JP2016013810A - Fender and manufacturing method of fender - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fender and a manufacturing method of the fender capable of reducing an operation burden.SOLUTION: A fender 100 has a fender main body 102 on an inner part of an outer package bag body 103 which is penetrated by a core line 101. The core line 101 has such an extent of ruggedness that liquid urethane resin raw material can come thereinto on the surface and is constituted with a rope extended in a long size. The outer package bag body 103 comprises an inner bag body 104 constituted with resin sheet material, an outer cylinder body 106 and an outer band body 107. The inner bag body 104 stores urethane resin raw material, forms a fender main body 102 and is a bag-shaped component with which the fender main body 102 made of cured hard urethane foam is covered and protected. The fender main body 102 is formed in such a shape as to be extended in a rod shape along an inner shape of the outer package bag body 103 in such a state that urethane resin raw material is poured into the outer package bag body 103 in which the core line 101 is arranged and, thereby, is adhered respectively to the outer package bag body 103 and the core line 101.

Description

  The present invention relates to a fender that is attached to a berth or a quay to protect a hull, and a method for manufacturing the fender.

  Conventionally, there are fenders that are attached to the berth or quay to protect the hull and prevent damage. For example, Patent Document 1 below discloses a fender having a retaining ring extending from both ends of a bag made of woven fabric or knitted fabric and filled with a foam in which foamed resin particles are fused and integrated in the bag. Has been.

Japanese Patent Publication No. 03-65256

  However, in the fender described in the above-mentioned patent document 1, in order to prevent the retaining ring from coming off from the bag body, two retaining rings are manufactured and the two retaining rings are connected to both ends of the rope to form two There is a problem that a work of making a knot is necessary, and the work load in the manufacturing process is large. Moreover, in the conventional fender, when the rope slides in the axial direction of the rope with respect to the bag body or the foam, a friction prevention process is required to suppress deterioration due to the friction of the rope, There was a problem that the work load increased.

  The present invention has been made to address the above-described problems, and an object thereof is to provide a fender and a method for manufacturing the fender that can reduce the work load.

  In order to achieve the above-mentioned object, the present invention is characterized by the fact that the liquid urethane resin raw material can enter the core and has an irregular surface on the surface and extending in a long shape, and a bag-like shape containing a part of the core wire. There exists an exterior bag body and the fender main body which consists of a hard urethane foam which filled the liquid urethane resin raw material into the exterior bag body, and was solidified.

  According to the characteristics of the present invention configured as described above, the fender is a hard urethane solidified by filling a liquid urethane resin raw material in a state in which a part of the core wire having irregularities on the surface is arranged in the exterior bag body. Since the fender main body made of foam is provided, the core wire and the fender main body are fixed along the axial direction of the core wire by the self-adhesive force of the urethane resin, so that the core wire is prevented from shifting or coming off from the fender main body. That is, in the fender according to the present invention, it is possible to obtain a fender that prevents the core wire from shifting or coming off by simply filling the liquid urethane resin raw material into the exterior bag body in which a part of the core wire is arranged. The work burden of the fender can be significantly reduced.

  The rigid urethane foam refers to a polyisocyanate having two or more NCO (isocyanate) groups and a polyol having two or more OH (hydroxyl) groups, a catalyst (for example, an amine compound), a foaming agent (for example, Obtained by mixing foaming reaction and resinification reaction at the same time by mixing with water stabilizer, etc. (for example, silicone oil) (hereinafter referred to as “hard urethane material”). It is a homogeneous plastic foam. Moreover, it is preferable that the rigid urethane foam in this invention is comprised by the closed cell of foaming magnification 10 times-35 times, more preferably 15 times-25 times. Therefore, the rigid urethane foam in the present invention may include semi-rigid urethane.

  Another feature of the present invention resides in that in the fender, the core wire is formed of a rope.

  According to another feature of the present invention thus configured, the fender has a core wire made of a rope (a combination of elongated fibers or strands), so that liquid urethane resin can enter. A core wire having strength that can withstand use as a fender while having unevenness as much as possible can be easily prepared.

  Another feature of the present invention is that, in the boat, in the fender, the exterior bag body is formed of a resin sheet.

  According to another feature of the present invention configured as described above, the fender is composed of a resin sheet for the outer bag body, and therefore, compared to a woven fabric or a knitted fabric constituting a conventional bag body, It is highly durable against rubbing against the quay and hull and can extend the product life, and can prevent deterioration and weight increase of the exterior bag body and fender body due to infiltration of water (for example, seawater) into the exterior bag body. .

  Another feature of the present invention resides in that, in the fender, the exterior bag body is configured by a plurality of sheet bodies being stacked.

  According to another feature of the present invention configured as described above, the fender is configured by stacking a plurality of sheet bodies on the exterior bag body, thereby improving durability against rubbing against a quay or a hull. Product life can be extended. In the case of conventional fenders, the bag is made of woven fabric or knitted fabric to supply steam to the foamed resin particles, and the fabric cannot be stacked, and it is resistant to rubbing against the quay or hull. However, there was a problem that the product life was short.

  Another feature of the present invention is that, in the fender, the outer bag includes an inner bag formed with shoulders that gradually reduce the outer shape of both ends of the core wire, and the inner bag. The present invention consists of a cylindrical outer cylindrical body that is formed to extend between shoulders on the outer side of the body.

  According to another feature of the present invention configured as described above, the fender is arranged on the outer side of the inner bag body in which the outer bag body is formed so that the outer shapes on both ends of the core wire are gradually reduced. It is comprised with the made cylindrical outer cylinder. As a result, the fender is simply filled with a liquid urethane resin raw material in the inner bag body with the outer cylinder body arranged outside the inner bag body, and is cured by the expansion of the inner bag body. It can be hung on the shoulder and fixed to the inner bag.

  Further, the present invention can be implemented not only as an invention of a fender, but also as an invention of a method for manufacturing a fender.

  Specifically, in the method for manufacturing a fender, a part of a core wire that has an unevenness on the surface that allows liquid urethane resin to enter and extends long is inserted into a bag-shaped exterior bag body. What is necessary is just to make it include the core wire arrangement | positioning process and the fender main body shaping | molding process which shape | molds the fender main body which consists of a hard urethane foam by filling a liquid urethane resin in the exterior bag body and making it solidify. According to this, the same effect as the said fender can be expected.

It is a partially broken front view which shows typically the outline of the external appearance structure and internal structure of the fender which concerns on one Embodiment of this invention. It is the flowchart which showed the process of the manufacturing method of the fender which concerns on this invention. It is front sectional drawing which shows typically the state which assembled | attached the core wire and the outer side cylinder to the inner side bag body in the fender shown in FIG.

  Hereinafter, an embodiment of a fender according to the present invention and a method for producing the fender will be described with reference to the drawings. FIG. 1 is a partially broken front view schematically showing an outline of an external configuration and an internal configuration of a fender 100 according to the present invention. FIG. 2 is a flowchart showing the steps of the method for manufacturing the fender according to the present invention. FIG. 3 is a front sectional view schematically showing a state in which the core wire and the outer cylindrical body are assembled to the inner bag body in the fender 100 shown in FIG. Note that the drawings referred to in this specification are schematically shown by exaggerating some of the components in order to facilitate understanding of the present invention. For this reason, the dimension, ratio, etc. between each component may differ. The fender 100 is an instrument that is attached to a hull or quay to prevent and protect the hull from damage.

(Configuration of fender 100)
The fender 100 includes a core wire 101. The core wire 101 is a string-like component for attaching the fender 100 to a hull (not shown) or a quay (not shown), and is configured to extend long. The surface of the core wire 101 is configured to have unevenness enough to allow the liquid urethane resin raw material to enter. More specifically, the core wire 101 is composed of a rope obtained by combining elongated fibers or strands. In this case, as the core wire 101, a so-called spun ester rope made of a polyester resin material or a so-called Cremona rope obtained by mixing a polyester resin material and a vinylon resin material can be used. That is, the core wire 101 has surface irregularities formed by twisting of fibers and strands constituting the rope. The core wire 101 is provided through the fender body 102.

  The fender body 102 is a cushioning material that is disposed between the hull and the hull or between the hull and the quay to prevent damage to the hull, and is made of a hard urethane foam. Here, the rigid urethane foam is a urethane resin raw material, specifically, a polyisocyanate having two or more NCO (isocyanate) groups and a polyol having two or more OH (hydroxyl) groups as a catalyst (for example, an amine). Compound), foaming agent (for example, water, fluorocarbon, etc.), foam stabilizer (for example, silicone oil), etc. Is the body. Moreover, it is preferable that the rigid urethane foam in this invention is comprised by the closed cell of foaming magnification 10 times-35 times, more preferably 15 times-25 times. Therefore, the rigid urethane foam in the present invention may include semi-rigid urethane.

  The fender body 102 is formed by injecting a urethane resin material into an exterior bag body 103 in which a part of the core wire 101 is disposed, so that the fender body 102 is fixed to the exterior bag body 103 and the core wire 101 respectively. It is formed in a shape extending in a rod shape along the shape. In the present embodiment, the fender main body 102 is formed in a long bowl shape in which a curved shoulder portion 102a that extends in a rod shape in the axial direction of the core wire 101 and whose outer shape gradually decreases at both ends is formed. Yes.

  The exterior bag body 103 is a component for covering and protecting the fender body 102 and is made of a sheet material made of polyvinyl chloride resin (PVC). The exterior bag body 103 is mainly composed of an inner bag body 104, an outer cylinder body 106, and an outer band body 107. Among these, the inner bag body 104 is a component that contains the urethane resin raw material to form the fender body 102 and covers and protects the fender body 102 made of a hard urethane foam, which is a polyvinyl chloride resin (PVC). ) Made of sheet material in a bag shape.

  More specifically, the inner bag body 104 is formed in a long saddle shape having a curved shoulder portion 104a that extends in a cylindrical shape and gradually decreases in outer shape at both ends thereof. In addition, core wire holes 104b for allowing the core wire 101 to penetrate in the longitudinal direction of the inner bag body 104 are formed at both ends of the inner bag body 104, and urethane injection is provided at one of the both ends. An inlet 104c is formed.

  The core wire hole 104 b is a through-hole for allowing the core wire 101 to penetrate in the longitudinal direction of the inner bag body 104, and is formed at each central portion of both end portions of the inner bag body 104. A sleeve 105 is fitted in each of the core hole 104b. The sleeve 105 is a component for protecting each core wire hole 104b, and is formed by forming a resin material into a cylindrical shape having an outer diameter that fits the core wire hole 104b and an inner diameter through which the core wire 101 can pass. In this case, the sleeve 105 is set to have an inner diameter such that the liquid urethane resin raw material does not leak between the sleeve 105 and the core wire 101, but an elastic body (not shown) such as cloth or soft urethane resin between the sleeve 105. Can be prevented from leaking the liquid urethane resin raw material and rubbing the core wire 101.

  The urethane inlet 104c is a through hole for injecting a urethane resin raw material into the inner bag body 104 and venting air from the inner bag body 104 when the urethane resin raw material is injected. In the present embodiment, four are provided at one end of both end portions of the inner bag body 104. Each of these urethane inlets 104c is closed with a lid 104d made of the same resin sheet material as the inner bag body 104, which is bonded and fixed.

  The outer cylinder body 106 is a part that is disposed outside the inner bag body 104 and protects the inner bag body 104 and the fender body 102, and the same resin sheet material as the inner bag body 104 is formed in a cylindrical shape. Configured. In this case, the outer cylindrical body 106 is formed in a cylindrical shape having a length that hangs on the two shoulder portions 104 a of the inner bag body 104. In the present embodiment, the outer cylindrical body 106 is formed in such a length that the urethane inlet 104c is exposed while hanging on the two shoulder portions 104a of the inner bag 104, respectively. That is, the outer cylindrical body 106 is formed with curved shoulder portions 106a whose outer shapes are gradually reduced at both ends.

  The outer band body 107 is a part that is partially disposed outside the outer cylinder body 106 to protect the outer cylinder body 106, the inner bag body 104, and the fender body 102, and is made of the same resin as the inner bag body 104. The sheet material is formed into a cylindrical shape. The outer band body 107 is provided in a state of being wound around the outer cylindrical body 106 at both ends and the center of the fender body 102.

(Manufacture of fender 100)
Next, the manufacturing process of the fender 100 will be described with reference to FIG. As shown in FIG. 3, the worker who manufactures the fender 100 first manufactures the outer bag 103 as the first step. Specifically, the operator prepares the inner bag body 104, the outer cylinder body 106, and the outer band body 107, respectively. In this case, the inner bag 104 is formed in a bag shape that joins planar sheet materials in a separate process and extends in a rod shape, and sleeves 105 are respectively attached to the two core wire holes 104b. Moreover, the urethane inlet 104c in the inner side bag body 101 is the open state.

On the other hand, the outer cylindrical body 106 is formed into a bag shape extending in a rod shape by joining planar sheet materials in a separate process, and three outer band bodies 107 are attached to the outer peripheral surface thereof by an adhesive (not shown). Formed. In this case, the three outer band bodies 107 are
Affixed to both end portions and the center portion of the outer cylindrical body 106, respectively. Then, the operator places the outer cylinder body 106 outside the inner bag body 104 through the inner bag body 104 in the cylinder of the outer cylinder body 106. As a result, the outer cylindrical body 106 including the outer band body 107 is disposed outside the inner bag body 104, and the outer bag body 103 is obtained. In FIG. 3, the inner bag 104 is in a deflated state before injecting the urethane resin raw material, but is shown in an expanded state (inflated state) for easy understanding.

  Next, an operator arrange | positions a part of core wire 101 in the exterior bag body 103 as a 2nd process. Specifically, the operator prepares the core wire 101. In this case, the core wire 101 is prepared with a length that penetrates the inner bag body 104 and a length that is required as a specification of the fender 100. Then, the operator passes the core wire 101 through the inner bag body 104 by passing the core wire 101 through the sleeve 105 through the two core wire holes 104 b in the inner bag body 104. As a result, part of the core wire 101 is disposed in the outer bag 103. That is, the step of arranging the core wire 101 in the inner bag body 104 corresponds to the core material arranging step according to the present invention.

  Next, an operator inject | pours a urethane resin raw material in the inner side bag body 104 as a 3rd process, and shape | molds the fender main body 102. FIG. Specifically, the operator injects a liquid urethane resin material into the inner bag body 104 using a urethane injection device (not shown). In this case, the urethane injecting device injects the liquid urethane resin material from three or less of the four urethane inlets 104c in the inner bag body 104 to the inner side from the remaining urethane inlet 104c. The air in the bag body 104 is allowed to escape. In FIG. 3, the injection of urethane resin material into the inner bag body 104 and the discharge of air from the inner bag body 104 are indicated by broken line arrows.

  The urethane resin raw material injected into the inner bag body 104 is filled while pushing the inner bag body 104 from the inner side and starts to cure immediately. In this case, since the urethane resin raw material has self-adhesiveness when it is cured, it is cured while adhering an object that contacts the urethane resin raw material. That is, the urethane resin raw material injected into the inner bag body 104 is cured while fixing the core wire 101 and the inner bag body 104 to form the fender body 102.

  In this case, the core wire 101 is more firmly fixed to the fender body 102 because the surface is formed with irregularities by twisting to the extent that liquid urethane resin raw material can enter. In this embodiment, since the core wire 101 is constituted by a rope, the liquid urethane resin raw material enters between the fibers constituting the rope and between the strands, and the fixing force with the fender body 102 is enhanced. Is done.

  Further, the urethane resin raw material injected into the inner bag body 104 becomes a hard urethane foam that is foamed and cured into a size and shape corresponding to the size and shape of the inner region of the inner bag body 104, and the fender body 102. Configure. In the present embodiment, the worker forms the fender body 102 by foaming the urethane resin material 20 times. The step of forming the fender body 102 in the third step corresponds to the fender body forming step.

  Next, the worker closes the urethane inlet 104c with the lid 104d. Specifically, after preparing the lid 104d, the operator attaches the lid 104d onto the urethane inlet 104c in the inner bag body 104 using an adhesive (not shown) to close the urethane inlet 104c.

  Thereby, the outer bag body 103 is provided in the outer peripheral part of the fender main body 102, and the fender 100 is completed. In the present embodiment, the outer bag 103 is manufactured in the first step. However, in the first step, the outer cylindrical body 106 to which the outer band body 107 is not attached may only be disposed outside the inner bag body 104. Then, after forming the fender body 102 in the third step, the worker can also be configured to affix the outer band body 107 to the outer peripheral portion of the outer cylindrical body 106 as the fourth step.

(Operation of fender 100)
Next, the operation of the fender 100 configured as described above will be described. A user who uses the fender 100 prepares the fender 100 and installs it on the hull or quay. Specifically, the user attaches to a hull or quay (not shown) using both or one of the core wires 101 extending from both ends of the inner bag body 104. The fender 100 is interposed between the hull and the hull or between the hull and the quay and functions as a cushioning material to prevent damage to the hull.

  In this case, since the fender main body 102 is firmly fixed to the core wire 101, the fender 100 is prevented from being displaced or removed from the core wire 101 during use, that is, from the installation position of the fender main body 102. In addition, since the fender 100 is hung on the two shoulders 104a of the inner bag body 104 at both ends of the outer cylinder body 106, the outer cylinder body 106 is prevented from being displaced from the inner bag body 104 during use. Is done. Also, the fender body 100 is provided with outer band bodies 107 at locations where the fender body 102 is relatively susceptible to rubbing, specifically, at an upper end portion, a central portion, and a lower end portion of the fender body 102 in use. Therefore, damage to the fender body 102 can be more effectively suppressed, and when the outer band body 107 is damaged, it can be easily replaced with a new outer band body 107. In addition, when the inner bag body 104 and the outer cylinder body 105 constituting the outer bag body 103 are also torn, they can be repaired by applying a sheet material of the same quality.

  As can be understood from the above description of operation, according to the above embodiment, the fender 100 is made of a liquid urethane resin raw material in a state in which a part of the core wire 101 having irregularities on the surface is arranged in the outer bag 103. Since the fender main body 102 made of the hard urethane foam filled and solidified is provided, the core wire 101 and the fender main body 102 are fixed along the axial direction of the core wire 101 by the self-adhesive force of the urethane resin. Is prevented from slipping out or coming off from the fender body 102. In other words, in the fender 100 according to the present invention, a fender that prevents the core wire 101 from being displaced or pulled out simply by filling the outer bag 103 in which a part of the core wire 101 is disposed with a liquid urethane resin raw material. 100 can be obtained, and the work burden of the fender 100 can be significantly reduced.

  Furthermore, in carrying out the present invention, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the object of the present invention.

  For example, in the said embodiment, the fender 100 was comprised in the shape extended in round bar shape. However, the shape and size of the fender 100 are appropriately determined according to the specifications of the fender 100. Therefore, the fender 100 can be formed into a shape other than a round bar, for example, a spherical shape, a jum shape or a barrel shape.

  Moreover, in the said embodiment, the fender 100 comprised the core wire 101 with the rope. However, the core wire 101 only needs to be formed with unevenness enough to allow the liquid urethane resin raw material to enter the whole or a part of the surface, that is, at least a part. Therefore, the core wire 101 can also be formed by intentionally forming a convex protrusion on the knot or on the surface. In particular, it is effective to provide a knot-like knot on the core wire 101 because the fixing force is increased.

  Moreover, in the said embodiment, the fender 100 was comprised so that the core wire 101 might penetrate the fender main body 102. FIG. However, the fender 100 need only have a portion of the core wire 101 disposed in the inner bag 104. Therefore, the fender 100 can be provided and configured such that the core wire 101 does not penetrate the fender body 102 and extends only from one of both end portions of the fender body 102.

  Moreover, in the said embodiment, the fender 100 comprised the exterior bag body 103 by the inner side bag body 104, the outer side cylinder body 105, and the outer side band body 107. FIG. However, the outer bag 103 may be configured by at least the inner bag 104. Moreover, the exterior bag body 103 can be configured by stacking two or more outer cylindrical bodies 105.

  Moreover, in the said embodiment, the fender 100 comprised the exterior bag body 103 with the resin sheet material. However, the exterior bag body 103 can also be configured using a cloth material instead of or in addition to the resin sheet material.

100 ... fenders,
DESCRIPTION OF SYMBOLS 101 ... Core wire, 102 ... Fender main body, 102a ... Shoulder part, 103 ... Exterior bag body, 104 ... Inner bag body, 104a ... Shoulder part, 104b ... Core wire hole, 104c ... Urethane inlet, 104d ... Cover, 105 ... Sleeve, 106: outer cylinder body, 106a: shoulder, 107 ... outer band body.

Claims (6)

A core wire that has an unevenness on the surface that allows the liquid urethane resin raw material to enter, and extends in a long length;
A bag-shaped exterior bag body containing a part of the core wire;
A fender having a fender body made of a hard urethane foam filled with the liquid urethane resin material and solidified in the exterior bag body. In the fender according to claim 1,
The said core wire is comprised with the rope, The fender characterized by the above-mentioned. In the fender as claimed in claim 1 or claim 2,
The exterior bag body is
A fender made of a resin sheet. In the fender as described in any one of Claims 1 thru | or 3,
The exterior bag body is
A fender having a plurality of sheet members stacked together. In the fender according to claim 4,
The exterior bag body is
An inner bag formed with shoulders that gradually reduce the outer shape of both ends of the core wire;
A fender having a cylindrical outer cylinder formed to extend between the shoulders on the outer side of the inner bag. A core wire arrangement step of inserting a part of the core wire extending in a long shape having irregularities on the surface capable of entering a liquid urethane resin into a bag-shaped exterior bag body;
A fender body manufacturing method comprising: forming a fender body formed of a hard urethane foam by filling the outer bag body with the liquid urethane resin and solidifying the liquid urethane resin.

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