JPH0637226B2 - Parts supply tray - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a component supply tray used for transporting and transferring high-mix low-volume industrial parts, or for accurately transferring parts in the assembly process of a factory in a stationary state. Is.

Conventional configuration and its problems Conventionally, when transporting and transferring primary processed products such as resin parts, sheet metal stamped parts, small motors, printed circuit boards, connectors, etc. or partially assembled semi-finished industrial parts from factory to factory Or, when transferring in an assembly process in a factory, a cardboard box with a partition, a foam molded into the shape of the component, a product obtained by punching the foam into the component shape, or a wood or metal machined in accordance with the component shape. Vacuum molded product using a dedicated mold,
Alternatively, a casting or a metal plate machined in accordance with the shape of the component has been used. In the case of the corrugated cardboard box with the above-mentioned partition, there are drawbacks such that dust is likely to adhere to the storage parts, the load is apt to be lost, and the durability is low. or,
When a foam is used, there are drawbacks such as the waste of the foam adhering to the stored items, lack of durability, and high transportation cost. Further, a casting or a metal plate machined into a component shape may be used in a factory assembling process. Especially when performing automatic assembly, it is often used because the storage parts can be fixed accurately, but it becomes very expensive. Furthermore, with the method of using a tray that is vacuum-formed using a special mold made of wood or metal that has been machined according to the shape of the parts, the stored parts can be fixed with a certain degree of accuracy, so they can be transported from factory to factory or assembled in the factory. It can be used when assembling work manually. However, in the case of automatic assembly using an industrial robot, the accuracy is still insufficient. Moreover, strength, rigidity, durability, etc. were insufficient.

An object of the present invention is to solve the above-mentioned conventional drawbacks, and of course, when transporting and transferring high-mix low-volume industrial parts between plants, when a person assembles, or in an automatic assembly process using an industrial robot. It is an object of the present invention to provide a component supply tray in which assembled components are accurately placed and stored when used and which is inexpensive and has excellent strength and durability.

In order to achieve the above object, the component supply tray of the present invention,
A vacuum forming member having a plurality of recesses for controlling the parts to be housed and a step portion in the peripheral portion, and a synthetic paper having the same size as the outer shape of the step portion. A reinforcing member that prevents deformation and maintains the dimensional accuracy of the vacuum forming member, and a fastening unit that fastens and integrates the vacuum forming member and the reinforcing member at the step portion are provided.

Description of Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

That is, the present invention is composed of a vacuum forming member having a plurality of recesses for controlling the parts to be housed and a step portion in the peripheral portion, and a synthetic paper having the same size as the outer shape of the step portion, and is superposed on the back surface of the vacuum forming member. Component supply including a reinforcing member that prevents deformation of the vacuum forming member and maintains dimensional accuracy of the vacuum forming member, and a fastening unit that fastens and integrates the vacuum forming member and the reinforcing member at the step portion. It's a tray.

The thermoplastic resin film or sheet, polyethylene, polypropylene, ethylene-vinyl acetate copolymer,
Polyvinyl chloride, polystyrene, polyester, non-breathable non-breathable film or sheet of thermoplastic resin such as ionomer resin, but from the viewpoint of the positional accuracy and cost and rigidity of the storage parts intended by the present invention Polyvinyl chloride or polystyrene systems are preferred. The thickness of the film or sheet may be 0.2 to 3 mm, but 0.4 to 1.5 mm is preferable in terms of strength, rigidity, durability, vacuum formability and cost.

The reinforcing member means a material obtained by impregnating and strengthening pulp with synthetic resin.

Vacuum formed members refer to those obtained by ordinary vacuum forming, but since ordinary vacuum forming requires a special machined die, it can be used in the case of mass produced parts, but it can be used for high-mix low-volume parts. In this case, if a dedicated mold is made in accordance with the number of parts, the unit price of the parts supply tray that can be molded will be greatly increased, so the use is limited. Therefore, the parts to be housed themselves, a combination of commercially available standard square bars or round bars in a grid pattern, a commercially available standard plastic plate or a steel plate laser-cut, are used as a substitute for the mold and vacuum-formed. This method is preferable because the component supply tray made of the obtained molded product is superior in cost and production period.
In addition, since a normal vacuum forming machine is very expensive, if you use a vacuum forming machine that is usually used for skin packs, the equipment cost will be 1/5 to 1/10 if the same vacuum area is used. Vacuum forming is preferably performed using a machine.

The present invention is characterized in that the vacuum formed member obtained by vacuum forming and the reinforcing member are fastened and integrated with each other, but the fastening method is mechanically fastened with an adhesive, a double-sided tape, ultrasonic welding, rivets or the like. Any of these may be used.

Specific examples of the present invention will be described below.

FIG. 1 is a schematic diagram of a stepper motor used for a floppy magnetic disk.

FIG. 2 shows a conventional aluminum component supply tray used in the assembly process by cutting so that the stepper motor can be housed. FIG. 3 shows a conventional vacuum-molding die made of machined aluminum, which can accommodate a total of 20 stepper motors in four rows and five rows.
FIG. 4 shows a molded product obtained by ordinary vacuum molding using the conventional mold shown in FIG. 3, which is used for transportation between factories or for manual assembly work. FIG. 5 shows a component supply tray of the present invention in which accuracy, rigidity, strength, and durability are improved with respect to the component supply tray shown in FIG. 4, and a vacuum as the component supply tray shown in FIG. A reinforcing member 2 made of synthetic paper [trade name: Jupy Light, manufactured by Tojo Paper Manufacturing Co., Ltd.] is fastened to a molding member 1 by a compression rivet 3. Fig. 6 is a schematic view of a 10 mm thick polymethyl tacrylate plate with a square hole of 50 × 60 mm cut so that 20 stepper motors can be stored using a CO ₂ laser processing machine with an output of 500 W. It is used as a mold for vacuum forming.

FIG. 7 is a process schematic diagram when vacuum forming is performed using the mold shown in FIG. 6, (A) is an overall view of the vacuum forming machine, and the mold plate 1
The mold 12 shown in FIG. 6 is placed on the 1, and the thermoplastic resin sheet 13 is heated by the heater 14. In FIG. 7 (A), 15 is a vacuum chamber, 16 is a suction port, 17 is a suction hole formed in the template plate 11, and 18 is a clamper for supporting the thermoplastic resin sheet 13. (B) is a state diagram of vacuum forming, and (C) is a shape diagram of a vacuum formed product obtained by releasing. The component supply tray shown in FIG. 8 is obtained by using the vacuum forming member manufactured in the step shown in FIG. In FIG. 8, 19 is a vacuum forming member having a plurality of recesses 20 for restricting the components to be housed and step portions 21 in the peripheral portion, and 22 is a reinforcing member for preventing deformation of the vacuum forming member 19 and maintaining dimensional accuracy. Then, the vacuum forming member 19 and the reinforcing member 22 are fastened to each other by a complex rivet 23 at the step portion 21 to be integrated.

The following table compares the precision, cost, and durability of the conventional component supply tray and the component supply tray of the present invention in the number of manufactured sheets of 100 to 10,000. The material used for vacuum forming has no thickness.
It is 5mm polyvinyl chloride. The precision was obtained by randomly extracting 10 sheets from each of the component supply trays, measuring the dimension between two predetermined points, and evaluating the variation. Also, for durability, 10 pieces of each component supply tray are randomly extracted,
With 20 stepper motors each mounted, a drop test was repeatedly performed 10 times per tray on a concrete surface from a height of 1 m, and the state of the tray was observed and evaluated.

As is clear from this table, the component supply tray of the present invention is superior to the conventional component supply tray in the comprehensive evaluation of accuracy, cost and durability. Further, as is clear from the parts supply tray of the present invention shown in FIGS. 5 and 8, it is more conventional to use a laser-cut polymethylmethacrylate plate as a mold for vacuum forming. It can be seen that the cost is far superior to the case of using the aluminum mold.

EFFECTS OF THE INVENTION As described above, according to the present invention, a vacuum forming member having a plurality of recesses for controlling the components to be housed and a step portion in the peripheral portion and a synthetic paper having the same size as the outer shape of the step portion are used. A reinforcing member that is superposed on the back surface of the forming member to prevent deformation of the vacuum forming member and maintains the dimensional accuracy of the vacuum forming member, and the vacuum forming member and the reinforcing member are fastened and integrated at the step portion. Since it is equipped with a fastening means, it can be used not only as a parts supply tray for manual transportation and transfer of industrial parts between plants, but also when automatically assembling using an industrial robot. It is possible to provide a component supply tray excellent in accuracy, cost and durability. or,
The present invention can be used not only as a component supply tray that can store a large number of one type of components but also as a component supply tray that can store a large number of different types of components.

[Brief description of drawings]

1 is a perspective view of a stepper motor used for a floppy magnetic disk, FIG. 2 is a perspective view of a conventional aluminum component supply tray, and FIGS. 3A and 3B are conventional vacuum forming aluminum. FIG. 4 is a perspective view of a conventional vacuum-formed component supply tray, FIG. 5 is an exploded perspective view of the component supply tray of the present invention, and FIG. 6 is for molding in the present invention. Is a perspective view of a vacuum forming die obtained by laser cutting a polymethylmethacrylate plate for use as a sheet, and FIGS. 7 (A) to (C) are vacuum forming process diagrams in the present invention,
FIG. 8 is an exploded perspective view of a component supply tray using the molded product manufactured in the process of FIG. 1 ... vacuum forming member, 2 ... reinforcing member, 3 ... compression rivet, 11 ... mold mounting plate, 12 ... mold, 13 ... thermoplastic resin sheet, 14 ... heater, 15 ... vacuum chamber, 16 ...
... Suction port, 17 ... Suction hole, 18 ... Clamper, 19 ... Vacuum forming member, 20 ... Recess, 21 ... Step, 22 ... Reinforcing member, 23 ... Compression rivet.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Sadayuki Kobayashi 4-3-1, Tsunashima-higashi, Kohoku-ku, Yokohama-shi, Kanagawa Matsushita Communication Industrial Co., Ltd. (56) Bibliography Sho 48-29769

Claims (3)

[Claims] 1. A vacuum forming member having a plurality of recesses for restricting a component to be housed and a step portion in the peripheral portion, and a synthetic paper having the same size as the outer shape of the step portion, and being superposed on the back surface of the vacuum forming member. Component supply including a reinforcing member that prevents deformation of the vacuum forming member and maintains dimensional accuracy of the vacuum forming member, and a fastening unit that fastens and integrates the vacuum forming member and the reinforcing member at the step portion. tray. 2. The component supply tray according to claim 1, wherein the vacuum forming member is a polyvinyl chloride or polystyrene type thermoplastic resin film or sheet. 3. The component supply tray according to claim 1, wherein the reinforcing member is a synthetic paper obtained by impregnating and strengthening pulp with a synthetic resin.