JP3742050B2

JP3742050B2 - Manufacturing method of lashing metal fittings

Info

Publication number: JP3742050B2
Application number: JP2002298250A
Authority: JP
Inventors: 清吉森
Original assignee: Toyota Tsusho Corp
Current assignee: Toyota Tsusho Corp
Priority date: 2002-10-11
Filing date: 2002-10-11
Publication date: 2006-02-01
Anticipated expiration: 2022-10-11
Also published as: JP2004131136A; CN1214960C; CN1496938A

Description

【０００１】
【発明の属する技術分野】
本発明はコンテナに収納した箱形の荷物が輸送中に動かないように固定するラッシング金具の製造方法に関する。
【０００２】
【従来の技術】
海上輸送用コンテナでは、コンテナに収納した木箱が船舶の動揺で動いて荷崩れが起きないようにラッシング材を用いて荷物を固定する。従来、この種のラッシング材には、例えば９０ｍｍ角程度の大きさの木材を使用し、この木材を木箱の側面に当てた状態でコンテナの底面に釘で打ち付けて固定している。
【０００３】
【発明が解決しようとする課題】
しかしながら、木材をラッシング材に用いる場合、木材に付着している害虫を除去するため消毒しなければならず、また、耐久性も劣るので、繰り返し使用することができず、輸送コストが高くなる。
本発明はかかる点に鑑み、輸送コストの低減に寄与できるラッシング金具の製造方法を提供することを目的とする。
【０００４】
【課題を解決するための手段】
請求項１に記載の発明は、材質に鉄板を使用し、底面と、底面の後端部から直角に折り曲げて立設した立面と、底面の左右両端から立面の左右両端にかけて連設した補強片を備え、底面と立面に釘穴を貫通して設け、立面の上部中央に取っ手穴を貫通して設けたラッシング金具の製造方法であって、
前記立面となる長方形の第１面（２１Ａ）と、該長方形の第１面（２１Ａ）の一端に連接する台形の第２面（２１Ｅ）と、長方形の第１面（２１Ａ）の中心線の左右に対称配置され、該長方形の第１面（２１Ａ）の左右の端部に連接する一対の補強用の第３面（２１Ｂ，２１Ｂ）と、各補強用の第３面（２１Ｂ）に連接し、台形の第２面（２１Ｅ）の角部（２１ｇ）と相補形状を成す切欠部（２１ｆ）を有する第４面（２１Ｃ）から成る打ち抜き品を鉄板素材からプレス加工する第１工程と、
前記打ち抜き品の前記第４面（２１Ｃ）と前記台形の第２面（２１Ｅ）を前記長方形の第１面（２１Ａ）に対し直角となるように折り曲げる第２工程と、
前記補強用の第３面（２１Ｂ）を前記長方形の第１面（２１Ａ）に対して直角に折り曲げて、前記台形の第２面（２１Ｅ）の角部（２１ｇ）と第４面（２１Ｃ）の切欠部（２１ｇ）を当接させる第３工程と、
前記台形の第２面（２１Ｅ）と２枚の第４面（２１Ｃ）が当接する部分にスポット溶接を施して、前記台形の第２面（２１Ｅ）と２枚の第４面（２１Ｃ）を固着し、もって、前記第３面（２１Ｃ）を前記補強片と成し、前記台形の第２面（２１Ｃ）と２枚の第４面（２１Ｃ）を前記底面と成す第４工程から成ることを特徴とする。
【０００５】
【発明の作用・効果】
本発明に係る製造方法で製造したラッシング金具を使ってコンテナに収納した荷物を固定するには、立面を荷物の側面に当接した状態で底面の釘穴に釘を打ち付けてラッシング金具をコンテナに固定する。
本発明に係るラッシング金具の製造方法は、材質に鉄板を採用したので、木材のように害虫除去のための消毒を必要しないだけでなく、耐久性に優れているので、繰り返し使用できる。
また、本発明によれば、板金プレスによって低コストで製造できる。
【０００６】
【発明の実施の形態】
以下に本発明を図面に基づき説明するに、図１及び図２には本発明に係る製造方法で製造したラッシング金具１０が示されている。当該ラッシング金具１０は底面１１と、底面１１の後端部から直角に折り曲げて立設した立面１２と底面１１の左右両端から立面１２の左右両端にかけて連設した補強片１３及び立面１２の上端部から内側に折り曲げた補強片１４から構成されている。底面１１と立面１２には複数個の釘穴１５が貫通して設けられ、立面１２の上部中央には取っ手穴１６が貫通して設けられている。
【０００７】
第１実施形態に係るラッシング金具１０は材質に鉄板を使用し、鉄板製素板２０から所要形状の打ち抜き品２１をプレス機で剪断加工、打ち抜き品をプレス機で曲げ加工して製作する。図３に打ち抜き品の板取り図を示す。打ち抜き品２１は点線で示す折り曲げ線で区画される長方形の面２１Ａ、長方形の中心線の左右に対称配置された一対の面２１Ｂ、各面２１Ｂに連接する面２１Ｃ、長方形の面２１Ａの一端に連接する面２１Ｄ、長方形の面２１Ａの他端に連接する面２１Ｅから構成される。面２１Ａには取っ手穴１６と４個の釘穴１５が打ち抜かれている。面Ｃには４個の釘穴１５が打ち抜かれている。面２１Ｃの切欠部２１ｆと面２１Ｅの角部２１ｇは相補形状に形成されている。
【０００８】
図４に打ち抜き品をプレス機で曲げ加工してラッシング金具１０に成形する工程を示す。打ち抜き品２１の面２１Ｃ、面２１Ｄ及び面２１Ｅを面２１Ａに対し直角となるように折り曲げる。次ぎに面２１Ｂを面２１Ａに対して直角に折り曲げ、面２１Ｅの角部と面２１Ｃの切欠部を当接させる。そうして、面２１Ｅと２枚の面２１Ｃが当接する部分にスポット溶接１７を施して、面２１Ｅと面２１Ｃを固着しする。
かかる一連の曲げ加工により、面２１Ａが立面に、面２１Ｃと面２１Ｅが合わさって底面に、そして面２１Ｂが補強片１３に、面２１Ｄが補強片１４に成形される。
【０００９】
図５にラッシング金具１０の使用方法の一例を図示する。コンテナ７０の角隅に、荷物の木箱７１の後部角隅を押し当てて設置する。そうしておいて、ラッシング金具１０の立面１２を木箱７１の前面に当接させ、その状態でラッシング金具１０の底面１１に釘を打ち付けて金具１０をコンテナ７０の底面に固定する。次ぎに、別の木箱７２をコンテナ７０の壁面と木箱７１の側面に押し当てる。そうしておいて、ラッシング金具３０の一方の立面３２を木箱７１の側面に押し当て、他方の立面３２を木箱７２の前面に押し当て、釘で金具３０の底面３１をコンテナ７０に固定する。また、別のラッシング金具１０の立面１２を木箱７２の前面に押し当てて、釘で金具１０の底面１１をコンテナ７０に固定する。さらに、木箱７２の角隅にラッシング金具５０の立面５２を押し当て釘で金具５０の底面５１をコンテナ７０に固定する。なお、木箱の中の品物を傷つけないように木箱７１，７２に金具１０，３０，５０を釘で固定すれば、より強固に木箱７１，７２を固定できる。
【図面の簡単な説明】
【図１】本発明に係る製造方法で製造したラッシング金具を示す前面から見た斜視図である。
【図２】同ラッシング金具を示す背面から見た斜視図である。
【図３】同ラッシング金具の打ち抜き品の板取り図である。
【図４】同ラッシング金具を打ち抜き品から曲げ成形する工程を示す説明図である。
【図５】同ラッシング金具の使用方法を示す説明図である。
【符号の説明】
１０，３０，５０…ラッシング金具、１１，３１，５１…底面、１２，３２，５２…立面、１５，３４，５３…釘穴、１６，３３，５４…取手穴。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for manufacturing a lashing metal fitting for fixing a box-shaped load housed in a container so as not to move during transportation.
[0002]
[Prior art]
In a marine shipping container, a lashing material is used to fix a load so that the wooden box stored in the container does not collapse due to the movement of the ship. Conventionally, for this type of lashing material, for example, wood having a size of about 90 mm square is used, and this wood is applied to the bottom surface of the container with a nail and fixed with a nail.
[0003]
[Problems to be solved by the invention]
However, when wood is used as a lashing material, it must be sterilized in order to remove pests adhering to the wood, and since it is inferior in durability, it cannot be used repeatedly, resulting in high transportation costs.
In view of this point, an object of the present invention is to provide a method for manufacturing a lashing fitting that can contribute to a reduction in transportation cost.
[0004]
[Means for Solving the Problems]
The invention according to claim 1 uses an iron plate as a material, and is continuously provided from the bottom surface, an upright surface bent at a right angle from the rear end of the bottom surface, and from the left and right ends of the bottom surface to the left and right ends of the elevation surface. A method of manufacturing a lashing metal fitting provided with a reinforcing piece, provided through a nail hole in the bottom surface and the vertical surface, and provided through a handle hole in the upper center of the vertical surface,
The rectangular first surface (21A) serving as the elevation surface, the trapezoidal second surface (21E) connected to one end of the rectangular first surface (21A), and the center line of the rectangular first surface (21A) And a pair of reinforcing third surfaces (21B, 21B) connected to the left and right ends of the rectangular first surface (21A), and each reinforcing third surface (21B). A first step of pressing a punched product comprising a fourth surface (21C) having a notch portion (21f) which is connected and has a complementary shape with a corner portion ( 21g) of a trapezoidal second surface (21E) from an iron plate material; ,
A second step of bending the fourth surface (21C) and the trapezoidal second surface (21E) of the punched product so as to be perpendicular to the rectangular first surface (21A);
The reinforcing third surface (21B) is bent at a right angle with respect to the rectangular first surface (21A), and the corner (21g) and the fourth surface (21C) of the trapezoidal second surface (21E). A third step of contacting the notch (21g) of
Spot welding is performed on a portion where the trapezoidal second surface (21E) and the two fourth surfaces (21C) are in contact with each other, so that the trapezoidal second surface (21E) and the two fourth surfaces (21C) are formed. And a fourth step of forming the third surface (21C) with the reinforcing piece, and forming the trapezoidal second surface (21C) and two fourth surfaces (21C) with the bottom surface. It is characterized by.
[0005]
[Operation and effect of the invention]
In order to fix the luggage stored in the container using the lashing metal fitting manufactured by the manufacturing method according to the present invention, the lashing metal fitting is placed in the container by hitting the nail into the nail hole on the bottom surface while the elevation surface is in contact with the side surface of the luggage. To fix.
Since the method for manufacturing a lashing metal fitting according to the present invention employs an iron plate as a material, it does not require disinfection for removing pests like wood, and is excellent in durability and can be used repeatedly.
Moreover, according to this invention, it can manufacture at low cost with a sheet metal press.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 show a lashing fitting 10 manufactured by the manufacturing method according to the present invention. The lashing metal fitting 10 includes a bottom surface 11, an upright surface 12 that is bent upright from a rear end portion of the bottom surface 11, and a reinforcing piece 13 and an upright surface 12 that are continuously provided from the left and right ends of the bottom surface 11 to the left and right ends of the upright surface 12. It is comprised from the reinforcement piece 14 bent inside from the upper end part. A plurality of nail holes 15 are provided through the bottom surface 11 and the vertical surface 12, and a handle hole 16 is provided through the center of the upper surface of the vertical surface 12.
[0007]
The lashing metal fitting 10 according to the first embodiment uses an iron plate as a material, and is manufactured by shearing a punched product 21 having a required shape from the iron plate base plate 20 with a press machine and bending the punched product with a press machine. FIG. 3 shows a plan view of the punched product. The punched product 21 includes a rectangular surface 21A defined by a folding line indicated by a dotted line, a pair of surfaces 21B symmetrically arranged on the left and right of the center line of the rectangle, a surface 21C connected to each surface 21B, and one end of the rectangular surface 21A. It consists of a surface 21D that is connected and a surface 21E that is connected to the other end of the rectangular surface 21A. A handle hole 16 and four nail holes 15 are punched in the surface 21A. On the surface C, four nail holes 15 are punched. The cutout portion 21f of the surface 21C and the corner portion 21g of the surface 21E are formed in a complementary shape.
[0008]
FIG. 4 shows a process of bending the punched product into a lashing metal fitting 10 by a press machine. The surfaces 21C, 21D, and 21E of the punched product 21 are bent so as to be perpendicular to the surface 21A. Next, the surface 21B is bent at a right angle to the surface 21A, and the corners of the surface 21E and the notches of the surface 21C are brought into contact with each other. Then, spot welding 17 is applied to the portion where the surface 21E and the two surfaces 21C abut, and the surface 21E and the surface 21C are fixed.
By such a series of bending processes, the surface 21A is formed into an upright surface, the surfaces 21C and 21E are combined to form the bottom surface, the surface 21B is formed into the reinforcing piece 13, and the surface 21D is formed into the reinforcing piece 14.
[0009]
FIG. 5 illustrates an example of how to use the lashing fitting 10. The rear corner of the wooden box 71 of the luggage is pressed against the corner of the container 70 for installation. Then, the rising surface 12 of the lashing metal fitting 10 is brought into contact with the front surface of the wooden box 71, and in this state, nails are driven against the bottom surface 11 of the lashing metal fitting 10 to fix the metal fitting 10 to the bottom surface of the container 70. Next, another wooden box 72 is pressed against the wall surface of the container 70 and the side surface of the wooden box 71. Then, one rising surface 32 of the lashing metal fitting 30 is pressed against the side surface of the wooden box 71, the other vertical surface 32 is pressed against the front surface of the wooden box 72, and the bottom surface 31 of the metal fitting 30 is nipped with the container 70. To fix. Further, the rising surface 12 of another lashing metal fitting 10 is pressed against the front surface of the wooden box 72, and the bottom surface 11 of the metal fitting 10 is fixed to the container 70 with a nail. Further, the vertical surface 52 of the lashing metal fitting 50 is pressed against the corner of the wooden box 72 and the bottom surface 51 of the metal fitting 50 is fixed to the container 70 with a nail. In addition, if the metal fittings 10, 30, and 50 are fixed to the wooden boxes 71 and 72 with nails so as not to damage the items in the wooden box, the wooden boxes 71 and 72 can be fixed more firmly.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a lashing fitting manufactured by a manufacturing method according to the present invention as seen from the front.
FIG. 2 is a perspective view showing the lashing fitting viewed from the back side.
FIG. 3 is a plan view of a punched product of the lashing fitting.
FIG. 4 is an explanatory view showing a process of bending the lashing fitting from a punched product.
FIG. 5 is an explanatory view showing how to use the lashing fitting.
[Explanation of symbols]
10, 30, 50 ... Lashing metal fittings, 11, 31, 51 ... bottom, 12, 32, 52 ... elevation, 15, 34, 53 ... nail holes, 16, 33, 54 ... handle holes.

Claims

材質に鉄板を使用し、底面と、底面の後端部から直角に折り曲げて立設した立面と、底面の左右両端から立面の左右両端にかけて連設した補強片を備え、底面と立面に釘穴を貫通して設け、立面の上部中央に取っ手穴を貫通して設けたラッシング金具の製造方法であって、Uses iron plate as the material, and includes a bottom surface, an upright surface that is bent at a right angle from the rear end of the bottom surface, and reinforcing pieces that are connected from the left and right ends of the bottom surface to the left and right ends of the vertical surface. A method of manufacturing a lashing metal fitting provided through a nail hole and penetrating a handle hole in the upper center of the vertical surface,
前記立面となる長方形の第１面（２１Ａ）と、該長方形の第１面（２１Ａ）の一端に連接する台形の第２面（２１Ｅ）と、長方形の第１面（２１Ａ）の中心線の左右に対称配置され、該長方形の第１面（２１Ａ）の左右の端部に連接する一対の補強用の第３面（２１Ｂ，２１Ｂ）と、各補強用の第３面（２１Ｂ）に連接し、台形の第２面（２１Ｅ）の角部（２１ｇ）と相補形状を成す切欠部（２１ｆ）を有する第４面（２１Ｃ）から成る打ち抜き品を鉄板素材からプレス加工する第１工程と、The rectangular first surface (21A) serving as the elevation surface, the trapezoidal second surface (21E) connected to one end of the rectangular first surface (21A), and the center line of the rectangular first surface (21A) And a pair of reinforcing third surfaces (21B, 21B) connected to the left and right ends of the rectangular first surface (21A), and each reinforcing third surface (21B). A first step of pressing a punched product comprising a fourth surface (21C) having a notch portion (21f) which is connected and has a complementary shape with a corner portion (21g) of a trapezoidal second surface (21E) from an iron plate material ,
前記打ち抜き品の前記第４面（２１Ｃ）と前記台形の第２面（２１Ｅ）を前記長方形の第１面（２１Ａ）に対し直角となるように折り曲げる第２工程と、A second step of bending the fourth surface (21C) and the trapezoidal second surface (21E) of the punched product so as to be perpendicular to the rectangular first surface (21A);
前記補強用の第３面（２１Ｂ）を前記長方形の第１面（２１Ａ）に対して直角に折り曲げて、前記台形の第２面（２１Ｅ）の角部（２１ｇ）と第４面（２１Ｃ）の切欠部（２１ｇ）を当接させる第３工程と、The reinforcing third surface (21B) is bent at a right angle with respect to the rectangular first surface (21A), and the corner (21g) and the fourth surface (21C) of the trapezoidal second surface (21E). A third step of contacting the notch (21g) of
前記台形の第２面（２１Ｅ）と２枚の第４面（２１Ｃ）が当接する部分にスポット溶接を施して、前記台形の第２面（２１Ｅ）と２枚の第４面（２１Ｃ）を固着し、もって、前記第３面（２１Ｃ）を前記補強片と成し、前記台形の第２面（２１Ｃ）と２枚の第４面（２１Ｃ）を前記底面と成す第４工程から成ることを特徴とするラッシング金具の製造方法。Spot welding is performed on a portion where the trapezoidal second surface (21E) and the two fourth surfaces (21C) are in contact with each other, so that the trapezoidal second surface (21E) and the two fourth surfaces (21C) And a fourth step of forming the third surface (21C) with the reinforcing piece, and forming the trapezoidal second surface (21C) and two fourth surfaces (21C) with the bottom surface. A manufacturing method of a lashing metal fitting characterized by the above.