KR101595191B1 - Apparatus for mixing and supplying dissimilar material - Google Patents

Abstract

The present invention relates to an apparatus for mixing and supplying different materials. According to the present invention, an apparatus for mixing and supplying different materials supplies different materials which have flowability to be mixed in a supplied body. The apparatus for mixing and supplying different materials comprises a supplied body having a penetrating hole and having a space formed inside to allow the flow of the different materials which have been supplied; and a tube arranged to be able to rotate and having one end connected to the penetrating hole, and the other end receiving materials in the state that the materials form boundary surfaces or each material is not uniformly dispersed. The tube rotates not to allow the different materials supplied inside to be mixed and also to allow the different materials to be injected into the supplied body as the directions of the boundary surfaces of the materials are changed. Accordingly, provided is an apparatus for mixing and supplying different materials, which allows different materials having flowability to flow into the tube in the state that the different materials form boundary surfaces or each material is not uniformly dispersed, and which allows each material to be mixed only in the supplied body by changing the directions of the boundary surfaces of the materials when the different materials are injected into the supplied body, thereby securing excellent mixing efficiency.

Description

[0001] APPARATUS FOR MIXING AND SUPPLYING DISSIMILAR MATERIAL [0002]

The present invention relates to a heterogeneous material mixing and feeding apparatus, and more particularly, to a heterogeneous material mixing and feeding apparatus, in which different materials having fluidity form an interface or a dispersion state of each material is introduced into a tube in an uneven state, The present invention relates to a heterogeneous material mixing and supplying apparatus which is capable of mixing various materials only in a target object by changing the direction of a boundary surface thereof.

Generally, in an industrial process, a mixture supply device is required which mixes different materials at a certain ratio and supplies them to a manufacturing process or a manufacturing facility.

Such a mixture supplying apparatus is generally required to be supplied with mixed substances in the inside of the to-be-fed body and to be excellent in the mixing efficiency of the mixture.

As a representative example, a variety of resins may be mixed in various fields such as a keypad of a mobile phone, a keypad of a PDA, a PC keyboard, a telephone dial pad, and a calculator dial pad. These products perform processes such as coating or painting on the surface of the injection-molded product to prevent scratches.

1 schematically illustrates a typical coating or painting process of an injection molded article. Referring to FIG. 1, the product 12 is molded through injection molding, the mold 11 is released, and a coating process is performed on the surface of the molded product 12. At this time, the coating material 13 is often used by mixing different materials.

In the coating process, the coating is finally completed by applying the coating material 13 to be coated, drying it, or ultraviolet curing or thermally curing it. However, such a coating process has an environmental problem due to an organic solvent, has a problem that a thick film coating is limited, and a surface texture is limited.

In order to solve the above-mentioned problems, an in-mold coating process has been proposed. 2 is a view schematically showing an in-mold coating process of an injection molded product. The in-mold coating is a surface coating method in which a curable coating material is injection-molded into a mold 21 after injection molding a thermoplastic resin and cured. Generally, a coating process is performed by mixing two or more resins.

3 is a view schematically showing a conventional two-component in-mold coating process. 3, the conventional two-component in-mold coating process supplies the base material B and the curing agent H introduced into the supply part 33 into the mold 31 through the screw 32. In this case, although the mixing efficiency of the main body B and the hardening agent H is excellent by the screw 32, the motions of the main body B and the hardening agent H are improved even in the supply part 33 by the shape or rotation of the screw 32 It is hardened even in the supply part 33 to replace the supply part 33 or to clean it.

4 is a view schematically showing another step of a conventional two-component in-mold coating. Referring to FIG. 4, when the base B and the curing agent H are simply supplied without using a screw, they are mixed and cured only in the mold 41, but the mixing efficiency is low.

As described above, when the two-component in-mold coating apparatus or the like is used to supply different materials to the inside of the to-be-fed body, the mixing efficiency in the inside of the to-be-fed body is not excellent, .

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to solve the problems of the prior art described above, and it is an object of the present invention to provide an apparatus and a method for supplying a fluid, The present invention also provides a heterogeneous material mixing and feeding apparatus which has excellent mixing efficiency by mixing the respective materials only in the target body by changing the direction of the interface when injected.

According to the present invention, there is provided a mixed material supply apparatus for supplying different materials having fluidity to be mixed in a material to be fed, according to the present invention, in which a through hole is formed, A feed target which forms a space; And a tube which is rotatably provided, one end of which is connected to the through-hole, and which forms an interface between the materials through the other end, or in which the dispersion of each substance is not uniform, The mixed substance supply device is rotated so that the different substances are not mixed but the direction of the interface is changed and injected into the to-be-fed body.

Here, the motor rotates at a predetermined speed; And a belt member interconnecting the motor and the tube.

The apparatus may further include a controller for controlling the rotation speed of the tube and the injection speed of the different materials.

A first connection line interconnecting the other end of the tube and the first storage tank; And a second connection line interconnecting the other end of the tube and the second storage tank.

Here, the different materials are preferably different fluids.

Here, the different materials are different fluids, and it is preferable that at least one of the fluids is loaded with a filler.

Here, the different materials are a main agent and a curing agent which are cured at the time of mixing, and the tube and the curing agent, which flow into the tube, are not cured in the inside, As shown in Fig.

According to the present invention, there is provided a heterogeneous material mixing and supplying apparatus having excellent mixing efficiency by injecting different materials having fluidity so as to form an interface, while injecting while changing the direction of the interface in the supplied body.

In addition, when different materials having fluidity form a boundary surface continuously, when the different materials are cured when they are mixed, the respective materials are not mixed and hardened in the tube, Continuity of the process is ensured.

Further, since the controller controls the rotation speed of the tube and the injection speed of each material so as to change the direction of the interface in the body to be fed without being mixed in the tube, Do.

Further, by rotating the tube using the belt member connected to the motor, the interface can be changed at a constant speed, and the mixing efficiency is further improved.

1 schematically illustrates a typical coating or painting process of an injection molded article.
2 is a view schematically showing an in-mold coating process of an injection molded product.
3 is a view schematically showing a conventional two-component in-mold coating process.
4 is a view schematically showing another step of a conventional two-component in-mold coating.
FIG. 5 is a schematic perspective view of a mixed material supply apparatus according to an embodiment of the present invention. FIG.
Fig. 6 is a view showing a change in the interface between different materials having fluidity supplied from the tube of the mixed-substance supply apparatus of Fig. 5 into the object to be fed.
FIG. 7 is a diagram showing the experimental results of the mixed material supply apparatus of FIG.
FIG. 8 is a diagram showing another experimental result of the mixed material supply apparatus of FIG. 5; FIG.
FIG. 9 is a diagram showing another experimental result of the mixed material supply apparatus of FIG. 5; FIG.
FIG. 10 is a diagram showing another experimental result of the mixed material supply apparatus of FIG. 5; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a mixed material supply apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 5 is a schematic perspective view of a mixed material supply apparatus according to an embodiment of the present invention. FIG. 5, a heterogeneous material mixing and supplying apparatus 100 according to an embodiment of the present invention includes a supply target 110, a tube 120 having one end inserted into a through hole of the target supply 110, A motor 130, a belt member 140 connecting the motor 130 and the tube 120, a first connection line 150 installed at the other end of the tube 120, A first storage tank 170 connected to the first connection line 150 and a second storage tank 180 connected to the second connection line 160. The second connection line 160 is connected to the second connection line 160, And a control unit 190.

The material to be fed 110 is a space in which different materials having fluidity are mixed. An inner space is formed inside the material to be fed 110 such that different materials having fluidity can flow. Here, the different substances are different fluids or different fluids, and at least one of them is not limited such as a filler loaded.

In the present invention, the to-be-fed body 110 is a region where different materials supplied through the tube 120 are mixed so as to have a good mixing efficiency therein, and a through hole (not shown) to which the tube 120 is connected is formed , And through holes (not shown).

The tube 120 is configured to inject different materials having fluidity into the feeder body 110. The tube 120 is rotatably provided, and one end of the tube 120 is inserted into a penetrating portion (not shown) of the supply target body 110 and connected thereto. The first connection line 150 and the second connection line 160, which supply different materials, are connected to the other end of the tube 120, respectively.

The different materials having fluidity move in a state in which the interface is formed inside the tube 120 or the dispersion is not uniform. That is, the different substances are not mixed with each other inside the tube 120. The different substances in the tube 120 are continuously injected by the first connection pipe 150 and the second connection pipe 160 and moved to the side of the member 110 to be fed, Since there is no constitution such as a screw, the laminar flow is continuously formed without being mixed.

On the other hand, the tube 120 is rotatably provided. The tube 120 is rotated in a state where it is inserted into a through hole (not shown), so that the tube 120 is supplied into the body 110 while changing the direction of the interface between different materials continuously supplied. The different materials injected along the interface formed in the predetermined direction and the different materials injected along the interface formed in the different direction are mixed with each other in the body 110 to be fed, Are mixed with each other.

In other words, the different materials are not mixed with each other in the tube 120, but are formed by forming an interface, and are mixed by being changed in the direction of the interface when injected into the body 110 to be fed,

The motor 130 is provided so as to rotate at a predetermined speed as a structure for rotating the tube 120. The rotation speed of the motor 130 is controlled by the control unit 190. [

The belt member 140 is a structure that interconnects the tube 120 and the motor 130. One end of the belt member 140 is connected to the tube 120, and the other end is connected to the motor 130. Accordingly, the belt member 140 is operated by the rotation of the motor 130 so that the tube 120 rotates.

The first storage tank 170 and the first connection line 150 are configured to supply a predetermined substance to the tube 120 side. The first connection line 150 is connected at one end to the tube 120 and at the other end to the first storage tank 170. The subject B stored in the first storage tank 170 is supplied to the tube 120 side through the first connection line 150. [ At this time, the first connection line 150 is provided to control the moving speed of the material supplied to the tube 120 side. That is, the material continuously injected into the tube 120 through the first connection line 150 is provided so as to control the injection rate when injected into the body 110 to be supplied with excellent mixing efficiency

The second storage tank 180 and the second connection line 160 are configured to supply a predetermined substance to the tube 120 side. The second connection line 160 is connected to the tube 120 at one end and to the second storage tank 180 at the other end. The second connection line 160 is also provided to control the injection rate of the substance into the member 110 to be fed, such as the first connection line 150.

The control unit 190 controls the rotational speed of the motor 130 and the moving speed of different materials having fluidity. In order to form an interface without mixing different substances in the tube 120 and to mix the materials only due to the change of the interface within the feed target 110, the rotation speed of the tube 120 and the injection rate of different materials It is the main variable.

The control unit 190 determines the optimum parameters, and therefore, the control unit 190 determines the optimum parameters, and the optimum rotation speed and the injection speed of the different materials may be different from each other depending on the kind of each material. And controls the rotation speed of the motor 130 and the movement speed of the material supplied through the first connection line 150 and the second connection line 160.

Hereinafter, an application example of a mixed material supply apparatus according to an embodiment of the present invention will be described.

 Prior to the description, this application example describes a liquid-type in-mold coating apparatus using a property of curing when a main agent and a curing agent are mixed with each other, but it is preferable to mix different materials having fluidity to form a liquid- The present invention is not limited thereto.

In the immolatization process using a thermosetting resin, the surface of the product is coated by curing using a main agent and a curing agent. At this time, uniform mixing of the base and the curing agent is important in order to realize an excellent coating layer. Accordingly, it is necessary to suppress the curing reaction in the storage tank for storing each resin and the supply portion for supplying the resin into the body to be fed, and it is preferable to restrict the curing reaction to proceed only in the portion to be fed.

The material to be fed 110 is a space in which a fluidizable subject and a curing agent are mixed. In this liquid type in-mold coating apparatus, the surface of the injection molded product is finally coated. In this application example, the mold 110 is designed such that the area coated with the product is 100 mm x 150 mm and the coating thickness is 0.15 mm.

The mold 110 includes a top plate and a bottom plate which are mutually separable so that the tube 120 is inserted into the top plate and the through holes are formed in the top plate to receive the main body B and the curing agent H inside the tube 120 (Not shown).

Before the coating process, the mold 110 is filled with a polymer melt or the like, and a product formed by injection molding is disposed. A coating (B) and a hardener (H) mixed with a through- The upper surface of the product is coated.

The tube 120 is configured to receive the main body B and the hardening agent H and inject the same into the mold 110. The tube 120 is rotatably provided, and one end of the tube 120 is connected to a penetration portion (not shown) of the mold 110. The other end of the tube 120 is connected to a first connection line 150 for supplying the base B and a second connection line 160 for supplying the curing agent H. [

The base B and the curing agent H supplied to the inside of the tube 120 form a laminar flow and move toward the mold 110 in a state where a predetermined interface is formed. That is, the subject B and the curing agent H are not mixed with each other in the tube 120. The main body B and the curing agent H inside the tube 120 are connected to the mold B by the main body B and the curing agent H which are continuously injected by the first connection pipe 150 and the second connection pipe 160 110, and since there is no separate screw or the like in the tube 120, laminar flow is continuously generated without mixing.

On the other hand, the tube 120 is rotatably provided. It is essential to mix the base B and the curing agent H in the mold 110 since the base B and the curing agent H are mixed with each other to form a coating agent. At this time, the tube 120 rotates while being inserted into the through hole (not shown), so that the coating agent mixed with the base B and the curing agent H is injected into the mold 110. This is achieved by changing the direction of the interface between the subject B and the curing agent H formed inside the tube 120. This will be described in detail.

Fig. 6 is a diagram showing a change in the interface between different materials having fluidity to be fed into the mold from the tube of the liquid type resin molding apparatus shown in Fig. 5; 6, the direction of the boundary surface formed in a predetermined direction is changed by rotating the tube 120 so that the direction of the boundary surface is changed when the tube 120 is injected from the tube 120 into the mold 110. As a result, the main body B and the curing agent H injected along the interface formed in the predetermined direction and the main body B and the curing agent B injected along the interface formed in the other direction are injected into the mold 110, The base B and the curing agent H are mixed only in the mold 110 to become a coating agent.

The first storage tank 170 is a main storage tank provided in the form of a chamber and in which a subject B is stored. The first connection line 150 is connected to the tube 120 at one end and is connected to the first storage tank 170). In this application example, the first connection line 150 uses a transparent polyurethane material for the first connection line 150, and has an inner diameter of 4 mm.

The second storage tank 180 is a hardening agent storage tank provided in the form of a chamber and storing the hardening agent H therein. The second connection line 160 is connected to the tube 120 at one end and is connected to the second storage tank 180).

The control unit 190 controls the rotational speed of the motor 130 and the moving speed of different materials having fluidity. In order to form an interface without mixing the main body B and the hardening agent H within the tube 120 and mixing the inner surface of the mold 120 due to the change of the interface only inside the mold 110, ) And the hardening agent (H) are the main variables.

The control unit 190 may control the rotation speed of the tube 120 and the injection speed of the curing agent H differently depending on the type of each material, And controls the rotational speed of the motor 130 and the moving speed of the subject B and the hardener H through the variable.

Even if the same subject B and the curing agent H are used, the mixing efficiency may vary depending on the rotation speed of the motor 120 or the injection speed of the base B and the curing agent H. Figs. 7 to 10 are diagrams showing experimental results of the liquid type resin molding apparatus shown in Fig. 5. Fig. 7 is a view showing a mixed state in the mold 110 when the main body B and the curing agent H are injected at a rate of 10 ml / min without rotating the tube 120 (0 rpm). 8 is a view showing the mixing state in the mold 110 when the motions of the motors are changed by injecting the main bodies B and the hardener H at a rate of 10 ml / min. 9 is a view showing the mixing state in the mold 110 when the tube 120 is rotated at 70 rpm and the injection speed is different. 10 is a view showing the mixing state in the mold 110 when the tube 120 is rotated at 80 rpm and the injection speed is different.

The control unit 190 controls the motor 130 to rotate the tube 120 so that the subject B and the curing agent H have optimal mixing efficiency and can be mixed with the coating agent in the mold 110. [ And controls the injection speed by controlling the first connection line 150 and the second connection line 160.

Hereinafter, the operation of the mixed material supply apparatus according to an embodiment of the present invention will be described in detail.

The control unit 190 controls the rotation speed of the motor 130 and the rotation speed of the first connection line 150 and the second connection line 150 depending on the type of the substance stored in the first storage tank 170 and the second storage tank 180, Lt; RTI ID = 0.0 > 160 < / RTI >

For example, when each material is a silicone oil (B) and a hardening agent (H), respectively, and the viscosity is 350 cps, the optimum rotation speed and injection speed of the motor 130 are calculated.

The control unit 190 supplies each substance to the tube 120 through the first connection line 150 and the second connection line 160 based on the calculated information. Each material supplied in the tube 120 is injected in a laminar flow form to form a predetermined interface.

The control unit 190 rotates the motor 130 and the tube 120 connected by the motor 130 and the belt member 140 rotates.

In this case, since different materials move in a laminar flow form in the tube 120, they are not mixed with each other by the rotation of the tube 120, and when the different materials are injected into the body 110 to be fed, .

Accordingly, it is possible to allow different materials having fluidity to form an interface or to introduce the dispersion state of each material into the tube in an uneven state, and to change the direction of the interface when injected into the object to be fed, Are mixed to provide a mixed material supply apparatus with excellent mixing efficiency.

The scope of the present invention is not limited to the above-described embodiments, but may be embodied in various forms of embodiments within the scope of the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

100: heterogeneous material mixing supply device 110: supply object, mold
120: tube 130: motor
140: Belt member 150: First connection line
160: second connection line 170: first storage tank
180: second storage tank 190:
B: Topic H: Hardener

Claims (7)

A heterogeneous material mixing and supplying apparatus for supplying different materials having fluidity to be mixed in a body to be fed,
A supply target body having a through hole formed therein and forming a space capable of flowing the different materials supplied therein;
And a tube which is rotatably provided and has one end connected to the through hole and forming an interface between the materials through the other end or in which the dispersion of each material is not uniform,
Wherein the tube is rotated so as to be injected into the body to be fed while the direction of the interface is changed without mixing the different substances introduced into the tube. The method according to claim 1,
A motor rotating at a predetermined speed;
Further comprising a belt member interconnecting the motor and the tube. 3. The method according to claim 1 or 2,
Further comprising a controller for controlling the rotation speed of the tube and the injection speed of the different materials. The method of claim 3,
A first connection line interconnecting the other end of the tube and the first storage tank; And a second connection line interconnecting the other end of the tube and the second storage tank. The method according to claim 1,
Wherein the different materials are different fluids. The method according to claim 1,
Wherein the different materials are different fluids, and at least one of the different materials is loaded with a filler. The method according to claim 1,
The different materials are a main agent and a curing agent which are cured upon mixing,
Wherein the tube is rotated so as to be injected into the to-be-fed body while changing the direction of the interface, without the curing agent being hardened in the inside of the tube and the curing agent flowing into the tube.

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