JP2923326B2 - Article stacking method - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a method for stacking molded articles, such as a foamed polysterene fish box, which is stacked on a pallet by shifting the stacking position. It is.

(Prior Art) The conventional means of disposing a synthetic resin molding mechanism at a high position, releasing a coverless box-shaped molded product, dropping the same through a sloped runway, and manually stacking by hand, is a conventional method. It was extremely inefficient due to traffic jams on the runway and manual stacking.

The molding of the foamed resin molded article, through the in-mold bead foam molding step, move to the curing and drying step, and in this curing and drying step, for drying the moisture attached to the molded article brought from the molding step, Alter the stacking state by changing the position by 10 to 90 degrees so that the atmosphere communicates with the inside of any molded product, leave it for several hours, and return the pressure in the foam cell constituting the molded product to atmospheric pressure Curing so as not to shrink. The molded product that has undergone the curing and drying processes is transferred to the next packaging and shipping process. In this packaging and shipping process, several to several tens of molded products are restacked and packed.

Exposing the respective openings of the stacked box-shaped box-shaped molded articles is particularly useful for curing and drying the foamed molded resin articles in a short time. The dimensional stability of the product is achieved.

(Problems to be Solved by the Invention) There has been a problem how to automatically stack the molded articles by shifting the position of stacking the open box-shaped molded articles on the pallet.

(Means for Solving the Problems) According to the present invention, a pallet is placed on an abutment, and the abutment is automatically rotated to one side, and then reversed to shift the stacking position of the open box-shaped molded product. A stackable and rotatable support centered on a support shaft at the center of the lower surface is provided near the holding / transferring mechanism of the synthetic resin molded product, and the holding is performed on a pallet mounted on the support. The open-top box-shaped molded product held by the vertically movable transfer member of the transfer mechanism is released and placed,
Operation of rotating the abutment by a required angle, placing the next open box-shaped molded product thereon by the transfer member, then reversing the abutment by the angle, and further stacking the open box-shaped molded product By repeating the above, the open box-shaped molded products are stacked on the pallet, and the open box-shaped molded products are stacked by shifting the stacking position so that a part of each opening is opened. And a method of stacking molded articles.

(Operation) After stacking the open box-shaped molded products on the pallet on the first stage, rotate the abutment by a predetermined angle, stack the second stage, shift the stacking position, and then reverse the abutment to return to the original state. And the third stage is again rotated by a predetermined angle, the third stage is stacked, and the stacking position of each stage is shifted so that the respective openings of the stacked molded products are evenly and orderly exposed. Can be stacked.

(Example) An example of the method of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the molded article stacking device 1 is provided with a synthetic resin provided below a synthetic resin molding mechanism 2 having a movable mold 2 'and a fixed mold 2 "arranged at a high position. A pallet supply mechanism 4 is provided on the side, and a transfer mechanism 5 is provided in the pallet transfer direction.

As shown in FIG. 1, the molded product weight apparatus 1 includes a support 7 on which a pallet 6 can be placed, and a support section 9 having one end connected and fixed to the base of the machine base 8 of the holding and transferring mechanism 3. A shaft 11 provided at the center of the lower surface of the support 7 is attached to a bearing 10 provided at the center.
3 is rotatably mounted, and as shown in FIG. 3, a horizontal cylinder 13 having a base end mounted on a support portion 12 below the support 7.
The end of the rod 13a is attached to a supporting piece 14 hanging down from the periphery of the abutment 7. The advancing length of the rod 13a of the horizontal cylinder 13 is controlled, and the degree of extension is selected so that the rotation angle of the abutment 7 is reduced. The pallet 6 placed on the abutment 7 is rotated by a predetermined angle at a predetermined angle, and the open box-shaped molded product (a) is placed on the pallet 6;
(A), and then the support 7 is reversed to return to the original state, and the molded products (a) and (b) stacked on the pallet 6
.. Are formed so that the stacking position is shifted above the group and the next molded article (a), (a)... Can be stacked.

The holding / transferring mechanism 3 is a suction member 1 in which a coverless box-shaped molded product taken out from the synthetic resin molding mechanism 2 is mounted on a transfer member 15.
The transfer member 15 is controlled by the photoelectric tube 17 to control the stacking / falling stop position, and is rotatable up and down with the support shaft 18 as a fulcrum. When the transfer member 15 falls down, the holding by the suction members 16 and 16 is sucked. Is released, the molded article (a) is released and placed on the pallet 6.

The pallet supply mechanism 4 stacks the molded product (a) on the pallet 6 at a predetermined level, and moves the rod forward to release the pallet 6 from the support 7 onto the transfer mechanism 5 and then timely. In order to supply another pallet to the support 7, the pallet 7 is formed.

The transfer mechanism 5 is provided with an abutment 7 on which the molded products (a) are stacked.
The upper pallet 6 is moved to the pushing cylinder 19 provided on the machine base 8.
A roller conveyor 21 or a conveyor belt to be transferred by pushing of the pressing member 20 provided on the rod is provided.

 This molded article stacking device operates as follows.

The advance length of the rod 13a of the horizontal cylinder 13 is set to a predetermined length in advance, and after the first-stage stacked-open box-shaped molded product (a) is stacked on the pallet 6 placed on the support 7, the horizontal cylinder 13 is timed. By operating the rod 13a, the support 7 is rotated by a predetermined angle, for example, 30 degrees.

The transfer member 15 which has risen again, adsorbs the next molded product from the mold, and has receded and descended is stopped by detecting the upper end of the first-stage molded product (a) by the photoelectric tube 17. When the transfer member 15 is again turned around the support shaft 18 and the molded product (a) to be sucked and held is placed on the first stacked molded product with the stacking position shifted, the horizontal cylinder 13 is operated. Then, the rod 13a is retracted and contracted, and the support 7 is reversed and returned to the state of the first stacking, and then these operations are sequentially repeated, and the transfer member 15 places the support 7 on the second stacked product. The stacking position is shifted to form a third-stage molded product. The horizontal cylinder 13 is operated to rotate the support 7 by a predetermined angle, and then the fourth stage is stacked to form a fourth-stage molded product group.

In this case, the third stacking position is the same as the mounting state of the first stacking group, and the fourth stacking position is the same as the mounting state of the second stacking product. As shown in the figure, the corners (c) of the openings (b) of the first, second, and third-stage open box-shaped molded products are always exposed, and the openings of the fourth-stage molded products are always exposed. Has an upward opening shape. When the moldings (a) are piled up on the pallet for a predetermined number of times, the pallet is driven onto the transfer mechanism 5 by the operation of the pushing cylinder 19 as described above.

(Effects of the Invention) The present invention automatically rotates a pallet placed on an abutment by a predetermined angle, or returns the original shape to the original shape, and automatically shifts the stacking position of the open box-shaped molded product to be stacked on the pallet. Since the products can be stacked in a stack, the curing and drying of the molded product can be performed uniformly, and the process is extremely efficient and greatly saves labor.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a molded article stacking apparatus used in the present invention,
FIG. 2 is a plan view as seen from the line II-II in FIG. 1, and FIG.
FIG. 4 is a plan view seen from the line of FIG. III-III, FIG. 4 is an explanatory view of a stacked state by the forming and stacking method of the present invention, and FIG. 5 is a plan view of the same. 3... Holding and transferring mechanism, 6... Pallet, 7.
…… Spindle, 15… Transfer member, (a)… Open box-shaped molded product.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa 48-69816 (JP, U) Japanese Utility Model Showa 56-132230 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B65G 57/04 B29C 45/40

Claims (1)

(57) [Claims] An abutment rotatable about a support shaft at a central portion of a lower surface is provided near a holding / transferring mechanism for a synthetic resin molded product, and the supporting / transferring mechanism is mounted on a pallet placed on the supporting base. The open box-shaped molded product held by the adjustable transfer member is released and placed, the abutment is rotated by a required angle, and the next open box-shaped molded product is placed thereon by the transfer member, Then, the abutment is reversed by the angle, and the operation of stacking the open box-shaped molded articles is repeated, thereby stacking the open box-shaped molded articles on the pallet, and a part of each opening is in an open state. A stacking method of molded articles, wherein the stacking position is shifted so as to obtain a stack of molded articles in an open box shape.