JP2021037595A - Work stocker - Google Patents

Abstract

To correspond to difference in size or a shape of shaft-shaped work with a simple structure, and to facilitate set-up changing.SOLUTION: A work stocker 1 includes four moving blocks 4A and 4B capable of sliding in parallel with an axis of work 20 and being fixed at optional slide positions, rails 7 that are provided so as to incline downward to the moving blocks 4A and 4A respectively, and have a stopper 8 at a downward end portion to adjust height in a vertical direction, and guides 11 that are provided so as to incline downward to moving blocks 4B and 4B respectively, and can adjust height in a vertical direction. By adjusting the slide positions of the moving blocks 4A and 4A and adjusting the height of each rail 7, the work 20 can be supported from a lower side by each rail 7. By adjusting the slide positions of the moving blocks 4B and 4B and adjusting the height of each guide 11, each guide 11 can abut on both end surfaces in an axial direction of the work 20.SELECTED DRAWING: Figure 1

Description

The present invention relates to a chute-type work stocker that holds a plurality of shaft-shaped workpieces and delivers them to a machine tool.

When a machine tool automatically conveys and processes a shaft-shaped work, a work stocker that holds a plurality of works is used. As this work stocker, for example, in Patent Document 1, a plurality of trays having a V-shaped cross section for accommodating shaft-shaped workpieces are arranged between a pair of chains, and the trays are conveyed to a predetermined payout position and pushed out. The structure to be paid out by is disclosed.
On the other hand, as an inexpensive and simple structure that does not use a tray or an extrusion device for each work, a chute type in which a plurality of works are collectively held on a chute and delivered by a transfer device such as a robot arm. Work stocker is also known.

FIG. 2 shows an example of a shoot-type work stocker 30. The shaft-shaped work 20 here has a multi-stage diameter that gradually decreases in diameter toward one end in the axial direction.
The work stocker 30 is supported by two support rods 31 and 31 which are supported in parallel with each other and whose inclination angle can be set by the adjusting bolts 32 and 32 at both ends, and the support rods are divided into upper and lower half portions 34 and 34. It is provided with a block 33 that is supported in an inclined posture by sandwiching 31 and 31 and screwing them together. In the block 33, a pair of rails 35, 35 having different heights that support the maximum diameter portion 21 on one end side of the work 20 and the minimum diameter portion 22 on the other end side from below, respectively, have the same inclined posture as the block 33. It is provided in. A stopper 36 for stopping the work 20 is provided at the descending end of each rail 35. Further, on the block 33, guide plates 37, 37 that abut on both end faces in the axial direction of the work 20 and perform axial positioning are mounted.
With the rails 35, 35 and the guide plates 37, 37, a plurality of workpieces 20, 20, ... Of the same shape can be stocked side by side. The work 20 is sequentially taken out from the lowest stage that comes into contact with the stopper 36.

Japanese Unexamined Patent Publication No. 2013-169601

In the work stocker 30, since the rail 35 and the guide plate 37 are fixed to the block 33 in accordance with the work 20 having a constant shape, the rail 35 and the rail 35 can be used when the size and shape of the work 20 are different. It is necessary to prepare a plurality of blocks 33 having different sizes and positions from the guide plate 37 and change the setup. Therefore, it takes time and effort to replace the block 33, and the cost for preparing and managing a plurality of types of blocks 33 is also high.
Further, when there is a diameter difference at both ends or an unbalanced shape as in the work 20, the work may not roll well on the chute and may be caught in the middle, which may affect the setup change work. If there is a difference in diameter at both ends of the work, catching will not occur if the end on the small diameter side can slide on the rail in addition to rotation, but the frictional resistance between the rail and the guide plate is large, so catching is prevented. Is getting harder.

Therefore, an object of the present invention is to provide a work stocker that facilitates setup change work by making it possible to deal with differences in the size and shape of a shaft-shaped work with a simple structure.
Another object of the present invention is to provide a work stocker that facilitates setup change work by preventing the work from being caught.

In order to achieve the above object, the invention according to claim 1 supports a plurality of shaft-shaped workpieces in a parallel state in which the axes are parallel to each other and are inclined downward to one side in a direction orthogonal to the axes. It is a shoot-type work stocker that
At least four moving bodies that can slide parallel to the axis and can be fixed at any slide position.
A rail that is provided on at least a pair of moving bodies so as to be inclined downward in a direction orthogonal to the axis, and has a stopper at the downward end so that the height in the vertical direction can be adjusted.
Each of the other at least a pair of moving bodies of the moving body is provided with a downward inclination in a direction orthogonal to the axis line, and includes a guide whose height in the vertical direction can be adjusted.
By adjusting the slide position of the pair of moving bodies and adjusting the height of each of the rails, the work can be supported from below by each of the rails.
By adjusting the slide position of the other pair of moving bodies and adjusting the height of each guide, each guide can come into contact with both end faces in the axial direction of the work.
According to the second aspect of the present invention, in the above configuration, each of the rails and each of the guides has a work contact portion extending linearly in the direction of the downward inclination, and each of the work contact portions contacts the work. It is characterized by being possible.
The invention according to claim 3 is characterized in that, in the above configuration, each of the rails and the guides are each formed of a round bar.
The invention according to claim 4 is characterized in that, in the above configuration, the surfaces of the rail and the guide are plated.
In order to achieve the above object, the invention according to claim 5 supports a plurality of shaft-shaped workpieces in a parallel state in which the axes are parallel to each other and are inclined downward to one side in a direction orthogonal to the axes. It is a shoot-type work stocker that
A rail that is provided so as to be inclined downward in a direction orthogonal to the axis and has a stopper at the downward end so that the work can be supported from below.
Includes a guide that is provided so as to be inclined downward in a direction orthogonal to the axis and can abut on both end faces in the axial direction of the work.
The rail and the guide have a work contact portion extending linearly in the downward inclination direction, and each of the work contact portions can come into contact with the work.
The invention according to claim 6 is characterized in that, in the above configuration, the rail and the guide are each formed of a round bar and have the work contact portion.
The invention according to claim 7 is characterized in that, in the above configuration, the surfaces of the rail and the guide are plated.

According to the first aspect of the present invention, the slide position and height of the rail and the guide can be adjusted according to the size and shape of the work, so that even if the size and shape of the work are different, it can be easily dealt with. .. Therefore, the types of workpieces that can be automated increase, and the work of setup change becomes easy with a simple structure.
According to the invention of claim 5, since the rail and the guide make line contact or point contact with the work by the work contact portion, the frictional resistance with the work becomes small. Therefore, even a work having a diameter difference at both ends or a work having an unbalanced shape is less likely to be caught, and the setup change work becomes easy.

In the explanatory view of the work stocker, (A) is a front view seen from the descending end side of the rail, and (B) is a sectional view taken along line AA. In the explanatory view of the conventional work stocker, (A) is a front view seen from the descending end side of the rail, and (B) is a sectional view taken along line BB.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory diagram showing an example of a work stocker. Similar to the work stocker shown in FIG. 2, the work stocker 1 is provided with two parallel support rods 2 and 2 that are horizontally supported, and the heights of the work stockers 1 are adjusted by adjusting bolts 3 and 3 provided at both ends. By doing so, it is possible to set the angle of inclination from the horizontal posture in the direction orthogonal to the axis. The work 20 stocked here has a multi-stage shape in which the diameter gradually decreases toward the left side in FIG. 1 (A) in the axial direction.
Further, the support rods 2 and 2 are provided with four moving blocks 4A, 4A and 4B, 4B.
The moving blocks 4A and 4B are also assembled to the support rods 2 and 2 in an inclined posture by sandwiching the support rods 2 and 2 between the vertically divided half portions 5a and 5b and screwing them together. It can be fixed at any position by sliding it in the axial direction of.

A rail 7 is provided via a plate 6 on the pair of moving blocks 4A and 4A located on the central side in the axial direction of the support rods 2 and 2. The rail 7 is a round bar whose surface is plated, and is fixed to the upper end of the plate 6 along the inclined posture of the moving block 4A. Therefore, a work contact portion 7a extending linearly along the inclination direction is formed on the upper surface of the rail 7. A stopper 8 is bent upward at the descending end of the rail 7.
The plate 6 is fixed between the support rods 2 and 2 to the upper half portion 5a of the moving block 4A by screws 9 and 9, but the plate 6 has elongated holes 10 and 10 through which the screws 9 and 9 penetrate. Is formed in the direction orthogonal to the rail 7. Therefore, if the plate 6 is moved up and down along the elongated holes 10 and 10 to change the screwing position, the height of the rail 7 can be adjusted according to the diameter of the work 20. The work contact portion 7a of the rail 7 which is a round bar comes into point contact with the peripheral surface of the work 20.

Further, the pair of moving blocks 4B and 4B located outside the moving blocks 4A and 4A are provided with guides 11 via a plate 6. The guide 11 is also a round bar whose surface is plated, has a diameter smaller than that of the rail 7, and is fixed to the upper end of the plate 6 along the inclined posture of the moving block 4B. Therefore, a work contact portion 11a extending linearly along the inclination direction is formed on the side surface of the guide 11.
Similar to the moving block 4A, the plate 6 attached to the moving block 4B can also move up and down by the elongated holes 10 and 10 through which the screws 9 and 9 penetrate. Therefore, if the screwing position of the plate 6 is changed according to the height of the work 20, the work contact portion 11a of the guide 11 can be brought into line contact with the end surface of the work 20.

In the work stocker 1 configured as described above, it is possible to respond by changing the slide positions of the moving blocks 4A and 4B and the heights of the rail 7 and the guide 11 according to the size and shape of the work 20 to be stocked. Become. In FIG. 1, the moving blocks 4A and 4A are positioned below the maximum diameter portion 21 of the work 20 and below the minimum diameter portion 22, and the heights of the rails 7 and 7, respectively, are changed to change the maximum diameter portion 21 and the maximum diameter portion 21. The small diameter portion 22 is supported from below.
Further, by positioning the moving blocks 4B and 4B on the outside of the maximum diameter portion 21 and the outside of the minimum diameter portion 22 and changing the heights of the guides 11 and 11, respectively, the maximum diameter portion 21 and the minimum diameter portion 22 can be separated from each other. The guides 11 are brought into contact with the end faces, respectively.

Therefore, the works 20, 20 ... Are supported in parallel on the rails 7 and 7 between the guides 11 and 11, and the lowermost work 20 abuts on the stoppers 8 and 8 due to the inclination of the rails 7 and 7. Stocked in parallel at.
At this time, since each work 20 is supported by point contact or line contact between the work contact portion 7a of the rail 7 and the work contact portion 11a of the guide 11, even if there is a step at both ends, the rail 7 and the guide 11 are supported. The frictional resistance between them becomes smaller. Therefore, it becomes slippery on the rails 7 and 7 and is less likely to be caught in the middle.
Then, when the lowermost work 20 is taken out, the work 20 is sequentially rolled down due to the inclination of the rails 7 and 7. At this time, since each work 20 is supported in parallel with the support rods 2 and 2 by rails 7 and 7 whose heights are adjusted at both ends, the work 20 is not caught between the guides 11 and 11 and is at the bottom. It rolls smoothly to the delivery position.

As described above, the work stocker 1 of the above-described form has four moving blocks 4A and 4B (moving bodies) that can be slid parallel to the axis of the work 20 and can be fixed at an arbitrary slide position, and a pair of moving blocks 4A and 4A. To the rail 7 which is provided so as to be inclined downward in the direction perpendicular to the axis and has a stopper 8 at the downward end and whose height can be adjusted in the vertical direction, and to the other pair of moving blocks 4B and 4B, respectively. A guide 11 which is provided so as to be inclined downward in a direction orthogonal to the axis and whose height in the vertical direction can be adjusted, adjusts the slide positions of the pair of moving blocks 4A and 4A, and heights of each rail 7. By adjusting the above, the work 20 can be supported from below by each rail 7, and by adjusting the slide positions of the other pair of moving blocks 4B and 4B and adjusting the height of each guide 11, each guide 11 works. It is possible to contact both end faces in the axial direction of 20.
Therefore, the slide positions and heights of the rails 7 and 7 and the guides 11 and 11 can be adjusted according to the size and shape of the work 20, so that even if the size and shape of the work 20 are different, it can be easily dealt with. Therefore, the number of types of work 20 that can be automated increases, and the simple structure facilitates the work of setup change, which leads to cost reduction.

The work stocker 1 of the above embodiment is provided with a downward inclination in a direction orthogonal to the axis of the work 20, a rail 7 having a stopper 8 at the downward end and capable of supporting the work 20 from below, and the axis. The rail 7 and the guide 11 include a guide 11 which is provided so as to be inclined downward in the direction orthogonal to the work 20 and which can come into contact with both end faces in the axial direction of the work 20, and the rail 7 and the guide 11 are in contact with the work extending linearly in the downward inclination direction. It has a portion 7a and a work contact portion 11a, and the work contact portions 7a and 11a can contact the work 20.
Therefore, the frictional resistance between the work 20 and the work 20 is reduced, and even a work 20 having a diameter difference at both ends or a work having an unbalanced shape is less likely to be caught, and the setup change work becomes easy.

In particular, here, since each rail 7 and each guide 11 are formed of round bars, line contact or point contact with the work 20 is achieved. Therefore, the frictional resistance is reduced and the work 20 can be rolled smoothly.
Further, since the surface of each round bar is plated, the frictional resistance becomes smaller and the sliding becomes better.

The rail and the guide are not limited to the round bar, and may be a member having a circular cross section only at a portion in contact with the work. The end of the plate may be formed in a circular shape instead of a separate member. As the work contact portion, a ridgeline portion of a member having corners instead of a circular portion can also be adopted.
Further, in the invention relating to the work contact portion, the configuration in which the rail and the guide are provided for each moving body so that the height can be adjusted can be omitted. For example, even with the conventional work stocker as shown in FIG. 2, it is possible to prevent catching by adopting a work contact portion for the rail or guide.
The moving block does not have to be half-split. Further, if the slide position of the rail or the guide can be changed, a moving body having a non-block shape may be adopted.
Further, depending on the size and shape of the work, it is possible to support the rails and guides by using three or more moving bodies. That is, the number of moving bodies may be five or more.
In addition, the number of support rods may be three or more, and a rod shape other than the rod shape can be adopted as long as the moving body is slidably supported.

1 ... Work stocker, 2 ... Support rod, 3 ... Adjustment bolt, 4A, 4B ... Moving block, 6 ... Plate, 7 ... Rail, 7a ... Work contact part, 8 ... Stopper, 10 ...・ Long hole, 11 ・ ・ Guide, 11a ・ ・ Work contact part, 20 ・ ・ Work, 21 ・ ・ Maximum diameter part, 22 ・ ・ Minimum diameter part.

Claims (7)

A chute-type work stocker that supports a plurality of shaft-shaped workpieces in a parallel state in which the axes are parallel to each other and is inclined downward to one side in the direction orthogonal to the axes.
At least four moving bodies that can slide parallel to the axis and can be fixed at any slide position.
A rail that is provided on at least a pair of moving bodies so as to be inclined downward in a direction orthogonal to the axis, and has a stopper at the downward end so that the height in the vertical direction can be adjusted.
Each of the other at least a pair of moving bodies of the moving body is provided with a downward inclination in a direction orthogonal to the axis line, and includes a guide whose height in the vertical direction can be adjusted.
By adjusting the slide position of the pair of moving bodies and adjusting the height of each of the rails, the work can be supported from below by each of the rails.
A work characterized in that each guide can abut on both end faces in the axial direction of the work by adjusting the slide position of the other pair of moving bodies and adjusting the height of each guide. stocker. The first aspect of the present invention, wherein each of the rails and the guides has a work contact portion extending linearly in the downward inclination direction, and each of the work contact portions can contact the work. Work stocker. The work stocker according to claim 2, wherein each of the rails and the guides is formed of a round bar. The work stocker according to any one of claims 1 to 3, wherein the surfaces of the rails and the guides are plated. A chute-type work stocker that supports a plurality of shaft-shaped workpieces in a parallel state in which the axes are parallel to each other and is inclined downward to one side in the direction orthogonal to the axes.
A rail that is provided so as to be inclined downward in a direction orthogonal to the axis and has a stopper at the downward end so that the work can be supported from below.
Includes a guide that is provided so as to be inclined downward in a direction orthogonal to the axis and can abut on both end faces in the axial direction of the work.
The rail and the guide have a work contact portion extending linearly in the downward inclination direction, and each of the work contact portions can come into contact with the work. The work stocker according to claim 5, wherein the rail and the guide are each formed of a round bar and have the work contact portion. The work stocker according to claim 5 or 6, wherein the surfaces of the rails and the guides are plated.

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