KR102214810B1 - Method for manufacturing pickup roller - Google Patents

Method for manufacturing pickup roller Download PDF

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KR102214810B1
KR102214810B1 KR1020180123669A KR20180123669A KR102214810B1 KR 102214810 B1 KR102214810 B1 KR 102214810B1 KR 1020180123669 A KR1020180123669 A KR 1020180123669A KR 20180123669 A KR20180123669 A KR 20180123669A KR 102214810 B1 KR102214810 B1 KR 102214810B1
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pickup roller
epdm
metal powder
manufacturing
roller
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KR1020180123669A
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KR20200043067A (en
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최경미
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최경미
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
    • C08L3/04—Starch derivatives, e.g. crosslinked derivatives
    • C08L3/08—Ethers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/88—Adding charges, i.e. additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/06—Sulfur
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc

Abstract

본 발명은 현금자동입출금기(Automatic Teller's Machine; ATM}라든지 단독형 지폐계수기 또는 화상형성장치(예컨대, 프린터, 복사기, 팩시밀리 등)에 적용되어 장기간에 걸친 지폐계수 또는 급지작용 시에도 내마모율 및 고마찰계수가 보장되도록 하기 위한 픽업롤러의 제조방법에 관한 것이다.
바람직한 실시예에 따르면, 본 발명의 픽업롤러의 제조방법은 상기 픽업롤러의 내마모율과 고마찰계수를 위한 알루미늄 또는 그 합금과 스테인레스강 또는 그 합금 중에서 선택된 어느 하나 또는 복수의 금속분말을 상기 EPDM에 혼입하기 위한 전처리를 실행하고, 상기 전처리에 의해 금속분말이 함유된 EPDM에 상기 충전제로서 카본블랙, 황가교제, 산화아연(ZnO), 프로세스오일 및 가공조제를 혼합하여 교반하여 그 교반된 상기 금속분말함유 EPDM과 충전제의 혼합물을 픽업롤러성형장치에 의해 성형하게 된다.The present invention is applied to an automatic teller's machine (ATM), a single-type bill counter, or an image forming device (for example, a printer, a photocopier, a facsimile, etc.), so that abrasion resistance and high friction are applied even during long-term bill counting or feeding operation. It relates to a method of manufacturing a pickup roller to ensure counting.
According to a preferred embodiment, the method of manufacturing a pickup roller of the present invention comprises one or more metal powders selected from aluminum or an alloy thereof and stainless steel or an alloy thereof for a wear resistance and a high coefficient of friction of the pickup roller. Pretreatment for mixing is carried out, and carbon black, sulfur crosslinking agent, zinc oxide (ZnO), process oil and processing aid are mixed and stirred as the filler in EPDM containing metal powder by the pretreatment, and the stirred metal powder The mixture of the containing EPDM and the filler is molded by a pickup roller molding machine.

Description

픽업롤러의 제조방법{METHOD FOR MANUFACTURING PICKUP ROLLER}Manufacturing method of pickup roller {METHOD FOR MANUFACTURING PICKUP ROLLER}

본 발명은 픽업롤러의 제조방법에 관한 것으로, 보다 상세하게는 현금자동입출금기(Automatic Teller's Machine; ATM}라든지 단독형 지폐계수기 또는 화상형성장치(예컨대, 프린터, 복사기, 팩시밀리 등)에 적용되어 장기간에 걸친 지폐계수 또는 급지작용 시에도 내마모율 및 고마찰계수가 보장되도록 하기 위한 픽업롤러의 제조방법에 관한 것이다.The present invention relates to a method of manufacturing a pickup roller, and more particularly, it is applied to an automatic teller's machine (ATM), a stand-alone bill counter, or an image forming device (eg, a printer, a photocopier, a facsimile, etc.). The present invention relates to a method of manufacturing a pickup roller to ensure a wear resistance and a high coefficient of friction even during a bill counting or feeding action.

주지된 바와 같이, 지폐의 계수기능을 갖춘 ATM이라든지 단일의 지폐계수기에는 다수매의 지폐를 연속적으로 계수하기 위해 지폐를 낱장씩 연속적으로 공급하기 위한 픽업롤러(급지롤러)가 필수적으로 구성된다.As is well known, an ATM with a bill counting function or a single bill counter is essentially configured with a pickup roller (feeding roller) for continuously feeding bills sheet by sheet in order to continuously count a plurality of bills.

또, 컴퓨터의 주변장치로서 연계되는 화상형성장치로서의 프린터에도 인쇄용지를 인쇄용지카트리지에서 낱장마다 급지하기 위한 픽업롤러(급지롤러)가 구성됨과 더불어 그 인쇄용지를 화상형성구간으로 이송하기 위한 이송롤러(Feeding Roller)가 최소한 하나 이상 구비된다.In addition, a printer as an image forming device linked as a peripheral device of a computer has a pickup roller (feed roller) for feeding each sheet of print paper from the print paper cartridge, and a transfer roller for transferring the print paper to the image forming section. At least one (Feeding Roller) is provided.

또한, 문서의 전송이나 수신을 위한 팩시밀리라든지 문서(이미지)의 입력을 위한 스캐너의 경우에도 전송대상의 문서 또는 인쇄용지를 급지하기 위한 픽업롤러라든지 이송롤러가 구성된다.Also, in the case of a facsimile for transmission or reception of documents or a scanner for inputting a document (image), a pickup roller or a transfer roller for feeding a document or print paper to be transmitted is configured.

통상적으로, 픽업롤러(급지롤러)는 금속 또는 고강도 합성수지제 롤러의 표면에 고무피막이나 우레탄 등의 고무피막을 피복하여 인쇄용지(또는 전송대상의 문서)에 대한 마찰력을 높이게 되는 바, 그러한 픽업롤러(급지롤러)의 탄성재층은 급지(또는 픽업)량이 증가될 수록 그 표면이 마모되어 급지성능(픽업성능)이 열화(劣化)된다.Typically, pickup rollers (feed rollers) increase the friction against printing paper (or documents to be transferred) by coating a rubber film such as a rubber film or urethane on the surface of a roller made of metal or high strength synthetic resin. The surface of the elastic material layer of the (feeding roller) is worn as the amount of feeding (or pickup) increases, and the feeding performance (pickup performance) is deteriorated.

지폐계수기의 경우 픽업롤러가 마모되거나 하여 픽업성능이 열화되면 정확한 계수동작이 불가능하게 되고, 화상형성장치의 경우에도 픽업롤러(급지롤러) 또는 이송롤러의 성능이 열화되면 인쇄용지의 급지동작 시에 스큐(Skew)가 발생되거나 미급지 또는 다수매의 급지와 같은 오작동이 유발된다.In the case of a bill counter, accurate counting operation becomes impossible when the pickup performance deteriorates due to the wear of the pickup roller, and even in the case of an image forming apparatus, if the performance of the pickup roller (feed roller) or the transfer roller is deteriorated, the printing paper is fed. Skew occurs or malfunctions such as non-feeding or feeding of multiple sheets are caused.

그러한 점을 고려하여, 실용신안등록 제 20-0263056호(2002. 01. 21)에는 고속복사기용 급지롤이 개시되어 있는 바, 그 급지롤은 알루미늄제 롤의 표면에 탄성재를 코팅하는 대신에 세라믹 코팅층이 형성된다.Considering such a point, Utility Model Registration No. 20-0263056 (2002. 01. 21) discloses a paper feed roll for a high-speed copier. Instead of coating an elastic material on the surface of an aluminum roll, A ceramic coating layer is formed.

그 세라믹 코팅층은 세라믹이나 텅스텐 합금 등의 경도가 큰 재질의 고운 분말을 용사 코팅하거나, 내마모성 분말의 세라믹 코팅층을 부여한 마찰기지의 이면에 접착제를 도포하고 그 접착면을 이형지로 보호한 상태에서 상기 롤의 원주길이만큼 재단하고나서 상기 이형지를 벗기고 상기 롤에 둘러 붙여줌으로써 형성되는 바, 그러한 세라믹코팅층에 의해서는 종래의 고무 또는 우레탄 등의 탄성재층에 비해 경도가 높으면서도 마찰력과 내마모성도 우수해지도록 한 것이다.The ceramic coating layer is thermal spray coated with fine powder of a material with high hardness such as ceramic or tungsten alloy, or an adhesive is applied to the back of the friction base to which the ceramic coating layer of abrasion-resistant powder is applied, and the adhesive surface is protected with release paper. It is formed by peeling off the release paper after cutting by the circumference of the circumference and attaching it to the roll.The ceramic coating layer has higher hardness compared to a conventional elastic material layer such as rubber or urethane, but has excellent friction and abrasion resistance. will be.

하지만, 그러한 고속복사기용 급지롤의 경우에는 롤의 표면에 세라믹코팅층을 형성하기 위해 세라믹 등의 분말을 용사코팅해야하는 처리가 필요하거나, 일면에 세라믹 코팅층이 형성된 마찰기지를 상기 롤의 원주길이만큼 재단하고 그 마찰기지의 접착면에서 이형지를 제거하고 그 마찰기지를 상기 롤에 접착시키는 과정이 필요하게 되어 전체적으로 픽업롤의 제조과정이 번거롭게 될 뿐만 아니라, 지폐 또는 복사용지의 픽업 작용 도중에 상기 롤에서 상기 마찰기지가 분리될 가능성을 배제할 수 없게 된다.However, in the case of such a paper feed roll for a high-speed copier, a treatment that requires thermal spray coating of powder such as ceramic to form a ceramic coating layer on the surface of the roll is required, or a friction base having a ceramic coating layer formed on one surface thereof is cut by the circumferential length of the roll. In addition, the process of removing the release paper from the adhesive surface of the friction base and bonding the friction base to the roll is required, making the manufacturing process of the pickup roll as a whole, and the roll during the pickup of bills or copy paper. The possibility of separation of the friction base cannot be ruled out.

그에 대해, 실용신안등록 제 20-0174898호(등록일 : 2000. 01. 04)에는 복사기라든지 프린터, 팩스 등의 사무기기 또는 윤전기 등의 각종 인쇄기에서 복사 또는 인쇄 용지를 공급 또는 배출하기 위해 용지접촉면에 분말 성형이 가능한 금속 및 비금속 물질 분말입자(즉, 지립)를 고착한 지립층을 형성하여 용지 급배지 롤러 표면의 열변형이나 마모등으로 인한 용지의 미끄럼이나 잼밍을 방지하도록 한 용지 급배지 롤러가 개시되어 있다.On the contrary, in Utility Model Registration No. 20-0174898 (Registration Date: Jan. 04, 2000), in order to supply or discharge copy or print paper from various printing machines such as copiers, printers, fax machines, or other printing machines, The paper feed roller is designed to prevent paper from slipping or jamming due to thermal deformation or abrasion on the surface of the paper feed roller by forming an abrasive layer in which metal and non-metallic material powder particles (i.e., abrasive grains) are fixed. It is disclosed.

그 용지 급배지 롤러에 따르면, 금속 또는 고무나 수지 재질의 롤러 모재와, 그 롤러 모재의 용지접촉면에 상기 롤러의 용도나 요구 성능에 따라 선별된 다이아몬드, CBN, 세라믹 등의 고경도 비금속 분말이나 텅스텐합금, 철, 알루미늄등의 금속 분말을 도금법, 메트릭스 융착법 또는 접착법등에 의하여 고착시켜 형성된 지립층을 포함하여 구성되고, 다른 방법으로서 지립을 포함하는 고탄성의 고무 밴드를 만들어 롤러 모재의 외주면에 삽입 탄설함으로써 지립층을 형성하게 된다.According to the paper feeding and discharging roller, a roller base material of metal, rubber or resin material, and a high hardness non-metallic powder or tungsten such as diamond, CBN, ceramic, etc., selected according to the purpose or required performance of the roller on the paper contact surface of the roller base material. Consisting of an abrasive layer formed by fixing metal powders such as alloy, iron, aluminum, etc. by plating, matrix fusion, or bonding, and as another method, a highly elastic rubber band containing abrasives is made and inserted into the outer peripheral surface of the roller base material. An abrasive layer is formed by burning tongue.

여기서, 상기한 용지 급배지 롤러에서는 지립을 함유한 지립층이 메트릭스 융착법이라든지 접착법 또는 지립함유밴드의 형태로 성형하여 롤러 모재에 결합하는 방법이 적용되는 바, 실제 지립을 사용하여 융착법이라든지 접착법에 의해 지립층을 형성하는 경우에는 실제 사용 중에 해당하는 롤러로부터 분진의 형태로 박리될 가능성이 높아지게 되고, 지립을 고무 또는 합성수지에 적용하여 지립함유밴드의 형태로 형성하여 롤러의 표면에 삽입설치하는 경우에는 우선 지립함유밴드를 형성하고 그 지립함유밴드를 롤러의 표면에 적용하는 공정이 필요하게 됨에 따라 전체적인 작업공정이 증가되어 불리하게 된다.Here, in the above-described paper feeding and dispensing roller, a matrix fusion method, an adhesion method, or a method of forming the abrasive grain-containing band in the form of an abrasive grain-containing band and bonding it to the roller base material is applied. When the abrasive layer is formed by the adhesion method, the possibility of delamination from the corresponding roller in the form of dust increases during actual use, and the abrasive grain is applied to rubber or synthetic resin to form an abrasive grain-containing band and inserted into the surface of the roller. In the case of installation, as a process of first forming an abrasive grain-containing band and applying the abrasive grain-containing band to the surface of the roller is required, the overall work process is increased, which is disadvantageous.

따라서, 본 발명은 상기한 종래기술의 사정을 감안하여 이루어진 것으로, 비자성 금속분말로서의 알루미늄 또는 그 합금이라든지 스테인레스강 또는 그 합금을 주재료로서의 EPDM(Ethylene Propylene Diene Monomer; EPDM)에 혼합한 롤러형성재료를 준비하여 픽업롤러를 형성함으로써 내마모율과 고마찰계수를 갖는 픽업롤러의 제조방법을 제공함에 그 목적이 있다.Accordingly, the present invention has been made in view of the circumstances of the prior art, and a roller-forming material in which aluminum or its alloy as a non-magnetic metal powder, stainless steel or its alloy is mixed with EPDM (Ethylene Propylene Diene Monomer; EPDM) as a main material. It is an object of the present invention to provide a method of manufacturing a pickup roller having a wear resistance and a high coefficient of friction by preparing a pickup roller.

상기한 목적을 달성하기 위해, 본 발명의 바람직한 실시예에 따르면 폴리머로서의 EPDM(Ethylene Propylene Diene Monomer)과 충전제를 포함하여 지폐계수라든지 급지를 위한 픽업롤러를 제조하는 방법에 있어서, 상기 픽업롤러의 내마모율과 고마찰계수를 위한 금속분말을 상기 EPDM에 혼입하기 위한 전처리를 실행하고, 상기 전처리에 의해 금속분말이 함유된 EPDM에 상기 충전제로서 카본블랙, 황가교제, 산화아연(ZnO), 프로세스오일 및 가공조제를 혼합하여 교반하며, 상기 교반된 EPDM과 충전제의 혼합물을 픽업롤러성형장치에 의해 성형하는 픽업롤러의 제조방법이 제공된다.In order to achieve the above object, according to a preferred embodiment of the present invention, in a method of manufacturing a pickup roller for bill counting or paper feeding, including an EPDM (Ethylene Propylene Diene Monomer) as a polymer and a filler, the inside of the pickup roller Pretreatment for incorporating metal powder for abrasion rate and high coefficient of friction into the EPDM is carried out, and carbon black, sulfur crosslinking agent, zinc oxide (ZnO), process oil, as the filler in EPDM containing metal powder by the pretreatment A method of manufacturing a pickup roller is provided in which a processing aid is mixed and stirred, and the agitated mixture of EPDM and a filler is molded by a pickup roller molding apparatus.

본 발명에 따르면, 바람직하게 상기 금속분말은 비자성 금속분말이고, 그 비자성 금속분말에는 알루미늄 또는 그 합금과 스테인레스강 또는 그 합금 중에서 선택된 어느 하나 또는 복수의 금속분말이 상정된다.According to the present invention, preferably, the metal powder is a non-magnetic metal powder, and any one or more metal powders selected from aluminum or an alloy thereof and stainless steel or an alloy thereof are assumed as the non-magnetic metal powder.

본 발명의 일예에 따르면, 상기 전처리는 300~400㎛ 보다 큰 치수의 금속분말에 액상화 용액을 공급하여 밀링함으로써 100~200㎛로 치수최소화하는 방식과, 상기 100~200㎛치수의 금속분말을 상기 EPDM의 제조 시에 혼입되도록 하는 방식 중 어느 하나가 상정된다.According to an embodiment of the present invention, the pretreatment is a method of minimizing the size to 100 to 200 μm by supplying and milling a liquefied solution to a metal powder having a dimension larger than 300 to 400 μm, and the metal powder having a dimension of 100 to 200 μm. Any one of the ways to be incorporated in the manufacture of EPDM is contemplated.

상기한 본 발명의 바람직한 실시예에 따르면, 지폐를 낱장씩 공급하는 기능이 적용된 지폐계수기라든지 인쇄 또는 복사기능이 적용된 화상형성장치로서의 복사기 또는 프린터 등에서 낱장씩의 용지 공급에 적용되는 픽업롤러(또는 급지롤러)에 금속분말, 바람직하게는 비자성 금속분말을 혼합하여 성형함으로써 내마모성과 마찰계수가 향상되도록 하여 종래의 고무재 또는 우레탄수지에 의해 제조되는 경우에 비해 지폐의 계수 또는 급지 작업에 스큐의 발생이 극력 억제된다.According to a preferred embodiment of the present invention described above, a pick-up roller (or paper feeder) applied to feed sheet by sheet in a bill counter to which a function to feed bills is applied, a photocopier as an image forming device to which a printing or copy function is applied, or a printer. Roller) with metal powder, preferably non-magnetic metal powder, is mixed and molded to improve abrasion resistance and coefficient of friction, so that skew occurs in counting or feeding bills compared to the case of conventional rubber or urethane resins. This is suppressed as much as possible.

이하, 본 발명의 바람직한 실시예에 대해 상세하게 설명한다.Hereinafter, a preferred embodiment of the present invention will be described in detail.

본 발명의 바람직한 실시예에 따르면, 우선 금속분말, 바람직하게는 비자성 금속분말로서 예컨대 알루미늄 또는 그 합금이나 스테인레스강 또는 그 합금 중에서 선택된 어느 하나 또는 복수의 금속분말에 대해 치수의 최소화 및 액상화를 위한 전처리를 수행하게 된다.According to a preferred embodiment of the present invention, first, as a metal powder, preferably a non-magnetic metal powder, for the minimization of dimensions and liquefaction for any one or a plurality of metal powders selected from, for example, aluminum or its alloy, stainless steel or its alloy. Pre-treatment is performed.

그 전처리과정에 따르면, 예컨대 금속분말의 치수가 300∼400㎛ 이상의 금속분말을 전처리용액(대표적으로, 파라핀오일)에 투입하여 예컨대 치수조정을 위한 밀링장치(연마장치) 등에 의해 예컨대 100∼200㎛치수로 최소치수화처리를 수행하게 된다.According to the pretreatment process, for example, a metal powder having a size of 300 to 400 μm or more is added to a pretreatment solution (typically, paraffin oil), and then, for example, 100 to 200 μm by a milling device (polishing device) for size adjustment. The minimum dimensioning process is performed with dimensions.

그러한 전처리과정을 수행함에 따라 상기 금속분말은 산(酸) 또는 염(鹽)에 의해 부식되는 등의 영향이 최소화됨으로써 폴리머로서의 EPDM(Ethylene Propylene Diene Monomer)과의 혼합 시에 폴리머 손상 등이 극력 억제된다.By performing such a pretreatment process, the effect of corrosion of the metal powder by acid or salt is minimized, so that damage to the polymer is suppressed when mixed with EPDM (Ethylene Propylene Diene Monomer) as a polymer. do.

상기 치수의 최소화를 위해 전처리용액(파라핀 오일)을 적용하여 치수의 최소화 및 중성화처리가 실행된 액상형태의 금속분말액은 픽업롤러의 성형을 위해 용융처리된 EPDM에 혼합되어 교반이 이루어지게 되는 바, 그 EPDM에 혼합되는 금속분말액은 그 EPDM용액의 100중량부에 대해 0.6∼0.9중량부의 범위가 상정되어 롤러성형재료를 형성하게 되는 바, 그 롤러성형재료에 포함되는 상기 금속분말의 적용 범위는 EPDM에 의한 픽업롤러의 성형에 영향을 주지 않는 범위 내에서 가변이 가능하게 된다.In order to minimize the above dimensions, a pretreatment solution (paraffin oil) is applied to minimize the dimensions and neutralization of the liquid metal powder is mixed with the melt-treated EPDM for forming the pickup roller to achieve agitation. , The metal powder solution mixed in the EPDM is assumed to be in the range of 0.6 to 0.9 parts by weight per 100 parts by weight of the EPDM solution to form a roller molding material, and the application range of the metal powder included in the roller molding material Can be varied within a range that does not affect the molding of the pickup roller by EPDM.

그에 대해, 본 발명에 따르면 상기한 전처리과정의 다른 예로서는 EPDM의 제조과정에서 상기 최소화된 금속분말을 혼합함으로써 픽업롤러 제조를 위한 금속분말이 함유되도록 해도 된다.On the other hand, according to the present invention, as another example of the pretreatment process described above, the metal powder for manufacturing the pickup roller may be contained by mixing the minimized metal powder in the manufacturing process of EPDM.

즉, EPDM의 제조 과정의 일예에 따르면. 예컨대 헵테인 용액 속에서 뷰부틸알루미늄과 사염화바나듐을 촉매로 사용하여 －50℃에서 에틸렌과 프로필렌을 작용시켜 고무상(狀)의 중합체를 얻고, 그 중합체에 대해 다이사이클로펜타다이엔 등의 제3성분을 가하여 3원 혼성중합시켜 이중결합을 많이 함유하는 터폴리머(3성분 고분자물질)를 형성하게 되는 바, 그 EPDM의 제조 과정에 예컨대 100∼200㎛치수의 금속분말을 혼합함으로써 픽업롤러의 성형을 위한 금속분말함유 EPDM을 얻을 수 있게 된다. That is, according to an example of the manufacturing process of EPDM. For example, by using butylaluminum and vanadium tetrachloride as catalysts in a heptane solution, ethylene and propylene are reacted at -50°C to obtain a rubber-like polymer. A terpolymer (three-component polymer material) containing a lot of double bonds is formed by adding a component to the three-way hybridization. It is possible to obtain EPDM containing metal powder for

상기한 바와 같이, 상기 EPDM에 상기 금속분말이 혼합된 상태로의 전처리과정에 의해 픽업롤러의 성형을 위한 롤러성형재료를 얻고나면 충전제로서 카본불랙 및 황가교제를 혼합하게 된다.As described above, when a roller molding material for forming a pickup roller is obtained by a pretreatment process in which the metal powder is mixed with the EPDM, carbon black and a sulfur crosslinking agent are mixed as a filler.

그 경우, 상기 금속분말이 함유된 EPDM 100wt%부에 대해 상기 충전제로서의 카본블랙은 0.5∼1.5wt% 및 상기 황가교제 4~6wt%의 범위로 혼합된다.In that case, the carbon black as the filler is mixed in the range of 0.5 to 1.5 wt% and the sulfur crosslinking agent 4 to 6 wt% with respect to 100 wt% of the EPDM containing the metal powder.

그와 더불어, 본 발명에 따르면 상기 폴리머(즉, EPDM)의 성형 시간의 조절(가황촉진역할) 및 내열, 열수축, 마찰저항, 자외선 및 가공성의 물성을 향상시키기 위한 금속산화물로서 산화아연(ZnO)이 첨가되는 바, 그 산화아연은 3~5wt%로 설정된다.In addition, according to the present invention, zinc oxide (ZnO) as a metal oxide for controlling the molding time of the polymer (i.e. EPDM) and improving the properties of heat resistance, heat shrinkage, friction resistance, ultraviolet rays and workability When this is added, the zinc oxide is set to 3 to 5 wt%.

또, 상기 산화아연과 더불어, 상기 폴리머(EPDM)를 포함하여 전체 재료의 원활한 분산 및 가공성의 개선과 가황고무의 탄성과 굴절성의 개선, 인장강동 및 내마모성 향상을 도모하기 위해 프로세스 오일(Process Oil)도 첨가되는 바, 그 프로세스 오일은 40~46wt%의 범위로 상정된다.In addition, in addition to the zinc oxide, in order to improve the smooth dispersion and workability of the entire material including the polymer (EPDM), the elasticity and refractive properties of the vulcanized rubber, and to improve the tensile strength and abrasion resistance, Process Oil Also added, the process oil is assumed to be in the range of 40 to 46 wt%.

상기한 바와 같이, 금속분말이 함유된 EPDM에 상기 충전제로서의 카본블랙과 황가교제, 산화아연 및 프로세스오일이 혼합되면 필요에 따라 주지의 가공조제를 적량으로 첨가하여 픽업롤러를 제조하기 위한 성형장치(즉, 금형)에 투입하여 대략 170℃의 온도 조건에서 대략 5분의 시간에 걸쳐 성형함으로써 픽업롤러(급지롤러)를 성형하게 된다.As described above, when carbon black as the filler, sulfur crosslinking agent, zinc oxide, and process oil are mixed with EPDM containing metal powder, a molding apparatus for manufacturing a pickup roller by adding a known processing aid in an appropriate amount as necessary ( That is, the pick-up roller (feeding roller) is molded by putting it into a mold and molding it at a temperature of approximately 170°C over a period of approximately 5 minutes.

따라서, 상기한 과정으로 성형된 본 발명에 따른 픽업롤러는 금속분말이 EPDM에 혼합된 상태로 성형제조되기 때문에 그 금속분말에 의해 내마모성 및 마찰계수가 향상될 뿐만 아니라, 종래의 접착이라든지 코팅에 의해 고경도의 세라믹 또는 금속분말을 롤러 표면에만 형성하는 경우에 비해 고경도 세라믹 분말 또는 금속분말이 분진의 형태로 박리되거나 하는 등의 불리함이 배제될 수 있다.Therefore, since the pickup roller according to the present invention molded by the above process is molded and manufactured in a state where the metal powder is mixed with EPDM, the abrasion resistance and coefficient of friction are improved by the metal powder, as well as by conventional bonding or coating. Compared to the case where the high hardness ceramic or metal powder is formed only on the surface of the roller, disadvantages such as peeling of the high hardness ceramic powder or metal powder in the form of dust can be excluded.

참고로, 상기한 과정에 의해 금속분말이 첨가된 EPDM으로 제조된 본 발명에 따른 픽업롤러와 그 비교대상으로서 상기한 충전제 함유 조건 중 단지 금속분말만이 함유되지 않은 EPDM으로 제조된 픽업롤러의 내구물성(마모율 및 마찰계수, 오염성)을 다음과 같이 평가하여 결과를 확인하였다.For reference, the durability of the pickup roller according to the present invention made of EPDM to which metal powder is added by the above process and the pickup roller made of EPDM that does not contain only metal powder among the above-described filler-containing conditions as a comparison object. The results were confirmed by evaluating the physical properties (wear rate, coefficient of friction, and contamination) as follows.

먼저, 본 발명의 픽업롤러와 비교대상의 픽업롤러의 마모율에 대해서는 마모율측정지그로서 'COMTECH TESTING MACHINES Co.Ltd'의 'QC 619K Taber 마모시험기'를 사용하였고, 평가시험규격은 'KS M 6625'를 적용하고 모의지폐용지를 사용하여 평가하여 그 결과를 하기의 표 1 및 표 2와 같이 확인할 수 있었다.First, for the abrasion rate of the pickup roller of the present invention and the pickup roller to be compared, the'QC 619K Taber Abrasion Tester' of'COMTECH TESTING MACHINES Co.Ltd' was used as a wear rate measuring jig, and the evaluation test standard is'KS M 6625'. Applying and evaluating using mock paper money, the results could be confirmed as shown in Tables 1 and 2 below.

구 분 division 초기무게(g) Initial weight (g) 최종무게(g) Final weight (g) 마모량(g) Abrasion amount (g) 마모율(%) Wear rate (%) 비교대상 1 Target 1 1.1080 1.1080 1.0984 1.0984 0.0096 0.87 0.0096 0.87 비교대상 2 Target 2 1.0738 1.0738 1.0592 1.0592 0.0146 0.0146 1.36 1.36 평 균 Average 1.0909 1.0909 1.0788 1.0788 0.0121 0.0121 1.11 1.11

구 분 division 초기무게(g) Initial weight (g) 최종무게(g) Final weight (g) 마모량(g) Abrasion amount (g) 마모율(%) Wear rate (%) 본 발명 1 Invention 1 1.1015 1.1015 1.0952 1.0952 0.0063 0.0063 0.57 0.57 본 발명 2 Invention 2 1.1076 1.1076 1.0983 1.0983 0.0093 0.0093 0.84 0.84 평 균 Average 1.1046 1.1046 1.0968 1.0968 0.0078 0.71 0.0078 0.71

상기한 평가결과로부터 '표 1'의 본 발명에 따라 금속분말이 함유된 EPDM으로 제조된 픽업롤러의 마모율이 '표 2'의 금속분말이 함유되지 않은 비교대상의 픽업롤러의 마모율에 비해 작게 발생됨을 확인할 수 있다.From the above evaluation results, the wear rate of the pickup roller made of EPDM containing metal powder according to the present invention in'Table 1'was smaller than the wear rate of the pickup roller of the comparison target without metal powder in'Table 2'. can confirm.

다음에, 상기한 본 발명에 따른 픽업롤러와 비교대상의 픽업롤러에 대한 마찰계수는 마찰계수측정지그로서 'I-neoplus'사의 'FCMS170 마찰계수측정기'에 의해 모조지폐용지를 사용하여 평가시험규격 'ASTM D 1894'에 의거하여 평가하였는 바, 그 결과에 의하면 본 발명에 따른 픽업롤러는 1.35~1.37인 반면 비교대상의 픽업롤러는 1.2임을 확인할 수 있었다.Next, the friction coefficient of the pickup roller according to the present invention and the pickup roller to be compared is a friction coefficient measuring jig, which is evaluated using imitation paper money by the'FCMS170 friction coefficient meter' of'I-neoplus'. As a result of evaluation based on'ASTM D 1894', it was confirmed that the pickup roller according to the present invention was 1.35 to 1.37, whereas the pickup roller of the comparison target was 1.2.

그리고, 본 발명에 따른 픽업롤러와 비교대상의 픽업롤러의 오염성은 상기한 마모율 및 마모계수의 측정 후에 육안으로 관찰한 결과 오염은 확인되지 않았다.In addition, contamination of the pickup roller according to the present invention and the pickup roller to be compared was not confirmed as a result of visual observation after the above-described wear rate and wear factor were measured.

상기한 평가결과로부터 본 발명에 따른 금속분말이 함유된 EPDM에 의해 제조된 픽업롤러가 내마모율과 고마찰계수를 갖게 됨을 알 수 있다.From the above evaluation results, it can be seen that the pick-up roller manufactured by the EPDM containing the metal powder according to the present invention has a wear resistance and a high coefficient of friction.

한편, 본 발명은 상기한 실시예로 한정되지 않고 발명의 기술적 요지 및 요점을 이탈하지 않는 범위 내에서 다양한 변경 및 변형이 가능하게 된다.On the other hand, the present invention is not limited to the above-described embodiments, and various changes and modifications are possible without departing from the technical gist and point of the invention.

상기에서, 상기 금속분말에 대해서는 그 치수가 100∼200㎛로 상정되고 있지만, 픽업롤러의 제조 과정에서 필요하다면 그 이하의 치수로 적용하여도 되고, 또 상기한 각 충전제의 혼합비율도 픽업롤러의 물성에 영향을 주지 않는 범위 내에서 가감이 가능함은 물론이다. In the above, the size of the metal powder is assumed to be 100 ~ 200㎛, but if necessary in the manufacturing process of the pickup roller, it may be applied in a smaller size, and the mixing ratio of each of the above fillers is also Of course, it is possible to add or subtract within the range that does not affect the physical properties.

Claims (3)

폴리머로서의 EPDM(Ethylene Propylene Diene Monomer)와 카본블랙, 황가교제, 산화아연(ZnO), 프로세스오일의 충전제를 포함하여 지폐계수라든지 급지를 위한 픽업롤러를 제조하는 방법에 있어서,
상기 픽업롤러의 내마모율과 고마찰계수를 위한 알루미늄 또는 그 합금과 스테인레스강 또는 그 합금 중에서 선택된 어느 하나 또는 복수의 비자성 금속분말을 상기 EPDM에 혼입시키기 위한 전처리를 실행하고,
상기 전처리에 의해 금속분말이 함유된 EPDM에 상기 충전제를 혼합하여 교반하며,
상기 교반된 비자성 금속분말함유 EPDM과 충전제의 혼합물을 픽업롤러성형장치에 의해 성형하는 것을 특징으로 하는 픽업롤러의 제조방법.In the method of manufacturing a pick-up roller for bill counting or paper feeding, including a filler of EPDM (Ethylene Propylene Diene Monomer) as a polymer, carbon black, sulfur crosslinking agent, zinc oxide (ZnO), and process oil,
Performing a pretreatment for incorporating any one or a plurality of nonmagnetic metal powders selected from aluminum or an alloy thereof and stainless steel or an alloy thereof for abrasion resistance and high friction coefficient of the pickup roller into the EPDM,
Mixing and stirring the filler in EPDM containing metal powder by the pretreatment,
A method of manufacturing a pickup roller, characterized in that the agitated mixture of the non-magnetic metal powder-containing EPDM and a filler is molded by a pickup roller molding apparatus. 삭제delete 제 1항에 있어서, 상기 전처리는 300~400㎛ 보다 큰 치수의 비자성 금속분말에 전처리용액을 공급하여 밀링(연마)함으로써 100~200㎛로 치수최소화하는 방식과,
상기 100~200㎛치수의 금속분말을 상기 EPDM의 제조 시에 혼입되도록 하는 방식 중 어느 하나인 것을 특징으로 하는 픽업롤러의 제조방법.The method of claim 1, wherein the pretreatment is a method of minimizing dimensions to 100 to 200 μm by supplying a pretreatment solution to a non-magnetic metal powder having a dimension larger than 300 to 400 μm and milling (polishing),
The method of manufacturing a pickup roller, characterized in that any one of a method of mixing the metal powder having a dimension of 100 to 200 µm when manufacturing the EPDM.
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Citations (3)

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JP2005178021A (en) * 2003-12-16 2005-07-07 Canon Inc Conductive roller, its manufacturing method and image forming apparatus
JP2005227754A (en) 2004-01-13 2005-08-25 Canon Inc Method of manufacturing conductive roller and apparatus for manufacturing conductive roller
KR100582692B1 (en) 2005-03-16 2006-05-23 나노캠텍주식회사 A method for manufacturing antistatic roller

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DE10331785B4 (en) * 2003-07-11 2007-08-23 H. C. Starck Gmbh & Co. Kg Process for producing fine metal, alloy and composite powders
US7462146B2 (en) * 2003-08-29 2008-12-09 Canon Kabushiki Kaisha Roller member, and process for its manufacture

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Publication number Priority date Publication date Assignee Title
JP2005178021A (en) * 2003-12-16 2005-07-07 Canon Inc Conductive roller, its manufacturing method and image forming apparatus
JP2005227754A (en) 2004-01-13 2005-08-25 Canon Inc Method of manufacturing conductive roller and apparatus for manufacturing conductive roller
KR100582692B1 (en) 2005-03-16 2006-05-23 나노캠텍주식회사 A method for manufacturing antistatic roller

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