JPS629873A - Nozzle tip and nozzle device for sand blast - Google Patents

Abstract

PURPOSE:To enable the injection width of a blast material to be optionally adjusted, by removably fitting a nozzle tip, formed by holding a pair of bar- shaped tips enabling their opening angle to be adjusted between a pair of plate- shaped tips, into the mounting opening part of a holder. CONSTITUTION:A nozzle tip 3, being fitted to an opening part 2 placing a pair of plate-shaped tips 31 along parallel internal surfaces 21 in the mounting opening part 2 of a holder 1, inserts the respective rear ends of the plate-shaped tips 31 and bar-shaped tips 32 to be adapted to a bottom part 21 in the opening part 2. Under this condition, the nozzle tip 3, opening into a fan-shape the paired bar-shaped tips 32 provided between the paired plate-shaped tips 31 to form narrowly the side of an axial hole 13 while widely the jetting side further regulating this opening angle, enables the injection with of a blast material from an injection port 7 to be adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a nozzle device for sandblasting and a nozzle chip used in the nozzle device.

[Conventional technology]

Conventionally, in order to spray abrasive material from a nozzle over a wide area,
A plurality of nozzles that swing the injection nozzle are arranged side by side, or a flat nozzle with an enlarged tip is used.

[Problem to be solved] What makes the nozzle swing is rocking! 1ilIvc is required, making the entire device complicated and large, leading to high costs.

If a plurality of nozzles are arranged side by side, the nozzle head becomes large. In the above two examples of nozzles and the flat nozzle with an enlarged tip, the jetting width cannot be arbitrarily adjusted according to the required cleaning width.

Furthermore, in any of the above cases, if the nozzle wears out, the entire nozzle must be replaced, resulting in a lot of waste. It is an object of the present invention to solve the above problem with a nozzle device configured by a nozzle tip whose width can be changed and the nozzle tip detachably attached to a holder.

The structure of the present invention is such that the holder (1) has a connection part (11) for connecting an abrasive material pressure-feeding hose at the base end, and a shaft hole (13) that communicates with the connection part and opens toward the distal end side. ing.

A nozzle tip attachment opening (2) is formed at the tip of the holder (1) and communicates with the shaft hole (13).

The nozzle tip (3) is a pair of plate-shaped tips (31) (31
), a pair of rod-shaped tips (32) (:112) are opened and folded so that the angle can be adjusted, and is fitted into the mounting opening (2) of the holder (1).

A clamp member (4) for clamping the nozzle tip (3) is provided on the holder (1).

[Action and effect]

The nozzle tip (3) has a rod-shaped tip (32) with a narrow shaft hole (13) IIt+ and a wide fan-shaped opening on the ejection side.
Moreover, the spray width of the abrasive material can be arbitrarily set by changing the opening angle as necessary.

Further, the jet width can be easily changed by simply loosening the clamp on the nozzle tip (3) and changing the opening angle of the rod-shaped tips (32). Unlike conventional methods, the overall size of the device does not need to be increased by arranging a plurality of nozzles or providing a nozzle swinging device.

In addition, in the above nozzle device, the nozzle tip (3), which is the abrasive injection part, wears out faster than the holder (1), but by converting only the nozzle, the holder (1) can be used for a long time. Can be used.

〔Example〕

The holder (1) has a substantially cylindrical shape with a diameter of about 30 nv and a length of about 120 mm, and has a small diameter cylindrical connection part (11) at the base end, and a screw thread (12) on the outer periphery of the connection part (11). ) to which the hose (5) is connected.

The shaft center of the holder (1) has a shaft hole (1) with a circular cross section, one end communicating with the connection part (11) and the other end facing the distal end side of the holder.
3) is opened, and a cylinder (16) made of a wear-resistant metal such as tungsten is fitted and fixed into the shaft hole (13).

The distal end surface of the holder (1) is symmetrically arranged with respect to the axis of the holder (1).
It is formed by two slopes inclined at 5 degrees, and each slope is
A slope (14) and a second slope (15).

The first slope (14) is provided with an opening (2) that is perpendicular to the slope and whose inner surface is parallel to the slope, and the flat bottom (21) of the opening communicates with the axis of the holder. In 2), both sides extend to the holder peripheral surface and open laterally.

The vertical width W of the opening (2) is approximately 171 mm.

The second slope (15) has a screw hole (17) penetrating into the opening (2) at right angles to the slope (15), and a counterbore (18) is formed in the screw hole (17). be done.

A clamp bolt (41) is screwed into the screw hole (17) and serves as a clamp member (84) for fixing the nozzle tip (3).

The nozzle tip (3) is a pair of square plate-shaped tips (31
) (31) with a pair of rod-shaped chips (32) (32) sandwiched between them.

Plate chips (31) (31) and rod chips (32) (3
2) are simply combined in contact with each other, and are not fixed with adhesive or the like, and are a pair of plate-shaped chips (31
) (31), the rod-shaped tips (32) (32) can be freely moved.

Both the plate-shaped tip and the rod-shaped tip are made of wear-resistant metal such as tungsten, and as shown in FIG.
Thickness 1□ is approximately 6.5m+a, total length 1. is about 22 +n
+n.

The square rod-shaped tip (32) has a width and length of 1. is approximately 4111111
．． 1° thickness is 4 ladles! +I +n%The total length of the whole bush is about 23
+on+.

The total height 17 of the nozzle tip (3) is equal to or smaller than the mounting opening (
It is slightly smaller than the opening gap W in 2), and the nozzle tip (
After fitting 3) into the mounting opening (2), no backlash will occur.

Therefore, the nozzle tips (3) are combined, and the plate-like tips (31) (31) are inserted into the mounting opening (2) of the holder (1).
) along the parallel inner surfaces (21) (21) of the opening (
2), plate-shaped tip (31) and rod-shaped tip (32).
), the rear ends of each are placed against the bottom (21) of the opening (2).

(41) screwed onto the holder (1)) (41) (warmly tightened) (41)
) to softly lock the rod-shaped tips (32) (32) between the plate-shaped tips (31) (31).

In this state, the rod-shaped chips (32) (32) are opened narrowly on the back side of the opening and widely fan-shaped on the spouting side, and the chip (3
2) Make the gap (32) communicate with the shaft hole (13). The above work is performed as shown in Figure 10, with slopes (61) (6
The opening angle of the rod-shaped tips (32) (32) can be easily adjusted by placing the rod-shaped tips (32) (32) along the slopes (61) (61) of the dage piece (6) having 1). .

It is sufficient to prepare several types of dage pieces (6) with different angles of slopes (61) (61).

Plate chips (31) (31) and rod chips (32) (3
2) has an injection port (7) with a rectangular cross section with an enlarged tip.
) is formed, and the injection port (7) communicates with an axial hole (13) having a circular cross section in the holder.

The spray width of the abrasive material is determined by the opening angle of the injection port (7), that is, the dramatic opening angle of the rod tip (32) (32), so firmly tighten the nozzle tip (3) with the pole (41). The spray width of the abrasive can be freely adjusted by simply moving the rod-shaped tips (32) (32) between the plate-shaped tips (31) (31).

In addition, the rod-shaped tips (32) (32) and plate-shaped tips can change the inner surface depending on the degree of wear, and
Not only can you replace the four tips (31) (32) at once, but you can also replace just the rod tip (32) or the plate tip (31).
It is economical as only the parts can be replaced.

Figures 5 and 6 show other embodiments of the nozzle tip (3), in which the base ends of the wide rod-shaped tips (32) (32) are connected with pins (32) between the plate-shaped tips (31) (31). 34), the rm is pivotably supported at the base end of the plate-like tip (31) (31) so that it can be opened and closed.

The rod-shaped tips (32) (32) are formed wider and flatter than the aforementioned rod-shaped tips, and have bottle holes (33) (33) at both ends.
), and both ends are formed into arcuate surfaces (35) with the bottle hole (33) as the center of diameter.

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+ Am ffl+1 + 1+ -”tl
1nnt --Plate chip (3
1) It is pivotably supported on (31) so that it can be opened and closed.

In the case of the above nozzle tip (3), the rod-shaped tip (32) (
32) is pivotally supported by the plate-shaped tips (31) (31"), so it is easy to adjust the opening angle of the rod-shaped tips (32) (32), and the proximal end of the pin (34) Because it is formed on the circular arc surface (35) (35) at the center,
Even if the opening angle of the rod-shaped tips (32) (32) is changed, the gap width A on the back side of the open injection port (7) of the tips (32) (32) cannot be changed.

Further, since the plate-shaped tip (31) has a bottle hole (33) at the tip, it can be used with the front and back reversed.

Figures 7, 58, and 59 show the nozzle mounting opening (2)
Fig. 7 shows another embodiment in which the nozzle mounting opening (2) is formed at the tip of the holder (1) at an angle of 45 degrees inward with respect to the axis. This is an example.

FIG. 8 shows a middle embodiment in which a nozzle mounting opening (2) is formed at the tip of the holder (1) at right angles to the axis.

FIG. 9 shows another embodiment in which mounting openings (2) (2) are formed on both sides of the tip of the holder (1) at an angle of 60 degrees outward with respect to the axis.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the plasto nozzle, Figure 2 is a plan view of the same as above, Figure 3 is a cross-sectional view along the line ■-■ in Figure @i, Figure 4 is a perspective view of the assembled nozzle tip, Figure 5 6 is a partially cutaway side view of another embodiment of the nozzle tip, and FIG. 5 is a side view of another embodiment of the nozzle tip.
7, 8, and 9 are front views showing other embodiments of the nozzle tip mounting direction, @10
The figure is a slope view of the gauge. (1)...Holder (2)...Mounting opening (
3)...Nozzle tip (31)...Plate tip (
32)...Rod-shaped chip

Claims (1)

[Claims] [1] Connection part (11) for connecting an abrasive material pressure supply hose at the base end
and a shaft hole (13) communicating with the connecting portion and facing toward the distal end side.
A nozzle tip mounting opening (2) is formed on the distal end side of the holder (1) in communication with the shaft hole (13), and a pair of plate-shaped tips (31) (31) are formed in the holder (1). A nozzle tip (3) consisting of a pair of rod-shaped tips (32) sandwiched between them so that the opening angle can be adjusted is removably fitted into the opening (2), and a clamp member provided on the holder (1). (4) Attach the nozzle tip (3) to the holder (1).
) is fixed in the sandblasting nozzle device. [2] Each rod-shaped tip (32) (32) has a pin (34) at the base end on the shaft hole (13) side, and the plate-shaped tip (31) (31)
A sandblasting nozzle device according to claim 1, which is pivotally supported on the sandblasting nozzle device. [3] The sandblasting nozzle device according to claim 2, wherein the rod-shaped tip (32) has pin holes (33) (33) at both ends into which the pin (34) is fitted. [4] The end surface of the rod-shaped tip (32) is an arcuate surface (35) concentric with the pin hole (33) and having a diameter equal to the width of the tip (32).
A sandblasting nozzle device according to claim 2 or 3, which is formed in. [5] A nozzle tip (3) that is removably attached to the attachment opening (2) of a cylindrical holder (1) having a nozzle tip attachment opening (2) on the distal end side, the nozzle tip (3) having a pair of plate shapes. A pair of rod-shaped chips (32) between the chips (31) (31)
A nozzle tip for sandblasting, characterized in that it is configured by sandwiching (32) so that the opening angle can be adjusted. [6] Each rod-shaped tip (32) (32) has a base end on the shaft hole (13) side with a pivot (34) and a plate-shaped tip (31) (31).
The sandblasting nozzle tip according to claim 5, which is pivotally supported by the sandblasting nozzle tip. [7] The sandblasting nozzle tip according to claim 6, wherein the rod-shaped tip (32) has pin holes (33) (33) at both ends into which the pin (34) is fitted. [8] Both sides of the rod-shaped tip (32) have circular arc surfaces (35) whose diameter is the width of the tip (329) concentrically with the pin hole (33).
A sandblasting nozzle tip according to claim 6 or 7, which is formed in a sandblasting nozzle tip.