JPS5854952B2 - Shot blasting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shot blasting device which has good workability and is capable of performing polishing with high efficiency. The present invention relates to a shot blasting device in which stations having different functions are formed.

The object to be polished is suspended movably from an endless mole rail, and is suspended from multiple hanging devices connected at regular intervals by an endless chain in an endless manner, and then transported into a polishing room equipped with a shot projector. A device that performs sequential cleaning by carrying out the cleaning from the opposite side of the cleaning chamber is generally known as a banger blast device.

Due to the nature of this type of equipment, the two doors for loading and unloading the material to be polished must be tightly sealed. It becomes inevitable to open and close the door every time.

There is also the disadvantage that, even after finishing rough grinding, if the shot projector has not completely stopped, or if a large amount of dust is generated, it is necessary to wait for a while until the material to be ground is removed.

As described above, conventional devices not only require a structure to ensure a tight seal, but also require troublesome operations and have low cleaning efficiency.

The present inventors have already developed a shot blasting device that is easy to operate, has high cleaning efficiency, and does not require a strict sealing structure. As described above, a structure formed around the above-mentioned vertical axis has been completed (see Japanese Patent Laid-Open No. 53-25986).

The shot blasting apparatus described above is of a type in which the object to be polished is suspended from a rotatable hook provided within the apparatus, or the object to be polished is mounted on a rotatable cart.

If the shot blasting device with the above structure can be applied to the banger blasting device already mentioned, it will be possible to suspend the object to be polished at a location somewhat distant from the shot blasting device, which will further improve operability. That is clear.

Based on this knowledge, the inventors of the present invention conducted extensive research in order to obtain a shot blasting device that is easy to operate and can perform highly efficient cleaning, and as a result, they were able to perfect the device of the present invention described below. .

That is, the present invention provides a shot blasting apparatus in which three or more stations are formed around the vertical axis, each having a different function at a specific position during rotation of the vertical axis, and the ceiling wall of the station is connected to the vertical axis. The cabinet is divided into a rotating ceiling wall that rotates around the center and a fixed ceiling wall in the form of a road shoulder facing around the rotating ceiling wall, and a side wall is attached perpendicularly to the outer edge of the fixed ceiling wall so that one side of the cabinet is open along with the floorboard of the station. On the other hand, a number of rotating partition walls corresponding to the stations are mounted perpendicularly to the lower surface of the rotating ceiling wall and radially to the vertical axis, and the rotating partition walls are attached to the fixed ceiling wall, side wall, and floor plate at specific positions during rotation. By making contact, one or more open chambers and two or more sealed chambers including a projection chamber equipped with a shot projector on the side wall are formed, and the object to be polished can circulate in each chamber to be formed. The present invention is characterized in that a mechanism is provided for a suspension tool for suspending the object to be polished to enter between the two ceiling walls.

The apparatus of the present invention will be explained in more detail below based on the drawings.

That is, FIG. 1 is a front view showing a specific device of the present invention, FIG. 2 is a simplified plan view of FIG. 1, and FIGS. 3 and 4 are A of FIG. -A' line, B-B'
FIG. 5 is a partial horizontal cross-sectional view taken along a line, and FIGS. 5 and 6 are enlarged vertical cross-sectional views showing the inside of the apparatus shown in FIG. 1, respectively.

Hood 1 indicates the cabinet of the shot blasting device;
The ceiling part is composed of a rotating ceiling wall 3 that is attached to a rotating vertical shaft 2 and rotates, and a fixed ceiling wall 4 in the shape of a road shoulder.In this embodiment, the vertical shaft 2 and the rotating ceiling wall 3 are 5
A plurality of partition walls 5 are installed radially at an angle of about 72 degrees to each other, and these partition walls 5 consist of a fixed ceiling wall 4, a side wall 6, and a floor plate 7, which constitute the cabinet 1 with an open surface. The contact portion 8 is composed of an elastic plate-like body so that it can come into contact with both at a specific position.

A shot projector 9 for cleaning is provided on the side wall 6 of the cabinet 1 opposite to the open part.

Further, above the ceiling of the cabinet 1, a part of the endless molar rail 10 is provided on an arc along almost the inner circumference of the fixed ceiling wall 4, and the other part of the molar rail that comes off from above the cabinet is shown in FIG. As shown, it is provided in a U-shape.

A notch 12 is provided in the rotary ceiling wall 3 at a position midway between adjacent partition walls so that the suspension tool 11 suspended from the mole rail 10 can enter between the two ceiling walls 3 and 4. .

A sprocket wheel 13 having a diameter slightly smaller than that of the rotating ceiling wall 3 is attached to the upper end of the vertical shaft 2 and engages with a chain connecting the hanging device 11, and four guide wheels 14. The chain is supported by 14'.

On the other hand, in FIGS. 1 and 2, reference numeral 15 is a drive device for the suspension tool 11 suspended from the mole rail 10, and one operation moves the suspension tool 11 one pitch in the direction of arrow A. When the sprocket wheel 13 is moved by the distance a) between the parts, the sprocket wheel 13 is simultaneously driven by the chain and its outer periphery rotates by the same distance a.

That is, in the case of this embodiment row, the sprocket wheel 13 rotates by % along with the rotating ceiling wall 3 and the partition wall 5.

Note that a rotating ceiling wall 3 and a partition wall 5 rotate around a vertical axis 2.
When the rotation stops, the cabinet 11 forms five stations 16, 17, 18, 19, 20 with the side walls 6, fixed ceiling wall 4, etc., as shown in FIGS. 2 and 4.

Two of the stations 16.20 thus formed are open chambers, 17.19 is a closed chamber, and 18 is a closed chamber or cleaning chamber with a shot projector 9 on the side wall.

A method for cleaning the object 21 to be polished using the apparatus shown in the drawings will be described below.

That is, the object to be polished 21 is brought into a space distant from the cabinet 1 and suspended from the empty hook 22 of the suspension tool 11 suspended from the mole rail 10.

The hanging tool is driven by the drive device 15, and the suspended object 21 to be polished is moved one pitch toward the cabinet as shown by arrow A.

The suspension tool 11 that suspends the object to be polished 21 that has reached the first station 16 in this manner moves in synchronization with the rotation of the rotating ceiling wall 3 by the next drive by the drive device 15, and rotates once on the ceiling. It is fitted into a notch 12 provided in the wall 3 and enters the second station 17, that is, the first sealed chamber.

This station 17 is connected to the adjacent third station 18
When grinding is carried out in the (grinding room), it functions as a buffer chamber to prevent shot, dust, etc. from leaking and scattering to the open surface of the cabinet, that is, the object loading station 16. , the object to be polished 21 will be waiting to be polished next.

Thereafter, the object to be polished 21 enters the third station 18 by % rotation of the rotary ceiling wall 3 by one drive of the drive device 15, and at the stop position, the gear 2 provided on the suspension tool 11
3 is meshed with a drive device 24 for rotating the hanging tool and is driven, and while rotating, shot is projected by the shot projector 9 and the tool is polished.

When the cleaning is finished, the next rotation by the drive device 15 separates the gear 23 of the suspension tool and the first drive device 24 for rotation, and the object to be polished stops rotating and is sent to the next fourth station 19. This station is also provided to perform exactly the same function as the second station, and is designed to prevent shots, etc. from leaking and scattering to the unloading station 20 during the next polishing of the object to be polished. The object to be polished 21 itself is placed on standby to be carried out.

When the object to be polished 21 moves to the fifth station for carrying out in the next rotation, the hanging tool 11 leaves the cutout 12 of the rotating ceiling wall.

Thereafter, the object to be polished 21 moves along the mole rail 10 as shown by the arrow in order to return to its original position, but is removed from the hook 22 at any stop position during this period.

When cleaning a large number of objects to be polished, for example, as shown in FIG. The operation of suspending the object to be polished at the position shown in is performed one after another, and the cleaning work is performed semi-continuously in accordance with the method described above.

On the other hand, fallen objects such as shot and sand projected during grinding fall into a hopper 27 and are carried out by a carry-out device 28, where they are separated into shot and other objects by a separation device (not shown), and the shot is transferred to the projector. It will be reused in 9th.

Further, dust generated during cleaning is discharged from the apparatus through a dust suction pipe 29 and collected in a separately installed dust collector.

The device shown in the drawings has a second closed chamber 18 as a cleaning chamber,
The first sealed chamber 1γ and the third sealed chamber 19, which are located before and after the object to be polished in the moving direction thereof, are each made into buffer chambers having a function to prevent powder particles such as shot from scattering to the outside. The system is equipped with an open chamber 16 for transporting objects to be polished into these chambers and an open chamber 20 for transporting them out of these chambers, and the total of the closed chambers and open chambers is 5. It has become.

This device of the drawings is of the most preferred embodiment from its functional point of view.

However, a structure in which the number of sealed chambers, particularly the number of buffer chambers, can be reduced as necessary is also in accordance with the spirit of the present invention.

Further, it is within the scope of the present invention to adopt a structure in which the number of cleaning chambers and buffer chambers is increased so that the apparatus can be manufactured easily.

That is, the structure can be such that the total number of chambers including open chambers is 3 to 8.

In the present invention, in order to seal the rotating ceiling wall 3 and the fixed ceiling wall 4, for example, as shown in the partial vertical cross-sectional view of FIG. Body 32.
It is effective to form an annular groove by the rotary ceiling wall 3 and to provide an annular plate body 34 to be inserted into the groove at the outer edge of the rotating ceiling wall 3. The sealing effect is strengthened.

Note that the outer periphery of the rotating ceiling wall of the device of the present invention has a notch for entering the suspension device, and as a seal for this portion, for example, as shown in FIG. 6, the suspension shaft 22 of the suspension device 11 ′
An example of this is to provide disks 35 and 36.

Furthermore, in the present invention, the rotating ceiling wall and partition wall are structured to rotate around the vertical axis 2 to form each of the above-mentioned rooms, and this and the fixed wall form a closed room. Therefore, the sealing method is not particularly limited.

i.e. rotating partition wall and fixed wall i.e. fixed ceiling wall,
To seal the side walls and floorboards, for example, see Figure 1, Figure 8.
The one shown in the figure is used.

FIG. 7 is a partial sectional view showing the rotary partition wall according to the present invention and a fixed state.

That is, in the drawing, an elastic plate-like body 8' such as a rubber plate is attached to the partition wall 5', and a square column 3 is attached to the fixed wall 6'.
0 is attached, and when the partition wall 5' comes to a predetermined position as shown in the opening of FIG. 5' and the fixed wall 6' are sealed.

Of course, the same effect can be expected even if the prism 30 is not attached in the drawing.

Further, FIG. 8 is a partial cross-sectional view showing another fixed/rotational partition wall and a fixed wall of the device of the present invention. 8 is attached, and when the partition wall 5 rotates 5 times, the first
As shown in the figure, the partition wall 5 and the fixed wall 6 are sealed by the elasticity of the plate member 8.

By appropriately combining the apparently simple sealing mechanisms described above, the rotating chamber forming elements, i.e., rotating ceiling wall, partition wall, and fixed chamber forming elements, i.e., side walls, fixed ceiling wall, Can be sealed with floorboards.

Further, in the present invention, it is preferable that the floor plate has a structure in which part or all of the floor plate is made of a grid so that powder particles such as shot that fall during polishing are allowed to fall below the floor surface.

In addition to the above, a shot projector or a device for discharging fallen objects installed under the floor surface is capable of sufficiently cleaning objects to be polished that are carried into the apparatus of the present invention.
Further, there are no particular limitations on the specific mechanism, its type, installation method, etc., as long as the generated powder and granules can be carried out of the apparatus without interruption.

That is, when the apparatus of the present invention cleans a large number of objects to be polished, it can achieve its purpose in a much shorter time than the conventional apparatus.

In conventional Nongerplast equipment, which consists of only one box-shaped cleaning chamber with doors at the front and back, the doors at the loading and unloading entrances are opened to remove the polished items. At the same time, the time it takes to bring in a new object to be polished and close both doors is completely wasted.In contrast, with the device of the present invention, all of the time except for the short period of rotation in the case of the embodiment is completely wasted. This is because the cleaning work is performed and the efficiency of cleaning can be significantly improved.

In addition, in the apparatus of the present invention, buffer chambers are provided before and after the cleaning chamber in the direction of movement of the object to be polished, so even if the sealing mechanism of the wall that partitions each chamber is not strict, the cleaning can be carried out smoothly. Even if shot scattered within the polishing chamber were to leak into the buffer chamber, it can be prevented from leaking into the open chamber, and has the advantage of not requiring a strict sealing mechanism unlike conventional devices.

Furthermore, in the present invention, the upper end of the suspension shaft for suspending the object to be polished is supported by the mole rail, and the lower end is supported by a notch drilled in the peripheral edge of the rotating ceiling, so that the object to be polished can be When the object is placed in the cabinet, it is supported at two points, and even if the object to be polished is shaking before it is brought into the cabinet, the shaking of the object can be suppressed, and therefore the cabinet partition Shotblasting can be performed accurately and efficiently without damaging walls.

Furthermore, in the apparatus of the present invention, the object to be polished, which is suspended from the mole rail and moves, enters the box-shaped cleaning chamber through one entrance and moves in a straight line to the opposite side. Unlike exiting from the exit, the product is transported out in the same direction as the entry path by making a U-turn inside the multi-chamber cabinet, which has the advantage that the equipment area of the entire device can be rather small.

Furthermore, since the object to be polished can be re-suspended at a location away from the cabinet, the degree of freedom in work is increased and work efficiency can be significantly improved.

For these reasons, the device of the present invention does not require a complicated opening/closing door like conventional devices, can use a simple sealing mechanism, requires less floor space for installation, and is easy to operate. It is also highly efficient and easy to manufacture and maintain.

Therefore, it is considered to be a shot blasting device with extremely excellent performance.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a simplified plan view of FIG. 1, and FIGS. 3 and 4 are A-A in FIG. 1, respectively. FIG. 5 is a partial horizontal sectional view taken along lines ' and BB', and FIGS. 5 and 6 are enlarged longitudinal sectional views showing the inside of the apparatus of FIG. 1. Furthermore, FIGS. 7 and 8 are partial cross-sectional views of other embodiments of the present invention. 1... Cabinet, 2... Rotating vertical axis, 3... Rotating ceiling wall, 4... Fixed ceiling wall, 5, 5', 5// -・・・Partition wall, 6
, 6', 6//... side wall, 8, 8', 8/
/...Elastic plate-like body, 9...Projector, 1
0...Mole rail 11...Hanging device, 1
6.20...Open room, 17-19...
Closed room.

Claims (1)

[Claims] 1. An opening is provided in one side wall for carrying in and out the object to be polished. One side of an endless conveyance device that suspends and conveys the object to be polished into each compartment of the cabinet, which has a partition wall that divides the interior of the cabinet integrally suspended radially around the vertical axis on the lower surface of the cabinet. A shot blasting apparatus characterized in that a folded bent part is provided above the rotating ceiling, and the other folded part is provided spaced apart from the outside of the cabinet.