Cigarette carton packet missing identifying and removing device of carton sealing machine

Abstract

The utility model discloses a carton sealing machine cigarette carton packet missing identification and rejection device which comprises a support installed above a carton cigarette output channel of a carton sealing machine, two rows of photoelectric sensors are arranged on the support, each row comprises five photoelectric sensors, the arrangement direction of the two rows of photoelectric sensors is perpendicular to the conveying direction of the carton cigarette output channel, and the two rows of photoelectric sensors are arranged in a staggered mode. The detection direction is vertically downward; a removing device used for removing cigarette cartons lack of packages is installed on the cigarette carton output channel on the downstream of the support, a controller is arranged on one side of the cigarette carton output channel, and the controller is electrically connected with the ten photoelectric sensors and the removing device. According to the utility model, every two photoelectric sensors detect the diagonal position of one cigarette packet, and when the cigarette packet lacks, even if the cigarette packet beside the packet lacking position rotates in direction and shakes, the cigarette packet cannot cover the detection range of all the photoelectric sensors no matter what angle the cigarette packet is located. The first photoelectric sensor and the second photoelectric sensor can accurately detect whether the cigarette carton is lack of packets, and the detection precision is high.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco and cigarette packaging equipment, in particular to a cigarette strip missing pack identification and rejection device for a carton sealing machine. Background Art

[0002] With the rapid development of the tobacco industry, high speed has become the constant pursuit of tobacco processing equipment. The carton sealing machine is the last equipment to complete the tobacco production and manufacturing process. The stability of the equipment has a great impact on the control of product quality.

[0003] Cigarette packaging equipment is operating at increasingly high speeds. In actual production operations, major cigarette companies are experiencing varying degrees of missing packs when packaging cigarettes into cartons. During production, it was discovered that before the cigarette packs are packaged in cartons, the right pack-collating mechanism arranges 10 packs into two stacked rows. A push rod then pushes the packs from the side to the folding mechanism of the cartons' label paper. During this process, if a pack is missing from the lower layer, the upper pack will fall to the location where the pack is missing. With the upper pack missing, it is impossible to replace the missing pack. Once these missing packs enter the market, they harm consumers and negatively impact the company's image. Traditional cigarette companies rarely install missing pack detection devices in the carton sealing machine, the final checkpoint before products leave the factory. This compromises product quality, significantly impacts the company's image, and poses a quality and safety risk.

[0004] In the existing cigarette strip missing pack identification device, the Chinese utility model patent with application number CN201921991745.3 discloses a composite missing pack detection device, including an upper cover plate, a lower cover plate, a vacuum generator, a left plate, and a right plate, wherein a plurality of photoelectric sensors A and a plurality of photoelectric sensors B are fixedly installed on the upper cover plate and the lower cover plate respectively. Photoelectric sensors A and B perform one-to-one linear detection on the presence of cigarette packs. If a missing pack occurs, no matter where the missing pack is located and how the cigarette packs next to the missing pack location are placed, they will be detected by photoelectric sensors A and B, and then a secondary detection will be performed under the action of the vacuum generator. The device also has the following defects for packaged cigarette strips: 1. The device is used before the label paper of the strip box is folded, and the cigarette packs are not loaded into the strip box. The lower cover plate is a fixed plate, and the cigarette packs need to be pushed by a push rod to enter. The device is not suitable for the fast conveying channel between the packaging machine and the carton sealing machine; 2. The one-to-one detection of the photoelectric sensor has Figure 6 The defect shown is that when a cigarette rod is missing a pack, if the cigarette pack next to the missing pack rotates during transportation and the cigarette pack blocks the two photoelectric sensors horizontally, the photoelectric sensors may detect the missing pack as a qualified cigarette rod, thereby allowing the missing pack of cigarette rods to flow into the market, damaging the interests of consumers and adversely affecting the image of the cigarette company. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a cigarette pack missing identification and rejection device for a carton sealing machine which can accurately detect missing cigarette packs.

[0006] The utility model is achieved through the following technical solutions:

[0007] A cigarette pack missing identification and rejection device for a carton sealing machine, installed at the cigarette pack output channel 6 of the carton sealing machine, comprising:

[0008] The upper bracket 1 is arranged above the cigarette output channel 6 and is used to fix the first photoelectric sensor 2;

[0009] Ten first photoelectric sensors 2 are arranged in two rows on the upper bracket 1, with five sensors in each row. The arrangement direction of the two rows of first photoelectric sensors 2 is perpendicular to the conveying direction of the cigarette output channel 6, and the two rows of first photoelectric sensors 2 are staggered, with the detection direction vertically downward;

[0010] The rejecting device 3 is installed on the cigarette output channel 6 downstream of the upper support 1 and is used to reject the missing cigarette rods 5;

[0011] The controller 4 is arranged on one side of the cigarette output channel 6 and is electrically connected to the ten first photoelectric sensors 2 and the rejecting device 3 .

[0012] Furthermore, the upper bracket 1 includes a first bracket 11 and a second bracket 12. The first bracket 11 and the second bracket 12 have the same structure and both include:

[0013] Two support plates 111, the bottoms of which are respectively fixed to both sides of the cigarette delivery channel 6 by bolts, and the tops of which extend to the height of the delivery surface of the cigarette delivery channel 6;

[0014] The mounting plate 112 is mounted on the two support plates 111 at both ends, and five first photoelectric sensors 2 are arranged equidistantly on the mounting plate 112 .

[0015] Furthermore, the support plate 111 is an inverted "L"-shaped structure, and two first waist-shaped grooves 113 are vertically provided below the vertical plate of the support plate 111. The support plate 111 is connected to the mounting holes of the side plates of the cigarette output channel 6 by bolts passing through the waist-shaped grooves;

[0016] Two threaded holes 114 are provided on the transverse plate of the support plate 111, and two second waist-shaped grooves 115 are provided on both sides of the mounting plate 112. The two ends of the mounting plate 112 are connected to the threaded holes 114 on the support plate 111 by bolts passing through the second waist-shaped grooves 115.

[0017] Furthermore, the offset distance between the two rows of first photoelectric sensors 2 is less than the width of the cigarette pack 51 and is not less than two-thirds of the width of the cigarette pack 51;

[0018] The distance between the two rows of first photoelectric sensors 2 is smaller than the length of the cigarette pack 51 and is not less than two-thirds of the length of the cigarette pack 51 .

[0019] Furthermore, cigarette rod guide rods 61 are provided on both sides of the cigarette rod output channel 6 , and the distance between the two cigarette rod guide rods 61 is adapted to the length of the cigarette rod 5 .

[0020] Furthermore, the rejection device 3 includes a second mounting plate 31 and an ejector 32. The bottom of the second mounting plate 31 is installed on one side of the cigarette output channel 6, and the top of the second mounting plate 31 extends out to the height of the conveying surface of the cigarette output channel 6. The tail of the ejector 32 is installed on the top of the second mounting plate 31, and the ejector 32 is perpendicular to the conveying direction of the cigarette output channel 6.

[0021] Furthermore, the ejector 32 is a hydraulic cylinder or a pneumatic cylinder, and a push plate 33 is provided at the front end of the telescopic rod of the hydraulic cylinder or the cylinder. The bottom height of the push plate 33 is higher than the height of the tobacco rod guide rod 61 and does not exceed the height of the tobacco rod 5.

[0022] Furthermore, the arrangement spacing of the first photoelectric sensors 2 is adapted to the width of the cigarette pack 51 .

[0023] Furthermore, a lower bracket 7 is provided below the cigarette output channel 6. The lower bracket 7 has the same structural components as the upper bracket 1 and is invertedly installed below the cigarette output channel 6.

[0024] Two rows of second photoelectric sensors 8 are provided on the lower bracket 7 . The arrangement of the two rows of second photoelectric sensors 8 is the same as that of the ten first photoelectric sensors 2 . The detection direction of the second photoelectric sensors 8 is vertically upward.

[0025] Furthermore, the conveyor belt 62 of the cigarette output channel 6 is arranged with several rows of hollow areas, each row of hollow areas is provided with several strip-shaped hollow holes 63, and when each row of hollow areas passes directly above the lower bracket 7, the several strip-shaped hollow holes 63 in the hollow area correspond to the detection positions of the two rows of second photoelectric sensors 8;

[0026] A plurality of detection holes 65 are provided on the belt support plate 64 below the conveyor belt 62 . The positions of the detection holes 65 correspond to the detection positions of the two rows of second photoelectric sensors 8 .

[0027] The working principle of this utility model:

[0028] The utility model locates the position of the cigarette strip 5 by the cigarette guide rods 61 on both sides of the cigarette output channel 6, and supports and fixes the first photoelectric sensor 2 and the second photoelectric sensor 8 by the upper bracket 1 installed above the cigarette output channel 6 and the lower bracket 7 installed below the cigarette output channel 6. The upper bracket 1 and the lower bracket 7 have the same structure, and both adjust the detection height by the first waist-shaped groove 113 on the support plate 111, and adjust the lateral detection position by the second waist-shaped groove 115 on the mounting plate 112; this device detects the upper layer of cigarette packs 51 in the cigarette strip 5 by 10 first photoelectric sensors 2, and detects the lower layer of cigarette packs 51 in the cigarette strip 5 by 10 second photoelectric sensors 8. Every two first photoelectric sensors 2 detect the diagonal position of an upper layer of cigarette packs 51, and every two second photoelectric sensors 8 detect the diagonal position of a lower layer of cigarette packs 51.

[0029] The first and second photoelectric sensors 2 and 8 are sensors with a single transmitter and receiver. The transmitter emits an infrared beam signal. The infrared light sequentially penetrates the non-metallic plastic seal of the cigarette rod 5, the label paper of the cigarette box 5, and the label paper of the cigarette pack 51. The infrared light is then reflected by the metallic aluminum foil paper used to wrap the cigarettes. The infrared beam signal reflected by the aluminum foil is received by the receivers of the first and second photoelectric sensors 2 and 8, converted into an electrical signal, and transmitted to the controller 4. The controller 4 determines whether the cigarette rod 5 is missing a pack based on the signals fed back by the first and second photoelectric sensors 2 and 8.

[0030] During the transportation of the cigarette rod 5 in the cigarette output channel 6, when one of the first photoelectric sensors 2 is triggered by the cigarette pack 51, the other nine first photoelectric sensors 2 must sense the cigarette pack 51 at the same time within the time when the first photoelectric sensor 2 is triggered by the cigarette pack 51, that is, ten first photoelectric sensors 2 must be triggered by the cigarette pack 51 at the same time, and the controller 4 determines that there is no missing pack in the cigarette rod 5, otherwise it is determined that there is a missing pack in the cigarette rod 5; the detection method of the ten second photoelectric sensors 8 on the lower bracket 7 is similar. When one of the second photoelectric sensors 8 is triggered by the cigarette pack 51, the other nine second photoelectric sensors 8 must sense the cigarette pack 51 at the same time within the time when the second photoelectric sensor 8 is triggered by the cigarette pack 51, that is, ten second photoelectric sensors 8 must be triggered by the cigarette pack 51 at the same time, and the controller 4 determines that there is no missing pack in the cigarette rod 5, otherwise it is determined that there is a missing pack in the cigarette rod 5; when the controller 4 determines that there is a missing pack in the cigarette rod 5, the controller 4 controls the ejector 32 on the rejection device 3 to push out the missing pack cigarette rod 5 quickly from the side of the cigarette output channel 6, and reject the missing pack cigarette rod 5.

[0031] Compared with the prior art, the present invention has the following advantages:

[0032] In the present invention, every two photoelectric sensors detect the diagonal position of a cigarette pack 51. When a cigarette strip 5 is missing a pack, the cigarette pack 51 cannot cover the detection range of the photoelectric sensor. Even if the cigarette pack 51 next to the missing pack position rotates or shakes, the cigarette pack 51 cannot cover the detection range of the entire photoelectric sensor no matter what angle it is at. The first photoelectric sensor 2 and the second photoelectric sensor 8 can accurately detect whether the cigarette strip 5 is missing a pack, with high detection accuracy, high stability and anti-interference ability; when a cigarette strip 5 is missing a pack, the rejection device 3 can automatically reject the missing pack of the cigarette strip 5, which is convenient for the operator to discover the problem in time, fundamentally solve the problem of missing packs of the cigarette strip 5, and ensure the quality of the finished product of the cigarette strip 5.

[0033] The support plate 111 and the mounting plate 112 of the utility model have stable structures, are convenient for small-batch processing, and have low production costs; the detection height of the sensor can be adjusted by the first waist-shaped groove 113 on the support plate 111, and the lateral detection position of the sensor can be adjusted by the second waist-shaped groove 115 on the mounting plate 112, and the position adjustment of the first photoelectric sensor 2 and the second photoelectric sensor 8 is convenient and quick.

[0034] The utility model positions the tobacco rod 5 by the tobacco rod guide rods 61 on both sides of the cigarette output channel 6, thereby reducing the lateral position error of the tobacco rod 5 on the cigarette output channel 6 and ensuring the detection accuracy of the first photoelectric sensor 2 and the second photoelectric sensor 8. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a three-dimensional diagram of the use state of Example 1 of the utility model;

[0036] Figure 2 This is an exploded view of the bracket, the rejecting device and the cigarette output channel of Example 1 of the present utility model;

[0037] Figure 3 This is an exploded view of the bracket and photoelectric sensor of Example 1 of the present utility model;

[0038] Figure 4 A perspective view of the use state of Example 1 of the utility model;

[0039] Figure 5 This is a schematic diagram of the test points of the photoelectric sensor and the cigarette pack of the utility model;

[0040] Figure 6 This is a schematic diagram of sensor test points in the prior art;

[0041] Figure 7 This is a schematic diagram of the three-dimensional structure of Example 2 of the present utility model;

[0042] Figure 8 This is a side view of Example 2 of the present utility model;

[0043] Figure 9 For this utility model Figure 8 Section view at AA in the middle.

[0044] Numbers in the figure:

[0045] 1-upper bracket, 11-first bracket, 111-support plate, 112-mounting plate, 113-first waist-shaped groove, 114-threaded hole, 115-second waist-shaped groove, 12-second bracket;

[0046] 2- first photoelectric sensor;

[0047] 3-rejection device, 31-second mounting plate, 32-ejector, 33-push plate;

[0048] 4-Controller;

[0049] 5-cigarette strip, 51-cigarette pack;

[0050] 6- cigarette output channel, 61- cigarette guide rod, 62- conveyor belt, 63- strip hollow hole, 64- belt support plate, 65- detection hole;

[0051] 7-lower bracket;

[0052] 8- Second photoelectric sensor. DETAILED DESCRIPTION

[0053] In order to enable those skilled in the art to better understand the technical solution of the present invention, its specific implementation methods are described in detail below with reference to the accompanying drawings.

[0054] Example 1:

[0055] like Figure 1-5 As shown, a cigarette pack missing identification and rejection device for a carton sealing machine includes an upper bracket 1, 10 first photoelectric sensors 2, a rejection device 3 and a controller 4. The upper bracket 1 is installed above the cigarette output channel 6. The 10 first photoelectric sensors 2 are divided into two groups and arranged on the upper bracket 1, and the two rows of first photoelectric sensors 2 are staggered; the rejection device 3 is installed on the cigarette output channel 6 downstream of the upper bracket 1, and the controller 4 is installed on one side of the cigarette output channel 6. The controller 4 is electrically connected to the 10 first photoelectric sensors 2 and the rejection device 3.

[0056] In an embodiment, Figure 5As shown, one support plate 111 of the first and second brackets 11, 12 is bolted to the left side of the cigarette output channel 6, and the other support plate 111 is bolted to the right side of the cigarette output channel 6. The ends of the mounting plate 112 are bolted through the second waist-shaped grooves 115 and fixed to the threaded holes 114 of the two corresponding support plates 111. The ends of the support plate 2 are bolted to the connecting plates 1 and 3 respectively. The controller is bolted to the carton sealer, and the rejection device is installed on one side of the carton sealer.

[0057] In an embodiment, Figure 5 As shown, photoelectric sensors A, C, E, G, and I are sequentially mounted on the mounting plate 112 of the first bracket 11, and photoelectric sensors B, D, F, H, and J are sequentially mounted on the mounting plate 112 of the second bracket 12. Photoelectric sensors A and B detect the first cigarette pack 51, photoelectric sensors C and D detect the second cigarette pack 51, photoelectric sensors E and F detect the third cigarette pack 51, photoelectric sensors G and H detect the fourth cigarette pack 51, and photoelectric sensors I and J detect the fifth cigarette pack 51. The spacing between photoelectric sensors in the same row is the width of the cigarette pack.

[0058] In an embodiment, Figure 2 、 3 As shown, the support plate 111 has two first waist-shaped grooves 113 for adjusting its vertical mounting position, thereby adjusting the height of the two rows of first photoelectric sensors 2. The mounting plate 112 has two second waist-shaped grooves 115 for adjusting its horizontal mounting position, thereby adjusting the horizontal position detected by the two rows of first photoelectric sensors 2. The support plate 111 and mounting plate 112 have a stable structure, simple processing, and low production cost.

[0059] In an embodiment, Figure 5 As shown, the offset distance b between the two rows of first photoelectric sensors 2 is 35-45 mm, and the spacing a between the two rows of first photoelectric sensors 2 is 60-80 mm.

[0060] In an embodiment, Figure 1 、 2 As shown, the rejection device 3 is used to reject the cigarette rods 5 with missing packs. When the 10 first photoelectric sensors 2 are not triggered at the same time, the controller 4 determines that the cigarette rod 5 is missing a pack. When the cigarette rod 5 is transmitted to the workstation of the rejection device 3, the controller 4 controls the ejector 32 to extend, and the push plate 33 at the front end of the ejector 32 pushes the missing cigarette rod 5 from the side of the cigarette output channel 6, so that the missing cigarette rod 5 will not flow into the carton sealing machine.

[0061] In an embodiment, Figure 1 、 2As shown in Figures 4 and 5, the tobacco rod guide rods 61 on either side of the cigarette output channel 6 are used to locate the position of the tobacco rod 5, preventing the deviation between the position of the tobacco rod 5 and the detection position of the first photoelectric sensor 2 from exceeding the detection range of the photoelectric sensor, thereby preventing the controller 4 from misjudging the qualified tobacco rod 5 as a missing pack tobacco rod 5 and controlling the rejection device 3 to reject it. The front ends of the tobacco rod guide rods 61 on either side of the cigarette output channel 6 are close to the guide rods on the end conveyor belt of the cigarette packaging machine, and the distance between the front ends of the two tobacco rod guide rods 61 is slightly larger than the distance between the guide rods on both sides of the end conveyor belt of the cigarette packaging machine. This prevents the tobacco rod 5 from getting stuck when the tobacco rod guide rods 61 transition between the two conveyor belts, causing damage to the appearance of the tobacco rod 5. The tobacco rod guide rods 61 are cylindrical in structure, with a small contact surface with the ends of the tobacco rod 5, thereby reducing the friction between the tobacco rod 5 and the tobacco rod guide rods 61. The distance between the two tobacco rod guide rods 61 is greater than 2-10 mm of the length of the tobacco rod 5.

[0062] Photoelectric sensors can detect metal objects even when they are separated by non-metallic materials. This detection capability is due to the principle and working method of photoelectric sensors. Photoelectric sensors emit a light beam onto the surface of an object, then receive the reflected light signal and convert it into an electrical signal to form an output signal. This detection method is not affected by whether the metal object is separated by non-metallic materials and can therefore be used to detect metal objects surrounded or separated by non-metallic materials. Specifically, when it comes to the detection of non-metallic materials, photoelectric sensors are also capable of detecting non-metallic objects due to their wide applicability and flexibility. For example, diffuse reflection photoelectric sensors, such as the model G1-A100N diffuse reflection photoelectric sensor, have a wide range of applications and can be applied to various situations requiring non-contact detection. Whether detecting metal or non-metallic objects, they can provide high-precision and high-efficiency detection services.

[0063] In an embodiment, the ejector 32 is a hydraulic cylinder or a pneumatic cylinder, and a push plate 33 is provided at the front end of the telescopic rod of the hydraulic cylinder or the cylinder. The bottom height of the push plate 33 is higher than the height of the tobacco rod guide rod 61 and does not exceed the height of the tobacco rod 5, so as to prevent the tobacco rod guide rod 61 from hindering the push plate 33 from being pushed out.

[0064] Example 2:

[0065] like Figure 7-9 As shown, compared with Example 1, a lower bracket 7 is further provided below the cigarette output channel 6 in Example 2. The lower bracket 7 has the same structural components as the upper bracket 1 and is installed upside down below the cigarette output channel 6.

[0066] In an embodiment, Figure 8 、 9As shown, the 10 second photoelectric sensors 8 and the 10 first photoelectric sensors 2 on the lower bracket 7 have the same arrangement and size, the detection direction of the second photoelectric sensors 8 is vertically upward, and the 10 second photoelectric sensors 8 and the 10 first photoelectric sensors 2 are staggered in the conveying direction of the conveyor belt 62 to prevent the first photoelectric sensors 2 and the second photoelectric sensors 8 from interfering with each other.

[0067] In an embodiment, Figure 9 As shown, the conveyor belt 62 of the cigarette output channel 6 is arranged with several rows of hollow areas. The conveying rate of the cigarette output channel 6 is the same as the conveying rate of the conveyor belt at the end of the cigarette packaging machine. The arrangement size of the hollow areas is adapted to the discharge interval at the end of the cigarette packaging machine. The length of the strip-shaped hollow hole 63 is more than twice the width of the cigarette strip 5.

[0068] In an embodiment, Figure 9 As shown, the positions of the strip-shaped hollow holes 63 on the conveyor belt 62 of the cigarette output channel 6 and the detection holes 65 on the belt support plate 64 correspond to the detection positions of the two rows of second photoelectric sensors 8. The strip-shaped hollow holes 63 and the detection holes 65 are used to provide an unobstructed path for the detection light of the second photoelectric sensor 8, reduce the obstruction to the second photoelectric sensor 8 sending and receiving signals, and improve the detection accuracy.

[0069] In the embodiment, the model of the first photoelectric sensor 2 and the second photoelectric sensor 8 is SICK VL 18-4P3240, which has high detection accuracy, strong reliability, fast response speed, high stability and anti-interference ability, ensuring that the missing packs of cigarette rods can be quickly and accurately identified and rejected when passing through the rejection device.

[0070] In the embodiment, the controller 4 uses a PLC to control the first photoelectric sensor 2 , the second photoelectric sensor 8 and the ejector 32 .

[0071] Working mode of this utility model:

[0072] When installing this device:

[0073] Step 1: Install the four support plates 111 of the first bracket 11 and the second bracket 12 into the mounting holes on both sides of the cigarette output channel 6 by means of bolts, and adjust the heights of the four support plates 111 so that the horizontal plate heights of the four support plates 111 are consistent.

[0074] Step 2: Pass the mounting plates 112 of the first bracket 11 and the second bracket 12 through the second waist-shaped grooves 115 on both sides through bolts, and install them on the horizontal plates of the two supporting plates 111 opposite to each other on both sides of the cigarette output channel 6. Install 10 first photoelectric sensors 2 on the two supporting plates 111, and adjust the horizontal positions of the two mounting plates 112 so that the detection positions of the 10 first photoelectric sensors 2 correspond to one upper cigarette pack 51 in pairs.

[0075] Step 3: Install the second mounting plate 31 of the rejection device 3 into the mounting screw hole on the side of the downstream cigarette output channel 6 of the upper bracket 1, then install the ejector 32 on the transverse plate of the second mounting plate 31, and then adjust the installation height of the second mounting plate 31 so that the bottom height of the push plate 33 is higher than the height of the cigarette guide rod 61 and does not exceed the height of the cigarette rod 5.

[0076] The installation method of the lower bracket 7 and the second photoelectric sensor 8 is similar to the installation method of the upper bracket 1 and the first photoelectric sensor 2, as described in steps 1-2.

[0077] When using this device:

[0078] After the tobacco rod 5 is conveyed by the conveyor belt at the end of the cigarette packaging machine to the cigarette output channel 6, the ends of the tobacco rod 5 are limited and guided by the tobacco rod guide rods 61. During the process of conveying the tobacco rod 5 to the bottom of the upper support 1, when one of the first photoelectric sensors 2 is triggered by the cigarette pack 51, the other nine first photoelectric sensors 2 must simultaneously sense the cigarette pack 51 within the time when the first photoelectric sensor 2 is triggered by the cigarette pack 51, that is, ten first photoelectric sensors 2 must be triggered by the cigarette pack 51 at the same time, and the controller 4 will determine that the tobacco rod 5 has no missing packs. Otherwise, it will be determined that the tobacco rod 5 has missing packs. When the controller 4 determines that the tobacco rod 5 has missing packs, the controller 4 pushes out the ejector 32 on the rejection device 3, so that the push plate 33 contacts the end of the missing pack of the tobacco rod 5 and quickly pushes the missing pack of the tobacco rod 5 out of the side of the cigarette output channel 6. The ejector 32 then quickly retracts its telescopic rod to complete the rejection of the missing pack of the tobacco rod 5.

[0079] The detection method of the ten second photoelectric sensors 8 on the lower support 7 is the same as the detection method of the ten first photoelectric sensors 2. During the process of conveying the tobacco rod 5 to the upper portion of the lower support 7, when one of the second photoelectric sensors 8 is triggered by a cigarette pack 51, the other nine second photoelectric sensors 8 must simultaneously sense the cigarette pack 51 within the time it is triggered. That is, all ten second photoelectric sensors 8 must be triggered simultaneously by the cigarette pack 51 before the controller 4 determines that the tobacco rod 5 has a complete pack. Otherwise, it determines that the tobacco rod 5 has a pack missing. When the controller 4 determines that the tobacco rod 5 has a pack missing, the controller 4 pushes out the ejector 32 on the rejection device 3, causing the push plate 33 to contact the end of the missing tobacco rod 5 and quickly push the missing tobacco rod 5 out from the side of the cigarette output channel 6. The ejector 32 then quickly retracts its telescopic rod, completing the rejection of the missing tobacco rod 5.

[0080] It should be noted that the above detailed introduction to the technical solution of the present invention and the description of the principles of the present invention are intended only to help understand the core concept of the present invention. It should be noted that those skilled in the art can improve and modify the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0081] Those skilled in the art of the present invention may modify or supplement the specific embodiments described, or adopt similar methods to replace them, as long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, and all such modifications and additions are within the scope of protection of the present invention. Therefore, the scope of protection of this utility model patent shall be based on the appended claims.

Claims

1. A cigarette pack missing identification and rejection device for a carton sealing machine, installed at the cigarette pack output channel (6) of the carton sealing machine, characterized in that: include: An upper bracket (1) is arranged above the cigarette output channel (6) and is used to fix the first photoelectric sensor (2); Ten first photoelectric sensors (2) are arranged in two rows on the upper bracket (1), with five sensors in each row. The arrangement direction of the two rows of first photoelectric sensors (2) is perpendicular to the conveying direction of the cigarette output channel (6), and the two rows of first photoelectric sensors (2) are staggered, with the detection direction being vertically downward. A rejecting device (3) is installed on the cigarette output channel (6) downstream of the upper support (1) and is used to reject missing cigarette rods (5); The controller (4) is arranged on one side of the cigarette output channel (6) and is electrically connected to the ten first photoelectric sensors (2) and the rejecting device (3).

2. The cigarette pack missing identification and rejection device for a carton sealing machine according to claim 1, characterized in that: The upper bracket (1) comprises a first bracket (11) and a second bracket (12). The first bracket (11) and the second bracket (12) have the same structure and both comprise: Two support plates (111), the bottoms of which are respectively mounted on both sides of the cigarette strip output channel (6) by bolts, and the tops of which extend out to the height of the conveying surface of the cigarette strip output channel (6); The mounting plate (112) has two ends mounted above the two support plates (111), and five first photoelectric sensors (2) are arranged at equal intervals on the mounting plate (112).

3. The cigarette pack missing identification and rejection device for a carton sealing machine according to claim 2, characterized in that: The support plate (111) is an inverted "L"-shaped structure, and two first waist-shaped grooves (113) are vertically arranged below the vertical plate of the support plate (111). The support plate (111) is connected to the mounting holes of the side plate of the cigarette output channel (6) by bolts passing through the waist-shaped grooves; Two threaded holes (114) are provided on the transverse plate of the support plate (111), two second waist-shaped grooves (115) are provided on both sides of the mounting plate (112), and both ends of the mounting plate (112) are connected to the threaded holes (114) on the support plate (111) by bolts passing through the second waist-shaped grooves (115).

4. The cigarette pack missing identification and rejection device for a carton sealing machine according to claim 1, characterized in that: The offset distance between the two rows of first photoelectric sensors (2) is less than the width of the cigarette pack (51) and not less than two-thirds of the width of the cigarette pack (51); The distance between the two rows of first photoelectric sensors (2) is less than the length of the cigarette pack (51) and is not less than two-thirds of the length of the cigarette pack (51).

5. The cigarette pack missing identification and rejection device for a carton sealing machine according to claim 1, characterized in that: Cigarette guide rods (61) are provided on both sides of the cigarette output channel (6), and the distance between the two cigarette guide rods (61) is adapted to the length of the cigarette rod (5).

6. The cigarette pack missing identification and rejection device for a carton sealing machine according to claim 5, characterized in that: The rejection device (3) includes a second mounting plate (31) and an ejector (32), the bottom of the second mounting plate (31) is mounted on one side of the cigarette output channel (6), the top of the second mounting plate (31) extends to the height of the conveying surface of the cigarette output channel (6), the tail of the ejector (32) is mounted on the top of the second mounting plate (31), and the ejector (32) is perpendicular to the conveying direction of the cigarette output channel (6).

7. The cigarette pack missing identification and rejection device for a carton sealing machine according to claim 6, characterized in that: The ejector (32) is a hydraulic cylinder or a pneumatic cylinder, and a push plate (33) is provided at the front end of the telescopic rod of the hydraulic cylinder or the pneumatic cylinder. The bottom height of the push plate (33) is higher than the height of the tobacco rod guide rod (61) and does not exceed the height of the tobacco rod (5).

8. The cigarette pack missing identification and rejection device for a carton sealing machine according to claim 1, characterized in that: The arrangement spacing of the first photoelectric sensors (2) is adapted to the width of the cigarette pack (51).

9. The cigarette pack missing identification and rejection device for a carton sealing machine according to claim 1, characterized in that: A lower bracket (7) is provided below the cigarette strip output channel (6). The lower bracket (7) has the same structural components as the upper bracket (1). The lower bracket (7) is installed upside down below the cigarette strip output channel (6). Two rows of second photoelectric sensors (8) are provided on the lower bracket (7), and the arrangement of the two rows of second photoelectric sensors (8) is the same as the arrangement of the ten first photoelectric sensors (2), and the detection direction of the second photoelectric sensors (8) is vertically upward.

10. The cigarette pack missing identification and rejection device for a carton sealing machine according to claim 9, characterized in that: The conveyor belt (62) of the cigarette output channel (6) is arranged with several rows of hollow areas, each row of hollow areas is provided with several strip-shaped hollow holes (63), and when each row of hollow areas passes directly above the lower bracket (7), the several strip-shaped hollow holes (63) in the hollow areas correspond to the detection positions of the two rows of second photoelectric sensors (8); A plurality of detection holes (65) are provided on the belt support plate (64) below the conveyor belt (62), and the positions of the plurality of detection holes (65) correspond to the detection positions of the two rows of second photoelectric sensors (8).

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