KR100642937B1 - Steel pallet - Google Patents

Abstract

' 형상인 직육면체형상의 철재파렛트 부재를 여러개 적층하여 구성되는 것을 특징으로 하는 철재파렛트로서, 상기의 철재파렛트 부재 3개를 상판으로 하고, 이를 뒤집은 것을 하판으로 하고, 상기 하판의 하부에는 다리부위가 결합되며, 상기 다리부위는 드로잉 후 금형펀치와 다이를 사용하여 압축성형의 공정을 순차적으로 행하여 성형되는 것을 특징으로 하는 철재파렛트이다.The present invention is a horizontal cross section and vertical cross section '

A steel pallet comprising a plurality of rectangular parallelepiped steel pallet members, wherein the three steel pallet members are used as the upper plate, and the inverted one is the lower plate, and the lower portion of the lower plate Combined, the leg portion is a steel pallet, characterized in that the molding is performed by sequentially performing a compression molding process using a mold punch and die after drawing.

Top plate, Leg portion, Low carbon steel, Bonding ring, Compression molding, Drawing

Description

Iron Pallet {omitted}

1 is a perspective view of an iron pallet of the present invention.

Figure 2 is a detailed view of the steel pallet member of the present invention

3 is a cross-sectional view taken along the line A-A 'of FIG.

Figure 4 is a partial cross-sectional view of the leg portion of the present invention

5 is a detailed view of another embodiment of a steel pallet member of the present invention

FIG. 6 is a cross-sectional view taken along line BB ′ of FIG. 5.

Figure 7 is an exploded perspective view of the steel pallet and leg support of the present invention

8 is a detailed view of a conventional steel pallet

<Explanation of symbols for the main parts of the drawings>

10: top plate 20: bottom plate

30: steel pallet member 40: leg portion

50: engaging hole 60: lower support

70: through hole

The present invention relates to a pallet which is essentially used to easily or quickly and accurately handle transportation and storage of goods or products in an industrial site or a distribution industry. In order to achieve the intended purpose, the weight of the pallet is reduced to reduce logistics costs, and the strength is reduced. There is a need for improvement in the ability to mass-automate with improvements in assembly costs and parts reduction while improving the object of the present invention.

Therefore, in order to minimize the weight while utilizing the advantages of using a round iron plate, that is, the upper part of the pallet and the leg part are simply manufactured by molding by forming a mold while minimizing the weight and minimizing the durability while increasing the cross-sectional secondary moment and cross-sectional coefficient. By combining, the main advantage is to produce a simple and durable steel pallet utilizing the strengths of the steel.

Until now, pallets for transporting and storing goods have generally consisted of a piece of wood having a certain thickness or width in the form of a lattice, and fastening fixtures such as nails at the intersection thereof. This is a short problem, especially when used as a stockpile of outdoor goods such as bricks or stones, the pallet is exposed to moisture or moisture, and in this case, the moisture penetrates the wood and causes deformation of the wood. Corrosion and mildew can cause bad odors and damage to the loads stored on top. Also, raw materials are mostly dependent on imports, so foreign currency waste, resource waste and environmental pollution have been pointed out. Synthetic resin (plastic) material to reinforce corrosion and weak strength The produced pallet is utilized.

However, pallets made of synthetic resins have mass production and strength reinforcement, which extends the service life compared to conventional wood pallets, but has a drawback of being very heavy as an integral injection molding method. Therefore, it lowers the loading efficiency and causes the logistics cost to increase greatly, and causes environmental problems such as not being recycled.

Recently, in order to compensate for this problem, conventional steel pallets have been produced, but the number of parts has increased, making it difficult to increase production costs and automate mass production. The assembled piece bolts are easily relaxed by vibrating loads when used for a long time. Inconvenience in use and short-lived shortcomings have emerged, and since the entire pallet has been integrally manufactured up to the leg part, however, various difficulties such as excessive input of equipment costs have appeared, which is why weight, cost, In use, there were many problems.

As an improved invention, the present inventor has applied for a number of patents, and in particular, a reinforcing hole is formed in the upper plate, and a leg member is coupled to the lower plate.

The main points are as follows. Steel pallet is composed of a top plate and a leg portion, a plurality of reinforcement rib holes are formed in a grid form on the top plate, the reinforcement rib hole is formed in the periphery of the hole extending downward, the outer periphery of the reinforcement rib hole from the center of the hole The reinforcement ribs are formed at a predetermined height in close proximity to each other, and the reinforcement ribs are formed between the reinforcement rib holes, that is, on the center of each of the four reinforcement rib holes, respectively. Auxiliary tendons are formed at the height and are raised to a small height. An arbitrary embossing for the purpose of preventing slippage and inserting a manufacturer's mark, an internet address, etc. is formed at an arbitrary position of the upper plate, and a leg is formed at a portion extending below the reinforcing tender hole In the steel pallet to which the site is joined, the leg is generally funnel-shaped with an empty inside It is the same cross-sectional shape as the portion extending to the lower portion of the reinforcing force hole, the upper plate of the iron, the lower portion of the upper plate is coupled to the leg portion, the upper plate is perforated, the leg portion penetrates the hole and the upper plate and Combined, the leg portion is generally funnel-shaped, the upper outer circumference is equipped with a coupling ring formed in a plurality of radially radially, after the leg portion and the coupling ring passes through the hole of the upper plate, by spreading the tangy piece radially , The leg portion relates to a leg portion connecting device of the iron pallet, characterized in that the top plate is fixed stably.

However, the above invention had to use a rigid steel sheet, which resulted in an increase in the cost of materials and processes.

' 형상인 직육면체형상의 철재파렛트 부재를 여러개 적층하여 파렛트의 형태를 유지하면서 구조의 견고함과 동시에 경량화를 이루고, 사용이 용이함과 성형성이 뛰어난 철재파렛트를 제공하는 데 목적이 있다.Therefore, the present invention in order to solve the above problems the horizontal cross section and the vertical cross section '

It is an object of the present invention to provide a steel pallet having excellent rigidity and weight while maintaining the shape of the pallet by stacking a plurality of rectangular parallelepiped steel pallet members.

' 형상인 직육면체형상의 철재파렛트 부재를 여러개 적층하여 구성한 철재파렛트에 관한 것이다.The present invention is a cross-sectional and vertical cross-section is a concave-convex shape in which the protrusions and recesses alternately repeated

It relates to a steel pallet constituted by stacking a plurality of rectangular parallelepiped steel pallet members.

Conventional steel pallets had to use a rigid steel plate due to the characteristics of the pallet to load the goods, resulting in an increase in the cost of materials and processes. Therefore, there is a need for a material which is more excellent in formability and can maintain strength sufficient to be suitable for pallets.

The present invention has been conceived of a steel pallet that can be produced from iron sheets of low carbon steel, medium and low carbon steel, and ultra low carbon steel as well as zinc sheets commonly used as materials. In particular, it is possible to use ultra-low carbon steel close to pure iron. Ultra low carbon steel is inherently weak in strength and unsuitable for use as a material for a structure, but its disadvantages are compensated for by the present invention. For reference, low carbon steel refers to steel containing 0.025% or more and less than 0.10%, medium and low carbon steels and 0.010% or more and less than 0.025% and ultra low carbon steels and less than 0.010%. Here, the ultra low carbon steel is a conventional term commonly referred to in the art, except for the case of 0%. In the case of the 23rd page of 'Industrial Examination Criteria for Alloy Sectors' published by the JPO, if it is listed as less than 0.010%, 0% is not included.

In the production of the steel pallet of the present invention is processed by a press other than the conventional roll forming method, in particular when manufacturing the legs, after drawing, the compression molding process to stop the leg thickness rather than the iron plate thickness before processing There is a gist.

' 형상인 직육면체형상의 철재파렛트 부재를 여러개 적층하여 구성되는 것을 특징으로 하는 철재파렛트이다. 상기의 철재파렛트 부재 3개를 상판으로 하고, 이들 3개를 뒤집은 것을 하판으로 하고, 상기 하판의 하부에는 다리부위가 결합되게 구성한다. 특히, 상기 다리부위는 드로잉 후, 금형펀치와 다이를 사용하여 압축성형의 공정을 순차적으로 행하여 성형되며, 필요에 따라서 압축성형후 재압축성형하여 다리부위의 두께를 더 크게 하는 것을 특징으로 하는 철재파렛트이다.The configuration is as follows. Cross section and vertical section

It is a steel pallet characterized in that a plurality of rectangular parallelepiped steel pallet members are laminated. The above three steel pallet members are used as the upper plate, and the three of these steel pallet members are inverted as the lower plate, and the lower portion of the lower plate is configured such that the leg portion is coupled. In particular, the leg portion is formed by sequentially performing a compression molding process using a mold punch and die after drawing, and if necessary, recompression molding after compression molding to increase the thickness of the leg portion It is a pallet.

When described in detail by the accompanying drawings as follows.

1 is a perspective view of an iron pallet of the present invention, Figure 2 is a detailed view of the iron pallet member of the present invention. 3 is a cross-sectional view taken along line AA ′ of FIG. 2, and FIG. 4 is a partial cross-sectional view of a leg portion of the present invention. 5 is a detailed view of still another embodiment of the steel pallet member of the present invention, Figure 6 is a cross-sectional view taken along line BB 'of FIG. 7 is an exploded perspective view of the iron pallet and the leg support of the present invention, Figure 8 is a detailed view of a conventional steel pallet.

Accordingly, the present invention achieves the rigidity and light weight of the structure while maintaining the shape of the pallet, and is easy to use and excellent in formability at the time of manufacture. Can be loaded

The process is made by pressing an iron plate, which is a raw material, by pressing, and pressing it again using a die that corresponds to a quadrilateral punch in the reverse direction to form a steel pallet member having a shape shown in the drawing. If necessary, the iron pallet member can be formed simultaneously with a drainage hole, embossing portion for strengthening the strength, strength portion, etc., the detailed configuration thereof is disclosed in the steel pallet, which was previously filed by the applicant, the prior art Since it is specified as, detailed description thereof will be omitted.

In addition, as an embodiment, as shown in Figure 5 or 6 by drilling a through-hole at the position where the leg portion of the steel pallet member is coupled and then press the peripheral portion by the thickness in a manner to take a press to strengthen the strength is made When forming a plurality of steel pallets, when the plurality of steel pallets are stacked, the leg portions of the upper steel pallets penetrate to form overlapping materials.

The steel pallet member thus produced is stacked in an appropriate number up and down to form an upper plate and a lower plate, and a leg portion is mounted on the lower portion. The fastening method of the joining leg of the upper and lower plates adopts conventional piece fastening or spot welding method, but spot welding method is particularly recommended.

In the manufacture of the leg part, when the leg part is repeated only by drawing conventionally, the bent part material broke or a crack generate | occur | produced.

Therefore, in the present invention, the primary processing is designed in the primary molding by the volume of the leg portion, and then deep drawing is formed into an alternative leg shape, in which case the thickness is reduced than the raw material. Afterwards, the secondary molding is performed by using a punch and a die of the die, and finally compression molding to reduce the height and increase the thickness by a desired size. If necessary, tertiary molding can be performed by adding the compression step.

Therefore, the leg portion of the present invention has strength enough to load an article as its thickness increases even when using low carbon steel or ultra low carbon steel.

Iron plate used in the present invention can be used in addition to the commonly used zinc steel sheet as well as soft steel plate, such as low carbon steel or ultra-low carbon steel.

In addition, the lower portion of the leg portion of the present invention is formed with a locking hole in the center of the lower surface of the leg portion it is possible to be detachably coupled to the clip portion of the lower support to be manufactured separately. This is to prevent the problem that the leg portion of the steel pallet of the present invention can fall into the gap of the bottom surface of the storage place such as a shelf. The lower support is using a steel plate of the same size as the horizontal or vertical length of the steel pallet of the present invention or the same size as the bottom surface of the steel pallet of the present invention, by pressing the appropriate position where the leg portion is to be pressed by pressing The clip portion may be integrally formed, or a separate clip may be manufactured and combined by a conventional method such as welding. Detailed description thereof is well known by those skilled in the art and a detailed description thereof will be omitted.

' 형상인 직육면체형상의 철재파렛트 부재(30), 또는 가로단면이 '

' 형상이고 세로단면이 '

' 형상인 직육면체형상의 철재파렛트 부재(30)를 여러개 적층하여 구성되는 것을 특징으로 한다. 또한, 상기의 철재파렛트 부재는 종래에 일반적으로 많이 이용되는 강판뿐만아니라 저탄소강 또는 극저탄소강의 철판으로도 제작 가능하다. 상기의 철재파렛트 부재 3개를 상판으로 하고, 이들 3개를 뒤집은 것을 하판으로 하고, 상기 하판의 하부에는 다리부위가 결합되어 본 발명의 철재파렛트가 완성된다. 물론 상기 철재파렛트의 상판 또는 하판으로 이용되는 철재파렛트 부재의 수는 다양하게 변경이 가능함은 자명하다. 또한, 일실시예로서 상기 철재파렛트 부재는 다리부위가 결합되는 위치에 프레스로 찍어서 관통공을 형성하되 관통공의 외주가 철재파렛트의 두께만큼 절곡되어 밴딩부가 형성되게 프레스 작업이 이루어져, 적재 시 상부의 철재파렛트의 다리부위가 상기 관통공을 관통하여 겹침적재되는 것이 바람직하다.The steel pallet of the present invention as described above has a horizontal cross section and a vertical cross section '

Is a rectangular parallelepiped steel pallet member 30, or

'Shape and vertical cross section'

It is characterized in that it is configured by stacking a plurality of rectangular parallelepiped steel pallet member (30). In addition, the steel pallet member can be produced from a low carbon steel or an ultra low carbon steel sheet as well as a steel sheet commonly used in the prior art. The above three steel pallet members are used as the upper plate, and the three of these steel pallets are inverted as the lower plate, and the lower portion of the lower plate is joined to the legs to complete the steel pallet of the present invention. Of course, it is obvious that the number of steel pallet members used as the upper or lower plate of the steel pallet can be variously changed. In addition, as an embodiment, the steel pallet member is formed by pressing a position where the leg portion is coupled to form a through hole, but the outer circumference of the through hole is bent by the thickness of the steel pallet to form a banding part, and the press work is carried out. The leg portion of the steel pallet of the penetrating through the through hole is preferably stacked.

After drawing, the leg portion may be reinforced in such a manner as to sequentially perform compression molding by using a mold punch and a die to increase the thickness of the leg portion than after drawing. The leg portion manufactured as described above can maintain strength sufficiently even if it is made of low carbon steel or ultra low carbon steel. The leg portion may be subjected to a compression molding process using a mold punch and a die in order to make the thickness of the leg portion larger than that of the raw iron plate material. Of course, it is possible to increase the thickness of the leg portion by compression molding after compression molding.

In addition, the leg portion is formed by the engaging hole in the center of the lower surface, so that the clip portion of the lower support to be produced separately and the engaging hole is detachably coupled, the leg portion of the steel pallet of the present invention is a loading place such as a shelf You can solve the problem of falling into the gap.

Accordingly, the present invention achieves the rigidity and light weight of the structure while maintaining the form of the pallet even when using the iron plate of a variety of materials, it is easy to use and formability at the time of manufacturing, by applying the leg portion when loading the ball pallet In addition, it is possible to stack the legs and to produce steel pallets that do not require protection when used as export pallets.

Claims (14)

delete delete delete delete It is composed by stacking a plurality of rectangular parallelepiped steel pallet members 30 having a cross-sectional shape and a vertical cross section of a protrusion and a concave portion alternately, and the three steel pallet members 30 as the upper plate 10. And, these three members are turned over to the lower plate 20, the lower portion of the lower plate 20 is coupled to the leg portion 40, the position of the leg portion 40 of the steel pallet member 30 is coupled Press through to form a through-hole 70, the outer periphery of the through-hole 70 is bent to form a bending portion, the press work is made, and when loading the steel pallet leg portion of the steel pallet is formed on the bottom of the steel pallet The through hole 70, the center of the lower surface of the leg portion is formed with a catching hole 50, the clip portion of the lower support 60, which is separately produced in the catching hole 50 is stacked overlapping Steel wave characterized by Let delete delete delete delete delete The horizontal cross section is formed by stacking a plurality of rectangular parallelepiped steel pallet members 30 having a square shape having a lower side and a vertical cross section having irregularities repeatedly formed by alternating protrusions and concave portions, wherein the three steel pallet members 30 are The upper plate 10, the three of these members upside down to the lower plate 20, the lower portion of the lower plate 20 is coupled to the leg portion 40, the leg portion of the steel pallet member 30 (40) ) To form a through-hole 70 by pressing the combined position, but the outer circumference of the through-hole 70 is bent to form a bending portion, the press work is made, and also the steel pallet legs when loading the steel pallet The through hole 70 formed in the pallet bottom plate, and the engaging hole 50 is formed in the center of the lower surface of the leg portion, the clip portion of the lower support 60 separately manufactured in the engaging hole 50 is removable Overlapping Steel pallet, characterized in that delete delete delete

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