A winding drive mechanism for square transformer coils

Abstract

The utility model provides a kind of winding transmission mechanism of square transformer coil, it is related to winding machine technical field, mainly for solving the problem that tension fluctuation can appear when square transformer coil winding.This winding transmission mechanism is mainly composed of winding shaft, circular driving pulley, square driven pulley, synchronous belt and tensioning component;One end of winding shaft is equipped with square column for connecting square transformer coil framework, other end is connected with square driven pulley, wherein, square column is 45 ° with square driven pulley staggered;Circular driving pulley is connected with square driven pulley by synchronous belt, and tensioning component is used for tensioning synchronous belt.The utility model can make square driven pulley produce periodic rotation of nonuniform speed, and the periodic rotation can effectively offset tension fluctuation caused by coil framework winding radius periodic change, so that enameled wire can be wound on coil framework with relatively constant speed, improve winding quality, reduce the influence of tension fluctuation on wire arranging mechanism.

Description

Technical Field

[0001] This utility model specifically relates to a winding transmission mechanism for a square transformer coil, and pertains to the field of winding machine technology. Background Technology

[0002] See attached document Figure 1 Existing transformers typically use a square coil frame 11. During winding, the coil frame 11 rotates with the winding shaft, causing the winding radius of the enameled wire 12 on the coil frame 11 to change periodically. This periodic change causes fluctuations in winding tension, which not only affects the winding quality of the enameled wire 12 on the coil frame 11, resulting in uneven winding tightness, but also adversely affects the operation of the wire laying mechanism. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model discloses a winding transmission mechanism for a square transformer coil, adopting the following technical solution: A winding transmission mechanism for a square transformer coil mainly consists of a winding shaft, a circular driving pulley, a square driven pulley, a synchronous belt, and a tensioning assembly. One end of the winding shaft is provided with a square post for connecting the square transformer coil frame, and the other end is connected to the square driven pulley, wherein the square post and the square driven pulley are offset by 45°. The circular driving pulley is connected to the square driven pulley through the synchronous belt, and the tensioning assembly is used to tension the synchronous belt.

[0004] Further improvement to the technical solution: The tensioning assembly consists of a base, a spring and a tensioning wheel, and the tensioning wheel can slide elastically relative to the base.

[0005] Further improved technical solution: The synchronous belt has semi-circular belt teeth; rounded corners are provided on the four edges of the square driven pulley, and belt grooves matching the belt teeth are evenly distributed along the circumference of the square driven pulley.

[0006] Further improve the technical solution: the diameter of the circular driving pulley is smaller than the side length of the square driven pulley.

[0007] Further improve the technical solution: the side length of the square driven pulley is 0.8-1.2 times the side length of the coil frame.

[0008] After implementing the above technical solution, the beneficial effects of this utility model compared to the prior art are: This invention enables the square driven pulley to rotate periodically with uneven speed. This periodic rotation can effectively counteract the tension fluctuations caused by the periodic changes in the winding radius of the coil bobbin, allowing the enameled wire to be wound on the coil bobbin at a relatively constant speed. This not only improves the winding quality but also reduces the impact of tension fluctuations on the winding mechanism. Attached Figure Description

[0009] Appendix Figure 1 The diagram shown is a structural schematic of a square transformer coil.

[0010] Appendix Figure 2 The diagram shown is a structural schematic of this wound-wire transmission mechanism from one perspective.

[0011] Appendix Figure 3 The diagram shown is a structural schematic of this wound-rotor mechanism from another perspective.

[0012] Appendix Figure 4-5 The diagram shown illustrates the working principle of this winding transmission mechanism.

[0013] In the attached diagram: 1. Transformer coil; 11. Coil frame; 12. Enamelled wire; 2. Winding shaft; 21. Square column; 22. Side flange; 23. Shaft; 3. Square driven pulley; 4. Circular driving pulley; 5. Synchronous belt; 6. Tensioning assembly; 61. Base; 62. Spring; 63. Tensioning wheel. Detailed Implementation

[0014] The preferred embodiments of this utility model are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of this utility model and are not intended to limit the scope of protection of this utility model. It should be noted that in the description of this utility model, terms such as "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation and positional relationship, and therefore should not be construed as a limitation of this utility model. It should also be noted that in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0015] A winding drive mechanism for a square transformer coil, relating to the field of winding machines, is mainly used to solve the problem of tension fluctuations that occur when winding square transformer coils. The composition and working principle of this winding drive mechanism are described in detail below.

[0016] See attached document Figure 2 and attached Figure 3This winding transmission mechanism mainly consists of a winding shaft 2, a circular driving pulley 4, a square driven pulley 3, a synchronous belt 5, and a tensioning assembly 6. One end of the winding shaft 2 is equipped with a square post 21 for connecting the coil frame 11, and the other end is connected to the square driven pulley 3, wherein the square post 21 and the square driven pulley 3 are offset by 45°. The circular driving pulley 4 is connected to the square driven pulley 3 via the synchronous belt 5, and when the circular driving pulley 4 rotates, it drives the square driven pulley 3 to rotate via the synchronous belt 5.

[0017] In this embodiment, the winding shaft 2 has a shaft body 23 and a flange 22. The flange 22 is located on one side of the square post 21 and is used to mount the coil bobbin 11. The shaft body 23 is supported and rotated by a bearing (not shown in the figure), and the outer end of the shaft body 23 is connected to the square driven pulley 3.

[0018] A special transmission mechanism is constituted by a circular driving pulley 4, a square driven pulley 3, a tensioning assembly 6, and a synchronous belt 5. The synchronous belt 5 is a common round-tooth synchronous belt, with semi-circular teeth evenly distributed along its circumference. The circular driving pulley 4 is also a common synchronous belt pulley, with semi-circular grooves evenly distributed along its circumference on a circular base, the pitch between the grooves being equal to the pitch of the synchronous belt 5. The difference is that the square driven pulley 3 has a square base with rounded corners on its four edges, and semi-circular grooves evenly distributed along its circumference, the pitch between the grooves being equal to the pitch of the synchronous belt 5. To achieve a speed reduction effect, the diameter of the circular driving pulley 4 is smaller than the side length of the square driven pulley 3.

[0019] The tensioning assembly 6 mainly consists of a base 61, a spring 62, and a tensioning wheel 63, and is used to tension the synchronous belt 5. The base 61 is fixed, and the tensioning wheel 63 is pressed against the synchronous belt 5 under the action of the spring 62, and the synchronous belt 5 is tensioned by elastic sliding.

[0020] During operation, the circular driving pulley 4 drives the square driven pulley 3 to rotate clockwise via the synchronous belt 5. Since the base of the circular driving pulley 4 is circular and the base of the square driven pulley 3 is square, the synchronous belt 5 moves at a constant speed, while the rotation of the square driven pulley 3 is uneven.

[0021] See attached document Figure 4 Since the square post 21 is offset by 45° from the square driven pulley 3, when the synchronous belt 5 encircles the two sides of the square driven pulley 3, the rotational speed of the square driven pulley 3 and the winding shaft 2 decreases from the highest to the lowest. At this time, the winding surface of the coil frame 11 is in a horizontal state, and the winding radius becomes the smallest, so that the enameled wire 12 can be wound on the coil frame 11 at a relatively constant speed.

[0022] See attached document Figure 5When the synchronous belt 5 envelops the three sides of the square driven pulley 3, the rotational speed of the square driven pulley 3 and the winding shaft 2 increases from the lowest to the highest. At this time, the winding surface of the coil frame 11 is in a 45° inclined state, and the winding radius becomes the largest, so that the enameled wire 12 can still be wound on the coil frame 11 at a relatively constant speed, ensuring that the winding has a relatively consistent tightness.

[0023] From the appendix Figure 4 and attached Figure 5 It can be seen that the uneven rotation of the square driven pulley 3 can largely counteract the tension fluctuations caused by the periodic changes in the winding radius of the coil bobbin 11, thus improving the winding quality. The closer the side length of the square driven pulley 3 is to the radius of the coil bobbin winding, the better the effect of eliminating tension fluctuations. However, as winding progresses, the winding diameter of the enameled wire 12 on the coil bobbin 11 increases, and the effect of eliminating tension fluctuations deteriorates. To maximize the effect of eliminating tension fluctuations, the side length of the square driven pulley 3 is 0.8-1.2 times the side length of the coil bobbin 11.

[0024] It is worth noting that the content not described in detail in the above embodiments is prior art. It is also worth noting that any additions, subtractions, substitutions, and improvements made by those skilled in the art based on the structure and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A winding drive mechanism for a square transformer coil, characterized in that: It mainly consists of a winding shaft, a circular driving pulley, a square driven pulley, a synchronous belt, and a tensioning assembly. One end of the winding shaft is provided with a square post for connecting the square transformer coil frame, and the other end is connected to the square driven pulley. The square post and the square driven pulley are offset by 45°. The circular driving pulley is connected to the square driven pulley through the synchronous belt, and the tensioning assembly is used to tension the synchronous belt.

2. The winding transmission mechanism for a square transformer coil as described in claim 1, characterized in that: The tensioning assembly consists of a base, a spring, and a tensioning wheel, with the tensioning wheel being elastically slidable relative to the base.

3. The winding transmission mechanism for a square transformer coil as described in claim 1, characterized in that: The synchronous belt has semi-circular teeth; rounded corners are provided on the four edges of the square driven pulley, and grooves matching the teeth are evenly distributed along the circumference of the square driven pulley.

4. The winding transmission mechanism for a square transformer coil as described in claim 1, characterized in that: The diameter of the circular driving pulley is smaller than the side length of the square driven pulley.

5. The winding transmission mechanism for a square transformer coil as described in claim 1, characterized in that: The side length of the square driven pulley is 0.8-1.2 times the side length of the coil frame.

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