JP2787397B2 - Integrally molded double-sided synthetic resin pallet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet integrally formed of a synthetic resin, which has a two-way or four-way fork insertion port for carrying and loading and unloading by a forklift. The present invention relates to a double-sided pallet provided with a non-slip material so as not to slip against the pallet.

[0002]

2. Description of the Related Art Since a synthetic resin pallet is liable to slide on a metal fork, various devices have been conventionally devised. For example, a type in which hard rubber having a large coefficient of friction is forcibly driven into a hole provided in a pallet as known in Japanese Patent Publication No. 63-44625 is known. However, this known anti-slip material mounting structure relates to a pallet in which a pallet is formed separately from an upper half and a lower half, and is integrated by heat welding after forming.
It is difficult to mold the above structure in the case of the integral molding rather than the type of integrally molding from the beginning.

Further, as known from Japanese Utility Model Laid-Open No. 3-126833, a fork insertion opening is provided in the surface deck to provide a horizontal protruding rib for engaging and fixing a non-slip material in an integrally formed pallet. There is known a type in which an undercut portion of a protruding rib is formed by a slide core fitted in a slide mold to be formed so as to be movable in a vertical direction. However, this known method of attaching a non-slip material has a high mold cost due to a complicated mold structure, and requires a long time to move the slide core at the time of release, so that it is compared with a slide mold without a slide core. Therefore, there is a problem that the productivity is lowered, the trouble on the mold is easily caused, and the cost of the mold maintenance becomes high.

[0004]

DISCLOSURE OF THE INVENTION In view of the above, the present invention has an upper surface and a lower surface formed by a bar-shaped deck, and is integrally formed of a synthetic resin of a two-way or four-way insert type. It is an object of the present invention to provide a pallet having a structure for fixing a non-slip material with a simple and inexpensive mold structure.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a cross-shaped surface deck and a cross-shaped lower deck are connected by a plurality of tubular girders.
In an integrally molded double-sided synthetic resin pallet in which a fork insertion opening is formed between cylindrical girders, a cylindrical portion supported by a bar is formed on either or both of a surface deck and a lower surface deck, and the inside of the cylindrical portion is formed. A ring-shaped portion protruding inward is formed at a position one step higher from the back side of the deck, and a cutout portion is formed on the back side of the deck from the end of the deck to a semicircular portion at the lower end of the cylindrical portion, and An integrally molded double-sided synthetic resin pallet characterized by being provided with an anti-slip material in which a head is inscribed in the cylindrical portion and a concave groove provided near the lower end is fitted to the annular portion in the cylindrical portion. It is.

[0006]

FIG. 1 is a sectional view of a surface deck 1 at a portion where a fork insertion port intersects in a pallet according to an embodiment of the present invention. It has a lattice shape, and the cylindrical portion 4 is supported by the bars 2 and 3. An annular part 5 protruding inward at a position one step higher from the back side of the front deck 1 in the cylindrical part 4
Are formed. As shown in FIG. 2, a notch 6 is provided on the back side of the front deck 1 so as to reach a semicircular portion at the lower end of the cylindrical portion 4 from the end of the front deck 1.

The cylindrical portion 4 of the surface deck 1 is provided with a hard rubber non-slip material 9 in which a head 7 is inscribed in the cylindrical portion 4 and a concave groove 8 provided in the vicinity of a lower end thereof is fitted into the annular portion 5. ing. The anti-slip member 9 is driven from above in FIG. 1, and the groove 8 is fitted into the ring portion 5 of the cylindrical portion 4 and fixed.

The molding of the pallet according to the present invention can be performed by using a fixed mold 11 and a movable mold 10 which face each other in the vertical direction, and a slide mold 12 for forming a fork insertion opening. FIG. 3 is a view showing a part of the slide mold 12. The slide mold 12 has a draft angle of about 0.5 ° to 1 ° in consideration of the releasability of the pallet. Further, in order to form the ring-shaped portion 5, the straight portion 1 in which the slide mold 12 is not partially inclined from the lower portion of the ring-shaped portion 5 in the direction in which the slide mold 12 is removed.
A notch 6 is formed by the straight portion 13 on the back side of the front deck 1 so as to reach a semicircular portion at the lower end of the cylindrical portion 4 from the end of the front deck 1.

In the above description, the embodiment in which the non-slip material 9 is provided on the front deck 1 has been described. However, the non-slip material 9 can be similarly provided on the back deck.

[0010]

According to the present invention, a complex mold structure such as having a slide core fitted in a slide mold in an injection-molded synthetic resin pallet that can be used on both sides and can be inserted in two or four directions. Without the need for, the non-slip material can be fixed simply by driving the anti-slip material into the deck of the fork insertion opening from the upper surface to a predetermined position,
Moreover, the anti-slip material does not fall off during use of the pallet. Further, by appropriately selecting the size of the anti-slip material, both anti-slip effects of the anti-slip of the load on the deck surface and anti-slip of the fork can be achieved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an example of a synthetic resin pallet according to the present invention.

FIG. 2 is a perspective view of the front deck of the synthetic resin pallet according to the present invention as viewed from the back side.

FIG. 3 is a sectional view showing an example of a mold for molding a synthetic resin pallet according to the present invention. DESCRIPTION OF SYMBOLS 1 Surface deck 2 Crossbar 3 Crossbar 4 Cylindrical part 5 Ring part 6 Notch part 7 Head 8 Depression groove 9 Non-slip material

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B65D 19/24 B65D 19/32

Claims (1)

(57) [Claims] 1. A single-piece double-sided synthetic resin pallet in which a bar-shaped surface deck and a bar-shaped lower deck are connected by a plurality of tubular girders, and a fork insertion opening is formed between the tubular girders. A cylindrical portion supported by the crosspiece is formed on one or both of the lower decks, and an inwardly projecting annular portion is formed at a position one step higher from the back surface side of the deck in the cylindrical portion, and on the back surface side of the deck. A notch extending from the end of the deck to the semicircular portion at the lower end of the cylindrical portion is formed, and the head in the cylindrical portion is inscribed in the cylindrical portion and the concave groove provided near the lower end is fitted to the annular portion. An integrally molded double-sided synthetic resin pallet characterized by being provided with a non-slip material.