Flexible kitchen knife with excellent wear resistance, and manufacturing method

Abstract

The present invention relates to a kitchen knife and, more specifically, to a flexible kitchen knife with excellent wear resistance, and a manufacturing method, the kitchen knife being made of a flexible material with excellent wear resistance so as to be lightweight and convenient to use, and having excellent wear resistance and convenience of use, such as being resistant to food sticking, through fluorine coating and PVD coating. The present invention comprises: (S10) a flexible knife raw material processing step of using a raw sheet cutting device (11) and a knife-shaped pressing device (12) to cut a flexible knife raw steel plate into a knife-sized flexible knife to be processed (112); (S20) a flexible knife surface processing step of processing, with a polishing device, the side surface of the knife to be processed (112); (S40) a flexible knife blade processing step of using a blade grinder (21) to grind a blade portion of the knife to be processed (112); (S60) a knife handle providing step of forming a kitchen knife (1) by coupling a handle (2) to the knife to be processed (112); and (S90) a knife post-processing step of washing and packaging the processed knife, and further comprises (S30) a flexible knife dot-coating step of forming a fluorine coating layer on the surface of the knife to be processed (112).

Description

Flexible kitchen knife with excellent wear resistance and its manufacturing method

[0001] The present invention relates to a kitchen knife, and more particularly, to a kitchen knife made of a flexible material with excellent wear resistance, which is lightweight and convenient to use, and which is also convenient to use, such as having excellent wear resistance and preventing food from sticking to it through fluorine coating and PVD coating, and a method for manufacturing the same.

[0002] Generally, kitchen knives are used for cooking food, and are used to cut various ingredients such as vegetables, fruits, and meat.

[0003] Most kitchen knives used these days are made primarily of stainless steel or steel, and are becoming thicker and larger to enable them to cut hard materials.

[0004] In recent years, blades have been serrated to enhance functionality, enabling them to cut through bone. Furthermore, various patterns are added to the sides of the blades to enhance their design.

[0005] However, existing knives have become larger and thicker for the purpose of cutting various ingredients, so they have the disadvantage of being uncomfortable to use due to strain on the hands and wrists when used multiple times.

[0006] Also, rather than focusing on writing food well, there are some inconveniences such as making it too big or heavy.

[0007] [Prior Art Literature]

[0008] [Patent Document]

[0009] (Patent Document 1) Patent Registration No. 10-1779236 (announced on September 18, 2017)

[0010] (Patent Document 2) Patent Registration No. 10-1891107 (announced on September 28, 2018)

[0011] (Patent Document 3) Utility Model Registration No. 20-0439709 (announced on May 2, 2008)

[0012] (Patent Document 4) Patent Registration No. 10-2209656 (announced on January 29, 2021)

[0013] (Patent Document 5) Patent Registration No. 10-1105237 (announced on January 16, 2012)

[0014] (Patent Document 6) Patent Registration No. 10-0298598 (announced on November 22, 2001)

[0015] (Patent Document 7) Patent Registration No. 10-0627187 (announced on September 25, 2006)

[0016] (Patent Document 8) Patent Registration No. 10-2372814 (announced on March 10, 2022)

[0017] The present invention, which aims to solve the above problems, has the purpose of performing PVD coating on kitchen knives to provide corrosion resistance and wear resistance, thereby enabling them to be used hygienically without damage to the kitchen knives even during long-term use.

[0018] Another object of the present invention is to provide a kitchen knife made of a flexible material that can be bent to the side, so that the knife is thin, light, and strong, and does not cause strain to the hand or wrist even when used for a long time.

[0019] In addition, another object of the present invention is to provide convenience of use by performing blade polishing using a separate method after performing PVD coating on the blade, thereby using the polished blade.

[0020] In addition, another object of the present invention is to provide a hygienic kitchen knife by improving the durability of the kitchen knife by performing a fluorine coating on the side surface of the kitchen knife and pursuing wear resistance by the fluorine coating layer.

[0021] Furthermore, another object of the present invention is to provide an advantage of convenience in use because thinly sliced ​​food does not stick to the kitchen knife because the side of the kitchen knife is formed with a fluorine coating layer and a PVD coating layer.

[0022] In order to achieve the above-described purpose, the present invention comprises a flexible knife raw material processing step (S10) of cutting a flexible knife raw material sheet into a flexible knife (112) having a knife size by using a fabric cutting device (11) and a knife-shaped pressing device (12); a flexible knife surface processing step (S20) of processing a side surface of the knife (112) to be processed by a grinding device; a flexible knife blade processing step (S40) of grinding a blade portion of the knife (112) to be processed by using a blade grinder (21); a knife handle installation step (S60) of forming a kitchen knife (1) by combining a handle (2) with the knife (112) to be processed; The present invention provides a method for manufacturing a flexible kitchen knife with excellent wear resistance, characterized by including a post-processing step (S90) of washing and packaging the processed knife, and further including a flexible knife dot coating step (S30) of forming a fluorine coating layer on the surface of the knife to be processed (112).

[0023] In a preferred embodiment of the present invention, the knife raw material processing step (S10) includes a fabric cutting step (S11) of cutting a cutting knife material (111) from a flat flexible knife raw material plate by a fabric cutting device (11); a knife-shaped pressing step (S12) of cutting the cutting knife material (111) into a knife-shaped target knife (112) by a knife-shaped pressing device (12); and a flexible knife raw material post-processing processing step (S13) of post-processing the target knife (112), wherein the flexible knife raw material processing step (S13) includes a flexible knife raw material heat treatment step (S131) ​​of heat-treating the cut target knife (112) at high temperature by a heat treatment device (13); a knife raw material cooling step (S132) of cooling the target knife (112) at high temperature by a cooling device (14); A method for manufacturing a flexible kitchen knife with excellent wear resistance is provided, characterized by including a raw material hardness measurement step (S133) of measuring the hardness of a knife to be processed (112) with a hardness measuring device (15); and a raw material surface inspection step (S134) of inspecting the surface condition of a knife to be processed (112) with a surface inspection magnifier (16).

[0024] In a preferred embodiment of the present invention, the flexible knife surface processing step (S20) includes: a diamond rolling step (S21) of polishing the side surface of the knife to be processed (112) using a diamond polishing roll device (17); a primary polishing roller surface step (S22) of polishing the surface of the knife to be processed (112) that has been polished using a primary polishing roller device (18); and a secondary polishing roller surface step (S23) of polishing the surface of the knife to be processed (112) using a secondary polishing roller device (19) having a finer roller surface than that of the primary polishing roller device (18). And it includes a post-polishing cleaning step (S24) of cleaning the target knife (112) with a post-polishing cleaning device (20) after polishing and polishing, and the blade processing step (S40) includes a blade polishing step (S41) of polishing the blade (402) of the target knife (112) to be processed using a blade grinder (21) to form a blade; and a blade burr removing step (S42) of removing burrs formed at the tip of the blade (402) by the blade polishing using a blade burr removing device (22), and the knife handle providing step (S60) includes a handle-on-sandpaper polishing step (S61) of polishing the upper side of the handle (2) coupled to the target knife (112) to be processed, which becomes a kitchen knife (1), using a sandpaper polishing device (41); A method for manufacturing a kitchen knife (1) comprises: a handle-under-sanding step (S62) of sanding the lower side of a handle (2) coupled to a kitchen knife (1) with a sandpaper sanding device (41); a handle-over-fine-polishing step (S63) of sanding the upper side of a handle (2) coupled to a kitchen knife (1) with a handle-fine-polishing device (42); and a handle-under-fine-polishing step (S64) of sanding the lower side of a handle (2) coupled to a kitchen knife (1) with a handle-fine-polishing device (42), wherein the knife post-processing step (S90) comprises: a post-washing step (S91) of washing the kitchen knife (1) with a post-washing device (91); a laser marking step (S92) of marking the blade surface (401) of the kitchen knife (1) with a laser marking device (92); The present invention provides a method for manufacturing a flexible kitchen knife with excellent wear resistance, characterized by including a packaging step (S93) of packaging a kitchen knife (1).

[0025] In a preferred embodiment of the present invention, the flexible knife dot coating step (S30) includes a surface preparation step (S31) of removing residues on the side surface of the knife to be processed (112) and removing impurities through sanding; a primer fluorine-titanium coating step (S32) of coating a primer coating agent on the surface of the knife to be processed (112) through firing; and a dot ball fluorine-titanium coating step (S33) of coating a dot ball coating agent on the surface of the knife to be processed (112) coated with the primer coating agent through firing, wherein the primer coating agent includes 100% by weight of a fluororesin and 1 to 2% by weight of titanium, and the dot ball coating agent includes 100% by weight of a fluororesin and 1 to 5% by weight of titanium. The present invention provides a method for manufacturing a flexible kitchen knife having excellent wear resistance.

[0026] In a preferred embodiment of the present invention, the primer fluorine-titanium coating step (S32) includes a primer spraying step (S321) of spraying a primer coating agent onto the side surface of a processing target knife (112) with a primer spraying device (511); a primer furnace heating step (S322) of heating and firing the processing target knife (112) to which the primer coating agent has been applied in a primer firing furnace (512); and a primer drying step (S323) of drying and cooling the heated processing target knife (112), and the dot ball fluorine-titanium coating step (S33) includes a dot ball spraying step (S331) of spraying a dot ball coating agent onto the side surface of the processing target knife (112) on which the primer coating agent has been coated to form a primer coating layer (501) with a dot ball spraying device (521) A method for manufacturing a flexible kitchen knife with excellent wear resistance is provided, characterized by including a dot ball heating step (S332) of heating and firing a processing target knife (112) to which a dot ball coating agent has been applied in a dot ball firing furnace (522); and a dot ball drying step (S333) of drying and cooling the heated processing target knife (112).

[0027] In a preferred embodiment of the present invention, the flexible knife dot coating step (S30) further includes a top fluorine coating step (S34) of coating a top coating agent including a fluororesin on the surface of a processing target knife (112) coated with a dot ball coating agent through firing, and the top fluorine coating step (S34) includes a top coating spraying step (S341) of spraying a top coating agent on the side surface of the processing target knife (112) on which a primer coating layer (501) and a dot ball coating layer (502) are formed using a top coating spraying device (531); a top coating furnace heating step (S342) of heating and firing the processing target knife (112) on which the top coating agent is applied in a top coating furnace (532); and a top coating drying step (S343) of drying and cooling the heated processing target knife (112).

[0028] In a preferred embodiment of the present invention, a method for manufacturing a flexible kitchen knife with excellent wear resistance is provided, which comprises a flexible knife PVD coating step (S50) of forming a PVD coating layer (8) on the knife to be processed (112) through a PVD coating process after processing the blade portion of the knife to be processed (112); a coating blade processing step (S70) of removing a clumped coating portion from among the thickly coated coating layer (8) on the blade (402) portion while the entire knife to be processed (112) is coated; and a coated blade-leather removal step (S80) of removing a coating burr caused by the coating on the blade (402) portion of the kitchen knife (1) using a coating blade leather removal device (46).

[0029] In a preferred embodiment of the present invention, the flexible knife PVD coating step (S50) provides a method for manufacturing a flexible kitchen knife with excellent wear resistance, characterized in that it includes a coating receiving step (S51) of receiving a processed knife (112) to be processed into a coating work position; a pre-coating inspection step (S52) of inspecting the surface condition of the processed knife (112) prior to coating; a pre-coating treatment step (S53) including a process of washing the processed knife (112) using a pre-coating washing device; a coating step (S54) of performing a coating process on the processed knife (112); and a post-coating inspection step (S55) of inspecting the coated processed knife (112).

[0030] In a preferred embodiment of the present invention, the coating pre-treatment step (S53) includes a coating pre-washing step (S531) of washing a processing target knife (112) with a coating pre-washing device; and a coating pre-treatment inspection step (S532) of visually inspecting the washed processing target knife (112) and then inspecting it with a microscope, and the coating step (S54) includes a coating heating step (S541) of heating the processing target knife (112) as a coating target with a coating heating device (25); a coating performing step (S542) of forming a PVD coating layer (8) on the processing target knife (112) using a PVD coating coating device (26); A post-coating cooling step (S543) for cooling a processing target knife (112) that has gone through a coating process with a post-coating cooling device is included, and the coating material of the PVD coating layer (8) includes any one of TiN, TiCN, CrN, TiAlN, AlTiN, ZrN, and TiC, and the post-coating inspection step (S55) comprises a post-coating inspection step (S551) that includes a visual inspection and a microscopic inspection of the coated processing target knife (112); a coating hardness measurement step (S552) for measuring the hardness of the coating layer with a hardness measurement device for the coated processing target knife (112); a coating film thickness measurement step (S553) for measuring the film thickness of the coating layer with a film thickness measurement device for the coated processing target knife (112); The present invention provides a method for manufacturing a flexible kitchen knife with excellent wear resistance, characterized by including a coating adhesion measurement step (S554) of measuring the adhesion of a coating layer with an adhesion measurement device for a coated processing target knife (112).

[0031] In a preferred embodiment of the present invention, the method for manufacturing a flexible kitchen knife with excellent wear resistance is provided, characterized in that the coating blade processing step (S70) includes a coating blade surface-leather polishing step (S71) of polishing the coating layer of the blade surface (401) of the side of the body (4) of the kitchen knife (1) with a coating blade leather polishing device (45) for the coated kitchen knife (1); and a coating blade-leather polishing step (S72) of polishing the coating layer of the blade (402) of the kitchen knife (1) with a coating blade leather polishing device (45) for the coated kitchen knife (1).

[0032] In a preferred embodiment of the present invention, a wear-resistant flexible kitchen knife manufacturing system is provided, characterized by including a fabric cutting device (11) for cutting a blade fabric forming a blade plate; a blade-shaped pressing device (12) for cutting a cut cutting blade material (111) into a blade shape; a heat treatment device (13) for heat-treating a cut blade (112) to be processed; a cooling device (14) for cooling the heat-treated blade (112) to be processed; a diamond polishing roll device (17) for polishing the blade (112); a grinding roller polishing device (18, 19) for polishing the blade (112) to be processed; a blade polishing machine (21) for polishing a blade portion of the blade (112) to be processed; a blade burr removing device (22) for removing burrs from the blade portion; and a sandpaper polishing device (41) for polishing a handle (2) fastened to the blade (112) to be processed.

[0033] In a preferred embodiment of the present invention, a wear-resistant flexible kitchen knife manufacturing system is provided, characterized by including a coating heating device (25) for heating a knife to be processed (112); a coating device (26) for coating the surface of the heated knife to be processed (112) to form a PVD coating layer (8); a post-coating cooling device for cooling the knife to be processed (112); a hardness measuring device for measuring the hardness of a coated kitchen knife (1); a film thickness device for measuring the thickness of a coating film of the kitchen knife (1); an adhesion measuring device for measuring the adhesion of the coating film of the kitchen knife (1); a coating blade leather polishing device (45) for polishing the coating layer of the blade portion of the kitchen knife (1); and a coating blade leather burr removing device (46) for removing burrs attached to the blade portion of the kitchen knife (1).

[0034] In a preferred embodiment of the present invention, a device for applying a primer coating to a side surface of a knife (112) to be processed, comprising: a primer spraying device (511) for spraying a primer coating agent onto the side surface of a knife (112) to be processed for manufacturing a kitchen knife (1); a primer firing furnace (512) for heating and firing the knife (112) to be processed to which the primer coating agent has been applied; and a primer drying device (513) for drying and cooling the heated knife (112), and a device for applying a dot ball coating to the side surface of the knife (112) to be processed while the primer coating agent has been applied, comprising: a dot spraying device (521) for spraying a dot ball coating agent onto the surface of the knife (112) to be processed on which the primer coating agent has been applied so that a primer coating layer (501) has been formed; a dot firing furnace (522) for heating and firing the knife (112) to which the dot ball coating agent has been applied; And a dot drying device (523) for drying and cooling a heated processing target knife (112), and a device for applying a top coating on a side surface of a processing target knife (112) in a dot ball coating state, the device comprises: a top coating spraying device (531) for spraying a top coating agent on the side surface of a processing target knife (112) on which a primer coating layer (501) and a dot ball coating layer (502) are formed; a top coating firing furnace (532) for heating and firing the processing target knife (112) to which the top coating agent is applied; and a top coating drying device (533) for drying and cooling the heated processing target knife (112).

[0035] In a preferred embodiment of the present invention, a fluorine coating layer (5) composed of a primer coating layer (501), a dot ball coating layer (502), and a top coating layer (503) is formed on the side surface of a polished kitchen knife (1), a PVD coating layer is formed as an upper layer on the outer surface of the fluorine coating layer (5), and the kitchen knife (1) is made of a material that bends laterally, thereby providing a flexible kitchen knife with excellent wear resistance.

[0036] In a preferred embodiment of the present invention, the fluorine coating layer (5) is formed by firing a primer coating layer (501) formed by firing a primer coating agent, a dot ball coating layer (502) formed by firing a dot ball coating agent on top of the primer coating layer (501), and a top coating layer (503) formed by firing a top coating agent on top of the dot ball coating layer (502), wherein the primer coating layer (501) is formed by firing a primer coating agent containing 100 weight ratios of fluororesin and 1 to 2 weight ratios of titanium, the dot ball coating layer (502) is formed by firing a dot ball coating agent containing 100 weight ratios of fluororesin and 1 to 5 weight ratios of titanium, and the top coating layer (503) is formed by firing a top coating agent containing fluororesin, thereby providing a flexible kitchen knife having excellent wear resistance.

[0037] In a preferred embodiment of the present invention, the flexible knife (1) is characterized in that it forms a fluorine coating layer (5) on both sides centered on the blade body (4), forms a PVD coating layer (8) as an outer layer of the fluorine coating layer (5), forms a primer coating layer (501) that directly contacts both sides of the blade body (4), forms a dot ball coating layer (502) on which irregular protrusions are formed as an outer surface of the primer coating layer (501), and forms a top coating layer (503) as an outer layer of the dot ball coating layer (502).

[0038] The present invention, configured as described above, has the effect of enabling hygienic use of kitchen knives without damage to the kitchen knives even during long-term use by performing PVD coating for corrosion resistance and wear resistance.

[0039] Another effect of the present invention is that, when providing a kitchen knife, it is made of a flexible material that can be bent to the side of the knife, so that it is thin, light, and strong, and does not cause strain to the hand or wrist even when used for a long time.

[0040] In addition, another effect of the present invention is to provide convenience of use by using a sharpened blade by performing sharpening of the blade by a separate method after performing PVD coating.

[0041] In addition, another effect of the present invention is to provide a hygienic kitchen knife by improving the durability of the kitchen knife by performing a fluorine coating on the side surface of the kitchen knife and pursuing wear resistance by the fluorine coating layer.

[0042] Furthermore, another effect of the present invention is that since the side of the kitchen knife is formed with a fluorine coating layer and a PVD coating layer, thinly sliced ​​food does not stick to the kitchen knife, providing the advantage of convenience in use.

[0043] FIG. 1 is an exemplary drawing for explaining a state of cutting a cutting knife material for manufacturing a kitchen knife, which is a manufacturing system for a kitchen flexible knife according to the present invention.

[0044] FIG. 2 is an exemplary drawing for explaining a state of cutting from a cutting knife material to a processing target knife in the shape of a kitchen knife according to the present invention, with respect to a kitchen flexible knife manufacturing system.

[0045] FIG. 3 is an exemplary diagram illustrating a heat treatment process for a knife to be processed, for a kitchen flexible knife manufacturing system according to the present invention.

[0046] FIG. 4 is an exemplary diagram illustrating a process of cooling a heated knife to be processed, for a kitchen flexible knife manufacturing system according to the present invention.

[0047] FIG. 5 is an exemplary diagram illustrating a hardness measurement process for a knife to be processed, for a kitchen flexible knife manufacturing system according to the present invention.

[0048] FIG. 6 is an exemplary diagram illustrating a process for inspecting the surface condition of a knife to be processed, for a kitchen flexible knife manufacturing system according to the present invention.

[0049] FIG. 7 is an exemplary diagram for explaining a diamond polishing process as processing of the side surface of a knife to be processed, in relation to a kitchen flexible knife manufacturing system according to the present invention.

[0050] FIG. 8 is an exemplary diagram for explaining a polishing process using a marble roller as processing for the side surface of a knife to be processed, according to a kitchen flexible knife manufacturing system according to the present invention.

[0051] FIG. 9 is an exemplary diagram illustrating a process of washing a polished knife for processing, as processing of a side surface of a knife to be processed, according to a kitchen flexible knife manufacturing system of the present invention.

[0052] FIG. 10 is an exemplary diagram illustrating a process of grinding a blade portion of a knife to be processed, for a kitchen flexible knife manufacturing system according to the present invention.

[0053] FIG. 11 is an exemplary diagram illustrating a process for removing a burr from a blade portion of a knife to be processed, for a kitchen flexible knife manufacturing system according to the present invention.

[0054] FIG. 12 is an exemplary diagram illustrating a process of spraying a primer coating agent as a fluorine coating process on the side surface of a knife to be processed, in accordance with a kitchen flexible knife manufacturing system of the present invention.

[0055] FIG. 13 is an exemplary diagram illustrating a fluorine coating process for the side surface of a knife to be processed according to the present invention, and a firing process of a knife to be processed to which a primer coating agent has been applied.

[0056] FIG. 14 is an exemplary diagram illustrating a process for drying a knife to be processed with a primer coating layer formed thereon, as a fluorine coating process for a side surface of a knife to be processed according to the present invention, a manufacturing system for a flexible kitchen knife.

[0057] FIG. 15 is an exemplary diagram illustrating a process of spraying a dot ball coating agent as a fluorine coating process on the side surface of a knife to be processed, according to a kitchen flexible knife manufacturing system of the present invention.

[0058] FIG. 16 is an exemplary diagram illustrating a fluorine coating process for the side surface of a knife to be processed according to the present invention, and a firing process of a knife to be processed to which a dot ball coating agent has been applied.

[0059] FIG. 17 is an exemplary diagram illustrating a process for drying a knife to be processed on which a dot ball coating layer is formed, as a fluorine coating process for a side surface of a knife to be processed according to the present invention, for a kitchen flexible knife manufacturing system.

[0060] FIG. 18 is an exemplary diagram illustrating a process of spraying a top coating agent as a fluorine coating process on the side surface of a knife to be processed, in accordance with a kitchen flexible knife manufacturing system of the present invention.

[0061] FIG. 19 is an exemplary diagram illustrating a fluorine coating process for the side surface of a knife to be processed according to the present invention, and a firing process of a knife to be processed to which a top coating agent has been applied.

[0062] FIG. 20 is an exemplary diagram illustrating a process for drying a knife to be processed with a top coating layer formed thereon, as a fluorine coating process for a side surface of a knife to be processed, according to a manufacturing system for a flexible kitchen knife according to the present invention.

[0063] Fig. 21 is a cross-sectional view illustrating a state in which a fluorine coating layer is formed on the surface of a knife to be processed by the fluorine coating configuration of a kitchen flexible knife manufacturing system according to the present invention.

[0064] Figure 22 is a coating process flow chart showing a PVD coating process for a knife to be processed, for a kitchen flexible knife manufacturing system according to the present invention.

[0065] FIG. 23 is an exemplary diagram for explaining a coating heating process for a knife to be processed as a PVD coating process for a kitchen flexible knife manufacturing system according to the present invention.

[0066] FIG. 24 is an exemplary diagram for explaining a detailed process of PVD coating on a knife to be processed in a coating device as a PVD coating process for a kitchen flexible knife manufacturing system according to the present invention.

[0067] FIG. 25 is an exemplary diagram illustrating a polishing process for a handle coupled to a knife to be processed, for a kitchen flexible knife manufacturing system according to the present invention.

[0068] FIG. 26 is an exemplary diagram illustrating a fine grinding process for a handle coupled to a knife to be processed, for a kitchen flexible knife manufacturing system according to the present invention.

[0069] Fig. 27 is an exemplary diagram illustrating a coating blade polishing process for a PVD-coated kitchen knife blade according to a kitchen flexible knife manufacturing system according to the present invention.

[0070] Fig. 28 is an exemplary diagram illustrating a process for removing a coating blade burr from a PVD-coated kitchen knife blade according to a kitchen flexible knife manufacturing system according to the present invention.

[0071] Figure 29 is a cross-sectional view illustrating a state in which a PVD coating layer and a coating lump are formed on the blade portion of a PVD-coated kitchen knife during the manufacturing process of a kitchen flexible knife according to the present invention.

[0072] FIG. 30 is an exemplary diagram illustrating a process of removing a lump of blade coating on a side surface near the blade of a PVD-coated kitchen knife by polishing, which relates to a kitchen flexible knife manufacturing system according to the present invention.

[0073] FIG. 31 is an exemplary diagram illustrating a process for removing a blade tip coating bar on a blade portion of a PVD-coated kitchen knife, in accordance with a kitchen flexible knife manufacturing system according to the present invention.

[0074] Fig. 32 is a cross-sectional view illustrating a process for manufacturing a flexible kitchen knife according to the present invention, in which lumps and burrs near the blade of a PVD-coated kitchen knife are removed.

[0075] Figure 33 is an exemplary diagram illustrating the final washing process for a kitchen flexible knife manufactured by a kitchen flexible knife manufacturing system according to the present invention.

[0076] FIG. 34 is an exemplary diagram illustrating a laser marking process on a side surface of a kitchen flexible knife manufactured by a kitchen flexible knife manufacturing system according to the present invention.

[0077] Figure 35 is an overall flow chart of a method for manufacturing a flexible kitchen knife according to the present invention.

[0078] Figure 36 is a detailed flowchart of the basic processes in a method for manufacturing a flexible kitchen knife according to the present invention.

[0079] Figure 37 is a detailed flowchart of the fluorine coating process among the methods for manufacturing a kitchen flexible knife according to the present invention.

[0080] Figure 38 is a detailed flowchart of the PVD coating process among the methods for manufacturing a flexible kitchen knife according to the present invention.

[0081] FIG. 39 is a photograph of an example of a flexible knife manufactured by a method for manufacturing a kitchen flexible knife according to the present invention, showing a state in which a surface polishing process has been performed, and a state in which the surface is subsequently coated with fluorine-titanium and PVd, resulting in a surface with numerous protrusions.

[0082] FIG. 40 is a photograph of an exemplary embodiment of a flexible knife manufactured by a method for manufacturing a kitchen flexible knife according to the present invention, showing a state in which a surface polishing process has been performed, and an example of a flexible type manufactured after the surface has been coated with fluorine-titanium and PVD.

[0083] Fig. 41 is an exemplary photograph of a flexible knife manufactured by a method for manufacturing a kitchen flexible knife according to the present invention, and is an exemplary photograph for explaining a state in which the knife is made of a flexible material and is easily bent.

[0084] The following is a detailed explanation with reference to the attached drawings.

[0085]

[0086] That is, the flexible kitchen knife with excellent wear resistance and the manufacturing system and manufacturing method according to the present invention are technologies related to the process of manufacturing a kitchen knife from a flexible disk material, as shown in the attached drawings 1 to 41, etc.

[0087] These flexible kitchen knives are kitchen knives that have the property of bending laterally due to their ductility and elasticity, such as band saws and boning knives. Since they are made of such well-known materials, the characteristics of these materials are generally thin and light, so they do not strain the user's hands or wrists even after long-term use. In addition, because they are thin, the blade does not wear out easily, so you can cut food well for a long time without having to sharpen the blade during use.

[0088] That is, as in the example of Fig. 41, during the manufacturing process of the flexible knife according to the present invention, when the flexible knife with the side surface polished was pressed sideways, it was shown to bend. Although it is made of a light material, since it bends sideways, it will be able to remove bones from food ingredients well. In addition, since it does not break that much, it can be used for a long time. Materials used in boning, etc., or materials used in saws, scrapers, spatulas, etc. can be applied and manufactured as the material of the flexible knife according to the present invention having such durability.

[0089] In addition, as described later, since a fluorine coating layer is formed on the side surface of this flexible material kitchen knife, foreign substances do not stick to it easily, so it can be used hygienically, and it can be used for a long time because it is wear-resistant.

[0090] Furthermore, since a PVD coating layer is formed on the side and blade of the kitchen knife, and the PVD-coated blade part is also polished, it has the advantage of not wearing out easily and being able to be used for a long time.

[0091]

[0092] Looking at the configuration of the flexible kitchen knife (10) according to the present invention, a fluorine coating layer (5) consisting of a primer coating layer (501), a dot ball coating layer (502), and a top coating layer (503) is formed on the side surface of the polished kitchen knife (1).

[0093] Additionally, a PVD coating layer is formed as the upper layer of the fluorine coating layer (5).

[0094] In addition, since it is a flexible material, the kitchen knife (1) is made of a material that bends laterally.

[0095]

[0096] Furthermore, the fluorine coating layer (5) is composed of a primer coating layer (501) formed by firing a primer coating agent, a dot ball coating layer (502) formed by firing a dot ball coating agent on top of the primer coating layer (501), and a top coating layer (503) formed by firing a top coating agent on top of the dot ball coating layer (502).

[0097] Accordingly, the primer coating layer (501) is formed by firing a primer coating agent containing 100 weight ratio of fluororesin and 1 to 2 weight ratio of titanium.

[0098] In addition, the dot ball coating layer (502) is formed by firing a dot ball coating agent containing 100 weight ratio of fluororesin and 1 to 5 weight ratio of titanium.

[0099] In addition, the top coating layer (503) is formed by firing a top coating agent including a fluororesin.

[0100]

[0101] In particular, in the process of forming the fluorine, titanium coating layer, in addition to the primer coating layer, in the process of forming the dot ball coating layer, the nozzle that sprays the dot ball coating agent is sprayed from multiple directions and sprayed multiple times, so that the fluorine coating layer is formed with somewhat uneven, irregular protrusions on the side surface of the kitchen knife. In addition to this fluorine coating layer, the outer surface of the fluorine coating layer, etc. is formed with protruding protrusions that form a gentle curve by the top coating layer and the subsequent PVD coating layer.

[0102] Thus, depending on the condition of the side surface of the kitchen knife (1) on which the fluorine coating layer is formed, even when cutting thin food, it will not stick to the kitchen knife but will fall off immediately, so the cutting process will be stable and quick.

[0103] This will allow the cooking process to proceed quickly and safely, with less risk of the chef cutting his or her hands.

[0104]

[0105] For this purpose, a manufacturing system for a flexible kitchen knife with excellent wear resistance according to the present invention is examined. As shown in Fig. 1, a wide flat flexible material iron plate is cut to a size that can manufacture a kitchen knife (1).

[0106] That is, it is equipped with a fabric cutting device (11) that cuts the blade fabric that forms the blade's original steel plate. By cutting with this fabric cutting device (11), a cutting blade material (111) is created.

[0107] In addition, as shown in Fig. 2, it is provided with a knife-shaped pressing device (12) that cuts the cut cutting knife material (111) into a knife shape. In general, a knife to be processed (112) is made by cutting by the knife-shaped pressing device (12). This knife to be processed (112) generally has a shape of a kitchen knife (1), and a kitchen knife (1) is manufactured through a subsequent process such as polishing and coating.

[0108]

[0109] Accordingly, for the subsequent process, a heat treatment device (13) for heat-treating the cut target knife (112) as shown in Fig. 3 is provided. Through this heat treatment, the strength of the target knife (112) made of a flexible material is strengthened.

[0110] Next, as shown in Fig. 4, a cooling device (14) is provided to cool the heat-treated knife (112). Accordingly, as shown in Fig. 5, the hardness of the knife (112) to be processed is measured with a hardness measuring device (15), and as shown in Fig. 6, the surface condition of the knife (112) to be processed can be checked with a surface inspection magnifier (16). In this way, if the physical properties of the knife (112) to be processed are good, the subsequent processes for manufacturing kitchen knives, such as polishing and coating, can be performed.

[0111]

[0112] And, as shown in Fig. 7, it is equipped with a diamond grinding roll device (17) for grinding a target knife (112). That is, the side surface of the target knife (112) is ground by the diamond grinding material of the diamond grinding roll device (17).

[0113] In addition, as shown in Fig. 8, a polishing device (18, 19) for polishing a cutting tool (112) to be processed is provided. This is a first and second polishing process using a polishing roller on the side surface of the cutting tool (112).

[0114] It would be desirable for these hemp rollers to have a rougher hemp roller for the first polishing and a finer hemp roller for the second polishing. In this way, through the polishing and polishing process for the side surface of the knife (112) to be processed, fine protrusions or grooves on the surface are removed, a uniform surface is formed, and damage can be prevented.

[0115] Next, as shown in Fig. 9, the processing target knife (112) is cleaned by a polishing cleaning device (20).

[0116]

[0117] Next, the blade sharpening process is performed as in Fig. 10.

[0118] That is, as shown in Fig. 10, it is equipped with a blade grinder (21) for grinding the blade portion of the target knife (112).

[0119] In addition, as shown in Fig. 11, it is equipped with a blade burr remover (22) that removes burrs from the blade portion.

[0120]

[0121] Next, as shown in Fig. 24, a sandpaper polishing device (41) for polishing a handle (2) attached to a knife to be processed (112), and as shown in Fig. 25, a handle fine polishing device (42) for finely polishing a handle (2) attached to a knife to be processed (112) are provided. Accordingly, a kitchen knife (1) is prepared by combining a handle (2) to a knife to be processed (112).

[0122]

[0123] In addition, as shown in FIGS. 21 to 23, components for performing a PVD coating process on a target knife (112) are provided.

[0124] That is, as in Fig. 22, a coating heating device (25) for heating the target knife (112) is provided. That is, the target knife (112) is heated for PVD coating.

[0125] And, as shown in Fig. 23, it is provided with a coating device (26) that forms a PVD coating layer (8) by coating the surface of a heated processing target knife (112).

[0126] In addition, a post-coating cooling device for cooling the knife to be processed (112), a hardness measuring device for measuring the hardness of the coated kitchen knife (1), a film thickness device for measuring the thickness of the coating film of the kitchen knife (1), and an adhesion measuring device for measuring the adhesion of the coating film of the kitchen knife (1) are provided to perform inspection of the PVD coated coating layer.

[0127]

[0128] In addition, for the PVD coating layer, a configuration is provided to remove the excessive, thickly coated lumps on the blade. That is, as in Fig. 26, a coating blade leather polishing device (45) for polishing the coating layer on the blade of a kitchen knife (1), and a coating blade leather burr removing device (46) for removing burrs attached to the blade of a kitchen knife (1) are provided. In particular, the coating blade leather polishing device (45), the coating blade leather burr removing device (46), etc. are provided with a polishing device made of leather, so that only unnecessary parts can be removed without damaging the coating layer and the coating thickness.

[0129]

[0130] Next, as shown in FIGS. 12 to 20, configurations are provided to form a fluorine coating layer on the target knife (112).

[0131] This fluorine coating technology is mainly presented as a surface coating technology for pots and frying pans, and this fluorine coating technology is applied to a flexible kitchen knife with excellent wear resistance according to the present invention. Therefore, the fluorine coating technology applied to the present invention is a known technology, and thus detailed technical details thereof will be omitted. For the flexible kitchen knife (1) according to the present invention, a coating agent spraying technology, a firing technology in a furnace, and a cooling and drying technology for a kitchen knife having a coating layer formed in this way are implemented.

[0132] In addition, this fluorine coating technology proposes a process of forming a primer coating layer on the surface of a kitchen knife (1) using a primer coating agent, a process of forming a dot ball coating layer on top of this primer coating layer, and a process of forming a top coating layer to cover this fluorine coating layer. Accordingly, the known technical details can be applied to technologies related to primer coating agents, dot ball coating agents, and dot coating agents, but the content of components such as fluorine and titanium included therewith can be implemented by applying the technical details described below.

[0133]

[0134] First, devices for applying a primer coating to the side surface of the target knife (112) to be processed are provided.

[0135] That is, as shown in Fig. 12, it is equipped with a primer spraying device (511) that sprays a primer coating agent onto the side surface of a knife (112) to be processed for manufacturing a kitchen knife (1).

[0136] And, as shown in Fig. 13, a primer firing furnace (512) is provided for firing a processing target knife (112) to which a primer coating agent has been applied.

[0137] In addition, as shown in Fig. 14, it includes a primer drying device (513) that dries and cools the heated target knife (112).

[0138] A primer coating layer (501) is formed on the surface of a knife (112) to be processed by a primer coating process using a primer spraying device (511), a primer firing device (512), and a primer drying device (513). While the primer coating layer (501) is stably attached to the surface of the knife (112) to be processed, a dot ball coating layer, which is a fluorine coating layer formed on top, adheres well, and known components that enable the primer coating agent to be well attached to the surface of the knife (112) to be processed in this way can be included in the primer coating agent and implemented.

[0139] In this way, with the primer coating layer formed, the process of forming the dot ball coating layer, which is the next step, can be performed upwards. To this end, a device is provided for performing dot ball coating on the side surface of the target knife (112) while the primer is coated.

[0140] That is, as shown in Fig. 15, a dot spraying device (521) is provided that sprays a dot ball coating agent onto the surface of a processing target knife (112) on which a primer coating agent is coated to form a primer coating layer (501). Thus, the dot ball coating agent is sprayed onto the upper surface of the primer coating layer (501). In order to form a dot ball coating layer in various shapes, a plurality of dot ball coating agent spray nozzles are installed in various locations to spray, so that dot balls in a convex shape of various dots can be formed on the processing target knife (112). In addition, after the subsequent firing and drying processes are performed, this dot ball coating process can be performed several times again to form more diverse and irregular dot balls.

[0141] In this way, with the dot ball coating agent sprayed, a dot firing furnace (522) is provided for heating and firing the processing target knife (112) to which the dot ball coating agent has been applied, as shown in Fig. 16.

[0142] And, as shown in Fig. 17, it includes a dot drying device (523) that dries and cools the heated target knife (112).

[0143]

[0144] In this way, a device for applying a top coating to the side surface of a processing target knife (112) in a dot ball coating state is provided, and a top coating spraying device (531) is provided for spraying a top coating agent onto the side surface of a processing target knife (112) on which a primer coating layer (501) and a dot ball coating layer (502) are formed, as shown in FIG. 18.

[0145] In addition, for a processing target knife (112) to which a top coating agent has been applied, a top coating firing furnace (532) for heating and firing is provided as in FIG. 19, and further, a top coating drying device (533) for drying and cooling the heated processing target knife (112) as in FIG. 20 is included.

[0146] Thus, as shown in Fig. 21, a fluorine coating layer (5) consisting of a primer coating layer (501), a dot ball coating layer (502), and a top coating layer (503) is formed on the surface of the target knife (112).

[0147]

[0148] Hereinafter, a method for manufacturing a flexible kitchen knife, which is a process for manufacturing a flexible kitchen knife using a flexible kitchen knife manufacturing system having excellent wear resistance according to the present invention, will be examined.

[0149] First, as in the example of Fig. 1, a wide flat plate made of flexible material is provided, and then the cutting knife (111) and the processing target knife (112) are cut to fit the size of the kitchen knife (1) to be manufactured.

[0150] That is, as shown in FIGS. 1 to 6, a flexible knife raw material processing step (S10) is performed to cut a flexible knife raw material plate with a flexible knife processing target knife (112) having a knife size from the flexible knife raw material plate using a fabric cutting device (11) and a knife-shaped pressing device (12).

[0151] Here, looking at the detailed steps of the above-mentioned knife raw material processing step (S10), as shown in Fig. 1, a fabric cutting step (S11) is performed to cut a flexible knife raw material (111) from a flat plate by a fabric cutting device (11).

[0152] And, as shown in Fig. 2, a knife-shaped pressing step (S12) is performed to cut the cutting knife material (111) with a knife-shaped processing target knife (112) using a knife-shaped pressing device (12).

[0153]

[0154] Next, as shown in FIGS. 3 to 6, a flexible knife raw material post-processing step (S13) is performed on the processed knife (112). Accordingly, through this flexible knife raw material post-processing step (S13), it is possible to examine whether the processed knife (112), which is the raw material of the kitchen knife (1), is suitable for manufacturing a kitchen knife through heat treatment and other inspections.

[0155] That is, the flexible knife raw material processing step (S13) is a flexible knife raw material heat treatment step (S131) ​​in which the cut processing target knife (112) is heat-treated at high temperature using a heat treatment device (13) as shown in Fig. 3. By performing the heat treatment in this way, the characteristics of the processing target knife (112) are improved.

[0156] And as shown in Fig. 4, the flexible knife raw material processing step (S13) performs a knife raw material cooling step (S132) of cooling the high-temperature processing target knife (112) with a cooling device (14) to lower the temperature so that subsequent processing can be performed.

[0157] Next, as shown in Fig. 5, the flexible knife raw material processing step (S13) performs a knife raw material hardness measurement step (S133) in which the hardness of the knife to be processed (112) is measured using a hardness measuring device (15) to check whether it is in a suitable condition.

[0158] In addition, as shown in Fig. 6, the flexible knife raw material processing step (S13) performs a knife raw material surface inspection step (S134) of inspecting the surface condition of the knife to be processed (112) using a surface inspection magnifier (16). Thus, the surface condition of the knife to be processed (112) can be inspected.

[0159]

[0160] In the next step, a full-scale processing process is performed on the prepared processing target knife (112). That is, first, processing is performed on the side surface of the processing target knife (112). That is, as shown in FIGS. 7 to 9, a flexible knife surface processing step (S20) is performed to process the side surface of the processing target knife (112) using a grinding device.

[0161] This flexible knife surface processing step (S20) is to perform a diamond rolling step (S21) of polishing the side surface of the knife to be processed (112) using a diamond polishing roll device (17) as shown in Fig. 7.

[0162] And the above flexible knife surface processing step (S20) is to perform a primary polishing step (S22) of polishing the surface of the knife (112) to be processed by first polishing the surface using a primary polishing roller device (18) as shown in Fig. 8.

[0163] In addition, the flexible knife surface processing step (S20) performs a secondary polishing step (S23) of polishing the surface of the knife to be processed (112) by a secondary polishing device (19) having a finer roller surface than the primary polishing device (18).

[0164] These hemp rollers have a hemp roller surface made of hemp fabric, and perform polishing work on the surface of the blade (112) to be processed through the rough fibers of the hemp.

[0165] Accordingly, the second polishing roller is made of a polishing roller having a finer structure than the first polishing roller, and in the first polishing step (S22) of the polishing roller surface, a rough polishing operation can be performed, and in the second polishing step (S23) of the polishing roller surface, a finer polishing operation can be performed.

[0166] And as shown in Fig. 9, the flexible knife surface processing step (S20) performs a post-polishing cleaning step (S24) of cleaning the knife (112) to be processed with a post-polishing cleaning device (20) after polishing and polishing. In this way, the side surface of the flexible knife is processed, and manufacturing can be completed as shown in the example in the right photo of Fig. 39.

[0167]

[0168] In this way, the fluorine coating process is performed on the side surface of the knife (112) to be processed for manufacturing a flexible kitchen knife (1). In particular, the fluorine coating process will be performed on the side surface of the kitchen knife (1).

[0169] That is, a flexible knife dot coating step (S30) is performed to form a fluorine coating layer on the surface of the knife to be processed (112) as shown in FIGS. 12 to 20.

[0170] Thus, a fluorine coating layer (5) is formed on the surface of the processed target knife (112) through surface polishing, etc.

[0171] Here, looking at the detailed steps of the flexible knife dot coating step (S30), a surface cleaning step (S31) is performed to remove residues on the side surface of the knife to be processed (112) and remove impurities through sanding. In other words, impurities are removed from the surface of the knife to be processed (112) before the coating operation.

[0172] And the above flexible knife dot coating step (S30) is to perform a primer fluorine-titanium coating step (S32) of coating a primer coating agent through firing on the surface of the knife to be processed (112) as shown in FIGS. 12 to 14.

[0173] This primer coating layer (501) is in direct contact with the surface of the blade to be processed (112), and thus, this primer coating agent enables the blade to be processed (112) and the subsequent dot ball coating agent to adhere well to each other, and it is preferable that it be composed of known components for this purpose.

[0174] Looking at the detailed steps of the primer fluorine-titanium coating step (S32) for this, as shown in Fig. 12, a primer spraying step (S321) is performed in which a primer coating agent is sprayed onto the side surface of the target knife (112) using a primer spraying device (511).

[0175] Accordingly, such a primer coating agent may be composed of known components that can adhere well to a processing target knife (112) in fluorine coating technology. In particular, in addition to such a known primer coating agent, the primer coating agent may be implemented to include 100 wt.% of fluororesin and 1 to 2 wt.% of titanium. Therefore, by including a titanium component together with the fluororesin, it is expected that the strength of the kitchen knife can be further improved.

[0176] Next, the primer fluorine-titanium coating step (S32) is to perform a primer furnace heating step (S322) in which the processing target knife (112) to which the primer coating agent is applied is heated and fired in a primer furnace (512) as shown in FIG. 13.

[0177] In general, the firing in this primer heating step (S322) can be carried out by heating to approximately 230°C.

[0178] And as shown in Fig. 14, the primer fluorine-titanium coating step (S32) performs a primer drying step (S323) of drying and cooling the heated target knife (112), so that a primer coating layer (501) is formed thinly on the surface of the target knife (112).

[0179]

[0180] Next, the flexible knife dot coating step (S30) is to perform a dot ball fluorine-titanium coating step (S33) of coating a dot ball coating agent through firing on the surface of a processing target knife (112) coated with a primer coating agent, as shown in FIGS. 15 to 17, etc.

[0181] Looking at the detailed steps of the above dot ball fluorine-titanium coating step (S33), as shown in FIG. 15, a dot ball spraying step (S331) is performed in which a dot ball coating agent is sprayed using a dot ball spraying device (521) on the side surface of a processing target knife (112) on which a primer coating agent is coated to form a primer coating layer (501).

[0182] Accordingly, this dot ball fluorine-titanium coating step (S33) is the second coating process of the generally known fluorine coating, and may comprise a coating agent by including known intermediate fluorine coating agent components.

[0183] In addition, the dot ball coating agent of the present invention includes 100 wt% of fluororesin and 1 to 5 wt% of titanium. Thus, it includes a titanium component along with the fluororesin, and by including the titanium (Ti) component with improved durability and wear resistance, the durability and wear resistance of kitchen knives can be improved.

[0184] In addition, in the dot ball spraying step (S331), multiple spray nozzles are provided so that the dot ball coating agent is sprayed from multiple directions, thereby enabling irregular protrusions to be formed in the shape of dot balls in various shapes.

[0185] In this way, the above dot ball fluorine-titanium coating step (S33) performs a dot ball furnace heating step (S332) in which the processing target knife (112) to which the dot ball coating agent has been applied is heated and fired in a dot ball furnace (522), as shown in Fig. 16. In general, the dot ball furnace heating step (S332) is a firing process performed at a high temperature of 380°C to 390°C.

[0186]

[0187] Afterwards, the dot ball fluorine-titanium coating step (S33) performs a dot ball drying step (S333) of drying and cooling the heated processing target knife (112).

[0188] Thus, a dot ball coating layer (502) is formed on the surface of the processing target knife (112) on which the primer coating layer (501) is formed.

[0189] In addition, this dot ball fluorine-titanium coating process can be repeated multiple times, and by repeating this multiple times, it will be possible to form protrusions in a more irregular dot ball shape.

[0190]

[0191] Next, as a step for forming a fluorine coating layer, a top fluorine coating step (S34) is performed to coat the surface of the processing target knife (112) coated with a dot ball coating agent by firing a top coating agent including a fluorine resin. This top fluorine coating step (S34) and the top coating layer (503) correspond to the top coating in a generally known fluorine coating process, and the top coating agent for this may also be a top coating agent of a known fluorine coating.

[0192] Accordingly, the top fluorine coating step (S34) is a top coating spraying step (S341) in which a top coating agent is sprayed on the side surface of the processing target knife (112) on which a primer coating layer (501) and a dot ball coating layer (502) are formed using a top coating spraying device (531), as shown in FIG. 18.

[0193] And the above top fluorine coating step (S34) is to perform a top coating furnace heating step (S342) in which the processing target knife (112) to which the top coating agent has been applied is heated and fired in a top coating furnace (532) as shown in Fig. 19. Accordingly, in this top coating furnace heating step (S32), firing is performed at a high temperature of approximately 380°C to 390°C.

[0194] Afterwards, the top fluorine coating step (S34) is to perform a top coating drying step (S343) of drying and cooling the heated processing target knife (112) as shown in FIG. 20.

[0195] In this way, by forming a fluorine coating layer (5) on the surface of the knife to be processed (112), foreign substances do not stick easily, enabling hygienic use, and the wear resistance of the surface can be improved. That is, as shown in the example of the left photo of Fig. 39, it can be seen that the surface is somewhat rough. If a harvest PVD coating is added in this state, the strength of the surface is further improved, thereby improving the wear resistance, and thus the wear resistance of the flexible knife according to the present invention is maintained even when used multiple times, enabling the use of the flexible knife in a hygienic manner.

[0196]

[0197] As described above, after the process of polishing the side surface of the knife to be processed (112) and forming a fluorine coating layer (5) is completed, processing of the blade portion of the kitchen knife (1) is performed.

[0198] That is, as in Fig. 10, Fig. 11, etc., a flexible knife blade processing step (S40) is performed to polish the blade portion of the knife to be processed (112) using a blade grinder (21).

[0199] Accordingly, the blade processing step (S40) performs a blade grinding step (S41) to form a blade by grinding the blade (402) portion of the blade (112) to be processed using a blade grinder (21), as shown in Fig. 10. Thus, the blade portion is formed sharply.

[0200] In addition, as shown in Fig. 11, a blade burr removal step (S42) is performed to remove burrs formed at the tip of the blade (402) by blade grinding using a blade burr remover (22).

[0201] That is, during the blade sharpening process, some burrs may stick to the blade, and these burrs are removed to sharpen the blade.

[0202]

[0203] As described above, after forming a fluorine coating layer on the surface of the knife (112) to be processed for manufacturing a flexible kitchen knife (1), PVD coating can be performed to further enhance the sturdiness and wear resistance of the fluorine coating layer and the kitchen knife (1). As is known, this PVD coating is a technology that applies a deposition technology to coat the surface of the kitchen knife (1) with a metal component such as titanium (Ti). Thus, wear resistance and durability are enhanced even after long-term use, and various known PVD technologies can be applied to this, as will be described later.

[0204] Looking at this in more detail, as shown in FIGS. 22 to 24, after machining the blade portion of the knife to be processed (112), a flexible knife PVD knife coating step (S50) is performed to form a PVD coating layer (8) through a PVD coating process for the knife to be processed (112).

[0205]

[0206] Accordingly, the flexible knife PVD coating step (S50) performs a coating loading step (S51) of loading a processed knife (112) with a processed blade into a coating work position.

[0207] And the above flexible knife PVD coating step (S50) performs a pre-coating inspection step (S52) that inspects the surface condition of the knife to be processed (112) prior to coating. In general, the inspection process can be performed through visual inspection and microscopic inspection, and will inspect for any damaged parts from the previous process or for foreign substances or poor surface condition.

[0208] And the above flexible knife PVD coating step (S50) is to perform a coating pre-treatment step (S53) including a process of washing the target knife (112) through a coating pre-washing device.

[0209] This above-mentioned coating pre-treatment step (S53) is to perform a coating pre-washing step (S531) of washing the target knife (112) using a coating pre-washing device.

[0210] And the above coating pretreatment step (S53) is to perform a coating pretreatment inspection step (S532) in which the washed target knife (112) is visually inspected and then inspected under a microscope. In other words, it will be possible to check whether any foreign substances have not been removed.

[0211]

[0212] Next, a coating step (S54) is performed to form a coating process for the target knife (112) as shown in FIGS. 22 to 24.

[0213] This above coating step (S54) is to perform a coating heating step (S541) of heating the processing target knife (112) as a coating target with a coating heating device (25).

[0214] As is known, this PVD coating technology involves a deposition process at high temperatures (approximately 600°C or higher), and is heated to a high temperature through a heating process that lasts approximately 1 to 3 hours.

[0215]

[0216] Next, the coating step (S54) is a coating step (S542) in which a PVD coating layer (8) is formed on the target knife (112) using a PVD coating device (26), as in the example of Fig. 24. This coating process will take approximately 1 to 3 hours.

[0217] Accordingly, the PVD coating technology for the flexible kitchen knife according to the present invention can apply known technologies, and the coating material of the PVD coating layer (8) can also be implemented by including any one of TiN, TiCN, CrN, TiAlN, AlTiN, ZrN, and TiC, as is known. By forming a PVD coating layer using such a coating material on the kitchen knife (1), wear resistance is improved, which helps in sanitary and safe use even when cooking food.

[0218]

[0219] Next, the coating step (S54) performs a post-coating cooling step (S543) in which the processing target knife (112) that has completed the coating process is cooled using a post-coating cooling device. This cooling process may take approximately one hour.

[0220] Additional configurations in other PVD coating processes may be implemented using known PVD coating techniques.

[0221]

[0222] After performing the PVD coating process as described above, a post-coating inspection step (S55) is performed to inspect the coated target knife (112).

[0223] The above-mentioned post-coating inspection step (S55) performs a post-coating inspection step (S551) that includes a visual inspection and a microscopic inspection of the coated target knife (112).

[0224] And the above-mentioned post-coating inspection step (S55) performs a coating hardness measurement step (S552) of measuring the hardness of the coating layer with a hardness measurement device for the coated processing target knife (112), and also performs a coating film thickness measurement step (S553) of measuring the film thickness of the coating layer with a film thickness measurement device for the coated processing target knife (112). In other words, it is to check whether the PVD coating layer is well formed.

[0225] In addition, the above-mentioned post-coating inspection step (S55) performs a coating adhesion measurement step (S554) in which the adhesion to the coating layer is measured using an adhesion measurement device for the coated processing target knife (112).

[0226] This way, you can check whether the coating layer maintains its adhesion even when using a kitchen knife later.

[0227]

[0228] As described above, after the fluorine coating layer is formed and the PVD coating process is performed on the knife (112) to be processed for manufacturing a flexible kitchen knife (1), the handle is attached.

[0229] That is, the knife handle installation step (S60) is performed to form a kitchen knife (1) by combining a handle (2) with a knife to be processed (112).

[0230] Here, looking at the detailed steps of the knife handle preparation step (S60), as shown in Fig. 25, the handle-on-sandpaper polishing step (S61) is performed to polish the upper side of the handle (2) coupled to the knife (112) to be processed, which becomes the kitchen knife (1), using a sandpaper polishing device (41).

[0231] Next, the knife handle installation step (S60) is to perform the handle-under-sandpaper polishing step (S62) of polishing the lower side of the handle (2) attached to the kitchen knife (1) with a sandpaper polishing device (41). In general, the protruding parts of the handle and the kitchen knife are polished with rough sandpaper to create a smooth surface.

[0232]

[0233] And the above knife handle installation step (S60) is to perform the handle-on-fine-polishing step (S63) of polishing the upper side of the handle (2) attached to the kitchen knife (1) with a handle fine-polishing device (42) as shown in Fig. 26.

[0234] In addition, the above knife handle installation step (S60) performs a handle under-fine polishing step (S64) in which the lower side of the handle (2) attached to the kitchen knife (1) is polished with a handle fine polishing device (42). It is preferable to polish with a finer polishing device, generally using finer sandpaper or hemp, etc. Accordingly, as in the example of Fig. 40, the handle portion is neatly organized, making it convenient to use.

[0235]

[0236] Next, as shown in Figs. 27 to 32, a process is performed to polish the blade portion of the coated portion applied to the processing target knife (112), i.e., the kitchen knife (1), which has undergone a coating process.

[0237] That is, in a state where the entire blade to be processed (112) is coated, a coating blade processing step (S70) is performed to remove the clumped coating portion among the thickly coated coating layer (8) on the blade (402).

[0238] Accordingly, as shown in Fig. 29, the coating materials may form a layer thicker than the blade near the tip of the blade (402). In this state, there is a risk that the blade will not cut well and may not be able to cut food properly. Therefore, it is preferable to grind the blade through the coating blade processing step (S70).

[0239]

[0240] Accordingly, the coating blade processing step (S70) is a step of performing a coating blade surface-leather polishing step (S71) of polishing the coating layer of the blade surface (401), which is the side surface of the blade body (4) of the kitchen knife (1), using a coating blade leather polishing device (45) on the coated kitchen knife (1). That is, as shown in Fig. 30, the portion of the blade body coating lump (81) that is thicker than the blade surface (401) is removed.

[0241] Next, as shown in Fig. 31, a coated blade-leather polishing step (S72) is performed to polish the coating layer of the blade (402) of the coated kitchen knife (1) using a coated blade leather polishing device (45). Thus, the tip coating lump (82) present on the blade is removed, thereby sharpening the blade.

[0242]

[0243] In addition, as shown in Fig. 28, a coating blade-leather burr removal step (S80) is performed to remove the coating burr on the blade (402) of the kitchen knife (1) by using a coating blade leather burr removal device (46).

[0244] That is, it is to remove the coating burr that occurs during the sharpening process of sharpening the blade, such as removing the blade tip coating burr (83).

[0245] In this way, in the process of polishing the blade and removing the burrs, a leather polisher is used. Since the surface is made of leather, only unnecessary parts can be removed without damaging the blade or coating layer.

[0246]

[0247] Next, a post-processing step (S90) of washing and packaging the processed knife, as shown in Fig. 33, Fig. 34, etc., is performed.

[0248] This above-mentioned post-processing step (S90) is a process of organizing the polished kitchen knife (1) by packaging, etc., and first, a post-washing step (S91) is performed for the kitchen knife (1) on which the polishing process has been completed, in which the kitchen knife (1) is washed with a post-washing device (91).

[0249] And as shown in Fig. 34, the above-mentioned post-processing step (S90) is to perform a laser marking step (S92) of marking the cutting surface (401) of the kitchen knife (1) with a laser using a laser marking device (92). Thus, a pattern or logo, etc. is marked.

[0250] Furthermore, the above-mentioned post-processing step (S90) performs a packaging step (S93) of packaging the kitchen knife (1).

[0251]

[0252] This allows the manufacture of a flexible kitchen knife (1).

[0253] The flexible knife (1) according to the present invention, which is prepared as described above, forms a fluorine coating layer (5) on both sides centered around the blade body (4), and forms a PVD coating layer (8) as the outer layer of this fluorine coating layer (5). In particular, this fluorine coating layer (5) forms a primer coating layer (501) that directly contacts both sides of the blade body (4), and forms a dot ball coating layer (502) on which irregular protrusions are formed as the outer surface of this primer coating layer (501). Therefore, foreign substances or food ingredients do not stick well due to these irregular protrusions of the dot ball coating layer (502). That is, since conventional knives have a smooth surface, meat or cucumbers, etc. that are being cut stick to the smooth surface of the blade, but in the flexible knife (1) according to the present invention, gaps are created between the irregular protrusions of the dot ball coating layer (502), so that meat or cucumbers, etc. that are being cut do not stick well.

[0254] Furthermore, in the flexible knife (1) according to the present invention, a top coating layer (503) is formed as an outer layer of the dot ball coating layer (502) to form a fluorine coating layer (5). In addition, by forming a PVD coating layer (8) as an outer layer of the fluorine coating layer (5), durability and wear resistance are improved, and scratches or damage can be prevented even with long-term use.

[0255] That is, the flexible knife according to the present invention, which is prepared as described above, is easily bent as shown in FIGS. 39 to 41, but has improved durability and wear resistance, so that even when cooking hard ingredients, the ingredients are cooked well due to improved durability, and can be used for a long time.

[0256] Although the embodiments of the present invention have been described in detail above, this is an embodiment described so that a person having ordinary knowledge in the technical field to which the present invention pertains can easily practice the present invention, and therefore the technical idea of ​​the present invention should not be interpreted as being limited by the description of the embodiments.

[0257] As described above, the present invention can be usefully applied to the development and commercialization of kitchen knives with excellent wear resistance, such as kitchen knives made of a flexible material with excellent wear resistance, which are not only lightweight and convenient to use, but also have excellent wear resistance and do not allow food to stick to them through fluorine coating and PVD coating.

Claims

1. A flexible knife raw material processing step (S10) of cutting a flexible knife raw material plate with a flexible knife-sized processing target knife (112) using a fabric cutting device (11) and a knife-shaped pressing device (12); A flexible knife surface processing step (S20) for processing the side surface of a knife (112) to be processed using a grinding device; A flexible knife blade processing step (S40) for polishing the blade portion of a knife to be processed (112) using a blade grinder (21); A knife handle installation step (S60) of forming a kitchen knife (1) by combining a handle (2) with a knife to be processed (112); and Includes a post-processing step (S90) of washing and packaging the processed knife. A method for manufacturing a flexible kitchen knife with excellent wear resistance, characterized in that it further includes a flexible knife dot coating step (S30) of forming a fluorine coating layer on the surface of the knife to be processed (112).

2. In paragraph 1, The above flexible knife surface processing step (S20) is: A diamond rolling step (S21) for polishing the side surface of a knife to be processed (112) using a diamond grinding roll device (17); A primary polishing step (S22) of polishing the surface of a workpiece knife (112) that has been polished using a primary polishing roller (18); A secondary polishing step (S23) of polishing the surface of the knife to be processed (112) by a secondary polishing device (19) having a finer roller surface than the primary polishing device (18); and It includes a post-polishing cleaning step (S24) of cleaning the cutting tool (112) to be processed using a post-polishing cleaning device (20) after polishing and polishing. The above blade processing step (S40) is A blade grinding step (S41) for forming a blade by grinding the blade (402) of the blade to be processed (112) using a blade grinder (21); and It includes a blade burr removal step (S42) for removing burrs formed at the tip of the blade (402) by blade grinding using a blade burr remover (22). The above knife handle preparation step (S60) is Handle-on sandpaper polishing step (S61) of polishing the upper side of the handle (2) coupled to the knife (112) to be processed to become a kitchen knife (1) using a sandpaper polishing device (41); Handle-under-sanding step (S62) for sanding the lower side of the handle (2) attached to the kitchen knife (1) using a sanding device (41); A handle-fine grinding step (S63) for grinding the upper side of a handle (2) attached to a kitchen knife (1) using a handle fine grinding device (42); and Includes a handle under-fine grinding step (S64) for grinding the lower side of the handle (2) attached to the kitchen knife (1) with a handle fine grinding device (42). The above post-processing step (S90) is Post-washing step (S91) of washing a kitchen knife (1) with a post-washing device (91); A laser marking step (S92) of marking the cutting surface (401) of a kitchen knife (1) with a laser using a laser marking device (92); and A method for manufacturing a flexible kitchen knife with excellent wear resistance, characterized by including a packaging step (S93) of packaging a kitchen knife (1).

3. In paragraph 1, The above flexible knife dot coating step (S30) is Surface cleaning step (S31) of removing residues from the side surface of the target knife (112) and removing impurities through sanding; A primer fluorine-titanium coating step (S32) for coating the surface of the target knife (112) with a primer coating agent through firing; and It includes a dot ball fluorine-titanium coating step (S33) for coating a dot ball coating agent through firing on the surface of a processing target knife (112) coated with a primer coating agent. The primer coating agent comprises 100 wt% of fluororesin and 1 to 2 wt% of titanium, A method for manufacturing a flexible kitchen knife with excellent wear resistance, characterized in that the dot ball coating agent comprises 100 weight ratio of fluororesin and 1 to 5 weight ratio of titanium.

4. In paragraph 3, The above primer fluorine-titanium coating step (S32) is A primer spraying step (S321) of spraying a primer coating agent onto the side surface of a cutting tool (112) to be processed using a primer spraying device (511); A primer furnace heating step (S322) in which a processing target knife (112) to which a primer coating agent has been applied is heated and fired in a primer furnace (512); and Includes a primer drying step (S323) for drying and cooling the heated processing target knife (112), The above dot ball fluorine-titanium coating step (S33) is A dot ball spraying step (S331) of spraying a dot ball coating agent using a dot ball spraying device (521) onto the side surface of a processing target knife (112) on which a primer coating agent is coated to form a primer coating layer (501); A dot ball furnace heating step (S332) in which a processing target knife (112) to which a dot ball coating agent is applied is heated and fired in a dot ball furnace (522); and A method for manufacturing a flexible kitchen knife with excellent wear resistance, characterized by including a dot ball drying step (S333) for drying and cooling a heated processing target knife (112).

5. In paragraph 3, The above flexible knife dot coating step (S30) is It further includes a top fluorine coating step (S34) of coating a top coating agent including a fluorine resin through firing on the surface of a processing target knife (112) coated with a dot ball coating agent. The above top fluorine coating step (S34) is A top coating spraying step (S341) of spraying a top coating agent using a top coating spraying device (531) onto the side surface of a cutting tool (112) on which a primer coating layer (501) and a dot ball coating layer (502) are formed; A top coating furnace heating step (S342) in which a processing target knife (112) to which a top coating agent has been applied is heated and fired in a top coating furnace (532); and A method for manufacturing a flexible kitchen knife with excellent wear resistance, characterized by including a top coating drying step (S343) for drying and cooling a heated processing target knife (112).

6. In paragraph 1, After machining the blade portion of the knife to be processed (112), a flexible knife PVD knife coating step (S50) is performed to form a PVD coating layer (8) on the knife to be processed (112); A coating blade processing step (S70) for removing the clumped coating portions among the thickly coated coating layer (8) on the blade (402) while the entire blade (112) is coated; and A method for manufacturing a flexible kitchen knife with excellent wear resistance, characterized in that it includes a coating blade-leather removal step (S80) for removing coating burrs on the blade (402) of a kitchen knife (1) by using a coating blade leather removal device (46) for a coated kitchen knife (1).

7. In paragraph 6, The above flexible knife PVD coating step (S50) is Coating step (S54) that constitutes a PVD coating process for the knife to be processed (112); and Includes a post-coating inspection step (S55) for inspecting the coated processing target knife (112), The above coating step (S54) is A coating heating step (S541) of heating a processing target knife (112) to be coated using a coating heating device (25); A coating step (S542) of forming a PVD coating layer (8) on a processing target knife (112) using a PVD coating device (26); It includes a post-coating cooling step (S543) of cooling the processing target knife (112) that has gone through the coating process using a post-coating cooling device. The coating material of the above PVD coating layer (8) includes any one of TiN, TiCN, CrN, TiAlN, AlTiN, ZrN, and TiC. The above post-coating inspection step (S55) is A post-coating inspection step (S551) that includes a visual inspection and a microscopic inspection of the coated processing target knife (112); Coating hardness measurement step (S552) of measuring the hardness of the coating layer using a hardness measurement device for the coated processing target knife (112); A coating film thickness measurement step (S553) for measuring the film thickness of a coating layer on a coated processing target knife (112) using a film thickness measurement device; and A method for manufacturing a flexible kitchen knife with excellent wear resistance, characterized by including a coating adhesion measurement step (S554) of measuring adhesion to a coating layer using an adhesion measurement device for a coated processing target knife (112).

8. In paragraph 6, The above coating blade processing step (S70) is A coated knife surface-leather polishing step (S71) for polishing the coating layer of the blade surface (401) of the side of the blade body (4) of the kitchen knife (1) using a coated blade leather polishing device (45); and A method for manufacturing a flexible kitchen knife with excellent wear resistance, characterized in that it includes a coated blade-leather polishing step (S72) of polishing the coating layer of the blade (402) of a kitchen knife (1) using a coated blade leather polishing device (45).

9. A cutting device (11) for cutting the fabric that forms the blade's original steel plate; A knife-shaped pressing device (12) that cuts the cut cutting knife material (111) into a knife shape; A heat treatment device (13) for heat treating the cut target knife (112); A cooling device (14) for cooling the heat-treated target knife (112); A diamond grinding roll device (17) for grinding a knife to be processed (112); A polishing device (18, 19) for polishing a knife to be processed (112); A blade grinder (21) for grinding the blade portion of a knife to be processed (112); A blade burr remover (22) for removing burrs from the blade portion; and A sandpaper grinding device (41) for grinding a handle (2) attached to a knife to be processed (112); A manufacturing system for a flexible kitchen knife with excellent wear resistance, characterized by including:

10. In paragraph 9, Coating heating device (25) for heating the target knife (112); A coating device (26) that forms a PVD coating layer (8) by coating the surface of a heated workpiece target knife (112); A post-coating cooling device that cools the target knife (112); A hardness measuring device for measuring the hardness of a coated kitchen knife (1); A film thickness device for measuring the thickness of the coating film of a kitchen knife (1); Adhesion measuring device for measuring the adhesion of the coating film of a kitchen knife (1); A coating blade leather polishing device (45) for polishing the coating layer of the blade portion of a kitchen knife (1); and A kitchen flexible knife manufacturing system with excellent wear resistance, characterized by including a coated blade leather burr removal device (46) that removes burrs attached to the blade portion of a kitchen knife (1).

11. On the side surface of the polished kitchen knife (1), a fluorine coating layer (5) consisting of a primer coating layer (501), a dot ball coating layer (502), and a top coating layer (503) is formed. As the upper layer of the fluorine coating layer (5), a PVD coating layer is formed. The above kitchen knife (1) is a flexible kitchen knife with excellent wear resistance, characterized by being made of a material that bends laterally.

12. In paragraph 11, The above fluorine coating layer (5) is composed of a primer coating layer (501) formed by firing a primer coating agent, a dot ball coating layer (502) formed by firing a dot ball coating agent on top of the primer coating layer (501), and a top coating layer (503) formed by firing a top coating agent on top of the dot ball coating layer (502). The above primer coating layer (501) is formed by firing a primer coating agent containing 100 weight ratio of fluororesin and 1 to 2 weight ratio of titanium, The dot ball coating layer (502) is formed by firing a dot ball coating agent containing 100 weight ratio of fluororesin and 1 to 5 weight ratio of titanium. A flexible kitchen knife with excellent wear resistance, characterized in that the top coating layer (503) is formed by firing a top coating agent including a fluororesin.

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