JP2001121401A - Barrel polishing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent environmental pollution and to surface-finish a workpiece at a low cost by repeatedly using polishing fluid. SOLUTION: Drainage discharged from a rotary drum 3 in which polishing fluid, polishing stones and workpiece and charged is sorted into the polishing fluid, the polishing stones and the workpiece with the use of sorting pans formed at their bottoms with holes. The polishing fluid filtered through a filter storage part 6 is reserved in a reservoir pan 5, and is then sucked up by a gear pump and supplied into the drum 3 again.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a barrel polisher, and more particularly to a barrel polisher capable of preventing environmental pollution and realizing a low-cost surface finish of a member to be processed.

[0002]

2. Description of the Related Art Barrel polishing is known as a surface finishing technique for relatively small metal members such as nuts and bolts. Barrel polishing removes "burrs" after various types of machining,
It can be widely applied to surface finishing, deburring and deburring of pressed products, rounding of corners, polishing of surfaces, deburring after die casting and forging, polishing finishing, etc. And is very useful as a surface finishing technique capable of obtaining a uniform finish with little variation.

[0003] To perform barrel polishing, a barrel polishing machine having a rotary drum is used. When polishing is performed using a barrel polishing machine, a member to be processed is thrown into the drum together with the polishing stone from an opening provided in the drum. Then, a desired surface finish is applied to the object to be polished by the contact between the member to be processed and the polishing stone accompanying the rotation of the drum. Furthermore, when performing barrel polishing, not only the member to be processed and the polishing stone, but also a polishing liquid is introduced into the drum for the purpose of cutting, cleaning, degreasing, rust prevention and the like. As the polishing liquid, one having a component according to the use is appropriately used.

[0004]

In the above-described barrel polishing machine, after the processing of the member to be processed is completed, the member to be processed is directly discharged from the opening to the outside of the polishing machine such as the ground together with the polishing stone and the polishing liquid. Is done. Then, only the processing target member and the polishing stone are manually collected, and the polishing liquid is discarded as it is. Therefore, although the polishing stone can be reused, the polishing liquid cannot be reused, and each time polishing is performed, a large amount of polishing liquid needs to be newly used, thereby causing environmental pollution and processing by the polishing liquid. There is a problem that the surface finishing of the target member cannot be performed at low cost. In particular, when the number of members to be processed is relatively small, the cost of the polishing liquid per one member to be processed becomes too high.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a barrel polishing machine capable of using a polishing liquid a plurality of times to prevent environmental pollution and realize a low-cost surface finish of a member to be processed.

[0006]

In order to achieve the above object, a barrel polishing machine according to claim 1 comprises a rotary drum into which a polishing liquid, a polishing stone, and a member to be processed are charged; A discharge means for separating the discharged liquid of the polishing liquid into a polishing liquid, a member to be processed, and a polishing stone, and a liquid sending means for sending the polishing liquid separated by the separation means to the drum. It is assumed that.

According to the first aspect, the discharged material from the drum is separated into the polishing liquid, the member to be processed and the polishing stone by the separating means, and the separated polishing liquid is sent to the drum by the liquid sending means. The liquid can be reused without being discarded every time the processing target member is processed.
Therefore, environmental pollution due to a large amount of polishing liquid being discarded can be prevented, and the surface finish of the member to be processed can be realized at relatively low cost.

Further, the barrel polishing machine according to a second aspect of the present invention is characterized in that the barrel polishing machine further comprises a filtering means for filtering the polishing liquid.

According to the present invention, since a polishing means is further provided for filtering the polishing liquid, contamination including small pieces such as "burrs" removed from the member to be processed and included in the polishing liquid is provided. The object can be removed from the polishing liquid. Therefore, even when the polishing liquid is used repeatedly, the polishing liquid can always be kept free of impurities, and it is possible to prevent the impurities from damaging the object to be treated. Can be.

Further, since a part of the components contained in the polishing liquid can be removed from the polishing liquid by the filtration means, it is possible to prevent the liquid sending means from being adversely affected by the components contained in the polishing liquid. The filtering means may be provided integrally with the separating means.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic front view of a barrel polishing machine according to the present embodiment. FIG. 2 is a side view thereof. Also,
FIG. 3 is a plan view of a sorting pan in the barrel polishing machine of FIG. A barrel polishing machine 1 shown in FIG. 1 includes a support frame 2 in which steel materials are combined vertically and horizontally so that the outer shape is a rectangular parallelepiped,
A drum (barrel) 3 into which a member to be processed such as a screw or a nut is charged together with a polishing stone and a polishing liquid. At the top of the support frame 2, a flat plate (not shown) is provided for disposing various members described later.

The drum 3 has a hexagonal prism shape, and a support shaft 11 projects from both sides from the center thereof. The support shaft 11 is
Both ends are supported by the support frame 2 so as to be rotatable. A belt wheel 12 is mounted near the outer end of one of the support shafts 11. The support shaft 11 is the belt wheel 1
It can rotate in conjunction with 2.

In addition, one of the six side surfaces of the drum 3 has an input port 33 for inputting and removing the member to be treated, the polishing liquid and the polishing stone, and an input port 3.
A lid 32 for closing 3 is provided. Lid 32
When the cover tightening handle 34 provided to project from the cover 32 is rotated in a predetermined direction, a cover lock mechanism (not shown)
Is fixed to the drum 3 and when the lid tightening handle 34 is rotated in the reverse direction, the lock of the lid 32 is released and the lid 32 can be removed.

The drum 3 is made of steel. Inside the drum 3,
A sound absorbing material layer such as moltfrene and a synthetic rubber layer are attached with screws or an adhesive. As a result, noise generated when the drum 3 rotates can be reduced.

On a flat plate provided on the top of the support frame 2,
A motor 14 serving as a drive source of the drum 3; a speed reducer 1 for reducing the rotation speed transmitted from the motor 14 at a constant rate
8, and a tension pulley 16 for connecting the motor 14 and the speed reducer 18 are arranged. The motor 14 and the tension pulley 16 are connected via a belt wheel 14 a and a belt 15 provided on an output shaft of the motor 14. The tension pulley 16 and the speed reducer 18 are connected via a belt wheel 18 a and a belt 17 provided on an input shaft of the speed reducer 18. Belt 15 and belt 1
Reference numeral 7 is stretched around two different coaxial belt wheels (not shown) in the tension pulley 16. The tension pulley 16 is provided with a lever 16a,
By operating the lever 16a, the diameter ratio of the two pulleys in the tension pulley 16 is changed.
Therefore, it is possible to control the rotation speed transmitted from the motor 14 to the speed reducer 18 by operating the lever 16a.

A belt wheel 20 is provided on the output shaft of the speed reducer 18, and a belt 22 is stretched over the belt wheel 20 and the belt wheel 12 attached to the support shaft 11.
Thereby, the rotation of the motor 14 is transmitted to the support shaft 11 via the tension pulley 16 and the speed reducer 18. Therefore, it is possible to rotate the drum 3 by driving the motor 14,
It can be changed as appropriate by manipulating a. Although not shown, the belt wheel 20 of the support frame 2 is not shown.
A safety fence made of perforated metal is arranged near the side surface of the side in order to prevent danger caused by the rotation of the belt wheels 12, 20.

On the front surface of the support frame 2, a switch section 24 including a switch for turning on and off the motor 14 is provided. The switch unit 24 includes the motor 1
A timer for setting the drive time of No. 4 may be provided.

The barrel polishing machine 1 shown in FIG. 1 has a separating pan 4 supported by a support frame 2 below a drum 3.
And a storage pan 5 supported by the support frame 2 below the separation pan 4. The sorting pan 4 has a rectangular parallelepiped shape without an upper wall, and is supported by the support frame 2 so as to be able to be pulled out forward. The support frame 2 is provided with a door roller (not shown) that comes into contact with the bottom surface of the separation pan 4 in order to easily pull out the separation pan 4. In addition, a projection 4a is provided on the front surface of the separation pan 4 so that the operator can grip the separation pan 4 when pulling it out.

As shown in FIG. 3, a large number of holes 42 having a diameter of about 10 mm are provided on the bottom surface of the separation pan 4.
The hole 42 is formed smaller than the processing target member and the polishing stone among the processing target member, the polishing stone and the polishing liquid discharged from the drum 3, and only the polishing liquid can pass through the hole 42.

On the outside of the bottom surface of the separation pan 4, a filter housing 6 is supported so as to be able to be pulled out forward. The filter housing section 6 houses a pad-shaped nylon filter (pop-up sheet) that can filter the polishing liquid to remove impurities and partially remove components contained in the polishing liquid.

The storage pan 5, like the separation pan 4, has a rectangular parallelepiped shape without an upper wall, and is supported by the support frame 2 so as to be drawn out forward. On the front surface of the storage pan 5, a protrusion 5a is provided for the operator to grip when the storage pan 5 is pulled out. The polishing liquid that has passed through the separation pan 4 and the filter storage unit 6 is stored in the storage pan 5 and is reused as described later.

The support frame 2 has two hose connection portions 44,
45 are provided. The hose connection part 44 is connected to the pipe 4
7 is connected to the inlet side of a gear pump 8 installed on a flat plate provided on the top of the support frame 2. In the middle of the pipe 47, a filter 7 having a 100 μm filter similar to the filter housed in the filter housing 6 is provided. The gear pump 8 is driven to rotate by a motor 9 connected thereto via a belt and a pulley (both not shown). Further, the hose connection part 45 is connected to the outlet side of the gear pump 8 via a pipe (not shown). On the front surface of the support frame 2, a switch unit 25 including a switch for turning on and off the motor 9 is provided.

Next, the operation of the barrel polishing machine 1 of the present embodiment configured as described above will be described.

First, when surface finishing is performed on a member to be processed by using the barrel polishing machine 1, the member to be processed is put into the drum 3 together with a polishing stone and a polishing liquid according to the purpose. After the lid 32 is locked, the switch unit 2
Press switch 4 to rotate motor 14 and switch lever 1
By adjusting 6a, the drum 3 is rotated at a predetermined rotation speed for a predetermined time.

After the processing of the member to be processed is completed by rotating the drum 3 for a predetermined time, the lid 32 is removed,
The drum 3 is manually moved to a predetermined position, and the processing target member in the drum 3 is discharged together with the polishing stone and the polishing liquid.
All the effluent is given to the sorting pan 4. Of the effluent, only the polishing liquid passes through the holes 42. The polishing liquid that has passed through the holes 42 is stored in the storage pan 5 after impurities and the like are removed by the filter of the filter storage unit 6. Since the processing target member and the polishing stone remain in the separation pan 4 as they are, the separation pan 4 can be pulled out, and these can be sorted and taken out. The removed abrasive stone is reused when performing the next surface finishing.

When performing the next surface finishing,
One end of a hose (not shown) made of vinyl chloride is connected to the hose connection portion 44, and the other end of the hose is located in the storage pan 5. In addition, one end of another hose (not shown) is connected to the hose connection portion 44, and the other end of the hose is located inside the drum 3. In this state, when the switch of the switch section 25 is operated to drive the motor 9, the gear pump 8 moves the storage pan 5.
Sucks up the polishing liquid stored in the tank. The polishing liquid is supplied from the hose connection 44 to the drum 3 through the pipe 47, the filter 7, the gear pump 8, the hose connection 45, and the like.

Then, a new member to be treated and a polishing stone are charged into the drum 3, and a polishing liquid (or a powdery polishing medium) is also charged into the drum 3 when replenishment is necessary. Thereafter, the drum 3 is similarly rotated to finish the surface of the member to be processed.

After the polishing liquid has been used several times, the filter stored in the filter storage section 6 and the filter 7 is taken out, and impurities such as burrs and components contained in the polishing liquid are washed. It is preferable to remove it. At this time, since the filter storage unit 6 is supported by the support frame 2 so as to be able to be pulled out, it is possible to easily perform a process such as cleaning the filter.

As described above, according to the present embodiment, the discharge from the drum 3 is separated into the polishing liquid, the processing target member and the polishing stone by the separation pan 4, and the separated polishing liquid is separated by the gear pump 8 into the drum 3. Therefore, the polishing liquid can be reused without being discarded every time the processing target member is processed. Therefore, environmental pollution due to a large amount of polishing liquid being discarded can be prevented, and the surface finish of the member to be processed can be realized at relatively low cost.

Further, the barrel polishing machine 1 according to the present embodiment
Since the filter housing 7 and the filter 7 are provided between the separation pan 4 and the gear pump 8 for storing a filter for filtering the polishing liquid, the filter is removed from the member to be processed and included in the polishing liquid. Impurities including small pieces such as the resulting "burrs" can be removed from the polishing liquid in the filter housing 6 and the filter 7. Therefore, even when the polishing liquid is used repeatedly, the polishing liquid can always be kept free of impurities, and it is possible to prevent the impurities from damaging the object to be treated. Can be.

Further, a part of the components contained in the polishing liquid can be removed from the polishing liquid by the filters contained in the filter storage section 6 and the filter 7, so that the components contained in the polishing liquid are condensed and solidified. It is possible to prevent the operation from becoming difficult.

Further, the separation pan 4 is supported by the support frame 2 below the drum 3 and the storage pan 5 is supported by the support frame 2 below the separation pan 4, so that the discharge from the drum 3 can be easily removed. The polishing liquid can be supplied to the separation pan 4, and the polishing liquid separated by the separation pan 4 is smoothly stored in the storage pan 5. Moreover, the entire polishing machine 1 can be made compact and easy to handle.

Although a preferred embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various design changes can be made. For example, the separation pan and the storage pan may be integrally formed.
Alternatively, the polishing liquid separated by the separation pan 4 may be directly guided to the hose without providing the storage pan 5. In addition, the shape of the drum 3 is not limited to a hexagonal prism, but can be various shapes such as an octagonal prism. In addition, a filter may be spread over the bottom surface of the separation pan 4, or various changes may be made within the scope described in claims.

[0035]

As described above, according to the first aspect, the discharge from the drum is separated into the polishing liquid, the member to be processed and the polishing stone by the separating means, and the separated polishing liquid is supplied by the liquid sending means. Since the polishing liquid is sent to the drum, the polishing liquid can be reused without being discarded every time the processing target member is processed. Therefore, environmental pollution due to a large amount of polishing liquid being discarded can be prevented, and the surface finish of the member to be processed can be realized at relatively low cost.

According to the second aspect of the present invention, since the apparatus further comprises a filtering means for filtering the polishing liquid, impurities including small pieces such as "burrs" removed from the member to be processed and included in the polishing liquid are included. The object can be removed from the polishing liquid. Therefore, even when the polishing liquid is used repeatedly, the polishing liquid can always be kept free of impurities, and it is possible to prevent the impurities from damaging the object to be treated. Can be. Further, since a part of the components contained in the polishing liquid can be removed from the polishing liquid by the filtration means, it is possible to prevent the liquid sending means from being adversely affected by the components contained in the polishing liquid.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a barrel polishing machine according to an embodiment of the present invention.

FIG. 2 is a schematic side view of a barrel polishing machine according to one embodiment of the present invention.

FIG. 3 is a plan view of a sorting pan in the barrel polishing machine of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Barrel grinder 2 Support frame 3 Drum 4 Separation pan 5 Storage pan 6 Filter storage part 7 Filter 8 Gear pump 9 Motor

Claims (2)

[Claims] 1. A rotary drum into which a polishing liquid, a polishing stone, and a processing target member are charged, and a separation unit that separates discharge from the drum into a polishing liquid, a processing target member, and a polishing stone. And a liquid sending means for sending the polishing liquid separated by the separating means to the drum. 2. The barrel polishing machine according to claim 1, further comprising a filtering means for filtering the polishing liquid.