KR20110026240A - Case insertion type molding method - Google Patents

Case insertion type molding method Download PDF

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Publication number
KR20110026240A
KR20110026240A KR1020090084049A KR20090084049A KR20110026240A KR 20110026240 A KR20110026240 A KR 20110026240A KR 1020090084049 A KR1020090084049 A KR 1020090084049A KR 20090084049 A KR20090084049 A KR 20090084049A KR 20110026240 A KR20110026240 A KR 20110026240A
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KR
South Korea
Prior art keywords
adhesive
exterior member
plastic
metal exterior
molding method
Prior art date
Application number
KR1020090084049A
Other languages
Korean (ko)
Inventor
사이 쿠오-리앙
Original Assignee
주 텡 인터내셔널 홀딩스 리미티드
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 주 텡 인터내셔널 홀딩스 리미티드 filed Critical 주 텡 인터내셔널 홀딩스 리미티드
Priority to KR1020090084049A priority Critical patent/KR20110026240A/en
Publication of KR20110026240A publication Critical patent/KR20110026240A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14065—Positioning or centering articles in the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14065—Positioning or centering articles in the mould
    • B29C2045/14114—Positioning or centering articles in the mould using an adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3481—Housings or casings incorporating or embedding electric or electronic elements

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE: A case-inserting-type molding method is provided to enhance the quality of a product since adhesive is melt, is bonded to plastic to form a plastic layer, and thus the quality of the product is enhanced. CONSTITUTION: A case-inserting-type molding method is as follows. A metallic member(10) is prepared. Adhesive is applied to the inner surface of the metallic member. The metallic member is heated, and thus adhesive is solidified and is bonded to the metallic member. The metallic member is put into a plastic injection mold(40), and thermally melted plastic is injection-molded to adhesive, which has been solidified on the metallic member. The adhesive is melted by the injection-molding temperature of the thermally melted plastic, the plastic and the adhesive are bonded and solidified, and then a plastic layer(50) is formed on the metallic member as solidified plastic. A finished product for the metallic member is discharged.

Description

Case Insertion Molding Method {CASE INSERTION TYPE MOLDING METHOD}

The present invention relates to a case insert molding method, and more particularly, to a case insert molding method that can increase the quality of the product and shorten the manufacturing process effectively.

In general, the case using the metal material in the notebook case is well received by consumers because of its good texture, but the case side of the metal material is difficult to be processed into a structure such as complex bonding, hooking or positioning, and when directly processed into a metal case It is time-consuming and expensive.

Comparative document US Patent No. 6893590 "COUPLING METAL PARTS WITH A PLASTIC MATERIAL" patent is characterized in that the plastic material is bonded to the surface of the metal member by injection molding, and then heated and solidified.

However, in the prior art, the plastic material must be molded into the shape of the plastic material before manufacture, and then the plastic material must be bonded to the surface of the metal member and heated to bond the adhesive to the metal member and the plastic material.

Since the preformed plastic material is easily changed in shape by external factors, it is easy to cause an error when joining the plastic material to the metal surface, and when an error occurs in the inner structure of the notebook case, the joining, locking or positioning Since the structure can not be fixed accurately, such as the quality is caused. It should be noted that in manufacturing a laptop case, if the gross profit margin is only 3% to 5%, even one defective product may be a burden in terms of cost. Increasing gross margin needs to be improved in the above problems.

The technical problem to be solved by the present invention is to provide a case insert molding method for the above problems existing in the prior art.

The main purpose of the case insert molding method of the present invention is to melt the adhesive using the plastic injection temperature to bond the plastic and the adhesive to form a plastic layer to increase the quality of the product and effectively shorten the manufacturing process.

Another object of the case insert molding method of the present invention is to dilute the adhesive in the adhesive coating process, so that the adhesive is easily applied to the metal exterior member.

Another object of the case insert molding method of the present invention is to bond the adhesive and the metal exterior member by heating to volatilize the diluent and solidify the adhesive in the heating process.

Case insert molding method of the present invention,

Preparing a metal facade member,

Applying an adhesive to the inner surface of the metal exterior member,

Heating the metallic exterior member coated with an adhesive to solidify the adhesive and bonding the metallic exterior member to the metallic exterior member;

The metal exterior member is placed in a plastic injection molding mold, and the heat-dissolved plastic is injection molded into the adhesive solidified on the metal exterior member, the adhesive is melted by the heat dissolving plastic injection temperature to bond the plastic and the adhesive, After solidifying, forming the plastic layer on the metallic exterior member with the solidified plastic, and taking out the finished product of the metallic exterior member.

1. According to the case insert molding method of the present invention, by melting the adhesive using the plastic injection temperature to bond the plastic and the adhesive to form a plastic layer to improve the quality of the product and shorten the manufacturing process effectively.

2. According to the case insert molding method of the present invention, in the adhesive application process, a diluent is added to the adhesive to dilute it so that the adhesive can be easily applied to the metal exterior member.

3. According to the case insert molding method of the present invention, in the heating process, the diluent is heated to volatilize, and the adhesive is solidified to bond the adhesive and the metal exterior member.

1 is a manufacturing flow chart of the present invention.

The case insert molding method of the present invention comprises the steps of preparing a metal exterior member, applying an adhesive to the inner surface of the metal exterior member, heating the metal exterior member coated with the adhesive to solidify the adhesive and the metal exterior member and In the process of bonding, the metal exterior member is placed in a plastic injection molding mold, and the heat-dissolved plastic is injection molded into the adhesive solidified on the metal exterior member. After bonding and solidifying the adhesive, the step of forming a plastic layer on the metal facade member with the solidified plastic, and the process of taking out the finished product of the metal facade member.

2 and 3, the inside of the metal exterior member 10 shows a concave shape inwardly, the outer surface of the metal exterior member 10 is the outer surface of the case, the outer surface of the metal exterior member 10 The inner surface can be injection molded into structures such as complex joining, locking or positioning.

The adhesive 20 is applied to the outer edge of the inner surface of the metal exterior member 10, the adhesive 20 is first mixed with a diluent, diluted, and then applied to the metal exterior member 10 again, and the adhesive 20 ) Has a viscosity so that it is easily applied to the inner surface of the metal exterior member (10). Wherein the adhesive 20 is a polyurethane (PU) copolymer, the diluent is methyl ethyl ketone (METHYL ETHYL KETONE, MEK), after diluting the methyl ethyl ketone in the polyurethane copolymer, the adhesive 20 is applied By having the viscosity at room temperature, the thick adhesive 20 has an effect that can be easily applied to enable the adhesive 20 to be applied to the metal exterior member 10.

At the same time, in FIG. 4, the metal appearance member 10 coated with the adhesive 20 is placed in the heating apparatus 30 and heated. The heating temperature of the heating device 30 is 55 to 65 degrees, and the methyl ethyl ketone diluent in the adhesive 20 can be volatilized at a temperature of 55 to 65 degrees, and at the same time, the adhesive 20 of the polyurethane copolymer is solidified. Combined with the metal exterior member (10).

At the same time, in FIG. 5 and FIG. 6, the metal exterior member 10 after the bonding of the adhesive 20 is placed in the injection molding mold 40. The mold 40 may include a mold base 41 and a male mold 42. The male mold 42 may be spotted with the mold base 41, and the mold base 41 may be formed of a metal exterior member. It has a receiving groove 411 for receiving 10, the male mold 42 is provided with a molding portion 421 facing the outer edge of the receiving tank 411, the molding portion 421 is a metal appearance It corresponds to the adhesive 20 of the member 10. The male mold 42 further includes a runner 422 and two release parts 423, and the runner 422 communicates with the molding part 421 to inject plastic from the molding part 421. The release part 423 may extend to an outer surface of the molding part 421.

In the injection molding process, the metal exterior member 10 after bonding the adhesive 20 is placed in the receiving tank 411 of the mold base 41 to position the male mold 42 and the mold base 41. Sporting. The molding part 421 of the male mold 42 corresponds to the adhesive 20 of the outer edge of the metal exterior member 10 and heat-dissolves the plastic A through the runner 422 of the male mold 42. The adhesive after melt-molding the adhesive 20 solidified by the temperature after the injection of the plastic (A) on the side opposite to the metal exterior member 10 while being injection molded into the adhesive 20 solidified on the metal exterior member 10 and melted Since the 20 can be combined with the plastics A, the adhesive 20 and the plastics A are bonded together with the injection of the heat-dissolved plastics A, and then the plastics A are solidified to solidify the plastic layer. To form (50). At the same time, the release part 423 and the plastic layer 50 are bonded together, and the adhesive 20 bonds the metal facade material 10 and the plastic layer 50. Here, the plastic (A) is a thermoplastic plastic, and the temperature at which the plastic (A) is injected into the metal exterior member 10 is 160 to 250 degrees.

7 to 9, when the male mold 42 and the mold base 41 are separated, the metal exterior member 10 is separated from the mold base 41 according to the upward movement of the release part 423. . The release part 423 then pushes down the metal facade member 10 to cut the connection of the release section 423 and the plastic layer 50 to obtain a finished product of the metal facade member 10.

The plastic of the present invention is injection molded on the adhesive 20 of the metal exterior member 10, and at the same time, the adhesive is melted by the plastic injection temperature to bond the plastic and the adhesive 20 and then solidified to form the plastic layer 50. In addition, by being directly combined with the adhesive 20 after injection of the plastic (A), it is possible to increase the quality of the product, shorten the manufacturing process effectively, and lower the manufacturing cost without causing an error in position.

Insertion molding technology in the present invention comprises the steps of preparing a metal exterior member; Applying an adhesive to the inner surface of the metal exterior member; Heating the metal exterior member coated with an adhesive to solidify the adhesive to bond the metal exterior member to the metal exterior member; The metal exterior member is placed in a plastic injection molding mold, and the heat-dissolved plastic is injection molded into the adhesive solidified on the metal exterior member. Forming a plastic layer on the metallic exterior member with the solidified plastic after the solidification; And taking out the finished product of the metal exterior member, thereby increasing the quality of the product and effectively shortening the manufacturing process.

1 is a manufacturing flowchart of the case insert molding method of the present invention.

2 is an explanatory view of a metal exterior member of the case insert molding method of the present invention.

3 is an explanatory view of applying the adhesive of the case insert molding method of the present invention.

4 is a heating explanatory diagram of a case insert molding method of the present invention.

5 is an explanatory diagram for putting in the mold of the case insert-molding method of the present invention.

6 is an explanatory view of injection molding of the case insert molding method of the present invention.

7 is an explanatory view of a finished product of the case inserting molding method of the present invention.

8 is an explanatory view of the appearance of the finished product of the metal exterior member of the case insert molding method of the present invention.

9 is an explanatory cross-sectional view of a finished metal exterior member of the case insert molding method of the present invention.

Attached: US Patent No. 6893590

* Brief description of the drawings

10: metal exterior member

11: groove

20: adhesive

30: heating device

40: mold

41: mold base

411: tank

42: male mold

421: molding part

422: runner

423: mold release part

50: plastic layer

A: plastic

Claims (12)

Preparing a metal exterior member; Applying an adhesive to the inner surface of the metal exterior member; Heating the metal exterior member coated with an adhesive to solidify the adhesive to bond the metal exterior member to the metal exterior member; The metal exterior member is placed in a plastic injection molding mold and the heat-dissolved plastic is injection molded into the adhesive solidified on the metal exterior member. The adhesive is melted by the heat-dissolving plastic injection temperature to bond the plastic and the adhesive, and the plastic and the adhesive are bonded together. After solidifying, forming a plastic layer on the metallic exterior member from the solidified plastic; And And removing the finished product of the metal exterior member. The method of claim 1, In the process after the plastic injection, the adhesive is melted on one side opposite to the metal exterior member by the temperature after the plastic injection to combine with the plastic to form the plastic layer, and the adhesive bonds the metal exterior member and the plastic layer. Characterized in that the case insert molding method. The method of claim 1, Prior to the process of applying the adhesive, a diluent is added to the adhesive and diluted, and then applied to the metal exterior member, case insert molding method. The method of claim 3, wherein The case insert molding method, characterized in that the adhesive is a polyurethane copolymer and the diluent is methyl ethyl ketone. The method of claim 3, wherein In the heating process, the case insert molding method, characterized in that for heating to volatilize the diluent and to solidify the adhesive. The method according to claim 1 or 4, Case heating type molding method, characterized in that the heating temperature is 55 ~ 65 degrees. The method according to claim 1 or 4, A case insert molding method, characterized by heating a metal exterior member in a heating apparatus. The method of claim 1, In the injection molding process, characterized in that the plastic injection temperature is 160 ~ 250 degrees, case insert molding method. The method of claim 1, The case insert molding method, characterized in that the adhesive is applied to the inner outer edge of the metal exterior member. The method of claim 1, In the injection molding process, a metal exterior member is placed in an injection molding mold including a mold base and a male mold, wherein the mold base has a receiving tank for receiving the metallic exterior member, and the male mold has an outer edge of the receiving tank. A molding part is provided opposite to the molding part, wherein the molding part corresponds to the adhesive of the metal exterior member. The method of claim 10, The male mold is further provided with a runner and two release parts, the runner is in communication with the molding portion to allow the plastic to be injected from the molding portion, characterized in that the release portion can extend to the outer surface of the molding portion, Case insert molding method. The method of claim 10, In the injection molding process, characterized in that the plastic is a thermoplastic plastic, the case insert molding method.
KR1020090084049A 2009-09-07 2009-09-07 Case insertion type molding method KR20110026240A (en)

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Application Number Priority Date Filing Date Title
KR1020090084049A KR20110026240A (en) 2009-09-07 2009-09-07 Case insertion type molding method

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Application Number Priority Date Filing Date Title
KR1020090084049A KR20110026240A (en) 2009-09-07 2009-09-07 Case insertion type molding method

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KR20110026240A true KR20110026240A (en) 2011-03-15

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022169308A1 (en) * 2021-02-05 2022-08-11 삼성전자 주식회사 Electronic device comprising housing, and housing manufacturing method
US11685209B2 (en) 2018-12-26 2023-06-27 Hyundai Motor Company Composite material bush

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11685209B2 (en) 2018-12-26 2023-06-27 Hyundai Motor Company Composite material bush
WO2022169308A1 (en) * 2021-02-05 2022-08-11 삼성전자 주식회사 Electronic device comprising housing, and housing manufacturing method

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