JP2000254864A - Support device for air blast nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform fine adjustment of a blast nozzle and to minutely regulate a distance from a blast nozzle tip to a product surface. SOLUTION: This support device is arranged to penetrate an inclination frame body 11 provided with a nozzle moving mechanism to horizontally movably penetrate and vertically rotatably support a blast nozzle 12 relative to a vertical rotation trunnion 3 and consisting of a rotary horizontal thread shaft 19 and a moving nut 20. The inclination frame body 11 is threadedly engaged with a vertical nut cylinder and is rotatably coupled to the upper end of a rotary vertical screw shaft 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air blast nozzle support device for blasting or peening the surface of a product by spraying a blast material with compressed air.

[0002]

2. Description of the Related Art Conventionally, when blasting or peening the surface of a product by air blasting, if the product to be processed changes, the projection direction of the blast material must be changed accordingly. The blast processing is efficiently performed by changing the support angle of the blast nozzle by using a blast nozzle support device known in, for example, US Pat.

[0003]

The blast nozzle supporting device as described above can roughly change the jetting direction of the blast material, but it is difficult to finely adjust the angle and the size of the product is small. When there is a great difference between the two, the distance between the tip of the blast nozzle and the product changes greatly, and there has been a problem that the processing cannot be performed under the optimum blasting conditions. The present invention has been made in view of the above problems, and provides an air blast nozzle support device capable of finely adjusting the angle of a blast nozzle and finely adjusting the distance from the tip of the blast nozzle to the product surface. Aim.

[0004]

In order to achieve the above object, an air blast nozzle supporting apparatus according to the present invention is provided with a nozzle insertion opening on a side wall constituting a blast chamber and corresponding to the nozzle insertion opening on the outside of the side wall. A vertical rotating trunnion in which the rotating body is rotatable in the vertical direction and has a through hole in the horizontal direction is provided at a position where the vertical nut trunnion is tilted toward the side wall direction via a support frame below the vertical rotating trunnion. A tilting frame body is provided above the support frame so as to allow the blast nozzle to reciprocate horizontally in the side wall direction and penetrate the blast nozzle, and the front end side of the blast nozzle is positioned at the vertical rotation trunnion and the nozzle insertion opening. Through the blast chamber and into the tilting frame,
It has a nozzle moving mechanism in which a moving nut that moves forward and backward with the rotation of the rotating horizontal screw shaft and the blast nozzle are connected via a connecting body, and a lower part of the tilting frame corresponding to the vertical nut cylinder. A rotary cylinder having a through-hole penetrating in the vertical direction is mounted so as to be rotatable up and down, and a vertical screw shaft is screwed through the vertical nut cylinder, and a tip end of the vertical screw shaft is attached to the rotary cylinder. It is characterized by being rotatably inserted and locked.

[0005]

Embodiments of the present invention will be described below in detail with reference to the drawings. First, in FIGS. 1 and 2, a nozzle insertion opening 2 is provided in a side wall 1 constituting a blast chamber, and a vertical rotation trunnion 3 is attached to a position corresponding to the nozzle insertion opening 2 outside the side wall 1. As shown in FIG. 2, the vertical rotation trunnion 3 includes a rotating body 4 that is rotatable vertically and has a through hole in the horizontal direction.

At a position below the vertical rotary trunnion 3 on the side wall 1, a support frame 6 is screw-fastened via a mounting frame 5 so that the height can be adjusted. The support frame 6 is located behind the vertical rotary trunnion 3. It is located below. As shown in FIG. 3, a vertical nut tube 8 is supported on the vertical surface behind the support frame 6 via a bearing 7 so as to be vertically rotatable (tilt left and right). A rotary vertical screw shaft 10 to which a hand handle 9 is attached is screwed through. Further, at an upper position extending from the support frame 6 to the vertical nut cylinder 8,
A tilt frame 11 having a nozzle moving mechanism is arranged. The rotating body 4 of the vertical rotating trunnion 3 includes frames 11A, 1A attached to a tilting frame 11 as shown in FIG.
It is rotatably supported at 1A.

A blast nozzle 12 penetrates the tilting frame 11 from side to side, and a tip end of the blast nozzle 12 penetrates through a through hole of the rotating body 4 of the vertical rotating trunnion 3 so as to be slidable. Further, the tip of the nozzle penetrates through the nozzle insertion opening 2 and faces the blast chamber. O-ring seals 13 are fitted into the through holes of the rotating body 4 to maintain airtightness with the blast nozzle 12. In addition, the vertical nut tube 8 at the lower portion of the tilting frame 11
3, a rotary cylinder 15 is provided via a bearing 14 so as to be rotatable in the same direction as the rotation of the vertical nut cylinder 8, as shown in FIG. , The tip of the rotary vertical screw shaft 10 is rotatably inserted and locked. That is, the tilting frame 11 is moved up and down together with the rotary vertical screw shaft 10 by rotating the hand handle 9, and tilted about the rotating body 4 of the vertical rotary trunnion 3.

Next, a nozzle moving mechanism provided in the tilting frame 11 will be described. A horizontal guide rail 16 is laid on the inner bottom of the tilting frame 11 in parallel with the blast nozzle 12.
The movable body 17 is engaged with the movable body 17 so as to be able to move horizontally, and the movable body 17 is connected and fixed to an intermediate portion of the blast nozzle 12 via a mounting body 18. Further tilting frame 1
At the upper position of the blast nozzle 12 in 1, there is provided a rotating horizontal screw shaft 19 which is parallel and rotatable along the blast nozzle 12, and the rotating horizontal screw shaft 19 has two moving nuts 20, 20. Are screwed at appropriate intervals, and the moving nuts 20, 20 are fixed to the upper portion of the blast nozzle 12 via connecting bodies 21, 21 in an uneven manner.

A first gear 22 is fixed at a position on the right side of the rotating horizontal screw shaft 19, and a second gear 23 mounted on a rotating shaft rotatably supported at an upper right position of the tilting frame 11 meshes with the first gear 22. The second gear 23 is rotated by a rotating operation of a hand handle 24 connected to a rotating shaft. That is, when the hand handle 24 is rotated, the rotating horizontal screw shaft 19 is rotated via the second and first gears 23 and 22, and the moving nut 20 and
The blast nozzle 12 is configured to be advanced or retracted at the same time so as to advance or retract the blast nozzle 12 via the connecting bodies 21 and 21.

Reference numeral 25 in the figure denotes a stopper piece attached to the lower portion of the tilting frame 11, which faces the support frame 6 and limits the tilt of the tilting frame 11 to a certain range by means of screw stoppers 26 and 27. It is configured as follows. The base end of the blast nozzle 12 is connected to a transport hose 29 for projectile material through a joint 28.

With this configuration, when the shape and size of the product to be processed in the blast chamber changes, the product is set at a predetermined location in the blast chamber, so that the blasting position and the position of the blast nozzle 12 are changed. The distance between the tip and the product surface becomes different. For this reason, the tilting frame 11 and the blast nozzle 11 are firstly rotated by rotating the hand handle 9 and moving the rotary vertical screw shaft 10 up and down from the vertical nut cylinder 8 while checking the blast nozzle 12 and the blast position of the product from a viewing window (not shown). The tilt of the blast nozzle 12 is adjusted about the rotating body 4 of the vertical rotating trunnion 3 so that the tip of the blast nozzle 12 corresponds to the blasting position of the product.

Next, by rotating the hand handle 24, the second
By rotating the rotating horizontal screw shaft 19 via the gears 23 and 22,
The blast nozzle 12 is moved forward or backward through the moving nuts 20, 20 and the connecting bodies 21, 21. At this time, since the blast nozzle 12 is supported by the moving body 17 engaged with the horizontal guide rail 16 via the mounting body 18, the uneven fitting between the connecting bodies 21, 21 and the outer periphery of the blast nozzle 12 is released. Never. Therefore blast nozzle 1
The distance between the tip of 2 and the product surface is the product shape and size,
Alternatively, both the displacement due to the tilting of the blast nozzle 12 are finely adjusted to the optimum condition. After adjusting the inclination of the blast nozzle 12 and the distance to the product as described above, blast processing is started. In the above-described embodiment, the rotation of the rotary vertical screw shaft 10 and the horizontal screw shaft 19 is performed by the hand handles 9 and 24. However, the rotation may be performed by a motor.

[0013]

As is apparent from the above description, the present invention allows a blast nozzle to penetrate a vertically rotating trunnion so as to be able to move laterally and to be vertically rotatably supported. A configuration in which a tilting frame provided with a nozzle moving mechanism constituted by a moving nut is penetrated and arranged, and the tilting frame is rotatably connected to an upper end of a rotary vertical screw shaft threaded through a vertical nut cylinder. Because
The tip of the blast nozzle can be finely adjusted for tilting and distance according to the product set in the blast chamber, and there is an effect that blasting or peening can be performed under optimum conditions for each product.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention.

FIG. 2 is a view taken in the direction of arrows AA in FIG.

FIG. 3 is a view taken in the direction of arrows BB in FIG. 1;

[Explanation of symbols]

 Reference Signs List 3 vertical rotation trunnion 8 vertical nut cylinder 9 24 hand handle 10 rotating vertical screw shaft 11 tilting frame body 12 blast nozzle 15 rotating cylindrical body rotating horizontal screw shaft moving nut 21 coupling body

Claims (4)

[Claims] 1. A nozzle insertion opening 2 is provided in a side wall 1 constituting a blast chamber, and a rotating body 4 is rotatable in a vertical direction at a position corresponding to the nozzle insertion opening 2 on the outside of the side wall 1 and in a horizontal direction. A vertical rotation trunnion 3 having a through hole is provided, and a support frame 6 is provided below and below the vertical rotation trunnion 3.
The vertical nut cylinder 8 is provided so as to be tiltable in the direction of the side wall 1 via a support, and a tilting frame 11 is provided above the support frame 6 so that the blast nozzle 12 can be horizontally reciprocated in the direction of the side wall 1 and penetrates. And the front end side of the blast nozzle 12 is connected to the vertical rotation trunnion 3 and the nozzle insertion opening 2.
To move the nut and the blast nozzle 12 in the tilting frame body 11 through the connecting body 21 in the tilting frame 11 with the moving nut 20 moving forward and backward with the rotation of the rotating horizontal screw shaft 19. A rotary cylinder body 15 having a nozzle moving mechanism and having a through hole vertically penetrating in a lower portion of the tilting frame body 11 corresponding to the vertical nut cylinder 8 so as to be vertically rotatable. 8. A support device for an air blast nozzle, characterized in that a rotary vertical screw shaft 10 is threaded through 8 and a tip end of the rotary vertical screw shaft 10 is rotatably inserted into and locked to the rotary cylinder 15. 2. A blast nozzle 12 in the tilting frame 11
The support device for an air blast nozzle according to claim 1, wherein the supporting member is slidably supported on a horizontal guide rail via a moving body and a mounting body. 3. The air blast according to claim 1, wherein the rotation of the rotary vertical screw shaft and the rotation of the rotary horizontal screw shaft are performed by hand handles. Nozzle support device. 4. A moving nut 20 and a connecting body 21 which are screwed to said rotating horizontal screw shaft 19 are provided at two intervals, respectively. Air blast nozzle support device.