JPH0655451A - Injection machining device - Google Patents

Abstract

PURPOSE:To modify an injection machining device in the following way that the device can be regulated so as to be controlled in such a way that processing efficiency remains at the maximum value at all times with respect to change in machining condition. CONSTITUTION:A jet nozzle 3 injecting pressurized fluid fed by a compressor 6 is movably provided in a main body 1 so as to be inserted therein, a hopper 9 feeding grids 10 to be mixed in a jet injection section, and an injection nozzle 2 injecting the mixture of jet fluid and the grids 10 are provided, and a space between the fluid jet 3 and the injection nozzle 2 is controlled to be changed by a rack pinion 5 provided for the jet nozzle 3. In addition, an inverter power supply 8 is provided for controlling the compressor 6, so that the pressure and a flow rate of the jet fluid is so constituted as to be thereby controlled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injection processing device for shot blasting, sand blasting and the like.

[0002]

2. Description of the Related Art Jet processing involves jetting a pressurized fluid.
This is a processing method in which a grid is mixed with this fluid flow and is jetted from a nozzle to collide with the work piece to scrape or distort the work surface.

The most important thing in this jet processing is how efficiently a pressurized fluid is jetted into the atmosphere from a nozzle to form solid particles such as a grid that are injected in the process of forming a jet stream. The point is to accelerate and jet. For this reason, conventionally, efforts have been made to empirically design nozzle shapes, hole diameters, positional relationships between nozzles, etc., but the processing efficiency has not always been maximized.

[0004]

SUMMARY OF THE INVENTION The present invention improves on this point and enables adjustment control so that machining efficiency is always maximized.

[0005]

Jet processing comprising a jet for jetting a pressurized fluid, a device for supplying a grid for mixing to the jet jet portion, and a nozzle for jetting a mixture of the jet fluid and the grid. It is characterized in that a means for changing and controlling a distance between the fluid jet and the injection nozzle is provided in the apparatus.

Further, an inverter is provided for controlling the pressure and flow rate of the jet fluid.

[0007]

According to the present invention, since the distance between the fluid jet and the injection nozzle can be changed and controlled as described above, the adjustment of the distance between the fluid jet and the injection nozzle can always be controlled to the optimum state, and the fluid used Depending on the type, pressure, grain size of the grid, specific gravity, etc., it can be optimally adjusted to process with maximum processing efficiency.

Further, the pressure flow rate of the jet fluid is also designed to control the compressor by the inverter, so that it can be always adjusted to the optimum condition and the processing efficiency can be improved.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment of the drawings. In FIG. 1, reference numeral 1 is an injection gun main body, 2 is an injection nozzle which is connected to and fixed to the main body, and is formed into a predetermined hole diameter by being tapered. Reference numeral 3 denotes a jet nozzle for ejecting a pressurized gas, the tip of which is inserted into the main body 1 so as to face the jet nozzle 2. Moreover, the jet nozzle 3 is supported by the main body 1 with the bearing 4 and is vertically moved by the rack and pinion 5 so that the distance between the jet nozzle 3 and the opposing jet nozzle 2 can be arbitrarily changed and controlled.
Reference numeral 6 denotes a compressor, which supplies pressurized fluid to the jet nozzle 3 through a tube 7, and the rotation speed of the compressor 6 can be arbitrarily controlled by an inverter power supply 8. Reference numeral 9 denotes a hopper for supplying the grid 10, which communicates with the inside of the main body 1 and can supply a required amount of the grid 10 to the jet ejection portion.

The pressurized fluid supplied from the compressor 6 is jetted from the jet nozzle 3 into the main body and jetted to the outer tip while the opposing jet nozzle 2 is narrowed to a predetermined diameter. While mixing the grid 10 supplied to the surroundings, the mixing grid 10 is accelerated and injected. Various materials such as silica sand, gold sand, zircon sand, molten alumina, steel grid, glass peas, steel shot, synthetic resin powder, and the like are used for the utilization grid 10, and jetting is performed depending on the particle size and specific gravity of these materials. The conditions are different, and the conditions change depending on the type and pressure of the fluid used, and accordingly the gap between the jet 3 and the injection nozzle 2 needs to be adjusted in order to always maintain the optimum state. Therefore, the jet nozzle 3 is vertically movably inserted into the main body 1, and the optimum position control can be performed by controlling the rack and pinion 5. By adjusting the gap, the injection amount of the grid 10 is controlled optimally, and the processing efficiency can be controlled to the maximum.

Further, the rotation speed of both the compressor and the inverter can be freely controlled by the power source 8 and the supply flow withstand voltage can be controlled, so that optimum condition control of the injection speed can be performed.

FIG. 2 is a graph showing the best value of the pressure of the jetted fluid and the amount of grid when the # 40 grid is jetted from the nozzles of 8 mmφ and 6 mmφ, and the fluid pressure is controlled according to this graph, and the jet 3 and the jet 3 are jetted. By adjusting the gap between the nozzles, processing can be performed with the best processing efficiency.

[0013]

As described above, according to the present invention, since the distance between the fluid jet and the injection nozzle can be changed and controlled,
The spacing between the fluid jet and the injection nozzle can be controlled constantly in a re-casting body, and optimally adjusted in accordance with the type of fluid used, the pressure, the grain size of the grid, the specific gravity, etc. to achieve maximum machining efficiency. be able to.

Further, the pressure and flow rate of the jet fluid are also controlled by the inverter to control the compressor, so that it is possible to always adjust to the optimum conditions, and it is possible to improve the processing efficiency.

[Brief description of drawings]

FIG. 1 is a structural diagram of an embodiment of the present invention.

FIG. 2 is an injection characteristic graph diagram.

[Explanation of symbols] 1 main body 2 injection nozzle 3 jet nozzle 5 rack and pinion 6 compressor 8 inverter power supply 9 hopper 10 grid

Claims (2)

[Claims] 1. An injection processing apparatus comprising a jet for ejecting a pressurized fluid, an apparatus for supplying a grid to be mixed with the jet ejection portion, and a nozzle for ejecting a mixture of the jet fluid and a grid. An injection processing apparatus comprising means for changing and controlling the distance between the fluid jet and the injection nozzle. 2. The injection processing apparatus according to claim 1, further comprising an inverter for controlling the pressure and flow rate of the jet fluid.