A spinning ring set

Abstract

The utility model discloses a spinning ring group, including spinning ring, inner support and a plurality of steel ball. Inner support sets up in the spinning ring, and the inner support top is provided with inner support inlet pipe hole, and the inner support bottom is provided with inner support outlet pipe hole, and the inner support side is provided with a plurality of steel ball containing hole, and the steel ball sets up in the steel ball containing hole. The inner end of steel ball containing hole is provided with inner support limiting lug, and the inner wall of spinning ring is matched with inner support limiting lug, so that the steel ball is positioned between the inner wall of inner support and spinning ring. Through setting up inner support, so as to be positioned stably in the spinning ring with less steel ball.

Description

Technical Field

[0001] This utility model relates to the field of internal thread forming of copper tubes, and in particular to a spinning ring assembly. Background Technology

[0002] Internally threaded copper tubes are a type of high-efficiency heat transfer tube, with a heat exchange efficiency far exceeding that of smooth-walled tubes. The forming process of internal threads generally includes three types: floating mandrel drawing, spinning forming, and fixed-sizing air drawing. In the spinning forming of internal threads, the copper tube moves forward at a uniform speed under the action of tension, while a high-speed rotating ball roller presses the outer surface of the copper tube. The threaded mandrel connected to the floating mandrel inside the copper tube rotates automatically, causing the copper tube to be in a high-speed oblique rolling state. The grooves on the threaded mandrel make the inner wall of the copper tube toothed, forming an internally threaded copper tube.

[0003] For details, please refer to patent 2012100812043. The spinning ring assembly mainly consists of a first spinning ring on both sides, a second spinning ring, and a steel ball assembly in the middle. In existing designs, the steel ball assembly in the middle is often required to fill the space between the first and second spinning rings. However, in actual use, in order to achieve a higher tooth height and a better spinning effect, a smaller number of steel balls and a larger steel ball diameter are required within the same radius. This is not practical for traditional spinning ring assemblies. Therefore, a spinning ring assembly with a simple structure, higher tooth height, higher forming rate, and better forming effect is needed. Utility Model Content

[0004] The main purpose of this utility model is to provide a spinning ring assembly that has a simple structure, can achieve higher tooth height, higher forming rate and better forming effect.

[0005] This utility model proposes a spinning ring assembly, including a spinning ring, an inner support, and multiple steel balls;

[0006] The inner support is disposed inside the spinning ring. The top of the inner support is provided with an inner support inlet hole, the bottom of the inner support is provided with an inner support outlet hole, and the side of the support is provided with a plurality of steel ball receiving holes, and the steel balls are disposed in the steel ball receiving holes.

[0007] An inner support limiting protrusion is provided at the end of the steel ball receiving hole. The steel ball is limited between the inner support and the inner wall of the spinning ring by the inner support limiting protrusion cooperating with the inner wall of the spinning ring.

[0008] By providing the inner support, a smaller number of steel balls can be stably positioned within the spinning ring.

[0009] Preferably, the spinning ring includes a first spinning ring and a second spinning ring, and the inner support is positioned between the first spinning ring and the second spinning ring.

[0010] Preferably, the inner support limiting protrusion extends inward around the outlet hole of the inner support to form an inner support limiting protrusion with an outer edge that is a regular polygon.

[0011] The beneficial effects of this invention's spinning ring assembly are as follows:

[0012] 1. By using an internal support, a relatively smaller number of steel balls can be placed inside the spinning ring, which normally requires each steel ball to be close to each other. This results in a larger gap between the steel balls and allows for a higher tooth height.

[0013] 2. Compared to conventional spinning ring assemblies, only an inner support is added inside the spinning ring, without replacing the entire spinning device. It can even be adapted to existing spinning devices, thus enabling more spinning solutions and better spinning effects at the lowest cost.

[0014] 3. It can also accommodate steel balls with larger radii within a spinning ring assembly of the same radius, thus achieving design requirements that were previously impossible. Attached Figure Description

[0015] Fig. 1 This is a top view of the spinning ring assembly of this utility model;

[0016] Fig. 2 This is a schematic diagram of the internal structure of the spinning ring assembly of this utility model;

[0017] Fig. 3 This is a front view of the inner support of the spinning ring assembly of this utility model;

[0018] Fig. 4 This is a cross-sectional view of the inner support of the spinning ring assembly of this utility model;

[0019] The following are the labels in the diagram: 1. Spinning ring, 2. Inner support, 3. Steel ball, 11. First spinning ring, 12. Second spinning ring, 21. Inner support inlet hole, 22. Inner support outlet hole, 23. Inner support limiting protrusion, 24. Steel ball receiving hole.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0022] Reference Figs. 1 to 4 An embodiment of the spinning ring assembly of this utility model is presented:

[0023] A spinning ring assembly includes a spinning ring 1, an inner support 2, and four steel balls 3.

[0024] The spinning ring 1 includes a first spinning ring 11 and a second spinning ring 12, with an inner support 2 positioned between the first spinning ring 11 and the second spinning ring 12. The first spinning ring 11 and the second spinning ring 12 are respectively provided with a first spinning ring through hole and a second spinning ring through hole.

[0025] The inner support 2 has an inner support inlet hole 21 at the top and an inner support outlet hole 22 at the bottom. The inner support 2 has four steel ball receiving holes 24 arranged at equal angles on its side. The inner support outlet hole 22 extends inward to form an inner support limiting protrusion 23 with a regular polygonal outer edge, so that each outer end face of the inner support limiting protrusion 23 is exactly blocked on the end of each steel ball receiving hole 24.

[0026] The steel ball 3 is placed inside the steel ball receiving hole 24. The inner support limiting protrusion 23 cooperates with the inner wall of the spinning ring 1, thereby limiting the steel ball 3 between the inner support 2 and the inner wall of the spinning ring 1. By setting the inner support 2, a smaller number of steel balls 3 can be stably limited and placed inside the spinning ring 1.

[0027] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A spinning ring assembly, characterized in that, Includes a spinning ring, an inner support, and multiple steel balls; The inner support is disposed inside the spinning ring. The top of the inner support is provided with an inner support inlet hole, the bottom of the inner support is provided with an inner support outlet hole, and the side of the support is provided with a plurality of steel ball receiving holes, and the steel balls are disposed in the steel ball receiving holes. An inner support limiting protrusion is provided at the end of the steel ball receiving hole. The steel ball is limited between the inner support and the inner wall of the spinning ring by the inner support limiting protrusion cooperating with the inner wall of the spinning ring. By providing the inner support, a smaller number of steel balls can be stably positioned within the spinning ring.

2. The spun ring assembly according to claim 1, characterized in that, The spinning ring includes a first spinning ring and a second spinning ring, and the inner support is positioned between the first spinning ring and the second spinning ring.

3. The spun ring assembly according to claim 1, characterized in that, The inner support extends inward around the outlet hole to form a limiting protrusion of the inner support with an outer polygonal edge.

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