JPH0642058U - Centrifugal flow barrel sander - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a centrifugal flow barrel polishing machine in which damage to a seal member and damage to a bearing due to a sludge-like polishing liquid leaking down into an outflow passage is eliminated. [Structure] A bearing portion 8 is formed in a central portion of a holding frame 4 in which a rubber liner 7 is lined on a side wall portion 6, and a bearing 1 is formed on the bearing portion 8.
0 and a rubber liner 17 lined with a sealing member 16 between them so as to be horizontally rotatably supported with an interval serving as an outflow passage 15 for the polishing liquid flowing from the gap between the rubber liners 7 and 17 between them. In the centrifugal fluidized barrel sanding machine, the seal member 16 of the bearing portion 8 from the outflow passage 15 is provided.
A seal cover 22 for blocking the polishing liquid flowing inward is provided so as to project from the boss portion 13 side of the dish-shaped bottom plate 12 toward the outflow passage 15, and the polishing liquid is provided in the vicinity of the bearing portion 8 of the holding frame 4. A cleaning nozzle 25 is provided to wash away the water.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a centrifugal flow barrel polishing machine for polishing the entire surface of a work by rotating a dish-shaped bottom plate constituting the bottom of a polishing tank horizontally and centrifugally flowing the work together with an abrasive material and a polishing liquid loaded. Is.

[0002]

[Prior art]

 A bearing is formed in the center of the holding frame with a side wall lined with a rubber liner and the bottom edge of the rubber liner is brought close to the bearing and the inner edge of the rubber liner is lined up. The centrifugal flow barrel polishing machine, which is horizontally rotatably supported by a bearing and a seal member at an interval corresponding to the polishing liquid outflow passage, is widely known from Japanese Utility Model Publication No. 58-136256. In this type of centrifugal flow barrel polishing machine, a part of the polishing liquid that leaks and flows down between the rubber liners into the outflow passage flows along the surface of the holding frame and is discharged from the drain port formed on the lower side. It is designed to be discharged out of the machine through a pipe.

[0003]

[Problems to be solved by the device]

 However, the polishing liquid in the outflow passage contains cutting chips generated during the polishing operation, crushed pieces of the polishing material, or abrasive powder as media, so that the polishing fluid entering the outflow passage seals. When it reaches the portion, the sealing portion is worn and the sealing effect is reduced. As a result, the polishing liquid enters the bearing portion side and is damaged, which hinders the rotation of the dish-shaped bottom plate. In addition, repairing the seals and bearings requires the operation to be stopped and the dish-shaped bottom plate to be removed, which is extremely cumbersome, time-consuming, and has poor productivity.

[0004]

[Means for Solving the Problems]

 In the centrifugal fluidized barrel sander of the present invention, which is intended to solve the above-mentioned problems, a bearing portion is formed at the center of a holding frame having a rubber liner lined in the side wall portion, and a bearing and a seal member are interposed therebetween. In a centrifugal flow barrel polishing machine in which a dish-shaped bottom plate lined with a rubber liner is horizontally rotatably supported at an interval that serves as an outflow passage for the polishing fluid flowing down from the gap between the two rubber liners, A seal cover for blocking the polishing liquid that flows into the seal member side of the bearing portion is provided so as to project from the boss portion side of the dish-shaped bottom plate toward the above-mentioned outflow passage, and polishing is performed near the bearing portion of the holding frame. It is characterized in that a cleaning nozzle for rinsing the liquid is provided.

[0005]

[Action]

 In such a centrifugal flow barrel polishing machine, a work is loaded into the polishing tank together with the abrasive, water, chemical medium, etc., and the dish-shaped bottom plate is horizontally rotated to rotate the mixture in the polishing tank together with the dish-shaped bottom plate. Although the mixture is spirally moved by the centrifugal force generated thereby to polish the entire surface of the work with the above-mentioned abrasive, etc., it is the same as the conventional centrifugal flow barrel polishing machine of this kind, but the gap between the rubber liners is increased during the polishing work. Even if part of the sludge-like polishing liquid that has flowed down into the outflow passage tries to flow into the seal member side of the bearing, the seal cover covers the outer periphery of the seal member in an awning shape in the outflow passage near the bearing. Since the polishing liquid is faced like this, the inflowing polishing liquid is blocked and cannot reach the seal member side. Further, when the cleaning water is supplied to the cleaning nozzle through the water supply pipe, the cleaning water is ejected to the outflow passage near the bearing portion including the seal cover and all the polishing liquid remaining in these portions can be washed away.

[0006]

【Example】

 Next, the present invention will be described in detail based on the illustrated embodiment. Reference numeral 1 is a pair of bases, and bearings 2 and 2 respectively provided on the bases 1 and 1 are provided with a rotating shaft 5 on which a holding frame 4 constituting a polishing tank 3 is projected on both sides. It is pivoted through 5. The holding frame 4 has a circular plate-shaped center portion, and a cylindrical side wall 6 forming a side surface of the polishing tank 3 is concentrically provided on the peripheral edge of the holding frame 4, and a rubber liner 7 is lined inside the side wall 6. is there. A cylindrical bearing portion 8 is formed at the center of the holding frame 4, and a vertical axis 9 is axially supported by bearings 10 and 10 at the lower end of the holding frame 4. It is connected to the output shaft of the driving device 11 installed at the bottom. Further, a dish-shaped bottom plate 12 constituting a bottom wall is attached to the side wall of the polishing tank 3 on the vertical axis 9, and the dish-shaped bottom plate 12 has a fitting hole 14 formed in a boss portion 13 at the center thereof. Is loosely fitted to the outer periphery of the bearing portion 8, the central portion of the boss portion 13 abuts on the upper end of the vertical axis 9 and is fixed by bolts, etc., and is horizontally rotatable by the drive of the drive device 11 via the vertical axis 9. Has become. The dish-shaped bottom plate 12 is positioned on the holding frame 4 with a slight gap corresponding to the polishing liquid outflow passage 15 to be described later between the plate-shaped bottom plate 12 and the upper surface of the holding frame 4. Further, between the bearing portion 8 of the holding frame 4 and the boss portion 13 of the dish-shaped bottom plate 12, seal members 16, 16 made of V-rings or the like are mounted, and the leaked polishing fluid enters the bearing 10 side. Has been blocked.

The upper surface of the dish-shaped bottom plate 12 is lined with a rubber liner 17 having a peripheral edge 17a with a small gap between the lower end inner edge 7a of the rubber liner 7 and therefore, during the polishing operation, a water liner Part of the polishing liquid made of chemical medium leaks out and flows down into the outflow passage 15, and 18 is an appropriate number of drainage ports formed in the holding frame 4 facing the outflow passage 15, A drain pipe 19 is connected to the drain port 18 so as to discharge the leaked polishing liquid to the outside of the machine, 20 is a plate-shaped or other stirring member provided on the back surface of the dish-shaped bottom plate 12, and 21 is an outflow. A water supply nozzle for supplying cleaning water into the passage 15, and the water supply nozzle 21 is arranged in the holding frame 4.

A seal cover 22 is provided on the back surface of the dish-shaped bottom plate 12 near the boss portion 13 so as to prevent leaking polishing fluid flowing from the outflow passage 15 to the bearing portion 8 side. The seal cover 22 is in the shape of a tube or a divergent tube whose outer shape is a truncated cone as shown in FIGS. 3 and 4, and the upper end having the opening 23 is fixed to the back surface of the dish-shaped bottom plate 12 by a bolt or the like and the lower end. Is facing the outflow passage 15, and can prevent the polishing liquid from advancing through the outflow passage 15 and entering the seal member 16 side. Moreover, an appropriate number of plates are provided on the upper surface of the seal cover 22. A stirring member 24 made of a shape or the like is provided.

A cleaning nozzle 25 is disposed near the bearing portion 8 of the holding frame 4, and the cleaning nozzle 25 is a cleaning water passage 26 formed in the holding frame 4 and a water supply pipe connected to the passage 26. It is connected via 27 to a water source (not shown).

The centrifugal-fluidized barrel polishing machine having the above-described structure is such that when the work is loaded into the polishing tank 3 together with the polishing material, water, chemical medium, etc. and the vertical axis 9 is rotated by the drive unit 11, The bottom plate 12 is horizontally rotated so that the mixture in the polishing tank 3 is rotated together with the dish-shaped bottom plate 12, and the centrifugal force generated thereby moves the mixture on the rubber liner 17 in a substantially tangential direction thereof. Reaches a certain height along the inner wall surface of the rubber liner 7 and then falls naturally to return to the center side of the dish-shaped bottom plate 12 while making a spiral motion to proceed with the rotation of the plate-shaped bottom plate 12. During this polishing, the work is entirely polished by the above-mentioned polishing material, etc., and during this polishing work, a part of the sludge-like polishing liquid in the mixture is partially in contact with the lower inner edge 7a of the rubber liners 7, 17 and the peripheral edge 1. 7a leaks and flows down into the outflow passage 15 from the gap between them, and most of them are discharged from the drainage port 18 to the outside of the machine by the action of the stirring member 20 and the cleaning nozzle 21, and some polishing liquid is sealed in the bearing portion 8. It flows into the member 16 side. However, in the outflow passage 15 in the vicinity of the bearing portion 8, the seal cover 22 protruding from the back surface of the dish-shaped bottom plate 12 faces the outer periphery of the seal member 16 like an awning, so that the inflowing polishing liquid Are blocked and cannot reach the seal member 16 side. Further, at this time, when the cleaning water is supplied to the cleaning nozzle 25 from the water source (not shown) through the water supply pipe 27, the cleaning water is ejected to the outflow passage 15 near the bearing portion 8 including the seal cover 22 and remains from these portions. All the polishing liquid thus prepared is washed out and discharged to the drain port 18.

[0011]

[Effect of device]

 As will be apparent from the description of the above embodiment, the present invention projects the seal cover so as to face the polishing fluid outflow passage so that the outer periphery of the seal member is covered with an awning like the boss side of the dish-shaped bottom plate. In addition, since the cleaning nozzle is arranged in the vicinity of the bearing portion of the holding frame, the sludge-like polishing liquid that leaks down into the outflow passage is prevented from flowing into the seal member side of the bearing portion. The polishing liquid ejected from the cleaning nozzle flushes all of the polishing liquid from the periphery of the seal member and discharges it from the drain port.Therefore, the sealing member is not damaged by the polishing liquid and does not enter these bearings. The bearings are kept normal all the time, and the rotation of the polishing tank does not become irregular.Moreover, repairs and inspections due to bearing damage are reduced, improving productivity, and polishing near the seal frame member of the holding frame. Nor such as liquid sludge is solidified deposited. Therefore, the present invention is of great practical value as a centrifugal fluidized barrel sander that solves the conventional problems.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention.

FIG. 2 is a cross-sectional plan view of the polishing tank portion of FIG.

FIG. 3 is a partially cutaway front view of a seal cover according to an embodiment of the present invention.

FIG. 4 is a partially cutaway plan view of a seal cover according to an embodiment of the present invention.

[Explanation of symbols]

 4 Holding frame 6 Side wall 7 Rubber liner 8 Bearing 10 Bearing 12 Plate bottom 13 Boss 15 Outflow passage 16 Sealing member 17 Rubber liner 22 Seal cover 25 Cleaning nozzle

Claims (1)

[Scope of utility model registration request] 1. A bearing part (8) is formed in the center of a holding frame (4) having a rubber liner (7) lined on a side wall part (6), and a bearing (10) and a seal member (16) are formed on the bearing part (8). Rubber liner through
Outflow channel (15) for the polishing liquid that flowed through the gap between the rubber liners (7) and (17) between the dish-shaped bottom plate (12) lined with (17)
In a centrifugal fluidized barrel sander that is rotatably supported horizontally at intervals such that the bearing portion (8) is extended from the outflow passage (15).
With a seal cover (22) for blocking the polishing liquid flowing into the seal member (16) side of the plate-like bottom plate (12) from the boss portion (13) side toward the outflow passage (15), A centrifugal-flow barrel polishing machine characterized in that a cleaning nozzle (25) for flushing the polishing liquid is arranged in the vicinity of the bearing portion (8) of the holding frame (4).