WO2020063235A1 - 准确定位热印头的结构及打印单元及打印设备 - Google Patents

准确定位热印头的结构及打印单元及打印设备 Download PDF

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Publication number
WO2020063235A1
WO2020063235A1 PCT/CN2019/102691 CN2019102691W WO2020063235A1 WO 2020063235 A1 WO2020063235 A1 WO 2020063235A1 CN 2019102691 W CN2019102691 W CN 2019102691W WO 2020063235 A1 WO2020063235 A1 WO 2020063235A1
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WIPO (PCT)
Prior art keywords
bracket
printing
print head
thermal print
base
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PCT/CN2019/102691
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English (en)
French (fr)
Inventor
林锦毅
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林锦毅
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Publication date
Application filed by 林锦毅 filed Critical 林锦毅
Publication of WO2020063235A1 publication Critical patent/WO2020063235A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
    • B41J2/335—Structure of thermal heads

Definitions

  • the present invention relates to the technical field of printers, and in particular, to a structure, a printing device, and a printing system for accurately positioning a thermal head.
  • the printing module includes a rubber roller and a thermal head film group.
  • the two have different coordination relationships to adapt to different working conditions. It is often necessary to design the thermal head film group to be able to be raised or pressed against the rubber roller. .
  • An elastic member is required to apply a certain elastic force when the thermal printing head sheet presses the rubber roller, so the thermal printing head sheet has a certain space for movement relative to the fixed bracket.
  • the mobility of the thermal print head will cause movement during printing due to the traction force when the paper is output, resulting in a large deviation between the heating position of the thermal print head and the tangent position of the rubber roller, resulting in a series of poor printing and other problems. problem.
  • the invention provides a reference positioning transmission gear and a driving device, and a printing device and a printing system, and aims to improve the problem that the existing printing device has a complicated and poorly coordinated structure for recording medium transportation and printing.
  • the invention is implemented as follows:
  • a structure for accurately positioning a thermal print head includes a thermal print head assembly and a base capable of leaving a mark on a recording medium, and the thermal print head assembly is rotatably provided on the base, and is characterized in that the thermal print head
  • the print head assembly includes a first support that carries a long thermal print head, and a second support that is rotatable about an axis by a driving force. The rotation of the second support drives the first support to rotate synchronously.
  • the first bracket is movable under pressure.
  • the first bracket is provided with a first limiting portion
  • the base is provided with a second limiting portion.
  • the first limiting portion and the second limiting portion are in a printing state.
  • the external fitting restricts the first bracket to be located at the printing reference position.
  • the second bracket includes two connecting arms respectively located on both sides of the first bracket, and the base is provided with a first rotating shaft. One end is sleeved on the first rotating shaft and can rotate around the first rotating shaft.
  • the first bracket includes a heat sink and a mounting bracket
  • the thermal print head is closely attached to and fixed on the heat sink
  • the heat sink is fixed on the mounting bracket.
  • one end of the mounting bracket is sleeved on the first rotating shaft.
  • a projection is formed on at least one side of the heat sink or the mounting bracket to form the first limiting portion, and the projection protrudes from the base to form the first limiting portion.
  • the first limiting portion abuts against the second limiting portion to play a limiting role.
  • the mounting bracket includes a first force receiving portion and a second force receiving portion, and the second bracket rotates clockwise to press against the first force receiving portion, and The second bracket rotates counterclockwise to press against the second force receiving portion.
  • the base includes a second rotating shaft for connecting with the driving device, and the two connecting arms are respectively sleeved at two ends of the second rotating shaft.
  • the mounting bracket extends out of an arm portion, and an elongated hole is provided in the arm portion to be sleeved on the first rotating shaft.
  • it further comprises an elastic member, one end of the elastic member is connected to the base, and the other end thereof is connected to the mounting bracket.
  • a printing unit is also provided, using the above structure, and further comprising a platen roller, the thermal head assembly is pressed against the platen roller in a printing state, and the first limit portion and the second limit portion Bit fit.
  • a printing device is also provided, using the above structure, and further comprising a driving device that transmits a driving force to the second bracket so that the second bracket is forced to rotate about an axis.
  • the beneficial effect of the present invention is that the present invention needs to reserve a moving space for the first bracket provided with the thermal head, and by providing a first limiting portion on the first bracket and a second limiting portion on the base, two In the printing state, the first bracket is restricted from being located at the printing reference position.
  • the thermal head assembly is moved by the traction force of the recording medium, which causes the deviation between the heating position and its tangent on the platen roller to affect the printing effect.
  • FIG. 1 is a schematic structural diagram of a printing system in a first perspective according to an embodiment of the present invention
  • FIG. 2 is a cross-sectional view of the printing system shown in FIG. 1 along the A-A direction;
  • FIG. 3 is a schematic structural diagram of a printing device (when displaying components such as a printing unit, a driving device, and a part of a base) in a second perspective according to an embodiment of the present invention
  • FIG. 4 is an exploded view of the printing apparatus shown in FIG. 3;
  • FIG. 5 is a schematic structural view of the printing device shown in FIG. 3 (when the fan-shaped transmission member and the third rotating shaft are not shown) from a third perspective;
  • FIG. 6 is a schematic structural diagram of the printing device shown in FIG. 3 along the B-B direction and in a printing reference position;
  • FIG. 7 is a schematic structural diagram of the printing device shown in FIG. 3 along the B-B direction and in a separated state;
  • FIG. 8 is a schematic structural diagram of a thermal print head assembly in a fourth perspective according to an embodiment of the present invention.
  • FIG. 9 is an exploded view of the thermal head assembly shown in FIG. 8.
  • Icons 100-printing equipment; 200-supply box; 201-mounting body; 202-first cover; 203-second cover; 204-tray; 1-base; 11-second stop; 12 -First rotating shaft; 13- Second rotating shaft; 14- Third rotating shaft; 2- Driving device; 21- Sector transmission member; 22- Transmission gear; 23- Driving member; 24- First gear; 25- Second gear; 3-printing unit; 31- platen roller; 32- thermal print head assembly; 33- mounting bracket; 34- heat sink; 341-1 fins; 331- first force receiving section; 332- second force receiving section; 333 -Arm portion; 334-long hole; 35-thermal head; 36-elastic member; 37-second bracket; 371-connecting arm; 38-first limit portion; X-recording medium.
  • first and second are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality” is two or more, unless specifically defined otherwise.
  • the terms “installation”, “connected”, “connected”, “fixed” and other terms shall be understood in a broad sense unless otherwise specified and defined, for example, they may be fixed connections or removable connections , Or integrated; it can be mechanical or electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal connection of the two elements or the interaction between the two elements.
  • the specific meanings of the above terms in the present invention can be understood according to specific situations.
  • the printing apparatus 100 includes a base 1, a driving device 2, and a printing unit 3.
  • the base 1 is used to carry the driving device 2 and the printing unit 3.
  • the driving device 2 transmits a driving force to the printing unit 3. To make the printing unit 3 complete the corresponding functional actions.
  • the driving device 2 can also transmit driving force to other structures or devices.
  • the base 1 includes a housing of the printing device 100 and a bracket provided in the housing cavity, and is used for containing, covering, carrying, and fixing other structures or devices of the printing device 100.
  • the above structures or devices may also be fixed, Detachable, movable connection and other methods are set on the bracket.
  • the printing unit 3 can leave a mark on the recording medium X passing therethrough, and the recording medium X refers to a substance that can leave a print mark thereon by printing by the printing device 100, such as A4 paper, photo paper, thermal paper, etc. All belong to the recording medium X.
  • the printing unit 3 includes a thermal head assembly 32 and a platen roller 31.
  • the thermal head assembly 32 is rotatably provided on the base 1.
  • the printing unit 3 includes a printing state and a separation state. In the printing state, the thermal head assembly 32 and the platen roller 31 are positioned at the printing reference position, the recording medium X passes between the thermal head assembly 32 and the platen roller 31, and the head in the thermal head assembly 32 is heated to make the ink The medium reacts on the recording medium X to form a mark.
  • the thermal head unit 32 presses the recording medium X against the platen roller 31.
  • the rotation of the platen roller 31 causes friction between the recording medium X and the recording medium X to be conveyed outward.
  • it is adapted to separate the thermal head assembly 32 from the platen roller 31 to avoid the pressure and heating action of the thermal head assembly 32 on the platen roller 31 from damaging the platen roller 31.
  • the thermal print head assembly 32 includes a first support carrying a long thermal print head 35 and a second support 37 rotatable about an axis under a driving force.
  • the rotation of the second support 37 drives the first support to rotate synchronously.
  • the first bracket can have a certain space for movement relative to the base 1, so the first bracket can move due to the force.
  • the first bracket is provided with a first limiting portion 38, and the base 1 is provided with a second limiting portion 11. In the printing state, the first limiting portion 38 and the second limiting portion 11 cooperate to restrict the first bracket from being located on the printing reference. position.
  • the first bracket needs a certain space on the base 1 and is moved by the traction of the recording medium X during the printing process, it is easy to cause the tangent line of the thermal head assembly 32 and the platen 31 to be compared with the thermal head.
  • the heating position of the module 32 has a large deviation. In most cases, the heating degree is insufficient and the printing is not clear. Therefore, by providing a first limiting portion 38 on the thermal head assembly 32 and cooperating with the second limiting portion 11 on the base 1, the thermal head assembly 32 and the platen roller 31 are restricted to the printing reference position during printing. Therefore, the accuracy of the heating position of the thermal head assembly 32 is improved.
  • the base 1 is provided with a first rotating shaft 12, one end of the second bracket 37 is sleeved on the first rotating shaft 12, and the second bracket 37 is rotated around the first rotating shaft 12 by a driving force.
  • the second bracket 37 includes two connecting arms 371 respectively located on two sides of the first bracket, and one end of the connecting arm 371 is sleeved on the first rotating shaft 12. Two connecting arms 371 are provided on both sides for connection.
  • the second bracket 37 has two force receiving points, which can smoothly rotate around the first rotating shaft 12, especially when the thermal head 35 is in a long shape. If there is only one force point during the rotation, the problem of motion deflection is easy to occur.
  • the first bracket includes a heat sink 34 and a mounting bracket 33.
  • the thermal head 35 is closely attached to and fixed on the heat sink 34, that is, one side of the thermal head 35 faces the platen roller 31, and the opposite side is fixed on the heat sink 34. The excess heat generated by the thermal head 35 can be transferred outward.
  • the heat sink 34 is fixed on the mounting bracket 33.
  • One end of the mounting bracket 33 is sleeved on the first rotating shaft 12.
  • the heat sink 34 and the mounting bracket 33 as a whole can rotate around the first shaft 12.
  • the thermal print head 35 is provided at one end of the heat sink 34, and the other end of the heat sink 34 is divided into a plurality of fins 341. There is a gap between adjacent fins 341, and an angle is formed between adjacent fins 341 Settings to improve heat dissipation.
  • the first limiting portion 38 is formed on the heat sink 34 or the mounting bracket 33, and a protrusion is provided on at least one side of the heat sink 34 or the mounting bracket 33 to form the first limiting portion 38.
  • the first limiting portions 38 are respectively provided on the left and right sides of the heat sink 34.
  • the base 1 protrudes to form a second limiting portion 11.
  • the base 1 corresponds to the first limiting portions 38 on both sides, and second limiting portions 11 are respectively provided to cooperate with the first limiting portions 38.
  • the mounting bracket 33 extends out of the arm portion 333, and an elongated hole 334 is defined in the arm portion 333 to be sleeved on the first rotating shaft 12. In the printing state, the length direction of the long hole 334 is substantially parallel to the output direction of the recording medium X.
  • the recording medium X refers to the horizontal direction from the input port to the output port when the printing apparatus 100 is placed horizontally.
  • the mounting bracket 33 can have a certain moving space with respect to the first rotating shaft 12.
  • the base 1 includes a second rotating shaft 13 for connecting with the driving device 2, and two connecting arms 371 are respectively sleeved on two ends of the second rotating shaft 13.
  • the driving device 2 drives the second rotating shaft 13 to rotate, and the second rotating shaft 13 rotates to drive the connecting arm 371 to rotate.
  • the mounting bracket 33 includes a first force receiving portion 331 and a second force receiving portion 332.
  • the second bracket 37 rotates clockwise to press the first force receiving portion 331, and the second bracket 37 rotates counterclockwise to press the second force receiving portion 332.
  • the mounting bracket 33 has a certain space for movement relative to the base 1.
  • the thermal head assembly 32 further includes an elastic member 36. One end of the elastic member 36 is connected to the base 1, and the other end thereof is connected to the mounting bracket 33.
  • the elastic member 36 can apply an elastic force to the thermal head 35 so that the thermal head 35 can apply a relatively constant pressure to the platen roller 31, which is beneficial to the uniformity of printing.
  • the first rotating shaft 12 is disposed substantially at the same horizontal position as the tangent position of the rubber roller and the thermal head 35 in the printing state, and the thermal head assembly 32 does not interfere with the rubber roller and other components during the rotation process.
  • the connecting arm 371 is a long and bent structure.
  • the driving device 2 includes a driving member 23 and a transmission gear 22.
  • the driving member 23 can transmit a driving force to the transmission gear 22.
  • the driving member 23 refers to a mechanical driving mechanism, such as electric, starting, hydraulic driving, etc.
  • the driving member 23 is a motor.
  • the driving device 2 further includes a plurality of gears located upstream of the transmission gear 22 for transmitting a driving force, for example, including a first gear 24 and a second gear 25.
  • the first gear 24 meshes with the motor to transmit the driving force
  • the second gear 25 meshes with the first gear 24, and the second gear 25 meshes with the transmission gear 22. Understandably, there can be more gears.
  • the transmission gear 22 is provided with a second gear 25, which is used for connecting with the driving member 23 or other transmission members, and can transmit the driving force by rotating around the rotation axis.
  • the transmission gear 22 includes a first gear 24 provided coaxially with the rotation axis as an axis, and is configured to transmit the driving force of the driving member 23 to the thermal head 35.
  • the driving device 2 includes a sector-shaped transmission member 21, the base 1 and the sector-shaped transmission member 21 are fixedly connected or detachably connected, the sector-shaped transmission member 21 is sleeved on the third rotation shaft 14, and the sector-shaped transmission member 21 rotates around the third rotation shaft 14, The sector-shaped transmission member 21 drives the second rotating shaft 13 to rotate synchronously.
  • the fan-shaped transmission member 21 rotates, and the first bracket swings with it, thereby driving the thermal head 35 to rise and fall.
  • the thermal head 35 can form a variety of different states with the platen roller 31.
  • the printing system uses the printing apparatus 100 in Embodiment 1, and further includes a supply cartridge 200.
  • the supply cassette 200 is detachably connected to the printing apparatus 100.
  • the supply cassette 200 includes a tray 204 on which a plurality of recording media X are stacked.
  • the recording medium X is output from the supply cassette 200 and is conveyed to the print-printing unit 3 for printing.
  • the supply box 200 includes a mounting body 201, a tray 204, a first cover 202, and a second cover 203.
  • the mounting body 201 has a cavity for storing the recording medium X.
  • the first cover 202 and the second cover 203 Each of the trays 204 is openable and closable, and the tray 204 is provided on the bottom of the tray 201.
  • the mounting body 201 refers to a structure that can carry and store the recording medium X, for example, a housing structure including a bottom surface opening.

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Abstract

准确定位热印头的结构，包括能够在记录介质上留下痕迹的热印头组件（32）和基座（1），热印头组件（32）包括承载长条状的热印头（35）的第一支架，以及受驱动力作用可绕一轴线转动的第二支架（37），第二支架（37）转动过程带动第一支架同步转动，第一支架受力可移动，第一支架上设有第一限位部（38），基座（1）上设有第二限位部（11），打印状态时第一限位部（38）与第二限位部（11）配合限制第一支架位于打印基准位置。通过在第一支架上设置第一限位部（38）、在基座（1）上设置第二限位部（11），二者在打印状态时限制第一支架位于打印基准位置，避免打印状态时，热印头组件（32）受记录介质牵引力作用移动导致加热位置与其在压纸辊（31）上的切线偏差过大影响打印效果。

Description

准确定位热印头的结构及打印单元及打印设备 技术领域
本发明涉及打印机的技术领域，具体而言，涉及准确定位热印头的结构及打印设备及打印系统。
背景技术
大部分打印机配备于办公室或者家庭而被使用，打印机的种类丰富，按所采用的技术分类包括喷墨式、热敏式、热转印、静电式等打印机。通常，打印模块包含胶辊和热印头片组，二者适应不同的工作状态有着多种配合关系，往往需要将热印头片组设计成能够相对胶辊抬高或压紧在胶辊上。热印头片压紧胶辊时需要有弹性件施加一定的弹性力，因此热印头片相对固定支架具有一定的活动空间。然而热印头片的可活动性，在打印时会因为受到纸张输出时的牵引力而产生运动，导致热印头的加热位置与胶辊的切线位置存在较大偏差，进而产生打印不良等一系列问题。
技术问题
本发明提供了基准定位的传动齿轮及驱动装置及打印设备及打印系统，旨在改善现有打印设备在记录介质输送与打印协调结构复杂且协调性不好的问题。
技术解决方案
本发明是这样实现的：
准确定位热印头的结构，包括能够在记录介质上留下痕迹的热印头组件和基座，所述热印头组件可转动地设在所述基座上，其特征在于，所述热印头组件包括承载长条状的热印头的第一支架，以及受驱动力作用可绕一轴线转动的第二支架，所述第二支架转动过程带动所述第一支架同步转动，所述第一支架受力可移动，所述第一支架上设有第一限位部，所述基座上设有第二限位部，打印状态时所述第一限位部与第二限位部配合限制所述第一支架位于打印基准位置。
进一步地，在本发明较佳的实施例中，所述第二支架包括两个分别位于所述第一支架两侧的连接臂，所述基座上设有第一转轴，所述连接臂的一端套设在所述第一转轴上，且能够绕所述第一转轴转动。
进一步地，在本发明较佳的实施例中，所述第一支架包括散热片和安装支架，所述热印头紧贴且固定在所述散热片上，所述散热片固定在所述安装支架上，所述安装支架的一端套设在所述第一转轴上。
进一步地，在本发明较佳的实施例中，所述散热片或所述安装支架至少一侧设有凸块形成所述第一限位部，所述基座上凸伸出凸块形成所述第二限位部，所述第一限位部抵靠在所述第二限位部起到限制作用。
进一步地，在本发明较佳的实施例中，所述安装支架包括第一受力部和第二受力部，所述第二支架顺时针转动抵压所述第一受力部，所述第二支架逆时针转动抵压所述第二受力部。
进一步地，在本发明较佳的实施例中，所述基座包括用以与驱动装置连接的第二转轴，两个所述连接臂分别套设在所述第二转轴的两端。
进一步地，在本发明较佳的实施例中，所述安装支架延伸出臂部，所述臂部上开设有用以套设在第一转轴上的长型孔。
进一步地，在本发明较佳的实施例中，进一步包括弹性件，所述弹性件的一端连接于基 座，其另一端连接于所述安装支架。
还提供了打印单元，使用上述的结构，还包括压纸辊，打印状态时所述热印头组件抵压在所述压纸辊上，且所述第一限位部与所述第二限位部配合。
还提供了打印设备，使用上述的结构，还包括驱动装置，所述驱动装置向所述第二支架传递驱动力，以使所述第二支架受力绕一轴线转动。
有益效果
本发明的有益效果是：本发明需给予设有热印头的第一支架预留移动空间，通过在第一支架上设置第一限位部、在基座上设置第二限位部，二者在打印状态时限制第一支架位于打印基准位置。避免打印状态时，热印头组件受记录介质牵引力作用移动导致加热位置与其在压纸辊上的切线偏差过大影响打印效果。
附图说明
为了更清楚地说明本发明实施方式的技术方案，下面将对实施方式中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本发明的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1是本发明实施例，打印系统在第一视角下的结构示意图；
图2是图1所示打印系统沿A-A方向的剖视图；
图3是本发明实施例，打印设备(显示打印单元、驱动装置以及部分基座等部件时)在第二视角下的结构示意图；
图4是图3所示打印设备的分解示意图；
图5是图3所示打印设备(未显示扇形传动件、第三转轴时)在第三视角下的结构示意图；
图6是图3所示打印设备沿B-B方向，且处于打印基准位置的结构示意图；
图7是图3所示打印设备沿B-B方向，且处于分离状态的结构示意图；
图8是本发明实施例，热印头组件在第四视角下的结构示意图；
图9是图8所示热印头组件的分解示意图。
图标：100-打印设备；200-供给盒；201-载置体；202-第一盖体；203-第二盖体；204-托盘；1-基座；11-第二限位部；12-第一转轴；13-第二转轴；14-第三转轴；2-驱动装置；21-扇形传动件；22-传动齿轮；23-驱动件；24-第一齿轮；25-第二齿轮；3-打印单元；31-压纸辊；32-热印头组件；33-安装支架；34-散热片；341-鳍片；331-第一受力部；332-第二受力部；333-臂部；334-长型孔；35-热印头；36-弹性件；37-第二支架；371-连接臂；38-第一限位部；X-记录介质。
本发明的实施方式
为使本发明实施方式的目的、技术方案和优点更加清楚，下面将结合本发明实施方式中的附图，对本发明实施方式中的技术方案进行清楚、完整地描述，显然，所描述的实施方式是本发明一部分实施方式，而不是全部的实施方式。基于本发明中的实施方式，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施方式，都属于本发明保护的范围。因此，以下对在附图中提供的本发明的实施方式的详细描述并非旨在限制要求保护的本发明的范围，而是仅仅表示本发明的选定实施方式。基于本发明中的实施方式，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施方式，都属于本发明保护的范围。
术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
实施例1
参照图1至图9所示，打印设备100包括基座1、驱动装置2和打印单元3，基座1用于承载驱动装置2和打印单元3等，驱动装置2向打印单元3传递驱动力，以使打印单元3完成相应的功能动作。当然驱动装置2还能够向其它结构或装置传递驱动力。基座1包括打印设备100的外壳以及设于外壳容腔内的支架等，用于包容、包覆、承载、固定打印设备100的其它结构或装置等，当然上述结构或装置也可以以固定、可拆、活动连接等方式设在支架上。打印单元3能够在从其中经过的记录介质X上留下印记，记录介质X指指通过打印设备100的印刷能够在其上留下打印痕迹的物质，例如A4纸、照片纸、热敏纸等均属于记录介质X。
打印单元3包括热印头组件32和压纸辊31，热印头组件32可转动地设在基座1上，打印单元3包含打印状态和分离状态。打印状态时，热印头组件32与压纸辊31位于打印基准位置上，记录介质X从热印头组件32与压纸辊31之间经过，热印头组件32中的头片加热使得油墨等介质在记录介质X上发生反应形成印记。此时热印头组件32将记录介质X抵压在压纸辊31上。压纸辊31的转动会与记录介质X之间产生摩擦力而带动记录介质X向外输送。在不需要打印时，适应将热印头组件32与压纸辊31分离设置，避免热印头组件32对压纸辊31的抵压、加热作用损坏压纸辊31。
热印头组件32包括承载长条状的热印头35的第一支架，以及受驱动力作用可绕一轴线转动的第二支架37，第二支架37转动过程带动第一支架同步转动。第一支架能够相对基座1具有一定的活动空间，因此第一支架受力会有所活动。第一支架上设有第一限位部38，基座1上设有第二限位部11，打印状态时第一限位部38与第二限位部11配合限制第一支架位于打印基准位置。由于第一支架在基座1上需要且有一定的活动空间，打印过程受到记录介质X的牵引力作用产生活动，容易导致热印头组件32与压纸辊31的切线，相比较于热印头组件32的加热位置偏差较大，多数情况会导致加热程度不够而存在打印不清晰。因此通过在热印头组件32上设置第一限位部38，与基座1上的第二限位部11配合，将热印头组件32与压纸辊31在打印时限制与打印基准位置上，提高热印头组件32加热位置的准确性。
实施例中，基座1上设有第一转轴12，第二支架37的一端套设在第一转轴12上，受驱动力作用第二支架37绕第一转轴12转动。优选的，第二支架37包括两个分别位于第一支架两侧的连接臂371，连接臂371的一端套设在第一转轴12上。在两侧分别设置用于连接的连接臂371，转动运动过程，第二支架37具有两个受力点，能够平稳的绕第一转轴12转动，尤其在热印头35呈长条状时，如果转动过程仅有一个受力点则容易出现运动偏斜问题。
第一支架包括散热片34和安装支架33，热印头35紧贴且固定在散热片34上，即热印头35的一面面向压纸辊31，相对的另一面固定在散热片34上，能够对热印头35产生的多余热量向外传递。散热片34固定在安装支架33上，安装支架33的一端套设在第一转轴12上，散热片34与安装支架33作为一个整体能够绕第一转轴12转动。优选的，热印头35 设在散热片34的一端，散热片34的另端开分形成多个鳍片341，相邻鳍片341之间具有间隙，且相邻鳍片341之间呈角度设置，提升散热效果。
第一限位部38形成于散热片34或安装支架33上，且在散热片34或安装支架33至少一侧设有凸块以形成第一限位部38。优选的，在散热片34的左右两侧分别设有第一限位部38。基座1凸伸出凸块形成第二限位部11。优选的基座1对应两侧的第一限位部38，分别设有与之配合的第二限位部11。
安装支架33延伸出臂部333，臂部333上开设有用以套设在第一转轴12上的长型孔334。打印状态，长型孔334的长度方向基本与记录介质X输出方向平行，记录介质X指在打印设备100水平放置时，从输入口指向输出口方向的水平方向。安装支架33能够相对第一转轴12具有一定的移动空间。
基座1包括用以与驱动装置2连接的第二转轴13，两个连接臂371分别套设在第二转轴13的两端。驱动装置2带动第二转轴13转动，第二转轴13转动带动连接臂371转动。
安装支架33包括第一受力部331和第二受力部332，第二支架37顺时针转动抵压第一受力部331，第二支架37逆时针转动抵压第二受力部332。以使安装支架33相对基座1保持具有一定活动空间。热印头组件32进一步包括弹性件36，弹性件36的一端连接于基座1，其另一端连接于安装支架33。弹性件36能够对热印头35施加弹性力，以使热印头35能够对压纸辊31施加相对恒定的压力，有益于打印的均匀性。
优选的，第一转轴12大致设在打印状态时胶辊与热印头35相切位置的同一水平位置上，热印头组件32转动过程不会与胶辊等部件干涉。连接臂371为长条状且弯折的结构。
驱动装置2包括驱动件23和传动齿轮22，驱动件23能够向传动齿轮22传递驱动力。驱动件23指机械的驱动机构，电气、启动、液压驱动等，在实施例中驱动件23采用马达。实施例中，驱动装置2还包括位于传动齿轮22上游的若干齿轮，用于传动驱动力，例如包括第一齿轮24、第二齿轮25，第一齿轮24与马达啮合传动驱动力，第二齿轮25与第一齿轮24啮合，第二齿轮25与传动齿轮22啮合。可以理解，还能够有更多级的齿轮。
传动齿轮22上设有第二齿轮25部，用于与驱动件23或其它传动件连接，能够绕旋转轴转动传递驱动力。传动齿轮22包括以旋转轴为轴线同轴设置的第一齿轮24部，用以将驱动件23的驱动力传递至热印头35上。
驱动装置2包含扇形传动件21，基座1与扇形传动件21固定连接或可拆装连接，扇形传动件21绕套设在第三转轴14上，扇形传动件21绕第三转轴14转动，扇形传动件21带动第二转轴13同步转动。扇形传动件21转动，第一支架随之摆动，进而带动热印头35的升降，热印头35能够与压纸辊31形成多种不同的状态。
实施例2
打印系统，使用实施例1中的打印设备100，还包括供给盒200。供给盒200与打印设备100可拆卸连接，供给盒200包括堆叠有若干记录介质X的托盘204。记录介质X从供给盒200输出，输送至打印打印单元3进行打印工作。
供给盒200包括载置体201、托盘204、第一盖体202和第二盖体203，载置体201具有用于放置记录介质X的容腔，第一盖体202与第二盖体203分别可开闭的配置在载置体201上，托盘204设在载置体201的底部。载置体201指可以承载、放置收容记录介质X的结构，例如包括底面开口的壳体结构。
以上仅为本发明的优选实施方式而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 准确定位热印头的结构，包括能够在记录介质上留下痕迹的热印头组件和基座，所述热印头组件可转动地设在所述基座上，其特征在于，所述热印头组件包括承载长条状的热印头的第一支架，以及受驱动力作用可绕一轴线转动的第二支架，所述第二支架转动过程带动所述第一支架同步转动，所述第一支架受力可移动，所述第一支架上设有第一限位部，所述基座上设有第二限位部，打印状态时所述第一限位部与第二限位部配合限制所述第一支架位于打印基准位置。
  2. 根据权利要求1所述的准确定位热印头的结构，其特征在于，所述第二支架包括两个分别位于所述第一支架两侧的连接臂，所述基座上设有第一转轴，所述连接臂的一端套设在所述第一转轴上，且能够绕所述第一转轴转动。
  3. 根据权利要求2所述的准确定位热印头的结构，其特征在于，所述第一支架包括散热片和安装支架，所述热印头紧贴且固定在所述散热片上，所述散热片固定在所述安装支架上，所述安装支架的一端套设在所述第一转轴上。
  4. 根据权利要求3所述的准确定位热印头的结构，其特征在于，所述散热片或所述安装支架至少一侧设有凸块形成所述第一限位部，所述基座上凸伸出凸块形成所述第二限位部，所述第一限位部抵靠在所述第二限位部起到限制作用。
  5. 根据权利要求4所述的准确定位热印头的结构，其特征在于，所述安装支架包括第一受力部和第二受力部，所述第二支架顺时针转动抵压所述第一受力部，所述第二支架逆时针转动抵压所述第二受力部。
  6. 根据权利要求5所述的准确定位热印头的结构，其特征在于，所述基座包括用以与驱动装置连接的第二转轴，两个所述连接臂分别套设在所述第二转轴的两端。
  7. 根据权利要求6所述的准确定位热印头的结构，其特征在于，所述安装支架延伸出臂部，所述臂部上开设有用以套设在第一转轴上的长型孔。
  8. 根据权利要求7所述的准确定位热印头的结构，其特征在于，进一步包括弹性件，所述弹性件的一端连接于基座，其另一端连接于所述安装支架。
  9. 打印单元，其特征在于，使用权利要求1至8任意一项所述的结构，还包括压纸辊，打印状态时所述热印头组件抵压在所述压纸辊上，且所述第一限位部与所述第二限位部配合。
  10. 打印设备，其特征在于，使用权利要求1至8任意一项所述的结构，还包括驱动装置，所述驱动装置向所述第二支架传递驱动力，以使所述第二支架受力绕一轴线转动。
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CN209320493U (zh) * 2018-09-27 2019-08-30 厦门汉印电子技术有限公司 准确定位热印头的结构及打印单元及打印设备

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