• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a cleaning apparatus of an inkjet printer head, which simplifies a pumping structure for generating suction negative pressure and at the same time makes it possible to easily switch the negative pressure supply paths to the mono cap and the color cap by electrical switching means. As a means for achieving the present invention, the driving force is generated by the driving means 10 by an electrical signal, the driving force is decelerated through the power transmission means 20, and the reduced driving force is received and the pumping means 30 is received. The drum 32 and the rotating roller 33 of the rotating roller 33 generate the suction negative pressure, and the ink sucks the ink from the head through the ink suction means 50 and the switching means 40 by the suction negative pressure at this time. Reduces and assembles parts by allowing the discharge port to be cleaned, allowing the suction negative pressure to be generated and the selection of the suction path independently. To ensure possible to achieve improved economy, performance and reliability of the improvement.
    公开号:KR20000046011A
    申请号:KR1019980062672
    申请日:1998-12-31
    公开日:2000-07-25
    发明作者:이재철
    申请人:이형도；삼성전기 주식회사；
    IPC主号:
    专利说明:

    Cleaning device for inkjet print head
    The present invention relates to a head cleaning device for preventing clogging of a nozzle, which is an ink ejection hole of a head, in an inkjet printer, and more particularly, by selectively pumping mono ink and color ink by one pumping and switching means. A cleaning device of an inkjet print head which enables the clogging of a nozzle to be eliminated by less driving load and a simplified configuration.
    In general, an inkjet printer is a device that prints by allowing ink to be discharged in the form of droplets.
    At this time, in the nozzle of the head for ejecting ink, the ink is hardened while being in contact with the outside air for a long time, thereby causing a nozzle clogging phenomenon that is not ejected even when the head is driven.
    When the nozzle is clogged and the printing is not performed properly, it is the head cleaning device that the printer has recently been equipped to solve the printer itself.
    The head cleaning device is usually provided with a head carriage bottom at a position where the head carriage is transferred to one side of the printer, and the configuration thereof is as shown in FIG.
    As a driving means, a step motor 100 capable of normal and reverse rotation is generally used, and the power from the step motor 100 is decelerated through a plurality of gears 200 engaged with each other to form a pump including a first pump and a second pump. Forward to 300.
    As shown in FIG. 7, the pumping part 300 includes a case 310 that covers the outside and a first pump 320 and a second pump 330 provided to correspond to each other on both sides of the case 310. As a configuration, the first pump 320 and the second pump 330 have shapes corresponding to each other, and long holes are formed in the drums 321 and 331.
    8A and 8B illustrate side cross-sectional views of the first pump 320 and the second pump 330 of the pumping unit 300, and the long holes 323 (1) of each drum 321, 331 ( 333 is formed, and a pair of rotary rollers 322 and 332 are supported by each long hole 323 and 333 so that a movement is possible.
    In addition, along the inner circumferential surface of the case 310, the respective tubes 324 and 334 are formed to be wound to the outside of the rotary rollers 322 and 332 by the negative pressure to introduce the mono ink or the color ink.
    Meanwhile, FIG. 9 illustrates the ink suction unit 400 connecting the respective tubes 324 and 334 in the first pump 320 and the second pump 330.
    The ink suction unit 400 is largely formed as a slider 410 and a guide 420 for guiding the slider 410 horizontally or vertically. The slider 410 has an ink cap for sucking mono ink and color ink, respectively. 411 is provided.
    As shown in FIG. 10A, when the head carriage 500 equipped with the mono and color heads 510 is finished, the head cleaning device is moved from the printing area to the upper portion of the ink suction unit 400 as shown in FIG. 10A. The slider 410 is moved to one side while the stopper 412 protruding upward from one end of the slider 410 is caught by the head carriage 500.
    At this time, the slider 410 is raised along the guide hole 421 formed in the guide 420, and when the slider 410 is raised, the mono and color ink caps respectively provided in the slider 410 as shown in FIG. 411 is in close contact with the mono and color head 510 of the head carriage 500, respectively.
    In this state, when the electric operation signal is given, the step motor 100 starts to drive and transmits power to the pumping unit 300 through the plurality of reduction gears 200.
    In the pumping unit 300, the drums 321 and 331 on both sides are simultaneously rotated in the same direction, and at this time, the rotary roller 323 supported by the long hole 322 in the drum 321 of the first pump 320. When moved to the outside along the long hole 322 to rotate with the drum 321 while pressing the tube 324 supported on the case 310 to form a negative pressure in the tube 324.
    At this time, the rotating roller 333 provided on the drum 331 of the second pump 330 provided correspondingly on the other side, even if the drum 331 rotates at the same time as the drum 321 of the first pump 320 Since it stays at the inner end of 332 as it is, only the idling continues without being in contact with the tube 334 supported by the case 310.
    If the step motor 100 is to rotate in reverse, the first pump 320 is idle as opposed to the case described above, the negative pressure for sucking the ink is formed by the second pump (330).
    When the suction negative pressure of the ink is formed in the mono tube 324 or the color tube 334, the negative pressure is supplied to the ink cap 411 of the slider 410 to which the respective tubes 324 and 334 are connected to the ink cap 411. ) And the ink ejection opening of the blocked head 510 is sucked by the ink from the mono or color head 510 which is already in close contact.
    However, in the head cleaning apparatus described above, the pumping unit 300 has a very complicated structure, and since the step motor 100 must be used as a forward and reverse rotation, there is an uneconomical disadvantage in that the manufacturing cost is high.
    In addition, since the rotary rollers 322 and 332 must move along the long holes 323 and 333 in the drums 321 and 331, the wear of the long holes 323 and 333 is severe and the ink suction force decreases during long-term use. It may also result.
    In particular, since the mono- and color inks are made of a complicated structure to selectively suck, there is a problem in that the driving load is increased so that the high-power step motor 100 is required.
    Accordingly, the present invention is to solve the above problems, the present invention is to simplify the pumping structure for generating the suction negative pressure, and at the same time to be able to switch the negative pressure supply path to the mono-cap and the color cap simply by electrical switching means The main purpose is to reduce required parts and improve assembly.
    In addition, the present invention has another object to improve the reliability of the performance while being economical to reduce the driving load by simplifying the pumping structure.
    1 is a plan view schematically showing the configuration of an inkjet printer head cleaning apparatus according to the present invention;
    Figure 2 is a side cross-sectional view showing an embodiment of the pumping means according to the invention,
    3 is a detailed cross-sectional view showing another embodiment of the pumping means according to the present invention;
    Figure 4a, 4b is a cross-sectional view showing the operating state of the switching means according to the invention,
    5 is a detailed cross-sectional view showing the ink suction means according to the present invention;
    6 is a plan view schematically showing the configuration of a conventional inkjet printer head cleaning apparatus;
    7 is a detailed cross-sectional view of the conventional pumping unit,
    Figure 8a, 8b is a side cross-sectional view showing the operating state of the conventional pumping unit,
    9 is a perspective view of a conventional ink suction unit,
    10A and 10B are operation state diagrams of a conventional ink suction unit.
    <Explanation of symbols for main parts of drawing>
    10: drive means 11: step motor
    20: power transmission means 21: gear
    30: pumping means 32: drum
    33: rotating roller 34: tube
    40: switching means 41: solenoid
    42: switching valve 50: ink suction means
    In order to achieve the above object, the present invention includes a drive means for generating power by an electrical signal;
    Power transmission means for transmitting while decelerating power from the driving means;
    Pumping means for generating suction negative pressure by a driving force transmitted from said power transmission means;
    Switching means for selectively switching a supply path of negative pressure by an electrical signal;
    It is characterized by a configuration provided with ink suction means for drilling the ink discharge port of the head blocked by the negative pressure supplied while being in close contact with the head by the transfer of the head carrier.
    Hereinafter, described in detail with reference to the accompanying drawings, preferred embodiments of the present invention.
    Figure 1 is a plan view schematically showing the overall configuration of the head cleaning apparatus according to the present invention, the present invention is largely driven means 10, power transmission means 20, pumping means 30, switching means 40 and ink It is a structure comprised as the suction means 50. FIG.
    The driving means 10 is composed of a step motor 11 that generates a driving force while rotating by an electrical signal, the step motor 11 may use a two-way drive motor capable of forward and reverse rotation, but considering economical one-way It is more preferable to use a drive motor.
    The power transmission means 20 is a structure that transmits power by connecting a plurality of gears 21 having different gear ratios as before, and serves to reduce and transmit the driving force in the driving means 10.
    As shown in FIG. 2, the pumping means 30 is rotatably provided with only one drum 32 in the case 31, and a tube fixed along the inner circumferential surface of the case 31 on the outside of the drum 32. 34 is wound and fixed, so that the drum 32 has two rotating rollers 33 corresponding to each other.
    At this time, the rotary roller 33 is to maintain the at least one rotary roller 33 as always pressing the tube 34 provided on the outside of the drum 32, the rotary roller 33 can be rotated as before To be laid.
    Therefore, since the rotary roller 33 in contact with the tube 34 is provided to rotate by itself in a fixed state on the drum 32, there is little friction force with the tube 34.
    Meanwhile, in the pumping means 30, the drum 32 may form a gear on the outer circumferential surface as shown in FIG. 3 to engage the final gear of the power transmission means 20 so that at least one gear or drum may be omitted.
    As shown in FIG. 4, the switching means 40 connects the solenoid 41 on one side and the switching valve 42 on the other side so that the switching valve 42 switches by electric operation of the solenoid 41. Structure.
    That is, the plunger 41a of the solenoid 41 is integrally connected with the spool 42a in the switching valve 42 so that the passage of the negative pressure and the ink is switched by sliding the spool 42a by the operation of the solenoid 41. It is.
    One end of the tube into which the mono ink flows in and the one into which the color ink flows into the switching valve 42 are respectively connected, so that only one kind of ink passes through the switching valve 42 by the operation of the solenoid 41. .
    Therefore, when the solenoid 41 is operated as shown in FIG. 4A, the mono inlet is opened and the mono ink is sucked by the pump. When the solenoid 41 is operated as shown in FIG. 4B, the color inlet is opened while the color ink is opened. Is sucked by the pump.
    On the other hand, each of the mono ink inlet and the color ink inlet of the switching valve 42 is connected to the mono and color ink cap 52a of the ink suction means 50 through the tube 43, respectively, as shown in FIG.
    The ink suction means 50 has the same structure as before, in which a guide 51, which is an external fixing member, and a slider 52, which is a sliding member inserted into the guide 51, are provided.
    That is, the guide 51 is formed with a guide hole for sliding the slider 52 and at the same time moving up and down, the slider 52 is formed with a guide protrusion inserted into the guide hole on the side, the guide on one side The projection is connected to the guide 51 by a return spring on one side.
    The slider 52 is provided with a mono ink cap 52a and a color ink cap 52a, which are in close contact with the head and draw ink from the head, respectively, and one end of the slider 52 has a stopper 52b integrally. Protruding upward, each ink cap 52a is supported by a spring 52c that is charred to the bottom surface of the slider 52 to minimize contact friction when the head is in close contact with the head.
    In other words, when the slider 52 is raised by the spring 52c and is in close contact with the head, the ink cap 52a and the head are always kept in close contact with constant elasticity.
    Looking at the operation of the present invention according to the configuration as described above when the head carriage is moved to the upper portion of the ink suction means 50 is caught the stopper 52b of the slider 52 on the head carriage.
    If the head carriage continues to move in the state where the stopper 52b is engaged and the slider 52 is moved horizontally at the same time, the slider 52 is gradually raised with horizontal movement while being guided to the guide hole of the guide 51 which is a fixed member. .
    As a result of the rise of the slider 52, the mono and color ink cap 52a of the slider 52 are brought into close contact with the head of the head carriage.
    At this time, if it is determined that the mono ink is not ejected well according to the printing result previously performed, the mono ink cleaning switch is operated.
    When an electrical signal is input by the switch operation, the step motor 11 of the driving means 10 starts to drive, and the solenoid 41 of the switching means 40 opens the suction port of one side.
    The driving force is transmitted to the pumping means 30 by the drive of the step motor 11 and the interlocking of the respective gears 21 to rotate the drum 31, and together with the drum 31 to one side of the drum 31. The pair of rotary rollers 33 provided to correspond to each other is rotated in a state in which the tube 34, one end of which is connected to the switching means 40, is rotated in the suction negative pressure in the tube 34 connected to the switching means 40. This will occur.
    That is, since the rotary roller 33 moves the pressing surface of the tube 34 while interlocking with the drum 31 while holding at least one side of the tube 34 from the beginning, the pumping means 30 and the switching means 40. ), The inside of the tube 34 connected to each other will be formed under a negative pressure.
    Since the suction negative pressure generated in this way is already in communication with the ink suction port of one side in the switching means 40 to suck the ink in the head through the tube 43 connected to the ink cap 52a of the ink suction means 50. will be.
    In this way, the mono head and the color head are selectively cleaned.
    As described above, the present invention allows the pumping means 30 to be driven by a relatively small driving load by a driving force using the step motor 11 rotating in one direction, and is operated simultaneously with the driving of the step motor 11. The solenoid 41 is characterized by selectively opening the inflow path of the ink to be sucked.
    This allows the conventional head cleaning device to simultaneously generate the suction negative pressure of the ink and the selection of the ink suction path by the rotation direction of the motor and the pumping part, thereby forming the pumping part in a very complicated configuration. A function and a selection function of the ink suction path are performed in the pumping means 30 and the switching means 40, respectively, so as to simplify the configuration of the pumping means 30, thereby minimizing the driving load.
    In addition, different functions are performed by separate means, thereby increasing the efficiency of performing each function, and subsequent maintenance or repair becomes very convenient.
    In particular, it is possible to reduce the cost from the manufacturing stage by simplifying the configuration of the most important components generating suction negative pressure.
    As described above, the present invention makes it possible to use a one-way driving motor having a relatively small driving load while simplifying the configuration of the ink suction generating means.
    This, in turn, allows for improved assembly and reduced component and power consumption, resulting in an economic advantage of reducing manufacturing and maintenance costs.
    In particular, since the separation of the main functions can maximize the performance of each function, there is a useful effect to increase the performance and reliability improvement.
    权利要求:
    Claims (7)
    [1" claim-type="Currently amended] Drive means for generating power by an electrical signal;
    Power transmission means for transmitting while decelerating power from the driving means;
    Pumping means for generating suction negative pressure by a driving force transmitted from said power transmission means;
    Switching means for selectively switching a supply path of negative pressure by an electrical signal;
    A cleaning apparatus of an ink jet printer head provided with ink suction means for drilling an ink discharge port of a head blocked by a negative pressure supplied while being in close contact with the head by the transfer of the head carrier.
    [2" claim-type="Currently amended] The method of claim 1, wherein the driving means
    A cleaning device for an inkjet print head, which is a step motor that can only rotate in one direction.
    [3" claim-type="Currently amended] The method of claim 1, wherein the power transmission means
    And a plurality of gears having different gear ratios so as to reduce the driving force from the driving means.
    [4" claim-type="Currently amended] The method of claim 1, wherein the pumping means
    A drum is rotatably provided by a driving force transmitted from the power transmission means in the case, and a tube is wound around the inner circumferential surface of the case to be fixed, and a pair of rotary rollers pressurizing the tube is disposed on one side of the drum. A cleaning apparatus of an inkjet print head to be provided correspondingly.
    [5" claim-type="Currently amended] The method of claim 4, wherein the drum
    And a gear formed on an outer circumferential surface thereof so as to engage with the final gear of the power transmission means.
    [6" claim-type="Currently amended] The method of claim 1, wherein the switching means
    A cleaning device for an inkjet print head in which a solenoid on one side and a switching valve on the other side are connected to each other so that the plunger interlocks the spool in the switching valve and selectively opens the mono and color ink inlets by electrical operation of the solenoid.
    [7" claim-type="Currently amended] The ink suction device of claim 1, wherein the ink suction means
    It has a slider, which is an external fixed member and a slider which is inserted into the guide and is a sliding member which simultaneously moves horizontally and moves up and down along the guide hole formed in the guide. Each ink cap is provided with a mono ink cap and a color ink cap for sucking ink, and a stopper is integrally projected upwardly at one end thereof, and each ink cap is cleaned by a spring that is compressed to the bottom of the slider. Device.
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    同族专利:
    公开号 | 公开日
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1998-12-31|Application filed by 이형도, 삼성전기 주식회사
    1998-12-31|Priority to KR1019980062672A
    1998-12-31|Priority claimed from KR1019980062672A
    2000-07-25|Publication of KR20000046011A
    2001-12-28|Application granted
    2001-12-28|Publication of KR100307780B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019980062672A|KR100307780B1|1998-12-31|Cleaning device for inkjet print head|
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