JPS629874A - Nozzle tip holder for sand blast - Google Patents

Abstract

PURPOSE:To enable a holder to be used for a long period, by providing a clamping member, which clamps a nozzle tip to be removably fitted to a mounting opening part, in the vicinity of the mounting opening part so as to enable only the nozzle tip to be easily replaced. CONSTITUTION:A holder 1, being equipped in its base end with a connection part 11 for connecting a forced feed hose of a blast material, has an axial hole 13, communicating with said connection part 11 and extending toward the point end side, in the axial center. Said holder 1 provides in its point end side a mounting opening part 2 communicating with the axial hole 13 and having parallel internal surfaces. A nozzle tip 3, being fitted to said opening part 2, is fixed to said part 2 by a clamping bolt 41 of a clamping member 4. When said nozzle tip 3 is worn, the holder removes the nozzle tip 3 from the opening part 2 by loosening the clamping bolt 41 to be replaced with a new nozzle tip.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a nozzle tip holder for a sandblasting device, on which a nozzle tip is removably attached and which forms an injection nozzle in combination with the tip.

[Prior art and its problems]

Since the spray nozzle attached to the holder of the conventional sandblasting device is constructed entirely of ceramic, if the nozzle wears out, it is necessary to replace the entire nozzle, which is uneconomical.

In addition, in order to spray the nozzle abrasive material over a wide range, it is possible to arrange a plurality of spray nozzles Vcg1, to swing the spray nozzle device, or to use a flat nozzle with an enlarged tip. There is.

/Zuru v To swing the device, a swinging device is required, and the entire device becomes large and has a plurality of units, resulting in high cost.

Further, in the case where a plurality of nozzle devices are arranged side by side, there is a problem that the nozzle head V portion becomes large. Moreover, with the nozzle devices of the above two examples and the flat nozzle with an enlarged tip, it was not possible to arbitrarily adjust the spray width according to the required cleaning width.

[Means for solving problems]

The present invention is a holder to which a nozzle tip for forming a wide-angle injection port can be removably attached, and the above-mentioned problem is solved by providing an attachment opening on the tip side of the holder into which a 7F nil tip is fitted. purpose.

The holder of the present invention has a connecting part (11) for connecting an abrasive material pressure-feeding hose at the base end, and has an axial hole (13) in the axial center communicating with the connecting part and facing toward the distal end.

A mounting opening (2) with a parallel inner surface and communicating with the shaft hole (13) is provided on the tip side of the holder, and the holder (1)
is provided with a clamping member (4) for clamping the nozzle tip (3) to be removably fitted into the mounting opening (2).

[Action and effect]

The nozzle tip (3) is fitted into the opening (2) of the holder (1) and fixed by the clamp member (4).

If the nozzle tip (3) wears out, the clamp member (4)
By loosening the nozzle tip (3), you can easily replace the nozzle tip (3), and the holder (1) can be used for a long time.

In addition, by forming an injection port with an enlarged tip on the nozzle tip (3) itself, the abrasive material can be sprayed over a wide range, and the device does not become larger as in the past.

〔Example〕

The holder (1) has a substantially cylindrical shape with a diameter of about 30 mm and a length of about 120 mm, and has a small diameter cylindrical connection part (11) at the base end, and a threaded surface (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 tip surfaces of the holder (1) are arranged symmetrically to each other with respect to the axis.
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 17 mm.

° The #S2 slope (15) has a screw hole (17) penetrating into the opening (2) at right angles to the slope (15), and a counterbore (18) is provided in the screw hole (17). It is formed.

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 rectangular plate-shaped tips (31
031) with a pair of rod-shaped chips (32) (32) sandwiched therebetween.

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
The rod-shaped chips (32) (32) can be freely moved between the two (H31).

Both the plate-shaped tip and the rod-shaped tip are made of wear-resistant metal such as tungsten, and as shown in FIG. 3, the plate-shaped tip (31) has a width length 1 of about 15 InI and a thickness of 11 degrees!
2 is approximately 6.511 II@, and the total length I is approximately 22 fflu.

The square bar-shaped chip (32) has a width 14 of approximately 4 m+a, a thickness 15 of approximately 41 mm, and a total length 16 of approximately 23 mm.

Total height of nozzle tip (3)! 7 is the mounting opening (
It is slightly smaller than the opening rn'+gap W of 2), and no looseness occurs when the nozzle tip (3) is fitted into the mounting opening (2).

However, the nozzle tips (3) are combined and the plate 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).

Warmly tighten the bolt (41) screwed into the holder (1) and insert the tip of the bolt (41) into the plate tip (31) (31).
) 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 side rod-shaped chips (3
2) Make the gap (32) communicate with the shaft hole (13). The above work! @ As shown in Figure 10, there are slopes (6I) (
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 gauge piece (6) having the gauge piece (61). .

As for the gauge piece (6), it is sufficient to prepare several M1 types of gauge pieces with slopes (61) and (61) having different angles.

Plate-shaped chips (31) (31) and rod-shaped chips (32) (
32) is formed with an injection port (7) having a rectangular cross section and an enlarged tip, and the injection port (7) communicates with a shaft 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 fan-shaped opening angle of the rod tip (32) (32), so before firmly tightening the nozzle tip (3) with the bolt (41). , the rod-shaped chips (32) (32) are replaced with the plate-shaped chips (
31) The spray width of the abrasive material can be freely adjusted by simply moving between (31) and (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 thousand knobs (31) (32) at once, but you can also replace just the rod-shaped tip (32) or the plate-shaped tip (31).
It is economical as only the parts can be replaced.

Figures 5 and 6 show an embodiment of the pond of the nozzle tip (3), and the proximal ends of the wide rod-shaped tips (32) (32) are placed between the plate-shaped tips (31) (31) with pins ( 34) is pivotably supported at the base end of the plate-shaped tips (31) (31) so as to be openable and closable.

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.

Both frame-shaped tips (32) (32) have a bottle hole (33) on the proximal end side.
) with the pin (34) passed through the plate chip (31) (31
) is pivoted 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 tip (32) (32) is changed, the depth of the tip (32) (32) ml chisel 41 mouth 7)
1no17111'1ffl19! iA There is a characteristic that there is no change.

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

Figure 7, fjSa figure, and Figure 9 are nozzle mounting openings (2)
Fig. 7 shows another embodiment in which the nozzle mounting opening (2) is formed at the tip of the holder (1) by carefully tilting it inward at 45 degrees. It is.

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

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 drawings]

Figure 1 is a sectional view of the Plast nozzle, PIS 2 is a plan view of the same as above, Figure 3 is a sectional view taken along line ■-■ in Figure 1, Figure 4 is a perspective view of the assembled nozzle tip, and Figure 5 is A partially cutaway side view of another embodiment of the nozzle tip, FIG.
7, 8, and 9 are front views showing other embodiments of the nozzle chip mounting direction, and FIG. 10 is a slanted view of the dage. (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
, the shaft center has a shaft hole (13) that communicates with the connecting part and faces toward the distal end, and the distal end has a mounting opening (2) that communicates with the shaft hole (13) and has a parallel inner surface. A nozzle tip holder for sandblasting, which is provided with a clamp member (4) near the opening for clamping a nozzle tip (3) to be removably fitted into the mounting opening (2). [2] The sandblasting nozzle tip holder according to claim 1, wherein both sides of the mounting opening (2) extend to the outer peripheral surface of the holder (1) and are open. [3] The clamp member (4) is a bolt (41) screwed together so that its tip can protrude into the mounting opening.
Nozzle tip holder for sandblasting as described in section.