Adjustable paint stripping knife

Abstract

An adjustable paint stripping knife comprises a fixing assembly, a paint stripping assembly and an adjusting disc. The fixing assembly comprises a rotating shaft, a first fixing block, three connecting shafts and a second fixing block. The end, close to the first fixing block, of the rotating shaft is an abutting end. The paint stripping assembly comprises a lever, a paint stripping knife and a limiting rod. The weight of the end, provided with the paint stripping knife, of the lever is smaller than that of the end, provided with the limiting rod, of the lever. The abutting end is located in the rotating direction of the lever, and the lever can abut against the abutting end when rotating, so that the abutting end can limit the maximum rotating angle of the lever. The maximum rotating angle of the lever in the radial direction of the rotating shaft can be controlled by controlling the abutting point of the lever and the abutting end, the paint stripping device is suitable for wires with different diameters, the three paint stripping knives can be attached to the wires in the rotating process regardless of the thickness of the wires, and the paint stripping precision is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of wire paint stripping devices, in particular to an adjustable paint stripping knife. Background Art

[0002] Coil usually refers to a ring-shaped wire winding. Coils are most commonly used in motors, inductors, transformers and loop antennas. Generally, the wires are wound one by one, and the wires are insulated from each other. The wires of the coil are generally enameled wires. Enameled wire refers to a metal wire with insulating varnish as an insulating coating used to wind electromagnetic coils. When the enameled wire is used, the wire ends need to be depainted because the wire ends need to be wound on the conductive terminals of the coil frame. The general depainting process is to remove the paint manually with a paint scraper or use a paint stripping device to strip the paint. The paint stripping assembly in the prior art is disclosed in the technical document with application number CN202320206853.5 and patent name as an automatic paint stripping device for inductor coil pins. The inductor coil pin is inserted into the guide cylinder to enter the inside of the rotating cylinder. The inductor coil pin slowly moves forward until a number of adjustable paint stripping knives abut the outer surface of the inductor coil pin. At this time, the motor is started, the motor output shaft rotates to drive the rotating cylinder, the rotating cylinder rotates to drive the bracket to rotate, the bracket rotates to drive the connecting shaft to rotate, and the connecting shaft rotates to drive a number of adjustable paint stripping knives to rotate, thereby stripping the paint on the outer surface of the inductor coil pin. The automatic paint stripping device has a high degree of automation, which solves the problem that the current paint stripping process is all manually operated, and manual paint stripping of the inductor coil pin is time-consuming and labor-intensive, inefficient, and has high labor costs. However, when stripping wires of different thicknesses, the entire mechanism needs to be replaced, which is difficult to adjust quickly. Summary of the invention

[0003] In view of this, the present invention provides an adjustable paint stripping knife to solve the above technical problems.

[0004] An adjustable paint stripping knife comprises a fixed component, three paint stripping components arranged on the fixed component, and an adjustment disk arranged on the rotating shaft. The fixed component comprises a rotating shaft, three first fixed blocks arranged on the rotating shaft, three connecting shafts arranged on the first fixed blocks, and three second fixed blocks arranged on the rotating shaft. The abutting top is located on the side of the lever where the paint stripping knife is arranged, and the paint stripping component comprises a lever arranged on the connecting shaft, a paint stripping knife arranged at one end of the lever, and a limiting rod arranged at the other end of the lever. The weight of the end of the lever where the paint stripping knife is arranged is less than the weight of the end of the lever where the limiting rod is arranged, and the lever will touch the abutting top after rotation, and three interval-arc sliding grooves are arranged on the adjustment disk, one end of the limiting rod is integrally formed with the lever, and the other end is slidably arranged in the sliding groove, and the extending direction of the sliding groove is from the center of the adjustment disk to the edge of the adjustment disk.

[0005] Furthermore, three first fixed blocks are distributed circumferentially on the outer wall of the rotating shaft and are spaced apart from each other, three second fixed blocks are distributed circumferentially on the outer wall of the rotating shaft and are spaced apart from each other, and positions of the second fixed blocks correspond to positions of the first fixed blocks.

[0006] Furthermore, the middle position of the lever is rotatably connected to the connecting shaft.

[0007] Furthermore, a clamping spring is also arranged on the rotating shaft, and the clamping spring and the second fixing block clamp the adjusting disk in the middle.

[0008] Furthermore, the paint stripping assembly also includes a spring arranged between the lever and the rotating shaft, one end of the spring is connected to the outer side wall of the rotating shaft, and the other end of the spring is connected to the end surface of the lever facing the rotating shaft. The spring is located between the connecting shaft and the paint stripping knife, so that the spring presses against one end of the lever provided with the paint stripping knife.

[0009] Compared with the prior art, the adjustable paint stripping knife provided by the present invention sets the weight of the lever so that the weight of the end of the lever provided with the paint stripping knife is less than the weight of the end of the lever provided with the limit rod. When the rotating shaft drives the paint stripping assembly to rotate, the end of the lever with the heavier weight will rotate in a direction away from the central axis of the rotating shaft under the action of centrifugal force, so that the three paint stripping knives fit the wire. The abutting top is located in the rotation direction of the lever, and the lever will abut on the abutting top when rotating, so that the abutting top can limit the maximum rotation angle of the lever. By controlling the abutment point between the lever and the abutting top, the maximum rotation angle of the lever in the radial direction along the rotating shaft can be controlled, which can adapt to wires of different wire diameters. The adjusting disk can ensure the synchronization of the rotation of the three paint stripping assemblies, ensure that the rotation amplitudes of the three paint stripping assemblies are the same, and avoid the phenomenon of different paint stripping depths. At the same time, the vibration of the paint stripping assembly is reduced when stripping the wire, and the stability is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The present invention is a schematic structural diagram of an adjustable paint stripping knife.

[0011] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the adjustable paint stripping knife.

[0012] Figure 3 for Figure 1 Another angled schematic diagram of the adjustable paint stripping knife.

[0013] Figure 4 for Figure 1 A schematic structural diagram of the paint stripping assembly of the adjustable paint stripping knife.

[0014] Figure 5 for Figure 1 A side view of the adjustable paint stripping knife.

[0015] Explanation of the reference numerals: fixed assembly 10, rotating shaft 11, top end 111, first fixed block 12, connecting shaft 13, second fixed block 14, paint stripping assembly 20, lever 21, paint stripping knife 22, spring 23, limiting rod 24, adjusting disk 30, sliding groove 31, retaining spring 32. DETAILED DESCRIPTION

[0016] The specific embodiments of the present invention are further described in detail below. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0017] like Figures 1 to 5As shown, it is a schematic diagram of the structure of the adjustable paint stripping knife provided by the present invention. The adjustable paint stripping knife includes a fixed component 10, three paint stripping components 20 arranged on the fixed component 10, and an adjustment disk 30 arranged on the fixed component 10. It can be imagined that the adjustable paint stripping knife also includes some other functional modules, such as a connecting component and an installation component, etc., which are well known to those skilled in the art and will not be repeated here.

[0018] The fixing assembly 10 includes a rotating shaft 11 , three first fixing blocks 12 spaced apart on the rotating shaft 11 , three connecting shafts 13 spaced apart on the first fixing blocks 12 , and three second fixing blocks 14 spaced apart on the rotating shaft 11 .

[0019] The rotating shaft 11 is used to set the above-mentioned functional modules, that is, to set the adjustable paint stripping knife on a device, such as on a winding machine. Therefore, the rotating shaft 11 is provided with a variety of functional structures, such as screws, bolts, mounting holes, etc. to complete the installation and assembly of the above-mentioned functional modules. It can be set according to actual needs and will not be described in detail one by one here. One end of the rotating shaft 11 is connected to an external rotating device and rotates, thereby driving the paint stripping assembly 20 to rotate for paint stripping. The other end of the rotating shaft 11, that is, the end close to the first fixed block 12, is a top end 111, and the top end 111 is used to resist and limit the paint stripping assembly 20. The specific description will be described below in conjunction with the paint stripping assembly 20.

[0020] The three first fixing blocks 12 are distributed in a circumferential manner on the outer side wall of the rotating shaft 11 and are spaced apart from each other. The space between two adjacent first fixing blocks 12 is used to set the paint stripping assembly 20 and the connecting shaft 13 .

[0021] The connecting shaft 13 connects two adjacent first fixing blocks 12, so that the three first fixing blocks 12 are tightly held on the rotating shaft 11, and the connecting shaft 13 is also used to support the rotation of the paint stripping assembly 20. The connecting shaft 13 can be a bolt, which is screwed between two adjacent first fixing blocks 12, so that it not only plays the role of fixing the first fixing blocks 12, but also serves as the rotating shaft of the lever 21 described below of the paint stripping assembly 20.

[0022] The three second fixing blocks 14 are circumferentially distributed on the outer side wall of the rotating shaft 11 and are spaced apart from each other, and the space between two adjacent second fixing blocks 14 is used to set the paint stripping assembly 20. The positions of the second fixing blocks 14 correspond to the positions of the first fixing blocks 12 and are aligned along the axial direction of the rotating shaft 11.

[0023] The paint stripping assembly 20 includes a lever 21 arranged on the connecting shaft 13, a paint stripping knife 22 arranged at one end of the lever 21, a spring 23 arranged between the lever 21 and the rotating shaft 11, and a limiting rod 24 arranged at the other end of the lever 21.

[0024] The lever 21 is mounted on the connecting shaft 13 and can rotate around the connecting shaft 13, and the connection position of the lever 21 and the connecting shaft 13 can be set according to actual needs. In this embodiment, the connecting shaft 13 is set at the middle position of the lever 21. Through the size design of the lever 21, the weight of the end of the lever 21 provided with the paint stripping knife 22 is less than the weight of the end of the lever 21 provided with the limit rod 24, so that when the rotating shaft 11 drives the paint stripping assembly 20 to rotate, the heavier end of the lever 21 will rotate in the direction away from the central axis of the rotating shaft 11 under the action of centrifugal force, thereby causing the paint stripping knives 22 of the three paint stripping assemblies 20 to rotate in the direction close to the central axis of the rotating shaft 11, so that the three paint stripping knives 22 fit the wires for stripping.

[0025] The abutting top 111 is located on the side of the lever 21 where the paint stripping knife 22 is provided. Therefore, one side of the lever 21 will abut against the abutting top 111 when rotating around the central axis of the rotating shaft 11, so that the abutting top 111 can limit the maximum rotation angle of the lever 21 in the radial direction of the rotating shaft 11. By controlling the abutting point between the lever 21 and the abutting top 111, the maximum rotation angle of the lever 21 in the radial direction of the rotating shaft 11 can be controlled. Therefore, by adjusting the position of the first fixed block 12 on the rotating shaft 11, the abutting point between the lever 21 and the abutting top 111 can be changed, and then the minimum diameter of the space enclosed by the three paint stripping knives 22 when they are closed can be controlled, so as to achieve the purpose of adjusting the minimum diameter of the space enclosed by the three paint stripping knives 22 when they are closed, so that the position of the first fixed block 12 can be adjusted to adapt to wires with different wire diameters, that is, the three paint stripping knives 22 can fit with the wires within a certain wire diameter range during the rotation process, so as to ensure the paint stripping accuracy.

[0026] One end of the spring 23 is connected to the outer wall of the rotating shaft 11, and the other end of the spring 23 abuts against one end of the lever 21 toward the abutting top 111, so that the spring 23 is arranged between the rotating shaft 11 and the lever 21 along the radial direction of the rotating shaft 11 and is located between the connecting shaft 13 and the paint stripping knife 22 along the axial direction of the rotating shaft 11, so that the spring 23 abuts against one end of the lever 21 provided with the paint stripping knife 22. When the rotating shaft 11 does not rotate, the end of the lever 21 provided with the paint stripping knife 22 is lifted up by the elastic force of the spring 23 itself, so that when the rotating shaft 11 does not rotate, the three paint stripping knives 22 will move away from each other and will not abut on the wire. In addition, a limiting groove can be provided at the connection between the rotating shaft 11 and the spring 23 to prevent the spring 23 from moving. The spring 23 is fixedly spot-welded on the lever 21, and when the relative position of the lever 21 and the rotating shaft 11 is adjusted, the spring 23 moves with the lever 21.

[0027] The limiting rod 24 is located on the end surface of the lever 21 facing the adjusting disk 30, one end of the limiting rod 24 is integrally formed with the lever 21, and the other end is slidably disposed on the adjusting disk 30. The limiting rod 24 has a certain length, so that when the first fixing block 12 drives the lever 21 to move, it can be ensured that one end of the limiting rod 24 is always inserted into the adjusting disk 30.

[0028] The adjusting disk 30 is provided with three intervally arranged and arc-shaped sliding grooves 31. The extending direction of the sliding groove 31 is from the center of the adjusting disk 30 to the edge of the adjusting disk 30. One end of the limiting rod 24 is slidably inserted in the sliding groove 31. When the rotating shaft 11 drives the heavier end of the lever 21 to rotate in the direction away from the central axis of the rotating shaft 11 under the action of centrifugal force, the limiting rod 24 will also move in the direction away from the rotating shaft 11, but because the limiting rod 24 is located in the arc-shaped sliding groove 31 and can only move along the sliding groove 31, the force will be tilted to drive the adjusting disk 30 to rotate. Since the three paint stripping assemblies 20 are all connected to the adjusting disk 30, the synchronization of the radial rotation of the three paint stripping assemblies 20 along the rotating shaft 11 can be ensured, and the rotation amplitude of the three paint stripping assemblies 20 along the radial direction of the rotating shaft 11 is ensured to be the same, thereby avoiding the phenomenon of different paint stripping depths. At the same time, the vibration of the paint stripping assembly 20 along the radial direction of the rotating shaft 11 can be reduced during wire stripping, thereby improving stability. In order to improve the stability of the rotation of the adjusting disk 30, a clamping spring 32 is further provided on the rotating shaft 11, and the clamping spring 32 and the second fixing block 14 sandwich the adjusting disk 30 in the middle, thereby positioning the adjusting disk 30 so that it can only rotate but cannot move axially.

[0029] Compared with the prior art, the adjustable paint stripping knife provided by the present invention sets the weight of the lever 21, so that the weight of the end of the lever 21 provided with the paint stripping knife 22 is less than the weight of the end of the lever 21 provided with the limit rod 24. When the rotating shaft 11 drives the paint stripping assembly 20 to rotate, the end of the lever 21 with a heavier weight will rotate in a direction away from the central axis of the rotating shaft 11 under the action of centrifugal force, so that the three paint stripping knives 22 are in contact with the wire. The abutting top 111 is located in the rotation direction of the lever 21, and the lever 21 will abut against the abutting top 111 when rotating, so that the abutting top 111 can limit the maximum rotation angle of the lever 21. By controlling the abutting point between the lever 21 and the abutting top 111, the maximum rotation angle of the lever 21 in the radial direction along the rotating shaft 11 can be controlled, and wires of different wire diameters can be adapted. The adjusting disk 30 can ensure the synchronization of the rotation of the three paint stripping assemblies 20, ensure that the rotation amplitudes of the three paint stripping assemblies 20 are the same, and avoid the phenomenon of different paint stripping depths. At the same time, the vibration of the paint stripping assembly 20 is reduced during wire stripping, thereby improving stability.

[0030] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention is included in the scope of the claims of the present invention.

Claims

1. An adjustable paint stripping knife, characterized by: The adjustable paint stripping knife includes a fixed component, three paint stripping components arranged on the fixed component, and an adjusting disk arranged on the fixed component, the fixed component includes a rotating shaft, three first fixed blocks arranged on the rotating shaft, three connecting shafts arranged on the first fixed block, and three second fixed blocks arranged on the rotating shaft, the end of the rotating shaft close to the first fixed block is an abutting top, the paint stripping component includes a lever arranged on the connecting shaft, a paint stripping knife arranged at one end of the lever, and a limiting rod arranged at the other end of the lever, the abutting top is located on the side of the lever where the paint stripping knife is arranged, the weight of the end of the lever where the paint stripping knife is arranged is less than the weight of the end of the lever where the limiting rod is arranged, and the lever will touch the abutting top after rotation, and three sliding grooves arranged at intervals and in an arc shape are arranged on the adjusting disk, one end of the limiting rod is integrally formed with the lever, and the other end is slidably arranged in the sliding groove, and the extending direction of the sliding groove is from the center of the adjusting disk toward the edge of the adjusting disk.

2. The adjustable paint stripping knife according to claim 1, characterized in that: Three first fixing blocks are circumferentially distributed on the outer wall of the rotating shaft and spaced apart from each other, and three second fixing blocks are circumferentially distributed on the outer wall of the rotating shaft and spaced apart from each other, and positions of the second fixing blocks correspond to positions of the first fixing blocks.

3. The adjustable paint stripping knife according to claim 1, characterized in that: The middle position of the lever is rotatably connected to the connecting shaft.

4. The adjustable paint stripping knife according to claim 1, characterized in that: A clamping spring is also arranged on the rotating shaft, and the clamping spring and the second fixing block clamp the adjusting disk in the middle.

5. The adjustable paint stripping knife according to claim 1, characterized in that: The paint stripping assembly also includes a spring arranged between the lever and the rotating shaft, one end of the spring is connected to the outer side wall of the rotating shaft, and the other end of the spring is connected to the end surface of the lever facing the rotating shaft. The spring is located between the connecting shaft and the paint stripping knife, so that the spring presses against one end of the lever provided with the paint stripping knife.

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