JP2019218064A - tray - Google Patents

Abstract

To provide a tray capable of controlling stack height lower than ever before.SOLUTION: A tray 10 is formed by surrounding, with side walls 20 and 21, a corrugated wall 14 which is curved or bent like waves and in which portions between neighboring waves are served as work-piece accepting grooves 40. A lower surface of the corrugated wall 14 is positioned above lower surfaces of the side walls 20 and 21. When two trays 10 and 10 are stacked through 180° turning, an upper part of the tray 10 on a lower stage side fits in the side walls 20 and 21 of the tray 10 on an upper stage side, and lower peaks of the corrugated wall 14 of the tray 10 on the upper stage side is positioned immediately above upper peaks of the corrugated wall 14 of the tray 10 on the lower stage side.SELECTED DRAWING: Figure 10

Description

  The present disclosure relates to a tray having a corrugated wall with a plurality of workpiece receiving grooves side by side.

  Heretofore, as this type of tray, there has been known a tray in which a columnar work or a disc-shaped work is stacked and formed into a column shape while being received in a work receiving groove (for example, see Patent Reference 1).

JP-A-6-67333 (FIGS. 1, 2 and 4)

  There is a demand for the development of a tray in which the height at the time of stacking is reduced in comparison with the conventional tray described above.

  The invention of claim 1 made in order to solve the above-mentioned problem is a tray comprising a corrugated wall which is curved or bent into a corrugated shape, and has a plurality of work receiving grooves between adjacent corrugated walls. The lower surface of the corrugated wall is located above the lower surface of the side wall, and when the trays are turned 180 degrees and stacked one on top of the other, the upper portion of the lower tray is placed inside the side wall of the upper tray. A tray that is received and has a lower peak portion of the corrugated wall of the upper tray located directly above an upper peak portion of the corrugated wall of the lower tray.

  The invention according to claim 2 is the tray according to claim 1, wherein the cross section of the corrugated wall has a triangular waveform.

  According to a third aspect of the present invention, an upper surface recess opening upward is formed at one of a first position and a second position which are point-symmetric with respect to the center of the planar shape of the tray, and An engaging projection protruding downward is formed, and when the trays are turned 180 degrees and stacked one on another, the engaging projection of the upper tray is the upper surface recess of the lower tray. Is received, the upper tray is parallel to the lower tray, and when the trays are stacked in the same direction, the engaging projections of the upper tray are moved to the lower tray. 3. The tray according to claim 1, wherein the upper tray is inclined with respect to the lower tray in contact with an upper surface of the lower tray. 4.

  The invention according to claim 4 is the tray according to claim 3, wherein the tray has a rectangular shape in plan view, and the upper surface concave portion and the engaging projection are arranged on a pair of long sides.

[Invention of claim 1]
2. The tray according to claim 1, wherein when the trays are turned 180 degrees and stacked, the upper portion of the lower tray is received inside the side wall of the upper tray and the upper peak portion of the corrugated wall of the lower tray. Is located directly above the lower peak portion of the corrugated wall of the upper tray. As a result, the lower peak portion of the upper tray enters the gap between the works received in the work receiving grooves of the lower tray, thereby reducing dead space and suppressing the height of the tray when stacked. Can be.

[Invention of claim 2]
In the tray according to the second aspect, since the cross section of the corrugated wall has a triangular wave shape, a work having a circular vertical cross section can be received in a centered state.

[Invention of claim 3]
In the tray according to the third aspect, when the trays are turned one another by 180 degrees and stacked one on the other, the engaging projections of the upper tray are received in the upper surface recesses of the lower tray, and the upper tray is moved to the lower tray. Be parallel to the tray. On the other hand, when the trays are stacked with the same orientation, the engaging projections of the upper tray abut against the upper surface of the lower tray, and the upper tray is tilted with respect to the lower tray. Therefore, it can be noticed that the trays are stacked in the same direction.

[Invention of Claim 4]
In the tray according to the fourth aspect, the upper surface concave portion and the engaging projection are arranged on the pair of long sides of the flat rectangular shape. When the trays are stacked in the same direction, the inclination of the upper tray is increased, and it can be easily noticed that the trays are stacked in the same direction.

Perspective view of the upper surface side of the tray according to the embodiment of the present disclosure Perspective view of the lower side of the tray Perspective view of a pair of trays in which the marks are opposed and opposed. Side sectional view of stacked trays Perspective view of partially broken trays stacked Perspective view of partially broken trays stacked Perspective view of partially broken trays stacked Pallet perspective view Perspective view of trays stacked on a pallet Side sectional view of trays stacked on pallets Perspective view of a pair of trays with the marks facing the same direction Side sectional view of a pair of trays with the marks facing in the same direction Perspective view of partially broken trays stacked in the same direction Perspective view of partially broken trays stacked in the same direction Side view of partially broken trays stacked in the same orientation

  Hereinafter, an embodiment of the tray 10 will be described with reference to FIGS. 1 to 15. As shown in FIG. 1, the tray 10 of the present embodiment has a structure in which a tray main body 16 having a corrugated wall 14 sandwiched between a pair of inner side walls 15, 15 is surrounded by side walls 20, 21.

  The corrugated wall 14 has a structure in which a strip-shaped plate that is long in the first horizontal direction H1 is bent in a triangular wave shape such that the valley folds 11 and the mountain folds 12 are arranged in the first horizontal direction H1. In addition, the opening angles of the inclined plates 13, 13 on both sides of the valley fold 11 and the opening angles of the inclined plates 13, 13 on both sides of the mountain fold 12 are both at a fixed angle of 90 to 130 degrees. . Further, as shown in FIG. 4, the valley fold 11 has a chamfered structure having a horizontal bottom plate 11 </ b> A between a pair of adjacent inclined plates 13, 13. On the other hand, the mountain fold portion 12 does not include a portion corresponding to the bottom plate portion 11A, and has a structure in which the inclined plate portions 13 intersect with each other.

  As shown in FIG. 1, a plurality of work receiving grooves 40 are formed between adjacent waves in the corrugated wall 14. In other words, the V-groove portion of the corrugated wall 14 formed by the valley fold portion 11 and the inclined plates 13 on both sides thereof forms a plurality of work receiving grooves 40. The plurality of work receiving grooves 40 are arranged at a constant pitch P in the first horizontal direction H1. In the present embodiment, the number of the work receiving grooves 40 is an odd number, but may be an even number.

  A complementary plate 24 projects from the upper end of one inclined plate portion 13 in the work receiving groove 40 at one end of the corrugated wall 14, and the upper end of the side wall 21 is connected to the distal end of the complementary plate 24. On the other hand, the upper end of the side wall 21 is directly connected to the upper end of one inclined plate portion 13 in the work receiving groove 40 at the other end of the corrugated wall 14. An arrow-shaped mark 24A pointing outward is formed in the center of the complementary plate 24 in the second horizontal direction H2 orthogonal to the first horizontal direction H1.

  The size of the complementary plate 24 in the first horizontal direction H1 is substantially half of one pitch P in which the plurality of work receiving grooves 40 are arranged, that is, “１ ／ pitch”. That is, if one pitch is P and the number of the work receiving grooves 40 is n, the total length L of the corrugated wall 14 including the complementary plate 24 in the first horizontal direction H1 is:

  L = P × n + ／ · P

  It has become. Thus, the center position of the corrugated wall 14 in the first horizontal direction H1 (also the center position of the entire tray 10 in the first horizontal direction H1) is located in the middle of the valley fold portion 11 and the mountain fold portion 12 which are closest to it. Have been. In other words, the center position is located at a position shifted by 1/4 pitch from the valley fold 11 and the mountain fold 12 closest thereto. As a result, as shown in FIG. 3, when another tray 10 is rotated by 180 degrees with respect to the tray 10 and the centers of the trays 10 and 10 in the first horizontal direction H1 are aligned, the lower tray 10 The valley folds 11 and the mountain folds 12 of the upper tray 10 are displaced by ピ ッ チ pitch in the first horizontal direction H1 with respect to the valley folds 11 and the mountain folds 12 of FIG. As shown in FIG. 2, the mountain fold 12 of the upper tray 10 is located directly above the valley fold 11 of the lower tray 10, and the upper tray 10 is positioned directly above the mountain fold 12 of the lower tray 10. Valley fold 11 is located.

  As shown in FIG. 7, the pair of inner side walls 15, 15 sandwiches the corrugated wall 14 in the second horizontal direction H <b> 2 and closes both ends of the work receiving groove 40. Further, as shown in FIG. 5, the lower end of the inner side wall 15 has a triangular waveform corresponding to the corrugated wall 14 and does not protrude below the corrugated wall 14. On the other hand, the upper end of the inner side wall 15 is located above the corrugated wall 14 and is horizontal. The height difference from the bottom surface of the work receiving groove 40 to the upper end of the inner side wall 15 is smaller than the width of the work receiving groove 40, for example. Thus, when the work 80 having at least the same outer shape as the groove width of the work receiving groove 40 is received in the work receiving groove 40, a part of the work 80 projects above the inner side wall 15.

  As described above, the tray main body 16 is formed by sandwiching the corrugated wall 14 between the pair of inner side walls 15, 15, and the tray main body 16 is surrounded by the side walls 20, 21 from all sides as shown in FIG. Have been. Hereinafter, in order to distinguish the side walls 20 and 21, the long side wall 20 is referred to as “long side wall 20” and the side wall 21 is referred to as “short side wall 21”.

  The upper ends of the pair of short side walls 21 and 21 are connected to one end and the other end of the corrugated wall 14 in the first horizontal direction H1 as described above. The lower end of the short side wall 21 is located below the lower surface of the corrugated wall 14. Specifically, as shown in FIG. 4, the short side wall 21 has a height two to three times the entire height of the corrugated wall 14, and is located below the corrugated wall 14 supported by the short side wall 21. , A space equal to or higher than the entire height of the corrugated wall 14 is formed.

  The entire short side wall 21 is inclined so as to go outward as it goes downward. The short side wall 21 is bent at substantially the same height as the lower surface of the corrugated wall 14, for example, and the inclination angle below the bent portion 21K is closer to the vertical than the upper inclination angle. A lower end flange 22 projects laterally from the lower end of the short side wall 21. As shown in FIG. 1, the outer ribs 23 communicating between the lower side flange 22 and the portion of the short side wall 21 below the bent portion 21 </ b> K are formed at both ends of the short side wall 21 in the second horizontal direction H <b> 2 and near both ends. Is formed with the position. The outer ribs 23 have a vertically long rectangular shape, and the upper surface is horizontal.

  At a plurality of positions of the short side wall 21 in the second horizontal direction H2, side recesses 21A are formed by partially recessing the short side wall 21 from the outside. As shown in FIG. 2, the side recess 21 </ b> A protrudes from the inner surface of the short side wall 21.

  As shown in FIG. 15, the side depression 21 </ b> A has a rectangular shape slightly narrowing downward, and is formed from a position closer to the upper end to a position closer to the lower end of the short side wall 21 over the bent portion 21 </ b> K. ing. As shown in FIG. 4, the bottom inside the side recess 21 </ b> A inclines in parallel with a portion of the short side wall 21 below the bent portion 21 </ b> K, and the side recess 21 </ b> A gradually rises upward from the bent portion 21 </ b> K. It is shallow. Further, as shown in FIG. 6, the step surface at the lower edge of the side depression 21A is inclined, so that dust and the like hardly accumulate.

  As shown in FIG. 1, the pair of long side walls 20, 20 are arranged beside the inner side walls 15, 15. As shown in FIG. 7, the upper ends of the long side wall 20 and the inner side walls 15 are connected to each other via a horizontal ceiling wall 29. In addition, the long side wall 20 is inclined from the top to the lower end at the same constant inclination angle as that of the portion below the bent portion 21K of the short side wall 21. Further, as shown in FIG. 2, the lower end of the long side wall 20 is arranged at the same position as the lower end of the short side wall 21. The above-described lower end flange 22 is formed on the entire lower end of the tray 10 and projects laterally from the lower end of the long side wall 20.

  As shown in FIG. 1, side depressions 20 </ b> A are formed at a plurality of positions of the long side wall 20 in the first horizontal direction H <b> 1. The side depressions 20 </ b> A extend from the upper end of the long side wall 20 to a position closer to the lower end, and the upper end is open to the upper surface of the long side wall 20. In addition, the step surface at the lower edge of the side depression 20A is also inclined similarly to the above-described side depression 21A.

  As shown in FIG. 2, the opposing surfaces of the long side wall 20 and the inner side wall 15 are connected by a plurality of reinforcing ribs 27. Except for a part described below, the reinforcing ribs 27 are formed from the lower end apex of the triangular portion of the inner side wall 15 corresponding to the valley fold portion 11 of the corrugated wall 14 to the ceiling wall 29. As shown in FIG. 7, the lower surface of the reinforcing rib 27 is horizontal at a position above the lower surface of the valley fold 11 in the corrugated wall 14.

  As shown in FIG. 3, on one side of the corrugated wall 14 in the second horizontal direction H <b> 2 of the tray 10, for example, the second valley folded portion 11 counted from the end of the corrugated wall 14 on the complementary plate 24 side is formed. The position (ie, a position 2.5 pitches (2.5P) away from the end of the corrugated wall 14 on the complementary plate 24 side) and the third valley fold 11 counted from the opposite end of the complementary plate 24 (Ie, a position three pitches (3P) away from the end of the corrugated wall 14 opposite the complementary plate 24) is provided with an engagement protrusion 26 instead of the reinforcing rib 27 described above. As shown in FIG. 7, the engaging projection 26 has a structure in which the reinforcing rib 27 extends downward, protrudes below the lower surface of the valley folded portion 11, and the lower surface is horizontal.

  As shown in FIG. 3, on the other side of the corrugated wall 14 in the second horizontal direction H <b> 2 of the tray 10, for example, the upper end of a double wall composed of the inner side wall 15, the long side wall 20, and the ceiling wall 29 is provided. A pair of upper surface concave portions 25 are formed by being depressed. One of the upper surface concave portions 25 is, for example, a position shifted by half a pitch from the second valley fold portion 11 to the side farther from the complementary plate 24 than the end of the corrugated wall 14 on the complementary plate 24 side (that is, the corrugated wall). 14 at a position three pitches (3P) away from the end on the side of the complementary plate 24), and the other upper surface recess 25 is, for example, the second one counted from the end of the corrugated wall 14 on the side opposite to the complementary plate 24. At a position shifted by half a pitch from the valley fold 11 to the side away from the complementary plate 24 (that is, a position 2.5 (2.5P) pitch away from the end of the corrugated wall 14 on the side of the complementary plate 24). I have.

  That is, the above-described upper surface concave portions 25, 25 and the engaging protrusions 26, 26 are divided into one and the other of the first position and the second position that are point-symmetric with each other when the tray 10 is rotated by 180 degrees. Are located. As a result, as shown in FIG. 5, when the trays 10 are turned 180 degrees and stacked one on another, the engaging projections 26, 26 of the upper tray 10 are received in the upper recesses 25, 25 of the lower tray 10. You. The amount of downward protrusion of the engaging projection 26 with respect to the lower surface of the reinforcing rib 27 is equal to or smaller than the amount of depression of the upper surface concave portion 25 with respect to the upper surface of the ceiling wall 29. Thereby, as shown in FIG. 6, when the engaging projection 26 is received in the upper surface concave portion 25, the lower surface of the reinforcing rib 27 comes into contact with the upper surface of the ceiling wall 29. In this state, the upper surface of the outer rib 23 of the lower tray 10 abuts on the lower surface of the lower flange 22 of the upper tray 10. Further, as shown in FIG. 7, the protruding portion of the inner side surface recess 20A of the upper tray 10 fits into the outer side surface recess 20A of the lower tray 10 and The upper and lower trays 10, 10 are positioned in both the first horizontal direction H1 and the second horizontal direction H2.

  The configuration of the tray 10 according to the present embodiment has been described above. Next, the operation and effect of the tray 10 will be described. FIG. 8 shows a pallet 90 used for transporting the tray 10. The pallet 90 has a rectangular shape corresponding to the planar shape of the tray 10, and has a pair of fork insertion holes 91, 91 penetrating in the short direction. Further, a step surface 92 is formed on the outer edge of the upper surface of the pallet 90, and a pedestal portion 93 inside the step surface 92 is stepped and higher.

  The tray 10 is placed on the pallet 90 such that the pedestal 93 is fitted inside the long side wall 20 and the short side wall 21. Then, both the lower end flange 22 of the tray 10 and the stepped surface 92 of the pallet 90, and the bottom plate 11A of the tray 10 and the pedestal 93 of the pallet 90 abut, or one of them abuts and the other approaches. State.

  In this state, the work 80 is received in the work receiving groove 40 of the tray 10 on the pallet 90 as shown in FIGS. Specifically, the work 80 shown in FIGS. 9 and 10 is, for example, a metal disk, and is received in the work receiving groove 40 in a state of being stacked in a plurality of columns. In addition, a work 80 having the same outer diameter is received for each tray 10. The work 80 is centered by contacting the pair of inclined plates 13, 13 in the work receiving groove 40, and is maintained in an upright state in the work receiving groove 40 by the support of the inner side walls 15, 15. Is done.

  When the plurality of work receiving grooves 40 of the tray 10 are filled with the work 80, another tray 10 is stacked thereon, and when the work receiving grooves 40 of the tray 10 are filled with the work 80, the tray is further placed thereon. Another tray 10 is stacked. At this time, the plurality of trays 10 are alternately stacked 180 degrees so that the marks 24A of the upper and lower adjacent trays 10 are opposite to each other.

  Then, as shown in FIG. 6, the upper portion of the lower tray 10 protrudes into the inside of the side wall of the upper tray 10, and the upper tray 10 engages with the upper surface recesses 25, 25 of the lower tray 10. The protrusions 26 are received. Then, the reinforcing rib 27 abuts on the upper surface of the lower tray 10, and the upper tray 10 is parallel to the lower tray 10.

  At this time, as shown in FIG. 7, the protruding portion of the inner side surface recess 20A of the upper tray 10 is fitted into the outer side surface recess 20A of the lower tray 10. Thus, the upper and lower trays 10, 10 are positioned in the horizontal direction. Then, as shown in FIG. 10, the lower peak portion (that is, the lower peak portion of the corrugated wall 14 of the upper tray 10, just above the upper peak portion (that is, the mountain fold portion 12) of the corrugated wall 14 of the lower tray 10). And a valley fold 11). As a result, the lower peak portion of the upper tray 10 protrudes into the gap between the works 80, 80 which are received in the work receiving grooves 40 of the lower tray 10 and are adjacent to each other in the first horizontal direction H1. Space can be reduced, and the height of the trays 10 when stacked can be suppressed. Further, depending on the outer diameter of the work 80, the work 80 of the lower tray 10 can be stacked in a state where the lower surface of the corrugated wall 14 of the upper tray 10 is in contact with the work 80 of the lower tray 10, thereby reducing the dead space. Further reduction is achieved, and the height when stacking the trays 10 is suppressed.

  In addition, even when not in use, which does not receive the work 80, if the plurality of trays 10 are alternately stacked by changing the direction by 180 degrees, the trays 10 are stabilized in parallel with each other, and the trays 10 are The small gaps are formed so that they do not adhere to each other and the trays 10 are easily separated from each other.

By the way, as shown in FIG. 12, it is assumed that the marks 24A of the upper and lower trays 10, 10 are erroneously stacked with the same direction. In addition, if the sheets are erroneously stacked, the lower peak portion of the upper tray 10 abuts against the work 80 of the lower tray 10 as shown in FIG. 12 to reduce the dead space described above. Can not be done. However, in the tray 10 of the present embodiment, if the marks 24A of the upper and lower trays 10, 10 are erroneously stacked with the same direction, the engagement of the upper tray 10 as shown in FIGS. The protruding portion 26 is not received in the upper surface concave portion 25 of the lower tray 10, but comes into contact with the upper surface of the lower tray 10, and as shown in FIG. Tilt. Thereby, an error can be noticed. Further, in the tray 10 of the present embodiment, since the upper surface concave portion 25 and the engaging projection 26 are arranged on a pair of long sides of a flat rectangular shape, when the tray 10 is arranged on a pair of short sides. In comparison, when the trays 10 are erroneously stacked with the same orientation, the inclination of the upper tray 10 becomes large, so that an error can be easily noticed.
[Other embodiments]

  (1) The corrugated wall 14 of the tray 10 of the embodiment has a triangular wave shape, but is not limited to this, and the shape of the corrugated wall may be a sine wave shape. The part may have a different wave shape. Specifically, as in the case of the corrugated wall of the tray disclosed in Japanese Utility Model Application Laid-Open No. 6-67333, which is referred to in the related art, a tray having a corrugated wall in which arc-shaped grooves and flat portions are alternately repeated, The configuration of the above disclosure may be applied.

  (2) The work 80 received by the tray 10 of the embodiment is a disk, but may be a column or a cylinder.

  (3) The trays 10 of the above embodiment have the upper concave portion 25 and the engaging projection 26 so that the upper tray 10 is inclined when stacked in the same direction. The configuration may be such that the upper tray is not inclined with respect to the lower tray when stacking in the same direction without providing a portion corresponding to the collision portion 26. In this case, a configuration may be adopted in which the upper peak portion of the lower tray protrudes below the upper peak portion of the upper tray, so that the stacked height when not in use is reduced.

10 tray 14 corrugated wall 20 long side wall (side wall)
21 Short side wall (side wall)
25 upper surface concave portion 26 engaging protrusion 40 work receiving groove 80 work

Claims (4)

In a tray that is curved or bent into a waveform and surrounds a waveform wall with a plurality of work receiving grooves between adjacent waves by side walls.
The lower surface of the corrugated wall is located above the lower surface of the side wall,
When the trays are turned 180 degrees and stacked, the upper part of the lower tray is received inside the side wall of the upper tray, and the upper peak part of the corrugated wall of the lower tray. A tray in which the lower peak portion of the corrugated wall of the upper tray is located directly above the upper tray.   2. The tray according to claim 1, wherein the corrugated wall has a triangular cross section. One of a first position and a second position, which are point-symmetrical to each other with respect to the center of the planar shape of the tray, is formed with an upper surface recess that opens upward, and the other is a member that projects downward. A collision part is formed,
When the trays are turned 180 degrees and stacked one on the other, the engaging projections of the upper tray are received in the upper recesses of the lower tray, and the upper tray is Parallel to the tray,
When the trays are stacked in the same direction, the engaging projections of the upper tray abut on the upper surface of the lower tray, and the upper tray is moved to the lower tray. The tray according to claim 1, wherein the tray is inclined with respect to the tray.   4. The tray according to claim 3, wherein the tray has a rectangular planar shape, and the pair of long sides has the upper surface concave portion and the engaging protrusion disposed thereon.

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