KR100303547B1 - a vacumm molding process for a car trim - Google Patents

a vacumm molding process for a car trim Download PDF

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Publication number
KR100303547B1
KR100303547B1 KR1019990029036A KR19990029036A KR100303547B1 KR 100303547 B1 KR100303547 B1 KR 100303547B1 KR 1019990029036 A KR1019990029036 A KR 1019990029036A KR 19990029036 A KR19990029036 A KR 19990029036A KR 100303547 B1 KR100303547 B1 KR 100303547B1
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South Korea
Prior art keywords
trim
vacuum
mold
surface finish
finishing material
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KR1019990029036A
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Korean (ko)
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KR19990073492A (en
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이동언
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이동언
화신산업 (주)
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Priority to KR1019990029036A priority Critical patent/KR100303547B1/en
Publication of KR19990073492A publication Critical patent/KR19990073492A/en
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Publication of KR100303547B1 publication Critical patent/KR100303547B1/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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/12—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor of articles having inserts or reinforcements
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/264—Auxiliary operations prior to the thermoforming operation, e.g. cutting
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/30—Moulds
    • B29C51/36—Moulds specially adapted for vacuum forming, Manufacture thereof
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/006—Using vacuum
    • 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
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof

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

Abstract

PURPOSE: A vacuum forming method of trim for a vehicle is provided to enhance productivity by minimizing a loss of a surface finishing material and reducing a forming process as well as to increase accuracy of work. CONSTITUTION: A trim is made separately by an injection molding method using a synthetic resin. The trim is placed at a mold composed of a vacuum forming apparatus for attaching a surface finishing material at a surface of the trim. A plurality of projecting hole is formed at the mold, and is communicated to a vacuum apparatus. If a vacuum pressure is applied at the vacuum, air is projected from the projecting hole formed at the mold. A surface finishing material is placed at a surface of the trim to match to an attaching position. A shield material, which is composed of a flexible and non-permeability, is fixed at a clamp. After forming a shielded space at an inside of the mold by using a shield material, the vacuum pressure of the vacuum apparatus is applied, and the surface finishing material is attached at the trim by projecting the air into the shielded space.

Description

자동차용 트림의 진공성형방법{a vacumm molding process for a car trim}Vacuum molding process for car trim {a vacumm molding process for a car trim}

본 발명은 자동차용 트림(각종 트림 및 '필라'를 포함한다.)의 진공성형방법에 관한 것으로서, 더욱 상세히는 각종 자동차에 사용되는 합성수지제 트림에 소재원단을 진공성형하는 신규의 방법을 제공코자 하는 것이다.The present invention relates to a vacuum molding method for trims for automobiles (including various trims and 'pillars'), and more particularly, to provide a novel method for vacuum molding a material fabric on a synthetic resin trim used in various automobiles. It is.

통상적으로 자동차의 내부에 장식마감재로 사용되는 트림(trim)은 합성수지제(PE 등)등의 소재로 사출성형 등의 방법으로 성형되고, 이의 외면부에는 질감효과를 높이기 위하여 폴리에스텔을 기모한 원단층 이면에 폴리우레탄폼을 부착시킨 소재원단(이하 '표면마감재'라 칭한다.)을 진공성형방법에 의해 성형부착하는바, 이에 대하여 보다 구체적으로 설명하면;Normally, the trim used as a decorative finishing material in the interior of a vehicle is made of synthetic resin (PE, etc.), and is molded by injection molding, etc., and the outer surface thereof is made of polyester raised to increase the texture effect. A raw material fabric (hereinafter referred to as a 'surface finish material') having a polyurethane foam attached to the back surface of a single layer is molded and attached by a vacuum molding method, which will be described in more detail;

트림이 성형완료되면 통상 롤(roll) 단위로 공급시판되는 표면마감재를 트림의 외면부에 성형부착하기 위하여 진공성형장치 상의 금형 상에 트림을 안치하되, 이의 표면부에는 접착제를 도포한 후 이의 상부에 표면마감재를 클램프로 고정을 한다.When the trim is completed, the trim is placed on a mold on the vacuum forming apparatus in order to mold-attach the surface finish material, which is usually supplied in a roll unit, to the outer surface of the trim. Fix the surface finish with a clamp.

그리고 히팅수단을 가온시켜 표면마감재를 예열시킨 후 트림이 안치된 금형을 상승시켜 표면마감재와 연접시킨 후 진공장치를 가동하여 금형을 통하여 트림과 표면마감재 상간에 체류하는 에어를 인출시키게 되면 예열상태로 가변이 가능한 표면마감재가 트림의 형상에 부합되게 밀착되면서 트림 표면부에 도포된 접착제에 의하여 트림의 표면부에 접착상태로 성형이 되고, 최종적으로 냉각수를 표면마감재에 살포하여 냉각을 행한 후 클램핑된 표면마감재를 클램핑 상태에서 해제시킨 후 금형을 하강시켜 표면마감재가 성형부착된 트림을 금형으로부터 인출하고 표면마감재중 로스(loss)가 난 부분은 칼 등의 절단도구를 사용하여 절단한 후 제품을 완성하게 되는 것이다.After warming the heating means, the surface finish material is preheated, the trimmed mold is raised to be in contact with the surface finish material, and the vacuum device is operated to draw the air remaining between the trim and the surface finish material through the mold. The variable surface finisher is in close contact with the shape of the trim and is molded in the adhesive state on the surface of the trim by an adhesive applied to the trim surface. Finally, the cooling water is sprayed onto the surface finish to cool and then clamped. After releasing the surface finish material in the clamping state, the mold is lowered, and the trim with the surface finish material is drawn out from the mold, and the part of the surface finish material that has lost is cut using a cutting tool such as a knife to complete the product. Will be done.

이러한 진공성형방법에 의하여 성형되는 자동차용 트림은 다음과 같은 문제를 도외시할 수 없었는바, 우선 표면마감재를 성형코자 하는 제품에 따라 제품의 표면부를 마감성형하기 위하여 상당한 여유를 갖도록 한다. 예를 들면 표면마감을 행하여야 하는 제품이 입체적인 제품일 경우 평면적인 표면마감재가 입체적인 제품의 표면부를 마감하면서 접착성형되기 위해서는 평면상에서 보는 제품의 치수보다는 상당히 여유가 있도록 표면마감재를 준비하여야 하고, 또한 클램프로 표면마감재를 클램핑하기 위해서는 클램핑하기 위한 여유부분을 또한 가져야 하는 것이다. 결국 트림에 표면마감재를 성형부착하기 위해서는 트림의 표면적보다 상당히 넓은 표면마감재를 준비하여야 하고, 하나의 트림이 완성되면 나머지 로스가 난 부분은 폐기시켜 버리게 되어 표면마감재의 낭비가 극심한 실정이고, 이는 제품의 원가상승 요인으로 그대로 적용되는 것이다.Automotive trim molded by this vacuum forming method could not ignore the following problems, first of all to have a considerable margin to finish the surface portion of the product according to the product to be molded surface finish material. For example, if the product to be surface-finished is a three-dimensional product, in order for the flat surface finish material to be adhesively molded while finishing the surface part of the three-dimensional product, the surface finish material should be prepared so that the margin is considerably larger than the size of the product seen on the plane. In order to clamp the surface finish with a clamp, it must also have a margin for clamping. After all, in order to mold-attach the surface finish to the trim, it is necessary to prepare a surface finish that is considerably larger than the surface area of the trim. When one trim is completed, the remaining lossy parts are discarded, which is a waste of the surface finish. This is the same as the cost increase factor.

그리고 또한 진공성형방법에 의하여 표면마감재를 부착함에 있어서 금형을 제작할 때는 보통 하나이상의 제품이 동시에 진공성형이 이루어질 수 있도록 하는데, 진공성형코자 하는 제품의 표면이 요철면으로 이루어질 경우 표면마감재가 진공성형시 트림의 외단부로 밀착되기 위해서는 진공압을 높이 올려 금형과 표면마감재상에 존재하는 에어를 완전히 인출시켜야 하는데, 이러한 경우 에어의 인출로 인하여 표면마감재가 예열된 상태에서 트림이 밀착되면서 강한 진공압 때문에 찢어지는 등의 폐단이 있음은 물론 트림의 마감부에 견고히 밀착되지 못하여 작업자가 일일이 마감단부를 눌러서 접착해주어야 하는 등의 번거로움이 있었던 것이다.In addition, when attaching the surface finishing material by the vacuum molding method, at least one product can be vacuum molded at the same time. When the surface of the product to be vacuum-formed is formed of uneven surface, the surface finishing material is vacuum formed. In order to be in close contact with the outer end of the trim, the vacuum pressure must be raised to completely remove the air present in the mold and the surface finish material. In this case, due to the strong vacuum pressure, the trim is tightly adhered while the surface finish material is preheated due to air extraction. There is a closed end, such as tearing, as well as the end of the trim could not be tightly adhered to the hassle of the operator has to press the end of the adhesive to adhere to each other.

상기한 바와 같은 종래의 자동차용 트림의 진공성형방법은 표면마감재의 로스가 많고 가공비 등을 앙등시켜 제품이 가격경쟁력을 확보하지 못하는 등의 다수의 문제점이 있었던 것이다.The vacuum molding method of the conventional automotive trim as described above has a number of problems, such as the loss of the surface finish material and the processing cost and so on, the product does not secure the price competitiveness.

이에 본 발명에서는 상기한 바와 같은 자동차용 트림에 표면마감재를 진공성형함에 있어서 표면마감재의 로스를 최소화할 수 있으며, 성형공정 등을 줄여 생산성향상 효과를 득할 수 있고, 또한 작업의 정확도 역시 높일 수 있는 자동차용 트림의 진공성형방법을 제공함에 본 발명의 기술적 과제를 두고 본 발명을 완성한 것이다.Accordingly, in the present invention, the loss of the surface finish material can be minimized in vacuum forming the surface finish material on the automotive trim as described above, and the productivity improvement effect can be obtained by reducing the molding process, and also the accuracy of the work can be improved. The present invention has been completed in view of the technical problem of the present invention in providing a vacuum molding method for an automobile trim.

도 1은 본 발명의 바람직한 일실시 예를 보인 제조공정도1 is a manufacturing process showing an embodiment of the present invention

도 2a 내지 도 2f는 본 발명의 방법을 설명키 위한 개략적인 단면도2A-2F are schematic cross-sectional views illustrating the method of the present invention.

도 3은 본 발명이 적용되는 자동차용 트림, 표면마감재, 금형의 분해사시도도 4는 종래의 장치와 방법을 보인 대략적인 측면도Figure 3 is an exploded perspective view of the automotive trim, surface finish, mold, to which the present invention is applied Figure 4 is a schematic side view showing a conventional apparatus and method

* 도면의 주요부분에 사용된 부호의 설명 *Explanation of symbols used in the main part of the drawing

1:트림 2:표면마감재1: trim 2: surface finish

3:진공성형장치 4:금형3: vacuum forming device 4: mould

5:인출공 6:밀폐재5: drawer 6: seal

7:클램프 8:히팅수단7: Clamp 8: Heating means

도 1은 본 발명에서 제공하는 자동차용 트림의 진공성형방법 공정을 블록도로 표시한 것이며, 도 2a 내지 도 2f는 본 발명의 성형방법을 설명키 위하여 진공성형상태를 보인 개략적인 단면도 등으로서, 이를 통하여 본 발명의 성형방법을 상세히 설명하면 다음과 같다.Figure 1 is a block diagram showing the vacuum molding method of the automotive trim provided by the present invention, Figures 2a to 2f is a schematic cross-sectional view showing a vacuum molding state to explain the molding method of the present invention, such as Referring to the molding method of the present invention in detail as follows.

우선 트림(1)을 합성수지제 등의 재료를 사용하여 사출성형 등의 방법으로 기히 별도로 제작한 후 이의 표면에 표면마감재(2)를 진공성형방법으로 부착하기 위하여 진공성형장치(3)를 구성하는 금형(4)에 트림(1)을 안치시킨다. 이때 상기 금형(4)에는 수개의 인출공(5)이 형성되어 진공장치(도시치 아니함)와 연통되어 진공장치에서 진공압을 가하면 금형(4)상에 형성된 인출공(5)으로 에어가 인출되는 것이다.First, the trim 1 is manufactured separately by using a material such as synthetic resin, and the like, by injection molding or the like, and then the vacuum forming apparatus 3 is configured to attach the surface finish material 2 to the surface thereof by a vacuum molding method. The trim 1 is placed in the mold 4. At this time, a plurality of drawing holes 5 are formed in the mold 4 to communicate with a vacuum device (not shown), and when the vacuum pressure is applied in the vacuum device, air is drawn out to the drawing holes 5 formed on the mold 4. Will be.

그리고 상기 금형(4)의 상부에 안치된 트림(1)의 표면부에 표면마감재(2)를 부착위치에 맞게 안치시킨다.Then, the surface finish material 2 is placed in accordance with the attachment position on the surface portion of the trim 1 placed on the upper portion of the mold 4.

금형(4)의 상부에는 재질자체가 신축성을 가지며 공기투과성이 없는 재질(예를 들면 비닐재 등)로 이루어지는 밀폐재(6)를 클램프(7)상에 고정시킨다.On the upper part of the mold 4, the sealing material 6 made of a material having elasticity and no air permeability (for example, vinyl material) is fixed on the clamp 7.

히팅수단(8)을 진공성형장치(3)에서 작동버튼을 눌러 금형(4)의 상부로 이동시켜 트림(1)의 상부에 안치된 표면마감재(2)를 예열시킨다. 예열이 완료되면 히팅수단(8)을 원위치시킨 후 금형(4)을 상승시키고, 동시에 밀폐재(6)가 고정된 클램프(7)를 하강시켜 밀폐재(6)에 의해 금형(4)의 내부가 완전히 폐쇄공간이 되도록 한다.The heating means 8 is moved to the upper portion of the mold 4 by pressing the operation button in the vacuum forming apparatus 3 to preheat the surface finish material 2 placed on the upper portion of the trim 1. When the preheating is completed, the heating means 8 is returned to its original position, the mold 4 is raised, and at the same time, the clamp 7 having the sealant 6 fixed thereon is lowered, and the inside of the mold 4 is closed by the sealant 6. Should be completely enclosed space.

상기한 과정이 완료되면 진공장치에서 진공압을 가하여 금형(4) 내부의 에어를 인출시키게 되면 밀폐재(6)에 의해 금형(4) 내부가 폐쇄공간을 형성하기 때문에 밀폐재(6)가 압축되면서 금형(4)에 밀착상태로 오므라들고 더불어 밀폐재(6)와 함께 표면마감재(2) 역시 금형(4)에 밀착되면서 접착제에 의하여 트림(1) 표면에 성형부착되는 것이다.When the above process is completed, when the air inside the mold 4 is drawn out by applying a vacuum pressure in the vacuum apparatus, the sealing material 6 is compressed because the inside of the mold 4 forms a closed space by the sealing material 6. While being in close contact with the mold 4, the surface finish material 2 together with the sealing material 6 is also adhered to the mold 4 while being molded and attached to the surface of the trim 1 by an adhesive.

상기한 과정이 종료되면 진공장치의 작동을 중지하고 클램프(7)를 상승시키면 밀폐재(6)는 재질특성에 의하여 압축전 상태로 복원되면서 표면마감재(2)로부터 분리되고 작업자가 금형(4)에 결합된 트림(1)을 분리하면 트림(1)의 표면에는 표면마감재(2)가 견고하게 부착된 제품이 성형완료되고 제품을 금형(4)으로부터 인출하면 되는 것이다.When the above process is completed, the operation of the vacuum apparatus is stopped and the clamp 7 is raised, and the sealing material 6 is recovered from the surface finish material 2 while being restored to the state before compression by the material property, and the worker removes the mold 4. When the trim 1 is coupled to the surface of the trim 1, the surface finishing material 2 is firmly attached to the surface of the molded product is completed, and the product may be withdrawn from the mold (4).

도면중에서 부호 9는 승강실린더를 도시한 것이다.In the figure, reference numeral 9 denotes a lifting cylinder.

이상에서 상세히 설명한 바와 같이 본 발명에서 제공하는 자동차용 트림의 진공성형방법은 트림(1)의 표면에 표면마감재(2)를 진공성형함에 있어서 트림(1)의 표면마감부위에 맞게 사전에 표면마감재(2)를 재단하여 진공성형장치(3)를 구성하는 금형(4)내에 트림(1)을 안치하고 이의 상부에 규격에 맞게 재단된표면마감재(2)를 안치후 금형(4) 내부를 폐쇄공간으로 할 수 있는 밀폐재(6)를 하강시켜 금형(4) 내부를 밀폐시킨 후 진공장치의 진공압을 가하여 금형(4) 내부 에어를 인출하여 표면마감재(2)가 트림(1)에 부착되도록 함으로서 표면마감재의 손실, 즉 소재의 로스를 최소화할 수 있으며, 작업공정 또한 대폭 줄여 원가절감에도 크게 기여할 수 있고, 또한 표면마감재(2)가 트림(1)에 부착시 마감단부 역시 깨끗하게 부착될 수 있는 등 그 기대되는 효과가 다대한 발명이다.As described in detail above, in the vacuum molding method of the automotive trim provided by the present invention, in the vacuum molding of the surface finish material 2 on the surface of the trim 1, the surface finish material in advance is matched to the surface finish portion of the trim 1. (2) The trim (1) is placed in the mold (4) forming the vacuum forming apparatus (3), and the surface finishing material (2) cut to the standard is placed on the upper part thereof, and then the inside of the mold (4) is closed. The sealing member 6, which can be used as a space, is lowered to seal the inside of the mold 4, and then the vacuum pressure of the vacuum apparatus is applied to draw the air inside the mold 4 so that the surface finish material 2 is attached to the trim 1. By minimizing the loss of the surface finish material, that is, the loss of the material, the work process can be greatly reduced, which can greatly contribute to the cost reduction, and when the surface finish material (2) is attached to the trim (1), the finishing end is also cleanly attached. Can be expected that its expected effect For the invention.

Claims (1)

통상의 자동차용 트림에 표면마감재를 진공성형함에 있어서;Vacuum forming a surface finish to a conventional automotive trim; 트림의 표면마감부위에 맞게 사전에 표면마감재를 재단하는 과정과,The process of cutting the surface finish material in advance to fit the surface finish of the trim, 진공성형장치의 금형내에 트림을 안치하고 상기 재단된 표면마감재를 안치하는 과정,Placing the trim in the mold of the vacuum forming apparatus and placing the cut surface finish material; 상기 금형 내부를 밀폐재를 사용하여 폐쇄공간으로 만든 후 진공장치의 진공압을 가하여 폐쇄공간내의 에어를 인출하여 표면마감재가 트림에 부착되도록 하는 과정을 특징으로 하는 자동차용 트림의 진공성형방법.And making the inside of the mold into a closed space by using a sealing material, and then applying a vacuum pressure of a vacuum apparatus to draw air in the closed space so that the surface finish material is attached to the trim.
KR1019990029036A 1999-07-13 1999-07-13 a vacumm molding process for a car trim KR100303547B1 (en)

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