JPS5950468B2 - Barrel type grinding device - Google Patents

Description

[Detailed description of the invention] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a barrel-type grinding device.

When cleaning is performed without applying reverse motion to the object to be polished in the cleaning room, controlling the reverse motion depending on the material and shape of the object to be polished quickly achieves a uniform and reliable cleaning effect. It turned out to be extremely important to do so.

Proposals have been made to improve the reversal motion characteristics of the object to be polished by arranging protrusions with various shapes on the support surface of the object to be polished. If the shape of the object to be polished changes, the reversal motion characteristics may be adversely affected.

The applicant of the present invention is Japanese Patent Application No. 50-156020
In Japanese Patent No. 8-50829), the cleaning chamber is formed into a substantially cylindrical shape and is selectively swung between a carry-in position, a grinding position, and a carry-out position in which the axes thereof make predetermined inclination angles with respect to the vertical line. A barrel comprising a rotation drive device and a projection device provided in relation to the cleaning position of the cleaning chamber, and having a sawtooth groove on the inner circumferential wall of the cleaning chamber and a corrugated uneven portion on the bottom wall thereof. We are proposing a mold cleaning device.

This makes it extremely easy to carry the object to be polished into and out of the cleaning chamber, but depending on the object to be polished, the movement of the object may be hindered by the grooves and uneven parts on the inside of the cleaning chamber. Also, the life of the cleaning chamber is short due to the wear of the uneven parts, and the fact that the object to be polished is held at a predetermined inclined angle position in the cleaning chamber and the object to be polished is rotated in the cleaning chamber. It wasn't always smooth.

SUMMARY OF THE INVENTION An object of the present invention is to provide a grinding device that improves the drawbacks of the conventional grinding devices described above. a rotation device that rotates the cleaning chamber, a swing device that rotates the cleaning chamber around an axis in a direction that crosses the axis, and a cleaning device that projects an abrasive material onto an object to be polished housed in the cleaning chamber. A barrel-type polishing device is provided, which includes a material projection device and a lining material is convertably attached to the side and bottom surfaces of the inner wall of the cleaning chamber.

Since the lining material is attached in a replaceable manner, it is possible to replace the inner surface shape with a different one depending on the object to be polished, and furthermore, it is possible to replace the lining material when it is worn out due to use. Therefore, the life of the cleaning device can be significantly extended, and optimal work can be performed for each object to be polished.

Furthermore, the present invention provides a rotation device that rotates a substantially cylindrical cleaning chamber that accommodates an object to be polished around its axis, and a rocking device that rotates the cleaning chamber around an axis that crosses the axis. and an abrasive material projection device for projecting an abrasive material onto an object to be polished housed in a grinding chamber, and a lining material is replaceably attached to the side and bottom surfaces of the inner wall of the cleaning chamber. When the abrasive material projection device is in operation, the rocking device causes the cleaning chamber to perform a rocking motion in which its axis changes reciprocatingly within a predetermined angle range with respect to the vertical line, thereby moving the object to be polished. To provide a barrel-type polishing device, which is provided with a control device for swinging the polishing chamber to a loading/unloading position beyond the above-mentioned angular range when loading/unloading.

In contrast to the aforementioned invention of the present applicant, this invention is configured such that the cleaning chamber is reciprocated in a predetermined angular range at the cleaning position, so that the angular range and the center of the oscillation are By changing the angular position, it is possible to arbitrarily control the reversal movement of the object to be polished in the cleaning chamber, making it possible to easily handle objects with complex shapes that are difficult to clean with conventional polishing equipment. Can perform cleaning work.

Embodiments of the invention will now be described with reference to the accompanying drawings.

In FIG. 1, a substantially cylindrical cleaning chamber 2 is supported on a stand 5 by ball bearings 6 so as to be rotatable about a vertical axis.

The outer ring of the ball bearing 6 is fixed to the stand 5, and the inner ring is fixed to the cleaning chamber 2.

An inner gear 11 is provided coaxially inside the inner ring.
A gear 10 meshing with a gear 11 is attached to a shaft 9 driven by an electric motor 7 and a speed reducer 8, and rotation of the electric motor 7 causes the cleaning chamber 7 to rotate around its longitudinal axis.

The frame 5 is supported by a swing arm 12, which is swingably attached to the base of the cleaning device by shafts 13, 13', and the shaft 13 is driven by an electric motor 14 and a speed reducer 15.

In FIG. 2 showing a schematic side view of the grinding device, the grinding chamber 2 is located at a position where its longitudinal axis X-X is inclined at approximately 35 degrees with respect to the vertical line, and its upper opening is a centrifugal projection Machine 3
Accepts abrasive material projected from the

(The flow of the abrasive material is shown by the dashed arrow) The abrasive material projected into the cleaning chamber cleans the object to be polished, and then the abrasive material is released into the opening 16 provided in the side wall of the cleaning chamber 2 (details will be described later). is discharged from
The abrasive material is collected and separated by the abrasive material collection and separation device 4.4 and sent to the projector 3 again.

When projecting the abrasive material, the cleaning chamber 2 is moved around the axis 13 in the A-A direction by a swinging device (14, 15 in FIG.
It reciprocates in the angular range of degrees, and at the same time the axis X-X is
rotate around.

The angular range of the rocking motion, its center position, rocking speed, speed of the rotational motion, etc. are appropriately selected depending on the shape, material, etc. of the object to be polished, and are controlled by a control device (not shown).

Of course, a jet projector may be used instead of the centrifugal projector 3.

The carry-in device 20 and the carry-out device 21 are installed, for example, at the positions shown in the figure, and during carry-in and carry-out, the angle between the axis line
The loading and unloading angles shall be inclined by over 50° (35°±15°).

This allows the loading and unloading work to be carried out on a line.

Figures 3 and 4 are top views of the cleaning chamber 2 and the line R in Figure 3.
FIG. 10 is a cross-sectional view taken along line 10S2.

A hard rubber lining material 22 is attached to the inner wall of the casing, which has a substantially cylindrical side wall 18 and a bottom wall 19, and a large number of bolts 17 and lining material 2.
2 (only one set is shown in FIG. 4).

In the illustrated embodiment, the upper half of the lining 22 has a serrated inner surface with a large number of longitudinally extending protrusions 24 and grooves 25, and the lower half of the lining 22 has two protrusions OR1,
It has a bottom surface consisting of four slopes 26, 27, 28, 29 defined by OR2 and two concave edges O81, O82.

Bottom position S1. Adjacent to S2, an opening 16 and a number of small holes 16' passing through the side wall 18 of the housing are provided, from which the abrasive material projected into the cleaning chamber is discharged to the outside of the cleaning chamber.

The opening 16 may be slit-shaped.

Bottom surface 26. 27. 28. A relatively large space, indicated by the numeral 30, is left between 29 and the bottom wall 19 of the housing, although a suitable core or support may be interposed between the housing and the lining.

Serrated grooves 24, 25, R10R2 after protrusion, concave ridge 81
It is assumed that 0S2 has a suitable roundness.

It is desirable that the protrusion 24 has an angle of about 150°.

Figures 5 and 6 show modified examples of the lining material shown in Figures 3 and 4, and the bottom surface of the lining material is also made into a serrated surface with many protrusions R and many recesses S. .

In the figure, 16'' is a hole that communicates the outlet 16' with the opening 16 provided in the side wall 18.

The inner surface shape of the lining material is not limited to the illustrated embodiment, and can be determined as desired.

The reversal movement of the object to be polished depends not only on the internal shape of the grinding chamber but also on the shape and weight of the object to be polished, the inclination angle of the axis X-X, the angular range of the rocking movement, and the rotation around the axis X-X. Since it changes depending on speed, etc., a desired reversal motion state can be created by changing these factors in combination.

According to the present invention, it is possible to provide a reversal motion that is adapted to the shape and quality of the object to be polished, and it is possible to efficiently achieve a uniform and effective cleaning action. It is also possible to carry out special cleaning operations using, etc.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing, partially in section, the main parts of a polishing device shown as an embodiment of the present invention. FIG. 2 is a schematic diagram showing the overall arrangement of the cleaning device. FIG. 3 is a top view showing the cleaning room. FIG. 4 is a sectional view taken along line R10S2 in FIG. 3. FIG. 5 is a top view showing a modification of FIG. 3. FIG. 6 is a longitudinal sectional view of the cleaning chamber shown in FIG. 5. 2 is a cleaning room, 5 is a stand, 6 is a ball bearing, 11 is an inner gear, 10 is a gear, 8 is a reducer, 7 is an electric motor of the rotation device, 12 is a swing arm, 13, 13' are shafts, 15 14 is a reduction gear, and 14 is an electric motor of the swinging device. 3 is an abrasive material projector, 4 is an abrasive material collection and separation device, 20 is a carry-in device, and 21 is a carry-out device. 18 is a side wall of the cleaning chamber housing, 19 is a bottom wall, 22 is a lining material,
17 is a mounting bolt, 23 is an embedded nut, 24 is a protrusion, 25 is a groove, OR1, OR2 are protrusions, O81°O
82 is the bottom surface after recessing, 16 is an opening provided in the side wall 18, and 16' is a discharge hole provided in the lining material 22.

Claims (1)

[Scope of Claims] 1. A rotation device that rotates a substantially cylindrical cleaning chamber that accommodates an object to be polished around its axis, and a rotation device that rotates the cleaning chamber around an axis that crosses the axis. a rocking device;
It is equipped with an abrasive material projection device for projecting an abrasive material onto the object to be polished housed in the grinding chamber, and a lining material is replaceably attached to the side and bottom surfaces of the walls of the cleaning chamber. Features a barrel-type grinding device. 2. A rotation device that rotates a substantially cylindrical cleaning chamber that accommodates an object to be polished around its axis; a rocking device that swings the cleaning chamber around an axis that crosses the axis;
and an abrasive material projection device for projecting an abrasive material onto an object to be polished housed in the cleaning chamber, and a lining material is replaceably attached to the side and bottom surfaces of the walls of the cleaning chamber, and the above-mentioned When the abrasive material projection device is activated, the rocking device performs a rocking motion in which the axis of the abrasive material reciprocatingly changes within a predetermined angular range with respect to the vertical line in the cleaning chamber. A barrel-type polishing device characterized in that a control device is provided for swinging the polishing chamber to a loading/unloading position beyond the above-mentioned angular range at the time of loading.