Iron pallet, method of manufacturing the same, and intermediate support for the same

Abstract

The present invention relates to an iron pallet which is essentially used to conveniently, quickly and correctly handle articles or products when producing, transporting and keeping the articles or products, a method of manufacturing the same, and an intermediate support for the same. A coating layer is formed on an upper surface of an iron pallet which will come into contact with a product to be placed on the iron pallet, by processing a solid material at a high temperature using plasma, arc or flame to produce fine particles and by momentarily jetting the fine particles to the upper surface of the iron pallet such that fine particles are formed on the upper surface of the iron pallet. Therefore, fine depressions and prominences are created to prevent slip of the product placed on the pallet, and excellent corrosion resistance is rendered when compared to a conventional iron pallet.

1 . An iron pallet characterized in that a coating layer is formed on an upper surface of the iron pallet which will come into contact with a product to be placed on the iron pallet, by processing a solid material at a high temperature using one of plasma, arc and flame to produce fine particles and by momentarily jetting the fine particles to the upper surface of the iron pallet such that fine particles are formed on the upper surface of the iron pallet. 
   
   
       2 . The iron pallet according to  claim 1 , wherein the coating surface is formed over a distance of 50 mm when measured from respective edges of the iron pallet. 
   
   
       3 . The iron pallet according to  claim 1 , wherein the fine particles are formed from one selected from a group consisting of zinc, stainless steel, alloy of zinc and aluminum, and alloy of zinc and stainless steel. 
   
   
       4 . The iron pallet according to  claim 1 , wherein the fine particles comprise a mixture of stone, sand and iron powder. 
   
   
       5 . A method for manufacturing an iron pallet, comprising the steps of:
 forming a material such as metal, nonmetal and ceramic into wire or powder using one of plasma, arc and flame;   melting and momentarily jetting the wire or fine particles having the shape of the powder to a surface of the iron pallet using a thermal sprayer; and   sealing the surface of the iron pallet to which the wire or fine particles are jetted, by applying liquid phase thermosetting resin such as epoxy resin, urethane resin and lacquer resin on the surface of the iron pallet using a sprayer, a brush or a roll.   
   
   
       6 . A method for manufacturing an iron pallet, comprising the steps of:
 forming a material such as metal, nonmetal and ceramic into wire or powder using one of plasma, arc and flame;   melting and momentarily jetting the wire or fine particles having the shape of the powder to a surface of an iron plate using a thermal sprayer;   sealing the surface of the iron plate to which the wire or fine particles are jetted, by applying liquid phase thermosetting resin such as epoxy resin, urethane resin and lacquer resin on the surface of the iron plate using a sprayer, a brush or a roll; and   cutting the iron plate having undergone the jetting and sealing steps and fabricating a pallet.   
   
   
       7 . An iron pallet comprising an upper plate, a lower plate and an intermediate member, wherein the intermediate member has a substantially U-shaped cross-section, concaved reinforcing portions are formed on respective walls of the intermediate member, and locking projections for locking the upper and lower plates are formed on upper and lower ends of the intermediate member on which the concaved reinforcing portions are not formed. 
   
   
       8 . The iron pallet according to  claim 7 , wherein each locking projection is divided into two parts which are bent in opposite directions. 
   
   
       9 . An iron pallet comprising an upper plate and a lower plate, wherein, after one end of the upper plate is overlapped with the lower plate, a punch serving as an upper mold is pressed into a through-hole of a lower mold by a press, whereby a press joint part having a hole is formed between the upper and lower plates. 
   
   
       10 . The iron pallet according to  claim 9 , wherein a push pin and a support spring are installed below the lower mold, such that, after the punch is introduced into the lower mold and simultaneously perforates the upper and lower plates, hole-defining portions of the upper and lower plates are further bent outward by the push pin biased by returning force of the spring. 
   
   
       11 . The iron pallet according to  claim 9 , wherein an intermediate plate is intervened between the upper and lower plates, and the punch serving as the upper mold is pressed into the through-hole of the lower mold by the press, whereby press joint parts are respectively formed between the upper and intermediate plates and between the intermediate and lower plates. 
   
   
       12 . The iron pallet according to any one of  claims 9  to  11 , wherein the lower mold is constructed to be moved in a radial direction, and an annular spring circumferentially surrounds the lower mold, such that the lower mold can be moved radially outward when the punch is lowered and can be moved radially inward to be returned to its original shape when the punch is raised. 
   
   
       13 . An iron pallet comprising an upper plate and a lower plate, wherein, after one end of the upper plate is overlapped with the lower plate, a punch serving as an upper mold is pressed by a press into a concaved part of a lower mold which is defined by a plurality of split movable dies assembled with one another, whereby a press joint part is formed between the upper and lower plates such that the press joint part is not perforated but undergoes drawing. 
   
   
       14 . The iron pallet according to  claim 13 , wherein an intermediate plate is intervened between the upper and lower plates, and the press joint part is formed integrally with the upper plate, the intermediate plate and the lower plate by the punch serving as the upper mold and the lower mold. 
   
   
       15 . The iron pallet according to  claim 13  or  14 , wherein the press joint part has a configuration of a circle, a rectangle or a polygon. 
   
   
       16 . An iron pallet characterized in that a surface of the pallet is coated with a coating material, and the coating material is one selected from a group consisting of a yellow ocher constituent, a bentonite constituent, a zeolite constituent, a bioceramic constituent and a nano-sized silver constituent. 
   
   
       17 . The iron pallet according to  claim 16 , wherein the pallet has a box-shaped configuration. 
   
   
       18 . An iron pallet characterized in that a lower plate is installed under an upper plate, a locking lip which project upward and then is bent is formed at one side end of the lower plate, and the upper plate is fitted and locked into a space delimited by the locking lip. 
   
   
       19 . An intermediate support intervened between and locked to upper and lower plates of an iron pallet to support the upper and lower plates, characterized in that the intermediate support includes a front wall which is formed with a concaved portion and side walls which are bent from both side ends of the front wall and are formed with concaved portions, so that the intermediate support has a substantially U-shaped cross-section, and the upper and lower ends of the front wall and the side walls are bent inward, so that the upper and lower plates can be coupled to the intermediate support over wide areas. 
   
   
       20 . The intermediate support according to  claim 19 , wherein the upper and lower plates are coupled to the intermediate support by welding. 
   
   
       21 . The intermediate support according to  claim 19 , wherein the intermediate support is formed by cutting a thin iron plate, bending both side portions of the cut thin iron plate to define a substantially U-shaped cross-section and bending inward both upper and lower end portions of the cut thin iron plate so that the upper and lower plates can be coupled to the intermediate support over surface areas which are more wide than the other portions of the intermediate support.