KR20090004784A - The manufacturing method of shoes and the sole of shoes with ventilating function attached hollow-cushion-protrusion - Google Patents

Abstract

A shoe sole and a manufacturing method of shoes having the same are provided, which reduce the cost and time for manufacturing the shoe sole. A manufacturing method of a shoe sole comprises: a step for putting the cushion protrusion material solution into a partition forming groove and a protrusion forming groove(24) of a lower mold; a step for putting the floor material into the floor material receiving groove(12) of the upper mold(10) and making contact with the lower mold; and a step for forming the partition and the hollow cushion protrusion into one body in the upper side of the floor material.

Description

THE MANUFACTURING METHOD OF SHOES AND THE SOLE OF SHOES WITH VENTILATING FUNCTION ATTACHED HOLLOW-CUSHION-PROTRUSION}

The present invention relates to a shoe sole with a hollow cushioning protrusion and a method for manufacturing a shoe having the shoe sole, and more particularly, by attaching a hollow cushioning protrusion having different materials and physical properties to an upper surface of a preformed outsole or a non-breathable taxon. The present invention relates to a shoe sole having a hollow cushioning protrusion having excellent absorption and restoring force, and a method of manufacturing a shoe having the shoe sole.

Normal shoes are made of upper, midsole, and sole, and the upper protects the foot by covering the instep and foot, and the midsole has the external force as the shoe lands on the ground when walking or running. The midsole absorbs the shock and blocks the shock transmitted to the body.The sole is divided into two structures, such as slipping and grounding, which prevents the wear from being easily worn when landing on the ground. It can be said.

Shoes of the injection molding method that is widely used at present has the advantage of low defect rate and low labor cost, but the installation cost is excessively high, there is a problem of high mold cost.

Nevertheless, the reason why the injection molding method is used for shoes such as safety shoes, combat shoes, hiking boots, and shoes is that the design of the sole which is injection molded is not fashionable and can be used continuously for a while, so there is no cost burden due to the replacement of the mold. .

However, the shoes by the injection molding method must be embedded while being molded with the sole so that the cushioned member can be mounted inside the sole, the problem of the injection molding method is that the mounted member has a high injection pressure or foaming. Even if the circular deformation occurs due to the expansion force is expanded, the cushion function is not properly achieved even if installed, so far, the shoes produced by the injection molding method could not simultaneously exhibit the effects of the cushion and the ventilation function.

In addition, in general, the shoe sole is mainly foam-molded with polyurethane, and in order to prevent slippage, which is a disadvantage of the polyurethane, the sole is manufactured by attaching the sole to the bottom of the upper with an adhesive by preforming the rubber or synthetic rubber into a specific shape. The manufacturing process of bonding the sole has a problem that the manufacturing time and labor costs are expensive.

Accordingly, an object of the present invention is to provide a method for manufacturing a shoe sole with a hollow cushioning protrusion which can integrate a hollow cushioning protrusion having excellent shock absorbing effect on the upper surface of a flooring material consisting of an outsole or a non-breathable cushion.

Another problem to be solved by the present invention is to provide a manufacturing method that can complete the shoe by the outsole and injection molding non-breathable cushion attached to the hollow cushioning projection excellent in shock absorption effect.

Technical problems of the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

Method for manufacturing a shoe sole with a hollow cushioning projection according to an embodiment of the present invention for achieving the above technical problem, the upper mold and the bottom receiving groove is formed in the bottom surface, the protruding surface protruding upward to the upper surface, the protruding surface Of the shoe sole to which the hollow cushioning projection is attached using a partition molding groove partitioning the front space portion and the rear space portion, and a lower mold having at least one protrusion molding groove at one side or both sides of the front space portion or the rear space portion. In the manufacturing method, the filling step of filling the expandable cushioning projection material solution in the partition wall forming grooves and the projection molding groove of the lower mold, and inserting a bottom material into the bottom material receiving groove of the upper mold and the lower mold and each other The mold closing step for a complete interview, and the cushion stone filled in the partition molding groove and the protrusion molding groove of the lower mold. Foaming the base material solution comprises a foaming step of integrally forming the partition and the hollow cushioning projections on the upper surface of the flooring.

The flooring may be made of an outsole that forms the bottom surface of the shoe.

The outsole may be made of a non-foaming material.

The cushion protrusion material solution may be made of a polyurethane foam.

On the other hand, the manufacturing method of a shoe sole with a hollow cushioning projection according to another embodiment of the present invention, the upper mold and the bottom surface is formed with a bottom receiving groove, the projecting surface protruding upward to the upper surface, the front space portion And a partition wall forming groove for partitioning the rear space portion, an edge wall forming groove formed along the edge of the protruding surface, and a lower mold having at least one protrusion forming groove at one side or both sides of the front space portion or the rear space portion. In the manufacturing method of a shoe sole with a hollow cushion protrusion, the filling step of filling the foam-expandable cushioning projection material solution in the partition wall forming groove, the edge wall forming groove and the projection forming groove of the lower mold, the bottom receiving groove of the upper mold Inserting a non-breathable taxon into the mold and closing the mold in such a way that the lower mold is completely interviewed with each other; A foam molding step of foaming the cushion protrusion material solution filled in the mold groove, the edge wall forming groove and the protrusion forming groove to form a partition, the edge and the hollow cushion protrusion on the upper surface of the non-breathable taxon, and the hollow foamed on the upper surface of the flooring material. And a demolding step of demolding the sole formed by attaching the cushion protrusion from the upper mold and the lower mold.

On the other hand, a method of manufacturing a shoe having a shoe sole with a hollow cushioning protrusion according to an embodiment of the present invention, the upper coupling step of attaching the end of the upper surface surrounding the new bone on the edge of the bottom edge of the non-breathable taxiseon, the The upper mold joining step of combining the upper mold with the central portion open to the left and right sides of the upper, and the pre-processed outsole into the lower mold, and the polyurethane foam is injected into the upper surface of the outsole, the new bone is coupled After the upper is placed on the upper surface of the outsole to combine the upper mold, and further comprises a polyurethane foaming step of forming a non-breathable taxon and outsole integrally by foaming the polyurethane foam.

As described above, according to the method of manufacturing a shoe sole with a hollow cushioning projection according to the present invention, the hollow cushioning projections are manufactured separately, so that a separate bonding process for installing on the upper surface of an outsole or a non-breathable cushion is unnecessary and the manufacturing time is shortened. There is an advantage that can provide an inexpensive shoe sole.

In addition, according to the method of manufacturing a shoe sole with a hollow cushioning protrusion according to the present invention, the outsole or non-breathable cushioning becomes a flooring material excellent in landing and resilient elasticity, and the shock absorbing effect by the hollow cushioning protrusions attached to the upper surface of the outsole. There is an effect that can provide a shoe sole.

In addition, according to the method of manufacturing a shoe having a shoe sole with a hollow cushioning protrusion according to the present invention, in the shoe manufacturing method of the injection method, it is possible to provide a shoe provided with a non-breathable cushion having excellent shock absorption power integrally with the outsole. There is.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the present embodiments are intended to complete the disclosure of the present invention, and the general knowledge in the art to which the present invention pertains. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

1 is a view for explaining the manufacturing process of a shoe sole with a hollow cushioning projection according to an embodiment of the present invention.

As shown in Figure 1, the manufacturing method of the shoe sole is attached to the hollow cushioning projection 200 according to an embodiment of the present invention is manufactured using the upper mold 10 and the lower mold 20 as a shoe mold. Here, the upper mold 10 is a mold for pressing the flooring material, and the lower mold 20 is a mold for molding the hollow cushion protrusion 200 on the flooring material.

The upper mold 10 is formed with a bottom receiving groove 12 for receiving the flooring in advance to the bottom surface. The bottom receiving groove 12 may be formed with a carving groove (12a) matching the bottom pattern of the flooring (110).

The lower mold 20 has a molding space portion 22 for receiving a flooring material, and a protrusion molding groove 24 and a partition wall receiving groove in which the hollow cushion protrusion 200 is formed inside the molding space portion 22. 26a is formed. The protrusion shaping groove 24 has a protrusion bar 24b formed in the center of the cylindrical groove 24a in order to foam the hollow cushion protrusion 200. Therefore, when the protrusion forming groove 24 is filled with a cushioning material solution such as a polyurethane resin (200A) and expands, the hollow of the hollow cushion projection (200) is formed in the place where the protrusion bar (24b) was.

In the manufacturing method of the shoe sole attached to the hollow cushion protrusion 200 according to the present invention using the manufacturing mold made as described above, the flooring material may be made of a preformed outsole 110 or non-breathable taxon 120 , First, the manufacturing method of the sole when the flooring material is the outsole 110 will be described.

As shown in (a) of FIG. 1, the protrusion forming groove 24 of the lower mold 20 is filled with a cushioning material solution 200A in a gel state that can be expanded therein.

Then, as shown in Figure 1 (b), the top surface of the outsole 110 is turned upside down and then the upper mold 10 on the lower mold 20 to completely interview each other to close the mold.

Thereafter, heat and pressure are applied to the mold by a press to expand and expand the cushion protrusion material solution 200A. At this time, the heat of the mold transferred from the outside to the mold is usually about 60 ℃ to 70 ℃, this heat is a molding temperature that is generally widely used to manufacture the outsole 110 of the shoe using a foam material. As heat and pressure are applied to the entire mold, the protrusions 24 and the partition wall forming grooves 26b are cross-linked and expanded by heat of the upper mold 10 and the lower mold 20 and chemical reaction of the cushion protrusion material solution 200A. ) Is filled tightly, and as shown in (c) of Figure 1, the expansion foam expansion hollow cushion projection 200 is to be integrally bonded as a body to the upper surface of the outsole 110.

Thereafter, the shoe sole formed by attaching the hollow cushion protrusion 200 foamed to the upper surface of the outsole 110 is detached from the upper mold 10 and the lower mold 20 to complete the shoe sole.

Here, if the protrusion forming groove 24 is filled with a cushioning projection material solution (200A) of the foam material and the outsole 110 is made of a non-foaming material, the material and physical properties are different and the hollow cushion integrated with the outsole 110 There is a feature that makes it possible to form the projections (200). That is, the material of the outsole 110 is a variety of materials, such as TPR, PVC, PU, EVA, which is a rubber material and a synthetic resin-based compounded in a suitable ratio of natural rubber, synthetic rubber, and a variety of things that fit the function and cost of shoes Applicable

On the other hand, if the outsole 110 is made of a rubber material made of a non-foaming material that requires a function such as landing force, abrasion resistance, and the like, the hollow cushion projections 200 are absorbed when the external force is transmitted to absorb the impact, the external force When this is released, the compressed hollow cushion protrusions 200 are returned to the original state at the same time, and a repulsive elasticity is generated to push up the sole, resulting in propulsion.

As such, according to the method of manufacturing a shoe sole with a hollow cushioning protrusion according to the present invention, in installing the hollow cushioning protrusion 200 on the upper surface of the outsole 110, the hollow cushioning protrusions 200 are separately manufactured to separately outsole. There is no need for a separate bonding process to be installed on the upper surface of 110, thereby reducing the manufacturing time there is an advantage that the manufacturing cost of the shoe sole can be lowered.

On the other hand, the manufacturing method of the shoe sole is attached to the hollow cushioning projections 200 according to another embodiment of the present invention, may further comprise the step of forming a non-breathable coating film 300 on the upper surface of the outsole 110.

The non-breathable coating film 300 acts as a blocking film to prevent the hydrolysis caused by moisture while preventing the air inside the hollow cushion protrusion 200 formed on the top surface of the outsole 110 to leak out. .

The non-breathable coating film 300 is made of a polyurethane resin material as a foamable material, but uses an ether type polyurethane resin having little hydrolysis and permeability. The non-breathable coating film 300 is vacuum-formed in advance in a standard and shape that can cover the hollow cushion projection 200 is bonded to the upper surface of the outsole 110.

In addition, the non-breathable coating film 300 is dissolved in a polyurethane resin, which is the same material as the hollow cushion protrusion 200, and then sprayed a liquid (hereinafter, referred to as a 'liquid') in which a concentration or viscosity is adjusted by mixing a pigment or a dye. It may be formed by a method or a process of applying to the outside of the hollow cushion protrusion 200 is completed by a brush. That is, after the liquid is applied to the inside or outside of the hollow cushion protrusion 200, the solvent contained in the liquid itself is dried and then a film is formed. The method of forming the non-breathable coating film 300 in this way has the advantage that the manufacturing process is simpler and lower the manufacturing cost than the method of attaching the vacuum molded sheet. In addition, the same materials are excellent in adhesive strength, and even when coated with a very thin film, the film forming power, tensile strength, and elasticity of the material itself are very excellent.

2 is a view for explaining the manufacturing process of the shoe sole with a hollow cushioning projection according to another embodiment of the present invention.

In the present embodiment, the flooring material 100 is characterized by consisting of a non-breathable taxon 120.

Therefore, the upper mold 10 has a difference that the engraving groove 12a is not formed in the bottom receiving groove 12 for receiving the non-breathable taxon 120. In addition, the lower mold 20 further includes a border wall forming groove 28 for forming the border wall 124 in the non-breathable taxon 120 in addition to the protrusion forming groove 24 and the partition wall forming groove 26b. There is a difference.

Injecting the liquid cushion protrusion material solution (200A) of the foam expansion and expansion into the protrusion forming groove 24, the partition wall forming groove (26b) and the edge wall forming groove 28 of the lower mold 20, and After inserting the non-breathable taxon 120 to the bottom receiving groove of the upper mold 10, the mold closing step of completely interviewing the lower mold 20 and each other, and foam expansion of the cushion projection material solution (200A) Consists of filling the space inside the mold tightly and the upper surface of the non-breathable taxon 120 is to produce a shoe sole formed with a foam expansion-expanded hollow cushion projection 200 and the partition wall 122 and the edge wall (124). Hollow cushion projections 200 are completed as described above to reduce the manufacturing cost and increase workability by eliminating the bonding process with the non-breathable taxon 120.

FIG. 3 is a view illustrating a process of manufacturing a finished shoe by integrating a pre-finished outsole 110 in an injection method to the non-breathable taxon 120 produced by FIG. 2.

As shown in (a) of FIG. 3, a plate-shaped auxiliary plate 400 or insole 500 having a check valve 410 is provided on the upper side of the non-breathable taxon 120 in which the hollow cushion protrusion 200 is formed. ) May be further provided.

First, the upper end of the upper bone (1) surrounding the new bone (3) is attached to the end of the upper bottom (1) is attached to the bottom edge edge of the non-breathable taxon 120.

Then, as shown in (b) of FIG. 3, the upper (1) in which the new bone (3) is coupled to prepare the upper mold 30 is combined with the upper mold 30 is cut in the center. That is, the upper (1) is coupled to prepare the upper mold 30, the center portion is opened to the left and right.

Then, the upper mold 30 is located on the upper surface of the lower mold 20, and then, as shown in (c) of FIG. 3 by foaming the polyurethane foam solution 210A injected into the mold. The shoe formed with the elastic window between the (1) and the outsole 110 is completed. In this case, the elastic window serves to assist the compression / expansion of the hollow cushion protrusions 200 of the non-breathable cushion 120 to be smooth, and in particular, the air inside the hollow of the hollow cushion protrusion 200 generates air pressure. It prevents overshrinkage and assists the original recovery.

At this time, a high pressure is generated when the foaming fluid 210A injected into the mold is foamed and expanded during the manufacturing process that is integrated with the outsole 110 and the upper bottom 1, so that the hollow cushion protrusions 200 of the present invention are high. Compression is further compressed by the pressure to the bottom of the new bone (3), and when the new bone (3) is removed, the compressed hollow cushioning projections 200 are returned to their original position while maintaining a circular shape.

Also in the shoe manufacturing method of this method is characterized in that it is possible to provide a shoe sole with a non-breathable cushion 120 attached to the hollow cushioning projection and the outsole 110 integrally.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

1 is a view for explaining the manufacturing process of the shoe sole attached to the hollow cushion protrusion on the outsole according to an embodiment of the present invention,

Figure 2 is a view for explaining the manufacturing process of the shoe sole attached to the hollow cushioning projections in a non-breathable taxi according to another embodiment of the present invention, and

3 is a view showing a process of manufacturing a completed shoe by integrating the pre-finished outsole in the injection method to the non-breathable taxon produced by FIG.

<Explanation of symbols on main parts of the drawings>

1: upper 3: new bone

10,30: upper mold 12: flooring receiving groove

12a: engraving groove 20: lower mold

22: molding space 24: projection molding groove

24a: groove 24b: protrusion rod

26a: bulkhead receiving groove 26b: bulkhead molding groove

28: edge wall forming groove 110: outsole

120: Breathable Taxon 122: Bulkhead

124: rim wall 200: hollow cushion projection

200A: cushioning material solution 210: elastic window

210A: polyurethane foam liquid 300: non-breathable coating film

400: auxiliary plate 410: check valve

500: insole

Claims (6)

An upper mold having a bottom receiving groove formed on its bottom surface, a protruding surface upwardly protruding upward, a partition wall forming a partition forming the front space portion and a rear space portion, and one or both sides of the front space portion or the rear space portion. In the manufacturing method of the shoe sole with a hollow cushion projection using a lower mold provided with at least one protrusion molding groove, Filling step of filling the foam expansion-expandable cushion projection material solution in the partition wall forming grooves and the projection molding groove of the lower mold, A mold closing step of inserting a bottom member into the bottom member receiving groove of the upper mold and then completely interviewing the lower mold and each other; and The foaming step of forming the partition and hollow cushion projections integrally on the upper surface of the flooring material by foaming the cushioning projection material solution filled in the partition molding groove and the projection molding groove of the lower mold Method for manufacturing a shoe sole with a hollow cushioning projection comprising a. In claim 1, The flooring material, A method of manufacturing a shoe sole with a hollow cushioning protrusion comprising an outsole forming a bottom of a shoe. In claim 1, The outsole is, Method of manufacturing a shoe sole with a hollow cushioning projection made of a non-foaming material. In claim 1, The cushion protrusion material solution, Method of manufacturing a shoe sole with a hollow cushioning projection made of a polyurethane foam. An upper mold having a bottom receiving groove formed on its bottom surface, a protruding surface protruding upwardly to an upper surface, a partition forming groove partitioning the protruding surface into a front space portion and a rear space portion, and an edge wall forming groove formed along an edge of the protruding surface. And in the manufacturing method of the shoe sole with a hollow cushion projection using a lower mold having at least one protrusion forming groove on one side or both sides of the front space portion or the rear space portion, A filling step of filling a foam-expandable cushioning projection material solution into the partition wall forming groove, the edge wall forming groove and the protrusion forming groove of the lower mold; Inserting a non-breathable taxon into the bottom material receiving groove of the upper mold and closing the mold to completely interview the lower mold and each other; and Foaming step of foaming the cushion projection material solution filled in the partition wall forming grooves, the edge wall forming grooves and the projection forming grooves of the lower mold to form the partition, the edge and the hollow cushioning projections integrally on the upper surface of the non-breathable taxon. Method of manufacturing a shoe sole with a hollow cushioning projection comprising a. In the manufacturing method of completing the shoe with the upper and the outsole using the manufacturing method of the shoe sole attached to the hollow cushion projection of claim 5, An upper coupling step of attaching the end of the upper bottom surrounding the new bone to the edge of the bottom border of the non-breathable taxon, An upper mold coupling step of coupling an upper mold whose center portion is opened to the left and right of the outer surface of the upper, and Inject the pre-processed outsole into the lower mold, inject the polyurethane foam to the upper surface of the outsole, place the upper with the new bone combined on the upper surface of the outsole to bind the upper mold, and then foam the polyurethane foam Polyurethane foaming step to form a non-breathable taxon and outsole integrally Method of manufacturing a shoe having a shoe sole with a hollow cushioning projection comprising a.

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