KR100569081B1 - Short ball dispersion prevention device of short blast system - Google Patents

Abstract

The present invention relates to a shot ball scattering prevention device that can prevent the shot ball from being scattered between the door gaps while the shot ball is projected from the impeller while the shot ball is projected from the impeller during operation in the shot blasting apparatus. A door opening / closing detection unit detecting an opening / closing state of the door; A controller configured to analyze a signal input from the door open / close detection unit and generate a corresponding control signal according to the door open / close; And a short ball scattering prevention unit which is driven according to an input of a control signal supplied from the control unit and prevents scattering of the short ball discharged to the outside through the door.

Shot Blast, Shot Ball, Shatter, Bucket, Drum, Door

Description

SHORT BALL DISPERSION PREVENTION DEVICE OF SHORT BLAST SYSTEM}

1 is a view showing the configuration of a shot blasting apparatus according to the prior art.

2 shows the operation of a shot blasting apparatus according to the prior art;

3 to 5 are views showing the configuration of the shot ball scattering prevention device according to an embodiment of the present invention.

6 and 7 is a process flow chart for explaining the operation of the shot ball scattering prevention apparatus according to an embodiment of the present invention.

The present invention relates to a shot ball scattering prevention device.

Typically, the shot blasting apparatus (Shot Blast M / C) is a device for removing the oxidized scale and foreign matter on the surface of the workpiece generated in the heat treatment (850 ℃ heating) process during the forging process.

The function of the shot blasting device is to remove the oxidative scale and foreign substances by impeller projecting shot ball (Φ1 × 1.5ℓ) at high speed on the workpiece surface.

The configuration of the shot blasting apparatus according to the prior art will be described with reference to FIG.

The shot blasting apparatus includes a door, an impeller, a drum, a bucket, a short ball, and a linear conveyor.

The door is a door for injecting a workpiece (work).

An impeller is a device that projects a shot ball at a high speed on a workpiece.

A drum is a device that flips a workpiece so that the short ball hits another surface of the workpiece.

The bucket is a device for feeding the workpiece into the drum.

The shot ball is a cut of a wire, and is a relatively small (Φ1 × 1.5 L) projectile.

The linear conveyor is a device for conveying finished workpieces.

2 is a view showing the operation of the shot blasting apparatus according to the prior art.

Referring to Figures 1 and 2 will be described the operation of the shot blasting apparatus according to the prior art.

First, in order to inject the workpiece into the bucket, the door by the air cylinder (Air Cylinder) is opened (step ① of FIG. 2).

Subsequently, the workpiece is charged into the bucket, the bucket is raised, the bucket is inverted into the drum, and the workpiece is introduced.

When the workpiece is put into the drum, the door is closed after the bucket is lowered (step ② of FIG. 2).

Then, the shot ball is projected to remove the oxidized scale and foreign matter on the surface of the workpiece (step ③ in FIG. 2).

In this series of working process, the drum reverses the workpiece by rotating the left and right to remove the opposite oxidation scale and foreign matter of the workpiece (step ④ of Figure 2).

The shot ball projected onto the workpiece through the impeller is supplied for a set time, which takes about 15 minutes.

In this way, when the supply of the short ball is finished after the shot ball is projected, the workpiece is returned.

The workpiece is conveyed as the drum is rotated 180 degrees and discharged onto the linear conveyor (step ⑤ in Fig. 2).

The workpieces conveyed through the linear conveyor are loaded into the workpiece pallet.

When using the above method, when the shot ball (size; Φ1 × 1.5ℓ) is projected from the impeller during the operation in the shot blasting device, which is essential in the forging factory, the short ball hits the workpiece and the shot ball pops in various directions. The short ball was scattered between the weakest door openings.

In order to solve this problem, conventionally, the shot blasting device manufacturer cuts the short ball by installing a vinyl curtain around the shot blasting device as a safety measure for other devices or workers.

Nevertheless, in the case of using the above method, the short ball projected from the impeller leaks into the gap of the door, causing a serious safety accident that hits the eyes and face of the worker.

In addition, there is a problem of a safety accident that the short ball falls on the factory floor and the passageway and slips when walking the worker.

SUMMARY OF THE INVENTION An object of the present invention is to provide a shot ball scattering prevention device that can prevent the shot ball from being scattered between the door gaps while the shot ball is projected from the impeller during operation in the shot blasting apparatus.

In order to achieve the above object, the shot ball scattering prevention device of the present invention is a shot ball scattering prevention device of the shot blasting apparatus, which detects the opening / closing state of a door that is opened and closed when the shot ball is inserted, and the opening and closing position of the door. A door opening / closing detector configured to include a proximity sensor mounted on the door and detecting an opening / closing state of the door by changing a distance between one side of the door and one side of the opening on which the door is mounted; A controller configured to analyze a signal input from the door open / close detection unit and generate a corresponding control signal according to the door open / close; A cover plate which is driven according to an input of a control signal supplied from the control unit to prevent scattering of the short ball discharged to the outside through the door, and is mounted on an outer surface of the door and covers an opening in which the door is mounted; And a coil unit mounted on one side of the cover plate to form an electrical circuit to magnetize the cover plate according to a power input supplied from the outside, and to the coil unit according to an input of a scattering prevention control signal supplied from the controller. It characterized in that it comprises a; short ball scattering prevention portion provided with a power supply for supplying power.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. While many specific details, such as the following description and the annexed drawings, are shown to provide a more general understanding of the invention, these specific details are illustrated for the purpose of explanation of the invention and are not meant to limit the invention thereto. And a detailed description of known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

3 to 5 are views showing the configuration of the shot ball scattering prevention device according to an embodiment of the present invention.

3 is a view illustrating a state in which a shot ball scattering prevention device according to an embodiment of the present invention is mounted on a shot blasting device, and FIG. 4 is a view illustrating a mounting position of the shot ball scattering prevention unit 310 mounted to a door. to be.

5 is a diagram illustrating an internal configuration of the shot ball scattering prevention unit 310 according to an embodiment of the present invention.

3 to 5, the configuration of the shot ball scattering prevention device of the present invention will be described.

An embodiment of the present invention includes a door opening / closing detection unit 302, a control unit 304, and a shot ball scattering prevention unit 310 in the shot ball scattering prevention device of the shot blasting apparatus.

The door open / close detection unit 302 functions to detect the open / closed state of the door that is opened and closed when the shot ball is inserted.

The door open / close detection unit 302 is configured as a proximity sensor mounted at the open / closed position of the door to detect the open / closed state of the door by changing a distance between one side of the door and one side of the opening to which the door is mounted according to the open / closed state of the door. .

The controller 304 analyzes a signal input from the door open / close detection unit 302 and generates a corresponding control signal according to the door open / close.

The shot ball scattering prevention unit 310 is driven according to the input of a control signal supplied from the controller 304 to prevent the shot ball from being scattered to the outside through the door.

The shot ball scattering prevention part 310 includes a cover plate 312, a coil part 314, a power supply part 316, and a cover 318.

The cover plate 312 is mounted to the outer surface of the door through bolts, respectively, and is mounted in a direction further covering the opening to which the door is mounted.

As shown in FIG. 4, eight cover plates 312 are mounted on four sides of the door.

As shown in FIG. 5, the coil unit 314 is mounted on one side of the cover plate 312 to form an electrical circuit to magnetize the cover plate 312 according to a power input supplied from the power supply unit 316. Do it.

The power supply unit 316 supplies power to the coil unit 314 in response to the scattering prevention control signal supplied from the control unit 304.

The cover 318 is mounted to the cover plate 312 as shown in FIG. 5 to prevent external exposure of the coil unit 314.

In the configuration as described above, the control unit 304 supplies a power supply control signal to the power supply unit 316 when the signal input from the door open / close detection unit 302 is in the door closed state (cover plate of the short ball scattering prevention unit 310 ( A control operation of magnetizing 312 is performed.

In addition, the control unit 304 releases the power supply control signal supplied to the power supply unit 316 when the signal input from the door open / close detection unit 302 is in the door open state to cover the cover plate 312 of the short ball scattering prevention unit 310. Perform a control operation to non-magnetize.

As described above, in the embodiment of the present invention, when the shot ball is projected from the impeller, the shot ball is splashed in all directions while the shot ball hits the workpiece, and the shot ball is spread between the most vulnerable door gaps. Electromagnets are installed on the four sides of the doors to prevent them from scattering, which causes the short balls that are scattered to stick to the electromagnets, thereby preventing serious accidents that hit the eyes and face of the workers. It is to prevent a safety accident that slips and falls while walking.

6 and 7 are process flowcharts for explaining the operation of the shot ball scattering prevention device according to an embodiment of the present invention.

An operation flow of the short ball scattering prevention apparatus according to the embodiment of the present invention will be described with reference to FIGS. 3 to 7.

First, the controller 304 cuts off the power supplied to the coil unit 314 constituting the shot ball scatter prevention unit 310.

That is, the cover plate 312 is turned off (electromagnet).

Here, the driving means may use a PL program (PLC) program generally used for the process control, it is assumed that the PL program is embedded in the control unit 304 according to an embodiment of the present invention.

Subsequently, the controller 304 detects the door open state.

The detection method of the door open state is made through a proximity sensor constituting the door open / close detection unit 302.

For reference, the driving means used to open and close the door uses an air cylinder.

If the door is open, the inverting operation is performed after the bucket is raised in accordance with the set process sequence (detection method; limit switch, driving means; electric motor).

The workpiece is then introduced. (Detection method; holding time 10 seconds, drive means; electric motor)

That is, when the door is open, the door by the air cylinder (air cylinder) to open the workpiece into the bucket, the workpiece is charged in the bucket, the bucket is raised to invert the bucket to the drum Input.

If the workpiece is loaded into the drum, close the door after the bucket is lowered.

The detection method and the driving means according to the bucket lowering and the door closing are as follows.

Bucket lowering (detection method; limit switch, drive means; electric motor)

Door closed (detection method; proximity sensor, drive means; air cylinder)

In this state, the controller 304 performs a control operation of supplying power to the coil unit 314 constituting the short ball scatter prevention unit 310.

In accordance with such a control operation, the cover plate 312 is electromagnet-on (driving means; PLC program).

Then, the shot ball is projected to remove the oxidized scale and foreign matter on the workpiece surface.

Shot ball projection driving means; Impeller driven, electric motor

When the shot ball is projected by the impeller and the shot ball hits the workpiece, and the shot ball splashes in all directions and the shot ball is scattered between the door gaps, the shot ball is different from the cover plate 312 (electromagnet) mounted on the four sides of the door. By sticking, it is possible to prevent the short ball from flying out through the door gap.

In this series of working processes, the drum is turned left and right to turn the workpiece over to remove the opposite oxidation scale and foreign matter from the workpiece.

Drum left and right rotation detection method; Proximity sensor, drive means; Electric motor

The shot ball projected onto the workpiece through the impeller is supplied for a set time, which takes about 15 minutes.

Short Ball Projection End Detection Method; Holding time 15 minutes, drive means; PLC program

In this way, when the supply of the short ball is finished after the shot ball is projected, the workpiece is returned.

The workpiece is conveyed as the drum is rotated 180 degrees and discharged onto the linear conveyor.

Workpiece conveyance detection method; Proximity sensor, drive means; Electric motor

The workpieces conveyed through the linear conveyor are loaded into the workpiece pallet.

Using the method described above, when the shot ball is projected by the impeller during the operation of the shot blasting device used in the forging plant, the shot ball is thrown in various directions while the shot ball is thrown in various directions, so that the shot ball is held between the most vulnerable door openings. The problem of scattering can be solved.

Therefore, as in the prior art, it is not necessary to install a vinyl curtain around the shot blasting device as a safety measure for other devices or workers during the scattering of shot balls.

As described above, the apparatus for preventing short ball scattering according to the present invention has an effect of reducing noise and indoor environment of a factory in which a shot blasting device is installed, and has an effect of reducing short balls by preventing short ball scattering.

Claims (6)

In the shot ball scattering prevention device of the shot blasting apparatus, Detecting the opening and closing state of the door that is opened and closed when the shot ball is inserted, it is mounted in the opening and closing position of the door through a change in distance between one side of the door and one side of the opening in which the door is mounted according to the opening and closing state of the door A door open / close detection unit configured of a proximity sensor detecting the open / closed state of the door; A controller configured to analyze a signal input from the door open / close detection unit and generate a corresponding control signal according to the door open / close; A cover plate which is driven according to an input of a control signal supplied from the control unit to prevent scattering of the short ball discharged to the outside through the door, and is mounted on an outer surface of the door and covers an opening in which the door is mounted; And a coil unit mounted on one side of the cover plate to form an electrical circuit to magnetize the cover plate according to a power input supplied from the outside, and to the coil unit according to an input of a scattering prevention control signal supplied from the controller. Short ball scattering prevention device provided with a power supply for supplying power. delete delete The method of claim 1, wherein the shot ball scattering prevention unit Short cover scattering prevention device, characterized in that further comprising a cover mounted to the cover plate to prevent external exposure of the coil unit. The method of claim 1, wherein the control unit performs a control operation of magnetizing the cover plate of the short ball scattering prevention unit by supplying a power supply control signal to the power supply unit when a signal input from the door open / close detection unit is in a door closed state. Short ball scattering prevention device. The control method of claim 1, wherein the control unit releases a power supply control signal supplied to the power supply unit when the signal input from the door open / close detection unit is in a door open state, and performs a control operation to non-magnetize the cover plate of the short ball scatter prevention unit. Short ball scattering prevention device, characterized in that.

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