WO2017126408A1 - 端面塗布装置 - Google Patents
端面塗布装置 Download PDFInfo
- Publication number
- WO2017126408A1 WO2017126408A1 PCT/JP2017/000816 JP2017000816W WO2017126408A1 WO 2017126408 A1 WO2017126408 A1 WO 2017126408A1 JP 2017000816 W JP2017000816 W JP 2017000816W WO 2017126408 A1 WO2017126408 A1 WO 2017126408A1
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- WO
- WIPO (PCT)
- Prior art keywords
- fluid
- glass substrate
- end surface
- coating apparatus
- nozzle
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
- C03C17/32—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with synthetic or natural resins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
-
- 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
-
- 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
- B05C5/0204—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 for applying liquid or other fluent material to the edges of essentially flat articles
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/001—General methods for coating; Devices therefor
-
- 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
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
- B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/70—Properties of coatings
- C03C2217/78—Coatings specially designed to be durable, e.g. scratch-resistant
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2218/00—Methods for coating glass
- C03C2218/10—Deposition methods
- C03C2218/11—Deposition methods from solutions or suspensions
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2218/00—Methods for coating glass
- C03C2218/10—Deposition methods
- C03C2218/11—Deposition methods from solutions or suspensions
- C03C2218/112—Deposition methods from solutions or suspensions by spraying
Definitions
- the present invention relates to an end face coating apparatus for applying a fluid to an end face of a glass substrate formed in a plate shape.
- an end surface of the glass substrate is used to prevent the glass substrate from cracking or chipping.
- a protective layer made of a resin material is formed (see Patent Document 1 below).
- the protective layer is applied to the end surface of the glass substrate using a dispenser with an uncured (fluid-like) resin material that cures when irradiated with ultraviolet rays. Formed with.
- a dispenser that applies a fluid to the end surface of a thin plate-like object to be coated, for example, causes a rod body having a flange portion to protrude from the tip of a cylindrical body as shown in Patent Document 2 below.
- a recess that sandwiches the application target is formed in front of the cylindrical body, and the fluid is applied to the end surface of the application target by flowing the fluid in the recess.
- the present invention has been made to cope with the above problems, and an object of the present invention is to provide an end surface coating apparatus that can accurately apply a fluid only to an end surface of a glass substrate that is an object to be coated.
- a feature of the present invention is an end surface coating apparatus that applies a fluid to an end surface of a glass substrate formed in a plate shape, a workpiece holder that detachably holds the glass substrate, and a workpiece
- a fluid discharge tool for discharging the fluid having a bottomed cylindrical nozzle extending in a direction orthogonal to the plate surface of the glass substrate at a position facing the end surface of the glass substrate held by the holder;
- Fluid supply means for supplying fluid to the body discharge tool, discharge tool displacing means for displacing the fluid discharge tool relative to the workpiece holder, and controlling the operation of the fluid supply means and the discharge tool displacement means
- the fluid discharge tool is formed with a discharge opening for discharging the fluid by opening at a position opposite to the end surface of the glass substrate on the side surface of the nozzle with a size equal to or less than the plate thickness of the end surface.
- the control means is the displacement of the discharge tool It is to eject fluid from the control to the discharge port of the actu
- the end surface coating apparatus arranges the nozzle that opens the discharge port for discharging the fluid in a state of being opposed to the end surface of the glass substrate that is the application target. Since the outlet is formed to have a size equal to or less than the thickness of the end surface of the glass substrate, the fluid can be accurately applied only to the end surface of the glass substrate. Moreover, since this nozzle is extended in the direction orthogonal to the plate surface of a glass substrate, this end surface coating apparatus can apply
- the end face coating apparatus further includes a rotating means for rotating the nozzle around the axis, and the control means controls the operation of the rotating means.
- the end surface coating apparatus includes a rotation means for rotating the nozzle around the axis, and thus rotates the nozzle in accordance with the direction in which the end surface of the glass substrate is formed.
- the direction of the discharge port can be directed to the end face, and the fluid application operation can be performed efficiently.
- the end face coating apparatus can direct the direction of the discharge port to a direction other than the direction orthogonal to the traveling direction of the nozzle at the time of applying the fluid, for example, the front side or the rear side.
- the application mode such as the amount, the application thickness and the application shape can be changed.
- the end face coating apparatus can form a flat surface with a constant thickness of the fluid applied by directing the discharge port toward the front side of the nozzle in the traveling direction. Further, the end face coating apparatus can form the applied fluid at a thickness greater than the clearance with respect to the end face by directing the discharge port to the rear side in the direction of travel of the nozzle, and the applied fluid. Can be formed in a convex arc shape.
- another feature of the present invention is that, in the end face coating apparatus, at least the outer peripheral surface where the discharge port is opened is formed in a curved surface.
- the end surface coating apparatus is configured in a case where the nozzle contacts the end surface of the glass substrate because at least the outer peripheral surface of the nozzle opening is formed in a curved surface. Even if it exists, since the discharge port is prevented from being completely blocked and the discharge of the fluid is ensured, the fluid can be applied with high accuracy.
- the work holder in the end face coating apparatus, can hold a plurality of glass substrates in a stacked state, and the fluid discharge tool corresponds to a plurality of glass substrates. That is, a plurality of positions are formed along the axial direction of the nozzle.
- the end surface coating apparatus can hold the work holder in a state where a plurality of glass substrates are stacked, and has a plurality of discharge ports in the fluid discharge tool. Since it forms corresponding to a glass substrate, a fluid can be efficiently applied to a plurality of glass substrates.
- FIG. 1 A schematic diagram which shows roughly the structure of the principal part of the end surface coating apparatus which concerns on one Embodiment of this invention. It is a top view which shows the outline of the external appearance structure of the glass substrate which is a process target by which a fluid is apply
- FIG. 1 is a schematic view schematically showing a configuration of a main part of an end face coating apparatus 100 according to the present invention.
- This end face coating apparatus 100 is for applying a resin fluid 95 as a raw material to form a protective layer 94 on an end face 91 of a glass substrate 90 constituting a liquid crystal display including a touch panel in a mobile terminal device such as a smartphone. It is a mechanical device.
- the glass substrate 90 is a component that forms a liquid crystal display in a mobile terminal device (not shown) such as a smartphone, and is configured by forming a glass material into a plate shape.
- the size of the glass substrate 90 in plan view is formed to be slightly smaller than the size of the portable terminal device, and the thickness of the glass substrate 90 is approximately 0.1 mm to 1.0 mm.
- the glass substrate 90 is formed in a substantially rectangular shape in plan view having a long side of 130 mm, a short side of 70 mm, and a thickness of 0.5 mm.
- a concave portion 92 is formed on an end surface 91 constituting an outer peripheral end, and a hole portion 93 is formed above the concave portion 92 in the figure.
- the recess 92 and the hole 93 are so-called escape portions that avoid physical contact with other components when the glass substrate 90 is assembled to the portable terminal device.
- the recess 92 is formed to be recessed from the short side below the four of the four sides constituting the end surface 91 of the glass substrate 90.
- the recess 92 is linearly formed inward by 2 mm from the end face 91 and both ends are connected to the end face 91 via a concave arc.
- the hole 93 is constituted by a long hole-like through hole extending in the width direction of the glass substrate 90 on the upper side of the recess 92 in the figure.
- the hole 93 is formed in a long hole shape in which the width in the width direction of the glass substrate 90 is 35 mm, the width of the hole in the longitudinal direction of the glass substrate 90 is 2 mm, and both ends are arc-shaped. Is formed.
- the protective layer 94 is a solid or semi-solid resin layer formed on the end surface 91 in order to prevent the glass substrate 90 from cracking or chipping.
- the protective layer 94 is formed with a thickness in the range of 50 ⁇ m to 1 mm.
- the fluid 95 is an uncured resin material having fluidity as a raw material for the solid or semi-solid protective layer 94.
- various resin materials such as acrylic, epoxy, enethiol, and polyene-polythiol can be used.
- the protective layer 94 is indicated by hatching with a point group and the thickness is exaggerated.
- the end surface coating apparatus 100 includes a workpiece holder 101.
- the workpiece holder 101 is a device that detachably holds a single glass substrate 90 to be processed, and includes a planar holding surface 102 that holds the plate surface of the glass substrate 90.
- the holding surface 102 is a portion for adsorbing the glass substrate 90 by negative pressure, and a plurality of holes for sucking air and generating negative pressure are formed. These holes are connected to suction pumps 103 that are operated and controlled by a control device 130 described later to suck air.
- the holding surface 102 is formed in a shape (in the present embodiment, a rectangular shape) smaller than the size of the glass substrate 90 in plan view, and the end surface 91 of the glass substrate 90 is an outer peripheral portion (four sides) of the holding surface 102. ).
- the work holder 101 is fixedly provided on a support base (not shown) in the end face coating apparatus 100, and its operation is controlled by the control device 130.
- a fluid discharge tool 110 is provided above the work holder 101.
- the fluid discharge tool 110 is an instrument for discharging the fluid 95 onto the end surface 91 of the glass substrate 90 held by the work holder 101, and the metal material is formed into a bottomed cylindrical shape. Formed and configured. More specifically, the fluid discharge tool 110 has a nozzle 112 formed mainly on the lower side of the cylindrical body 111 in the figure, and a flow path inside the body 111 and the nozzle 112. 114 is formed.
- the body portion 111 is a portion for supporting the nozzle 112 and attaching the fluid discharger 110 to the holder 120, and a step in which an attachment portion 111a attached to the holder 120 is formed with a smaller diameter than the portion on the nozzle 112 side. It is formed in a cylindrical shape with a mark.
- the nozzle 112 is a portion disposed opposite to the end surface 91 of the glass substrate 90 held by the work holder 101 and is formed in a bottomed cylindrical shape having a smaller diameter than the body portion 111. In this case, the nozzle 112 is formed to have an outer diameter that is thinner than the inner diameter of the hole 93 of the glass substrate 90. In this embodiment, the nozzle 112 has an outer diameter of 1.0 mm.
- a discharge port 113 is formed on the outer peripheral surface of the nozzle 112.
- the discharge port 113 is an opening for discharging the fluid 95 toward the end surface 91 of the glass substrate 90 held by the workpiece holder 101, and is configured by a circular through hole communicating with the flow path 114. .
- the discharge port 113 is formed with an inner diameter having a thickness equal to or less than the thickness of the end surface 91 of the glass substrate 90.
- the discharge port 113 is formed with an inner diameter of 0.4 mm.
- one discharge port 113 is formed on the outer peripheral surface on the tip end side of the nozzle 112.
- the discharge port 113 is formed along a horizontal direction orthogonal to the axial direction of the nozzle 112.
- the flow path 114 is a part for guiding the fluid 95 supplied through the holder 120 to the discharge port 113, and is formed in the first flow path formed in the body part 111 and the nozzle 112.
- the second flow path is smaller than the flow path.
- the fluid discharge tool 110 is supported by the holder 120.
- the holder 120 is a part that holds the fluid discharge tool 110 and the syringe pump 121 and communicates the fluid discharge tool 110 and the syringe pump 121 with each other, and is configured by forming a metal material in a block shape. That is, a flow path (not shown) for guiding the fluid 95 in the syringe pump 121 to the fluid discharge tool 110 is formed in the holder 120.
- This holder 120 is supported by a Z-axis drive mechanism 122.
- the syringe pump 121 is a device that stores the fluid 95 discharged from the fluid discharge tool 110 and discharges the stored fluid 95 toward the flow path in the holder 120 by operation control by the control device 130. That is, the syringe pump 121 corresponds to the fluid supply means according to the present invention. The syringe pump 121 is held in a detachable state on the holder 120.
- the Z-axis drive mechanism 122 is a device for reciprocally displacing the fluid discharger 110 in the same direction by reciprocating the holder 120 in the Z-axis direction that is the vertical direction. It is constituted by a cylinder. This Z-axis drive mechanism 122 is supported by a ⁇ -axis drive mechanism 123.
- the ⁇ -axis drive mechanism 123 is a device for reciprocatingly displacing the fluid discharge tool 110 in the same direction by reciprocatingly displacing the Z-axis drive mechanism 122 around the Z-axis direction, and the operation is controlled by the control device 130.
- An electric motor for example, a pulse motor
- This ⁇ -axis drive mechanism 123 is supported by a Y-axis drive mechanism 124.
- the Y-axis drive mechanism 124 reciprocally displaces the fluid discharger 110 in the same direction by reciprocating the ⁇ -axis drive mechanism 123 in the Y-axis direction orthogonal to the Z-axis direction (the depth direction in the drawing). It is a device, and is constituted by a feed screw mechanism (not shown) provided with an electric motor (for example, a servo motor) that is operation-controlled by the control device 130.
- the Y axis drive mechanism 124 is supported by the X axis drive mechanism 125.
- the X-axis drive mechanism 125 reciprocally displaces the fluid discharger 110 in the same direction by reciprocatingly displacing the Y-axis drive mechanism 124 in the X-axis direction (left-right direction in the drawing) orthogonal to the Z-axis direction and the Y-axis direction, respectively. And a feed screw mechanism (not shown) provided with an electric motor (for example, a servo motor) that is controlled by the control device 130.
- the X-axis drive mechanism 125 is supported by a support frame (not shown) in the end surface coating apparatus 100.
- the control device 130 is configured by a microcomputer, and includes a workpiece holder 101, a suction pump 103, a syringe pump 121, a Z-axis drive mechanism 122, a ⁇ -axis drive mechanism 123, a Y-axis drive mechanism 124, and an X-axis drive mechanism 125. Each operation is controlled individually. That is, the control device 130 corresponds to control means according to the present invention.
- the control device 130 includes an input device 131 including an operator for inputting an instruction from an operator, and a display device 132 including a liquid crystal display for displaying an operating state of the control device 130.
- the end surface coating apparatus 100 uses power introduced from a power source as a work holder 101, a suction pump 103, a syringe pump 121, a Z-axis drive mechanism 122, a ⁇ -axis drive mechanism 123, a Y-axis drive mechanism 124, and an X-axis drive mechanism 125. And a power supply for supplying to various electric devices such as the control device 130, an exterior cover surrounding each of these components, and a fluid 95 applied to the end surface 91 of the glass substrate 90 for irradiating and curing ultraviolet rays.
- a UV light source since these are not directly related to the present invention, the description thereof is omitted.
- the operator sets the glass substrate 90 on the work holder 101. Specifically, the operator places the glass substrate 90 on the holding surface 102 of the work holder 101 and then operates the input device 131 to operate the suction pump 103 to place the holding surface 102. A negative pressure is generated on the glass substrate 90 to hold it. Thereby, the glass substrate 90 is fixedly held in a horizontal state on the holding surface 102 of the work holder 101 (see FIG. 1).
- the end surface coating apparatus 100 can form the holding surface 102 so that the glass substrate 90 is placed in a predetermined direction.
- the end surface coating apparatus 100 may specify the orientation of the glass substrate 90 using a captured image obtained by capturing the glass substrate 90 held on the holding surface 102 with an imaging device such as a camera.
- the end surface coating apparatus 100 can be configured to place the glass substrate 90 on the holding surface 102 using a transport device that holds the glass substrate 90 and places it on the holding surface 102.
- the glass substrate 90 is cut into a predetermined shape using a cutting tool such as a cutter in a previous process of setting the glass substrate 90 in the end face coating apparatus 100, and then the end surface 91 is polished using a grinding tool such as a brush. .
- the worker applies the fluid 95 on the end surface 91 of the glass substrate 90 held on the workpiece holder 101.
- the operator instructs the control device 130 to start the application work of the fluid 95 via the input device 131.
- the control device 130 executes a fluid coating program (not shown) and starts the coating operation of the fluid 95 on the end surface 91 of the glass substrate 90.
- control device 130 controls the operations of the Z-axis drive mechanism 122, the ⁇ -axis drive mechanism 123, the Y-axis drive mechanism 124, and the X-axis drive mechanism 125, respectively, so that the fluid discharger 110 is placed on the glass substrate 90.
- the end face 91 is positioned at the application start position of the fluid 95.
- the fluid discharge tool 110 is positioned at a position where the discharge port 113 faces the end surface 91 via a predetermined clearance C (for example, 50 ⁇ m to 0.1 mm).
- the control device 130 may perform the coating operation first from any of the end surface 91 on the outer peripheral surface of the glass substrate 90 and the end surface 91 of the hole 93, but in the present embodiment, the control device 130 on the outer peripheral surface of the glass substrate 90. This is done from the end face 91.
- control device 130 controls the operation of the syringe pump 121 to push out the fluid 95 while discharging the fluid 95 from the discharge port 113 of the fluid discharge tool 110.
- the fluid discharger 110 is displaced along the end surface 91 of the glass substrate 90 by controlling the operations of the Y-axis drive mechanism 124 and the X-axis drive mechanism 125, respectively.
- the control device 130 operates the ⁇ -axis drive mechanism 123 when the fluid discharge tool 110 reaches the corner portion of the end surface 91 or the curved portion of the recess 92.
- the direction of the fluid discharge tool 110 is changed so that the discharge port 113 always faces the front surface with respect to the curved end surface 91.
- the fluid 95 discharged from the discharge port 113 is applied onto the end surface 91 of the glass substrate 90.
- the traveling direction of the nozzle 112 is indicated by a broken line arrow.
- the nozzle 112 being displaced may come into contact with the end surface 91 due to variations in the forming accuracy of the glass substrate 90 in the process of applying the fluid 95 to the end surface 91.
- the discharge port 113 is not completely blocked and a part of the opening portion S remains. Therefore, the end face coating apparatus 100 can ensure the discharge of the fluid 95 and apply it accurately even when the nozzle 112 contacts the end face 91 in the process of applying the fluid 95 to the end face 91.
- illustration of the fluid 95 is abbreviate
- the control device 130 applies the fluid 95 to the end surfaces 91 including the four sides including the concave portions 92 on the outer peripheral surface of the glass substrate 90, and then the fluid 95 is applied to the end surfaces 91 of the holes 93 in the glass substrate 90.
- Perform the coating operation Specifically, as shown in FIG. 4C, the control device 130 disposes the fluid ejector 110 after positioning the fluid ejector 110 on the hole 93 in a state of being positioned above the glass substrate 90. The tool 110 is lowered to enter the hole 93.
- control device 130 controls the operation of the syringe pump 121 to displace the fluid discharge tool 110 in the X axis direction, the Y axis direction, and the ⁇ axis direction while discharging the fluid 95 from the discharge port 113.
- a fluid 95 can be applied on the end face 91 of the hole 93.
- the control device 130 retracts the fluid discharge tool 110 from the periphery of the glass substrate 90, and then ends the end surface.
- the fluid 95 applied to 91 is irradiated with ultraviolet rays.
- the control device 130 can form the protective layer 94 by solidifying the fluid 95 applied to the end surface 91 of the glass substrate 90.
- the control device 130 releases the holding state of the glass substrate 90 by the work holder 101. Thereby, the operator can take out the glass substrate 90 in which the protective layer 94 is formed on the end surface 91 of the glass substrate 90 from the end surface coating apparatus 100.
- the end surface coating apparatus 100 has the discharge port 113 that discharges the fluid 95 in the state of facing the end surface 91 of the glass substrate 90 that is the application target. Since the nozzle 112 is disposed and the discharge port 113 is formed to have a size equal to or smaller than the thickness of the end surface 91 of the glass substrate 90, the fluid 95 is applied only to the end surface 91 of the glass substrate 90 with high accuracy. Can do. Further, in this end surface coating apparatus 100, since the nozzle 112 extends in a direction orthogonal to the plate surface of the glass substrate 90, the fluid 95 is applied not only to the outer peripheral end surface of the glass substrate 90 but also to the end surface 91 of the hole 93. Can be applied.
- the control device 130 controls the operation of the ⁇ -axis drive mechanism 123 so that the direction of the discharge port 113 faces the end surface 91. That is, the ⁇ -axis drive mechanism 123 corresponds to the rotation means according to the present invention.
- the control device 130 can direct the direction of the discharge port 113 to a direction other than the direction orthogonal to the traveling direction of the nozzle 112 when applying the fluid 95, for example, the front side or the rear side.
- the control device 130 has a constant thickness and a flat surface on the surface of the fluid 95 applied by directing the discharge port 113 toward the front side in the traveling direction of the nozzle 112. Can be formed. Further, in this case, the control device 130 can accurately apply the thin fluid 95 by moving the nozzle 112 closer to the end surface 91 of the glass substrate 90 to reduce the clearance C. Further, as shown in FIG. 6B, the control device 130 sets the thickness of the applied fluid by making the direction of the discharge port 113 rearward in the traveling direction of the nozzle 112, and the clearance C or more with respect to the end surface 91. And the surface of the protective layer 94 can be formed in a convex arc shape. In FIG. 6, the traveling direction of the nozzle 112 is indicated by a broken line arrow.
- the end surface coating apparatus 100 drives the ⁇ axis when the nozzle 112 does not need to be rotationally displaced around the Z axis, for example, when the fluid 95 is applied only to one linear end surface of the glass substrate 90.
- the mechanism 123 that is, the rotation means can be omitted. Thereby, the end surface coating apparatus 100 can simplify and reduce the size of the apparatus configuration.
- the control device 130 controls the operations of the Z-axis drive mechanism 122, the Y-axis drive mechanism 124, and the X-axis drive mechanism 125, respectively, so that the fluid discharger 110 is attached to the end surface 91 of the glass substrate 90.
- the fluid 95 was positioned at the coating start position. That is, the Z-axis drive mechanism 122, the Y-axis drive mechanism 124, and the X-axis drive mechanism 125 correspond to the ejection tool displacement means according to the present invention.
- the discharge tool displacing means is not necessarily limited to the above-described embodiment, as long as the fluid discharge tool 110 can be relatively displaced with respect to the glass substrate 90.
- the ejection tool displacement means can be configured by at least one of the Z-axis drive mechanism 122, the Y-axis drive mechanism 124, and the X-axis drive mechanism 125.
- the discharge tool displacing means may be a means for displacing the workpiece holder 101 instead of or in addition to the displacement of the fluid discharge tool 110.
- control device 130 is configured to apply the fluid 95 only to the end surface 91 by adjusting the amount of the fluid 95 discharged from the discharge port 113.
- control device 130 increases not only the end surface 91 but also each edge of the two plate surfaces of the glass substrate 90 adjacent to the end surface 91 by increasing the amount of the fluid 95 discharged from the discharge port 113. 95 can also be applied.
- the end surface 91 of the glass substrate 90 is formed in planar shape.
- the shape of the end surface 91 of the glass substrate 90 is not necessarily formed by one plane, and the edge of the end surface 91 may be chamfered, or the entire end surface 91 may be a curved surface. .
- the nozzle 112 is formed in a bottomed cylindrical shape.
- the nozzle 112 is formed such that at least a part of the outer peripheral surface is formed as a curved surface, thereby preventing the discharge port 113 from being completely blocked when the end surface 91 of the glass substrate 90 is contacted and stopping the discharge. be able to.
- the nozzle 112 only needs to be formed in a cylindrical shape extending in a direction orthogonal to the plate surface of the glass substrate 90 held by the workpiece holder 101. Therefore, the nozzle 112 can be formed in a shape other than a cylindrical shape, for example, a cross-sectional shape of a square, a polygon, or an ellipse.
- the discharge port 113 is configured by a circular hole smaller than the thickness of the end surface 91 in the glass substrate 90.
- the discharge port 113 is not limited to the above embodiment as long as the discharge port 113 is configured by a hole having a thickness equal to or less than the thickness of the end surface 91 of the glass substrate 90. Therefore, the discharge port 113 may be formed in a circular or non-circular hole having the same inner diameter as the thickness of the end surface 91 in the glass substrate 90.
- the work holder 101 is formed by extending the holding surface 102 in the horizontal direction.
- the workpiece holder 101 is not necessarily limited to the above embodiment as long as it can hold the glass substrate 90. Therefore, the workpiece holder 101 can be formed, for example, by extending the holding surface 102 in the vertical direction.
- the work holder 101 is configured to hold one glass substrate 90.
- the workpiece holder 101 can also be configured to hold a plurality of glass substrates 90.
- the end surface coating apparatus 100 can be configured to include a work holder 140 that can hold a plurality of glass substrates 90 in a stacked state.
- the work holder 140 mainly includes a cradle 141, a pressing body 142, and a pressing cylinder 143.
- the cradle 141 is a pedestal that supports a plurality of glass substrates 90 in a stacked state, and is formed in a metal plate-like body having a size capable of projecting the end surface 91 of the glass substrate 90.
- the pressing body 142 is a part for pressing from above the plurality of glass substrates 90 placed on the cradle 141 from above in the figure, and a metal plate-like body is formed at the tip of the metal cylindrical body. It is provided and configured.
- the pressing cylinder 143 is a drive source for making the pressing body 142 approach or separate from the receiving table 141, and is configured by a pneumatic cylinder that is controlled by the control device 130.
- the pressing cylinder 143 is supported by a support base (not shown) provided in the end surface coating apparatus 100.
- the end surface coating apparatus 100 includes a fluid discharger 110 that applies a fluid 95 to each end surface 91 of the plurality of glass substrates 90 placed on the cradle 141.
- the fluid discharge tool 110 includes a nozzle 112 extending along the stacking direction of the plurality of glass substrates 90 placed on the cradle 141, and each of the stacked glass substrates 90.
- Discharge ports 113 are formed at positions facing the end surfaces 91 respectively.
- illustration of the fluid 95 is abbreviate
- the X-axis drive mechanism 125 in the end surface coating apparatus 100 is provided on each end surface 91 projecting in one direction in the plurality of glass substrates 90 held by the work holder 140 (the end surface 91 projecting to the right in the drawing). On the other hand, it is provided so that the fluid discharge tool 110 may approach or separate.
- the operator arranges a plurality of glass substrates 90 on the cradle 141 in a stacked state, and then operates the input device 131 to control the plurality of glasses on the control device 130. Instructs clamping of the substrate 90.
- the control device 130 controls the operation of the pressing cylinder 143 to lower the pressing body 142, thereby holding the plurality of glass substrates 90 between the cradle 141 and the pressing body 142. Can do.
- the operator instructs the control device 130 to start the application work of the fluid 95 via the input device 131.
- the control device 130 positions the fluid discharge tool 110 on the end surface 91 of the glass substrate 90, and then displaces the fluid discharge tool 110 along the end surface 91 while discharging the fluid 95.
- the fluid 95 can be applied to each end face 91 at a time. According to this, the end surface coating apparatus 100 can efficiently apply the fluid 95 to the plurality of glass substrates 90.
- the end face coating apparatus 100 since the fluid 95 is applied to each end face 91 projecting in one direction in the plurality of glass substrates 90 (the end face 91 projecting to the right side in the drawing), the orientation of the fluid 95 is different.
- the glass substrate 90 is held again.
- the end surface coating apparatus 100 is configured so that the fluid discharge tool 110 can be displaced with respect to the periphery of the glass substrate 90 as in the above embodiment, or the plurality of glass substrates 90 held by the work holder 140 are rotated. It is also possible to omit the re-holding of the glass substrate 90 by providing a workpiece rotation mechanism that changes the orientation.
- the fluid 95 is made of a resin material for protecting the end surface 91 of the glass substrate 90.
- the fluid 95 may be other than the protective material, for example, an adhesive or a coating material that prevents leakage of light from the end surface 91 of the glass substrate 90.
- an opaque or colored paint that does not transmit light for example, a dark color such as black or a light color such as white
- ⁇ -axis drive mechanism 124 ... Y-axis drive mechanism, 125 ... X-axis drive mechanism, 130 ... Control device, 131 ... Input device, 132 ... Display device, DESCRIPTION OF SYMBOLS 140 ... Work holder, 141 ... Receiving part, 142 ... Press body, 143 ... Press cylinder
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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Abstract
Description
まず、本発明に係る端面塗布装置100を説明する前に、この端面塗布装置100の加工対象であるガラス基板90について説明する。このガラス基板90は、図2に示すように、スマートフォンなどの携帯端末装置(図示せず)における液晶ディスプレイを構成する部品であり、ガラス材を板状に形成して構成されている。この場合、ガラス基板90の平面視における大きさは携帯端末装置の大きさより一回り小さい形状に形成されるとともに、ガラス基板90の厚さは概ね0.1mm~1.0mmである。本実施形態においては、ガラス基板90は、長辺が130mm、短辺が70mm、厚さが0.5mmの平面視で略長方形状に形成されている。
端面塗布装置100は、ワーク保持具101を備えている。ワーク保持具101は、加工対象である1枚のガラス基板90を着脱自在に保持する装置であり、ガラス基板90の板面を保持する平面状の保持面102を備えている。保持面102は、ガラス基板90を負圧によって吸着するための部分であり、空気を吸引して負圧を発生させるための複数の孔部が形成されている。これらの孔部には、後述する制御装置130によって作動制御されて空気を吸引する吸引ポンプ103がそれぞれ接続されている。
次に、このように構成された端面塗布装置100の作動につい説明する。まず、端面塗布装置100を用いてガラス基板90の端面91に流動体95を塗布して端面91上に保護層94を形成する作業者は、端面塗布装置100における図示しない電源スイッチをONにすることにより制御装置130を起動させる。これにより、制御装置130は、ROMなどの記憶装置に予め記憶された制御プログラムを実行することによって作動を開始して作業者からの指示を待つ待機状態となる。
90…ガラス基板、91…端面、92…凹部、93…孔部、94…保護層、95…流動体、
100…端面塗布装置、
101…ワーク保持具、102…保持面、103…吸引ポンプ、
110…流動体吐出具、111…胴部、111a…取付部、112…ノズル、113…吐出口、114…流路、
120…ホルダ、121…シリンジポンプ、122…Z軸駆動機構、123…θ軸駆動機構、124…Y軸駆動機構、125…X軸駆動機構、
130…制御装置、131…入力装置、132…表示装置、
140…ワーク保持具、141…受け部、142…押圧体、143…押圧シリンダ。
Claims (4)
- 板状に形成されたガラス基板の端面に流動体を塗布する端面塗布装置であって、
前記ガラス基板を着脱自在に保持するワーク保持具と、
前記ワーク保持具に保持された前記ガラス基板の端面に対向した位置で同ガラス基板の板面に直交する方向に延びる有底筒状のノズルを有して前記流動体を吐出する流動体吐出具と、
前記流動体吐出具に前記流動体を供給する流動体供給手段と、
前記流動体吐出具を前記ワーク保持具に対して相対的に変位させる吐出具変位手段と、
前記流動体供給手段および前記吐出具変位手段の作動を制御する制御手段とを備え、
前記流動体吐出具は、
前記ノズルの側面における前記ガラス基板の端面に対向する位置に同端面の板厚以下の大きさで開口して前記流動体を吐出する吐出口が形成されており、
前記制御手段は、
前記吐出具変位手段の作動を制御して前記ノズルを前記ガラス基板の端面に沿って相対変位させながら前記流動体供給手段の作動を制御して前記吐出口から前記流動体を吐出させることを特徴とする端面塗布装置。 - 請求項1に記載した端面塗布装置において、さらに、
前記ノズルを軸線周りに回動させる自転手段を備え、
前記制御手段は、前記自転手段の作動を制御することを特徴とする端面塗布装置。 - 請求項1または請求項2に記載した端面塗布装置において、
前記ノズルは、少なくとも前記吐出口が開口する外周面が曲面に形成されていることを特徴とする端面塗布装置。 - 請求項1ないし請求項3のうちのいずれか1つに記載した端面塗布装置において、
前記ワーク保持具は、
前記ガラス基板を複数積層した状態で保持することができ、
前記流動体吐出具は、
前記吐出口が前記複数のガラス基板に対応する位置に前記ノズルの軸線方向に沿って複数形成されていることを特徴とする端面塗布装置。
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