JPH0728833U - Parts tray - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a structure capable of reducing the size and weight of a component tray for positioning and accommodating components while improving the strength and accuracy of the tray. [Structure] A positioning block 20 is mounted on the block housing surface 10 in an aligned state, and the positioning block 20 is formed in accordance with the shape of the parts to be housed. The block housing surface 10 includes a plurality of aligned block support portions having three fitting holes for fitting the positioning pins of the positioning block 20 and concave groove portions formed between the block support portions. . A peripheral wall 11 is formed around the block housing surface 10, and the overhanging portion 1 is formed at the upper end of the peripheral wall 11.
2 are connected. The overhanging portion 12 extends outward from the peripheral wall 11, and a skirt portion is connected to the lower portion of the overhanging portion. The skirt portion and the peripheral wall 11 are connected by ribs.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a component tray, and more particularly to a tray structure that can be manufactured at low cost and that can accurately position components of arbitrary shapes.

[0002]

[Prior art]

 Conventional component trays store a large number of components in an aligned state and are used as containers for transportation or as positioning members for supplying components to robots during the assembly process. There is. These component trays are usually used in various factories, warehouses, etc., having various structures according to the shapes and applications of the components. As the structure of the parts tray, for example, as described in Japanese Utility Model Laid-Open No. 2-23313, one in which individual parts can be put in a plurality of parts storage parts formed by partitioning the inside of the container into a grid shape is formed. is there. 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 are also proposals for positioning by.

[0003]

[Problems to be solved by the device]

 However, in order to efficiently store the parts in the above-mentioned conventional parts tray, it is necessary to use a tray that matches the shape of the parts, and it is necessary to manufacture a separate tray for each different part. Further, when a component is fixed to a shape by using a positioning jig, it is necessary to perform the positioning work using a plurality of jigs, and there is a problem that the component storage efficiency is low. In addition, in order to increase the positioning accuracy of parts, it is necessary to form the tray to be thick with a material that does not distort or expand and contract, which increases manufacturing costs and increases the volume of parts that can be accommodated and the weight when they are housed. When it becomes large and a large number of parts are handled, there is a problem in that it is difficult to secure the storage place and transfer work of the parts. Therefore, the present invention solves the above-mentioned problems, and an object thereof is a parts tray that can accommodate parts efficiently and is highly adaptable to the shape of parts, even if it is lightweight and thin. The purpose is to realize a structure that can secure sufficient positioning accuracy for parts.

[0004]

[Means for Solving the Problems]

 Means for Solving the Problems In order to solve the above-mentioned object, a means of the present invention is to provide a plurality of block supporting portions arranged in alignment so as to respectively support a block member for positioning and fixing components, and the block supporting portions. A component accommodating surface having a concave-convex surface having a concave groove formed between the block member and the block supporting portion is formed with an engaging element for positioning each other. .

Here, it is preferable that the component housing surface is formed of a plate-shaped body having a corrugated cross section formed by the block support portion and the concave groove portion.

Further, it is preferable that a plurality of sets of the engaging elements are formed at a plurality of positions in the facing portion of the block member and the block supporting portion that do not have rotational symmetry of two or more times.

Further, the engagement element is formed on a plurality of positioning pins formed on the bottom surface of the block member or the surface of the block support portion, and on the surface of the block support portion or the bottom surface of the block member. It is preferable that the positioning pins are formed to include a plurality of fitting holes corresponding to the positioning pins, and one of the positioning pins is formed to be slightly longer than the other positioning pins.

A peripheral wall portion that rises upward so as to surround the component accommodating surface, an overhanging portion that is formed to extend outward at an upper end of the peripheral wall portion, and a skirt that extends downward from the overhanging portion. It is preferable to provide a portion and a rib connecting the skirt portion and the peripheral wall portion.

Further, the rib is also connected to the overhanging portion, and a thick portion extending downward from the overhanging portion is formed in the rib at a substantially intermediate position between the skirt portion and the peripheral wall portion. Preferably.

[0010]

[Action]

 Since the positioning block is attached to each of the block support parts on the block support surface by the engaging elements, the positioning block is formed in a shape that matches the parts of arbitrary shape, so that multiple parts of arbitrary shape can be formed. It can be accommodated efficiently. Further, 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.

When the component housing surface is formed of a plate-shaped body having a corrugated cross section, the strength of the component housing surface can be further improved, and distortion and warpage of the resin at the time of resin molding can be prevented to improve dimensional accuracy.

If a plurality of engaging elements are arranged at positions that do not have rotational symmetry two or more times, the mounting direction of the positioning block can be uniquely determined, so that the positioning accuracy between the positioning blocks and the positioning can be improved. The reproducibility of the mounting position of the block can be improved.

By forming one of the positioning pins to be slightly longer than the other pins, it is possible to improve the mountability of the positioning block without making it difficult to remove the positioning block.

If the peripheral wall portion and the skirt portion are connected by ribs, the rigidity of the tray can be improved, and at the same time, distortion and warpage of the tray during resin molding can be prevented and dimensional accuracy can be improved.

By forming a thick portion that extends downward from the overhang portion in the rib at a substantially intermediate position between the skirt portion and the peripheral wall portion, the rigidity and forming accuracy of the tray can be further improved.

[0016]

【Example】

 Next, an embodiment of the parts tray according to the present invention will be described. FIG. 1 is a schematic perspective view showing the overall shape of this embodiment. This embodiment shows an example in which the resin tray is formed as a component tray for accommodating a precision component made of resin, and is entirely made of a hard resin containing glass fiber. Here, the positioning block 20 is a resin block having a substantially rectangular parallelepiped shape, and is mounted in an aligned state on a block housing surface 10 described later. A peripheral wall portion 11 is provided upright on four sides around the block accommodation surface 10, and an upper end of the peripheral wall portion 11 is connected to an overhanging portion 12 that extends over the circumference.

A plurality of fixed shaft holes 13 are formed in the overhanging portion 12 at predetermined positions. This fixed shaft hole 13 is used to insert a fixed shaft attached to a carrier device when, for example, a component tray is placed on a conveyor such as a conveyor for transfer, or when it is accumulated in a component stocker or stacked at a predetermined place. It is for positioning or fixing the parts tray itself. The overhanging portion 12 is formed with a sorting opening 14 having a diameter similar to that of the fixed shaft hole 13. This opening 14 constitutes a mark that can be read by an optical sensor installed along the conveyance path or the like in order to confirm the lot number, type, etc. of the component. Plural pieces of information can be recorded in the selection opening 14 depending on the number of openings, the length of the openings, and the like. The axes of the fixed shaft hole 13 and the selection opening 14 are formed so as to pass through the projecting portion 12 and pass through the space between the peripheral wall portion 11 and a skirt portion 30 described later.

FIG. 2 shows the structure of the block housing surface 10 of the component tray. The block accommodating surface 10 is formed in a concave-convex shape (or a corrugated cross-section) having a plurality of block supporting portions 15 projecting upward in a plateau shape and a concave groove portion 19 formed between the block supporting portions 15. It is a plate. The planar shape of the block support portion 15 is a square shape with rounded corners, and each block support portion 15 is surrounded by an X groove 19x and a Y groove 19y which intersect with each other in the concave groove portion 19. The surface of the central portion of the block support portion 15 is a flat support surface, and fitting holes 16, 17 and 18 are formed at predetermined three places. The positional relationship between these fitting holes 16, 17 and 18 is such that only the fitting holes 16 are separated from the other fitting holes in a state where the fitting holes are arranged at the positions of the vertices of an equilateral triangle. The fitting holes are slightly displaced, and the fitting holes are arranged so as to come to the apexes of the isosceles triangle.

The block support portion 15 and the concave groove portion 19 are formed by making a thin plate uneven. In this structure, first, since the concave groove portion 19 is formed like a corrugated rib, the strength of the component housing surface 10 is significantly improved. In addition, since the surfaces of the high and low portions from the block support portion 15 to the concave groove portion 19 are all formed into a curved surface, the unevenness of strength is eliminated, and when the resin material is formed by molding, the shrinkage of the resin is made uniform. As a result, distortion and warpage are prevented. The amount of strain and warp can be further reduced because the thickness of the component housing surface 10 can be reduced by the above-described structure having increased strength.

FIG. 3A shows the shape of the positioning block 20 in an inverted posture. On the bottom surface 21 of the positioning block 20, positioning pins 22, 23, 24 are formed at the apexes of the isosceles triangles so as to fit into the fitting holes 16, 17, 18, respectively. Is made. 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 is formed. When this positioning block is formed by injection molding, it is usually possible to replace only the half mold to accommodate various parts.

As shown in FIG. 3 (b), the positioning pins 22, 23, 24 are each formed at a predetermined height from the bottom surface 21 and have a washer-like support with a diameter larger than the fitting hole. Base parts 22a, 23a, 24a, shaft parts 22b, 23b, 24b having a diameter protruding from the support base and having a diameter substantially matching the fitting hole, and a round head formed at the tip of the shaft part having the same diameter. 22c, 23c, 24c. The locating pin 22 and the locating pins 23 and 24 are provided with a supporting base portion and a diametrical shaft portion of the same size, but the head portion 22c of the locating pin 22 is about the head portions 23c and 24c of the locating pins 23 and 24. It is twice as long.

FIG. 4 shows how the positioning block 20 is attached to the block support portion 15. The positioning pins are fitted in the fitting holes 16, 17 and 18 of the block support portion 15, and the support base portions 22a, 23a and 24a of the positioning pins are in contact with the surface of the block support portion 15. . Here, the positioning pin 22 is in a state in which the head portion 22c slightly protrudes to the back surface side of the block support portion 15 through the fitting hole 16, and the tips of the head portions 23a and 24a of the positioning pins 23 and 24 are The fitting holes 17 and 18 are at the same height as the back side openings, or slightly retracted into the fitting holes. The support base portion formed on the positioning pin prevents the positioning block 21 and the surface of the block support portion 15 from coming into contact with each other by slipping, so that the surface of the block support portion 15 is distorted or warped. Even if it does, it does not convey the influence of the distortion or warpage to the positioning block.

Usually, when positioning and fixing by fitting a plurality of pins and holes, attachment and detachment become difficult if the fitting accuracy is increased to obtain the position accuracy. Even more so if the pins are made long enough for easy installation. 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 this embodiment, the length of the shaft portion having the same diameter is shorter than the depth of the fitting hole, and the head portion of the positioning pin 22 is formed to be long to facilitate the attachment / detachment of the block. And position accuracy. That is, when the positioning block 20 is attached to the block support portion 15, since the head 22a of the positioning pin 22 is long, it is easy to be caught in the fitting hole 16, and the length of the shaft portion having the same diameter of each positioning pin is short. Is easy to insert.

Further, when the positioning block 20 is attached to the block support portion 15, the same diameter shaft portions 22b, 23b, 24b of the positioning pin are fitted into the fitting holes, so that the positioning block and the block support portion are supported. The mounting accuracy with the parts is secured.

Further, when the positioning block 20 is detached from the state where it is mounted on the block support portion 15, the shaft portions 22b, 23b, 24b having the same diameter are formed shorter than the depth of the fitting hole, and each positioning is performed. Since the pin heads 22c, 23c, 24c are formed in a round shape, even if there is little play between the positioning pin and the fitting hole, it can be easily removed by pulling it up at an angle.

At the time of this removal, since the positioning pins 23 and 24 are formed at positions equidistant from the positioning pin 22, the positioning pin 22 is formed or the positioning pins 23 and 24 are formed. It can be removed smoothly by pulling either one up. 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. Further, since the head portion 22c of the positioning pin 22 protrudes below the rear surface side opening of the fitting hole 16, the positioning pin 22 is pushed out from the rear surface side of the block support portion 15 by a finger or the jig 26 shown in the drawing. This makes it possible to remove the positioning block more smoothly. The effect is the same even if the positioning pin and the fitting hole are formed on the positioning block and the block supporting portion in reverse.

The mounting structure using the positioning pin and the fitting hole completely fixes the positioning block when the positioning block is supported by substantially point contact between the support bases 22a, 23a, 24a and the surface of the block support portion 15. By using the minimum number of three-point support that can be achieved, both fixability and wearability are satisfied. Of course, the number of supporting points may be reduced as long as sufficient supporting force and positional accuracy can be obtained. Also, four or more support points may be provided if the mountability is sacrificed.

Since each of the support points of the positioning pin and the fitting hole is arranged at the apex position of the isosceles triangle as described above, the mounting direction of the positioning block is uniquely determined. This has an effect that the relative positional relationship between the plurality of positioning blocks formed by molding or cutting can be accurately obtained. The formation positions of the positioning pin and the fitting hole do not have to be limited to the apex positions of the isosceles triangle as described above, but on the bottom surface 21 of the positioning block and the surface of the block supporting portion 15, two or more rotational symmetry are performed. It is desirable to form so that it does not have the property. That is, by not having rotational symmetry of 360 ° or less, the positioning block 20 does not allow more than two types of mounting directions, and the reproducibility of mounting accuracy can be improved.

FIG. 5 shows the structure of the positioning block in the case of accommodating various parts in the above embodiment. Normally, as shown in FIGS. 1 to 4, one positioning block 20 is attached to one block support portion 15. However, when the parts are large, the positioning blocks 27, 28, 29 are provided in a plurality of block support portions. Form so that it can be mounted over. Here, it is not necessary to provide the positioning pins of each positioning block in correspondence with all the fitting holes formed in the plurality of block support portions 15, and in consideration of positioning accuracy and ease of mounting, the positioning block As in the case of 20, it is desirable to provide only three (27a, 27b, 27c, 28a, 28b, 28c, 29a, 29b, 29c). On the contrary, when accommodating small components, it is desirable to form a plurality of component mounting portions in one positioning block. In FIG. 5, plural kinds of positioning blocks are shown at the same time, but normally, only one kind 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 the positioning block can be formed in various shapes as described above according to the parts to accommodate them. The tray body and the positioning block are formed from 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. Further, by using a resin mixed with glass fiber (for example, resin-PC20 in which polycarbonate is mixed with 20 wt% of glass fiber), 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 is formed downward from the lower surface of the overhanging portion 12 that is connected to the upper end of the peripheral wall portion 11 and is formed so as to project outward. Ribs 31, 32 and 33 are formed in the space formed between the skirt portion 30, the peripheral wall portion 11 and the overhang portion 12. The ribs 31, 32, and 33 are thin plate-like bodies having arch-shaped lower contours that connect the skirt portion 30, the peripheral wall portion 11, and the overhanging portion 12 to each other and support each other. The ribs 31 and 32 are formed on each side of the rectangle of the tray main body so as to be somewhat densely packed in the central portion, and the rib 33 is formed such that the plate surface is 45 at both sides at the intersection of the short and long sides of the tray main body. It is formed to make an angle of °. The rib 32 includes a support stop portion 32a 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 projecting downward.

FIG. 7 shows this shape in detail. When a plurality of component trays are stacked, the support stopper 32a abuts on the inner edge of the projecting portion 12 'of the lower component tray and supports the entire tray. The ribs 31, 32, 33 are provided with a shaft-like portion 35 extending downward from the projecting portion 12 at a substantially central portion apart from both the peripheral wall portion 11 and the skirt portion 30. The shaft portion 35 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, 33 reinforce 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 the stress caused by shrinkage during molding, while dramatically increasing the strength against impacts from the side of the component tray and impacts applied to the peripheral edge of the component tray from above. The shaft-shaped portion 35 increases the connection force with the overhanging portion 12 and further strengthens the above-described action of the rib.

In this embodiment, as described above, a plurality of block supporting portions and concave groove portions formed between the block supporting portions are provided on the component housing surface to form an uneven thin plate shape, 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 uneven shape of the block support part and the concave groove part, more preferably by the corrugated shape, which is thin. Even a plate-shaped body can support the block with high accuracy. Therefore, it is possible to efficiently and accurately position a component having an arbitrary shape, and to make a lightweight component tray.

The structure of the peripheral wall portion 11, the overhanging portion 12, the skirt portion 30, and the ribs 31, 32, 33 formed around the component housing surface 10 further enhances the strength of the tray as a whole. Since it is possible to avoid distortion, warpage, etc. due to shrinkage during molding, it is possible to achieve both rigidity and shape accuracy. Moreover, since the rigid structure allows the tray to be thinned, the tray can be made lighter and the deformation during molding can be further reduced. Further, since the tray having the above structure can be manufactured by resin molding such as injection molding, the manufacturing cost can be relatively reduced.

[0037]

[Effect of device]

 As described above, according to the present invention, since the positioning block is attached to the plurality of block supporting portions of the block supporting surface by the engaging elements, respectively, the positioning block can be formed into a shape suitable for a component having an arbitrary shape. Therefore, it is possible to efficiently accommodate a plurality of arbitrarily shaped components. In addition, since the component housing surface is formed in the uneven surface shape having the block support 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.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall structure of an embodiment of a parts 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 showing a state in which a positioning block according to the embodiment is attached to a block support portion on a component housing surface.

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.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Component accommodation surface 11 Peripheral wall part 12 Overhang part 15 Block support part 16,17,18 Fitting hole 19 Recessed groove part 20 Positioning block 21 Bottom surface of positioning block 22,23,24 Positioning pin 22a, 23a, 24a Support base part 22b, 23b, 24b Same-diameter shaft portion 22c, 23c, 24c Head portion 30 Skirt portion 31, 32, 33 Rib 35 Shaft portion

Claims (6)

[Scope of utility model registration request] 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 tray, wherein a component accommodating surface having an uneven surface is provided, and engaging elements for mutually positioning are formed on the block member and the block support portion. 2. The component accommodating surface according to claim 1,
A component tray comprising a plate-shaped body having a corrugated cross section formed by the block support portion and the recessed groove portion. 3. A plurality of sets of the engagement elements according to claim 1, each of which is formed at a plurality of positions having no rotational symmetry of two times or more in a facing portion between the block member and the block support portion. A parts tray characterized by that. 4. The engagement element according to claim 1, wherein the engagement element is provided on a plurality of positioning pins formed on a bottom surface of the block member or a surface of the block support portion, and on a surface of the block support portion or a bottom surface of the block member. And a plurality of fitting holes corresponding to the positioning pins, wherein one of the positioning pins is formed to be slightly longer than the other positioning pin. 5. The peripheral wall portion rising upward so as to surround the component accommodating surface, and the protruding portion formed so as to protrude outward at an upper end of the peripheral wall portion according to claim 1.
A component tray comprising: a skirt portion extending downward from the overhang portion; and a rib connecting the skirt portion and the peripheral wall portion. 6. The rib according to claim 5, wherein the rib is also connected to the projecting portion, and the rib extends downward from the projecting portion at a substantially intermediate position between the skirt portion and the peripheral wall portion. A parts tray characterized by forming a thick part that extends.