A copper wire paint removal device

Abstract

This invention discloses a copper wire coating removal device, belonging to the technical field of coating removal devices for enameled copper wire. The aim is to improve coating removal efficiency and shorten production cycle time while cleanly removing the coating. The proposed technical solution includes a frame and power source, an eccentric wheel linkage mechanism, and a punching die. The eccentric wheel linkage mechanism is connected to the punching die via a slider, and the punching die's tool floating plate is fixed to the slider. A tool fixing plate is fixed to the frame. A moving tool is fixed to the tool floating plate, and a fixed tool is fixed to the tool fixing plate. The moving and fixed tools form a first shearing pair and a second shearing pair. A stripper plate is provided between the moving and fixed tools, and the stripper plate is elastically connected to the tool floating plate. The tool fixing plate is provided with a copper wire limiting block and a guide block, and the guide block is provided with a guide groove. The opening direction of the guide groove is parallel to the reciprocating motion direction of the moving tool. This invention can process both sides of a flat copper wire at once, further shortening the production cycle time and improving production efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of copper wire stripping devices, specifically to a copper wire stripping device. Background Technology

[0002] In the production process of flat-wire new energy motor stators, flat enameled copper wires need to be shaped into unique hairpin shapes. These hairpin wires are then inserted into the stator core, and the leads between the hairpin wires are welded to form a circuit. Only when electricity is applied can a magnetic field be generated. The flat copper wires are often covered with an insulating enamel coating. To ensure welding quality, the enamel coating on the copper wire leads needs to be removed.

[0003] There are generally two types of traditional devices for removing the enamel coating from flat copper wires. One type uses a scraper to remove the enamel coating. This method often does not remove the enamel coating from the copper wire completely, and it can also cause vibration marks on the surface of the copper wire, making soldering difficult.

[0004] Another method involves milling the surface of the flat copper wire with a milling cutter. For example, patent CN223729323U provides a paint removal device, including: a machine base, and a drive device, a feed device, and two opposing milling cutters disposed on the machine base; the two milling cutters are spaced apart along a first direction, forming a channel between them to accommodate the flat copper wire; each milling cutter is used to mill the paint from two rounded corner edges on the corresponding side of the flat copper wire; the first direction is perpendicular to the length direction of the flat copper wire. The drive device is used to drive the two milling cutters to rotate, and the feed device is used to drive the two milling cutters to feed during milling.

[0005] This method uses a rotary milling cutter to continuously cut the paint layer. The cutter needs to feed along the length of the flat copper wire to cover the entire area to be removed. Since milling is a continuous removal process, the longer the paint layer to be removed, the longer the stroke of the cutter needs to travel, and the corresponding feed time increases. For example, when removing 10mm of paint, the cutter needs to move 10mm along the copper wire direction; if the removal length increases to 20mm, the cutter's stroke doubles, and the feed time is extended accordingly. Therefore, although this method removes paint relatively cleanly and improves the copper retention rate, the length of paint removal is positively correlated with the processing cycle time. In applications requiring a longer paint removal section, the production cycle time will be significantly lengthened, making it difficult to meet the needs of efficient production. Summary of the Invention

[0006] This invention provides a copper wire coating removal device, which aims to improve coating removal efficiency and shorten production cycle while cleanly removing the coating.

[0007] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0008] A copper wire coating removal device includes a frame, on which a power source, an eccentric wheel linkage mechanism, and a punching die are respectively arranged; the input end of the eccentric wheel linkage mechanism is connected to the power source, and a slider is provided between the output end of the eccentric wheel linkage mechanism and the input end of the punching die; the eccentric wheel linkage mechanism drives the punching die to perform reciprocating motion.

[0009] The punching die includes a tool floating plate and a tool fixing plate arranged opposite to each other. The output end of the slide is fixedly connected to the input end of the tool floating plate. The tool fixing plate is fixed on the frame on the side away from the tool floating plate. The slide and the tool floating plate are provided with a guide mechanism.

[0010] A moving blade is arranged on the tool floating plate on the opposite side of the tool fixing plate. The moving blade has two spaced-apart cutting edge arms, namely an upper cutting edge arm and a lower cutting edge arm. A fixed blade is arranged on the tool fixing plate on the opposite side of the tool floating plate. The fixed blade is positioned between the upper cutting edge arm and the lower cutting edge arm. A punching space for flat copper wire is formed between the two cutting edge arms and the fixed blade. The fixed blade has an upper cutting edge and a lower cutting edge. The upper cutting edge arm and the upper cutting edge form a first shearing pair. The lower cutting edge arm and the lower cutting edge form a second shearing pair.

[0011] Furthermore, a stripper plate is fitted on the moving blade, and the stripper plate is elastically connected to the blade floating plate; a fixed blade holder is provided on the blade fixing plate on the opposite side of the blade floating plate, and a blade arm receiving cavity that cooperates with the two blade arms is opened on the opposite side of the blade floating plate, and a fixed blade is provided between the two blade arm receiving cavities.

[0012] Furthermore, the guiding mechanism includes a linear guide rail and a mold guide post. The linear guide rail is disposed opposite to each other on the inner side wall of the frame, and the slider is slidably disposed on the linear guide rail, and the slider can reciprocate along the linear guide rail. The mold guide post is disposed opposite to each other between the tool floating plate and the tool fixing plate, and the tool floating plate can reciprocate along the mold guide post.

[0013] Furthermore, a bushing is embedded in the tool floating plate, and a guide shaft is provided inside the bushing. One end of the guide shaft is connected to the unloading plate, and the other end is provided with a limit baffle. A return spring is sleeved on the guide shaft, and the two ends of the return spring abut against the tool floating plate and the unloading plate, respectively.

[0014] Furthermore, the power source is a servo motor, and the output end of the servo motor is connected to a reducer. The output end of the reducer is connected to the input end of the eccentric wheel linkage mechanism.

[0015] Furthermore, the tool fixing plate is provided with copper wire limiting blocks and two guide blocks on the opposite side of the tool floating plate. The first guide groove in the limiting block, the second guide groove formed between the two guide blocks, and the two cutting edge arms of the moving tool form a feeding channel for flat copper wire.

[0016] Furthermore, it also includes an air blowing and chip removal structure, which includes an air blowing port on the fixed tool holder and a discharge port on the frame near the tool fixing plate.

[0017] The present invention has the following beneficial effects:

[0018] The mold punching method used in this invention removes the enamel coating. The two shearing pairs formed by the moving and fixed blades can process both sides of the flat copper wire at once. Moreover, the action time is independent of the length of enamel coating removed, thereby shortening the production cycle to 1 second, while the traditional peeling method has a cycle of about 1.4 seconds. Furthermore, the punching and blanking of this invention is more complete and cleaner, and the quality of copper retained on the surface of the copper wire is higher. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the eccentric wheel linkage mechanism and the punching die.

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a cross-sectional view of a punching die;

[0023] Figure 5 This is a schematic diagram showing the state of the moving and stationary blades before punching;

[0024] Figure 6 This is a schematic diagram showing the state after the moving and stationary blades have cut.

[0025] Figures 1 to 6 The reference numerals in the attached drawings represent: frame 1, eccentric wheel linkage mechanism 2, slider 21, gear shaft 22, eccentric wheel 23, eccentric wheel sleeve 24, linear guide rail 25, punching die 3, tool floating plate 31, limiting boss 311, guide shaft 312, return spring 313, tool fixing plate 32, moving tool 33, upper cutting edge arm 331, lower cutting edge arm 332, fixed tool 34, unloading plate 35, guide block 36, copper wire limiting block 37, fixed tool holder 38, die guide pillar 39, power source 4, air blowing port 5, flat copper wire 6. Detailed Implementation

[0026] In this invention, the terms "longitudinal," "lateral," "vertical," "up," "down," "front," "back," "left," "right," "top," and "bottom," etc., indicate the orientation or positional relationship based on the appendix. Figure 2The orientation or positional relationship shown is for the purpose of describing the invention only, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0028] Please refer to Figure 1-4 This embodiment describes in detail a copper wire paint removal device, including a frame 1. A power source 4, an eccentric wheel linkage mechanism 2, and a punching die 3 are respectively mounted on the frame 1. The input end of the eccentric wheel linkage mechanism 2 is connected to the power source 4, and a slider 21 is provided between the output end of the eccentric wheel linkage mechanism 2 and the input end of the punching die 3. The eccentric wheel linkage mechanism 2 drives the punching die 3 to reciprocate. The punching die 3 includes a tool floating plate 31 and a tool fixing plate 32 arranged opposite to each other. The output end of the slider 21 is fixedly connected to the input end of the tool floating plate 31. The side of the tool fixing plate 32 away from the tool floating plate 31 is fixed on the frame 1. A guide mechanism is provided on the slider 21 and the tool floating plate 31.

[0029] A movable blade 33 is provided on the tool floating plate 31 on the opposite side of the tool fixing plate 32. The movable blade 33 has two spaced-apart cutting edge arms, namely an upper cutting edge arm 331 and a lower cutting edge arm 332. A fixed blade 34 is provided on the tool fixing plate 32 on the opposite side of the tool floating plate 31. The fixed blade 34 is located between the upper cutting edge arm 331 and the lower cutting edge arm 332. The two cutting edge arms and the fixed blade 34 form a punching space for the flat copper wire 6. The fixed blade 34 has an upper cutting edge and a lower cutting edge. The upper cutting edge arm 331 and the upper cutting edge form a first shearing pair. The lower cutting edge arm 332 and the lower cutting edge form a second shearing pair.

[0030] The frame 1 is used to mount the entire mechanism for removing the enamel coating from flat copper wires. A power source 4, providing power for the coating removal process, is mounted on the frame 1. The power source 4 is connected to the input end of the eccentric wheel linkage mechanism 2, providing it with power. The eccentric wheel linkage mechanism 2 is a modified version of the crank-slider mechanism. The eccentric wheel linkage mechanism 2 drives the punching die 3, connected to the slider 21, to reciprocate, thus realizing the reciprocating motion function of the punching die. The guide mechanism on the slider 21 and the tool floating plate 31 increases the stability of the slider 21 and the tool floating plate 31 during movement.

[0031] The punching die 3 can punch the paint coating on both the upper and lower surfaces of the flat copper wire 6. The punching die 3 includes a tool floating plate 31 and a tool fixing plate 32. The tool floating plate 31 is connected to the slider 21 through a connecting block and reciprocates under the drive of the eccentric wheel linkage mechanism 2. A moving blade 33 is fixedly connected to the tool floating plate 31, and a fixed blade 34 is fixedly installed on the tool fixing plate 32. The fixed blade 34 is installed on the fixed blade holder 38 and has an upper cutting edge and a lower cutting edge. The two cutting edge arms of the moving blade 33 and the fixed blade 34 form a punching space for the flat copper wire 6. The fixed blade 34 is located between the upper cutting edge arm 331 and the lower cutting edge arm 332. The design of the two cutting edge arms of the moving blade 33 can achieve punching two surfaces at once with a simple structure. The setting of the fixed blade 34 can use a single blade to simultaneously cooperate with the upper and lower cutting edges of the moving blade for punching.

[0032] Specifically, the upper cutting arm 331 and the upper cutting edge of the fixed knife 34 form a first shearing pair to punch the paint on the upper surface of the flat copper wire 6, and the lower cutting arm 332 and the lower cutting edge of the fixed knife 34 form a second shearing pair to punch the paint on the lower surface of the flat copper wire. By moving the upper and lower cutting arms of the moving knife synchronously, the paint on both sides can be punched at the same time.

[0033] In a preferred embodiment, a discharge plate 35 is sleeved on the moving blade 33, and the discharge plate 35 is elastically connected to the blade floating plate 31; a fixed blade seat 38 is provided on the blade fixing plate 32 on the opposite side of the blade floating plate 31, and the fixed blade seat 38 on the opposite side of the blade floating plate 31 has a blade arm receiving cavity that cooperates with the two blade arms, and a fixed blade 34 is provided between the two blade arm receiving cavities.

[0034] Reference Figure 4-6 The unloading plate 35 has a mounting groove for accommodating the moving blade 33. The unloading plate 35 is fitted onto the moving blade 33 through the mounting groove. After the slider 21 reaches its farthest point, it begins to retract, driving the moving blade 33 to retract synchronously. At this time, since the flat copper wire 6 is clamped in the cutting space of the moving blade 33 after being punched by the moving blade 33, the retraction of the moving blade 33 will cause the flat copper wire 6 to move. Due to the elasticity between the unloading plate 35 and the tool floating plate 31, the unloading plate 35 will stop at the flat copper wire 6, and the copper wire retaining groove on the unloading plate 35 will hold the flat copper wire 6, preventing the flat copper wire 6 from moving with the retraction of the moving blade 33, thereby realizing the function of pushing the flat copper wire 6 out of the moving blade 33. The two cutting edge arm receiving cavities on the fixed tool holder 38 provide a guiding function for the two cutting edge arms of the moving blade 33. At the same time, the setting of the fixed tool holder 38 provides a stable guarantee for the successful unloading of the unloading plate 35.

[0035] In a preferred embodiment, the guiding mechanism includes a linear guide rail 25 and a mold guide post 39. The linear guide rail 25 is disposed opposite to the inner wall of the frame 1, and the slider 21 is slidably disposed on the linear guide rail 25, allowing the slider 21 to reciprocate along the linear guide rail 25. The mold guide post 39 is disposed opposite to the tool floating plate 31 and the tool fixing plate 32, allowing the tool floating plate 31 to reciprocate along the mold guide post 39. The oppositely disposed linear guide rail 25 increases the motion stability of the slider 21, and the oppositely disposed mold guide post 39 on the tool fixing plate 32 further enhances the motion stability of the tool floating plate 31 during its reciprocating motion.

[0036] In a preferred embodiment, a bushing is embedded in the tool floating plate 31, and a guide shaft 312 is provided inside the bushing. One end of the guide shaft 312 is connected to the unloading plate 35, and the other end is provided with a limiting boss 311. A return spring 313 is sleeved on the guide shaft 312, and the two ends of the return spring 313 abut against the tool floating plate 31 and the unloading plate 35, respectively. The guide shaft 312 slides within the bushing in the tool floating plate 31. An anti-detachment washer is installed on one side of the guide shaft 312, and the other side is connected to the unloading plate 35. Through the force of the return spring 313, the automatic reset and unloading of the unloading plate can be achieved.

[0037] In this preferred embodiment, the power source 4 is a servo motor, and a reducer is connected to the output end of the servo motor. The output end of the reducer is connected to the input end of the eccentric wheel linkage mechanism 2. Through the combined use of the servo motor and the reducer, a precise and controllable driving force can be provided to the eccentric wheel linkage mechanism 2.

[0038] In a preferred embodiment, the tool fixing plate 32 is provided with a copper wire limiting block 37 and two guide blocks 36 on the opposite side of the tool floating plate 31. The first guide groove in the limiting block 37, the second guide groove formed between the two guide blocks 36, and the two cutting edge arms of the moving blade 33 form the feeding channel of the flat copper wire 6. The moving blade 33 with two sets of first guide grooves and second guide grooves arranged opposite to each other on the tool fixing plate 32, together with the two cutting edge arms, forms the feeding channel of the flat copper wire 6. It not only serves as the moving channel for removing the paint from the flat copper wire 6, but also provides guidance and limiting function for paint punching. During the movement of the flat copper wire 6 driven by the wire pulling mechanism (not shown in the figure), the copper wire paint punching operation can be carried out continuously and stably.

[0039] As a preferred embodiment, an air-blowing chip removal structure is also included. This structure includes an air inlet 5 on the fixed tool holder 38 and a discharge port on the frame 1 near the tool fixing plate 32. The gas blown by the air inlet 5 acts within the fixed tool holder 38. Since small chips are difficult to collect and easily splash, the air inlet 5 blows the chips out of the cutting space of the moving blade 33, and the discharge port on the frame 1 removes the chips promptly.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A copper wire coating removal device, characterized in that, The device includes a frame (1), on which a power source (4), an eccentric wheel linkage mechanism (2), and a punching die (3) are respectively provided; the input end of the eccentric wheel linkage mechanism (2) is connected to the power source (4), and a slider (21) is provided between the output end of the eccentric wheel linkage mechanism (2) and the input end of the punching die (3); the eccentric wheel linkage mechanism (2) drives the punching die (3) to reciprocate. The punching die (3) includes a tool floating plate (31) and a tool fixing plate (32) arranged opposite to each other. The output end of the slider (21) is fixedly connected to the input end of the tool floating plate (31). The tool fixing plate (32) is fixed on the frame (1) on the side away from the tool floating plate (31). The slider (21) and the tool floating plate (31) are provided with a guide mechanism. A movable blade (33) is provided on the tool floating plate (31) on the opposite side of the tool fixing plate (32). The movable blade (33) has two spaced-apart cutting edge arms, namely an upper cutting edge arm (331) and a lower cutting edge arm (332). A fixed blade (34) is provided on the tool fixing plate (32) on the opposite side of the tool floating plate (31). The fixed blade (34) is located between the upper cutting edge arm (331) and the lower cutting edge arm (332). A cutting space for the flat copper wire (6) is formed between the two cutting edge arms and the fixed blade (34). The fixed blade (34) has an upper cutting edge and a lower cutting edge. The upper cutting edge arm (331) and the upper cutting edge form a first shearing pair. The lower cutting edge arm (332) and the lower cutting edge form a second shearing pair.

2. The copper wire coating removal device according to claim 1, characterized in that, The moving blade (33) is fitted with a discharge plate (35), which is elastically connected to the blade floating plate (31); the blade fixing plate (32) is provided with a fixed blade seat (38) on the opposite side of the blade floating plate (31), and the fixed blade seat (38) is provided with a blade arm receiving cavity that cooperates with the two blade arms on the opposite side of the blade floating plate (31), and the fixed blade (34) is provided between the two blade arm receiving cavities.

3. The copper wire coating removal device according to claim 1, characterized in that, The guiding mechanism includes a linear guide rail (25) and a mold guide post (39). The linear guide rail (25) is disposed opposite to the inner side wall of the frame (1). The slider (21) is slidably disposed on the linear guide rail (25). The slider (21) can reciprocate along the linear guide rail (25). The mold guide post (39) is disposed opposite to the tool floating plate (31) and the tool fixing plate (32). The tool floating plate (31) can reciprocate along the mold guide post (39).

4. The copper wire coating removal device according to claim 2, characterized in that, The tool floating plate (31) is fitted with a bushing, and a guide shaft (312) is provided inside the bushing. One end of the guide shaft (312) is connected to the unloading plate (35), and the other end is provided with a limiting baffle (314). A return spring (313) is sleeved on the guide shaft (312), and the two ends of the return spring (313) abut against the tool floating plate (31) and the unloading plate (35) respectively.

5. The copper wire coating removal device according to claim 1, characterized in that, The power source (4) is a servo motor, and the output end of the servo motor is connected to a reducer. The output end of the reducer is connected to the input end of the eccentric wheel linkage mechanism (2).

6. The copper wire coating removal device according to claim 1, characterized in that, The tool fixing plate (32) is provided with a copper wire limiting block (37) and two guide blocks (36) on the opposite side of the tool floating plate (31). The first guide groove in the limiting block (37), the second guide groove formed between the two guide blocks (36), and the two cutting edge arms of the moving knife (33) form the feeding channel of the flat copper wire (6).

7. The copper wire coating removal device according to claim 2, characterized in that, It also includes an air blowing chip removal structure, which includes an air blowing port (5) provided on the fixed tool holder (38) and a discharge port opened on the frame (1) near the tool fixing plate (32).

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