A delay structure for a cigarette case appearance defect detection system

Abstract

The present invention relates to a delay structure for a cigarette box appearance defect detection system, belonging to the technical field of detection equipment. It includes a frame, a conveyor belt, a rotating roller, an industrial camera, a feeding structure, a baffle on one side of the conveyor belt. The baffle is provided with a chute, a notch is opened in the surrounding area below the industrial camera in the chute, a plurality of positioning frames are evenly distributed on the outer surface of the conveyor belt, and one side of the positioning frame is hinged to the conveyor belt; a torsion spring fixedly connected to the positioning frame, a slider fixed on the torsion spring, and the slider slides along the chute; a gap in the middle of the conveyor belt, an elastic member is arranged in the gap, the top of the elastic member is arc-shaped, and the elastic member is located below the industrial camera; a stepping motor fixed on the frame, a driving block is fixed on the output shaft of the stepping motor, the driving block is located at one end of the notch away from the feeding structure, and the cigarette box is blocked below the industrial camera by the elastic member, increasing the residence time of the cigarette box below the industrial camera and improving the appearance defect detection quality of the cigarette box.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and particularly relates to a delay structure for a cigarette box appearance defect detection system. Background Art

[0002] Appearance images are printed on the outer surface of cigarette boxes. If there are defects in the position, color, shape of the images and the shape of the cigarette boxes, the packaging qualification rate of the cigarette boxes will be reduced.

[0003] Currently, industrial cameras are arranged at the upper, lower, front and rear positions of the conveyor belt to take pictures, and then the data is uploaded to a computer for comparison with preset standard data to screen out cigarette boxes with appearance defects, thereby improving the packaging qualification rate of the cigarette boxes.

[0004] However, the detection of cigarette boxes is completed during the conveying process. Since it is necessary to ensure that the time for the cigarette boxes to pass through the entire process cannot be too long, the conveying speed of the conveyor belt is relatively fast, resulting in a short time for the cigarette boxes to pass by the industrial camera and a short scanning time for the industrial camera to scan a single cigarette box, which will reduce the quality of the appearance defect detection of the cigarette boxes. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a delay structure for a cigarette box appearance defect detection system, so that when the cigarette box to be detected passes by the industrial camera, the conveyor belt continues to rotate, while the cigarette box is blocked under the industrial camera for a period of time, increasing the time for the cigarette box to be scanned under the industrial camera and improving the quality of the appearance detection of the cigarette boxes.

[0006] The present invention solves the above technical problems through the following technical means: A delay structure for a cigarette box appearance defect detection system, including a frame, a conveyor belt and a rotating roller for driving the conveyor belt to rotate. An industrial camera is arranged on the frame above the conveyor belt; it also includes a feeding structure docked with the conveyor belt; and, a baffle is arranged on one side of the conveyor belt, the baffle is fixedly connected to the frame, a chute is provided on the baffle, and a notch is opened in the surrounding area of the chute under the industrial camera; and, a plurality of positioning frames evenly distributed on the outer surface of the conveyor belt, the positioning frames are U-shaped, one side of the positioning frame is hinged to the conveyor belt; and, a torsion spring fixedly connected to the positioning frame, the torsion spring is located between the positioning frame and the baffle; and, a slider fixed to the end of the torsion spring away from the positioning frame, the slider slides along the chute; and, a gap is opened in the conveyor belt, an elastic member is arranged in the gap, the top of the elastic member is arc-shaped, and the elastic member is located under the industrial camera; and, a stepping motor fixed to the frame, the output shaft of the stepping motor passes through the baffle, and a driving block is fixed to the output shaft of the stepping motor, the driving block is located at one end of the notch away from the feeding structure, and the rotation radius of the driving block intersects with the movement track of the slider.

[0007] Furthermore, a groove is provided on the slider, and a roller rotatably connected to the slider is arranged in the groove, and the roller slides along the chute.

[0008] Through the roller, the friction between the slider and the baffle can be reduced, so that the slider, the torsion spring and the positioning frame move synchronously along the longitudinal direction of the conveyor belt.

[0009] Furthermore, the elastic member includes a rubber block with an arc-shaped top end, the rubber block is located in the gap and passes through the belt; and a cylinder slidably connected to the bottom end of the rubber block, the inside of the cylinder is hollow, and the rubber block is located inside the cylinder; and a spring with one end fixedly connected to the rubber block, the other end of the spring is fixedly connected to the frame, and the spring is located inside the cylinder.

[0010] The cigarette carton moves along with the conveyor belt until the cigarette carton abuts against the arc-shaped top end of the rubber block. The cigarette carton is blocked by the rubber block under the industrial camera. Until the conveyor belt continues to move with the positioning frame, until the positioning frame abuts against the cigarette carton, the cigarette carton continues to push the rubber block, so that the rubber block compresses the spring and slides down along the inner wall of the cylinder. The rubber block retracts below the conveyor belt. After the adjacent positioning frame and the cigarette carton that has completed the detection pass above the rubber block, the rubber block resets under the action of the spring and is ready to block the next cigarette carton.

[0011] Furthermore, the feeding structure includes a centrifugal disc and an intermittent pushing device. A T-shaped channel communicating with the conveyor belt is provided on the centrifugal disc, and the intermittent pushing device communicates with the T-shaped channel.

[0012] The cigarette cartons are placed on the centrifugal disc in batches. Under the action of centrifugal force, the cigarette cartons slide into the T-shaped channel one by one, and then the intermittent pushing device pushes the cigarette cartons in the T-shaped channel into the positioning frame on the conveyor belt one by one, realizing the automatic loading of the cigarette cartons to be detected.

[0013] Furthermore, a limiting plate is fixed on one side of the positioning frame away from the conveyor belt, and the limiting plate is located at one end away from the opening of the positioning frame.

[0014] Furthermore, the number of the limiting plates is two, and the two limiting plates and the two corners at one end of the positioning frame away from the opening enclose a triangle.

[0015] Advantages of the present invention: The cigarette cartons to be detected are sent into the positioning frame on the conveyor belt through the feeding structure. The cigarette cartons are located at the opening of the positioning frame. Then, the cigarette cartons and the positioning frame move towards the industrial camera under the action of the conveyor belt until the slider slides to the notch. Under the action of the torsion spring, the positioning frame flips 180 degrees. Subsequently, it continues to move until the cigarette cartons are blocked under the industrial camera by the elastic member, increasing the residence time of the cigarette cartons under the industrial camera and improving the detection quality of the appearance defects of the cigarette cartons. Then, driven by the stepping motor, the driving block rotates, and the driving block drives the slider to rotate, pressing the slider into the chute again, and the positioning frame also flips 180 degrees to prepare for the next feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the delay structure of the cigarette carton appearance defect detection system of the present invention;

[0017] Figure 2 is Figure 1 a partial enlarged view of part A in

[0018] Figure 3 is Figure 2 a partial enlarged view of part B in

[0019] Figure 4 is a schematic structural diagram of the elastic member in the present invention;

[0020] Wherein: 100 - delay structure, 10 - frame, 20 - conveyor belt, 21 - gap, 30 - rotating roller, 40 - industrial camera, 50 - feeding structure, 51 - centrifugal disk, 52 - intermittent pushing device, 53 - T-shaped channel, 60 - baffle, 61 - chute, 62 - notch, 70 - positioning frame, 80 - torsion spring, 90 - slider, 91 - groove, 92 - roller, 110 - elastic member, 111 - rubber block, 112 - cylinder, 113 - spring, 120 - stepping motor, 121 - driving block, 130 - limiting plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following specific embodiments are used to illustrate the implementation manners of the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. It should be noted that the drawings provided in the following embodiments are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation to the present invention. In order to better illustrate the embodiments of the present invention, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual products; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0022] In the figures of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the figure. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the figure are only for illustrative purposes and should not be construed as a limitation to the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0023] As Figures 1 to 4 shown, a delay structure 100 of a cigarette box appearance defect detection system of the present invention includes a frame 10 fixed to the workshop floor by anchor bolts and two rotating rollers 30 installed on the frame 10. The rotating rollers 30 are driven by a motor, and a conveyor belt is connected between the two rotating rollers 30. An industrial camera 40 for scanning the appearance defects of the cigarette box is fixed on the frame 10, and the industrial camera 40 is located above the conveyor belt.

[0024] A plurality of positioning frames 70 are evenly distributed on the outer surface of the conveyor belt. The positioning frames 70 are hinged to the conveyor belt, and the positioning frames 70 are concave font frame structures. A torsion spring 80 is fixed on one side of the positioning frame 70, and a slider 90 is fixed at the end of the torsion spring 80 away from the positioning frame 70. A baffle 60 is also fixed on the frame 10. The baffle 60 is arc-shaped and surrounds the conveyor belt for one week. The baffle 60 is located at the end of the slider 90 away from the torsion spring 80. A chute 61 is opened on the baffle 60, and the trajectory of the chute 61 is parallel to the outer edge of the side of the conveyor belt. Driven by the conveyor belt, the slider 90 slides along the chute 61. A notch 62 is opened in the surrounding area of the chute 61 under the industrial camera 40. When the slider 90 slides to the notch 62, the restriction on the torsion spring 80 is lost, and under the action of the torsion spring 80, the positioning frame 70 rotates 180 degrees.

[0025] At one end of the upper surface of the conveyor belt opposite to the driving direction, a feeding structure 50 is connected. The feeding structure 50 includes a centrifugal disc 51 and an intermittent pushing device 52. The surface area of the centrifugal disc 51 is relatively large, facilitating the batch placement of cigarette boxes to be detected at one time. A T-shaped channel 53 communicating with the conveyor belt is opened on the centrifugal disc 51. One end of the T-shaped channel 53 communicates with the conveyor belt and corresponds to the positioning frame 70 at the end of the conveyor belt. The slider 90 corresponding to this positioning frame 70 is located in the chute 61, and the opening of this positioning frame 70 faces the T-shaped channel 53. Along the longitudinal direction of the conveyor belt and at the end far from the positioning frame 70 of the T-shaped channel 53, there is an intermittent pushing device 52. The intermittent pushing device 52 can adopt a crank-slider 90 structure and other cyclic pushing structures. Under the action of centrifugal force, the cigarette boxes on the centrifugal disc 51 slide into the T-shaped channel 53 one by one, and then the intermittent pushing device 52 pushes the cigarette boxes in the T-shaped channel 53 to the opening of the positioning frame 70 on the conveyor belt one by one, realizing the automatic loading of the cigarette boxes to be detected.

[0026] At the axis position in the longitudinal direction of the conveyor belt, a gap 21 is opened. An elastic member 110 passing through the upper surface of the conveyor belt is provided in the gap 21. The bottom end of the elastic member 110 is fixedly connected to the frame 10. The top end of the elastic member 110 is arc-shaped, and the elastic member 110 is located below the industrial camera 40. When the slider 90 slides to the notch 62, driven by the torsion spring 80, the positioning frame 70 rotates 180 degrees, so that the opening of the positioning frame 70 faces the elastic member 110. First, the cigarette box at the opening of the positioning frame 70 contacts the elastic member 110 and is intercepted below the industrial camera 40, increasing the residence time of the cigarette box below the industrial camera 40 and improving the appearance defect detection quality of the cigarette box.

[0027] A stepping motor 120 is also fixed on the frame 10. The output shaft of the stepping motor 120 passes through the baffle 60. A driving block 121 is fixed on the output shaft of the stepping motor 120. The driving block 121 is located at the end of the notch 62 far from the feeding structure 50. The rotation radius of the driving block 121 intersects with the moving track of the slider 90. Driven by the stepping motor 120, the driving block 121 rotates, and the driving block 121 drives the slider 90 to rotate, pressing the slider 90 into the chute 61 again, and the positioning frame 70 also flips 180 degrees to prepare for the next feeding.

[0028] Specifically, a groove 91 is opened on the slider 90, and a roller 92 rotatably connected to the slider 90 is arranged in the groove 91. The roller 92 slides along the chute 61. Through the roller 92, the friction between the slider 90 and the baffle 60 can be reduced, so that the slider 90, the torsion spring 80 and the positioning frame 70 move synchronously along the longitudinal direction of the conveyor belt.

[0029] Specifically, the elastic member 110 includes a rubber block 111 with an arc-shaped top end. The rubber block 111 is located within the gap 21 and passes through the belt. Further, there is a cylinder 112 slidably connected to the bottom end of the rubber block 111. The interior of the cylinder 112 is hollow, and the rubber block 111 is located inside the cylinder 112. Additionally, there is a spring 113 with one end fixedly connected to the rubber block 111 and the other end fixedly connected to the frame 10. The spring 113 is located inside the cylinder 112. The cigarette case moves along with the conveyor belt until the cigarette case abuts against the arc-shaped top end of the rubber block 111. The cigarette case is blocked by the rubber block 111 below the industrial camera 40. Until the conveyor belt continues to move with the positioning frame 70 until the positioning frame 70 abuts against the cigarette case. The cigarette case continues to push the rubber block 111, causing the rubber block 111 to compress the spring 113 and slide downward along the inner wall of the cylinder 112. The rubber block 111 retracts below the conveyor belt. After the adjacent positioning frame and the inspected cigarette case pass above the rubber block 111, the rubber block 111 resets under the action of the spring 113, ready to block the next cigarette case.

[0030] Specifically, a limiting plate 130 is fixed to the side of the positioning frame 70 away from the conveyor belt. The limiting plate 130 is located at one end away from the opening of the positioning frame 70. Under the interception of the rubber block 111, the positioning frame 70 continues to move in the direction of the rubber block 111 until the cigarette case abuts against the end of the positioning frame 70 away from its opening. When the positioning frame 70 pushes the cigarette case to continue moving in the direction of the rubber block 111 and presses the rubber block 111 downward, the limiting plate 130 can prevent the cigarette case from flying out above the positioning frame 70.

[0031] Specifically, the number of the limiting plates 130 is two. The two limiting plates respectively enclose a triangle with the two corners at the end of the positioning frame 70 away from the opening. By arranging the limiting plates at the two top corner positions of the positioning frame 70, it can not only achieve a good effect of preventing the cigarette case from flying out but also reduce the occlusion of the industrial camera 40.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention. The technologies, shapes, and structures not described in detail in the present invention are all well-known technologies.

Claims

1. A delay structure for a cigarette case appearance defect detection system, comprising a frame, a conveyor belt and a rotating roller for driving the conveyor belt to rotate, wherein an industrial camera is arranged on the frame above the conveyor belt, and the characteristics are as follows: It further includes a feeding structure docked with the conveyor belt; And a baffle plate arranged on one side of the conveyor belt, the baffle plate is fixedly connected to the frame, a chute is provided on the baffle plate, and a notch is provided in the surrounding area below the industrial camera in the chute; And a plurality of positioning frames evenly distributed on the outer surface of the conveyor belt, the positioning frames are U-shaped, and one side of the positioning frame is hinged to the conveyor belt; And a torsion spring fixedly connected to the positioning frame, the torsion spring is located between the positioning frame and the baffle plate; And a slider fixed to the end of the torsion spring away from the positioning frame, the slider slides along the chute; And a gap opened on the conveyor belt, an elastic member is arranged in the gap, the top end of the elastic member is arc-shaped, and the elastic member is located below the industrial camera; And a stepping motor fixed on the frame, the output shaft of the stepping motor passes through the baffle plate, a driving block is fixed on the output shaft of the stepping motor, the driving block is located at one end of the notch away from the feeding structure, and the rotation radius of the driving block intersects with the movement track of the slider; The elastic member includes a rubber block with an arc-shaped top end, the rubber block is located in the gap and passes through the belt; And a cylinder slidably connected to the bottom end of the rubber block, the inside of the cylinder is hollow, and the rubber block is located inside the cylinder; And a spring with one end fixedly connected to the rubber block, the other end of the spring is fixedly connected to the frame, and the spring is located inside the cylinder; A limiting plate is fixed to the side of the positioning frame away from the conveyor belt, and the limiting plate is located at one end away from the opening of the positioning frame.

2. The delay structure for the cigarette case appearance defect detection system according to claim 1, characterized in that: A groove is formed in the slider, and a roller rotatably connected to the slider is arranged in the groove, and the roller slides along the chute.

3. The delay structure for the cigarette case appearance defect detection system according to claim 1, characterized in that: The feeding structure includes a centrifugal disc and an intermittent pushing device, a T-shaped channel communicating with the conveyor belt is opened on the centrifugal disc, and the intermittent pushing device is communicated with the T-shaped channel.

4. The delay structure for the cigarette case appearance defect detection system according to claim 1, characterized in that: The number of the limiting plates is two, and the two limiting plates respectively enclose a triangle with two corners at one end of the positioning frame away from the opening.

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