CN107192715B - Novel cigarette machine tipping paper connects detects device - Google Patents

Abstract

The invention discloses a novel tipping paper joint detection device of a cigarette making machine, which comprises an infrared photoelectric detection head and a control box, wherein the control box comprises a box body, a display screen and an input key are arranged on the front surface of the box body, a detection head wiring end and an output wiring end are arranged on the box body, a control circuit board is arranged in the box body, the infrared photoelectric detection head is connected with the detection head wiring end of the control box, the infrared photoelectric detection head comprises an infrared photoelectric transmitting tube and an infrared photoelectric receiving tube, lenses of the infrared photoelectric transmitting tube and the infrared photoelectric receiving tube all adopt convex lenses, the transmitting frequency of the infrared photoelectric transmitting tube is 800KHz, the control circuit board comprises a central processing unit, a signal isolation unit, a display unit, a key unit, a digital-to-analog conversion unit, a transmitting transistor and a power conversion unit, all brands of tipping paper joints can be effectively identified, defective cigarettes with the tipping paper joints are prevented from flowing into a next process, and the product quality and the reputation of the product are improved.

Description

A new type of cigarette machine tipping paper joint detection device

Technical field

The invention relates to the technical field of cigarette machine tipping paper joint detection, and in particular to a new type of cigarette machine tipping paper joint detection device.

Background technique

The mouthpiece of a cigarette needs to be wrapped in parchment paper. But in general, a plate of tipping paper is not a complete piece of tipping paper. There are more or less paper joints in the tipping paper. When the cigarette rolling machine is rolling cigarettes, it must pass through the tipping paper joints. The detector detects it, and then through the shift of the signal, the Y4 valve of the cutting drum rejects the cigarettes with connectors.

The current tipping paper joint detector is an infrared detector. During detection, the tipping paper is located between the infrared emitting tube and the infrared receiving tube. The infrared emitting tube emits infrared light of a certain wavelength. The infrared light is penetrating and has Because the tipping paper on the inner joint has an extra layer of tape, it is much thicker than the normal tipping paper, and infrared rays cannot penetrate it. The tipping paper without internal joints is very thin, and infrared rays of a certain wavelength can penetrate freely. When the tipping paper has an internal joint, the infrared receiving tube below the infrared transmitting tube cannot receive the infrared rays emitted from above. The detector generates a 24V DC high-level pulse and sends it to the shadow register of the circuit board or PLC. It is then shifted through a shift register and this is the paper joint signal.

To sum up, the current tipping paper joint detector can only detect the paper joints of light-colored and light-transmitting tipping paper. However, due to the different thickness and color depth of the tipping paper used in the production of different types of cigarettes, the existing tipping paper joint detector has limitations in use. For darker and thicker colors and poor light transmittance, The paper joints of poor tipping paper cannot be effectively identified, and the normal darker and thicker tipping paper is mistakenly treated as tipping paper with joints, resulting in a large amount of rolled tipping paper that cannot be used and wasted. In order not to waste the tipping paper, the machine operator bypassed the infrared detector when installing the tipping paper. This caused the cigarettes with internal joints in the tipping paper to be unable to be removed, and the unqualified cigarettes were allowed to flow. If it enters the next process, it is likely to flow into the market, and there will be great quality risks.

Contents of the invention

The purpose of the present invention is to provide a new type of cigarette machine tipping paper joint detection device, which can not only effectively detect the paper joints of light-colored tipping paper, but also can effectively identify the tipping paper joints of various brands, avoiding the problem of Cigarettes with defects in the tipping paper joints flow into the next process, improving product quality and product reputation.

The technical solution adopted by the present invention is:

A new type of cigarette machine tipping paper joint detection device, including an infrared photoelectric detection head and a control box. The control box includes a box body. The front of the box body is provided with a display screen and input buttons, and the box body is provided with detection head wiring. terminal and output terminal, the box body is equipped with a control circuit board, and the infrared photoelectric detector is connected to the detection head terminal of the control box. The infrared photoelectric detector includes an infrared photoelectric transmitter tube and an infrared photoelectric receiver tube, an infrared photoelectric transmitter tube and an infrared photoelectric receiver. The tubes are installed relative to each other, and the tipping paper passes between the infrared photoelectric emitting tube and the infrared photoelectric receiving tube; the lenses of the infrared photoelectric emitting tube and the infrared photoelectric receiving tube adopt convex lenses, and the emission frequency emitted by the infrared photoelectric emitting tube is 800KHz;

The control circuit board includes a central processing unit, a signal isolation unit, a display unit, a key unit, a digital-to-analog conversion unit, a transmitting transistor and a power conversion unit. The first output end of the power conversion unit is connected to an infrared photoelectric detector, and the power conversion unit The second output end is connected to the display unit, the signal output end of the infrared photoelectric detector is connected to the collection signal receiving end of the central processing unit through the signal isolation unit, the communication end of the central processing unit is connected to the button unit, and the display end of the central processing unit is connected to the display unit , the signal output end of the central processing unit is connected to the digital-to-analog conversion unit, the display unit is connected to the digital-to-analog conversion unit, the digital-to-analog conversion unit is connected to the emission transistor, the output end of the emission transistor is connected to the output terminal, and the output terminal is used to connect to the cigarette machine.

The box body is square, the detection head terminal is located on the right side of the box body, and the output terminal is located on the left side of the box body.

The front of the box is provided with a connector indicator light and a power indicator light.

The present invention uses an infrared photoelectric detector to detect the thickness of tipping paper. The infrared photoelectric transmitting tube and the infrared photoelectric receiving tube adopt high performance and high penetrating transmitting tubes and receiving tubes. The transmitting frequency of the infrared photoelectric transmitting tube is 800KHz. And the lenses of the infrared photoelectric transmitting tube and the infrared photoelectric receiving tube use convex lenses, with the convex surface facing the direction of the transmitting tube and the flat surface facing the direction of the transmitting tube. The infrared light emitted by the infrared photoelectric transmitting tube passes through the convex lens to turn irregular divergent light into uniform The parallel light passes through the tipping paper and then converges to the infrared photoelectric receiving tube for reception through the convex lens. This structure controls the emission angle of the emission tube to achieve higher penetration performance.

The infrared light emitted by the infrared photoelectric transmitting tube passes through the convex lens to change the irregular divergent light into uniform parallel light. After passing through the tipping paper, it is condensed by the convex lens to the infrared photoelectric receiving tube for reception; then the collected information is isolated by the signal The unit sends it to the central processing unit, which performs analysis and judgment processing, and then displays the detection information on the display screen for easy viewing by the inspector. After that, the judgment information is converted through the digital-to-analog conversion unit and converted into analog quantities, and then transmitted from the output terminal to other related mechanisms of the cigarette machine through the transmitting transistor to perform corresponding actions. This design can effectively detect The tipping paper joints of various colors and thicknesses prevent defective cigarettes with tipping paper joints from flowing into the next process, improving product quality and product reputation.

Description of the drawings

Figure 1 is a schematic structural diagram of the present invention;

Figure 2 is a circuit principle block diagram of the present invention;

Figure 3 is an optical path diagram of the infrared photoelectric detection head of the present invention.

Detailed ways

As shown in Figures 1 and 2, the present invention includes an infrared photoelectric detector 8 and a control box. The control box includes a box 1. The box 1 is square. The front of the box 1 is provided with a display screen 2 and input buttons. 3. The front of the box 1 is also equipped with a connector indicator light 6 and a power indicator light 7. When the infrared photoelectric detector 8 is connected to the control circuit board in the box 1, the connector indicator light 6 emits red light. When the device is powered on , the power indicator light 7 emits green light; the box body 1 is provided with a detection head terminal 5 and an output terminal 4. The detection head terminal 5 is located on the right side of the box body 1, and the output terminal 4 is located on the box body 1 of the left side. The box body 1 is provided with a control circuit board, and the infrared photoelectric detector 8 is connected to the detection head terminal 5 of the control box. The infrared photoelectric detector 8 includes an infrared photoelectric transmitter tube and an infrared photoelectric receiver tube, and an infrared photoelectric transmitter tube and an infrared photoelectric receiver tube. They are installed relative to each other, and the tipping paper passes between the infrared photoelectric transmitting tube and the infrared photoelectric receiving tube; the lenses of the infrared photoelectric transmitting tube and the infrared photoelectric receiving tube adopt convex lenses, and the emission frequency of the infrared photoelectric transmitting tube is 800KHz. ;

The control circuit board includes a central processing unit, a signal isolation unit, a display unit, a key unit, a digital-to-analog conversion unit, a transmitting transistor and a power conversion unit. The first output end of the power conversion unit is connected to the infrared photoelectric detector 8, and the power conversion unit The second output end of the unit is connected to the display unit. The power conversion unit mainly processes the power supply and provides the required voltage for different modules to ensure the normal power supply of the device. The signal output end of the infrared photoelectric detector 8 is connected to the collection signal receiving end of the central processing unit through the signal isolation unit. The communication end of the central processing unit is connected to the key unit. The key unit is connected to the input button 3. Data can be input through the input button 3; central processing The display end of the unit is connected to the display unit, and the display unit is connected to the display screen 2 to intuitively display the data, allowing the user to understand the detection situation more clearly; the signal output end of the central processing unit is connected to the digital-to-analog conversion unit, and the connection number of the display unit is Analog conversion unit, the digital-to-analog conversion unit converts digital signals into analog signals, the digital-to-analog conversion unit is connected to the transmitting transistor, the output end of the transmitting transistor is connected to the output terminal 4, and the output terminal 4 is used to connect to the cigarette machine.

The working principle of the present invention is explained below in conjunction with the accompanying drawings:

First, install the infrared photoelectric transmitting tube and the infrared photoelectric receiving tube relative to each other through the mounting bracket, so that the tipping paper passes between the infrared photoelectric transmitting tube and the infrared photoelectric receiving tube. The infrared photoelectric transmitting tube and the infrared photoelectric receiving tube are made of high-performance, Highly penetrating transmitting tube and receiving tube, the transmitting frequency of the infrared photoelectric transmitting tube is 800KHz, and the frequency of 200KHz is required to penetrate 0.5 mm paper. The thickness of tipping paper of different brands is generally only 10 microns-50 microns, 800KHz infrared light It can completely penetrate tipping paper, even if the color is dark, it will not be affected. And the lenses of the infrared photoelectric transmitting tube and the infrared photoelectric receiving tube use convex lenses, with the convex surface facing the direction of the transmitting tube and the flat surface facing the direction of the transmitting tube. The infrared light emitted by the infrared photoelectric transmitting tube passes through the convex lens to turn irregular divergent light into uniform The parallel light passes through the tipping paper and then converges to the infrared photoelectric receiving tube for reception through the convex lens, as shown in Figure 3; this design controls the emission angle of the emission tube to achieve higher penetration performance.

Generally, a photoelectric sensor is a sensor that uses a photoelectric element as a detection element. It first converts the measured changes into changes in optical signals, and then further converts the optical signals into electrical signals with the help of photoelectric elements. Control is mainly achieved by converting changes in light intensity into changes in electrical signals. The transmitter aims at the target and emits a beam. The emitted beam generally comes from a semiconductor light source, a light-emitting diode (LED), a laser diode and an infrared emitting diode. The beam is emitted without interruption, or with varying pulse widths. The receiver consists of photodiodes, phototransistors and photovoltaic cells. In front of the receiver, optical components such as lenses and apertures are installed. Behind it is the detection circuit, which filters out the valid signal and applies it.

When testing, the tipping paper is unfolded under the driving of rollers to wrap the cigarettes and filters. The infrared light emitted by the infrared photoelectric emission tube passes through the convex lens to change the irregular divergent light into uniform parallel light. After passing through the tipping paper, it is collected by the infrared photoelectric receiving tube through the convex lens for reception; the infrared photoelectric detector 8 converts the changes in light intensity into changes in electrical signals, and then sends the collected information to the central processing unit through the signal isolation unit. , the signal isolation unit can isolate interference signals and ensure signal accuracy.

The central processing unit performs analysis and judgment processing. The central processing unit uses a 16-bit microprocessor. The infrared photoelectric detector 8 samples the tipping paper data once every 1 millisecond. The microprocessor takes the sampled data and takes 20 samples. The average value is used as the benchmark, the benchmark is dynamically corrected in real time, and then a set value is artificially set based on the benchmark value (the set value is a limit value for judging tipping paper joints, for example, if the set value is 500 microns, then the micron The processor determines that when the thickness of the tipping paper is greater than 500 microns, it is the joint part of the tipping paper, and when the thickness of the tipping paper is less than 500 microns, it is the non-joint part of the tipping paper). A certain value can be input through input button 3 for the set value. and displayed on display 2. Since the infrared photoelectric detector 8 detects tipping paper in real time, during normal detection, the infrared photoelectric detector 8 compares the current actual measured value with the set value. When the actual measured value is greater than or equal to the set value, the micro The processor determines that the tipping paper at this time is the joint part. When the actual measured value is less than the set value, the microprocessor determines that the tipping paper at this time is the non-joint part, and then sends it to the shadow register, and then through the shift The register is shifted, which is the paper joint signal, and the corresponding elimination action is performed according to the paper joint signal. At the same time, the detection information is displayed on the display screen 2 to facilitate the inspection by the inspector. After that, the judgment information is converted through the digital-to-analog conversion unit and converted into analog quantity, and then transmitted from the output terminal 4 to other related mechanisms of the cigarette machine through the transmitting transistor to perform corresponding actions. Through this design, tipping paper joints of various colors and thicknesses can be effectively detected. At the same time, it has an LCD screen 2 to display information such as detection status and statistical data. The circuit has input overvoltage, reverse polarity and short circuit protection, and output Short circuit, overcurrent protection, etc.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently substituted; however, these modifications or substitutions do not cause the essence of the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (3)

1. A new type of cigarette machine tipping paper joint detection device, which is characterized by: including an infrared photoelectric detection head and a control box. The control box includes a box body. The front of the box body is provided with a display screen and input buttons. The box body There are detection head terminals and output terminals on the box. There is a control circuit board inside the box. The infrared photoelectric detection head is connected to the detection head terminal of the control box. The infrared photoelectric detection head includes an infrared photoelectric emission tube and an infrared photoelectric receiving tube. The infrared photoelectric detection head The transmitting tube and the infrared photoelectric receiving tube are installed oppositely, and the tipping paper passes between the infrared photoelectric transmitting tube and the infrared photoelectric receiving tube; the lenses of the infrared photoelectric transmitting tube and the infrared photoelectric receiving tube adopt convex lenses, and the infrared photoelectric transmitting tube The emission frequency of the tube emission is 800KHz; The control circuit board includes a central processing unit, a signal isolation unit, a display unit, a key unit, a digital-to-analog conversion unit, a transmitting transistor and a power conversion unit. The first output end of the power conversion unit is connected to an infrared photoelectric detector, and the power conversion unit The second output end is connected to the display unit, the signal output end of the infrared photoelectric detector is connected to the collection signal receiving end of the central processing unit through the signal isolation unit, the communication end of the central processing unit is connected to the button unit, and the display end of the central processing unit is connected to the display unit , the signal output end of the central processing unit is connected to the digital-to-analog conversion unit, the display unit is connected to the digital-to-analog conversion unit, the digital-to-analog conversion unit is connected to the emission transistor, the output end of the emission transistor is connected to the output terminal, and the output terminal is used to connect to the cigarette machine. 2. The new cigarette machine tipping paper joint detection device according to claim 1, characterized in that: the box body is square, the detection head terminal is located on the right side of the box body, and the output terminal is located on the box body. of the left side. 3. The new cigarette machine tipping paper joint detection device according to claim 2, characterized in that: the front of the box is provided with a joint indicator light and a power indicator light.