KR200432097Y1 - Shot Blast Machine - Google Patents

Abstract

The present invention relates to a processing apparatus of a blast machine for projecting holes or grooves at right angles to a workpiece such as glass, ceramic, graphite, etc. by projecting a fine powder type projection material through a nozzle at high speed. By improving the installation structure and operation state of the nozzle, even if the injection pressure of the projection material sprayed to the center and the edge side of the nozzle is different, it is possible to process holes or grooves in the workpiece at right angles.

To this end, a shot for processing a hole or a groove by the projection material 5 sprayed through the nozzle 6 by supplying the workpiece 3 with the portion not to be processed 20 to the inside of the chamber 4. In the blast machine, a housing (21) provided inside the chamber, a drive means (22) such as a motor built into the housing and driven according to the application of power, and a rotating plate fixed to the shaft of the drive means. (23), a drive shaft (24) fixedly eccentric to the rotating plate, and one end is fixed to the drive shaft and the other end is fixed to the driven shaft (26) to swing the driven shaft radially in accordance with the drive of the drive means The means 25 and a plurality of nozzles fixed to the driven shaft and the projection material are injected are fixed, and are composed of a circular nozzle mounting plate 27 drawing a cone-shaped trajectory by the swinging motion of the driven shaft.

 Shot blast machine, glass, hole or grooving, nozzle, rocking motion

Description

Shot blast machine processing equipment

1 is a perspective view showing a conventional short blast machine

2 is a longitudinal cross-sectional view of FIG.

3 is a front view of a state in which the nozzle is installed in the chamber

Figure 4 is a process chart showing a process of forming a groove in the glass to be processed by a conventional short blast machine

5 is a longitudinal sectional view of the short blast machine equipped with the device of the present invention;

6 is a plan view of FIG.

7 is a side view of FIG. 5

8a and 8b is a front view for explaining the operating state of the present invention

9 is a process chart showing a process of forming a groove in the glass to be processed by the device of the present invention

Explanation of symbols for the main parts of the drawings

2 ; Conveyor Unit 4: Chamber

6: nozzle 21: housing

22: drive means 23: rotating plate

24: drive shaft 25: swinging means

26: driven shaft 27: nozzle mounting plate

28: support block

The present invention relates to a blast machine for processing a workpiece, such as glass, ceramics, graphite, etc. by projecting a fine powder projection material at high speed through a nozzle, more specifically a hole or groove of a certain depth in the workpiece It relates to a processing apparatus of a shot blast machine that can be processed in a square shape.

In general, the glass processing technology ranges from the general product to the high-precision display, the small camera lens, and the whole industry. The precision of processing requires nano-nm accuracy as the high-tech industry progresses.

In particular, glass used in streamlined optical glass products, mobile phones or micro-camera lenses require more precise precision.

Due to the characteristics of glass, light transmission and breakable properties limit the use of diamond cutters or lasers to make ultra-small cuts. Most streamlined optical glass products, or lenses used in mobile phones or micro cameras, are replaced by plastic products. There is a situation.

Plastics have excellent processability due to their soft elasticity, but they are easily scratched on the surface due to the surrounding environment, transparency decreases with temperature change, and discolor over time. There is a limit to obtaining high quality pictures and videos when used with.

At present, when manufacturing a workpiece glass to be streamlined or small in order to produce a mobile phone or a compact camera lens, an operator cuts the workpiece, which is the original glass, into a desired size by a diamond cutter, and then cuts the upper surface of the workpiece. After marking (marking) the desired shape, the worker directly polishes the workpiece to produce the desired product.

This processing method has a critical defect that damages the health of workers due to the scattering of dust (glass powder) as well as the production cost is increased because the finished product is extremely small, there is a limit to mass production.

Therefore, in view of the above problems, a desired groove is formed in the glass, which is a workpiece, by a corrosion method by fluorine (F).

In this corrosion method, masking and dipping operations are sequentially performed on the surface of the glass to be processed, and the masking portion is removed at the portion where the groove is to be formed, and the masking remains at the portion where the groove is not formed.

In this state, when the fluorine is sprayed on the workpiece through the nozzle, the unmasked portion is processed to the same depth. After this process, the water is washed to remove the masking to obtain a finished product.

However, this processing method has the advantage that the desired hole or groove can be processed in right angles on the glass to be processed, but the use of fluorine can cause a fatal danger to the worker, and also precisely shape the workpiece to the desired shape. There is a disadvantage that can not be cut.

In addition, there was a problem of water pollution due to the use of fluorine, as well as a problem in that the production cost is increased due to a decrease in productivity due to different processes.

Therefore, in developed countries that possess the technology for glass processing as workpieces, projection materials are sprayed through nozzles of shot blast machines to form holes or grooves in glass as workpieces.

A shot blast machine is a machine which processes a workpiece by projecting a workpiece of metal or nonmetal material, such as shot or grit, onto the workpiece at high speed.

1 is a perspective view illustrating a conventional short blast machine, FIG. 2 is a longitudinal cross-sectional view of FIG. 1, and FIG. 3 is a front view of a state in which a nozzle is installed in a chamber. The main body 1 and the workpiece 3 are installed in the main body. ) Is conveyed to the conveyor unit (2), the chamber (4) is installed to be sealed to the intermediate portion of the conveyor unit to process the workpiece, and the projection material (5) ) A plurality of nozzles (6) for high-pressure injection to the workpiece side, a clean room (7) installed on one side of the chamber to remove dust from the workpiece to be pore, and is installed on top of the clean room Compressed air injection unit 8 for spraying compressed air to the workpiece side to remove the projection material and dust, and a screw in the opposite direction relative to the center of the chamber (4) is installed in the lower portion of the conveyor unit And a screw conveyor unit 10 for processing the workpiece and collecting the projected material and dust to the hopper 9 side, and a cyclone connected to the hopper and the first connecting pipe 11 to separate the projected material and dust ( 12) and a projection material storage tank 13 installed at the lower portion of the cyclone to contain the projection material separated from the dust so as to be re-injected into the nozzle through the projection material supply pipe (not shown), and the cyclone and the Two dust collectors 16 connected to the connection pipes 14 to generate suction power according to the operation of the turbo fan 15, and a plurality of dust collectors are installed inside the dust collectors to remove fine dust and thus discharge tubes (not shown). A bag filter 17 for discharging only clean air, a dust recovery box 18 containing dust separated by the bag filter, and one side of the chamber to control a series of driving. Control And a roller 19.

At this time, the conveyor unit 2 on which the workpiece 3 is placed passes through the inlet and outlet of the chamber 4 and the outlet of the clean room 7 so that the rubber plate and the inside of the chamber 4 are sealed. The same shielding plate (not shown) is provided.

Therefore, in order to process the holes or the grooves 3a, as shown in Fig. 4, the surface of the workpiece 3 is masked 20, and then the workpiece is loaded onto the conveyor unit 2 so that the conveyor unit 2 ) Moves along a predetermined trajectory, and thus the workpiece 3 placed on the conveyor unit is transferred into the chamber 4. At this time, the plurality of nozzles 6 installed in the chamber 4 may be provided with a projection material ( 5) is continuously sprayed so that the workpiece 3 hits a portion where the workpiece 3 is not masked 20 in the process of passing the workpiece 3 through the chamber 4 to form the groove 3a.

After forming the hole or the groove 3a of a desired shape by spraying the projection material 5 through the nozzle 6 in the workpiece 3 by the above-mentioned operation, the processed workpiece 3 is cleaned in the room. Since it is conveyed to (7), the projected material and dust are removed by the compressed air injection unit 8 and then discharged from the clean room, so the unloaded workpiece from the conveyor unit 2 is manually unloaded by the operator. Alternatively, the workpiece is automatically unloaded by the automatic unloading device.

The projection material 5 injected through the dust and the nozzle 6 generated in the process of processing the workpiece 3 by the above-described process is free fall to the hopper 9 located in the lower portion of the chamber 4 or By the screw conveyor unit 10 is fixed to the opposite side of the screw (not shown) to the hopper (9) side, the recovered projection material and dust is applied to the suction force of the drive of the turbo fan 15 The projection material 5, which is conveyed to the inside of the cyclone 12 by the first connecting pipe 11 and has a high specific gravity, is freely dropped downward by the principle of cyclone and recovered to the projection material storage tank 13 side. And the low specific gravity dust is forcibly conveyed to the dust collector 16 through the second connecting pipe 14 and then removed by the bag filter 17 to be contained in the dust recovery box 18. It is discharged to the outside through the discharge tube.

However, the conventional short blast machine having such a structure has a difference in the injection pressure of the projection material sprayed through the nozzle in the process of being processed by the projection material sprayed from the nozzle installed by transporting the workpiece to the inside of the chamber and fixed to the conveyor unit Has a fatal defect that prevents the hole or groove from being processed at right angles.

That is, although the injection pressure of the projection material injected through the nozzle is large, the injection pressure of the projection material injected to the edge side of the nozzle falls, so that the grooves formed in the workpiece do not maintain a right angle, and thus the edges of FIG. As shown in the figure, a rounded shape was formed, and thus, the assembly of the finished product was not possible, and thus a problem that must be post-processed occurred.

The present invention has been made to solve such a conventional problem, by improving the installation structure and operation state of the nozzle to which the projection material is injected, even if the injection pressure of the projection material is injected to the center and the edge side of the nozzle is different in the hole or Its purpose is to allow grooves to be machined in a vertical (vertical) state.

According to an aspect of the present invention for achieving the above object, in the shot blast machine for processing the hole or groove by the projection material sprayed through the nozzle by supplying the workpiece to be processed to the inside of the chamber masked portion And a housing installed in the chamber, a driving means such as a motor embedded in the housing and driven according to the application of power, a rotating plate fixed to the shaft of the driving means, a driving shaft eccentrically fixed to the rotating plate, One end is fixed to the drive shaft and the other end is fixed to the driven shaft to swing the driven shaft radially in accordance with the driving means, and a plurality of nozzles fixed to the driven shaft and the projection material is injected is fixed Short bra characterized in that it consists of a circular nozzle mounting plate drawing a conical trajectory by coaxial oscillation motion A processing apparatus for a steam machine is provided.

Hereinafter, with reference to Figures 5 to 9 showing the present invention as an embodiment in more detail as follows.

5 is a longitudinal sectional view of the short blast machine equipped with the device of the present invention, Figure 6 is a plan view of Figure 5 and Figure 7 is a side view of Figure 5, the same as the configuration of the conventional short blast machine of the present invention Parts are omitted and the same reference numerals will be given.

According to the present invention, a housing 21 is installed inside a chamber 4 in which a workpiece 3 is processed, and a driving means 22 such as a motor for driving according to the application of power is fixed to the housing. The rotating plate 23 is fixed to the shaft of the drive means.

The driving shaft 24 is eccentrically fixed to the rotating plate rotating according to the driving of the driving means 22, and the swinging means 25 such as a link bowl RBI is fixed to the other end of the driving shaft.

And the other end of the swing means 25 is fixed to the driven shaft 26 that is radially shaken in accordance with the drive of the drive means 22, the circular nozzle mounting plate 27 is fixed to the driven shaft, the nozzle mounting plate A plurality of nozzles 6 (about 6 when the diameter of the nozzle mounting plate is 400-600 mm) to which the projection material 5 is injected are fixed to the peripheral surface of the nozzle 6.

Therefore, as the rotating plate 23 rotates by driving the driving means 22 such as a motor, the nozzle mounting plate 27 fixed to the driven shaft 26 radially shakes the projection material through the nozzles 6. 5) is sprayed.

At this time, a neck portion 26a having a large outer diameter is formed on the driven shaft 26, and a support block 28 having a lower neck than the driven shaft is fixed to the inside of the housing 21. The support block is adapted to support the neck portion 26a.

This causes the support block 28 for supporting the driven shaft 26 to wear out earlier than the driven shaft as the driven shaft 26 on which the nozzle mounting plate 27 is fixed is oscillated by the swinging means 25. This is to extend the life of the expensive driven shaft 26.

Referring to the operation of the present invention configured as described above are as follows.

First, as shown in FIG. 9, in order to process the hole or groove 3a in the workpiece 3, the surface of the workpiece 3 is masked 20, and then the controller 19 is operated to apply power. Loading the workpiece 3 onto the conveyor unit 2 causes the conveyor unit 2 to move along a predetermined trajectory so that the workpiece 3 placed on the conveyor unit is transferred into the chamber 4. The above process is the same as the conventional one.

The conveying speed of the conveyor unit 2 on which the workpiece 3 is placed can be more effectively performed by appropriately adjusting the controller 19 according to the processing conditions of the workpiece 3.

At this time, the nozzle mounting plate 27 provided inside the chamber 4 is not rotated about the driven shaft 26 by the driving means 22 and the rocking means 25 such as a motor, but the radially rocking motion. The projection material 5 is sprayed through the several nozzle 6 mounted in the circumferential surface of the said nozzle mounting plate 27 in the state which makes the following.

That is, the movement of the nozzle mounting plate 27 on which the nozzle 6 is mounted (the swinging motion state) is a movement in which the centrifugal force of the spinning top rotates in the vertical state to be reduced just before stopping, but unlike the spinning top, the nozzle mounting board 27 (27) does not rotate about the driven shaft 26, but is a state in which it swings radially with respect to the center of the driven shaft 26. As shown in FIG.

In more detail, when the nozzle mounting plate 27 swinging by the swinging means 25 is assumed to be 0 ° as shown in FIG. 8A, the right side is located at the top dead center and reaches 90 °. The lower surface is maintained at the bottom dead center when it reaches the 180 ° point as shown in FIG. 8B, and the horizontal state is maintained at the 270 ° point again. The upper surface of the nozzle mounting plate 27 shows the conical shape. .

Accordingly, even when the nozzle mounting plate 27 on which the plurality of nozzles 6 is mounted swings radially, the projection material supply pipe 29 and the compressed air supply pipe 30 connected to each nozzle 6 are not twisted.

As described above, the workpiece 3 is placed on the conveyor unit 2 in a state in which the nozzle mounting plate 27 on which the plurality of nozzles 6 is mounted is radially swinged, and then sequentially transferred to the lower part of the nozzle mounting plate 27. Unlike the conventional nozzle that sprayed the projection material in the vertical state, the spray angle of the projection material 5 sprayed from the nozzle 6 increases, so that even if the injection pressure of the projection material sprayed to the edge of the nozzle 6 drops The central part with a large injection pressure is injected to the vertical processing part, thereby processing the hole or the groove 3a in the vertical state on the unmasked part of the workpiece 3 as shown in FIG.

When the hole angle of the nozzle mounting plate 27 is formed in the workpiece 3, the larger the thickness of the workpiece or the deeper the depth of the groove 3a to be processed, the larger the hole or groove to be processed. It is understandable to be able to machine in a vertical state.

In addition, the size of the nozzle mounting plate 27 and the number of nozzles 6 can be appropriately determined and processed according to the size of the workpiece 3 to be processed.

As described above, after the desired hole or the groove 3a is formed in the process of the workpiece 3 being transferred to the inside of the chamber 4, the compressed air injection unit 8 is prevented as in the conventional short blast machine. By removing the projection material and dust from the workpiece (3) and at the same time to separate the projection material and dust by the cyclone 12 and the dust collector 16, a detailed operation description thereof has been described in detail in the prior art and will be omitted. do.

As described above, in the present invention, in the process of processing the workpiece whose surface is masked by the projection material injected from the nozzle, the nozzle mounting plate equipped with the plurality of nozzles is moved radially about the driven shaft by the rocking means. By setting the injection angle of the edge of the nozzle where the injection pressure drops, the hole or groove formed in the workpiece can be processed at right angles, so that post-processing is not necessary, so mass production is possible, so that it can be used for mobile phones or micro It is possible to supply precision parts such as a camera lens at low cost.

Claims (3)

In a short blast machine for supplying the workpiece to be processed to the part which is not to be processed into the chamber and processing the hole or groove by the projection material sprayed through the nozzle, a housing installed inside the chamber, and built in the housing Drive means, such as a motor for driving in response to the application of power, a rotating plate fixed to the axis of the drive means to rotate, a drive shaft eccentrically fixed to the rotating plate, one end fixed to the drive shaft, and the other end driven Rotating means fixed to the rocking means to shake the driven shaft radially in accordance with the drive of the drive means, and a plurality of nozzles fixed to the driven shaft and the projection material is injected is fixed circular drawing of the cone-shaped trajectory by the rocking motion of the driven shaft Short blast machine processing apparatus, characterized in that consisting of a nozzle mounting plate. The method of claim 1, Both ends of the drive shaft and the driven shaft is fixed, the oscillating means for rocking the nozzle mounting plate fixed to the driven shaft in accordance with the rotation of the rotating plate is a link bowl (RBI), characterized in that the processing apparatus of the short blast machine. The method of claim 1, The processing apparatus of the short blast machine, characterized in that to form a neck portion having a large outer diameter on the driven shaft and to install and support a support block that extends the neck portion inside the housing.

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