OFFSET ADJUSTMENT DEVICE AND COATING APPARATUS EQUIPPED WITH THE SAME

Abstract

An offset adjustment device capable of stably adjusting the offset between components in a coating agent application device that discharges a coating agent, and a coating device equipped with the same are provided. An offset adjustment device according to one aspect of the present invention is an offset adjustment device configured for aligning a spacer provided in a slot die of a coating agent application device configured to apply a coating agent to a substrate, and includes an offset measurement module configured to measure an offset between a die lip of the slot die and the spacer, and an offset adjustment module coupled to the spacer and configured to align the spacer according to the measured offset.

Description

[Technical field]

[0001] This application claims priority to Korean Patent Application No. 10-2022-0069479, filed on June 8, 2022, the entire contents of which are incorporated herein by reference in their entirety in the specification and drawings.

[0002] The present invention relates to an offset adjustment device and a coating apparatus equipped with the same, and more particularly, to an offset adjustment device configured to stably adjust the offset between components in a coating agent application device that discharges a coating agent, and a coating apparatus equipped with the same. [Background technology]

[0003] 2. Description of the Related Art As technological development and demand for mobile devices increases, the demand for secondary batteries as energy sources is rapidly increasing. Such secondary batteries essentially include an electrode assembly, which is a power generating element.

[0004] The electrode assembly may be formed into a desired shape by first coating a positive electrode current collector with an electrode active material slurry and then laminating the positive and negative electrodes on both sides of a separator. The secondary battery may be formed by placing the electrode assembly in a battery case, injecting an electrolyte, and then sealing the battery case.

[0005] In order to make the charge / discharge characteristics of the secondary battery uniform, the electrode active material slurry must be uniformly coated on the positive electrode current collector and the negative electrode current collector. In this case, the electrode active material slurry is coated on the positive electrode current collector and the negative electrode current collector using a coating device including a slot die that discharges a coating agent such as the electrode active material slurry, and a coating roll that can run a substrate such as a positive electrode current collector and a negative electrode current collector. The coating device rotates the coating roll to apply the coating agent to one or both sides of the substrate, and then dries the substrate coated with the coating agent. The slot die may also include a spacer, which can adjust the width at which the coating agent is discharged from the slot die.

[0006] In such a coating device, if the offset between the spacer and the die lip at the tip of the slot die varies along the length of the slot die due to improper alignment of the spacer, the left and right discharge width of the coating material from the slot die may vary greatly. Also, if the spacer is aligned to have an offset larger than the set offset, there is a problem that the coating width varies due to imperfections in the coating interface.

[0007] To solve this problem, conventional coating apparatuses are configured to adjust the offset by pulling the spacer to the opposite side of the die lip using a block, but in this case, it is difficult to quantitatively measure the offset, and if the operator has low skill, the spacer alignment cannot be performed accurately. Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention has been made to solve the problems described above, and the problem that the present invention aims to solve is to provide an offset adjustment device that can stably adjust the offset between components in a coating agent application device that discharges a coating agent, and a coating device equipped with the same.

[0009] However, the technical problems that the present invention aims to solve are not limited to those mentioned above, and other problems not mentioned will become apparent to those skilled in the art from the following description of the invention. [Means for solving the problem]

[0010] In order to solve the above problem, an offset adjustment device according to one aspect of the present invention is configured for aligning a spacer provided in a slot die of a coating agent application device configured to apply a coating agent to a substrate, and includes an offset measurement module configured to measure an offset between a die lip of the slot die and the spacer, and an offset adjustment module coupled to the spacer and configured to align the spacer according to the measured offset.

[0011] In one embodiment, the offset adjustment device may be configured to couple to a side of the slot die opposite the die lip in a direction of discharge of the coating material.

[0012] In one embodiment, the offset measurement module includes a support bracket mounted to the slot die, and an indicator supported by the support bracket and configured to contact the slot die and the spacer to measure the offset.

[0013] In one embodiment, the offset adjustment module includes a support portion provided on the slot die, and a moving stage portion supported by the support portion and configured to align the spacer in response to movement in the discharge direction of the coating material.

[0014] In one embodiment, the offset adjustment module is provided on the moving stage part and further includes an offset adjustment guide part coupled to the spacer, and an adjustment part configured to adjust the driving of the moving stage part in the discharge direction of the coating agent.

[0015] In one embodiment, the spacer may include a hole in a portion formed to protrude outward from the slot die, and the offset adjustment guide portion may be configured to be coupled to the hole of the spacer.

[0016] In one embodiment, the movable stage unit includes a first block coupled to the support unit, a second block coupled to an upper portion of the first block and configured to move in a discharge direction of the coating agent by driving the adjustment unit, and a connection unit coupled to the adjustment unit and configured to connect the second block and the adjustment unit, and the offset adjustment guide unit may be provided on an upper portion of the second block.

[0017] In one embodiment, the second block includes an insertion portion formed at a lower end so as to protrude horizontally inward and configured to be inserted into an upper end of the first block, and the first block includes a recess formed at an upper end so as to be recessed horizontally inward and configured to accommodate the insertion portion, and the recess may be configured to guide movement of the second block in a discharge direction of the coating agent in response to driving of the adjustment portion.

[0018] In one embodiment, the offset adjustment module further includes a movement limiting portion fixed to the first block, the movement limiting portion having a protruding member formed to protrude from a side surface of the second block and a guide hole configured to guide movement of the protruding member in a discharge direction of the coating agent, the protruding member being configured to limit movement of the coating agent in the discharge direction by abutting against one end or the other end of the guide hole.

[0019] In one embodiment, the offset adjustment device may further include a fixing member configured to fix the offset adjustment device to one side of the slot die.

[0020] In one embodiment, the offset adjustment device may be provided in a plurality of units in the longitudinal direction of the slot die.

[0021] In one embodiment, the offset adjustment devices may be provided along a longitudinal direction of the slot die, on either side of a longitudinal center of the slot die.

[0022] In one embodiment, the multiple offset adjustment devices may be provided symmetrically in the longitudinal direction of the slot die with respect to the center of the slot die in the longitudinal direction.

[0023] In one embodiment, the spacing between the offset adjustment devices may be configured to be adjustable relative to one another.

[0024] Further, a coating apparatus according to another aspect of the present invention for solving the above-mentioned problems includes the offset adjustment device as described above and a coating agent application device configured to apply a coating agent to a substrate. Effect of the Invention

[0025] According to such an embodiment of the present invention, the offset between the die lip of the slot die and the spacer can be quantitatively measured. In addition, the offset can be measured in real time. In addition, since the spacer can be aligned by an offset adjustment module coupled to the spacer according to the measured offset, there is an advantage that the spacer can be aligned more precisely. This can minimize left-right alignment deviation in the spacer, and minimize deviation in left-right discharge width of the coating material from the slot die. Therefore, by unifying the left-right offset, the pattern width of each lane can be made uniform when coating a substrate in multiple lanes.

[0026] In addition, since the offset adjustment module and the spacer can be stably connected, the spacer can be more accurately aligned in the discharging direction of the coating agent.

[0027] In addition, since the spacer is connected to the offset adjustment module, even when the first and second dies that may be included in the slot die are recombined after the spacer is aligned, it is possible to minimize re-misalignment of the spacer.

[0028] In addition, once it is confirmed that the spacers are aligned to have an offset larger than the set offset, the offset can be easily adjusted by operation, so that the problem of coating width variations due to defects in the coating interface can be more easily solved.

[0029] In addition, various other effects can be achieved by many embodiments of the present invention. Many of these effects of the present invention will be described in detail in each embodiment, but the description of effects that can be easily understood by those skilled in the art will be omitted.

[0030] The following drawings attached to this specification illustrate preferred embodiments of the present invention and, together with the detailed description of the invention, serve to further understand the technical ideas of the present invention. Therefore, the present invention should not be interpreted as being limited only to the matters described in the drawings. [Brief description of the drawings]

[0031] [Figure 1] FIG. 2 shows the overall shape of a coating apparatus according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a front view of the coating apparatus of FIG. 1. [Diagram 3] FIG. 2 shows the upper side of the coating apparatus of FIG. [Figure 4] FIG. 2 shows the upper side of a portion of the coating apparatus of FIG. [Diagram 5] FIG. 2 is a side view of the coating apparatus of FIG. [Figure 6] FIG. 2 is a detailed view of an offset adjustment device provided in the coating apparatus of FIG. 1. [Figure 7] 7 is a diagram showing in detail an offset adjustment module provided in the offset adjustment device of FIG. 6. [Figure 8] FIG. 8 is an exploded perspective view of the offset adjustment module of FIG. 7. [Figure 9] FIG. 8 is a diagram showing a portion of the offset adjustment module of FIG. 7. [Figure 10] 8 is a diagram showing another part of the offset adjustment module in FIG. 7. [Figure 11] 8 is a diagram showing a state in which the offset adjustment module of FIG. 7 aligns a spacer. FIG. [Figure 12] FIG. 13 is a diagram showing an offset adjustment apparatus according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0032] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings. Prior to this, the terms and words used in the present specification and claims are not to be construed as being limited to their ordinary and dictionary meanings, but are to be construed as having meanings and concepts according to the technical ideas of the present invention, in accordance with the principle that the inventors themselves can appropriately define the concepts of terms in order to best describe the invention.

[0033] Therefore, it should be understood that the configurations shown in the embodiments described in this specification are merely the most preferred embodiments of the present invention and do not represent the entire technical idea of ​​the present invention, and therefore there may be various equivalents and modifications that can be substituted therefor at the time of this application.

[0034] FIG. 1 is a diagram showing the overall shape of a coating apparatus 1 according to one embodiment of the present invention, FIG. 2 is a diagram showing the front of the coating apparatus 1 of FIG. 1, FIG. 3 is a diagram showing the upper side of the coating apparatus 1 of FIG. 1, FIG. 4 is a diagram showing the upper side of a portion of the coating apparatus 1 of FIG. 1, and FIG. 5 is a diagram showing the side of the coating apparatus 1 of FIG. 1.

[0035] In an embodiment of the present invention, the illustrated X-axis direction can indicate the direction in which the coating agent is discharged, the Y-axis direction can indicate the longitudinal direction of the slot die 22 which is perpendicular to the X-axis direction on a horizontal plane (XY plane), and the Z-axis direction can indicate the up-down direction which is perpendicular to both the X-axis direction and the Y-axis direction.

[0036] 1 to 5, a coating apparatus 1 according to one embodiment of the present invention can include an offset adjustment device 10 and a coating agent application device 20.

[0037] The offset adjustment apparatus 10 may be configured to adjust the offset between components of the coating material application apparatus 20 .

[0038] The coating application apparatus 20 may include a slot die 22 and a spacer 24 .

[0039] The slot die 22 may be configured to apply a coating agent (not shown) to a substrate (not shown). For example, the slot die 22 may eject the coating agent to the outside through a discharge port formed in a slot shape. Such a slot die 22 may apply the coating agent to the substrate to form a coating layer. In addition, the slot die 22 may be connected to an external coating agent supplying device (not shown) to receive the coating agent.

[0040] The substrate may be wound around a coating roll (not shown) and supplied. Such a substrate may be, but is not limited to, a current collector for forming an electrode (positive or negative electrode) of a secondary battery. As another example, the substrate may be a substrate for manufacturing other components of a secondary battery, such as a separator substrate for manufacturing a separator having a coating slurry, in which a polymer binder, a dispersant, a heat-resistant filler, etc., is coated on one or both sides of the separator substrate, or another substrate for manufacturing other components formed on a substrate with a different coating layer. Also, the coating agent may be a coating material applied to a substrate. For example, the coating agent may be a positive electrode active material slurry applied to a positive electrode current collector.

[0041] Specifically, the slot die 22 may include a first die 22a and a second die 22b.

[0042] The first die 22a may be formed in a substantially hexahedral shape, and a space may be formed inside the first die 22a to store the coating agent supplied from a coating agent supplying device.

[0043] The second die 22b may be formed in a substantially hexahedral shape and disposed to face the first die 22a in the vertical direction. For example, the second die 22b may be disposed above the first die 22a.

[0044] The spacer 24 may be provided in the slot die 22. Such a spacer 24 may be configured to adjust the width at which the coating agent is discharged from the slot die 22. Specifically, the spacer 24 may be disposed between the first die 22a and the second die 22b in the vertical direction. As an example, the spacer 24 may be formed into a substantially "U" shape by cutting one side toward the die lip L described later, and may be coupled to the first die 22a. In the example shown in FIG. 4, the spacer 24 may be configured to include a protrusion in the center so that two lanes can be coated simultaneously. In this way, the number of lanes can be adjusted by adjusting the number of protrusions of the spacer 24, so that multi-lane coating is possible by including a spacer 24 that can coat two or more lanes.

[0045] The first die 22a and the second die 22b may be coupled to each other in the vertical direction via a bolt C. At this time, the bolt C may penetrate a part of the spacer 24 to couple the first die 22a and the second die 22b to each other in the vertical direction.

[0046] In addition, when the first die 22a and the second die 22b are combined, a die lip L may be formed at the end of the slot die 22. Specifically, the die lip L may be formed to protrude a predetermined length from the end of the slot die 22 in the discharging direction (X-axis direction) of the coating agent. Although not shown, the slot die 22 may be disposed such that the die lip L is adjacent to the side of the coating roll. In this case, the slot die 22 may be referred to as a horizontal die. Alternatively, the slot die 22 may be disposed such that the die lip L is adjacent to the lower part of the coating roll. In this case, the slot die 22 may be referred to as a vertical die.

[0047] Such a slot die 22 can eject a coating agent through the die lip L onto a substrate wrapped around the outer surface of a coating roll.

[0048] In the above embodiment, the spacer 24 is interposed between the first die 22a and the second die 22b to define one slot, so in this case, the slot die 22 may be a single slot die. As an example, the slot die 22 may further include one die and one spacer in addition to the first die 22a and the second die 22b. In this case, the slot die 22 may define a slot between the two dies, for a total of two slots, so that it may be a dual slot die. The number of slots in the slot die 22 may be easily changed in this manner.

[0049] The offset adjustment apparatus 10 may include an offset measurement module 100 and an offset adjustment module 200 .

[0050] The offset measurement module 100 may be configured to measure an offset between the die lip L of the slot die 22 and the spacer 24. As an example, the offset measurement module 100 may be a dial gauge. Such a dial gauge may be configured to compare a distance difference between at least two or more objects.

[0051] The offset adjustment module 200 may be configured to be coupled to the spacer 24 and align the spacer 24 according to the offset measured above. At this time, the offset adjustment module 200 may be configured to align the spacer 24 in a state in which the bolt C is removed from the slot die 22 and the first die 22a and the second die 22b are released from the coupling.

[0052] The offset measurement module 100 and the offset adjustment module 200 may be integrally provided in the slot die 22. That is, the offset adjustment module 200 may align the spacer 24 to minimize a distance between the die lip L and the end of the spacer 24 in the discharging direction (X-axis direction) of the coating agent according to the offset between the die lip L of the slot die 22 and the spacer 24 measured by the offset measurement module 100.

[0053] According to this embodiment of the present invention, the offset between the die lip L of the slot die 22 and the spacer 24 can be quantitatively measured. In addition, the offset can be measured in real time. In addition, since the offset adjustment module 200 coupled to the spacer 24 can align the spacer 24 according to the measured offset, there is an advantage that the spacer 24 can be aligned more precisely. This can minimize the left-right alignment deviation of the spacer 24, and minimize the left-right discharge width deviation of the coating material from the slot die 22. Therefore, by unifying the left-right offset, the pattern width of each lane can be made uniform when coating a substrate in multiple lanes.

[0054] 1 to 5 again, the offset adjustment device 10 may be configured to be coupled to one side of the slot die 22 located opposite the die lip L in the discharging direction of the coating material. In this case, the one side of the slot die 22 located opposite the die lip L may be configured to be flat.

[0055] That is, the offset measurement module 100 and the offset adjustment module 200 of the offset adjustment device 10 may be integrally provided on the slot die 22 on the opposite side of the die lip L through which the coating agent is discharged from the slot die 22. As an example, the offset measurement module 100 and the offset adjustment module 200 may be coupled to one side of the first die 22a.

[0056] According to this embodiment, the spacer 24 can be aligned on the side opposite the die lip L, thereby making it possible to align the spacer 24 more stably than when the spacer 24 is aligned on the side of the die lip L formed protruding from the tip of the slot die 22.

[0057] FIG. 6 is a detailed diagram showing the offset adjustment device 10 provided in the coating apparatus 1 of FIG.

[0058] With reference to FIGS. 1-6, the offset measurement module 100 may include a support bracket 120 and an indicator 140 .

[0059] The support bracket 120 may be provided on the slot die 22. As an example, the support bracket 120 may be coupled to one side of the first die 22a.

[0060] The indicator 140 may be supported by the support bracket 120 and configured to contact the slot die 22 and the spacer 24 to measure the offset between the die lip L of the slot die 22 and the spacer 24 .

[0061] Specifically, the indicator 140 may include a probe 142 and a scale plate 144 .

[0062] The probe 142 may be configured to contact the slot die 22 and the spacer 24 and compare a distance difference in the discharging direction of the coating material between the slot die 22 and the spacer 24. As an example, the probe 142 may contact one side surface of the first die 22a and the spacer 24 in the discharging direction of the coating material, respectively, and measure an offset between the die lip L of the slot die 22 and the spacer 24.

[0063] The scale plate 144 can externally display the offset between the die lip L of the slot die 22 and the spacer 24 measured by the gauge 142.

[0064] As an example, the scale of the scale plate 144 can be set to "0" with the probe 142 in contact with one side surface of the first die 22a of the reference surface. Then, the probe 142 can come into contact with the spacer 24.

[0065] In this state, if the scale of the scale plate 144 changes, this can be determined as an offset between the die lip L of the slot die 22 and the end of the spacer 24. That is, if a distance difference occurs in the discharging direction of the coating agent between one side of the first die 22a and the end of the spacer 24 located opposite the die lip L, the same distance difference may occur between the die lip L of the slot die 22 and the end of the spacer 24 at the portion where the die lip L of the slot die 22 is located. Therefore, the distance difference occurring in the discharging direction of the coating agent between one side of the first die 22a and the end of the spacer 24 located opposite the die lip L can be determined as an offset between the die lip L of the slot die 22 and the spacer 24.

[0066] According to such an embodiment, the offset between the die lip L of the slot die 22 and the spacer 24 can be measured in a simple manner, thereby reducing the time required to align the spacer 24.

[0067] 7 is a detailed diagram of the offset adjustment module 200 provided in the offset adjustment device 10 of FIG. 6, FIG. 8 is an exploded perspective view of the offset adjustment module 200 of FIG. 7, FIG. 9 is a diagram showing a portion of the offset adjustment module 200 of FIG. 7, FIG. 10 is a diagram showing another portion of the offset adjustment module 200 of FIG. 7, and FIG. 11 is a diagram showing the offset adjustment module 200 of FIG. 7 aligning the spacer 24.

[0068] At this time, the offset between the die lip L of the slot die 22 and the spacer 24 is exemplarily indicated by the reference character "O" in Fig. 11. Also, in Fig. 11, the second die 22b is omitted from illustration.

[0069] 7 to 11, the offset adjustment module 200 can include a support portion 210 and a motion stage portion 220.

[0070] The support 210 may be provided on the slot die 22. As an example, the support 210 may be coupled to one side of the first die 22a.

[0071] The moving stage unit 220 can be supported by the support unit 210. The moving stage unit 220 can be configured to align the spacer 24 in response to movement in the discharging direction (X-axis direction) of the coating agent. Such a moving stage unit 220 can be connected to the spacer 24.

[0072] In this way, the movable stage portion 220, which can move in the direction of discharging the coating agent, aligns the spacer 24 while being connected to the slot die 22 by the support portion 210, which has the advantage that the spacer 24 can be aligned more stably.

[0073] In addition, the offset adjustment module 200 may further include an offset adjustment guide unit 230 and an adjustment unit 240.

[0074] The offset adjustment guide unit 230 may be provided on the moving stage unit 220 and coupled to the spacer 24. The offset adjustment guide unit 230 may be provided extending from the upper side of the moving stage unit 220 in the vertical direction.

[0075] The adjustment unit 240 may be configured to adjust the drive of the moving stage unit 220 in the discharging direction of the coating agent. Specifically, the adjustment unit 240 may be configured to be driven in the discharging direction (X-axis direction) of the coating agent and adjust the movement of the moving stage unit 220 in the discharging direction of the coating agent. As an example, the adjustment unit 240 may be configured to adjust the movement of the moving stage unit 220 at intervals of approximately 0.001 mm, but is not limited thereto.

[0076] Such an embodiment allows for finer alignment of the spacers 24 in the ejection direction of the coating agent.

[0077] 7 to 11, the spacer 24 may include a hole H in the portion formed to protrude outwardly of the slot die 22.

[0078] In addition, the offset adjustment guide part 230 may be configured to be coupled to the hole H of the spacer 24. At this time, the offset adjustment guide part 230 may be coupled to the hole H of the spacer 24 in the up-down direction. In addition, the outer surface of the offset adjustment guide part 230 may be provided with a shape corresponding to the hole H of the spacer 24.

[0079] According to this embodiment, the moving stage unit 220 and the spacer 24 can be stably connected, so that the spacer 24 can be more accurately aligned in the discharging direction of the coating agent.

[0080] In addition, since the spacer 24 is coupled to the offset adjustment guide unit 230 provided on the movable stage unit 220, even when the first die 22a and the second die 22b are coupled again after the spacer 24 is aligned, it is possible to minimize misalignment of the spacer 24.

[0081] In addition, once it is confirmed that the spacer 24 is aligned to have an offset larger than the set offset, the offset can be easily adjusted by operation, so that the problem of coating width variations due to defects in the coating interface can be more easily solved.

[0082] For example, when forming electrode active material layer patterns on both sides of a current collector, it is preferable that the widthwise end of the electrode active material layer pattern formed on the upper surface of the current collector and the widthwise end of the electrode active material layer pattern formed on the lower surface of the current collector are aligned in the vertical direction. In addition, the variation in the width between the ends is managed as a quality index called mismatch. The mismatch is an important item to be managed since it is also related to the safety issue of secondary batteries. If the left and right offset changes due to misalignment of the spacers 24 or the spacers 24 are aligned to have an offset larger than the set offset, such mismatch becomes worse, and it is difficult to manage the mismatch, especially when a wide current collector with an increased number of lanes is used. According to the embodiment of the present invention, it is easy to unify the left and right offsets and manage the set offset, so that the mismatch process capacity can be improved. In addition, since the offset can be quantitatively and real-timely measured and immediately managed and dealt with, it is not necessary to take measures such as dismantling the die block and reassembling the spacers after stopping coating, and the loss of condition adjustment can be reduced.

[0083] 7-11, the motion stage portion 220 can include a first block 222, a second block 224, and a connection portion 226.

[0084] The first block 222 may be coupled to the support 210. At this time, the first block 222 may be in a fixed state to the support 210.

[0085] The second block 224 may be coupled to an upper portion of the first block 222 and configured to move in a coating agent discharging direction as driven by the adjustment unit 240. Also, an offset adjustment guide unit 230 may be provided on an upper portion of the second block 224. The second block 224 may be configured to move in a coating agent discharging direction as driven by the adjustment unit 240 to align the spacers 24, as shown in FIGS. 7 and 8.

[0086] The connection part 226 may be coupled to the adjustment part 240 and configured to connect the second block 224 and the adjustment part 240. A part of the adjustment part 240 may be penetrated and coupled to the connection part 226. A fastening hole E may be formed in an upper part of the connection part 226. At this time, the second block 224 and the connection part 226 are connected by a fastening member B penetrating the second block 224 in the vertical direction being coupled to the fastening hole E.

[0087] Specifically, the adjustment portion 240 may include a drive portion 242 and a handle portion 244 . The driving portion 242 is a part of the adjustment portion 240, extends in the discharge direction of the coating agent, and may be disposed inside the first block 222. The driving portion 242 may be through-coupled to the connecting portion 226. As an example, the driving portion 242 may be coupled to the connecting portion 226 by a screw.

[0088] The handle portion 244 is connected to the driving portion 242, and can be controlled so that the driving portion 242 is rotated by an operator's operation to drive the driving portion 242 in the discharging direction of the coating agent. At this time, the driving portion 242 is driven in the discharging direction of the coating agent, and the connection portion 226 connected to the driving portion 242 can move in the discharging direction of the coating agent. This allows the second block 224 connected to the connection portion 226 to move in the discharging direction of the coating agent. As an example, the movement of the second block 224 in the discharging direction of the coating agent can be adjusted at intervals of approximately 0.001 mm.

[0089] In this way, since the spacer 24 can be aligned by the screw connection between the adjustment unit 240 and the moving stage unit 220, there is an advantage that the spacer 24 can be aligned more accurately even if the worker has low skill. Therefore, it is possible to reduce misalignment of the spacer 24 due to the worker's skill, and to improve workability.

[0090] In particular, the second block 224 may include an insert portion 224a. As an example, the insert portion 224a may be formed to extend in the discharging direction (X-axis direction) of the coating agent.

[0091] The insertion portion 224a may be formed at the bottom end thereof to protrude inward in the horizontal direction (Y-axis direction) and configured to be inserted into the top end of the first block 222.

[0092] The first block 222 may include a recess 222a. As an example, the recess 222a may be formed to extend in the discharging direction (X-axis direction) of the coating agent.

[0093] The recess 222a may be formed at the upper end of the first block 222 so as to be recessed inward in the horizontal direction (Y-axis direction) and configured to accommodate the insertion portion 224a. That is, the recess 222a of the first block 222 and the insertion portion 224a of the second block 224 may be formed in shapes corresponding to each other.

[0094] Furthermore, the recess 222a may be configured to guide the movement of the second block 224 in the discharging direction of the coating agent in response to the driving of the adjustment portion 240.

[0095] According to this embodiment, the movement of the second block 224 in the discharging direction of the coating agent in response to the driving of the adjustment portion 240 may be more stable, thereby enabling more stable and accurate alignment of the spacer 24.

[0096] 7 to 11, the offset adjustment module 200 may further include a protruding member 250 and a movement limiter 260.

[0097] The protruding member 250 may be formed to protrude from a side surface of the second block 224. As an example, the protruding member 250 may be formed to protrude from a side surface of the second block 224 in the horizontal direction (Y-axis direction).

[0098] The movement limiting portion 260 may include a guide hole G configured to guide the movement of the protruding member 250 in the discharging direction of the coating agent. The protruding member 250 may be inserted in the horizontal direction (Y-axis direction) into such a guide hole G. In addition, the movement limiting portion 260 may be fixed to the first block 222. As an example, the guide hole G may be configured to extend in the discharging direction of the coating agent (X-axis direction).

[0099] Furthermore, the protruding member 250 can be configured to limit the movement in the discharging direction of the coating agent by abutting against one end or the other end of the guide hole G. That is, the protruding member 250 can limit the movement range of the second block 224 by abutting against one end or the other end of the guide hole G during the process of the second block 224 moving in the discharging direction of the coating agent.

[0100] This can prevent the second block 224 connected to the spacer 24 via the offset adjustment guide portion 230 from moving excessively in the coating agent discharge direction, thereby preventing the spacer 24 from being damaged.

[0101] 1 to 4, the offset adjustment device 10 may further include a fixing member F.

[0102] The fixing member F may be configured to fix the offset adjustment device 10 to one side of the slot die 22.

[0103] Specifically, the fixing member F can fix the offset measurement module 100 and the offset adjustment module 200 to opposite sides of the die lip L in the slot die 22. As an example, the fixing member F can be coupled to one side of the first die 22a.

[0104] More specifically, the fixing member F may fix the support bracket 120 of the offset measurement module 100 and the support portion 210 of the offset adjustment module 200 to one side of the first die 22a. At this time, the fixing member F may support the lower portions of the support bracket 120 and the support portion 210.

[0105] As an example, the fixing member F may be configured to include a magnetic material and configured to be detachable from the slot die 22. In this case, the support bracket 120 and the support portion 210 may be configured to include a metallic material.

[0106] According to this embodiment, the offset adjustment device 10 can be stably fixed to the slot die 22 during the alignment process of the spacer 24. This minimizes the influence of vibrations in the working space in which the slot die 22 is arranged, and allows the alignment of the spacer 24 to be performed more stably.

[0107] 1 to 4, a plurality of offset adjustment devices 10 can be provided in the longitudinal direction (Y-axis direction) of the slot die 22.

[0108] According to this configuration, the spacers 24 can be aligned at a plurality of positions in the longitudinal direction of the slot die 22, so that the spacers 24 can be aligned more quickly and accurately.

[0109] In addition, since the spacer 24 can be connected to the offset adjustment guide portion 230 at multiple positions in the longitudinal direction of the slot die 22, even when the spacer 24 is aligned and then re-connected between the first die 22a and the second die 22b, misalignment of the spacer 24 can be further minimized.

[0110] The above-mentioned plurality of offset adjustment devices 10 may be provided along the longitudinal direction of the slot die 22 on both sides of the center of the slot die 22 in the longitudinal direction.

[0111] According to this configuration, since the spacers 24 can be aligned simultaneously on both sides with respect to the center in the longitudinal direction of the slot die 22, misalignment of the spacers 24 on the left and right sides can be further minimized.

[0112] In particular, a plurality of offset adjustment devices 10 may be provided symmetrically in the longitudinal direction of the slot die 22 with respect to the center of the slot die 22 in the longitudinal direction.

[0113] With this configuration, left and right misalignment of the spacers 24 can be further minimized.

[0114] FIG. 12 is a diagram showing an offset adjustment device 12 according to another embodiment of the present invention. The offset adjustment device 12 according to the present embodiment is similar to the offset adjustment device 10 according to the above embodiment, and therefore, a duplicated description of configurations that are substantially the same as or similar to those of the above embodiment will be omitted, and the following discussion will focus on the differences from the above embodiment.

[0115] 12, a plurality of offset adjustment devices 12 can be provided in the longitudinal direction of the slot die 22. Furthermore, the intervals between the plurality of offset adjustment devices 12 can be configured to be mutually adjustable. That is, the intervals between the plurality of offset adjustment devices 12 can be mutually adjusted in the longitudinal direction (Y-axis direction) of the slot die 22.

[0116] Specifically, the offset adjustment device 12 may include a spacing adjustment module 300. As an example, the spacing adjustment module 300 may be a linear motion guide (LM guide) and configured to extend in the longitudinal direction of the slot die 22.

[0117] Such a spacing adjustment module 300 may be disposed on the opposite side of the die lip L in the slot die 22. As an example, the spacing adjustment module 300 may be disposed adjacent to one side of the first die 22a.

[0118] In addition, the spacing adjustment module 300 may be configured to guide the movement of the offset measurement module 100 and the offset adjustment module 200 in the longitudinal direction of the slot die 22. Specifically, a fixing member F that fixes the offset measurement module 100 and the offset adjustment module 200 may be configured to move on the spacing adjustment module 300.

[0119] According to such a configuration, the offset adjustment device 12 can be easily moved to a position where the alignment of the spacers 24 is misaligned, so that the alignment work of the spacers 24 can be performed more easily.

[0120] As discussed above, according to the embodiment of the present invention, the offset between the die lip L of the slot die 22 and the spacer 24 can be quantitatively measured. In addition, the offset can be measured in real time. In addition, since the offset adjustment module 200 coupled to the spacer 24 can align the spacer 24 according to the measured offset, there is an advantage that the spacer 24 can be aligned more precisely. As a result, the left-right alignment deviation of the spacer 24 can be minimized, and the left-right deviation of the extrusion width of the coating material from the slot die 22 can be minimized.

[0121] In addition, since the offset adjustment module 200 and the spacer 24 can be stably connected, more accurate alignment of the spacer 24 in the discharge direction of the coating agent can be achieved.

[0122] In addition, since the spacer 24 is connected to the offset adjustment module 200, even when the first die 22a and the second die 22b are rejoined after the spacer 24 is aligned, it is possible to minimize misalignment of the spacer 24.

[0123] The present invention has been described above based on limited embodiments and drawings, but the present invention is not limited to these, and it goes without saying that a person having ordinary knowledge in the technical field to which the present invention pertains can make various changes and modifications within the technical spirit of the present invention and the equivalent scope of the claims described below.

[0124] Meanwhile, although terms indicating directions such as up, down, left, right, front, back, etc. are used in the present invention, it will be obvious to those skilled in the art that these terms are used for convenience of explanation and may change depending on the position of the target object, the position of the observer, etc. [Explanation of symbols]

[0125] 1 Coating equipment 10,12 Offset adjustment device 20 Coating agent application device 22 Slot Die 22a 1st die 22b 2nd die 24 Spacer 100 Offset Measurement Module 120 Support bracket 140 Indicator 142 Probe 144 Scale plate 200 Offset Adjustment Module 210 Support part 220 Moving stage section 222 Block 1 222a Recess 224 2nd Block 224a Insertion part 226 Connection 230 Offset adjustment guide 240 Adjustment section 242 Drive unit 244 Handle 250 protruding member 260 Movement restriction section 300 Spacing adjustment module L Die Lip H hole G Guide hole

Claims

1. 1. An offset adjustment device configured for aligning a spacer included in a slot die of a coating agent application device configured to apply a coating agent to a substrate, comprising: an offset measurement module configured to measure an offset between a die lip of the slot die and the spacer; an offset adjustment module coupled to the spacer and configured to align the spacer according to the measured offset.

2. The offset adjustment device includes:

2. The offset adjustment device according to claim 1, configured to be coupled to one side of the slot die located opposite the die lip in a discharge direction of the coating material.

3. The offset measurement module includes: A support bracket provided on the slot die; 2. The offset adjustment device of claim 1, further comprising: an indicator supported by the support bracket and configured to contact the slot die and the spacer to measure the offset.

4. The offset adjustment module includes: A support portion provided on the slot die; 2. The offset adjustment device according to claim 1, further comprising: a moving stage section supported by the support section and configured to align the spacer in response to movement of the coating agent in the discharge direction.

5. The offset adjustment module includes: an offset adjustment guide unit provided on the moving stage unit and coupled to the spacer; 5. The offset adjusting device according to claim 4, further comprising: an adjustment unit configured to adjust the driving of the moving stage unit in a discharging direction of the coating agent.

6. The spacer includes a hole in a portion formed to protrude outward from the slot die, The offset adjustment guide portion is 6. The offset adjustment device of claim 5, configured to couple to a hole in the spacer.

7. The moving stage unit includes: A first block coupled to the support; a second block coupled to an upper portion of the first block and configured to move in a direction in which the coating agent is discharged by driving the adjustment unit; a connection portion coupled to the adjustment portion and configured to connect the second block and the adjustment portion; The offset adjusting device according to claim 5 , wherein the offset adjusting guide portion is provided on an upper portion of the second block.

8. The second block is an insertion portion formed at a lower end thereof so as to protrude inward in a horizontal direction and configured to be inserted into an upper end of the first block; The first block is A recess is formed at an upper end thereof so as to be recessed inward in the horizontal direction and configured to receive the insertion portion, The recessed portion is 8. The offset adjusting device according to claim 7, further comprising a guide for guiding movement of the second block in a direction in which the coating agent is discharged in response to the driving of the adjustment portion.

9. The offset adjustment module includes: a protruding member formed on a side surface of the second block; a movement limiting portion fixed to the first block, the movement limiting portion including a guide hole configured to guide the movement of the protruding member in a direction in which the coating agent is discharged; The protruding member is 8. The offset adjusting device according to claim 7, characterized in that the offset adjusting device is configured to restrict movement of the coating agent in the discharge direction by abutting against one end or the other end of the guide hole.

10. The offset adjustment device according to claim 2 , further comprising a fixing member configured to fix the offset adjustment device to one side of the slot die.

11. The offset adjustment device includes: The offset adjustment device according to claim 1 , wherein a plurality of the offset adjustment devices are provided in the longitudinal direction of the slot die.

12. The offset adjustment devices include The offset adjustment device according to claim 11, characterized in that it is provided on both sides of a center in the longitudinal direction of the slot die along the longitudinal direction of the slot die.

13. The offset adjustment devices include The offset adjustment device according to claim 12, characterized in that it is provided symmetrically in the longitudinal direction of the slot die with respect to a center in the longitudinal direction of the slot die.

14. 12. The offset adjusting device according to claim 11, wherein the intervals between the plurality of offset adjusting devices are configured to be adjustable relative to each other.

15. An offset adjustment device according to any one of claims 1 to 14; a coating agent application device configured to apply a coating agent to a substrate.

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