KR20080001962A - Extrusion and injection apparatus - Google Patents

Abstract

An extrusion and injection apparatus is provided to execute injection molding continuously after cooling an extrusion molding product at predetermined temperature by forming a cooling part. An extrusion and injection apparatus comprises an extrusion part(50), a cooling part(60), and an injection part(70). The extrusion part executes extrusion molding. The cooling part cools an extrusion molding product molded by the extrusion part at the temperature of injection molding. The injection part combines an injection molding product with the extrusion molding product cooled by the cooling part. The extrusion part consists of a housing(52) having an extrusion hole(51) with a desirable extrusion molding type, and an extrusion piston(53) for pushing a material to be extruded into the housing.

Description

Extrusion and Injection Equipment {EXTRUSION AND INJECTION APPARATUS}

1 is an exemplary view showing a general extrusion apparatus.

Figure 2 is an exemplary view showing a general injection molding apparatus.

Figure 3 is an embodiment configuration of an extrusion and injection apparatus according to the present invention.

Figure 4 is an illustration of an extrusion and injection molding product produced through the extrusion and injection device according to the present invention.

<Description of Symbols for Main Parts of Drawings>

1 Extrusion apparatus 20: Injection molding apparatus

50 extruded part 51 extruded hole

52: extrusion housing 53: extrusion piston

54 extruded material 60 cooling part

61 cooling housing 62 cooler

70: injection part 71: injection housing

72: fixed mold 73: injector

74: moving mold

The present invention relates to an apparatus for molding a metal or a synthetic resin, and more particularly, to an extrusion and injection apparatus capable of simultaneously performing extrusion molding and injection molding.

Extrusion molding is a process of shrinking a cross section by pressing a metal block through a small hole under high pressure. The extrusion molding is mainly performed under a temperature condition with a low deformation resistance of a material. It is mainly used for.

Injection molding refers to a method of injecting (molding) a material, and generally, a method of producing a product by inserting a thermoplastic material into a hopper, applying heat to melt it, and then applying an appropriate pressure to push it into a mold. Say. Most plastic products currently in use are those molded by such injection.

In other words, extrusion molding is a method of molding a product by pushing the material under pressure, and injection molding is a method of forming a product in the mold of an injection mold and pressing molten resin into the mold.

In this case, it is similar to pushing the material into a shaped frame, but injection molding is for mass production of a specific shape of a product individually, and extrusion is for continuously drawing a long product having a certain shape. It is used in the production of such products, and the extrusion molding material may be all kinds of plastic, rubber, metal and the like.

1 is an exemplary view showing a general extrusion molding apparatus.

That is, as shown in Figure 1, the extrusion molding device 20 is a housing in which the extrusion hole 23 of the desired molding shape is formed by using the extrusion piston 21 for the extrusion material 25 desired for extrusion molding. As it is pushed into the (22), as the material is discharged through the extrusion hole 23 to have a desired shape, as described above, a variety of materials can be used, generally long shape such as guide rail, pipe It is used to make a product.

2 is an exemplary view showing a general injection molding apparatus.

In the general injection molding apparatus, as shown in FIG. 2, a fixed frame 2 is installed next to the main controller 8, a driving cylinder 3 is fixed at the center of the fixed frame 2, and a driving cylinder 3. At the center of the end of the cylinder rod (3 ') of the upper and lower ends are made of a mold support (4) which is moved to the guide of the guide rod (7). In addition, the working mold (5) is fixed to the tip of the mold support (4), the opposite end of the fixed frame (2) consists of a fixed mold (6) paired with the working mold (5) for injection molding, respectively Sensor 6 'is installed to detect the separation distance between each other. In addition, the pressurized filling tank 10 is installed at the upper left side of the injection molding apparatus 1, and the pressurized cooling tank 11 is installed at the upper right side, and the raw material supply pipe and the pressurized injection nozzle 11 'are connected to each other. In addition, a main controller 8 for controlling the injection molding apparatus 1 is installed at the left side of the fixed frame 2, and is electrically connected to the main controller 8 through a cable 9 ′ to move the work position. It is composed of possible movement controllers 9.

That is, the injection molding apparatus as described above is to inject the molding in the working mold (5) and the stationary mold (6).

On the other hand, as described above, the extrusion molding can be used in a variety of materials, and generally has the advantage that can be used to manufacture long products such as guide rails, pipes, etc., but only a simple shape such as pipes or tubes It has the disadvantage of being able to.

In contrast, injection molding has the advantage of being able to make complex shapes, but has the disadvantage that the material that can be used is limited to thermoplastic resins.

In addition, the extrusion molding device has a feature that a variety of materials can be used, but in the process of producing a product, since only one material (mainly aluminum) can be produced, parts other than the main material are separately If the material is made of a separate material using a separate material after the work process to be attached to the original part is required additionally, there is a problem that many processes are required to produce a product formed of a variety of materials, This problem may also occur in injection molding apparatus.

In other words, if you want to make a finished product that combines a product that can be molded by a simple process such as extrusion molding and a complex product that can be made only by injection molding, the product can be manufactured in an extrusion molding apparatus and an injection molding apparatus, respectively. There is a problem in that the overall process is delayed because the process of combining the two products after the addition must be performed.

Accordingly, it is an object of the present invention to provide an extrusion and injection apparatus configured to simultaneously perform extrusion and injection molding.

In order to achieve the above object, the extrusion and injection device according to the present invention, the extrusion unit for performing extrusion molding; A cooling unit for cooling the extruded product molded by the extrusion unit to a temperature at which injection molding is possible; And an injection unit for manufacturing an injection molded product and coupling the extrusion molded product cooled by the cooling unit.

In addition, the extrusion unit, the housing is formed with the extrusion hole of the desired extrusion molding form; And an extrusion piston for pushing the material to be extruded into the housing.

In addition, at least one of plastic, rubber, and metal may be used as the material to be molded in the extruded part.

The cooling unit may further include: a cooling housing through which the extruded product discharged through the extrusion unit passes; And a cooler formed on an outer surface of the cooling housing to cool the extruded product passing through the cooling housing.

The cooling unit may cool the extruded product to a predetermined temperature at which the injection molding material to be used in the injection unit and the material of the extruded product discharged through the extruder may be combined.

The injection unit may include: an injection housing through which the extruded product passed through the cooling unit is introduced; A fixed mold coupled to the injection housing and cast into a shape of an injection molded product to be bonded to the extruded product; And an injector for injecting injection molding material into the stationary mold.

In addition, the injection unit is coupled to the fixed mold further comprises a movable mold formed to be movable to complete the injection molded product.

In addition, the extrusion molding material used in the extrusion unit and the injection molding material used in the injection unit is characterized in that different.

Other objects and advantages of the present invention in addition to the above object will become apparent from the description of the preferred embodiment of the present invention with reference to the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 3 to 4.

Figure 3 is an embodiment configuration of an extrusion and injection apparatus according to the present invention. In addition, Figure 4 is an exemplary view of an extrusion and injection molding product produced by the extrusion and injection device according to the present invention.

Extrusion and injection apparatus according to the present invention, as shown in Figure 3, the extrusion unit 50 for performing the extrusion, the cooling for cooling the extrusion molded product molded by the extrusion to a temperature capable of injection molding It comprises a unit 60 and an injection unit 70 for injection molding the extruded product cooled by the cooling unit.

First, the extrusion unit 50 is an extrusion piston 52 for pushing the extrusion housing 52 in which the extrusion hole 51 of the desired extrusion molding shape is formed, and the extrusion material 54 to be extruded into the extrusion housing. It comprises 53.

That is, the extruder 50 is for extruding the extruded material, and the extruded hole 51 of the desired molding form is formed by using the extruded piston 54 for the extruded material 54 to be extruded. By pushing the formed extrusion housing 52, the extruded material 54 is discharged through the extrusion hole 51 to perform a function to have a desired shape. In this case, as a material that can be molded in the extruded part 50, various kinds of plastics, rubber, metal, etc. may be used, and the extruded part 50 generally includes guide rails, pipes, rods, or pipes. Simple and long products such as the like can be molded.

Next, the cooling unit 60 performs a function of lowering the extruded extruded product to a predetermined temperature, and the cooling housing 61 through which the extruded product discharged through the extruded unit 50 passes and the It is formed on the outer surface of the cooling housing and comprises a cooler 62 for cooling the extruded product passing through the cooling housing.

At this time, the cooling water passes through the cooler 62 to cool the cooling housing 61, whereby the extruded product passing through the cooling housing 61 is cooled.

That is, the extruded product that has passed through the extruded part 50 needs to be cooled because it is deformed at a high temperature. Furthermore, in order to match the injection molding process in the injection part 70 with the molding temperature of the rough injection material, In the cooling unit 60, it is necessary to lower the temperature of the extruded article to a predetermined temperature.

Finally, the injection part 70 is for performing injection molding on the extruded product, the injection housing 71 into which the extruded product is introduced, coupled to the injection housing and to be bonded to the extruded product. It comprises a fixed mold 72 cast in the shape of an injection molded product and an injector 73 for injecting injection material into the fixed mold.

At this time, the injection part 70, when the completion of the injection molded product only by the fixed mold 72 is difficult, the mobile mold 72 is combined with the fixed mold 72 to complete the injection molded product additionally It may be provided.

That is, the injection part 70 is for bonding the injection molded product having a complex formation to the extruded product, and as shown in FIG. 3, after the extrusion, the extruded product passed through the cooling unit 60. For the injection molded product.

In this case, the material of the extrusion-molded product extruded from the extruded part 50 and the material of the injection-molded product injected from the injection part 70 may be the same material or different materials.

That is, the extrusion and injection apparatus according to the present invention has a feature that the material used in the extrusion unit 50 and the material used in the injection unit 70 may be used when the same or not.

In addition, the extrusion and injection device according to the present invention, after completing the extrusion product of a simple structure such as guide rails, pipes, rods or pipes through the extrusion unit 50, the material of the extruded product and other kinds of materials It is characterized in that the process of bonding the injection molded article having a complicated shape to the extruded article can be carried out continuously.

The process of manufacturing the extrusion and injection molded products as shown in FIG. 4 through the extrusion and injection apparatus according to the present invention as described above is as follows.

First, the extrusion material 54 to be extruded is inserted into the extrusion housing, and then continuously pushed into the extrusion housing 52 using the extrusion piston 53. As the extruded material, various materials such as plastic, rubber, metal, etc. may be used as described above.

At this time, the extrusion material is molded into the shape of the extrusion hole 51, while exiting the cooling unit 60 through the extrusion hole 51 formed in the extrusion housing 52. That is, as illustrated in FIG. 4, the product 80 formed through the extrusion may be a cylindrical product.

On the other hand, the extrusion molded product 80 exited to the cooling unit 60 is cooled to a predetermined temperature by the cooler 62 while passing through the cooling housing 61. This cooling process is carried out continuously until the material of the product to be injection molded in the injection part reaches a temperature that can be fully bonded to the material of the product extruded in the extrusion part.

That is, in the case of heterogeneous materials, the coupling may be determined by the bonding temperature, and thus the cooling temperature through the cooling unit 60 may be variously performed at a predetermined temperature by analyzing the characteristics of each material.

When the extruded product lowered to a predetermined temperature through the cooling unit 60 flows into the injection housing 71 of the injection unit 70, the material of the injection molded product is injected through the injection unit 73. .

At this time, a fixed mold 72 cast in the shape of a product to be injection molded is fixed to the injection housing 71 in the injection unit 70. For example, in order to manufacture an extrusion and injection molded product in which a rectangular parallelepiped injection molded product 90 is coupled to the top of a cylindrically extruded extrusion molded product as shown in FIG. It should be attached to the top of the injection housing 71.

However, when it is difficult to produce an injection mold product using only the stationary mold 72, the movable mold 74 which is combined with the stationary mold to inject the injection material injected therebetween is at the top of the stationary mold 72. It may be provided in addition, the moving mold 74 may be moved by a moving cylinder or the like.

That is, although both the stationary mold 72 and the movable mold 74 are formed in FIG. 3, as described above, the stationary mold 72 and the movable mold 74 are not necessarily used simultaneously, and thus the stationary mold 72 is used. ) May be used. In addition, the part of the stationary mold 72 which is in contact with the injection housing 71 is open so that the injection molding material injected through the injection part is directly in contact with the extruded product introduced into the injection housing 71. That is, when only the stationary mold 72 is used, the shape of the injection molded product is determined by the shape of the stationary mold 72 that does not contact the injection molding material.

In addition, even when the movable mold 74 is used, the portion of the fixed mold 72 which is in contact with the injection housing 72 is open, so that the injection molding material injected through the injection portion is transferred to the injection housing 71. The injection molding material is directly contacted with the extruded molded product, and the injection molding material injected into the stationary mold 74 is pressed by the movable mold 74 to form a desired shape.

On the other hand, after a certain time has passed after the material of the injection molded product is injected into the fixed mold 72 through the injection unit 73 or the fixed mold and the moving mold are combined, a predetermined pressure is applied to the injection molded product. After application, the extruded and injection molded product is completed and discharged.

That is, the present invention, after completing the extrusion-molded product 80 of a simple shape by extrusion molding, to combine the injection-molded product 90 of a complex shape with the extrusion molded product, the extrusion molded product After cooling to a predetermined temperature, injection molding can be carried out continuously.

In addition, the present invention may be applied to a case where the material of the extruded product and the material of the injection molded product are different from each other. It is characterized by including a cooling unit for cooling the molded product.

As described above, the extrusion and molding apparatus according to the present invention, after completing the extrusion-molded product of a simple shape by extrusion molding, for bonding the injection-molded product of a complex shape to the extrusion-molded product, the extrusion There is an excellent effect that the injection molding can be continuously performed after cooling the extruded product to a predetermined temperature.

In addition, the present invention may be applied to a case where the material of the extruded product and the material of the injection molded product are different from each other. There is an excellent effect of being able to cool the molded article.

That is, the present invention can bring about an improvement in productivity by proceeding two molding processes at the same time, there is an excellent effect that can be easily combined with two or more different parts without a separate fastening parts.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (8)

An extrusion unit for performing extrusion molding; A cooling unit for cooling the extruded product molded by the extrusion unit to a temperature at which injection molding is possible; And An extrusion and injection apparatus comprising an injection unit for manufacturing an injection molded product to be bonded to the extrusion molded product cooled by the cooling unit. The method of claim 1, The extruded portion, A housing in which extrusion holes of a desired extrusion shape are formed; And And an extrusion piston for pushing the material to be extruded into the housing. The method of claim 1, Extrusion and injection device, characterized in that at least one of plastic, rubber, metal is used as the material to be molded in the extrusion. The method of claim 1, The cooling unit, A cooling housing through which the extruded product discharged through the extruder passes; And And a cooler formed on an outer surface of the cooling housing to cool the extruded article passing through the cooling housing. The method of claim 1, The cooling unit, And extruding the extruded product to a predetermined temperature at which the injection molded material to be used in the injection unit and the material of the extruded product discharged through the extruded unit can be combined. The method of claim 1, The injection unit, An injection housing through which the extruded product passing through the cooling unit flows; A fixed mold coupled to the injection housing and cast into a shape of an injection molded product to be bonded to the extruded product; And Extrusion and injection device comprising an injector for injecting injection molding material into the fixed mold. The method of claim 6, The injection unit, Extrusion and injection device further comprises a movable mold coupled to the fixed mold to be movable to complete the injection molded product. The method of claim 1, Extrusion molding material used in the extrusion unit and the injection molding material used in the injection unit is characterized in that the extrusion and injection device different.

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