JP2743060B2 - Parts tray - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component tray and, more particularly, to a structure suitable for a component tray capable of positioning and storing small components in an aligned state and further stacking the components in a multi-stage state.

[0002]

2. Description of the Related Art Some conventional component trays store a large number of components in an aligned state, and are also used as containers for transporting a large number of components, or supply components to a robot or the like during an assembly process. It is also used as a positioning member. These component trays are generally used in various factories and warehouses in various structures according to the shape and use of the components. As a structure of a component tray, as described in, for example, Japanese Utility Model Application Laid-Open No. 23233/1990, there is a component tray in which individual components are put into a plurality of component storage portions formed by partitioning the inside of a container into a mesh 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 the container, and the components arranged on the bottom surface are fitted and fixed to the holes on the bottom surface. There has also been proposed one that performs positioning.

[0003]

However, in order to efficiently store components in the above-mentioned conventional component tray, a tray matching the component shape must be used, and a separate tray is used each time a different component is used. Had to be made. Also, when using a positioning jig to fix a part according to its shape, it is necessary to perform positioning work using multiple jigs, and since the jig is installed around the part, There is a problem that the storage efficiency is reduced. On the other hand, in order to increase the positioning accuracy of parts, it is necessary to form the tray with a thick material with little distortion and expansion and contraction, so that the manufacturing cost rises and the storage volume and weight of the parts are increased. When handling a large number of components, there is also a problem that it becomes difficult to secure a storage space and to transport components. Further, there are cases where the trays containing the components are stacked in multiple stages and transported by a truck or the like. In this case, the components may dance inside the tray, and the components may be damaged during the transport. Therefore, the present invention is to solve the above-mentioned problem, and the problem is to provide a component tray that can efficiently accommodate components and is highly responsive to component shapes, and is lightweight and thin even if it is thin. It is an object of the present invention to realize a structure capable of sufficiently securing positioning accuracy, and to realize a structure in which components can be fixed inside even when stacked in multiple stages.

[0004]

Means for Solving the Problems In order to solve the above-mentioned problems, means devised by the present invention includes a plurality of block members formed so as to be capable of supporting block members for positioning and fixing components, and arranged in an aligned state. A component receiving surface formed in a surface uneven shape having a block support portion and a concave groove portion formed between the block support portions is provided, and the component receiving surface is moved from an edge of the block support portion to the concave groove portion. It is configured to be a corrugated plate-shaped body formed by resin molding, having a curved surface up to the bottom of the same, and configured to be able to stack the same type of component tray on the front and back with the components and the block member stored therein, The block support includes a first engagement element for positioning the block member on the front surface of the block support, and another component tray that is stacked downward on the back surface of the block support. A pressing member for regulating the contained the component is intended to provide a second engagement element that can be attached to.

[0005] In this case, the first engaging element is formed by an engaging projection formed on the block member and a fitting hole formed to fit the engaging projection and penetrating the block support portion. It is preferable that

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

[0007]

According to the first aspect of 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 element, so that the positioning block can be formed in a shape suitable for a component having an arbitrary shape. Thereby, a plurality of parts of arbitrary shapes can be efficiently accommodated.
In addition, since the component receiving surface is composed of a curved plate-shaped body formed by resin molding from the edge of the block support to the bottom of the concave groove, the strength and accuracy of the component receiving surface are improved. In particular, dimensional accuracy can be improved by preventing the occurrence of distortion and warpage of the resin during resin molding. Further, by attaching the holding member on the back surface of the block support surface, when the trays are stacked in multiple stages, the holding member of the upper tray holds the components housed in the block member, or regulates the moving amount of the components. Because it can be configured, even if stacked and transported, parts fall off,
Movement and breakage can be prevented.

According to the second aspect, it is only necessary to fit the engagement protrusion of the block member into the fitting hole formed in the block support portion, so that the positioning of the block member can be easily performed.

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

[0010]

Next, an embodiment of a component tray according to the present invention will be described with reference to the drawings. FIG. 1 shows the planar shape of the present embodiment, which is entirely formed in a dish shape. The present embodiment is a resin component tray for accommodating precision components. The component tray is integrally formed by injection molding of a hard resin, and has a component accommodating surface 10 for accommodating components, and a peripheral wall that stands upright so as to surround four circumferences thereof. It is roughly constituted by a portion 11 and a projecting portion 12 formed in a flange shape outside the peripheral wall portion 11.

On the component receiving surface 10, block support portions 15 each having a shape of a flat square raised from the periphery thereof are formed in an aligned state, and X and Y grooves 19x and Y grooves formed vertically and horizontally around the block support portions 15. 19y and the concave groove portion 19
Are formed. A plurality of fixed shaft holes 13 are formed in the overhang portion 12 at predetermined positions. For example, when a component tray is transferred on a conveyor or the like, or is accumulated in a component stocker or the like, or is stacked at a predetermined location. In such cases, the component tray itself can be positioned or fixed by inserting a fixed shaft attached to the transport device.

A part of the opening is a sorting opening 14, which is installed along a transport path or the like so that the lot number and type of parts can be confirmed by the position and number thereof. A mark that can be read by the read optical sensor. Further, an elongated hole 36 is formed near the outer periphery of the overhang portion 12 so that a transfer hanger for transferring the component tray from the conveyer to the component take-out position can be inserted therethrough. It is configured such that a fixing frame or the like is inserted to position and fix itself.

FIG. 2 shows details of the component receiving surface 10 of the embodiment shown in FIG. First fitting holes 16, 17, and 18 are respectively formed in the block support portion 15 formed on the component housing surface 10, and the first fitting holes 16, 17, and 18 are arranged so as to be disposed 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, 1
The inside of the second fitting holes 16 ′, 17 ′, 1
8 ′ is drilled, and the second fitting hole 16 ′ is also located at a position slightly apart from the other two holes in this second fitting hole.
Each is formed at a position corresponding to the vertex of an isosceles triangle.

The block support portion 15 and the concave groove portion 19 are formed by molding a thin plate on unevenness. In this structure, first, the strength (rigidity) of the component housing surface 10 is greatly improved by forming the concave groove portion 19 into a corrugated rib shape. In addition, since the surfaces 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 are all formed into a curved surface, the unevenness in strength is reduced. This has the effect of making sink marks uniform, and prevents distortion and warpage of the component housing surface 15. Here, since the thickness of the component housing surface 10 can be reduced by the above-described structure having 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 (reversed posture) with the bottom surface 21 facing upward. On the bottom surface 21 of the positioning block 20, positioning pins 22, 2 arranged at the vertices of an isosceles triangle with each other so as to fit into the first fitting holes 16, 17, 18.
3, 24 are formed so as to protrude. On the upper surface 25 of the positioning block 20, concave portions or convex portions of various shapes are machined depending on the shape of the component to be accommodated. For example, when accommodating a ring-shaped component, a cylindrical protrusion that fits into a ring-shaped groove or ring is formed. When this positioning block is formed by injection molding, it is usually economical to replace only the half mold to accommodate various parts.

As shown in FIG. 3B, positioning pins 2
The first fitting holes 16, 1, 2, 23 are formed so as to protrude from the bottom surface 21 to a predetermined height, respectively.
Washer-like support base 22 having a diameter larger than 7, 18
a, 23a, 24a, and the same diameter shaft portions 22b, 2 further projecting from the support base and having diameters substantially matching the fitting holes.
3b and 24b. The positioning pins 22 and the positioning pins 23 and 24 have a support base and a shaft having the same diameter. The head 22c of the positioning pin 22 is approximately twice as large as the heads 23c and 24c of the positioning pins 23 and 24. It has a length of

As shown in FIG. 4, the positioning pins 22, 2
3 and 24 are first fitting holes 16 and 1 of the block support 15.
7, 18 and their support bases 22a, 23a, 2
4a is in contact with the surface of the block support 15. Here, the head 22 c of the positioning pin 22 slightly protrudes toward the back surface side of the block support portion 15 through the first fitting hole 16, and the head 23 of the positioning pin 23, 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 are slightly retracted into the first fitting holes.

The support bases 22a, 23a, 24a are
Prevents the positioning block 21 and the surface of the block support portion 15 from coming into contact with each other, so that even if a slight distortion or warpage exists on the surface of the block support portion 15, the positioning block may be affected by the distortion or warpage. I try to hardly tell.

Normally, when positioning and fixing are performed by fitting a plurality of pins and holes, it is difficult to attach and detach when trying to improve the fitting accuracy and obtain the positional accuracy. Even more so if the length of the pin is made sufficiently long to facilitate installation. Conversely, if the play between the pin and the hole is increased to facilitate the attachment / detachment, there are problems such as a decrease in the positioning accuracy and a simultaneous removal of the positioning block when the component is taken out.

However, in this embodiment, the length of the same-diameter shaft portion is shorter than the depth of the fitting hole, and only the head of the positioning pin 22 is formed to be longer. Are compatible. That is, when the positioning block 20 is mounted on the block supporting portion 15, the head 22c of the positioning pin 22 is long, so that the positioning block 20 is easily hooked on the first fitting hole 16, and the length of the coaxial diameter portion of each positioning pin is short. Can be easily inserted.

When the positioning block 20 is already mounted on the block support portion 15, the coaxial diameter portions 22b, 23b and 24b of the positioning pins are fitted into the first fitting holes, so that the positioning block and the block support are supported. The mounting accuracy of the part is secured.

Further, when the positioning block 20 is removed from the state where the positioning block 20 is mounted on the block support portion 15, the coaxial diameter portions 22b, 23b, 24b are larger than the depth of the first fitting hole.
Are formed short, and the head 22 of each positioning pin is formed.
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, it can be easily removed by pulling up at a slight angle.

When the positioning block 20 is removed, since the positioning pins 23 and 24 are equidistant from the positioning pin 22, either the side on which the positioning pins 22 are formed or the side on which the positioning pins 23 and 24 are formed is moved. It can be removed smoothly by raising it slightly. However,
In this embodiment, since the positioning pin 22 is formed long, it is easier to remove the positioning pin 22 by pulling it up.

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

The mounting structure using the positioning pins and the first fitting holes is to make the point of contact between the support bases 22a, 23a, 24a and the surface of the block support 15 substantially point;
When the positioning block is supported, the minimum number of three points at which the positioning block can be completely fixed satisfies both the fixability and the mountability. Of course, if sufficient supporting force and positional accuracy can be obtained, the number of supporting points may be further reduced. In addition, four or more support points may be provided if the mountability is somewhat sacrificed.

Since the support points of the positioning pins and the first fitting holes 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 a relative positional relationship between a plurality of positioning blocks formed by molding or cutting can be accurately obtained. The position where the positioning pin and the first fitting hole are formed need not be limited to the apex position of the isosceles triangle as described above.
It is desirable to form them on the surface of the block support 15 so as not to have rotational symmetry more than twice. That is, since the positioning block 20 is formed so as not to have a 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 the mounting accuracy can be improved.

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

When a plurality of component trays are stacked as will be described later, the pressing member 40 is pressed by a pressing member attached to the back surface of the block supporting portion of the component tray on the upper side. Pressing a part housed via a positioning block on the surface of the support part, or existing above a predetermined distance from the part so that the part does not move unnecessarily up and down, This is to prevent parts from dropping, moving, or being damaged when the tray is transported. The relationship between the engaging projection of the holding 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. About as it is.

FIG. 5 shows the structure of a positioning block when various components are accommodated in the above embodiment. Normally, one positioning block 20 is mounted on one block support portion 15 as shown in FIGS. 1 to 4, but when components are large, positioning blocks 16'17'18 'are mounted over a plurality of block support portions. To be formed. Here, the positioning pins of each positioning block do not need to be provided corresponding to all the fitting holes formed in the plurality of block support portions 15, and are similar to the positioning block 20 in consideration of positioning accuracy and ease of mounting. In each of the three positioning blocks (27a, 27b, 27
c, 28a, 28b, 28c, 29a, 29b, 29
c) It is desirable to provide. Conversely, when accommodating small components, 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, usually only one type of these positioning blocks is used in alignment.

In this embodiment, the tray main body having the component housing surface 10 can be formed according to a predetermined standard, and only the positioning block can be formed into various shapes as described above in accordance with the components. . The tray body and the positioning block are formed using various resin materials as raw 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 in which 20 wt% of class fiber is mixed with polycarbonate)
By using C20, shape accuracy and strength can be further increased.

FIG. 6 shows a front view and a side view of the component tray of this embodiment. A skirt portion 30 extending substantially parallel to the peripheral wall portion 11 is formed downward from a lower surface of the overhang portion 12 connected to the upper end of the peripheral wall portion 11 and formed to project outward. The skirt portion 30 and the peripheral wall portion 1
1 and the space formed between the overhangs 12
1, 32 and 33 are formed. Ribs 31, 32, 3
Reference numeral 3 denotes a thin plate having an arch-shaped lower contour connecting the skirt portion 30, the peripheral wall portion 11, and the overhang portion 12, and
Support each other. The ribs 31 and 32 are formed so as to be slightly dense at the center of each side of the rectangular outline of the tray body, and the rib 33 is formed at the intersection of the short and long sides of the tray body so that its plate surface is on the surface of the peripheral wall on both sides. It is formed so as to form an angle of 45 degrees with respect to the angle. Rib 32
Is provided with a support stopper 32a that extends vertically downward from the converging lower end portion of the arch and widens over the chamfered portion of the peripheral wall portion 11. Outside the connecting portion between the peripheral wall portion 11 and the component housing surface 10, a bottom raising portion 34 is provided in a shape protruding downward.

FIG. 7 shows this shape in detail. When stacking a plurality of component trays,
Reference numeral 2a abuts on the inner edge of the overhang 12 'of the lower component tray to support the entire tray. Rib 3
At 1, 32, and 33, a shaft portion 35 extending downward from the overhang portion 12 is formed at a substantially central portion away from both the peripheral wall portion 11 and the skirt portion 30. This shaft 3
5 is a portion having a diameter larger than the thickness of the other portion of the rib. This portion is not limited to the shaft shape and may be formed thicker than other portions.

The skirt portion 30 and the ribs 31, 32, 3
Numeral 3 reinforces the peripheral wall portion 11 and improves the strength of the entire component tray while preventing distortion and warpage. The thin ribs relieve stress due to shrinkage during molding and dramatically increase the strength particularly against impacts from the side of the component tray and impacts applied to the peripheral edge of the component tray from above. The shaft portion 35 increases the connecting force with the overhang portion 12 and further enhances the above-described operation 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 as to fit each other by the structure shown in FIG. In each tray, the positioning block 20 is mounted on the surface of the block support 15 as described above, the component W is accommodated in the positioning block 20, and the pressing member 40 is mounted on the back of the block support 15. Have been.
The pressing member 40 attached to the upper tray presses the upper surface of the component W accommodated in the lower tray or exists slightly away from the upper surface of the component W. Even if the parts W are transported in a stacked state, the parts W do not come off or move from the positioning block, and the parts are not damaged due to these.

As for the pressing member, an integral pressing member may be mounted over a plurality of block supporting portions, similarly to that described for the positioning block in FIG. 5, or may be mounted on one block supporting portion. The pressing member may be provided with a plurality of pressing portions capable of pressing the plurality of components and controlling the position.

In this embodiment, as described above, a plurality of block support portions and a concave groove formed therebetween are provided on the component receiving surface to form an uneven thin plate, and the positioning block is attached to and detached from the block support portion. Since it can be mounted as possible, it is possible to cope with various components depending on the shape of the positioning block, and the strength of the component housing surface 10 is secured by the uneven shape of the block support portion and the concave groove portion, more preferably the waveform shape thereof, and it is thin. Even if it is a plate-like body, the block can be supported with high precision. Therefore, components of any shape can be positioned efficiently and accurately and a lightweight component tray can be obtained.

Then, the peripheral wall portion 11, the overhang portion 12, the skirt portion 30, and the ribs 3 formed around the component accommodation surface 10.
With the structure including 1, 32, and 33, the strength of the entire tray can be further increased, and distortion and warpage due to shrinkage during molding can be avoided, so that both rigidity and shape accuracy are achieved. be able to. In addition, since the rigid structure allows the tray to be thinner, it is possible to reduce the weight of the tray and to further reduce the deformation during molding. In addition, since the above-mentioned structure enables a high-accuracy tray to be manufactured by resin molding such as injection molding, the manufacturing cost can be relatively reduced.

[0038]

As described above, according to the present invention, since the positioning block is mounted on each of the plurality of block supporting portions of the block supporting surface by the engaging elements, the positioning block can be formed into a shape suitable for an arbitrary-shaped component. By forming, a plurality of parts of any shape can be efficiently accommodated. In addition, since the component housing surface is formed in a surface uneven shape having a block support portion and a 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 holding member is attached to the back surface side of the block support portion, even when transported in a state of being stacked in multiple stages, it is possible to prevent the components from falling off, moving, and being damaged.

[Brief description of the 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 the structure of the component housing surface in the embodiment, and a partial cross-sectional view (b) showing a state cut along the line BB of a.

FIG. 3A is a perspective view showing the structure of a positioning block in the embodiment, and FIG. 3B is an enlarged view showing the shape of a positioning pin.

FIGS. 4A and 4B are an enlarged cross-sectional view showing a mounting portion of the positioning block and the holding member in the embodiment, and a plan view showing the shape of the holding member.

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 embodiment.

FIG. 7 is an enlarged sectional view showing in detail a structure of a peripheral wall, an overhang, a skirt, and a rib in the embodiment.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Component accommodation surface 11 Peripheral wall part 12 Projection part 15 Block support part 16,17,18 1st fitting hole 16 ', 17', 18 '2nd fitting hole 19 Depression groove part 20 Positioning block 22,23,24 Positioning Pin 40 Pressing member 41, 42, 43 Engagement projection

Claims (3)

(57) [Claims] A block member for positioning and fixing a component is formed so as to be capable of supporting each of the block members, and has a plurality of block support portions arranged in an aligned state, and a concave groove formed between the block support portions. Providing a component receiving surface formed in an irregular shape on the surface, and providing the component receiving surface with an edge of the block support portion.
From the part to the bottom of the groove, by resin molding
It is composed of a formed corrugated plate-like body, and the same shape is accommodated in a state where the parts and the block member are housed.
The component tray is configured to be able to be stacked on the front and back, and the block support is provided on the surface of the block support.
A first engagement element for positioning the block member in, Oite downward on the back surface of the block support portion
The parts stored in another parts tray stacked on the
Parts tray push even characterized in that a second engagement element to allow mounting the member to win. 2. The first engaging element according to claim 1, wherein the first engaging element is formed to engage with the engaging protrusion formed on the block member, and penetrates the block supporting portion. A component tray having a fitting hole. 3. The component tray according to claim 1, wherein the second engaging element is a fitting hole formed to fit into an engaging projection formed on the pressing member. .