KR101214095B1 - Nozzle module of sand blasting apparatus without stencil - Google Patents

Abstract

The present invention relates to a jet nozzle module of a stencil substitute sandblasting apparatus.
The present invention provides an injection nozzle module mounted at an end of an abrasive supply pipe of a sand blasting apparatus, the cylindrical nozzle nozzle being located in the injection nozzle housing and being disposed in the end of the abrasive supply pipe by an injection nozzle holder. Abrasive abrasive nozzles connected; And a processing material contact portion coupled to a lower end of the injection nozzle housing and having a spray hole at the center where the vertical processing line abuts from the injection nozzle and in close contact with the processing material.
Since the injection nozzle module of the present invention can be subjected to an abrasive processing process without stesyl, it completely solves the problem of cost, process and manpower supply and demand that a stencil should be introduced every time.

Description

Spray nozzle module of stencil substitute sandblasting device {NOZZLE MODULE OF SAND BLASTING APPARATUS WITHOUT STENCIL}

The present invention relates to a sandblasting apparatus, and more particularly to a sandblasting apparatus controlled by a computer.

Conventional sand blasting apparatuses for processing and engraving letters, patterns, etc. on an object have required additional stencil work. As a stencil working method, a stencil cutting method for cutting a rubber plate or an adhesive sheet using a cutting plotter, and a stencil method using a photosensitive emulsion or a photoresist film have been generally used. In addition, this stencil operation takes up most of the total machining / sculpting time of the sandblasting method, which is inevitable, and has increased the economic burden of using consumables.

That is, in the conventional sand blasting technology, the cost of introducing a stencil material and the provision of a stencil processing equipment such as a cutting plotter or a process facility for performing a series of processing such as exposure, development, and drying of a photoresist are provided. Additional costs were required. In addition, since the stencil working time in the sandblasting processing / engraving took most of the working time of the entire process, the sandblasting operation cost was forced to increase.

In addition, in the quality of sandblasting / engraving, in the current sandblasting technique, the supply and demand problem is always due to sufficient training on stencil operations and skilled personnel to be placed in the process. It was a headache in the field.

The inventors of the present invention have completed the invention as a result of long research efforts to fundamentally overcome the problems of the prior art as described above.

The basic technical problem of the present invention is to provide a sandblasting apparatus that does not require a stencil.

The reason for setting the above technical problem is to completely solve the cost and process problems of the prior art, which should introduce a stencil every time and install a stencil work process facility.

In addition, another object of the present invention is to significantly improve the productivity of the machining / engraving of the sandblasting apparatus. In order to improve productivity, it eliminates the time required for stencil work and at the same time, drastically reduces the manpower that has been put into each process required in the existing stencil work.

In other words, through the provision of sandblasting devices that do not require stencils, the productivity of sandblasting processing is greatly improved as a result of reducing stencil costs, stencil processing equipment, stencil working time, and stencil workforce. Done.

On the other hand, other unspecified purposes of the present invention will be further considered within the scope of the following detailed description and easily deduced from the effects thereof.

In order to achieve the above object, the present invention in the injection nozzle module mounted to the end of the abrasive supply pipe of the sandblasting apparatus,

Cylindrical nozzle nozzle housing;

An abrasive injection nozzle located in the injection nozzle housing and connected to an inside of an end of the abrasive supply pipe by an injection nozzle holder; And

And a processing material contact portion coupled to a lower end of the spray nozzle housing and having a spray hole in the center where the vertical processing line abuts from the spray nozzle and in close contact with the processing material. It features a nozzle module.

In one embodiment of the spray nozzle module of the stencil substitute sandblasting apparatus of the present invention, a plurality of through holes are formed in the lower portion of the spray nozzle housing, so that the abrasive generated during processing through the through holes is discharged. good.

In addition, in one embodiment of the injection nozzle module of the stencil substitute sandblasting apparatus of the present invention, the lower end portion of the injection nozzle housing is formed in an uneven shape, it is combined with the processing material contact portion in the convex portion. And, it is good to allow the abrasive generated during processing through the recessed portion is discharged.

In addition, in another preferred embodiment of the jet nozzle module of the stencil substitute sandblasting apparatus of the present invention, a plurality of particles which disperse the abrasive so as not to cause scratches or damage to the processed material by the abrasive generated during processing It is preferable to further include an air injection port.

In addition, in one embodiment of the jet nozzle module of the stencil substitute sandblasting apparatus of the present invention, a spring support protruding inward at a position higher than an end of the jet nozzle of the inner peripheral surface of the jet nozzle housing is formed, It is preferable to further include a support spring mounted on the spring support.

In addition, in one embodiment of the spray nozzle module of the stencil substitute sandblasting apparatus of the present invention, the workpiece contact portion is fastened to the inner surface member located in the central portion having the injection hole and the end of the spray nozzle housing It is made of an outer surface member located on the outer periphery of the inner surface member, it is preferable to be able to separate the inner surface member from the outer surface member.

In addition, the inner surface member is preferably provided with two or more different injection holes to be selectively available.

By the above configuration, the present invention can implement a sandblasting apparatus capable of continuous processing without the need for a stencil. This required the introduction of a stencil each time and the establishment of a stencil work process facility, which is an effective solution to completely solve the costly process problems that arise.

In addition, it brings the effect of reducing the work time and manpower to be put into each process required for the conventional stencil operation.

In addition, by removing the abrasive or dust on the surface of the processing material with the compressed air discharged from the air injection port, it is possible to prevent scratches or damage to the material surface that may occur when the injection nozzle module moves on the material surface. It also has several advantages.

Even if effects not specifically mentioned in the specification of the present invention are incorporated, the provisional effects expected by the technical features of the present invention are treated as described in the specification of the present invention.

1 is a cross-sectional view of the injection nozzle module 100 of the sandblasting apparatus according to an embodiment of the present invention.
2 is a cross-sectional view of the injection nozzle module 100 of the sandblasting apparatus according to another embodiment of the present invention.
3 is a perspective view of the injection nozzle module 100 of the sandblasting apparatus according to an embodiment of the present invention.
4 is a view showing a cross-sectional configuration of the workpiece material contact portion 160 according to an embodiment of the present invention.
5 is a plan view of the workpiece material contact portion 160 of FIG. 4 (however, the distinction between the inner surface member and the outer surface member is not shown).
6 is a plan view of an example of the injection nozzle housing 140.
Fig. 7 is a perspective view of Fig. 6. Fig.
Description of the Related Art
100: injection nozzle module 110: abrasive supply pipe
115: abrasive jet nozzle 119: jet nozzle holder fixing portion
120: injection nozzle holder 125: holder spring
130: injection nozzle fixing portion 140: injection nozzle housing
145: spring support 149: housing fastener
150: abrasive discharge port 160: processing material contact portion
161: processing material contact portion outer surface member 163: processing material contact portion inner surface member
161A: step 163B: cutout
163: processing material contact opening 165: injection hole
170: air injection port 200: processing material
* The accompanying drawings illustrate examples of the present invention in order to facilitate understanding of the technical idea of the present invention, and thus the scope of the present invention is not limited thereto.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if it is determined that the subject matter of the present invention may be unnecessarily obscured as it is obvious to the person skilled in the art, such as a known function related to the function, for example, the function of a sandblasting apparatus, the detailed description thereof will be omitted. do. In particular, in the present invention, since there is an element of the technical idea in the injection nozzle portion of the sand blasting apparatus substituted for the stencil in order not to use the stencil, at least in the aspect of the present invention, the opposite side to the injection nozzle of the abrasive supply pipe 110 is not relevant. Other parts located at, for example, dust collector, abrasive feeder, transfer device, computing device, motor, etc., can only be appropriately selected and applied, such as application of various conventional technologies, application of modified technology, application of new improvement technology, etc. Therefore, it is not considered important in this invention.

Figure 1 shows an embodiment of a schematic conceptual cross-sectional configuration of the injection nozzle module 100 of the stencil substitute sandblasting apparatus of the present invention. For the sake of convenience, the precise description at the position where the parts are in contact with each other is omitted. The injection nozzle housing 140 of the injection nozzle module 100 may have a geometric shape, and preferably may be formed in a cylindrical shape.

An abrasive spray nozzle 115 is positioned inside the spray nozzle module 100, and the spray nozzle 115 is connected to an abrasive feed device (not shown) through an abrasive feed pipe 110. The processing material side end of the injection nozzle module 100 is in contact with the processing material and the material contact portion 160 which is moved in contact with and detachably connected to the end of the injection nozzle housing 140.

An abrasive spray nozzle 115 is connected to an end of the abrasive supply pipe 110 of the sandblasting apparatus. The abrasive injection nozzle 115 is supported by the injection nozzle holder 120 in the injection nozzle module 100, and the injection nozzle holder 120 is brought into close contact with the inside of the end of the abrasive supply pipe 110. In order to prevent the holder 120 from exiting the abrasive supply pipe 110, the supply pipe fastener 130 is pressed onto the outer circumferential surface of the abrasive supply pipe 110 and attached to the vicinity of the end of the abrasive supply pipe 110. The injection nozzle holder 120 and the end of the abrasive supply pipe 110 may be integrally connected. In a preferred embodiment this connection can be made removable and detachable.

Preferably, the abrasive spray nozzle 115 is preferably fixed enough to perform a fine abrasive etching operation, or to perform a three-dimensional etching operation through the Z-axis control. To this end, in the vicinity of the end of the abrasive supply pipe 110 of the injection nozzle holder 120, the injection nozzle holder fixing part 119 is attached to the outer peripheral surface of the injection nozzle holder 120 in close contact. The spray nozzle holder fixing part 119 may be made of plastic or metal alloy, and is connected to a predetermined conveying device of an abrasive etching table (not shown) so that the spray nozzle module 100 may be conveyed in a desired direction. do. More preferably, the conveying apparatus mounted on the spray nozzle holder fixing part 119 can adjust the distance to the processing material by moving the spray nozzle module 100 on the Z axis. This enables three-dimensional etching of processed materials.

In another embodiment, the supply pipe fastener 130 and the injection nozzle holder fixing part 119 may be integrally formed. An embodiment thereof is the injection nozzle module 100 shown in FIG. 3.

Now look at the injection nozzle housing 140. Injection nozzle housing 140 may be coupled by a plurality of housing fasteners 149 at a predetermined position of the lower end of the injection nozzle holder 120. Preferably this fastener 149 may be four tightening bolts fastened in four directions. In addition, when the injection nozzle housing 140 is fastened to the injection nozzle holder 120 using the fastener 149, the predetermined position to be fastened may be selectively displaced, and thus, the processing material 200 And the distance between the injection nozzle 115 may be adjusted.

In another preferred embodiment, the outer circumferential surface at a predetermined position of the lower end of the injection nozzle holder 120 and the inner circumferential surface of the injection nozzle housing 140 may be screwed to each other made of a thread corresponding to each other. It is also possible to add the fastener 149 to this embodiment.

The geometry of the injection nozzle housing 140 is preferably cylindrical, and corresponds to the geometry of the injection nozzle holder 120.

A support spring 125 may be built in the injection nozzle housing 10. A spring protruding inwardly in a stepped shape at a position higher than the lower end of the injection nozzle on the inner circumferential surface of the injection nozzle housing 140 so that the easy spring 140 can be fixed without falling down in the injection nozzle housing 140. Support 145 may be formed in a horizontal direction along the inner circumferential surface. By mounting the support spring 125 on the spring support 15 as illustrated in FIG. 1, the injection nozzle housing 140 is pushed slightly toward the workpiece 200 by the elastic force of the support spring 125. It has elasticity, thereby allowing the processing material contact portion 160 positioned at the end of the injection nozzle housing 140 to more closely adhere to the processing material 200, and at the same time, the setting of the processing material 200 is horizontal. Even if the surface slightly off or smooth, the injection nozzle housing 140 may be in close contact with the processing material 200.

In the lower portion of the spray nozzle housing 140, an abrasive discharge hole 150 having a perforated surface may be formed in the vicinity of the workpiece material contact portion 160. As indicated by the arrow direction of FIG. 1, the abrasive discharge port 150 discharges the abrasive which is splashed after the abrasive jetted through the abrasive jet nozzle 115 strikes the processing material 200 to the outside of the jet nozzle housing 140. It is formed for.

In one embodiment of the abrasive outlet 150, as shown in Figure 3, the lower portion of the injection nozzle housing 140 may be perforated in four directions to form a plurality of through-holes. The end portion of the injection nozzle housing 140 that is coupled to the workpiece contact portion 160 may maintain its original shape and may be more easily coupled to the workpiece contact portion 160. However, since a predetermined height is provided between the end of the injection nozzle housing 140 and the perforated hole, the abrasive may not be discharged out of the injection nozzle housing 140 and may be trapped in the injection nozzle housing 140. For reference, FIG. 3 shows an embodiment in which the injection nozzle holder fixing part 119 is omitted for convenience, and thus does not correspond exactly to FIGS. 1 and 2.

Another embodiment of the abrasive outlet 150 is formed by cutting a portion of the end of the injection nozzle housing 140 in four directions as shown in Figures 6 and 7 to form a predetermined convex and convex portion 141 ) Is coupled to the workpiece contact portion 160, the concave portion is naturally formed when the injection nozzle housing 140 and the workpiece contact portion 160 is combined to form a predetermined through hole. The abrasive may be discharged out of the injection nozzle housing 140. Although it has an advantage in easy discharge of the abrasive, the fastening structure of the workpiece material contact portion 160 may be formed in the uneven structure of the end of the injection nozzle housing 140. It should be modified to correspond.

On the other hand, as shown in Figure 2, in order to disperse the abrasive discharged through the abrasive discharge port 150, a plurality of air injection port 170 may be installed in the vicinity of the abrasive discharge port 150. Preferably, four air injection holes 170 may be formed across the outer surface of the injection nozzle housing 140 to disperse air in four directions. As shown in the embodiment of Figure 3, the air injection port 170 is to be fixed through the injection nozzle fixing part 130 for smooth management of the injection hose, and connected to the integrated hose 175, this integrated hose ( 175 may be connected to an air spray device (not shown). In another embodiment, the air injection port 170 may be positioned outside the jet nozzle fixing part 130.

The reason for dispersing the abrasive discharged through the abrasive discharge port 150 through the plurality of air injection holes 170 as described above is that the nozzle module 100 moves up, down, left, and right while sandblasting. This is to prevent scratches or damage to the processing material 200.

Returning to FIG. 1 again, the processing material contact portion 160 fastened to the lower end of the injection nozzle housing 140 is brought into close contact with the processing material 200, and the injection hole 165 is located at the center of the processing material contact portion 160. Is formed. The vertical cutting line starting from the injection hole 165 may configure the injection hole 165 to coincide with the outlet of the abrasive injection nozzle 115. The processing material contact unit 160 and the abrasive injection nozzle 115 are spaced apart from each other by a predetermined distance in the injection nozzle housing 140, and the separation distance is a blow distance that strikes the abrasive material.

The nozzle module 100 of the sandblasting apparatus is moved to a desired position by a computer program, and for this purpose, it is moved through a motor and a table equipment. This part is a known technique. When the injection nozzle module 100 moves, the processing material contact portion 160 coupled to the end of the injection nozzle housing 140 also moves in close contact with the processing material 200, and continuously moves to the abrasive injection nozzle 115. Since the abrasive injected from the hitting the injection hole 165 continuously, it is possible to process a certain letter or pattern without the stencil.

If necessary, the distance between the abrasive spray nozzle 115 and the spray hole 165 may be adjusted. This may not be controlled by the internal configuration of the nozzle module 100 itself, but may be achieved by Z-axis control of the nozzle module 100 by sand blasting equipment. One embodiment of such a method can be achieved by the configuration position of the jet nozzle holder fixing part 119, the movement in the Z-axis direction of the conveying device to be coupled, and the like. In addition, the abrasive injection pressure of the nozzle module 100 may be adjusted.

In the present invention, in particular, the processing width of the letter or pattern may be determined according to the size of the diameter L of the injection hole 165. If the diameter L of the injection hole 165 is large, the processing width will be large, and if the diameter L of the injection hole 165 is small, the processing width will be narrowed. Therefore, according to a desired processing method, the plurality of workpiece material contact portions 160 having different diameters (L) sizes of the injection holes 165 may be replaced and used.

See Figure 4. 4 shows a detailed configuration example of the workpiece material contact portion 160. Preferably, the workpiece material contact portion 160 may be formed of two kinds of members. An inner surface member 163 positioned in an area (center portion) in which the abrasive is hit in the vertical direction from the injection nozzle 115, and an outer surface member 161 positioned in the other area and fastened to the end of the injection nozzle housing 140; ) Is that.

The circumferential end of the outer surface member 161 is fastened to the end of the injection nozzle housing 140, and an opening 162 is formed inside the outer surface member 161 in a circular shape having a predetermined diameter (upper diameter). do. The inner end portion of the outer surface member 161 toward the opening 162 may be continuously formed in a circumferential direction with a stepped portion 161A having a lower side protruding and an upper side not protruding, as constituting a stairway of one floor. have.

The inner surface member 163 has a size and shape corresponding to the opening 162. The inner surface member 163 has an upper diameter of the inner surface member is substantially the same as the upper diameter of the opening 162, the lower side of the inner surface member 163 of the form corresponding to the stepped portion (161A) of the outer surface member 161 The notch 163B is formed continuously in the circumferential direction. Preferably, the height of the stepped portion 161A and the height of the cutout portion 163B may be the same.

Accordingly, when the inner surface member 163 is placed on the opening 162, the inner surface member 163 is caught by the stepped portion 161A so that the inner surface member 163 does not fall below the outer surface member 161. Through this, the inner member 163 can be easily replaced by using the consumable together. In addition, since the central opening of the inner surface member 163, that is, the injection hole 165, can be used while changing the inner surface members 163 different from each other according to the etching situation, the efficiency of the abrasive etching can be greatly improved. That is, the same effect as that of using a plurality of abrasive spray nozzles having different diameters can be realized by a simple method.

The inner surface member 163 located in the region of the central portion is preferably a material having high heat resistance and high wear resistance to withstand the impact of the abrasive. The material of the inner surface member 163 may be a special ceramic or metal such as boron carbide or silicon carbide. In addition, the outer surface member 161 in close contact with the surface of the processing material 200 is preferably a material that does not cause damage to the surface of the processing material. Preferably, engineering plastics may be used, and fiber reinforced plastics may also be used. However, the scope of the present invention is not limited by the above materials.

On the other hand, the interruption of the abrasive injection nozzle 115 moving in the XY table is premised that the injection interruption of the abrasive through the solenoid valve (electromagnetic valve) is usually made, and in the case of the processing instruction, the abrasive is injected, and processing When finished or moved without processing, the abrasive is controlled so that it is not sprayed. In addition, the injection nozzle holder is moved through a solenoid valve or a motor (Z axis). Therefore, the spray nozzle housing 140 positioned at a certain distance from the surface of the processing material 200 is in close contact with the surface of the processing material 200 when a processing command is given. It can be controlled to maintain.

On the other hand, the scope of protection of the present invention is not limited by the embodiments explicitly described above. In addition, the shape and numerical values of the drawings are intended to illustrate the technical idea of the present invention by way of example, and the protection scope of the present invention by the shape and numerical values should not be limited or the configuration of the present invention only. It should be noted that the protection scope of the present invention may not be limited due to obvious changes or substitutions in the technical field to which the present invention belongs.

Claims (7)

In the injection nozzle module mounted to the end of the abrasive supply pipe of the sandblasting apparatus,
Cylindrical nozzle nozzle housing;
An abrasive injection nozzle located in the injection nozzle housing and connected to an inside of an end of the abrasive supply pipe by an injection nozzle holder; And
It is coupled to the lower end of the injection nozzle housing, and has a spray hole in the center of the vertical processing line abuts from the injection nozzle, the material contact portion in close contact with the processing material;
The lower end of the injection nozzle housing is formed in a concave-convex shape, is coupled to the processing material contact in the convex portion, characterized in that the abrasive generated during processing through the concave portion is discharged Injection nozzle module for stencil sandblasting device. delete delete The method of claim 1,
The spray nozzle module of the stencil substitute sandblasting apparatus, further comprising a plurality of air injection holes for dispersing the abrasive so that the workpiece is not damaged or damaged by the abrasive generated during processing. The method of claim 1,
A spring support protruding inward is formed at a position higher than an end of the injection nozzle of the inner peripheral surface of the injection nozzle housing,
The injection nozzle module of the sandblasting device of the stencil, characterized in that it further comprises a support spring mounted on the spring support. The method of claim 1,
The processing material contact portion is formed of an inner surface member positioned at a central portion having the spray hole, and an outer surface member fastened to an end of the spray nozzle housing and positioned at an outer circumference of the inner surface member. The nozzle assembly of the sandblasting apparatus for stencils, characterized in that it can be separated from. The method according to claim 6,
The inner surface member is provided with two or more different injection holes are selectively available, the injection nozzle module of the sandblasting apparatus for stencils.

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