JP4188333B2 - Manufacturing method of lashing metal fittings - Google Patents

Manufacturing method of lashing metal fittings Download PDF

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JP4188333B2
JP4188333B2 JP2005107072A JP2005107072A JP4188333B2 JP 4188333 B2 JP4188333 B2 JP 4188333B2 JP 2005107072 A JP2005107072 A JP 2005107072A JP 2005107072 A JP2005107072 A JP 2005107072A JP 4188333 B2 JP4188333 B2 JP 4188333B2
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fold line
lashing
metal fitting
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JP2005306486A (en
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清吉 森
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Toyota Tsusho Corp
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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。   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.

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。
なし 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.
None

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。 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.

請求項１に記載の発明は、底面（３１）に直角の隅部を有し、該隅部を区画する２辺（３１ａ）のそれぞれからほぼ直角に立設した立面（３２）を備え、底面（３１）に釘穴（３４）を貫通して設け、立面（３２）に取っ手穴（３３）を貫通して設けた鉄板製のラッシング金具（３０）の製造方法であって、
互いに直交する第１折り曲げ線（４１ｅ）と第２折り曲げ線（４１ｇ）によって区画される第１面（４１Ｃ）、第２面（４１Ｄ）、第３面（４１Ａ）及び第４面（４１Ｂ）から成り、
第３面（４１Ａ）と第４面（４１Ｂ）は互いに第１折り曲げ線（４１ｅ）に関して略線対称となる形状を有し、
第１面（４１Ｃ）と第２面（４１Ｄ）はそれぞれ前記第２折り曲げ線（４１ｇ）を一辺とするとともに互いに前記第１折り曲げ線（４１ｅ）の延長線に関して略線対称となり、かつ対向する斜辺（３１ｂ，３１ｃ）によって直角の切欠部（４１ｆ）が形成される略三角形状を有する打ち抜き品（４１）を打ち抜き加工する第１工程と、
打ち抜き品（４１）の第１面（４１Ｃ）と第２面（４１Ｄ）をそれぞれ第３面（４１Ａ）と第４面（４１Ｂ）に対し直角となるように折り曲げる第２工程と、
第４面（４１Ｂ）を第３面（４１Ａ）に対して直角に折り曲げ、もって第１面（４１Ｃ）の斜辺と第２面（４１Ｄ）の斜辺（３１ｂ，３１ｃ）を当接させる第３工程と、
第１面（４１Ｃ）と第２面（４１Ｄ）の先端部にスポット溶接を施して、第１面（４１Ｃ）と第２面（４１Ｄ）を固着し、もって、第３面（４１Ａ）と第４面（４１Ｂ）を前記立面（３２）に、第１面（４１Ｃ）と第２面（４１Ｄ）を底面（３１）と成す第４工程から成ることを特徴とする The invention according to claim 1 includes a rising surface (32) which has a right-angled corner on the bottom surface (31) and is erected substantially perpendicularly from each of two sides (31a) defining the corner , A method of manufacturing a lashing fitting (30) made of an iron plate provided with a nail hole (34) penetrating a bottom surface (31) and a handle hole (33) penetrating a standing surface ( 32) ,
From the first surface (41C), the second surface (41D), the third surface (41A), and the fourth surface (41B) defined by the first fold line (41e) and the second fold line (41g) that are orthogonal to each other. Consisting of
The third surface (41A) and the fourth surface (41B) have a shape that is substantially line-symmetric with respect to the first fold line (41e).
Each of the first surface (41C) and the second surface (41D) has the second fold line (41g) as one side and is substantially line symmetric with respect to the extension line of the first fold line (41e), and opposite oblique sides A first step of punching a punched article (41) having a substantially triangular shape in which a right-angled notch (41f) is formed by (31b, 31c) ;
A second step of bending so that perpendicular to the first surface of the punched member (41) (41C) and the third surface the second surface of the (41D), respectively (41A) and the fourth surface (41B),
A third step of bending the fourth surface (41B) at a right angle with respect to the third surface (41A) and bringing the oblique side of the first surface (41C) into contact with the oblique side (31b, 31c) of the second surface (41D). When,
Spot welding is applied to the front end portions of the first surface (41C) and the second surface (41D), and the first surface (41C) and the second surface (41D) are fixed, so that the third surface (41A) and the second surface (41A) It consists of the 4th process which makes 4 surfaces (41B) into the above-mentioned elevation surface (32), and makes the 1st surface (41C) and the 2nd surface (41D) into the bottom surface (31).

本発明に係る製造方法で製造したラッシング金具は一つの荷物に別の荷物を当接するようにして置いたときに使用する。この場合、一方の立面を一の荷物の側面に当接し、他方の立面を別の荷物の側面に当接させた状態で、底面に釘を打って金具をコンテナに固定する。こうすることにより、二つの荷物がラッシング金具で連結された状態でコンテナに固定される。   The lashing metal fitting manufactured by the manufacturing method according to the present invention is used when one load is placed in contact with another load. In this case, in a state where one elevation surface is in contact with the side surface of one load and the other elevation surface is in contact with the side surface of another load, a nail is hit on the bottom surface to fix the metal fitting to the container. By doing so, the two packages are fixed to the container in a state of being connected by the lashing metal fittings.

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、切り返し使用できる。
底面と立面からなる簡単な構造であるので、板金プレスによって低コストで製造できる。また、立面に取っ手穴を形成したので、取扱が容易である。 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.
Since it has a simple structure consisting of a bottom surface and an elevation surface, it can be manufactured at low cost by a sheet metal press. Moreover, since the handle hole is formed in the elevation, it is easy to handle.

底面（３１）に直角の隅部を有し、該隅部を区画する２辺（３１ａ）のそれぞれからほぼ直角に立設した立面（３２）を備え、底面（３１）に釘穴（３４）を貫通して設け、立面（３２）に取っ手穴（３３）を貫通して設けた鉄板製のラッシング金具（３０）の製造方法であって、
互いに直交する第１折り曲げ線（４１ｅ）と第２折り曲げ線（４１ｇ）によって区画される第１面（４１Ｃ）、第２面（４１Ｄ）、第３面（４１Ａ）及び第４面（４１Ｂ）から成り、
第３面（４１Ａ）と第４面（４１Ｂ）は互いに第１折り曲げ線（４１ｅ）に関して略線対称となる形状を有し、
第１面（４１Ｃ）と第２面（４１Ｄ）はそれぞれ前記第２折り曲げ線（４１ｇ）を一辺とするとともに互いに前記第１折り曲げ線（４１ｅ）の延長線に関して略線対称となり、かつ対向する斜辺（３１ｂ，３１ｃ）によって直角の切欠部（４１ｆ）が形成される略三角形状を有する打ち抜き品（４１）を打ち抜き加工し、
次に、打ち抜き品（４１）の第１面（４１Ｃ）と第２面（４１Ｄ）をそれぞれ第３面（４１Ａ）と第４面（４１Ｂ）に対し直角となるように折り曲げ、
続いて、第４面（４１Ｂ）を第３面（４１Ａ）に対して直角に折り曲げ、もって第１面（４１Ｃ）の斜辺と第２面（４１Ｄ）の斜辺（３１ｂ，３１ｃ）を当接させ、
次に、第１面（４１Ｃ）と第２面（４１Ｄ）の先端部にスポット溶接を施して、第１面（４１Ｃ）と第２面（４１Ｄ）を固着し、もって、第３面（４１Ａ）と第４面（４１Ｂ）を前記立面（３２）に、第１面（４１Ｃ）と第２面（４１Ｄ）を底面（３１）と成す。 The bottom surface (31) has a right-angled corner, and has an upright surface ( 32) erected substantially perpendicularly from each of the two sides (31a) defining the corner , and the bottom surface (31) has a nail hole (34 ) , And a method of manufacturing a lashing metal fitting (30) made of iron plate provided with a handle hole (33) penetrating the elevation (32) ,
From the first surface (41C), the second surface (41D), the third surface (41A), and the fourth surface (41B) defined by the first fold line (41e) and the second fold line (41g) that are orthogonal to each other. Consisting of
The third surface (41A) and the fourth surface (41B) have a shape that is substantially line-symmetric with respect to the first fold line (41e).
Each of the first surface (41C) and the second surface (41D) has the second fold line (41g) as one side and is substantially line symmetric with respect to the extension line of the first fold line (41e), and opposite oblique sides A punched product (41) having a substantially triangular shape in which a right-angled notch (41f) is formed by (31b, 31c) is punched,
Next, the first surface (41C) and the second surface (41D) of the punched product (41) are bent so as to be perpendicular to the third surface (41A) and the fourth surface (41B), respectively.
Subsequently, the fourth surface (41B) is bent at a right angle with respect to the third surface (41A), so that the hypotenuse of the first surface (41C) and the hypotenuse (31b, 31c) of the second surface (41D) are brought into contact with each other. ,
Next, spot welding is applied to the tip portions of the first surface (41C) and the second surface (41D), and the first surface (41C) and the second surface (41D) are fixed, and thus the third surface (41A) ) And the fourth surface (41B) are the elevation surface (32), and the first surface (41C) and the second surface (41D) are the bottom surface (31).

以下に本発明を図面に基づき説明する。本発明に係る製造方法で製造したラッシング金具３０を図１及び図２に示す。当該ラッシング金具３０は底面３１と、底面３１に形成した直角の角隅部を区画する２辺３１ａから直角に折れ曲がって立設した立面３２から構成され、両立面３２の上部に取っ手穴３３が形成されている。また、底面３１と立面３２に複数個の釘穴３４が形成されている。   The present invention will be described below with reference to the drawings. The lashing metal fitting 30 manufactured with the manufacturing method concerning this invention is shown in FIG.1 and FIG.2. The lashing metal fitting 30 is composed of a bottom surface 31 and an upright surface 32 that is bent upright from two sides 31 a that define a right-angled corner formed on the bottom surface 31, and a handle hole 33 is formed above the compatible surface 32. Is formed. A plurality of nail holes 34 are formed in the bottom surface 31 and the vertical surface 32.

本実施形態に係るラッシング金具３０の打ち抜き品４１の板取り図を図３に示す。この打ち抜き品４１は互いに直交する第１折り曲げ線４１ｅと第２折り曲げ線４１ｇによって区画される第１面４１Ｃ、第２面４１Ｄ、第３面４１Ａ及び第４面４１Ｂからなる。そして、第３面４１Ａと第４面４１Ｂは互いに第１折り曲げ線４１ｅに関して略線対称となる形状を有する。また、第１面４１Ｃと第２面４１Ｄはそれぞれ第２折り曲げ線４１ｇを一辺とするとともに互いに第１折り曲げ線４１ｅの延長線に関して略線対称となり、かつ対向する斜辺３１ｂ，３１ｃによって直角の切欠部４１ｆが形成される略三角形状を有する。
また、面４１Ａと面４１Ｂには取っ手穴３３が形成されている。また、各面には複数個の釘穴３４が形成されている。 A plan view of the punched product 41 of the lashing fitting 30 according to the present embodiment is shown in FIG. The punched product 41 includes a first surface 41C, a second surface 41D, a third surface 41A, and a fourth surface 41B defined by a first fold line 41e and a second fold line 41g that are orthogonal to each other. The third surface 41A and the fourth surface 41B have a shape that is substantially line symmetric with respect to the first bending line 41e. Further, the first surface 41C and the second surface 41D each have a second fold line 41g as one side and are substantially line symmetric with respect to an extension line of the first fold line 41e, and are perpendicular to each other by the oblique sides 31b and 31c facing each other. 41f is formed in a substantially triangular shape.
Moreover, the handle hole 33 is formed in the surface 41A and the surface 41B. A plurality of nail holes 34 are formed on each surface.

図４に打ち抜き品４１をプレス機で曲げ加工してラッシング金具３０に成形する工程を示す。打ち抜き品４１の面４１Ｃと面４１Ｄをそれぞれ面４１Ａと面４１Ｂに対し直角となるように折り曲げる。次ぎに面４１Ｂを面４１Ａに対して直角に折り曲げ、面４１Ｃの斜辺３１ｂと面４１Ｄの斜辺３１ｃを当接させる。そうして、面４１Ｃと面４１Ｄの先端部にスポット溶接３５を施して、面４１Ｃと面４１Ｄを固着しする。
かかる一連の曲げ加工により、面４１Ａと面４１Ｂが立面３２に、面４１Ｃと面４１Ｄが合わさって底面３１に成形される。 FIG. 4 shows a process in which the punched product 41 is bent by a press machine and formed into the lashing fitting 30. The surfaces 41C and 41D of the punched product 41 are bent so as to be perpendicular to the surfaces 41A and 41B, respectively. Next, the surface 41B is bent at a right angle to the surface 41A, and the oblique side 31b of the surface 41C and the oblique side 31c of the surface 41D are brought into contact with each other. Then, spot welding 35 is applied to the tip portions of the surfaces 41C and 41D, and the surfaces 41C and 41D are fixed.
By such a series of bending processes, the surface 41A and the surface 41B are formed into the upright surface 32 , and the surface 41C and the surface 41D are combined into the bottom surface 31.

図５にラッシング金具３０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。   FIG. 5 shows an example of how to use the lashing fitting 30. 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 that 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.

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。It is the perspective view seen from the front which shows the lashing metal fitting manufactured with the manufacturing method concerning the present invention. 同ラッシング金具を示す背面から見た斜視図である。It is the perspective view seen from the back which shows the lashing metal fitting. 同ラッシング金具の打ち抜き品の板取り図である。It is a plan drawing of the punching product of the lashing metal fitting. 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。It is explanatory drawing which shows the process of bending and forming the lashing metal fitting from a punching product. 同ラッシング金具の使用方法を示す説明図である。It is explanatory drawing which shows the usage method of the same lashing metal fitting.

符号の説明Explanation of symbols

１０，３０，５０…ラッシング金具、３１…底面、３２…立面、３４…釘穴、３３…取っ手穴。   10, 30, 50 ... Lashing metal fittings, 31 ... bottom, 32 ... elevation, 34 ... nail hole, 33 ... handle hole.

Claims (1)

底面（３１）に直角の隅部を有し、該隅部を区画する２辺（３１ａ）のそれぞれからほぼ直角に立設した立面（３２）を備え、底面（３１）に釘穴（３４）を貫通して設け、立面（３２）に取っ手穴（３３）を貫通して設けた鉄板製のラッシング金具（３０）の製造方法であって、
互いに直交する第１折り曲げ線（４１ｅ）と第２折り曲げ線（４１ｇ）によって区画される第１面（４１Ｃ）、第２面（４１Ｄ）、第３面（４１Ａ）及び第４面（４１Ｂ）から成り、
第３面（４１Ａ）と第４面（４１Ｂ）は互いに第１折り曲げ線（４１ｅ）に関して略線対称となる形状を有し、
第１面（４１Ｃ）と第２面（４１Ｄ）はそれぞれ前記第２折り曲げ線（４１ｇ）を一辺とするとともに互いに前記第１折り曲げ線（４１ｅ）の延長線に関して略線対称となり、かつ対向する斜辺（３１ｂ，３１ｃ）によって直角の切欠部（４１ｆ）が形成される略三角形状を有する打ち抜き品（４１）を打ち抜き加工する第１工程と、
打ち抜き品（４１）の第１面（４１Ｃ）と第２面（４１Ｄ）をそれぞれ第３面（４１Ａ）と第４面（４１Ｂ）に対し直角となるように折り曲げる第２工程と、
第４面（４１Ｂ）を第３面（４１Ａ）に対して直角に折り曲げ、もって第１面（４１Ｃ）の斜辺と第２面（４１Ｄ）の斜辺（３１ｂ，３１ｃ）を当接させる第３工程と、
第１面（４１Ｃ）と第２面（４１Ｄ）の先端部にスポット溶接を施して、第１面（４１Ｃ）と第２面（４１Ｄ）を固着し、もって、第３面（４１Ａ）と第４面（４１Ｂ）を前記立面（３２）に、第１面（４１Ｃ）と第２面（４１Ｄ）を底面（３１）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。 The bottom surface (31) has a right-angled corner, and has an upright surface ( 32) erected substantially perpendicularly from each of the two sides (31a) defining the corner , and the bottom surface (31) has a nail hole (34 ) , And a method of manufacturing a lashing metal fitting (30) made of iron plate provided with a handle hole (33) penetrating the elevation (32) ,
From the first surface (41C), the second surface (41D), the third surface (41A), and the fourth surface (41B) defined by the first fold line (41e) and the second fold line (41g) that are orthogonal to each other. Consisting of
The third surface (41A) and the fourth surface (41B) have a shape that is substantially line-symmetric with respect to the first fold line (41e).
Each of the first surface (41C) and the second surface (41D) has the second fold line (41g) as one side and is substantially line symmetric with respect to the extension line of the first fold line (41e), and opposite oblique sides A first step of punching a punched article (41) having a substantially triangular shape in which a right-angled notch (41f) is formed by (31b, 31c) ;
A second step of bending so that perpendicular to the first surface of the punched member (41) (41C) and the third surface the second surface of the (41D), respectively (41A) and the fourth surface (41B),
A third step of bending the fourth surface (41B) at a right angle with respect to the third surface (41A) and bringing the oblique side of the first surface (41C) into contact with the oblique side (31b, 31c) of the second surface (41D). When,
Spot welding is applied to the front end portions of the first surface (41C) and the second surface (41D), and the first surface (41C) and the second surface (41D) are fixed, so that the third surface (41A) and the second surface (41A) 4. A method of manufacturing a lashing metal fitting, comprising a fourth step of forming four surfaces (41B) as the elevation surface (32) and forming the first surface (41C) and the second surface (41D) as a bottom surface (31).
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