1287510 九、發明說明： 【發明所屬之技術領域】 一種喷墨印表機墨水匣，涉及一種給印表機的打印頭 提供墨源的供墨裝置。 【先前技術】 本申請人在先前一份中國專利號為ZL 2〇〇4 2 〇〇91268 2 的喷墨印表機墨水匣與其他類似的無吸附材料墨水匣一樣 ，解決了有吸附材料墨水匣餘墨量大、回收處理困難及成 本較高、污染環境等問題，而由於該墨水匣中特殊結構的 供墨調節閥’更解決了同類型墨水g的供墨壓力調節機構 結構複雜、難以保證產品品質且製造成本較高等難題。但 =於該墨水E的氣路單向閥由彈性閥帽直接套裝在盒蓋通 氣道端頭構成，要雜作壓力穩定财要較高 配精度及工藝水準。 【發明内容】 本發明的目1287510 IX. Description of the Invention: [Technical Field of the Invention] An ink jet printer ink cartridge relates to an ink supply device that supplies an ink source to a printhead of a printer. [Prior Art] In the previous inkjet printer ink cartridge of the Chinese patent number ZL 2〇〇4 2 〇〇 91268 2, the applicant solved the ink with adsorbent material like other similar non-adsorbent ink cartridges. The problem of large amount of residual ink, difficulty in recycling and high cost, pollution of the environment, etc., due to the special structure of the ink supply regulating valve in the ink cartridge, the ink supply pressure regulating mechanism of the same type of ink g is more complicated and difficult to be solved. To ensure product quality and high manufacturing costs. However, the air check valve of the ink E is directly assembled by the elastic bonnet at the end of the cover air passage, and the pressure is stable and the quality is high. SUMMARY OF THE INVENTION The object of the present invention
之成為墨水匣進氣道上— 可靠地保譜翕玖明曰日n 匣供墨持 個可獨立裝配的通用氣閥部件，It becomes the ink port on the air inlet - reliable protection, the next day, the ink supply unit, and a separately assembled universal valve component.
本發明是這/ 氣調節閥組成的 5 1287510 供墨調節閥由薄膜封閉的閥體等構成—個可獨立裝配的部 件，與儲墨腔出墨口相聯接。閥體上有兩個以上小墨腔， 小墨腔之間由小墨道相連通’至少—個小墨腔裏裝有過渡 網。供墨調節閥進墨口伸入儲墨腔底面上最低的凹部；進 氣調節閥由閥芯、閥座、閥蓋構成一個可獨立裝配的部件， 與墨水n盒蓋上的通氣道端動目聯接，由邮封住通氣口 使閥門處於常閉狀態，閥芯採用彈性材料製成薄頂面帶密 封凸台的帽狀，帽沿由閥座、閥蓋定位並壓緊。閥座設計 成三通式結構，軸向兩端大孔及橫向小孔均以氣道相通。 閥芯設置於閥座下端大孔内，凸台依靠閥芯的彈性壓封於 閥座下端大孔連通橫向小孔的通氣口，形成常閉式閥門。 閥座下端大孔内被閥芯分隔成上下兩個不直接相通的腔 室，下腔室直接與健墨腔相通，上腔室經過帶有上述閥門 的橫向小孔後也與儲墨腔相通，同時，上腔室還經通氣道 後與閥座上端大孔及與盒蓋上的通氣道相通。 改進後的氣路閥門由於採用專門的零件（閥座、閥蓋） 可靠地定位並壓緊彈性閥芯，故在使閥芯的裝配精度要求 降低、裝配工藝簡化的同時，還從結構上克服了以前因裝 配精度要求過高而可能產生的閥門靜態閉合壓力不穩定、 儲墨腔内動態負壓波動幅度過大等現象。 【實施方式】 如第一、第二及第三圖所示，墨水匣由盒體3、盒蓋4 、供墨調節閥2、進氣調節閥1等零部件組成，供墨調節 1287510 閥由閥體、過濾網及前後面薄膜片組成一個可獨立裝配的 邻件，以過盈配合的方式插裝於盒體3的出墨口。供墨調 節閥前後面薄膜片使閥體上的兩個以上的通孔形成小墨腔 5，使閥體隔壁上的凹槽形成細長孔結構的小墨道6，益成 為閥内的阻泥孔，閥體内各小墨腔之間以雙墨道相串連， 確保閥内墨水運動的流暢和連續性，至少一個小墨腔裏裝 有過濾網7。供墨調節閥下方為細長孔結構的進墨口與口 籲 徑較大的出墨口，進墨口伸入盒體儲墨腔底部的凹坑内， 以便充分没取儲墨腔内的墨水。出墨口與墨水匣出墨口相 通。以上結構適當且有效地控制了閥内墨水的流量及壓力 0 : 進氣調節閥1由閥芯8、閥座9、閥蓋1 〇組成一個< . 獨立裝配的部件。圓柱狀閥座9的軸向兩端各開一大孔， 横向開一小孔，三孔均以氣道互通，構成三通式結構。閥 座的上端大孔以過盈配合的方式套裝于盒蓋4的通氣道端 頭。閥芯8設置於閥座下端大孔内，它採用具有彈性的梦 膠材料製造成頂面有凸台的巾自狀。頂面面積較大，厚度較 薄’是閥芯彈性相對較大的部分。凸台位於頂面中央，其 端面面積較小，依靠閥芯頂面的彈性壓封於閥座下端大孔 連通橫向小孔的通氣口端面，形成可靈活開閉的常閉式閥 門。圓柱形帽沿壁厚較大，彈性相對較小，用於定位與密 封’其上方肩台與下方底面分別同閥座孔内階梯端面、閥 蓋10階梯軸端面緊密接觸，使閥芯不能在閥座孔内軸向竄 動。閥芯8使閥座下端大孔被分隔成上下不相通的兩個腔 1287510 至，下腔室直接與儲墨腔相通，上腔室經過帶有上述閥門 的知、向小孔後也與儲墨腔相通，上腔室還經通氣道後與閥 座上端大孔及盒盍上的通氣道相通。從盒蓋通氣道進入上 i至的外界空氣，須當上述閥門開啟後方可經閥門凸台的 上端面進人閥座的橫向小孔，職進人儲墨腔及下腔室， 故在盒蓋通氣道上形成常閉式進氣閥門。 士第一圖表示墨水匣已被安裝到印表機上時的情形，此 時打印頭出墨針刺破密封膠片，插入墨水匣出墨口的密封 =内。在打印頭處於非工作狀態時，進氣調節閥閥門處於 系閉狀4 ’墨水n内外作用於閥門上的各力處於靜力平衡 狀態，儲墨腔内的壓力略低於外界大氣壓力而保持適當的 微負壓狀恶，墨水處於靜平衡，不會經打印頭出墨針向外 漏失。 當打印頭工作時，來自打印頭的吸力，首先使墨水匣 出墨口内形成相對的低壓區，低壓區迅速依次擴展到供墨 凋節閥内、儲墨腔内，調節閥前後表面對稱焊接的兩張薄 膜片同時產生向内凹曲現象，閥内容積減少，壓力增加， 部分閥内墨水流向墨水匣出墨口，因此此時墨流流量會適 當增加。當低壓區擴展到儲墨腔時，進氣調節閥閥門的靜 力平衡狀態被打破，閥外較高的大氣壓力就會克服閥芯頂 面的彎曲變形彈力等阻力，開啟閥門，外界空氣經閥座9 上腔室、閥芯8凸臺上端面進入儲墨腔，此時閥門的閉合 壓力下降至零，閥芯頂面彎曲變形程度隨著儲墨腔内負壓 的&加而增加’而同時閥芯頂面彈力也因彎曲變形程度增 1287510 加而曰由於"亥彈力方向與變形方向相反，故總是反抗 U粒度的增加，也就是說總是反抗著閥門的開啟，結 果使閥Π處於動態平衡狀態，使儲墨腔内的壓力始終保持 在比閥門，啟前稍高但低於外界大氣壓力的水準上。進氣 調節闕就是這樣動態地調節控制错墨腔内的壓力在較恒定 的值上。故當閥門開啟後，儲墨腔内墨水壓力會適當升高， 從而使墨水E内出現從儲墨腔到供墨調節閥，然後到墨水 匣出墨口，最後進入打印頭出墨針的墨流方向。具有變截 f 面墨流通道的供墨調節閥對通過其内的墨流流量及壓力進 一步進行合理調控。 打印頭停止工作時，供墨調節閥前後面薄膜片内凹現 象Ik吸力消失而收細復位，閥内容積增加，壓力減小，閥 内墨水停止外流’且有小量閥外墨水分別從閥的進墨口與 出墨口流入閥内，直至閥内外墨水壓力平衡，適量的墨水 被蓄於供墨調節閥内。同時，進氣調節閥閥門恢復常閉狀 >態，墨水匣内恢復微負壓狀態，墨水建立新的靜平衡狀態 〇 下面通過對進氣調節閥閥芯的受力分析，進一步說明 進氣調節閥的靜動態特性。根據力學平衡方程式，墨水匣 非工作時，閥芯頂面凸台的閉合壓力Fi(也相當於閥口端面 對凸台的支承力）、外界作用於闕芯頂面外表面（面積為Si) 的大氣壓力P〇Sl、儲墨腔内作用於閥芯頂面中央凸臺上端 面（面積為S2)的壓力H、閥芯頂面及其凸台的重力G四 者之和等於閥芯頂面產生彎曲變形量△而存在的彈力ΚΔ 9 1287510 (也相當於閥座、閥蓋對閥β的轴向約束力。κ為彈性係 數，可視為常數）、儲墨腔内作用於閥芯頂面内表面（面積 為Si+S2)的壓力PJSi+SJ、閥Π缝隙内可能存在的墨水張 力F2三者之和，即： F1+P〇Si+P1S2+G=KA+Pi(^i+^2)+^2 由於重力G與張力f2均相對較小，可忽略不計，故由上 式得：The invention is composed of the / gas regulating valve. The 5 1287510 ink supply regulating valve is composed of a membrane-closed valve body or the like, and an independently assembled component is coupled with the ink outlet of the ink storage chamber. There are more than two small ink chambers on the valve body, and the small ink chambers are connected by small ink passages. At least one small ink chamber is provided with a transition net. The ink supply regulating valve inlet extends into the lowest recess on the bottom surface of the ink storage chamber; the intake regulating valve is composed of a valve core, a valve seat and a valve cover, and can be independently assembled, and the air passage end of the ink n-lid cover is moved. Coupling, the valve is sealed by the vent to make the valve normally closed. The valve core is made of elastic material and has a thin top surface with a sealing boss. The brim is positioned and pressed by the valve seat and the valve cover. The valve seat is designed in a three-way structure, and the axial ends of the large holes and the lateral small holes are all communicated by the air passage. The valve core is disposed in the large hole at the lower end of the valve seat, and the boss is elastically sealed on the lower end of the valve seat to communicate with the vent hole of the horizontal small hole by the elastic of the valve core to form a normally closed valve. The large hole in the lower end of the valve seat is divided into two upper and lower chambers which are not directly communicated by the valve core, and the lower chamber directly communicates with the ink chamber, and the upper chamber communicates with the ink storage chamber through the horizontal small hole with the above valve. At the same time, the upper chamber also passes through the air passage and communicates with the upper end of the valve seat and the air passage on the cover. The improved pneumatic valve reliably locates and compresses the elastic valve core by using special parts (valve seat, valve cover), so the assembly precision of the valve core is reduced, the assembly process is simplified, and the structure is overcome. In the past, the static closing pressure of the valve may be unstable due to excessive assembly accuracy requirements, and the dynamic negative pressure fluctuation range in the ink storage chamber is too large. [Embodiment] As shown in the first, second and third figures, the ink cartridge is composed of a casing 3, a cover 4, an ink supply regulating valve 2, an intake regulating valve 1, and the like, and the ink supply is adjusted by 1287510. The valve body, the filter screen and the front and rear film sheets constitute an independently assembled accessory member which is inserted into the ink outlet of the casing 3 in an interference fit manner. The front and rear film sheets of the ink supply regulating valve form two small through holes on the valve body to form a small ink chamber 5, so that the grooves on the wall of the valve body form a small ink path 6 of the elongated hole structure, which is beneficial to the mud in the valve. The hole and the small ink chambers in the valve body are connected in series by double ink passages to ensure smooth and continuous movement of the ink in the valve, and at least one small ink chamber is provided with a filter net 7. Below the ink supply regulating valve is an ink inlet port with an elongated hole structure and an ink outlet port having a larger diameter, and the ink inlet port extends into a recess at the bottom of the ink storage chamber of the casing to sufficiently capture the ink in the ink storage chamber. The ink outlet communicates with the ink outlet. The above structure appropriately and effectively controls the flow rate and pressure of the ink in the valve. 0: The intake regulating valve 1 is composed of a valve body 8, a valve seat 9, and a valve cover 1 &. A separately assembled component. The cylindrical valve seat 9 has a large hole at both ends of the axial direction, and a small hole is opened laterally, and the three holes are communicated by the air passage to form a three-way structure. The upper end of the valve seat is fitted to the air passage end of the cover 4 in an interference fit. The valve core 8 is disposed in the large hole at the lower end of the valve seat, and is made of a resilient rubber material to form a towel having a top surface with a boss. The larger the top surface area and the thinner thickness are the relatively larger portions of the spool. The boss is located at the center of the top surface, and has a small end surface area. The upper end of the valve seat is elastically sealed on the lower end of the valve seat and communicates with the end surface of the vent hole of the horizontal small hole to form a normally closed valve which can be flexibly opened and closed. The cylindrical cap has a large wall thickness and a relatively small elasticity, and is used for positioning and sealing. The upper shoulder and the lower bottom surface are respectively in close contact with the step end surface of the valve seat hole and the stepped shaft end surface of the valve cover 10, so that the valve core cannot be in the valve core. The axial movement of the valve seat hole. The valve core 8 separates the large hole at the lower end of the valve seat into two chambers 1287510 which are not connected to each other, and the lower chamber directly communicates with the ink storage chamber, and the upper chamber passes through the known and small holes with the above valve. The ink chamber communicates, and the upper chamber also communicates with the large hole at the upper end of the valve seat and the air passage on the cassette through the air passage. The outside air entering the upper air from the cover air passage must be inserted into the lateral small hole of the valve seat through the upper end surface of the valve boss when the valve is opened, and the user enters the ink storage chamber and the lower chamber, so the box is opened. A normally closed intake valve is formed on the cover air passage. The first picture shows the situation when the ink cartridge has been mounted on the printer. At this time, the ink jet needle of the print head pierces the sealing film, and the ink is inserted into the seal of the ink outlet. When the print head is in the non-working state, the intake regulating valve is in the closed state. The forces acting on the valve inside and outside the ink are statically balanced, and the pressure in the ink storage chamber is slightly lower than the external atmospheric pressure. Appropriate micro-negative pressure, the ink is in static balance, and will not leak out through the ink head of the print head. When the print head is working, the suction from the print head first causes the ink to exit the ink port to form a relatively low pressure region, and the low pressure region rapidly expands into the ink supply valve and the ink storage chamber, and the front and rear surfaces of the regulating valve are symmetrically welded. At the same time, the two film sheets are inwardly concave, the internal volume of the valve is reduced, the pressure is increased, and the ink in some of the valves flows toward the ink outlet port, so the flow rate of the ink flow is appropriately increased. When the low pressure zone expands into the ink storage chamber, the static balance state of the intake regulator valve is broken, and the higher atmospheric pressure outside the valve overcomes the resistance of the top surface of the spool, such as the bending deformation elastic force, and the valve is opened, and the outside air is opened. The upper end of the valve seat 9 and the upper end of the boss of the valve core 8 enter the ink storage chamber. At this time, the closing pressure of the valve drops to zero, and the degree of bending deformation of the top surface of the valve core increases with the negative pressure in the ink storage chamber. At the same time, the top surface elastic force of the valve core is also increased by 1287510 due to the bending deformation. Because the direction of the spring force is opposite to the deformation direction, it always resists the increase of the U grain size, that is, it always opposes the opening of the valve. The valve Π is in a dynamic equilibrium state, so that the pressure in the ink storage chamber is always maintained at a level slightly higher than the valve, before the start, but lower than the external atmospheric pressure. This is how the intake air regulation 动态 dynamically adjusts the pressure in the wrong ink chamber at a relatively constant value. Therefore, when the valve is opened, the ink pressure in the ink storage chamber will rise appropriately, so that the ink from the ink storage chamber to the ink supply regulating valve appears in the ink E, and then the ink is discharged to the ink outlet, and finally the ink of the ink discharge needle of the printing head is entered. Flow direction. The ink supply regulating valve having the variable-foil ink flow passage further regulates the flow rate and pressure of the ink flowing therethrough. When the print head stops working, the film in the front and back of the ink supply regulating valve disappears and the suction force disappears and the reset is repeated, the internal volume of the valve increases, the pressure decreases, the ink in the valve stops flowing out, and there is a small amount of external ink from the valve. The ink inlet and the ink outlet flow into the valve until the ink pressure inside and outside the valve is balanced, and an appropriate amount of ink is stored in the ink supply regulating valve. At the same time, the valve of the intake control valve returns to the normally closed state, the ink is restored to the micro-negative pressure state, and the ink establishes a new static equilibrium state. The force analysis of the valve core of the intake control valve further explains the intake air. Adjust the static and dynamic characteristics of the valve. According to the mechanical equilibrium equation, when the ink cartridge is not working, the closing pressure Fi of the top surface of the valve plug (also corresponding to the bearing force of the valve port end face to the boss), the external action on the outer surface of the top surface of the core (the area is Si) The atmospheric pressure P〇Sl, the pressure H acting on the upper end surface of the central boss of the valve core (the area is S2), the sum of the top surface of the valve core and the gravity G of the boss are equal to the spool The top surface produces a bending deformation △ and the elastic force Κ Δ 9 1287510 (also equivalent to the axial binding force of the valve seat and the bonnet to the valve β. κ is the elastic coefficient, which can be regarded as a constant), and the ink reservoir acts on the spool The sum of the pressure PJSi+SJ of the inner surface of the top surface (Si+S2) and the ink tension F2 which may exist in the gap of the valve ,, namely: F1+P〇Si+P1S2+G=KA+Pi(^i+ ^2)+^2 Since gravity G and tension f2 are relatively small and negligible, they are obtained from the above formula:
Po-Pi^KA-FO/Si 上式表明：當Ρο-Ρ^ο時，KA-F^o，也就是說當儲 墨腔内的壓力接近外界大氣壓力時，閥芯頂面凸台的閉合 壓力F!接近閥芯頂面彎曲變形產生的彈力。這正是墨水匣 非工作時的情形，而閥芯頂面彎曲變形量△較大，故Fi 較大，閥芯凸台能較可靠、較穩定地閉合閥口。 當墨水匣工作時，閥門開啟，也就是閥門與閥口脫離接觸， Fi=〇，故：Po-P^KA/Si 上式表明··此時儲墨腔内的負壓與閥芯頂面的彎曲變 形量及面積相關聯，與前者成正比，與後者成反比，由於 該結構閥芯頂面面積S〗較大，因此如要維持儲墨腔的負壓 基本不變，可使閥芯頂面產生較大的變形量△，而較大變 形量的閥芯在工作過程中能基本保持彈力穩定，不會出現 歪斜、鬆弛、彈力隨機上下波動幅度過大等現象。所以該 結構閥既在墨水匣非工作時能使閥門較可靠地閉合，又在 墨水匣工作時能較好地調節和穩定儲墨腔内的負壓波動幅 度0 1287510 如上所述’墨水£依靠供墨調節閥内特定結構型式的 墨机通道對墨流流量及壓力的調節作用、調節閥薄膜片類 似於多孔性海綿體的拉伸—收縮變形對墨流的微調作用， 以及常閉式進氣調節閥對儲墨腔内負壓波動幅度的控制， 適日^且適當地調控了流向打印頭出墨針的墨流流量及壓 力。 另外’當印表機顯示墨水匣墨盡時，將墨水匣從印表 鲁 機内取出，從入墨孔處重新加注墨水後，再裝入印表機内 仍可繼續使用。從而可實現迴圈使用、延長墨水匣使用壽 命的目的。 本發明在上文中已以較佳實施例揭露，然熟習本項技 ： 術者應理解的是，該實施例僅用於描繪本發明，而不應解 • 靖為限制本發明之範圍。應注意的是，舉凡與該實施例等 效之變化與置換，均應設為涵蓋於本發明之範疇内。因此 ，本發明之保護範圍當以下文之申請專利範圍所界定者為 • 準。 【圖式簡單說明】 第一圖係墨水匣的縱向剖視圖。 第一圖係墨水匣儲墨腔内設置的進氣調節閥的放大圖。 第三圖是第二圖所示的進氣調節閥A_A方向的剖視圖。 曹 【主要元件符號說明】 1進氣調節閥 1287510 2供墨調節閥 3盒體 4盒蓋 5墨腔 6墨道 7過濾網 8閥芯 9閥座 10閥蓋Po-Pi^KA-FO/Si The above formula shows: when Ρο-Ρ^ο, KA-F^o, that is, when the pressure in the ink reservoir is close to the external atmospheric pressure, the top surface of the valve plug Closing pressure F! Close to the elastic force generated by the bending deformation of the top surface of the valve core. This is the case when the ink cartridge is not working, and the bending deformation amount of the top surface of the valve core is large, so the Fi is large, and the valve plug boss can close the valve port more reliably and stably. When the ink cartridge is working, the valve is opened, that is, the valve is out of contact with the valve port, Fi=〇, so: Po-P^KA/Si The above formula indicates that the negative pressure in the ink storage chamber and the top surface of the valve core The amount of bending deformation is related to the area, which is proportional to the former and inversely proportional to the latter. Since the top surface area S of the structure is large, the spool can be maintained if the negative pressure of the ink reservoir is substantially constant. The top surface produces a large deformation amount △, and the valve body with a large deformation amount can basically maintain the elastic force stability during the working process, and there is no phenomenon such as skew, slack, and excessive fluctuation of the elastic force. Therefore, the structure valve can make the valve close more reliably when the ink cartridge is not working, and can better adjust and stabilize the negative pressure fluctuation range in the ink storage chamber when the ink cartridge is in operation. 0 1287510 As described above, the ink is relied on. The ink passage of a specific structure type in the ink supply regulating valve regulates the flow and pressure of the ink flow, the diaphragm of the regulating valve is similar to the fine-tuning effect of the stretch-shrinkage deformation of the porous sponge on the ink flow, and the normally closed intake air The control valve controls the fluctuation range of the negative pressure in the ink storage chamber, and appropriately regulates the flow rate and pressure of the ink flowing to the ink discharge needle of the print head. In addition, when the printer shows that the ink is empty, the ink cartridge is taken out of the printer, refilled with ink from the ink inlet, and then loaded into the printer for continued use. This makes it possible to use the loop and extend the life of the ink cartridge. The invention has been described above in terms of preferred embodiments, and it is to be understood that this invention is not intended to limit the scope of the invention. It should be noted that variations and permutations that are equivalent to the embodiments are intended to be within the scope of the present invention. Therefore, the scope of protection of the present invention is defined as defined in the scope of the claims below. [Simple description of the drawing] The first figure is a longitudinal sectional view of the ink cartridge. The first figure is an enlarged view of the intake regulator valve provided in the ink reservoir. The third drawing is a cross-sectional view of the intake adjusting valve A_A shown in the second figure. Cao [Main component symbol description] 1 Intake control valve 1287510 2 Ink supply regulating valve 3 Box 4 Cover 5 Ink chamber 6 Ink channel 7 Filter net 8 Spool 9 Seat 10 Valve cover
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