JP5554961B2 - palette - Google Patents

Description

The present invention relates to a pallet, more particularly to a pallet fitted with strip rubber to perform the slip of the product Nobutsu to the deck surface.

  A synthetic resin pallet is superior in durability to a wooden pallet, but has a high slidability, so that the load is easy to slide, and there is a risk that a load slippage may occur. For this purpose, a non-slip band rubber is welded to the deck surface of the pallet.

  Conventionally, as shown in FIG. 5, a part of the deck surface 3 of the pallet 1 made of synthetic resin is recessed to form a groove 50, and a rubber band 51 is welded to the bottom of the groove 50. The thing which made the upper end of 51 protrude from the ditch | groove 50 so that a load can contact is known (for example, refer patent document 1).

  In Patent Document 1, even if a load of a load is applied on the band rubber 51 by making the width of the band rubber 51 narrower than the groove width of the concave groove 50 as shown in FIG. As shown in c), the rubber band 51 is crushed and escapes in the groove 50, so that the load of the load is received by the deck surface 3 and the rubber band 51 is not cut. However, since it is necessary to form the concave groove 50 in the pallet 1, the problem that the mold cost for molding the pallet 1 is high, and the position of the nesting for molding the concave groove 50 is fixed in the mold, There is a problem that it is not possible to cope with a change in the formation position of the concave groove 50, and there is a problem that the number of nesting is increased, and the thickness of the relatively expensive band rubber 51 needs to be thicker than the depth of the concave groove 50. In addition, there is a problem that the band rubber 51 cannot be thinned and the cost is further increased. In addition, since many concave grooves 50 are formed on the basis of the case where a large amount of the rubber band 51 is required, if the number of the rubber bands 51 used is small, dust accumulates inside the concave groove 50 to which the rubber band 51 is not attached. There are also problems such as.

  In view of the above problems, conventionally, a rubber band 51 is also welded onto the deck surface 3 of the pallet 1 made of synthetic resin as shown in FIG.

  However, especially when a heavy object such as a funnel can is placed, if a convex rib (thread bottom) protruding from the outer periphery of the bottom of the funnel can rests on the rubber band 51, the escape area of the rubber band 51 6B, the rubber band 51 is likely to be cut by the line load P as shown in FIG. 6B, and the band rubber 51 becomes fine due to this cutting, so that it is easy to peel off from the pallet 1. In addition, the Ito can may be shifted from side to side during transportation, and the rubber band 51 may extend and become thin or cut. When the band rubber 51 is formed of a hard rubber material so as not to be cut, there is a problem that the anti-slip effect of the load is reduced.

Japanese Examined Patent Publication No. 56-41505

The present invention was made in view of the above circumstances, and an object, and prevents exfoliation, good slip effect and the pallet fitted with pallet band rubber capable of maintaining over a long period of time It is to provide.

In order to solve the above problems, the present invention provides a pallet band rubber performing cleat product Nobutsu a pallet 1 which is mounted on the deck surface 3, for the pallet band rubber is different rubber material hardness are those obtained by combining the two-color molding extruded, the lower layer that is welded to the deck surface 3, was contained relatively hard material for forming a rubber material Do Ri and pallet 1 of the same line of the material hardness strip of a hard rubber portion 5, the surface layer 4 is laminated on the upper surface of the hard rubber part 5, it is characterized by a soft rubber consisting of soft rubber material hardness than the hard rubber part 5.

With this configuration, no matter where the load is placed on the belt rubber for the pallet , the surface layer 4 of the soft rubber having a softness exposed on the surface provides a good anti-slip effect and a heavy load is applied. Even if the surface layer 4 of the soft rubber may be cut, the hard rubber portion 5 located below the hard rubber is difficult to cut, so that the entire pallet belt rubber is difficult to cut. As a result, the pallet It is possible to prevent the pallet band rubber from being peeled off from 1.

  Further, it is preferable that the side surface of the belt-like hard rubber portion 5 is covered with a soft rubber lateral layer 4 a made of a rubber material whose hardness is softer than that of the hard rubber portion 5. Further, it is preferable that the left and right side surfaces of the belt-like hard rubber portion 5 are respectively covered with the soft rubber lateral layer 4a. In this case, the exposed area of the soft rubber is expanded to improve the anti-slip effect, and the adhesion area between the hard rubber portion 5 and the soft rubber is expanded to improve the soft rubber peeling prevention effect.

The belt rubber for pallets provided in the present invention is obtained by combining rubber materials having different hardness by extrusion two-color molding, and the lower layer welded to the deck surface is made of a rubber material having a relatively hard hardness and is made of a pallet. Since it is a band-like hard rubber part containing a material of the same system as the forming material, and the surface layer laminated on the upper surface of the hard rubber part is a soft rubber made of a rubber material whose hardness is softer than the hard rubber part , peeling from good slip effect of pallet band rubbers obtained pallets, it can be prevented for a long period of time.

An example of embodiment of the band rubber for pallets of this invention is shown, (a) is a perspective view of the state which band rubber was welded to the deck surface of a pallet, (b) is a perspective view of the whole band rubber. It is a perspective view of the pallet of the state which welded the rubber band same as the above to the flat deck surface. (A) is a BB line sectional view of Drawing 1 (a), (b) is a modification of (a), and a section at the time of covering both sides of a hard rubber part with a lateral layer of soft rubber FIG. (A)-(d) is another example of a band rubber, respectively, (a) is sectional drawing at the time of forming the center area | region of the surface layer of a soft rubber by a thick part, (b) is (a). It is sectional drawing which shows the modification of (a), (c) is sectional drawing which shows the modification of (a), (d) is sectional drawing which shows the modification of (b). (A) is a perspective view of a conventional pallet with a rubber band, (b) is a cross-sectional view of a state in which the rubber band is welded in a concave groove recessed in the deck surface of the pallet, and (c) is a rubber band. It is sectional drawing explaining the state which the rubber band escaped in the concave groove when the load was applied to. Another conventional example is shown, (a) is a cross-sectional view of a state where a rubber band is welded on a flat deck surface of a pallet, and (b) is a cross-sectional view illustrating a state where the rubber band is cut by a load. is there.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  The pallet 1 made of synthetic resin is made of synthetic resin such as PP or PE, and includes a flat deck surface 3 on which a load is placed and a plurality of girders 7 as shown in FIG. A fork insertion portion 8 is formed between the beam portions 7 and 7.

  The pallet 1 includes a four-way type and a two-way type, but any type may be used in the present invention. FIG. 2 shows an example of two-way insertion. Also, an integral mold pallet that is molded entirely by synthetic resin integral molding, and a welded pallet that is formed by separately molding the upper half and the lower half and welding and integrating the upper half and the lower half FIG. 2 illustrates a welding pallet.

  Moreover, as the pallet 1, there are a double-sided use type in which both sides become the deck surface 3 and a single-sided use type in which only one side becomes the deck surface 3, but in the present invention, either one of these is used. It is not limited to this type.

  The band rubber 2 is mounted on the flat deck surface 3 of the pallet 1. As an example, a method of melting the back side of the rubber band 2 with hot air or the like and welding it to the deck surface 3, or applying an adhesive to the back side of the rubber band 2 and melting the back side of the rubber band 2 with hot air or the like Then, a conventionally known method such as a method of bonding to the deck surface 3 is used.

  In the example of FIG. 2, six rubber bands 2 are welded or bonded in parallel with each other at equal intervals. However, the number of the rubber bands 2 and the positions to be welded can be appropriately changed.

  FIG. 1 shows an example of the rubber band 2. As shown in FIG. 3A, the rubber band 2 of this example has a lower layer welded to the pallet 1 made of a band-shaped hard rubber portion 5, and a soft rubber surface layer 4 is laminated and integrated on the upper surface thereof. . The hard rubber portion 5 is formed in a substantially rectangular cross section, and the surface of the surface layer 4 of soft rubber is formed by an arc surface that is smoothly curved so that the center portion thereof protrudes upward from both side portions.

  The rubber band 2 of this example is obtained by two-color molding (extrusion molding) in which two types of rubber materials having different hardnesses are combined. The soft rubber surface layer 4 is a soft rubber material having a JIS hardness of 95 °, such as an olefin. It consists of an elastomer. The hard rubber portion 5 is made of a hard rubber material having a JIS hardness of 110 °, for example, a composite material of an olefin elastomer and PP (or PE). Of course, the material is not limited to these materials, and may be two kinds of rubber materials having different hardnesses.

  Here, when the pallet 1 is made of PP, for example, the hard rubber portion 5 is composed of a composite material of an olefin-based elastomer and PP. When the pallet 1 is made of PE, it is composed of a composite material of olefin elastomer and PE. In this way, by including a material of the same system as the material for forming the pallet 1 in the hard rubber portion 5, the welding strength of the band rubber 2 to the pallet 1 is increased.

  When the thickness of the rubber band 2 is 2.0 mm or more, if the load is a cardboard box, the surface of the rubber band 2 is likely to be attached to the surface, and if it is 1.0 mm or less, it is absorbed by sink marks or warpage of the pallet 1. The surface of the band rubber 2 becomes lower than the surface of the pallet 1, and it becomes difficult to obtain the anti-slip effect. Therefore, the thickness dimension c (FIG. 3A) is 1.0 mm or more and 2.0 mm or less, preferably about 1.5 mm or 1.6 mm, and the left-right width dimension d (FIG. 3A) is, for example, It is preferably about 10 mm.

  According to the above configuration, a good anti-slip effect can be obtained by the surface layer 4 of soft rubber having a softness exposed on the surface, regardless of where the load is placed on the pallet belt rubber 2. By the way, even if a heavy load is applied, such as when a heavy object such as a Ito can is placed, and the surface layer 4 of the soft rubber may be cut temporarily, the hardness located below it Since the hard rubber part 5 is hard to cut, the entire band rubber 2 is difficult to cut. As a result, the band rubber 2 can be prevented from peeling off from the pallet 1.

  In addition, since the hard rubber portion 5 having a high hardness in the rubber band 2 occupies a large proportion, the rigidity of the rubber band 2 as a whole is enhanced, and the linearity of the rubber band 2 can be secured and the welding strength to the pallet 1 can be increased. it can.

  Moreover, the welding strength of the band rubber 2 with respect to the pallet 1 can be further increased by containing a material of the same system as the material for forming the pallet 1 inside the hard rubber portion 5. By the way, when the hard rubber part 5 is made of an olefin-based elastomer, even if it is welded to the PP pallet 1 (or PE pallet 1), the welding strength is weak and easy to peel off. By adding a material (PP or PE) of the same type as that of the pallet 1 to the hard rubber part 5 welded to the pallet 1, the welding strength between the pallet 1 and the hard rubber part 5 can be increased. The strip rubber 2 can be reliably prevented from peeling off, and the good anti-slip effect of the soft rubber surface layer 4 can be maintained over a long period of time.

  Moreover, since the area of the surface layer 4 of the soft rubber is smaller than the area of the hard rubber portion 5, the amount of the soft rubber material that is expensive compared to the hard rubber material can be reduced, and the material cost can be reduced. Moreover, there is an advantage that the structure of the molding die can be simplified by the upper and lower two-layer structure of the soft rubber surface layer 4 and the hard rubber portion 5.

  Further, ribs 52 (see FIG. 2) extending vertically and horizontally are formed on the back surface side of the deck surface 3 of the pallet 1, and the surface of the deck surface 3 opposite to the surface on which the ribs 52 are formed, By welding the rubber band 2 in the direction orthogonal to the rib 52, the deck surface 3 is reinforced by the rib 52 in the direction orthogonal to the length direction of the belt rubber 2, and the strength of the deck surface 3 can be increased. There is also an advantage that can be done.

  FIG. 3 (b) is a modification of FIG. 3 (a), in which both side surfaces of the hard rubber portion 5 are respectively covered with a soft rubber lateral layer 4a. In this case, the exposed area of the soft rubber is enlarged. Thus, there is an advantage that the anti-slip effect is enhanced and the adhesion area of the soft rubber to the hard rubber portion 5 is enlarged, and the soft rubber peeling prevention effect is enhanced.

  4 (a) to 4 (d) are other examples of the rubber band 2, respectively. (A) shows a concave portion of the surface central portion of the hard rubber portion 5, and a central thick portion 4b of soft rubber in the concave portion. (B) is an example in which both side surfaces of the hard rubber portion 5 are respectively covered with the thin soft rubber lateral layers 4a in (a). In (a) and (b), the thickness of the central thick portion 4b of the soft rubber is set to half or more, preferably 2/3 or more of the total thickness of the band rubber 2. (C) is an example in which the hard rubber portions 5 are respectively formed on the left and right sides of the central thick portion 4b ′ of the soft rubber, and (d) is a thin-walled outer side surface of the hard rubber portion 5 in (c). It is an example coat | covered with the horizontal layer 4a of soft rubber.

  4 (a) to 4 (d), in addition to the effect of the embodiment of FIG. 1, the hard rubber portions 5 having a high hardness on both the left and right sides of the central thick portion 4b (4b ′) of the soft rubber. Since the hard rubber portion 5 is difficult to be cut by a heavy load, the central thick portion 4b (4b ') of the soft rubber is hardly cut in the same manner. When loading or unloading, the load is strongly applied, or the rubber band 2 is subjected to a vibration load from the load due to vibration during transportation, or the double-sided type or single-sided type pallet on both sides of the deck surface 3 Even when the rubber band 2 is welded, even if the surface of the rubber band 2 welded on the deck surface 3 on the back side of the pallet 1 is rubbed with the ground by dragging the pallet 1, the rubber band of this example is used. Hard in 2 The central thick part 4b of the soft rubber surrounded by the rubber part 5 is less likely to be cut or scraped, and there is an advantage that the life of the belt rubber 2 can be extended.

  In the above embodiment, the case where the central portion of the surface layer 4 of the soft rubber is curved so as to protrude upward from both side portions is exemplified, but the entire surface layer 4 of the soft rubber may be a flat surface. is there.

  The belt rubber for pallets of the present invention is not limited to the case of welding or bonding on the flat deck surface 3 of the pallet 1, but the upper end of the belt rubber 2 by welding or bonding in a concave groove formed in the deck surface 3. The present invention can be widely applied to a usage mode in which the protrusion protrudes above the concave groove.

DESCRIPTION OF SYMBOLS 1 Pallet 2 Band rubber 3 Deck surface 4 Soft rubber surface layer 4a Soft rubber horizontal layer 5 Hard rubber part

Claims (3)

The pallet band rubber performing cleat product Nobutsu a pallet attached to the deck surface, for the pallet band rubber is one obtained by combining the two-color molding extruding different rubber materials hardness, Deck lower layer is welded to the surface is a strip of hard rubber portion relatively hard Do Ri and a rubber material contain a material forming material and same type of pallet hardness, it is laminated on the upper surface of the hard rubber part A pallet characterized in that the surface layer is a soft rubber made of a rubber material whose hardness is softer than that of the hard rubber portion. 2. The pallet according to claim 1, wherein a side layer of the belt-like hard rubber portion is coated with a lateral layer of soft rubber made of a rubber material whose hardness is softer than that of the hard rubber portion. The pallet according to claim 1 or 2, wherein the lateral layers of the soft rubber are respectively coated on the left and right side surfaces of the belt-like hard rubber portion.

Images