Semi-automatic winding device for planar induction coil

Abstract

The utility model discloses a semi-automatic winding device for a planar induction coil, and relates to the technical field of inductance coil manufacturing. The semi-automatic winding device comprises a bottom plate, a motor, a winding disc, a trapezoidal guide roller and an arc guide roller, the motor is set to a proper rotating speed through the controller, one end of the square copper pipe is fixed to the arc guide roller on the innermost side of the winding disc, then an operator steps on the pedal switch, and at the moment, the winding disc is driven by the motor to rotate at a constant speed; and meanwhile, an operator holds the non-fixed end of the square copper pipe to circumferentially wind the trapezoidal guide roller and the arc guide roller on the winding disc from inside to outside until the outermost ring of the winding disc, so that the winding of the planar induction coil is completed. The pedal switch is used for controlling the motor to drive the winding disc to start and stop rotating, operation is convenient and fast, and control is easy; the plane induction coil is formed by winding the trapezoid guide roller and the arc guide roller with the square copper pipe, the structure is stable, the forming precision is high, and abrasion and deformation are little.

Description

Technical Field

[0001] This utility model relates to the field of inductor manufacturing technology, specifically to a semi-automatic winding device for planar inductor coils. Background Technology

[0002] A planar induction coil is an inductor that uses the principle of electromagnetic induction to achieve induction heating. When current passes through the planar induction coil, the alternating magnetic field generated by the coil penetrates into the workpiece, causing eddy currents inside the workpiece and raising its temperature through heat loss. Compared with traditional induction coils, planar induction coils have a compact structure, low magnetic reluctance, and less current leakage, resulting in high energy transfer efficiency. In addition, planar coils offer better temperature control precision. Therefore, planar induction coils are often used in high-precision sensing applications. Unfortunately, planar induction coils have a diameter gradient, making them difficult to manufacture. Furthermore, to achieve high sensing accuracy, their structural shape must be as precise as possible. Therefore, developing a semi-automatic winding device for planar induction coils is essential.

[0003] Currently, the existing Chinese patent publication number CN108370097B discloses an intelligent automatic manufacturing device for a rotating planar coil antenna. After receiving a quadrilateral planar wire, the device rotates it in turn at one position while winding the planar coil. The winding process is automatic and highly automated. However, the adjacent two turns of wire are almost touching, with a small diameter gradient, which is not conducive to heat dissipation and cannot meet the working conditions of induction heating.

[0004] Currently, the existing Chinese patent publication number CN212402997U discloses a wire correction device for a winding machine used in an induction cooker coil. This device passes the wire through the first and second grooves between the first and second rollers, then fixes one end of the wire in the fixed groove inside the fixed protrusion, and then places the pressure roller on the top of the wire. The motor is started, and the fixed chuck is driven to rotate at a constant speed through the transmission disc. Under the action of the correction linkage and spring, the wire is pressed to form a coil and fixed on the coil disc. The structure is simple, but the correction accuracy is low when using springs. Moreover, if the wire is a high-strength copper coil, the correction linkage and spring may become unstable or even damaged because they cannot overcome the force when the coil is wound.

[0005] In summary, although existing coil winding devices can achieve the winding of planar induction coils to a certain extent, they still have many shortcomings. Therefore, we have developed a semi-automatic planar induction coil winding device. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the existing defects and provide a semi-automatic winding device for planar induction coils. The device starts and stops the winding disc driven by the motor through a foot switch, making it convenient and easy to control. The planar induction coil is formed by winding a trapezoidal guide roller and a circular arc guide roller with a square copper tube. The device has a stable structure, high forming accuracy, and less wear and deformation, which can effectively solve the problems in the background technology.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a semi-automatic winding device for planar induction coils, comprising a base plate, a motor, a winding disc, trapezoidal guide rollers, and arc-shaped guide rollers;

[0008] A motor support is welded to the upper end of the base plate, a motor is connected to the motor support, a controller is screwed to the outside of the motor support, a foot switch is screwed to the upper end of the base plate, and a winding disc is connected to the upper end of the motor through a coupling.

[0009] The winding disc has multiple trapezoidal guide rollers and arc guide rollers arranged in a circular array of different diameters around its center. The circumference of the winding disc is divided into 8 directions. Arc guide rollers are evenly spaced in one direction, while trapezoidal guide rollers are evenly spaced in the other 7 directions. Both trapezoidal and arc guide rollers are interference-fitted with studs. The studs of the trapezoidal and arc guide rollers are rotatably connected to the winding disc through bearings. A planar induction coil is wound around the trapezoidal and arc guide rollers above the winding disc in a direction from the inside out.

[0010] Preferably, the trapezoidal guide roller is provided with a trapezoidal annular groove adapted to the planar induction coil, and the edge of the trapezoidal annular groove is rounded. The arc guide roller has an arc annular groove.

[0011] Preferably, the inner wall of the bearing is fitted with a stud that transitions to the trapezoidal guide roller or the arc guide roller, and the outer wall of the bearing is fitted with a hole on the winding disc.

[0012] Preferably, the lower surface of the winding disc is screwed with an end cap for supporting the bearing, and the studs of the trapezoidal guide roller and the arc guide roller both pass through the bearing and the end cap, with one end of the stud extending out of the end cap being locked by a nut; the diameter of the central hole of the end cap is 1-1.5 mm larger than the diameter of the studs of the trapezoidal guide roller and the arc guide roller.

[0013] Preferably, the controller is electrically connected to the motor and the foot switch, the controller controls the speed of the motor, and the controller controls the start and stop of the motor through the foot switch.

[0014] Preferably, solidified rosin is provided inside the planar induction coil when it is wound.

[0015] Compared with existing technologies, the advantages of this invention are: the start and stop of the motor-driven winding disc rotation is controlled by a foot switch, making operation convenient and easy to control; the planar induction coil is formed by winding a trapezoidal guide roller with a square copper tube, resulting in a stable structure and high forming precision; during the winding of the planar induction coil, the diameter of the coil is gradually increased by winding a circular arc guide roller, making the transition of the planar induction coil diameter smoother and reducing wear and deformation. In summary, this winding device has the advantages of convenient operation, easy control, and high forming precision. Attached Figure Description

[0016] Figure 1 This is an isometric view of the present invention;

[0017] Figure 2 This is the front view of the present invention;

[0018] Figure 3 This is a top view of the present invention;

[0019] Figure 4 This is an isometric view of the trapezoidal guide roller, bearing, and end cap of this utility model;

[0020] Figure 5 This is an isometric view of the trapezoidal guide roller of this utility model;

[0021] Figure 6 This is an isometric view of the circular arc guide roller of this utility model.

[0022] In the diagram: 1 is the base plate, 2 is the motor support, 3 is the motor, 4 is the controller, 5 is the foot switch, 6 is the winding disc, 7 is the trapezoidal guide roller, 8 is the arc guide roller, 9 is the bearing, 10 is the end cover, and 11 is the planar induction coil. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-6 This utility model provides a technical solution: a semi-automatic winding device for planar induction coils, including a base plate 1, a motor 3, a winding disc 6, a trapezoidal guide roller 7, and an arc guide roller 8;

[0025] A motor support 2 is welded to the upper end of the base plate 1. A motor 3 is connected to the motor support 2. A controller 4 is screwed to the outside of the motor support 2. A foot switch 5 is screwed to the upper end of the base plate 1. A winding disc 6 is connected to the upper end of the motor 3 through a coupling.

[0026] Multiple trapezoidal guide rollers 7 and arc guide rollers 8 are arranged in a circular array with different diameters around the center of the winding disk 6. The circumference of the winding disk 6 is divided into 8 directions. Arc guide rollers 8 are evenly spaced in one direction, and trapezoidal guide rollers 7 are evenly spaced in the other 7 directions. Both trapezoidal guide rollers 7 and arc guide rollers 8 are interference-fitted with studs. The studs of trapezoidal guide rollers 7 and arc guide rollers 8 are rotatably connected to the winding disk 6 through bearings 9. A planar induction coil 11 is wound around the trapezoidal guide rollers 7 and arc guide rollers 8 above the winding disk 6 in a direction from the inside to the outside.

[0027] It is understandable that motor 3 drives the winding disc 6 to rotate, and the winding disc 6 drives the trapezoidal guide roller 7 and the arc guide roller 8 on it to rotate around the center of the winding disc 6, so as to realize the winding of the square copper tube. The specific winding steps are as follows: the square copper tube is wound around the innermost arc guide roller 8 of the winding disc 6. The operator holds the end with one hand, while the operator holds the square copper tube with the other hand and bends it. The winding disc 6 rotates and then winds around the innermost trapezoidal guide roller 7 once. Then it winds around the next innermost arc guide roller 8 and then winds around the next innermost trapezoidal guide roller 7 once. In this way, the diameter of the coil is gradually increased, and the winding of the planar induction coil is completed. Semi-automatic winding is achieved. The structure is simple and easy to implement.

[0028] Furthermore, the trapezoidal guide roller 7 is provided with a trapezoidal annular groove adapted to the planar induction coil 11, and the edge of the trapezoidal annular groove is rounded. The arc guide roller 8 has an arc annular groove; this ensures a smoother transition in the diameter of the planar induction coil 11 and can effectively reduce wear and deformation.

[0029] Furthermore, the inner wall of the bearing 9 is transitionally fitted with the stud of the trapezoidal guide roller 7 or the arc guide roller 8, and the outer wall of the bearing 9 is transitionally fitted with the hole on the winding disc 6. The trapezoidal guide roller 7 or the arc guide roller 8 is rotatably connected to the winding disc 6 through the bearing 9, that is, the trapezoidal guide roller 7 or the arc guide roller 8 can both rotate on its own axis and rotate around the center of the winding disc 6.

[0030] Furthermore, an end cap 10 for supporting the bearing 9 is screwed onto the lower surface of the winding disc 6. The studs of the trapezoidal guide roller 7 and the arc guide roller 8 both pass through the bearing 9 and the end cap 10. One end of the stud extending out of the end cap 10 is locked by a nut. The end cap 10 supports the bearing 9, as well as the trapezoidal guide roller 7 and the arc guide roller 8. The diameter of the central hole of the end cap 10 is 1-1.5 mm larger than the diameter of the studs of the trapezoidal guide roller 7 and the arc guide roller 8.

[0031] Furthermore, the controller 4 is electrically connected to the motor 3 and the foot switch 5. The controller 4 controls the speed of the motor 3 and controls the start and stop of the motor 3 through the foot switch 5. The controller 4 also controls the start and stop of the winding disc 6 driven by the motor 3 through the foot switch 5. The control method is existing technology, which is convenient and easy to operate.

[0032] In addition, solidified rosin is provided inside the planar induction coil 11 during the winding process to protect the planar induction coil 11 and reduce deformation.

[0033] Working principle: When in use, the controller 4 sets the motor 3 to a suitable speed, fixes one end of the square copper tube on the innermost arc guide roller 8 of the winding disc 6, and then the operator steps on the foot switch 5. At this time, the winding disc 6 rotates at a constant speed under the drive of the motor 3. At the same time, the operator holds the non-fixed end of the square copper tube and winds the trapezoidal guide roller 7 and the arc guide roller 8 on the winding disc 6 from the inside to the outside until the outermost circle of the winding disc 6, thereby completing the winding of the planar induction coil 11.

[0034] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A planar inductive coil semi-automatic winding device, characterized by: It comprises a base plate (1), a motor (3), a winding disc (6), trapezoidal guide rollers (7) and arc guide rollers (8). The upper end of the base plate (1) is welded with a motor support (2), the motor support (2) is connected with the motor (3), the outer part of the motor support (2) is screwed with a controller (4), the upper end of the base plate (1) is screwed with a foot switch (5), the upper end of the motor (3) is connected with the winding disc (6) through a coupling. The winding disc (6) is arranged with a plurality of trapezoidal guide rollers (7) and arc guide rollers (8) on its circumference with different diameters, the circumference of the winding disc (6) is evenly divided into 8 directions, the arc guide rollers (8) are arranged at equal intervals in one direction, the trapezoidal guide rollers (7) are arranged at equal intervals in the other 7 directions, the trapezoidal guide rollers (7) and the arc guide rollers (8) are all provided with studs in interference fit, the studs of the trapezoidal guide rollers (7) and the arc guide rollers (8) are all rotatably connected with the winding disc (6) through bearings (9), and the planar induction coils (11) are wound around the trapezoidal guide rollers (7) and the arc guide rollers (8) from inside to outside above the winding disc (6).

2. A planar inductive coil semi-automatic winding device according to claim 1, characterized in that: The trapezoidal guide rollers (7) are provided with trapezoidal ring grooves matched with the planar induction coils (11), the edges of the trapezoidal ring grooves are chamfered, and the arc guide rollers (8) are provided with arc ring grooves.

3. The planar inductive coil semi-automatic winding device according to claim 1, characterized in that: The inner wall of the bearing (9) is in transition fit with the stud of the trapezoidal guide roller (7) or the arc guide roller (8), and the outer wall of the bearing (9) is in transition fit with the hole on the winding disc (6).

4. The planar inductive coil semi-automatic winding device according to claim 1, characterized in that: The lower surface of the winding disc (6) is screwed with an end cover (10) for supporting the bearing (9), the studs of the trapezoidal guide rollers (7) and the arc guide rollers (8) all penetrate through the bearing (9) and the end cover (10), and the end of the stud extending out of the end cover (10) is locked by a nut; the central hole of the end cover (10) is 1-1.5 mm larger in diameter than the diameter of the stud of the trapezoidal guide roller (7) or the arc guide roller (8).

5. The planar inductive coil semi-automatic winding device according to claim 1, characterized in that: The controller (4) is electrically connected with the motor (3) and the foot switch (5), the controller (4) controls the rotating speed of the motor (3), and the controller (4) controls the start and stop of the motor (3) through the foot switch (5).

6. The planar inductive coil semi-automatic winding device according to claim 1, characterized in that: When the planar induction coil (11) is wound, the planar induction coil (11) is provided with solidified rosin.

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