JP2011125981A - Sandblasting processing device and processing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact sandblasting processing device, sandblasting processing both surfaces of a metal plate at a time, even when the metal plate is thin. <P>SOLUTION: This device is equipped with: a first pair 31 of rollers sandwiching the metal plate B and rotating on vertical axes Za so as to send the metal plate B toward the downstream; a second pair 32 of the rollers sandwiching the metal plate B and rotating on the vertical axes Za so as to send the metal plate B toward the downstream; a first gun G1 jetting an abrasive material S onto a first surface B1 of the metal plate B in the area between the first pair 31 of the rollers to the second pair 32 of the rollers; a second gun G2 provided at a position directly opposite to the first gun G1, so as to jet the abrasive material S onto a second surface B2 of the metal plate B in the area between the first pair 31 of the rollers to the second pair 32 of the rollers; and a driving device reciprocally moving the first gun G1 and the second gun G2 vertically synchronously to each other. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a sandblasting apparatus for a metal plate and a processing method thereof.

  Conventionally, an apparatus for performing sandblasting on a metal plate has been proposed (see, for example, Patent Document 1).

JP-A-6-297335 (FIG. 1)

As shown in FIG. 3, the conventional sandblasting apparatus includes a grinding tank 100 that performs sandblasting of the metal plate B, and a cyclone tank 101 that collects the abrasive S. The abrasive S supplied from the supply pipe P1 is sprayed from the gun G to the metal plate B placed in the grinding tank 100 by the high-pressure air C, and the metal plate B is subjected to sandblasting.
The abrasive S in the grinding tank 100 passes through the recovery pipe P2 and is recovered by the cyclone tank 101. The collected abrasive S is conveyed to the supply pipe P1 side and sent to the supply pipe P1.

However, in the conventional sandblasting apparatus, it is necessary to temporarily collect the used abrasives using a cyclone system using the cyclone tank 101 of FIG. 3 or an elevator system. For this reason, a separate device for collecting the abrasive is required, the device becomes huge, and a large installation area is required.
Moreover, in order to process both surfaces of the metal plate B, it is necessary to turn over the metal plate B placed in the horizontal direction H and perform the processing operation again, which is complicated.
Furthermore, when processing while moving the metal plate B, in the case of a thin metal plate or the like, the metal plate may be bent by the collision of the abrasive S.

  Therefore, it is conceivable to simultaneously process both surfaces of a metal plate placed in the horizontal direction from above and below. However, since the weight of the abrasive is added to the upper surface of the metal plate, the abrasive strikes the metal plate more strongly than the lower surface, so it is difficult to make both surfaces of the metal plate in the same ground state.

  Accordingly, an object of the present invention is to provide a compact sandblasting apparatus capable of processing both surfaces of a metal plate at once even if it is a thin metal plate.

  In order to achieve the above object, a sandblasting apparatus of the present invention is a sandblasting apparatus suitable for sandblasting both a first surface of a metal plate and a second surface opposite to the first surface. A pair of first rollers that sandwich the metal plate and rotate around a vertical axis to feed the metal plate downstream; and a metal plate that sandwiches the metal plate and rotates around the vertical axis. A pair of second rollers for sending the material toward the downstream, a first gun for injecting abrasive onto the first surface of the metal plate in a region between the first roller and the second roller, and directly opposite the first gun A second gun for injecting abrasives onto the second surface of the metal plate in a region between the first roller and the second roller, and the first gun and the second gun in synchronization with each other vertically With a reciprocating drive device That.

  According to the present invention, unlike the case of processing a metal plate placed in a horizontal direction in the past, the metal plate is processed in a standing state along the vertical plane, so that the installation area of the processing apparatus itself can be reduced. Can do.

  In addition, when processing is performed with the metal plate placed in the horizontal direction, the grinding material remains on the metal plate, and therefore a process for removing the grinding material after processing is required. Since the processing is performed in the direction, the grinding material falls, and the process of removing the grinding material becomes unnecessary.

  Furthermore, when processing on one side of a metal plate, the abrasive that is sprayed at high speed may cause distortion in the case of a thin metal plate or the like, whereas in the apparatus of the present invention, the first gun and Since the second gun is provided at a position directly opposite and the abrasive is simultaneously sprayed on the front and back of the same portion of the metal plate, there is no risk of distortion even with a thin metal plate.

  Moreover, since it processes while conveying a metal plate in the state stood along a perpendicular surface, the abrasives sprayed on the metal plate fall naturally, and are collected in the lower part. By reusing the dropped and collected abrasive, a cyclone tank or the like for collecting the abrasive becomes unnecessary, and the processing apparatus can be formed extremely compact.

  Furthermore, in conventional processing equipment, methods such as collecting abrasives with a cyclone tank have been adopted, so the distance traveled by abrasives in the equipment is long, and it takes about half a day to replace the abrasives. It was hanging. On the other hand, in this processing apparatus, since the abrasive falls and collects in the apparatus, the replacement of the abrasive becomes easy. When the inventor replaced the abrasive using this apparatus, it was possible to completely replace the abrasive in about 20 minutes. Therefore, since abrasives having different particle diameters can be exchanged in a short time, it is possible to easily cope with various types of sandblasting.

  In the present invention, the target metal plate is not particularly limited. For example, the metal plate can be used for processing an aluminum plate, and a thin plate having a thickness of about 0.2 mm to 5.0 mm can be preferably processed. In addition to an unprocessed aluminum plate, the aluminum plate can be used to process a plate that has already been sandblasted and used in a factory line to cause bending.

It is a schematic perspective view which shows the sandblasting method concerning this invention. It is a schematic sectional drawing which shows the sandblasting apparatus. It is a schematic side view which shows the conventional sandblasting apparatus.

  As a preferable processing method for performing the sandblasting of the present invention, the first surface and the second surface of the metal plate are along a vertical surface by rotationally driving the pair of first and second rollers, Moving the metal plate in a horizontal direction; moving the metal plate; maintaining the first and second guns facing each other directly; and moving the first and second guns And a step of injecting abrasives from the first and second guns while reciprocating in synchronization with the upper and lower sides, and sandblasting is performed on predetermined regions of the first and second surfaces.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
The sand blasting apparatus shown in FIG. 1 performs sand blasting on both the first surface B1 and the opposite second surface B2 of the metal plate B while moving the metal plate B standing in the vertical direction Z in the horizontal direction H. Is to be applied.

overall structure:
As shown in FIG. 1, the apparatus includes first and second rollers 31 and 32, and first and second guns G1 and G2.
The first roller 31 is composed of a pair of rollers 30 that rotate about the vertical axis Za, sandwiches both surfaces B1 and B2 of the metal plate B, and conveys them downstream, upstream of the conveying direction H1. Is provided.
The second roller 32 includes a pair of rollers 30 that rotate about the vertical axis Za. The second roller 32 sandwiches both surfaces B1 and B2 of the metal plate B and conveys them downstream, and is downstream of the first roller 31. On the side.
Therefore, the metal plate B is moved in the horizontal direction H by the first and second rollers 31 and 32.

As shown by the arrows in FIG. 1, the first and second rollers 31 and 32 are rotationally driven about a vertical axis Za by a driving device (not shown).
The pair of rollers 30 and 30 is set so that the distance between the rollers 30 and 30 changes according to the thickness and strain of the metal plate B by a clamping mechanism (not shown) so that the metal plate B does not fall.

The first gun G1 is provided in a region between the first roller 31 and the second roller 32, and injects the abrasive S (FIG. 2) onto the first surface B1 of the metal plate B.
The second gun G2 is provided in a position directly opposite to the first gun G1, and the abrasive S (FIG. 2) is applied to the second surface B2 of the metal plate B in the region between the first roller 31 and the second roller 32. It is to be sprayed on.
The first and second guns G1 and G2 are reciprocated in the vertical direction by a driving device 4 (FIG. 2) described later.

Grinding chamber 2:
The first and second rollers 31 and 32 and the first and second guns G1 and G2 are provided in the grinding chamber 2 shown in FIG.
A slope 2d is formed at the bottom of the grinding chamber 2 so that the abrasive S injected from the first and second guns G1 and G2 gathers in the center of the bottom of the grinding chamber 2.

First and second guns G1, G2:
As shown in FIG. 2, the first and second guns G1 and G2 are provided in pairs in the vertical direction Z, respectively. The abrasive S supplied from the cutting material passage 12 is injected from the first and second guns G1 and G2 by the compressed air from the air passage 11.
After the abrasive S injected from the first and second guns G1 and G2 collides with the metal plate B, it slides down the slope 2d of the grinding chamber 2 and collects at the bottom of the grinding chamber 2. The abrasive S collected at the bottom of the grinding chamber 2 passes through the cutting material passage 12 and is again supplied to the first and second guns G1 and G2 and injected.

First and second gun units 10, 20:
The first and second guns G1 and G2 are fixed to the first and second gun units 10 and 20, respectively. Since the gun units 10 and 20 are provided symmetrically to each other, the first gun unit 10 will be described as an example.
A rail 14 extending in the vertical direction Z is fixed in the grinding chamber 2. The pair of upper and lower first guns G1 and G1 are fixed to the support base 13, and the support base 13 is rotatably provided with guide rollers 15 and 15 that sandwich the rail 14 from the left and right. Therefore, the first gun unit 10 is set to be vertically movable in the vertical direction Z while being guided by the rail 14.
Accordingly, the first and second gun units 10 and 20 are set so as to be vertically movable along the rail 14 in the vertical direction Z, respectively.

Drive device 4:
A driving device 4 is provided in the upper part of the grinding chamber 2.
The drive device 4 includes a drive pulley 40, a first driven pulley 41, and a second driven pulley 42.
The driving pulley 40 is rotated around the main shaft O by a driving device (not shown). A second gun belt 62 is hung on the drive pulley 40, and one end of the second gun belt 62 is fixed to the support base 13 of the second gun unit 20. Therefore, the second gun unit 20 is moved up and down by the rotation of the drive pulley 40.

A first belt 51 is stretched between the driving pulley 40 and the first driven pulley 41, and the first driven pulley 41 is rotated by the rotation of the driving pulley 40. A first gun belt 61 is hung on the first driven pulley 41, and one end of the first gun belt 61 is fixed to the support base 13 of the first gun unit 10.
Therefore, when the drive pulley 40 rotates, the first gun unit 10 fixed to the end of the first gun belt 61 moves up and down.

Therefore, when the drive pulley 40 rotates in the direction of the arrow in FIG. 2, the second gun unit 20 fixed to the end of the second gun belt 62 rises. At the same time, the first driven pulley 41 is rotated via the first belt 51, and the first gun unit 10 fixed to the end of the first gun belt 61 is raised in synchronization with the rise of the second gun unit 20.
On the other hand, when the drive pulley 40 rotates in the reverse direction, the second gun unit 20 fixed to the end of the second gun belt 62 descends. At the same time, the first driven pulley 41 is reversely rotated via the first belt 51, and the first gun unit 10 fixed to the end of the first gun belt 61 is lowered in synchronization with the lowering of the second gun unit 20.

Here, a second belt 52 is stretched between the drive pulley 40 and the second driven pulley 42, and a weight suspension belt 63 having a weight W fixed to the end of the second driven pulley 42. Is hung. The weight W is set to a weight commensurate with the weights of both the gun units 10 and 20, and is for reducing the burden on the drive device that rotates the drive pulley 40.
A limit switch may be provided on the suspension belt 63 that suspends the weight W so that the vertical movement strokes of the first and second gun units 10 and 20 can be adjusted according to the vertical movement of the weight W.

Sandblasting method:
As shown in FIG. 1, the first and second rollers 31 and 32 are driven to rotate, so that the first surface B1 and the second surface B2 of the metal plate B move in the horizontal direction H along a vertical surface. Is done.
While the metal plate B is moved, the first and second guns G1 and G2 shown in FIG. 2 are kept facing each other, and the first and second guns G1 and G2 are synchronized vertically. Then, while reciprocating, the abrasive S is injected from the first and second guns G1, G2.

That is, the metal plate B is transported in the transport direction H1 with the rollers 30 of the first and second rollers 31 and 32 shown in FIG. 1 sandwiching both surfaces B1 and B2 of the metal plate B.
At the same time, as shown in FIG. 2, the abrasive S is sprayed onto both surfaces B1 and B2 of the metal plate B from the first and second guns G1 and G2 connected to the air passage 11 and the cutting material passage 12. As described above, since the first gun G1 and the second gun G2 are synchronized so as to be directly opposite each other, the location where the abrasive S is injected onto the first surface B1 of the metal plate B, and the injection The location where the abrasive S is injected onto the second surface B2 on the back side of the location coincides.

  When the second gun unit 20 is raised by the driving device 4, the first gun unit 10 is raised in synchronization with the rise of the second gun unit 20. On the other hand, when the second gun unit 20 is lowered, the first gun unit 10 is lowered in synchronization with the second gun unit 20. Therefore, the location where the abrasive material S is always injected onto the first surface B1 of the metal plate B coincides with the location where the abrasive material S is injected onto the second surface B2 on the back surface side of the injection location.

  As described above, the first and second gun units 10 and 20 are repeatedly raised and lowered, and the metal plate B is transported in the transport direction H1 (FIG. 1) by the first and second rollers 31 and 32 shown in FIG. Thus, the sandblasting is simultaneously performed on both surfaces B1 and B2 of the metal plate B.

  On the other hand, the abrasive S colliding with the metal plate B is guided by the inclined surface 2d of the grinding chamber 2 and gathers at the lower center of the grinding chamber 2 and again passes through the cutting material passage 12 and from the first and second guns G1 and G2. Be injected.

  In addition, the lower part of the grinding chamber 2 is formed so as to be detachable. The lower part of the grinding chamber 2 is removed to remove the abrasive S, and the type of the abrasive S can be changed by replacing with a different type of abrasive S. Can be changed.

  The present invention can be applied to sandblasting.

4: Driving device 31: First roller 32: Second roller B: Metal plate B1: First surface B2: Second surface G1: First gun G2: Second gun H: Horizontal direction S: Grinding material Za: Vertical axis

Claims (2)

A sandblasting apparatus suitable for sandblasting both a first surface of a metal plate and a second surface opposite to the first surface,
A pair of first rollers that sandwich the metal plate and rotate around a vertical axis to feed the metal plate downstream;
A pair of second rollers that sandwich the metal plate and rotate around a vertical axis to feed the metal plate downstream;
A first gun for injecting abrasive onto the first surface of the metal plate in a region between the first roller and the second roller;
A second gun which is provided at a position directly opposite the first gun and injects abrasives onto the second surface of the metal plate in a region between the first roller and the second roller;
A sandblasting apparatus comprising: a driving device that reciprocally moves the first gun and the second gun in a vertical direction. A sandblasting method performed using the sandblasting apparatus according to claim 1,
Rotating the pair of first and second rollers to move the metal plate in a horizontal direction with the first and second surfaces of the metal plate along a vertical plane; and
While moving the metal plate, keeping the first and second guns facing each other, and reciprocating the first and second guns synchronously up and down, Injecting abrasive from the first and second guns;
A sand blasting method for applying sand blasting to predetermined regions of the first surface and the second surface.

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