JP2000335545A - Holding tray and working device used for fixing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure excellent in positioning accuracy of a tray while fitting and separation of the tray is easy and to employ uniform design standards even for various kinds of machines on a production line and for materials in various forms. SOLUTION: The tray 15 comprises a component housing 11, a peripheral wall 12, a ceiling plate 13 integrating them, and a dent 14 provided on a part of the ceiling plate. It is characterized by the dent 14 provided on the ceiling plate 13. In a first embodiment, the dent is placed at a corner of the tray 15 separate from an array of the housings 11. A form and a depth of the dent is such that a cross section is trapezoidal and the depth is shallower than the outer peripheral wall.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tray for storing components and transporting the components to each process, and a working device for fixing the position of the tray in each process. Above all,
Provided are a tray and a working device capable of fixing the tray and easily detaching the fixing.

[0002]

2. Description of the Related Art It is necessary to fix a tray as a transport unit when parts used in each process are handled in a certain quantity as one transport unit and the components are picked up in each process and used for work. In addition, upon fixing, fitting and disengaging must be easy and positioning must be performed accurately.

[0003] A conventional fixing method will be described with reference to FIG. FIG.
(A) is a schematic plan view of the tray and the working device, FIG.
(B) is a schematic cross-sectional view along the line BB. The conventional fixing method includes a plurality of component housings 1 vacuum-formed,
The tray 4 composed of the outer peripheral wall 2 and the ceiling plate 3 that integrates the outer peripheral wall 2 is fitted to the fixing portion 5 of the working device 6 used for fixing.

[0004] Trays are made of vacuum molded thin material. For example, if the tray contains an LCD panel, it is 0.
A material having a thickness of 4 mm is drawn and molded under vacuum to form a material having a thickness of about 0.2 mm. This thickness provides a merit that it is easy to fit into the fixed portion 5 and, conversely, a merit that it is easily detached.

[0005]

Due to the use of the outer periphery of the tray as a reference for positioning and the fact that the tray is formed of a thin material, sufficient positional accuracy when fixed cannot be obtained. This is because this tray is a vacuum molded product, so deformation which is a disadvantage of molded products occurs,
The positional accuracy could not be obtained as desired due to distortion or deformation occurring during repeated use.

Further, as a matter of course, the fact that the fitting and the detachment are easy means that the tray is detached from the working device even by some external force or inclination.
With the conventional fixing method, it could not be put into an automatic machine.

SUMMARY OF THE INVENTION The present invention proposes a structure in which the tray can be easily fitted and detached, and the positioning accuracy of the tray is good. Another object of the present invention is to propose a tray and a working device used for fixing the tray, which can be considered based on a unified design standard regardless of various types of materials in a mass production line or materials having various shapes.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a tray comprising an outer peripheral wall, a plurality of component storage portions having an intermediate bottom shallower than the outer peripheral wall, and a ceiling plate integrating these components. It is another object of the present invention to provide a molded tray, wherein a plurality of recesses are provided in a ceiling plate near a peripheral corner and have a trapezoidal cross section deeper than the component storage portion.

Another object of the present invention is to provide a working device used for fixing a molding tray, wherein a cylindrical fixing portion having a rectangular cross section is provided at a position corresponding to the plurality of recesses.

[0010] Further, the recess provided in the ceiling plate,
An object of the present invention is to provide a molding tray and a working device used for fixing the molding tray, which are provided asymmetrically with respect to a fixing portion provided at a position corresponding thereto.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to FIGS. FIG. 1A is a schematic plan view of a molding tray according to the present invention, and FIG. 1B is a schematic sectional view showing an AA cross section of FIG. 1A. FIG. 2 is a view showing a state immediately before the molding tray is set on a working device used for fixing and is pushed in.

According to the present invention, as shown in FIG.
Tray 1 comprising an outer peripheral wall 12, a ceiling plate 13 integrating them, and a recess 14 provided in a part of the ceiling plate.
5 Each component requirement will be described. This tray 15
Are integrally formed by vacuum forming a thermoplastic synthetic resin sheet. Of course, if necessary, an antistatic sheet may be formed by vacuum molding instead of the thermoplastic synthetic resin sheet.

Needless to say, the component storage portion 11 has a shape most suitable for the shape of components required for the process, but usually has an insole and is provided at a position shallower than the outer peripheral wall 12. The ceiling plate 13 is used for the purpose of integrating the whole. The production line tries to make the synthetic resin sheet as thin as possible in order to reduce such costs, but it is weak and easy to bend. For this reason, the ceiling plate is provided with linear irregularities to increase the bending strength.

A feature of the present invention is a depression 14 provided in the ceiling 13. The position of the depression may be anywhere on the ceiling plate 13. However, it can be said that the design is better as the area occupied by the occupied area is closer to zero because it is a recess for positioning, although it may be anywhere. In the first embodiment, the tray 15 is disposed at a corner of the tray 15 remote from the arrangement of the component storage units 11. The number of the depressions 14 was four. The shape and depth of the depression are trapezoidal in cross-sectional shape, and the depth is designed to be shallower than the outer peripheral wall.

The tray constituting the present invention is used as shown in FIG. The working device 21 includes a base 22 and a fixing unit 23. The base 22 is installed corresponding to the position of the depression 14 of the tray 15 and has a cylindrical shape. The height was designed to be equal to or slightly higher than the vertical height of the outer peripheral wall 12.

Although the outer shape of the fixing portion 23 of the present invention is not necessarily limited to a cylindrical shape, the shape of the hole 24 formed in the fixing portion 23 is important. The depression 1 provided in the tray as described above
Reference numeral 4 denotes a trapezoidal cross section, and the fixed portion 24 to be fitted is constituted by a hole 24 having a rectangular cross section, that is, a cylindrical shape. The hole 24 provided in the fixing portion 23 is naturally designed to be equal to or deeper than the depth of the depression 14 of the tray.

The recess 14 of the tray 15 is aligned with the hole 24 of the fixing portion 23 of the working device 21 and is lightly pushed downward by a finger to be fitted. In the structure of the present invention, the resistance at the time of fitting is determined by the trapezoidal cross section of the recess 14 provided in the tray. That is, the resistance at the time of fitting and disengaging is determined by this.

The description will be made with reference to a cylindrical hole 24 provided in the fixing portion 23. The upper end of the depression 14 having a trapezoidal cross section is formed slightly larger than the diameter of the hole 24. Conversely, the lower end is molded slightly smaller than the diameter of the hole. Although the resistance at the time of mating and unmating is subjectivity, according to the experimental results, the angle of the taper is 3 to 7 with the vertical direction being zero.
The degree was appropriate.

Another embodiment of the present invention will be described with reference to FIG. FIG. 3 shows a schematic plan view of the tray.
All figure numbers correspond to FIG. In this embodiment,
A tray 15 is composed of the component storage portion 11, the outer peripheral wall 12, the ceiling plate 13, and the depression 14. Here, four recesses 14 are provided in the peripheral portion of the ceiling plate 13, but the arrangement is characteristic. That is, an object of the present invention is to prevent the tray from being erroneously rotated and set by 180 degrees when the tray is placed on and fixed to the fixing portion of the working device. Specifically, the trays are arranged asymmetrically with respect to the center of the tray (the intersection of diagonal lines in the case of a rectangle). This makes it impossible to set by rotating 180 degrees, nor to set by rotating by 90 degrees or 270 degrees, thereby avoiding confusion of the process.

In the first and second embodiments, the depressions provided in the ceiling plate of the tray are shown by being provided in the corners outside the arrangement of the component storage sections, but such a positional relationship is not always the best. , May be provided in a group of the component storage units. Generally, the periphery of the ceiling plate is a space without a component storage part, so corners are appropriate to increase the area efficiency.However, as the arrangement density of the component storage parts increases, the depression becomes a depression. Because it is occupied, the efficiency does not change wherever it is installed.

If the shape of the storage part is a simple shape from the shape of the part and is sufficiently deep, the part storage part may have a role of a depression.

[0022]

According to the present invention, since the cylindrical hole provided in the fixed portion of the working device and the recess having a slight taper provided in the tray are positioned by fitting, only a slight press is required. It is fixed, and its resistance can be freely designed by changing the taper.

Since the fixing of the present invention is not performed on a soft long side such as the outer peripheral wall, perfect accuracy can be maintained. In addition, since it is no longer possible to apply an external force to one place or to lose the fixation when tilted as in the related art, it is possible to set an automatic machine.

According to the present invention, even if the recess provided in the ceiling plate of the tray is thin, it is mechanically strongly deformed, and there is no possibility of displacement due to deformation. In addition, since the outer peripheral wall is not used for positioning, even if the outer wall is broken, the positioning accuracy can be sufficiently maintained.

In a new design of a mass production line, for example, it is possible to design a tray and a working device capable of standardizing the size even though the number of parts to be stored is different by classifying the parts into several sizes. It can be said that standardization is easy.

Further, since the setting direction of the work device is determined by making the position of the depression asymmetric, it is possible to eliminate possible sources of errors in the work.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining the present invention.

FIG. 2 is a diagram for explaining the present invention.

FIG. 3 is a diagram for explaining the present invention.

FIG. 4 is a diagram for explaining a conventional example.

Claims (3)

[Claims] 1. A tray comprising an outer peripheral wall, a plurality of component storage portions having an inner bottom shallower than the outer peripheral wall, and a ceiling plate integrating these components. A molding tray provided with a plurality of depressions having a trapezoidal cross section deeper than the component storage portion. 2. The working device according to claim 1, wherein a cylindrical fixing portion having a rectangular cross section is provided at a position corresponding to the plurality of recesses. 3. The molding tray according to claim 1, wherein the recess provided on the ceiling plate and the fixing portion provided at a position corresponding to the recess are provided asymmetrically with respect to each other. The working device used for its fixation as described.