KR102185829B1 - Waste midsole member and eva foam mixing midsole fabric manufacturing equipment - Google Patents

Abstract

The present invention provides a technology to increase the yield of midsole production by effectively and automatically measuring and recycling a midsole and a joint material to be disposed of. To this end, a midsole fabric manufacturing apparatus utilizing a mixed waste midsole member and EVA foam according to an embodiment of the present invention comprises; a pre-treatment apparatus for removing foreign substances adsorbed on the outer surface of a waste member including at least a midsole made of EVA and a joint material that is discarded when the midsole fabric is manufactured; a waste member pulverizing apparatus for producing recycled raw materials by pulverizing the waste member from which foreign substances have been removed by a pre-treatment unit; a raw material supply line including a first line receiving recycled raw materials from the waste member pulverizing apparatus and a second line receiving a new EVA foam; and a midsole molding apparatus for manufacturing a midsole fabric by foaming and molding EVA raw materials including the recycled raw materials and new EVA foam supplied from the raw material supply line in a midsole mold.

Description

Midsole fabric manufacturing equipment utilizing waste midsole member and EVA foam mixing {WASTE MIDSOLE MEMBER AND EVA FOAM MIXING MIDSOLE FABRIC MANUFACTURING EQUIPMENT}

The present invention relates to a device for manufacturing a midsole fabric with new raw materials by crushing and processing wastes such as defective products among the midsoles of shoes and a joint material as a mold line molding discharged from the midsole molding device. It relates to a technology for effectively processing a waste member including a midsole and a joint material into recycled raw materials, and using this together with a new EVA foam to produce a midsole.

EVA (Ethylene Vinyl Acetate) sponge is one of the petrochemical products, and is used for sports shoes midsoles and outsoles, solar cell materials, and extrusion coating materials. Ethylene-vinyl acetate, also known as poly, is a copolymer of ethylene and vinyl acetate. The weight percent of vinyl acetate is usually 10 to 40%, the balance being ethylene. Broadly speaking, there are three types of EVA copolymers with different vinyl acetate content and different materials used.

Since sponges using EVA are harder than regular sponges, are harmless to humans, and are eco-friendly materials, they are in the spotlight as a substitute for PVC. EVA sponges produce a specific type of fabric by processing raw materials by foaming, dyeing, etc., and producing products through the pressing and trimming process of trimming the edges.

Due to the above-described characteristics, the EVA sponge fabric has a great effect such as shock absorption, and is particularly used to manufacture a shoe sole, that is, a midsole. At this time, in order to minimize the occurrence of waste subsidiary materials according to the shape of the midsole, recently, a midsole is manufactured by foaming EVA foam as an EVA raw material in a foam mold in the form of a midsole.

When manufacturing such a midsole, a defective midsole occurs, or the joint material between the midsoles that is foamed and molded along the foaming line existing on the mold to foam EVA foam in the foaming mold is treated as waste. As such, various devices exist in the Internet publication (https://shengxinze.en.made-in-china.com/product/kMQmPXdEHjpI/China-EVA-Pulverizer-Rubber-Pulverizer-Rubber-Crusher.html). . In this prior art, when the waste EVA member is inserted through a hopper, it is pulverized using a grinder or the like, and processed through additives to produce recycled raw materials in the form of granules or powders.

However, in recent years, various shoe manufacturers have set the blending ratio of recycled raw materials and new raw materials, and are requesting them from midsole manufacturers. The above prior art has a problem in that the worker must manually measure the blending ratio of recycled raw materials and new raw materials. Thus, the necessity of a technology for solving this problem has been pointed out.

In addition, in the case of the above-described prior art, when the separation layer applied on the mold is adsorbed to the midsole in order to prevent adhesion of the foam-molded midsole to the midsole mold, it is pulverized together. There is a high possibility that unnecessary foreign substances such as the like are contained, and the problem of deteriorating the quality of recycled raw materials has been pointed out.

Accordingly, the present invention is designed to solve the above-described problems, and provides a technology for improving the quality of recycled raw materials by minimizing the inclusion of foreign substances such as separation layers when manufacturing recycled raw materials using waste members generated during midsole production. It has a purpose to work.

In addition, the present invention automatically measures and supplies two types of raw materials according to the required mixing ratio for the recycled raw material and the new EVA foam when manufacturing a midsole using both recycled raw materials and new EVA foam. In the production of midsoles that are required to be included, there is another purpose to provide a technology that minimizes human and time waste for weighing the blending ratio.

In order to achieve the above objects, the apparatus for manufacturing a midsole fabric utilizing a mixed waste midsole member and an EVA foam according to an embodiment of the present invention is provided on the outer surface of a waste member including a joint material that is discarded when manufacturing a midsole and midsole fabric made of at least EVA. A pretreatment device for removing adsorbed foreign substances; A waste member pulverizing device for producing recycled raw materials by pulverizing the waste member from which the foreign substances have been removed from the pretreatment unit; A raw material supply line including a first line receiving recycled raw materials from the waste member pulverizing device and a second line receiving new EVA foam; And a midsole molding apparatus for producing a midsole fabric by foaming and molding EVA raw materials including recycled raw materials and new EVA foams supplied from the raw material supply line in a midsole mold.

The pretreatment device includes a midsole-shaped member as a result of foaming the EVA raw material along the foaming line formed in the midsole mold of the midsole molding device and a member disposed of among the joints formed along the foaming line excluding the midsole shape. The separation layer applied to the midsole mold removes the material adsorbed on the midsole and the joint material as a foreign substance in order to separate it from the midsole mold after molding the midsole and the joint material as a foreign substance supplied to the waste member and desirable.

The pretreatment device includes: a conveyor belt through which the midsole and joint material are transported; an alignment line installed on a transfer line of the conveyor belt to align the midsole and joint material; A grinding module installed behind the alignment line and disposed at a relatively low height and narrow width compared to the alignment line to cut the outer surface of the inner midsole and joint material; And a discharge line disposed at the rear of the grinding module to supply the midsole and the joint material passing through the grinding module to the waste member pulverizing device.

A cleaning module disposed between the grinding module and the discharge line, and washing and drying the midsole and the joint material passing through the grinding module to prevent foreign matters on the outer surface cut by the grinding module from being supplied to the discharge line; It is preferable to further include.

A raw material supply unit disposed between the midsole molding device and the raw material supply line, and measuring and temporarily storing raw materials used for one-time driving of the midsole molding device; And controlling the driving of the pretreatment device, the waste member crushing device, the raw material supply line, and the midsole forming device, and in particular, by controlling the driving of the first line and the second line, the recycled raw material and the new EVA It is preferable to further include a; computing device for controlling the amount of foam is supplied to the raw material supply unit.

The computing device supplies the raw material to the raw material supply unit by first driving any one of the first line and the second line, and then drives the other to supply the raw material to the raw material supply unit, The amount of raw materials used for one-time drive, the weight of each of the recycled raw materials and the new EVA foam, and the raw materials used for one-time drive of the midsole molding apparatus calculated using the preset weight ratio of the recycled raw materials and the new EVA foam By sequentially controlling the driving of the first line and the second line according to the measured value of the supply unit, the recycled raw material and the new EVA are each weight of the recycled raw material and the new EVA foam used for one-time driving of the midsole molding device. It is desirable to have the foam supplied.

According to the present invention, when recycling a joint material that is disposed of and is disposed of in mold molding and a midsole to be disposed of, a pretreatment device for grinding the surface is used to remove foreign substances such as a separation layer present on the surface of the midsole and joint material before grinding. It is cut off, washed with a washing device of a pretreatment device, etc., and then crushed and processed to produce recycled raw materials.

Through this, there is an effect of improving the quality of recycled raw materials by minimizing the inclusion of foreign substances such as a separation layer when producing recycled raw materials using the waste member generated during midsole production.

On the other hand, according to the function of the raw material supply line and the raw material supply unit, the first line for supplying recycled raw materials and the second line for supplying new EVA foam are controlled according to a preset input amount and weight ratio, and automatically required for midsole production. Since recycled raw materials and new EVA foams are supplied according to the weight mixing ratio, there is an effect of minimizing human and time waste for weighing the mixing ratio when producing midsoles that are required to include recycled raw materials.

1 is a schematic structural block diagram of a midsole fabric manufacturing apparatus utilizing a mixed waste midsole member and EVA foam according to an embodiment of the present invention.
2 is a view for explaining a specific implementation example of a midsole fabric manufacturing apparatus utilizing a mixed waste midsole member and EVA foam according to an embodiment of the present invention.
3 is a view for explaining an implementation example of an alignment line according to an embodiment of the present invention.
4 is a view for explaining an implementation example of a grinding module according to an embodiment of the present invention.
5 is a view for explaining an implementation example of a washing module according to an embodiment of the present invention.
6 is a view for explaining an implementation example of a raw material supply line and a raw material supply unit according to an embodiment of the present invention.
Figure 7 is a flow chart for explaining the flow of the raw material is supplied to the midsole molding apparatus according to an embodiment of the present invention.

In the following, various embodiments and/or aspects are now disclosed with reference to the drawings. In the following description, for purposes of explanation, a number of specific details are disclosed to aid in an overall understanding of one or more aspects. However, it will also be appreciated by those of ordinary skill in the art that this aspect(s) may be practiced without these specific details. The following description and the annexed drawings set forth in detail certain illustrative aspects of one or more aspects. However, these aspects are exemplary and some of the various methods in the principles of the various aspects may be used, and the descriptions described are intended to include all such aspects and their equivalents.

As used herein, "an embodiment", "example", "aspect", "example", etc. may not be construed as having any aspect or design described as being better or advantageous than other aspects or designs. .

In addition, the terms "comprising" and/or "comprising" mean that the corresponding feature and/or element is present, but excludes the presence or addition of one or more other features, elements, and/or groups thereof. It should be understood as not.

In addition, terms including ordinal numbers such as first and second may be used to describe various elements, but the elements are not limited by the terms. These terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. The term and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, are those commonly understood by those of ordinary skill in the art to which the present invention belongs. It has the same meaning. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the embodiments of the present invention, an ideal or excessively formal meaning Is not interpreted as.

Meanwhile, in the following description, some of the components are omitted or excessively enlarged or reduced in order to describe the functions of each component of the present invention, but the corresponding figures are the technical features and rights of the present invention. It will be understood that it is not intended to limit the scope.

In addition, in the following description, a plurality of drawings will be simultaneously referred to and described in order to describe one technical feature or constituent elements constituting the invention.

1 is a schematic structural block diagram of a midsole fabric manufacturing apparatus utilizing a mixed waste midsole member and EVA foam according to an embodiment of the present invention, and FIG. 2 is a midsole utilizing a mixed waste midsole member and EVA foam according to an embodiment of the present invention. A view for explaining a specific implementation example of a fabric manufacturing apparatus, FIG. 3 is a view for explaining an implementation example of an alignment line according to an embodiment of the present invention, and FIG. 4 is a grinding module according to an implementation of an embodiment of the present invention A drawing for explaining an implementation example of, FIG. 5 is a view for explaining an implementation example of a cleaning module according to an embodiment of the present invention, and FIG. 6 is a raw material supply line and a raw material supply unit according to an embodiment of the present invention A drawing for explaining an implementation example of, FIG. 7 is a flowchart for explaining a flow in which raw materials are supplied to the midsole forming apparatus according to the implementation of an embodiment of the present invention.

When described with reference to the above-described drawings, the midsole fabric manufacturing apparatus utilizing a mixed waste midsole member and EVA foam according to an embodiment of the present invention includes a pretreatment device 10, a waste member crushing device 20, a raw material supply line ( 30) and a midsole molding device 40.

First, the pretreatment device 10 removes foreign substances adsorbed on the outer surface of the waste member 100 including the joint material disposed at least when manufacturing the midsole and midsole fabric made of EVA, and supplies this to the waste member crushing device 20. Functions.

In the present invention, the midsole is characterized by including the above-described EVA sponge material as a member used as a shoe sole. For this purpose, in addition to the EVA component, various additives may be added to the EVA foam for reinforcement such as strength, hardness and color. In the following description, the EVA raw material should be understood as a concept including various materials added and mixed to perform the function of the above-described midsole in addition to the EVA component as described above.

The joint material is a structure included in the midsole molding apparatus 40 as shown in FIG. 2, and by the structure of the mold implemented to foam-molded the EVA raw material, in the mold structure, except for the midsole mold, the foaming of the EVA raw material It refers to a region formed as a member connecting the midsole as the region corresponding to the foam line formed for injection is molded according to foam molding. It is usually produced at the time of foam molding through a midsole-type mold, and is usually discarded through the cutting process afterwards.

Accordingly, in the present invention, the closed member 100 will be understood as a concept including a midsole that is discarded according to cases such as being judged to be defective as described above, and a joint material that is a joint material that is produced and discarded together during midsole molding.

The midsole molding apparatus 40 molds the midsole and the joint material by foam molding of EVA raw materials for the mold. At this time, when EVA raw materials are adsorbed to the mold, the defect rate increases significantly, so a separation layer is applied to the mold, usually before and after foaming of the EVA raw material, and after foaming, the midsole and joint material from the mold can be separated without being adsorbed to the mold. So that it functions. At this time, the midsole and the joint material may be separated from the mold in an adsorbed state such as the above-described separation layer, or various foreign substances other than the separation layer may be adsorbed to the midsole and the joint material.

The pretreatment device 10 may be understood as a device for removing foreign substances adsorbed on the surface of the waste member 100 such as a midsole and a joint material. That is, as a result of foaming the EVA raw material along the foaming line formed in the midsole mold of the midsole molding device 40, a member of a midsole shape and a member of the joint material formed along the foaming line 51 excluding the midsole shape were discarded. As a foreign material supplied to the member 100 and adsorbed on the waste member 100, the separation layer applied to the midsole mold removes the material adsorbed on the midsole and the joint material as a foreign material in order to separate it from the midsole mold after molding the midsole and the joint material. Is to do. To this end, it may be implemented as an implementation example as shown in FIGS. 2 to 5.

Referring to the above drawings together, the pretreatment device 10 includes a hopper 11 into which the waste member 100 is introduced, a conveyor belt 12 for transferring the waste member 100, an alignment line 13, and a grinding module ( 14) and a discharge line 16 may be implemented, and additionally, a washing module 15 may be included.

The conveyor belt 12 conveys the waste member 100 discharged from the hopper 11 along the above-described alignment line 13, grinding module 14, and washing module 15, and extends the discharge line 16 area. It is a kind of conveying means that performs a function of discharging the processed waste member 110 to the hopper 21 side of the waste member pulverizing device 20. At this time, the conveyor belt 12 is shown to be implemented as a single transfer belt in FIG. 2, but may be implemented in a state in which a plurality of transfer belts are combined as needed.

As shown in FIG. 3, the alignment line 13 is installed on the conveying line of the conveyor belt 12 to align the midsole and the joint material for effective grinding by the grinding module 14, as shown in FIG. 3. Before entering the grinding module 14, in the case where the closed member 100 such as the midsole 101 and the joint material 102 are stacked, foreign matter on the stacked contact surface cannot be removed by the grinding module 14. Because it does.

In order to perform this function, as shown in FIG. 3, the alignment line 13 may be implemented in a box shape defining a narrow area, and is implemented as a side wall 132 and a ceiling 131, and the side wall 132 The height (D2) of the closed member 100 is set slightly higher than the maximum height (D1) of the closed member 100, while entering along the conveyor belt 12, the side wall 132 and the ceiling 131 It functions to pass while being aligned.

As shown in FIG. 4, the grinding module 14 is disposed at a relatively low height and narrow width compared to the alignment line 13, and includes an inner midsole 101 and a joint material 102. It performs the function of cutting the outer surface of ). That is, the ceiling side grinder 141 is disposed at a height slightly lower than that of the side wall 132 of FIG. 3, and the grinder 142 is also disposed on the side wall side, thereby cutting the closed member 100, thereby forming the alignment line 13. By cutting the outer surface of the closed member 100 entering the aligned state, thereby functioning to remove foreign substances such as a separation layer adsorbed to the outer surface.

At this time, the grinders 141 and 142 may be implemented as a disk-type grinder as shown in FIG. 4, but it will be natural that the grinders 141 and 142 may be implemented in various types regardless of the type of the grinder. Subsequently, as the discharge line 16, the waste member 110 is disposed behind the grinding module 14 to supply the midsole and the joint material passing through the grinding module 14 to the waste member pulverizing device 20. It can be supplied to the crushing device 20.

In principle, the waste member 100 that has passed through the grinding module 14 may be supplied to the waste member pulverizing device 20 in a state in which the separation layer or the like has been removed and processed into a form recyclable as a recycled material. However, foreign substances such as the cut-off separation layer may be re-adsorbed onto the conveyor belt 12 and in some cases, the waste member 100 in a detachable state.

In order to effectively remove foreign substances in this case, the cleaning module 15 may be disposed between the grinding module 14 and the discharge line 16 as shown in FIG. 5. Since the cleaning module 15 only needs to perform a function of cleaning foreign substances, there will be no limitation in height or width. It is preferable that the width of the inner region is larger than the conveyor belt 12 in order to drop and discharge the washed foreign matter.

As described above, the cleaning module 15 is disposed between the grinding module 14 and the discharge line 16, and the midsole and the joint material that have passed through the grinding module 14 are cleaned and dried by the grinding module 14. It performs a function of preventing foreign matters on the cut outer surface from being supplied to the discharge line 16.

To this end, as shown in Fig. 5, the cleaning module 15 includes a cleaning device 151 shown in Figs. 5 (a) and (B) and a drying device 152 shown in Fig. 5 (b). do. The cleaning device 151 supplies a cleaning liquid supply line 154 for receiving and discharging a cleaning liquid from an external cleaning liquid storage tank (not shown) by a pump (not shown), and a cleaning liquid discharged from the cleaning liquid supply line 154 It may be configured to include a nozzle 153 that strongly injects toward the receiving conveyor belt 12.

Thereafter, in order to dry the waste member adsorbed with the washing liquid and supply it to the waste member pulverizing device 20, a drying device 152 may be disposed. The drying device 152 has a drying means such as, for example, a heater 155 therein, and dries the waste member in a state in which moisture moving along the conveyor belt 12 is present, and remains by the wind pressure of the heater. By completely removing the foreign matter from the waste member, it functions to discharge the waste member 110 in a recyclable state through the discharge line 16.

As shown in FIG. 2, the waste member pulverizing device 20 receives the waste member 110 and pulverizes it into a powder form, and then processes the ingredients in a state in which the new EVA raw material is almost the same to produce recycled raw materials. It means the configuration to perform.

Specifically, as shown in FIG. 2, the waste member pulverizing device 20 includes a first inlet hopper 21, and the first inlet hopper 21 is discharged through the above-described discharge line 16. The waste member 110 is supplied and supplied to the crusher 22. The crusher 22 includes a plurality of disk-type grinders, grinder coolers, and motors, and performs a function of finely pulverizing the waste member 110 into a powder form therein.

The pulverized powder type waste member is transferred to the second inlet hopper 24 by the circulation force by the pump 23. At this time, in the additive tank 26, various materials such as additives that must be included in the above-described EVA raw material are included in the pulverized waste member in the powder form, so that the pulverized waste member in the powder form has similar properties to the new EVA raw material. The circulation force of the pump 23 is used together or transferred to the second inlet hopper 24 through a separate pump.

The raw material in which the waste member and other materials are mixed is mixed and processed by the mixer 25 to be processed into recycled raw materials having a component substantially similar to that of the new EVA raw material, and supplied to the raw material supply line 30.

The raw material supply line 30 includes a first line 31 to which the above-described recycled raw material is supplied, and a second line 32 to be supplied with a new EVA foam, which is a new EVA raw material. The raw material supply line 30 uses the first line 31 and the second line 32 to supply recycled raw materials and new EVA foam to the midsole molding apparatus 40, thereby functioning to form a new midsole.

As shown in FIG. 2, the midsole molding device 40 refers to a device for producing a midsole fabric by foaming and molding EVA raw materials including recycled raw materials and new EVA foam supplied from the raw material supply line 30 into a midsole mold. do. The midsole molding device 40 includes a number of configurations for general foam molding including a foam line 51 and a mold region including a midsole mold, a foaming device for foaming raw materials, a heating and cooling device, a mold press device, etc. do.

At this time, the recycled raw material and the new EVA foam are mixed and provided to be used in midsole molding. At this time, according to the shoe manufacturer and other rules, the mixing weight ratio of the recycled raw material and the new EVA foam may be set. In the present invention, in order to automatically apply such a set weight ratio and automatically supply recycled raw materials and new EVA foam according to the set weight ratio, the raw material supply unit 50 and the computing device 60 are mixed with the waste midsole member and the EVA foam. It can be included as a configuration of a midsole fabric manufacturing device utilized.

The raw material supply unit 50 may be configured to include a temporary tank 52 and a metering device 51 as shown in FIG. 6. The raw material supply unit 50 is disposed between the midsole forming device 40 and the raw material supply line 30, and performs a function of measuring and temporarily storing raw materials used for one-time driving of the midsole forming device 40.

The one-time driving of the midsole molding apparatus 40 means the entire operation cycle of the midsole molding apparatus 40 required for the midsole molding apparatus 40 to drive once to produce a midsole. That is, one drive according to the specifications of the midsole molding apparatus 40 means a cycle for molding at least one pair of midsoles. Alternatively, when the midsole molding apparatus 40 performs a number of operations with one input of raw materials, the entire driving cycle according to one input of raw materials may mean the above-described one-time driving.

In order to supply raw materials according to a plurality of drives, the raw material supply unit 50 performs a function of measuring and temporarily storing raw materials and supplying the raw materials stored in the temporary tank 52 to the midsole forming apparatus 40 each time it is driven. do. In order to provide an accurate amount of raw materials for each drive, the weighing device 51 may be included, and the weighing device 51 may be understood as a configuration including a weighing sensor such as a digital scale.

The computing device 60 operates each of the above equipments according to the overall driving sequence of the pretreatment device 10, the waste member crushing device 20, the raw material supply line 30, and the midsole molding device 40, for example. It means a kind of control unit to control. At this time, the computing device 60 additionally performs a function of controlling the supply amount of the recycled raw material and the new EVA foam.

To this end, a first valve 34 and a second valve 35 may be installed on the first line 31 and the second line 32, respectively, as shown in FIG. 2. The first line 31 is connected to the outlet of the waste member crushing device 20 as described above, and the opening and closing is controlled by the first valve 34 to control the supply of recycled raw materials to the temporary tank 52 Can be. Meanwhile, the second line 23 is connected to the new EVA foam storage tank 33, and the opening and closing is controlled by the second valve 35 so that the supply of the new EVA foam to the temporary tank 52 can be controlled. .

In this case, the computing device 60 sequentially controls one of the first line 31 and the second line 32 to be driven first. When the first line 31 and the second line 32 are driven, recycled raw materials or new EVA foam are supplied to the temporary tank 52 as the first valve 34 and the second valve 35 are opened. Means being.

The computing device 60 uses the weighing device 51 to measure the weight of the recycled raw material and the new EVA foam to control the input weight of the recycled raw material and the new EVA foam, so the first line 31 and the second line One of (32) is first driven to supply the raw material to the raw material supply unit 50, and then the other is driven to supply the raw material to the raw material supply unit 50.

At this time, the amount of raw materials used for one drive of the midsole molding apparatus 40, the recycled raw materials used for one-time driving of the midsole molding apparatus 40 calculated using the mixing weight ratio of the preset recycled raw materials and the new EVA foam, and Midsole molding by sequentially controlling the driving of the first line 31 and the second line 32 according to the weight of each new EVA foam and the weighing value of the weighing device 51 of the raw material supply unit 50, that is, the measured weight The recycled raw material and the new EVA foam are supplied with the weight of each of the recycled raw material and the new EVA foam used in one drive of the device 40. The flow for this is shown in FIG. 7.

When described with reference to FIG. 7, for example, when the amount of raw material to be inputted to one drive of the midsole molding apparatus 40 is A, and the blending weight ratio of the recycled raw material and the new EVA foam is a:b, the computing device 60 ) Performs a step (S1) of loading information about this.

Thereafter, when, for example, recycled raw materials are first input, the computing device 60 first opens the first line 31 (S2). Thereafter, the weighing is performed through the weighing device 60 (S3), and the weighing value measured in the temporary tank 52 using the sensing value of the weighing device 51, that is, the weight is A xa/(a+b) Is checked (S4), and when the weight is A xa/(a+b), the valve 34 of the first line 31 is shut off and the valve 35 of the second line 32 is closed. Open (S5).

After that, the weighing is continued (S6), and it is checked whether or not the total weight reaches A, which is the amount of raw material to be put into one drive (S7). At this time, checking whether the total weight reaches A in step S7 is the state that A xa/(a+b) has already been added to the recycled material, so A xb/(a+b), the target value of the new EVA foam, is input. Whether or not it is due to the fact that it is only necessary to check whether the total weight of both values is A.

When the weight reaches A by performing step S7, the valve 35 of the second line 32 is cut off, and a mixing device such as a shaker that can be disposed in the temporary tank 52 is driven ( S9), the recycled raw material 120 in the temporary tank 52 and the new EVA foam 200 are evenly mixed.

Through this, by controlling the first line 31 to which recycled raw materials are supplied and the second line 32 to which new EVA foam is supplied according to a preset input amount and weight ratio, it is automatically recycled according to the weight mixing ratio required for midsole production. Since the raw material and the new EVA foam are supplied, there is an effect of minimizing the waste of human and time for weighing the blending ratio in the production of midsoles that are required to include recycled raw materials.

Although the embodiments have been described by the limited embodiments and drawings as described above, those of ordinary skill in the art will appreciate that various modifications and variations are possible from the above description. The terms such as "include", "consist of" or "have" described above mean that components without a description to the contrary may be included, so other components are not excluded. It should be construed as more inclusive. In addition, the scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

Claims (6)

A pretreatment device for removing foreign substances adsorbed on the outer surface of the waste member including at least a midsole made of EVA and a joint material that is discarded when manufacturing the midsole fabric;
A waste member pulverizing device for producing recycled raw materials by pulverizing the waste member from which foreign substances have been removed from the pretreatment unit;
A raw material supply line including a first line receiving recycled raw materials from the waste member pulverizing device and a second line receiving a new EVA foam; And
Including; a midsole molding device for producing a midsole fabric by foam-molding the recycled raw material supplied from the raw material supply line and the EVA raw material including the new EVA foam in a midsole mold,
Arranged between the midsole forming device and the raw material supply line, including a temporary tank temporarily storing the raw material used for one-time driving of the midsole forming device and a weighing device for measuring the weight of the raw material temporarily stored in the temporary tank Raw material supply unit; And
Controlling the driving of the pretreatment device, the waste member crushing device, the raw material supply line and the midsole molding device, in particular, by controlling the driving of the first line and the second line, the recycled raw material and the new EVA foam Further comprising a; computing device for controlling the amount supplied to the raw material supply unit,
The computing device,
One of the first line and the second line is first driven to supply the raw material to the raw material supply unit, and then the other one is driven to supply the raw material to the raw material supply unit, but used for one-time driving of the midsole molding apparatus The weight of each of the recycled raw materials and new EVA foams used for one-time driving of the midsole molding apparatus calculated using the amount of raw materials to be recycled, the blending weight ratio of the predetermined recycled raw materials and the new EVA foam, and the measurement measured in the weighing device By sequentially controlling the driving of the first line and the second line according to the value, the recycled raw material and the new EVA foam are each weight of the recycled raw material and the new EVA foam used for one-time driving of the midsole molding apparatus. After being supplied to the temporary tank, a mixing device disposed in the temporary tank is driven to mix the recycled raw material and the new EVA foam, and then supplied to the raw material supply line from the temporary tank. And midsole fabric manufacturing device utilizing EVA foam mixing.
The method of claim 1,
The pretreatment device,
As a result of foaming the EVA raw material along the foam line formed in the midsole mold of the midsole molding apparatus, a member having a midsole shape and a member disposed of among the joints formed along the foaming line excluding the midsole shape are supplied to the closed member A waste midsole, characterized in that the separation layer applied to the midsole mold removes the midsole and the material adsorbed on the joint material as a foreign substance in order to separate from the midsole mold after molding the midsole and the joint material as a foreign substance adsorbed to the member Midsole fabric manufacturing device utilizing a mixture of members and EVA foam.
The method of claim 2,
The pretreatment device,
A conveyor belt through which the midsole and joint material are transported;
An alignment line installed on the conveying line of the conveyor belt to align the midsole and the joint material;
A grinding module installed behind the alignment line and disposed at a relatively low height and narrow width compared to the alignment line to cut the outer surface of the inner midsole and joint material; And
A discharging line disposed at the rear of the grinding module to supply the midsole and the joint material passing through the grinding module to the waste member pulverizing device; a midsole fabric manufacturing apparatus using a mixed waste midsole member and EVA foam comprising a.
The method of claim 3,
A cleaning module disposed between the grinding module and the discharge line, and washing and drying the midsole and the joint material passing through the grinding module to prevent foreign matters on the outer surface cut by the grinding module from being supplied to the discharge line; Midsole fabric manufacturing apparatus utilizing a mixed midsole member and EVA foam, characterized in that it further comprises.
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