Defect detection device for cigarette case printing
By combining a guide plate and a negative pressure box with a fan, the problems of cigarette box offset and warping during transmission are solved, ensuring the clarity of image acquisition and the accuracy of detection results, and achieving efficient detection of printing defects in cigarette boxes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-03-20
AI Technical Summary
In existing methods for detecting printing defects in cigarette boxes, the boxes are prone to shifting, warping, or flipping during transport, and surface impurities can affect image acquisition, leading to inaccurate detection results.
Using a guide plate and a negative pressure box in conjunction with the air holes on the conveyor belt, the cigarette box is adsorbed by negative pressure and kept flat. Combined with a fan blowing away impurities, a high-resolution CCD camera and a supplementary light are used to ensure clear image acquisition. The rejection mechanism removes defective products.
It effectively prevents cigarette boxes from shifting and warping during high-speed transmission, removes surface impurities, and ensures the accuracy of image acquisition and the reliability of detection results.
Smart Images
Figure CN224019685U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of cigarette box detection, in particular to a defect detection device for cigarette box printing. BACKGROUND
[0002] The cigarette box refers to a box for containing cigarettes, the size of the cigarette box is generally common, the material of the cigarette box is various, and paper is commonly used, the cigarette box needs to be printed with trademarks and patterns during processing, and the printing quality of the cigarette box directly affects the product image and market competitiveness, therefore, the cigarette box needs to be subjected to defect detection after printing, and defective products are removed.
[0003] When the existing cigarette box is subjected to defect detection, the paperboard that has been printed and has not been folded into a box is placed on a conveying belt, an industrial camera is arranged on the conveying frame to collect patterns, and an image processing module is used to process and analyze the collected images, and defects are recognized, but there are certain problems, the paperboard is not subjected to limited positioning when being placed on the conveying belt, the cigarette box is prone to deviation under the stress of rapid conveying of the conveying belt, meanwhile, the edges of the cigarette box are prone to being warped or turned up under the action of wind pressure, meanwhile, the cigarette box is not cleaned of residual debris and impurities, thereby affecting image collection of the industrial camera and detection results, therefore, the application provides a defect detection device for cigarette box printing. CONTENT OF THE UTILITY MODEL
[0004] The application aims to solve the problems in the background art, and provides a defect detection device for cigarette box printing.
[0005] In order to achieve the above-mentioned purpose, the application specifically adopts the following technical scheme:
[0006] A defect detection device for cigarette box printing comprises:
[0007] A conveying seat is rotatably provided with conveying rollers at both ends, conveying belts are arranged on the two conveying rollers, a plurality of air holes are arranged on the conveying belt along the conveying surface, and an industrial camera is arranged on the conveying seat through a mounting frame.
[0008] An adsorption and impurity removal mechanism comprises a negative pressure box arranged on the conveying seat, the top of the negative pressure box is open and abuts against the conveying belt, a partition plate is arranged in the negative pressure box, a plurality of air fans are arranged on the partition plate, and a plurality of air pipes are arranged in the negative pressure box and communicated with the bottom of the negative pressure box through two guide plates.
[0009] A removal mechanism is arranged on the conveying seat and used for removing the cigarette box with defects from the conveying belt.
[0010] Furthermore, a lead screw is threaded through the transmission seat, and a guide plate is rotatably connected to the end of the lead screw. A guide rod with its end sliding through the transmission seat is provided on the guide plate.
[0011] Furthermore, the connection between the guide plate and the trachea is inclined downwards, and the connection ports on the two guide plates are staggered.
[0012] Furthermore, a light-shielding box is provided on the transmission base, the industrial camera is located inside the light-shielding box, and a supplementary light is provided inside the light-shielding box.
[0013] Furthermore, the fill light is a ring-shaped LED light, which is installed on the inner top wall of the light shield and is coaxial with the industrial camera.
[0014] Furthermore, the rejection mechanism includes an electric push rod disposed on one side of the transmission seat, a push plate disposed on the piston end of the electric push rod, and a notch is provided on the side of the transmission seat away from the electric push rod, and a collection frame is disposed at the notch.
[0015] Furthermore, several guide rollers are rotatably arranged on the transmission seat, and several guide rollers are sequentially wound around the upper transmission section of the transmission belt so that the upper transmission section of the transmission belt has a notch during transmission, and the push plate is located in the notch.
[0016] Furthermore, a limiting plate is provided on the transmission base via a mounting bracket, and an avoidance groove is provided through the limiting plate.
[0017] The beneficial effects of this application are as follows:
[0018] In this application, two guide plates are used to initially guide the cigarette box to prevent it from shifting during transport. Then, a negative pressure box, in conjunction with the air holes on the conveyor belt, uses negative pressure to adhere the cigarette box to the surface of the conveyor belt. This ensures that the cigarette box will not shift, warp, or flip due to the wind pressure generated by the high-speed movement of the conveyor belt, thus ensuring that it passes under the industrial camera flat and stably. The exhaust air then blows the surface of the cigarette box to prevent paper scraps and other impurities from affecting image acquisition, thereby ensuring the detection results. Attached Figure Description
[0019] Figure 1 This is a three-dimensional structural diagram of this application;
[0020] Figure 2 This is another perspective of the three-dimensional structure of this application;
[0021] Figure 3 This is a three-dimensional structural sectional view of this application;
[0022] Figure 4 This is yet another three-dimensional structural sectional view of this application;
[0023] Figure 5 is the enlarged view of A in the present application Figure 3 is the enlarged view of B in the present application
[0024] Figure 6 is the enlarged view of A in the present application Figure 3 is the enlarged view of B in the present application
[0025] Fig. 1 is a transmission seat; 2 is a transmission roller; 3 is a transmission belt; 4 is an air hole; 5 is an industrial camera; 6 is an adsorption impurity removal mechanism; 7 is a rejection mechanism; 8 is a lead screw; 9 is a guide rod; 10 is a light shielding box; 11 is a light supplementing lamp; 12 is a guide roller; 13 is a limiting plate; 14 is an avoiding groove; 601 is a negative pressure box; 602 is a partition; 603 is a fan; 604 is a guide plate; 605 is an air pipe; 701 is an electric push rod; 702 is a push plate; 703 is a collection frame. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.
[0027] As Figures 1-6 shown, one embodiment of the present application proposes a defect detection device for cigarette box printing, which comprises:
[0028] The transmission seat 1 is rotatably provided with transmission rollers 2 at both ends, and the transmission belt 3 is wound on the two transmission rollers 2, preferably, in actual use, the end of one of the transmission rollers 2 is connected with a motor provided on the transmission seat 1, the motor works to drive the transmission of the transmission belt 3, a plurality of air holes 4 are arrayed through the transmission surface of the transmission belt 3, the industrial camera 5 is provided on the transmission seat 1 through a mounting bracket, preferably, the industrial camera 5 adopts a high-resolution CCD camera, which can clearly capture the details on the surface of the cigarette box, and the industrial computer and image processing software matched with the industrial camera 5 are provided on the transmission seat 1, which can identify defects according to the images collected by the industrial camera 5, when the cigarette box is detected for defects, the cigarette box is placed on the transmission belt 3 for transmission, the industrial camera 5 collects images of the cigarette box, and then the collected images are identified through the industrial computer and image processing software, so as to complete the defect detection;
[0029] The adsorbing and impurity removing mechanism 6 comprises a negative pressure box 601 arranged on the transmission seat 1, the negative pressure box 601 is connected between the inner walls of the transmission seat 1 through a connecting rod, and the negative pressure box 601 is located between the upper and lower transmission sections of the transmission belt 3, the negative pressure box 601 is in strip shape and corresponds to the air holes 4, the top of the negative pressure box 601 is open and abuts and overlaps with the upper transmission section of the transmission belt 3, a partition plate 602 is arranged in the negative pressure box 601, a plurality of fans 603 are arranged on the partition plate 602, the fans 603 blow air downward, two guide plates 604 are arranged on the transmission seat 1, the bottom of the negative pressure box 601 is in communication with a plurality of air pipes 605 through the two guide plates 604, when the cigarette boxes are transmitted, the cigarette boxes are placed on the transmission belt 3 and located between the two guide plates 604, the two guide plates 604 guide the cigarette boxes to avoid left and right deviation of the cigarette boxes, at the same time, the cigarette boxes are just located above the air holes 4 (after the cigarette boxes are arranged in sequence, there is a certain distance between the cigarette boxes and the air holes 4 are not completely covered), when the transmission belt 3 is transmitted, the plurality of fans 603 work at the same time and blow air downward, because the fans 603 blow air downward, the air flow in the outside flows into the negative pressure box 601 through the air holes 4 on the transmission belt 3, it needs to be explained that, under the premise that the air holes 4 on the top of the negative pressure box 601 are not blocked by the cigarette boxes, the total air inlet amount of the plurality of air holes 4 is less than the air outlet amount of the fans 603, and the air inlet amount is less than the air outlet amount due to the blockage of the cigarette boxes, therefore, the negative pressure box 601 generates negative pressure, the negative pressure acts on the cigarette boxes through the air holes 4, so that the cigarette boxes are tightly attached to the transmission belt 3, under the limiting of the guide plates 604, when the transmission belt 3 is transmitted, the cigarette boxes do not deviate left and right, and the edges of the cigarette boxes do not have the phenomena of edge lifting and edge turning, which ensures the flat and stable transmission of the cigarette boxes, the industrial camera 5 is below the cigarette boxes, which ensures the effective and stable collection of images, at the same time, the air flow blown downward through the air pipes 605 connected between the guide plates 604 and the bottom of the negative pressure box 601, so that the surface of the cigarette boxes is blown, so that the paper scraps and other impurities on the surface of the cigarette boxes are blown away, which ensures that the collection of images is not affected, so as to ensure effective detection;
[0030] The rejection mechanism 7 is arranged on the transmission seat 1 and is used for removing the cigarette boxes with defects from the transmission belt 3, preferably, the rejection mechanism 7 is used in cooperation with the industrial computer, when the defective products (with defects) are detected, the rejection mechanism 7 removes the defective products from the transmission belt 3, and the normal good products continue to be transmitted by the transmission belt 3, so as to be used for subsequent processing;
[0031] In the scheme, two guide plates 604 are arranged to preliminarily guide the cigarette case to prevent deviation during transmission. Then, the negative pressure box 601 cooperates with the air holes 4 on the transmission belt 3 to adsorb the cigarette case on the surface of the transmission belt 3 by negative pressure. When the transmission belt 3 is transmitted at high speed, the cigarette case will not be displaced, warped or turned up due to the wind pressure generated by high-speed movement, ensuring that it passes stably and flatly below the industrial camera 5. Then, the discharged air blows the surface of the cigarette case to avoid the influence of paper scraps and other impurities on image acquisition, thereby ensuring the detection result.
[0032] As shown in Figure 2 , in some embodiments, a screw rod 8 is screwed through the transmission seat 1, the guide plates 604 are rotationally connected to the ends of the screw rod 8, and a guide rod 9 slidingly penetrating the transmission seat 1 is arranged on the guide plate 604. By rotating and moving the screw rod 8, the guide plate 604 is horizontally moved under the sliding guidance of the guide rod 9, thereby driving the guide plate 604 to slide. The two guide plates 604 can be adjusted to adjust the distance between them, so as to adapt to cigarette cases of different sizes, thereby improving the practicability.
[0033] As shown in Figure 2 and Figure 4 , in some embodiments, the communication ports of the guide plates 604 and the air pipes 605 are inclined downward, and the communication ports on the two guide plates 604 are staggered. By inclining the communication ports of the guide plates 604 and the air pipes 605 downward, the airflow sprayed through the air pipes 605 blows obliquely on the surface of the cigarette case. Since the cigarette case is adsorbed on the transmission belt 3 by negative pressure, the obliquely blowing airflow blows on the surface of the cigarette case, blowing away impurities while giving the cigarette case a downward air pressure. By using this air pressure, the cigarette case can be more firmly attached to the transmission belt 3. The communication ports on the two guide plates 604 are staggered to avoid convection caused by airflows on both sides, thereby improving the practicability.
[0034] As shown in Figure 3 , in some embodiments, a light shielding box 10 is arranged on the transmission seat 1, and the industrial camera 5 is located in the light shielding box 10. A fill light 11 is arranged in the light shielding box 10. By arranging the light shielding box 10 and the fill light 11 in the light shielding box 10, the influence of external light on the light in the light shielding box 10 can be avoided, and the fill light 11 can be used for lighting, so that the industrial camera 5 can capture the patterns on the cigarette case more clearly, thereby improving the practicability.
[0035] As shown in Figure 3 , in some embodiments, the fill light 11 is a ring-shaped LED lamp, and the fill light 11 is arranged on the inner top wall of the light shielding box 10 and coaxial with the industrial camera 5. The fill light 11 is a ring-shaped LED lamp, which makes the illumination clearer. The ring shape and coaxiality with the industrial camera 5 can uniformly illuminate the surface of the cigarette case, reducing shadow interference, thereby improving the practicability.
[0036] As Figure 2 shown, in some embodiments, the rejection mechanism 7 includes an electric push rod 701 arranged on one side of the transmission seat 1, the piston end of the electric push rod 701 is provided with a push plate 702, the side of the transmission seat 1 away from the electric push rod 701 is provided with a notch and a collection frame 703, when a defective cigarette case is detected and the cigarette case is transmitted to the position of the electric push rod 701, the electric push rod 701 quickly operates one stroke (its piston rod first protrudes and then retracts), the piston rod drives the push plate 702 to hit the cigarette case, so that the cigarette case is pushed from the transmission belt 3 into the collection frame 703, thereby realizing the rejection operation of defective products.
[0037] As Figure 3 and Figure 6 shown, in some embodiments, a plurality of guide rollers 12 are arranged on the transmission seat 1, the upper transmission section of the transmission belt 3 is sequentially arranged around the plurality of guide rollers 12, so that the upper transmission section of the transmission belt 3 has a notch when transmitting, and the push plate 702 is located in the notch. Figure 6 As shown, the number of guide rollers 12 is three, which forms a V-shaped notch for the transmission belt 3, and the cigarette case can normally pass through the V-shaped notch. By configuring the notch and locating the push plate 702 in the notch, even if the cigarette case is thin, the push plate 702 can effectively push the cigarette case for rejection, and at the same time, the push plate 702 can avoid rubbing and scratching the transmission belt 3, so as to ensure that the transmission belt 3 can normally transmit.
[0038] Figure 2 and Figure 6 As shown, in some embodiments, a limiting plate 13 is arranged on the transmission seat 1 through a mounting frame, the limiting plate 13 is provided with an avoiding slot 14, preferably, the limiting plate 13 is horizontally arranged above the transmission belt 3, and the limiting plate 13 has a gap with the transmission belt 3, which is sufficient for the cigarette case to pass through normally, the avoiding slot 14 corresponds to the push plate 702, so that the push plate 702 can move along the avoiding slot 14. Since the cigarette case is thin, when the push plate 702 pushes the cigarette case at high speed, the cigarette case is easily affected by wind pressure and flies and stays on the transmission belt 3. By arranging the limiting plate 13, the push plate 702 can limit the cigarette case when pushing the defective cigarette case, so as to avoid the cigarette case from flying, so that the cigarette case can effectively separate from the transmission belt 3, thereby improving the practicability.
[0039] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A defect detection device for cigarette box printing, characterized in that, include: The transmission base (1) has a transmission roller (2) rotatably mounted at both ends. A transmission belt (3) is wound around the two transmission rollers (2). Several air holes (4) are arrayed through the transmission surface of the transmission belt (3). An industrial camera (5) is mounted on the transmission base (1) via a mounting bracket. The adsorption and impurity removal mechanism (6) includes a negative pressure box (601) set on the transmission seat (1). The top of the negative pressure box (601) is open and the opening abuts against the upper transmission section of the transmission belt (3). A partition (602) is set inside the negative pressure box (601). Several fans (603) are set on the partition (602). Two guide plates (604) are set on the transmission seat (1). Both guide plates (604) are connected to the bottom array of the negative pressure box (601) by several air pipes (605). The rejection mechanism (7) is set on the conveyor seat (1) and is used to remove defective cigarette boxes from the conveyor belt (3).
2. The defect detection device for cigarette box printing according to claim 1, characterized in that, A lead screw (8) is threaded through the transmission seat (1), and a guide plate (604) is rotatably connected to the end of the lead screw (8). A guide rod (9) with its end sliding through the transmission seat (1) is provided on the guide plate (604).
3. The defect detection device for cigarette box printing according to claim 1, characterized in that, The connection between the guide plate (604) and the trachea (605) is inclined downward, and the connection ports on the two guide plates (604) are staggered.
4. The defect detection device for cigarette box printing according to claim 1, characterized in that, A light shield (10) is provided on the transmission base (1), and the industrial camera (5) is located inside the light shield (10). A supplementary light (11) is provided inside the light shield (10).
5. The defect detection device for cigarette box printing according to claim 4, characterized in that, The fill light (11) is a ring-shaped LED light, which is set on the inner top wall of the light shield (10) and coaxial with the industrial camera (5).
6. The defect detection device for cigarette box printing according to claim 1, characterized in that, The rejection mechanism (7) includes an electric push rod (701) disposed on one side of the transmission seat (1), and a push plate (702) is provided on the piston end of the electric push rod (701). A notch is provided on the side of the transmission seat (1) away from the electric push rod (701) and a collection frame (703) is provided at the notch.
7. The defect detection device for cigarette box printing according to claim 6, characterized in that, The transmission seat (1) is rotatably provided with several guide rollers (12), and the upper transmission section of the transmission belt (3) is sequentially wound with several guide rollers (12) so that the upper transmission section of the transmission belt (3) has a notch during transmission, and the push plate (702) is located in the notch.
8. The defect detection device for cigarette box printing according to claim 1, characterized in that, The transmission base (1) is provided with a limiting plate (13) by means of a mounting bracket, and the limiting plate (13) is provided with a clearance groove (14).