1289107 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種印刷設備及印刷方法，且特別是 有關於一種網版印刷設備及網版印刷方法。 【先前技術】 網版印刷技術（Screen Printing Technology)已被廣泛 地應用各種物品之表面印刷加工，這些物品例如是紙張、 皮革、塑膠、電路板等。圖1纟會示為習知之一種網版印刷 方法的示意圖。請參考圖1，在習知之網版印刷技術中， 會將加工件10固定於一工作平台，而加工平台11〇上 方設有一網版120(網版120主要是由一框架122以及一裝 設於框架122上之絲網124所組成，且絲網124上具有一 圖案化網膜）與一刮刀130，其中刮刀丨3〇可將配置於絲網 124上之油墨（Printing迅]〇12由網版12〇之一側12加推移 至另一側120b，使得油墨12可穿過部份絲網124而印刷 至加工件K)，以於加工件10之表面形成一印刷圖案 (Printing Pattern)。 然而，當刮刀130下壓絲網124，並辦 上之油墨12由網j 時，隨著刮刀130 墨推移方向上會產生較大之張力， 性延展幅度， 變。如此一來 並將配置於絲網1241289107 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD The present invention relates to a printing apparatus and a printing method, and more particularly to a screen printing apparatus and a screen printing method. [Prior Art] Screen Printing Technology has been widely used for surface printing processing of various articles such as paper, leather, plastic, circuit boards and the like. Figure 1A shows a schematic diagram of a conventional screen printing method. Referring to FIG. 1, in the conventional screen printing technology, the workpiece 10 is fixed to a working platform, and a screen 120 is disposed above the processing platform 11 (the screen 120 is mainly composed of a frame 122 and a mounting device). The screen 124 is formed on the frame 122, and the screen 124 has a patterned web film and a scraper 130, wherein the scraper 丨3〇 can dispose the ink disposed on the screen 124 (Printing) One side 12 of the plate 12 is pushed to the other side 120b so that the ink 12 can be printed through the partial screen 124 to the workpiece K) to form a printing pattern on the surface of the workpiece 10. However, when the blade 130 is pressed down by the screen 124 and the ink 12 is applied by the net j, a large tension is generated as the blade 130 moves in the direction of the ink, and the width of the slit is changed. So as to be and will be placed on the screen 124
’絲網124即有較大之彈'Screen 124 has a larger bomb
12891071289107
21144twf.doc/006 位於加工件10上夕P < p刷區域，造成加工件10的產品良率 大幅下降。 【發明内容】 本毛明之目的是提供一種網版印刷設備，以提升加工 件之產品良率。 本發明之另一目的是提供一種網版印刷方法，使得網 板上之油墨能精確地刮印至加工件上之印刷區域。 為達上述或是其他目的，本發明提出一種網版印刷設 備，其適於將一油墨印刷至一加工件。此網版印刷設備包 括一機座、一網版與一工作機組，其中機座具有一用以固 定加工件之工作平台，網版是設置於工作平台上方，而油 墨則適於配置於網板上。此外，工作機組包括一機架與二 刮刀組’機架設置於工作平台上，而二刮刀組配設於機架， 且適於在網版上往復移動，以將油墨刮印至加工件，其中 一刮刀組之油墨推移方向與另一刮刀組之油墨推移方向相 反。 在本發明之一貫施例中，上述之機架具有一導引裝 置，而刮刀組配設於該導引裝置。 在本發明之一實施例中，上述之導引裝置為導軌。 在本發明之一實施例中，上述之工作機組更包括一動 力裝置，以帶動刮刀組於機架上移動。 在本發明之一實施例中’上述之刮刀組包括一刮刀固 定座與一固定於刮刀固定座之刮刀，刮刀固定座與機架連 1289107 21144twf.doc/006 接，而刮刀適於在網版上往復移動，以將油墨刮印至加工 件。 在本發明之一實施例中，上述之網版與工作機組連 接。 、 在本發明之一實施例中，上述之網版包括一框架與_ 裝設於框架之絲網，而油墨是配置於絲網上。 一 本發明提出一種網版印刷方法，其包括下列步驟：首 先，將一加工件固定於一工作平台，並將一網版置於加工 件上方。然後，將一油墨配置於網版上。之後，藉由二刮 刀組推移油墨，使該油墨穿過網板而刮印至加工件，以於 加工件上形成一印刷圖案，其中這些刮刀組之油墨推移方 向彼此相反。 在本發明之一實施例中’上述之刮刀組分別由網版之 兩側往網版之中間推移油墨。 在本發明之一實施例中，上述之刮刀組由網版之中間 分別往網版之兩侧推移油墨。 在本發明之一實施例中，上述之網版包括一框架與一 裝設於框架之絲網，而油墨是配置於絲網上。 在本發明之一實施例中，上述之刮刀組在推移油墨之 過程中，刮刀組會下壓絲網，以使絲網與加工件接觸，而 油墨會穿過絲網而刮印至加工件，以於加工件上形成印刷 圖案。 在本發明之網版印刷方法中，會利用二刮刀組以相反 之移動方向來推移油墨（二刮刀組可分別由網版之兩侧往 1289107 21144twf.doc/006 網版之中間推移油墨，或是由網版 :推移油墨)，以降低絲網之彈性二; 至加工件上之印刷區域，= 县r為Ϊίΐΐ之上述和其他目的、特徵和優點能更明顯 易t重，下文特舉較佳實補，並配合所額式 明如下。 【實施方式】 圖2A至至2D、纟會示為本發明較佳實施例之一種網版 印刷方法的流程圖。本實施例之網版印刷方法適於將一油 墨印刷至一加工件，其包括下列步驟。首先，如圖2A所 示，將一例如是電路基板之加工件2〇固定於一工作平台 212 ’並將一網版220置於加工件2〇上方，其中網版220 例如是由一框架222與一裝設於框架222之絲網224所組 成。接著’如圖2B所示，將一油墨22配置於網版220(絲 網224)上之適當位置。 然後’如圖2C所示，藉由二刮刀組234與234,推移 油墨22，使得油墨22穿過絲網224而刮印至加工件20， 以於加工件20上形成一印刷圖案24。其中，絲網224上 例如有一圖案化網膜224a，而油墨22可藉由此圖案化網 膜224a以於加工件2〇上形成印刷圖案24。具體地說，刮 刀組234與234’在推移油墨22之過程中，刮刀組234與 234’會下壓絲網224,油墨22即會受到刮刀組234與234, 1289107 21144twf.doc/006 之壓迫而穿過圖案化網膜224a之空隙，進而印刷至加工件 20上。之後，如圖2D所示，移除刮刀組與網板。如 此，加工件20上即具有印刷圖案24。 值得-提的是，在本實施例中，刮刀組234幻34, 之油墨推移方向彼此相反。舉例來說，本實施例之二刮刀 組234與234’是由網版22〇之中間分別往網版22〇之兩側 220a、22Gb推移油墨22。當然，在另—較佳實施例中，刮 刀組234與234,亦可由網版22〇之兩側島、2通往網 版220之中間推移油墨22。 在本實施例中，當刮刀組234與234,下壓絲網224, 並將配置於絲網224上之油墨22由網版22〇之中間往網版 220之兩侧220a、220b推移時，由於刮刀組2料是由網版 220之中間移動至網版22〇之侧邊22如，而刮刀組是 由網版220之中間移動至網版22〇之侧邊22%。因此，相 較於習知技術，刮刀組234或是234，之油墨推移距離僅為 習知之刮刀其油墨推移距離之二分之―，本實施例之絲網 224其延展幅度即較不明顯。另一方面，由於本實施例之 刮刀組234與234’其油墨推移方向彼此相反，因此刮刀組 234施加於絲網224之力量將與刮刀組234，施加於絲網224 之力量相抵消，使得絲網224不會因刮刀組234與234,其 油墨推移距離之增加而產生彈性延展，絲網224上之圖案 化網膜224a尺寸即不會改變。換言之，本實施例之圖案化 網膜224a可準確地對位於加工件2〇上之印刷區域，油墨 22即可較精確地被印刷於加工件20上，以形成上述之印 1289107 21144twf.doc/006 刷圖案24。 上文所提及之網版印刷方法是描述一網版印刷設備 200(如圖3所示）來對加工件2〇加工的過程。在此，本發 明將對網版印刷设備200作詳細地說明。圖3繪示為本發 * 明較佳實施例之一種網版印刷設備的示意圖。請參考圖 3，本實施例之網版印刷設備2〇〇主要包括一機座21〇、一 網版220與一工作機組230。其中，機座21〇具有一用以 _ 固定加工件20之工作平台212，網版220是設置於工作平 台212上方，而工作機組230則是設置於機座21〇上。 承上所述，工作機組230包括一機架232與二刮刀組 234與234’，機架232是設置於工作平台212上，而二刮 刀組234與234’配設於機架232。在本實施例中，刮刀組 234(234 )例如是由一到刀固定座234a與一到刀234b所組 成，刮刀固定座234b例如是藉由一連動機構236與機架 232連接，而刮刀234b是固定於刮刀固定座234a，且可在 網版220上在復移動，以將油墨22刮印至加工件2〇。其 • 中，當網版印刷設備2〇〇對加工件20進行網板印刷時，^ 刀組234之油墨推移方向與刮刀組234,之油墨推移方向相 反’使件油墨22能精確地被刮印於加工件2〇上之印刷巴 域。 °。 在一較佳實施例中，機架232具有一例如是導軌之導 引I置232a，而刮刀組234與234’可配設於導引裝置 232a。如此，刮刀組234與234,即可藉由滑設於導引裝置 232a來推移配置於網板220上之油墨22。此外，本實施例 10 1289107 21144twf.doc/006 之工作機組230更可包括一動力裝置(未繪示），刮刀組2弘 與234,即可受到動力裝置之帶動而在機架幻2上往復移 動。在另一較佳實施例中，網版220可連接於工作機組 230’而工作機組23〇例如可調整網板22〇之位置，使得網 、 上之圖木化網膜224a(请參考圖2A)能準確地對位 於加工件2G上之印刷區域，進而讓油墨22在此印刷區域 上形成印刷圖案24。21144twf.doc/006 Located in the P < p brush area on the workpiece 10, the product yield of the workpiece 10 is greatly reduced. SUMMARY OF THE INVENTION The purpose of the present invention is to provide a screen printing apparatus to improve the product yield of a workpiece. Another object of the present invention is to provide a screen printing method that allows ink on a screen to be accurately smeared onto a printed area on a workpiece. To achieve the above or other objects, the present invention provides a screen printing apparatus adapted to print an ink to a workpiece. The screen printing device comprises a base, a screen and a working unit, wherein the base has a working platform for fixing the workpiece, the screen is arranged above the working platform, and the ink is adapted to be arranged on the screen. on. In addition, the working unit includes a frame and two scraper sets, the frame is disposed on the working platform, and the two scraper sets are disposed on the frame, and are adapted to reciprocate on the screen to scrape the ink to the workpiece. The ink transfer direction of one of the blade sets is opposite to the ink change direction of the other blade set. In a consistent embodiment of the invention, the frame has a guiding device and the doctor blade is associated with the guiding device. In an embodiment of the invention, the guiding device is a guide rail. In an embodiment of the invention, the working unit further includes a power unit for driving the blade set to move on the frame. In an embodiment of the present invention, the above-mentioned blade set includes a blade holder and a blade fixed to the blade holder, and the blade holder is connected to the frame 1289107 21144twf.doc/006, and the blade is adapted to the screen. Move back and forth to scrape the ink to the workpiece. In one embodiment of the invention, the screen is coupled to the work unit. In an embodiment of the invention, the screen comprises a frame and a screen mounted on the frame, and the ink is disposed on the screen. A present invention provides a screen printing method comprising the steps of first securing a workpiece to a work platform and placing a screen over the workpiece. Then, an ink is placed on the screen. Thereafter, the ink is moved by the two doctor blades, and the ink is slid through the screen to the workpiece to form a printed pattern on the workpiece, wherein the ink shifting directions of the doctor blades are opposite to each other. In an embodiment of the invention, the above-mentioned doctor blade sets are respectively moved from the both sides of the screen to the middle of the screen. In one embodiment of the invention, the blade set is moved from the middle of the screen to the sides of the screen. In one embodiment of the invention, the screen comprises a frame and a screen mounted to the frame, and the ink is disposed on the screen. In an embodiment of the present invention, in the process of moving the ink in the scraper group, the scraper group presses the screen to make the screen contact the workpiece, and the ink passes through the screen and is scraped to the workpiece. In order to form a printed pattern on the workpiece. In the screen printing method of the present invention, the two doctor blades are used to move the ink in opposite directions of movement (the two doctor blades can be respectively moved from the sides of the screen to the middle of the 1289107 21144twf.doc/006 screen, or It is made by screen: push ink) to reduce the elasticity of the screen; to the printing area on the workpiece, = county r is the above and other purposes, features and advantages can be more obvious and easy to weight, the following special Good fortune, and with the amount of the formula as follows. [Embodiment] Figs. 2A to 2D and Fig. 2 are a flow chart showing a screen printing method according to a preferred embodiment of the present invention. The screen printing method of this embodiment is suitable for printing an ink to a workpiece including the following steps. First, as shown in FIG. 2A, a workpiece 2 such as a circuit substrate is fixed to a work platform 212' and a screen 220 is placed above the workpiece 2, wherein the screen 220 is, for example, a frame 222. It is composed of a screen 224 mounted on the frame 222. Next, as shown in Fig. 2B, an ink 22 is placed at an appropriate position on the screen 220 (wire net 224). Then, as shown in Fig. 2C, the ink 22 is moved by the two doctor blades 234 and 234 so that the ink 22 is slid through the screen 224 to the workpiece 20 to form a printed pattern 24 on the workpiece 20. Wherein, the screen 224 has, for example, a patterned web 224a, and the ink 22 can thereby form the printed pattern 24 on the workpiece 2 by patterning the web 224a. Specifically, during the process of moving the ink 22 by the doctor sets 234 and 234', the doctor sets 234 and 234' will press down the screen 224, and the ink 22 will be pressed by the blade sets 234 and 234, 1289107 21144twf.doc/006. The gap passing through the patterned web 224a is printed onto the workpiece 20. Thereafter, as shown in Fig. 2D, the blade set and the screen are removed. Thus, the workpiece 20 has a printed pattern 24 thereon. It is worth mentioning that, in the present embodiment, the blade set 234 is 34, and the ink shifting directions are opposite to each other. For example, the second blade sets 234 and 234' of the embodiment are moved from the middle of the screen 22 to the sides 220a, 22Gb of the screen 22, respectively. Of course, in another preferred embodiment, the doctor blades 234 and 234 may also be moved from the sides of the screen 22 to the intermediate screen of the screen 220. In the present embodiment, when the doctor sets 234 and 234, the screen 224 is pressed down, and the ink 22 disposed on the screen 224 is moved from the middle of the screen 22 to the sides 220a, 220b of the screen 220, Since the blade set 2 is moved from the middle of the screen 220 to the side 22 of the screen 22, the blade set is moved from the middle of the screen 220 to 22% of the side of the screen 22. Therefore, compared with the prior art, the blade shifting distance of the doctor blade set 234 or 234 is only two-half of the ink travel distance of the conventional doctor blade, and the stretch width of the wire mesh 224 of this embodiment is less obvious. On the other hand, since the blade groups 234 and 234' of the present embodiment have ink in the opposite direction to each other, the force applied by the blade set 234 to the screen 224 will be offset by the force applied to the screen 224 by the blade set 234, so that The screen 224 does not elastically expand due to the increase in the ink travel distance of the doctor sets 234 and 234, and the size of the patterned web 224a on the screen 224 does not change. In other words, the patterned web 224a of the present embodiment can accurately print the ink 22 on the workpiece 20 on the printing area on the workpiece 2 to form the above-mentioned printing 1289107 21144twf.doc/006 Brush pattern 24. The screen printing method mentioned above is a process of describing a screen printing apparatus 200 (shown in Fig. 3) for processing the workpiece 2. Here, the present invention will be described in detail with respect to the screen printing apparatus 200. 3 is a schematic diagram of a screen printing apparatus according to a preferred embodiment of the present invention. Referring to FIG. 3, the screen printing apparatus 2 of the embodiment mainly includes a base 21, a screen 220 and a working unit 230. The base 21 has a working platform 212 for fixing the workpiece 20, the screen 220 is disposed above the working platform 212, and the working unit 230 is disposed on the base 21. As described above, the work unit 230 includes a frame 232 and two scraper sets 234 and 234'. The frame 232 is disposed on the work platform 212, and the two scraper sets 234 and 234' are disposed on the frame 232. In the present embodiment, the blade set 234 (234) is composed, for example, of a blade holder 234a and a blade 234b. The blade holder 234b is connected to the frame 232 by a linkage mechanism 236, for example, and the blade 234b. It is fixed to the blade holder 234a and can be moved over the screen 220 to smear the ink 22 to the workpiece 2. In the case where the screen printing apparatus 2 stencils the workpiece 20, the ink transfer direction of the knife group 234 is opposite to that of the blade set 234, so that the ink 22 can be accurately scraped. Printing bar area printed on the workpiece 2 。. °. In a preferred embodiment, the frame 232 has a guide I, 232a, such as a guide rail, and the doctor sets 234 and 234' are associated with the guide 232a. Thus, the blade sets 234 and 234 can be moved by the guide means 232a to move the ink 22 disposed on the screen 220. In addition, the working unit 230 of the embodiment 10 1289107 21144 twf.doc/006 may further include a power device (not shown), and the scraper group 2 and 234 may be driven by the power device to reciprocate on the phantom 2 mobile. In another preferred embodiment, the screen 220 can be coupled to the work unit 230' and the work unit 23 can be adjusted, for example, to the position of the screen 22, such that the net, the upper mesh 224a (see FIG. 2A) The printing area located on the workpiece 2G can be accurately positioned, thereby allowing the ink 22 to form the printed pattern 24 on the printing area.
练上所述，在本發明之網版印刷方法中，會利用二刮 刀組來推移油墨，其巾二刮刀組之油墨推移方向相反（二刮 刀組例如是由網版之兩側往網版之中間推移油墨，或是由 網版之中卩0如惟網版之兩侧神油墨）。相較於習知技 衡’本發明中任_刮刀組之油墨推移距離僅為習知之刮刀 ^油墨推移距離之二分之―，因此本發明之絲網其延As described above, in the screen printing method of the present invention, the ink is moved by the two doctor blades, and the ink of the two blade sets is reversed in direction (the second blade group is, for example, from the two sides of the screen to the screen). In the middle of the ink, or by the screen version of the 如 0 such as the screen of the two sides of the god ink). Compared with the prior art, the ink displacement distance of the _blade group of the present invention is only two-thirds of the conventional blade squeezing distance, and thus the screen of the present invention is extended.
:另外，由於Μ明之二刮刀組其油墨推移；： >目，因此一刮刀組施加於絲網之力量將被另_ ，施加於絲網之力量抵、;肖，絲網即不易產生彈性延展。換 吕之’絲網上之圖案化網膜的尺寸不易改變。如又、 11ΐ^ 5 6 f然本發明α較佳實施例減如上，料並非用以 、疋發明，任何熟習此技藝者，在不脫 ㈣圍内，當可作些許之更動與潤飾，因此本=== 祀圍當視_之申請專利範_界定者為準。 … 11 1289107 21144twf.doc/006 【圖式簡單說明】 ®1繪不為習知之-種網版印刷方法的示意圖。 圖2A至圖2D繪示為本發明較佳實施例之一種網版 印刷方法的流程圖。 圖3繪示為本發明較佳實施例之一種網版印刷設備的 示意圖。 、 [主要元件符號說明】 10、20 :加工件 12、22 :油墨 24 ·印刷圖案 110 ·•工作平台 120 :網版 120a、120b ··網版之兩侧 122 :框架 124 :絲網 130 :刮刀 200 :網版印刷設備 210 :機座 212 ··工作平台 220 :網版 220a、220b ··網版之兩側 222 :框架 224 :絲網 12 1289107 21144twf.doc/006 224a :圖案化網膜 230 :工作機組 232 :機架 232a :導引裝置 234、234’ ：刮刀組 234a :刮刀固定座 234b :刮刀 236 :連動機構 13: In addition, because the ink of the second blade of the Μ 之 ; ; :;: > mesh, so the force applied by a scraper group to the wire mesh will be _, the force applied to the wire mesh,; Extend. The size of the patterned mesh film on the screen of Lu's is not easy to change. For example, the preferred embodiment of the present invention is reduced as above, and is not intended to be used in the invention. Anyone skilled in the art may make some changes and retouching in the absence of (4). This === 祀 当 _ _ _ _ _ _ _ patent application _ defined as the standard. ... 11 1289107 21144twf.doc/006 [Simple description of the diagram] ®1 is not a schematic diagram of a conventional screen printing method. 2A-2D are flow charts showing a screen printing method according to a preferred embodiment of the present invention. 3 is a schematic diagram of a screen printing apparatus according to a preferred embodiment of the present invention. [Major component symbol description] 10, 20: workpiece 12, 22: ink 24 · printed pattern 110 · work platform 120: screen 120a, 120b · · two sides of the screen 122: frame 124: screen 130: Scraper 200: Screen printing apparatus 210: Base 212 · Work platform 220: Screen 220a, 220b · Both sides of screen 222: Frame 224: Screen 12 1289107 21144twf.doc/006 224a: Patterned web 230 : Working unit 232: Rack 232a: guiding device 234, 234': blade set 234a: blade holder 234b: blade 236: linkage mechanism 13