Apparatus for cutting and expanding differential-bore capillary tube-integrated pipe

Abstract

The present invention relates to an apparatus for cutting and expanding a differential-bore capillary tube-integrated pipe, the apparatus that prevents a cutting portion from being damaged when cutting, to a predetermined length, differential-bore capillary and suction pipes, which are differential-bore capillary and suction pipes integrally formed and extrusion-molded into one capillary tube-integrated type by accommodating and extruding aluminum billets in an extrusion mold, and, simultaneously, enables both ends of the differential-bore capillary tube-integrated pipe to be expanded to a predetermined size in order to connect and couple, to a counterpart, the differential-bore capillary tube-integrated pipe cut to a predetermined length, such that the capillary tube-integrated pipe can be coupled or fixed without corrosion or leakage of a coupled portion and cooling efficiency is increased.

Description

Cutting expansion device for capillary integral pipes with different inner diameters

[0001] The present invention relates to a cutting and expanding device for a capillary integral pipe having different inner diameters, which accommodates a capillary pipe and a suction pipe, that is, an aluminum billet, inside and extrudes them through an extrusion mold, thereby forming a capillary and a suction pipe having different inner diameters integrally and cutting them to a predetermined length in a state of extrusion molding them into a single capillary integral pipe, thereby preventing damage to the cut portion and, at the same time, enabling both ends of the capillary integral pipe having different inner diameters to be expanded to a predetermined size in order to connect or fix the cut capillary integral pipe having different inner diameters of a predetermined length to a counterpart, thereby enabling the joining or fixing of the joining portion without corrosion or leakage, and thereby increasing cooling efficiency.

[0002] Capillary tubes are widely used in small-capacity appliances such as electric refrigerators, room air conditioners, car air conditioners, and showcases. Capillary tubes are usually about 1 m long and have an inner diameter of 0.8 to 2.0 mm. They are installed in the location where the expansion valve is installed, and their piping resistance acts as a regulator and pressure reducer. Their diameter and length are determined by the capacity of the refrigeration unit, operating conditions, and refrigerant charge.

[0003] Since the degree of constriction of the capillary tube is always constant, when considering the efficiency of the refrigeration system, it is better to constantly adjust the manual expansion valve or use a temperature-type automatic expansion valve, but in the case of refrigeration systems with small capacity, the capillary tube is used a lot in terms of cost, and it is also the simplest in structure, so there are few parts to fail, and during compressor stop, the pressure of the high pressure and low pressure parts is balanced through the capillary tube, making it easy to start the compressor.

[0004] A capillary tube is a long, thin tube that functions as a conduit for fluid flow. Capillary tubes have a relatively simple structure and no moving parts, offering the advantage of requiring no maintenance due to wear and tear.

[0005] Meanwhile, capillaries are generally manufactured using copper through extrusion, multi-stage drawing, and annealing processes to plastically process them into a diameter suitable for the design dimensions. Here, extrusion is a hot working method mainly performed at high temperatures, which processes a workpiece into a shape with a constant cross-section by passing it through a die, and drawing is a cold working method mainly performed at room temperature, which processes a workpiece in the form of a rod, wire, or tube into a shape that reduces the cross-sectional area of ​​the workpiece.

[0006] Recently, attempts have been made to replace copper in terms of material diversification, and aluminum is the metal that is the most abundant among the elements that make up the Earth's crust, and not only does it have excellent properties such as processability, lightness, and conductivity, but it is also easy to alloy with other metals and can have various material properties depending on the composition of the alloying elements, so it is attracting attention as a material to replace copper capillaries.

[0007] However, when an aluminum alloy is manufactured into a capillary through an extrusion process using a hot working method, the characteristics and corrosion resistance of the aluminum alloy can be maintained, but the diameter of the capillary is small, so the extrusion speed decreases due to the low extrusion ratio, making capillary manufacturing impossible or requiring additional processes, which increases manufacturing costs. In addition, when an aluminum alloy is manufactured into a capillary through a multi-stage drawing process using a cold working method, there is a problem that fracture may occur in a subsequent forming process such as bending due to an increase in strength and a decrease in elongation caused by work hardening, and as the structure of the internal particles is unevenly deformed, the internal stress increases, causing stress corrosion in a corrosive environment, which reduces corrosion resistance.

[0008] In particular, for aluminum capillaries to replace copper, the aluminum alloy must maintain properties such as corrosion resistance even after being processed into aluminum capillaries. Therefore, optimization of the process is required to manufacture capillaries that meet the design diameter specifications while maintaining the raw material properties and corrosion resistance of the aluminum alloy.

[0009] As a prior art for solving this problem, there is Patent Publication No. 10-2021-0016847, but the prior art does not solve the problem of joining because it uses aluminum capillaries with different inner diameters by simultaneously extruding them and independently compressing them to join multiple aluminum capillaries with different inner diameters.

[0010] The present invention is to solve the above problems, and the purpose of the present invention is to provide a cutting and expanding device for a capillary pipe having different inner diameters, which houses a capillary pipe and a suction pipe, that is, an aluminum billet, inside and extrudes it through an extrusion mold, so that the capillary pipe and the suction pipe having different inner diameters are formed integrally and cut to a predetermined length in a state where the extrusion is formed into a single capillary integral shape, so that the cut portion is not damaged, and at the same time, in order to connect and join the cut capillary integral pipe having different inner diameters of the predetermined length with a counterpart, both ends of the capillary integral pipe having different inner diameters can be expanded to a predetermined size, so that the joining or fixing can be performed without corrosion or leakage of the joining portion, and the purpose of the present invention is to provide a device for cutting and expanding a capillary integral pipe having different inner diameters to increase cooling efficiency.

[0011] Specific solutions to achieve the above objectives are:

[0012] "A base (10) having a first guide rail (100) on one side of the upper surface of the plate shape formed in the longitudinal direction, a spacer (101) provided at a predetermined interval at a predetermined position, and a plurality of rollers (102) provided on the lower surface, and a grip moving part (20) provided near both ends of the upper surface of the base (10) so that loading, cutting, expansion, and discharge of a capillary-integrated pipe (P) are automatically and sequentially performed, and a loading settling base (300) provided with a loading settling groove (301) of a capillary-integrated pipe (P) at the rear of the grip moving part (20), a pair of cutting settling bases (310) provided with a cutting settling groove (311), a pair of expansion settling bases (320) provided with an expansion settling groove (321), and a pair of discharge settling bases (330) provided with a discharge settling groove (331) It includes a grip mounting portion (30) formed in a row from one side to the other and equipped to be automatically sequentially formed, a cutting portion (40) equipped with a cutting blade (400) at the rear of the cutting mounting portion (310), and an expansion portion (50) at the rear of the expansion mounting portion (320) that enables expansion to a predetermined position at both ends of the capillary integrated pipe (P).

[0013] The grip moving part (20) includes a moving plate (200) having a second guide rail (201) formed horizontally long on the upper surface, and a loading grip (210), a cutting grip (211), an expansion grip (212), and a discharge grip (213) formed sequentially in the horizontal direction from one side to the other on the lower surface integrally with the moving plate (200), a moving cylinder (220) formed on one side of the moving plate (200), and a fixed member (230) having a lifting cylinder (231) formed on the second guide rail (201) on the upper surface of the moving plate (200).

[0014] The cutting part (40) is formed with a vertical slit (313) at a predetermined position on the upper plate of the pair of cutting mounting plates (310), and a cutting cylinder (312) is provided on the upper part of the upper plate of the cutting mounting plate (310), and a cutting blade (400) is provided on the lower surface of the cutting cylinder (312).

[0015] The above expansion part (50) is provided with a second expansion cylinder (500) at the rear of the expansion mounting plate (320), and the second expansion cylinder (500) is provided with a first expansion tool (510) and a second expansion tool (520), wherein the first expansion tool (510) has a shape in which the outer circumferential surface of the tip is relatively tapered toward the center, and the second expansion tool (520) has a cutting expansion device for a capillary integral pipe having different inner diameters, including a nail-shaped end.

[0016] The above grip mounting portion (30) is

[0017] A cutting expansion device for a capillary integrated pipe having different inner diameters, including a cutting cylinder (312) provided on the upper part of the upper plate of the pair of cutting mounting plates (310), a first expansion cylinder (322) provided on the upper part of the upper plate of the pair of expansion mounting plates (320), and a discharge cylinder (332) provided on the upper part of the upper plate of the pair of discharge mounting plates (330),

[0018] The above cutting blade (400) is

[0019] A cutting expansion device for a capillary integrated pipe having different inner diameters, including a leading edge cutting blade (410) formed in the front center of the lower surface, an oval cutting blade (420) formed concavely on both sides based on the leading edge cutting blade (410), and a tapered surface (421) formed at the rear of the oval cutting blade (420) that is inclined upward,

[0020] The above capillary integrated pipe (P) is,

[0021] The above purpose can be achieved by forming a "cutting expansion device for a capillary-integrated pipe having different inner diameters, including forming a first expansion slope (530) outward at a predetermined position on the inner surface and then forming a second expansion slope (540) on the inner surface of the tip, as a structural feature.

[0022] The present invention, configured as described above, accommodates a capillary pipe and suction pipe with different inner diameters, that is, an aluminum billet, inside and extrudes it through an extrusion mold, thereby integrally forming a plurality of capillaries with different inner diameters and extruding them into a single capillary, thereby eliminating the hassle of separately extruding and joining capillaries with different inner diameters, thereby shortening the manufacturing process and demonstrating speed and efficiency.

[0023] In addition, when cutting a single capillary formed integrally by capillary pipes and suction pipes with different inner diameters to a predetermined length, the cutting portion is not damaged, and at the same time, in order to connect and join the two-stage integral capillaries with different inner diameters of the cut predetermined length, both ends of the two-stage integral capillaries with different inner diameters are expanded to a predetermined size, thereby enabling joining or fixing without corrosion or leakage of the joining portion, and exhibiting the effect of increasing cooling efficiency.

[0024] Although the present invention has been illustrated and described above with reference to specific preferred embodiments, the present invention is not limited to the above embodiments, and various changes and modifications may be made by a person having ordinary skill in the art to which the invention pertains within a scope that does not depart from the spirit of the present invention.

[0025] Figure 1 is a perspective view of a cutting expansion device for a capillary integral pipe with different inner diameters according to the present invention.

[0026] Figure 2 is a perspective view of a state in which a grip moving part, a grip settling part, a cutting part, and an expanding part are combined in a cutting expanding device of a capillary integrated pipe with different inner diameters according to the present invention.

[0027] Figure 3 is a perspective view of the grip moving part of the cutting expansion device of the capillary integral pipe with different inner diameters according to the present invention, separated from the grip mounting part, cutting part, and expansion part.

[0028] Figure 4 is a perspective view of the combined state of the grip mounting portion, cutting portion, and expansion portion in the cutting expansion device of the capillary integral pipe with different inner diameters according to the present invention.

[0029] Figure 5 is a cross-sectional view of a pair of cutting mounting plates and a cutting section in a cutting expansion device for a capillary integral pipe with different inner diameters according to the present invention.

[0030] Figure 6 is a perspective view and an enlarged perspective view of a cutting blade in a cutting expansion device for a capillary pipe having different inner diameters according to the present invention.

[0031] Figure 7 is a perspective view of a pair of expansion fittings and an expansion part in a cutting expansion device for a capillary integral pipe with different inner diameters according to the present invention.

[0032] Figure 8 is a plan view of the entire cutting expansion device of the capillary integral pipe with different inner diameters according to the present invention, and an enlarged cross-sectional view of the main part of the two-stage integral capillary with different inner diameters before manufacturing and the two-stage integral capillary with different inner diameters after manufacturing.

[0033] Figure 9 is a perspective view of a two-stage integral capillary tube with different inner diameters before manufacturing and a two-stage integral capillary tube with different inner diameters after manufacturing in a cutting expansion device of a capillary integral pipe with different inner diameters according to the present invention.

[0034] Figure 10 is a drawing showing that a second expansion tool is formed on each side of a first expansion tool in a cutting expansion device for a capillary integral pipe with different inner diameters according to the present invention.

[0035] Fig. 11 is a detailed perspective view of a cutting blade in a cutting expansion device for a capillary integral pipe with different inner diameters according to the present invention.

[0036] Specific structural or functional descriptions of embodiments according to the concept of the present invention disclosed in this specification are merely exemplified for the purpose of explaining embodiments according to the concept of the present invention, and embodiments according to the concept of the present invention may have various changes and may have various forms, and therefore include all changes, equivalents, or substitutes included in the spirit and technical scope of the present invention, and terms or words used in the specification and claims are not to be limited to their usual or dictionary meanings, and should be interpreted as meanings and concepts that are consistent with the technical idea of ​​the present invention, based on the fact that the inventor can appropriately define the concept of the term in order to explain his or her own invention in the best way. Therefore, the embodiments described in the specification of the present invention and the configurations illustrated in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical idea of ​​the present invention, and it should be understood that various equivalents and modifications that can replace them may be possible or exist at the time of filing the present invention.

[0037] Additionally, unless otherwise defined in the specification of the present invention, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and shall not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0038] Hereinafter, the specific configuration and operation of the cutting expansion device for a capillary integral pipe having different inner diameters according to the present invention will be described in detail with drawings.

[0039] Fig. 1 is a perspective view of a cutting expansion device for a capillary tube having different inner diameters according to the present invention, Fig. 2 is a perspective view of a cutting expansion device for a capillary tube having different inner diameters according to the present invention, in which a grip moving part, a grip mounting part, a cutting part, and an expanding part are combined, Fig. 3 is a perspective view of a cutting expansion device for a capillary tube having different inner diameters according to the present invention, in which a grip moving part is separated from a grip mounting part, a cutting part, and an expanding part, Fig. 4 is a perspective view of a cutting expansion device for a capillary tube having different inner diameters according to the present invention, in which a grip mounting part, a cutting part, and an expanding part are combined, Fig. 5 is a cross-sectional view of a pair of cutting mounting stands and a cutting part in a cutting expansion device for a capillary tube having different inner diameters according to the present invention, Fig. 6 is a perspective view and an enlarged perspective view of a cutting blade in a cutting expansion device for a capillary tube having different inner diameters according to the present invention, and Fig. 7 is a cross-sectional view of a cutting expansion device for a capillary tube having different inner diameters according to the present invention, in which a grip moving part is separated from a grip mounting part, a cutting part, and an expanding part, This is a perspective view of a pair of expansion holders and an expansion part in a cutting expansion device for a capillary integral pipe, and FIG. 8 is an overall plan view of a cutting expansion device for a capillary integral pipe having different inner diameters according to the present invention and an enlarged cross-sectional view of a main part of a two-stage integral capillary having different inner diameters before manufacturing and a two-stage integral capillary having different inner diameters after manufacturing, and FIG. 9 is a perspective view of a two-stage integral capillary having different inner diameters before manufacturing and a two-stage integral capillary having different inner diameters after manufacturing in a cutting expansion device for a capillary integral pipe having different inner diameters according to the present invention, and FIG. 10 is a drawing showing that second expansion tools are formed on both sides of a first expansion tool in a cutting expansion device for a capillary integral pipe having different inner diameters according to the present invention, and FIG. 11 is a detailed perspective view of a cutting blade in a cutting expansion device for a capillary integral pipe having different inner diameters according to the present invention.

[0040] Hereinafter, the specific configuration of the present invention will be described.

[0041] The indication symbol 10 indicates an expectation, and as shown in Fig. 1, the expectation (10) is formed to be long in the longitudinal direction, and a first guide rail (100) is provided on one side of the upper surface of the plate shape, and a spacer (101) is provided at a predetermined interval at a predetermined position, and a plurality of carriages (102) are provided on the lower surface.

[0042] The first guide rail (100) described above is for adjusting the gap according to the length of the capillary integrated pipe (P) by moving the grip moving part, grip settling part, cutting part, and expansion part described below along the first guide rail (100).

[0043] Meanwhile, a set of a grip moving part, a grip settling part, a cutting part, and an expanding part is provided at each end of the above-mentioned expectation (10), and a capillary integrated pipe (P) is connected between the sets so that the interval of a set of a grip moving part, a grip settling part, a cutting part, and an expanding part provided on both sides can be adjusted to perform processes such as cutting and expanding below.

[0044] In addition, the purpose is to minimize loss caused by the flow of the capillary integral pipe (P) and maintain safety by allowing the capillary integral pipe (P) to be installed on the spacer (101) and to enable operation.

[0045] The above capillary integrated pipe (P) refers to a capillary pipe and a suction pipe having different inner diameters as shown in FIGS. 9 and 10.

[0046] The instruction sign 20 indicates a grip moving part, and the grip moving part (20) is provided so that loading, cutting, expansion, and discharge of a capillary integrated pipe (P) are automatically and sequentially performed on one side near both ends of the upper surface of the base (10), as shown in FIGS. 2 and 3.

[0047] The above grip moving part (20) is,

[0048] A moving plate (200) is formed on the upper surface of which a second guide rail (201) is formed in a horizontal direction, and a loading grip (210), a cutting grip (211), an expansion grip (212), and a discharge grip (213) are formed sequentially in the horizontal direction from one side to the other on the lower surface of the moving plate (200) as one body, and a moving cylinder (220) is formed on one side of the moving plate (200), and a fixed member (230) equipped with a raising and lowering cylinder (231) is formed on the second guide rail (201) on the upper surface of the moving plate (200).

[0049] That is, when moving left and right, it is moved by the moving cylinder (220), and before moving left and right, the fixed member (230) connected to the second guide rail (201) by the raising and lowering cylinder (231) is raised and lowered and then moved by the moving cylinder (220).

[0050] By operating in this manner, the capillary integrated pipe (P) gripped by the loading grip (210), cutting grip (211), expansion grip (212), and discharge grip (213) can move without interference.

[0051] The instruction symbol 30 indicates a grip mounting portion, and the grip mounting portion (30) is provided with a loading mounting base (300) having a loading mounting groove (301) of a capillary-integrated pipe (P) at the rear of the grip moving unit (20), a pair of cutting mounting bases (310) having a cutting mounting groove (311), a pair of expansion mounting bases (320) having an expansion mounting groove (321), and a pair of discharge mounting bases (330) having a discharge mounting groove (331) formed in a row from one side to the other side so that they are automatically sequentially formed.

[0052] The above grip mounting portion (30) is

[0053] A cutting cylinder (312) is provided on the upper part of the upper plate of the pair of cutting mounting plates (310), a first expansion cylinder (322) is provided on the upper part of the upper plate of the pair of expansion mounting plates (320), and a discharge cylinder (332) is provided on the upper part of the upper plate of the pair of discharge mounting plates (330).

[0054] The instruction symbol 40 indicates a cutting section, and the cutting section (40) is provided with a cutting blade (400) at the rear of the cutting mounting plate (310) as shown in FIGS. 5 and 6.

[0055] The above cutting part (40) is,

[0056] A slit (313) is formed vertically at a predetermined position on the upper plate of the pair of cutting mounting plates (310), a cutting cylinder (312) is provided on the upper part of the upper plate of the cutting mounting plate (310), and a cutting blade (400) is provided on the lower surface of the cutting cylinder (312).

[0057] Preferably, the cutting blade (400) is as shown in Fig. 6.

[0058] A leading edge cutting blade (410) is formed in the front center of the lower surface, and oval cutting blades (420) are formed concavely on both sides of the leading edge cutting blade (410), and a tapered surface (421) is formed at the rear of the oval cutting blade (420) that is inclined upward.

[0059] As the cutting blade (400) is formed in this way, the cutting portion of the capillary pipe (P) made of aluminum is cut accurately and cleanly without deformation and without deformation of the inner diameter. That is, the tip cutting blade (410) penetrates the center of the cutting portion of the capillary pipe (P) and at the same time, the oval cutting blades (420) provided on both sides cut the remaining cutting portion of the capillary pipe (P), so that the tip cutting blade (410) cuts the capillary pipe (P) made of aluminum first without stress, that is, deformation, and the oval cutting blades (420) cut on both sides with the cut portion as an axis, so that the cutting portion of the capillary pipe (P) is cut accurately and cleanly without deformation.

[0060] Preferably, as shown in Fig. 11, the angle between the tip cutting blade (410) and the elliptical cutting blade (420) is most preferably 15 degrees, and the angle of the tapered surface (421) is most preferably 27 degrees, so that when cutting the capillary integrated pipe (P) under the above optimal conditions, the problem of the cutting portion of the capillary integrated pipe (P) bending inward is solved, and the cutting portion is cut cleanly.

[0061] The indication symbol 50 indicates an expansion part, and the expansion part (50) is configured to enable expansion to a predetermined position at both ends of the capillary integrated pipe (P) behind the expansion mounting plate (320) as shown in FIGS. 3, 4 and 7.

[0062] The above expansion part (50) is as shown in Fig. 7,

[0063] A second expansion cylinder (500) is provided at the rear of the above expansion mounting plate (320), and a first expansion tool (510) and a second expansion tool (520) are formed in the second expansion cylinder (500). The first expansion tool (510) has a shape in which the outer peripheral surface of the tip is relatively tapered toward the center, and the second expansion tool (520) has a tip in the shape of a nail.

[0064] Preferably, the second expansion tool (520) may be configured to have a plurality or more as shown in FIG. 10.

[0065] As shown in Figs. 8 and 9, the capillary integrated pipe (P) is formed by cutting and expanding as described above.

[0066] When the inner circumference is formed, a first expansion slope (530) is formed outward at a predetermined position, and a second expansion slope (540) is formed on the inner circumference of the tip.

[0067] The unexplained symbol C is a controller that enables the driving control operation of the components of the present invention.

[0068] Hereinafter, the operation of the present invention will be described as follows.

[0069] First, a capillary-integrated pipe (P) is installed on a loading mounting base (300) in a state where a set of a grip moving part (20), a grip settling part (30), a cutting part (40), and an expansion part (50) are provided at both ends of the expectation (10) shown in Fig. 1, and then the loading grip (210) grips the capillary-integrated pipe (P).

[0070] The reason the loading grip (210) operates in this way is because the controller (C) is operated.

[0071] In the above state, the grip moving part (20) moves along the second guide rail (201) by the driving of the moving cylinder (220) to move the capillary integrated pipe (P) to the cutting part (40), which is the next process, and is seated on a pair of cutting settling stands (310) provided with cutting settling grooves (311) of the grip settling part (30). However, when the capillary integrated pipe (P) is moved to the cutting part (40) in this way, the cutting cylinder (312) must be operated to separate the upper plate from the lower plate of the cutting settling stand (310).

[0072] As described above, when the capillary tube integrated pipe (P) is moved to the cutting section (40), the cutting cylinder (312) is lowered to fix the capillary tube integrated pipe (P) to the cutting mounting plate (310), and then, as illustrated in FIG. 5, the cutting blade (400) is lowered between the slits (313) to cut the optimal position of the capillary tube integrated pipe (P), and then, when the cutting blade (400) and the cutting cylinder (312) are raised, the cutting mounting plate (310) is opened, and the cutting grip (211) is gripped by the moving cylinder (220) and then the capillary tube integrated pipe (P) is placed on the expansion mounting plate (320). At this time, the first expansion cylinder (322) raises the upper plate of the expansion mounting plate (320) and then places the capillary tube integrated pipe (P) as described above.

[0073] As described above, after the capillary integrated pipe (P) is installed, the first expansion cylinder (322) is lowered to fix the capillary integrated pipe (P) to the expansion mounting base (320), and as shown in FIG. 7, the expansion process is performed on the capillary integrated pipe (P) using the first expansion tool (510) and the second expansion tool (520) by driving the second expansion cylinder (500).

[0074] Next, after the above expansion is completed, the second expansion cylinder (500) is moved backwards while simultaneously removing the first expansion tool (510) and the second expansion tool (520) from the capillary integrated pipe (P), and then the first expansion cylinder (322) is raised to open the expansion mounting base (320), and then the expansion grip (212) is used by the moving cylinder (200) to mount the expanded capillary integrated pipe (P) on the discharge mounting base (330). Of course, at this time, the discharge mounting base (330) must be opened by the discharge cylinder (332).

[0075] By sequentially performing a series of processes in this way, everything from cutting to expansion of the capillary integral pipe (P) is automatically performed.

[0076] The present invention, configured as described above, is a two-stage integral capillary tube having different inner diameters, that is, an aluminum billet is housed inside, and a plurality of capillaries having different inner diameters are formed integrally by extruding them through an extrusion mold, thereby eliminating the hassle of separately extruding and joining capillaries having different inner diameters, thereby shortening the manufacturing process and demonstrating speed and efficiency.

[0077] In addition, when cutting a single capillary formed by integrally forming a plurality of capillaries with different inner diameters to a predetermined length, the cutting portion is not damaged, and at the same time, in order to connect and join the two-stage integral capillaries with different inner diameters of the cut predetermined length, both ends of the two-stage integral capillaries with different inner diameters are expanded to a predetermined size, thereby enabling joining or fixing without corrosion or leakage of the joining portion, and exhibiting the effect of increasing cooling efficiency.

Claims

1. A base (10) formed in a longitudinal direction, having a first guide rail (100) on one side of the upper surface of the plate shape, spacer holders (101) provided at regular intervals at predetermined locations, and having a plurality of or more rollers (102) provided on the lower surface, and a grip moving unit (20) provided on one side near both ends of the upper surface of the base (10) so that loading, cutting, expansion, and discharge of a capillary-integrated pipe (P) are automatically and sequentially performed, and at the rear of the grip moving unit (20), a loading mounting base (300) provided with a loading mounting groove (301) of a capillary-integrated pipe (P), a pair of cutting mounting bases (310) provided with a cutting mounting groove (311), a pair of expansion mounting bases (320) provided with an expansion mounting groove (321), and a pair of discharge mounting bases (331) provided The discharge settling unit (330) is formed in a row from one side to the other side and is equipped with a grip settling unit (30) that is equipped with a cutting blade (400) at the rear of the cutting settling unit (310) and an expansion unit (50) at the rear of the expansion settling unit (320) that enables expansion to a predetermined position at both ends of the capillary integrated pipe (P). The grip moving part (20) above includes a moving plate (200) formed with a second guide rail (201) formed horizontally long on the upper surface, a loading grip (210), a cutting grip (211), an expansion grip (212), and a discharge grip (213) formed sequentially in the horizontal direction from one side to the other on the lower surface integrally with the moving plate (200), a moving cylinder (220) formed on one side of the moving plate (200), and a fixed member (230) equipped with a raising / lowering cylinder (231) formed on the second guide rail (201) on the upper surface of the moving plate (200). The cutting part (40) is formed with a vertical slit (313) at a predetermined position on the upper plate of the cutting mounting plate (310) which is formed as a pair, and a cutting cylinder (312) is provided on the upper part of the upper plate of the cutting mounting plate (310), and a cutting blade (400) is provided on the lower surface of the cutting cylinder (312). The above expansion member (50) is provided with a second expansion cylinder (500) at the rear of the expansion mounting plate (320), and the second expansion cylinder (500) is provided with a first expansion tool (510) and a second expansion tool (520), wherein the first expansion tool (510) has a shape in which the outer peripheral surface of the tip is relatively tapered toward the center, and the second expansion tool (520) has a nail-shaped tip end. This is a cutting expansion device for a capillary integral pipe having different inner diameters.

2. In paragraph 1, The above grip fixing part (30) is A cutting expansion device for a capillary integral pipe having different inner diameters, comprising: a cutting cylinder (312) provided on the upper surface of the upper plate of the pair of cutting mounting plates (310), a first expansion cylinder (322) provided on the upper surface of the pair of expansion mounting plates (320), and a discharge cylinder (332) provided on the upper surface of the upper plate of the pair of discharge mounting plates (330).

3. In paragraph 1, The above cutting blade (400) is A cutting expansion device for a capillary integral pipe having different inner diameters, comprising a leading edge cutting blade (410) formed in the front center of a lower surface, oval cutting blades (420) formed concavely on both sides based on the leading edge cutting blade (410), and a tapered surface (421) formed at the rear of the oval cutting blade (420) that is inclined upward.

4. In paragraph 1, The above capillary integral pipe (P) is A cutting expansion device for a capillary integral pipe having different inner diameters, which includes forming a first expansion slope (530) outwardly at a predetermined position on the inner surface and then forming a second expansion slope (540) on the inner surface of the tip.

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