Efficient heat exchange tube production equipment and production process thereof

Abstract

The invention discloses efficient heat exchange tube production equipment and a production process thereof.The outer wall of a heat exchange tube is provided with a first spiral groove and a second spiral groove which are arranged in a staggered mode, a rhombic fin is formed between the first spiral groove and the second spiral groove, the production equipment comprises a machine tool, a headstock and a tailstock, and the headstock is provided with a rotary clamping jaw; a through hole allowing a heat exchange tube to penetrate through is formed in the tailstock, a rotatable bearing shaft and two spinning heads are arranged around the circumferential direction of the through hole at intervals, a plurality of spiral embossing is arranged on the side wall of each spinning head, the spiral embossing spirally extends along the side wall of the spinning head, and a plurality of spiral grooves are formed in the side wall of each spinning head. The multiple spiral embossments are sequentially arranged on the side wall of the spinning head in the axial direction of the spinning head. And the spiral directions of the spiral embossing on the two spinning heads are opposite. Synchronous machining of the first spiral groove and the second spiral groove is achieved through the spinning head so that the rhombic fin can be formed at a time, the machining steps are simplified, and the production efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of milling processing, and in particular to an efficient production equipment and production process of heat exchange tubes. Background Art

[0002] The invention patent application document with publication number CN106642829A discloses an evaporating tube for an absorption unit, wherein fins are arranged along a spiral line on the outer surface of the tube body; the fins form a certain angle with the axis; the axis is the central axis of the tube body; the fins are in the shape of a cube, a cuboid, a trapezoid or a rhombus. To prepare the above-mentioned evaporating tube for the absorption unit, the preparation method is to first use a special mold to process a continuous fin with a certain angle with the axis, and then use another reverse roller to roll and cut the whole fin to form an independent fin. At least two processes are required during production, which has low production efficiency and affects production efficiency. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an efficient production equipment for heat exchange tubes, and the technical solution adopted includes:

[0004] A highly efficient production equipment for heat exchange tubes, wherein the outer wall of the heat exchange tube is provided with a plurality of first spiral grooves and a plurality of second spiral grooves, the first spiral grooves and the second spiral grooves are both spirally distributed along the outer wall of the tube body, the plurality of first spiral grooves and the plurality of second spiral grooves are respectively sequentially distributed along the axial direction of the tube body, the spiral directions of the first spiral grooves and the second spiral grooves are opposite and staggered to form a diamond fin between the first spiral grooves and the second spiral grooves,

[0005] The production equipment includes a machine tool, a headstock and a tailstock, wherein the headstock is provided with a rotating clamp; the tailstock is provided with a through hole for the heat exchange tube to pass through, and a rotatable supporting shaft and two spinning heads are arranged at intervals around the through hole in the circumferential direction, and a plurality of spiral embossings are provided on the side wall of the spinning head, and the spiral embossings extend in a spiral shape along the side wall of the spinning head, and the plurality of spiral embossings are sequentially arranged on the side wall of the spinning head along its axial direction;

[0006] The spiral directions of the spiral embossings on the two spinning heads are opposite.

[0007] A technical solution adopted by an embodiment of the present invention to solve its technical problem is: the supporting shaft and the two spinning heads are evenly distributed around the periphery of the through hole.

[0008] A technical solution adopted by an embodiment of the present invention to solve its technical problem is: the supporting shaft is arranged above the through hole, and the two spinning heads are distributed on both sides of the through hole.

[0009] Based on the above-mentioned efficient heat exchange tube production equipment, the present application also proposes a production process of efficient heat exchange tube production equipment, including:

[0010] Step 1: Clamp one end of the heat exchange tube by the rotating clamp on the headstock, so that one end of the heat exchange tube is close to the supporting shaft and between the two spinning heads;

[0011] Step 2: The headstock box drives the heat exchange tube to rotate by rotating the jaws. The headstock box drives the rotating heat exchange tube to move toward the tail end of the machine tool by rotating the jaws. The workpiece rotates at a low speed to realize circumferential feed motion. The driving mechanism drives the two spinning heads to rotate in the same direction. The supporting shaft rotates synchronously with the heat exchange tube, and the rotation speeds of the heat exchange tube, the spinning head and the supporting shaft are consistent, so that the spinning head spins the outer wall of the heat exchange tube to form diamond fins.

[0012] Beneficial effects of the present invention:

[0013] In the present application, the first spiral groove and the second spiral groove are processed synchronously by a spinning head so that the diamond-shaped fin is formed in one step, which simplifies the processing steps and is conducive to improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0015] Figure 1 This is a schematic diagram of the structure of the heat exchange tube described in this application;

[0016] Figure 2 This is a schematic diagram of the structure of the production equipment for the heat exchange tubes described in this application;

[0017] Figure 3 This is a schematic diagram of the structure of the spinning head and the supporting shaft described in this application;

[0018] Figure 4 for Figure 3 Enlarged view of point A in the middle. DETAILED DESCRIPTION

[0019] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0020] In the description of the present invention, the meaning of "above", "below", "exceed", etc. is not inclusive of the number itself, and the meaning of "above", "below", "within", etc. is inclusive of the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0021] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0023] Reference Figure 1 The figure shows a schematic structural diagram of the heat exchange tube 10 described in the present embodiment. The outer wall of the heat exchange tube 10 is provided with a plurality of first spiral grooves 11 and a plurality of second spiral grooves 12. The first spiral grooves 11 and the second spiral grooves 12 are both distributed in a spiral shape along the outer wall of the tube body. The plurality of first spiral grooves 11 and the plurality of second spiral grooves 12 are respectively distributed in sequence along the axial direction of the tube body. The spiral directions of the first spiral grooves 11 and the second spiral grooves 12 are opposite and interlaced with each other to form diamond fins 13 between the first spiral grooves 11 and the second spiral grooves 12. The diamond fins 13 can increase the heat exchange area between the heat exchange tube 10 and the working medium, and improve the heat exchange efficiency of the heat exchange tube 10.

[0024] Based on the above heat exchange tube 10, this embodiment proposes a production device for the above heat exchange tube, and the technical solutions adopted include:

[0025] The machine tool 20 and the headstock 30 and the tailstock 40 are arranged on the machine tool 20, the headstock 30 is provided with a rotating clamp 31; the tailstock 40 is provided with a through hole for the heat exchange tube 10 to pass through, and a rotatable spinning head 50 and a supporting shaft 60 are arranged circumferentially around the through hole, and a plurality of first spiral embossings 51 are provided on the side wall of the spinning head 50, and the first spiral embossings 51 extend in a spiral shape along the side wall of the spinning head 50, and the plurality of first spiral embossings 51 are sequentially arranged on the side wall of the spinning head 50 along its axial direction;

[0026] A plurality of second spiral embossings are provided on the side wall of the spinning head 50, and the second spiral embossings extend in a spiral shape along the side wall of the spinning head 50. The plurality of second spiral embossings are arranged in sequence along the axial direction of the side wall of the spinning head 50; and the spiral directions of the first spiral embossing 51 and the second spiral embossing are opposite.

[0027] The machine tool 20 is provided with a sliding mechanism, and the headstock 30 is installed on the sliding mechanism. The sliding mechanism can drive the headstock 30 to drive the heat exchange tube 10 clamped therein to move toward the tail end of the machine tool 20. In this embodiment, the tail end of the machine tool 20 is provided with a driving mechanism for rotating the spinning head 50 and the spinning head 50. The driving mechanism drives the spinning head 50 and the spinning head 50 to rotate synchronously to perform spinning processing on the heat exchange tube 10.

[0028] See attached Figure 2 As shown, when the heat exchange tube 10 is processed, the headstock 30 and the sliding mechanism realize the circumferential feeding of the heat exchange tube 10. When the heat exchange tube 10 is fed circumferentially, the plurality of first spiral embossings 51 and the second spiral embossings rotate synchronously with the heat exchange tube 10, so as to simultaneously cut and form a plurality of first spiral grooves 11 and a plurality of second spiral grooves 12 on the surface of the heat exchange tube 10, thereby forming diamond-shaped fins 13 between the plurality of first spiral grooves 11 and the plurality of second spiral grooves 12.

[0029] In the present application, the first spiral groove 11 is formed by a spinning head 50 and the diamond-shaped fin 13 is formed in one step by synchronous processing, which simplifies the processing steps and is conducive to improving production efficiency.

[0030] In the present application, in addition to the spinning head 50 for processing the spiral groove on the outer wall of the heat exchange tube 10, a supporting shaft 60 is also provided. The supporting shaft 60 rotates synchronously with the heat exchange tube 10 during the feeding process of the heat exchange tube 10. During the spinning process of the heat exchange tube 10, the supporting shaft 60 supports the heat exchange tube to ensure the spinning effect.

[0031] In the present application, the spinning heads 50 and the supporting shafts 60 are evenly spaced around the periphery of the through hole to stably clamp the heat exchange tube 10 between the three to ensure the spinning effect. In this embodiment, the supporting shaft 60 is arranged above the through hole, and the spinning heads 50 are distributed on both sides of the through hole.

[0032] Based on the above content, the present application also proposes a production process based on the above-mentioned efficient heat exchange tube production equipment, including:

[0033] Step 1: Clamp one end of the heat exchange tube 10 by the rotating clamp 31 on the headstock 30, so that the one end of the heat exchange tube 10 is close to between the spinning head 50 and the supporting shaft 60;

[0034] Step 2, the headstock box 30 drives the heat exchange tube 10 to rotate by rotating the clamp 31. The headstock box 30 drives the rotating heat exchange tube 10 to move toward the tail end of the machine tool 20 by rotating the clamp 31. The workpiece rotates at a low speed to realize circumferential feeding motion. The driving mechanism drives the two spinning heads 50 to rotate in the same direction. The supporting shaft 60 rotates synchronously with the heat exchange tube 10, and the rotation speeds of the heat exchange tube 10, the spinning head 50 and the supporting shaft 60 are consistent, so that the spinning head 50 spins the outer wall of the heat exchange tube 10 to form a diamond fin 13.

[0035] Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. An efficient heat exchange tube production equipment, characterized in that: The outer wall of the heat exchange tube (10) is provided with a plurality of first spiral grooves (11) and a plurality of second spiral grooves (12), the first spiral grooves (11) and the second spiral grooves (12) are both distributed in a spiral shape along the outer wall of the tube body, the plurality of first spiral grooves (11) and the plurality of second spiral grooves (12) are respectively distributed in sequence along the axial direction of the tube body, the spiral directions of the first spiral grooves (11) and the second spiral grooves (12) are opposite and intertwined to form a diamond fin (13) between the first spiral grooves (11) and the second spiral grooves (12), and the production equipment comprises a machine tool (20), a headstock (30) and a tailstock (40) The headstock (30) is provided with a rotating clamp (31); the tailstock (40) is provided with a through hole for the heat exchange tube (10) to pass through, and a rotatable supporting shaft (60) and two spinning heads (50) are arranged at intervals around the through hole in the circumferential direction; a plurality of spiral embossings (51) are provided on the side wall of the spinning head (50), and the spiral embossings (51) extend in a spiral shape along the side wall of the spinning head (50); and the plurality of spiral embossings (51) are arranged in sequence on the side wall of the spinning head (50) along its axial direction; and the spiral directions of the spiral embossings (51) on the two spinning heads (50) are opposite.

2. The efficient heat exchange tube production equipment according to claim 1, characterized in that: The supporting shaft (60) and the two spinning heads (50) are evenly distributed at intervals around the periphery of the through hole.

3. The efficient heat exchange tube production equipment according to claim 2, characterized in that: The supporting shaft (60) is arranged above the through hole, and the two spinning heads (50) are distributed on both sides of the through hole.

4. A production process for the efficient heat exchange tube production equipment according to any one of claims 1 to 3, characterized in that: include: Step 1: Clamp one end of the heat exchange tube (10) by means of the rotating clamp (31) on the headstock (30), so that the one end of the heat exchange tube (10) is close to the support shaft (60) and between the two spinning heads (50); Step 2, the headstock (30) drives the heat exchange tube (10) to rotate by rotating the clamp (31), and the headstock (30) drives the rotating heat exchange tube (10) to move toward the tail end of the machine tool (20) by rotating the clamp (31), and the workpiece rotates at a low speed to realize circumferential feeding motion. The driving mechanism drives the two spinning heads (50) to rotate in the same direction, and the supporting shaft (60) rotates synchronously with the heat exchange tube (10), and the rotation speeds of the heat exchange tube (10), the spinning head (50) and the supporting shaft (60) are consistent, so that the spinning head (50) spins the outer wall of the heat exchange tube (10) to form diamond fins (13).

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