JPH10138115A - Partition wall for barrel tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a barrel tank partition wall that can partition a barrel tank easily in an optional place and can be assembled into the barrel tank with stabler force. SOLUTION: A partition wall 1 is composed of a main part 2 of hexagonal shape conformed to the cross-sectional shape of a barrel tank 5, and a press- fitting part 3 adjusted to a press-in groove 10 opened in isosceles triangular shape to one side of the main part 2. The main part 2 is placed in a requested position of the barrel tank 5, and the press-fitting part 3 is lightly fitted into the press-in groove 10. When a bolt 4A is passed through an insert hole 12 and a bolt receiving hole 11 and turned into a nut 4B, the press-fitting part 3 is firmly assembled to the main part 2. At this time, since the press-fitting part 3 is formed at a slightly larger angle than the press-in groove 10, the main part 2 is deformed open, so that a pressure-fitted edge 16 is pressure-fitted to the internal wall of the barrel tank 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a partition wall for a barrel tank for polishing a workpiece or the like.

[0002]

2. Description of the Related Art A partition wall shown in FIG. 9 is conventionally known as a partition wall for dividing an internal space of a polygonal barrel tank into a plurality of chambers (Japanese Utility Model Publication No. 54-166872). Partition wall 40
Is composed of three members, two side plates 41 and a rectangular center plate 42 fitted between them. Side plate 41
Is formed so as to be bent along the inner wall surface of the barrel tank, and the receiving pieces 41A are formed so as to face each other at the center, and the center plate 42 can be inserted into both the receiving pieces 41A. Is formed along the height direction. In order to mount the partition wall 40 in the barrel tank 43, first, the two side plates 41 are positioned at positions where the barrel tank 43 is desired to be divided, and the center plate 42 is pushed in from above to assemble the partition wall. The partition wall 40 shown here is excellent in that it can partition the barrel tank 43 at an arbitrary position and has a simple configuration.

[0003]

However, the center plate 42
Is set equal to or slightly smaller than the distance between the slits of both side plates 41, 41. In order to push the center plate 42 into a portion having such a fixed width, a very large force was required. However, if the dimension between both side plates 41, 41 is set so as to facilitate this insertion operation, the partition wall 4
The mounting strength of No. 0 may be reduced, and the function as a partition may be impaired. The present invention has been made in view of the above circumstances, and a problem thereof is to easily and easily divide a barrel tank at an arbitrary place, and to provide a barrel tank partition wall to be assembled in the barrel tank with a more stable force. To provide.

[0004]

According to a first aspect of the present invention, there is provided a barrel tank formed in a polygonal column shape or a column shape, and having a surface substantially perpendicular to a central axis of the tank. A barrel tank partition wall which is attached in parallel and detachably to divide the internal space of the barrel tank into a plurality of chambers,
A tapered recess narrowing toward the center is formed in a part of the main portion, and a main portion whose outer edge is allowed to expand and deform so as to be pressed against the inner wall surface of the barrel tank is pressed into the recess. The push-fit portion for expanding and deforming the main portion so as to press the outer edge of the main portion against the inner wall surface of the barrel tank.

According to a second aspect of the present invention, in the first aspect, a guide portion for guiding a fitting operation of the push-fit portion is formed at an opposing edge of the main portion and the push-fit portion. It is a characteristic partition wall for barrel tanks.

[0006]

According to the first aspect of the present invention, in order to partition the internal space of the barrel tank, first, the main part of the partition wall is inserted into the barrel tank, and the center axis of the barrel tank is positioned at a desired position. Is temporarily held in a posture substantially parallel to a plane perpendicular to the plane. Thereafter, when the press-fit portion is press-fitted into the concave portion, the main portion is deformed in the expanding direction with the press-fitting operation, and the outer edge of the main portion is pressed against the inner wall surface of the barrel tank to be in a crimped state. Thus, the inside of the barrel tank is divided into a plurality of chambers by the partition wall. As described above, according to the first aspect of the present invention, the partition wall is divided into the main portion and the press-fit portion, and the main portion is completely fixed by press-fitting the press-fit portion. Since the main part is formed slightly smaller than the cross section of the barrel tank at the beginning of the insertion, the initial insertion of the main part can be performed relatively smoothly.

According to the second aspect of the present invention, the press-fitting operation is guided when the press-fit portion is press-fitted into the concave portion, so that a smoother mounting operation is realized.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION

<First Embodiment> Next, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a state before a partition wall 1 according to a first embodiment of the present invention is assembled in a barrel tank 5. As described above, the barrel tank 5 can be applied to a rotary barrel, a centrifugal barrel, a vibrating barrel polishing device, or the like. The barrel tank 5 is made of iron, and is formed in a hexagonal column shape in this embodiment. The inside is a storage space for storing a work to be polished, a medium as an abrasive, and water, a chemical, or the like. The barrel tank 5 is rotatably supported on both sides of a barrel device body (not shown) (a reference numeral 6 shown in FIG. 4 and subsequent figures indicates a rotation axis of the barrel tank 5). Through which the internal work can be polished.

The upper surface of the six side surfaces of the barrel tank 5 is opened as an inlet 7 for a work or the like. A folded edge 8 is formed along the entire periphery of the inlet 7 so that a cover (not shown) for closing the inlet 7 can be assembled without a gap. A lining 9 made of urethane is adhered to the entire surface from the inner wall surface of the barrel tank 5 to the above-mentioned folded edge 8 with a uniform thickness. During the barrel polishing operation, the lining 9 holds the work or the like in the barrel tank 5.
It is provided for the purpose of, for example, colliding with the inner surface of the workpiece and damaging the work or the barrel tank 5 or reducing noise accompanying polishing. During barrel polishing, the temperature inside the barrel tank 5 may reach nearly 90 ° C. due to frictional heat or the like, so that the material of the lining 9 is desired to have heat resistance in addition to moderate elasticity. Therefore, rubber, vinyl chloride, or the like can be used without being limited to the urethane resin material of the present embodiment.

The partition wall 1 comprises a main part 2 which is assembled in close contact with the inner wall surface of the barrel tank 5, and a push-fit part 3 which is pushed into the main part 2. Further, a bolt 4A and a nut 4B are used to fix the two members. The main portion 2 is formed of a urethane resin material, and is formed into a hexagonal shape having a cross-sectional shape parallel to a surface orthogonal to the mounting axis of the barrel tank 5 or a slightly smaller hexagonal shape. ing. The thickness of the main part 2 depends on the material, but it is sufficient that the main part 2 has a strength enough to withstand a collision of a workpiece or the like for performing a polishing operation during the operation. In addition, the main part 2 needs to have a property to withstand the temperature in the barrel tank 5 during barrel polishing and a moderate elasticity. The material for this purpose is not limited to the urethane resin material of the present embodiment, but may be formed of rubber, vinyl chloride, or the like.

The main portion 2 is formed with a press-fit groove 10 which expands in a tapered shape diverging radially from the center thereof. The press-fitting groove 10 is opened at one edge of the main portion 2 with a width enough to slightly leave both ends thereof. A press fitting portion 3 described later is pushed into the press-fit groove 10. Here, the opening angle θ1 of the press-fit groove 10 is 30 °, the opening angle θ2 of the press-fitting portion 3 is 31 °, and the opening angle θ2 of the press-fitting portion is slightly larger. For this reason, the main part 2 is pressed into the barrel tank 5 by the press-fitting part 3.
Can be expanded so as to be pressed against the inner wall surface of the main body 2. Therefore, the side of the peripheral edge of the main portion 2 other than the edge corresponding to the opening of the barrel tank 5 has a crimping edge 1 against the inner wall surface of the barrel tank 5.
6 will be formed.

Two sides for receiving the press-fit portion 3 when the press-fit portion 3 is press-fitted into the press-fit groove 10 are formed in a shape as shown in FIG. That is, the cross section of both sides is a V-shaped receiving edge 13 having a valley at the center, while the opposing edge of the push-fit portion 3 has a mountain-shaped locking so as to be able to fit into and out of this. An edge 14 is formed. Thereby, the displacement of the push-fit portion 3 is prevented. The main part 2
At the bottom of the press-fit groove 10, a bolt receiving hole 11 having a predetermined depth is drilled from the valley bottom to a side located immediately below the valley bottom. Is inserted. In the bolt receiving hole 11, a large-diameter portion 11A is formed near the outlet to the side, and a nut 4B is fixed to the large-diameter portion 11A so that the tip of the bolt 4A can be tightened. ing.

The push-fit portion 3 is also formed of a urethane resin material, like the main portion 2, and is integrally fitted with the press-fitting groove 10 to form the partition wall 1 integrally with the main portion 2. The bottom of the press-fitting groove 10 is formed so as to form an arc in a natural state, while the front end of the press-fitting portion 3 facing the bottom is cut off in a plane so as to be parallel to the bottom side and flattened. 15 are formed. In FIG. 1, an insertion hole 12 is formed from the center of the upper side of the press-fit portion 3 to the flat portion 15. The insertion hole 12 is aligned with the bolt receiving hole 11 when the push-fit portion 3 is attached to the main portion 2. Further, on the entrance side of the insertion hole 12, a head groove 12A opened to a size capable of fastening the head of the bolt 4A.
It has been. When the bolt 4A is tightened and the assembly of the push-fit portion 3 is completed, the depth of the head groove 12A is set so that the head of the bolt 4A does not project from the push-fit portion 3. This is to prevent the barrel tank 5 from being hindered by the bolt 4A when the lid (not shown) is mounted.

Next, the operation and effect of the first embodiment configured as described above will be described. When the inside of the barrel tank 5 is divided into two chambers by the partition wall 1, as shown in FIG. 4, the main part 2 is oriented substantially parallel to the mounting axis of the barrel tank 5 and the press-fit groove 10 is expanded. Insert the inside of the barrel tank 5 so that the side faces upward. Next, the main part 2 is rotated around a vertical axis near the position where the inside of the barrel tank 5 is to be partitioned, and adjusted in a direction substantially orthogonal to the rotation axis of the barrel tank 5 (see FIG. 5). At this time, since the main portion 2 is equivalent to or slightly smaller than the hexagonal shape inside the barrel tank 5, it is relatively easy to perform a rotating operation even in the internal space of the barrel tank 5, and positioning in the direction along the rotation axis is also easy. can do.

Next, the press-fit portion 3 is loosely inserted into the press-fit groove 10, that is, the press-fit portion 3 is inserted to a depth halfway through the press-fit groove 10. Then, from the insertion hole 12 to the bolt receiving hole 1
1 and the bolt 4A is inserted and tightened to the nut 4B. In the process of tightening the bolt 4A, the locking edge 14 of the press-fitting portion 3 is inserted along the receiving edge 13 on the press-fitting groove 10 side. Since the angle θ2 is slightly larger than the opening angle θ1 of the main portion 2, when the push-fit portion 3 is pushed in as the bolt 4A is tightened, the push-fit portion 3 gradually expands the press-fit groove 10. Open deformation. For this reason, the main part 2 expands and deforms outward, and the crimping edge 16
Is pressed against the inner wall surface of the barrel tank 5 while being pressed, and the partition wall 1 is securely fixed to a desired position of the barrel tank 5.

As described above, according to the present embodiment, the space inside the barrel tank 5 can be partitioned at a desired position. In addition, since the partition wall 1 is divided into the main part 2 and the press-fit part 3, and the main part 2 is completely fixed by the press-fit part 3, the main part 2 is inserted in reverse. Initially, it is formed slightly smaller than the cross section of the barrel tank 5, so that the initial operation for inserting the main part 2 into the barrel tank 5 and adjusting the partition position is performed relatively smoothly. Despite being able to do so, the main part 2 can be brought into close contact with the inner wall surface of the barrel tank 5 by simply tightening the bolt 4A by utilizing the wedge effect of the push-fitting part 3, so that the partition wall 1 is fixed. The situation is solid.

In addition, the receiving edge 13 and the locking edge 14, which are the contact surfaces of the main part 2 and the press-fitting part 3, can be fitted with concave and convex. For this reason, when press-fitting the press-fit portion 3 into the press-fitting groove 10, the press-fitting operation is guided, and a more smooth mounting work can be realized.

<Second Embodiment> Next, a second embodiment of the present invention will be described with reference to FIG. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In the present embodiment, the shape of the barrel tank 38 is substantially circular in cross section, and the partition wall 35 composed of the main portion 36 and the press-fit portion 37 is formed in a circular shape that is in close contact with the inner wall of the barrel tank 38. I have. Also, on the inner wall surface of the barrel tank 38,
A lining 39 made of urethane is attached with a uniform thickness. With such a configuration, the same operation and effect as those of the first embodiment can be obtained. Third Embodiment Next, a third embodiment of the present invention will be described.
This will be described with reference to FIG. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In the present embodiment, the main part 20 is formed by dividing the main part 20 into two members. It can be combined and integrated. With such a configuration, the same operation and effect as those of the first embodiment can be obtained. Further, in the present embodiment, the main part 20 is compared with the first embodiment.
, The effect of simplifying the operation of adjusting the partition position can be obtained.

<Fourth Embodiment> Next, a fourth embodiment of the present invention will be described with reference to FIG. The same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. Also in the present embodiment, the partition wall 25 is constituted by the main portion 26 and the press-fit portion 27, and these two members are assembled with two bolts 30 on both sides of the opening of the press-fit groove 10. That is, the upper edge of the push-fit portion 27 is formed with left and right overhanging portions 31, through which the insertion holes 29 for inserting the bolts 30 respectively pass.

On the other hand, in the main portion 26, both overhang portions 31
A concave portion 32 is formed at a position corresponding to, so that the upper surface does not protrude from the barrel tank when the press fitting portion 27 is mounted. A bolt receiving hole 28 is formed in each of the recesses 32, and a nut 33 is fixed to an entrance portion thereof (attached by insert molding or the like). With such a configuration, the same operation and effect as in the first embodiment can be obtained.

<Fifth Embodiment> Next, a fifth embodiment of the present invention will be described with reference to FIG. The first
The same parts as those in the embodiment are denoted by the same reference numerals, and description thereof will be omitted. In the present embodiment, the partition wall 50 is composed of a main portion 51 and a press-fit portion 52, but the main portion 51 is made of a steel plate or a steel plate with urethane lining or the like. A notch groove 53 is provided at the tip of the press-fit groove 10 of the main portion 51 toward the opposite side. Therefore, when the bolt 4A is inserted into the bolt receiving hole 11 after the press-fit portion 52 is pushed into the press-fit groove 10 of the main portion 51, the cutout groove 53 expands, and the main portion 51 expands and deforms. I have. As described above, even when the main portion 51 is made of iron, the notch groove 53 has an elastic structure in which the notch grooves 53 expand and deform.
The main part 51 can be pressed against the inner wall surface of the barrel tank 5, and the partition wall 50 can be fixed. With such a configuration, the same operation and effect as in the first embodiment can be obtained.

The present invention is not limited to the above embodiment, but includes, for example, the following. The joint surface between the main portion and the press-fit portion is not limited to the V-shape or the chevron shape, but various concave-convex fits are conceivable. The point is that the main portion expands and deforms when the press-fit portion is fitted. I just need. Further, even if the joining surface has a simple planar structure, the object can be sufficiently achieved. In the present embodiment, the press-fitting groove provided in the main portion has a triangular shape that is open outward, but, for example, a central portion is hollowed out in a circular shape, and an equivalent or slightly larger press-fit portion is inserted. It may be in the form. The push-fitting portion is not limited to one that is bolted to the main portion, and a system that tightens the barrel portion itself is also possible. Further, other clamping means may be used without necessarily adopting the fixing method by bolting. The crimping edge does not necessarily have to closely adhere along the inner wall of the barrel tank, but may be partially crimped at an appropriate number of locations. In this case, the spaces defined in the barrel tank communicate with each other slightly. However, if the work, the polishing stones, and the like are not mixed, even if the water is mixed, this situation is caused by polishing. The effect on is negligible.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a first embodiment before a partition wall is assembled in a barrel tank.

FIG. 2 is a front sectional view after a partition wall is assembled in a barrel tank in the same embodiment.

FIG. 3 is a sectional view taken along line AA in FIG. 2;

FIG. 4 is a perspective view when the main part is inserted into a barrel tank in the embodiment.

FIG. 5 is a perspective view when the main part is rotated and placed at a desired position in the embodiment;

FIG. 6 is a perspective view showing a state before the push-fit portion is attached to the main portion in the embodiment.

FIG. 7 is a front sectional view showing a state before a partition wall is assembled in a barrel tank in the second embodiment.

FIG. 8 is a front view showing a main part in a third embodiment.

FIG. 9 is a front view before assembling a partition wall in a barrel tank in the fourth embodiment.

FIG. 10 is a front view after a partition wall is assembled in a fifth embodiment.

FIG. 11 is a front sectional view showing a conventional partition wall for a barrel tank.

[Explanation of symbols]

 1, 25, 35, 50: Partition wall (partition wall for barrel tank) 2, 20, 26, 36, 51: Main part 3, 27, 37, 52 ... Push-fit part 5, 38: Barrel tank 9, 39 ... Lining (inner wall surface of barrel tank) 10 ... Press-fit groove (recess) 13 ... Receiving edge (opposing edge) 14 ... Locking edge (opposing edge) 16 ... Pressing edge (outer edge)

Claims (2)

[Claims] 1. A barrel tank formed in a polygonal column shape or a column shape and detachably attached substantially parallel to a surface orthogonal to a center axis of the tank and removably attached to the inside of the barrel tank into a plurality of chambers. A partition wall for a barrel tank that is partitioned, and a tapered concave portion that narrows toward the center is formed in a part of the partition wall, while expanding deformation such that the outer edge of the partition wall is pressed against the inner wall surface of the barrel tank. It is characterized by comprising an allowed main part, and a press-fit part that expands and deforms the main part by being press-fitted into the concave part so as to press the outer edge of the main part against the inner wall surface of the barrel tank. Partition wall for barrel tank. 2. The barrel tank according to claim 1, wherein a guide portion for guiding a fitting operation of the push-fit portion is formed at an opposing edge of the main portion and the push-fit portion. Partition walls.