JPH10109757A - Separating device for laminated tray - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently and automatically separate trays one by one from a tray laminated body with a simple structure. SOLUTION: A separating device comprises a vacuum box 10 whose projected suction path 11 slightly smaller than recessed parts of a tray are arranged in a front side, and connected to an evacuation device, and a driving means to elevate/lower and transversely travel the vacuum box, the vacuum box is lowered, the suction parts are inserted in recessed parts V of a tray T of the highest part of a tray laminated body TS, wall surfaces of the recessed parts of the tray are sucked to the suction parts through evacuation to reduce the volume of the recessed parts and form a gap from the recessed part of the second tray. In this condition, the vacuum box is elevated to separate the tray on the highest part of the tray laminated body from the second tray.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated tray separating apparatus for separating vacuum forming trays one by one from a tray laminate.

[0002]

2. Description of the Related Art In order to store and transport relatively small parts such as parts of industrial products, or to supply parts to an assembly line, there are a plurality of recesses in which parts to be stored are stored. Molded trays are often used. As the tray, a vacuum forming tray in which a plurality of recesses are formed by vacuum forming a thin synthetic resin sheet is often used.

[0003] Such trays are light in weight but relatively bulky due to the formation of recesses. Therefore, the wall surface of the recess of the tray is slightly inclined so that the area of the opening is larger than the area of the inner bottom, so that the recess can be fitted into the recess of another tray, and the recess and the recess are filled. It is shipped from a tray maker as a tray stack.

[0004]

For this reason, when using such a vacuum-formed tray, it is necessary to separate the trays one by one from the stack of trays. It was done by work. However, at this time, since the recesses of the trays are filled, the contact resistance is large, so that it takes time and effort to separate the trays and the work efficiency is extremely low.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus for separating laminated trays having a simple structure and capable of automatically separating trays one by one from a tray laminate efficiently.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, a thin synthetic resin vacuum forming tray in which a plurality of recesses for accommodating objects to be stored are vacuum formed is laminated. A tray for separating trays one by one from a stacked tray stack, wherein a suction unit having a convex shape slightly smaller than the recess of the tray is arranged on the front side and connected to a vacuum device. And a driving means for moving the vacuum box up and down and running laterally, and lowering the vacuum box so that the suction portion enters the recess of the uppermost tray of the tray laminate, and the pressure in the tray recess is reduced by reducing the pressure. The wall is attracted to the suction part to reduce the recess to form a gap with the recess of the second tray. In this state, the vacuum box is raised and the top two trays of the tray stack are stacked. Separate from eye tray So as to.

Further, when the vacuum box separates the uppermost tray of the tray stack from the second tray and rises as in the second aspect of the present invention, the two trays for holding the second tray are held. By providing the pawls for prevention, the trays can be separated from the tray laminate one by one more reliably.

[0008]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 shows a vacuum forming tray T to be handled by the laminated tray separating apparatus of the present invention.
Is shown. The tray T is formed of a thin synthetic resin sheet, for example, a vinyl chloride sheet having a thickness of 0.3 mm, and has a plurality of recesses V in which articles to be stored such as parts of industrial products are vacuum-formed. Therefore, the tray T is lightweight and highly flexible, easily deforms when a force is applied, and recovers when the force is released.

The wall of the recess V of the tray T is slightly inclined, and the area of the opening of the recess V is larger than the area of the bottom. Accordingly, it is possible to fit the recess V into the recess V of another tray, and as shown in FIG.
Are shipped from a tray maker as a recess V and a tray laminate TS filled with the recess V. Therefore, when using the tray T, it is necessary to separate the trays T one by one from the tray laminate TS.

[0010] The vacuum box 10 is a flat hollow box body, and as shown in FIG.
Are arranged, and a suction hole 12 is formed in the suction section 11. The number of the suction portions 11 is the same as the number of the recesses V, and the size of the suction portion 11 is slightly smaller than that of the recess V. Further, a rubber plate 13 for sealing is attached to a peripheral edge of the front surface. The vacuum box 10 is connected to a pressure reducing device (not shown) by a vacuum hose 14.

The vacuum box 10 moves up and down and runs laterally by a driving means (not shown). As shown in FIG. 5, the tray laminate TS is set at a predetermined position. Then, in the process A, the vacuum box 10 is lowered, the suction unit 11 enters the recess V of the uppermost tray T of the tray stack TS, and the rubber plate 13 comes into close contact with the peripheral edge of the tray T. Next, in the process B, when the depressurizing device is operated, the uppermost tray T is adsorbed to the vacuum box 10, but since the size of the suction unit 11 is slightly smaller than the recess V, as shown in FIG. , a gap shrinking recess V of the tray T ₁ is between the second sheet of the tray T ₂ of the recess. That is, the contact resistance of the tray T ₁ uppermost tray laminate TS and the second sheet of the tray T ₂ is almost zero.

When the vacuum box 10 is raised in step C in FIG. 5, the tray T is separated from the tray stack TS. At this time, the two-sheet preventing claws 15 press the second tray. Then, separation can be reliably performed. Subsequently, the vacuum box 10 traverses to the release position in the stroke D and descends in the stroke E. When the operation of the pressure reducing device is stopped in the process F, the tray T is released from the vacuum box 10. The vacuum box 10 subsequently rises and traverses in strokes G and H to return to its original position,
The vacuum box 10 repeats this cycle to separate the trays T one by one from the tray stack TS.

[0013]

As described above, the separating device for a laminated tray according to the present invention has a convex suction portion which is slightly smaller than the recessed portion of the tray and is provided with a vacuum box connected to a pressure reducing device. The vacuum box is constituted by driving means for raising and lowering and laterally moving the vacuum box. The vacuum box is lowered so that the suction unit is inserted into the concave portion of the uppermost tray of the tray laminated body, and the pressure is reduced to reduce the wall surface of the concave portion of the tray. Is attracted to the suction part to reduce the recess to form a gap with the recess of the second tray, and in this state, raise the vacuum box to remove the second tray at the top of the tray stack. Since the trays are separated from the tray, the structure can be simplified, and a tray separation apparatus can be efficiently separated from the tray stack one by one automatically.

[Brief description of the drawings]

FIG. 1 is a perspective view of a tray.

FIG. 2 is an explanatory diagram of a tray laminate.

FIG. 3 is a perspective view of a vacuum box.

FIG. 4 is an explanatory diagram of a suction state of a tray.

FIG. 5 is an explanatory diagram of a separation process.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Vacuum box 11 Suction part 12 Suction hole 13 Rubber plate 14 Vacuum hose 15 Claw for preventing 2 pieces T tray V Tray recess TS tray laminate

Claims (2)

[Claims] 1. A laminated tray separating apparatus for separating trays one by one from a tray laminate in which thin synthetic resin trays in which a plurality of recesses for storing objects are vacuum-formed are stacked. A convex suction unit somewhat smaller than the recess of the tray is arranged on the front surface, and comprises a vacuum box connected to a decompression device, and driving means for moving the vacuum box up and down and running laterally; The suction part descends and enters the concave part of the uppermost tray of the tray laminate, and the wall of the concave part of the tray is attracted to the suction part by the decompression, and the concave part is reduced to the concave part of the second tray. A separation device is provided for separating the uppermost tray of the tray stack from the second tray by raising the vacuum box in this state. 2. The apparatus according to claim 2, wherein said vacuum box is provided with a claw for preventing the second tray from being taken when said vacuum box is lifted by separating the uppermost tray from said second tray. The separation device for a laminated tray according to claim 1, wherein: