Assembly line ring-pull can pull ring on-line detection device

Abstract

The invention discloses an assembly line ring-pull can pull ring on-line detection device which comprises a frame type detection platform and further comprises a detection frame, the detection frame is fixedly installed at the bottom of the front side of the frame type detection platform, a conveying line is arranged on the rear side of the frame type detection platform, and a rejector is arranged on the front side of the conveying line. A control cabinet is arranged on the right side of the frame type detection platform, lifting equipment is arranged in the detection frame, driving equipment is fixedly installed on the surface of the lifting equipment, a visual detector is fixedly installed at the bottom of the driving equipment, a fixing frame is fixedly installed at the bottom of the inner wall of the detection frame, and a hollow plate is fixedly installed at the bottom of the visual detector. A first connecting plate is installed on the inner wall of the hollow plate in a sliding mode, the driving equipment slowly descends to drive the visual detector to slowly descend, and the visual detector slowly descends to scan ring-pull can bottle caps. The device has the characteristic of preventing the visual detector from shaking greatly.

Description

Technical Field

[0001] The invention relates to the technical field of fluid tightness testing, in particular to an online detection device for pull rings of cans on an assembly line. Background Art

[0002] The online inspection device for can pull rings on assembly lines usually consists of a rack inspection platform, a conveyor line and a visual inspection instrument. The visual inspection instrument uses a Gigabit digital camera to take pictures from top to bottom, collect images of can caps, perform digital analysis and 360° template matching on the taken images, and automatically remove cans with unqualified cap angles online.

[0003] The patent with the patent announcement number CN217520694U relates to a high-speed detection and capping device for easy-open lids, and relates to the field of easy-open lid processing machinery. It includes: a fixing unit and a light detection component, the light detection component is arranged on the fixing unit and at least one group is arranged, including a detection body arranged on the upper plate and a light source arranged on the lower plate, the detection body and the light source correspond one to one, the detection body is fixed on the upper plate through a spring pressure plate, the middle part of the spring pressure plate is provided with a middle hole through which the light source passes, a space for accommodating a light-transmitting capping mold is formed between the hollow bottom of the spring pressure plate and the lower plate, a compression spring is arranged between the light-transmitting capping mold and the spring pressure plate, and the lower edge of the light-transmitting capping mold protrudes from the bottom surface of the lower plate under the external force of the compression spring. It realizes rapid capping of easy-open lids that move step by step on the production line, and realizes rapid detection of cans with leaking lids through optical detection equipment.

[0004] In the above patent, optical inspection equipment is used to quickly detect leaking can lids. However, it is difficult to ensure that the visual inspection instrument does not shake significantly when moving. Shaking of the visual inspection instrument will cause the relative position of the visual inspection instrument lens and the can to be unstable, resulting in blurred or offset images of the pull rings. The deformation characteristics of the pull rings cannot be accurately captured, and qualified products are misjudged as defective products, or actual defects are omitted. Therefore, it is very necessary to design an online inspection device for can pull rings on an assembly line that is highly practical and can prevent shaking of the visual inspection instrument. Summary of the invention

[0005] The object of the present invention is to provide an online detection device for can pull rings on an assembly line to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an online detection device for can pull rings on an assembly line, comprising a rack-type detection platform and a detection frame, wherein the detection frame is fixedly installed at the front bottom of the rack-type detection platform, a conveyor line is arranged at the rear side of the rack-type detection platform, a rejector is arranged at the front side of the conveyor line, a control cabinet is arranged on the right side of the rack-type detection platform, a lifting device is arranged inside the detection frame, a driving device is fixedly installed on the surface of the lifting device, a visual detector is fixedly installed at the bottom of the driving device, a fixed frame is fixedly installed at the bottom of the inner wall of the detection frame, and the visual A hollow plate is fixedly installed at the bottom of the visual detector, a connecting plate 1 is slidably installed on the inner wall of the hollow plate, a connecting plate 2 is slidably installed on the inner wall of the hollow plate, an elastic telescopic rod is arranged on the surface of the lifting device, an energy absorbing plate is fixedly installed on the inner wall of the elastic telescopic rod, a delay frame slides through the upper and lower walls of the energy absorbing plate, an energy absorbing hole is opened on the top of the energy absorbing plate, a delay hole is opened on the top of the delay frame, the visual detector is used to apply light to perform fluid tightness test on the pull ring of the can, the driving device slowly descends to drive the visual detector to slowly descend, and the visual detector slowly descends to scan the bottle cap of the can.

[0007] According to the above technical solution, a U-shaped rod is fixedly installed on the top of the visual inspection instrument, a spring 1 is arranged between the energy absorption plate and the delay frame, the delay frame can be supported by the spring 1, and the free end of the elastic telescopic rod is fixedly connected to the lifting device.

[0008] According to the above technical solution, a sealing ring 1 is arranged between the free end of the elastic telescopic rod and the fixed end of the elastic telescopic rod, and the sealing ring 1 can improve the sealing effect between the free end of the elastic telescopic rod and the fixed end of the elastic telescopic rod. Liquid is arranged inside the hollow plate, and a sealing ring 2 is arranged between the hollow plate and the connecting plate 1. The sealing ring 2 can improve the sealing effect between the hollow plate and the connecting plate 1. An exhaust hole is opened at the bottom of the circumferential surface of the elastic telescopic rod, and a mesh screen plate is fixedly installed inside the exhaust hole, and the mesh screen plate can prevent foreign matter from entering the interior of the elastic telescopic rod.

[0009] According to the above technical scheme, a sealing ring three is arranged between the hollow plate and the connecting plate two, and the sealing ring three can improve the sealing effect between the hollow plate and the connecting plate two, the connecting plate one is in contact with the fixing frame, a spring two is arranged between the hollow plate and the connecting plate one, and the connecting plate one can be supported by the spring two, and a spring three is arranged between the hollow plate and the connecting plate two, and the connecting plate two can be supported by the spring three, and the connecting plate two moves toward the direction close to the hollow plate to break away from the contact with the visual detection instrument and release the obstruction of the visual detection instrument lens.

[0010] According to the above technical scheme, a barrier component for preventing liquid from splashing inside the can is arranged inside the lifting device, and a fill light component is arranged on the surface of the detection frame. The barrier component includes a leak-stop hole, a leak-stop plate, a rubber plate, a support rod and a hanging rod. The leak-stop plate moves downward to drive the rubber plate to move downward, and the rubber plate moves downward to block the holes at the bottom of the detection frame. The leak-stop hole is opened at the bottom end of the lifting device, the leak-stop plate is slidably installed on the inner wall of the leak-stop hole, the rubber plate is fixedly installed on the bottom of the leak-stop plate, the support rod is fixedly installed on the bottom of the inner wall of the detection frame, and the hanging rod is fixedly installed on the bottom of the rubber plate.

[0011] According to the above technical solution, the leak-stop plate is slidably connected to the support rod, and a leak-stop spring is arranged between the leak-stop hole and the leak-stop plate. The leak-stop plate moves downward to squeeze the leak-stop spring, and the leak-stop spring is deformed and accumulates force due to the squeezing of the leak-stop plate. After the leak-stop plate is separated from the contact with the U-shaped rod, the leak-stop plate can be driven to reset by the leak-stop spring, and the rubber plate contacts the lifting device. The leak-stop plate moves downward and continuously contacts the support rod and is supported by the support rod.

[0012] According to the above technical solution, the fill light assembly includes a stop plate, a screw rod and a baffle, the stop plate is slidably installed on the bottom of the detection frame, the screw rod is rotatably installed on the side of the detection frame close to the U-shaped rod, the baffle is slidably installed on the side of the detection frame close to the screw rod, and the baffle is threadedly connected to the screw rod. The rotation of the screw rod can be limited by the stop plate.

[0013] According to the above technical solution, the fill light assembly also includes a baffle frame, a baffle rod, a baffle plate and a lighting device. The baffle frame is fixedly installed on the bottom of the baffle plate, the baffle rod is fixedly installed on the side of the screw rod close to the stop plate, the baffle plate is fixedly installed on the circumferential surface of the baffle rod, and the lighting device is arranged on the inner wall of the baffle frame. Starting the screw rod to rotate can drive the baffle plate and the baffle frame to move, and the movement of the baffle frame drives the lighting device to move to adjust the fill light position of the lighting device.

[0014] According to the above technical solution, a spring four is arranged between the stop plate and the detection frame. The stop plate moves toward the direction close to the baffle to squeeze the spring four. The spring four is squeezed by the stop plate to produce deformation and accumulate force. After the stop plate is separated from the contact with the suspension rod, the stop plate can be driven to reset by the spring four. A limiting groove is provided on the circumferential surface of the baffle, and the side of the stop plate close to the suspension rod is set as an inclined surface, and the side of the stop plate close to the baffle is set as an arc surface. The baffle rod cannot rotate, so the screw rod cannot rotate, and the screw rod cannot rotate, so the baffle plate and the baffle frame cannot move horizontally.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are: (1)The in-line detection device for the pull ring of canned drinks on the production line moves away from the vision detector in the direction close to the hollow plate through the second connecting plate, disengaging from the contact with the vision detector and removing the occlusion of the lens of the vision detector. By occluding the lens, direct sunlight of ambient stray light can be avoided from directly shining on the lens, preventing the sensitivity attenuation of the vision detector caused by long-term exposure to strong light in the non-detection state, and ensuring that the vision detector can quickly restore its high-precision testing ability after restarting. The vision detector slowly descends to scan the bottle cap of the canned drink. The slow descent of the vision detector prevents the lens from shaking, and can accurately capture the deformation characteristics of the pull ring, thus avoiding false detection caused by lens shaking.

[0016] (2)The in-line detection device for the pull ring of canned drinks on the production line drives the rubber plate to move downward through the leakage prevention plate moving downward. The downward movement of the rubber plate blocks the holes at the bottom of the detection frame. For the high-pressure environment inside the carbonated canned drink, the elastic buffering and sealing performance of the rubber plate can resist the impact of liquid sputtering, prevent the short circuit of the circuit of the vision detector, and extend the service life of the vision detector.

[0017] (3)The in-line detection device for the pull ring of canned drinks on the production line continuously contacts the support rod and is supported by the support rod as the leakage prevention plate moves downward. The downward movement of the leakage prevention plate and the continuous contact with the support rod to receive force can ensure that the force on the leakage prevention plate is evenly dispersed, avoid deformation caused by excessive local pressure, and then maintain a stable sealing and blocking effect.

[0018] (4)The in-line detection device for the pull ring of canned drinks on the production line drives the baffle and the bracket to move by starting the rotation of the lead screw. The movement of the bracket drives the lighting device to move to adjust the supplementary lighting position of the lighting device. For canned drinks of different sizes and shapes, the lighting angle can be flexibly adjusted to eliminate the interference of shadows and reflections, avoid missed detection caused by uneven illumination, and thus ensure the reliability of the detection results.

[0019] (5)The in-line detection device for the pull ring of canned drinks on the production line makes the lighting device unable to be adjusted when the vision detector is working because the bracket cannot move horizontally. By restricting the movement of the bracket, the offset of the supplementary lighting position caused by the accidental movement of the lighting device can be avoided, further preventing the reflection change of the detection image and maintaining the consistency of the defect recognition of the pull ring of the canned drink. Description of the Drawings

[0020] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the drawings: Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the structural schematic diagram of the position of the vision detector and the hollow plate of the present invention; Figure 3It is a schematic semi-sectional view of the detection frame of the present invention; Figure 4 It is a schematic structural view of the position of the lifting device and the elastic telescopic rod of the present invention; Figure 5 It is the present invention Figure 4 The enlarged schematic view of the structure of part A in; Figure 6 It is a schematic semi-sectional view of the fixed frame of the present invention; Figure 7 It is a schematic semi-sectional view of the elastic telescopic rod of the present invention; Figure 8 It is a schematic semi-sectional view of the energy absorption plate of the present invention; Figure 9 It is a schematic view of the internal structure of the lifting device of the present invention.

[0021] In the figure: 1. Frame-type detection platform; 2. Detection frame; 3. Lifting device; 4. Driving device; 5. Vision detector; 6. Fixed frame; 7. Hollow plate; 8. Connecting plate one; 9. Connecting plate two; 10. Elastic telescopic rod; 11. Energy absorption plate; 12. Delay frame; 13. Energy absorption hole; 14. Delay hole; 15. U-shaped rod; 161. Leakage prevention hole; 162. Leakage prevention plate; 163. Leakage prevention spring; 164. Rubber plate; 165. Support rod; 166. Suspension rod; 171. Position-limiting plate; 172. Lead screw; 173. Baffle; 174. Baffle frame; 175. Baffle rod; 176. Baffle disc. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Embodiment 1: Please refer to Figure 1-8, the present invention provides a technical solution: an on-line detection device for pop-top can pull rings on a production line, including a frame-type detection platform 1, and further including a detection frame 2. The detection frame 2 is fixedly installed at the bottom of the front side of the frame-type detection platform 1. A conveyor line is arranged at the rear side of the frame-type detection platform 1, and a rejector is arranged at the front side of the conveyor line. A control cabinet is arranged on the right side of the frame-type detection platform 1. An elevating device 3 is arranged inside the detection frame 2. A driving device 4 is fixedly installed on the surface of the elevating device 3. A vision detector 5 is fixedly installed at the bottom of the driving device 4. A fixing frame 6 is fixedly installed at the bottom of the inner wall of the detection frame 2. A hollow plate 7 is fixedly installed at the bottom of the vision detector 5. A connecting plate one 8 is slidably installed inside the hollow plate 7. A connecting plate two 9 is slidably installed inside the hollow plate 7. An elastic telescopic rod 10 is arranged on the surface of the elevating device 3. An energy absorption plate 11 is fixedly installed inside the elastic telescopic rod 10. A delay frame 12 slidably penetrates through the upper and lower walls of the energy absorption plate 11. An energy absorption hole 13 is opened at the top of the energy absorption plate 11. A delay hole 14 is opened at the top of the delay frame 12. The vision detector 5 is used to perform a fluid tightness test on the pop-top can pull ring by applying light. By slowly lowering the vision detector 5 to prevent the lens from shaking, the deformation characteristics of the pull ring can be accurately captured, thus avoiding false detection caused by lens shaking.

[0024] A U-shaped rod 15 is fixedly installed at the top of the vision detector 5. A first spring is arranged between the energy absorption plate 11 and the delay frame 12. The delay frame 12 can be supported by the first spring. The free end of the elastic telescopic rod 10 is fixedly connected to the elevating device 3. The vision detector 5 adopts a curved surface scanning technology. The curved surface scanning technology imitates the human eye and uses two (or more) cameras to simultaneously capture an object from different perspectives. By matching the corresponding points in the two images and using parallax to calculate the three-dimensional coordinates, the vision detector 5 continuously scans the upper surface of the pop-top can lid. If the sealing performance is not good and the internal pressure of the bottle is abnormal, it will cause a sudden change in the pop-top lid, thereby determining whether the lid seal is qualified.

[0025] A sealing ring 1 is provided between the free end of the elastic telescopic rod 10 and the fixed end of the elastic telescopic rod 10, and the sealing ring 1 can improve the sealing effect between the free end of the elastic telescopic rod 10 and the fixed end of the elastic telescopic rod 10. Liquid is provided inside the hollow plate 7, and a sealing ring 2 is provided between the hollow plate 7 and the connecting plate 1 8. The sealing effect between the hollow plate 7 and the connecting plate 1 8 can be improved by the sealing ring 2. An exhaust hole is provided at the bottom of the circumferential surface of the elastic telescopic rod 10, and a mesh screen plate is fixedly installed inside the exhaust hole. The mesh screen plate can prevent foreign matter from entering the interior of the elastic telescopic rod 10. The conveyor line is used to convey the cans, and the rejector is used to reject unqualified cans. Rejection, the control cabinet is used to control the movement of the conveyor line. A positioning sensor is arranged inside the visual inspection instrument 5. The can passes through the positioning sensor, and the arrival of the can is detected. The identification number of the can and the current encoder signal are recorded by the control unit. The positioning sensor triggers the visual inspection instrument 5 to collect the current can cap image, and transmits the image to the image processor through the network. The image processor processes and analyzes the received image, and transmits the processing result to the human-machine interface for dynamic display on the one hand, and to the control unit on the other hand. After receiving the unqualified bottle cap signal, the control unit notifies the rejector to reject the unqualified cans with the corresponding identification number online.

[0026] A sealing ring three is arranged between the hollow plate 7 and the connecting plate 2 9, and the sealing ring three can improve the sealing effect between the hollow plate 7 and the connecting plate 2 9. The connecting plate 1 8 is in contact with the fixing frame 6. A spring two is arranged between the hollow plate 7 and the connecting plate 1 8, and the connecting plate 1 8 can be supported by the spring two. A spring three is arranged between the hollow plate 7 and the connecting plate 2 9, and one end of the spring three is fixed to the inner wall of the hollow plate 7, and the other end of the spring three is fixed to the left side of the connecting plate 2 9. The connecting plate 2 9 can be supported by the spring three. The connecting plate 2 9 moves toward the direction close to the hollow plate 7 to break away from the contact with the visual detector 5 and release the obstruction of the lens of the visual detector 5. By blocking the lens, the ambient stray light can be prevented from directly hitting the lens, and the sensitivity attenuation caused by the visual detector 5 being exposed to strong light for a long time in the non-detection state can be prevented, ensuring that the visual detector 5 can quickly restore the high-precision testing capability after restarting.

[0027] During operation, the lifting device 3 is started to drive the driving device 4 to move downward, and the driving device 4 moves downward to drive the visual detector 5 to move downward. The visual detector 5 moves downward to drive the hollow plate 7 to move downward, and the hollow plate 7 moves downward to drive the connecting plate 8 to move downward. The connecting plate 8 moves downward to break away from the contact with the fixed frame 6. After the connecting plate 8 breaks away from the contact with the fixed frame 6, the connecting plate 8 moves upward and resets under the elastic force of the spring. The connecting plate 8 moves upward and resets under the action of negative pressure. The liquid inside the hollow plate 7 will flow upward. The upward flow of the liquid inside the hollow plate 7 will attract the connecting plate 2 9 to move toward the bottom direction of the connecting plate 8 under the condition of negative pressure. At the same time, the elastic force of the liquid flow spring 3 inside the hollow plate 7 will also pull the connecting plate 2 9 to move toward the bottom direction of the connecting plate 8. The connecting plate 29 moves in the direction close to the connecting plate 1 8 to break away from the contact with the visual detector 5 and release the blocking of the lens of the visual detector 5. At the same time, the lifting device 3 moves downward, driving the free end of the elastic telescopic rod 10 to move downward. The downward movement of the free end of the elastic telescopic rod 10 squeezes the gas inside the elastic telescopic rod 10. The gas inside the elastic telescopic rod 10 can only slowly flow out of the elastic telescopic rod 10 through the delay hole 14 and the mesh screen plate due to the squeezing of the free end of the elastic telescopic rod 10. The gas inside the elastic telescopic rod 10 slowly flows out of the elastic telescopic rod 10, causing the free end of the elastic telescopic rod 10 to move slowly downward. The free end of the elastic telescopic rod 10 moves slowly downward, driving the lifting device 3 and the driving device 4 to slowly descend. The driving device 4 slowly descends, driving the visual inspection instrument 5 to slowly descend. The visual inspection instrument 5 slowly descends to scan the can cap. The visual inspection instrument 5 adopts curved surface scanning technology to continuously scan the upper surface of the can cap. If the sealing is not good and the internal pressure of the bottle is abnormal, the can cap will produce a sudden change, thereby judging whether the sealing of the cap is qualified.

[0028] Embodiment 2: See also Figure 1-9 On the basis of Example 1, in this embodiment, a barrier component for preventing liquid from splashing inside the can is arranged inside the lifting device 3, and a fill light component is arranged on the surface of the detection frame 2. The barrier component includes a leak-stop hole 161, a leak-stop plate 162, a rubber plate 164, a support rod 165 and a hanging rod 166. The leak-stop hole 161 is opened at the bottom end of the lifting device 3, the leak-stop plate 162 is slidably installed on the inner wall of the leak-stop hole 161, the rubber plate 164 is fixedly installed at the bottom of the leak-stop plate 162, the support rod 165 is fixedly installed at the bottom of the inner wall of the detection frame 2, and the hanging rod 166 is fixedly installed at the bottom of the rubber plate 164. For the high-pressure environment inside the gas-containing can, the elastic buffering and sealing performance of the rubber plate 164 can resist the impact of liquid splashing, prevent the circuit of the visual detector 5 from short circuit, and extend the service life of the visual detector 5.

[0029] The leakage prevention plate 162 is slidably connected to the support rod 165. A leakage prevention spring 163 is arranged between the leakage prevention hole 161 and the leakage prevention plate 162. When the leakage prevention plate 162 moves downward, it squeezes the leakage prevention spring 163. The leakage prevention spring 163 deforms and stores energy under the extrusion of the leakage prevention plate 162. After the leakage prevention plate 162 disengages from the contact with the U-shaped rod 15, the leakage prevention spring 163 can drive the leakage prevention plate 162 to reset. The rubber plate 164 contacts the lifting device 3. The leakage prevention plate 162 moves downward and continuously contacts the support rod 165 and is supported by the support rod 165. The leakage prevention plate 162 moves downward and continuously contacts the support rod 165 and is stressed, which can ensure that the force on the leakage prevention plate 162 is evenly distributed, avoid deformation caused by excessive local pressure, and thus maintain a stable sealing and blocking effect.

[0030] The supplementary lighting assembly includes a stop plate 171, a lead screw 172, and a baffle 173. The stop plate 171 is slidably installed at the bottom of the detection frame 2. The lead screw 172 is rotatably installed on one side of the detection frame 2 close to the U-shaped rod 15. The baffle 173 is slidably installed on one side of the detection frame 2 close to the lead screw 172. The baffle 173 is threadedly connected to the lead screw 172. The rotation of the lead screw 172 can be restricted by the stop plate 171.

[0031] The supplementary lighting assembly further includes a retaining frame 174, a retaining rod 175, a retaining disc 176, and a lighting device. The retaining frame 174 is fixedly installed at the bottom of the baffle 173. The retaining rod 175 is fixedly installed on one side of the lead screw 172 close to the stop plate 171. The retaining disc 176 is fixedly installed on the circumferential surface of the retaining rod 175. The lighting device is arranged on the inner wall of the retaining frame 174. For aluminum cans of different sizes and shapes, the lighting angle can be flexibly adjusted to eliminate shadow and reflection interference, avoid missed detection caused by uneven illumination, and thus ensure the reliability of the test results.

[0032] A fourth spring is arranged between the stop plate 171 and the detection frame 2. When the stop plate 171 moves toward the retaining disc 176, it squeezes the fourth spring. The fourth spring deforms and stores energy under the extrusion of the stop plate 171. After the stop plate 171 disengages from the contact with the suspension rod 166, the fourth spring can drive the stop plate 171 to reset. A limiting groove is formed on the circumferential surface of the retaining disc 176. One side of the stop plate 171 close to the suspension rod 166 is set as an inclined surface, and one side of the stop plate 171 close to the retaining disc 176 is set as an arc surface. The non-rotation of the retaining rod 175 makes the lead screw 172 unable to rotate. The non-rotation of the lead screw 172 makes the baffle 173 and the retaining frame 174 unable to move horizontally. By restricting the movement of the retaining frame 174, the offset of the supplementary lighting position caused by the accidental movement of the lighting device can be avoided, further preventing the appearance of reflection changes in the detection image and maintaining the consistency of the defect recognition of the aluminum can pull tab.

[0033] During operation, the vision detector 5 moves downward, driving the U-shaped rod 15 to move downward. The U-shaped rod 15 moves downward and contacts the leak-proof plate 162, squeezing the leak-proof plate 162. The leak-proof plate 162 moves downward under the extrusion of the U-shaped rod 15. The downward movement of the leak-proof plate 162 drives the rubber plate 164 to move downward. The rubber plate 164 moves downward to block the holes at the bottom of the detection frame 2, thereby preventing the liquid inside the can body from splashing into the detection frame 2 due to the breakage of the can with abnormal pressure. At the same time, the leak-proof plate 162 moves downward and continuously contacts the support rod 165 and is supported by the support rod 165, thereby preventing the leak-proof plate 162 from deforming due to uneven force and affecting the effect of blocking the detection frame 2. When the vision detector 5 moves upward to reset, it drives the U-shaped rod 15 to move upward. The U-shaped rod 15 moves upward and disengages from the contact with the leak-proof plate 162. After the leak-proof plate 162 disengages from the contact with the U-shaped rod 15, the leak-proof plate 162 moves upward under the elastic force of the leak-proof spring 163. The upward movement of the leak-proof plate 162 to reset drives the rubber plate 164 to move upward to restore the initial position.

[0034] The downward movement of the rubber plate 164 drives the suspension rod 166 to move downward. The suspension rod 166 moves downward and contacts the inclined surface of the stop plate 171, squeezing the stop plate 171. The stop plate 171 moves in the direction close to the retaining plate 176 under the extrusion of the suspension rod 166. The stop plate 171 moves in the direction close to the retaining plate 176 and contacts the limiting groove of the retaining plate 176, limiting the retaining plate 176. The retaining plate 176 cannot rotate, so that the blocking rod 175 cannot rotate. The blocking rod 175 cannot rotate, so that the lead screw 172 cannot rotate. The lead screw 172 cannot rotate, so that the baffle plate 173 and the bracket 174 cannot move horizontally. The bracket 174 cannot move horizontally, so that the lighting device cannot be adjusted when the vision detector 5 is operating. A servo motor is provided on the front side of the lead screw 172 and its output end is fixed to the lead screw 172. By starting the rotation of the lead screw 172, the baffle plate 173 and the bracket 174 can be driven to move. The movement of the bracket 174 drives the lighting device to move to adjust the supplementary lighting position of the lighting device.

[0035] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0036] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An on-line detection device for pop-top rings of canned drinks on an assembly line, comprising a frame-type detection platform (1), characterized in that: It also includes a detection frame (2), the detection frame (2) is fixedly installed at the bottom of the front side of the frame-type detection platform (1), a conveyor line is arranged at the rear side of the frame-type detection platform (1), a rejector is arranged at the front side of the conveyor line, a control cabinet is arranged on the right side of the frame-type detection platform (1), a lifting device (3) is arranged inside the detection frame (2), a driving device (4) is fixedly installed on the surface of the lifting device (3), a vision detector (5) is fixedly installed at the bottom of the driving device (4), a fixing frame (6) is fixedly installed at the bottom of the inner wall of the detection frame (2), a hollow plate (7) is fixedly installed at the bottom of the vision detector (5), a connecting plate one (8) is slidably installed on the inner wall of the hollow plate (7), a connecting plate two (9) is slidably installed on the inner wall of the hollow plate (7), an elastic telescopic rod (10) is arranged on the surface of the lifting device (3), an energy absorption plate (11) is fixedly installed on the inner wall of the elastic telescopic rod (10), a delay frame (12) slidably penetrates through the upper and lower walls of the energy absorption plate (11), an energy absorption hole (13) is opened at the top of the energy absorption plate (11), a delay hole (14) is opened at the top of the delay frame (12), a partition component for preventing the liquid inside the aluminum can from splashing is arranged inside the lifting device (3), a supplementary lighting component is arranged on the surface of the detection frame (2), and the vision detector (5) is used to perform a fluid tightness test on the pull ring of the aluminum can by applying light.

2. The on-line detection device for pop-top cans of a production line according to claim 1, characterized in that: A U-shaped rod (15) is fixedly installed at the top of the vision detector (5), a first spring is arranged between the energy absorption plate (11) and the delay frame (12), the energy absorption hole (13) is in contact with the delay hole (14), and the free end of the elastic telescopic rod (10) is fixedly connected to the lifting device (3).

3. An on-line detection device for pop-top can pull tabs on a production line according to claim 2, characterized in that: A first sealing ring is arranged between the free end and the fixed end of the elastic telescopic rod (10), a liquid is arranged inside the hollow plate (7), a second sealing ring is arranged between the hollow plate (7) and the connecting plate one (8), an exhaust hole is opened at the bottom of the circumferential surface of the elastic telescopic rod (10), and a mesh sieve plate is fixedly installed inside the exhaust hole.

4. An on-line detection device for pop-top rings of a production line according to claim 3, characterized in that: A third sealing ring is arranged between the hollow plate (7) and the connecting plate two (9), the connecting plate one (8) abuts against the fixing frame (6), a second spring is arranged between the hollow plate (7) and the connecting plate one (8), and a third spring is arranged between the hollow plate (7) and the connecting plate two (9).

5. An on-line detection device for pop-top can pull rings on a production line according to claim 4, characterized in that: The partition component includes a leakage prevention hole (161), a leakage prevention plate (162), a rubber plate (164), a support rod (165) and a suspension rod (166), the leakage prevention hole (161) is opened at the bottom end of the lifting device (3), the leakage prevention plate (162) is slidably installed on the inner wall of the leakage prevention hole (161), the rubber plate (164) is fixedly installed at the bottom of the leakage prevention plate (162), the support rod (165) is fixedly installed at the bottom of the inner wall of the detection frame (2), and the suspension rod (166) is fixedly installed at the bottom of the rubber plate (164).

6. The on-line detection device for the pull tabs of canned drinks on a production line according to claim 5, characterized in that: The leak-proof plate (162) is slidably connected to the support rod (165). A leak-proof spring (163) is arranged between the leak-proof hole (161) and the leak-proof plate (162). The rubber plate (164) contacts the lifting device (3).

7. The on-line detection device for pop-top can pull rings of a production line according to claim 6, wherein: The supplementary lighting assembly includes a stop plate (171), a lead screw (172), and a baffle (173). The stop plate (171) is slidably installed at the bottom of the detection frame (2). The lead screw (172) is rotatably installed on one side of the detection frame (2) close to the U-shaped rod (15). The baffle (173) is slidably installed on one side of the detection frame (2) close to the lead screw (172). The baffle (173) is threadedly connected to the lead screw (172).

8. An on-line detection device for pop-top can pull rings on a production line according to claim 7, characterized in that: The supplementary lighting assembly further includes a retaining frame (174), a retaining rod (175), a retaining disc (176), and a lighting device. The retaining frame (174) is fixedly installed at the bottom of the baffle (173). The retaining rod (175) is fixedly installed on one side of the lead screw (172) close to the stop plate (171). The retaining disc (176) is fixedly installed on the circumferential surface of the retaining rod (175). The lighting device is arranged on the inner wall of the retaining frame (174).

9. An online detection device for pop-top can pull tabs on a production line according to claim 8, characterized in that: A fourth spring is arranged between the stop plate (171) and the detection frame (2). A limiting groove is formed on the circumferential surface of the retaining disc (176). One side of the stop plate (171) close to the suspension rod (166) is set as an inclined surface. One side of the stop plate (171) close to the retaining disc (176) is set as an arc surface.

Images