Brush needle bending die

Abstract

The utility model is suitable for the field of brush motor manufacturing, and provides a brush needle bending die which is used for bending a brush needle, the brush needle is provided with a first functional area and a second functional area which are located on the two sides of a bending line, and the brush needle bending die comprises a carrying table provided with a containing area for containing the first functional area; the pressing piece is provided with a pressing surface and a shaping surface which are oppositely arranged, and the shaping surface is opposite to the carrying table and used for being matched with the carrying table to clamp the first functional area; the bending piece can rotate to be converted between an initial state and an operation state, the bending piece is provided with an abutting face, when the bending piece is in the initial state, the horizontal position of the abutting face is not higher than the placement area so as to avoid placement of the brush needle, and when the bending piece is in the operation state, the horizontal position of the abutting face is not higher than the placement area. The abutting surface abuts against the second functional area and forces the second functional area to approach the shaping surface until the second functional area abuts against the shaping surface. According to the brush needle bending die provided by the invention, the brush needles with micro sizes can be accurately bent, and the machining quality and consistency of the brush needles are ensured.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of brush motor preparation, and particularly relates to a brush needle bending die. BACKGROUND

[0002] The brush needle of a brush motor is small in size, such as a brush needle 1 mm wide and 6.8 mm long. It is difficult to bend the brush needle. If existing bending equipment is used, it is difficult to effectively fix and bend the small brush needle. If the brush needle is bent by hand, the bending position is not accurate, the bending angle is difficult to control, and the efficiency is low. Therefore, a bending jig suitable for the brush needle needs to be developed. CONTENT OF THE UTILITY MODEL

[0003] The application aims to overcome the shortcomings of the prior art and provide a brush needle bending die suitable for small brush needles.

[0004] The application provides a brush needle bending die for bending a brush needle, the brush needle having a first functional area and a second functional area on both sides of a bending line, comprising:

[0005] A carrier having a placement area for placing the first functional area;

[0006] A pressing member having opposite pressing surfaces and shaping surfaces, the shaping surfaces being opposite to the carrier and being used to clamp the first functional area in cooperation with the carrier;

[0007] A bending member capable of rotating between an initial state and a working state, the bending member having a pressing surface, the horizontal position of the pressing surface being not higher than the placement area to avoid the placement of the brush needle when the bending member is in the initial state, and the pressing surface pressing the second functional area and forcing the second functional area to approach the shaping surface until the shaping surface is contacted when the bending member is in the working state.

[0008] Optionally, the brush needle bending die further comprises a positioning assembly for carrying and positioning the second functional area.

[0009] Optionally, the positioning assembly is movably arranged and capable of adjusting the distance between the positioning assembly and the carrier.

[0010] Optionally, the pressing member is capable of rotating between an avoiding state for avoiding the placement of the first functional area and a pressing state for clamping the first functional area.

[0011] Optionally, the brush needle bending die further comprises an operating member for driving the pressing member to press the first functional area.

[0012] Optionally, the brush needle bending die further includes an elastic element, which undergoes elastic deformation when the operating member drives the pressing member to rotate and press against the first functional area, and drives the pressing member to return to the avoidance state after the pressure of the operating member disappears.

[0013] Optionally, the bent member is rod-shaped, with bearings connected to both ends, and the bent member is offset from the rotation axis of the bearings.

[0014] Optionally, the brush needle bending die also includes an operating handle for driving the bent part to rotate.

[0015] Optionally, the brush needle bending die may further include a limiting member for restricting the rotation angle of the operating handle.

[0016] Optionally, the placement area of ​​the platform for placing the first functional area is a plane; the shaping surface is a plane.

[0017] Optionally, the pressing component is detachable, and the angle between the pressing surface and the shaping surface is 13-30 degrees.

[0018] The brush needle bending die provided in this application achieves precise bending of tiny brush needles through the cooperation of the pressing part, the platform and the bending part. By precisely controlling the key parameters such as the bending angle, radius of curvature and reserved length of the brush needle through the shape of the pressing part and its cooperation with the platform, the quality and consistency of the brush needle processing are ensured. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the brush needle in a flat state in an embodiment of this application, and is a top view;

[0021] Figure 2 This is a schematic diagram of the brush needle bending state in an embodiment of this application, and is a front view;

[0022] Figure 3 This is a three-dimensional structural schematic diagram of the brush needle bending mold provided in the embodiments of this application;

[0023] Figure 4 yes Figure 3 Top view of the structure;

[0024] Figure 5 yes Figure 3 Disassembly diagram of the structure;

[0025] Figure 6 is Figure 3 a sectional view of the structure;

[0026] Figure 7 is Figure 6 a structure enlarged view of a partial A in the middle;

[0027] Figure 8 is Figure 7 a structure enlarged view of a partial B in the middle;

[0028] Figure 9 is Figure 3 a structure enlarged view of a partial G in the middle.

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 10, brush needle; 11, first functional area; 12, second functional area; 20, brush needle bending mold; 21, carrier; 22, pressing member; 23, bending member; 24, positioning assembly; 241, positioning table; 242, base; 25, operating member; 26, elastic member; 28, operating handle; 29, limiting member. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0032] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0033] It should also be noted that the left, right, up and down orientation terms in the embodiments of the present application are only relative concepts or are with reference to the normal use state of the product, and should not be considered as limiting.

[0034] Please combine Figures 1 to 9 with the description of the brush needle bending mold 20 provided by the present application. The brush needle 10 bending mold provided by the present application is used to bend the brush needle 10.

[0035] Please combine Figure 1 and Figure 2, the brush pin 10 has a first functional area 11 and a second functional area 12 located on both sides of the bending line C1. The brush pin 10 is the brush pin of the existing brush motor. For the convenience of description, the part of the brush pin 10 along the two sides of the bending line C1 is respectively named as the first functional area 11 and the second functional area 12. Figure 1 The figure is a schematic view of the flat state of the brush pin 10. The brush pin 10 bending tool bends the brush pin 10 along the bending line C1. The structure after bending is shown in Figure 2 .

[0036] Please refer to Figure 3 and Figure 8 , the brush pin bending tool 20 includes a carrier 21, a pressing member 22 and a bending member 23.

[0037] The carrier 21 has a placement area for placing the first functional area 11.

[0038] The pressing member 22 has a pressing surface and a shaping surface arranged oppositely. The shaping surface is opposite to the carrier 21 and is used to cooperate with the carrier 21 to clamp the first functional area 11.

[0039] The bending member 23 can rotate to transform between an initial state and a working state. The bending member 23 has a pressing surface. When the bending member 23 is in the initial state, the horizontal position of the pressing surface is not higher than the placement area to avoid the placement of the brush pin 10. When the bending member 23 is in the working state, the pressing surface presses the second functional area 12 and forces the second functional area 12 to approach the shaping surface until the shaping surface is contacted.

[0040] In this application, the clamping and fixing of the first functional area 11 of the brush pin 10 is realized by the cooperation of the pressing member 22 and the carrier 21. Then the brush pin 10 is bent and shaped by the pushing of the bending member 23 to fit the surface of the bending member 23.

[0041] It can be understood that the clamping range of the pressing member 22 and the carrier 21 determines the position of the bending line of the brush pin 10 to the maximum extent. The shape of the pressing member 22 determines the bending result of the brush pin 10 to the maximum extent. Specifically, please refer to Figure 8 , the shaping surface and the pressing surface of the pressing member 22 form an included angle E, which determines the maximum angle D that the brush pin 10 can be bent. The circular arc transition between the pressing surface and the shaping surface determines the maximum curvature radius of the bending of the brush pin 10.

[0042] The brush pin bending tool 20 provided in this application realizes the accurate bending of the brush pin 10 with a small size through the cooperation of the pressing member 22, the carrier 21 and the bending member 23. The key parameters such as the bending angle, the curvature radius and the reserved length of the brush pin 10 are accurately controlled through the shape of the pressing member 22 and the cooperation with the carrier 21, so as to ensure the quality and consistency of the processing of the brush pin 10.

[0043] In the embodiment, the pressing members 22 are detachably arranged. Each of the pressing members 22 has a fixed shape. The bending angle D and the curvature radius of the brush needle 10 can be flexibly adjusted by replacing the pressing members 22.

[0044] Preferably, the included angle E between the pressing surface and the shaping surface is 13-30 degrees. The included angle E can be specifically set to 13°, 15°, 16°, 18°, 18.5°, 19°, 20°, 21°, 22°, 23°, 24.6°, 25°, 26°, 26.8°, 27°, 28°, 28.5°, 30°, etc. according to actual needs, which are not limited herein.

[0045] In the embodiment, the surface of the carrier 21 for placing the first functional area 11 is a plane; the pressing surface and the shaping surface are planes. The brush needle 10 has a sheet structure. The placing area of the carrier 21, the occlusal surface of the pressing member 22 and the shaping surface are all set to be planes, so as to ensure that the stress of the brush needle 10 during the bending process is a uniform load, and the brush needle 10 is bent at the designed angle, avoiding torsion or other deformation.

[0046] In another embodiment of the present application, please refer to Figure 3 and Figure 9 The brush needle bending mold 20 further comprises a positioning assembly 24 for carrying and positioning the second functional area 12.

[0047] The brush needle 10 comprises the first functional area 11 and the second functional area 12. Before bending, the brush needle 10 needs to be accurately positioned. In theory, the first functional area 11 and the second functional area 12 can be positioned separately, or the entire brush needle 10 can be positioned. In the embodiment, the positioning assembly 24 is arranged to position the second functional area 12, so as to realize the positioning of the brush needle 10. The advantage of the arrangement is that it can simplify the requirements of the carrier 21. Under the design, the carrier 21 only provides a plane to cooperate with the pressing member 22 to realize clamping and fixing. Thus, the interference problem between the positioning structure and the clamping function on the carrier 21 can be effectively avoided.

[0048] In addition, the positioning function is separated from the clamping function, and the positioning function is provided by the positioning assembly 24. Under the design, the positioning assembly 24 can be adjusted or replaced according to needs to adapt to different brush needles 10, so as to expand the application range of the mold.

[0049] In another embodiment of the present application, please refer to Figure 8 and Figure 9The positioning assembly 24 is movably arranged and can adjust the distance between the positioning assembly 24 and the carrier 21. In combination with the foregoing, the second functional area 12 of the brush pin 10 is positioned and fixed by the positioning assembly 24, and the positioning assembly 24 can be close to or away from the carrier 21, so as to adjust the range of the first functional area 11 to reach the area of the carrier 21, so as to adjust the position of the bending line. In other words, through the adjustable arrangement of the positioning assembly 24, the position of the bending line of the brush pin 10 can be adjusted as needed.

[0050] Please refer to Figure 5 The positioning assembly 24 includes a base 242 and a positioning table 241, the base 242 is provided with a sliding rail, and the positioning table 241 is provided with a positioning portion for positioning the second functional area 12, and the positioning table 241 is in sliding connection with the sliding rail to adjust the distance between the positioning table 241 and the carrier 21.

[0051] In the embodiment, the positioning portion is designed as a precise plug-in piece, which ensures the accurate positioning of the brush pin 10 during the bending process, prevents the phenomenon of eccentric wear, and improves the processing precision.

[0052] In another embodiment of the present application, the pressing member 22 can rotate to switch between the avoiding state of avoiding the first functional area 11 and the pressing state of clamping the first functional area 11. Please refer to Figure 5 Both ends of the rotating shaft of the pressing member 22 are fixed on the bracket through bearings. The axes of the two bearings are the rotating axis C3 of the pressing member 22. The pressing member 22 is rotatably arranged to avoid the operation of placing the second functional area 12 on the carrier 21.

[0053] In another embodiment of the present application, please refer to Figure 3 and Figure 6 The brush pin bending die 20 further includes an operating member 25 for driving the pressing member 22 to press the first functional area 11. In the bending process, the pressing member 22 needs to provide sufficient pressure to ensure that the first functional area 11 will not be displaced. The provision of the pressure can be realized by the torsional force on the pressing member 22. In the present scheme, the operating member 25 provides a concentrated load on the pressing member 22, and drives the pressing member 22 to rotate towards the carrier 21 to press the first functional area 11. In the present embodiment, the operating member 25 is manually operated, and in other embodiments, the operating member 25 can also be arranged as a mechanical or electric operation, which is not limited herein.

[0054] In another embodiment of the present application, please refer to Figure 6 and Figure 7The brush needle bending die 20 also includes an elastic element 26. The elastic element 26 undergoes elastic deformation when the operating member 25 drives the pressing member 22 to rotate and press against the first functional area 11, and after the pressure from the operating member 25 disappears, it drives the pressing member 22 to return to its avoidance state. The elastic element 26 ensures that the pressing member 22 is initially in a avoidance state, moving away from the platform 21 to avoid the first functional area 11. Then, when the operating member 25 pushes the pressing member 22 to rotate towards the platform 21, the elastic element 26 undergoes elastic deformation. After bending the brush needle 10 is completed, the operating member 25 leaves the pressing member 22, releasing the concentrated load on the pressing member 22. Under the elastic restoring force of the elastic element 26, the pressing member 22 rotates away from the platform 21 and returns to its avoidance state.

[0055] In another embodiment of this application, please refer to Figure 5 The bending member 23 is rod-shaped, with bearings connected to both ends. The bending member 23 is offset from the rotation axis C2 of the bearings. The rotation of the bending member 23 drives the second functional area 12 to bend towards the first functional area 11, achieving the bending of the brush. By offsetting the bending member 23 from the rotation axis C2, the arc of the pressing member 22 is matched, forming the required radius of curvature for the brush needle 10. The position between the bending member 23 and the platform 21 is fixed. The design of the bending member 23 offsetting from the rotation axis and the precise control of the gap between it and the platform 21 ensure the accuracy of the bending radius of curvature and prevent the brush needle 10 from breaking due to excessive stress.

[0056] In the illustrated structure, the bending component 23 is a horizontally extending rod-shaped part with its upper surface serving as a pressure surface. The bending component 23 is a slender rod-shaped part, with both ends fixed by bearings. The forces at both ends are evenly distributed to prevent twisting of the bending component 23, thereby ensuring the quality of the bending of the brush needle 10.

[0057] In another embodiment of this application, please refer to Figure 5 The brush needle bending die 20 also includes an operating handle 28 for driving the bent part 23 to rotate. The operating handle 28 can be connected to the bent part 23 via a connector or directly. The operating handle 28 is for manual operation, so as to better control the rotation amplitude and pressure application time of the bent part 23.

[0058] In another embodiment of this application, please refer to Figure 3 and Figure 4 The brush needle bending die 20 also includes a limiting member 29 for limiting the rotation angle of the operating handle 28. The limiting member 29 can effectively prevent damage to the brush needle 10 or the die caused by excessive bending of the bending part 23, and ensure the consistency of the bending angle each time.

[0059] Preferably, the height of the limiting member 29 is adjustable so that the operator can adjust it according to the bending angle required for the bending member 23, thereby improving the applicability of the product.

[0060] In combination Figures 1 to 9 , the operation process of the structure is explained as follows: Figure 3

[0061] For the convenience of explanation, the positions of the carrier 21 and the positioning assembly 24 are defined as front and back, and the pressing member 22 is above the carrier 21.

[0062] Please refer to Figure 4 , in the initial state, the operating member 25 is rotated forward to be away from the pressing member 22. The pressing member 22 is rotated forward to be away from the carrier 21. The bending member 23 is located at the back side of the carrier 21.

[0063] Positioning and placing: the second functional area 12 of the brush needle 10 is placed on the positioning table 241 of the positioning assembly 24, and is fixed by the positioning part on the positioning table 241. The position of the bending line is adjusted by pushing the positioning table 241 to slide relative to the base 242.

[0064] Clamping and fixing: the operating member 25 is rotated backward by hand, and then the pressing member 22 is pushed to rotate backward to press and paste the first functional area 11 on the carrier 21.

[0065] Bending: the operating handle 28 is rotated forward by hand to drive the bending member 23 to rotate forward until the operating handle 28 abuts against the limiting member 29. At this time, the second functional area 12 is bent and formed forward under the pushing of the bending member 23.

[0066] Structure resetting: the operating handle 28 is rotated backward to drive the bending member 23 to rotate backward to reset. Then the operating member 25 is rotated forward to reset, and the pressing member 22 is rotated forward to reset under the action of the elastic member 26.

[0067] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.​

Claims

1. A brush needle bending die for bending brush needles, wherein the brush needle has a first functional area and a second functional area located on both sides of the bending line, characterized in that, include: The platform has a placement area for placing the first functional area; The pressing component has a pressing surface and a shaping surface that are arranged opposite to each other. The shaping surface is opposite to the platform and is used to cooperate with the platform to clamp the first functional area. A bent component capable of rotation and transitioning between an initial state and a working state, the bent component having a pressing surface, wherein when the bent component is in the initial state, the horizontal position of the pressing surface is not higher than the placement area to avoid the placement of the brush needle, and when the bent component is in the working state, the pressing surface presses against the second functional area and forces the second functional area to move closer to the shaping surface until it touches the shaping surface.

2. The brush needle bending die as described in claim 1, characterized in that, The brush needle bending die also includes a positioning component for supporting and positioning the second functional area.

3. The brush needle bending die as described in claim 2, characterized in that, The positioning component is movable, allowing for adjustment of its distance from the platform.

4. The brush needle bending die as described in claim 1, characterized in that, The pressing member can rotate and switch between a clearance state where it is positioned to avoid the first functional area and a pressing state where it clamps the first functional area.

5. The brush needle bending die as described in claim 4, characterized in that, The brush needle bending die also includes an operating component for driving the pressing component to press against the first functional area.

6. The brush needle bending die as described in claim 5, characterized in that, The brush needle bending die also includes an elastic element, which undergoes elastic deformation when the operating member drives the pressing member to rotate and press against the first functional area, and drives the pressing member to return to the avoidance state after the pressure of the operating member disappears.

7. The brush needle bending die as described in claim 1, characterized in that, The bent component is rod-shaped, with bearings connected to both ends, and the bent component is offset from the rotation axis of the bearings.

8. The brush needle bending die as described in claim 7, characterized in that, The brush needle bending die also includes an operating handle for driving the bent part to rotate; the brush needle bending die also includes a limiting member for limiting the rotation angle of the operating handle.

9. The brush needle bending die as described in any one of claims 1 to 8, characterized in that, The placement area of ​​the platform for placing the first functional area is a plane; the shaping surface is a plane.

10. The brush needle bending die as described in any one of claims 1 to 8, characterized in that, The pressing component is detachable, and the angle between the pressing surface and the shaping surface is 13-30 degrees.

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