Coil winding device

Abstract

The utility model relates to the field of winding machines, and particularly discloses a coil winding device which comprises a workbench and a winding mechanism, the winding mechanism comprises a tubular wire outlet device and a driving assembly for driving the wire outlet device to rotate, a plurality of balls are arranged at the wire outlet end of the wire outlet device in a rolling mode, and the balls are distributed in the circumferential direction with the axis of the wire outlet device as the center. According to the utility model, the balls are arranged at the port of the wire outlet device, so that the contact area between the coil and the wire outlet can be reduced, the friction between the wire outlet device and the coil can be reduced, the friction loss of the coil in the winding process can be reduced, and meanwhile, the balls are exposed out of the pipe body, so that the wire outlet device is more attractive in appearance. And the phenomenon that the abrasion risk of the wire is increased due to shear stress between the wire and the edge right angle of the wire winding wall in the wire winding process can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of winding machines, specifically a winding device for coils. Background Technology

[0002] A winding machine is a device used to wind wires or cables onto a shaft. It is widely used in industries such as electronics, electrical engineering, communications, and automobiles. The wires commonly wound by winding machines are mostly inductor coils for electronic and electrical products. The surface material of the coil is usually an insulating material used to protect the coil and prevent short circuits. During the winding process, the wire outlet of the winding machine will generate shear stress with the wire, causing local shear deformation of the wire. This can lead to fatigue damage and crack propagation of the wire, damaging the insulating material on the surface of the coil, affecting the insulation performance of the coil, and causing short circuits between the coil and other components, increasing the risk of motor failure. Utility Model Content

[0003] The purpose of this invention is to provide a coil winding device to overcome the above-mentioned defects in the prior art.

[0004] According to the present invention, a coil winding device includes a worktable and a winding mechanism. The winding mechanism includes a tubular wire outlet and a driving component for driving the wire outlet to rotate. A plurality of rolling balls are circumferentially distributed around the wire outlet axis at one end of the wire outlet. The number of rolling balls is greater than two, and the wire is located between the plurality of rolling balls.

[0005] The above technical solution involves rolling balls at one end of the wire exit, which can change the friction between the coil and the wire exit port from sliding friction to rolling friction, thereby reducing the friction loss of the coil during the winding process.

[0006] The present invention is further configured such that: a plurality of hemispherical grooves are provided on the inner wall of the outlet at the end of the cable outlet, and the ball bearing is rotatably connected to the hemispherical grooves.

[0007] With the above technical solution, the ball bearings are rotatably connected within the hemispherical groove, making the ball bearings more stable during rolling motion and less prone to deviation.

[0008] The present invention is further configured such that the distance between the center of the ball and the end of the tube furthest from the outlet on the inner edge of the outlet is less than the radius of the ball.

[0009] The above technical solution allows the ball bearings to be exposed outside the tube, preventing shear stress friction between the wire and the right angle of the tube edge during the winding process, thus preventing wear.

[0010] The present invention is further configured such that: the outlet includes a ball bearing base and a ball bearing cover, the ball bearing base is fixed to the end face of the tube body, the ball bearing cover is detachably connected to the ball bearing base, and the hemispherical grooves are respectively opened in the ball bearing base and the ball bearing cover.

[0011] The above technical solution allows the ball bearing cap to be installed and removed from the ball bearing base more conveniently.

[0012] The present invention is further configured such that the minimum distance between any two adjacent balls is less than the diameter of the wire.

[0013] The above technical solution prevents the wire from shifting out of the gap between adjacent balls during the winding process, avoids direct contact between the wire and the tube body, and prevents it from experiencing increased friction.

[0014] The present invention is further configured such that: a wire retainer is provided below the outlet, and a wire wall is provided on the side of the wire retainer away from the outlet; the side of the wire retainer and the wire wall near the outlet is an arc surface with a polished surface.

[0015] Through the above technical solutions, the polishing treatment of the arc surfaces of the wire fastener and the wire guide can reduce the friction on their surfaces, making the winding process smoother.

[0016] The beneficial effects of this utility model are: installing ball bearings at the port of the wire outlet can reduce the contact area between the coil and the outlet, which helps to reduce the friction between the wire outlet and the coil and reduce the friction loss of the coil during the winding process. At the same time, the ball bearings are exposed outside the tube body, which can prevent shear stress from occurring at a right angle between the wire and the edge of the outlet wall during the winding process, thus preventing the risk of wire wear. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a utility model Figure 1 Top view;

[0019] Figure 3 This is a utility model Figure 2 A diagram of AA in the middle;

[0020] Figure 4 This is a utility model Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is a utility model Figure 1 Middle side view;

[0022] Figure 6 This is a utility model Figure 5 Enlarged view of point B in the middle;

[0023] Figure 7 This is a schematic diagram of the ball-loaded cover of this utility model.

[0024] In the diagram: 1. Workbench; 2. Drive assembly; 3. Cable outlet; 31. Hemispherical slot; 301. Tube body; 302. Cable outlet; 3021. Ball bearing base; 3022. Ball bearing cover; 4. Ball bearing; 5. Cable holder; 6. Wire wall. Detailed Implementation

[0025] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are merely simplified descriptions for the convenience of describing this utility model, and are 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. Therefore, they should not be construed as limitations on this utility model.

[0026] To make the objectives and advantages of this utility model clearer, the following detailed description of the utility model is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific implementations of the utility model and does not strictly limit the scope of protection specifically claimed by the utility model. As used herein, the terms up and down and left and right are not limited to their strict geometric definitions, but include tolerances for reasonable and inconsistent machining or human errors. The specific features of the coil winding device are described in detail below:

[0027] One embodiment of this utility model:

[0028] Reference Figures 1-7 This utility model provides a coil winding device, including a workbench 1 and a winding mechanism. The winding mechanism includes a tubular wire outlet 3 and a drive assembly 2 for driving the wire outlet 3 to rotate. The drive assembly 2 includes a winding shaft and a drive shaft. Multiple ball bearings 4 are circumferentially distributed around the axis of the wire outlet 3 at one end of the wire outlet 3. Multiple hemispherical slots 31 are formed on the inner wall of the wire outlet 302 at the end of the wire outlet 3. The ball bearings 4 are rotatably connected to... Inside the hemispherical slot 31, the outlet 302 includes a ball bearing base 3021 and a ball bearing cover 3022. The ball bearing base 3021 is fixed to the end face of the tube body 301, and the ball bearing cover 3022 is detachably connected to the ball bearing base 3021. The hemispherical slot 31 is respectively opened inside the ball bearing base 3021 and the ball bearing cover 3022. A wire fastener 5 is provided below the outlet (302), and a wire wall 6 is provided on the side of the wire fastener 5 away from the outlet 3.

[0029] according to Figure 3 , Figure 6 As shown, the drive assembly 2 includes a winding shaft and a drive shaft. The winding shaft and the drive shaft are connected by a key with transmission gears of different radii. The two gears mesh with each other to achieve the transmission of torque and motion between the gears, thereby causing the drive shaft and the winding shaft to rotate together. The end of the wire outlet 3 near 2 is fixedly connected to the end of the winding shaft. A support block is provided between the drive assembly 2 and the wire outlet 3. A through hole is opened in the support block, and the axis of the through hole coincides with the axis of the winding shaft. The wire outlet 3 passes through the through hole of the support block and rotates with it. The support block supports the wire outlet 3, making it more stable when rotating. There are more than two balls 4 arranged circumferentially at one end of the wire outlet 3. The wire is located between the balls 4. The minimum distance between any two adjacent balls 4 is less than the diameter of the wire, to prevent the wire from shifting out of the gap created by the adjacent balls during the winding process, thereby directly contacting the tube and increasing the friction it receives.

[0030] according to Figure 4 As shown, the diameter of the ball 4 is the same as that of the hemispherical groove 31. The ball 4 is rotatably connected to the hemispherical groove 31 by the ball bearing cover 3022. The inner wall surface of the hemispherical groove 31 is smooth, which helps to reduce the friction of the ball 4 in the groove. The distance from the center of the hemispherical groove 31 in the inner edge of the outlet 302 to one end of the tube 301 is less than the radius of the ball 4. This design allows the ball 4 to be exposed in the tube 301, preventing shear stress friction between the wire and the right angle of the edge of the tube 301 during the winding process, which would cause wear. The ball base 3021 and the ball bearing cover 3022 divide the hemispherical groove 31 into two parts. This segmented structure design makes it easier to install and remove the ball bearing cover 3022 onto the tube 301.

[0031] according to Figure 6 As shown, the wire holder 5 and the wire wall 6 near the outlet 302 have a polished arc surface. Polishing the surface can reduce the friction between the wire and the contact surface, making the winding process smoother.

[0032] Those skilled in the art will appreciate that various modifications to the above embodiments can be made without departing from the overall spirit and concept of this utility model. All such modifications fall within the protection scope of this utility model. The protection scheme of this utility model is defined by the appended claims.

Claims

1. A coil winding device, comprising a worktable (1) and a winding mechanism, characterized in that: The winding mechanism includes a tubular wire outlet (3) and a drive assembly (2) for driving the wire outlet (3) to rotate. One end of the wire outlet (3) is provided with multiple balls (4) circumferentially distributed around the axis of the wire outlet (3). The number of balls (4) is greater than two, and the wire is located between the multiple balls (4).

2. The coil winding device according to claim 1, characterized in that: The cable outlet (302) at the end of the cable outlet (3) has multiple hemispherical slots (31) on its inner wall, and the ball (4) is rotatably connected to the hemispherical slots (31).

3. The coil winding device according to claim 2, characterized in that: The distance between the center of the ball (4) and the end of the tube (301) away from the outlet (302) on the inner edge of the outlet (302) is less than the radius of the ball (4).

4. A coil winding device according to claim 3, characterized in that: The outlet (302) includes a ball bearing base (3021) and a ball bearing cover (3022). The ball bearing base (3021) is fixed to the end face of the tube body (301), and the ball bearing cover (3022) is detachably connected to the ball bearing base (3021). The hemispherical groove (31) is respectively opened in the ball bearing base (3021) and the ball bearing cover (3022).

5. A coil winding device according to claim 4, characterized in that: The minimum distance between any two adjacent balls (4) is less than the diameter of the wire.

6. A coil winding device according to claim 2, characterized in that: A wire fastener (5) is provided below the outlet (302). A wire wall (6) is provided on the side of the wire fastener (5) away from the outlet (3). The side of the wire fastener (5) and the wire wall (6) near the outlet (302) is an arc surface with a polished surface.

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