JP2006036331A - Plastic pallet - Google Patents

Abstract

Foreign matter such as dust and water does not accumulate and molding distortion does not occur during molding.
A synthetic resin pallet is obtained by facing an upper surface mold member having an upper surface plate-like portion and a girder portion and a lower surface mold member having a lower surface plate-like portion and a girder portion, and welding the girder portion and the girder portion respectively. Form. A fork insertion hole is formed between the upper plate portion and the lower plate portion so as to pass between adjacent beam portions. A first crosspiece 15a and a third crosspiece 15c are formed on the bottom plate-like portion so as to partition the bottom portion of the fork insertion hole and provide a non-slip member on the back surface. Each crosspiece 15a, 15c forms a bottom portion 9a, a plurality of ribs 17 extending from the bottom portion 9a toward the back surface, and a cutout portion 18 formed by cutting between adjacent ribs 17,17. Furthermore, the hollow part 21 is formed in the inclined part 14b of the 1st crosspiece 15a between the back surface 6A which provided the anti-slip | skid member 20, and the bottom part 9a.
[Selection] Figure 7

Description

  The present invention relates to a synthetic resin pallet used when transporting and storing various articles and the like, and relates to a synthetic resin pallet on which a forklift, a pallet truck, and the like can be used.

Conventionally, two-way synthetic resin pallets and four-way synthetic resin pallets are used as synthetic resin pallets used for transporting and storing articles (for example, Patent Document 1 and Patent Document 2). reference).
This kind of synthetic resin pallet is composed of an upper surface plate-like portion and a lower surface plate-like portion arranged in parallel to each other and a plurality of girders connecting the upper surface plate-like portion and the lower surface plate-like portion. . The upper surface plate-like portion and the lower surface plate-like portion are connected to each other by girders arranged at both side ends and in the middle, respectively, and between the upper surface plate-like portion and the lower face plate-like portion, a forklift or pallet truck A space into which the fork is inserted is provided as a fork insertion hole.

On the back surface (lower surface) of the synthetic resin pallet, for example, when a pallet truck is inserted, four openings are provided to allow a wheel attached to the tip of the fork to fall. For this purpose, the lower surface plate-like portion is provided between the both side ends and the middle of the pallet so as to be orthogonal to the fork lift or the fork insertion direction of the pallet truck.
An inclined surface or an inclined rib is formed on the bottom portion that partitions the fork insertion hole of the lower surface plate-like portion in order to reduce resistance when the pallet truck is inserted at the front and rear positions of the end portion and the opening. This inclined portion or inclined rib makes it easier to get over the lower plate-like portion when the wheel of the pallet truck is inserted into the fork insertion hole.

By the way, a synthetic resin pallet is generally transported in a state where an article is placed thereon and stacked in multiple stages. In such a situation, the upper synthetic resin pallet placed on the lower article slides on the lower article, causing a load collapse. In addition, there has been a problem that slipping occurs with a conveying device such as a conveyor incorporated in the automatic conveying line, and the synthetic resin pallet cannot be smoothly run. In order to cope with such a problem, a synthetic resin pallet having a non-slip member attached to the back surface is also known (see Patent Document 2).
By the way, in the conventional synthetic resin pallets described in Patent Documents 1 and 2, the synthetic resin is injected into the bottom plate-like portion that forms the bottom of the fork insertion hole for inserting the fork of a forklift or a pallet truck. A plurality of reinforcing ribs are provided to prevent sink marks during molding. In addition, since a non-slip member is attached to a part of the back surface of the lower surface plate-like portion in which the reinforcing ribs are arranged, at least in this region, the horizontal plate portion connected to the reinforcing rib is changed to the lower surface plate-like portion. It was necessary to form on the back side.
JP 2001-72063 A JP 2000-16430 A

However, when such a configuration is adopted, in the region where the anti-slip member is attached in the lower surface plate-like portion, the thinned portion having a substantially U-shaped view in vertical section between the reinforcing rib and the horizontal plate portion welding the anti-slip portion. For example, sand, pebbles, rainwater and the like are U-shaped and accumulate in the meat extraction portion when placed outdoors. Even when indoors, there was a problem that fine garbage, dust, water, etc. would accumulate. Further, when the pallet was washed, water and the like were easily collected, and the water drainage was bad.
In particular, when a synthetic resin pallet is used in the food industry or the like, it is not preferable in terms of hygiene because the above-described problems occur. In order to avoid such a problem, if the portion where the anti-slip member is provided is solidly formed including the horizontal portion and the reinforcing rib, there is a problem in that sink marks occur during injection molding and molding distortion can occur.
In view of such circumstances, an object of the present invention is to provide a synthetic resin pallet in which foreign matter such as dust and water does not accumulate on the lower plate-shaped portion and does not cause molding distortion during molding. And

A synthetic resin pallet according to the present invention includes an upper surface plate-like portion and a lower surface plate-like portion that are arranged to face each other, and a plurality of girders that connect the upper surface plate-like portion and the lower surface plate-like portion. Is a synthetic resin pallet in which an insertion hole extending between adjacent girder portions is formed between the bottom portion and the bottom plate portion, and the bottom plate portion partitions the bottom of the insertion hole and on the back surface A support portion provided with an anti-slip member is formed, and the support portion includes a plurality of ribs extending from the bottom portion toward the back surface, and a hollow portion formed between the back surface and the bottom portion provided with the anti-slip member. It is characterized by that.
According to the present invention, ribs are provided from the bottom of the insertion hole toward the back surface, and the space between the ribs (thickening portion) is closed at the bottom and opened at the bottom to form a downward recess. Therefore, foreign matter such as dust and water does not accumulate in the space between the ribs, and no recess is formed on the back surface of the portion where the anti-slip member is provided, and the gas assist molding method is used between the back surface and the bottom portion. Since the hollow part formed by (1) is provided, dust and water do not accumulate in this region, and it is hygienic. In addition, the back surface provided with the anti-slip member of the support portion does not become thick with the bottom portion, and molding distortion due to sink marks does not occur during the injection molding of the synthetic resin, so that the moldability and productivity are good.

  According to the synthetic resin pallet according to the present invention, since the upward concave portion is not formed at the bottom of the insertion hole for inserting the fork of the forklift or the pallet truck on the bottom plate-like portion, the intrusion or retention of dust or water is prevented. There is no hygiene. Moreover, in the region where the anti-slip portion is provided on the back surface, a hollow portion is formed between the back surface and the bottom portion, so that molding distortion due to sink marks does not occur during molding of the synthetic resin, and the bottom, back surface, and rib after molding As a result, the moldability and productivity are good.

A pallet made of synthetic resin according to an embodiment of the present invention has a girder portion of an upper surface mold member in which an upper surface mold member having an upper surface plate-shaped portion and a girder portion is opposed to a lower surface mold member having a lower surface plate-shaped portion and a girder portion. A synthetic resin pallet in which an insertion hole is formed between the upper plate-like portion and the lower plate-like portion. The bottom plate-like portion is formed with a support portion that partitions the bottom portion of the insertion hole and is provided with a non-slip member on the back surface, and the support portion includes a plurality of ribs extending from the bottom portion toward the back surface, and a non-slip The present invention is characterized in that a hollow portion formed between a back surface provided with a member and a bottom portion is provided.
Even with such a configuration, foreign matters such as dust and water do not accumulate in the bottom of the insertion hole, and molding distortion can be suppressed due to the hollow portion provided in the support portion provided with the anti-slip member.
The insertion hole has an opening for dropping the wheel of the pallet truck into the bottom plate-like portion, and the bottom of the support portion adjacent to the opening has an inclined portion, and the inclined portion and the back surface A hollow portion may be formed between them.
Since a non-slip member is welded to the back surface of the inclined portion of the support portion, a substantially triangular cross-section is formed between the back surface and the inclined portion, but since the inside is formed in the hollow portion, the thickness is not uniform when molding the synthetic resin. No molding distortion occurs.

Hereinafter, a synthetic resin pallet according to an embodiment of the present invention will be described with reference to FIGS. 1 is a perspective view showing the top surface of the synthetic resin pallet 1, FIG. 2 is a perspective view showing the back surface of the synthetic resin pallet, FIG. 3 is a longitudinal sectional view of the pallet shown in FIG. FIG. 5 is a longitudinal sectional view of the pallet shown in FIG. 3, taken along the line CC, FIG. 6 is a longitudinal sectional view taken along the line DD, and FIG. 7 is an enlarged longitudinal sectional view of the first rail shown in FIG. FIG. 8 is a sectional view showing stepwise the fork insertion state of the pallet truck into the fork insertion hole.
1 and 2, a synthetic resin pallet 1 according to an embodiment of the present invention is formed into a square, for example, a rectangular box shape as a whole, and an upper surface plate-like portion 2 that forms an upper surface portion of the synthetic resin pallet 1. And a lower surface plate-shaped portion 3 that forms the back surface portion, and a plurality of girders 4 provided on the upper surface plate-shaped portion 2 and the lower surface plate-shaped portion 3 respectively. As shown in FIGS. 1 to 3, the upper surface plate-like portion 2 and the lower surface plate-like portion 3 are arranged substantially in parallel.

The synthetic resin pallet 1 is entirely made of, for example, an olefin resin such as polyethylene or polypropylene, and the upper surface plate member 2 and the beam portion 4 are integrally molded, and the lower surface plate member 3 and the beam. The lower surface mold member 6 formed by integrally molding the portion 4 is formed by bringing the beam portions 4 and 4 of the respective mold members 5 and 6 into contact with each other and thermally welding them. As shown in FIGS. 4 to 6, the upper surface plate-like portion 2 and the lower surface plate-like portion 3 are formed in, for example, a substantially rectangular plate shape, and the girders 4 are lined along the longitudinal direction at both ends and the center portion in the short direction. It extends in a shape.
In the upper surface mold member 5, three girders 4 are formed so as to protrude downward from the back surface of the upper surface plate-shaped portion 2 (see FIG. 5), and in the lower surface mold member 6, the upper surface of the lower surface plate-shaped portion 3 extends upward from the upper surface. Three girders 4 are formed so as to protrude. As shown in FIGS. 3 to 5, on the back surface of the upper plate-like portion 2, grid-like ribs 7 for reinforcement are formed in the region between the three spar portions 4. A plurality of large and small rectangular chamber portions 8 are formed by the ribs 7.
In addition, as shown in FIGS. 1 and 5, a plurality of (three in the figure) square holes 11 are provided along the longitudinal direction of the girder 4 between the lattice-like ribs 7 on the upper plate 2. Is provided. The square hole 11 is formed as a handle when carrying the empty synthetic resin pallet 1 or stacking and storing it.

1 to 4, the bottom plate-like portion 3 has an opening 13 for the wheels of the pallet truck to fall along the longitudinal direction of the spar 4 in the region between the linear spar 4, 4. Perforated. In the example shown in the figure, two openings 13 are provided at predetermined intervals along the longitudinal direction of the girder 4.
As shown in FIGS. 1 to 4, a forklift or a pallet truck fork is provided between each of the three rows of girders 4 and 4 of the upper and lower plate-like parts 5 and 6 in the synthetic resin pallet 1. Two rows of spaces for insertion are formed in parallel, and these two rows of spaces have tunnel-like fork insertion holes 9 and 9 (upper and lower portions partitioned by an upper plate portion 5 and a lower plate portion 6 ( Insertion hole). Two openings 13 drilled in the lower surface plate-like portion 6 communicate with the bottom of each fork insertion hole 9. Each fork insertion hole 9 is opened on each side surface on the short side of the synthetic resin pallet 1.

As shown in FIG. 1, the surface 2a of the upper surface plate-like portion 2 constitutes a loading surface for loading various kinds of luggage on the synthetic resin pallet 1, so that the luggage can be loaded stably. It is formed flat. On the surface 2a, a belt-like concave groove (not shown) is formed in a direction substantially orthogonal to the direction in which the fork insertion hole 9 extends, and a belt-like anti-slip member 10 is heat-welded on the concave groove. The anti-slip member 10 has a surface slightly protruding from the surface 2a of the upper plate-like portion 2, and is made of, for example, an olefin-based elastomer for preventing slipping of the loaded luggage. A plurality of belt-like anti-slip members 10 are formed at substantially equal intervals in the direction in which the fork insertion hole 9 extends.
In addition, as shown in FIGS. 1, 2 and 5, a plurality of through holes 2b (8 in the figure) penetrate the surface 2a from the fork insertion holes 9 of the upper plate-like portion 2 and cross the lattice ribs 7. This) is perforated, and a cylindrical anti-slip material 12 made of, for example, an olefin-based elastomer is press-fitted into each through-hole 2b. The anti-slip material 12 protrudes about 1 to 2 mm inside the upper surface plate-like portion 2, that is, in the fork insertion hole 9. Thereby, when the fork of a forklift or a pallet truck is inserted into the fork insertion hole 9, the anti-slip material 12 comes into contact with these forks, and the synthetic resin pallet 1 becomes difficult to slide.

Next, in the lower surface plate-like portion 3 shown in FIGS. 3 and 6, openings 13 and 13 are formed in two regions between the spar 4 and the spar 4 constituting the bottom 9 a of the fork insertion hole 9. A plurality of, for example, three crosspieces 15 are provided separately from each other before and after the forklift or the pallet truck in the fork insertion direction. Each crosspiece 15 is formed by a smooth flat surface portion 14a and inclined portions 14b and 14c on both sides thereof, and includes a first crosspiece 15a, a second crosspiece 15b, and a third crosspiece 15c.
The inclined portions 14b and 14c of the crosspieces 15 are formed at the entrance of the fork insertion hole 9 and at the end facing the opening 13 so that the fork when the fork of the forklift or the pallet truck is inserted into the fork insertion hole 9 Even if the wheel collides with the inclined portions 14b and 14c, the direction can be changed along the inclined portions 14b and 14c, so that the impact can be reduced. Therefore, damage to the pallet 1 made of synthetic resin can be prevented, and the wheels of the pallet truck can be smoothly lifted, so that workability for inserting and removing the forklift and pallet truck is improved.

As shown in the enlarged cross-sectional view of FIG. 7, the first crosspiece 15a and the third crosspiece 15c (support portion) are provided for a plurality of reinforcements at a predetermined interval from the bottom portion 9a toward the back surface 6a of the bottom plate-like portion 6. Ribs 17 hang down. As shown in FIG. 2, the ribs 17 are formed in a lattice shape and are arranged in the longitudinal direction of the fork insertion holes 9. Therefore, a region partitioned by the adjacent ribs 17 and 17 and the bottom portion 9a forms a concave-shaped thinned portion 18 (space) that opens downward.
Further, on the back surface 6a of the bottom plate-like portion 6, adjacent to the entrance side of the fork insertion hole 9 of each opening 13, 13, a concave groove 6b orthogonal to the longitudinal direction of the fork insertion hole 9 is formed, respectively. A belt-like anti-slip member 20 is thermally welded in the concave groove 6b (see FIG. 2). The surface of the anti-slip member 20 fixed to the concave groove 6 b protrudes slightly outward from the back surface 6 a of the lower plate member 6. Thereby, the lower surface of the synthetic resin pallet 1 can exhibit a non-slip function with respect to the upper surface 2a of the other synthetic resin pallet 1 and other members and the floor surface.
As shown in FIGS. 2 and 7, the back surface 6A of each of the bars 15a, 15b, 15c forms part of the back surface 6a of the lower plate member 6, and the anti-slip member 20 includes the first bar 15a, the third bar It is provided on the back surface 6A of the inclined portion 14b of the crosspiece 15c. Therefore, in the first crosspiece 15a and the third crosspiece 15c, the back surface 6A of the inclined portion 14b does not have the thinned portion 18 and forms a substantially horizontal plate-like portion. A concave groove 6b is formed on the back surface 6A, and the anti-slip member 20 is welded.

The first and third crosspieces 15a and 15c each have a substantially right-angled triangular cross section formed by the inclined portion 14b provided with the anti-slip member 20 and the rear surface 6A, and the inclined portion 14b and the rear surface. The region partitioned by 6A is not a solid thick portion, but the inside forms a hollow portion 21 having a substantially right-angled triangular cross section. The hollow portion 21 is formed by a gas assist molding method in which an inert gas is injected during the injection molding process of the synthetic resin pallet 1.
The other inclined portion 14c of the first and third bars 15a, 15c is located on the entrance side of the insertion port of the fork insertion hole 9, and the inclined portion 14c also has a wall thickness to avoid a thick structure. A cutout 18 is formed in the back surface.
In FIG. 7, the third crosspiece 15c is formed symmetrically with the first crosspiece 15a. Moreover, the hollow part 21 is not formed in the 3rd crosspiece 15b, but the rib 17 is formed in the whole.

Next, this gas assist molding method will be described.
That is, in the upper surface 6c of the lower surface mold member 6 shown in FIG. 6, a cross section 22 having a substantially X shape in plan view having a thickness larger than that of the rib 17 is formed in the central beam portion 4, and a gas injection hole 22a is formed in the center. Is provided. Thick ribs 23 provided on both sides of the center beam 4 from the intersection 22 extend to both sides of the fork insertion holes 9 and 9, and are provided on the first beam 15a and the third beam 15c on both sides. It is connected to the inclined portions 14b and 14b.
Therefore, when the molten resin in the mold of the lower surface mold member 6 (not shown) is injection molded, before the resin filled in the mold is still completely solidified, a gas such as air or nitrogen gas is removed from the lower surface mold. Gas is injected into the lower surface mold member 6 from the gas injection hole 22 a at the center of the upper surface of the member 6. Since the gas injected into the crossing portion 22 flows through the relatively thick portion while pushing away the resin, the resin in the central portion is pushed toward the outer peripheral edge side and enters the outer peripheral side from the center through each thick rib 23. To do.

The gas is in the solid portion between the first rib 15a located near the four corners of the bottom plate-like portion 3 from the thick rib 23 of the girder portion 4, the inclined portion 14b of the third rail 15c, and the back surface 6A. Be blown into. Therefore, the resin in each solid part is pushed in and the hollow part 21 is formed. In this way, the gas channel extends from the central gas injection hole 22a to the solid portion between the inclined portion 14b and the back surface 6A near the outer peripheral edge through the intersection portion 22 and the thick rib 23 having a relatively large thickness. Is formed. The gas also flows into the thick portion other than the solid portion between the intersecting portion 22, the thick rib 23, the inclined portion 14b, and the back surface 6A.
Thereafter, in order to prevent molding distortion such as sink due to volume shrinkage as the cooling and curing of the resin progress, a gas is continuously injected into the hollow portion 21 to increase the gas holding pressure and maintain the resin pressure. .
Therefore, if the gas assist molding method is used, it is not necessary to inject an additional resin for maintaining the resin pressure, so that the lower surface mold member 6 can be reduced in weight and a molded product without warping or deformation can be manufactured. The gas assist method is known as described in Japanese Patent No. 3443318.

  Moreover, the recessed part 25 is formed in the side surface of the synthetic resin pallets 1, and when the recessed part 25 is printed or a label is affixed, it can prevent rubbing and being damaged. Further, partition walls 26 having the same height as the height of the girder part 4 are provided in the girder part 4 at a pitch of 50 to 80 mm, and when a fork of a forklift or a pallet truck collides with the side surface of the girder part 4 But it can be prevented from being damaged.

The synthetic resin pallet 1 according to the present embodiment has the above-described configuration. Next, a method for manufacturing the synthetic resin pallet 1 will be described.
The synthetic resin pallet 1 forms the upper surface mold member 5 and the lower surface mold member 6 separately by using all or a suitable amount of polypropylene, polyethylene, and their recycled materials by an injection molding method. The synthetic resin pallet 1 is integrated by heat-welding the respective girders 4 and 4 facing each other with the front surface 5a of the molded upper surface mold member 5 and the rear surface 6a of the lower surface mold member 6 facing outward. Can be manufactured.
Specifically, first, molds for the upper surface mold member 5 and the lower surface mold member 6 are prepared, and appropriate amounts of the above-mentioned molten plastic material are filled into the molds. Immediately after filling the mold with the molten plastic material, a gas channel is formed through the intersecting portion 22 and the thick rib 23 by injecting gas into the molten plastic material at the intersecting portion 22 from the injection hole 22a. A hollow portion 21 is formed inside each inclined portion 14b of the first and third bars 15a and 15c of the lower surface plate-like portion 3. The injected gas is pressurized and held in the mold during the cooling process, so that molding distortion due to shrinkage generated in the cooling process is reduced, and the lower surface mold member 6 having a smooth surface is obtained. In addition, the gas channel and the hollow part 21 can be formed not only on the lower surface type member 6 but also on the upper surface type member 5, and the whole can be reduced in weight.

The upper surface mold member 5 and the lower surface mold member 6 which are removed from the mold after cooling and solidification are made to face each other with the inner surface sides facing each other, the girder portions 4 and 4 are brought into contact with each other, and the joint surfaces are thermally welded to be integrated. At this time, the gas injection hole 22a provided in the lower surface plate-like portion 3 is closed. Next, the welding burr protruding from the joint surface at the time of welding is scraped off with a cutter. Further, after a columnar anti-slip material 12 made of an olefin elastomer is press-fitted into the upper plate-like part 2 into the cylindrical through-hole 2b, a strip-like anti-slip member is formed in a plurality of grooves formed on the surface part. 10 is adhered while melting with heat. Similarly, a belt-like anti-slip member 20 is attached to the lower surface mold member 6.
The synthetic resin pallet 1 is manufactured by the above process.

Next, the process of lifting the synthetic resin pallet 1 with a pallet truck will be described. In FIG. 8, the pallet truck forks 30, 30 are inserted into the pair of fork insertion holes 9, 9 of the synthetic resin pallet 1 on which a load (not shown) is placed, with the wheels 31, 31 folded. The pallet truck climbs over the first rail 15a with the wheel 31 to reach the first opening 13 and further travels through the fork insertion hole 9 to get over the second rail 15b and the wheel 31 reaches the next opening 13. To reach.
When the wheel 31 is rotated at this position to stand up from the folded state, the synthetic resin pallet 1 can be lifted by the pallet truck and can be transported by the wheel 31.

  As described above, the synthetic resin pallet 1 according to the present embodiment is disposed between the plurality of reinforcing ribs 17 with respect to the first to third bars 15a to 15c provided between the openings 13 of the lower surface plate-like portion 3. Since the hollow portion 21 is provided and the hollow portion 21 is formed between the back surface 6A where the anti-slip member 20 of the first and third bars 15a and 15c is welded and the inclined portion 14b, the thin portion 18 is formed. It is hygienic because no foreign matter such as dust or water accumulates inside. Therefore, it is suitable as a pallet for storing and transporting foods. In addition, in the region where the anti-slip member 20 is welded to the back surface 6A, the hollow portion 21 is provided between the inclined portion 14b and the back surface 6A to form a substantially uniform thickness, so that molding distortion does not occur during injection molding.

As mentioned above, although the synthetic resin pallet 1 by the Example of this invention was demonstrated, this invention is not limited to an above-described Example, In the range which does not deviate from the meaning, it can change suitably. For example, in the above embodiment, the synthetic resin pallet 1 has a two-way insertion in which a fork of a forklift or a pallet truck can be inserted from two directions, but each pair of force insertion holes 9 and 9 is formed in a direction orthogonal to each other. It can also be formed as a four-way pallet that can be inserted from four directions.
In the embodiment, the upper surface plate member 2 and the girder portion 4 and the lower surface plate member 3 and the girder portion 4 are integrally molded respectively, and the upper surface mold member 5 and the lower surface mold member 6 are heat-welded to form a synthetic resin. Although the pallet 1 is formed, in the present invention, the upper surface plate portion 2, the lower surface plate portion 3 and the girder portion 4 may be integrally formed.
In the above embodiment, six belt-like anti-slip members 10 to be attached to the upper surface plate-like portion 2 and two anti-slip members 20 to be attached to the lower surface plate-like portion 3 are used. Depending on the number, the number can be attached as appropriate. In this case, when attaching the anti-slip member 20 to the lower surface plate-shaped portion 3, it is preferable to form the back surface 6 </ b> A made of a plate-shaped portion and the hollow portion 21 instead of the rib 17 on the back surface side of the crosspiece 15.
Further, when the anti-slip member 20 is provided on the back surface of the crosspiece 15, it is not necessarily provided on the back surface 6A of the inclined portion 14b. As shown in FIG. 9, the back surface 6A facing the bottom portion 9a is provided and the hollow portion 29 is provided in the thick portion. By providing the molding distortion can be suppressed.

It is the perspective view which looked at the synthetic resin pallets by the Example of this invention from the surface direction. It is the perspective view which looked at the synthetic resin pallet shown in FIG. 1 from the back surface direction. It is the AA longitudinal cross-sectional view of the synthetic resin pallets shown in FIG. It is the BB longitudinal cross-sectional view of the synthetic resin pallets shown in FIG. FIG. 4 is a horizontal sectional view taken along line CC of the synthetic resin pallet shown in FIG. 3. FIG. 4 is a horizontal sectional view taken along line D-D of the synthetic resin pallet shown in FIG. 3. FIG. 4 is an enlarged longitudinal sectional view of a first crosspiece in the bottom plate-like portion shown in FIG. 3. (A)-(e) is a longitudinal cross-sectional view which shows the process of inserting and supporting the fork of a pallet truck to the fork insertion hole of the synthetic resin pallets by an Example. It is a principal part longitudinal cross-sectional view which shows the modification of a hollow part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Synthetic resin pallet 2 Upper surface plate-shaped part 3 Lower surface plate-shaped part 4 Girder part 5 Upper surface type member 6 Lower surface type member 7, 17 Rib 9 Fork insertion hole (insertion hole)
9a Bottom part 10, 20 Anti-slip member 12 Anti-slip material 13 Opening part 14b, 14c Inclined part 15 Crosspiece (support part)
15a First crosspiece (support part)
15c 3rd crosspiece (support part)
21 Hollow part

Claims (3)

The upper surface plate-like portion and the lower surface plate-like portion arranged opposite to each other, and a plurality of girders connecting the upper surface plate-like portion and the lower surface plate-like portion. A synthetic resin pallet in which an insertion hole extending between the adjacent girder parts is formed between the shaped parts,
The bottom plate-like portion is formed with a support portion that partitions the bottom of the insertion hole and is provided with a non-slip member on the back surface,
The support portion includes a plurality of ribs extending from the bottom portion toward the back surface, and a hollow portion formed between the back surface and the bottom portion provided with the anti-slip member. Made pallet. An upper surface mold member having an upper surface plate-like portion and a girder portion is opposed to a lower surface plate member having a lower surface plate-like portion and a girder portion, and the girder portion of the upper surface mold member and the girder portion of the lower surface mold member are respectively connected. A synthetic resin pallet in which an insertion hole extending between the adjacent beam portions is formed between the upper surface plate-like portion and the lower surface plate-like portion,
The bottom plate-like portion is formed with a support portion that partitions the bottom portion of the insertion hole and has a non-slip member on the back surface,
The support portion is provided with a plurality of ribs extending from the bottom portion toward the back surface, and a synthetic resin having a hollow portion formed between the back surface provided with the anti-slip member and the bottom portion. Made pallet. The insertion hole has an opening for dropping the wheel of the pallet truck into the bottom plate-shaped portion, and the bottom of the support portion adjacent to the opening has an inclined portion, and the inclined portion and the back surface The synthetic resin pallet according to claim 1 or 2, wherein the hollow portion is formed between the two.

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