JP2016165671A - Nozzle unit with brush - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nozzle unit with a brush which can reduce cost and improve handleability.SOLUTION: A nozzle unit of this invention has a cylindrical support 13 having inside a cylindrical guide face 57 the tip side of which enlarges in diameter, a cylindrical brush 15 supported detachably by the tip side of the support 13 to extend ahead of the support 13, a nozzle 21 provided inside the support 13, consisting of a pipe material having flexibility the tip side of which is the free end, and jetting a fluid by directing to the brush 15 out of the tip while making slewing motion under the guide of the cylindrical guide face 57 by making the supplied fluid pass to the base end side, and a cylindrical slide body 23 slidably supported by the outer peripheral face side of the support 13, where the slide body 23 can cover the brush 15 from the outer peripheral face side to keep the coverage variable with slide positions.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a nozzle unit with a brush.

  There is a fluid ejection gun that causes fine vibrations in a brush by ejecting fluid from a tip of a nozzle that swivels within the cylindrical guide toward a brush implanted in the cylindrical guide (see, for example, Patent Document 1). .

International Publication No. 2009/004744

  When replacing the brush that has deteriorated, or when replacing the brush to change the specifications, the above-mentioned fluid ejection gun can be used together with the brush because the brush is implanted in the cylindrical guide. It needs to be replaced, resulting in high costs. Moreover, since the above-mentioned fluid ejection gun cannot adjust the stiffness of the brush, there is room for improvement in terms of usability.

  Therefore, an object of this invention is to provide the nozzle unit with a brush which can reduce cost and can improve usability.

  In order to achieve the above object, the present invention provides a cylindrical support body having a cylindrical guide surface whose diameter on the front end side is increased, and a support body that is detachably supported on the front end side of the support body. A cylindrical brush that extends forward, and a tube that is provided on the inner side of the support and is made of a flexible tube whose distal end is a free end, allows fluid supplied to the proximal end to pass therethrough. A nozzle that swirls and moves toward the brush from the tip while performing a swiveling motion with a guide of a cylindrical guide surface, and a cylindrical slide body that is slidably supported on the outer peripheral side of the support body, The slide body can cover the brush from the outer peripheral side, and the covering amount is variable depending on the slide position.

  According to the present invention, since the brush is removably supported by the support, the support that supports the brush can be reused as it is when the brush is replaced. Therefore, cost can be reduced. In addition, since the cylindrical slide body that is slidably supported on the outer peripheral side of the support body can cover the brush from the outer peripheral side and the covering amount is variable depending on the slide position, if the covering amount is increased The stiffness of the brush can be strengthened, and the stiffness of the brush can be weakened if the coating amount is reduced. That is, the stiffness of the brush can be adjusted. Therefore, usability can be improved.

It is a sectional side view which shows the nozzle unit with a brush which concerns on one Embodiment of this invention. It is a rear view which shows the brush of the nozzle unit with a brush which concerns on one Embodiment of this invention. It is a sectional side view which shows the nozzle unit with a brush which concerns on one Embodiment of this invention.

  A nozzle unit with a brush according to an embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the nozzle unit with brush 10 according to the present embodiment is used by being attached to a fluid supply means X such as a gun or a pipe for supplying a fluid. In the nozzle unit with brush 10, the attachment side to the fluid supply means X, that is, the fluid introduction side, is the base end side, and the side opposite to the base end side, that is, the fluid ejection side is the front end side.

  The nozzle unit with brush 10 includes a hollow connecting member 11 constituting a base end portion thereof, a hollow nozzle holding member 12 screwed into an inner peripheral portion on the distal end side of the connecting member 11, and a distal end side of the connecting member 11. A cylindrical support body 13 whose base end side is screwed to the outer periphery of the support member 13, a washer 14 interposed between the connecting member 11 and the support body 13, and a detachable support on the distal end side of the support body 13. And a cylindrical brush 15.

  Further, the nozzle unit with brush 10 is related to the nozzle holding member 12 with a tubular nozzle 21 disposed on the inner side of the support 13 with a base end attached to the tip of the nozzle holding member 12 and the nozzle 21 interposed therebetween. It has a C-shaped ring 22 that restricts the disengagement of the nozzle 21 from the nozzle holding member 12 by being stopped, and a cylindrical slide body 23 that is slidably supported on the outer peripheral side of the support body 13. Yes.

  The connecting member 11 has a male screw 31 formed on the outer peripheral portion on the proximal end side, and a male screw 32 formed on the outer peripheral portion on the distal end side. In the connecting member 11, a hexagonal column-shaped nut portion 33 is formed at an intermediate portion between the male screw 31 and the male screw 32. A fluid supply means X for supplying fluid into the connecting member 11 is screwed onto the proximal end male screw 31. The fluid supplied from the fluid supply means X is discharged from the tip of the nozzle 21 through the inside of the connecting member 11, the inside of the nozzle holding member 12, and further the inside of the nozzle 21.

  The nozzle 21 as a whole is, for example, a nozzle body 41 made of a flexible synthetic resin tube material such as nylon, polytetrafluoroethylene, polyurethane, polypropylene, and the outer peripheral portion on the tip side of the nozzle body 41. A plurality of synthetic resin cylindrical balancers 42 are attached in the length direction of the nozzle body 41 at predetermined intervals. The nozzle 21 has a base end side fixed to the nozzle holding member 12 to be a fixed end, and a tip end side not fixed to the nozzle holding member 12 but a free end.

  The support 13 described above is screwed into the male screw 32 of the connecting member 11. The support 13 includes a support body 51 made of a synthetic resin material having low flexibility and a metal guide member 52. The support body 51 includes a cylindrical portion 53 and a conical cylinder portion 54 that extends from the tip of the cylindrical portion 53 so as to expand in diameter. A female screw 55 that is screwed into the male screw 32 of the connecting member 11 is formed on the inner peripheral portion on the proximal end side of the cylindrical portion 53. An annular mounting groove 56 that is recessed radially inward is formed on the outer peripheral portion of the conical tube portion 54 opposite to the cylindrical portion 53, that is, on the distal end side.

  The guide member 52 has a conical cylinder shape that is equal in taper to the conical cylinder portion 54 of the support body 51, and is fitted to the inner peripheral portion of the conical cylinder portion 54 and fixed with an adhesive or the like. The guide member 52 slightly protrudes toward the tip side from the conical cylinder portion 54, and the nozzle 21 is inserted inside thereof. The nozzle 21 protrudes to the tip side from the guide member 52, and thus protrudes to the tip side from the support body 13. The inner peripheral surface of the guide member 52 is a cylindrical guide surface 57 whose diameter is increased on the tip side, and thus the support 13 has a cylindrical guide surface 57 on the inner side. The nozzle 21 rotates by the guide of the cylindrical guide surface 57 when the fluid supplied to the proximal end is allowed to pass through and ejected from the distal end.

  The brush 15 includes a metal base member 61 and a plurality of synthetic resin-made flexible hair bodies 62 implanted in the base member 61. The base member 61 is formed by bending a linear metal member having a U-shaped cross section into an annular shape. Specifically, a large number of hair bodies 62 are inserted into the inside of the linear metal member from the opening side, and the opening side is crimped in this state, and the base of the hair body 62 is held between the metal members. From this state, the cylindrical brush 15 is formed by rolling the metal member into an annular shape so that both ends in the length direction are opposed to each other. Since the base member 61 has a spring property and has a C shape with a part broken as shown in FIG. 2, the base member 61 can be elastically deformed to expand and contract in the radial direction. As shown in FIG. 1, the brush 15 has a diameter-expanded shape that increases in diameter toward the tip side.

  The support body 13 is inserted into the brush 15 from the cylindrical portion 53 side, and at this time, the conical cylindrical portion 54 is fitted to the base member 61. When the fitting further proceeds, the base member 61 is elastically deformed and expanded in accordance with the diameter expansion of the conical cylinder portion 54. When the base member 61 is located at the position of the mounting groove 56 of the support body 13, the elastic deformation is released and the diameter of the base member 61 is reduced to fit into the mounting groove 56. On the other hand, the base member 61 is expanded in diameter by elastic deformation and removed from the mounting groove 56. In this way, the brush 15 can be attached to and detached from the distal end side of the support 13. Here, the brush 15 is attached to the support body 13 so as to extend forward from the support body 13. When the nozzle 21 is swung by the guide of the cylindrical guide surface 57 when passing the fluid supplied to the base end side and ejecting it from the tip end, as shown by a two-dot chain line in FIG. A fluid is ejected toward the hair body 62.

  A plurality of types of brushes 15 are prepared. For example, a cleaning brush 15 using a nylon hair body 62, a static elimination brush 15 using a nylon hair body 62 containing conductive carbon black, and a hair body 62 made of an aromatic polyamide resin. A lens cleaning brush 15 used and a deburring brush 15 using a nylon hair body 62 containing abrasive grains such as alumina or silicon carbide are prepared.

  The slide body 23 includes a cylindrical slide body 71 made of synthetic resin and having low flexibility, and a cylindrical synthetic rubber fitting body 72 fitted into the slide body main body 71. On the base end side of the slide body 71, two annular projecting protrusions 73 and 74 projecting inward in the radial direction are formed at intervals in the axial direction. Thus, an annular support groove 75 that is recessed radially outward is formed therebetween. The fitting body 72 has an annular fitting portion 76 that protrudes radially outward on the outer peripheral side thereof. The fitting body 72 is fitted into the support convex portions 73 and 74 of the slide body main body 71, and the fitting portion 76 is fitted into the support groove 75 at that time. Thereby, the fitting body 72 is integrally attached to the slide body main body 71. Note that an O-ring may be used as the fitting body 72.

  In the slide body 23, the support body 51 of the support body 13 is fitted inside the fitting body 72 from the cylindrical portion 53 side. As a result, the slide body 23 is fixed in position relative to the support body 13 by the frictional force generated between the fitting body 72 and the outer peripheral surface of the support body 13, and a force greater than the frictional force is manually input. Then, it slides with respect to the support body 13. The inner diameter of the slide body 71 on the front end side of the support convex portion 73 is larger than the outer diameter of the base member 61 of the brush 15 in the state of being attached to the attachment groove 56 of the support body 13, and the support body has this outer diameter. It is smaller than a value obtained by adding twice the minimum depth of the thirteen mounting grooves 56. Accordingly, as shown in FIGS. 1 and 3, when the slide member 23 covers the base member 61 of the brush 15 on the outer side in the radial direction, the deformation of the base member 61 in the radial direction is restricted and the slide member 23 is detached from the mounting groove 56. To regulate.

  The slide body 23 is slidable with respect to the support body 13 from a position away from the brush 15 toward the base end side to a position where the brush 15 wraps in the axial direction excluding a part of the tip end side. Here, as shown in FIG. 3, the slide body 23 has its fitting body 72 in contact with the base member 61 of the brush 15 to determine the limit position of the slide toward the tip side. Even when the slide body 23 is at the limit position of the slide toward the tip side, a part of the brush 15 on the tip side protrudes from the slide body 23.

  When the slide body 23 is wrapped in the axial direction with the brush 15 as shown in FIG. 3, the brush 15 is covered radially outside, and to the outside of the covered portion of the hair body 62 in the radial direction of the slide body 23. Regulate the deformation of When the slide body 23 regulates the deformation of the hair bodies 62 radially outward in this way, each hair body 62 comes into contact with the other hair bodies 62 and the movement in the circumferential direction is also regulated. It becomes difficult to deform. That is, as the wrap amount of the slide body 23 increases, the brush 15 is less likely to be deformed and the stiffness becomes stronger.

  Next, the use state of the nozzle unit with brush 10 having the above configuration will be described. The fluid supply means X is connected to the base end side of the connecting member 11. Then, the fluid supplied under pressure from the fluid supply means X passes through the inside of the connecting member 11, the nozzle holding member 12, and the nozzle body 41 and is ejected from the tip of the nozzle body 41 to the outside. At this time, since the nozzle body 41 is formed of a flexible synthetic resin material and the tip end portion is a free end, the nozzle 21 performs a swivel motion so that the free end is exposed. This turning motion is restricted to a constant radial range by the cylindrical guide surface 57 of the support 13, and the nozzle 21 performs a regular turning motion along the cylindrical guide surface 57. In addition, the nozzle 21 has a turning motion stabilized by a balancer 42 provided around the nozzle 21.

  As a result, the fluid is ejected from the tip of the swiveling nozzle 21 in a conical cylinder shape whose diameter is expanded while swirling the ejection position, and collides with the hair body 62 of the brush 15 which is the directing destination. As a result, the fluid partially displaces the brush 15 and continuously moves the displacement position in the circumferential direction. When the brush 15 is applied to the object in this state, the brush 15 automatically rubs the object while ejecting fluid toward the object. Then, the brush 15 separates the removed object from the object, and the fluid excludes the removed object. In this way, dust removal, cleaning, deburring and the like are performed.

  For example, when deburring metal parts, a deburring brush 15 using a nylon bristle body 62 blended with abrasive grains of alumina and silicon carbide is attached to the support 13 and fluid supply means. Compressed air is supplied as a fluid from X. When the burr is small and easy to remove, the amount of wrapping of the slide body 23 with the brush 15 is reduced as shown in FIG. 1, the brush 15 is weak, and the tip of the brush 15 is placed on the object. Contact the deburring area to separate the burr from the object and blow it away with air. If the burr is large and difficult to remove, the wrap amount of the slide body 23 with the brush 15 is increased as shown in FIG. 3, the brush 15 is strong, and the tip of the brush 15 is placed on the object. Contact the deburring area to separate the burr from the object and blow it away with air.

  Here, as the fluid supplied from the fluid supply means X, liquids such as water and cleaning liquid other than gas may be supplied as well as gas other than air. Further, a gas-liquid mixed fluid such as a mixture of water and air or a mixture of cleaning liquid and air may be supplied.

  According to the brush-equipped nozzle unit 10 described above, since the brush 15 is detachably supported by the support body 13, when the brush 15 is replaced, the support body 13 that supports the brush 15 is reused as it is. be able to. Therefore, cost can be reduced. In addition, the cylindrical slide body 23 that is slidably supported on the outer peripheral side of the support body 13 can cover the brush 15 from the outer peripheral side, and the covering amount is variable depending on the slide position. The stiffness of the brush 15 can be strengthened, and the stiffness of the brush 15 can be weakened if the coating amount is reduced. That is, the stiffness of the brush 15 can be adjusted. Therefore, usability can be improved.

  Specifically, if the stiffness is weakened, the brush 15 can be easily deformed, and dust removal, cleaning, deburring, and the like can be performed while suppressing damage to the object. Further, if the stiffness is increased, the deformation of the brush 15 becomes difficult, and dust removal, cleaning, deburring and the like can be performed strongly. In addition, even if the slide body 23 increases the covering amount of the brush 15 and reduces the protruding amount of the brush 15 from the slide body 23, the hair foot of the hair body 62 does not become short. The vibration effect of the brush 15 due to the collision of the fluid is not spoiled. That is, if the length of the brush hair is simply shortened to strengthen the stiffness, vibrations are less likely to occur due to the collision of the fluid from the nozzle 21. However, in the present embodiment, the brush 15 is improved with good stiffness. Can be vibrated.

  In the above embodiment, the case where the support 13 is formed of the support body 51 and the guide member 52 which is a separate member and the cylindrical guide surface 57 is formed on the guide member 52 has been described as an example. However, since it is sufficient that the cylindrical guide surface 57 is provided inside the support body 13, the support body 13 may be formed of one member and the cylindrical guide surface 57 may be formed on the inner peripheral surface thereof.

DESCRIPTION OF SYMBOLS 10 Nozzle unit with brush 13 Support body 15 Brush 21 Nozzle 23 Slide body 56 Mounting groove 57 Cylindrical guide surface 61 Base member 62 Hair body

Claims (1)

A cylindrical support body having a cylindrical guide surface whose diameter is enlarged on the front end side;
A cylindrical brush that is detachably supported on the distal end side of the support and extends forward from the support;
Provided inside the support and made of a flexible tube whose distal end is a free end, allowing the fluid supplied to the proximal end to pass therethrough and pivoting with the guide of the cylindrical guide surface. A nozzle for ejecting fluid from the nozzle toward the brush;
A cylindrical slide body that is slidably supported on the outer peripheral side of the support body,
The nozzle unit with a brush, wherein the slide body can cover the brush from the outer peripheral side, and a covering amount is variable depending on a slide position.

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