KR101647705B1 - fin forming tool improving the drainage and forming tool assembly using the same - Google Patents

Abstract

The present invention provides a unit forming tool to form a radiation fin with improved drainage performance which forms a louver of a radiation fin emitting heat in a wavy or diagonal shape by being in contact with tubes of a heat exchanger; and a forming tool assembly using the same. The tool assembly using the unit forming tool to form the radiation fin comprises: a first louver forming unit on an outer circumference; a pair of first cover members; and sawtooth-shaped first forming units formed on the outer circumference of a first main body unit on a disk, and installed between the first cover members. First unit forming tools having the first louver forming unit and a second louver forming unit is formed on both sides of the first forming unit. A first tool unit includes a first connection unit connecting the first cover members and the first unit forming tools. A pair of second cover members forms the radiation fin by being connected to the first tool unit, and has the second louver forming unit on the outer circumference. The sawtooth-shaped second forming units are formed on the outer circumference of a second main body unit on the disk, and second unit forming tools are installed between the first cover members. The second unit forming tools has a third and fourth louver forming unit on both sides of the second forming unit. The first tool unit includes the first connection unit connecting the second cover members and the second unit forming tools. An end of the first and second louver forming units of the first forming units and the end of the third and fourth louver forming units of the second forming unit are formed in a wavy form to bend the louver formed in a wave shape.

Description

TECHNICAL FIELD [0001] The present invention relates to a unit forming tool for forming a heat radiating fin with improved drainage performance and a forming tool assembly using the same,

The present invention relates to a tool for forming a radiating fin with improved drainage characteristics, and more particularly, to a tool for forming a radiating fin with improved drainage characteristics for forming a radiating fin by which a louver is formed in a corrugated shape and discharge of condensed water is smoothly performed, And a molding tool assembly using the same.

Generally, the heat exchanger is provided with a passage portion through which the heat exchange medium can flow, and is designed to perform heat exchange with the outside air while the heat exchange medium flows through the passage portion. The type of the heat exchange medium and the heat exchange medium A variety of methods have been developed depending on internal pressures such as a fin tube type, a serpentine type, a drawn cup type, and a parallel flow type. have

In such a heat exchanger, a heat exchanger core (generally referred to as a Heater Core, an Evap Core, a Radiator Core, or an Inter Cooler Core) in which heat exchange is mainly performed is composed of a header and a radiating fin and a tube which are stacked and fixed between the header.

The parallel flow type heat exchanger of the heat exchangers includes a pair of header tanks arranged side by side, a plurality of tubes disposed side by side between the header tanks and having both ends thereof inserted and fixed in the tube insertion holes formed in the header tank, And a heat-dissipating fin provided between the tubes, the heat-exchanging medium having a large heat-transfer area for effectively exchanging heat with the outside.

In the heat exchangers described above, a corrugated type heat dissipating fin is used as a conventional heat dissipating fin for widening the heat dissipating area. The corrugated heat-dissipating fin has a structure in which a plate material is wavy and wrinkled, and a louver is formed on the surface thereof.

Such a conventional radiating fin improves the heat radiation performance with air, increases the heat radiation area by adjusting the bending pitch of the radiating fin in order to reduce the discharge pressure of the compressor, and adjusts the louver angle or louver pitch of the radiating fin. And the like.

However, when the conventional heat radiating fin is used as an evaporator, air is brought into contact with a surface lower than the dew point temperature so that condensed water is formed on the surface of the heat exchanger, that is, the tube and the radiating fin There is a problem in that the transfer characteristics of the heat exchanger are relatively lowered.

    Therefore, it is preferable to discharge the condensed water attached to the surface of the tube of the heat exchanger and the radiating fin as quickly as possible. In consideration of this point, the inventor of the present invention has developed and cooperated with 3 V Technology Inc. and an automotive parts research institute.

Korean Patent No. 0659568 discloses a heat exchanger pin, and Korean Patent Publication No. 2003-0020563 discloses a louver pin for a heat exchanger.

Korea Patent Publication No. 2003-0020563

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a unit forming tool for forming a heat radiating fin with improved drainability, which is capable of forming a louver of a heat radiating fin in contact with tubes of a heat exchanger, .

It is another object of the present invention to provide a unit molding tool for forming a heat dissipation fin and a molding tool assembly using the same, which can form a heat dissipation fin so that condensed water adhering to the louver of the heat dissipation fin can be smoothly discharged.

In order to accomplish the above object, the present invention provides a unit molding tool for forming a radiating fin having improved drainage characteristics, comprising: a first forming portion having sawtooth shapes formed on an outer circumferential portion of a disk-shaped body portion; And the first and second louver forming portions for cutting the thin plate between the valley formed by the corrugation and the mountain into a strip.

In the present invention, the first inlet portion and the first protrusion are formed on the crests between the first forming portions and the crests of the first forming portion, respectively.

In order to accomplish the above object, the present invention provides a tool assembly for forming a heat radiating fin of a heat exchanger, comprising: a pair of first cover members on an outer circumferential surface, a pair of first cover members, First unit forming tools provided between the first and second cover members and having first and second serration forming parts formed on the outer peripheral part of the first body part on the disc and having first and second louver forming parts formed on both sides of the first forming part, A first tool unit including a first coupling unit for coupling the first cover members and the first unit molding tools to each other;

Wherein the second louver body is formed on the outer circumferential surface by a pair of second cover members and a second cover member which is provided between the first cover members and has a sawtooth shape on the outer peripheral portion of the second body portion on the disk, Second unit forming tools having second and third forming portions formed on both sides of the second forming portion and having third and fourth louver forming portions formed on both sides of the second forming portion, And a second tool unit

The end of each of the first and second louver forming portions of the first forming portions and the end of the third and fourth louver forming portions of the second forming portion are formed to form a corrugated wave to bend the formed louver into a waveform.

In the present invention, a first inlet portion and a first projection portion are formed at the apex portion and the valley portion of the mountain portion of the first forming portion, and a second projection portion is formed at the valley of the second forming portion constituting the second unit forming tool, And a top plate means for smoothing a portion to be bent at the time of forming the radiating fin by forming a second inlet portion and coupling them together.

A unit molding tool for molding a radiating fin having improved drainage performance and a molding tool assembly using the unit molding tool according to the present invention can form a louver of a radiating fin to be formed in the shape of a wave. The louvers formed in the shape of the corrugations can generate vortex of the air passing therethrough to improve the heat radiation characteristic and smooth discharge of the condensed water attached to the surface of the louver.

1 is a perspective view showing a molding tool assembly for forming a radiating fin with improved drainage according to the present invention,
FIG. 2 is a perspective view showing a unit molding tool for molding a radiating fin with improved drainage shown in FIG. 1,
Fig. 3 is a partially cutaway perspective view showing the first and second forming units according to the present invention,
4 is a side view showing a state in which the radiating fin is formed by the first and second unit forming tools,
5 is a partially cutaway perspective view showing a state in which the radiating fin is formed by the first and second forming tools;

The present invention is for forming a heat dissipating fin in contact with a tube or tube plate of a tube to widen the heat radiation surface area of the heat exchanger. One embodiment of the heat dissipating fin is shown in FIG. 1 to FIG. Fig. 1 is a perspective view showing a molding tool assembly according to the present invention, and Fig. 2 is a front view showing an excerpt of a unit molding tool.

Referring to the drawings, a forming tool assembly 10 for forming a radiating fin with improved drainage characteristics according to the present invention includes a first tool unit 20 and a second tool unit 60 which are in close contact with each other to form a louver, Is formed to have a waveform.

The first tool unit 20 includes a plurality of first unit forming tools 30 disposed between a pair of first cover members 22 and 23 each having a first louvered portion 22a and 23a And they are engaged by the engaging portion 25 including the bolts which are mutually engaged through the first cover members 22, A center portion of the first cover members 22 and 23 is formed with a bearing portion 22b to which a driving shaft is coupled. A through hole or a bearing portion passing through the driving shaft is formed at the center of the first unit forming tool member 30 A through hole to which the bolt is coupled is formed.

As shown in FIG. 2, the first unit forming tool 30 includes a serpentine first forming part 32 for forming a radiating fin in a wave form on an outer circumferential part of a main body 31 formed as a disk, First and second ridge forming portions 35 and 36 are formed on both sides of the first forming portion 32, that is, both inclined portions of the first forming portion 32. The first louver forming portion 35 formed on the inclined surface of the first forming portion 32 is formed to be positioned on the front surface side of the main body portion of one inclined portion and the second louver forming portion 35 is formed on the main body portion of the other inclined portion, (31). In addition, the first and second louver forming portions 35 and 36 are formed to have a corrugated shape and to be formed into a corrugated shape along with the front end of the heat radiating fin base material. The outer peripheral surface of the first forming portion 32 is formed to be inclined at a predetermined angle with respect to the center axis of the first unit forming tool 30. [ That is, the first louver forming portion 35 is inclined from the end of the body portion 31 to the front side of the body portion 31 and is inclined from the end of the second louver forming portion 36 toward the rear side of the body portion 31.

A first inlet portion 51 and a first projection portion 52 are formed on the end portion of the first forming portion 32, that is, the apex portion and the valley portion of the mountain portion, and the second unit forming tool member 70 A second projection portion 54 and a second projection portion 53 formed at the ridge portion and the acid portion of the second forming portion 72 constituting the second forming portion 72 are formed and coupled to each other to thereby smooth the bent portion at the time of molding, Means 50 are provided.

On the other hand, the second tool unit 60 has substantially the same configuration as the first tool unit 20.

The second tool unit 60 includes a plurality of first unit forming tool members 70 between a pair of second cover members 62 and 63 each having a second louvered portion 62a and 63a, Which are engaged by the second engaging portion 65 including the bolts which are mutually coupled through the second cover members 62, A center portion of the second cover members 62 and 63 is formed with a shaft receiving portion 62b to which a driving shaft is coupled. A center hole of the first unit forming tool member 70 is provided with a through hole or a bearing receiving portion A through hole to which the bolt is coupled is formed.

As shown in FIGS. 2 and 3, the second unit forming tool member 70 has a serrated second forming portion (not shown) for shaping the radiating fin into a wave form on the outer circumferential portion of the second body portion 71 formed as a disk The third and fourth louver forming portions 75 and 76 are formed on both sides of the second forming portion 72, that is, both inclined portions of the second forming portion. The third louver forming portion 75 formed on the inclined surface of the second forming portion 75 is formed to be positioned on the front surface side of the main body portion of the one inclined portion and the fourth louver forming portion 76 is formed on the second inclined portion And is positioned on the rear surface side of the main body portion 71. In addition, the fourth and fifth louvers 75 and 76 are formed in a corrugated shape at the ends thereof to be formed into a wave shape (meandering shape) together with the front end of the heat sink fin base material.

The end portions of the first, second, third, and fourth louver forming portions 35, 36, 75, and 76 are not limited to the corrugated shapes, but may be serrated, As shown in FIG. The outer surface portion of the second forming portion 72 is formed to be inclined from the end of the second louver forming portion to the front surface and the rear surface of the body portion 71 as described above.

The operation of the unit forming tool through the process of forming the radiating fin by the forming tool assembly for forming the radiating fin with improved drainage according to the present invention will be described in more detail as follows.

In order to form the radiating fin 100 having the wave louver, as shown in Figs. 4 and 5, the first forming portions 32 of the first unit forming tools 30 constituting the first tool unit 20 And the second forming units 72 of the second unit forming tools 70 constituting the second tool unit 60 rotate in a state where they are engaged with each other and supply the aluminum thin plate for manufacturing the heat radiating fin 100 do.

5, as the first tool unit 20 and the second tool unit 60 rotate, the first and second forming parts 32 and 72 are engaged with each other, Type corrugated shape or wave shape. The first and second louver forming portions 35 and 36 formed by the first forming portion 32 and the third and fourth louver forming portions 75 and 76 formed in the second forming portion 72 The louvers are formed by cutting the slopes formed by the first and second forming portions 32 and 72 in a slanting direction in a sloping direction by a shear force in an oblique direction, (Both ends are bent so as to be inclined) at a predetermined angle by the inclined surfaces 75a and 76a of the third and fourth louver forming portions 75 and 76 and the side inclined surfaces 35a and 36a of the third and fourth louver forming portions 75 and 76, .

Since the end portions of the first and second louver forming portions 35 and 36 are formed in a wave shape, the louvers cut into the strip in the process of cutting by the shear force are formed into a wave shape do. Therefore, the louver 110 of the heat-radiating fin 100 to be formed has a waveform.

In the process of forming the aluminum foil in a corrugated shape by mating the first and second forming portions 30 and 70, the first inlet portion 51 and the second inlet portion are formed on the mountain portion and the valley portion of the first forming portion 32, Since the second protrusions 54 and the second protrusions 53 are formed in the mountains and the valleys of the second forming unit 72, The bead 120 is formed at the site and the bone site, so that the bending site can be smoothed.

As described above, the unit forming tool for forming the heat radiating fin with improved drainage characteristics of the present invention and the molding assembly using the same can mold the louver in the shape of a wave during the process of forming the heat radiating fin. Further, The discharge of the condensed water adhering to the discharge port can be smoothly performed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

The unit forming tool for forming a heat radiating fin with improved drainage capability of the present invention and the forming tool assembly using the heat radiating fin can be widely used not only for heat dissipating fin of various heat exchangers but also for a device for cutting a thin plate in a predetermined direction and molding it.

20, a first tool unit 30, a first unit molding tool
32; a first forming part 35; a first louver forming part
36, a second louver forming portion
60, a second tool unit 70, a second unit forming tool
72; a second forming part 75; a third louver forming part
76, a fourth louver forming portion
100; radiator fins 110; louvers

Claims (4)

Shaped first shaping portions are formed on the outer peripheral portion of the disk-shaped body portion, a thin plate constituting a radiating fin is formed in a corrugated shape on both side inclined portions of the first shaping portion, and a thin plate between corrugations formed by corrugations is cut into strips Wherein the first and second louver forming portions are formed on the first and second louvers. The method according to claim 1,
And a first protruding portion and a first pulling portion are formed on a crest between the first forming portions and a crest portion of the first forming portion, A pair of first cover members forming a first luer unformed portion on an outer circumferential surface thereof and first and second serration forming portions provided on the outer circumferential portion of the first main body portion on the disk between the first cover members, A first tool unit including first unit forming tools provided with first and second louver forming portions on both sides of the first and second louvers, and a first engaging portion coupling the first cover members and the first unit forming tools to each other;
A pair of second cover members forming a second luer unformed portion on an outer circumferential surface thereof, and a pair of second cover members provided between the second cover members, wherein teeth on the outer peripheral portion of the second body portion on the disk Second lid forming portions are formed on both sides of the second forming portion and second and third lid forming portions provided on both sides of the second forming portion, A second tool unit including a coupling portion
Wherein an end portion of each of the first and second louver forming portions of the first forming portions and an end portion of the third and fourth louver forming portions of the second forming portion are formed so as to bend the molded louver in a corrugated shape, Molding tool assembly The method of claim 3,
The first protruding portion and the first protruding portion are formed at the apex portion and the valley portion of the mountain portion of the first forming portion and the second protruding portion and the second protruding portion are formed at the apex and the mountain portion of the second forming portion constituting the second unit forming tool, And a top plate means capable of smoothly forming a bone and an acid portion of the radiating fin when the radiating fin is formed by mutual coupling of the radiating fin and the radiating fin.

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