WO2014188547A1 - Dispositif de revêtement et dispositif de réglage de débit - Google Patents

Dispositif de revêtement et dispositif de réglage de débit Download PDF

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Publication number
WO2014188547A1
WO2014188547A1 PCT/JP2013/064270 JP2013064270W WO2014188547A1 WO 2014188547 A1 WO2014188547 A1 WO 2014188547A1 JP 2013064270 W JP2013064270 W JP 2013064270W WO 2014188547 A1 WO2014188547 A1 WO 2014188547A1
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WO
WIPO (PCT)
Prior art keywords
paint
movable member
flow path
orifice
primary chamber
Prior art date
Application number
PCT/JP2013/064270
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English (en)
Japanese (ja)
Inventor
島田　哲也
Original Assignee
旭サナック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 旭サナック株式会社 filed Critical 旭サナック株式会社
Priority to JP2015517988A priority Critical patent/JPWO2014188547A1/ja
Priority to PCT/JP2013/064270 priority patent/WO2014188547A1/fr
Publication of WO2014188547A1 publication Critical patent/WO2014188547A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged
    • B05B12/087—Flow or presssure regulators, i.e. non-electric unitary devices comprising a sensing element, e.g. a piston or a membrane, and a controlling element, e.g. a valve
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/03—Control of flow with auxiliary non-electric power
    • 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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
    • B05C11/1007—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material
    • B05C11/1013—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material responsive to flow or pressure of liquid or other fluent material

Definitions

  • the present invention relates to a coating apparatus and a flow rate adjusting apparatus.
  • the coating gun described in Patent Document 1 has a configuration in which a needle valve is provided in a nozzle from which paint is discharged.
  • the paint supplied to this type of paint gun is usually adjusted to a predetermined pressure by a pressure regulator, and the discharge pressure of the paint from the nozzle is determined by the pressure loss when passing through the needle valve.
  • the pressure loss at the needle valve decreases as the viscosity of the paint decreases, and decreases as the flow rate of the paint decreases, so when supplying low viscosity paint to the paint gun at a low flow rate, the pressure to be adjusted by the pressure regulator The value of is also set low.
  • the range of pressure that can be adjusted in the pressure regulator is determined by the size of the valve that constitutes the pressure regulator, the degree of opening and closing, etc. Is about 0.02 MPa. Therefore, if the viscosity of the paint is small and the flow rate is low, the adjustment pressure value to be set by the pressure regulator is below the adjustable pressure range, and the pressure may not be adjusted. In this case, the pressure value to be adjusted by the pressure regulator can be set to a large value by increasing the pressure loss in the needle valve.
  • the opening in the needle valve that is, the cross-sectional area of the paint flow path may be reduced.
  • the needle valve has a structure in which conical needles are concentrically arranged in a circular valve port, the flow path is not a simple circular cross section but an annular shape. Therefore, when comparing a circular cross-section flow path and an annular flow path with the same cross-sectional area, the radial gap size of the circular cross-section flow path is smaller than the inner diameter dimension of the circular cross-section flow path. This means that when the opening of the needle valve is reduced, paint clogging in the needle valve is likely to occur.
  • the present invention has been completed based on the above circumstances, and an object thereof is to prevent clogging of paint.
  • the coating apparatus of the present invention is A paint flow path for supplying paint from a paint pumping source to the paint gun; A pressure regulator for adjusting the pressure of the paint pumped from the paint pumping source provided at a position upstream of the paint gun in the paint flow path; A flow rate adjusting device provided at a position between the coating gun and the pressure regulator in the paint flow path; An operating flow path provided in the flow rate adjusting device and constituting the paint flow path; A receiving portion formed on the inner periphery of the operating flow path; A movable member that constitutes the flow rate adjusting device and is movable between a closed position that contacts the receiving portion and a release position that is separated from the receiving portion; It is characterized in that an orifice is formed on the movable member, and communicates with an upstream end and a downstream end of the operating flow path when the movable member is in the closed position.
  • the flow rate adjusting device of the present invention is A paint flow path for supplying paint from the paint pressure supply source to the paint gun, and a position upstream of the paint gun in the paint flow path, and adjusting the pressure of the paint pumped from the paint pressure supply source
  • a coating apparatus provided with a pressure regulator, provided in a position between the coating gun and the pressure regulator in the paint flow path,
  • An operation flow path constituting the paint flow path;
  • a receiving portion formed on the inner periphery of the operating flow path;
  • a movable member movable between a closed position contacting the receiving portion and a release position spaced apart from the receiving portion; It is characterized in that an orifice is formed on the movable member, and communicates with an upstream end and a downstream end of the operating flow path when the movable member is in the closed position.
  • Example 2 The block diagram showing the structure of the coating apparatus of Example 1 Sectional view of the flow control device showing the state where the movable member is in the closed position Sectional view of the flow rate adjustment device showing the state where the movable member is in the release position Partial enlarged sectional view of the flow control device Bottom view of the main body constituting the movable member Partial expanded sectional view of the flow control device of Example 2
  • the coating device and the flow rate adjusting device of the present invention are:
  • the orifice may have a plurality of holes that are different from each other in flow direction and communicate with each other via a bent portion. According to this configuration, since a pressure loss occurs when the paint passes through the bent portion of the orifice, it is possible to increase the orifice inner diameter and increase the effect of preventing clogging of the paint in the orifice.
  • the coating device and the flow rate adjusting device of the present invention are: A primary chamber constituting a region upstream of the receiving portion of the operating channel; A groove portion that is formed in a region of the outer surface of the movable member facing the primary chamber and extends in a direction intersecting with a flow direction of the paint in the primary chamber, and communicates with an upstream end of the orifice. May be. According to this configuration, foreign matter that has entered the working flow channel from the paint flow channel is caught by the opening edge of the groove before reaching the upstream end of the orifice, so that there is no possibility that the orifice is blocked by the foreign material.
  • At least one end portion of both end portions in the length direction of the groove portion may be open to the outer surface of the movable member. According to this configuration, since at least one end of both end portions in the length direction of the groove is open to the outer surface of the movable member, the length of the groove is sufficiently ensured. Therefore, even if a part of the region at the opening edge of the groove is blocked by the foreign matter, the other region at the opening edge of the groove functions as a flow path that guides the paint to the orifice.
  • the coating device and the flow rate adjusting device of the present invention are: A primary chamber constituting a region upstream of the receiving portion of the operating channel; Formed in a region facing the primary chamber of the outer surface of the movable member, and a guide surface configured to reduce in diameter toward the upstream side of the primary chamber,
  • the inflow port at the upstream end of the orifice may be disposed at a position corresponding to the substantially center in the radial direction of the primary chamber. According to this configuration, the foreign matter that hits the guide surface moves in the outer peripheral side, that is, in a direction away from the inlet of the orifice, so there is no possibility that the inlet of the orifice is blocked by the foreign matter.
  • the coating device and the flow rate adjusting device of the present invention are as described in (4) above.
  • the guide surface may come into contact with the receiving portion when the movable member is in the closed position. According to this configuration, the foreign matter abutting against the guide surface moves to the position on the outermost peripheral side in the primary chamber, that is, the position farthest from the inlet of the orifice, so that the inlet of the orifice is blocked by the foreign matter. Can be surely prevented.
  • the coating apparatus A includes a paint flow path 10, a paint pressure feed source 14, a paint gun 15, a pressure regulator 16, a flow rate regulator 20, and a pressurized air pressure feed.
  • a power source 17 and an air regulator 18 are provided.
  • the paint channel 10 includes first to third channels 11, 12, and 13 arranged in series in order from the upstream side to the downstream side.
  • the upstream end of the first flow path 11 is connected to the paint pressure supply source 14, and the downstream end of the first flow path 11 is connected to the pressure regulator 16.
  • the upstream end of the second flow path 12 is connected to the pressure regulator 16, and the downstream end of the second flow path 12 is connected to the flow rate adjusting device 20.
  • the upstream end of the third flow path 13 is connected to the flow rate adjusting device 20, and the downstream end of the third flow path 13 is connected to the coating gun 15. That is, the pressure regulator 16 is disposed at a position upstream of the coating gun 15, and the flow rate adjusting device 20 is disposed upstream of the coating gun 15 and downstream of the pressure regulator 16.
  • the paint pumped from the paint pumping source 14 passes through the first flow path 11, the pressure regulator 16, the second flow path 12, the flow rate adjustment device 20, and the third flow path 13 in order, and is supplied to the coating gun 15. . While passing through this supply path, the paint is depressurized to a predetermined pressure, and is discharged from the nozzle (not shown) of the coating gun 15 at an appropriate pressure.
  • the pressure regulator 16 is supplied with pilot air fed from a pressurized air pressure feed source 17 and adjusted to a predetermined pressure by an air regulator 18. With this pilot air, the pressure regulator 16 reduces the pressure of the paint pumped from the paint pumping source 14 to a predetermined pressure and discharges it to the second flow path 12.
  • the flow rate of the paint discharged to the second flow path 12 is reduced in the process of passing through the flow rate adjusting device 20.
  • the paint causes a pressure loss, is discharged to the third flow path 13 in a state where the pressure is reduced to a predetermined pressure, and is supplied to the coating gun 15.
  • an on-off valve (not shown) provided on the nozzle is opened and closed, and the discharge operation of the paint from the nozzle is controlled.
  • the pressure loss of the paint when the on-off valve of the paint gun 15 is opened is set smaller than the pressure loss of the paint when passing through the flow rate adjusting device 20.
  • the on-off valve provided on the nozzle of the coating gun 15 may be a needle valve or a valve structure other than the needle valve.
  • the flow rate adjusting device 20 includes a casing 21, a movable member 30, an air cylinder 34, an urging spring 35, and a control valve 37.
  • a working channel 22 having a circular cross-sectional shape when cut horizontally.
  • a receiving portion 23 having a step shape is formed on the inner periphery of the operation flow channel 22 over the entire periphery.
  • a space below the receiving portion 23 in the operating channel 22 is a primary chamber 24.
  • a space above the receiving portion 23 in the operating flow path 22 is a secondary chamber 25 having a larger inner diameter than the primary chamber 24.
  • An inflow port 26 is formed at the lower end of the primary chamber 24, and the downstream end of the second flow path 12 is connected to the inflow port 26.
  • the secondary chamber 25 has an outflow port 27, and the outflow port 27 is connected to the upstream end of the third flow path 13. Therefore, the operation flow path 22 constituted by the primary chamber 24 and the secondary chamber 25 constitutes the paint flow path 10 as in the first to third flow paths 11, 12, and 13.
  • a working space 29 is formed at the upper end of the casing 21 and is disposed above the working flow path 22 and communicates with the upper end of the secondary chamber 25 through a guide hole 28 in the vertical direction.
  • the working space 29 constitutes an air cylinder 34 in cooperation with the piston portion 33 of the movable member 30.
  • the movable member 30 has a main body portion 31 disposed at a lower end portion thereof (an upstream end portion of the operation flow path 22), a shaft portion 32 that is connected to the upper end surface of the main body portion 31 and has an axis line directed in the vertical direction,
  • the piston portion 33 connected to the upper end portion of the shaft portion 32 is formed and configured to be able to move integrally.
  • the movable member 30 has a body portion 31 disposed in the operation flow path 22, a piston portion 33 disposed in the operation space 29, and a shaft portion 32 penetrating through the guide hole 28 in a liquid-tight manner, whereby the casing 21 It is attached so that it can move up and down.
  • the piston portion 33 can move in the vertical direction while maintaining an airtight state between the outer peripheral surface and the inner peripheral surface of the working space 29.
  • the movable member 30 (piston part 33) is urged downward by a urging spring 35 comprising a compression coil spring provided between the ceiling surface of the working space 29 and the upper end surface of the piston part 33.
  • An air supply port 36 is formed at a lower end portion of the working space 29 (that is, a region on the opposite side to the biasing spring 35 with the piston portion 33 interposed therebetween).
  • the air supply port 36 is connected to the downstream end of an air supply path 38 whose upstream end is connected to the control valve 37.
  • the cross-sectional shape of the movable member 30 cut in the horizontal direction is a true circle.
  • the main body 31 includes a constant diameter portion 39 and a conical portion 40.
  • the constant diameter portion 39 is disposed in the upper end side region of the main body portion 31, and the outer diameter dimension is constant from the upper end to the lower end.
  • the lower end of the shaft portion 32 is connected to the upper end surface of the constant diameter portion 39.
  • the conical portion 40 has a shape that protrudes concentrically downward from the lower end of the constant diameter portion 39, and the outer peripheral surface of the conical portion 40 is a guide surface 41 over the entire region.
  • the conical portion 40 and the guide surface 41 are tapered so that the outer diameter dimension decreases downward.
  • “downward” refers to the direction opposite to the direction in which the paint flows from the primary chamber 24 toward the secondary chamber 25 when the paint is discharged from the paint gun 15 (that is, the upstream side in the operation channel 22). Means.
  • the movable member 30 is biased downward (primary chamber 24 side) by the biasing spring 35.
  • the movable member 30 abuts the guide surface 41 against the receiving portion 23 in a liquid-tight manner over the entire circumference by the biasing force of the biasing spring 35.
  • Held in a closed position see FIG. 2.
  • a space for directly communicating the primary chamber 24 and the secondary chamber 25 is not formed between the outer periphery of the movable member 30 and the inner periphery of the operation flow path 22.
  • the movable member 30 moves to a release position (see FIG. 3) for separating the guide surface 41 from the receiving portion 23.
  • the guide surface 41 is separated from the receiving portion 23 over the entire circumference, so that there is a primary between the outer periphery of the movable member 30 and the inner periphery of the operation flow path 22.
  • a space that directly communicates the chamber 24 and the secondary chamber 25, that is, a space in which the paint flows is formed.
  • An orifice 42 is formed in the main body 31 as a means for causing a pressure loss in the flow rate adjusting device 20.
  • the orifice 42 is formed in a “T-shape” by communicating one first hole 43 and two second holes 44 at a bent portion 45.
  • the first hole 43 extends in a straight line parallel to the moving direction of the movable member 30 (the flow direction of the paint from the primary chamber 24 toward the secondary chamber 25), and the cross-sectional shape orthogonal to the length direction is true. It is circular.
  • the first hole 43 is disposed at a position concentric with the central axis of the movable member 30, that is, at a position corresponding to the center of the primary chamber 24 in the radial direction.
  • the upstream end of the first hole portion 43 opens as an inlet 46 on the lower end surface of the main body portion 31.
  • the inflow port 46 faces the primary chamber 24 with the movable member 30 in the closed position.
  • the second hole 44 extends linearly in the direction orthogonal to the first hole 43, and the cross-sectional shape orthogonal to the length direction is a true circle.
  • the inner diameter of the second hole 44 is the same as the inner diameter of the first hole 43.
  • the two second holes 44 are coaxial with each other and communicate directly with each other at the upstream ends.
  • the upstream ends of the two second holes 44 communicate with the downstream ends of the first holes 43 at a right angle.
  • the downstream ends of the two second hole portions 44 open as outlets 47 on the outer periphery of the constant diameter portion 39.
  • a groove portion 48 is formed at the lower end portion of the main body portion 31 (upstream end portion in the flow direction of the paint in the operation flow path 22) for capturing foreign matter in the paint.
  • the groove portion 48 is configured by intersecting two groove constituting portions 49 extending linearly in a direction perpendicular to (crossing) the flow direction of the paint in the primary chamber 24 at right angles on the central axis of the main body portion 31. . Accordingly, the groove 48 is recessed to form a “cross shape” when viewed in the same direction as the direction in which the paint flows from the primary chamber 24 toward the secondary chamber 25.
  • the inlet 46 of the orifice 42 is open.
  • the groove width dimension orthogonal to the length direction of the groove constituting part 49 is set to be larger than the inner diameter of the inflow port 46 (first hole part 43).
  • Both end portions in the length direction of the two groove constituting portions 49 are open in the horizontal direction on the outer surface (guide surface 41) of the conical portion 40. That is, the groove portion 48 is open to the lower end surface of the conical portion 40 and the lower end portion of the guide surface 41.
  • the entire open area of the groove portion 48 in the conical portion 40 faces only the primary chamber 24.
  • the movable member 30 When performing the painting, the movable member 30 is held in the closed position in the flow rate adjusting device 20. In this state, the paint adjusted to a predetermined pressure and flowing into the primary chamber 24 of the flow rate adjusting device 20 passes through the groove portion 48 and flows into the first hole portion 43 from the inflow port 46. It turns at the bent portion 45 at the downstream end and branches into two second holes 44, enters the secondary chamber 25 from the outlet 47 at the downstream end of the second hole 44, and enters the third flow from the outlet port 27. It flows into the path 13. In the process in which the paint passes through the flow rate adjusting device 20 through the above-described path, a pressure loss is generated by the orifice 42, and the paint is supplied to the coating gun 15 while being reduced to a predetermined pressure.
  • the inner diameter of the inlet 46 is extremely small compared with the primary chamber 24, so that a large flow resistance occurs when the paint flows into the orifice 42. Further, since the inner diameter of the orifice 42 is small, a large flow resistance is generated in the process of the paint passing through the first hole 43 and a large flow resistance is generated in the process of passing through the second hole 44.
  • the bent portion 45 that connects the downstream end of the first hole portion 43 and the upstream end of the second hole portion 44 has a flow path of the orifice 42 bent at a right angle. A large flow resistance occurs. In all regions or positions where the above-mentioned flow resistance occurs in the flow path of the paint, a pressure loss due to the flow resistance occurs. As a result, the coating gun 15 is supplied with the paint whose pressure has been reduced to an appropriate pressure, and discharges and paints the paint well.
  • the use of the orifice 42 as means for causing pressure loss in the flow rate adjusting device 20 has the following technical significance.
  • the pressure loss is small, so the pressure value to be adjusted by the pressure regulator 16 is a small value.
  • the range of the pressure value that can be adjusted by the pressure regulator 16 is determined by the size of the valve that constitutes the pressure regulator 16, the degree of opening and closing, and the like.
  • the adjustment limit value on the low pressure side is It is about 0.02 MPa.
  • the adjustment pressure value to be set by the pressure regulator 16 is below the adjustable pressure range, There is a risk that the pressure cannot be adjusted. Therefore, when the paint has a low viscosity and a low flow rate, it is necessary to increase the pressure loss and set the pressure value to be adjusted by the pressure regulator 16 to a large value.
  • a method in which a needle valve is provided in the coating gun 15 and the opening degree of the needle valve is conventionally known.
  • the needle valve conical needles are concentrically arranged inside a circular valve opening, and the flow path of the paint when the needle valve is opened is an annular shape, and the inner wall surface of the flow path is It consists of an inwardly curved surface that continues in the circumferential direction and an outwardly curved surface that continues in the circumferential direction.
  • the inner wall surface of the orifice 42 is composed of only a single curved surface continuous in the circumferential direction, and no solid member exists inside the orifice 42.
  • the inner diameter of the orifice 42 of the first embodiment is 0.5 mm
  • the inner diameter of the valve opening of the needle valve is 4 mm
  • the equivalent diameter of the flow path when the needle valve is opened is the orifice.
  • the radial clearance of the flow path when the needle valve is opened is 0.015 mm. Therefore, the inner diameter dimension of the orifice 42 is relatively large compared to the clearance of the needle valve. Therefore, the orifice 42 of the first embodiment is less likely to be clogged with paint as compared with a needle valve having an equivalent diameter. As described above, there is an advantage that the clogging of the paint is less likely to occur when the orifice 42 is used than when the pressure loss is generated using the needle valve.
  • the path through which the primary chamber 24 and the secondary chamber 25 communicate is only the narrow orifice 42. Therefore, when the paint flow path 10 is washed or after washing It takes time to newly fill the channel 10 with paint. Therefore, when cleaning the paint channel 10 or filling the paint channel 10 with the paint, the movable member 30 is moved to the release position. In this way, the gap between the receiving portion 23 and the movable member 30 (main body portion 31) is largely opened over the entire circumference, so that the primary chamber 24 and the movable member 30 are disposed between the receiving portion 23 and the movable member 30. A large communication path that communicates with the secondary chamber 25 is formed. Therefore, the cleaning process and the paint filling process can be completed in a short time.
  • pressure loss occurs in the entire region of the orifice 42 (that is, both the hole portions 43 and 44 of the first hole portion 43 and the second hole portion 44), and in addition, the first portion constituting the orifice 42 is formed.
  • the first hole portion 43 and the second hole portion 44 are different from each other in the flow direction of the paint and communicate with each other through the bent portion 45. Therefore, pressure loss increases due to the flow resistance when the paint passes through the bent portion 45 as compared with the orifice configured only by the linear hole portion.
  • the inner diameter of the orifice 42 can be increased by the amount of pressure loss at the bent portion 45, so that the effect of preventing paint clogging at the orifice 42 can be enhanced.
  • the region upstream of the receiving portion 23 in the operation channel 22 is set as the primary chamber 24, and the region facing the primary chamber 24 on the outer surface of the movable member 30 is A groove portion 48 is formed which extends in a direction intersecting with the flow direction of the paint in the primary chamber 24 and communicates with the upstream end (inlet 46) of the orifice 42.
  • both end portions in the length direction of the groove constituting portion 49 constituting the groove portion 48 are opened to the outer surface (guide surface 41) of the movable member 30, a sufficient length (opening region) of the groove portion 48 is ensured. Is done. Therefore, even if a part of the region at the opening edge of the groove 48 is blocked by the foreign matter, the other region at the opening edge of the groove 48 functions as a flow path that guides the paint to the orifice 42. Therefore, there is no possibility that the inflow of the paint into the orifice 42 is hindered.
  • a guide surface 41 having a diameter decreasing toward the upstream side of the primary chamber 24 is formed in a region facing the primary chamber 24, and an inlet 46 at the upstream end of the orifice 42 is formed.
  • the primary chamber 24 is disposed at a position corresponding to the approximate center in the radial direction. According to this configuration, when the foreign matter hits the guide surface 41, the foreign matter moves in the direction away from the inlet 46 of the orifice 42 due to the inclination of the guide surface 41. There is no possibility that 46 is blocked by foreign matter.
  • the guide surface 41 comes into contact with the receiving portion 23, so that the foreign matter in contact with the guide surface 41 is positioned on the outermost side in the primary chamber 24, That is, it moves to the position farthest from the inlet 46 of the orifice 42. Therefore, it is possible to reliably prevent the inlet 46 of the orifice 42 from being blocked by foreign matter. Even if the foreign matter abutting against the guide surface 41 moves to the position on the outermost peripheral side of the primary chamber 24 and accumulates in the vicinity of the receiving portion 23, the movable member 30 is moved to the release position and guided. If the surface 41 is separated from the receiving portion 23, the accumulated foreign matter passes between the guide surface 41 and the receiving portion 23 and flows out to the secondary chamber 25 side. Similarly, when cleaning, the foreign matter accumulated in the primary chamber 23 is discharged to the secondary chamber 25 side.
  • the main body 31 of the first embodiment is configured by the constant diameter portion 39 and the conical portion 40
  • the main body 62 of the second embodiment is configured by the constant diameter portion 63 and the hemispherical portion 64.
  • the outer surface of the hemispherical portion 64 serves as a guide surface 65 over the entire region, and the guide surface 65 comes into contact with the receiving portion 23 when the movable member 61 is in the closed position.
  • the main body 31 is formed with an orifice 66 and a groove 72 having the same form as in the first embodiment.
  • An orifice 66 is formed in the main body as a means for causing pressure loss.
  • the orifice 66 of the second embodiment is similar to the orifice 42 of the first embodiment by connecting a first hole 67 having a circular cross section and a second hole 68 having two circular cross sections at a bent portion 69. “T-shaped”.
  • the first hole 67 extends in a straight line parallel to the moving direction of the movable member 61, and is arranged at a position concentric with the central axis of the movable member 61.
  • the upstream end of the first hole 67 opens as an inlet 70 at the lower end surface of the main body 62, and the inlet 70 faces the primary chamber 24 with the movable member 61 in the closed position.
  • the two second holes 68 extend linearly in a direction perpendicular to the first holes 67, are coaxial with each other, and communicate directly with each other at the upstream ends.
  • the upstream ends of the two second holes 68 communicate with the downstream ends of the first holes 67 at a right angle.
  • the downstream ends of the two second hole portions 68 are opened as outlets 71 on the outer periphery of the constant diameter portion 63. In the state where the movable member 61 is in the closed position, the inflow port 71 faces the secondary chamber 25.
  • a groove 72 for capturing foreign matter in the paint is formed at the lower end of the main body, similar to the groove 48 of the first embodiment.
  • the groove portion 72 is configured by intersecting two groove forming portions 73 linearly extending in a direction perpendicular to the flow direction of the paint in the primary chamber 24 on the central axis of the main body portion 62 at a right angle. Accordingly, the groove 72 is recessed to form a “cross shape” when viewed in the same direction as the direction in which the paint flows from the primary chamber 24 toward the secondary chamber 25.
  • the inflow port 70 of the orifice 66 is open.
  • the groove width dimension orthogonal to the length direction of the groove constituting part 73 is a dimension larger than the inner diameter of the inflow port 70 (first hole part 67).
  • Both end portions in the length direction of the two groove constituting portions 73 are opened in the horizontal direction on the outer surface (guidance surface 65) of the hemispherical portion 64.
  • the present invention is not limited to the embodiments described with reference to the above description and drawings.
  • the cross-sectional shape of the orifice is a perfect circle, but the cross-sectional shape of the orifice may be a shape other than a true circle such as an ellipse or a rectangle.
  • the inlet at the upstream end of the orifice is arranged so as to correspond to the approximate center in the radial direction of the primary chamber.
  • the inlet of the orifice is arranged in the radial direction from the center of the primary chamber. You may arrange
  • the number of the first holes opened in the primary chamber when the movable member is in the closed position among the holes constituting the orifice is only one.
  • the number of holes may be plural.
  • the number of the second holes that are opened to the secondary chamber when the movable member is in the closed position among the holes that constitute the orifice is two.
  • the number of parts may be one, or three or more.
  • the orifice is formed in a “T shape” by one first hole and two second holes, but the shape along the flow direction of the orifice is “I”. It may be “letter shape”, “L shape”, “Y shape” or the like.
  • the shape of the groove when viewed in parallel with the flow direction of the paint in the primary chamber is “cross shape (a shape in which two groove components intersect at right angles)”.
  • the shape of the groove when viewed parallel to the flow direction of the paint in the primary chamber is “I-shaped”, “L-shaped”, “Y-shaped”, “* -shaped (crossing three groove components) ”,“ T-shape ”,“ U-shape ”,“ S-shape ”,“ H-shape ”,“ Z-shape ”,“ V-shape ”,“ N-shape ”, and the like.
  • both ends of the groove portion in the length direction are open to the outer surface of the movable member. However, at least one end portion of the both ends of the groove portion in the length direction is formed by the movable member. The form which is not open
  • released on an outer surface may be sufficient.
  • the foreign material capturing groove portion communicating with the upstream end of the orifice is formed in the upstream end region facing the primary chamber on the outer surface of the movable member. It is good also as a form which does not form.
  • the width of the groove is larger than the inner diameter of the orifice. However, the width of the groove may be the same as the inner diameter of the orifice.
  • only a part of the opening region of the groove portion of the outer surface of the movable member is a guide surface that is reduced in diameter toward the upstream side of the primary chamber.
  • the entire opening area of the groove portion may be a guide surface, and the entire opening area of the groove portion may be a plane perpendicular to the flow direction of the paint in the primary chamber.
  • the guide surface when the movable member is in the closed position, the guide surface is in contact with the receiving portion, but when the movable member is in the closed position, the outer surface of the movable member is A contact portion partitioned from the guide surface via a stepped portion or a corner portion may be formed, and the contact portion may be contacted with the receiving portion.
  • the pressure loss at the time of opening the coating gun on-off valve is made smaller than the pressure loss of the flow rate adjusting device. It may be the same as the pressure loss of the adjusting device.
  • the air cylinder is provided as means for driving the movable member.
  • the movable member is not limited to the air cylinder and may be driven by other means such as a solenoid.
  • the inner diameter of the second hole portion is the same as the inner diameter of the first hole portion, and pressure loss is caused in both the first hole portion and the second hole portion.
  • the present invention is not limited to this, and the inner diameter of the second hole portion may be made larger than the inner diameter of the first hole portion, and pressure loss may be caused mainly in the first hole portion.
  • the inner diameter of the portion may be made smaller than the inner diameter of the first hole portion, and pressure loss may be caused mainly in the second hole portion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Nozzles (AREA)
  • Fluid-Driven Valves (AREA)
  • Details Of Valves (AREA)
  • Spray Control Apparatus (AREA)
  • Coating Apparatus (AREA)
  • Flow Control (AREA)

Abstract

La présente invention a pour objet d'empêcher le colmatage de matériaux de revêtement. Le dispositif de revêtement comprend : une voie de passage de matériau de revêtement (10) qui fournit le matériau de revêtement à un pistolet de revêtement (15) à partir d'une source d'alimentation en matériau de revêtement sous pression (14) ; un dispositif de réglage de pression (16) qui règle la pression du matériau de revêtement et qui est disposé sur la voie de passage de matériau de revêtement (10) ; un dispositif de réglage de débit (20) disposé entre le pistolet de revêtement (15) et le dispositif de réglage de pression (16) dans la voie de passage de matériau de revêtement (10) ; une voie de passage opératoire (22) disposée dans le dispositif de réglage de débit (20) et constituant la voie de passage de matériau de revêtement (10) ; une partie de réception (23) formée sur la périphérie intérieure de la voie de passage opératoire (22) ; un élément mobile (30) qui constitue le dispositif de réglage de débit (20) et se déplace entre une position fermée en contact avec la partie de réception (23) et une position dégagée séparée de la partie de réception (23) ; et un orifice (42) formé dans l'élément mobile (30) et reliant un côté d'écoulement supérieur et un côté d'écoulement inférieur de la voie de passage opératoire (22) lorsque l'élément mobile (30) est dans la position fermée.
PCT/JP2013/064270 2013-05-22 2013-05-22 Dispositif de revêtement et dispositif de réglage de débit WO2014188547A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2015517988A JPWO2014188547A1 (ja) 2013-05-22 2013-05-22 塗装装置及び流量調整装置
PCT/JP2013/064270 WO2014188547A1 (fr) 2013-05-22 2013-05-22 Dispositif de revêtement et dispositif de réglage de débit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2013/064270 WO2014188547A1 (fr) 2013-05-22 2013-05-22 Dispositif de revêtement et dispositif de réglage de débit

Publications (1)

Publication Number Publication Date
WO2014188547A1 true WO2014188547A1 (fr) 2014-11-27

Family

ID=51933132

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2013/064270 WO2014188547A1 (fr) 2013-05-22 2013-05-22 Dispositif de revêtement et dispositif de réglage de débit

Country Status (2)

Country Link
JP (1) JPWO2014188547A1 (fr)
WO (1) WO2014188547A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4623016Y1 (fr) * 1967-02-06 1971-08-09
JP2001219110A (ja) * 2000-02-09 2001-08-14 Anest Iwata Corp 塗料流量切換弁
JP2006284088A (ja) * 2005-03-31 2006-10-19 Daikin Ind Ltd 膨張弁及び冷凍装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4623016Y1 (fr) * 1967-02-06 1971-08-09
JP2001219110A (ja) * 2000-02-09 2001-08-14 Anest Iwata Corp 塗料流量切換弁
JP2006284088A (ja) * 2005-03-31 2006-10-19 Daikin Ind Ltd 膨張弁及び冷凍装置

Also Published As

Publication number Publication date
JPWO2014188547A1 (ja) 2017-02-23

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