastic element is a spring (14), whose two ends are connected to the first scraper seat (11) and the second scraper seat (12) respectively by a hanging pin (13). The preload of the spring (14) is adjustable.

9. The apparatus for automatically scraping off the insulation layer of enameled wire according to claim 8, characterized in that: The adjustable positioning block (28) of the wire positioning mechanism is installed on the upright plate (2) and its position is adjustable. It is used to position the top of the head of the enameled wire (18).

10. The apparatus for automatically scraping off the insulation layer of enameled wire according to claim 9, characterized in that: The guide sleeve (17) is installed on the guide plate (26) which is perpendicular to the upright plate (2) and is positioned opposite the blade of the scraper (15). It is made of non-metallic material to prevent scratching the surface of the enameled wire. The guide sleeve (17) is provided with replaceable modules with different inner hole shapes and sizes, including circular holes and rectangular holes, to accommodate circular or flat enameled wires.

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