KR20180045366A - Apparatus and method for injection molding and coating - Google Patents

Abstract

Provided are a method and an apparatus for performing injection molding and coating. A forming apparatus for implementing the injection molding and surface coating at the same time comprises: a first mold; and a second mold coupled to the first mold according to relative movement with the first mold to provide pressure into cavities. One mold between the first mold and the second mold includes: a forming mold having one or more forming cavities filled with a forming material wherein the forming material is hardened by temperature change and the hardened forming material is attached to a core and a coating mold having one or more coating cavities filled with a coating material, the coating material is hardened by beams, the other mold between the first mold and the second mold is separated from the forming mold after the forming material is hardened, at least one between the forming mold and the coating mold moves after the other mold between the first mold and the second mold is separated to change a position of the coating mold into a place where the forming mold has been positioned, the other mold between the first mold and the second mold moves toward the coating mold to input the hardened forming material into the coating cavities, the coating material is filled into the coating cavities into which the forming material is inputted, and beams are emitted to the filled coating material to harden the filled coating material. The present invention performs the injection molding and the surface coating in one mold to simplify processes, thereby enhancing productivity, differentiating coating quality and constructing eco-friendly environment.

Description

[0001] APPARATUS AND METHOD FOR INJECTION MOLDING AND COATING [0002]

The present invention relates to a molding apparatus and method for simultaneous injection molding and surface coating.

Since plastics are advantageous in mass production at low cost, light in weight, and can realize various physical properties, they are used as core materials in most products leading to domestic and overseas industries. Among them, the largest number of molded articles are produced by the injection molding method.

Recently, various functionalities such as high gloss, scratch resistance, chemical resistance, weather resistance, electromagnetic wave or ultraviolet ray shielding have been demanded in plastic inner and outer parts according to the trend of high-grade / multifunctional plastic products. In order to cope with this, And then coated on the surface of the molded article by dipping.

Existing methods cause environmental pollution by discharging volatile organic compounds during the process. When the thickness of the coating is too thick, it is necessary to repeat the coating process several times and there is a problem that a quality defect occurs due to a complicated process.

Accordingly, studies on injection molding and coating methods for solving the problems are underway.

Korean Patent Application No. KR20120105822A

The present invention has been devised in response to the background art described above, and the present invention intends to provide a molding apparatus which embodies injection molding and surface coating together.

A first aspect of the present invention for solving the above-mentioned problems provides a molding apparatus which simultaneously implements injection molding and surface coating. The molding apparatus comprising: a first mold; And

And a second mold for providing a pressure in the cavity by engaging with the first mold in accordance with a relative movement with the first mold, wherein one mold of the first mold and the second mold comprises: A molding die comprising at least one molding cavity to be filled, the molding material being cured by a change in temperature and the cured molding material being attached to the core; And a coating mold comprising at least one coating cavity in which the coating material is filled, the coating material being cured by light rays, wherein the molds of the first and second molds are arranged such that the molding material Wherein at least one of the forming mold and the coating mold moves after the first one of the first mold and the second mold is spaced apart from the forming mold after being cured, The other of the first mold and the second mold moves in the direction of the coating mold so that the cured molding material is drawn into the coating cavity, The coating material filled with the molding material is filled with the coating material, and the filled material is irradiated with light Wherein the filled coating material may be cured.

A second aspect of the embodiments of the present invention provides a molding method which is carried out by a molding apparatus, which simultaneously implements an injection molding and a surface coating. The method comprises the steps of: curing a molding material filled in at least one molding cavity of a molding mold, the molding material being cured by a change in temperature and the molding mold and the coating mold being placed in one of the first and second molds Included in mold -; Separating the other mold from the forming mold by moving the other one of the first mold and the second mold, wherein the cured molding material comprises at least one of the first and second molds, -; Moving the forming mold and the coating mold such that the position of the coating mold is changed to a position where the forming mold is located; Moving the other of the first mold and the second mold in the direction of the coating mold to draw the cured molding material into at least one coating cavity provided in the coating mold; Filling the coating cavity with a coating material; And curing the filled coating material by irradiating light to the coated material.

A third aspect of embodiments of the present invention provides a molding apparatus that simultaneously implements injection molding and surface coating. The molding apparatus comprising: a first mold; A second mold for providing a pressure in the cavity by engaging with the first mold according to a relative movement with the first mold; And a controller, wherein the controller is configured to: cure a molding material filled in one or more molding cavities of a molding mold, the molding material being cured by a change in temperature, A mold and a mold of one of said second molds; Moving the other one of the first mold and the second mold away from the molding die by moving the other one of the first mold and the second mold, wherein the cured molding material comprises at least one of the first and second molds -;

Moving the forming mold and the coating mold such that the position of the coating mold is changed to a position where the forming mold is located; Moving the other of the first mold and the second mold in the direction of the coating mold to draw the cured molding material into at least one coating cavity provided in the coating mold; Filling the coating cavity with a coating material; And curing the filled coating material by irradiating light to the coated material.

According to the present invention, the injection molding and the surface coating are performed in one mold to simplify the process, thereby improving the productivity, differentiating the coating quality, and establishing an eco-friendly manufacturing environment.

Various aspects are now described with reference to the drawings, wherein like reference numerals are used to refer to like elements throughout. In the following examples, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. However, it will be apparent that such aspect (s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more aspects.
1 is a schematic view for explaining an injection molding apparatus according to an embodiment of the present invention.
FIGS. 2A to 2D are views for explaining the operation of an injection molding apparatus according to an embodiment of the present invention.
3 is a view for explaining the position of an exposure module related to an embodiment of the present invention.
4 and 5 are views for explaining a sealing edge according to an embodiment of the present invention.
6 is a view for explaining an injection molding method according to an embodiment of the present invention.

Various embodiments are now described with reference to the drawings, wherein like reference numerals are used throughout the drawings to refer to like elements. In this specification, various explanations are given in order to provide an understanding of the present invention. It will be apparent, however, that such embodiments may be practiced without these specific details. In other instances, well-known structures and devices are provided in block diagram form in order to facilitate describing the embodiments.

The terms "component," "module," system, "and the like, as used herein, refer to a computer-related entity, hardware, firmware, software, combination of software and hardware, or execution of software. For example, a component may be, but is not limited to, a process executing on a processor, a processor, an object, an executing thread, a program, and / or a computer. For example, both an application running on a computing device and a computing device may be a component. One or more components may reside within a processor and / or thread of execution, one component may be localized within one computer, or it may be distributed between two or more computers. Further, such components may execute from various computer readable media having various data structures stored therein. The components may be, for example, a signal (e.g., a local system, data from one component interacting with another component in a distributed system, and / or data over a network, such as the Internet, Lt; RTI ID = 0.0 > and / or < / RTI >

The description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features presented herein.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

The first mold and the second mold in this specification may correspond to one of the movable mold and the stationary mold, respectively. That is, the first mold and the second mold may be used interchangeably. That is, although the first mold in this specification is expressed as an example for the movable mold for convenience of explanation, it is noted that it may be used as the fixed mold (i.e., the second mold is moved and the first mold is fixed) . In addition, although the second mold in this specification is represented as an example of a fixed side mold for the convenience of explanation, it is noted that it may be used as a movable mold (i.e., the second mold is moved and the first mold is fixed) . For example, the mold on which the core is moved can be referred to as a movable mold regardless of the shape of the molding machine. Further, relative movement in this specification may mean movement / movement of at least one of the first mold and the second mold.

1 is a schematic view for explaining an injection molding apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the molding apparatus 10000 may include a second mold 1000 and a first mold 2000.

The second mold 1000 may include a table 1300, a forming mold 1100 and a coating mold 1200 and the first mold 2000 may include a core 2100. [ In this case, the table 1300 may be a sliding table or a rotating table. In this specification, only one molding mold and one coating mold are shown in the first mold, but this is for convenience of explanation, and a multilayer may be formed through a plurality of molds. For example, molding and coating in a multi-layer structure may be performed in a single molding apparatus by sequentially moving (e.g., relative movement) a plurality of molding molds and a plurality of coating molds. In addition, although one molding step and one coating step are exemplified herein, it is for convenience of explanation only that there may be one or more of the same or different steps between one molding step and one coating step .

The forming mold 1100 may include a forming cavity 1110 into which the forming material can be filled, and the forming material filled in the forming cavity 1110 may be cured by heat.

The coating mold 1200 may include a coating cavity 1210 through which the coating material can be filled, and the coating material filled in the coating cavity 1210 may be cured by light.

The first mold 2000 may include a core 2100 that presses the material filled in the cavity. The filled molding material can be cured while the core 2100 presses the filled molding material and the first mold 2000 can be separated from the molding mold 1100 after the molding material is cured. In this case, the cured molding material may be attached to the core 2100 of the first mold 2000.

After the first mold 2000 is separated, the molding apparatus 10000 moves the molding die 1200 and the molding die 1200 to a position where the molding die 1100 is located, by moving the molding die 1100 and the coating die 1200 Can be changed. In this case, the movement of the forming mold 1100 and the coating mold 1200 may be performed on the table 1300. [

The molding apparatus 10000 can move the first mold 2000 in the direction of the coating mold 1200 to draw the molding material attached to the core 2100 into the coating cavity 1210. [

The coating cavity 1210 can be filled with a coating material, and the molding device 10000 can cure the filled coating material by irradiating the filled coating material with light.

According to one embodiment of the present invention, the injection molding and the surface coating are performed in one mold, thereby simplifying the process, thereby improving the productivity, differentiating the coating quality, and establishing an eco-friendly manufacturing environment.

FIGS. 2A to 2D are views for explaining the operation of an injection molding apparatus according to an embodiment of the present invention.

2B, the core 2100 of the first mold 2000 and the forming mold 1100 of the second mold 1000 may be combined and the forming mold 1100 May be filled with a molding material. In this case, the molding material can be injected by the molding material injection part, and the molding material injection part can be connected to the molding mold 1100.

The molding material may be filled after the core 2100 and the molding mold 1100 are combined and may be filled before the molding mold 1100 and the core 2100 are combined, but is not limited thereto.

The molding material filled in the molding cavity 1110 can be cured. In this case, the material can be hardened by a change in temperature. For example, the molding material may be a thermosetting resin or a thermoplastic resin, and the molding apparatus 10000 may cure the molding material by lowering the temperature of the molding material.

According to one embodiment of the present invention, referring to FIG. 2B, the molding apparatus 10000 can move the first mold 2000 from the second mold 1000. In this case, the cured molding material 3000 may be attached to the core 2100 of the first mold 2000.

The molding apparatus 10000 can change the positions of the molding die 1100 and the coating mold 1200 after the first mold 2000 is separated.

For example, the forming apparatus 10000 can change the position of the coating mold 1200 to the position where the forming mold 1100 was located.

According to one embodiment of the present invention, a change in the position of the forming mold 1100 and the coating mold 1200 may be performed on the table 1300, and the table 1300 may include a sliding table or a rotating table .

For example, a sliding member may be attached to the forming mold 1100 and the coating mold 1200, and the forming mold 1100 and the coating mold 1200 on the sliding table 1300 may be slid and moved by the sliding member . In this case, the sliding member can be operated by the hydraulic cylinder.

 As another example, the table 1300 may be a rotary table, and the molding die 1100 and the coating mold 1200 may be rotated on the rotary table to change the positions of the molding die 1100 and the coating mold 1200 have.

2C, after the positions of the forming mold 1100 and the coating mold 1200 have been changed, the molding apparatus 10000 has moved the first mold 2000 to the second mold (not shown) 1000), the cured molding material can be drawn into the coating cavity 1210 provided in the coating mold 1200.

In this case, the size of the coating cavity 1210 may be larger than the molding cavity 1110. As a result, the size of the coating cavity 1210 may be larger than the cured molding material, and even if the cured molding material is drawn into the coating cavity 1210, there may be a space in which the coating material can be filled.

After the molding material is drawn into the coating cavity 1210, the coating material 1210 may be filled with a coating material. In this case, the filled coating material may comprise a photocurable material.

The molding apparatus 10000 can cure the filled coating material. For example, the molding apparatus 10000 can cure the filled coating material by irradiating the filled coating material with a light beam using the exposure module.

The exposure module may be provided in at least one of the first mold 2000 and the second mold 1000. For example, the exposure module may be provided in the first mold 2000, the second mold 1000, or both the exposure module and the first mold 2000.

In this case, the filled coating material may be an ultraviolet curing material, and the exposure module may irradiate ultraviolet rays. As a result, the filled coating material can be cured by ultraviolet light irradiated by the exposure module. The molding apparatus 10000 can light the exposure module in various patterns. That is, the exposure module may be turned on in a predetermined order.

2d, after the coating material is cured, the first mold 2000 may be spaced apart from the second mold 1000, and the molded and coated product may be removed .

3 is a view for explaining the position of an exposure module related to an embodiment of the present invention.

According to an embodiment of the present invention, the exposure module may be provided in at least one of the first mold 2000 and the coating mold of the second mold 1000.

For example, the exposure module 2600 may be included in the first mold 2000, may be provided in the coating mold 1200 of the second mold 1000, and the first mold 2000 and the coating mold 1200, respectively.

The exposure module means a module for irradiating light. For example, the exposure module may irradiate ultraviolet light, but is not limited thereto.

According to an embodiment of the present invention, when the exposure module 2600 is provided in the first mold 2000, at least a part of the core 2100 of the first mold 2000 may be formed of a light-transmitting material. A portion of the core 2100 may be formed of a light transmissive material such that the light emitted by the first exposure module 2600 may pass through the core to contact the coating material filled in the coating cavity 1210.

According to another embodiment of the present invention, when the exposure module 1600 is provided in the coating mold 1200, at least a portion of the upper support 1700 of the coating mold 1200 may be formed of a light-transmissive material. In this case, the upper support portion 1700 refers to a structure that forms the coating cavity 1210.

At least a portion of the upper support portion 1700 is formed of a light-transmissive material such that the light rays emitted by the second exposure module 1600 can pass through the upper support to contact the coating cavity 1210, The filled coating material may be cured by the light beam irradiated by the second exposure module 1600. [

4 and 5 are views for explaining a sealing edge according to an embodiment of the present invention.

According to one embodiment of the present invention, the cured molding material 3000 may have a sealing edge. The sealing edge is intended to prevent leakage of the coating material and may be provided on at least one side of the cured molding material 3000.

For example, the sealing edge may be provided on one side of the cured molding material 3000, and may be provided on all sides of the upper, lower, left, and right sides, but is not limited thereto.

According to one embodiment of the present invention, the sealing edge can be formed by the space provided in the molding cavity 1110 in the process of curing the molding material. For example, the molding cavity 1110 may have a space where a sealing edge can be formed, and a sealing edge may be formed by hardening the molding material in a space provided in the molding cavity 1110.

According to one embodiment of the present invention, the shape of the formed sealing edge 3300 may be modified by the coating mold 1200. For example, referring to FIG. 4, the initially created sealing edge 3300 may be deformed 3500 by being pressed by the coating mold 3000. 5, the shape of the initially created sealing edge 3300 can be deformed 3510 into a stepped shape by being pressed by the coating mold 3000.

As the shape of the sealing edge 3300 is deformed, the coating material may not leak when the coating material is filled.

6 is a view for explaining an injection molding method according to an embodiment of the present invention.

In step S810, the molding apparatus 10000 can harden the molding material filled in the molding cavity 1110 of the molding die 1100. [

According to one embodiment of the present invention, the molding material can be filled into the molding cavity 1110. [ In this case, the molding material can be filled by the molding material injection part, and the molding material injection part can be connected to the molding mold 1100.

The filling timing of the molding material may be after joining of the core 2100 and the molding die 1100 and may be before the molding die 1100 and the core 2100 are engaged.

The molding material filled in the molding cavity 1110 can be cured. In this case, the molding material can be hardened by a change in temperature. For example, the molding material may be a thermosetting resin or a thermoplastic resin, and the molding apparatus 10000 may cure the molding material by lowering the temperature of the molding material.

In step S820, the molding apparatus 10000 can move the first mold 2000 away from the molding mold 1100 by moving the first mold 2000. [

According to an embodiment of the present invention, the molding apparatus 10000 can move the first mold 2000 from the second mold 1000. [ In this case, the cured molding material 3000 may be attached to the core 2100 of the first mold 2000.

The forming apparatus 10000 can move the forming mold 1100 and the coating mold 1200 so that the position of the coating mold 1200 is changed to the position where the forming mold 1100 was located.

According to an embodiment of the present invention, the molding apparatus 10000 can change the positions of the molding mold 1100 and the coating mold 1200 after the first mold 2000 is separated.

For example, the forming apparatus 10000 can change the position of the coating mold 1200 to the position where the forming mold 1100 was located.

According to one embodiment of the present invention, a change in the position of the forming mold 1100 and the coating mold 1200 may be performed on the table 1300, and the table 1300 may include a sliding table or a rotating table .

For example, a sliding member may be attached to the forming mold 1100 and the coating mold 1200, and the forming mold 1100 and the coating mold 1200 may be slidably moved on the sliding table 1300.

 As another example, the table 1300 may be a rotary table, and the molding die 1100 and the coating mold 1200 may be rotated on the rotary table to change the positions of the molding die 1100 and the coating mold 1200 have.

In step S840, the molding apparatus 10000 moves the first mold 2000 in the direction of the coating mold 1200 to draw the cured molding material into the coating cavity 1210 provided in the coating mold.

According to one embodiment of the present invention, after the positions of the forming mold 1100 and the coating mold 1200 are changed, the molding apparatus 10000 is moved to the second mold 1000 by moving the first mold 2000 to the second mold 1000 The molding material may be introduced into the coating cavity 1210 provided in the coating mold 1200. [

In this case, the size of the coating cavity 1210 may be larger than the molding cavity 1110. As a result, the size of the coating cavity 1210 may be larger than the cured molding material, and even if the cured molding material is drawn into the coating cavity 1210, there may be a space in which the coating material can be filled.

In step S850, the molding apparatus 10000 can fill the coating cavity 1210 with the coating material.

According to one embodiment of the present invention, after the molding material is drawn into the coating cavity 1210, the molding apparatus 10000 may fill the coating cavity 1210 with the coating material. In this case, the coating material may be filled through the coating material injection part, the coating material injection part may be connected to the coating mold 1200, and the filled coating material may include a photocurable material.

In step S860, the molding apparatus 10000 can cure the filled coating material by irradiating the coating material 3400 with light.

According to one embodiment of the present invention, the molding apparatus 10000 can cure the filled coating material. For example, the molding apparatus 10000 can cure the filled coating material by irradiating the filled coating material with a light beam using the exposure module.

The exposure module may be provided in at least one of the first mold 2000 and the second mold 1000. For example, the exposure module may be provided in the first mold 2000, may be provided in the second mold 1000, and may be provided in both the second mold 1000 and the first mold 2000 .

In this case, the filled coating material may be an ultraviolet curing material, and the exposure module may irradiate ultraviolet rays. As a result, the filled coating material can be cured by ultraviolet light irradiated by the exposure module.

According to another embodiment of the present invention, the molding apparatus 10000 may include a control unit (not shown). The control unit may be implemented by one processor, and may be implemented by a plurality of processors, but is not limited thereto. The control unit may be provided inside the molding apparatus 10000 and may be provided outside the molding apparatus 10000 and electrically connected to the molding apparatus 10000. The control unit (not shown) can control the molding apparatus 10000 to operate according to the above-described molding method.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

Claims (9)

1. A molding apparatus for simultaneously performing injection molding and surface coating,
A first mold; And
A second mold for providing a pressure in the cavity by engaging with the first mold according to a relative movement with the first mold;
Wherein the mold of one of the first mold and the second mold comprises:
A molding die comprising at least one molding cavity filled with a molding material, the molding material being cured by a change in temperature and the cured molding material being attached to the core; And
A coating mold comprising at least one coating cavity filled with a coating material, the coating material being cured by light rays;
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The other one of the first mold and the second mold is spaced from the forming mold after the molding material is cured,
After at least one of the first mold and the second mold is spaced apart, at least one of the molding mold and the coating mold moves so that the position of the coating mold is changed to the position where the molding mold was located ,
The other one of the first mold and the second mold moves in the direction of the coating mold so that the cured molding material is drawn into the coating cavity,
Wherein the coating cavity into which the molding material is drawn is filled with the coating material and the filled coating material is irradiated with light to cure the filled coating material,
Molding device. The method according to claim 1,
Wherein the one of the first mold and the second mold further comprises a sliding table,
Wherein the changing of the shaping mold position and the position of the coating mold is realized by sliding the shaping mold and the coating mold on the sliding table,
Molding device. 2. The apparatus of claim 1, wherein the one of the first mold and the second mold further comprises a rotating table,
Wherein the change of the position of the molding die and the position of the coating mold is realized by rotating the molding die and the coating mold on the rotary table,
Molding device. The method according to claim 1,
Wherein at least one of the first mold and the second mold includes an exposure module,
Wherein the coating material is cured by a light beam irradiated by the exposure module,
Molding device. The method according to claim 1,
Wherein the cured molding material has a sealing edge for preventing leakage of coating material on each of both sides,
Molding device. 6. The method of claim 5,
Wherein the shape of the sealing edge is deformed by the coating mold to enable prevention of leakage of the coating material
Molding device. The method according to claim 1,
Wherein a molding material injection part for filling the molding material is connected to the molding mold and a coating material injection part for filling the coating material is connected to the coating mold,
Molding device. A molding method for simultaneously performing injection molding and surface coating, which is performed by a molding apparatus,
Curing a molding material filled in one or more molding cavities of a molding mold wherein the molding material is cured by a change in temperature and the molding mold and the coating mold are included in a mold of one of the first mold and the second mold, ;
Separating the other mold from the forming mold by moving the other one of the first mold and the second mold, wherein the cured molding material comprises at least one of the first and second molds, -;
Moving the forming mold and the coating mold such that the position of the coating mold is changed to a position where the forming mold is located;
Moving the other of the first mold and the second mold in the direction of the coating mold to draw the cured molding material into at least one coating cavity provided in the coating mold;
Filling the coating cavity with a coating material; And
Curing the coated coating material by irradiating light to the coating material;
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Molding method. 1. A molding apparatus for simultaneously performing injection molding and surface coating,
A first mold;
A second mold for providing a pressure in the cavity by engaging with the first mold according to a relative movement with the first mold; And
A control unit;
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The control unit includes:
Wherein the molding material is cured by a change in temperature and the forming mold and the coating mold are included in a mold of one of the first mold and the second mold, -;
Moving the other one of the first mold and the second mold away from the molding die by moving the other one of the first mold and the second mold, wherein the cured molding material comprises at least one of the first and second molds -;
Moving the forming mold and the coating mold such that the position of the coating mold is changed to a position where the forming mold is located;
Moving the other of the first mold and the second mold in the direction of the coating mold to draw the cured molding material into at least one coating cavity provided in the coating mold;
Filling the coating cavity with a coating material; And
Curing the filled coating material by irradiating the coating material with light;
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Molding device.

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