KR102240677B1 - Refrigerator vans flooring and its manufacturing method - Google Patents

Abstract

The present invention relates to a panel structure of a cargo box in a refrigeration truck, which prevents damage and deformation and stably bears the load of cargoes by laminating a first composite layer and a second composite layer between first and second steel sheet sheets constituting the inner and outer surfaces to have a lattice structure in different layers, and to a manufacturing method thereof.

Description

Panel structure of refrigeration truck loading box and its manufacturing method {Refrigerator vans flooring and its manufacturing method}

The present invention prevents damage and deformation and stabilizes the load of the load by laminating the first composite layer and the second composite layer to have a lattice structure in different layers between the first and second steel sheet forming the inner and outer surfaces. It relates to a panel structure and a manufacturing method of the refrigeration tower vehicle loading box that can be endured with the same.

In general, trucks are boxed so that the loads do not fall and the loads are protected from snow or rain.

In the loading box of the tower vehicle, a panel is installed on the bottom of the loading box to transport the load, which is to prevent a problem that the vehicle is damaged from the load.

Conventionally, the bottom panel of the truck's loading box has been made of wood, but the strength is weak and it is damaged because it is only the level of connecting the wooden panels, and the wooden panel has a problem of being damaged by rot by water. There is a problem in that the user feels a cost burden due to frequent replacement.

Accordingly, various technologies have been developed to construct the panel structure of the truck loading box, but there is a continuing need for a panel structure of the loading box that is easier to withstand the load of the load and is more stable from damage and deformation.

As related to the panel structure of the tower vehicle as described above, Korean Patent Laid-Open Publication No. 10-2018-0062287 discloses a method of manufacturing a loading bottom portion for a commercial vehicle, which is formed in a plate shape and includes a body portion extending in the longitudinal direction of the loading box; A coupling groove part forming a groove on one side of the body part in the width direction; And a coupling protrusion protruding to the other side in the width direction of the body portion.

However, since the conventional loading floor for commercial vehicles depended only on the coupling of the coupling grooves and the coupling protrusions for the connection structure between each panel, there was a problem that the panels were split due to the opening of the gap, and eventually, damage or deformation due to the load of the load was caused. There was a problem that occurred.

Accordingly, there is a growing need for a panel structure of a refrigerated truck loading box that can withstand the load of the load more easily and prevent damage and deformation of the structure.

Republic of Korea Patent Laid-Open Publication No. 10-2018-0062287 (published on Aug. 08, 2018), "Method of manufacturing the loading floor for commercial vehicles"

In order to solve the above problems, the present invention provides a first composite layer and a second stiffener and a second reinforcing member and a second reinforcing member alternately disposed between the first and second sheet steel sheets forming the inner and outer surfaces. Provides a panel structure and a manufacturing method for the refrigeration truck loading box that prevents damage and deformation and stably withstands the load of the load by stacking the second composite layers alternately arranged with insulating materials to have a lattice structure in different layers. There is a purpose to do it.

In addition, in the present invention, the first and second reinforcing materials are made of synthetic resin material, and the first and second heat insulators are made of styrofoam material, so that the overall weight is reduced, as well as the refrigeration truck loading box that can prevent damage from rotting by water. It is an object to provide a panel structure and a method for manufacturing the same.

In order to solve the above problems, the present invention comprises a first composite layer, a second reinforcing material, and a second insulation material in which the first and second steel sheet sheets forming the inner and outer surfaces, the first reinforcing material, and the first insulation material are alternately arranged. It includes a second composite layer alternately arranged, wherein the first and second composite layers are stacked so as to have a lattice structure in different layers.

In addition, a first reinforcing sheet is disposed between the first steel sheet and the first composite layer, and a second reinforcing sheet is disposed between the second steel sheet and the second composite layer.

In addition, it is characterized in that the non-woven fabric is attached to the first and second reinforcing sheets by a hot-melt thermocompression method.

In addition, the present invention is a first sheet steel sheet placement step (S10) of cutting and placing the first sheet steel sheet; Attaching the first reinforcement material to be spaced apart from each other on the top of the first steel sheet arranged in the first steel sheet arranging step (S10), and inserting and attaching the first insulation material in the space between the first reinforcement members to form a first composite layer Forming a first composite layer to form (S20); A second stiffener is attached to an upper portion of the first composite layer formed in the first composite layer forming step (S20) at a right angle with the first stiffener to cross each other and spaced apart from each other, and a second insulating material is attached to the space between the second stiffeners. A second composite layer forming step (S30) of inserting and attaching to form a second composite layer, and attaching a second steel sheet to an upper portion of the second composite layer formed in the second composite layer forming step (S30). It provides a method for manufacturing a panel structure of a refrigerator truck loading box, characterized in that it comprises a steel sheet attaching step (S40).

In addition, the first composite layer forming step (S20) includes a first stiffener attaching step (S22) of attaching a plurality of first stiffeners to be spaced apart from each other; A first insulation material cutting step (S24) of cutting the first insulation material so that the first stiffener attached in the first stiffener attachment step (S22) corresponds to the spaced distance; Including a first insulating material inserting and attaching step (S26) of inserting and attaching the first insulating material to a space spaced apart from each other of the first stiffener attached in the first stiffener attaching step (S22), and the second composite layer forming step (S30) ) Is a second stiffener attaching step (S32) of attaching a plurality of second stiffeners to cross each other at a right angle while being spaced apart from each other; A second insulation material cutting step (S34) of cutting the second insulation material so that the second reinforcement material attached in the first reinforcement attachment step (S32) corresponds to the spaced distance; It characterized in that it comprises a second heat insulating material inserting and attaching step (S36) of inserting and attaching the second insulating material to the spaced apart from each other of the second stiffener attached in the second stiffener attaching step (S32).

In addition, a first reinforcing sheet attaching step (S15) of attaching the first reinforcing sheet to one surface of the first steel sheet is further performed between the step of arranging the first sheet steel sheet (S10) and the step of forming the first composite layer (S20). Including, between the step of forming the second composite layer (S30) and the step of attaching the second sheet steel sheet (S40), a second reinforcing sheet attaching step (S35) of attaching a second reinforcing sheet to one side of the second composite layer is performed. It characterized in that it further includes.

In addition, after performing the second steel sheet attaching step (S40), it characterized in that it further comprises a bond aging step (S50) of aging the bond for 12 to 24 hours.

The panel structure of the refrigeration truck loading box according to the present invention includes a first composite layer and a second reinforcing member and a second reinforcing member arranged alternately between the first and second steel sheet sheets forming the inner and outer surfaces. By laminating the second composite layers alternately arranged with the heat insulator to have a lattice structure in different layers, it is possible to prevent damage and deformation and stably withstand the load of the load.

In addition, the panel structure of the refrigeration truck loading box according to the present invention is made of synthetic resin material for the first and second reinforcing materials, and the first and second heat insulators are made of styrofoam material, so that the overall weight is reduced, as well as being damaged by rotting by water. There is an effect that can prevent it.

1 is a flow chart showing the manufacturing process of the panel structure of the refrigerating tower vehicle loading box according to an embodiment of the present invention.
Figure 2 is a perspective view of the panel structure of the refrigerator truck loading box according to an embodiment of the present invention.
Figure 3 is an exploded perspective view of the panel structure of the refrigeration truck loading box according to an embodiment of the present invention.
4 to 11 are exemplary views showing a manufacturing process of a refrigeration truck loading box according to an embodiment of the present invention.

The following detailed descriptions of the present invention are embodiments in which the present invention may be practiced and refer to the accompanying drawings, which are illustrated as examples of the embodiments. These embodiments will be described in detail enough for those skilled in the art to practice the present invention. It should be understood that the various embodiments of the present invention are different from each other, but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the present invention in relation to one embodiment. In addition, it should be understood that the location or arrangement of individual components in each described embodiment may be changed without departing from the spirit and scope of the present invention.

Accordingly, the detailed description to be described below is not intended to be taken in a limiting sense, and the scope of the present invention is limited only by the appended claims, along with all scopes equivalent to those claimed by the claims, if appropriately described. Like reference numerals in the drawings refer to the same or similar functions over several aspects.

Terms used in the present invention have selected general terms that are currently widely used as possible while taking functions of the present invention into consideration, but this may vary according to the intention or precedent of a technician working in the field, the emergence of new technologies, and the like. In addition, in certain cases, there are terms arbitrarily selected by the applicant, and in this case, the meaning of the terms will be described in detail in the description of the corresponding invention. Therefore, the terms used in the present invention should be defined based on the meaning of the term and the overall contents of the present invention, not a simple name of the term.

In the present invention, when a part "includes" a certain component, it means that other components may be further included rather than excluding other components unless otherwise stated.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the panel structure of the refrigerator truck loading box according to the present invention.

2 is a perspective view of a panel structure of a refrigeration truck loading box according to an embodiment of the present invention, and FIG. 3 is an exploded perspective view of the panel structure of a refrigeration truck loading box according to an embodiment of the present invention.

The present invention, as shown in Figures 2 to 3, is located between the first and second steel sheet (10, 40) forming the inner and outer surface, and the first and second steel sheet (10, 40) It is located between the first composite layer 20 and the first and second steel sheet sheets 10 and 40 in which the first reinforcing material 22 and the first insulating material 24 are alternately arranged, and the second reinforcing material 32 and the material A refrigeration tower vehicle, characterized in that it includes a second composite layer (30) in which two insulating materials (34) are alternately arranged, wherein the first and second composite layers (20, 30) are stacked to have a lattice structure in different layers. Provides the panel structure of the loading box.

The first sheet steel 10 is suitably referred to as a plate made of metal. It will be preferable that the first steel sheet 10 is more appropriately a color steel sheet. The color steel sheet removes impurities on the surface of the steel sheet with hydrochloric acid or sulfuric acid, applies pressure while passing between the rolls and rolls to adjust to the desired thickness, and then plated aluminum and zinc through heat treatment and coated with a special paint for a smooth natural texture. Refers to what gave.

The area and shape of the first steel sheet 10 are not limited, but it is preferable that the panel is manufactured to fit the size of the refrigerating truck on which the panel is to be mounted, and a rectangular shape is preferable.

The thickness of the first steel sheet 10 is preferably 0.1 to 1.0t, most preferably 0.5t.

A first reinforcing sheet 15 may be attached to one surface of the first steel sheet 10. In other words, the first reinforcing sheet 15 is attached between the first steel sheet 10 and the first composite layer 20.

The first reinforcing sheet 15 serves to supplement the strength of the first and second composite layers 20 and 30 that do not have sufficient strength.

The first reinforcing sheet 15 may be formed by attaching a plurality of sheets 15', 15",… to the first steel sheet 10, respectively.

At this time, it is appropriate that the plurality of sheets 15', 15", ... are attached horizontally to about 2 to 10 rows.

The first reinforcing sheet 15 may be attached to both surfaces of the nonwoven fabric by a hot-melt thermocompression method. It is difficult to attach an adhesive to the first reinforcing sheet 15 formed of a synthetic resin material, but when the non-woven fabric is attached to the first reinforcing sheet 15 by a hot-melt thermocompression method, the adhesive can be applied to the non-woven fabric, and the first reinforcing sheet (15) and the first sheet steel sheet 10 can be bonded to each other.

The first reinforcing sheet 15 may be made of a synthetic resin material. As the first reinforcing sheet 15 is made of a synthetic resin material instead of wood, the overall weight is reduced, as well as it may be prevented from being damaged by rotting by water.

The second steel sheet 40 suitably refers to a plate made of metal. It will be preferable that the second steel sheet 40 is more appropriately a SUS bent plate. The SUS bending plate is a plate made of SUS (steel use stainless), that is, a stainless steel material, and refers to a plate that is bent in a certain shape.

It is preferable that the width and shape of the second steel sheet 40 are manufactured to correspond to the first sheet steel 10.

The thickness of the second steel sheet 40 is preferably 0.1 to 3.0t, most preferably 2.0t.

It is preferable that the second steel sheet 40 is arranged to be parallel to the first sheet steel 10.

A second reinforcing sheet 45 may be attached to one surface of the second steel sheet 40. In other words, the second reinforcing sheet 45 is attached between the second steel sheet 40 and the second composite layer 30.

The second reinforcing sheet 45 serves to supplement the strength of the first and second composite layers 20 and 30 that do not have sufficient strength.

The second reinforcing sheet 45 may be formed by attaching a plurality of sheets 45 ′, 45 ″,… respectively to the second steel sheet 60.

At this time, it is appropriate that the plurality of sheets 45', 45", ... are attached to about 2 to 10 lines.

The second reinforcing sheet 45 may be attached to both surfaces of the nonwoven fabric by a hot-melt thermocompression method. It is difficult to attach an adhesive to the second reinforcing sheet 45 formed of a synthetic resin material, but when the non-woven fabric is attached to the second reinforcing sheet 45 by a hot-melt thermocompression method, the adhesive can be applied to the non-woven fabric, and the second reinforcing sheet The adhesion between 45 and the second sheet steel 40 is possible.

The second reinforcing sheet 45 may be made of a synthetic resin material. As the second reinforcing sheet 45 is made of a synthetic resin material instead of wood, the overall weight may be reduced, and it may be prevented from being damaged by rotting by water.

In the first composite layer 20, the first reinforcing material 22 and the first insulating material 24 are alternately disposed. The first composite layer 20 is positioned between the first and second sheet steel sheets 10 and 40, and is formed on the first sheet sheet 10 in more detail.

The first stiffener 22 is a plurality (22', 22", ...), and are spaced apart from each other and arranged side by side while being in parallel.

It is appropriate that the first stiffener 22 has a long rod shape.

It is appropriate that the length of the first stiffener 22 corresponds to a distance in the width direction or a distance in the length direction of the first sheet steel sheet 10. In the embodiment of the present invention, an example was given that the length of the first stiffener 22 corresponds to the distance in the length direction of the first steel sheet 10, but the length of the first stiffener 22 is the first steel sheet 10 It does not matter if it corresponds to the distance in the width direction of ). However, when the length of the first stiffener 22 corresponds to the distance in the width direction of the first steel sheet 10, the length of the second stiffener 32 should correspond to the distance in the length direction.

The first reinforcing material 22 may be formed of a synthetic resin material having pores therein, thereby reducing the weight of the entire panel.

The material of the first reinforcing material 22 is preferably a synthetic resin such as PE, LDPE, HDPE, PVC, PP, PBT, POM, ABS, PS, PMMA, SAN, PC, melamine, epoxy, silicone unsaturated polyester, etc. will be. As the first stiffener 22 is formed of a synthetic resin material, the overall weight of the panel structure of the freezing truck loading box according to the present invention is reduced, and free from the problem of being damaged by water, which is a problem that occurred in the panel structure made of wood. It can be lowered.

The first insulating material 24 is disposed on the same layer as the first stiffener 22, and is disposed in a space between the first stiffeners 22 ′, 22 ″, ….

Therefore, it will be appropriate that the width of the first insulating material 24 corresponds to the distance between the first reinforcing members 22 ′, 22 ″,… spaced apart from each other.

It is appropriate that the first insulating material 24 is made of a styrofoam material. As the first insulating material 24 is formed of a styrofoam material, the overall weight of the panel structure of the freezing truck loading box according to the present invention is reduced, and from the problem of being damaged by water, which is a problem that occurred in the panel structure made of wood. You can be free.

In the second composite layer 30, the second reinforcing material 32 and the second insulating material 34 are alternately disposed. The second composite layer 30 is stacked on a layer different from the first composite layer 20 to have a lattice structure. In other words, the second reinforcing member 32 of the second composite layer 30 crosses the first reinforcing member 22 at a right angle, and the second insulating member 34 of the second composite layer 30 is the first insulating member ( It crosses at a right angle to 24). The second composite layer 30 may be positioned between the first and second steel sheet sheets 10 and 40 and may be formed on the first composite layer 20 in more detail.

That is, the first and second reinforcing members 22 and 32 are cross-laminated and the first. 2 Insulation members 24 and 34 are inserted to have a lattice structure, thereby preventing damage and deformation and stably withstanding the load of the load, as well as increasing the thermal insulation effect.

The second stiffener 32 is a plurality (32', 32", ...), and are spaced apart from each other and arranged side by side while being in parallel.

The second stiffener 32 is disposed on a different layer from the first stiffener 22 and is disposed to cross the first stiffener 22 at a right angle. Accordingly, the first stiffener 22 and the second stiffener 32 are arranged to form a grid with each other.

It is appropriate that the second stiffener 32 has a long rod shape.

It is appropriate that the length of the second stiffener 32 corresponds to a distance in the width direction or a distance in the length direction of the first sheet steel sheet 10. In the embodiment of the present invention, an example was given that the length of the second stiffener 32 corresponds to the distance in the length direction of the first steel sheet 10, but the length of the second stiffener 32 is the first steel sheet 10 It does not matter if it corresponds to the distance in the width direction of ). However, when the length of the second stiffener 32 corresponds to the distance in the width direction of the first steel sheet 10, the length of the first stiffener 22 should correspond to the distance in the length direction.

The second stiffener 32 may be formed of a synthetic resin material having pores therein, thereby reducing the weight of the entire panel.

The material of the second reinforcing material 32 is preferably a synthetic resin such as PE, LDPE, HDPE, PVC, PP, PBT, POM, ABS, PS, PMMA, SAN, PC, melamine, epoxy, silicone unsaturated polyester, etc. will be. As the second reinforcing material 32 is formed of a synthetic resin material, the overall weight of the panel structure of the freezing truck loading box according to the present invention is reduced, and free from the problem of being damaged by water, which is a problem that occurred in the panel structure made of wood. It can be lowered.

The second insulating material 34 is disposed on the same layer as the second stiffener 32, and is disposed in a space between the first stiffeners 32', 32", ...).

Therefore, it will be appropriate that the width of the second insulating material 34 corresponds to the distance between the second stiffeners 32 ′, 32 ″,… spaced apart from each other.

It is appropriate that the second insulating material 34 is made of a styrofoam material. As the second insulating material 34 is formed of a styrofoam material, the overall weight of the panel structure of the freezing truck loading box according to the present invention is reduced, and from the problem of being damaged by water, which is a problem that occurred in the panel structure made of wood. You can be free.

The first steel sheet 10, the first reinforcing sheet 15, the first composite layer 20, the second composite layer 30, the second reinforcing sheet 45 and the second steel sheet 40 are It can be attached and fixed with an adhesive, thereby completing a single panel structure.

Hereinafter, with reference to the accompanying drawings, a method for manufacturing a panel structure of a refrigerating truck loading box according to the present invention will be described.

4 to 11 are exemplary views showing a manufacturing process of a refrigerating truck loading box according to an embodiment of the present invention.

A method for manufacturing a panel structure of a refrigerating truck loading box according to the present invention comprises: a first sheet steel sheet placing step (S10) of cutting and arranging the first sheet steel sheet 10; Attaching the first reinforcing material 22 to be spaced apart from each other on the top of the first steel sheet 10 disposed in the first steel sheet arranging step (S10), and a first insulation material ( Inserting and attaching 24) to form a first composite layer 20 (S20); A second reinforcing member 32 is attached to the upper portion of the first composite layer 20 formed in the step of forming the first composite layer (S20) while crossing the first reinforcing member 22 at a right angle and spaced apart from each other, and the second A second composite layer forming step (S30) of forming a second composite layer 30 by inserting and attaching the second insulating material 34 in the space between the reinforcing members 32 (S30), and the second composite layer forming step (S30) And a second sheet steel sheet attaching step (S40) of attaching the second sheet steel sheet 40 to the upper portion of the second composite layer 30 formed in FIG.

The first sheet steel sheet disposing step (S10) is a step of cutting and arranging the first sheet steel sheet 10, as shown in FIG. 4.

In the first steel sheet arranging step (S10), the first steel sheet 10 may be manufactured by cutting a plate made of metal, and more preferably, it will be appropriate to manufacture a color steel sheet. In addition, it is appropriate to manufacture the first steel sheet 10 using a material having a thickness of 0.1 to 1.0t, and most preferably, it will be preferable to manufacture using a material having a thickness of 0.5t.

In the first sheet steel sheet disposing step (S10), the first sheet steel sheet 10 is cut to correspond to the size and shape of the loading box of the refrigerating truck. It would be desirable to manufacture the first sheet steel 10 in an appropriately rectangular shape.

When the cutting of the first steel sheet 10 is completed in the step S10 of arranging the first sheet steel sheet, the preparation is completed by placing the first sheet steel sheet 10 on the worktable.

After completing the step of placing the first steel sheet (S10), and as shown in FIG. 5, the step of attaching the first reinforcing sheet 15 to one side of the first steel sheet 10 ( S15) can be performed.

In the first reinforcing sheet attaching step (S15), the first reinforcing sheet 15 may be formed by gathering a plurality of sheets 15', 15", .... In this case, a plurality of sheets 15', 15" , …) should be attached horizontally in 2 to 10 rows.

In the first reinforcing sheet attaching step (S15), the first reinforcing sheet 15 may be attached to both surfaces of the non-woven fabric by a hot-melt thermocompression method. It is difficult to attach an adhesive to the first reinforcing sheet 15 formed of a synthetic resin material, but when the non-woven fabric is attached to the first reinforcing sheet 15 by a hot-melt thermocompression method, the adhesive can be applied to the non-woven fabric, and the first reinforcing sheet (15) and the first sheet steel sheet 10 can be bonded to each other.

In the step of attaching the first reinforcing sheet (S15), the first reinforcing sheet 15 may be made of a synthetic resin material. As the first reinforcing sheet 15 is made of a synthetic resin material instead of wood, the overall weight is reduced, as well as it may be prevented from being damaged by rotting by water.

Next, as shown in FIGS. 6 to 7, a first stiffener 22 is attached to the upper portion of the first steel sheet 10 disposed in the first sheet steel sheet placing step (S10) to be spaced apart from each other, and the The first composite layer forming step (S20) of forming the first composite layer 20 by inserting and attaching the first insulating material 24 into the space between the first reinforcing members 22 is performed.

In the forming of the first composite layer (S20), the first composite layer 20 is alternately arranged with the first reinforcing material 22 and the first insulating material 24 alternately. It is preferable to manufacture the first composite layer 20 to be formed on the first steel sheet 10. That is, the first composite layer 20 is attached to the top of the first steel sheet 10 or the first reinforcing sheet 15.

In the first composite layer forming step (S20), the first stiffener 22 is first attached to each other, and the first insulating material 24 is cut so that the first stiffener 22 corresponds to the spaced distance, and then the first stiffener. (22) Insert and attach to the space between.

In summary, the first composite layer forming step (S20) includes a first stiffener attaching step (S22) of attaching a plurality of first stiffeners 22 to be spaced apart from each other by a predetermined distance; A first insulation material cutting step (S24) of cutting the first insulation material 24 so that the first stiffener 22 attached in the first stiffener attachment step (S22) corresponds to the spaced distance; It can be said that it includes a first insulation material insertion and attachment step (S26) of inserting and attaching the first insulation material 24 into a space spaced apart from each other of the first stiffener 20 attached in the first stiffener attachment step (S22). .

Next, as shown in FIGS. 8 to 9, a second stiffener 32 is placed on the first composite layer 20 formed in the first composite layer forming step (S20) with the first stiffener 22. A second composite layer forming step of forming a second composite layer 30 by intersecting at a right angle and attaching to be spaced apart from each other, and inserting and attaching the second insulating material 34 in the space between the second reinforcing members 32 ( S30) is performed.

In the second composite layer forming step (S30), the second composite layer 30 is alternately disposed with the second stiffener 32 and the first insulating material 34 alternately. The second composite layer 30 is stacked on a layer different from the first composite layer 20 to have a lattice structure. In other words, the second reinforcing member 32 of the second composite layer 30 crosses the first reinforcing member 10 at a right angle, and the second insulating member 34 of the second composite layer 30 is the first insulating member ( 24) at right angles and crosses.

In the second composite layer forming step (S30), the second stiffener 32 is attached so as to cross each other at a right angle with the first stiffener 22 while being spaced apart from each other, and the second stiffener 32 corresponds to the spaced distance. After cutting the insulating material 34, it is inserted and attached to the space between the second stiffeners 32.

In summary, the second composite layer forming step (S30) includes a second reinforcing member attaching step (S32) of attaching a plurality of second stiffeners 32 to cross each other at a right angle while being spaced apart from each other by a predetermined distance (S32); A second insulation material cutting step (S34) of cutting the second insulation material 34 so that the second stiffener 32 attached in the first stiffener attachment step (S32) corresponds to the spaced distance; It can be said that it includes a second insulation material insertion and attachment step (S36) of inserting and attaching the second insulation material 34 into a space spaced apart from each other of the second reinforcement material 32 attached in the second reinforcement attachment step (S32). .

After completing the second composite layer forming step (S30), as shown in FIG. 10, a second reinforcing sheet attaching step of attaching a second reinforcing sheet 45 to one surface of the second composite layer 30 ( S35) can be performed.

In the second reinforcing sheet attaching step (S35), the second reinforcing sheet 45 may be formed by gathering a plurality of sheets 45', 45", .... In this case, a plurality of sheets 45', 45" , …) should be attached horizontally in 2 to 10 rows.

In the second reinforcing sheet attaching step (S35), the second reinforcing sheet 45 may be attached to both sides of the nonwoven fabric by a hot-melt thermocompression bonding method. It is difficult to attach an adhesive to the second reinforcing sheet 45 formed of a synthetic resin material, but when the non-woven fabric is attached to the second reinforcing sheet 45 by a hot-melt thermocompression method, the adhesive can be applied to the non-woven fabric, and the second reinforcing sheet It becomes possible to bond 45 and the second sheet steel 40 to each other.

In the second reinforcing sheet attaching step (S35), the second reinforcing sheet 45 may be made of a synthetic resin material. As the second reinforcing sheet 45 is made of a synthetic resin material instead of wood, the overall weight is reduced, as well as it may be prevented from being damaged by rotting by water.

Next, as shown in FIG. 11, the top of the second composite layer 30 formed in the second composite layer forming step (S30) or the second reinforcing sheet attached in the second reinforcing sheet attaching step (S35). A second sheet steel sheet attaching step (S40) of attaching the second sheet steel sheet 40 to the upper portion is performed.

In the second steel sheet attaching step (S40), the second steel sheet 40 may be manufactured by appropriately cutting a plate made of metal, and more appropriately, it is preferable to manufacture it using a SUS bent plate. will be.

In the second steel sheet attaching step (S40), the width and shape of the second sheet steel sheet 40 are cut to correspond to the first sheet steel sheet 10. It would be desirable to manufacture the second steel sheet 40 in an appropriately rectangular shape.

In the second sheet steel sheet attaching step (S40), the second sheet steel sheet 40 is preferably attached so as to be parallel to the first sheet steel sheet 10.

When the attachment of the second steel sheet 40 is completed in the second steel sheet attaching step (S40), a bond aging step (S50) of aging the bond for 12 to 24 hours may be further performed.

When the bond maturation is completed in the bond maturation step (S50), the first steel sheet 10, the first reinforcing sheet 15, the first composite layer 20, the second composite layer 30, and the second reinforcement The sheet 45 and the second steel sheet 40 are firmly fixed to form a single panel structure, and this may be applied to a loading box of a refrigerator truck.

Although the present invention has been described with the accompanying drawings, this is only one of various embodiments including the gist of the present invention, and is intended to be easily implemented by those of ordinary skill in the art. As for the purpose, it is clear that the present invention is not limited to the above-described embodiments. Therefore, the scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto by changes, substitutions, substitutions, etc. within the scope not departing from the gist of the present invention are subject to the rights of the present invention. Will be included. In addition, it is clarified that some of the configurations in the drawings are provided in an exaggerated or reduced form than in actuality, as for describing the configuration more clearly.

10: first steel sheet 15: first reinforcement sheet
20: first stiffener 30: first insulating material
40: second reinforcing material 50: second insulating material
60: second steel sheet 65: second reinforcement sheet

Claims (7)

delete delete delete A first sheet steel sheet disposing step (S10) of cutting and arranging the first sheet steel sheet;
Attaching the first reinforcing material to be spaced apart from each other on the top of the first steel sheet arranged in the first steel sheet arranging step (S10), and inserting and attaching the first insulating material in the space between the first reinforcing materials to form a first composite layer. Forming a first composite layer to form (S20);
A second stiffener is attached to an upper portion of the first composite layer formed in the first composite layer forming step (S20) at a right angle with the first stiffener to cross each other and spaced apart from each other, and a second insulating material is attached to the space between the second stiffeners. Inserting and attaching to form a second composite layer forming a second composite layer (S30), and,
A method for manufacturing a panel structure for a refrigerator truck loading box, comprising attaching a second steel sheet to an upper portion of the second composite layer formed in the second composite layer forming step (S30) (S40). .
The method of claim 4,
The first composite layer forming step (S20) includes a first stiffener attaching step (S22) of attaching a plurality of first stiffeners to be spaced apart from each other; A first insulation material cutting step (S24) of cutting the first insulation material so that the first stiffener attached in the first stiffener attachment step (S22) corresponds to the spaced distance; Including a first insulation material inserting and attaching step (S26) of inserting and attaching the first insulation material to a space spaced apart from each other of the first stiffener attached in the first stiffener attachment step (S22),
The step of forming the second composite layer (S30) includes a second stiffener attaching step (S32) of attaching a plurality of second stiffeners to cross each other at a right angle while being spaced apart from each other; A second insulation material cutting step (S34) of cutting the second insulation material so that the second reinforcement material attached in the first reinforcement attachment step (S32) corresponds to the spaced distance; The panel structure of a refrigeration truck loading box, characterized in that it includes a second insulation material insertion and attachment step (S36) of inserting and attaching the second insulation material into spaces spaced apart from each other of the second stiffener attached in the second stiffener attachment step (S32). Manufacturing method.
The method of claim 4,
The first reinforcing sheet attaching step (S15) of attaching the first reinforcing sheet to one surface of the first steel sheet is further included between the step of arranging the first sheet steel sheet (S10) and the step of forming the first composite layer (S20), ,
Further comprising a second reinforcing sheet attaching step (S35) of attaching a second reinforcing sheet to one surface of the second composite layer between the second composite layer forming step (S30) and the second steel sheet attaching step (S40). A method for manufacturing a panel structure of a refrigerating tower vehicle loading box, characterized in that.
The method of claim 4,
After performing the second steel sheet attaching step (S40), the method further comprises a bond aging step (S50) of aging the bond for 12 to 24 hours.

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