A cigarette case shape defect detection device

Abstract

The present invention discloses a cigarette box shape defect detection device, which relates to the technical field of detection equipment and includes a frame, a conveyor belt, a positioning member, a first support plate, a second support plate, a third support plate, a guiding plate, a detection rod, a first spring, a first conductive sheet, a first switch, a second switch, a second conductive sheet. There is a notch on the conveyor belt. A cylinder is installed on the first support plate. The cylinder, the first switch and the second switch form a double-switch circuit. When the first switch and the second switch are opened or closed simultaneously, the cylinder is activated to screen out the defective cigarette boxes.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and particularly to a detection device for shape defects of cigarette boxes. Background Art

[0002] Cigarette boxes are used to package cigarette sticks. However, in the production of cigarette boxes, it is inevitable to produce cigarette boxes with irregular shapes. If the angles between the two side surfaces and the upper and lower surfaces of the cigarette box are not perpendicular, using such cigarette boxes with shape defects will inevitably affect the uneven arrangement of the cigarette sticks inside the cigarette box, and further cause the cigarette sticks inside the cigarette box to be squeezed against each other. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a detection device for shape defects of cigarette boxes to screen out cigarette boxes with irregular shapes and avoid the cigarette sticks inside the cigarette boxes from being squeezed.

[0004] The present invention solves the above technical problems through the following technical means: It includes a frame and a conveyor belt installed on the frame. There is a positioning member on the conveyor belt. Above the conveyor belt, a first support plate parallel to the upper surface of the conveyor belt is fixed. On both sides of the first support plate, second support plates are fixed. The second support plates are perpendicularly arranged relative to the first support plate. Outside the second support plates, there is a third support plate hinged to the first support plate. The bottom surface horizontal height of the third support plate is less than the bottom surface horizontal height of the second support plate. One end of the third support plate along the length direction of the conveyor belt is fixed with a guiding plate, and the guiding plate is arranged to expand outwards. A detection rod is horizontally arranged on the third support plate. The detection rod passes through the third support plate and is slidably connected to the third support plate. One end of the detection rod extends into the inner side of the third support plate. The end of the detection rod extending into the inner side of the third support plate is arc-shaped. The other end of the detection rod is fixed with a first spring. At the end of the detection rod far from the third support plate, there is a first conductive sheet. A first switch is fixedly connected to the frame, and the first switch corresponds to the first conductive sheet. The frame is provided with a second switch. Outside the third support plate, there is a second conductive sheet, and the second conductive sheet corresponds to the second switch. A notch is opened on the conveyor belt, and the notch is located below the first support plate. A cylinder is installed on the first support plate. The telescopic rod of the cylinder passes through the first support plate and faces the conveyor belt. The cylinder, the first switch, and the second switch form a double-switch circuit.

[0005] The achieved technical effects are as follows: During use, the cigarette box moves towards the first support plate on the conveyor belt, and the positioning member ensures that the cigarette box is stationary relative to the conveyor belt. The second support plate abuts against the third support plate, causing the third support plate to maintain a state perpendicular to the upper surface of the conveyor belt in a stationary state. When the angle between the upper and lower surfaces and the side surface of the cigarette box is less than 90 degrees, the side surface of the cigarette box does not contact the detection rod and the third support plate, so the first switch and the second switch are both closed, energizing the cylinder, and the telescopic rod of the cylinder pushes this cigarette box out from the notch, achieving the purpose of screening out the cigarette boxes with an angle less than 90 degrees between the side surface and the upper and lower surfaces;

[0006] When the angle between the upper and lower surfaces and the side surface of the cigarette box is equal to 90 degrees, the cigarette box pushes the detection rod outwards, causing the first conductive sheet to connect the first switch, while the second switch is in a closed state, so the cylinder is in a de-energized state, enabling the normally shaped cigarette boxes to be normally conveyed from the conveyor belt;

[0007] When the angle between the upper and lower surfaces and the side surface of the cigarette box is greater than 90 degrees, the cigarette box first abuts against the guiding plate, causing the guiding plate to drive the third support plate to rotate outwards relative to the first support plate. The second conductive sheet on the third support plate connects the second switch. When the cigarette box continues to move to the inside of the third support plate, it also pushes the detection rod outwards, and the first conductive sheet connects the first switch, energizing the cylinder, and the telescopic rod of the cylinder pushes this cigarette box out from the notch, achieving the purpose of screening out the cigarette boxes with an angle greater than 90 degrees between the side surface and the upper and lower surfaces.

[0008] After the first detection rod drives the first conductive sheet to connect the first switch, when a cigarette box is completed with detection, under the action of the first spring, it drives the first detection rod to reset, realizing the continuity of the detection of the shape defects of the cigarette boxes.

[0009] Furthermore, the positioning member includes multiple groups of clamping structures evenly distributed on the conveyor belt. Each clamping structure fixes a cigarette box to be detected, leaving a spacing between each cigarette box, providing sufficient return time for the telescopic rod of the cylinder.

[0010] Furthermore, each group of clamping structures includes a baffle, a resisting rod, and a second spring. The number of baffles is two, and the two baffles are arranged opposite to each other along the transverse direction of the conveyor belt. The resisting rod is fixed inside the baffle, and the second spring is wound around the outside of the resisting rod. One end of the second spring is fixedly connected to the resisting rod, and the other end is fixedly connected to the baffle.

[0011] The baffle fixes the resisting rod. The axis of the resisting rod is parallel to the horizontal plane. The second spring keeps the resisting rod moving towards the cigarette box inside. When fixing the cigarette boxes on the conveyor belt, it also facilitates the telescopic rod of the cylinder to overcome the elastic force of the second spring and push out the defective cigarette boxes when screening out the cigarette boxes with shape defects.

[0012] Further, a top plate is welded on the telescopic rod of the air cylinder. The top plate is located at one end of the output shaft of the air cylinder facing the conveyor belt. The top plate can increase the contact area with the cigarette case and reduce the damage to the outer surface of the cigarette case caused by the telescopic rod of the air cylinder when pushing out the cigarette case.

[0013] Further, a slide rail is provided below the conveyor belt. The slide rail is located below the notch and is inclined. The pushed cigarette case with shape defects falls from the notch onto the slide rail and slides out along the slide rail to the recycling place. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of the cigarette case shape defect detection device of the present invention;

[0015] Figure 2 is Figure 1 a partial enlarged view of part A in

[0016] Figure 3 is Figure 1 a partial enlarged view of part B in

[0017] Figure 4 is a partial enlarged view of the first switch in the present invention;

[0018] Figure 5 is a partial enlarged view of the second switch in the present invention;

[0019] Figure 6 is the electrical schematic diagram of the cigarette case defect detection device of the invention;

[0020] Wherein: 100 - detection device, 10 - frame, 20 - conveyor belt, 21 - notch, 30 - positioning member, 31 - clamping structure, 311 - baffle, 312 - abutting rod, 313 - second spring, 40 - first support plate, 50 - second support plate, 60 - third support plate, 70 - guiding plate, 80 - detection rod, 85 - first spring, 90 - first conductive sheet, 110 - first switch, 120 - second switch, 130 - second conductive sheet, 140 - air cylinder, 141 - top plate, 150 - slide rail. Detailed Embodiment

[0021] The present invention will be described in detail below with reference to the drawings:

[0022] As Figures 1 to 6 shown, a cigarette case shape defect detection device 100 includes a frame 10 fixed on the workshop floor, a conveyor belt 20 installed on the frame 10. The conveyor belt 20 is driven by a motor. A positioning member 30 is provided on the conveyor belt 20 to ensure that the cigarette case placed on the conveyor belt 20 can remain relatively stationary with respect to the conveyor belt 20.

[0023] Specifically, the positioning member 30 includes a plurality of groups of clamping structures 31 evenly distributed on the conveyor belt 20. Two clamping structures 31 that are mirror - set on both sides of the conveyor belt 20 form a group. Each group of clamping structures 31 fixes a cigarette box to be detected, such that there is a spacing between each cigarette box. Each clamping structure 31 includes a baffle 311, a resisting rod 312, and a second spring 313. The baffle 311 is fixed at the longitudinal edge of the conveyor belt. The resisting rod 312 is fixed inside the baffle 311. The second spring 313 is wound around the outside of the resisting rod 312. One end of the second spring 313 is fixedly connected to the resisting rod 312, and the other end is fixedly connected to the baffle 311. The baffle 311 fixes the resisting rod 312. The axis of the resisting rod 312 is parallel to the horizontal plane. The second spring 313 keeps the resisting rod 312 tending to move towards the cigarette box inside, thus fixing the cigarette box on the conveyor belt 20.

[0024] A first support plate 40 parallel to the upper surface of the conveyor belt 20 is fixed above the conveyor belt 20. At both ends of the side of the first support plate 40 facing the conveyor belt 20, second support plates 50 are fixed. The first support plate 40 and the second support plates 50 are perpendicularly arranged. The distance between the bottom surface of the second support plate 50 and the upper surface of the conveyor belt 20 is equal to the thickness of the cigarette box. When the cigarette box passes through, the upper surface of the cigarette box contacts the bottom surface of the second support plate 50.

[0025] A third support plate 60 hinged to the first support plate 40 is provided outside the second support plate 50. The horizontal height of the bottom surface of the third support plate 60 is less than the horizontal height of the bottom surface of the second support plate 50. At one end of the third support plate 60 along the length direction of the conveyor belt 20, a guiding plate 70 is fixed, and the guiding plate 70 expands outwards. The first support plate 40, the second support plates 50, and the third support plates are all made of wood to achieve the purpose of insulation and avoid electric leakage.

[0026] A detection rod 80 is horizontally arranged on the third support plate 60. The detection rod 80 passes through the third support plate 60 and is slidably connected to the third support plate 60. One end of the detection rod 80 extends into the inner side of the third support plate 60, and a first spring 85 is fixed to the other end of the detection rod 80. The end of the detection rod 80 extending into the inner side of the third support plate 60 is arc-shaped. A first conductive sheet 90 is provided at the end of the detection rod 80 away from the third support plate 60. A first switch 110 is fixedly connected to the frame 10. The first switch 110 corresponds to the first conductive sheet 90, and the first switch 110 is located in the horizontal extension direction of the first conductive sheet 90 away from the third support plate 60. The frame 10 is provided with a second switch 120, and a second conductive sheet 130 is provided on the outer side of the third support plate 60. The second conductive sheet 130 corresponds to the second switch 120, and the second switch 120 is located on the rotation track line of the second conductive sheet 130 following the third support plate 60 to rotate outwards. A notch 21 is formed on the conveyor belt 20, and the notch 21 is located below the first support plate 40. A cylinder 140 is installed on the first support plate 40. The telescopic rod of the cylinder 140 passes through the first support plate 40 and faces the conveyor belt 20. The cylinder 140, the first switch 110, and the second switch 120 form a double-pole switch circuit. Both the first conductive sheet 90 and the second conductive sheet 130 are made of copper material.

[0027] During use, the cigarette box moves on the conveyor belt 20 towards the first support plate 40, and the positioning member 30 ensures that the cigarette box is stationary relative to the conveyor belt 20. The second support plate 50 abuts against the third support plate 60, so that the third support plate 60 remains perpendicular to the upper surface of the conveyor belt 20 in a stationary state. When the angle between the upper and lower surfaces and the side surface of the cigarette box is less than ninety degrees, the side surface of the cigarette box does not contact the detection rod 80 and the third support plate 60. Then both the first switch 110 and the second switch 120 are closed, and the cylinder 140 is powered on. The telescopic rod of the cylinder 140 pushes this cigarette box out from the notch 21, achieving the purpose of screening out the cigarette boxes with an angle between the side surface and the upper and lower surfaces less than ninety degrees.

[0028] When the angle between the upper and lower surfaces and the side surface of the cigarette box is equal to ninety degrees, the cigarette box pushes the detection rod 80 outwards, so that the first conductive sheet 90 connects the first switch 110, while the second switch 120 is in the closed state. Then the cylinder 140 is in the power-off state, enabling the normally shaped cigarette boxes to be normally conveyed from the conveyor belt 20.

[0029] When the angle between the upper and lower surfaces and the side surface of the cigarette case is greater than 90 degrees, the cigarette case first abuts against the guide plate 70, causing the guide plate 70 to drive the third support plate 60 to rotate outwards relative to the first support plate 40. The second conductive sheet 130 on the third support plate 60 is connected to the second switch 120. When the cigarette case continues to move to the inside of the third support plate 60, the detection rod 80 is also pushed outwards, and the first conductive sheet 90 is connected to the first switch 110. Then the cylinder 140 is energized, and the telescopic rod of the cylinder 140 pushes this cigarette case out from the notch 21, achieving the purpose of screening out the cigarette cases with an angle greater than 90 degrees between the side surface and the upper and lower surfaces. After the first detection rod 80 drives the first conductive sheet 90 to connect to the first switch 110, when a cigarette case is detected, under the action of the first spring 85, the first detection rod 80 is driven to reset, realizing the continuity of the cigarette case shape defect detection.

[0030] Specifically, a top plate 141 is welded on the telescopic rod of the cylinder 140. The top plate 141 is located at one end of the output shaft of the cylinder 140 facing the conveyor belt 20. The top plate 141 can increase the contact area with the cigarette case and reduce the damage to the outer surface of the cigarette case caused by the telescopic rod of the cylinder 140 when pushing out the cigarette case.

[0031] Specifically, a slide rail 150 is provided below the conveyor belt 20. The slide rail 150 is located below the notch 21 and is inclined. The defective cigarette cases pushed out fall from the notch 21 onto the slide rail 150 and slide out to the recycling place along the slide rail 150.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. 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 spirit 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 cigarette box defect detection device, comprising a frame and a conveyor belt installed on the frame, characterized in that: a positioning member is provided on the conveyor belt, a first support plate parallel to the upper surface of the conveyor belt is fixed above the conveyor belt, second support plates are fixed on both sides of the first support plate, the second support plates are vertically arranged relative to the first support plate, a third support plate hinged to the first support plate is provided outside the second support plate, the bottom horizontal height of the third support plate is less than the bottom horizontal height of the second support plate, a guide plate is fixed at one end of the third support plate along the length direction of the conveyor belt, the guide plate is arranged to expand outwards, a detection rod is transversely arranged on the third support plate, the detection rod passes through the third support plate and is slidably connected to the third support plate, one end of the detection rod extends into the inner side of the third support plate, the end of the detection rod extending into the inner side of the third support plate is arc-shaped, a first spring is fixed at the other end of the detection rod, a first conductive sheet is provided at the end of the detection rod away from the third support plate, a first switch is fixedly connected to the frame, the first switch corresponds to the first conductive sheet, a second switch is provided on the frame, a second conductive sheet is provided outside the third support plate, the second conductive sheet corresponds to the second switch, a notch is formed in the conveyor belt, the notch is located below the first support plate, a cylinder is installed on the first support plate, the telescopic rod of the cylinder passes through the first support plate and faces the conveyor belt, and the cylinder, the first switch and the second switch form a double-switch circuit; a slide rail is provided below the conveyor belt, the slide rail is located below the notch, and the slide rail is inclined.

2. The cigarette box defect detection device according to claim 1, characterized in that: the positioning member includes a plurality of groups of clamping structures evenly distributed on the conveyor belt.

3. The cigarette box defect detection device according to claim 2, characterized in that : each group of the clamping structures includes a baffle, a resisting rod and a second spring, the number of the baffles is two, the two baffles are arranged opposite to each other along the transverse direction of the conveyor belt, the resisting rod is fixed inside the baffle, the second spring is wound outside the resisting rod, one end of the second spring is fixedly connected to the resisting rod, and the other end thereof is fixedly connected to the baffle.

4. The cigarette box defect detection device according to claim 1, characterized in that: a top plate is welded on the telescopic rod of the cylinder, and the top plate is located at one end of the output shaft of the cylinder facing the conveyor belt.

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