Welding device for heat exchange panel

Abstract

The present invention relates to a welding device for a heat exchange panel, wherein the welding device comprises: a dot welding unit having a plurality of pressing dots for applying pressure to two heat dissipation panels from the outside in a thickness direction and melting and bonding the panels in contact with each other through electrical resistance heat; a welder roller unit for fitting and disposing the dot welding unit in the circumferential direction and guiding the rotation of the dot welding unit; and an electrode unit electrically connected to the welder roller unit and supplying a predetermined current to the dot welding unit, so that it is possible to shorten the welding process time and improve reliability by precise welding.

Description

Welding device for heat exchange panels

[0001] The present invention relates to a welding apparatus for a heat exchange panel, and more specifically, to a welding apparatus for a heat exchange panel capable of rapidly and stably welding and joining two heat exchange panels provided in a panel type facing each other.

[0002]

[0003] Generally, welding devices are used as tools to join two metal objects. Various types of welding devices are used depending on their type and joining method.

[0004] Brazing and laser welding are welding methods used to join two metal objects. However, brazing requires a significant amount of work time because the welding process takes a long time to complete. Additionally, laser welding has the problem that it is difficult to guarantee high quality because the weld area of ​​the workpiece may be damaged or subjected to severe stress.

[0005] Meanwhile, other welding methods include spot welding and seam welding. Spot welding and seam welding are types of resistance welding.

[0006] Spot welding is a method of heating and fusing a joint using resistance heat generated by Joule's law when an electric current is applied while applying pressure to the materials to be welded placed between electrodes. Additionally, seam welding is a method of continuously repeating the above spot welding while rotating the electrodes while applying pressure to the workpiece placed between disc-shaped electrodes.

[0007] Spot welding is an advantageous method when welding workpieces in random and individual patterns. However, since spot welding is equipped with only a single welding tip, continuous use is difficult, and it has the disadvantage of a very short lifecycle due to repeated use.

[0008] On the other hand, seam welding is an advantageous method when continuously welding workpieces in a straight line. Therefore, seam welding is primarily used when welding the edges of workpieces that are formed in a straight line, provided the welding target area is predetermined.

[0009] As mentioned above, spot welding and seam welding differ not only in their welding methods but also in their optimal welding locations for the workpieces, so the two welding methods cannot be used simultaneously in the current industrial sector. Consequently, there is a problem of delayed welding time in that welding work using one welding method must be performed after welding work using the other method is completed.

[0010]

[0011] The present invention was devised to solve the above-mentioned technical problem, and aims to provide a welding device for heat exchange panels that can weld two heat dissipation panels quickly and precisely by combining the advantages of the spot welding method and the seam welding method.

[0012] In addition, another objective of the present invention is to provide a welding device for a heat exchange panel capable of continuously welding a plurality of heat dissipation panels that are the workpieces to be welded.

[0013] The technical problems of the present invention are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art from the description below.

[0014]

[0015] A welding device for a heat exchange panel according to one embodiment of the present invention is a welding device for a heat exchange panel that forms a refrigerant flow space of a predetermined thickness inside and joins two heat dissipation panels formed with a plurality of rigid reinforcing members protruding in mutually facing directions in the refrigerant flow space, wherein the device comprises a dot welding part having a plurality of pressure dots formed thereon to melt and bond the two heat dissipation panels by applying pressure to each of the two heat dissipation panels from the outer side in the thickness direction of each of the two heat dissipation panels and bringing them into contact with each other through electrical resistance heat, a welder roller part that guides the rotation of the dot welding part by fitting the dot welding part in a circumferential direction, and an electrode part that is electrically connected to the welder roller part and supplies a predetermined current to the dot welding part, wherein the dot welding part and the welder roller part are provided with a conductive material to which current is applied by the electrode part.

[0016] Here, the dot welding portion may be formed in a ring shape in which the inner surface is fitted and coupled to the outer surface of the welder roller portion, and the plurality of pressure dots may be formed to protrude radially and sharply on the outer surface.

[0017] In addition, the plurality of pressure dots can be formed continuously in an annular shape along the outer surface of the dot welding portion.

[0018] Additionally, the electrode portion includes a copper plate disposed on the outer side of the welder roller portion and an electrode pipe that is electrically connected to the copper plate and has its outer surface electrically contacted to the inner surface of the welder roller portion, and a conductive oil may be applied between the welder roller portion and the electrode pipe.

[0019] In addition, the welder roller part is provided to be rotatable in place and may further include a conveyor part that moves the two heat dissipation panels horizontally before welding.

[0020] In addition, the conveyor section may be provided with a conveyor belt that rotates and conveys based on a first rotation axis on one side in the longitudinal direction and a second rotation axis on the other side in the longitudinal direction.

[0021] In addition, the conveyor belt is formed with a heat dissipation panel installation groove that is open in the vertical direction for installing the two heat dissipation panels, and each of the two heat dissipation panels can be fixed by a plurality of panel fixing clips at one end in the longitudinal direction and the other end in the longitudinal direction while inserted into the heat dissipation panel installation groove.

[0022] Additionally, the welder roller section includes an upper roller positioned above the upper belt of the conveyor belt and a lower roller positioned between the upper belt and the lower belt of the conveyor belt, wherein the pressure dot of the dot welding section provided on the upper roller presses the heat dissipation panel from the top to the bottom, and the pressure dot of the dot welding section provided on the lower roller presses the heat dissipation panel from the bottom to the top.

[0023] Additionally, it further includes a one-sided supporter portion that supports the rotation of one end of the upper roller and the lower roller, and a other-sided supporter portion that supports the rotation of the other end of the upper roller and the lower roller, and the electrode portion may be installed via either the one-sided supporter portion or the other-sided supporter portion.

[0024] In addition, belt catch gears are installed at both left and right ends of the lower roller to engage with and move the conveyor belt, and the belt catch gears can rotate by engaging with a belt catch groove formed in the conveying direction of the conveyor belt through gear teeth formed along the outer edge.

[0025] In addition, it may further include a driving gear unit provided in either the one-sided supporter unit or the other-sided support unit, which rotates by a predetermined driving force to rotate the belt catch gear.

[0026] Additionally, it may further include a mounting plate fixed to both left and right ends of the upper roller and mediating the installation of the upper roller with respect to the one-sided supporter and the other-sided supporter.

[0027] In addition, the mounting plate may be coupled to allow sliding movement in the vertical direction with respect to at least one surface of the one-sided supporter or the other-sided supporter.

[0028] In addition, at least one retainer roller may be provided at the lower end of the mounting plate to support the upper surfaces of both left and right ends of the upper belt of the conveyor belt.

[0029] In addition, when the plurality of rigidity reinforcing members formed on the two heat dissipation panels are arranged in rows in the length or width direction of the heat dissipation panels and the plurality of welder roller members are arranged in the movement direction of the conveyor part, the dot welding members may each be provided in a single number in the welder roller members corresponding to the row or column direction of the plurality of rigidity reinforcing members.

[0030] In addition, a plurality of the heat dissipation panels are arranged in the direction of movement of the conveyor section, and the heat dissipation panels can be sequentially welded by dot welding sections provided in the plurality of welder roller sections while being transported by the conveyor section.

[0031] In addition, a plurality of the heat dissipation panels are arranged in the conveyor section in the direction of movement of the conveyor section, and the dot welding section is arranged in each of the plurality of welder roller sections, and may be positioned at a location corresponding to the thermal direction corresponding to the transport direction of the heat dissipation panels.

[0032] In addition, the welder roller part is provided to be rotatable in place, and the two heat dissipation panels prior to welding are fixed horizontally to the moving panel, and may further include a panel moving part that moves the moving panel horizontally in the longitudinal or transverse direction.

[0033] Additionally, the panel moving part comprises a base part on which the welder roller part is installed, a pair of transfer rails spaced apart from each other in the width direction of the heat dissipation panel on the upper surface of the base part, and a pair of transfer frames that move horizontally in the length direction of the heat dissipation panel along the pair of transfer rails, and the moving panel can be moved horizontally in the width direction with respect to the upper bar of each of the pair of transfer frames.

[0034] Additionally, the panel moving unit may further include a first driving motor for moving the pair of transfer frames and a second driving motor for transferring the moving panel.

[0035] Additionally, the welder roller section includes an upper roller positioned on the upper side of the moving panel and a lower roller positioned on the lower side of the moving panel, wherein the pressure dot of the dot welding section provided on the upper roller presses the heat dissipation panel from the upper side to the lower side, and the pressure dot of the dot welding section provided on the lower roller presses the heat dissipation panel from the lower side to the upper side.

[0036] In addition, when the plurality of rigid reinforcing members formed on the two heat dissipation panels are arranged in rows in the length direction or width direction of the heat dissipation panels, the panel moving member can horizontally move the moving panel in the length direction to complete welding of one row in a straight line among the plurality of rigid reinforcing members, and then horizontally move it in the width direction to weld another row in a straight line adjacent to the one row in which welding was completed among the plurality of rigid reinforcing members in the same manner.

[0037]

[0038] A welding device for a heat exchange panel according to one embodiment of the present invention can achieve various effects such as the following.

[0039] First, by maximizing the advantages of spot welding and seam welding methods, welding time can be shortened and welding precision improved.

[0040] Second, since multiple heat dissipation panels can be welded continuously, product productivity can be improved.

[0041] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description in the claims.

[0042]

[0043] FIG. 1 is a perspective view showing a welding device for a heat exchange panel according to a first embodiment of the present invention, and

[0044] FIG. 2 is a perspective view showing a pair of heat dissipation panels that are the workpieces to be welded, and

[0045] FIG. 3 is an exploded perspective view of FIG. 2, and

[0046] FIG. 4 is an exploded perspective view of FIG. 1, and

[0047] FIG. 5 is a partial enlarged view of FIG. 1, and

[0048] FIGS. 6a and 6b are exploded perspective views of FIG. 5, and

[0049] FIG. 7 is a cross-sectional view taken along line A-A' of FIG. 1 and an enlarged view of a portion thereof, and

[0050] FIG. 8 is a cross-sectional perspective view taken along line A-A' of FIG. 1 and an enlarged view of the part thereof,

[0051] FIG. 9 is a perspective view showing a welding device for a heat exchange panel according to a second embodiment of the present invention, and

[0052] FIG. 10a is a cross-sectional view taken along the line B-B' of FIG. 9, and

[0053] FIG. 10b is a plan view of FIG. 9, and

[0054] FIG. 11 is a downward perspective view and an upward perspective view showing the welding process by the welder roller part of the configuration of FIG. 9, and

[0055] Figure 12 is a partial front view showing the welding of the heat dissipation panel in the configuration of Figure 9.

[0056]

[0057] <Explanation of Symbols>

[0058] 100: Welding device of the first embodiment 110: Conveyor part

[0059] 120: Welder roller section 130: Dot welding section

[0060] 135: Pressure dot 140: Support part

[0061] 150: Drive gear section 200: Heat dissipation panel

[0062] 210: 1st refrigerant path 220: 2nd refrigerant path

[0063] 230: Third refrigerant path 240: Rigidity reinforcement

[0064] 1000: Welding device of the second embodiment 1110: Moving panel

[0065] 1120: Welder roller section 1130: Dot welding section

[0066] 1135: Pressure dot 1140A, 1140B: Support part

[0067] 1150: Panel moving part 1160: Transfer rail

[0068] 1167: 1st drive motor 1170: Transfer frame

[0069] 1177: Second drive motor

[0070]

[0071] Hereinafter, embodiments of a welding device for a heat exchange panel according to the present invention will be described in detail with reference to the attached drawings.

[0072] It should be noted that when assigning reference numerals to the components of each drawing, the same components are assigned the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the embodiments of the present invention, if it is determined that a detailed description of related known components or functions would hinder understanding of the embodiments of the present invention, such detailed description is omitted.

[0073] In describing the components of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc., may be used. These terms are intended merely to distinguish the components from other components, and the essence, order, or sequence of the components is not limited by these terms. Furthermore, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0074]

[0075] FIG. 1 is a perspective view showing a welding device for a heat exchange panel according to a first embodiment of the present invention, FIG. 2 is a perspective view showing a pair of heat dissipation panels that are to be welded, and FIG. 3 is an exploded perspective view of FIG. 2.

[0076] A welding device (100) for a heat exchange panel according to the first embodiment of the present invention may include a first welding section (120A) and a second welding section (120B). The first welding section (120A) and the second welding section (120B) each include a dot welding section (130) and a welder roller section (121). Here, two heat dissipation panels (200) to be welded are provided to be sandwiched between the first welding section (120A) and the second welding section (120B), so that welding can be performed through the dot welding section (130) of the first welding section (120A) and the second welding section (120B).

[0077] A welding device (100) for a heat exchange panel according to the first embodiment of the present invention, configured as such, can be arranged in a series of units (see reference numerals '101~106' in FIG. 1).

[0078] Meanwhile, the welding device (100) for a heat exchange panel according to the first embodiment of the present invention may further include a conveyor unit (110) for transporting a heat dissipation panel (200) in a horizontal direction. The conveyor unit (110) may be provided with a conveyor belt (111) that rotates and transports based on a first rotation axis (115a) and a second rotation axis (115b).

[0079] A heat dissipation panel (200), which is a workpiece fixed to a conveyor belt (111), can be continuously supplied in a horizontal direction to a plurality of welding devices (101 to 106) for heat exchange panels.

[0080] Hereinafter, the welding device (100, 1000) for a heat exchange panel according to embodiments of the present invention takes two heat dissipation panels (200) as the workpieces to be welded, and first, the heat dissipation panels (200) will be described in detail.

[0081] As referenced in FIGS. 2 and 3, the two heat dissipation panels (200) may be plate-type heat exchange panels in which a refrigerant flow space (205) in which the filled refrigerant can undergo a phase change is formed in a sealed manner. Here, the two heat dissipation units (200) may include a one-sided heat conduction panel (200-1) forming one side in the thickness direction of the refrigerant flow space (205), and a other-sided heat conduction panel (200-2) forming the other side in the thickness direction of the refrigerant flow space (205).

[0082] The refrigerant flow space (205) can be formed in a sealed manner by joining a one-sided heat conduction panel (200-1) and a other-sided heat conduction panel (200-2), which are made of two metal panel members, along the edge end.

[0083] Here, one side heat conduction panel (200-1) and the other side heat conduction panel (200-2) may each include a first refrigerant passage (210), a plurality of second refrigerant passages (220), and a third refrigerant passage (230) partitioned by an inclined guide (215).

[0084] The first refrigerant passage (210) is located in the lower portion in the direction of gravity and may be a portion where liquid refrigerant is stored and, when heat is transferred from the outside, the liquid refrigerant undergoes a phase change into gaseous refrigerant.

[0085] The second refrigerant path (220) is formed to extend in a straight line at an angle from one side in the width direction (see reference numeral 201) to the other side in the width direction (see reference numeral 203) with respect to the first refrigerant path (210), thereby providing a flow path that allows the gaseous refrigerant to diffuse.

[0086] The third refrigerant flow path (230) is a portion defined by an inclined guide (215) formed to be recessed toward the refrigerant flow space (205), and can guide the liquid refrigerant, which has undergone a phase change through heat exchange with the outside air, to flow down toward the first refrigerant flow path (210).

[0087] Here, the inclined guide (215) defining the third refrigerant flow path (230) may be formed to be recessed toward the refrigerant flow space (205) from the outer side of each thickness direction of the one-sided heat conduction panel (200-1) and the other-sided heat conduction panel (200-2). By the inclined guide (215), the second refrigerant flow path (220) is partitioned and defined along the longitudinal direction of the one-sided heat conduction panel (200-1) and the other-sided heat conduction panel (200-2), and the aforementioned third refrigerant flow path (230) may be defined along the thickness direction of the one-sided heat conduction panel (200-1) and the other-sided heat conduction panel (200-2).

[0088] Meanwhile, a plurality of strength reinforcing members (240) may be formed on the inclined guide (215) or on the outer side thereof. The plurality of strength reinforcing members (240) are intended to reinforce the strength when joining one side heat conduction panel (200-1) and the other side heat conduction panel (200-2).

[0089] Here, a plurality of strength reinforcing members (240) are provided in the form of grooves with a certain point shape and can protrude from each other toward the refrigerant flow space (205). Specifically, the strength reinforcing member (240) formed on one side heat conduction panel (200-1) and the strength reinforcing member (240) formed on the other side heat conduction panel (200-2) come into contact with each other in the refrigerant flow space (205) and can be welded by a welding device (100, 1000) for a heat exchange panel according to the present invention.

[0090] Meanwhile, a plurality of strength reinforcing members (240) may be arranged in rows along the length and width directions of the heat dissipation panel (200). Here, the plurality of strength reinforcing members (240) may be formed at equal intervals along the length direction of the heat dissipation panel (200). Preferably, the plurality of strength reinforcing members (240) may each be formed to have a spacing distance corresponding to a plurality of pressure dots (135) described later.

[0091] FIG. 4 is an exploded perspective view of FIG. 1, FIG. 5 is a partial enlarged view of FIG. 1, FIG. 6a and FIG. 6b are exploded perspective views of FIG. 5, FIG. 7 is a cross-sectional view taken along line A-A' of FIG. 1 and a partial enlarged view thereof, FIG. 8 is a cutaway perspective view taken along line A-A' of FIG. 1 and a partial enlarged view thereof.

[0092] The dot welding portion (130) may be formed in the shape of a circular ring, as referenced in FIGS. 4 and 5. Here, the dot welding portion (130) may have a plurality of pressure dots (135) formed by pressing each of the two heat dissipation panels (200) from the outer side in the thickness direction of each of the two heat dissipation panels (200) and melting them together through electrical resistance heat.

[0093] More specifically, the dot welding section (130) can be fitted onto the outer surface of the welder roller section (120) which is provided in a cylindrical shape. Here, a plurality of pressure dots (135) can be formed to protrude radially and sharply from the outer surface of the dot welding section (130). Such pressure dots (135) can be formed continuously in an annular shape along the outer surface of the dot welding section (130). Therefore, when the dot welding section (130) is rotated by the rotation of the welder roller section (120), the plurality of pressure dots (135) can rotate and perform welding operations while acting as individual welding tips.

[0094] The welder roller section (120) can guide the rotation of the dot welding section (130) while the dot welding section (130) is fitted onto its outer surface. Specifically, the dot welding section (130) is formed in a ring shape and can be fixed by fitting it onto the outer surface of the welder roller section (120), which is provided in a cylindrical shape. Therefore, when the welder roller section (120) rotates, the dot welding section (130) can also rotate in conjunction.

[0095] The welder roller section (120) can be arranged in a left-right horizontal direction perpendicular to the conveying direction of the heat dissipation panel (200) being conveyed by the conveyor section (110). Here, the welder roller section (120) can be provided to rotate in place. Accordingly, when two heat dissipation panels (200) before welding are conveyed in a horizontal direction by the conveyor section (110), the pressure dot (135) of the dot welding section (130) fixed to the welder roller section (120) can apply pressure to each of the multiple strength reinforcing sections (240) formed on the heat dissipation panel (200) and perform welding joints in the longitudinal direction of the heat dissipation panel (200).

[0096] Meanwhile, as referenced in FIGS. 4 and 5, a heat dissipation panel installation groove (113) in which two heat dissipation panels (200) are installed may be formed in the conveyor belt (111) so as to be open in the vertical direction. Each of the two heat dissipation panels (200) may be fixed by a plurality of panel fixing clips (117) at one end in the longitudinal direction and the other end in the longitudinal direction while inserted into the heat dissipation panel installation groove (113).

[0097] Although not shown in the drawing, a plurality of panel fixing clips (117) are provided on the upper surface as well as the lower surface of the conveyor belt (111), so that two heat dissipation panels (200) can be stably fixed to maintain a state of mutual contact.

[0098] The welder roller section (120) may include an upper roller (120A) and a lower roller (120B), as referenced in FIGS. 4 and 5. The upper roller (120A) may be positioned above the upper belt (not shown in the drawing) of the conveyor belt (111). The lower roller (120B) may be positioned between the upper belt and the lower belt (not shown in the drawing) of the conveyor belt (111).

[0099] At this time, the pressure dot (135) of the dot welding part (130) provided on the upper roller (120A) can press the heat dissipation panel (200) from the top to the bottom, and the pressure dot (135) of the dot welding part (130) provided on the lower roller (120B) can press the heat dissipation panel (200) from the bottom to the top.

[0100] Here, the welding device (100) for a heat exchange panel according to the first embodiment of the present invention may include a supporter section (140). The supporter section (140) facilitates the installation of the welder roller section (120) within the workshop. The supporter section (140) may include a one-sided supporter section (140A) and a other-sided supporter section (140B).

[0101] One side supporter part (140A) supports the installation and rotation of one end of the welder roller part (120), and the other side supporter part (140B) supports the installation and rotation of the other end of the welder roller part (120).

[0102] One side supporter section (140A) and the other side supporter section (140B) may each include a support plate body (141) vertically positioned within the workspace. A roller support hole (142) through which both ends of a lower roller (120B) pass may be formed in the support plate body (141), and an upper roller installation groove (143) in which the upper end of the support plate body (141) is opened in a 'U' shape may be formed above the roller support hole (142).

[0103] FIGS. 6a and 6b are exploded perspective views of FIG. 5, FIG. 7 is a cross-sectional view taken along line A-A' of FIG. 1 and an enlarged view of that part, and FIG. 8 is a cutaway perspective view taken along line A-A' of FIG. 1 and an enlarged view of that part.

[0104] A welding device (100) for a heat exchange panel according to the first embodiment of the present invention may further include electrode portions (125-127) as referenced in FIGS. 6a to 8. The electrode portions (125-127) are connected to the welder roller portion (120) to conduct electricity and perform the function of supplying a predetermined current to the dot welding portion (130). When current is supplied to the dot welding portion (130) through the electrode portions (125-127), electrical resistance heat is generated, and welding can be performed by using this heat to melt the contact area of ​​the heat dissipation panel (200) in contact with the pressure dot (135). Therefore, it is preferable that the dot welding portion (130) and the welder roller portion (120) be provided with a conductive material to which current is applied by the electrode portions (125-127).

[0105] The electrode portion (125~127) may include a copper plate (126) disposed on the outside of the welder roller portion (120), and an electrode pipe (125) which is electrically connected to the copper plate (126) and has its outer surface electrically connected to the inner surface of the welder roller portion (120).

[0106] A copper plate (126) may be placed on the outer surface of the support body (141) of either the one-sided supporter part (140A) or the other-sided supporter part (140B) (in this embodiment, the other-sided supporter part (140B)). Here, an insulating member (127) for insulation from surrounding components such as the support body (141) may be placed around the copper plate (126). The copper plate (126) is a copper plate made of copper material and can perform the function of receiving power from an external power source (not shown) and transmitting it to the electrode pipe (125).

[0107] The electrode pipe (125) can be formed in a pipe shape with one end fixed in contact with one side of the copper plate (126). Here, the diameter of the electrode pipe (125) can be formed to a size corresponding to the inner diameter of the inner surface of the welder roller part (120). Accordingly, the outer surface of the electrode pipe (125) can be in contact with the inner surface of the welder roller part (120).

[0108] However, since the electrode pipe (125) must maintain an electrical contact with the welder roller part (120) that rotates relatively, a conductive oil (not shown) may be applied between the inner surface of the welder roller part (120) and the outer surface of the electrode pipe (125). In this way, by applying a conductive oil between the electrode pipe (125) and the welder roller part (120), electrical conductivity between the two components can be improved.

[0109] The upper roller (120A) and lower roller (120B) configured as described above can be installed such that both ends of each are rotatably supported by a supporter part (140). That is, the electrode parts (125~127) can be installed to be electrically connected to the welder roller part (120) through at least one of the one-sided supporter part (140A) and the other-sided supporter part (140B).

[0110] Here, the lower roller (120B) can be installed such that its two ends are fitted into roller support holes (142) formed in one supporter part (140A) and the other supporter part (140B) of the supporter part (140), respectively. A bearing assembly (not shown in the drawing) that supports the rotation of the lower roller (120B) may be provided in the roller support hole (142).

[0111] Meanwhile, unlike the lower roller (120B) described above, the upper roller (120A) can be installed on one side supporter part (140A) and the other side supporter part (140B) via a mounting plate (145).

[0112] Specifically, the mounting plate (145) may have a roller through-hole (not indicated in the drawing) formed therein through which one of the two ends of the upper roller (120A) passes. The roller through-hole may be formed with the same shape and size as the roller support hole (142) formed in the support plate body (141) described above. A bearing assembly (149) that supports the rotation of the upper roller (120A) may be provided inside the roller through-hole.

[0113] In this way, the upper roller (120A), with the mounting plate (145) installed at both ends, can be installed by being inserted from top to bottom into the upper roller installation groove (143) formed to be open upward on the upper side of the support plate body (141).

[0114] At this time, the mounting plate (145) may be coupled to allow sliding movement in the vertical direction with respect to at least one surface of the one-sided supporter part (140A) or the other-sided supporter part (140B). To this end, a sliding rail part (146, 147) may be installed between the mounting plate (145) and the support plate body (141).

[0115] The sliding rail section (146, 147) may include at least one LM guide rail (146) fixed vertically on one side of the support plate body (141), and an LM moving block (147) fixed to the opposite side of the mounting plate (145) and connected to the LM guide rail (146) to slide vertically.

[0116] In this way, the upper roller (120A) of the welder roller section (120) is installed on the support section (140) via a mounting plate (145) so as to be supported toward the upper surface of the conveyor belt (111) by its own weight, thereby enabling the heat dissipation panel (200) being transported in a horizontal direction to be pressed from top to bottom while rotating in place.

[0117] Here, at least one retainer roller (148) may be further provided at the lower end of the mounting plate (145) so as to protrude toward the upper surface of the lower conveyor belt (111). The retainer roller (148) may be provided to rotate freely by an external force with respect to a left-right horizontal axis. By having a portion of its outer surface contact the upper surfaces of both left and right ends of the conveyor belt (111) in the width direction as it is transported horizontally, such a retainer roller (148) can perform the function of supporting the conveyor belt (111) so that it is transported stably horizontally by applying a predetermined tension to the conveyor belt (111).

[0118] Meanwhile, referring to FIGS. 6a and 6b, a belt catch gear (128) may be installed at both left and right ends of the lower roller (120B) to move the conveyor belt (111) by engaging with and rotating the conveyor belt (111). Here, the belt catch gear (128) does not need to be provided in all of the welding devices (101 to 106) for heat exchange panels according to the first embodiment of the present invention, which are provided in multiple units; it is acceptable to provide it in only one of them (in this embodiment, the lower roller (120B) of the welding device for heat exchange panels corresponding to reference numeral 101 corresponds to this). As described later, the same applies to the driving gear unit (150) that rotates the belt catch gear (128).

[0119] The belt catch gear (128) may have gear teeth (not indicated in the drawing) formed circumferentially along its outer edge. The gear teeth of the belt catch gear (128) may be engaged with the belt catch groove (115) formed in the conveying direction of the conveyor belt (111) and rotated. To this end, the belt catch groove (115) may be formed at each end of the width direction of the conveyor belt (111), and a number of them may be formed continuously in a long manner in the conveying direction in which the conveyor belt (111) is transported.

[0120] Meanwhile, the welding device (100) for a heat exchange panel according to the first embodiment of the present invention may further include a driving gear unit (150) which is provided in either one of a one-sided supporter unit (140A) and a other-sided supporter unit (140B), as referenced in FIGS. 6a and 6b, and which rotates by a predetermined driving force to rotate a belt catch gear (128).

[0121] The drive gear unit (150) may include an upper gear (151) and a lower gear (152). The upper gear (151) may be fitted and fixed to one end of the upper roller (120A). The lower gear (152) may be fitted and fixed to one end of the lower roller (120A) corresponding to the side equipped with the upper gear (151). The upper gear (151) and the lower gear (152) may each be provided in the form of spur gears and arranged to mesh with each other.

[0122] Here, an unillustrated drive unit may be connected to either the upper gear (151) or the lower gear (152) to transmit rotational force, and when rotational force is transmitted from the drive unit, the upper gear (151) and the lower gear (152) mesh with each other and rotate, thereby allowing the upper roller (120A) and the lower roller (120B) to rotate simultaneously.

[0123] The process of welding two heat dissipation panels (200) using a welding device (100) for a heat exchange panel according to the first embodiment of the present invention configured as above is briefly explained as follows.

[0124] First, when the drive unit is operated to rotate the drive gear unit (150), the upper roller (120A) and the lower roller (120B) rotate simultaneously due to the simultaneous rotation of the upper gear (151) and the lower gear (152).

[0125] At this time, the dot welding parts (130A, 1300B) that are fitted and fixed to the upper roller (120A) and the lower roller (120B), respectively, are also rotated simultaneously, and the heat dissipation panel (200) that is horizontally transported between them can be pressed by a plurality of pressure dots (135).

[0126] Here, in the welding device (100) for a heat exchange panel according to the first embodiment of the present invention, as referenced in FIG. 1, a plurality of (101 to 106) are arranged in the direction of transport of the heat dissipation panel (200) by the conveyor unit (110). When a plurality of strength reinforcing members (240) are arranged in rows in the length direction or width direction on the heat dissipation panel (200), a single dot welding member (130) may be provided at a position corresponding to the row or column direction of the plurality of strength reinforcing members (240) on the welder roller unit (120) of each welding device (101 to 106).

[0127] More specifically, the dot welding section (130) provided on the welder roller section (120) of the welding device (101) furthest forward among the multiple welding devices (101 to 106) may be positioned so that a pressure dot (135) contacts the row closest to one side in the width direction among the rows formed by the multiple rigidity reinforcing sections (240) formed on the heat dissipation panel (200).

[0128] The installation position of the dot welding section (130) provided in the subsequent welding devices (102~106) can be sequentially set to correspond to the row provided on the other side in the width direction of the plurality of rigidity reinforcing sections (240).

[0129] Therefore, when a welding device (100) for a heat exchange panel according to the first embodiment of the present invention is arranged to correspond to the number of rows of a plurality of rigidity reinforcing members (240) formed in a heat dissipation panel (200), and the plurality of heat dissipation panels (200) are arranged spaced apart in the conveying direction of the conveyor unit (110), and then transported in a horizontal direction using the conveyor unit (110), the welding process using the plurality of rigidity reinforcing members (240) can be completed in a single welding process. Accordingly, the welding process time for a unit heat dissipation panel (200) can be significantly reduced.

[0130]

[0131] FIG. 9 is a perspective view showing a welding device for a heat exchange panel according to a second embodiment of the present invention, FIG. 10a is a cross-sectional view taken along the line B-B' of FIG. 9, FIG. 10b is a plan view of FIG. 9, FIG. 11 is a downward perspective view and an upward perspective view showing the welding appearance by the welder roller part of the configuration of FIG. 9, and FIG. 12 is a part of a front view showing the welding appearance of the heat dissipation panel of the configuration of FIG. 9.

[0132] Hereinafter, a welding device (1000) for a heat exchange panel according to a second embodiment of the present invention will be described. Referring to FIGS. 9 to 12, the welding device (1000) for a heat exchange panel according to a second embodiment of the present invention may include a welder roller part (1120) which is rotatably provided in place, two heat dissipation panels (200) prior to welding which are fixed horizontally to a moving panel (1110), and a panel moving part (1150) which moves the moving panel (1110) horizontally in the longitudinal or width direction.

[0133] Hereinafter, the welding device (1000) for a heat exchange panel according to the second embodiment of the present invention is structured such that the specific configuration of the welder roller part (1120) and the dot welding part (1130) is the same as that of the first embodiment (100), except for the configuration of the panel moving part (1150) described above; therefore, a redundant description of the same configuration is omitted.

[0134] Referring to FIGS. 9 to 11, the panel moving part (1150) may include a base part (1001) on which a welder roller part (1120) is installed, a pair of transfer rails (1160) each spaced apart in the width direction of the heat dissipation panel (200) on the upper surface of the base part (1001), and a pair of transfer frames (1170) that move horizontally along the length direction of the heat dissipation panel (200) along the pair of transfer rails (1160).

[0135] A pair of transfer rails (1160) may each include an LM transfer rail (1162) that is arranged in a straight line along the longitudinal direction of the heat dissipation panel (200) on the upper part of the rail installation section (1161).

[0136] On the upper surface of the base part (1001) corresponding to the inner side of the LM transfer rail (1162), the one-sided support part (1140A) and the other-sided support part (1140B) described in the first embodiment (100) described above may be installed. The welder roller part (1120) and the dot welding part (1130) may be provided so as to be rotatable in place at the workspace (not indicated in the drawing) via the one-sided support part (1140A) and the other-sided support part (1140B).

[0137] Meanwhile, a pair of transfer frames (1170) may include a pair of vertical transfer legs (1171) vertically positioned on the upper portion of each of the LM transfer rails (1162) of the pair of transfer rails (1160), and an upper bar (1172) connecting the upper portions of the pair of vertical transfer legs (1171) in a horizontal direction. Here, the lower portions of the pair of vertical transfer legs (1171) may be slidably connected to the LM transfer rail (1162) via an LM transfer block (1165).

[0138] Additionally, among the configurations of a pair of transfer frames (1170), the upper bar (1172) may be formed in a rail shape similar to the LM transfer rail (1162) described above. A moving panel (1110) equipped with a heat dissipation panel (200) may be connected to the upper bar (1172) via an LM mounting block (1175) which is provided in a block shape similar to the LM transfer block (1165) described above.

[0139] More specifically, a pair of transfer frames (1170) may each be positioned in the width direction at one end and the other end of the heat dissipation panel (200). Here, the front end of the moving panel (1110) may be slidably connected in the width direction to an upper bar (1172) positioned at the one end of the length direction of the heat dissipation panel (200) among the pair of transfer frames (1170) via an LM mounting block (1175). Additionally, the rear end of the moving panel (1110) may be slidably connected in the width direction to an upper bar (1172) positioned at the other end of the length direction of the heat dissipation panel (200) among the pair of transfer frames (1170) via an LM mounting block (1175).

[0140] Therefore, the moving panel (1110) can be moved horizontally in the longitudinal direction by a pair of transfer frames (1170) that slide along a pair of transfer rails (1160) in the longitudinal direction on the upper part of the base part (1001), and at the same time, can be moved horizontally in the width direction along the upper bar (1172).

[0141] Here, the panel moving part (1150) may further include a first drive motor (1167) for moving a pair of transfer frames (1160) and a second drive motor (1177) for transferring a moving panel (1110).

[0142] Figure 12 is a partial front view showing the welding of the heat dissipation panel in the configuration of Figure 9.

[0143] In the welding device (1000) for a heat exchange panel according to the second embodiment of the present invention, the welder roller part (1120) may include an upper roller (1120A) positioned on the upper side of the moving panel (1110) and a lower roller (1120B) positioned on the lower side of the moving panel (1110), as referenced in FIG. 11. The moving panel (1110) may be moved horizontally in the longitudinal or width direction of the heat dissipation panel (200) by the panel moving part (1150) while the heat dissipation panel (200) is stably installed in the panel installation groove (1113).

[0144] Referring to FIG. 12, when the welding process for the heat dissipation panel (200) begins, the moving panel (1110) can be moved horizontally along the longitudinal direction of the heat dissipation panel (200) by the operation of the first drive motor (1167) and the second drive motor (1177).

[0145] At this time, the pressure dot (1135) of the dot welding part (1130A) provided on the upper roller (1120A) can press the heat dissipation panel (200) from the top to the bottom, and the pressure dot (1135) of the dot welding part (1130B) provided on the lower roller (1120B) can press the heat dissipation panel (200) from the bottom to the top.

[0146] Likewise, in the welding device (1000) for a heat exchange panel according to the second embodiment of the present invention, when a plurality of rigidity reinforcing members (240) formed on two heat dissipation panels (200) are arranged in rows in the longitudinal or width direction of the heat dissipation panels (200), the panel moving member (1150) can move the moving panel (1110) horizontally in the longitudinal direction to complete welding of one row in a straight line among the plurality of rigidity reinforcing members (240), and then move it horizontally in the width direction to repeat welding another row in a straight line adjacent to the row in which welding was completed among the plurality of rigidity reinforcing members (240) in the same manner.

[0147] The welding device (1000) for a heat exchange panel according to the second embodiment of the present invention as described above can weld a heat dissipation panel (200) with only a single welding device (1000) without the need to unnecessarily provide a number of welding devices (1000), thereby reducing the constraints on the installation location.

[0148]

[0149] For the above, a welding device for a heat exchange panel according to embodiments of the present invention has been described in detail with reference to the attached drawings. However, the embodiments of the present invention are not necessarily limited to the embodiments described above, and it is obvious that various modifications and implementations within an equivalent scope are possible by those skilled in the art to which the present invention belongs. Therefore, the true scope of the rights of the present invention shall be determined by the claims set forth below.

[0150]

[0151] The present invention provides a welding device for a heat exchange panel that can shorten welding time and improve welding precision by maximizing the advantages of spot welding and seam welding methods.

Claims

1. A welding device for a heat exchange panel that joins two heat dissipation panels, each having a refrigerant flow space of a predetermined thickness formed inside and a plurality of rigid reinforcing members protruding in mutually facing directions within the refrigerant flow space, A dot welding section having a plurality of pressure dots formed thereon, which press each of the two heat dissipation panels from the outer side in the thickness direction of each of the two heat dissipation panels to bring them into contact with each other and melt and bond them through electrical resistance heat; A welder roller part that guides the rotation of the dot welding part by fitting the dot welding part in the circumferential direction; and It includes an electrode part that is electrically connected to the welder roller part and supplies a predetermined current to the dot welding part; A welding device for a heat exchange panel, wherein the dot welding portion and the welder roller portion are made of a conductive material to which current is applied by the electrode portion.

2. In Claim 1, The above dot welding part is, The inner surface is formed in a ring shape that is fitted and coupled to the outer surface of the welder roller part, and A welding device for a heat exchange panel, wherein a plurality of pressure dots are formed to protrude radially and sharply on the outer surface.

3. In Claim 2, A welding device for a heat exchange panel, wherein the plurality of pressure dots are formed continuously in an annular fashion along the outer surface of the dot welding portion.

4. In Claim 1, The above electrode part is, A copper plate disposed on the outer side of the above-mentioned welder roller portion; and An electrode pipe configured to be electrically connected to the copper plate and positioned so that its outer surface is electrically in contact with the inner surface of the welder roller portion; comprising A welding device for a heat exchange panel, wherein conductive oil is applied between the welder roller section and the electrode pipe.

5. In Claim 1, The above welder roller part is provided to be rotatable in place, and A welding device for a heat exchange panel, further comprising: a conveyor section for horizontally moving the two heat dissipation panels before welding.

6. In Claim 5, The above conveyor section is a welding device for a heat exchange panel equipped with a conveyor belt that rotates and conveys based on a first rotation axis on one side in the longitudinal direction and a second rotation axis on the other side in the longitudinal direction.

7. In Claim 6, The above conveyor belt has a heat dissipation panel installation groove formed to be open in the vertical direction for installing the two heat dissipation panels, and A welding device for a heat exchange panel, wherein each of the two heat dissipation panels is inserted into the heat dissipation panel installation groove, and one end in the longitudinal direction and the other end in the longitudinal direction are fixed by a plurality of panel fixing clips.

8. In Claim 6, The above welder roller part An upper roller positioned on the upper side of the upper belt of the above conveyor belt; and A lower roller positioned between the upper belt and the lower belt of the above conveyor belt; comprising, The pressure dot of the dot welding portion provided on the upper roller presses the heat dissipation panel from top to bottom, and A welding device for a heat exchange panel, wherein the pressure dot of the dot welding portion provided on the lower roller presses the heat dissipation panel from the bottom to the top.

9. In Claim 8, One-sided supporter portion supporting the rotation of one end portion of the upper roller and lower roller; and Further comprising a supporter part on the other side that supports the rotation of the other end of the upper roller and the lower roller; A welding device for a heat exchange panel, wherein the electrode portion is installed via either one of the one-sided supporter portion and the other-sided supporter portion.

10. In Claim 9, Belt catch gears are installed at both left and right ends of the lower roller to engage with and move the conveyor belt, and A welding device for a heat exchange panel, wherein the belt catch gear is rotated by engaging gear teeth formed along the outer circumference in a belt catch groove formed in the conveying direction of the conveyor belt.

11. In Claim 10, A welding device for a heat exchange panel, further comprising: a driving gear unit provided in either the one-sided supporter unit or the other-sided support unit, which rotates by a predetermined driving force to rotate the belt catch gear.

12. In Claim 10, A welding device for a heat exchange panel, further comprising: a mounting plate fixed to both left and right ends of the upper roller and mediating the installation of the upper roller with respect to the one-sided supporter portion and the other-sided support portion.

13. In Claim 12, A welding device for a heat exchange panel, wherein the above-mentioned mounting plate is slidably connected to at least one surface of the one-sided supporter or the other-sided supporter so as to be movable in the vertical direction.

14. In Claim 12, A welding device for a heat exchange panel, wherein the lower part of the above mounting plate is equipped with at least one retainer roller that supports the upper surface of both left and right ends of the upper belt of the above conveyor belt.

15. In Claim 5, When the plurality of rigidity reinforcing members formed on the two heat dissipation panels are arranged in rows in the length or width direction of the heat dissipation panels, and the plurality of welder roller members are arranged in the movement direction of the conveyor members, A welding device for a heat exchange panel, wherein the above-mentioned dot welding section is provided with a single welder roller section corresponding to the row or column direction of the plurality of rigidity reinforcing sections.

16. In Claim 15, In the above conveyor section, a plurality of the above heat dissipation panels are arranged in the direction of movement of the conveyor section, and A welding device for a heat exchange panel, wherein the above-mentioned heat dissipation panel is transported by the above-mentioned conveyor section and is sequentially welded by the dot welding section provided in the above-mentioned plurality of welder roller sections.

17. In Claim 15, In the above conveyor section, a plurality of the above heat dissipation panels are arranged in the direction of movement of the conveyor section, and A welding device for a heat exchange panel, wherein the dot welding portions are each disposed in the plurality of welder roller portions and are positioned at a location corresponding to the thermal direction corresponding to the transfer direction of the heat dissipation panel.

18. In Claim 5, The above welder roller part is provided to be rotatable in place, and The two heat dissipation panels mentioned above are fixed horizontally to the moving panel before welding, and A welding device for a heat exchange panel, further comprising: a panel moving part that moves the above-mentioned moving panel horizontally in the longitudinal or width direction.

19. In Claim 18, The above panel moving part is, A base part on which the above welder roller part is installed; A pair of transfer rails spaced apart in the width direction of the heat dissipation panel on the upper surface of the base portion; and A pair of transfer frames that move horizontally along the longitudinal direction of the heat dissipation panel along the pair of transfer rails; comprising The above moving panel is a welding device for a heat exchange panel that moves horizontally in the width direction with respect to the top bar of each of the pair of transfer frames.

20. In Claim 19, The above panel moving part is, A first drive motor for moving the above pair of transfer frames; and A welding device for a heat exchange panel, further comprising: a second drive motor for transporting the moving panel.

21. In Claim 18, The above welder roller part is, An upper roller positioned on the upper side of the above-mentioned moving panel; and A lower roller disposed on the lower side of the moving panel; including, The pressure dot of the dot welding portion provided on the upper roller presses the heat dissipation panel from top to bottom, and A welding device for a heat exchange panel, wherein the pressure dot of the dot welding portion provided on the lower roller presses the heat dissipation panel from the bottom to the top.

22. In Claim 18, When the plurality of rigidity reinforcing members formed on the two heat dissipation panels are arranged in rows in the length direction or width direction of the heat dissipation panels, A welding device for a heat exchange panel, wherein the panel moving part moves the moving panel horizontally in the longitudinal direction to complete welding of one row in a straight line among the plurality of rigid reinforcement parts, and then moves it horizontally in the width direction to weld another row in a straight line adjacent to the one row in which welding was completed among the plurality of rigid reinforcement parts in the same manner.

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