KR102488093B1 - Molding device for inner tread insert shoe and manufacturing method of shoe using the same - Google Patents

Abstract

The present invention relates to a molding device for inner tread plate-insert shoes that can effectively insert an inner tread plate between an outsole and a midsole constituting a shoe sole, and a method for manufacturing shoes using the same. The present invention comprises: a lower mold (10) in which an outsole lower mold (11) for forming the lower shape of an outsole (1) of a shoe is formed; a mid-mold (20) which is molded to the lower mold (10) and has an outsole upper mold (21) for forming the upper shape of an outsole (1) on a bottom surface, wherein a midsole lower mold (22) for forming the bottom shape of a midsole (2) is formed on an upper surface, and an insert groove (23) is formed to accommodate an inner tread plate (3) within the midsole lower mold (22); and an upper mold (30) which is molded to the mid-mold (20) and includes a midsole upper mold (32) for molding the upper shape of the midsole (2) on a bottom surface. Using the molding device for inner tread plate-insert shoes and the method for manufacturing shoes using the same, the outsole and the midsole are compositely molded in each mold that is arranged in multiple layers, and the structure is simply changed to jointly mold the outsole and midsole. Thus, the manufacturing process of shoe soles with an inner tread plate inserted is greatly reduced, and it is possible to maintain the quality of the inserted inner tread plate due to mass production.

Description

Molding device for inner tread insert shoe and manufacturing method of shoe using the same {Molding device for inner tread insert shoe and manufacturing method of shoe using the same}

The present invention relates to a mold device for insert shoes with inserts and a method for manufacturing shoes using the same. In more detail, the mold device for inserts inserts shoes that can effectively insert an insert plate between an outsole and a midsole constituting the sole of a shoe, and It relates to a method for manufacturing shoes using the same.

Shoes for safety boots usually consist of an upper and a sole, and the outsole consists of an outsole, an inner sole, and a midsole. At this time, the outsole is made of rubber material to prevent slipping and wear resistance in contact with the ground. While finishing the upper surface, the inner sole of the shoe is formed.

Looking at the shoe sole manufacturing method, the outsole and midsole are manufactured separately, and then the insole is bonded to the outsole with a bond, and then the midsole is bonded. , There is a problem that the inner tread plate shakes in the sole due to a gap between the inner tread plate and the shoe sole, and the shoe manufacturing cycle time is delayed due to poor adhesion and adhesion time.

Accordingly, in Patent Registration No. 10-1916561 disclosed in the prior art, a lower mold having a cavity formed therein, a first upper mold having a first molding protrusion formed on a lower surface facing the lower mold and remaining inside the cavity, and the lower mold A second upper mold having a second molding protrusion formed on the lower surface thereof while facing the cavity, a hinge shaft portion hingedly connected to one side of the first upper mold and the second upper mold, and a central shaft portion rotatable with one side of the lower mold It includes a connecting member provided, and the hinge shaft portion enables rotation in the opposite direction with the back between the first upper mold and the second upper mold and enables the first upper mold and the second upper mold to be separated and replaced, respectively, The central shaft portion enables the first and second upper molds to rotate upward from one side of the lower mold in a clockwise or counterclockwise direction, and after primary molding with the first upper mold in the lower mold, the connecting member is used. Thus, the second upper mold can be rotated to face the lower mold for secondary molding, and a technique in which a plurality of supports protrude from the inner cavity of the lower mold has been previously suggested.

In addition, in another prior art, Patent Registration No. 10-2365049, a lower mold having a molding groove for forming an outsole having an insert area therein; an intermediate mold having one side rotatably coupled to the lower mold and having a through hole formed therein in a shape corresponding to a molding groove of the lower mold; an upper mold spaced apart from the upper part of the middle mold and having a molding protrusion inserted into the molding groove of the lower mold; an adhesive sheet disposed between the lower mold and the middle mold; an adsorbing means for adsorbing the adhesive sheet to an insert region of an outsole placed in a molding groove of the lower mold; a PU liquid injection means for injecting PU (polyurethane) liquid into the insert region of the outsole to which the adhesive sheet is adsorbed; A technology including a foam sheet formed to cover the upper portion of the insert region of the outsole into which PU liquid has been injected has been previously registered.

However, the prior art attempts to manufacture a shoe sole integral with the outsole by replacing the upper mold with the lower mold, but since the outsole molding step and the midsole molding step are separated and performed step by step with a time difference, the cycle of the manufacturing process Time was delayed, and in particular, there was a problem that insert molding could not be done integrally between the outsole and the midsole.

KR 10-1916561 B1 (2018.11.01.) KR 10-2365049 B1 (2022.02.15.)

In the present invention, a new technology has been invented to solve all the problems of the prior art, and in one mold assembly, the inner plate is first put into a mold for forming a midsole, then the outsole and the midsole are separately molded, and then in the middle It is an object of the present invention to provide a shoe sole in which a structure is improved so as to jointly mold an outsole and a midsole by separating and taking out a positioned mold and inserting a shoe sole and a shoe manufacturing method using the same.

As a specific means for solving the above problems of the present invention, in the present invention, a mold device for an insert shoe with an insert is configured, but a lower mold (10) in which an outsole lower mold (11) is formed for forming the lower shape of the outsole (1) of the shoe. ); It is molded to the lower mold 10, an outsole upper mold 21 for forming the upper shape of the outsole 1 is formed on the bottom surface, and a midsole lower mold 22 for forming the lower shape of the midsole 2 on the upper surface A mid mold 20 in which is formed and an insert groove 23 is formed so that the inner foot plate 3 is accommodated in the midsole lower mold 22; An upper mold 30 that is molded to the mid mold 20 and has a midsole upper mold 32 formed on the bottom surface of the midsole upper mold 32 for forming the upper shape of the midsole 2,

The outsole upper and lower molds 11 and 21 and the midsole and lower molds 22 and 32 formed in a multi-layered state in which the lower mold 10, the middle mold 20, and the upper mold 30 are molded together It is provided so that the outsole 1 and the midsole 2 can be molded at the same time by using, and the upper and lower molds 10 and 30 are molded together with the mid mold 20 removed, so that the outsole 1 and the midsole are molded together. (2) It is characterized in that it is provided so as to be bonded and molded in a state in which the inner answer plate (3) is inserted so as to be in close contact with each other.

In addition, the method of manufacturing shoes using the mold device of the insert shoe insert according to the present invention includes the step of inserting the insert plate 3 into the insert groove 2a formed on the upper part of the mid mold 20 (S10) ; A rubber material inputting step (S20) of injecting a midsole rubber material into a mold between the upper mold 30 and the middle mold 20 and injecting an outsole rubber material into the mold between the mid mold 20 and the lower mold 10 ; The first row of molding the lower mold (10), the middle mold (20), and the upper mold (30) and performing primary thermal molding to simultaneously mold the outsole (1) and the midsole (2) into which the inner foot plate (3) is inserted. molding step (S30); a mid-mold separation step (S40) of separating the mid-mold 20 after the first thermal forming step (S30); And the upper and lower molds (10) (30) are molded and the outsole (1) and the midsole (2) are placed in close contact with the inner foot plate (3), and secondary thermal molding is performed to form the outsole (1) and the midsole (2). ) is integrally bonded to the second thermal forming step (S5); characterized in that it comprises a.

According to the specific means for solving the above problems, the present invention is complexly molded in each mold in which the outsole and midsole are knitted in multiple layers, and then the structure is improved to bond and mold the outsole and midsole by simply changing the mold structure. The process of manufacturing shoe soles in which the plate is inserted can be greatly simplified.

In addition, it has the effect of maintaining the same quality of inserts for inboard inserts according to mass production.

1 is a configuration diagram showing a step-by-step process for manufacturing a shoe sole using a mold device for an insert shoe insert according to an embodiment of the present invention.
Figure 2 is a block diagram showing the disassembly of the mold apparatus of the insert shoe insert shoe according to an embodiment of the present invention.
Figure 3 is a configuration diagram showing a variable hinge module of the mold apparatus of the insert shoe insert shoe according to an embodiment of the present invention.
Figure 4 is a block diagram showing the operating state of the mold device of the inner tread plate insert shoe step by step according to an embodiment of the present invention.
Figure 5 is a flow chart schematically showing a method for manufacturing shoes using a mold device for insert shoe inserts according to the present invention.

Hereinafter, the present invention will be described in more detail according to specific embodiments of the accompanying drawings. Technical terms used in this specification are terms selected in consideration of functions in embodiments, and the meanings of the terms may vary depending on specific embodiments of the invention. And throughout the specification, when a part is said to be "connected" to another part, this includes not only the case of being "directly connected" but also the case of being "indirectly connected" with another member in between. do.

As used herein, the terms about, substantially, etc., of degree, are used at or close to the value when manufacturing and material tolerances inherent in the referenced meaning are given, and are used in an accurate or Absolute numbers are used to prevent exploitation by unscrupulous infringers of the stated disclosure.

1 is a block diagram showing a step-by-step process for manufacturing shoe soles using a mold device for insert shoes for insert shoes according to an embodiment of the present invention, and FIG. 2 is a mold device for insert shoes for insert shoes according to an embodiment of the present invention. It is a configuration diagram showing an exploded view.

The present invention relates to a mold device for insert shoes with inner padding and a method for manufacturing shoes using the same, which is formed by complexly molding an outsole and a midsole in a multi-layered mold, and then simply changing the mold structure to obtain the outsole and midsole. The structure is improved to bond and mold, greatly simplifying the process of manufacturing shoe soles into which inserts are inserted, and in addition to maintaining uniform quality of inserts for inserts according to mass production, the lower mold (10), the middle mold (20) and the upper mold ( 30) is composed of one mold assembly.

First, in the lower mold 10 according to the present invention, an outsole lower mold 11 for forming the lower shape of the outsole 1 of the shoe is formed.

The lower mold 10 is a mold for molding the outsole 1 of a shoe sole by being molded with a middle mold 20 described later, and is heated by a heat source including a hot wire and steam to form an upper and lower mold 11 on the outsole. It is provided to thermoform the rubber material accommodated in (21).

The mid mold 20 according to the present invention is molded to the lower mold 10, an outsole upper mold 21 for forming the upper shape of the outsole 1 is formed on the bottom surface, and the upper shape of the mid sole 2 bottom shape is formed on the upper surface. A midsole lower mold 22 for molding is formed, and an insert groove 23 is formed so that the inner answer plate 3 is accommodated in the midsole lower mold 22.

The middle mold 20 is provided so that the bottom surface is molded with the lower mold 10 to mold the outsole 1, and the upper surface is molded with the upper mold 30 to mold the midsole 2.

In addition, the middle mold 20 has handles installed on both sides and is separated from the lower mold 10, so that the lower mold 10, the middle mold 20, and the upper mold 30 are combined to form an outsole (1). ) and the midsole 2, or separate the mid mold 20 and combine only the upper and lower molds 10 and 30 to jointly mold the outsole 1 and the midsole 2.

The insert groove 23 formed in the lower mold 22 of the midsole has the same shape as the outer shape of the inner tread plate 3, so that the inner tread plate 3 is stably fixed in place during the high-pressure molding process of the outsole using a rubber material. let it be

In addition, as the insert groove 23 accurately positions the inner foot plate 3 in the center between the outsole 1 and the midsole 2, the insert quality of the foot board 30 is not affected by the skill level of workers during mass production. This has the advantage of being uniform.

On the other hand, the depth of the insert groove 23 may be formed in a reduced size compared to the thickness of the inner answer plate (3). In this case, as a portion of the upper region of the inner foot plate 30 is molded to be insert-molded in the mid sole 2, the binding force between the mid sole 2 and the inner foot plate 30 is firmly maintained.

In addition, as shown in FIG. 2 , an insert protrusion 21a may be formed on the outsole upper mold 21 at a position corresponding to the insert groove 23 of the mid mold 20 .

The insert protrusion 21a is provided to form an inner groove 1a in which the inner tread plate 3 is accommodated on the upper surface of the outsole 1. Accordingly, when the upper and lower molds 10 and 30 are molded together to mold the outsole 1 and the midsole 2 together, the inner tread plate 3 integrally molded with the midsole 2 is attached to the inner groove 1a. Interlocked in the received state, it can be inserted molded tightly without gaps.

The upper mold 30 according to the present invention is molded to the mid mold 20, and a mid sole upper mold 32 for forming the upper shape of the mid sole 2 is formed on the bottom surface.

The upper mold 30 according to the present invention is characterized in that it is selectively molded to the lower mold 10 or the middle mold 20, and for this purpose, the upper mold 30 is molded by a variable hinge module 34 It is provided so that the height is variable.

Figure 3 is a configuration diagram showing a variable hinge module in the mold device of the insert shoe insert of the present invention, the variable hinge module 34, the support shaft (34a) formed in the transverse direction, and the upper mold (30) ) and a lift arm 34c having one end mounted on the other end and a long hole-shaped guide rail 34b that is moved in the longitudinal direction along the support shaft 34a.

Accordingly, when the lower mold 10, the middle mold 20, and the upper mold 30 are molded, the guide rail 34b is moved upward along the support shaft 34a, and is moved between the upper and lower molds 10 and 30. When the upper and lower molds 10 and 30 are molded with the gap widened and the mid mold 20 removed, the guide rail 34b moves downward along the support shaft 34a, and the upper and lower molds ( 10) The interval between (30) can be reduced.

More specifically, as shown in FIG. 3 (a), at first, the lower mold 10, the middle mold 20, and the upper mold 30 are formed in a multi-layer upper and lower molds 11 and 21 And it is provided so that the outsole 1 and the midsole 2 can be molded simultaneously using the upper and lower molds 22 and 32 of the midsole.

And, as shown in FIG. 3 (b), if the mid-mold 20 is separated and removed from the mold module, and then the upper and lower molds 10 and 30 are molded together to bond and mold the outsole 1 and the midsole 2, the outsole Between (1) and the midsole (2), the inner tread plate (3) is firmly inserted.

In this way, while the height of the upper mold 30 is adjusted by the variable hinge module 34, the structure is improved to selectively use the mid mold 20, and after simultaneously molding the outsole 1 and the midsole 2, the mid There is an advantage in that the outsole 1 and the midsole 2 are bonded and molded by a simple operation of separating only the mold 20 to continuously perform the shoe sole manufacturing process of the safety shoe in which the inner tread plate is inserted.

As shown in FIG. 2 , the upper mold 30 of the present invention may be composed of a combination of an outer body 30A and an inner body 30B.

The outer body 30A is molded to the upper surface of the mid-mold 20, and a molding hole 32a passes through the center to form a side area of the upper midsole mold 32. In addition, the inner body 30B is hinged to the outer body 30A to perform molding and mold opening operations, and engages with the molding hole 32a to form the upper surface area of the upper mold 32 of the midsole.

Accordingly, the upper and lower molds 10 and 30 are molded and the second heat molding is performed in a state in which the inner tread plate 3 is placed in close contact between the outsole 1 and the midsole 2, and then the upper and lower molds ( 10) There is an advantage in that the shoe sole can be easily taken out through the mold opening operation (30) and the mold opening operation of the outer body (30A) and the inner body (30B).

In addition, a plurality of core pins 32b may be formed at one end of the bottom surface of the inner body 30B.

In the case of safety boots, a toe cap is formed to protect the toe, and when a core pin 32b is protruded from the bottom of the shoe toe cap, the core pin 32b is inserted into the fastening groove 2a formed on the upper surface of the midsole 2. The core pin 32b is engaged to fix the toecap of the shoe, thereby increasing convenience in manufacturing the shoe.

The assembly positions of the lower mold 10, the middle mold 20, and the upper mold 30 configured as described above are determined by pins, holes, and negative and embossed coupling parts, respectively, and may be guided to be molded in place.

Figure 4 is a configuration diagram showing the operating state of the mold apparatus of the insert shoe insert shoe of the present invention step by step, Figure 5 is a flow chart schematically showing a method of manufacturing shoes using the mold apparatus of insert shoe insert shoe according to the present invention , A method for manufacturing shoes using a mold device including a lower mold 10, a mid mold 20, and an upper mold 30 together with drawings will be described.

1. Step of inputting my answer board (S10)

The multi-layer forming step (S10) according to the present invention is a step of inserting the inner answer plate 3 into the insert groove formed on the upper part of the mid-mold 20.

The inner answer plate 3 is formed to fit the size of the insert groove 2a and is fixed to a pre-designed position without changing its position even when exposed to high pressure during the midsole molding process.

2. Rubber material input step (S20)

In the rubber material input step (S20) according to the present invention, the midsole rubber material is injected into the mold between the upper mold 30 and the middle mold 20, and the midsole rubber material is injected into the mold between the mid mold 20 and the lower mold 10. Inject the outsole rubber material.

Since this is done after the step of inserting the inner tread plate (S10), the midsole rubber material is disposed on the upper part of the inner tread plate 3.

3. The first thermoforming step (S30)

In the first thermoforming step (S30) according to the present invention, the lower mold 10, the middle mold 20, and the upper mold 30 are molded together, and the outsole 1 and the inner foot plate 3 are formed by first thermoforming. This step is to mold the inserted midsole 2 at the same time.

In this step, the outsole 1 and the midsole 2 are simultaneously molded in an independent space using one mold assembly composed of a combination of the lower mold 10, the mid mold 20, and the upper mold 30. Provided, At this time, a part of the inner tread plate 3 is insert-molded in the midsole 2.

And, the inner groove (1a) is formed on the upper surface of the outsole (1), when bonding the outsole (1) and the midsole (2), it may be provided so that the inner plate (3) is inserted into the inner groove (1a).

4. Mid mold separation step (S40)

In the middle mold separation step (S40) according to the present invention, after the first thermoforming step (S30), only the mid mold 20 is separated from the mold assembly and taken out.

5. Second thermal forming step (S5)

In the second heat forming step (S5) according to the present invention, the upper and lower molds 10 and 30 are molded together so that the inner tread plate 3 is positioned between the outsole 1 and the midsole 2, A step of integrally bonding the outsole (1) and the midsole (2) around the insole (3) by thermally forming, and at this time, the insole (3) inserted between the outsole (1) and the midsole (2) is integrally is molded into

After the second thermal forming step (S5), the upper and lower molds 10 and 30 are opened to take out the finished shoe sole product in which the inner tread plate 3 is inserted.

The second thermal forming step (S5) is a step for integrally bonding the separately molded outsole 1 and midsole 2, and if that point is too early, the outsole 1 and the midsole 2 are formed properly. In the outsole that is finally produced, there are many defects in which the interface between the outsole (1) and the midsole (2) is not uniform. A problem arises.

Therefore, in the first thermoforming step (S30), the molding of the rubber material injected into the upper and lower molds 11 and 21 and the upper and lower molds 22 and 32 of the outsole is performed to a level of 60 to 80%. it is desirable

That is, assuming that the rubber material thermoforming rate is 100% at the time when the second thermoforming step (S5) is finished and shoe sole molding is completed, the mid mold is separated at the time when the rubber material is 60 to 80% ripe, and the second When the work is converted to the thermoforming step (S5), the highest degree of product completion is guaranteed.

In the manufacturing method of shoes using the mold device for insert shoes made as described above, the outsole (1) and the midsole (2) are individually molded in each mold in which the outsole (1) and the midsole (2) are knitted in multiple layers in one mold assembly, and then the mid mold As the manufacturing process is improved to join and mold the outsole (1) and the midsole (2) by simply changing the mold structure by separating and taking out, the manufacturing process of shoe soles in which the inner foot plate (3) is inserted is greatly simplified, as well as mass production. It has the advantage of being able to maintain uniform insert quality during production.

As described above, the most preferred embodiment of the present invention has been described in the detailed description of the present invention, but various modifications may be made within a range that does not depart from the technical scope of the present invention. Therefore, the scope of protection of the present invention should not be limited to the above embodiments, but the scope of protection should be recognized from the techniques of the claims to be described later and from these techniques to equivalent technical means.

1: outsole 1a: inner home
2: midsole 2a: fastening groove
3: My answer board
10: lower mold 11: outsole lower mold
20: Mid mold
21: outsole upper mold 21a: insert protrusion
22: midsole lower frame 23: insert groove
30: upper mold
30A: outer body 30B: inner body
32: upper mold 32a: forming hole 32b: core pin
34: hinge module 34a: support shaft 34b: guide rail 34c: lift arm

Claims (7)

A lower mold 10 in which an outsole lower mold 11 is formed to form a lower shape of the outsole 1 of the shoe;
It is molded to the lower mold 10, an outsole upper mold 21 for forming the upper shape of the outsole 1 is formed on the bottom surface, and a midsole lower mold 22 for forming the lower shape of the midsole 2 on the upper surface A mid mold 20 in which is formed and an insert groove 23 is formed so that the inner foot plate 3 is accommodated in the midsole lower mold 22;
An upper mold 30 that is molded to the mid mold 20 and has a midsole upper mold 32 formed on the bottom surface of the midsole upper mold 32 for forming the upper shape of the midsole 2,
The outsole upper and lower molds 11 and 21 and the midsole and lower molds 22 and 32 formed in a multi-layered state in which the lower mold 10, the middle mold 20, and the upper mold 30 are molded together It is provided so that the outsole 1 and the midsole 2 can be molded simultaneously using
With the mid-mold 20 removed, the upper and lower molds 10 and 30 are molded together so that the inner tread plate 3 is inserted between the outsole 1 and the midsole 2 so that it can be bonded and molded in close contact. The mold device of the insert shoe insert, characterized in that provided to.
According to claim 1,
The outsole upper mold 21 has an insert protrusion 21a formed at a position corresponding to the insert groove 23 of the mid mold 20, and an inner step plate ( 3) Inner groove (1a) is accommodated, characterized in that the mold device of the insert shoe insert, characterized in that the formation.
According to claim 1,
The upper mold 30,
An outer body (30A) through which a molding hole (32a) formed on the upper surface of the mid-mold (20) and forming a side area of the mid-sole upper mold (32) passes through;
An inner body (30B) that is hinged to the outer body (30A) and molded and opened, and engages with the molding hole (32a) to form the upper surface area of the upper midsole mold (32). mold device.
According to claim 1,
The depth of the insert groove 23 is formed in a reduced size compared to the thickness of the inner answer plate 3, so that a part of the upper region of the inner answer plate 30 is insert-molded to the midsole 2 during molding. Mold device for insert shoes.
According to claim 1,
The upper mold 30 is provided so that the mold height is variable by the variable hinge module 34,
The variable hinge module 34,
Includes a support shaft 34a and a lift arm 34c having one end mounted on the upper mold 30 and a long hole-shaped guide rail 34b formed on the other end which is longitudinally moved along the support shaft 34a. A mold device for insert shoes for inserts, characterized in that
In the manufacturing method of shoes using a mold device including a lower mold 10, a middle mold 20, and an upper mold 30,
An inner answer plate inserting step (S10) of inserting the inner answer plate (3) into the insert groove (2a) formed on the upper part of the mid-mold (20);
A rubber material inputting step (S20) of injecting a midsole rubber material into a mold between the upper mold 30 and the middle mold 20 and injecting an outsole rubber material into the mold between the mid mold 20 and the lower mold 10 ;
The first row of molding the lower mold (10), the middle mold (20), and the upper mold (30) and performing primary thermal molding to simultaneously mold the outsole (1) and the midsole (2) into which the inner foot plate (3) is inserted. molding step (S30);
a mid-mold separation step (S40) of separating the mid-mold 20 after the first thermal forming step (S30);
The upper and lower molds (10) and (30) are molded together, and the outsole (1) and the midsole (2) are placed in close contact with the inner foot plate (3), and the second heat molding is performed to form the outsole (1) and the midsole (2). A second heat forming step (S5) of integrally bonding a shoe manufacturing method using a mold device for an insert shoe insert comprising a step.
According to claim 6,
In the first thermoforming step (S30), the molding of the midsole rubber material and the outsole rubber material is performed to a level of 60 to 80%.

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