WO2015117438A1 - 食品激光打标机 - Google Patents

食品激光打标机 Download PDF

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Publication number
WO2015117438A1
WO2015117438A1 PCT/CN2014/090640 CN2014090640W WO2015117438A1 WO 2015117438 A1 WO2015117438 A1 WO 2015117438A1 CN 2014090640 W CN2014090640 W CN 2014090640W WO 2015117438 A1 WO2015117438 A1 WO 2015117438A1
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Prior art keywords
food
sensor
marking machine
laser marking
laser
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PCT/CN2014/090640
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English (en)
French (fr)
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季国平
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季国平
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Priority to CN201480050932.5A priority Critical patent/CN105579237B/zh
Publication of WO2015117438A1 publication Critical patent/WO2015117438A1/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
    • B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
    • B41J2/44—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using single radiation source per colour, e.g. lighting beams or shutter arrangements
    • B41J2/442—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using single radiation source per colour, e.g. lighting beams or shutter arrangements using lasers

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  • the invention relates to a food laser marking machine.
  • the object of the present invention is to overcome the deficiencies of the prior art and provide a food laser marking machine for food label printing to improve the anti-counterfeiting effect of the food label.
  • the food laser marking machine comprises a laser marking machine, a magnetic fluid lifting device, a conveyor and a controller;
  • the laser marking machine comprises a main control machine, a laser power supply, a cooling system, an optical system And a control system;
  • the magnetic fluid lifting device comprises a container, a floating body, a guiding rod, a magnetic fluid and an electromagnetic coil, the base of the laser marking machine and the outer casing of the container are connected with the frame of the conveyor, and the floating body and the magnetic fluid are located in the container.
  • the electromagnetic coil is arranged on the container, the guide hole is arranged in the middle of the container, the guide rod is located in the guide hole, and a sealing member is arranged between the guide rod and the guide hole, the upper end of the guide rod is connected with the floating body, and the lower end of the guide rod is laser-marked
  • the optical system connection of the machine is used to control the lifting and lowering of the optical system, and to control the distance between the laser head and the food of the optical system to reduce the influence of vibration on the optical system;
  • the conveyor includes a driving wheel, a motor, a passive wheel and a conveyor belt, and a motor Connected to the driving wheel, the conveyor belt is connected with the driving wheel and the passive wheel;
  • the controller includes a distance measuring sensor, a limit sensor and a positioning sensor, and the measuring The sensor and the positioning sensor are located above the conveyor belt, the distance measuring sensor and the positioning sensor are mounted on the base of the laser marking machine on the side of the passive wheel; the limiting sensor is located above the conveyor belt, and the limiting
  • the controller When the food laser marking machine is working, the controller is used to control the operation of the conveyor, and the food is placed on the conveyor belt so that the direction of the printing surface is upward; when the food runs to the detection position below the positioning sensor, the positioning sensor will The signal is transmitted to the controller, and the controller controls the distance measuring sensor to detect the position signal of the food printing surface below the measuring sensor, and the distance measuring sensor transmits the position signal of the food printing surface detected on the food printing surface to the controller; when the food is conveyed When sent to the limit position of the limit sensor, the limit sensor transmits the actual position signal of the food to the controller, and the controller controls the conveyor to stop running; meanwhile, the controller controls the voltage of the input electromagnetic coil, and uses the control electromagnetic coil.
  • the voltage is used to control the magnetic field strength of the electromagnetic coil, the magnetic field of the container is magnetized by the magnetic field, the density of the magnetic fluid is changed, the buoyancy of the floating body is changed by the magnetic fluid, and the magnetic field strength of the electromagnetic coil is controlled to control the floating body to the magnetic body.
  • the buoyancy of the fluid using the buoyancy of the floating body on the magnetic fluid to control the optical system.
  • the distance to the food so that the laser head of the optical system is controlled at the desired printing position to suit different printing heights of different foods; after the food is printed with the laser label, the controller controls the conveyor to operate and will laser mark the laser
  • the food is sent to the next process, and the cycle is repeated, and the laser label is continuously printed on each food product using a laser head.
  • the invention has the beneficial effects that the food laser marking machine detects the printing position of the food by using the distance measuring sensor and the positioning sensor, limits the printing position of the food by using the limiting sensor, and prints the laser label on the printed position of the food by using the printing laser head.
  • the anti-counterfeiting effect of the food label is improved; since the laser label does not contain ink or ink, it is beneficial to improve the hygiene and safety of the food; meanwhile, the optical system of the laser marking machine is suspended on the magnetic fluid, thereby reducing the influence of vibration on the optical system.
  • Figure 1 is a schematic view showing the structure of a food laser marking machine.
  • FIG. 1 is a schematic view showing the structure of the food laser marking machine.
  • the food laser marking machine comprises a laser marking machine 1, a magnetic fluid lifting device 2, a conveyor 3 and a controller 4; the laser marking machine 1 includes a main control The machine 5, the laser power source 6, the cooling system 7, the optical system 8 and the control system 9; the magnetic fluid lifting device 2 comprises a container 10, a floating body 11, a guide rod 12, a magnetic fluid 13 and an electromagnetic coil 14, the laser marking machine 1
  • the housing 25 and the outer casing of the container 10 are connected to the frame of the conveyor 3, the floating body 11 and the magnetic fluid 13 are located in the container 10, the electromagnetic coil 14 is disposed on the container 10, and the guide hole 15 is provided in the middle of the container 10, and the guide rod 12 is provided.
  • a sealing member (27) is disposed between the upper end of the guiding rod 12 and the floating body 11, and the lower end of the guiding rod 12 is connected to the optical system 8 of the laser marking machine 1 for controlling the lifting and lowering of the optical system 8, and controlling the optical system 8.
  • the controller 4 includes a ranging sensor 22, a limit sensor 23 and a positioning sensor 24, the ranging sensor 22 and the positioning sensor 24 are located above the conveyor belt 21, and the ranging sensor 22 and the positioning sensor 24 are mounted on the side of the driven wheel 20
  • the position of the laser marking machine 1 is 25; the limit sensor 23 is located above the conveyor belt 21, and the limit sensor 23 is mounted on the base 25 of the laser marking machine 1 beside the laser head 16, and the distance measuring sensor 22 is positioned.
  • the distance of the sensor 24 is equal to the distance from the laser head 16 to the limit sensor 23; the controller 4 is connected to the control system 9, the electromagnetic coil 14, the motor 19, the distance measuring sensor 22, the limit sensor 23, and the positioning sensor 24 via a control line.
  • the working principle of the food laser marking machine is: when working, the controller 4 is used to control the operation of the conveyor 3, and the food 17 is placed on the conveyor belt 21 so that the direction of the printing surface is upward; when the food 17 runs to the positioning
  • the positioning sensor 24 transmits its signal to the controller 4, and the controller 4 controls the ranging sensor 22 to detect the position signal of the printing surface of the food 17 below it, and the distance measuring sensor 22 detects the printed surface of the food 17
  • the position signal of the printed surface of the food 17 is transmitted to the controller 4; when the food 17 is sent to the limit position of the limit sensor 23 by the conveyor belt 21, the limit sensor 23 transmits the actual position signal of the food 17 to the controller 4.
  • the controller 4 controls the conveyor 3 to stop running; at the same time, the voltage of the input electromagnetic coil 14 is controlled by the controller 4, the magnetic field strength of the electromagnetic coil 14 is controlled by the voltage of the control electromagnetic coil 14, and the magnetic fluid 13 of the container 10 is utilized by the magnetic field. It is magnetized to change the density of the magnetic fluid 13, to change the buoyancy of the floating body 11 to the magnetic fluid 13, and to control the floating body 11 to be magnetic by controlling the magnetic field strength of the electromagnetic coil 14.
  • the buoyancy of the body 13 utilizes the buoyancy of the floating body 11 on the magnetic fluid 13 to control the distance of the optical system 8 to the food item 17 so that the laser head 16 of the optical system 8 is controlled at a desired printing position to suit different food items.
  • the controller 4 controls the conveyor 3 to operate, and the food 17 that has been laser-labeled 26 is sent to the next process, so that the laser is continuously circulated, and the laser label 26 is continuously used by the laser head 16.
  • control optical system 8 prints the distance of the laser head 16 to each piece of food 17, and the magnetic fluid 13 is sealed.
  • the floating body 11 is suspended in the magnetic fluid 13.
  • the outer diameter of the guide rod 12 is smaller than the inner diameter of the guide hole 15, and the guide rod 12 is movably coupled with the guide hole 15.
  • each food printing laser label 26 the driving wheel 18 and the driven wheel 20 are rotated in a clockwise direction, and the conveying belt 21 transports the food 17 in the direction in which it is directed by the distance measuring sensor 22 to the limit sensor 23;
  • the upper conveying surface 27 of the belt 21 is parallel to the horizontal line so as not to change the height position of the food item 17.
  • the position sensor 23 is located on the right side of the laser head 16
  • the positioning sensor 24 is located on the right side of the distance measuring sensor 22, and the center line of the distance measuring sensor 22 is positioned.
  • the distance of the center line of the sensor 24 is equal to the distance from the center line of the laser head 16 to the center line of the limit sensor 23.
  • the distance between the controlled laser head 16 to the printed food item 17 and the distance from the distance measuring sensor 22 to the food item 17 detected by the distance measuring sensor 22 equal.
  • the same laser label 26 is printed on the uneven food item 17, and the distance measuring sensor 22 transmits a position height signal of the position of the printing laser label 26 to the controller 4, and the controller 4 controls the electric power according to the signal.
  • the distance from the laser head 16 to the printed food item 17 is printed; the print laser head 16 changes in accordance with the positional height signal change of the position of the print laser label 26 of the food 17 detected by the distance measuring sensor 22.
  • the distance from the laser head 16 to the printed food item 17 is proportional to the voltage of the controller 4 input electromagnetic coil 14; the distance from the laser head 16 to the printed food item 17 and the electromagnetic coil 14 The magnetic field strength is proportional; the distance from the laser head 16 to the printed food 17 is proportional to the buoyancy of the floating body 11 to the magnetic fluid 13 to effect control of the voltage of the electromagnetic coil 14 to control the lifting and lowering of the laser head 16.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Laser Beam Processing (AREA)

Abstract

食品激光打标机包括激光打标机（1）、磁流体升降装置（2）、输送机（3）以及控制器（4）；激光打标机（1）包括主控机（5）、激光电源（6）、冷却系统（7）、光学系统（8）以及控制系统（9）；磁流体升降装置（2）包括容器（10）、浮体（11）、导杆（12）、磁流体（13）以及电磁线圈（14），浮体（11）以及磁流体（13）位于容器（10）内，电磁线圈（14）设于容器（10）上，浮体（11）以及导杆（12）与激光打标机（1）的光学系统（8）连接，用于控制光学系统的升降；控制器（4）包括测距传感器（22）、限位传感器（23）以及定位传感器（24）；利用测距传感器（22）以及定位传感器（24）检测食品的位置，利用限位传感器（23）限定食品的打印位置，利用打印激光头（16）于食品的被打印位置打印激光标签，提高了食品标签的防伪效果。

Description

食品激光打标机 技术领域
本发明涉及一种食品激光打标机。
背景技术
目前，不少食品需要有标签，作为品牌或者防伪标识；由于将印油直接印在食品上，或者将油墨直接打印在食品上会影响食品的卫生以及安全；如果利用激光将品牌或者防伪标识直接打印于食品上，可以提高防伪效果，一种食品激光打标机已成为食品生产商打印食品标签的需要。
发明内容
本发明的目的是克服现有技术的不足，提供一种食品激光打标机，用于食品标签打印，提高食品标签的防伪效果。
本发明所采用的技术方案是：食品激光打标机包括有激光打标机、磁流体升降装置、输送机以及控制器；激光打标机包括有主控机、激光电源、冷却系统、光学系统以及控制系统；磁流体升降装置包括有容器、浮体、导杆、磁流体以及电磁线圈，激光打标机的机座以及容器的外壳与输送机的机架连接，浮体以及磁流体位于容器内，电磁线圈设于容器上，容器的中部设有导孔，导杆位于导孔内，导杆与导孔之间设有密封件，导杆的上端与浮体连接，导杆的下端与激光打标机的光学系统连接，用于控制光学系统的升降，以及控制光学系统的激光头到食品的距离，减少震动对光学系统的影响；输送机包括有主动轮、电机、被动轮以及输送带，电机与主动轮连接，输送带与主动轮以及被动轮连接；控制器包括有测距传感器、限位传感器以及定位传感器，测距传感器以及定位传感器位于输送带的上方，测距传感器以及定位传感器安装于被动轮一侧激光打标机的机座上；限位传感器位于输送带的上方，限位传感器安装于激光头旁边的激光打标机的机座上，测距传感器到定位传感器的距离与激光头到限位传感器的距离相等；控制器通过控制线与控制系统、电磁线圈、电机、测距传感器、限位传感器以及定位传感器连接。
食品激光打标机工作时，利用控制器控制输送机运行，将食品放在输送带上，并使其被打印面的方向朝上；当食品运行到定位传感器下方的检测位置时，定位传感器将其信号传输给控制器，控制器控制测距传感器检测其下方食品打印面的位置信号，测距传感器将于食品打印面检测到的食品打印面的位置信号传输给控制器；当食品被输送带送到限位传感器的限位位置时，限位传感器将食品的实际位置信号传输给控制器，控制器控制输送机停止运行；同时，利用控制器控制输入电磁线圈的电压，利用控制电磁线圈的电压来控制电磁线圈的磁场强度，利用磁场使容器的磁流体被磁化，使磁流体的密度发生变化，使浮体于磁流体受到的浮力发生变化，利用控制电磁线圈的磁场强度来控制浮体于磁流体受到的浮力，利用浮体于磁流体受到的浮力来控制光学系统到食品的距离，以使光学系统的激光头被控制在需要的打印位置，以适合不同的食品不同的打印高度；食品被打印激光标签后，控制器控制输送机运行，将打好激光标签的食品送到下工序，如此不断循环，利用激光头将激光标签不断地打印在每件食品上。
本发明的有益效果是：食品激光打标机，利用测距传感器以及定位传感器检测食品的打印位置，利用限位传感器限定食品的打印位置，利用打印激光头于食品的被打印位置打印激光标签，提高了食品标签的防伪效果；由于激光标签不含印油或者油墨，有利于提高食品的卫生以及安全；同时，激光打标机的光学系统悬浮于磁流体上，减少了震动对光学系统的影响。
附图说明
图1是食品激光打标机的结构示意图。
具体实施方式
下面结合附图对本发明进行进一步的说明：
图1所示的食品激光打标机的结构示意图，食品激光打标机包括有激光打标机1、磁流体升降装置2、输送机3以及控制器4；激光打标机1包括有主控机5、激光电源6、冷却系统7、光学系统8以及控制系统9；磁流体升降装置2包括有容器10、浮体11、导杆12、磁流体13以及电磁线圈14，激光打标机1的机座25以及容器10的外壳与输送机3的机架连接，浮体11以及磁流体13位于容器10内，电磁线圈14设于容器10上，容器10的中部设有导孔15，导杆12位于导孔15内，导杆12与导孔15之 间设有密封件(27)，导杆12的上端与浮体11连接，导杆12的下端与激光打标机1的光学系统8连接，用于控制光学系统8的升降，以及控制光学系统8的激光头16到食品17的距离；输送机3包括有主动轮18、电机19、被动轮20以及输送带21，电机19与主动轮18连接，输送带21与主动轮18以及被动轮20连接；控制器4包括有测距传感器22、限位传感器23以及定位传感器24，测距传感器22以及定位传感器24位于输送带21的上方，测距传感器22以及定位传感器24安装于被动轮20一侧激光打标机1的机座25上；限位传感器23位于输送带21的上方，限位传感器23安装于激光头16旁边的激光打标机1的机座25上，测距传感器22到定位传感器24的距离与激光头16到限位传感器23的距离相等；控制器4通过控制线与控制系统9、电磁线圈14、电机19、测距传感器22、限位传感器23以及定位传感器24连接。
食品激光打标机的工作原理是：工作时，利用控制器4控制输送机3运行，将食品17放在输送带21上，并使其被打印面的方向朝上；当食品17运行到定位传感器24下方的检测位置时，定位传感器24将其信号传输给控制器4，控制器4控制测距传感器22检测其下方食品17打印面的位置信号，测距传感器22将于食品17打印面检测到的食品17打印面的位置信号传输给控制器4；当食品17被输送带21送到限位传感器23的限位位置时，限位传感器23将食品17的实际位置信号传输给控制器4，控制器4控制输送机3停止运行；同时，利用控制器4控制输入电磁线圈14的电压，利用控制电磁线圈14的电压来控制电磁线圈14的磁场强度，利用磁场使容器10的磁流体13被磁化，使磁流体13的密度发生变化，使浮体11于磁流体13受到的浮力发生变化，利用控制电磁线圈14的磁场强度来控制浮体11于磁流体13受到的浮力，利用浮体11于磁流体13受到的浮力来控制光学系统8到食品17的距离，以使光学系统8的激光头16被控制在需要的打印位置，以适合不同的食品17不同的打印高度；食品17被打印激光标签26后，控制器4控制输送机3运行，将打好激光标签26的食品17送到下工序，如此不断循环，利用激光头16将激光标签26不断地打印在每件食品17上；激光标签26包括有条形码以及二维码。
为了减少震动对光学系统8的影响以及控制光学系统8的升降，控制光学系统8打印激光头16到每一件食品17的距离，磁流体13被密封于 容器10内，浮体11悬浮于磁流体13内，导杆12的外径小于导孔15的内径，导杆12与导孔15动配合连接。
为了实施每一件食品打印激光标签26的流水作业，主动轮18以及被动轮20按顺时针方向转动，输送带21输送食品17运行的方向是：由测距传感器22指向限位传感器23；输送带21的上输送面27与水平线平行，以免食品17的高度位置发生变化。
为了实施检测食品17的打印位置以及按检测位置于食品17打印激光标签26，限位传感器23位于激光头16的右边，定位传感器24位于测距传感器22的右边，测距传感器22中心线到定位传感器24中心线的距离与激光头16中心线到限位传感器23中心线的距离相等。
为了实施检测食品17的打印位置以及按检测位置于食品17打印激光标签26，控制的激光头16到被打印的食品17的距离与测距传感器22检测到的测距传感器22到食品17的距离相等。
为了控制激光打印的深度，于不平的食品17上打印出深浅相同的激光标签26，测距传感器22将打印激光标签26位置的位置高度信号传输给控制器4，控制器4根据该信号控制电打印激光头16到被打印食品17的距离；打印激光头16跟随测距传感器22检测食品17的打印激光标签26位置的位置高度信号变化而变化。
为了实施利用控制器4对激光头16的控制，激光头16到被打印食品17的距离与控制器4输入电磁线圈14的电压成正比；激光头16到被打印食品17的距离与电磁线圈14的磁场强度成正比；激光头16到被打印食品17的距离与浮体11于磁流体13受到的浮力成正比，以实施控制电磁线圈14的电压达到控制激光头16升降的目的。

Claims (7)

  1. 食品激光打标机，其特征在于：所述的食品激光打标机包括有激光打标机(1)、磁流体升降装置(2)、输送机(3)以及控制器(4)；激光打标机(1)包括有主控机(5)、激光电源(6)、冷却系统(7)、光学系统(8)以及控制系统(9)；磁流体升降装置(2)包括有容器(10)、浮体(11)、导杆(12)、磁流体(13)以及电磁线圈(14)，激光打标机(1)的机座(25)以及容器(10)的外壳与输送机(3)的机架连接，浮体(11)以及磁流体(13)位于容器(10)内，电磁线圈(14)设于容器(10)上，容器(10)的中部设有导孔(15)，导杆(12)位于导孔(15)内，导杆(12)的上端与浮体(11)连接，导杆(12)的下端与激光打标机(1)的光学系统(8)连接，用于控制光学系统(8)的升降，以及控制光学系统(8)的激光头(16)到食品(17)的距离；输送机(3)包括有主动轮(18)、电机(19)、被动轮(20)以及输送带(21)，电机(19)与主动轮(18)连接，输送带(21)与主动轮(18)以及被动轮(20)连接；控制器(4)包括有测距传感器(22)、限位传感器(23)以及定位传感器(24)，测距传感器(22)以及定位传感器(24)位于输送带(21)的上方，测距传感器(22)以及定位传感器(24)安装于被动轮(20)一侧激光打标机(1)的机座(25)上；限位传感器(23)位于输送带(21)的上方，限位传感器(23)安装于激光头(16)旁边的激光打标机(1)的机座(25)上，测距传感器(22)到定位传感器(24)的距离与激光头(16)到限位传感器(23)的距离相等；控制器(4)通过控制线与控制系统(9)、电磁线圈(14)、电机(19)、测距传感器(22)、限位传感器(23)以及定位传感器(24)连接。
  2. 根据权利要求1所述的食品激光打标机，其特征在于：所述的磁流体(13)被密封于容器(10)内，浮体(11)悬浮于磁流体(13)内，导杆(12)与导孔(15)动配合连接。
  3. 根据权利要求2所述的食品激光打标机，其特征在于：所述的导杆(12)的外径小于导孔(15)的内径。
  4. 根据权利要求1所述的食品激光打标机，其特征在于：所述的主动轮(18)以及被动轮(20)按顺时针方向转动，输送带(21)输送食品(17) 运行的方向是：由测距传感器(22)指向限位传感器(23)。
  5. 根据权利要求1所述的食品激光打标机，其特征在于：所述的输送带(21)的上输送面(27)与水平线平行。
  6. 根据权利要求1所述的食品激光打标机，其特征在于：所述的限位传感器(23)位于激光头(16)的右边，定位传感器(24)位于测距传感器(22)的右边，测距传感器(22)中心线到定位传感器(24)中心线的距离与激光头(16)中心线到限位传感器(23)中心线的距离相等。
  7. 根据权利要求1所述的食品激光打标机，其特征在于：所述的导杆(12)与导孔(15)之间设有密封件(27)。
PCT/CN2014/090640 2014-02-10 2014-11-07 食品激光打标机 WO2015117438A1 (zh)

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