Insert pipe for casting

Abstract

More specifically, the present invention relates to an insert pipe for casting, which can be inserted into a casting mold during casting of a cast product so that a fluid channel can be formed inside the die-cast product, and may comprise: a body part which has a circular or elliptical cross section, which is formed in a hollow pipe shape to include a straight section and / or a curved section and which is to be inserted into a casting mold; and a pressure-dispersing flow path part, which extends in at least a portion of the outer peripheral surface of the body part in a direction of being inclined at a predetermined inclination angle with respect to the extension direction of the body part in order to disperse, during casting of an insert cast product, the collision pressure of molten metal that flows in through a gate of the casting mold and collides with the body part.

Description

Casting insert pipe

[0001] The present invention relates to a casting insert pipe, and more particularly, to a casting insert pipe that can be inserted into a casting mold during casting of a die-casting product so as to form a fluid channel inside the die-casting product.

[0002] This invention refers to the research project of the Global Key Industry Quality Response Root Technology Development (Project Unique Number: 1415178688, Project Number: 20011769, Research Project Name: Development of Cooling Channel Integrated (Thermal Conductivity 130 W / mK Class) Battery Module Case Casting Technology for Entry into the Global Electric Vehicle Market) conducted with the support of the Korea Industrial Technology Evaluation and Planning Institute with funding from the Ministry of Trade, Industry and Energy.

[0003] Die casting, also known as die casting, is a precision casting method that injects molten metal into a precisely machined steel mold to completely match any casting shape to obtain a casting identical to the mold. The product is called a die cast casting, and is used to manufacture parts for automobile parts, electrical equipment, optical equipment, and measuring instruments.

[0004] Meanwhile, electric vehicles (EVs) primarily use battery power to drive AC or DC electric motors, generating power. They are categorized as battery-only EVs and hybrid EVs. Since EVs operate by recharging their batteries, their temperature rises during charging, shortening their lifespan. Therefore, countermeasures are needed. Furthermore, outdoor communication systems, such as base stations and repeaters, employ numerous high-power amplifiers (HPAs), generating significant heat in the amplifier stages. Therefore, efficient cooling systems are required to prevent communication system malfunctions or shortened lifespans due to overheating.

[0005] In this way, cooling modules are being actively developed in which cooling pipes are insert-molded to enable heat exchange and dissipation of heat generated from the battery or communication device installed in a vehicle or other heat-generating components through the coolant in the cooling pipe.

[0006] Typically, when manufacturing a cooling module in which a cooling pipe is insert-molded by die casting, die casting can be formed by forcing molten metal into a mold at high temperature (for example, about 650℃) and high pressure (for example, about 700kg / ㎠). At this time, in order to prevent deformation of the pipe due to casting pressure and to improve the pressure-resistant strength due to the low strength of the cast insert pipe made of aluminum, a specific material is filled inside the pipe, and a separate surface treatment is performed on the outer surface of the pipe to improve the bonding strength between the molten metal and the pipe.

[0007] However, these conventional casting insert pipes had the problem that foreign substances inserted into the pipe's interior had to be removed through a separate, additional process after casting to improve the pipe's pressure-resistant strength. Furthermore, even with a separate foreign substance removal process, complete removal of foreign substances from the pipe's interior was impossible, resulting in a reduction in the cleanliness of the pipe's interior. Furthermore, despite surface treatment of the pipe's exterior, the bonding strength between the molten metal and the pipe was not perfect, resulting in continued problems with the jointing of the molten metal and the pipe.

[0008] In this way, conventional casting insert pipes have problems of increased cost due to increased process time caused by the addition of a process for inserting foreign substances into the pipe before casting, a process for removing foreign substances inside the pipe after casting, and a process for treating the outer surface of the pipe, and problems of deterioration of quality caused by the inability to completely remove foreign substances inside the pipe and the occurrence of defects due to joint problems between the molten metal and the pipe.

[0009] The present invention is intended to solve various problems including the above-described problems, and provides a casting insert pipe that can disperse the collision pressure of the molten metal that flows through the gate of the casting mold and collides with the casting insert pipe when casting an insert casting product, a structure that can increase the strength of the casting insert pipe itself, and a structure that can improve the bonding strength between the molten metal and the casting insert pipe, thereby shortening the overall process by omitting the process of inserting and removing foreign substances inside the pipe, thereby reducing the cost, and improving the quality of the insert casting product by reducing the occurrence of defects due to pipe deformation. However, these tasks are exemplary and the scope of the present invention is not limited thereby.

[0010] According to one embodiment of the present invention, a casting insert pipe is provided. The casting insert pipe may include: a body portion that can be inserted into a casting mold, the body portion having a circular or oval cross-section and a hollow pipe shape including at least one of a straight section and a curved section; and a pressure dispersing passage portion that extends in an inclined direction at a predetermined inclination angle based on an extension direction of the body portion, in order to disperse the collision pressure of molten metal that flows in through a gate of the casting mold and collides with the body portion when casting an insert casting;

[0011] According to one embodiment of the present invention, the pressure distribution channel section may include an embedded channel section whose cross-section is formed in a concave groove shape from the outer surface of the body section so that it can be formed in a form embedded in the body section, and which is formed to extend in a spiral shape inclined at a predetermined inclination angle along at least a portion of the extending direction of the body section.

[0012] According to one embodiment of the present invention, the buried channel portion may be formed so that the width thereof gradually increases from the outer circumferential surface of the body portion toward the depth of the buried channel portion, so that the opposite sides thereof may be formed to be inclined in a reverse gradient plane.

[0013] According to one embodiment of the present invention, the buried channel portion may be formed so that the width thereof gradually increases from the outer circumferential surface of the body portion toward the depth of the buried channel portion, such that the space between the two opposing sides may be formed so as to gradually increase from a first width to a second width wider than the first width.

[0014] According to one embodiment of the present invention, the buried channel portion may be formed in a circular or oval cross-section so that the width thereof gradually widens and then narrows again as it moves from the outer surface of the body portion toward the depth of the buried channel portion.

[0015] According to one embodiment of the present invention, the pressure distribution flow path part can be formed by hairline processing so that it can be formed as a micro-pattern-shaped embedded flow path part formed in a concave groove shape on the outer surface along at least a portion of the extension direction of the body part.

[0016] According to one embodiment of the present invention, the pressure distribution channel section may include a protruding channel section formed in a hook shape with a cross section protruding from the outer surface of the body section so as to be formed in a protruding shape on the body section, and formed to extend in a spiral shape inclined at a predetermined inclination angle along at least a portion of the extending direction of the body section.

[0017] According to one embodiment of the present invention, the pressure distribution flow path may include a first spiral flow path formed to extend in a spiral shape at a first inclination angle based on the extension direction of the body part.

[0018] According to one embodiment of the present invention, the pressure distribution flow path may further include a second spiral flow path formed to extend in a spiral manner at a second inclination angle that is inclined in a direction opposite to the first inclination angle based on the extension direction of the body part, so as to intersect the first spiral flow path on the outer peripheral surface of the body part.

[0019] According to one embodiment of the present invention, the pressure distribution flow path portion may be formed such that at least a portion of the flow path shape formed to extend in a spiral manner from the outer peripheral surface of the body portion is formed to face the gate of the casting mold.

[0020] According to one embodiment of the present invention, the pressure distribution path section may be formed such that the width of the path shape gradually increases from a portion corresponding to the gate of the casting mold to a portion further away from the gate.

[0021] According to one embodiment of the present invention, the pressure distribution path section may be formed such that the pitch of the path shape, which is formed to extend in a spiral shape from a portion corresponding to the gate of the casting mold to a portion further away from the gate, gradually increases.

[0022] According to one embodiment of the present invention, the pressure distribution channel section may be formed only in a certain section along the extension direction of the body section so that a section in which the pressure distribution channel section is not formed may be formed in the body section.

[0023] According to one embodiment of the present invention, the auxiliary flow path part may further include an auxiliary flow path part formed to extend in a straight line parallel to the extension direction of the body part in at least a portion of the extension direction of the body part so as to intersect with the pressure distribution flow path part formed to extend in a spiral shape from the outer surface of the body part.

[0024] According to one embodiment of the present invention, the auxiliary flow path may be formed in at least a portion of the body portion along the extension direction, but may be formed in a portion of the body portion excluding a portion corresponding to a portion where the gate of the casting mold is formed.

[0025] According to one embodiment of the present invention, the body portion may include a first body formed of a first material; and a second body formed to surround the first body, thereby forming the pressure distribution channel portion, and formed of a second material different from the first material.

[0026] According to one embodiment of the present invention, the body part may further include a reinforcing part formed to protrude from the inner surface of the body part and extend long along the extension direction of the body part, so as to increase the strength of the body part.

[0027] According to one embodiment of the present invention, the reinforcing member may include a vertical rib formed to extend from the upper end to the lower end of the inner surface of the body member.

[0028] According to one embodiment of the present invention, the reinforcing member may further include a horizontal rib formed to extend from one end of the inner circumferential surface of the body member to the other end so as to vertically intersect with the vertical rib.

[0029] According to one embodiment of the present invention, the reinforcing member may include a plurality of protruding ribs formed to protrude from the inner surface of the body member at a predetermined height and arranged radially at equal angles based on the central axis of the body member.

[0030] According to one embodiment of the present invention as described above, a pressure distribution channel section is formed on the outer surface of a casting insert pipe so as to extend in a spiral channel shape along the longitudinal direction of the body section, so that the molten metal flowing in through the gate of the casting mold and colliding with the body section is distributed left and right through the pressure distribution channel section, thereby reducing the collision pressure of the molten metal, thereby preventing the pipe from being deformed by the collision pressure of the molten metal through the gate.

[0031] In addition, since the pressure distribution channel portion is formed to extend in a spiral shape that wraps around the outer surface of the body portion, when the casting insert pipe is inserted into the casting mold, at least a part of the pressure distribution channel portion is always inserted adjacent to or facing the gate of the casting mold regardless of the direction in which the casting insert pipe is inserted, thereby enabling the insertion work of the casting insert pipe into the casting mold without directional alignment of the casting insert pipe (without the need for directional alignment of the pressure injection channel portion and the gate to face each other, and thus the insertion work time of the casting insert pipe is shortened, and the effect of the pressure distribution channel on the molten metal collision pressure is prevented from being reduced due to misalignment of the pressure distribution channel portion and the gate.

[0032] In addition, in the body of the casting insert pipe, in a section far from the gate of the casting mold where stagnation of the flow of molten metal may occur, an auxiliary flow path extending in a straight line parallel to the longitudinal direction of the body is formed to intersect with a spiral pressure distribution flow path, thereby inducing the molten metal to be quickly distributed left and right without stagnation even in a section far from the gate through the auxiliary flow path, thereby effectively reducing the collision pressure of the molten metal throughout the entire section of the body, thereby more effectively preventing the pipe from being deformed by the collision pressure of the molten metal through the gate.

[0033] In addition, the pressure distribution channel section formed in a shape that wraps around the outer surface of the body in a spiral shape is formed in a protruding shape such as a buried channel section or a protruding channel section on the outer surface of the body, so that the bonding force between the molten metal and the body can be improved by the protruding structure, and the bonding force between the molten metal and the body can be further improved by forming various types of reverse gradient shapes in the protruding structure.

[0034] In addition, by forming a rib-shaped reinforcing member that extends long along the length of the body part inside the casting insert pipe, or by double extrusion molding the pipe with different materials to increase the rigidity of the pipe itself, the pipe can be more effectively prevented from being deformed by the impact pressure of the molten metal during casting of the casting product.

[0035] In this way, when casting an insert casting product, a structure capable of dispersing the collision pressure of the molten metal that flows in through the gate of the casting mold and collides with the casting insert pipe, a structure capable of increasing the strength of the casting insert pipe itself, and a structure capable of improving the bonding strength between the molten metal and the casting insert pipe are formed on their own, so that when a cooling module in which a cooling pipe is inserted to dissipate heat generated from a heat-generating component is manufactured by die casting, not only is deformation or breakage of the pipe caused by the pressure of the molten metal injected into the casting mold prevented without a separate additional process, but also the bonding strength between the molten metal and the pipe is increased, thereby shortening the overall process by omitting the process of inserting and removing foreign substances inside the pipe, thereby reducing the cost, and reducing the occurrence of defects due to pipe deformation, thereby improving the quality of the insert casting product, it is possible to implement a casting insert pipe. Of course, the scope of the present invention is not limited by these effects.

[0036] FIG. 1 is a perspective view schematically showing a casting product into which a casting insert pipe is inserted according to one embodiment of the present invention.

[0037] Figure 2 is an enlarged view schematically showing an enlarged view of part “A” of Figure 1.

[0038] FIG. 3 is a perspective view schematically showing a casting insert pipe according to one embodiment of the present invention.

[0039] Figures 4 and 5 are cross-sectional views schematically showing the plane and side surfaces of the casting insert pipe of Figure 3.

[0040] FIGS. 6 to 22 are cross-sectional views schematically showing a plane or side view of a casting insert pipe according to various other embodiments of the present invention.

[0041] Hereinafter, various preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0042] The embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art. The following embodiments may be modified in various ways, and the scope of the present invention is not limited to the following embodiments. Rather, these embodiments are provided to more faithfully and completely explain the present disclosure and to fully convey the spirit of the present invention to those skilled in the art. In addition, the thickness and size of each layer in the drawings are exaggerated for convenience and clarity of explanation.

[0043] Hereinafter, embodiments of the present invention will be described with reference to drawings schematically illustrating ideal embodiments of the present invention. In the drawings, variations in the shapes depicted may be expected, for example, depending on manufacturing techniques and / or tolerances. Therefore, embodiments of the present invention should not be construed as limited to the specific shapes of the regions depicted herein, but should include, for example, variations in shapes resulting from manufacturing processes.

[0044] FIG. 1 is a perspective view schematically showing a casting (1) into which a casting insert pipe (100) according to one embodiment of the present invention is inserted, and FIG. 2 is an enlarged view schematically showing an enlarged view of part "A" of FIG. 1. In addition, FIG. 3 is a perspective view schematically showing a casting insert pipe (100a) according to one embodiment of the present invention, and FIGS. 4 and 5 are cross-sectional views schematically showing a plane and a side surface of the casting insert pipe (100a) of FIG. 3. In addition, FIGS. 6 to 22 are cross-sectional views schematically showing a plane or a side surface of casting insert pipes (100b to 100q) according to other various embodiments of the present invention.

[0045] First, as illustrated in FIGS. 1 and 2, the casting insert pipe (100) of the present invention is a pipe inserted into a casting mold during casting of an insert casting (1) so as to form a fluid channel through which the fluid flows by connecting the inlet (1a) and the outlet (1b) in an insert casting (1) in which an inlet (1a) for introducing fluid is formed on one side and a discharge (1b) for discharging the fluid is formed on the other side, and may largely include a body portion (10) and a pressure distribution channel portion (20).

[0046] As shown in FIGS. 3 to 5, the body (10) of the casting insert pipe (100a) according to one embodiment of the present invention is formed of aluminum material, has a circular cross-section, and is formed to extend in the longitudinal direction, so that it can be formed into a pipe shape that is hollow overall.

[0047] In addition, the pressure distribution flow path (20) can be formed to extend in a kind of spiral flow path shape, which is formed to extend in a direction inclined at a predetermined inclination angle (a) based on the direction of extension of the body (10), in order to distribute the collision pressure of the molten metal (Molten metal) that flows in through the gate (G) of the casting mold and collides with the body (10) when casting the insert casting (1) in the left-right direction (the direction of extension of the body (10)) and increase the bonding strength between the body (10) and the solidified casting material of the molten metal.

[0048] For example, the pressure distribution flow path (20) may include a buried flow path (21) that is formed in a concave groove shape from the outer surface of the body (10) in a cross-section so that it can be formed in a form embedded in the body (10) and is formed to extend in a spiral shape inclined at a predetermined inclination angle (a) along at least a portion of the extending direction of the body (10).

[0049] The pressure distribution path section (20) including the embedded path section (21) can be formed to extend in a spiral shape that surrounds the outer surface of the body section (10), so as to be uniformly distributed over the entire area of ​​the outer surface of the body section (10).

[0050] Accordingly, when inserting the casting insert pipe (100a) into the casting mold, regardless of the direction in which the casting insert pipe (100a) is inserted, at least a portion of the flow path shape formed to extend spirally from the outer peripheral surface of the body portion (10) can always be formed to face the gate (G) of the casting mold, so that the insertion operation into the casting mold can be performed without directional alignment of the casting insert pipe (100a) (aligning the pressure distribution flow path portion (20) and the gate (G) to face each other).

[0051] Accordingly, as illustrated in FIG. 5, by inserting at least a portion of the pressure distribution flow path section (20) including the embedded flow path section (21) into the casting mold so as to face the gate (G) of the casting mold without directional alignment of the casting insert pipe (100a), the molten metal flowing into the casting mold through the gate (G) can be effectively distributed to the left and right of the body part (10) along the embedded flow path section (21) formed to extend spirally in the extension direction (longitudinal direction) of the body part (10), as illustrated in FIG. 4.

[0052] In addition, the embedded flow path (21) formed to extend in a spiral shape along the extension direction of the body part (10) can induce the molten metal flowing into the casting mold through the gate (G) to spread evenly and quickly throughout the entire body part (10), and after the molten metal solidifies, it can also serve as a bonding part that increases the bonding strength between the body part (10) and the cast material in which the molten metal has solidified.

[0053] In this way, the molten metal flowing into the casting mold through the gate (G) by the pressure dispersing passage section (20) including the embedded passage section (21) is induced to be uniformly distributed to the left and right of the body section (10), thereby reducing the collision pressure of the molten metal colliding with the body section (10) by distributing it to the left and right of the body section (10).

[0054] Therefore, when casting an insert casting (1), the collision pressure of the molten metal received by the body part (10) inside the casting mold is reduced, thereby effectively preventing the soft body part (10) made of aluminum material from being deformed or damaged by the high pressure of the molten metal.

[0055] In addition, the embedded flow path (21) formed in a spiral shape on the outer surface of the body part (10) can have a structure in which, by forming a rough shape on the outer surface of the body part (10), when casting the insert casting (1), the molten metal flowing into the interior of the rough shape causes the cast material in which the molten metal is solidified to be combined with the outer surface of the body part (10) into a rough structure, so that the body part (10) can hold a part of the cast material inserted into the rough groove.

[0056] Therefore, the casting insert pipe (100a) can have the effect of improving the bonding strength between the body part (10) and the casting material by the uneven structure formed on the outer surface of the body part (10).

[0057] In the above-described embodiment, the gate (G) of the casting mold is exemplified as being located in the middle portion of the casting insert pipe (100a) based on the extension direction of the body part (10), but is not necessarily limited to FIG. 4, and may be formed in a variety of shapes depending on the diameter or length of the casting insert pipe (100a), such as being formed on one end side of either end of the casting insert pipe (100a), or being formed as a pair at both ends of the casting insert pipe (100a).

[0058] In addition, in addition to the above-described embodiment, when casting an insert casting (1), the body (10) and the pressure dispersing passage (20) can be formed in a wide variety of shapes so as to disperse the collision pressure of the molten metal that flows through the gate (G) of the casting mold and collides with the body (10) and increase the bonding strength between the body (10) and the cast material in which the molten metal has solidified.

[0059] For example, as illustrated in FIG. 6, the body part (10) of the casting insert pipe (100b) according to another embodiment of the present invention may be formed into a pipe shape having an oval-shaped cross-section and extending in the longitudinal direction, thereby having a hollow shape overall.

[0060] More specifically, even when the body part (10) is formed to have an elliptical cross-section, the pressure distribution flow path part (20) including the embedded flow path part (21) can be formed to extend spirally along the outer surface of the body part (10) so as to pass through the long-axis end (vertex) and the short-axis end (vertex) of the body part (10).

[0061] Accordingly, as illustrated in FIG. 6, the molten metal flowing into the casting mold through the gate (G) is distributed to the left and right of the body part (10) along the embedded flow path part (21) formed in a spiral shape on the outer surface of the body part (10), and can also be induced to be distributed up and down the body part (10) along the outer surface on the long axis side of the body part (10).

[0062] In this way, the molten metal distributed to the left and right of the body part (10) by the pressure dispersing passage part (20) including the embedded passage part (21) is induced to be distributed up and down the body part (10) having an oval-shaped cross-section, thereby dispersing the collision pressure of the molten metal colliding with the body part (10) to the top, bottom, left and right of the body part (10) and thereby further reducing the collision pressure.

[0063] Therefore, when casting an insert casting (1), the collision pressure of the molten metal received by the body part (10) inside the casting mold is reduced as much as possible, thereby more effectively preventing the soft body part (10) made of aluminum material from being deformed or damaged by the high pressure of the molten metal.

[0064] As illustrated in FIG. 7, in a casting insert pipe (100c) according to another embodiment of the present invention, a buried flow path (21) forming a pressure distribution flow path (20) may be formed so that the width thereof gradually increases linearly from a first width (W1) to a second width (W2) as it goes from the outer peripheral surface of the body (10) to the depth direction of the buried flow path (21), so that both opposing sides may be formed to be inclined as reverse gradient surfaces.

[0065] Accordingly, the embedded flow path (21) formed in a spiral shape on the outer surface of the body part (10) forms a protruding shape having a reverse gradient shape on the outer surface of the body part (10), so that when casting the insert casting (1), the molten metal flowing into the interior of the protruding shape having a reverse gradient shape combines the cast material in which the molten metal is solidified with the outer surface of the body part (10) into a protruding structure having a reverse gradient shape, so that the body part (10) can have a structure in which a part of the cast material inserted into the protruding groove portion is more strongly held.

[0066] Therefore, the effect of further improving the bonding strength between the body part (10) of the casting insert pipe (100c) and the casting material can be achieved by the uneven structure of the reverse gradient shape formed on the outer surface of the body part (10).

[0067] In this way, the shape of the embedded flow path (21) formed to form a protruding shape having a reverse gradient shape on the outer surface of the body portion (10) is not necessarily limited to FIG. 7, and may be formed on the outer surface of the body portion (10) to form a protruding shape having a wide variety of reverse gradient shapes.

[0068] For example, as illustrated in FIG. 8, the buried flow path (21) forming the pressure distribution flow path (20) in the casting insert pipe (100d) according to another embodiment of the present invention may be formed with a cross-section that is circular or elliptical so that the width thereof becomes wider nonlinearly and then narrower again as it goes from the outer peripheral surface of the body (10) toward the depth of the buried flow path (21).

[0069] More specifically, the buried guage portion (21) is formed so that the width of the inlet portion on the outer peripheral surface side of the body portion (10) gradually increases from a first width (W1) toward the middle portion in the depth direction to a second width (W2) larger than the first width (W1), and then gradually narrows toward the bottom portion, so that the cross-section thereof can be formed in a circular or oval shape.

[0070] In addition, as illustrated in FIG. 9, the buried flow path part (21) forming the pressure distribution flow path part (20) in the casting insert pipe (100e) according to another embodiment of the present invention may be formed so that the width thereof gradually increases from the outer peripheral surface of the body part (10) toward the depth of the buried flow path part (21), so that the space between the two opposing sides may be formed so that the width gradually increases from a first width (W1) to a second width (W2) wider than the first width (W1).

[0071] In this way, the embedded flow path (21) formed on the outer surface of the body (10) can be formed in a rough shape having a wide variety of reverse gradient shapes.

[0072] In addition, as illustrated in FIG. 10, the pressure distribution flow path (20) of the casting insert pipe (100f) according to another embodiment of the present invention may include a protruding flow path (22) formed in a hook shape with a cross section protruding from the outer peripheral surface of the body (10) so as to be formed in a protruding shape on the body (10) and formed to extend in a spiral shape along at least a part of the extending direction of the body (10).

[0073] The pressure distribution path section (20) including the protruding path section (22) can be formed to extend in a spiral shape that surrounds the outer surface of the body section (10), so as to be uniformly distributed over the entire area of ​​the outer surface of the body section (10).

[0074] Accordingly, when inserting the casting insert pipe (100f) into the casting mold, regardless of the direction in which the casting insert pipe (100f) is inserted, at least a portion of the flow path shape formed to extend spirally from the outer peripheral surface of the body part (10) can always be formed to face the gate (G) of the casting mold, so that the insertion operation into the casting mold can be performed without directional alignment of the casting insert pipe (100f) (aligning the pressure distribution flow path part (20) and the gate (G) to face each other).

[0075] Accordingly, even without directional alignment of the casting insert pipe (100f), at least a portion of the pressure distribution passage section (20) including the protruding passage section (22) is inserted into the casting mold so as to face the gate (G) of the casting mold, so that the molten metal flowing into the casting mold through the gate (G) can be effectively distributed to the left and right of the body section (10) along the protruding passage section (22) formed to extend spirally in the extension direction (longitudinal direction) of the body section (10). At this time, the protruding passage section (22) having a hook-shaped cross-section can also serve as a reinforcing rib, thereby having the effect of increasing the rigidity of the body section (10) itself.

[0076] In addition, as illustrated in FIG. 11, the pressure distribution channel section (20) of the casting insert pipe (100g) according to another embodiment of the present invention may be a buried channel section (21) formed by hairline processing using a metal brush so that it can be formed in a channel shape of a fine pattern shape that is concavely formed in a groove shape on the outer surface of the body section (10).

[0077] In this way, by forming the pressure distribution channel section (20) into a micro-patterned embedded channel section (21) using hairline processing, a channel shape having micro-patterns of various shapes can be implemented, thereby maintaining the function of dispersing the impact pressure and increasing the bonding strength with the casting material, while having the effect of being easily processed through post-processing.

[0078] In addition, in the above-described embodiment, hairline processing is exemplified as being performed by a metal brush, but it is not necessarily limited to this, and any type of tool capable of performing hairline processing may be applied.

[0079] As illustrated in FIG. 12, a casting insert pipe (100h) according to another embodiment of the present invention may further include a reinforcing portion (30) that protrudes from the inner circumferential surface of the body portion (10) and extends along the extending direction of the body portion (10) so as to increase the strength of the body portion (10) itself, thereby preventing the body portion (10) from being deformed by the collision pressure of the molten metal that enters through the gate (G) of the casting mold and collides with the body portion (10) when casting an insert casting product (1).

[0080] Such reinforcing member (30) can be formed in a variety of shapes inside the body member (10).

[0081] For example, as illustrated in FIG. 12, the reinforcing member (30) may include a vertical rib (31) formed to extend from the upper end to the lower end of the inner surface of the body member (10).

[0082] In addition, as in the casting insert pipe (100i) according to another embodiment of the present invention illustrated in FIG. 13, the reinforcing member (30) may further include a horizontal rib (32) that extends from one end of the inner surface of the body part (10) to the other end so as to be able to vertically intersect with the vertical rib (31), thereby reinforcing the interior of the body part (10) in a cross shape.

[0083] In this way, the vertical rib (31) and horizontal rib (32) of the reinforcing member (30) can be formed at a position corresponding to the pressure distribution channel section (20) in which at least a portion is formed in a spiral shape, so as to support the impact pressure received by the pressure distribution channel section (20) by the molten metal.

[0084] In addition, as in the casting insert pipe (100j) according to another embodiment of the present invention illustrated in FIG. 14, the reinforcing portion (30) may include a plurality of protruding ribs (33) that are formed to protrude from the inner surface of the body portion (10) at a predetermined height and are radially arranged at equal angles based on the central axis of the body portion (10).

[0085] In this way, the casting insert pipes (100h, 100i, 100j) according to further embodiments of the present invention further include a reinforcing member (30) formed in the form of a reinforcing rib inside the body part (10) to reinforce the rigidity of the body part (10) itself, so that when casting an insert casting (1), the soft body part (10) made of aluminum can be effectively prevented from being deformed or damaged by the high pressure of the molten metal that the body part (10) receives inside the casting mold.

[0086] In the embodiments of the casting insert pipes (100a to 100g) including the body portion (10) and the pressure distribution passage portion (20) and the casting insert pipes (100h to 100j) including the body portion (10), the pressure distribution passage portion (20) and the reinforcement portion (30) described above, it may be preferable that the body portion (10) and the reinforcement portion (30) are formed into a continuous body having a cross-section of a constant shape integrally by extrusion molding.

[0087] At this time, the pressure distribution path section (20) formed in a spiral shape on the outer surface of the body section (10) can be formed in the extrusion molding process by rotating the extrusion die during extrusion molding, or can be formed in a continuous molding process by using a separate rotating processing body (such as cutting processing using a rotating cutting tool or forging processing using a screw rod) at the exit side of the extrusion molding device.

[0088] In this way, by forming the casting insert pipes (100a to 100j) by extrusion molding, it is possible to have the effect of facilitating mass production at a lower cost.

[0089] However, the processing method of the casting insert pipes (100a to 100j) is not necessarily limited to extrusion molding, and any processing method capable of implementing the above-described shapes may be used.

[0090] In addition, in the above-described embodiments, the body part (10) is formed of aluminum material, but is not necessarily limited to aluminum material, and any material that can be inserted as an insert when casting an insert casting product (1), such as copper material, magnesium material, or stainless steel material, can be used.

[0091] In addition, in the above-described embodiments, the body part (10) is formed of a single material, but it may also be possible to increase the rigidity of the body part (10) itself by forming the body part (10) of a different material.

[0092] For example, as in the casting insert pipe (100k) according to another embodiment of the present invention illustrated in FIG. 15, the body part (10) may be formed by double extrusion molding by a first extruder supplying the first material and a second extruder supplying the second material so that a first body (11) formed of a first material and a pressure distribution channel part (20) formed on the outer circumference thereof to surround the first body (11) and a second body (12) formed of a second material different from the first material are integrally laminated.

[0093] At this time, the first body (11) may be formed of the first material made of aluminum, and the second body (12) may be formed of the second material made of copper. In addition, conversely, the first body (11) may be formed of the first material made of copper, and the second body (12) may be formed of the second material made of aluminum. Here, the pressure distribution path portion (20) may be formed in the second body (12), and although not shown, when a reinforcing portion (30) is further included, the reinforcing portion (30) may be extruded and formed integrally with the first body (11).

[0094] In addition, the first material and the second material are formed by a combination of aluminum and copper, but are not necessarily limited thereto, and may be formed by a combination of at least two materials selected from among all materials that can be inserted as inserts when casting the insert casting (1).

[0095] In addition, the casting insert pipe (100k) formed of different materials is, as an example, formed by double extrusion molding, but is not necessarily limited thereto, and any process capable of implementing a pipe of different materials, such as clad extrusion, clad rolling, or a method of pressing a pipe of the second material into the inside of a pipe of the first material, may be used.

[0096] In addition, the casting insert pipes (100a to 100k) of the above-described embodiments have been exemplified as having a straight pipe shape in which the body portion (10) extends in the longitudinal direction and includes only a straight section extending in a straight shape, but the present invention is not necessarily limited thereto, and the body portion (10), like the casting insert pipe (100l) according to another embodiment of the present invention illustrated in FIG. 16, may also have a pipe shape extending in a zigzag shape, including a straight section (10-1) extending in a straight shape and a curved section (10-2) extending in a curved shape. In addition to the embodiment illustrated in FIG. 16, various pipe shapes formed by a combination of a straight section (10-1) and a curved section (10-2) may be applied.

[0097] In this way, when the body part (10) is a pipe shape that extends in a zigzag shape with a combination of straight sections (10-1) and curved sections (10-2), it goes without saying that the pressure distribution path section (20) and the reinforcement section (30) are also formed along the extension direction of the body part (10).

[0098] In addition, the casting insert pipes (100a to 100l) of the above-described embodiments are formed in such a way that the pressure distribution path section (20) extends from the outer peripheral surface of the body section (10) as a single spiral path, but are not necessarily limited thereto and may be formed in a wide variety of shapes.

[0099] For example, as in the casting insert pipe (100 m) according to another embodiment of the present invention illustrated in FIG. 17, the pressure distribution flow path (20) may include a first spiral flow path (20-1) formed to extend in a spiral manner at a first inclination angle (a1) with respect to the extending direction of the body part (10), and a second spiral flow path (20-2) formed to extend in a spiral manner at a second inclination angle (a2) that is inclined in a direction opposite to the first inclination angle (a1) with respect to the extending direction of the body part (10) so as to intersect the first spiral flow path (20-1) in an X shape on the outer peripheral surface of the body part (10).

[0100] In this way, the pressure distribution path section (20) is formed as a double spiral path (20-1, 20-2) that intersects in an X shape on the outer surface of the body section (10), so that the molten metal flowing into the casting mold through the gate (G) can be induced to spread more evenly and quickly throughout the entire section of the body section (10), and after the molten metal solidifies, it can also serve as a bonding section that further increases the bonding strength between the body section (10) and the casting material in which the molten metal has solidified.

[0101] In addition, as in the casting insert pipe (100n) according to another embodiment of the present invention illustrated in FIG. 18 and the casting insert pipe (100o) according to another embodiment of the present invention illustrated in FIG. 19, the pressure distribution flow path part (20) may be formed such that the width of the flow path shape gradually increases from a portion corresponding to the gate (G) of the casting mold toward a portion further away from the gate (G), or the pitch of the flow path shape formed to extend in a spiral shape from a portion corresponding to the gate (G) of the casting mold toward a portion further away from the gate (G) may gradually increase.

[0102] In this way, in a section of the body part (10) that is far from the gate (G) of the casting mold where stagnation may occur in the flow of the molten metal, the width of the pressure distribution channel part (20) is formed to gradually widen from the first width (W1) to the second width (W2), or the pitch of the pressure distribution channel part (20) is formed to gradually increase from the first pitch (P1) to the second pitch (P2), thereby lowering the resistance that the molten metal may receive in the channel shape, thereby inducing the molten metal to be quickly distributed left and right without stagnation even in a section that is far from the gate (G), thereby effectively reducing the collision pressure of the molten metal throughout the entire section of the body part (10).

[0103] In addition, as in the casting insert pipe (100p) according to another embodiment of the present invention illustrated in FIG. 20, an auxiliary flow path (40) may be further included to prevent stagnation in the flow of the molten metal even in a section far from the gate (G) of the casting mold.

[0104] For example, the auxiliary flow path (40) may be formed to extend in a straight line parallel to the extension direction of the body part (10) in at least a portion of the extension direction of the body part (10) so as to intersect with the pressure distribution flow path (20) formed to extend in a spiral shape from the outer surface of the body part (10).

[0105] A plurality of auxiliary guiding sections (40) may be formed along the circumferential direction of the body section (10) on the outer surface of the body section (10), and when a plurality of sections are formed, it may be preferable that the plurality of sections be radially arranged at equal angles based on the central axis of the body section (10).

[0106] In addition, as in the casting insert pipe (100q) according to another embodiment of the present invention illustrated in FIG. 21, the auxiliary flow path (40) may not be formed in the entire section along the extending direction of the body section (10), but may be formed in at least a portion of the section along the extending direction of the body section (10), but may be formed in a section excluding a section corresponding to a portion where the gate (G) of the casting mold is formed among the sections of the body section (10).

[0107] In this way, in a section where stagnation may occur in the flow of the molten metal in the body section (10) and far from the gate (G) of the casting mold, the resistance that the molten metal may receive is lowered through the flow path shape of the auxiliary flow path section (40), thereby inducing the molten metal to be quickly distributed left and right without stagnation even in a section far from the gate (G), thereby effectively reducing the collision pressure of the molten metal in the entire section of the body section (10).

[0108] In addition, in the above-described embodiments, the pressure distribution channel section (20) is formed to be distributed over the entire outer surface of the body section (10), but it is not necessarily limited thereto, and, like the casting insert pipe (100r) according to another embodiment of the present invention illustrated in FIG. 22, the pressure distribution channel section (20) may be formed only in a certain section along the extending direction of the body section (10) so that a section in which the pressure distribution channel section (20) is not formed can be formed in the body section (10).

[0109] For example, it may be possible for the pressure distribution path (20) to be formed not in the entire section along the extension direction of the body section (10), but in at least a portion of the section along the extension direction of the body section (10), but to be formed in a section of the body section (10) excluding a section corresponding to a portion where the gate (G) of the casting mold is formed.

[0110] In this way, by forming the pressure distribution flow path (20) only in a section where stagnation may occur in the flow of the molten metal far from the gate (G) of the casting mold in the body section (10), the resistance that the molten metal may receive is lowered through the flow path shape of the pressure distribution flow path (20), thereby inducing the molten metal to be quickly distributed left and right without stagnation even in a section far from the gate (G), thereby effectively reducing the collision pressure of the molten metal in the entire section of the body section (10).

[0111] Conversely, although not shown, depending on the size or shape of the insert casting (1) cast in the casting mold or the pressure of the molten metal flowing in through the gate (G) of the casting mold, the pressure distribution flow path (20) may be formed only in a section corresponding to the portion where the gate (G) of the casting mold is formed in the body portion (10), so that the collision pressure of the molten metal flowing in through the gate (G) may be quickly distributed left and right in the section where it collides, and the flow of the molten metal may be slowed down in the section far from the gate (G) so that the molten metal may sufficiently fill the cavity of the casting mold.

[0112] Accordingly, according to the casting insert pipe (100) according to various embodiments of the present invention, a pressure distribution channel section (20) is formed on the outer circumferential surface of the casting insert pipe (100) so as to extend in a spiral channel shape along the longitudinal direction of the body section (10), so that the molten metal that flows in through the gate (G) of the casting mold and collides with the body section (10) is distributed left and right through the pressure distribution channel section (20), thereby reducing the collision pressure of the molten metal, thereby preventing the casting insert pipe (100) from being deformed by the collision pressure of the molten metal through the gate (G).

[0113] In addition, since the pressure dispersing passage part (20) is formed to extend in a spiral shape to surround the outer surface of the body part (10), when the casting insert pipe (100) is inserted into the casting mold, at least a portion of the pressure dispersing passage part (20) is always inserted adjacent to or opposite the gate (G) of the casting mold, regardless of the direction in which the casting insert pipe (100) is inserted, the insertion work of the casting insert pipe (100) into the casting mold is possible without directional alignment of the casting insert pipe (100) (no need for directional alignment of the insertion to a specific position so that the pressure injection passage part and the gate face each other), thereby shortening the insertion work time of the casting insert pipe (100), and preventing the effect of the pressure dispersing passage (20) on the molten metal collision pressure from being reduced due to the misalignment of the pressure dispersing passage part (20) and the gate (G).

[0114] In addition, in the body part (10) of the casting insert pipe (100) in a section far from the gate (G) of the casting mold where stagnation may occur in the flow of the molten metal, an auxiliary flow path (40) extending in a straight line parallel to the longitudinal direction of the body part (10) is formed to intersect with a spiral pressure distribution flow path (20), thereby inducing the molten metal to be quickly distributed left and right without stagnation even in a section far from the gate (G) through the auxiliary flow path (40), thereby effectively reducing the collision pressure of the molten metal throughout the entire section of the body part (10), thereby more effectively preventing the casting insert pipe (100) from being deformed by the collision pressure of the molten metal through the gate (G).

[0115] In addition, the pressure distribution flow path (20) formed in a shape that wraps around the outer surface of the body part (10) in a spiral shape is formed in a protruding shape such as a buried flow path (21) or a protruding flow path (22) on the outer surface of the body part (10), thereby improving the bonding force between the molten metal and the body part (10) by the protruding structure, and by forming various types of reverse gradient shapes in the protruding structure, the bonding force between the molten metal and the body part (10) can be further improved.

[0116] In addition, by forming a rib-shaped reinforcing member (30) extending along the length direction of the body portion (10) inside the casting insert pipe (100) or by double extrusion molding the casting insert pipe (100) with different materials to increase the rigidity of the pipe itself, the casting insert pipe (100) can be more effectively prevented from being deformed by the impact pressure of the molten metal during casting of the insert casting product (1).

[0117] Therefore, when casting an insert casting product (1), a structure capable of dispersing the collision pressure of the molten metal that flows in through the gate (G) of the casting mold and collides with the casting insert pipe (100), a structure capable of increasing the strength of the casting insert pipe (100) itself, and a structure capable of improving the bonding strength between the molten metal and the casting insert pipe (100) are formed on their own, so that when a cooling module in which a cooling pipe is inserted to dissipate heat generated from a heat-generating component is manufactured by die casting, not only is deformation or breakage of the pipe caused by the pressure of the molten metal injected into the casting mold prevented without a separate additional process, but also the bonding strength between the molten metal and the pipe is increased, thereby shortening the overall process by omitting the process of inserting and removing foreign substances inside the pipe, thereby reducing the cost, and improving the quality of the insert casting product (1) by reducing the occurrence of defects due to pipe deformation can be implemented.

[0118] While the present invention has been described with reference to the embodiments illustrated in the drawings, these are merely exemplary, and those skilled in the art will appreciate that various modifications and equivalent alternative embodiments are possible. Therefore, the true scope of technical protection of the present invention should be determined by the technical spirit of the appended claims.

Claims

1. A body portion formed in a pipe shape having a circular or oval cross-section and having a hollow portion including at least one of a straight section and a curved section, and capable of being inserted into a casting mold; and When casting an insert casting, in order to disperse the collision pressure of the molten metal that flows through the gate of the casting mold and collides with the body part, a pressure distribution channel formed to extend in an inclined direction at a predetermined inclination angle based on the extension direction of the body part on at least a portion of the outer peripheral surface of the body part; Casting insert pipe, including:

2. In paragraph 1, The above pressure distribution path section is, A buried channel portion having a cross-section formed in a concave groove shape from the outer surface of the body portion so as to be formed in a form embedded in the body portion, and formed to extend in a spiral shape inclined at a predetermined inclination angle along at least a part of the extension direction of the body portion; Casting insert pipe, including:

3. In paragraph 2, The above-mentioned buried euro portion is, A casting insert pipe in which the opposite sides are formed to be inclined in a reverse gradient plane so that the width thereof gradually increases from the outer surface of the body portion toward the depth of the embedded channel portion.

4. In paragraph 2, The above-mentioned buried euro portion is, A casting insert pipe, which is formed so that the width thereof gradually increases from the outer circumferential surface of the body portion toward the depth of the embedded channel portion, and in which the space between the two opposing sides is formed so as to gradually increase from a first width to a second width wider than the first width.

5. In paragraph 2, The above-mentioned buried euro portion is, A casting insert pipe having a cross-section formed in a circular or oval shape so that the width thereof gradually widens and then narrows again as it moves from the outer surface of the body portion toward the depth of the embedded channel portion.

6. In paragraph 1, The above pressure distribution path section is, A casting insert pipe formed by hairline processing so that it can be formed as a buried channel portion having a micro-pattern shape formed in a concave groove shape on the outer surface along at least a part of the extension direction of the body portion.

7. In paragraph 1, The above pressure distribution path section is, A protruding channel portion formed in a hook shape protruding from the outer surface of the body portion in a cross-section so as to be formed in a protruding shape on the body portion, and formed to extend in a spiral shape inclined at a predetermined inclination angle along at least a part of the extending direction of the body portion; Casting insert pipe, including:

8. In paragraph 1, The above pressure distribution path section is, A first spiral path formed to extend in a spiral shape at a first inclination angle based on the extension direction of the body portion; Casting insert pipe, including:

9. In paragraph 8, The above pressure distribution path section is, A second spiral path formed to extend helically at a second inclination angle that is inclined in a direction opposite to the first inclination angle based on the extension direction of the body part so as to intersect with the first spiral path on the outer surface of the body part; Casting insert pipe, further comprising:

10. In paragraph 1, The above pressure distribution path section is, A casting insert pipe, wherein at least a portion of a section of a cylindrical shape formed to extend spirally from the outer surface of the body portion is formed to face the gate of the casting mold.

11. In paragraph 10, The above pressure distribution path section is, A casting insert pipe formed so that the width of the euro shape gradually increases as it moves away from the gate in a portion corresponding to the gate of the casting mold.

12. In paragraph 10, The above pressure distribution path section is, A casting insert pipe, which is formed so that the pitch of the euro shape, which is formed to extend in a spiral shape in a portion corresponding to the gate of the casting mold, gradually increases as it moves away from the gate.

13. In paragraph 1, The above pressure distribution path section is, A casting insert pipe formed only in a certain section along the extension direction of the body section so that a section in which the pressure distribution path section is not formed can be formed in the body section.

14. In paragraph 1, An auxiliary flow path formed to extend in a straight line parallel to the extension direction of the body part in at least a portion of the extension direction of the body part so as to intersect with the pressure distribution flow path formed to extend in a spiral shape from the outer surface of the body part; Casting insert pipe, further comprising:

15. In paragraph 14, The above auxiliary euro part is, A casting insert pipe formed in at least a portion of the body portion along the extension direction, excluding a portion corresponding to a portion where the gate of the casting mold is formed among the sections of the body portion.

16. In paragraph 1, The above body part, a first body formed of a first material; and A second body formed to surround the first body and form the pressure distribution path portion, and formed of a second material different from the first material; Casting insert pipe, including:

17. In paragraph 1, A reinforcing member formed to protrude from the inner surface of the body part and extend long along the extension direction of the body part so as to increase the strength of the body part; Casting insert pipe, further comprising:

18. In paragraph 17, The above reinforcement part, A vertical rib formed to extend from the upper end to the lower end of the inner surface of the body portion; Casting insert pipe, including:

19. In paragraph 18, The above reinforcement part, A horizontal rib formed to extend from one end of the inner surface of the body to the other end so as to vertically intersect with the vertical rib; Casting insert pipe, further comprising:

20. In paragraph 17, The above reinforcement part, A plurality of protruding ribs formed to protrude from the inner surface of the body portion at a predetermined height and arranged radially at equal angles based on the central axis of the body portion; Casting insert pipe, including:

Images