Multi-stage coating apparatus for secondary battery

Abstract

The present invention relates to a coating apparatus for a secondary battery, and more particularly, to a multi-stage coating apparatus for a secondary battery, in which a plurality of drying modules for drying an object to be coated are stacked vertically, and then the object to be coated is dried while zigzagging, thus reducing the space required for drying, and vertically stacking the drying modules can promote uniform drying, and thereby improve the quality of the secondary battery.

Description

Multi-stage secondary battery coating device

[0001] The present invention is a multi-stage secondary battery coating device for coating electrode materials of a secondary battery, which coats a plurality of drying modules in the height direction, and then allows the coating object to be dried while moving in a zigzag manner, thereby minimizing the space for drying, and by stacking in the vertical direction, uniform drying is achieved, thereby improving the quality of the secondary battery.

[0002] Secondary batteries are generally rechargeable and have been widely used recently. To manufacture these secondary batteries, a slurry is prepared by mixing certain electrode materials (active materials, conductive materials, etc.), then the slurry is coated onto a current collector, and the slurry-coated current collector is dried and slit.

[0003] Referring to Fig. 1, the above coating step is described using a coater (C) to spray the slurry onto the coating object (S). That is, the slurry is sprayed from the coater (C) onto the coating object (S) to perform coating. The coating object (S) is supplied by a supply unit (R1). A current collector, which is the coating object, is wound around the supply unit (R1), and the coating object is sprayed toward the coater (C) as it is unwound from the supply unit (R1). The coating object coated by the coater (C) is wound around a winding unit (R2).

[0004] The coating target (S) coated by the above coater (C) is heated and dried by a drying unit (not shown).

[0005] However, these prior art techniques required a long drying section to dry the coating object, which necessitated a large space. Furthermore, these prior art techniques had the problem of uneven drying, resulting in overdrying and underdrying, which in turn deteriorated the quality of secondary batteries.

[0006] The present invention is intended to solve the above-described problem, and provides a multi-stage secondary battery coating device capable of miniaturizing a space for drying by stacking multiple layers of drying modules in the height direction and drying the coating object while moving in a zigzag manner, and improving the quality of the secondary battery by promoting uniform drying through vertical stacking.

[0007] In order to achieve the above object, the present invention comprises a drying module (300) that is stacked in multiple stages in the height direction, a supply unit (R1) that is arranged on one side of the drying module (300) to supply a coating object (S), a winding unit (R2) that is arranged on the other side of the drying module (300) to wind the dried coating object (S), and a coating module (CM) that is arranged between the supply unit (R1) and the drying module (300) to coat the coating object (S), and the coating module (CM) includes a coater (C) that is arranged on one side of the drying module (300) to coat the coating object (S), and the drying module (300) comprises a plurality of module cases (310) that are arranged in multiple stages in the height direction, a plurality of rollers (320) that are provided on the inside and outside of the module cases (310) to transport the coating object (S), and a plurality of rollers that are arranged inside the module cases (310) to dry the coating object (S). A multi-stage secondary battery coating device is provided, which includes a drying section (DD) and a plurality of rollers (320) so that the coating object (S) is arranged in multiple layers in the height direction while repeatedly advancing and retreating in the horizontal direction.

[0008] In the above, the coating module (CM) further includes a first transfer unit (100) arranged on one side of the coater (C) to adjust the horizontal position of the coater (C), and the first transfer unit (100) includes a plate-shaped base (110) fixed to one side of the module case (310), a housing (150) fixed to the base (110), a moving block (160) movably provided on one side of the housing (150) and on which the coater (C) is loaded, a transfer unit (170) provided inside the housing (150) and moving the moving block (160), a first power supply unit (120) fixed to one side of the base (110) and supplying rotational force, a first shaft (SH1) rotated by the first power supply unit (120), and a first shaft (SH1) provided between the first shaft (SH1) and the transfer unit (170) to supply rotational force. It includes a power transmission unit (130) that transmits power to a transfer unit (170), and the transfer unit (170) includes a cylindrical transfer unit body (1710), a spiral groove (1720) that is arranged in a spiral shape on the outer surface of the transfer unit body (1710) and is recessed to a specific depth, and a support ring (1730) that is arranged on both sides of the transfer unit body (1710) and rotatably supports the transfer unit body (1710) inside a housing (150).

[0009] In the above, the housing (150) includes a housing body (1510) having a hollow shape and having both longitudinal sides of the transfer unit body (1710) open, a support (1520) disposed inside the housing body (1510) and supporting the transfer unit body (1710), a first guide (1540) disposed on the upper surface of the housing body (1510) and arranged along the moving direction of the moving block (160), and an open slot (1550) disposed along one side of the first guide (1540) and open with a predetermined width, and the moving block (160) has a plate shape and includes a moving block body (1610) on which a coater (C) is loaded, a linkage bar (1620) disposed downward on the lower surface of the moving block body (1610) and inserted into a spiral groove (1720) of the transfer unit body (1710), and the moving block The main body (1610) includes a protrusion (1630) that is bent downward from both sides in the width direction and coupled to the first guide (1540), and the linkage bar (1620) penetrates the open slot (1550) of the housing main body (1510) and is inserted into the spiral groove (1720), and the side of the transfer unit main body (1710) supported by the support (1520) in the direction of the power transmission unit (130) is exposed from the housing (150) and is coupled to the power transmission unit (130), and the exposed transfer unit main body (1710) is supported by the support (140), and the support (140) includes a support main body (1410) installed on the base (110) and a through hole (1420) formed in the support main body (1410) and into which the transfer unit main body (1710) is rotatably inserted, and the power transmission unit (130) is It includes a first gear (1310) provided on a first shaft (SH1), and a second gear (1320) coupled with the first gear (1310) and linked with the transfer unit body (1710).

[0010] In the above, the second transport unit (200) is further included, which is provided on the moving block (160) and moves the coater (C) back and forth in the direction of the coating target (S), and the second transport unit (200) includes a second power supply unit (220) which is provided on the moving block (160) and generates forward and backward power, a pair of guide plates (210) which are vertically arranged on the moving block (160), a coater lifting unit (250) which is coupled to the guide plate (210) and moves up and down, and a pair of link units (LN) which are rotatably provided by being pin-coupled on both sides in the width direction of the coater lifting unit (250), and the coater (C) is arranged on the coater lifting unit (250), and the link unit (LN) includes a first link (230) which is arranged at a constant interval in the length direction of the coater lifting unit (250), and A second link (240) is included, and the upper part of the first link (230) or the second link (240) is moved forward and backward by the second power supply unit (220), and the first link (230) includes a first link body (2310) having a shape bent at a specific angle, a first moving block (2320) pin-coupled to the lower end of the first link body (2310), and a first guide block (2330) arranged on the moving block (160) to guide the movement of the first moving block (2320), and the first moving block (2320) is male-female coupled to the first guide block (2330), and the second link (240) includes a second link body (2410) having a symmetrical shape with the first link body (2310), and a second moving block pin-coupled to the lower end of the second link body (2410). It includes a block (2420) and a second guide block (2430) arranged on the moving block (160) to guide the movement of the second moving block (2420), wherein the second moving block (2420) is male and female coupled to the second guide block (2430), and the guide plate (210) is arranged between the first guide block (2330) and the second guide block (2430).The upper part of the first link (230) is moved forward or backward by the second power supply unit (220), and thereby the cotter lifting / lowering unit (250) is combined with the guide plate (210) to be raised / lowered, and at the same time, the second link (240) is operated in the opposite direction to the first link (230).

[0011] In the above, the cotter lifting / lowering part (250) includes a pair of lifting / lowering plates (2510) spaced apart in the width direction of the moving block (160), and a connecting bar (2520) connecting the lifting / lowering plates (2510), and a cotter (C) is arranged on the connecting bar (2520), and the lifting / lowering plate (2510) includes a lifting / lowering plate main body (2511) in the shape of a plate, a guide protrusion (2512) extending upwardly on the upper side of the lifting / lowering plate main body (2511), and a protruding pin (2513) protruding from the lifting / lowering plate main body (2511) and pin-connecting the first link (230) and the second link (240), and a guide groove (2513) is formed in the lifting / lowering plate main body (2511) and the guide protrusion (2512) in the lifting / lowering direction, and The first link (230) and the second link (240) are pin-connected to the main body (2511) of the lifting plate, and the main body (2511) of the lifting plate moves up and down by the forward and backward movement of the first link (230). However, the second link (240) operates in the opposite direction to the first link (230) in conjunction with the upward and downward movement of the main body (2511), and the main body (2511) of the lifting plate moves up and down while the guide plate (210) is connected to the guide groove (2513) to move the coater (C) forward and backward in the direction of the coating target (S).

[0012] The present invention described above has the effect of miniaturizing the space for drying and improving the quality of secondary batteries by achieving uniform drying through vertical stacking.

[0013] Figure 1 is a schematic diagram showing a coating device for a general secondary battery.

[0014] Figure 2 is a schematic diagram of a coating device according to one embodiment of the present invention;

[0015] Figures 3 and 4 are perspective views showing a first transport unit for transporting a coater in a specific direction among coating devices according to one embodiment of the present invention.

[0016] FIG. 5 is a partial perspective view showing the support and transport section of the first transport section of the coating device according to one embodiment of the present invention;

[0017] FIG. 6 and FIG. 7 are partial cross-sectional perspective views showing the front and upper portions of the housing of the first transfer unit of the coating device according to one embodiment of the present invention, respectively.

[0018] Figures 8 to 10 are perspective views of a second transport unit of a coating device according to one embodiment of the present invention.

[0019] Figure 11 is a schematic diagram showing the operational relationship of the second transport unit of the coating device according to one embodiment of the present invention.

[0020] Fig. 12 is a perspective view showing a second power supply unit of a coating device according to one embodiment of the present invention.

[0021] Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings. In this process, the thickness of lines and the sizes of components depicted in the drawings may be exaggerated for clarity and convenience of explanation.

[0022] Additionally, the terms described below are defined based on their functions within the present invention, and their meanings may vary depending on the intent or custom of the user or operator. Therefore, the definitions of these terms should be based on the contents of this specification.

[0023] In addition, the examples below do not limit the scope of the present invention, but are merely exemplary of the components presented in the claims of the present invention, and examples that include components that are included in the technical idea throughout the specification of the present invention and can be substituted as equivalents in the components of the claims may be included in the scope of the present invention.

[0024]

[0025] A coating device (10) according to one embodiment of the present invention includes a drying module (300) that is stacked in multiple stages in the height direction as illustrated in FIGS. 2 to 12, a supply unit (R1) that is arranged on one side of the drying module (300) to supply a coating object (S), and a winding unit (R2) that is arranged on the other side of the drying module (300) to wind the dried coating object (S). At this time, the coating object (S) is coated by the coating module (CM). The coating module (CM) is arranged between the supply unit (R1) and the drying module (300). The coating module (CM) includes a coater (C) that is arranged on one side of the drying module (300) to coat the coating object (S). An electrode material of a secondary battery is coated by the coater (C), and since the coater (C) itself is a widely known configuration, a detailed description and illustration thereof will be omitted. In addition, the coater (C) can be fixed by a structure (A) placed on one side of the drying module (300), and since this structure (A) is also a general technology, a detailed description and illustration thereof will be omitted.

[0026] Meanwhile, the drying module (300) includes a plurality of module cases (310) arranged in multiple stages in the height direction, a plurality of rollers (320) provided on the inside and outside of the module cases (310) to transport the coating object (S), and a plurality of drying units (DD) arranged inside the module cases (310) to dry the coating object (S). The plurality of rollers (320) are provided so that the coating object (S) is arranged in multiple stages in the height direction while repeatedly moving forward and backward with respect to the horizontal direction. 1

[0027] That is, a plurality of module cases (310) are stacked in multiple layers in the height direction. To this end, a structure (not shown) having a first layer (F1) and a second layer (F2) arranged in the height direction may be included. The structure may be a horizontal structure arranged horizontally inside a building and arranged in multiple layers in the height direction. At this time, an opening (F2-1) may be formed in a portion of the upper layer (F2) to allow the coating target (S) to move, which will be described separately.

[0028] Meanwhile, the coating target object (S) can be transported by a plurality of rollers (320), and the plurality of rollers (320) can be arranged in a plurality of layers in the height direction while the coating target object (S) repeatedly moves forward and backward in the horizontal direction.

[0029] In other words, module cases (310-1, 310-2) are respectively arranged on multiple layers (F1, F2) arranged in the height direction. As in the embodiment illustrated in FIG. 2, it is also possible to arrange the second module case (310-2) and the first module case (310-1) on the second layer (F2) and the first layer (F1), respectively. A plurality of rollers are arranged inside the second module case (310-2) arranged on the second layer (F2), and a plurality of rollers are also arranged inside the first module case (310-1) arranged on the first layer (F1). By these rollers, the coating target (S) moves to the right side in the drawing inside the second module case (310-2) and then moves to the left side again. Afterwards, it is discharged from the second module case (310-2) and passes through the opening (F2-1) to the first module case (310-1) on the first floor (F1). At this time, a plurality of rollers (320) are also arranged in the opening (F2-1) to direct it from the second module case (310-2) to the first module case (310-1).

[0030] The coating object (S) that has entered the first module case (310-1) also moves to the right in the drawing and then to the left again, and is finally wound on the winding unit (R2). In other words, the coating object (S) is dried while moving in a zigzag manner in the left and right directions in the drawing. According to the present invention, the space for drying can be made smaller than before. In addition, according to the present invention, since the drying modules (300) are stacked in the height direction, heat transfer between them is relatively efficient, so that uniform drying can be realized, and thereby the quality of the secondary battery can be improved.

[0031] At this time, it is also possible to dry the coating target object (S) on which coating has been completed by providing a heating and drying unit (DD) inside the module case (310). This heating and drying unit (DD) can utilize a widely known microwave oven, infrared (IR) lamp, or hot air generator.

[0032] Meanwhile, the roller (320), the supply section (R1), and the winding section (R2) can utilize conventional technology, so redundant descriptions and illustrations thereof are omitted.

[0033] A coating module (CM) is arranged on one side of the drying module (300) of the present invention. At this time, a first transport unit (100) may be included to adjust the horizontal position of the coater (C) of the coating module (CM). As illustrated in FIG. 3, when the coating target (S) moves in the left-right direction (direction 1) in the drawing, the coater (C) is transported in the horizontal direction, i.e., the width direction, by the first transport unit (100) of the present invention, thereby realizing uniform coating.

[0034] This first transfer unit (100) may include a plate-shaped base (110) fixed to one side of the outside of the module case (310), a housing (150) fixed to the base (110), and a moving block (160) movably provided on one side of the housing (150) and on which a coater (C) is loaded. At this time, a transfer unit (170) is provided inside the housing (150) to move the moving block (160). A coater (C) is mounted on the moving block (160), and the moving block (160) and the coater (C) can be transferred by the transfer unit (170).

[0035] Meanwhile, the base (110) can be fixed to a structure (A) on which the coating module (CM) is installed, and the configuration for fixing the base (110) and the structure (A) is a widely known technology, so a detailed description and illustration thereof are omitted.

[0036] A first power supply unit (120) is fixed and installed on one side of the above base (110) to supply rotational power. A first shaft (SH1) is provided on this first power supply unit (120) to rotate. The transfer unit (170) is driven by the first shaft (SH1), and for this purpose, a power transmission unit (130) is provided between the first shaft (SH1) and the transfer unit (170) to transmit rotational power to the transfer unit (170).

[0037] That is, the first power supply unit (120) can use a widely known electric motor, etc., and the rotational power generated in the first power supply unit (120) drives the transport unit (170) through the first shaft (SH1) and the power transmission unit (130). Meanwhile, the first power supply unit (120) can use a widely known electric motor, etc., and since such an electric motor is a widely known configuration, a detailed description and illustration are omitted.

[0038] The above-described transfer unit (170) includes a cylindrical transfer unit body (1710) and a spiral groove (1720) arranged in a spiral shape on the outer surface of the transfer unit body (1710) and recessed to a specific depth. Support rings (1730) are provided on both ends of the transfer unit body (1710) to rotatably support the transfer unit body (1710) within the housing (150). The support ring (1730) may include a widely known bearing, etc., and since this configuration is widely known, a detailed description and illustration thereof will be omitted.

[0039] The coater (C) is loaded onto a moving block (160), and the moving block (160) is movably provided on one side of a housing (150). The housing (150) has a hollow shape and includes a housing body (1510) that is open on both sides in the longitudinal direction of the transfer unit body (1710), and a support (1520) that is disposed inside the housing body (1510) and supports the transfer unit body (1710). The support (1520) supports the bottom surface of the transfer unit body (1710) and may be formed to have a groove that matches the curvature of the transfer unit body (1710) in order to support it more stably.

[0040] Meanwhile, since the above-mentioned coater (C) is also a widely known configuration, it is briefly indicated by a broken line in Fig. 3.

[0041] A first guide (1540) is provided on the upper surface of the housing body (1510). This first guide (1540) is arranged along the movement direction of the moving block (160). An open slot (1550) is formed on one side of the first guide (1540), and the open slot (1550) is arranged along the first guide (1540) and has a shape that opens to a certain width. The first guides (1540) may be provided as a pair, and the open slot (1550) may be formed between the pair of guides (1540).

[0042] The above moving block (160) includes a moving block body (1610) having a plate shape. A coater (C) is mounted on the moving block body (1610). A linkage bar (1620) is provided to extend downward on the lower surface of the moving block body (1610). The linkage bar (1620) passes through the open slot (1550) and is then inserted into the spiral groove (1720) of the transfer unit body (1710). That is, when the transfer unit body (1710) rotates, the linkage bar (1620) inserted into the spiral groove (1720) moves forward and backward, thereby moving the moving block body (1610) forward and backward. Protrusions (1630) are formed on both ends in the width direction of the moving block body (1610). The above protrusion (1630) is bent downward and is connected to the first guide (1540) in a male and female manner.

[0043] As described above, the linkage bar (1620) penetrates the open slot (1550) of the housing body (1510) and is inserted into the spiral groove (1720). At this time, the transfer unit body (1710) in which the spiral groove (1720) is formed is supported by the support member (1520). At this time, the side of the transfer unit body (1710) facing the power transmission unit (130) is exposed from the housing (150) and is then linked to the power transmission unit (130). At this time, the exposed transfer unit body (1710) is supported by the support member (140). The support member (140) includes a support member body (1410) installed on the base (110) and a through hole (1420) formed in the support member body (1410) and into which the transfer unit body (1710) is rotatably inserted. The transfer unit body (1710) is stably supported by this support member (140) and connected to the power transmission unit (130).

[0044] The power transmission unit (130) may include a first gear (1310) provided on the first shaft (SH1), and a second gear (1320) coupled with the first gear (1310) and interlocked with the transfer unit body (1710). The first gear (1310) and the second gear (1320) may use a worm wheel and a worm gear, as illustrated. Since these gears are widely known configurations, a description thereof will be omitted.

[0045] The operation process of the first transfer unit (100) described above will be described again. First, the first power supply unit (120) generates rotational force to rotate the first shaft (SH1). When the first shaft (SH1) rotates, the first gear (1310) rotates, thereby rotating the second gear (1320). When the second gear (1320) rotates, the transfer unit body (1710) rotates. At this time, since the linkage bar (1620) is inserted into the spiral groove (1720) formed in the rotating transfer unit body (1710), the linkage bar (1620) moves forward and backward by the rotation of the transfer unit body (1710), thereby moving the moving block (160) forward and backward. Since the coater (C) is loaded on the moving block (160), the coater (C) ultimately moves to adjust the horizontal position.

[0046] Although the horizontal position of the coater (C) is controlled by the first transfer unit (100), it is also possible to further include a second transfer unit (200) that moves the coater (C) forward and backward in the direction of the coating target (S), i.e., the height position. This second transfer unit (200) is provided in the moving block (160).

[0047] The second transport unit (200) includes a second power supply unit (220) provided on the moving block (160) to generate forward and backward power, a pair of guide plates (210) vertically arranged on the moving block (160), a coater lifting unit (250) that is coupled to the guide plate (210) to move up and down, and a pair of link units (LN) that are rotatably provided by being pin-coupled to the coater lifting unit (250). The pair of link units (LN) are respectively arranged on both sides (LN-1, LN-2) in the width direction of the coater lifting unit (250). A coater (C) is arranged on the coater lifting unit (250).

[0048] The above link unit (LN) may include a first link (230) and a second link (240) that are spaced apart from each other at a predetermined interval in the longitudinal direction of the coater raising / lowering unit (250). The upper end of the first link (230) or the second link (240) is moved forward and backward by the second power supply unit (220). The second power supply unit (220) may utilize a widely known hydraulic or pneumatic cylinder, and since the configuration of such a cylinder is a widely known technology, a detailed description and illustration are omitted. The second power supply unit (220) may be selectively linked to the first link (230) or the second link (240), and may also be linked to both the first link (230) and the second link (240).

[0049] The first link (230) includes a first link body (2310) having a shape bent at a specific angle, a first moving block (2320) pin-coupled to the lower end of the first link body (2310), and a first guide block (2330) positioned on the moving block (160) to guide the movement of the first moving block (2320). The first guide block (2330) is fixed to the moving block (160), and the first moving block (2320) can be male-female coupled to the first guide block (2300).

[0050] To this end, the first moving block (2320) may include a U-shaped first moving block body (2321) and an insertion pin (2322) connecting the first moving block body (2321). The first link body (2310) is pin-coupled to the insertion pin (2322). The first guide block (2430) may have a U-shape, but the upper end may be bent inward to prevent the first moving block body (2321) from being detached.

[0051] The second link (240) includes a second link body (2410) having a symmetrical shape with the first link body (2310), a second moving block (2420) pin-coupled to the lower end of the second link body (2410), and a second guide block (2430) arranged on the moving block (160) to guide the movement of the second moving block (2420), and the second moving block (2420) is male-female coupled to the second guide block (2430). The second moving block (2420) may also include a second moving block body (2421) having a U-shape, and an insertion pin (2422) connecting the second moving block body (2421). The second link body (2410) is pin-coupled to the insertion pin (2422). In addition, the second guide block (2430) may also have a U-shape, but the upper end may be bent inward to prevent the second moving block body (2421) from being detached.

[0052] The guide plate (210) is placed between the first guide block (2330) and the second guide block (2430), and the raising and lowering of the coater raising and lowering unit (250) is guided by the guide plate (210).

[0053] By this configuration, the upper part of the first link (230) is moved forward or backward by the second power supply unit (220), and thereby the cotter lifting / lowering unit (250) is combined with the guide plate (210) to be raised / lowered, and at the same time, the second link (240) is operated in the opposite direction to the first link (230), which will be described separately.

[0054] The above-mentioned cotter elevating / lowering unit (250) may include a pair of elevating / lowering plates (2510) spaced apart in the width direction of the moving block (160) and a connecting bar (2520) connecting the elevating / lowering plates (2510), and a cotter (C) is placed on the connecting bar (2520).

[0055] The above-mentioned lifting plate (2510) includes a lifting plate main body (2511) in the shape of a plate, a guide protrusion (2512) extending upwardly from the upper side of the lifting plate main body (2511), and a protruding pin (2513) protruding from the lifting plate main body (2511) and pin-connecting the first link (230) and the second link (240). At this time, a guide groove (2513) is formed in the lifting plate main body (2511) and the guide protrusion (2512) in the lifting and lowering direction. The protruding pin (2513) can be respectively coupled to the through hole (2311) of the first link (230) and the through hole (2411) of the second link (240).

[0056] By this configuration, the first link (230) and the second link (240) are pin-connected to the lifting plate body (2511), and the lifting plate body (2511) is raised and lowered by the forward and backward movement of the first link (230). In addition, the second link (240) is operated in the opposite direction to the first link (230) in conjunction with the raising and lowering of the lifting plate body (2511).

[0057] At this time, the guide plate (210) is coupled to the guide groove (2513) of the main body (2511) of the lifting plate. Accordingly, the main body (2511) of the lifting plate is guided to move up and down by the guide plate (210), thereby realizing stable movement, and the coater (C) is moved forward and backward in the direction of the coating target (S) by the moving up and down of the main body (2511) of the lifting plate.

[0058] Referring again to Fig. 11, when the upper part of the first link (230) moves to the left in the drawing by the second power supply unit (not shown) as shown in Fig. 11(a), the first link (230) rotates counterclockwise. Accordingly, the first moving block (2320) moves to the right in the drawing, and the elevating plate body (2511) is lowered. At this time, the elevating plate body (2511) is lowered while being coupled to the guide plate (210), thereby realizing a stable descent. Meanwhile, due to the descent of the elevating plate body (2511), the second link (240) rotates in the opposite direction, clockwise, and the second moving block (2420) moves to the left in the drawing.

[0059] As illustrated in Fig. 11(b), when the upper part of the first link (230) moves to the right in the drawing by the second power supply unit, the first link (230) rotates clockwise and the first moving block (2320) moves to the left in the drawing. With this configuration, the elevating plate body (2511) rises. At this time, as described above, the elevating plate body (2511) moves while being coupled to the guide plate (210), so that a stable rise is realized. In addition, the second link (240) rotates counterclockwise by the rising of the elevating plate body (2511), and the second moving block (2420) moves to the right in the drawing.

[0060] As shown in Fig. 11(c), if the first link (230) is additionally moved to the right in the drawing, the first link (230) additionally rotates clockwise, causing the lifting plate body (2511) to additionally rise. In addition, the second link (240) also additionally rotates clockwise.

[0061] As described above, the lifting plate body (2511) is raised and lowered by the forward and backward movement of the first link (230), thereby allowing the position of the cotter to be adjusted.

[0062] At this time, the first link (230) is moved forward and backward by the second power supply unit (220), and the second power supply unit (220) may use a hydraulic or pneumatic cylinder as described above. This second power supply unit (220) may include a power generation unit (2210) that generates forward and backward power as illustrated in FIG. 12, and an operating rod (2220) that moves forward or backward by the power generation unit (2210). At this time, since the angle of the second power supply unit (220) changes due to the rotation of the first link (230), in order to respond to this, a bracket (2340) and a connecting pin (2350) may be formed on the first link (230), and then the operating rod (2220) may be pin-coupled to the connecting pin (2350). Meanwhile, the power generation unit (2210) may be supported by a general support unit (260), and at this time, the power generation unit (2210) may be pin-coupled with the support unit (260) to respond to the angle change of the first link (230).

Claims

1. It includes a drying module (300) that is stacked in multiple stages in the height direction, a supply unit (R1) that is arranged on one side of the drying module (300) and supplies a coating target (S), a winding unit (R2) that is arranged on the other side of the drying module (300) and on which the dried coating target (S) is wound, and a coating module (CM) that is arranged between the supply unit (R1) and the drying module (300) and coats the coating target (S). The above coating module (CM) includes a coater (C) arranged on one side of the drying module (300) to coat the coating object (S), The above drying module (300) includes a plurality of module cases (310) arranged in multiple stages in the height direction, a plurality of rollers (320) provided on the inside and outside of the module cases (310) to transport the coating object (S), and a plurality of drying units (DD) arranged inside the module cases (310) to dry the coating object (S). A multi-stage secondary battery coating device in which the above-mentioned plurality of rollers (320) are arranged in multiple layers in the height direction while the coating target (S) moves forward and backward repeatedly in the horizontal direction.

2. In paragraph 1, The above coating module (CM) further includes a first transfer unit (100) arranged on one side of the coater (C) to adjust the horizontal position of the coater (C), The first transfer unit (100) includes a plate-shaped base (110) fixed to one side of the module case (310), a housing (150) fixed to the base (110), a moving block (160) movably provided on one side of the housing (150) and on which a coater (C) is loaded, a transfer unit (170) provided inside the housing (150) and moving the moving block (160), a first power supply unit (120) fixed to one side of the base (110) and supplying rotational force, a first shaft (SH1) rotated by the first power supply unit (120), and a power transmission unit (130) provided between the first shaft (SH1) and the transfer unit (170) and transmitting the rotational force to the transfer unit (170). The above-mentioned transfer unit (170) is a multi-stage secondary battery coating device including a cylindrical transfer unit body (1710), a spiral groove (1720) arranged in a spiral shape on the outer surface of the transfer unit body (1710) and recessed to a specific depth, and a support ring (1730) arranged on both sides of the transfer unit body (1710) and rotatably supporting the transfer unit body (1710) within a housing (150).

3. In paragraph 2, The housing (150) has a hollow shape and includes a housing body (1510) with both longitudinal sides of the transport body (1710) open, a support (1520) disposed inside the housing body (1510) and supporting the transport body (1710), a first guide (1540) disposed on the upper surface of the housing body (1510) and arranged along the moving direction of the moving block (160), and an open slot (1550) disposed along one side of the first guide (1540) and open with a predetermined width. The above moving block (160) has a plate shape and includes a moving block body (1610) on which a coater (C) is loaded, a linkage bar (1620) that is positioned downward on the lower side of the moving block body (1610) and inserted into a spiral groove (1720) of the transfer unit body (1710), and a protrusion (1630) that is bent downward at both ends in the width direction of the moving block body (1610) and is coupled to the first guide (1540). The above linkage bar (1620) penetrates the open slot (1550) of the housing body (1510) and is inserted into the spiral groove (1720). The side of the transfer unit body (1710) supported by the above-mentioned support member (1520) toward the power transmission unit (130) is exposed from the housing (150) and is linked to the power transmission unit (130). The above-mentioned exposed transport body (1710) is supported by a support member (140), and the support member (140) includes a support member body (1410) installed on a base (110), and a through hole (1420) formed in the support member body (1410) into which the transport member body (1710) is rotatably inserted. The power transmission unit (130) is a multi-stage secondary battery coating device including a first gear (1310) provided on the first shaft (SH1) and a second gear (1320) coupled with the first gear (1310) and interlocked with the transfer unit body (1710).

4. In paragraph 2, It further includes a second transport unit (200) provided in the above moving block (160) to move the coater (C) back and forth in the direction of the coating target (S), The second transport unit (200) includes a second power supply unit (220) provided on the moving block (160) to generate forward and backward power, a pair of guide plates (210) vertically arranged on the moving block (160), a coater lifting unit (250) that is coupled to the guide plate (210) to move up and down, and a pair of link units (LN) that are rotatably provided by being pin-coupled to both sides in the width direction of the coater lifting unit (250). A coater (C) is placed in the above coater lifting / lowering part (250). The above link part (LN) includes a first link (230) and a second link (240) that are arranged at a constant interval in the longitudinal direction of the coater lifting / lowering part (250), and the upper part of the first link (230) or the second link (240) is moved forward and backward by the second power supply part (220). The first link (230) includes a first link body (2310) having a shape bent at a specific angle, a first moving block (2320) pin-coupled to the lower end of the first link body (2310), and a first guide block (2330) positioned on the moving block (160) to guide the movement of the first moving block (2320), and the first moving block (2320) is male-female coupled to the first guide block (2330). The second link (240) includes a second link body (2410) having a symmetrical shape with the first link body (2310), a second moving block (2420) pin-coupled to the lower end of the second link body (2410), and a second guide block (2430) arranged on the moving block (160) to guide the movement of the second moving block (2420), and the second moving block (2420) is male-female coupled to the second guide block (2430). The guide plate (210) is placed between the first guide block (2330) and the second guide block (2430), A multi-stage secondary battery coating device in which the upper part of the first link (230) is moved forward or backward by the second power supply unit (220), thereby causing the coater lifting / lowering unit (250) to be combined with the guide plate (210) and raised / lowered, and at the same time, the second link (240) is operated in the opposite direction to the first link (230).

5. In paragraph 4, The above-mentioned cotter elevating / lowering part (250) includes a pair of elevating / lowering plates (2510) spaced apart in the width direction of the moving block (160) and a connecting bar (2520) connecting the elevating / lowering plates (2510). A cotter (C) is placed on the above connecting bar (2520), The above-mentioned lifting plate (2510) includes a lifting plate body (2511) in the shape of a plate, a guide protrusion (2512) extending upwardly on the upper side of the lifting plate body (2511), and a protruding pin (2513) protruding from the lifting plate body (2511) and pin-connecting the first link (230) and the second link (240). A guide groove (2513) is formed in the upward and downward direction on the above-mentioned upper and lowering plate body (2511) and guide protrusion (2512). The first link (230) and the second link (240) are pin-connected to the main body (2511) of the lifting plate, and the main body (2511) of the lifting plate moves up and down by the forward and backward movement of the first link (230). However, the second link (240) operates in the opposite direction to the first link (230) in conjunction with the movement of the main body (2511). The above-mentioned upper and lowering plate body (2511) is a multi-stage secondary battery coating device that moves the coater (C) forward and backward in the direction of the coating target (S) by moving up and down while the guide plate (210) is coupled to the guide groove (2513).

Images