Rectangular enameled wire head stripping device

Abstract

A kind of wire head paint removal device of rectangular enameled wire hairpin, including paint scraping mechanism, the paint scraping mechanism includes respectively independent left face paint scraping mechanism, right face paint scraping mechanism, upper face paint scraping mechanism, bottom face paint scraping mechanism, each paint scraping mechanism includes copper wire positioning mechanism, tool path mechanism, tool position adjusting mechanism, and each paint scraping mechanism is equipped with the same height wire passage, copper wire positioning mechanism is installed on first mounting seat, copper wire positioning mechanism is driven displacement by drive cylinder and is positioned to flat copper wire, tool position adjusting mechanism is slidably connected with first mounting seat by moving seat, moving seat is driven displacement by servo motor and makes paint scraping knife contact or leave flat copper wire, tool path mechanism is slidably connected with moving seat and is vertically positioned, tool path mechanism is driven displacement by electric cylinder and makes paint scraping knife move axially along flat copper wire and removes paint, the paint scraping mechanism is used to be arranged in four stations of the conveying device of flat copper wire hairpin respectively, for removing paint to four sides of flat copper wire hairpin in turn.

Description

Technical Field

[0001] This invention relates to the field of motor manufacturing technology, and in particular to a device for removing the enamel coating from the end of a rectangular enameled wire hairpin. Background Technology

[0002] The stator is a crucial component of an electric motor. For the same volume, many stators use hairpin windings made of flat copper wire (i.e., rectangular enameled wire) instead of round wire windings. Because the cross-section of flat copper wire is rectangular, this type of winding increases both stator power and core slot fill factor. Typically, rectangular enameled wire hairpins are inserted into the core slots, and the exposed copper wire ends are welded together to form a complete coil winding. When welding two adjacent copper wire ends, the enamel coating on each rectangular enameled wire end must be thoroughly removed. Otherwise, poor welding or even failure to weld the two ends will occur, reducing conductivity. Therefore, ensuring thorough removal of the enamel coating from the welding ends of the rectangular enameled wire is critical for the stator winding.

[0003] Currently, common mechanical scraping devices for removing enamel coating are mainly designed for cylindrical enameled wires. These devices cannot be used for removing enamel coating from flat copper enameled wires. There are also devices for removing enamel coating from flat copper enameled wires. These devices typically use two symmetrically positioned scrapers to simultaneously scrape away the enamel coating from both sides of the flat copper enameled wire, and then rotate it 90 degrees to scrape away the enamel coating from the other two sides. However, this method requires very high precision in the positioning of the two scraper blades. If the positional precision of the two scraper blades is inconsistent, the flat copper enameled wire is prone to bending due to uneven force during scraping, resulting in incomplete removal of the enamel coating. This affects the soldering of hairpin wire ends and severely impacts conductivity. How to avoid these problems when removing enamel coating from flat copper enameled wire ends has become a key research focus. Summary of the Invention

[0004] The purpose of this invention is to address the problems existing in the prior art by proposing a wire end removal device for rectangular enameled wire hairpins. This device employs four scraping mechanisms—a left-side scraping mechanism, a right-side scraping mechanism, a top-side scraping mechanism, and a bottom-side scraping mechanism—to individually scrape the left, right, top, and bottom surfaces of a flat copper wire. Each of the four scraping mechanisms includes a copper wire positioning mechanism, a blade position adjustment mechanism, and a blade feeding mechanism. These mechanisms all have independent drive devices, improving the accuracy of the scraping process.

[0005] The objective of this invention is achieved as follows:

[0006] A device for removing enamel coating from the ends of a rectangular enameled wire hair clip includes a scraping mechanism comprising four independent scraping mechanisms: a left scraping mechanism, a right scraping mechanism, a top scraping mechanism, and a bottom scraping mechanism. Each scraping mechanism includes a copper wire positioning mechanism, a cutting mechanism, and a cutting tool adjustment mechanism. Each scraping mechanism also has a passageway for flat copper wires of the same height. The copper wire positioning mechanism is mounted on a first mounting base and is driven by a cylinder to position the flat copper wire. The cutting tool adjustment mechanism is slidably engaged with the first mounting base via a movable base, which is driven by a servo motor to move the scraping blade to or away from the flat copper wire. The cutting mechanism is horizontally slidably engaged with the movable base and vertically positioned. The cutting mechanism is driven by an electric cylinder to move the scraping blade along the axial direction of the flat copper wire to remove the enamel coating. The left, right, top, and bottom scraping mechanisms are respectively positioned at four stations on the flat copper wire hair clip conveying device to sequentially remove the enamel coating from the four sides of the hair clip.

[0007] The copper wire positioning mechanism of the left-side paint scraping mechanism includes a copper wire length positioning block and a copper wire clamping block. The copper wire length positioning block is driven by an adjusting cylinder mounted on the first mounting base, and the copper wire clamping block is driven by a driving cylinder mounted on the first mounting base. The moving seat of the tool position adjustment mechanism is slidably engaged with the first mounting base via a horizontally extending guide rail. A servo motor is mounted at the lower end of the first mounting base, and a cam on the servo motor shaft engages with a slotted hole on the moving seat. The tool feeding mechanism includes a tool holder, a paint scraper, and a connecting mechanism. The paint scraper is mounted on the tool holder, with the scraper facing the left side of the flat copper wire. The tool holder is slidably engaged with the moving seat via an axially extending third guide rail. The tool holder is connected to an electric cylinder mounted on the second mounting base via the connecting mechanism. The connecting mechanism includes an axially moving seat and a horizontally moving seat. The axially moving seat is slidably engaged with the second mounting base via a second guide rail and is connected to the electric cylinder shaft. The horizontally moving seat is slidably engaged with the axially moving seat via a first guide rail and is connected to the tool holder.

[0008] The lower end of the copper wire clamping block is provided with a limiting groove for fixing the flat copper wire. The width of the limiting groove is smaller than the width of the flat copper wire, so that the left side of the flat copper wire is exposed outside the limiting groove.

[0009] The right-side paint scraping mechanism has the same structure as the left-side paint scraping mechanism and is set in a mirror image, so that the paint scraper faces the right side of the copper wire.

[0010] The copper wire positioning mechanism of the above-mentioned scraping mechanism includes a copper wire length positioning block, which is driven by an adjusting cylinder mounted on a first mounting base. The copper wire length positioning block is connected to the adjusting cylinder through a planar mechanism. A copper wire stop block for abutting the end of the flat copper wire is provided at the upper end of the copper wire length positioning block. The moving seat of the tool position adjustment mechanism is slidably engaged with the first mounting base through a longitudinally extending vertical guide rail. The first mounting base is an L-shaped mounting base composed of a vertical plate and a horizontal plate. A servo motor is mounted on the upper end of the vertical plate of the first mounting base. A cam on the motor shaft engages with a slotted hole on the movable seat. The cutting mechanism includes a tool holder, a scraper, and a connecting mechanism. The scraper is mounted on the tool holder with its face facing the flat copper wire. The tool holder slides with the movable seat via an axially extending third guide rail. The tool holder is connected to an electric cylinder mounted on a second mounting base via the connecting mechanism. The connecting mechanism includes an axially moving seat and a vertically moving seat. The axially moving seat slides with the second mounting base via a fourth guide rail, and the vertically moving seat slides with the axially moving seat via a fifth guide rail and is connected to the tool holder.

[0011] The copper wire positioning mechanism of the bottom surface scraping mechanism includes a copper wire length positioning block, which is driven by a drive cylinder and an adjustment cylinder mounted on a first mounting base. A copper wire stop block is provided at the lower end of the copper wire length positioning block to abut against the end of the flat copper wire. The moving seat of the tool position adjustment mechanism is slidably engaged with the first mounting base via a longitudinally extending vertical guide rail. The first mounting base is an L-shaped mounting base composed of a vertical plate and a horizontal plate. A servo motor is mounted at the lower end of the vertical plate of the first mounting base. A cam is provided on the shaft of the servo motor to engage with a slotted hole on the moving seat. The tool feeding mechanism includes a tool holder, a scraping blade, and a connecting mechanism. The scraping blade is mounted on the tool holder, with the scraping blade facing down from the flat copper wire. The tool holder is slidably engaged with the moving seat via an axially extending third guide rail. The tool holder is connected to an electric cylinder mounted on a second mounting base via the connecting mechanism. The connecting mechanism includes an axially moving seat and a vertically moving seat. The axially moving seat is connected to the electric cylinder shaft, and the vertically moving seat is slidably engaged with the axially moving seat via a sixth guide rail and is also connected to the tool holder.

[0012] The flat copper wire hairpin conveying device includes a timing pulley, a timing belt, and copper wire clamping blocks. A timing belt is sleeved on the outer periphery of the two timing pulleys, and copper wire clamping blocks are provided on the outer surface of the timing belt. Two sets of flat copper wire hairpin conveying devices are arranged in parallel, and the flat copper wire is fixed in the grooves of the copper wire clamping blocks at symmetrical positions.

[0013] Using the above solution, a wire end removal device for rectangular enameled wire hairpins includes an enameling scraping mechanism. This scraping mechanism comprises independent left-side scraping, right-side scraping, top-side scraping, and bottom-side scraping mechanisms, capable of scraping the left, right, top, and bottom surfaces of the flat copper wire individually. Each scraping mechanism includes a copper wire positioning mechanism, a cutting tool mechanism, and a tool position adjustment mechanism. Furthermore, each scraping mechanism has a flat copper wire passage of equal height, allowing the processed flat copper wire to smoothly exit and enter the next workstation. The copper wire positioning mechanism is mounted on a first mounting base. The mechanism uses a drive cylinder to position the flat copper wire. The tool position adjustment mechanism slides with the first mounting base via a movable seat. The movable seat is driven by a servo motor to move, causing the scraper blade to contact or move away from the flat copper wire. The tool feeding mechanism slides horizontally with the movable seat and is vertically positioned. The tool feeding mechanism is driven by an electric cylinder to move the scraper blade along the axial direction of the flat copper wire to remove the enamel coating. The left, right, top, and bottom scraping mechanisms are respectively set at four stations of the flat copper wire feeding device to remove the enamel coating from the four sides of the flat copper wire feeding device. After the flat copper wire to be processed is fixed by the copper wire positioning mechanism, the tool position adjustment mechanism drives the tool feeding mechanism to approach the flat copper wire and scrape off the enamel coating. After processing is completed, each mechanism resets, and the flat copper wire exits from the wire passage and enters the next scraping mechanism.

[0014] The present invention relates to a device for removing enamel coating from the end of a rectangular enameled wire hairpin, comprising a scraping mechanism. The scraping mechanism includes separate left-side scraping, right-side scraping, top-side scraping, and bottom-side scraping mechanisms, capable of scraping the coating from the left, right, top, and bottom sides of the flat copper wire individually. Each scraping mechanism includes a copper wire positioning mechanism, a cutting mechanism, and a cutting tool adjustment mechanism. The copper wire positioning mechanism, cutting mechanism, and cutting tool adjustment mechanism are all equipped with driving devices, enabling the positioning and support of the flat copper wire, ensuring uniform force on the copper wire, and also allowing for adjustments to the scraping depth and length, thus ensuring scraping accuracy.

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the paint scraping mechanism on the left.

[0017] Figure 2 This is a three-dimensional schematic diagram of the copper wire positioning mechanism in the paint scraping mechanism on the left.

[0018] Figure 3 This is a three-dimensional schematic diagram of the cutting mechanism in the paint scraping mechanism on the left.

[0019] Figure 4 This is a three-dimensional schematic diagram of the blade position adjustment mechanism in the paint scraping mechanism on the left.

[0020] Figure 5 This is a schematic diagram of the paint scraper, copper wire clamping block, and copper wire length positioning block in the paint scraping mechanism on the left.

[0021] Figure 6 This is a three-dimensional schematic diagram of the paint scraping mechanism above.

[0022] Figure 7 This is a three-dimensional schematic diagram of the copper wire positioning mechanism in the above paint scraping mechanism.

[0023] Figure 8 This is a three-dimensional schematic diagram of the cutting mechanism in the paint scraping mechanism above.

[0024] Figure 9 This is a three-dimensional schematic diagram of the blade position adjustment mechanism in the paint scraping mechanism above.

[0025] Figure 10 for Figure 7 Enlarged view of point A in the middle.

[0026] Figure 11 This is a three-dimensional schematic diagram of the bottom paint scraping mechanism.

[0027] Figure 12 This is a three-dimensional schematic diagram of the copper wire positioning mechanism in the bottom surface scraping mechanism.

[0028] Figure 13 This is a three-dimensional schematic diagram of the cutting mechanism in the bottom paint scraping mechanism.

[0029] Figure 14 This is a three-dimensional schematic diagram of the blade position adjustment mechanism in the bottom surface paint scraping mechanism.

[0030] Figure 15 for Figure 12 Enlarged view of point B in the middle.

[0031] Figure 16 This is a three-dimensional schematic diagram of the conveying device for a flat copper wire hairpin.

[0032] Explanation of reference numerals in the attached drawings: 1. Wire passage; 2. First mounting base; 3. Drive cylinder; 4. Moving base; 5. Servo motor; 6. Paint scraper; 7. Second mounting base; 8. Flat copper wire; 9. Copper wire clamping block; 10. Copper wire length positioning block; 11. Vertical guide rail; 12. Adjusting cylinder; 13. Connecting mechanism; 14. Electric cylinder; 15. Tool holder; 16. First guide rail; 17. Second guide rail; 18. Horizontal moving base; 19. Limiting groove; 20. Planar mechanism; 21. Third guide rail; 22. Fourth guide rail; 23. Fifth guide rail; 24. Sixth guide rail; 25. Copper wire stop block; 26. Horizontal guide rail; 27. Axial moving base; 28. Vertical moving base; 29. ​​Synchronous pulley; 30. Synchronous belt; 31. Copper wire clamping block; 32. Groove; 33. Cam; 34. Strip hole. Detailed Implementation

[0033] See Figures 1 to 16 A device for removing enamel from the end of a rectangular enameled wire hairpin includes a scraping mechanism. The scraping mechanism comprises four independent scraping mechanisms: a left scraping mechanism, a right scraping mechanism, a top scraping mechanism, and a bottom scraping mechanism. These mechanisms can scrape the left, right, top, and bottom surfaces of the flat copper wire 8 separately, improving the accuracy of the scraping. Each scraping mechanism includes a copper wire positioning mechanism, a cutting mechanism, and a cutting tool adjustment mechanism. Furthermore, each scraping mechanism is equipped with a wire passage 1 of the same height for the flat copper wire 8, allowing the processed flat copper wire 8 to smoothly exit and enter the next workstation. The copper wire positioning mechanism is mounted on the first mounting base 2, which is an L-shaped mounting base composed of a vertical plate and a horizontal plate. The copper wire positioning mechanism is driven by a drive cylinder 3 to position the flat copper wire 8. The blade adjustment mechanism is slidably engaged with the first mounting base 2 via a movable base 4. The movable base 4 is driven by a servo motor 5 to move so that the paint scraper 6 contacts or leaves the flat copper wire 8. The blade feeding mechanism is slidably engaged with the movable base 4 for horizontal movement and vertical positioning. The blade feeding mechanism is driven by an electric cylinder 14 to move the paint scraper 6 along the axial direction of the flat copper wire 8 to remove the paint. The left-side paint scraping mechanism, right-side paint scraping mechanism, top paint scraping mechanism, and bottom paint scraping mechanism are respectively set at the four workstations of the flat copper wire feeding conveyor device for feeding the flat copper wire. The paint is removed from the four sides of the card in sequence. The conveying device for the flat copper wire card includes a timing pulley 29, a timing belt 30, and a copper wire clamping block 31. A timing belt 30 is sleeved on the outer periphery of the two timing pulleys 29. The copper wire clamping block 31 is provided on the outer surface of the timing belt 30. Two sets of the conveying device for the flat copper wire card are arranged in parallel. The flat copper wire 8 is fixed in the groove 32 of the copper wire clamping block 31 at symmetrical positions. In this embodiment, the four paint scraping mechanisms are arranged in any order at the four paint scraping stations. The order can be left paint scraping mechanism, right paint scraping mechanism, top paint scraping mechanism, bottom paint scraping mechanism, or top paint scraping mechanism, bottom paint scraping mechanism, left paint scraping mechanism, right paint scraping mechanism, etc.

[0034] The copper wire positioning mechanism of the left-side scraping mechanism includes a copper wire length positioning block 10 and a copper wire clamping block 9. The copper wire length positioning block 10 is driven by an adjusting cylinder 12 mounted on the first mounting base 2 to adjust the scraping length. The copper wire length positioning block 10 can also support the lower end of the flat copper wire 8. The copper wire clamping block 9 is driven by a driving cylinder 3 mounted on the first mounting base 2 to clamp or loosen the flat copper wire 8 and support the right end of the flat copper wire 8, so that the flat copper wire 8 is subjected to uniform force. The moving seat 4 of the blade position adjustment mechanism slides with the horizontal plate of the first mounting base 2 through a horizontally extending horizontal guide rail 26. A servo motor 5 is mounted on the lower end of the horizontal plate of the first mounting base 2. A cam 33 is provided on the shaft of the servo motor 5 to cooperate with the strip hole 34 provided on the moving seat 4. Servo motor 5 drives cam 33 to rotate in slot 34, causing movable seat 4 to move in a direction away from or towards flat copper wire 8; the tool feeding mechanism includes tool holder 15, paint scraper 6, and connecting mechanism 13. The paint scraper 6 is mounted on tool holder 15, facing the left side of flat copper wire 8. Tool holder 15 is slidably engaged with movable seat 4 through axially extending third guide rail 21. Tool holder 15 is connected to electric cylinder 14 mounted on second mounting base 7 through connecting mechanism 13. Connecting mechanism 13 includes axial movable seat 27 and horizontal movable seat 18. Axial movable seat 27 is slidably engaged with second mounting base 7 through second guide rail 17 and is axially connected to electric cylinder 14. Horizontal movable seat 18 is slidably engaged with axial movable seat 27 through first guide rail 16 and is connected to tool holder 15. In this embodiment, the flat copper wire carding conveying device conveys the flat copper wire 8 to the copper wire length positioning block 10 of the left-side paint scraping mechanism. The adjusting cylinder 12 drives the copper wire length positioning block 10 to adjust the paint scraping length. After adjustment, the driving cylinder 3 drives the copper wire pressing block 9 to move downward to press the flat copper wire 8. The electric cylinder 14 drives the knife holder 15 to move to the paint scraping starting position. The servo motor 5 drives the cam 33 to rotate in the strip hole 34, driving the knife holder 15 to approach the flat copper wire 8. When the paint scraping knife 6 reaches the paint scraping depth of the flat copper wire 8, the electric cylinder 14 drives the knife holder 15 to pull back and scrape off the paint. After the paint scraping is completed, all mechanisms reset, and the flat copper wire 8 exits from the wire passage 1 and enters the next paint scraping station. The lower end of the copper wire clamping block 9 is provided with a limiting groove 19 for fixing the flat copper wire 8. The width of the limiting groove 19 is smaller than the width of the flat copper wire 8, so that the left side of the flat copper wire 8 is exposed in the limiting groove 19, so that the paint scraper 6 maintains a certain distance from the copper wire clamping block 9 and the copper wire length positioning block 10, and the paint is scraped smoothly.

[0035] The right-side scraping mechanism has the same structure as the left-side scraping mechanism and is mirror-image arranged so that the scraping blade 6 faces the right side of the copper wire. The copper wire positioning mechanism of the right-side scraping mechanism includes a copper wire length positioning block 10 and a copper wire clamping block 9. The copper wire length positioning block 10 is driven by an adjusting cylinder 12 mounted on the first mounting base 2 and is used to adjust the scraping length. The copper wire length positioning block 10 can also support the lower end of the flat copper wire 8. The copper wire clamping block 9 is driven by a driving cylinder 3 mounted on the first mounting base 2 and is used to clamp or loosen the flat copper wire 8 and support the left end of the flat copper wire 8 so that the flat copper wire 8 is evenly stressed. The moving seat 4 of the blade position adjustment mechanism slides with the first mounting base 2 through a horizontally extending guide rail 26. A servo motor 5 is mounted on the lower end of the horizontal plate of the first mounting base 2. A cam 33 is provided on the shaft of the servo motor 5 and cooperates with the strip hole 34 provided on the moving seat 4. The servo motor 5 drives the cam 33 to rotate in the strip hole 34, causing the moving seat 4 to move in a direction away from or towards the flat copper wire 8; the cutting mechanism includes a tool holder 15, a paint scraper 6, and a connecting mechanism 13. The paint scraper 6 is mounted on the tool holder 15, facing the right side of the flat copper wire 8. The tool holder 15 is slidably engaged with the moving seat 4 through an axially extending third guide rail 21. The tool holder 15 is connected to the electric cylinder 14 mounted on the second mounting base 7 through the connecting mechanism 13. The connecting mechanism 13 includes an axial moving seat 27 and a horizontal moving seat 18. The axial moving seat 27 is slidably engaged with the second mounting base 7 through the second guide rail 17 and is axially connected to the electric cylinder 14. The horizontal moving seat 18 is slidably engaged with the axial moving seat 27 through the first guide rail 16 and is connected to the tool holder 15. In this embodiment, the flat copper wire carding conveying device conveys the flat copper wire 8 to the copper wire length positioning block 10 of the right-side paint scraping mechanism. The adjusting cylinder 12 drives the copper wire length positioning block 10 to adjust the paint scraping length. After adjustment, the driving cylinder 3 drives the copper wire pressing block 9 to move downward to press the flat copper wire 8. The electric cylinder 14 drives the knife holder 15 to move to the paint scraping starting position. The servo motor 5 drives the cam 33 to rotate in the strip hole 34, driving the knife holder 15 to approach the flat copper wire 8. When the paint scraping knife 6 reaches the paint scraping depth of the flat copper wire 8, the electric cylinder 14 drives the knife holder 15 to pull back and scrape off the paint. After the paint scraping is completed, all mechanisms reset, and the flat copper wire 8 exits from the wire passage 1 and enters the next paint scraping station.

[0036] The copper wire positioning mechanism of the above-mentioned scraping mechanism includes a copper wire length positioning block 10. The copper wire length positioning block 10 is driven by an adjusting cylinder 12 mounted on the first mounting base 2. The copper wire length positioning block 10 is connected to the adjusting cylinder 12 through a planar mechanism 20. When the adjusting cylinder 12 moves axially upward, the scraping length increases; when the adjusting cylinder 12 moves axially downward, the scraping length decreases. A copper wire stop block 25 is provided at the upper end of the copper wire length positioning block 10 to abut against the end of the flat copper wire 8. The stop block 25 is used to support the flat copper wire 8. The moving seat 4 of the tool position adjustment mechanism is slidably engaged with the upright plate of the first mounting base 2 through a longitudinally extending vertical guide rail 11. The first mounting base 2 is an L-shaped mounting base composed of an upright plate and a horizontal plate. A servo motor 5 is mounted on the upper end of the upright plate of the first mounting base 2. A cam 33 is mounted on the machine shaft 5 and engages with a strip hole 34 on the movable seat 4. The servo motor 5 drives the cam 33 to rotate in the strip hole 34, causing the movable seat 4 to move up and down, away from or closer to the flat copper wire 8. The tool feeding mechanism includes a tool holder 15, a paint scraper 6, and a connecting mechanism 13. The paint scraper 6 is mounted on the tool holder 15, facing the flat copper wire 8. The tool holder 15 is slidably engaged with the movable seat 4 via an axially extending third guide rail 21. The tool holder 15 is connected to an electric cylinder 14 mounted on a second mounting seat 7 via the connecting mechanism 13. The connecting mechanism 13 includes an axially moving seat 27 and a vertically moving seat 28. The axially moving seat 27 is slidably engaged with the second mounting seat 7 via a fourth guide rail 22. The vertically moving seat 28 is slidably engaged with the axially moving seat 27 via a fifth guide rail 23 and is connected to the tool holder 15. In this embodiment, the flat copper wire carding conveying device conveys the flat copper wire 8 to the upper end of the copper wire length positioning block 10 of the upper coating scraping mechanism. The adjusting cylinder 12 drives the copper wire length positioning block 10 to adjust the coating scraping length. After the adjustment is completed, the electric cylinder 14 drives the knife holder 15 to move to the coating scraping starting position. The servo motor 5 drives the cam 33 to rotate in the strip hole 34, driving the knife holder 15 to move downward and approach the flat copper wire 8. When the coating scraping knife 6 reaches the coating scraping depth of the flat copper wire 8, the electric cylinder 14 drives the knife holder 15 to pull back and scrape off the coating. After the coating scraping is completed, all mechanisms are reset, and the flat copper wire 8 exits from the wire passage 1 and enters the next coating scraping station.

[0037] The copper wire positioning mechanism of the bottom surface scraping mechanism includes a copper wire length positioning block 10. The copper wire length positioning block 10 is driven by a drive cylinder 3 and an adjustment cylinder 12 mounted on the first mounting base 2. The adjustment cylinder 12 drives the copper wire length positioning block 10 to move axially along the flat copper wire 8 to adjust the scraping length. The drive cylinder 3 drives the copper wire length positioning block 10 to move up and down to adjust the height. A copper wire stop block 25 is provided at the lower end of the copper wire length positioning block 10 to abut against the end of the flat copper wire 8. The stop block 25 is used to support the flat copper wire 8. The moving seat 4 of the tool position adjustment mechanism is slidably engaged with the upright plate of the first mounting base 2 through a longitudinally extending vertical guide rail 11. The first mounting base 2 is an L-shaped mounting base composed of an upright plate and a horizontal plate. A servo motor 5 is installed at the lower end of the upright plate of the first mounting base 2. The servo motor 5 has a cam 33 on its shaft that engages with the strip hole 34 on the movable seat 4. The servo motor 5 drives the cam 33 to rotate in the strip hole 34, causing the movable seat 4 to move up and down, away from or closer to the flat copper wire 8. The cutting mechanism includes a tool holder 15, a paint scraper 6, and a connecting mechanism 13. The paint scraper 6 is mounted on the tool holder 15, with the paint scraper 6 facing the underside of the flat copper wire 8. The tool holder 15 is slidably engaged with the movable seat 4 via an axially extending third guide rail 21. The tool holder 15 is connected to the electric cylinder 14 mounted on the second mounting base 7 via the connecting mechanism 13. The connecting mechanism 13 includes an axially moving seat 27 and a vertically moving seat 28. The axially moving seat 27 is axially connected to the electric cylinder 14, and the vertically moving seat 28 is slidably engaged with the axially moving seat 27 via a sixth guide rail 24 and is also connected to the tool holder 15. In this embodiment, the flat copper wire hairpin conveying device conveys the flat copper wire 8 to the lower end of the copper wire length positioning block 10 of the bottom coating mechanism. The adjusting cylinder 12 drives the copper wire length positioning block 10 to adjust the coating length. After adjustment, the driving cylinder 3 drives the copper wire length positioning block 10 to move downward to fit the flat copper wire 8, so that the flat copper wire 8 is evenly stressed. The electric cylinder 14 drives the knife holder 15 to move to the coating starting position. The servo motor 5 drives the cam 33 to rotate in the strip hole 34, driving the knife holder 15 to move upward to approach the flat copper wire 8. When the coating knife 6 reaches the coating depth of the flat copper wire 8, the electric cylinder 14 drives the knife holder 15 to pull back and scrape off the coating. After the coating is completed, all mechanisms are reset, the flat copper wire 8 exits from the wire passage 1, and the coating on all four sides of the flat copper wire 8 is completely removed.

Claims

1. A device for removing enamel from the end of a rectangular enameled wire hair clip, comprising an enamel scraping mechanism, characterized in that: The coating scraping mechanism includes separate left-side, right-side, top-side, and bottom-side coating scraping mechanisms. Each coating scraping mechanism includes a copper wire positioning mechanism, a cutting mechanism, and a cutting tool adjustment mechanism. Each coating scraping mechanism is provided with a wire passage (1) for flat copper wires (8) of the same height. The copper wire positioning mechanism is mounted on the first mounting base (2). The copper wire positioning mechanism is driven by a driving cylinder (3) to position the flat copper wires (8). The cutting tool adjustment mechanism is slidably engaged with the first mounting base (2) through a movable seat (4). The moving seat (4) is driven by the servo motor (5) to move so that the paint scraper (6) contacts or leaves the flat copper wire (8). The cutting mechanism slides horizontally with the moving seat (4) and is vertically positioned. The cutting mechanism is driven by the electric cylinder (14) to move so that the paint scraper (6) moves along the axial direction of the flat copper wire (8) to remove the paint. The left-side paint scraping mechanism, right-side paint scraping mechanism, top paint scraping mechanism and bottom paint scraping mechanism are respectively set in the four work positions of the flat copper wire hair clip conveying device to remove the paint from the four sides of the flat copper wire hair clip in sequence. The copper wire positioning mechanism of the left-side paint scraping mechanism includes a copper wire length positioning block (10) and a copper wire clamping block (9). The copper wire length positioning block (10) is driven by an adjusting cylinder (12) mounted on the first mounting base (2), and the copper wire clamping block (9) is driven by a driving cylinder (3) mounted on the first mounting base (2). The moving seat (4) of the blade position adjustment mechanism is slidably engaged with the first mounting base (2) through a horizontally extending guide rail (26). A servo motor (5) is mounted on the lower end of the first mounting base (2). A cam (33) is provided on the shaft of the servo motor (5) and engages with the strip hole (34) provided on the moving seat (4). The cutting mechanism includes a blade holder (15), a paint scraper (6), and a connecting... Mechanism (13), the paint scraper (6) is mounted on the knife holder (15), the paint scraper (6) faces the left side of the flat copper wire (8), the knife holder (15) is slidably engaged with the moving seat (4) through the axially extending third guide rail (21), the knife holder (15) is connected to the electric cylinder (14) mounted on the second mounting seat (7) through the connecting mechanism (13), the connecting mechanism (13) includes an axial moving seat (27) and a horizontal moving seat (18), the axial moving seat (27) is slidably engaged with the second mounting seat (7) through the second guide rail (17) and is axially connected to the electric cylinder (14), the horizontal moving seat (18) is slidably engaged with the axial moving seat (27) through the first guide rail (16) and is connected to the knife holder (15).

2. The device for removing enamel from the end of a rectangular enameled wire hair clip according to claim 1, characterized in that: The lower end of the copper wire clamping block (9) is provided with a limiting groove (19) for fixing the flat copper wire (8). The width of the limiting groove (19) is smaller than the width of the flat copper wire (8), so that the left side of the flat copper wire (8) is exposed in the limiting groove (19).

3. The device for removing enamel from the end of a rectangular enameled wire hair clip according to claim 1, characterized in that: The right-side paint scraping mechanism has the same structure as the left-side paint scraping mechanism and is set in a mirror image, so that the paint scraper (6) faces the right side of the copper wire.

4. The device for removing enamel from the end of a rectangular enameled wire hair clip according to claim 1, characterized in that: The copper wire positioning mechanism of the above-mentioned scraping mechanism includes a copper wire length positioning block (10), which is driven by an adjusting cylinder (12) installed on the first mounting base (2). The copper wire length positioning block (10) is connected to the adjusting cylinder (12) through a planar mechanism (20). A copper wire stop (25) is provided at the upper end of the copper wire length positioning block (10) for abutting against the end of the flat copper wire (8). The movable seat (4) of the tool position adjustment mechanism is slidably engaged with the first mounting seat (2) through a longitudinally extending vertical guide rail (11). The first mounting seat (2) is an L-shaped mounting seat composed of a vertical plate and a horizontal plate. A servo motor (5) is mounted on the upper end of the vertical plate of the first mounting seat (2). A cam (33) is provided on the shaft of the servo motor (5) and engages with the strip hole (34) provided on the movable seat (4). The tool feeding mechanism includes a tool holder (15), a paint scraper (6), and a connecting mechanism (13). The paint scraper (6) is mounted on the tool holder (15), and the surface of the paint scraper (6) is... On the flat copper wire (8), the tool holder (15) is slidably engaged with the moving seat (4) through the axially extending third guide rail (21). The tool holder (15) is connected to the electric cylinder (14) mounted on the second mounting seat (7) through the connecting mechanism (13). The connecting mechanism (13) includes an axial moving seat (27) and a vertical moving seat (28). The axial moving seat (27) is slidably engaged with the second mounting seat (7) through the fourth guide rail (22). The vertical moving seat (28) is slidably engaged with the axial moving seat (27) through the fifth guide rail (23) and is connected to the tool holder (15).

5. The device for removing enamel from the end of a rectangular enameled wire hair clip according to claim 1, characterized in that: The copper wire positioning mechanism of the bottom surface scraping mechanism includes a copper wire length positioning block (10), which is driven by a drive cylinder (3) and an adjustment cylinder (12) mounted on the first mounting base (2). The lower end of the copper wire length positioning block (10) is provided with a copper wire stop block (25) for abutting against the end of the flat copper wire (8). The moving seat (4) of the tool position adjustment mechanism is slidably engaged with the first mounting base (2) through a longitudinally extending vertical guide rail (11). The first mounting base (2) is an L-shaped mounting base composed of a vertical plate and a horizontal plate. A servo motor (5) is mounted on the lower end of the vertical plate of the first mounting base (2). A cam (33) is provided on the shaft of the servo motor (5) and a strip hole (33) is provided on the moving seat (4). 34) Coordination; The cutting mechanism includes a tool holder (15), a paint scraper (6), and a connecting mechanism (13). The paint scraper (6) is mounted on the tool holder (15) with the paint scraper (6) facing the flat copper wire (8) below. The tool holder (15) is slidably engaged with the moving seat (4) through an axially extending third guide rail (21). The tool holder (15) is connected to the electric cylinder (14) mounted on the second mounting seat (7) through the connecting mechanism (13). The connecting mechanism (13) includes an axial moving seat (27) and a vertical moving seat (28). The axial moving seat (27) is axially connected to the electric cylinder (14). The vertical moving seat (28) is slidably engaged with the axial moving seat (27) through a sixth guide rail (24) and is connected to the tool holder (15).

6. The device for removing enamel from the end of a rectangular enameled wire hair clip according to claim 1, characterized in that: The flat copper wire hairpin conveying device includes a timing pulley (29), a timing belt (30), and a copper wire clamping block (31). A timing belt (30) is sleeved on the outer periphery of the two timing pulleys (29). A copper wire clamping block (31) is provided on the outer surface of the timing belt (30). Two sets of the flat copper wire hairpin conveying devices are arranged in parallel. The flat copper wire (8) is fixed in the groove (32) of the copper wire clamping block (31) at a symmetrical position.

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