CN106586069B - Packagine machine capsule aluminium paper breakage detection device - Google Patents
Packagine machine capsule aluminium paper breakage detection device Download PDFInfo
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- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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Abstract
Description
技术领域technical field
本发明涉及卷烟机设备技术领域，尤其涉及一种包装机小盒铝纸破损检测装置。The invention relates to the technical field of cigarette machine equipment, in particular to a device for detecting the breakage of aluminum paper in a small box of a packaging machine.
背景技术Background technique
目前，从市场反馈信息来看，小盒烟包在包装过程中均会存在铝纸破损的情况。而现有的包装机自身并没有铝纸破损检测功能，因此，很有必要设计一种小盒铝纸破损检测装置，以弥补当前小盒包装设备在铝纸检测功能上的不足。At present, judging from market feedback information, the aluminum paper is damaged during the packaging process of small cigarette packs. However, the existing packaging machine itself does not have the function of detecting aluminum paper breakage. Therefore, it is necessary to design a small box aluminum paper breakage detection device to make up for the deficiency of the current small box packaging equipment in the aluminum paper detection function.
发明内容SUMMARY OF THE INVENTION
本发明的目的是提供一种包装机小盒铝纸破损检测装置，能够通过非接触方式对小盒铝纸进行实时在线检测，能对小盒铝纸的完好情况进行有效检测，避免不合格烟包流入下道工序。The purpose of the present invention is to provide a small box aluminum paper damage detection device for a packaging machine, which can perform real-time online detection on the small box aluminum paper through a non-contact method, can effectively detect the integrity of the small box aluminum paper, and avoid unqualified cigarettes. The package flows into the next process.
本发明采用的技术方案为：The technical scheme adopted in the present invention is:
一种包装机小盒铝纸破损检测装置，包括检测装置、第一、第二检测电路和单片机，所述的检测装置包括第一光电检测器、第二光电检测器、第一铝纸破损探测元件和第二铝纸破损探测元件；所述第一、第二光电检测器的探头均固定在烟包输送通道的侧壁的同一侧，且二者之间的距离等于一支烟的长度；所述第一、第二铝纸破损探测元件设置在第一光电检测器和第二光电检测器之间，且第一、第二铝纸破损探测元件分别相对设置在烟包输送通道的侧壁的不同侧，二者的高度与烟包宽度相同，宽度为烟包长度的1/5；第一光电检测器、第二光电检测器的输出端分别连接单片机的输入端，第一、第二铝纸破损探测元件分别通过第一、第二检测电路连接单片机的输入端；单片机的输出端连接剔除装置的输入端；An aluminum paper damage detection device for a small box of a packaging machine, comprising a detection device, a first and a second detection circuit and a single-chip microcomputer, and the detection device includes a first photoelectric detector, a second photoelectric detector, and a first aluminum paper damage detection device. element and the second aluminum paper damage detection element; the probes of the first and second photoelectric detectors are fixed on the same side of the side wall of the cigarette pack conveying channel, and the distance between the two is equal to the length of a cigarette; The first and second aluminum paper damage detection elements are disposed between the first photodetector and the second photoelectric detector, and the first and second aluminum paper damage detection elements are respectively disposed opposite to the side walls of the cigarette pack conveying channel On different sides of the cigarette pack, the height of the two is the same as the width of the cigarette pack, and the width is 1/5 of the length of the cigarette pack; The aluminum paper damage detection element is connected to the input end of the single-chip microcomputer through the first and second detection circuits respectively; the output end of the single-chip microcomputer is connected to the input end of the rejection device;
所述的剔除装置包括压缩空气源、空气喷嘴、电磁阀，所述的单片机的输出端连接电磁阀控制输入端，空气喷嘴通过电磁阀连接压缩空气源，所述的空气喷嘴设置在烟包输送通道的一侧，且在检测装置的下游；The rejecting device includes a compressed air source, an air nozzle, and a solenoid valve. The output end of the single-chip microcomputer is connected to the control input end of the solenoid valve. The air nozzle is connected to the compressed air source through the solenoid valve. one side of the channel and downstream of the detection device;
所述的检测电路包括用于对铝箔纸完整情况进行检测的振荡电路、用于调整检测振荡电路振幅的灵敏度调整电路、基准振荡电路、用于将两频率和幅度相同、而相位相反的正弦波放大和变换处理为频率和幅度相同、而相位相反的矩形波信号的震荡信号处理电路、用于对检测用矩形波和基准矩形波进行叠加的混合放大电路，所述的检测震荡与基准振荡电路的输出端分别通过震荡信号处理电路连接混合放大电路的第一、第二输出端，混合放大电路的输出端连接单片机的输出端。The detection circuit includes an oscillation circuit for detecting the integrity of the aluminum foil paper, a sensitivity adjustment circuit for adjusting the amplitude of the detection oscillation circuit, a reference oscillation circuit, and a sine wave with the same frequency and amplitude but opposite phases. Oscillation signal processing circuit for amplifying and transforming rectangular wave signals with the same frequency and amplitude but opposite phase, and a hybrid amplifier circuit for superimposing the detection rectangular wave and the reference rectangular wave, the detection oscillation and the reference oscillation circuit The output ends of the hybrid amplifying circuit are respectively connected to the first and second output ends of the hybrid amplifying circuit through the oscillating signal processing circuit, and the output end of the hybrid amplifying circuit is connected to the output end of the single-chip microcomputer.
所述的检测震荡电路包括第一振荡管V1、第一电感L1、第一电阻R1、第二电阻R2、第三电阻R3和第一电容C1；灵敏度调整电路包括可变电阻器RP、第一电容C1、稳压二极管VS，所述的第一电感L1、可变电阻器RP和第一电阻R1串联在第一振荡管V1的基极和发射极之间，所述的第二、第三、第四电容三者串联后并联在可变电阻RP的两端；所述第一振荡管V1的基极通过第一电容C1与可变电阻的动触头相连，稳压二极管一端与可变电阻RP的动触头相连，另一端与接地端相连接；所述的第二电阻R2与第一电感L1并联，第三电阻一端与第一振荡管V1的集电极相连，另一端与接地端相连，所述的第四电容C4与第一电阻R1并联。The detection oscillation circuit includes a first oscillation tube V1, a first inductor L1, a first resistor R1, a second resistor R2, a third resistor R3 and a first capacitor C1; the sensitivity adjustment circuit includes a variable resistor RP, a first The capacitor C1, the Zener diode VS, the first inductor L1, the variable resistor RP and the first resistor R1 are connected in series between the base and the emitter of the first oscillator V1, the second and third , and the fourth capacitor are connected in series and connected in parallel at both ends of the variable resistor RP; the base of the first oscillator tube V1 is connected to the moving contact of the variable resistor through the first capacitor C1, and one end of the zener diode is connected to the variable resistor. The moving contact of the resistor RP is connected, and the other end is connected to the ground terminal; the second resistor R2 is connected in parallel with the first inductor L1, one end of the third resistor is connected to the collector of the first oscillator tube V1, and the other end is connected to the ground terminal The fourth capacitor C4 is connected in parallel with the first resistor R1.
所述的基准振荡电路包括有第二振荡管V2、第二电感L2、第四电阻、第六、第七、第八、第九电容；所述的第七、第八、第九电容依次串联后并联在可变电阻器BP两端，且第八电容并联在第二振荡管V2的集电极与发射极之间，第二振荡管V2的基极与第一振荡管V1的基极相连，所述的第二电感L2与第七电容相并联，第四电阻与第八电容相并联，第六电容一端与第二振荡管V2的集电极相连，另一端与接地端相连。The reference oscillator circuit includes a second oscillator tube V2, a second inductor L2, a fourth resistor, a sixth, seventh, eighth, and ninth capacitors; the seventh, eighth, and ninth capacitors are connected in series in sequence. It is then connected in parallel to both ends of the variable resistor BP, and the eighth capacitor is connected in parallel between the collector and the emitter of the second oscillating tube V2, and the base of the second oscillating tube V2 is connected to the base of the first oscillating tube V1, The second inductor L2 is connected in parallel with the seventh capacitor, the fourth resistor is connected in parallel with the eighth capacitor, one end of the sixth capacitor is connected to the collector of the second oscillating tube V2, and the other end is connected to the ground.
所述的震荡信号处理电路由六非门芯片MC14069以及外围电路构成，所述的外围电路为：第五电阻R5、第六电阻R6、第八电阻R8、第九电阻R9、第十电容C10、第十一电容C11，所述第五电阻R5与第十电容C10串联在六非门芯片MC14069的第一输入端，所述第六电阻R6与第十一电容C11串联在六非门芯片MC14069的第二输入端；第八电阻R8串联在六非门芯片MC14069的第一输出端、第九电阻R9串联在六非门芯片MC14069的第二输出端。The oscillating signal processing circuit is composed of a six-not gate chip MC14069 and a peripheral circuit. The peripheral circuit is: the fifth resistor R5, the sixth resistor R6, the eighth resistor R8, the ninth resistor R9, the tenth capacitor C10, The eleventh capacitor C11, the fifth resistor R5 and the tenth capacitor C10 are connected in series with the first input end of the six-not gate chip MC14069, the sixth resistor R6 and the eleventh capacitor C11 are connected in series with the six-not gate chip MC14069 The second input end; the eighth resistor R8 is connected in series with the first output end of the six-not gate chip MC14069, and the ninth resistor R9 is connected in series with the second output end of the six-not gate chip MC14069.
所述的混合放大器由二极管VD、第十电阻R10、第十一电阻R11和第五电容C5、场效应管VF，所述二极管VD的正极与场效应管VF的栅极，场效应管VF的漏极通过第十一电阻与六非门芯片MC14069的7引脚相连，六非门芯片MC14069的7引脚通过第七电阻与第一电感L1和第二电感L2的公共端相连接；所述第十电阻R10和第五电容C5串联后一端与场效应管VF的栅极相连，另一端与接地端相连，场效应管VF的漏极与单片机输入端相连。The hybrid amplifier consists of a diode VD, a tenth resistor R10, an eleventh resistor R11, a fifth capacitor C5, a field effect transistor VF, the anode of the diode VD and the gate of the field effect transistor VF, the The drain is connected to the 7-pin of the six-not gate chip MC14069 through the eleventh resistor, and the 7-pin of the six-not gate chip MC14069 is connected to the common terminal of the first inductor L1 and the second inductor L2 through the seventh resistor; the After the tenth resistor R10 and the fifth capacitor C5 are connected in series, one end is connected to the gate of the field effect transistor VF, the other end is connected to the ground, and the drain of the field effect transistor VF is connected to the input end of the single-chip microcomputer.
还包括有剔除装置，所述的剔除装置包括压缩空气源、空气喷嘴、电磁阀，所述的单片机的输出端连接电磁阀控制输入端，空气喷嘴通过电磁阀连接压缩空气源，所述的空气喷嘴设置在烟包输送通道的一侧，且在检测装置的下游，单片机的输出端连接电磁阀控制输入端。It also includes a rejecting device. The rejecting device includes a compressed air source, an air nozzle, and a solenoid valve. The output end of the single-chip microcomputer is connected to the control input end of the solenoid valve. The air nozzle is connected to the compressed air source through the solenoid valve. The nozzle is arranged on one side of the cigarette pack conveying channel and downstream of the detection device, and the output end of the single-chip microcomputer is connected to the control input end of the solenoid valve.
本发明通过利用电磁感应原理：有交流电通过的线圈会产生变化的磁场，磁场能在小盒烟包铝纸内部感生涡流，涡流又会产生磁场倒过来影响线圈的磁场，线圈的感生磁场被检测出来后，通过对其进行比较分析就能检测出小盒铝纸的破损情况。从而通过非接触方式对小盒铝纸进行实时在线检测，能对小盒铝纸的完好情况进行有效检测，避免不合格烟包流入下道工序，该装置具有灵敏度高、运行可靠等优点。The present invention utilizes the principle of electromagnetic induction: the coil passing through the alternating current will generate a changing magnetic field, the magnetic field can induce eddy currents in the aluminum paper of the small box of cigarettes, and the eddy currents will generate a magnetic field which in turn affects the magnetic field of the coil, and the induced magnetic field of the coil After being detected, the damage of the small box of aluminum paper can be detected by comparative analysis. Therefore, the real-time online detection of the small box of aluminum paper can be carried out in a non-contact way, which can effectively detect the integrity of the small box of aluminum paper, and prevent the unqualified cigarette packs from flowing into the next process. The device has the advantages of high sensitivity and reliable operation.
附图说明Description of drawings
图1为本发明的电路原理框图；Fig. 1 is the circuit principle block diagram of the present invention;
图2为本发明所述检测电路的电路原理框图；Fig. 2 is the circuit principle block diagram of the detection circuit of the present invention;
图3为本发明所述检测电路的电路原理图。FIG. 3 is a circuit schematic diagram of the detection circuit according to the present invention.
具体实施方式Detailed ways
如图1、2和3所示，本发明包括一种包装机小盒铝纸破损检测装置，包括检测装置、第一、第二检测电路和单片机，所述的检测装置包括第一光电检测器、第二光电检测器、第一铝纸破损探测元件和第二铝纸破损探测元件；所述第一、第二光电检测器的探头均固定在烟包输送通道的侧壁的同一侧，且二者之间的距离等于一支烟的长度；所述第一、第二铝纸破损探测元件设置在第一光电检测器和第二光电检测器之间，且第一、第二铝纸破损探测元件分别相对设置在烟包输送通道的侧壁的不同侧，二者的高度与烟包宽度相同，宽度为烟包长度的1/5；第一光电检测器、第二光电检测器的输出端分别连接单片机的输入端，第一、第二铝纸破损探测元件分别通过第一、第二检测电路连接单片机的输入端；单片机的输出端连接剔除装置的输入端；As shown in Figures 1, 2 and 3, the present invention includes a small box aluminum paper damage detection device for a packaging machine, including a detection device, first and second detection circuits and a single-chip microcomputer, and the detection device includes a first photoelectric detector. , the second photoelectric detector, the first aluminum paper damage detection element and the second aluminum paper damage detection element; the probes of the first and second photoelectric detectors are fixed on the same side of the side wall of the cigarette pack conveying channel, and The distance between the two is equal to the length of a cigarette; the first and second aluminum paper breakage detection elements are arranged between the first photodetector and the second photodetector, and the first and second aluminum papers are broken The detection elements are respectively arranged on different sides of the side wall of the cigarette pack conveying channel, the height of the two is the same as the width of the cigarette pack, and the width is 1/5 of the length of the cigarette pack; the output of the first photodetector and the second photodetector The terminals are respectively connected to the input terminals of the single-chip microcomputer; the first and second aluminum paper damage detection elements are respectively connected to the input terminals of the single-chip microcomputer through the first and second detection circuits; the output terminal of the single-chip microcomputer is connected to the input terminal of the rejection device;
所述的剔除装置包括压缩空气源、空气喷嘴、电磁阀，所述的单片机的输出端连接电磁阀控制输入端，空气喷嘴通过电磁阀连接压缩空气源，所述的空气喷嘴设置在烟包输送通道的一侧，且在检测装置的下游；The rejecting device includes a compressed air source, an air nozzle, and a solenoid valve. The output end of the single-chip microcomputer is connected to the control input end of the solenoid valve. The air nozzle is connected to the compressed air source through the solenoid valve. one side of the channel and downstream of the detection device;
所述的检测电路包括用于对铝箔纸完整情况进行检测的振荡电路、用于调整检测振荡电路振幅的灵敏度调整电路、基准振荡电路、用于将两频率和幅度相同、而相位相反的正弦波放大和变换处理为频率和幅度相同、而相位相反的矩形波信号的震荡信号处理电路、用于对检测用矩形波和基准矩形波进行叠加的混合放大电路，所述的检测震荡与基准振荡电路的输出端分别通过震荡信号处理电路连接混合放大电路的第一、第二输出端，混合放大电路的输出端连接单片机的输出端。The detection circuit includes an oscillation circuit for detecting the integrity of the aluminum foil paper, a sensitivity adjustment circuit for adjusting the amplitude of the detection oscillation circuit, a reference oscillation circuit, and a sine wave with the same frequency and amplitude but opposite phases. Oscillation signal processing circuit for amplifying and transforming rectangular wave signals with the same frequency and amplitude but opposite phase, and a hybrid amplifier circuit for superimposing the detection rectangular wave and the reference rectangular wave, the detection oscillation and the reference oscillation circuit The output ends of the hybrid amplifying circuit are respectively connected to the first and second output ends of the hybrid amplifying circuit through the oscillating signal processing circuit, and the output end of the hybrid amplifying circuit is connected to the output end of the single-chip microcomputer.
所述的检测震荡电路包括第一振荡管V1、第一电感L1、第一电阻R1、第二电阻R2、第三电阻R3和第一电容C1；灵敏度调整电路包括可变电阻器RP、第一电容C1、稳压二极管VS，所述的第一电感L1、可变电阻器RP和第一电阻R1串联在第一振荡管V1的基极和发射极之间，所述的第二、第三、第四电容三者串联后并联在可变电阻RP的两端；所述第一振荡管V1的基极通过第一电容C1与可变电阻的动触头相连，稳压二极管一端与可变电阻RP的动触头相连，另一端与接地端相连接；所述的第二电阻R2与第一电感L1并联，第三电阻一端与第一振荡管V1的集电极相连，另一端与接地端相连，所述的第四电容C4与第一电阻R1并联。The detection oscillation circuit includes a first oscillation tube V1, a first inductor L1, a first resistor R1, a second resistor R2, a third resistor R3 and a first capacitor C1; the sensitivity adjustment circuit includes a variable resistor RP, a first The capacitor C1, the Zener diode VS, the first inductor L1, the variable resistor RP and the first resistor R1 are connected in series between the base and the emitter of the first oscillator V1, the second and third , and the fourth capacitor are connected in series and connected in parallel at both ends of the variable resistor RP; the base of the first oscillator tube V1 is connected to the moving contact of the variable resistor through the first capacitor C1, and one end of the zener diode is connected to the variable resistor. The moving contact of the resistor RP is connected, and the other end is connected to the ground terminal; the second resistor R2 is connected in parallel with the first inductor L1, one end of the third resistor is connected to the collector of the first oscillator tube V1, and the other end is connected to the ground terminal The fourth capacitor C4 is connected in parallel with the first resistor R1.
所述的基准振荡电路包括有第二振荡管V2、第二电感L2、第四电阻、第六、第七、第八、第九电容；所述的第七、第八、第九电容依次串联后并联在可变电阻器BP两端，且第八电容并联在第二振荡管V2的集电极与发射极之间，第二振荡管V2的基极与第一振荡管V1的基极相连，所述的第二电感L2与第七电容相并联，第四电阻与第八电容相并联，第六电容一端与第二振荡管V2的集电极相连，另一端与接地端相连。The reference oscillator circuit includes a second oscillator tube V2, a second inductor L2, a fourth resistor, a sixth, seventh, eighth, and ninth capacitors; the seventh, eighth, and ninth capacitors are connected in series in sequence. It is then connected in parallel to both ends of the variable resistor BP, and the eighth capacitor is connected in parallel between the collector and the emitter of the second oscillating tube V2, and the base of the second oscillating tube V2 is connected to the base of the first oscillating tube V1, The second inductor L2 is connected in parallel with the seventh capacitor, the fourth resistor is connected in parallel with the eighth capacitor, one end of the sixth capacitor is connected to the collector of the second oscillating tube V2, and the other end is connected to the ground.
所述的震荡信号处理电路由六非门芯片MC14069以及外围电路构成，所述的外围电路为：第五电阻R5、第六电阻R6、第八电阻R8、第九电阻R9、第十电容C10、第十一电容C11，所述第五电阻R5与第十电容C10串联在六非门芯片MC14069的第一输入端，所述第六电阻R6与第十一电容C11串联在六非门芯片MC14069的第二输入端；第八电阻R8串联在六非门芯片MC14069的第一输出端、第九电阻R9串联在六非门芯片MC14069的第二输出端。The oscillating signal processing circuit is composed of a six-not gate chip MC14069 and a peripheral circuit. The peripheral circuit is: the fifth resistor R5, the sixth resistor R6, the eighth resistor R8, the ninth resistor R9, the tenth capacitor C10, The eleventh capacitor C11, the fifth resistor R5 and the tenth capacitor C10 are connected in series with the first input end of the six-not gate chip MC14069, the sixth resistor R6 and the eleventh capacitor C11 are connected in series with the six-not gate chip MC14069 The second input end; the eighth resistor R8 is connected in series with the first output end of the six-not gate chip MC14069, and the ninth resistor R9 is connected in series with the second output end of the six-not gate chip MC14069.
所述的包装机小盒铝纸破损检测装置，所述的混合放大器由二极管VD、第十电阻R10、第十一电阻R11和第五电容C5、场效应管VF，所述二极管VD的正极与场效应管VF的栅极，场效应管VF的漏极通过第十一电阻与六非门芯片MC14069的7引脚相连，六非门芯片MC14069的7引脚通过第七电阻与第一电感L1和第二电感L2的公共端相连接；所述第十电阻R10和第五电容C5串联后一端与场效应管VF的栅极相连，另一端与接地端相连，场效应管VF的漏极与单片机输入端相连。In the packaging machine small box aluminum paper damage detection device, the hybrid amplifier consists of a diode VD, a tenth resistor R10, an eleventh resistor R11, a fifth capacitor C5, and a field effect transistor VF. The gate of the field effect transistor VF, the drain of the field effect transistor VF is connected to the 7th pin of the six-not gate chip MC14069 through the eleventh resistor, and the 7th pin of the six-not gate chip MC14069 is connected to the first inductor L1 through the seventh resistor. Connected to the common terminal of the second inductor L2; the tenth resistor R10 and the fifth capacitor C5 are connected in series with one end connected to the gate of the field effect transistor VF, the other end connected to the ground terminal, and the drain of the field effect transistor VF is connected to the The input terminal of the single-chip microcomputer is connected.
还包括有剔除装置，所述的剔除装置包括压缩空气源、空气喷嘴、电磁阀，所述的单片机的输出端连接电磁阀控制输入端，空气喷嘴通过电磁阀连接压缩空气源，所述的空气喷嘴设置在烟包输送通道的一侧，且在检测装置的下游，单片机的输出端连接电磁阀控制输入端。It also includes a rejecting device. The rejecting device includes a compressed air source, an air nozzle, and a solenoid valve. The output end of the single-chip microcomputer is connected to the control input end of the solenoid valve. The air nozzle is connected to the compressed air source through the solenoid valve. The nozzle is arranged on one side of the cigarette pack conveying channel and downstream of the detection device, and the output end of the single-chip microcomputer is connected to the control input end of the solenoid valve.
该小盒铝纸破损检测装置利用电磁感应原理，有交流电通过的线圈会产生变化的磁场，磁场能在小盒烟包铝纸内部感生涡流，涡流又会产生磁场倒过来影响线圈的磁场，线圈的感生磁场被检测出来后，通过对其进行比较分析就能检测出小盒铝纸的破损情况。The small box of aluminum paper damage detection device uses the principle of electromagnetic induction. The coil passing through the alternating current will generate a changing magnetic field. The magnetic field can induce eddy currents inside the small box of cigarette-packed aluminum paper. After the induced magnetic field of the coil is detected, the damage of the small box of aluminum paper can be detected by comparing and analyzing it.
小盒铝纸破损检测装置的工作原理：小盒烟包完成铝纸、商标纸包装后，以侧面向上的方式经小盒烟包输送通道进入CH喂料入口通道。当第一检测器检测到小盒烟包时，第一、第二铝纸破损探测元件检测小盒烟包破损情况，当第二检测器检测到小盒烟包时第一、第二铝纸破损探测元件结束检测，破损烟包经过压缩空气喷嘴时被压缩空气剔除。该检测装置利用烟包的移动对每包烟分段进行20次探测，为了使小盒铝纸破损检测装置可靠运行、且保持应有的灵敏度，小盒烟包输送通道皮带需恒速运行，并使烟包运行时在两侧壁中间位置，小盒烟包倾斜通过第一、第二铝纸破损探测元件的情况需通过控制功能作调整补偿。The working principle of the small box aluminum paper damage detection device: After the small box cigarette pack is packed with aluminum paper and trademark paper, it enters the CH feeding inlet channel through the small box cigarette pack conveying channel in a side-up manner. When the first detector detects the small box of cigarette packs, the first and second aluminum paper damage detection elements detect the damage of the small box of cigarette packs, and when the second detector detects the small box of cigarette packs, the first and second aluminum paper The damage detection element ends the detection, and the damaged cigarette packets are rejected by the compressed air when passing through the compressed air nozzle. The detection device uses the movement of the cigarette pack to detect each pack of cigarettes 20 times. In order to make the small box aluminum paper damage detection device operate reliably and maintain the due sensitivity, the small box cigarette pack conveying channel belt needs to run at a constant speed. And make the cigarette pack run at the middle position of the two side walls, and the situation that the small pack of cigarette packs pass through the first and second aluminum paper damage detection elements obliquely needs to be adjusted and compensated by the control function.
该检测电路由检测振荡器、基准振荡器、震荡信号处理器、混合放大器等组成（见图2）。检测振荡器由震荡管V1、线圈L1、电容器C1和电阻器R1-R3等组成。基准振荡器由震荡管V2、电感器L2、电容器C6-C9和电阻器R2-R4组成。混合放大器由二极管VD、电阻器R12、R13、电容器C13等组成。The detection circuit consists of a detection oscillator, a reference oscillator, an oscillatory signal processor, and a mixing amplifier (see Figure 2). The detection oscillator is composed of the oscillator tube V1, the coil L1, the capacitor C1 and the resistors R1-R3. The reference oscillator is composed of oscillator tube V2, inductor L2, capacitors C6-C9 and resistors R2-R4. The hybrid amplifier is composed of diode VD, resistors R12, R13, capacitor C13 and so on.
在工作状态时，从V1和V2的集电极分别输出两个频率相同的正弦震荡信号，两信号经震荡处理器放大和变换处理为两个频率和幅度相同、而相位相反的矩形波信号，再经R10、R11和VD混合后送至VF的栅极。在检测线圈L1未检测到铝纸时，两路方波信号的频率相同、相位相反，VF的栅极电压低于2.5V；当检测线圈L1探测到铝纸时，检测振荡器的工作频率将高于基准振荡器的频率，使VF的栅极电压超过2.5V，单片机依据AD转换后的信号对小盒铝纸完好情况判断处理。本发明通过非接触方式对小盒铝纸进行实时在线检测，能对小盒铝纸的完好情况进行有效检测，避免不合格烟包流入下道工序，该装置具有灵敏度高、运行可靠等优点。In the working state, two sinusoidal oscillation signals with the same frequency are output from the collectors of V1 and V2 respectively. The two signals are amplified and transformed by the oscillation processor into two rectangular wave signals with the same frequency and amplitude but opposite phases. After being mixed with R10, R11 and VD, it is sent to the gate of VF. When the detection coil L1 does not detect the aluminum paper, the two square wave signals have the same frequency and opposite phases, and the gate voltage of VF is lower than 2.5V; when the detection coil L1 detects the aluminum paper, the operating frequency of the detection oscillator will be If the frequency of the reference oscillator is higher than that of the reference oscillator, the gate voltage of VF exceeds 2.5V, and the single-chip microcomputer judges and processes the integrity of the small box aluminum paper according to the signal after AD conversion. The present invention conducts real-time on-line detection of the small box of aluminum paper in a non-contact manner, can effectively detect the integrity of the small box of aluminum paper, avoids unqualified cigarette packs from flowing into the next process, and has the advantages of high sensitivity, reliable operation, and the like.
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