CN115106247B - Coating device - Google Patents
Coating device Download PDFInfo
- Publication number
- CN115106247B CN115106247B CN202110307059.5A CN202110307059A CN115106247B CN 115106247 B CN115106247 B CN 115106247B CN 202110307059 A CN202110307059 A CN 202110307059A CN 115106247 B CN115106247 B CN 115106247B
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- coating liquid
- space portion
- space
- coating
- flow path
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
- B05C5/0254—Coating heads with slot-shaped outlet
- B05C5/0262—Coating heads with slot-shaped outlet adjustable in width, i.e. having lips movable relative to each other in order to modify the slot width, e.g. to close it
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Coating Apparatus (AREA)
Abstract
The invention provides a coating device capable of adjusting the discharge flow rate of a main body block of the coating device in the length direction even when a gasket for limiting a coating liquid flow path is used. The coating apparatus 1 includes a main body block 10. The main body block 10 has a coating liquid introduction portion 40; a coating liquid discharge portion 41 extending in one direction; a 1 st space 42 extending in one direction and into which the coating liquid introduced from the coating liquid introduction portion 40 flows; a coating liquid flow path 43 that extends in one direction and that causes the coating liquid in the 1 st space 42 to flow to the coating liquid discharge portion 41; a 2 nd space portion 44 provided in the coating liquid flow path 43 so as to widen a flow path width portion of the coating liquid flow path 43 and extending in one direction; and a plurality of volume changing members 34 are provided in one direction in the 2 nd space portion 44, and each of the volume changing members is advanced or retracted with respect to the 2 nd space portion 44, so that the volume of each portion in one direction of the 2 nd space portion 44 can be changed.
Description
Technical Field
The present invention relates to a coating apparatus.
Background
In the production of electronic components such as secondary batteries and capacitors, there is a step of applying a coating liquid to a thin strip-shaped material to be coated. In such a coating step, a coating apparatus called a die coater (die coater) or the like is used.
The coating device has a body block (block). The main body block has a coating liquid introduction portion for introducing a coating liquid and a slit-shaped coating liquid discharge portion for discharging the coating liquid, the slit-shaped coating liquid discharge portion being long in one direction. The main body block includes a manifold and a coating liquid flow path inside the main body block, the coating liquid introduced from the coating liquid introduction portion flows into the manifold, the manifold is long in a longitudinal direction, and the coating liquid flow path is led from the manifold to the coating liquid discharge portion. In the manifold, the flow rate and the pressure of the coating liquid are uniform in the longitudinal direction, and the coating liquid passes through the coating liquid flow path and is discharged from the coating liquid discharge portion.
With respect to the coating apparatus described above, in patent document 1, it is proposed to adjust the gap amount of the coating liquid flow path for each of the partition bars by providing a plurality of partition bars that partition across one direction of the coating liquid flow path and advancing or retracting the partition bars in order to adjust the distribution of the discharge amount to be uniform in the entire length direction (see patent document 1).
In the coating apparatus, a plate-shaped gasket (shim) (jig) sandwiched between a die (die) main body is used to adjust the gap between the coating liquid flow path and the coating liquid discharge portion.
The gasket is also used to define the coating liquid flow path and the flow path of the coating liquid in the coating liquid discharge portion in order to correspond to, for example, a stripe-like coating pattern in which positions to be coated and positions not to be coated alternate in the width direction of the material to be coated. In this case, the spacer is configured in, for example, a comb shape, and a plurality of comb tooth portions correspond to regions where the coating liquid is not discharged (regions where the coating liquid flows), and spaces between these comb tooth portions correspond to regions where the coating liquid is discharged (regions where the coating liquid flows).
Patent literature
Patent document 1: japanese patent laid-open No. 2007-44643
Disclosure of Invention
However, in the case of realizing a stripe-style coating pattern using the above-described gasket defining the flow path of the coating liquid, the film thicknesses of the plurality of coating portions arranged in the width direction of the material to be coated need to be kept uniform within a specified range. Therefore, in order to equalize the film thicknesses of the plurality of coating portions, it is necessary to adjust the discharge flow rate in the longitudinal direction in the coating liquid discharge portion.
Therefore, the spacer of the coating apparatus is considered to be used, but in this case, there is a case where the number and positions of the comb teeth portion of the spacer and the spacer are not matched and interfere with each other, and the spacer cannot advance or retract, and thus cannot function. In particular, when a plurality of types of spacers are used in the coating apparatus according to the coating pattern, there is a case where the number and positions of the comb tooth portions of the spacers and the partition bars are not necessarily matched, and at this time, the discharge flow rate in the longitudinal direction in the coating liquid discharge portion cannot be adjusted.
The present invention has been made in view of the above-described circumstances, and an object thereof is to provide an applicator device capable of adjusting a discharge flow rate in a longitudinal direction of a body block of the applicator device even when a gasket such as a flow path for restricting an application liquid is used.
The coating device according to one embodiment of the present invention includes a main body block having a coating liquid introduction portion, a coating liquid discharge portion, a 1 st space portion, a coating liquid flow path, a 2 nd space portion, and a volume changing member, wherein the coating liquid discharge portion is provided so as to extend in one direction, the coating liquid introduced from the coating liquid introduction portion flows into the 1 st space portion, and the 1 st space portion is provided so as to extend in one direction, the coating liquid flow path is provided so as to flow the coating liquid in the 1 st space portion to the coating liquid discharge portion, and the coating liquid flow path is provided so as to extend in one direction, the 2 nd space portion is provided so as to partially widen a flow path width of the coating liquid flow path, and the 2 nd space portion is provided so as to extend in one direction, and the volume changing member is provided in plurality in one direction in the 2 nd space portion, and each volume changing member is provided so as to advance or retreat with respect to the 2 nd space portion, whereby a volume of each portion in one direction of the 2 nd space portion can be changed.
According to the above embodiment, since the 2 nd space portion is provided in the coating liquid flow path and the volume changing member is provided in the 2 nd space portion, even when a gasket for restricting the flow path of the coating liquid is used, the gasket and the volume changing member do not interfere with each other, and the discharge flow rate in the longitudinal direction of the main body block can be adjusted.
In the above embodiment, the 2 nd space portion may have a length in the flow direction of the coating liquid larger than a length in the flow direction of the coating liquid of the volume changing member.
In the above embodiment, the volume changing member may be disposed at the downstream end of the 2 nd space portion.
In the above embodiment, the body block may have a hole that opens into the inner surface of the 2 nd space portion, and the volume changing member may be disposed in the hole and may freely advance or retract from the hole to the 2 nd space portion.
In the above embodiment, the main body block may have two block portions arranged to face each other, and the 1 st space portion, the coating liquid flow path, the 2 nd space portion, and the coating liquid discharge portion may be formed between the two block portions.
In the above embodiment, the 1 st space portion and the 2 nd space portion may be formed by recessing the facing surfaces of the different block portions.
In the above embodiment, the 1 st space portion and the 2 nd space portion may be formed by recessing the facing surfaces of the same block portion.
In the above embodiment, the downstream portion of the 1 st space may overlap with the upstream portion of the 2 nd space.
In the above embodiment, the 1 st space portion and the 2 nd space portion may be separated from each other.
In the above embodiment, the inner surface of the 2 nd space portion may be polished.
Drawings
Fig. 1 is a perspective view showing a state of use of the coating device.
Fig. 2 is an exploded view of the coating device.
Fig. 3 is a cross-sectional view of the coating device, in which the coating device is cut by a vertical section in the short side direction.
Fig. 4 is a view showing the inner surface of the 1 st block of the coating device.
Fig. 5 is an enlarged vertical sectional view of the vicinity of the 2 nd space portion.
FIG. 6 is a C-C cross-sectional view of the body block.
Fig. 7 is a view showing the inner surface of the 1 st block portion on which the gasket is disposed.
Fig. 8 is an explanatory diagram of a material to be coated.
Fig. 9 is a C-C cross-sectional view of the main body block showing an example of the operation of the volume changing member.
Fig. 10 is a vertical cross-sectional view of the body block in the case where the 1 st space portion overlaps the 2 nd space portion.
Fig. 11 is a vertical cross-sectional view of the main body block in the case where the 1 st space portion and the 2 nd space portion are provided in different block portions.
Fig. 12 is a vertical cross-sectional view of the body block in the case where the 1 st space portion overlaps the 2 nd space portion.
Fig. 13 is an enlarged vertical cross-sectional view of the vicinity of the 2 nd space portion in the case where the 2 nd space portion is rectangular.
Fig. 14 is an enlarged vertical cross-sectional view of the vicinity of the 2 nd space portion in the case where the 2 nd space portion is formed in a semicircular shape.
Fig. 15 is a vertical sectional view of the vicinity of the 2 nd space portion in the case of enlarging and tilting the front end of the head portion.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
Fig. 1 is a perspective view showing a state of use of the coating device 1 according to the present embodiment, and fig. 2 is an exploded view of the coating device 1. In the present embodiment, the upper and lower directions are based on the posture of the coating apparatus 1 shown in fig. 1.
As shown in fig. 1, the coating apparatus 1 has a substantially rectangular parallelepiped main body block 10 that is long in one direction (longitudinal direction Y). The lower surface of the main body block 10 has a top 20 protruding downward so that the center in the short-side direction X is formed lowest and longer in the length direction Y. As shown in fig. 1 and 2, the main body block 10 includes two block portions (a 1 st block portion 30 and a 2 nd block portion 31) divided into left and right portions at the center in the short side direction X, a side plate 32 provided on both side surfaces in the longitudinal direction Y of the main body block 10, a spacer 33 serving as a jig between the 1 st block portion 30 and the 2 nd block portion 31, and a plurality of volume changing members 34. As shown in fig. 1, the 1 st block 30 and the 2 nd block 31 are fixed to each other by a fastening member (not shown) with the gasket 33 interposed therebetween.
Fig. 3 and 4 show the internal structure of the coating device 1. Fig. 3 is a cross-sectional view of the coating device 1 in which the coating device 1 is cut by a vertical cross-section in the short-side direction X, and fig. 4 is a view showing the inner surface of the 1 st block 30 of the coating device 1. As shown in fig. 3 and 4, the main body block 10 includes a coating liquid introduction portion 40, a coating liquid discharge portion 41, a 1 st space portion 42, a coating liquid flow path 43, and a 2 nd space portion 44.
The coating liquid introduction portion 40 is led from, for example, the outer surface 30a of the 1 st block portion 30 of the main block 10 to a 1 st space portion 42 described later. The coating liquid introduction portion 40 is provided at one position in the center in the longitudinal direction Y, for example. The coating liquid introduction portion 40 is connected to a coating liquid supply source, not shown, provided outside the main body block 10, and introduces the coating liquid supplied from the coating liquid supply source into the main body block 10 so as to flow into the 1 st space portion 42.
The coating liquid discharge portion 41 is formed at the top 20 of the lower end of the main body block 10. The coating liquid discharge portion 41 extends across both ends of the longitudinal direction Y of the main body block 10. The coating liquid discharge portion 41 is formed in an elongated slit shape and has a fixed flow path width D1 (shown in fig. 3). For example, the channel width D1 is set to about 0.05mm to 2 mm.
The 1 st space 42 is provided near the center of the main body block 10 in the up-down direction. As shown in fig. 3, the 1 st space 42 is formed by, for example, recessing the facing surface (inner surface) 30b of the 1 st block 30 into a curved shape. As shown in fig. 4, the 1 st space 42 extends across both ends of the body block 10 in the longitudinal direction Y. The coating liquid introduction portion 40 is opened at a central portion in the longitudinal direction Y of the 1 st space portion 42.
As shown in fig. 3, the coating liquid flow path 43 leads from the 1 st space portion 42 to the coating liquid discharge portion 41. The coating liquid flow path 43 has a flow path width D1 fixed in the short-side direction X in a portion other than the 2 nd space portion 44 described later. As shown in fig. 4, the coating liquid flow path 43 is provided so as to extend across both ends of the longitudinal direction Y of the main body block 10, as in the 1 st space 42.
As shown in fig. 3, the 2 nd space portion 44 is provided in the coating liquid flow path 43, and is formed so as to partially widen the flow path width of the coating liquid flow path 43. The 2 nd space portion 44 is formed by recessing the facing surface 30b of the 1 st block portion 30. The 2 nd space portion 44 includes, for example, an upstream portion 44a in which the facing surface 30b of the 1 st block portion 30 is recessed in a curved shape, and a downstream portion 44b in which the recess is rectangular.
As shown in fig. 5, the 2 nd space portion 44 has a (maximum) length L1 in the flow direction Z of the coating liquid that is greater than a (maximum) length L2 in the flow direction Z of the coating liquid of the volume changing member 34 described later. The 2 nd space portion 44 has a (maximum) depth D2 of 2 times or more, and preferably 3 times or more and 20 times or less, of the flow path width D1 of the fixed coating liquid flow path 43. The entire volume of the 2 nd space portion 44 is smaller than that of the 1 st space portion 42. As shown in fig. 4, the 2 nd space portion 44 extends across both ends of the body block 10 in the longitudinal direction, and is provided at the same position in the longitudinal direction Y with the same length as the 1 st space portion 42 and the coating liquid flow path 43. For example, polishing (lapping) or polishing (buffering) is performed to the inner surface 44c of the 2 nd space 44 so that the surface roughness expressed as Rz becomes 10 μm or less.
Fig. 6 is a view of a horizontal section (section C-C of fig. 3) of the main body block 10. As shown in fig. 3 and 6, a hole 60 is formed in the body block 10, which opens from the outer surface 30a of the 1 st block portion 30 to the 2 nd space portion 44. The hole 60 is formed to open toward the inner surface 44c of the 2 nd space portion 44, and has a large diameter portion 60a that accommodates a head portion 70 of the volume changing member 34 described later, and a small diameter portion 60b that accommodates a support portion 71 of the volume changing member 34.
As shown in fig. 4 and 6, the large diameter portion 60a extends so as to extend across both ends of the 2 nd space portion 44 in the longitudinal direction Y. As shown in fig. 3 and 6, the small diameter portion 60b extends in the short side direction X from the large diameter portion 60a to the outer surface 30a of the 1 st block 30. As shown in fig. 4 and 6, a plurality of small diameter portions 60b, for example, 5 small diameter portions 60b are provided at equal intervals in the longitudinal direction Y of the 2 nd space portion 44.
As shown in fig. 3 and 6, the volume changing member 34 includes, for example, a head 70 and a support portion 71 for supporting the head 70. The head 70 is accommodated in the large diameter portion 60a of the hole 60.
The head 70 has, for example, a rectangular parallelepiped shape long in the longitudinal direction Y. The head 70 has a flat front face 70a. The support portion 71 extends from the head portion 70 through the small diameter portion 60b to the outside of the outer surface 30a of the 1 st block 30. The volume changing member 34 is connected to a driving unit such as a motor, not shown, for example, and can change the volume of the 2 nd space 44 by advancing or retreating the head 70 in the short-side direction X with respect to the 2 nd space 44.
The volume changing member 34 is provided in plural, for example, 5, along the longitudinal direction Y of the 2 nd space portion 44. As shown in fig. 4, in an inner surface view of the facing surface 30b of the 1 st block 30 as viewed from the short side direction X, the heads 70 of the 5 volume changing members 34 are arranged linearly with almost no gaps in the longitudinal direction Y. As shown in fig. 6, each of the 5 volume changing members 34 can be moved forward or backward with respect to the 2 nd space portion 44, and the volume of each portion divided by 5 in the longitudinal direction Y of the 2 nd space portion 44 can be changed.
As shown in fig. 3, between the 1 st block portion 30 and the 2 nd block portion 31 of the main body block 10, a 1 st space portion 42, a coating liquid flow path 43, a 2 nd space portion 44, and a coating liquid discharge portion 41 are formed in this order from the top. A flat surface 30d for sandwiching a base 90 described later of the spacer 33 is formed on the upper portion of the opposed surface (inner surface) of the 1 st block 30. The inner surface 31a of the 2 nd block 31 is formed flat throughout.
The spacer 33 is located between the 1 st block 30 and the 2 nd block 31. The gasket 33 defines a flow path of the coating liquid flow path 43 and a discharge portion of the coating liquid discharge portion 41. For example, as shown in fig. 2, the spacer 33 has a comb-shaped plate shape. The gasket 33 has a base 90 extending in one direction, and a plurality of flow path restricting plates 91 extending from the base 90 to the base 90 in the right-angle direction, for example, 3. Two flow path limiting plates 91 are provided at both end portions of the base 90, and the remaining flow path limiting plates 91 are provided at the center of the base 90. The 3 flow path restricting plates 91 have the same width, thickness, and length, and are arranged at equal intervals along the extending direction of the base 90.
As shown in fig. 7, the base portion 90 of the gasket 33 is disposed on the flat surface 30d located above the 1 st space portion 42 of the 1 st block portion 30, and the flow path restricting plate 91 is located between the 1 st block portion 30 and the 2 nd block portion 31 so as to extend from the 1 st space portion 42 to the coating liquid discharge portion 41 in the flow direction Z of the coating liquid. As a result, in the coating liquid flow path 43 and the coating liquid discharge portion 41, the flow path of the coating liquid is formed only between the adjacent flow path limiting plates 91, and the portion from which the coating liquid is discharged and the portion from which the coating liquid is not discharged are alternately formed in the longitudinal direction Y, so that the coating liquid can be applied in a stripe shape on the material to be coated.
As shown in fig. 3, the gasket 33 is sandwiched between the 1 st block 30 and the 2 nd block 31 in an airtight manner, and thus the thickness of the gasket 33 directly constitutes the flow path width D1 of the coating liquid flow path 43 and the coating liquid discharge portion 41. Therefore, in the present embodiment, the gasket 33 has an effect of defining the flow path width D1 of the coating liquid discharge portion 41.
Next, a description will be given of a use example of the coating apparatus 1 configured as described above. The 1 st block 30 and the 2 nd block 31 are fastened to each other with the spacer 33 interposed between the 1 st block 30 and the 2 nd block 31, and then the side plates 32 are attached to both side surfaces in the longitudinal direction Y. Thus, the installation of the main body block 10 shown in fig. 1 is completed.
The coating liquid discharge portion 41 of the main body block 10 is disposed opposite to the roller 120. By the rotation of the roller 120, the band-shaped coating material a is fed between the coating liquid discharge portion 41 and the roller 120. The coating liquid is introduced from the coating liquid introduction portion 40 of the main body block 10, is spread in the longitudinal direction Y in the 1 st space portion 42, flows through the coating liquid flow path 43 after the flow rate and pressure of the coating liquid are uniform, and is discharged from the coating liquid discharge portion 41. At this time, the flow path restricting plate 91 of the gasket 33 restricts the flow paths of the coating liquid 43 and the coating liquid discharge portion 41, so that the coating liquid flows only to the portion (partition flow path) having no flow path restricting portion 91 and is discharged. Thus, for example, as shown in fig. 8, a stripe-like coating pattern in which the coating portions 130 and the non-coating portions 131 alternately exist in the width direction is formed on the coating target material a.
At the time of coating, the volume changing members 34 are individually operated so as to make the film thicknesses of the plurality of coating portions 130 of the material a to be coated uniform. For example, as shown in fig. 9, the volume changing member 34 near the center in the longitudinal direction Y of the coating liquid flow path 43 is relatively retracted to increase the volume of the 2 nd space portion 44 of the portion, and the volume changing member 34 near the both ends in the longitudinal direction Y of the coating liquid flow path 43 is relatively advanced to reduce the volume of the 2 nd space portion 44 of the portion. Thus, the discharge flow rates of the respective divided flow paths of the coating liquid discharge portion 41 divided by the gasket 33 are made uniform, and therefore, the coating portion 130 having a uniform film thickness can be formed over the width direction of the coating material a.
According to the present embodiment, the body block 10 of the coating apparatus 1 includes the 2 nd space portion 44 and the volume changing member 34, the 2 nd space portion 44 is provided in the coating liquid flow path 43 so that the flow path width thereof is partially widened, and the volume changing member 34 is provided in plural in one direction within the 2 nd space portion 44, and each of them advances or retreats with respect to the 2 nd space portion 44, so that the volume of each portion in one direction of the 2 nd space portion 44 can be changed. Thus, even when the gasket 33 such as restricting the flow path of the coating liquid is used, the flow rate of the coating liquid in the longitudinal direction Y in the coating liquid flow path 43 can be adjusted by using the 2 nd space portion 44, and therefore the discharge flow rate in the longitudinal direction Y of the main body block 10 can be adjusted.
The 2 nd space portion 44 has a length L1 in the flow direction Z of the coating liquid that is greater than a length L2 in the flow direction Z of the coating liquid of the volume changing member 34. This suppresses the convection of the coating liquid in the vicinity of the volume changing member 34, and the coating liquid can smoothly flow in the 2 nd space 44, so that the discharge flow rate of the coating liquid can be appropriately adjusted.
Since the volume changing member 34 is disposed in the downstream portion 44b of the 2 nd space portion 44, the flow of the coating liquid into the 2 nd space portion 44 can be smoothly performed. Further, since the volume changing member 34 is located close to the coating liquid discharge portion 41, the discharge flow rate in the longitudinal direction Y can be effectively adjusted by the volume adjustment of the 2 nd space portion 44.
The body block 10 has a hole 60 that opens to the inner surface of the 2 nd space 44, and the volume changing member 34 is disposed in the hole 60 and is formed so as to be able to freely advance or retract from the hole 60 to the 2 nd space 44. This allows the volume changing member 34 to advance or retract with respect to the 2 nd space 44.
Since the inner surface 44c of the 2 nd space portion 44 is polished, the flow of the coating liquid in the 2 nd space portion 44 becomes smooth. In addition, the coating liquid adhering to the inner surface 44c of the 2 nd space portion 44 can be easily cleaned.
As shown in fig. 10, in the above embodiment, the downstream portion of the 1 st space 42 and the upstream portion of the 2 nd space 44 may overlap. In this case, the pressure loss when the coating liquid flows from the 1 st space 42 to the 2 nd space 44 is reduced, and the coating liquid can smoothly flow into the 2 nd space 44.
As shown in fig. 11, in the above embodiment, the 1 st space 42 and the 2 nd space 44 may be formed by recessing the facing surfaces of different block portions. For example, the 1 st space portion 42 may be formed on the 1 st block portion 30 side, and the 2 nd space portion 44 may be formed on the 2 nd block portion 31 side. In the coating apparatus 1, when the body block 10 is horizontally provided in the longitudinal direction, a stage for placing the body block 10 is provided. In this case, if the volume changing member 34 is considered to be operated, the 1 st space 42 is preferably set to the block portion on the side having the volume changing member 34.
In the above example, as shown in fig. 12, the downstream portion of the 1 st space 42 may overlap with the upstream portion of the 2 nd space 44. In this case, the coating liquid smoothly flows from the 1 st space 42 toward the 2 nd space 44.
The preferred embodiments of the present invention have been described above with reference to the drawings, but the present invention is not limited to the above examples. It is obvious that a person skilled in the art can conceive various modifications and changes within the scope of the idea described in the claims, and it is needless to say that these examples also fall within the technical scope of the present invention.
For example, the structure of the main body block 10 in the above embodiment is not limited to the above embodiment. For example, the shape of the coating liquid introduction portion 40, the coating liquid discharge portion 41, the 1 st space portion 42, the coating liquid flow path 43, and the 2 nd space portion 44 is not limited to the above embodiment. The shape of the 2 nd space portion 44 may be rectangular as shown in fig. 13 in a vertical cross section, or semicircular as shown in fig. 14.
The number and shape of the volume changing members 34 are not limited to the above embodiment. For example, as shown in fig. 15, the front end surface 70a of the head 70 of the volume changing member 34 may be inclined so that the downstream side is closer to the coating liquid flow path 43. In this case, the flow of the coating liquid toward the coating liquid discharge portion 41 becomes smooth.
The spacer 33 is not limited to the above embodiment. For example, the number of the flow path restricting plates 91 of the gasket 33 may be not 3, may be 2, or may be 4 or more. The coating device of the present invention is also applicable to a structure in which no spacer is used.
In the above embodiment, the description has been made of the example in which the coating liquid discharge portion 41 of the main body block 10 is directed downward to the coating apparatus 1, but in the coating apparatus 1, the coating liquid discharge portion 41 of the main body block 10 may be directed in any direction such as sideways or upward.
[ Industrial applicability ]
The present invention is useful in providing a coating apparatus capable of adjusting the discharge flow rate in the longitudinal direction of the main body block of the coating apparatus even when a gasket that restricts the flow path of the coating liquid is used.
Symbol description
1. Coating device
10. Main body block
20. Top part
30. 1 st block part
31. 2 nd block part
33. Gasket
34. Volume changing member
40. Coating liquid introducing part
41. Coating liquid discharge part
42. 1 st space part
43. Coating liquid flow path
44. And a 2 nd space part.
Claims (12)
1. A coating apparatus, wherein,
the coating device is provided with a main body block,
the main body block has:
a coating liquid introduction part;
a coating liquid discharge portion extending in one direction;
a 1 st space portion into which the coating liquid introduced from the coating liquid introduction portion flows, the 1 st space portion being provided so as to extend in one direction;
a coating liquid flow path that causes the coating liquid in the 1 st space portion to flow toward the coating liquid discharge portion, the coating liquid flow path extending in one direction;
a 2 nd space portion provided to the coating liquid flow path so that a flow path width of the coating liquid flow path is partially widened, and the 2 nd space portion is provided to extend in one direction; and
and a plurality of volume changing members provided in the 2 nd space portion in one direction, each of the volume changing members being individually movable forward and backward with respect to the 2 nd space portion, so that the volume of each portion in the 2 nd space portion in one direction can be changed.
2. The coating apparatus according to claim 1, wherein,
the 2 nd space portion has a length in the flow direction of the coating liquid that is larger than a length in the flow direction of the coating liquid of the volume changing member.
3. The coating apparatus according to claim 2, wherein,
the volume changing member is disposed at an end portion of the 2 nd space portion on the downstream side.
4. The coating apparatus according to claim 1, wherein,
the body block has a hole leading to the inner surface of the 2 nd space portion,
the volume changing member is disposed in the hole and freely moves forward or backward from the hole to the 2 nd space.
5. The coating apparatus according to claim 2, wherein,
the body block has a hole leading to the inner surface of the 2 nd space portion,
the volume changing member is disposed in the hole and freely moves forward or backward from the hole to the 2 nd space.
6. The coating apparatus according to claim 3, wherein,
the body block has a hole leading to the inner surface of the 2 nd space portion,
the volume changing member is disposed in the hole and freely moves forward or backward from the hole to the 2 nd space.
7. The coating apparatus according to any one of claims 1 to 6, wherein,
the main body block has two block portions arranged opposite to each other, and the 1 st space portion, the coating liquid flow path, the 2 nd space portion, and the coating liquid discharge portion are formed between the two block portions.
8. The coating apparatus according to claim 7, wherein,
the 1 st space portion and the 2 nd space portion are formed by recessing facing surfaces of different block portions.
9. The coating apparatus according to claim 7, wherein,
the 1 st space portion and the 2 nd space portion are formed by recessing the facing surfaces of the same block portion.
10. The coating apparatus according to any one of claims 1 to 6, wherein,
the downstream portion of the 1 st space overlaps the upstream portion of the 2 nd space.
11. The coating apparatus according to any one of claims 1 to 6, wherein,
the 1 st space portion and the 2 nd space portion are separated from each other.
12. The coating apparatus according to any one of claims 1 to 6, wherein,
and polishing the inner surface of the 2 nd space part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110307059.5A CN115106247B (en) | 2021-03-23 | 2021-03-23 | Coating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110307059.5A CN115106247B (en) | 2021-03-23 | 2021-03-23 | Coating device |
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| Publication Number | Publication Date |
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| CN115106247A CN115106247A (en) | 2022-09-27 |
| CN115106247B true CN115106247B (en) | 2024-01-30 |
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| CN202110307059.5A Active CN115106247B (en) | 2021-03-23 | 2021-03-23 | Coating device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1262355C (en) * | 2002-11-12 | 2006-07-05 | 松下电器产业株式会社 | Squeezing nozzle and coater using same |
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| CN104226542A (en) * | 2013-06-10 | 2014-12-24 | 东丽工程株式会社 | Spreader and spreading device |
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