JP3396588B2 - Barrel tank partition - Google Patents

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, as a partition wall which divides the inner space of a polygonal barrel tank into a plurality of chambers, one shown in FIG. 11 is known (Japanese Utility Model Publication No. 54-16872). Partition wall 4
Reference numeral 0 is composed of three side plates 41 and a rectangular center plate 42 fitted between them. Side plate 4
No. 1 is formed in a bent shape along the inner wall surface of the barrel tank, and receiving pieces 41A are formed so as to face each other at the center portions thereof, and a center plate 42 is inserted into both receiving pieces 41A. The possible slits are formed along the height direction. This partition wall 40 is a barrel tank 43
In order to mount it inside, first, the two side plates 41 are placed at positions where the barrel tank 43 is desired to be divided, and the center plate 42 is pushed in from above between them to assemble. 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 structure.

[0003]

However, the central plate 42
The width dimension of is equal to or slightly smaller than the distance between the slits of the both side plates 41, 41. Then, in order to push the center plate 42 into a portion having such a fixed width dimension, a very large force is required. However, if the dimension between the both side plates 41, 41 is set so as to facilitate this inserting operation, the partition wall 4
The mounting strength of No. 0 decreases, and the function as a partition may be hindered. The present invention has been made in view of the above circumstances, and an object thereof is to easily and easily partition a barrel tank at any place, and to provide a barrel tank partition wall that is assembled in the barrel tank with more stable force. It is in the place of providing.

[0004]

According to the invention of claim 1 for solving the above-mentioned problems, the inside of a barrel tank formed in a polygonal column shape or a cylindrical shape is almost formed in a plane orthogonal to the central axis of the tank. A partition wall for a barrel tank, which is detachably attached in parallel and partitions the internal space of the barrel tank into a plurality of chambers,
A tapered concave part that narrows toward the center part is formed in a part of it, while the main part is allowed to expand and deform so that its outer edge is crimped to the inner wall surface of the barrel tank, and press fit into the concave part. By doing so, it comprises a push-fitting portion for expanding and deforming the main portion so that the outer edge of the main portion is pressed 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-fitting portion is formed at an edge opposite to the main portion and the push-fitting portion. It is a characteristic partition wall for barrel tanks.

[0006]

According to the invention of claim 1, in order to partition the internal space of the barrel tank, first, the main portion of the partition wall is inserted into the barrel tank, and the central axis of the barrel tank is placed at a desired position. It is temporarily held in a posture substantially parallel to the plane orthogonal to. Then, when the press-fitting portion is press-fitted into the concave portion, the main portion is deformed in the expanding direction in accordance 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 invention, the partition wall is divided into the main portion and the push-fitting portion, and the main portion is permanently stopped by press-fitting the push-fitting portion. Since the main part is formed slightly smaller than the cross section of the barrel tank at the beginning of insertion, the initial insertion work of the main part can be performed relatively smoothly.

According to the second aspect of the invention, since the press-fitting operation is guided when the press-fitting portion is press-fitted into the recess, a smoother mounting work can be realized.

[0008]

DETAILED DESCRIPTION OF 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 the partition wall 1 according to the first embodiment of the present invention is assembled in the 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. Now, the barrel tank 5 is made of iron, and is formed in a hexagonal column shape in this embodiment. The inside thereof is an accommodation space for accommodating a work to be polished, a medium as an abrasive, and water, chemicals and the like. Further, the barrel tank 5 is supported by a barrel device main body (not shown) in a state in which both side surfaces thereof are rotatable (reference numeral 6 shown in FIG. 4 and subsequent figures indicates a rotation axis of the barrel tank 5), and its rotation operation or revolution operation is performed. The internal work can be polished through.

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 folding edge 8 is formed along the entire circumference of the insertion opening 7 so that a lid (not shown) for closing the insertion opening 7 can be assembled without a gap. A urethane lining 9 having a uniform thickness is attached to the entire surface of the barrel tank 5 from the inner wall surface to the folded edge 8. This lining 9 is used for barrel work 5 during work of barrel polishing.
It is provided for the purpose of colliding with the inner surface of the workpiece and damaging the work or the barrel tank 5, or reducing noise accompanying polishing. During the barrel polishing, the temperature inside the barrel tank 5 may reach as high as 90 ° C. due to frictional heat or the like, so that the lining 9 is desired to have heat resistance as well as moderate elasticity. Therefore, not only the urethane resin material of the present embodiment but also rubber, vinyl chloride, etc. can be used.

The partition wall 1 is composed of a main portion 2 which is closely attached to the inner wall surface of the barrel tank 5 and is attached thereto, and a push-fit portion 3 which is pushed into the main portion 2. Also, a bolt 4A and a nut 4B are used to fix the two members. Of these, the main portion 2 is formed of a urethane resin material, and is formed into a hexagonal shape that is equal to or slightly smaller than a hexagonal shape that is a cross-sectional shape parallel to a plane orthogonal to the mounting axis of the barrel tank 5. ing. Although the thickness of the main portion 2 depends on the material, it is sufficient that the main portion 2 has such strength that it can withstand the collision of a work or the like during polishing during the work. In addition, the main part 2 needs to have a property of withstanding the temperature in the barrel tank 5 during barrel polishing and an appropriate elasticity. The material for this purpose is not limited to the urethane resin material of this embodiment, but rubber, vinyl chloride, or the like can be used.

A press-fitting groove 10 is formed in the main portion 2 and expands in a tapered shape from the center of the main portion 2 in the radial direction. The press-fitting groove 10 is open at one edge of the main portion 2 with a width such that both ends thereof are slightly left. The press-fitting portion 3 described later is pushed into the press-fitting groove 10. Here, the opening angle θ1 of the press-fitting groove 10 is 30 ° and the opening angle θ2 of the press-fitting portion 3 is 31 °, and the opening angle θ2 of the pressing-fitting portion is slightly larger. Therefore, the main portion 2 is press-fitted into the press-fitting portion 3 so that the barrel tank 5
It is possible to expand and deform so as to come into pressure contact with the inner wall surface of the barrel tank 5. Therefore, the side of the peripheral edge of the main portion 2 excluding the edge corresponding to the opening of the barrel tank 5 is the crimping edge 1 against the inner wall surface of the barrel tank 5.
6 will be formed.

Further, two sides that receive the push-fitting portion 3 when the push-fitting portion 3 is press-fitted into the press-fitting 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, whereas the opposite edge of the push-fitting section 3 is a mountain-shaped locking so that it can be fitted in an uneven shape. A rim 14 is formed. This prevents the push-fitting portion 3 from shifting. Also, the main part 2
In the bottom of the press-fitting groove 10, a bolt receiving hole 11 having a predetermined depth is bored toward a side located directly below the groove, and a bolt 4A for assembling the push-fitting portion 3 to the main portion 2 is provided here. 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 portion of the bolt 4A can be tightened. ing.

Like the main portion 2, the push-fitting portion 3 is also made of a urethane resin material, and is fitted into the press-fitting groove 10 in close contact with the main portion 2 to form the partition wall 1 integrally with the main portion 2. In the natural state, the bottom of the press-fitting groove 10 is formed so as to form an arc, whereas the tip end of the press-fitting portion 3 facing this is cut off into a flat shape so as to be parallel to the bottom side. 15 is formed. Further, in FIG. 1, the insertion hole 12 is formed from the central portion of the upper side of the press-fitting portion 3 to the flat portion 15. The insertion hole 12 is adapted to be aligned with the bolt receiving hole 11 when the push-fitting portion 3 is assembled to the main portion 2. Further, at the entrance side of the insertion hole 12, a head groove 12A opened to a size capable of tightening the head of the bolt 4A.
It is said that. The depth of the head groove 12A is set so that the head of the bolt 4A does not project from the push-fitting portion 3 when the bolt 4A is tightened and the assembling of the push-fitting portion 3 is completed. This is to prevent the bolt 4A from obstructing when the barrel tank 5 is fitted with a lid (not shown).

Next, the function and effect of the first embodiment configured as described above will be described. When partitioning the interior of the barrel tank 5 into two chambers by the partition wall 1, as shown in FIG. 4, the main portion 2 is oriented substantially parallel to the mounting axis of the barrel tank 5 and the press-fit groove 10 is expanded. Insert into the barrel tank 5 with the side facing up. Next, the main portion 2 is rotated around the vertical axis near the position where the interior of the barrel tank 5 is desired to be partitioned, and the main portion 2 is 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 equal to or slightly smaller than the hexagonal shape inside the barrel tank 5, it is relatively easy to perform the rotating operation even in the internal space of the barrel tank 5, and the positioning in the direction along the rotation axis is also easy. can do.

Next, the push-fitting portion 3 is loosely inserted into the press-fitting groove 10, that is, the push-fitting portion 3 is inserted to an intermediate depth of the press-fitting groove 10. Then, from the insertion hole 12 to the bolt receiving hole 1
Insert bolt 4A over 1 and tighten it to nut 4B. In the process of tightening the bolt 4A, the locking edge 14 of the push-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, the push-fitting portion 3 gradually expands the press-fitting groove 10 as the push-fitting portion 3 is pushed in as the bolt 4A is tightened. Open deformation. Therefore, the main portion 2 is expanded and deformed outward, and the crimping edge 16 of the outer edge is deformed.
While being pressed against the inner wall surface of the barrel tank 5, the partition wall 1 is securely fixed to a desired position in the barrel tank 5.

As described above, according to this embodiment, the space inside the barrel tank 5 can be partitioned at a desired position. Further, since the partition wall 1 is configured by being divided into the main portion 2 and the push-fitting portion 3, and the main portion 2 is finally stopped by press-fitting the push-fitting portion 3, the main portion 2 is inserted in reverse. Initially, it is formed to be slightly smaller than the cross section of the barrel tank 5, so the initial work for inserting the main portion 2 into the barrel tank 5 and adjusting the partition position is relatively smooth. Although it is possible, 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 and utilizing the wedge effect of the push-fitting part 3, thus fixing the partition wall 1. The situation is solid.

In addition, the receiving edge 13 and the locking edge 14, which are the contact surfaces of the main portion 2 and the push-fitting portion 3, can be fitted in a concave-convex shape. Therefore, when press-fitting the press-fitting portion 3 into the press-fitting groove 10, the press-fitting operation is guided, and a smoother mounting operation 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 designated by the same reference numerals and the description thereof will be omitted. In the present embodiment, the barrel tank 38 has a substantially circular cross-section, and the partition wall 35 including the main portion 36 and the push-fitting portion 37 has a circular shape that is in close contact with the inner wall of the barrel tank 38. There is. Also, on the inner wall surface of the barrel tank 38,
A urethane lining 39 is attached with a uniform thickness. Even with such a configuration, the same operational effect as that 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 designated by the same reference numerals and the description thereof will be omitted. In the present embodiment, the main portion 20 is formed by being divided into two members, and the left main portion 21 and the right main portion 22 that are divided by the step-like cut that crosses the lower portion of the bolt receiving hole 11 are formed. It can be combined and integrated. Even with such a configuration, the same operational effect as that of the first embodiment can be obtained. Further, in this embodiment, the main portion 20 is different from that in the first embodiment.
Since the partition is divided, the operation of adjusting the partition position can be simplified.

<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 designated by the same reference numerals and the description thereof will be omitted. Also in the present embodiment, the partition wall 25 is composed of the main portion 26 and the push-fitting portion 27, but these two members are assembled with the two bolts 30 on both sides of the opening of the press-fitting groove 10. In other words, the upper edge of the push-fitting portion 27 is formed with overhanging portions 31 on the left and right sides, and the insertion holes 29 for inserting the bolts 30 respectively penetrate there.

On the other hand, in the main portion 26, both overhanging portions 31
A concave portion 32 is formed at a position corresponding to, so that the upper surface of the push-fitting portion 27 does not project from the barrel tank when the push-fitting portion 27 is mounted. A bolt receiving hole 28 is bored in each of the recessed portions 32, and a nut 33 is fixed to the entrance portion of the bolt receiving hole 28 (mounted by insert molding or the like). Even with such a configuration, the same operational effect as that of 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 designated by the same reference numerals and the description thereof will be omitted. In the present embodiment, the partition wall 50 is composed of the main portion 51 and the press-fitting portion 52, but the main portion 51 is made of a steel plate or a steel plate subjected to urethane lining or the like. A notched groove 53 is provided at the tip of the press-fitting 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 push-fitting portion 52 is pushed into the press-fitting groove 10 of the main portion 51, the notch groove 53 expands, so that the main portion 51 expands and deforms. There is. In this way, even if the main portion 51 is made of iron, the notch groove 53 has an elastic structure that expands and deforms,
The main part 51 can be pressure-bonded to the inner wall surface of the barrel tank 5, and the partition wall 50 can be fixed. Even with such a configuration, the same operational effect as that of the first embodiment can be obtained.

The present invention is not limited to the above-mentioned embodiment, and includes, for example, the following ones. The joint surface between the main portion and the push-fitting portion is not limited to the V shape or the mountain shape, and various concavo-convex fittings are conceivable. The point is that the main portion is expanded and deformed when the push-fitting portion is fitted. Good. Further, the object can be sufficiently achieved even if the joint surface has a simple planar structure. In the present embodiment, the press-fitting groove provided in the main portion has a triangular shape that opens outward, but, for example, the central portion is hollowed out, and a press-fitting portion equivalent to or slightly larger than that is inserted. It can be in the form. The push-fitting portion is not limited to one that is bolted to the main portion, but a method of tightening the barrel tank itself is also possible. Also, other clamping means may be used without necessarily adopting the fixing method by bolting. The crimping edge does not necessarily have to be in close contact with the inner wall of the barrel tank, and may be partially crimped at an appropriate number of places. In this case, the spaces partitioned in the barrel tank are slightly communicated with each other, but if the work and the polishing stone are not mixed, even if water is mixed, this situation will The impact on can be ignored.

[Brief description of drawings]

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

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

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

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

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

FIG. 6 is a perspective view before attaching the press-fitting portion to the main portion in the same embodiment.

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

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

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

FIG. 10 is a front view after the partition wall is assembled in the 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 walls (partition walls for barrel tanks) 2, 20, 26, 36, 51 ... Main part 3, 27, 37, 52 ... Push-fit section 5, 38 ... Barrel tank 9, 39 ... Lining (inner wall of barrel tank) 10 ... Press fit groove (recess) 13 ... Receiving edge (opposite edge) 14 ... Locking edge (opposing edge) 16 ... Crimping edge (outer edge)

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Open 51-111296 (JP, U) Open 62-26244 (JP, U) Open 51-46167 (JP, Y2) (58) Field (Int.Cl. ⁷ , DB name) B24B 31/02 B24B 31/12 B65D 25/04

Claims (2)

(57) [Claims] 1. A barrel tank formed into a polygonal columnar shape or a columnar shape is detachably attached to the inside of the barrel tank substantially parallel to a plane orthogonal to the central axis of the tank, and the inner space of the barrel tank is divided into a plurality of chambers. It is a partition wall for partitioning a barrel tank, and a tapered recess that narrows toward the center is formed in a part of it, while the expansion deformation that causes the outer edge of the partition wall to press against the inner wall surface of the barrel tank. It is characterized by comprising an allowed main part and a push-fitting part for expanding and deforming the main part so that the outer edge of the main part is press-fitted into the recess 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-fitting portion is formed at an edge of the main portion and the push-fitting portion facing each other. Partition wall.