JPH08156944A - Tray for part - Google Patents

Abstract

PURPOSE: To provide a tray for parts in which parts can be efficiently stored, and at the same time, which is rich in corresponding property to the shapes of parts, and has a structure wherein the positioning accuracy for parts can be sufficiently ensured even when parts are light-weight and thin, and in addition, can fix parts inside even when the trays are stacked in multiple stages. CONSTITUTION: For a tray for part, a positioning block 20 is respectively attached on the upper surface of a block-supporting part, and each part W is contained in the positioning block 20. On the bottom surface of the block- supporting part, a holding member 40 is attached, and the holding member 40 holds a part being contained in the tray for part on the lower side from the top, or prevents the part from slipping off, moving and being broken during transport while keeping a specified interval.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parts tray, and more particularly to a structure suitable for a parts tray which can be used to position and house small parts in an aligned state and to stack the parts in a multi-tiered manner.

[0002]

2. Description of the Related Art Some conventional parts trays accommodate a large number of parts in an aligned state and are also used as containers for conveying a large number of parts or supply parts to a robot or the like during an assembly process. It is also used as a positioning member. These component trays are usually used in various factories, warehouses, etc., having various structures according to the shapes and applications of the components. As a structure of the parts tray, for example, as described in Japanese Utility Model Laid-Open No. 2-23313, there is a structure in which individual parts are put in a plurality of parts accommodating parts formed by partitioning the inside of the container into a grid shape. . Further, as described in Japanese Utility Model Application Laid-Open No. 63-141195, a positioning jig is provided in which a positioning hole is provided on the bottom surface of a container, and a component arranged on the bottom surface is fitted and fixed in the hole on the bottom surface. There is also a proposal for positioning by.

[0003]

However, in order to efficiently store the components in the above-mentioned conventional component tray, a tray conforming to the shape of the component must be used, and a different tray is used for each different component. Had to be manufactured. In addition, when fixing a component according to its shape by using a positioning jig, it is necessary to perform positioning work using a plurality of jigs. There is a problem that the storage efficiency decreases. On the other hand, in order to increase the positioning accuracy of the parts, it is necessary to form the tray to be thick with a material with little distortion or expansion and contraction, so that the manufacturing cost rises and the volume of the parts to be housed and the weight at the time of housing increases. When handling a large number of parts, there is also a problem that it is difficult to secure a storage place and carry out the parts transfer operation. Further, there are cases in which trays containing components are stacked in multiple stages and transported by a truck or the like. In this case, the components may dance inside the trays, and the components may be damaged during transportation. Therefore, the present invention is to solve the above-mentioned problems, and its problem is a parts tray that can accommodate parts efficiently and is highly adaptable to the shape of parts, and even if it is lightweight and thin, It is to realize a structure that can sufficiently secure the positioning accuracy, and further to realize a structure that can fix components inside even when they are stacked in multiple stages.

[0004]

Means for Solving the Problems In order to solve the above problems, the present invention has a means for supporting a block member for positioning and fixing components, and a plurality of blocks arranged in alignment. A component accommodating surface formed in a surface uneven shape having a supporting portion and a concave groove portion formed between the block supporting portions is provided, and the block member and the contact surface of the block supporting portion are mutually provided with each other. A first engaging element for positioning is formed, and a second engaging element that allows a pressing member for restricting parts to be attached is provided on the back surface of the block support portion.

In this case, the first engaging element is formed with an engaging projection formed on the block member and a fitting hole penetrating the block supporting portion so as to be fitted to the engaging projection. It is preferable that

Further, it is preferable that the second engaging element is a fitting hole formed so as to be fitted into an engaging projection formed on the pressing member.

[0007]

According to the first aspect of the present invention, since the parts are attached to the block supporting portion through the block member, the adaptability to various parts can be improved and the surface of the parts accommodating surface having an uneven surface is formed. By forming the tray, the rigidity and shape accuracy of the tray can be improved. Further, by mounting the pressing member on the back surface of the block supporting surface, when the trays are stacked in multiple stages, the pressing member of the upper tray can press the parts housed in the block member or regulate the moving amount. Therefore, even if the parts are stacked and transported, it is possible to prevent the parts from falling off, moving, and being damaged.

According to the second aspect, since it is only necessary to fit the engaging projection of the block member into the fitting hole formed in the block supporting portion, the block member can be easily positioned.

According to the third aspect of the present invention, the pressing member can be easily attached by simply fitting the engaging projection of the pressing member into the fitting hole formed in the block supporting portion, and the position of the component can be regulated.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the parts tray according to the present invention will be described below with reference to the drawings. FIG. 1 shows a plan view of this embodiment, which is formed in a dish shape as a whole. The present embodiment is a resin-made component tray for accommodating precision components, is integrally formed by injection molding of hard resin, and has a component accommodating surface 10 for accommodating components and a peripheral wall standing upright so as to surround its four circumferences. It is roughly configured by a portion 11 and an overhanging portion 12 formed on the outside of the peripheral wall portion 11 in a flange shape.

A block support portion 15 having a square shape in plan view, which is higher than the surrounding area, is formed in an aligned state on the component receiving surface 10. The X groove 19x and the Y groove are formed vertically and horizontally around the block support portion 15. Recessed groove portion 19 consisting of 19y
Are formed. A plurality of fixed shaft holes 13 are formed in the overhanging portion 12 at preset positions, and for example, when a component tray is placed on a conveyor such as a conveyor to be transferred, or is accumulated on a component stocker or is piled up at a predetermined place. In some cases, a fixed shaft attached to the carrier device can be inserted to position or fix the component tray itself.

A part of them is a selection opening 14, and the selection opening is installed along a conveyance path or the like so that the lot number and type of parts can be confirmed by the position and the number thereof. A readable mark is formed by the optical sensor. Further, a long hole 36 is formed near the outer periphery of the overhanging portion 12, so that a transfer hanger for transferring the component tray from the conveyor to the component take-out position can be inserted, and like the fixed shaft hole 13, the component tray can be inserted. A fixing frame or the like is inserted to position and fix itself.

FIG. 2 shows details of the component housing surface 10 of this embodiment shown in FIG. The block support portion 15 formed on the component housing surface 10 is provided with first fitting holes 16, 17 and 18, respectively, so that the first fitting holes 16 and 17 and 18 are arranged at respective vertices of an isosceles triangle. The fitting hole 16 is formed at a position slightly separated from the other two. In addition, the first fitting holes 16 and 1
Second fitting holes 16 ', 17', 1 inside 7 and 18
8'is also provided, and with respect to this second fitting hole, the second fitting hole 16 'is located at a position slightly apart from the other two,
They are formed at positions corresponding to the vertices of an isosceles triangle.

The block support portion 15 and the concave groove portion 19 are formed by molding a thin plate on the uneven surface. In this structure, first, since the recessed groove portion 19 is formed in a corrugated rib shape, the strength (rigidity) of the component housing surface 10 is significantly improved. Further, since the entire surface of the high and low portions from the top surface of the block support portion 15 to the bottom of the concave groove portion 19 is formed into a curved surface shape, unevenness in strength is reduced. This has the effect of making the sink mark uniform and prevents the component housing surface 15 from being distorted or warped. Here, since the wall thickness of the component housing surface 10 can be reduced by the above-described structure having the increased strength, a synergistic effect of further reducing the amount of distortion and warpage is produced.

FIG. 3A shows the shape of the positioning block 20 in a posture with the bottom surface 21 facing up (reversed posture). On the bottom surface 21 of the positioning block 20, the positioning pins 22, 2 are arranged at the apexes of the isosceles triangles so as to be fitted into the first fitting holes 16, 17, 18.
3, 24 are formed so as to project. The upper surface 25 of the positioning block 20 is processed with concave portions or convex portions having various shapes depending on the shapes of the components to be housed. For example, when accommodating a ring-shaped component, a ring-shaped groove or a cylindrical convex portion that fits in the ring is formed. When this positioning block is formed by injection molding, it is usually economical because only the half mold can be replaced to accommodate various parts.

As shown in FIG. 3B, the positioning pin 2
2, 23, and 24 are formed so as to project from the bottom surface 21 to a predetermined height, and the first fitting holes 16 and 1 are provided.
A washer-like support base 22 having a diameter larger than 7, 18
a, 23a, 24a and the same-diameter shaft portions 22b, 2 further protruding from the support base and having a diameter substantially matching the fitting hole.
3b and 24b. The locating pin 22 and the locating pins 23 and 24 are provided with a support base portion and a diametrical shaft portion of the same size, but the head portion 22c of the locating pin 22 is about twice as large as the head portions 23c and 24c of the locating pins 23 and 24. It has a length of.

As shown in FIG. 4, the positioning pins 22, 2
Reference numerals 3 and 24 denote first fitting holes 16 and 1 of the block support portion 15.
7, 18 and their supporting bases 22a, 23a, 2
4a is in contact with the surface of the block support portion 15. Here, the head 22c of the positioning pin 22 slightly protrudes to the back surface side of the block support portion 15 through the first fitting hole 16, and the head 23 of the positioning pins 23 and 24.
The tips of c and 24c are at the same height as the openings on the back side of the first fitting holes 17 and 18 or slightly retracted into the first fitting holes.

The support bases 22a, 23a, 24a are
The positioning block 21 and the surface of the block support portion 15 are prevented from coming into contact with each other by slipping, so that even if the surface of the block support portion 15 is slightly distorted or warped, the positioning block is affected by the distortion or warpage. I try not to tell you.

Normally, when positioning and fixing by fitting a plurality of pins and holes, it is difficult to attach and detach if the fitting accuracy is increased to obtain the position accuracy. This is especially true if the pins are made long enough for easy mounting. On the other hand, if the play between the pin and the hole is increased to facilitate the attachment / detachment, there are problems that the positioning accuracy decreases and the positioning block comes off at the same time when the parts are taken out.

However, in the present embodiment, the length of the shaft portion having the same diameter is made shorter than the depth of the fitting hole and only the head portion of the positioning pin 22 is formed to be long, thereby facilitating the attachment / detachment of the block and the positional accuracy. Is compatible. That is, when the positioning block 20 is attached to the block support portion 15, since the head portion 22c of the positioning pin 22 is long, it is easy to be caught in the first fitting hole 16 and the length of the coaxial diameter portion of each positioning pin is short. Can be easily inserted.

Further, when the positioning block 20 is already attached to the block support portion 15, the coaxial radial portions 22b, 23b, 24b of the positioning pin are fitted in the first fitting holes to support the positioning block and the block. The mounting accuracy of the parts is secured.

Further, when the positioning block 20 is removed from the state where it is attached to the block support portion 15, the coaxial diameter portions 22b, 23b, 24b are deeper than the depth of the first fitting hole.
Is formed short and the head 22 of each positioning pin is
Since c, 23c, and 24c are formed in a round shape, even if there is little play between the positioning pin and the first fitting hole, they can be easily removed by pulling them up at an angle.

When the positioning block 20 is removed, since the positioning pins 23 and 24 are equidistant from the positioning pin 22, either the forming side of the positioning pin 22 or the forming side of the positioning pins 23 and 24 should be removed. It can be removed smoothly by pulling it up a little. However,
In this embodiment, since the positioning pin 22 is formed long, it is easier to remove it by pulling up the positioning pin 22 side.

Further, since the head portion 22c of the positioning pin 22 projects below the opening on the back surface side of the first fitting hole 16, the positioning pin 22 is moved from the back surface side of the block support portion 15 with a finger or a jig. By pushing out, the positioning block 20 can be removed smoothly. The same effect can be obtained even if the positioning pin and the first fitting hole are formed on the positioning block and the block support portion in reverse.

In the mounting structure using the positioning pin and the first fitting hole, the support base portions 22a, 23a, 24a and the surface of the block support portion 15 are in a substantially point contact state.
When the positioning block is supported, the minimum number of three-point support that can completely fix the positioning block is used to satisfy both the fixability and the mountability. Of course, the number of supporting points may be reduced if sufficient supporting force and positional accuracy can be obtained. Also, four or more support points may be provided if the mountability is sacrificed to some extent.

Since the support points of the positioning pin and the first fitting hole are arranged at the apexes of the isosceles triangle as described above, the mounting direction of the positioning block is uniquely determined. This produces an effect that the relative positional relationship between the plurality of positioning blocks formed by molding or cutting can be obtained with high accuracy. The formation positions of the positioning pin and the first fitting hole need not be limited to the vertex positions of the isosceles triangle as described above, but the bottom surface 21 of the positioning block
It is desirable that the surface of the block support portion 15 is formed so as not to have rotational symmetry of two times or more. That is, by forming the positioning block 20 so as not to have rotational symmetry of 360 degrees or less, the positioning block 20 does not allow two or more types of mounting directions, and the reproducibility of mounting accuracy can be improved.

FIG. 4 shows a pressing member 40 fitted on the back surface of the block support portion 15 from the opposite side of the positioning block 20. The pressing member 40 includes three engaging projections 41, 42, 43 on the bottom surface of a substantially bottomed cylindrical main body.
The engaging projections 41, 42, 43 are fitted in the second fitting holes 16 ', 17', 18 ', respectively. The holding member 40 has a notch 44 formed at a position corresponding to the head 22c of the positioning pin 22 of the positioning block 20.
The pressing member 40 does not come into contact with the head portion 22c of the positioning pin 22 when the 0 is attached.

The pressing member 40 is a block of the lower component tray by a pressing member attached to the back surface of the block supporting portion of the upper component tray in a state where a plurality of component trays are stacked as described later. Pressing the part accommodated through the positioning block on the surface of the support part, or being present above the part with a predetermined interval so that the part does not move up or down more than necessary, This is to prevent the parts from falling off, moving, or being damaged when the tray is transported. The relationship between the engaging projection of the pressing member and the second fitting hole is exactly the same as the relationship between the positioning pin of the positioning block and the first fitting hole. Is true as is.

FIG. 5 shows the structure of the positioning block for accommodating various parts in the above embodiment. Normally, one positioning block 20 is attached to one block support portion 15 as shown in FIGS. 1 to 4, but when a large component is used, the positioning block 16'17'18 'is attached over a plurality of block support portions. To be formed. Here, the positioning pin of each positioning block does not have to be provided corresponding to all the fitting holes formed in the plurality of block support portions 15, and is similar to the positioning block 20 in view of positioning accuracy and ease of mounting. 3 for each positioning block (27a, 27b, 27
c, 28a, 28b, 28c, 29a, 29b, 29
c) It is desirable to provide. On the contrary, when accommodating a small component, it is desirable to form a plurality of component mounting portions in one positioning block. In FIG.
Although a plurality of types of positioning blocks are shown at the same time, normally only one type of these positioning blocks is aligned and used.

In the present embodiment, the tray main body having the component housing surface 10 is formed to a predetermined standard, and only the positioning block can be formed into various shapes as described above in accordance with the component. . The tray body and the positioning block are formed from various resin materials by injection molding or the like. For example, ABS resin, acrylic resin, polycarbonate or the like can be used. Also,
Resin mixed with glass fiber (for example, resin P mixed with 20 wt% of class fiber in polycarbonate
By using C20, the shape accuracy and strength can be further improved.

FIG. 6 shows a front view and a side view of the component tray of this embodiment. A skirt portion 30 that extends substantially parallel to the peripheral wall portion 11 is formed downward from the lower surface of the protruding portion 12 that is connected to the upper end of the peripheral wall portion 11 and is formed to project outward. This skirt portion 30, peripheral wall portion 1
The rib 3 is provided in the space formed between the protrusion 1 and the overhang 12.
1, 32, 33 are formed. Ribs 31, 32, 3
3 is a thin plate having an arch-shaped lower contour that connects the skirt portion 30, the peripheral wall portion 11 and the overhanging portion 12 to each other.
Support each other. The ribs 31 and 32 are formed so as to be more or less closely packed in the central portion on each side of the rectangular contour of the tray body, and the rib 33 has its plate surface on the surface of the peripheral wall portion on both sides at the portion where the short and long sides of the tray body intersect. It is formed to form an angle of 45 degrees. Rib 32
Is provided with a support stop portion 32a having a shape that extends vertically downward from the converging lower end portion of the arch and extends toward the chamfered portion of the peripheral wall portion 11. A raised bottom portion 34 is provided outside the connecting portion between the peripheral wall portion 11 and the component housing surface 10 in a shape protruding downward.

FIG. 7 shows this shape in detail. When stacking a plurality of component trays, the support stopper 3
2a contacts the inner edge of the overhanging portion 12 'of the lower component tray and supports the entire tray. Rib 3
A shaft-shaped portion 35 extending downward from the overhanging portion 12 is formed in each of 1, 32, and 33 at a substantially central portion apart from both the peripheral wall portion 11 and the skirt portion 30. This shaft part 3
5 is a portion having a diameter larger than the thickness of other portions of the rib. This portion is not limited to the axial shape and may be formed thicker than the other portions.

The skirt portion 30 and the ribs 31, 32, 3
3 reinforces the peripheral wall portion 11 to prevent distortion, warpage, etc., while improving the strength of the entire component tray. The thin plate-shaped ribs relieve stress due to shrinkage at the time of molding, and dramatically increase the strength against impacts from the side of the component tray and impacts applied to the peripheral portion of the component tray from above. The shaft-like portion 35 increases the connection force with the overhanging portion 12 and further strengthens the above-described action of the rib.

FIG. 8 shows a state in which the component trays of this embodiment are stacked in multiple stages. The trays are stacked so that they fit together by the structure shown in FIG. In each tray, the positioning block 20 is mounted on the surface of the block support portion 15 as described above, the component W is accommodated in the positioning block 20, and the pressing member 40 is mounted on the back surface of the block support portion 15. Has been.
Since the pressing member 40 attached to the upper tray holds the upper surface of the component W accommodated in the lower tray or exists slightly apart from the upper surface of the component W, the component tray is Even if the parts W are transported in a stacked state, the parts W do not separate from or move from the positioning block, and the parts are not damaged due to these.

As for the above-mentioned pressing member, like the one described for the positioning block in FIG. 5, an integrated pressing member may be attached over a plurality of block supporting portions, or it may be attached to one block supporting portion. The pressing member may be provided with a plurality of pressing portions capable of pressing a plurality of components and restricting their positions.

In the present embodiment, as described above, a plurality of block supporting portions and concave grooves formed between them are provided on the component accommodating surface to form an uneven thin plate, and the positioning block is attached to and detached from the block supporting portion. Since the mounting block can be mounted so as to be compatible with various parts by the shape of the positioning block, the strength of the part housing surface 10 is ensured by the concavo-convex shape of the block supporting portion and the concave groove portion, more preferably by the corrugated shape thereof, and it is thin. Even a plate-shaped body can support the block with high precision. Therefore, it is possible to efficiently and accurately position a component having an arbitrary shape, and to provide a lightweight component tray.

Then, the peripheral wall portion 11, the projecting portion 12, the skirt portion 30 and the rib 3 formed around the component housing surface 10.
With the structure including 1, 32, 33, the strength of the entire tray can be further increased, and distortion and warpage caused by shrinkage at the time of molding can be avoided, so that both rigidity and shape accuracy are achieved. be able to. Moreover, since the above-described rigid structure allows the tray to be thinned, it is possible to reduce the weight of the tray and further reduce the amount of deformation during molding. In addition, since the high-precision tray can be manufactured by resin molding such as injection molding with the above structure, the manufacturing cost can be relatively reduced.

[0038]

As described above, according to the present invention, the positioning block is attached to each of the plurality of block supporting portions of the block supporting surface by the engaging elements, so that the positioning block has a shape suitable for a component having an arbitrary shape. By forming the, it is possible to efficiently accommodate a plurality of parts having an arbitrary shape. In addition, since the component housing surface is formed in the uneven surface shape having the block supporting portion and the concave groove portion, the strength and accuracy of the component housing surface can be improved, and the weight of the tray can be reduced. Further, since the pressing member is attached to the back surface side of the block supporting portion, it is possible to prevent the parts from falling off, moving, or being damaged even when transported in a stacked state of multiple stages.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of a component tray according to the present invention.

FIG. 2 is a partial plan view (a) showing a structure of a component housing surface and a partial cross-sectional view (b) showing a state cut along line BB in FIG.

FIG. 3 is a perspective view (a) showing a structure of a positioning block and an enlarged view (b) showing a shape of a positioning pin in the embodiment.

FIG. 4 is an enlarged cross-sectional view (a) showing a mounting portion of a positioning block and a pressing member and a plan view (b) showing a shape of the pressing member in the embodiment.

FIG. 5 is an explanatory diagram showing various configuration examples of a positioning block.

FIG. 6 is a front view (a) and a side view (b) of the same embodiment.

FIG. 7 is an enlarged cross-sectional view showing in detail the structures of the peripheral wall portion, the overhanging portion, the skirt portion and the ribs in the embodiment.

FIG. 8 is a partial cross-sectional view showing a state in which the component trays of the embodiment are stacked in multiple stages.

[Explanation of symbols]

 10 Component Housing Surface 11 Peripheral Wall 12 Overhang 15 Block Support 16, 17, 18 First Fitting Hole 16 ', 17', 18 'Second Fitting Hole 19 Recessed Groove 20 Positioning Block 22, 23, 24 Positioning Pin 40 Holding member 41, 42, 43 Engaging protrusion

Claims (3)

[Claims] 1. A plurality of block support portions, each of which is formed so as to be able to support a block member for positioning and fixing a component, and arranged in an aligned state, and a concave groove portion formed between the block support portions. A component accommodating surface having an uneven surface is provided, and a first engaging element for positioning each other is formed on the contact surface of the block member and the block supporting portion, A component tray provided with a second engagement element on the back surface thereof to which a pressing member for regulating a component can be attached. 2. The first engagement element according to claim 1, wherein the first engagement element penetrates the engagement protrusion formed on the block member and the block support portion formed so as to be fitted to the engagement protrusion. A parts tray that is a fitting hole. 3. The component tray according to claim 1, wherein the second engaging element is a fitting hole formed so as to be fitted into an engaging projection formed on the pressing member. .