KR100790013B1 - Removing foreign material apparatus - Google Patents

Abstract

The present invention relates to a foreign matter removal device for removing the residue remaining in the interior of the structure manufactured by casting molding, the foreign matter removal work of the workpiece and the recovery and supply of the shot ball is automatically made, the operation is easy, The object of the present invention is to provide a debris removal device that can be quickly removed and that foreign matters can be easily removed and the short balls can be easily recovered. In order to achieve the above object, the foreign material removal apparatus according to the present invention includes a processing chamber having a hole for entering and exiting a workpiece, a transfer part for moving the workpiece to the processing chamber, and installed on an upper portion of the processing chamber. A shot ball spraying part for spraying the shot ball into the moved work piece, a worktable installed on a moving line of the conveying part to fix the work piece and to change the direction of the opening of the work piece toward the short ball spraying part, and It is connected to the chamber or the shotball injection unit includes a suction unit for sucking the air to remove the foreign matter therein.

Shotball, foreign object, protrusion, burr, burr, nozzle, chamber, moving, dust collection

Description

Debris Removal Device {REMOVING FOREIGN MATERIAL APPARATUS}

1 is a schematic view showing a foreign matter removal apparatus according to the prior art.

Figure 2 is a view showing the inside of the workpiece removed by the foreign matter removal apparatus according to the prior art.

Figure 3 is a schematic diagram showing a debris removal device according to the present invention.

Figure 4 is a block diagram of a state of removing the foreign matter by using the foreign matter removal apparatus according to the present invention.

Figure 5 is a view showing the inside of the workpiece removed by the foreign matter removal apparatus according to the present invention.

<Explanation of symbols for the main parts of the drawings>

40: foreign matter removal device 50: processing chamber

52: entrance 54: exit

56: transfer unit 60: short ball injection unit

62: Short Ball 64: Injection Nozzle

65: extension hose 66: storage unit

68: overflow 70: robot

80: worktable 92: first recovery part

94: second recovery unit 100: suction unit

102: dust collector 104: foreign matter

P: Workpiece

The present invention relates to a foreign matter removal device for removing the residue remaining in the interior of the structure manufactured by casting molding, and more particularly, to remove the foreign matter by spraying the shot ball in the interior of the structure, and to recover the injected short ball It relates to a debris removal device for reuse.

Generally, a structure having a complicated shape therein is produced by casting molding. As an example of the structure manufactured by casting molding, there is a cylinder block for forming an engine or the like, and the cylinder block has a space for moving the piston therein and an inner flow path for moving the cooling fluid. .

In general, looking at the manufacturing process of the above-described cylinder block, by using a molding sand to make a mold corresponding to the outer shape of the cylinder block, injecting the casting material into the mold, and then hardening it to manufacture a cylinder block. Then, the mold is removed for taking out the cylinder block. At this time, a protrusion may be formed inside the cylinder block, or a part of the molding sand may remain. Such a burr or foundry sand blocks the internal flow path or generates flow resistance so that it is removed through a foreign material removal process.

1 is a block diagram schematically showing a foreign material removing apparatus according to the prior art, Figure 2 is a view showing the inside of the workpiece removed by the foreign material removing apparatus according to the prior art.

In the foreign material removal process according to the prior art, a worker wears a protective suit and shoots a small metal particle ball (hereinafter referred to as a short ball 12) to the inside of the cylinder block P by using an injector, and removes the foreign matter. Foreign material removal device 10 has been developed and used.

The debris removal device 10 stores the shot ball 12 and has a storage portion 16 formed in a hopper shape at an upper portion thereof, and an injection nozzle 14 connected to the storage portion 16 to spray the shot ball 12. ), And the injection nozzle 14 is connected to an air supply line 18 for supplying air for injecting the short ball 12.

However, since the conventional foreign matter removing device 10 must be provided with an injection valve (not shown) for controlling the supply of air required for the injection operation separately from the operation of the shot ball 12, the injection of the shot ball 12 The work and the spraying work are performed by separate operations, which is cumbersome to operate, which increases the cost of production and maintenance. In addition, in recent years, a device for automatically recovering and supplying the shot ball 12 has been developed, but the shot angle of the shot ball 12 with respect to the workpiece is not constant. There is also a side that is not easy, as shown in Figure 2, not only does not completely remove the molding sand 24 remaining therein, but also the sprayed shot ball 12 is caught between the internal parts causing problems do. In addition, in the conventional foreign matter removing apparatus 10, the shot ball 12 may not be accurately sprayed toward the opening of the workpiece, thereby reducing the foreign matter removal efficiency.

An object of the present invention is to solve the problems of the prior art described above, the work is easy to remove the foreign matter of the workpiece and the recovery and supply of the shot ball automatically, the operation speed is high, the opening of the workpiece is spray nozzle It is possible to switch the direction so that the foreign matter can be easily removed, to provide a foreign matter removal device that is easy to recover the shot ball.

In order to achieve the above object, the foreign material removal apparatus according to the present invention includes a processing chamber having a hole for entering and exiting a workpiece, a transfer part for moving the workpiece to the processing chamber, and installed on an upper portion of the processing chamber. A shot ball spraying part for spraying the shot ball into the moved work piece, a worktable installed on a moving line of the conveying part to fix the work piece and to change the direction of the opening of the work piece toward the short ball spraying part, and It is connected to the chamber or the shotball injection unit includes a suction unit for sucking the air to remove the foreign matter therein.

Here, the processing chamber may include a door that shields the hole. The apparatus may further include a recovery unit for recovering the shot ball injected into the workpiece. In addition, the suction unit may include a dust collecting unit for separating the foreign matter sucked with the air.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a schematic diagram showing a debris removal device according to the present invention, Figure 4 is a block diagram of a state of removing the debris using the debris removal device according to the present invention.

The foreign material removal apparatus 40 according to the present invention, as shown in Figures 3 and 4, includes a processing chamber 50 for sealing the workpiece (P) with the outside, the processing chamber 50 is a workpiece An inlet 52 and an outlet 54 for the entry and exit of (P) are formed. In addition, the inlet 52 and the outlet 54 are provided with doors for limiting the opening and closing, respectively, and selectively open and close only when the workpiece P enters or exits. In the embodiment of the present invention, although the inlet 52 and the outlet 54 have a separate configuration, it is also possible to enter and exit at the same time through one hole.

In addition, the processing chamber 50 is connected to the transfer unit 56 for the transfer of the workpiece (P). The transfer part 56 includes a conveyor and continuously supplies and discharges the workpiece P.

On the other hand, a shot ball injection unit 60 for spraying the shot ball 62 to the workpiece (P) is provided on the upper portion of the processing chamber (50). The shot ball spraying part 60 sprays the shot ball 62 made of a small metal particle ball together with air, and removes a residue formed on the workpiece P or a burr formed in the workpiece P. do.

The short ball injection unit 60 includes a storage unit 66 for storing the short ball 62, and an upper portion of the storage unit 66 is in a hopper form to facilitate supply of the short ball 62. Is formed. In addition, the shot ball injection unit 60 includes an injection nozzle 64 connected by an extension hose 65, and the injection nozzle 64 is disposed to face the opening of the workpiece P. In addition, when the amount of the shot balls 62 supplied is large, the storage unit 66 of the shot ball injection unit 60 is provided with an overflow 68 for discharging them. Here, the injection nozzle 64 is installed to be movable by the robot 70, and moves according to the opening position and size of the workpiece (P).

In addition, in the processing chamber 50 is a work table 80 is installed on the moving line of the transfer unit 56. The work table 80 is positioned below the short ball injection unit 60 to receive the workpiece P from the transfer unit 56. In addition, the work table 80 is provided with a stopper (not shown) for limiting the movement of the work piece P so that the work piece P moved from the transfer part 56 can be placed in the correct work position. In addition, the stopper is connected to the sensor connected to the door of the inlet, outlet 52, 54, the sensor closes the door of the inlet, outlet 52, 54 when the workpiece (P) is in contact with the stopper To generate a control signal.

In addition, the work table 80 is provided with a fixing clamp (not shown) for fixing the workpiece (P) transferred from the transfer unit 56. In addition, the work table 80 may rotate the workpiece (P) fixed by the fixing clamp. Accordingly, the workpiece P fixed to the work table 80 has an opening facing the injection nozzle 64 of the shot ball injection unit 60.

And, the lower portion of the work table 80 is provided with recovery parts 92 and 94 for recovering the shot ball 62 injected into the workpiece (P).

The recovery parts 92 and 94 may include a first recovery part 92 for transferring the short ball 62 dropped to the lower portion of the processing chamber 50 to the outside of the processing chamber 50, and the first recovery part. It consists of a second recovery portion 94 for supplying the shot ball 62 conveyed by the portion 92 to the shot ball injection portion 60.

The first recovery unit 92 includes a moving means such as a belt or a feeder, and moves the short ball 62 in a substantially horizontal state. In addition, the second recovery portion 94 includes a bucket and the like, and moves the shot ball 62 transported by the first recovery portion 92 to a substantially vertical state of the shot ball injection portion 60. Feed to the top.

On the other hand, the shot ball 62 sprayed on the workpiece (P) includes a foreign material such as a projection (burr) or cast sand, finely divided shot ball 62 removed from the workpiece (P), the shot ball 62 In order to reuse them, these foreign substances must be separated.

To this end, the processing chamber 50 is provided with a suction unit 100 for sucking the air to remove the foreign matter therein. In addition, the suction part 100 includes a dust collecting part 102 for separating and discharging the foreign matter sucked with the air.

In addition, the suction unit 100 is also connected to the storage unit 66 of the shortball injection unit 60, and sucks the air in the storage unit 66 of the shortball injection unit 60, the dust collecting unit ( 102 to separate the foreign matter (104) sucked in with the air.

As such, the air passing through the dust collecting part 102 and the foreign matter separated primarily is discharged to the central dust collecting part 106 provided outside, and undergoes a process of removing the foreign matter secondary by the central dust collecting part 102. .

Looking at the action of the foreign matter removal apparatus configured as described above are as follows.

First, when the workpiece P is placed on the conveyor of the transfer unit 56, the transfer unit 56 is operated to move the workpiece P into the processing chamber 50. At this time, the inlet 52 of the processing chamber 50 is a state that the door is open, when the workpiece (P) moving by the transfer unit 56 touches the stopper of the work table 80, the transfer unit 56 Operation is stopped and the doors of the inlet 52 and the outlet 54 are closed.

In addition, the worktable 80 is a fixed clamp is operated to fix the workpiece (P), the worktable 80 is rotated about 90 degrees so that the opening of the workpiece (P) shot ball injection unit 60 To face the injection nozzle (64).

Next, when air is supplied to the shot ball injection unit 60, the shot ball 62 is injected through the injection nozzle 64. The shot ball 62 sprayed in this way is dropped to the projection (burr) or casting sand of the workpiece (P) and discharged to the lower side. At this time, the air in the processing chamber 50 is sucked through the suction unit 100 is discharged to the dust collector 102. In addition, the dust collector 102 separates and discharges the foreign matter 104 contained in the intake air.

On the other hand, the short ball 62 discharged to the lower side of the workpiece (P) is discharged to the outside of the processing chamber 50 through the first recovery unit 92, and then through the second recovery unit 94 It is supplied to the storage 66 of the shotball injection section 60.

In addition, the storage unit 66 is connected to the suction unit 100, the suction unit 100 sucks the foreign matter with the air in the storage unit 66. In addition, the air sucked from the suction part 100 is supplied to the dust collecting part 102, and after the foreign matter is separated together with the air sucked from the processing chamber 50, it is discharged to the external central dust collecting part 102.

When the foreign matter removal process of the workpiece (P) is completed through the above-described process, the work table 80 is rotated about 90 degrees in the reverse direction, open the door of the outlet 54 to transfer the workpiece (P).

Here, the workpiece P may be, for example, a workpiece P having a flow path formed therein, such as a cylinder block. As such, the inside of the cylinder block from which the foreign matter is removed by using the foreign matter removing device 40 of the present invention is as shown in FIG. 5, and the residue as well as the burrs are completely removed. Therefore, no projections or casting sands remain, which prevents the internal flow path from being blocked by foreign matter.

As described above, the foreign material removing apparatus according to the present invention has been described with reference to the illustrated drawings, but the present invention is not limited to the embodiments and drawings described above, and the present invention is generally within the scope of the claims. Of course, various modifications and variations can be made by those skilled in the art.

The foreign matter removal apparatus according to the present invention configured as described above is easy to work with the foreign matter removal work of the workpiece and the recovery and supply of the shot ball is automatic, the working speed is improved, the direction of the workpiece toward the spray nozzle This conversion is high in the removal efficiency of the foreign matter, the short ball can be easily recovered. In addition, the removal process of the foreign matter is made automatically, the processing chamber is sealed during operation, reducing the risk of safety accidents, and can reuse the shortball has the effect of reducing the maintenance cost.

Claims (5)

A processing chamber in which holes for entering and exiting the workpiece are formed; A transfer part for moving the workpiece to the processing chamber; A shot ball spraying unit installed at an upper portion of the processing chamber to spray the shot ball to a workpiece moved by the transfer unit; A worktable installed on a moving line of the conveying part to fix the workpiece and to change a direction of the workpiece to face the shot ball jetting part; And a suction part connected to the processing chamber or the short ball spraying part to suck air in order to remove the foreign matter therein. The method according to claim 1, And said processing chamber comprises a door that shields said hole. The method according to claim 1, The foreign material removal apparatus further comprises a recovery unit for recovering the shot ball sprayed on the workpiece. delete The method according to claim 1, The suction unit comprises a dust collecting unit for separating the foreign matter sucked with the air.

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