JP2007021390A - Spray nozzle for coating glass-vessel and spray apparatus for coating glass-vessel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spray nozzle and a spray apparatus, wherein a coating liquid is hard to adhere to the inner part of a glass vessel and is also hard to adhere to an unnecessary part excepting an opening part of the glass vessel when coating the opening part of the glass vessel. <P>SOLUTION: A long sideways slit-like discharge opening which is formed horizontally, is formed in the side of a nozzle tip of the tip end. The coating liquid is hard to adhere to the inner side of the vessel as a mist is sprayed nearly horizontally, adhesion of an unnecessary coating liquid excepting the opening part can be prevented as the longitudinal broadening angle of the mist is small, and the periphery of the opening and the top side can be uniformly coated as the horizontal broadening angle of the mist is large. If a suction part is arranged facing to the discharge opening, an excess mist not adhering to the opening part of the glass vessel, is sucked and the coating liquid becomes hard to adhere to the inner side of the vessel further. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a glass container coating spray nozzle that sprays a coating liquid or the like on a glass container, and a glass container coating that sprays a liquid such as a coating liquid onto a glass container that is sent on a moving means such as a conveyor. In particular, the present invention relates to a device suitable for adhering a liquid such as a coating liquid to the mouth of a glass container.

A spray nozzle and a spray device used for coating a glass container are disclosed in, for example, Patent Document 1 below. As shown in FIG. 7, this nozzle has a nozzle tip 11 having a discharge port 12 formed in a dome shape, the discharge port 12 having a slit shape toward the center from the outside of the dome shape tip, It is formed outside.
JP 2000-246151 A

  It is well known that strength deterioration can be prevented by coating the outer surface of a glass container with resin or the like. The mouth part of the glass container has a complicated shape and is also subject to external impacts, so a defect called `` mouth chipping '' is likely to occur, and in order to prevent deterioration of the mouth strength, the mouth part is also made of resin, etc. There is a strong demand for coating.

  Further, there is a case where a sealing material is bonded to the mouth portion of the glass bottle by so-called heat sealing. However, there is a problem that when the glass is weathered, the adhesive strength of the sealing material is reduced. In order to prevent this, there is a demand for coating the mouth of the glass container with a substance that prevents weathering.

  As described above, there is a strong demand for coating the mouth portion of the glass container, but in reality, the mouth portion is not often coated. This is because if the container mouth is coated, the coating liquid may adhere to the inner surface of the container, which may cause an unexpected situation. FIG. 8 shows a case where coating is performed on the mouth portion of the glass bottle G with the nozzle 13 of Patent Document 1. Since the mist m is sprayed downward, the coating liquid tends to adhere to the inner surface of the glass bottle. Moreover, since the mist spread angle in the vertical direction is large, the coating liquid adheres to unnecessary portions other than the mouth portion.

  The present invention develops a spray nozzle and a spray device that prevent coating liquid from adhering to the inside of the container when coating on the mouth of a glass container, and to prevent the coating liquid from adhering to unnecessary parts other than the mouth. It was made for that purpose.

[Configuration 1]
In the present invention, a gas and a liquid are respectively supplied from a gas inlet and a liquid inlet formed in the nozzle body, and the gas and the liquid are mixed in a mixing chamber in the nozzle body, and the gas is discharged from the discharge port of the nozzle tip at the tip. This is a two-fluid nozzle that sprays a mist mixed with a liquid, and has a horizontally elongated discharge port formed in the horizontal direction on the side surface of the tip nozzle tip. is there.

[Configuration 2]
Further, the present invention is an apparatus for spraying a liquid onto a glass container that flows on a moving means in a plurality of rows in an aligned state, and includes a supporting means installed in the width direction above the moving means, A travel means that travels along the support means; and a nozzle that is fixed to the travel means, and the travel means travels along the support means so that the nozzles pass between the rows in the width direction of the glass containers. In a glass container coating spray device that moves and sprays liquid onto the glass container from the discharge port at the tip of the nozzle, the nozzle is the nozzle of the configuration 1, and the mist that sucks excess mist into the traveling means The glass container coating spray device is characterized in that a suction part is provided, and the suction port of the suction part is provided facing the discharge port of the nozzle with a predetermined interval.

[Configuration 3]
Further, the present invention provides the spray device according to the configuration 2, comprising the four nozzles arranged in a quadrilateral shape, and the discharge port of each nozzle has an outer side of the quadrilateral so that mist is sprayed radially. A spray device for coating a glass container, characterized in that

  Since the discharge port of the nozzle of the present invention has the above-described configuration, the mist is jetted substantially in the horizontal direction, and the coating liquid hardly adheres to the inner surface of the container. In addition, since the mist spread angle in the vertical direction is small, it is possible to prevent unnecessary coating liquid from adhering to other than the mouth, and since the mist spread angle in the horizontal direction is large, coating can be applied evenly on the outer periphery of the mouth and the top surface. .

  Since the spray device of the present invention is provided with the suction part, excess mist that did not adhere to the mouth part of the glass container is sucked from the suction part of the suction part, and the mist flying in the air falls into the container. It is possible to prevent the coating liquid from adhering to the container.

  By providing four nozzles arranged in a quadrilateral shape, it is possible to perform coating evenly on the mouths of all the aligned glass bottles. Further, since the mist is ejected radially outward from the apex portion of the quadrilateral, the mist from each nozzle does not interfere with each other, and the coating liquid adheres to the inner surface of the container due to the turbulent air flow generated by the interference between the mists. Can be prevented.

  Hereinafter, the present invention will be described in detail with reference to the drawings relating to embodiments of the present invention. 1 is a longitudinal sectional view of the nozzle 1 of the embodiment, FIG. 2 is a front view of the nozzle tip 7 at the tip of the nozzle 1, FIG. 3 is a front view of the spray device 20 of the embodiment, and FIG. 4 is a plan view of the spray device 20. 5 is an explanatory side view showing a state in which the glass container G is sprayed in the spray device 20, and FIG. 6 is an explanatory plan view showing the positional relationship between the nozzle 1 and the suction port.

  As shown in FIG. 1, the nozzle 1 includes a liquid inlet 2, a gas inlet 3, a pilot air inlet 4, a mixing chamber 5, a tubular portion 6, a nozzle tip 7, a discharge port 8, a piston 9, and a coil spring 10. Have. The liquid inlet 2 is for the spray liquid, the gas inlet 3 is the spray air for mixing with the spray liquid, and the pilot air inlet 4 is the part where the pilot air for turning on / off the spray flows. (Not shown) are connected. FIG. 1 shows an ON state. In this state, the spray liquid reaches the nozzle tip 7 through the mixing chamber 5 and the tubular portion 6 as indicated by the arrow A, and the spray air flows from the inside of the piston 9 as indicated by the arrow B. It reaches the nozzle tip 7 through the mixing chamber 5 and the tubular portion 6. That is, the spray liquid and the spray air are mixed in the mixing chamber 5, reach the nozzle tip 7 from the tubular portion 6, and are ejected from the discharge port 8 at the distal end portion to spray the spray liquid. The pilot air is for turning on / off the spray. In the on state, the pilot air is not supplied and the piston 9 is raised by the pressure of the spray air, and the inlet of the tubular portion 6 is opened. When pilot air is supplied, the piston 9 is lowered by the pressure, the inlet of the tubular portion 6 is closed, and the spray liquid is shut off. The coil spring 10 is provided to balance the pressure of the spray air.

  As shown in FIGS. 1 and 2, a discharge port 8 is open on the side surface of the tip of the nozzle chip 7. The discharge port 8 has a horizontally long slit shape and is formed horizontally. Since the mist is ejected from the discharge port in a substantially horizontal direction, the coating liquid is difficult to adhere to the inner surface of the container. Since the mist spread angle in the vertical direction is small, it is possible to prevent unnecessary coating liquid from adhering to other than the mouth, and since the mist spread angle in the horizontal direction is large, coating can be performed evenly on the outer periphery of the mouth and the top surface.

  The glass container coating spray device 20 shown in FIGS. 3 and 4 sprays the coating liquid onto the glass container mouth at the end of the slow cooling furnace in the glass container manufacturing process. As shown in FIG. 4, the glass container G flows in the arrow Y direction in an aligned state on the slow cooling furnace conveyor 32 as a moving means. The spray device 20 includes a column 21 erected from the frame of the slow cooling furnace conveyor 32, a beam member 22 spanned in the width direction above the column 21, and a rail which is a support means supported by the beam member 22 at a rotation fulcrum 24. 23. A carriage 25 as a traveling means is provided on the rail 23, and this carriage is connected to a belt 30 operated by a motor 28 and reciprocates on the rail 23. A suspension post 31 is suspended from the carriage 25, and the four nozzles 1 are fixed downward to an arm 26 protruding in the horizontal direction from the lower end thereof. Each nozzle 1 has the same configuration as that shown in FIG. The four nozzles 1 are installed such that the planar shape is a quadrilateral. The discharge port of the nozzle is directed to the outside of the quadrilateral of the nozzle so that mist is sprayed radially. In addition, four suction portions 33 for sucking excess mist are fixed to the arm 26. The suction port of each suction part 33 is provided opposite to the discharge port of the nozzle with a predetermined interval (interval in which the glass bottle enters). The suction part 33 is connected to a vacuum device (not shown) by a hose 35.

  The rail 23 can be slightly inclined with respect to the width direction with the rotation fulcrum 24 serving as a fulcrum as the cylinder 27 enters and exits. FIG. 4 shows a case where the carriage 25 is traveling in the X direction (left direction in the figure), and the glass container G is moving in the Y direction. It moves between the columns in the width direction. When the carriage 25 travels in the X ′ direction, the cylinder 27 retracts and the rail 23 tilts in the opposite direction with respect to the width direction. In this way, spraying of the spray liquid onto the glass container is performed while moving in a direction substantially perpendicular to the flow direction of the glass container G (width direction) by the nozzle 1 attached to the carriage 25. The reciprocating operation of the cart 25 is intermittently operated by checking the arrangement of the glass containers by taking timing with sensors 29 attached to both ends of the slow cooling furnace conveyor. The nozzle on / off control is synchronized with the traveling or stopping of the carriage. The basic structure of such a spray device is the same as a conventional device.

  Next, the positional relationship between the nozzle and the suction port will be described with reference to FIG. In the figure, the glass bottle flows in the direction of arrow Y, and the nozzle 1 and the suction part 33 move in the directions of arrows X and X '. The nozzle 1 is installed so as to be positioned at the apex portion of the quadrangle a having a size surrounding one glass bottle. The discharge port is installed so that the center line c of the mist m faces the outside of the quadrangle a. Thereby, since the mist is ejected radially from the apex portion of the quadrangle a, the mists from the nozzles do not interfere with each other to generate turbulence. When turbulent airflow occurs, the coating liquid may adhere to the inner surface of the container. In FIG. 6, two suction parts 33 are provided. The number of suction portions is not necessarily the same as the number of nozzles, and the number of suction portions may be increased and the number thereof may be reduced. The suction port 34 is provided so as to face the discharge port at an appropriate interval from the discharge port of the nozzle (interval at which the glass bottle enters). Therefore, as shown in FIG. 5, since excess mist that has not adhered to the mouth of the glass container is sucked from the suction port 34, the mist flying in the air falls into the container and the coating liquid is put into the container. Can be prevented.

It is a longitudinal cross-sectional view of the nozzle 1 of an Example. 2 is a front view of a nozzle tip 7 at the tip of a nozzle 1. FIG. It is a front view of the spray apparatus 20 of an Example. 3 is a plan view of the spray device 20. FIG. It is side surface explanatory drawing of the state sprayed on the glass container G opening part in the spray apparatus 20. FIG. 4 is an explanatory plan view showing the positional relationship between the nozzle 1 and the suction port 34. FIG. It is a front view of the nozzle tip 11 of the conventional nozzle. It is explanatory drawing in the case of coating a glass container opening part with the conventional nozzle 13. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Nozzle 2 Liquid inflow port 3 Gas inflow port 4 Pilot air inflow port 5 Mixing chamber 6 Tubular part 7 Nozzle tip 8 Discharge port 9 Piston 10 Coil spring 11 Nozzle tip 12 Discharge port 13 Nozzle 20 Spray device 21 Prop 22 Beam material 23 Rail 24 fulcrum 25 cart 26 arm 27 cylinder 28 motor 29 sensor 30 belt 31 hanging post 32 slow cooling furnace conveyor 33 suction part 34 suction port 35 hose G glass bottle m mist a quadrilateral

Claims (3)

  Gas and liquid are respectively supplied from the gas inlet and liquid inlet formed in the nozzle body, and the gas and liquid are mixed in the mixing chamber in the nozzle body, and the gas and liquid are mixed from the discharge port of the tip nozzle tip. A spray nozzle for glass container coating, characterized by having a horizontally elongated discharge port formed in the horizontal direction on the side surface of the tip nozzle tip.   An apparatus for spraying a liquid onto a glass container that flows on a moving means in a plurality of rows in an aligned state, the supporting means extending in the width direction above the moving means, and along the supporting means A traveling means that travels; and a nozzle that is fixed to the traveling means. The nozzle travels between the rows in the width direction of the glass container as the traveling means travels along the support means. In the glass container coating spray device for spraying liquid onto the glass container from the discharge port at the tip, the nozzle is the nozzle of claim 1 and a mist suction part for sucking excess mist is provided in the traveling means. A glass container coating spray device, wherein the suction port of the suction portion is provided to face the discharge port of the nozzle at a predetermined interval.   3. The spray device according to claim 2, comprising four nozzles arranged in a quadrilateral shape, and an outlet of each nozzle is directed to the outside of the quadrilateral so that mist is sprayed radially. A spray apparatus for coating a glass container.

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