Negative pressure stable packaging material joint double-sided detection device and method for cigarette packaging machine

Abstract

A negative pressure stable packaging material joint double-sided detection device and method for a cigarette packaging machine, the device: a negative pressure guide plate is fixed below the paper jam conveying path, has a cavity inside, and has a plurality of negative pressure holes on its surface; an optical fiber detector is installed at the center of the negative pressure guide plate; a color detector is fixed above the paper jam conveying path; a pair of left-side paper receiving rollers and a pair of right-side paper receiving rollers are respectively arranged on the left and right sides of the negative pressure guide plate. Method: the negative pressure guide plate has negative pressure; the splicing joint is detected by the optical fiber detector and the color detector; after any detector of the packaging machine control system receives the detection signal, 4 paper jams are controlled to be removed; and the cigarette packs corresponding to the 4 paper jams are controlled. The device can effectively reduce the fluctuation amplitude of the paper jam during transportation, ensure the stability of the detection signal, and avoid missed detection and false detection; the method has simple steps, can efficiently and accurately detect the splicing joint, and greatly reduce the probability of false detection.

Description

Technical Field

[0001] The invention belongs to the technical field of cigarette equipment, and in particular relates to a negative pressure stable packaging material joint double-sided detection device and method for a cigarette packaging machine. Background Art

[0002] At present, most of the paper jams in packaging machines have a white rough surface on the back and a gold or other color glossy surface on the front. The splice position is pasted on the front or back of the paper jam with black tape or other color tape. The traditional splice detection device mainly fixes a fiber optic detector on one side of the paper jam. The fiber optic detector transmits and receives the reflected light signal to detect the splice. However, since the paper jam has a large fluctuation during the transportation process, it cannot maintain a fixed distance with the fiber optic detector. When the splice passes through the fiber optic detector, the light signal received by the fiber optic detector is very unstable. The unstable detection signal is transmitted to the packaging machine control system, which may cause malfunction of the control system, and may remove both cigarette packs with and without splices.

[0003] At the same time, since only a single fiber optic detector is provided, the detection result is not very reliable and the detector often misses detection or makes false detections, which may cause cigarette packages with spliced ​​joints to flow into the market, bringing quality risks to the product and causing waste of materials. Summary of the invention

[0004] In view of the problems existing in the above-mentioned prior art, the present invention provides a negative pressure stable double-sided detection device and method for packaging material joints of a cigarette packaging machine. The device can effectively reduce the fluctuation amplitude of paper jams during transportation, ensure the stability of detection signals, and avoid missed detections and false detections. The method has simple steps and can efficiently and accurately detect splicing joints. At the same time, it greatly reduces the probability of false detection and ensures product quality.

[0005] The present invention provides a negative pressure stable packaging material joint double-sided detection device for a cigarette packaging machine, comprising an optical fiber detector, a negative pressure guide plate, a color detector, a pair of left paper pulling rollers and a pair of right paper pulling rollers;

[0006] The negative pressure guide plate is fixed below the paper jam conveying path and is arranged parallel to and close to the paper jam; the negative pressure guide plate has a cavity inside, and a plurality of negative pressure holes are arranged on the surface of the side close to the paper jam, and a negative pressure pipeline connected to the inner cavity is connected to the side away from the paper jam, and the negative pressure pipeline is connected to the negative pressure device to provide negative pressure for adsorbing the paper jam; a mounting hole is arranged in the center of the negative pressure guide plate and runs through the thickness direction;

[0007] The optical fiber detector is fixed in the mounting hole, with its sensing end facing the direction of the paper jam during transportation; the optical fiber detector is connected to the packaging machine control system, and is used to detect the splicing joint through an optical signal, and send a high-level signal A to the packaging machine control system when the splicing joint is detected;

[0008] The color detector is fixed above the paper jam conveying path and is arranged corresponding to the optical fiber detector, with its sensing end facing the direction of the paper jam during conveying; the color detector is connected to the packaging machine control system, and is used to detect the splicing joint through the color signal, and send a high level signal B to the packaging machine control system when the splicing joint is detected;

[0009] A pair of left-side receiving rollers are arranged on the left side of the negative pressure guide plate and are rotatably connected above and below the jammed paper conveying path, respectively, and a left-side passage for the jammed paper to pass through is formed between the pair of left-side receiving rollers;

[0010] A pair of right-side paper receiving rollers are arranged on the right side of the negative pressure guide plate and are located on the left side of the left-side paper jam roll and the right-side paper jam roll. The pair of right-side paper receiving rollers are rotatably connected above and below the paper jam conveying path, and a right-side passage for the paper jam to pass through is formed between the pair of right-side paper receiving rollers.

[0011] The packaging machine control system is used to remove paper jams at a paper jam removal station and remove cigarette packs at a cigarette pack removal station through a shift pulse in a control loop after receiving a high level signal A or a high level signal B.

[0012] Furthermore, in order to improve the accuracy of detection, the distance between the sensing end of the optical fiber detector and the paper jam in transportation is 5 mm; the distance between the sensing end of the color detector and the paper jam in transportation is 15 mm.

[0013] In the present invention, by setting the negative pressure guide plate, negative pressure can be provided to the paper jam, thereby effectively solving the problem of fluctuations in the paper jam conveying process, and at the same time, no scratches are caused to the glossy surface with characteristic colors on the front of the paper jam, effectively ensuring the stability of the detection signal of the paper jam splicing head when passing through the optical fiber detector. By setting a color detector corresponding to the optical fiber detector above the paper jam conveying path, the characteristic color of the front of the paper jam can be effectively detected, thereby effectively avoiding the occurrence of missed detection and false detection by dual cooperation with the optical fiber detector.

[0014] The present invention also provides a double-sided detection method for negative pressure stable packaging material joints of a cigarette packaging machine, comprising the following steps:

[0015] Step 1: Start the negative pressure device when the machine is running, so that the negative pressure guide plate has negative pressure, and adsorb the upper cardboard on the surface of the negative pressure adsorption plate for transmission. Stop the negative pressure device when the machine stops;

[0016] Step 2: Detect the splice by using an optical fiber detector, and send a high level signal A to the packaging machine control system when the splice is detected; detect the splice by using a color detector, and send a high level signal B to the packaging machine control system when the splice is detected;

[0017] Step 3: When the packaging machine control system receives the high-level signal A or the high-level signal B, the shift register of the paper jam is controlled to mark the section of the paper jam as a splicing joint, and then four pieces of paper jam are removed at the paper jam removal station through shift control;

[0018] Step 4: After removing the four jammed papers, the cigarette packs corresponding to the four jammed papers are marked as waste cigarette packs by controlling the shift register of the cigarette packs, and then the corresponding cigarette packs are removed at the cigarette pack removal station through mobile control.

[0019] Furthermore, in order to avoid waste of materials due to erroneous rejection when an abnormality occurs, in step three, when eight jammed papers are continuously rejected, the packaging machine control system controls the packaging machine to stop.

[0020] The present invention has simple steps and can efficiently and accurately detect splicing joints. At the same time, it greatly reduces the probability of false detection and ensures product quality. At the same time, it can directly control the equipment to stop when an abnormality occurs, avoiding material waste and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the process of the present invention.

[0023] In the figure: 1. left paper roll, 2. right paper roll, 3. negative pressure guide plate, 4. color detector, 5. optical fiber detector, 6. left paper pulling roller, 7. right paper pulling roller. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] like Figure 1 and Figure 2 As shown, a negative pressure stable packaging material joint double-sided detection device for a cigarette packaging machine includes an optical fiber detector 5, a negative pressure guide plate 3, a color detector 4, a pair of left paper pulling rollers 6 and a pair of right paper pulling rollers 7;

[0026] The negative pressure guide plate 3 is fixed below the paper jam conveying path and is arranged parallel to and close to the paper jam; the negative pressure guide plate 3 has a cavity inside, and a plurality of negative pressure holes are arranged on the surface of the side close to the paper jam, and a negative pressure pipeline connected to the inner cavity is connected to the side away from the paper jam, and the negative pressure pipeline is connected to the negative pressure device to provide negative pressure for adsorbing the paper jam; the center of the negative pressure guide plate 3 is provided with a mounting hole that runs through the thickness direction;

[0027] As a preferred embodiment, the size of the mounting hole is 8 mm, which is used to install the optical fiber detector 5 that matches the size.

[0028] The optical fiber detector 5 is fixed in the mounting hole, with its sensing end facing the direction of the paper jam during transportation; the optical fiber detector 5 is connected to the packaging machine control system, and is used to detect the splicing joint through an optical signal, and send a high-level signal A to the packaging machine control system when the splicing joint is detected;

[0029] The color detector 4 is fixed above the paper jam conveying path and is arranged corresponding to the optical fiber detector 5, with its sensing end facing the direction of the paper jam during conveying; the color detector 4 is connected to the packaging machine control system, and is used to detect the splicing joint through the color signal, and send a high level signal B to the packaging machine control system when the splicing joint is detected;

[0030] A pair of left-side receiving rollers are arranged on the left side of the negative pressure guide plate 3, and are rotatably connected above and below the jammed paper conveying path, respectively, and a left-side passage for the jammed paper to pass through is formed between the pair of left-side receiving rollers;

[0031] A pair of right-side paper receiving rollers are arranged on the right side of the negative pressure guide plate 3 and are located on the left side of the left-side paper jam roll 1 and the right-side paper jam roll 2. The pair of right-side paper receiving rollers are rotatably connected above and below the paper jam conveying path, and a right-side passage for the paper jam to pass through is formed between the pair of right-side paper receiving rollers.

[0032] The packaging machine control system is used to remove paper jams at a paper jam removal station and remove cigarette packs at a cigarette pack removal station through a shift pulse in a control loop after receiving a high level signal A or a high level signal B.

[0033] In order to improve the accuracy of detection, the distance between the sensing end of the optical fiber detector 5 and the paper jam in transportation is 5 mm; the distance between the sensing end of the color detector 4 and the paper jam in transportation is 15 mm.

[0034] By setting up the negative pressure guide plate, negative pressure can be provided to the paper jam, thereby effectively solving the problem of fluctuations in the paper jam conveying process. At the same time, no scratches will be caused to the glossy surface with characteristic colors on the front of the paper jam, effectively ensuring the stability of the detection signal of the paper jam joint when passing through the optical fiber detector. By setting up a color detector corresponding to the optical fiber detector above the paper jam conveying path, the characteristic color of the front of the paper jam can be effectively detected, thereby effectively avoiding missed detection and false detection by dual cooperation with the optical fiber detector.

[0035] The present invention also provides a double-sided detection method for negative pressure stable packaging material joints of a cigarette packaging machine, comprising the following steps:

[0036] Step 1: When the equipment is running, start the negative pressure device to make the negative pressure guide plate 3 have negative pressure, and adsorb the upper paper jam on the surface of the negative pressure adsorption plate for transmission. When the equipment is stopped, stop the negative pressure device;

[0037] Step 2: Detect the splice by the optical fiber detector 5, and send a high level signal A to the packaging machine control system when the splice is detected; detect the splice by the color detector 4, and send a high level signal B to the packaging machine control system when the splice is detected;

[0038] Step 3: When the packaging machine control system receives the high-level signal A or the high-level signal B, the shift register of the paper jam is controlled to mark the section of the paper jam as a splicing joint, and then four pieces of paper jam are removed at the paper jam removal station through shift control;

[0039] Step 4: After removing the four jammed papers, the cigarette packs corresponding to the four jammed papers are marked as waste cigarette packs by controlling the shift register of the cigarette packs, and then the corresponding cigarette packs are removed at the cigarette pack removal station through mobile control.

[0040] In order to avoid waste of materials due to erroneous rejection when an abnormality occurs, in step three, when eight jammed papers are continuously rejected, the packaging machine control system controls the packaging machine to stop.

[0041] The present invention has simple steps and can efficiently and accurately detect splicing joints. At the same time, it greatly reduces the probability of false detection and ensures product quality. At the same time, it can directly control the equipment to stop when an abnormality occurs, avoiding material waste and saving production costs.

Claims

1. A negative pressure stable packaging material joint double-sided detection device for a cigarette packaging machine, comprising an optical fiber detector (5), characterized in that: It also includes a negative pressure guide plate (3), a color detector (4), a pair of left-side paper pulling rollers (6) and a pair of right-side paper pulling rollers (7); The negative pressure guide plate (3) is fixed below the paper card conveying path and is arranged parallel to and close to the paper card; the negative pressure guide plate (3) has a cavity inside, and a plurality of negative pressure holes are arranged on the surface of the side close to the paper card, and a negative pressure pipeline connected to the inner cavity of the negative pressure guide plate (3) is connected to the side away from the paper card, and the negative pressure pipeline is connected to the negative pressure device to provide negative pressure for adsorbing the paper card; the center of the negative pressure guide plate (3) is provided with a mounting hole that runs through the thickness direction; The optical fiber detector (5) is fixed in the mounting hole, with its sensing end facing the direction of the paper jam during transportation; the optical fiber detector (5) is connected to the packaging machine control system, and is used to detect the splicing joint through an optical signal, and send a high-level signal A to the packaging machine control system when the splicing joint is detected; The color detector (4) is fixed above the paper jam conveying path and is arranged corresponding to the optical fiber detector (5), with its sensing end facing the direction of the paper jam during conveying; the color detector (4) is connected to the packaging machine control system and is used to detect the splicing joint through the color signal, and send a high level signal B to the packaging machine control system when the splicing joint is detected; A pair of left-side paper receiving rollers are arranged on the left side of the negative pressure guide plate (3) and are rotatably connected above and below the jammed paper conveying path, respectively, and a left-side passage for the jammed paper to pass through is formed between the pair of left-side paper receiving rollers; A pair of right-side paper receiving rollers are arranged on the right side of the negative pressure guide plate (3) and are located on the left side of the left-side paper roll (1) and the right-side paper roll (2). The pair of right-side paper receiving rollers are rotatably connected above and below the paper transport path, and a right-side passage for the paper to pass through is formed between the pair of right-side paper receiving rollers. The packaging machine control system is used to remove paper jams at a paper jam removal station and remove cigarette packs at a cigarette pack removal station through a shift pulse in a control loop after receiving a high level signal A or a high level signal B.

2. The negative pressure stable packaging material joint double-sided detection device for a cigarette packaging machine according to claim 1, characterized in that: The sensing end of the optical fiber detector (5) is 5 mm away from the paper jam during transportation; the sensing end of the color detector (4) is 15 mm away from the paper jam during transportation.

3. A double-sided detection method for negative pressure stabilized packaging material joints of a cigarette packaging machine, implemented by a double-sided detection device for negative pressure stabilized packaging material joints of a cigarette packaging machine as described in any one of claims 1-2, characterized in that: The following steps are involved: Step 1: when the equipment is running, the negative pressure device is started, so that the negative pressure guide plate (3) has negative pressure, and the cardboard above is adsorbed on the surface of the negative pressure adsorption plate for transmission, and the negative pressure device is stopped when the equipment is stopped; Step 2: Detect the splice by means of the optical fiber detector (5), and send a high level signal A to the control system of the packaging machine when the splice is detected; Detect the splice by means of the color detector (4), and send a high level signal B to the control system of the packaging machine when the splice is detected; Step 3: When the packaging machine control system receives the high-level signal A or the high-level signal B, the shift register of the paper jam is controlled to mark the section of the paper jam as a splicing joint, and then four pieces of paper jam are removed at the paper jam removal station through shift control; Step 4: After removing the four jammed papers, the cigarette packs corresponding to the four jammed papers are marked as waste cigarette packs by controlling the shift register of the cigarette packs, and then the corresponding cigarette packs are removed at the cigarette pack removal station through mobile control.

4. A double-sided detection method for negative pressure stable packaging material joints of a cigarette packaging machine according to claim 3, characterized in that: In step three, when eight jammed papers are removed, the packaging machine control system controls the packaging machine to stop.

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