A double-side light inspection device for can lid

Abstract

The utility model discloses a kind of tin lid double-sided light detection devices, the utility model relates to tin lid flatness detection technical field.This tin lid double-sided light detection device includes support frame, the upper portion of support frame is provided with the detection mechanism for detecting bottle cap flatness, the detection mechanism includes: conveying assembly, including the limiting roller and magnetic roller of movable installation between support frame, the outer side of limiting roller and magnetic roller is embedded with conveying belt, the "U" shape structure of limiting groove forms one-way channel, only allows single tin lid to enter in turn overturning transition area, avoid multiple tin lid to rush into magnetic force action area simultaneously and cause stacking, when tin lid exceeds upper magnetic tile magnetic force range, it will single in turn fall on inclined plane conveying belt, the adsorption of magnetic plate will each falling tin lid be individually fixed on conveying belt, prevent subsequent tin lid and front workpiece superposition, ensure that industrial camera can carry out independent, orderly detection to both sides of each tin lid.

Description

Technical Field

[0001] This utility model relates to the field of can lid flatness detection technology, specifically a double-sided optical inspection device for can lids. Background Technology

[0002] In industrial quality inspection, illumination-based visual inspection of metal surface cracks is a non-contact, highly efficient, and highly reliable non-destructive testing technology. Its core principle is to highlight the optical differences (such as grayscale, contrast, and reflectivity) between cracks and normal areas on a metal surface through specific illumination schemes, and then combine this with machine vision algorithms to achieve automatic crack identification, location, and quantitative analysis. This technology is widely used in the quality control of critical metal components such as automotive parts, aerospace components, pressure vessels, rails, and bearings.

[0003] The existing utility model patent with publication number CN207482827U discloses a dough-turning machine, belonging to the technical field of dough-turning machines. It includes a frame, a conveying mechanism mounted on the frame, and a lifting mechanism at the connection between the frame and the conveying mechanism. The conveying mechanism includes an upper conveying mechanism and a lower conveying mechanism. The upper conveying mechanism includes a drive motor I connected to a drive wheel I, which is equipped with a magnetic device. The drive wheel I is connected to a driven wheel I via an upper conveyor belt. The lower conveying mechanism is located below the upper conveying mechanism. The running direction of the upper conveying mechanism is the same as or opposite to that of the lower conveying mechanism. This utility model can completely replace manual dough turning, avoids frictional resistance during conveyor belt movement, avoids increasing motor running resistance, and is compatible with existing deburring equipment, avoiding the need to redesign deburring equipment.

[0004] The aforementioned flipping machine flips workpieces using two conveyor belts and a magnetic device. During operation, to prevent the magnetic force from weakening due to distance, the distance between the two conveyor belts should be reduced. If the workpiece conveying distance is short, the workpieces may pile up when they are attracted to the upper conveyor belt by the magnetic device from the lower conveyor belt, affecting the orderly conveying of workpieces. Furthermore, since the workpieces have a certain suspension time during the attraction process, they may deviate from the center of the conveyor belt, affecting subsequent processing or inspection of the workpieces. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a double-sided optical inspection device for can lids, which solves the problems of workpieces deviating from the center of the conveyor belt during the workpiece adsorption and flipping process, and workpieces stacking due to magnetic force.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A double-sided optical inspection device for can lids includes a support frame, and a detection mechanism for detecting the flatness of the can lid is provided above the support frame. The detection mechanism includes: The conveying assembly includes a limiting roller and a magnetic roller movably mounted between support frames. A conveyor belt is fitted onto the outer sides of the limiting roller and the magnetic roller. A mounting frame is fixedly mounted between the support frames. A magnetic plate is fixedly mounted on one side of the mounting frame. A limiting shaft is movably mounted inside the magnetic roller. A limiting tube is fixedly mounted on one side of the limiting shaft. A limiting frame is fixedly mounted on the outer side of the limiting shaft. A magnetic tile is fixedly mounted on the outer side of the limiting frame. A motor is provided at one end of the magnetic roller. The optical inspection component, located above the support frame, is used to inspect the flatness of the can lid.

[0007] Preferably, the optical inspection component includes a limiting groove fixedly installed between the support frames, a guide rail fixedly installed at the front end of the limiting groove, and a fixing frame and a connecting frame fixedly installed above the guide rail and the support frame, with an industrial camera fixedly installed at the center of the fixing frame and the connecting frame.

[0008] Preferably, the support frame is symmetrically arranged on the left and right sides of the detection mechanism, and there are two conveyor belts, which are respectively arranged at the top and front of the support frame, and the conveyor belt at the top of the support frame is a horizontal structure.

[0009] Preferably, the front side of the front conveyor belt of the support frame has an inclined structure, the limiting roller is installed at the rear end of the top conveyor belt of the support frame and the bottom end of the front conveyor belt of the support frame, and the magnetic roller is set at the front end of the top conveyor belt of the support frame and the rear end and bend of the front conveyor belt of the support frame.

[0010] Preferably, the magnetic roller and the limiting shaft are rotatably connected, the limiting shaft is fixedly connected to the support frame through a limiting tube, the magnetic tile is fixedly connected to the limiting shaft through the limiting frame, and the motor shaft is fixedly connected to one end of the magnetic roller.

[0011] Preferably, the center of the limiting groove is provided with a "U"-shaped limiting structure, the two ends of the limiting groove are fixedly connected to the two side support frames, the upper and lower sides of the limiting groove do not contact the conveyor belt, the guide rail is mirror-symmetrically installed above the two side support frames, and the front end of the guide rail is provided with an annular structure that matches the moving path of the conveyor belt, and the bottom of the guide rail does not contact the conveyor belt.

[0012] Beneficial effects This invention provides a double-sided optical inspection device for can lids. Compared with the prior art, it has the following advantages: (1) The double-sided optical inspection device for can lids combines precise control of magnetic force range with unidirectional design of conveying path to prevent workpiece stacking from the source and ensure orderly double-sided optical inspection. On the one hand, the magnetic tiles inside the magnetic roller are fixed to the limiting shaft by the limiting frame, and their magnetic coverage is strictly limited to a local area on the surface of the conveyor belt. It only generates an attraction force on the single can lid that is currently passing through the magnetic roller, and the motor drives the conveyor belt to maintain a uniform speed, so that the can lids are arranged sequentially and at intervals along the conveyor belt, and multiple can lids will not be attracted to the same area simultaneously due to excessive magnetic coverage. On the other hand, the "U"-shaped structure of the limiting groove forms a one-way channel, allowing only a single can lid to enter the flipping transition area in sequence, avoiding multiple can lids from rushing into the magnetic action area at the same time and causing stacking. In addition, the inclined structure of the lower conveyor belt cooperates with the magnetic plate. When the can lid exceeds the magnetic range of the upper magnetic tile, it will fall onto the inclined conveyor belt one by one. The attraction force of the magnetic plate will fix each falling can lid individually on the conveyor belt, preventing subsequent can lids from overlapping with the workpiece in front, and ensuring that the industrial camera can independently and orderly detect both sides of each can lid.

[0013] (2) The double-sided optical inspection device for can lids, through the setting of guide rails, is installed above the support frame. The front end of the guide rails is perfectly matched with the moving path of the conveyor belt. During the entire process of the can lid being transported from the upper conveyor belt to the lower conveyor belt, the guide rails form lateral constraints on the can lid from both sides, forcing it to move along the center track of the conveyor belt, avoiding deviation due to vibration or slight uneven magnetic force during transport. Secondly, the "U"-shaped limiting structure of the limiting groove plays a role in the transition stage of the can lid flipping. When the can lid turns from the upper conveyor belt to the lower conveyor belt, the "U"-shaped structure wraps around the edge of the can lid, limiting its relative position with the conveyor belt, preventing it from deviating from the center due to changes in the force angle during flipping. At the same time, the magnetic plate on the mounting frame will generate directional adsorption force after the can lid flips and falls, firmly fixing it in the center area of ​​the lower conveyor belt. The combination of multiple structures ensures that the can lid can be accurately within the shooting field of the industrial camera when inspecting both sides, avoiding missed inspection or detection error due to deviation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the conveyor belt installation structure of this utility model; Figure 3 This is a schematic diagram of the magnetic tile installation structure of this utility model; Figure 4 This is a schematic diagram of the guide rail mounting structure of this utility model; In the diagram: 1. Support frame; 2. Detection mechanism; 21. Conveying assembly; 211. Limiting roller; 212. Magnetic roller; 213. Conveyor belt; 214. Mounting frame; 215. Magnetic plate; 216. Limiting shaft; 217. Limiting tube; 218. Limiting frame; 219. Magnetic tile; 2110. Motor; 22. Optical inspection assembly; 221. Limiting groove; 222. Guide rail; 223. Fixing frame; 224. Connecting frame; 225. Industrial camera. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides a technical solution: a double-sided optical inspection device for can lids, including a support frame 1, and a detection mechanism 2 for detecting the flatness of the can lid is arranged above the support frame 1. The detection mechanism 2 includes: The conveying assembly 21 includes a limiting roller 211 and a magnetic roller 212 movably mounted between support frames 1. A conveyor belt 213 is fitted onto the outer sides of the limiting roller 211 and the magnetic roller 212. A mounting frame 214 is fixedly mounted between the support frames 1. A magnetic plate 215 is fixedly mounted on one side of the mounting frame 214. A limiting shaft 216 is movably mounted inside the magnetic roller 212. A limiting tube 217 is fixedly mounted on one side of the limiting shaft 216. A limiting frame 218 is fixedly mounted on the outer side of the limiting shaft 216. A magnetic tile 219 is fixedly mounted on the outer side of the limiting frame 218. A motor 2110 is provided at one end of the magnetic roller 212. The support frames 1 are symmetrically arranged on the left and right sides of the detection mechanism 2. There are two conveyor belts 213, which are respectively set on the support frames 1. The top of the support frame 1 and the front side of the support frame 1 are connected. The conveyor belt 213 at the top of the support frame 1 is a horizontal structure, and the front side of the conveyor belt 213 at the front of the support frame 1 is a sloping structure. The limiting roller 211 is installed at the rear end of the top conveyor belt 213 and the bottom end of the front conveyor belt 213. The magnetic roller 212 is set at the front end of the top conveyor belt 213 and the rear end and bend of the front conveyor belt 213. The magnetic roller 212 and the limiting shaft 216 are rotatably connected. The limiting shaft 216 is fixedly connected to the support frame 1 through the limiting tube 217. The magnetic tile 219 is fixedly connected to the limiting shaft 216 through the limiting frame 218. The rotating shaft of the motor 2110 is fixedly connected to one end of the magnetic roller 212.

[0017] Specifically, the limiting roller 211 and the magnetic roller 212 can limit the position of the conveyor belt 213. The magnetic tiles 219 inside the magnetic roller 212 provide magnetic force to attract the can lids above the conveyor belt 213. Since the magnetic roller 212 and the support frame 1 are rotatably connected, and the limiting shaft 216 is fixedly connected to the support frame 1 through the limiting tube 217, when the motor 2110 drives the magnetic roller 212 to rotate, the magnetic roller 212 and the limiting shaft 216 rotate relative to each other. The magnetic roller 212 drives the conveyor belt 213 to rotate, and the conveyor belt 213 can transport the can lids. The can lids can be attracted to the magnetic roller 213. Under the influence of the tile 219, the front end of the top conveyor belt 213 of the support frame 1 moves to the bottom of the conveyor belt 213, moves backward, and falls onto the lower conveyor belt 213 after exceeding the magnetic influence range of the tile 219, completing the flipping, and is restricted on the lower conveyor belt 213 by the magnetic plate 215. The mounting frame 214 can restrict the position of the magnetic plate 215. The magnetic plate 215 at the center of the upper conveyor belt 213 and the inclined surface of the lower conveyor belt 213 can restrict the position of the can lid. The magnetic plate 215 below the top horizontal structure of the lower conveyor belt 213 can restrict the position of the can lid after it flips.

[0018] The optical inspection component 22 is positioned above the support frame 1 for flatness inspection of the can lid. The optical inspection component 22 includes a limiting groove 221 fixedly installed between the support frames 1. A guide rail 222 is fixedly installed at the front end of the limiting groove 221. The optical inspection component 22 also includes a fixing frame 223 and a connecting frame 224 fixedly installed above the guide rail 222 and the support frame 1. An industrial camera 225 is fixedly installed at the center of the fixing frame 223 and the connecting frame 224. A "U"-shaped limiting structure is provided at the center of the limiting groove 221. The two ends of the limiting groove 221 are fixedly connected to the two side support frames 1. The upper and lower sides of the limiting groove 221 do not contact the conveyor belt 213. The guide rail 222 is mirror-symmetrically installed above the two side support frames 1. The front end of the guide rail 222 is provided with an annular structure that matches the moving path of the conveyor belt 213. The bottom of the guide rail 222 does not contact the conveyor belt 213.

[0019] Specifically, the guide rail 222 enables the can lid to be positioned at the center of the conveyor belt 213, and the limiting groove 221 restricts the position between the can lid and the conveyor belt 213 during the can lid flipping process, limiting the can lid to be positioned at the center of the lower conveyor belt 213 after flipping. The industrial camera 225 integrates a blue LED and is linked to the shutter trigger signal of the industrial camera 225 to detect the flatness of the can lid when it passes under the industrial camera 225.

[0020] Specifically, the model of motor 2110 is MSMF042L1U, and the model of industrial camera 225 is MV-CA050-10GC. In addition, all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0021] During operation, the can lid first enters the conveyor belt 213 at the top of the support frame 1. The support frame 1 is symmetrically arranged on the left and right sides of the detection mechanism 2. The conveyor belt 213 is a horizontal structure. The magnetic roller 212 is set at the front end of the conveyor belt 213 at the top of the support frame 1. A limiting shaft 216 is movably installed inside the magnetic roller 212. A limiting tube 217 is fixedly installed on one side of the limiting shaft 216 and is fixedly connected to the support frame 1 through the limiting tube 217. A limiting frame 218 is fixedly installed on the outside of the limiting shaft 216. A magnetic tile 219 is fixedly installed on the outside of the limiting frame 218. After the motor 2110 at one end of the magnetic roller 212 is started, its shaft drives the magnetic roller 212 to rotate around the limiting shaft 216, thereby driving the outer embedded conveyor belt 213 to run. The magnetic force generated by the magnetic tile 219 stably attracts the can lid to the surface of the conveyor belt 213. At the same time, the limiting roller 211 is installed at the rear end of the conveyor belt 213 at the top of the support frame 1 to help the conveyor belt 213 maintain stable operation.

[0022] As the can lid is conveyed forward by the top conveyor belt 213, an industrial camera 225 (integrated with a blue LED and linked to its own shutter trigger signal), fixed by a fixing frame 223 and a connecting frame 224 (fixed above the guide rail 222 and support frame 1), detects the flatness of the upward-facing side of the can lid. After the detection is completed, the can lid continues to be conveyed to the front end of the top conveyor belt 213 and enters the limiting groove 221 (with a "U" shaped limiting structure in the center and no contact between the upper and lower sides and the conveyor belt 213) fixedly installed between the support frames 1. Under the continuous magnetic force of the magnetic tile 219, it turns downward and moves backward with the conveyor belt 213.

[0023] When the can lid moves beyond the magnetic coverage of the magnetic tile 219, it falls naturally onto the conveyor belt 213 (the front side of the conveyor belt 213 has an inclined structure) on the front side of the support frame 1. The bottom end of the conveyor belt 213 is equipped with a limit roller 211, and the rear end and the bend are equipped with magnetic rollers 212. At the same time, a magnetic plate 215 is fixed on one side of the mounting frame 214 fixed between the support frames 1. The magnetic force generated by the magnetic plate 215 attracts the falling can lid to the surface of the lower conveyor belt 213, completing the flipping of the can lid (the side that was originally facing down turns to face up).

[0024] After being flipped over, the can lid is conveyed forward by the lower conveyor belt 213 (sloping structure). The guide rail 222 is mirror-symmetrically installed above the support frames 1 on both sides. Its front end is provided with an annular structure that matches the movement path of the conveyor belt 213 (the bottom does not contact the conveyor belt 213), which guides the can lid from both sides to keep it in the center position of the conveyor belt 213. Subsequently, the industrial camera 225, which is installed above the inclined structure of the lower conveyor belt 213 by the fixing frame 223 and the connecting frame 224, performs flatness detection on the other side of the can lid after it is flipped over, and finally completes the double-sided optical inspection process of the can lid.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-sided optical inspection device for can lids, comprising a support frame (1), characterized in that: A detection mechanism (2) for detecting the flatness of the bottle cap is provided above the support frame (1). The detection mechanism (2) includes: The conveying assembly (21) includes a limiting roller (211) and a magnetic roller (212) movably mounted between the support frames (1). A conveyor belt (213) is fitted onto the outer sides of the limiting roller (211) and the magnetic roller (212). A mounting frame (214) is fixedly mounted between the support frames (1). A magnetic plate (215) is fixedly mounted on one side of the mounting frame (214). A limiting shaft (216) is movably mounted inside the magnetic roller (212). A limiting tube (217) is fixedly mounted on one side of the limiting shaft (216). A limiting frame (218) is fixedly mounted on the outer side of the limiting shaft (216). A magnetic tile (219) is fixedly mounted on the outer side of the limiting frame (218). A motor (2110) is provided at one end of the magnetic roller (212). The optical inspection component (22) is set above the support frame (1) for inspecting the flatness of the can lid.

2. The double-sided optical inspection device for can lids according to claim 1, characterized in that: The optical inspection component (22) includes a limiting groove (221) fixedly installed between the support frame (1), and a guide rail (222) fixedly installed at the front end of the limiting groove (221). The optical inspection component (22) also includes a fixing frame (223) and a connecting frame (224) fixedly installed above the guide rail (222) and the support frame (1). An industrial camera (225) is fixedly installed at the center of the fixing frame (223) and the connecting frame (224).

3. The double-sided optical inspection device for can lids according to claim 1, characterized in that: The support frame (1) is symmetrically arranged on the left and right sides of the detection mechanism (2). There are two conveyor belts (213), which are respectively arranged at the top of the support frame (1) and the front side of the support frame (1). The conveyor belt (213) at the top of the support frame (1) is a horizontal structure.

4. The double-sided optical inspection device for can lids according to claim 1, characterized in that: The front side of the front conveyor belt (213) of the support frame (1) has an inclined structure. The limiting roller (211) is installed at the rear end of the top conveyor belt (213) of the support frame (1) and the bottom end of the front conveyor belt (213) of the support frame (1). The magnetic roller (212) is set at the front end of the top conveyor belt (213) of the support frame (1) and the rear end and bend of the front conveyor belt (213) of the support frame (1).

5. The double-sided optical inspection device for can lids according to claim 1, characterized in that: The magnetic roller (212) and the limiting shaft (216) are rotatably connected. The limiting shaft (216) is fixedly connected to the support frame (1) through the limiting tube (217). The magnetic tile (219) is fixedly connected to the limiting shaft (216) through the limiting frame (218). The rotating shaft of the motor (2110) is fixedly connected to one end of the magnetic roller (212).

6. The double-sided optical inspection device for can lids according to claim 2, characterized in that: The center of the limiting groove (221) is provided with a "U"-shaped limiting structure. The two ends of the limiting groove (221) are fixedly connected to the two side support frames (1). The upper and lower sides of the limiting groove (221) do not contact the conveyor belt (213). The guide rail (222) is mirror-symmetrically installed above the two side support frames (1). The front end of the guide rail (222) is provided with an annular structure that matches the moving path of the conveyor belt (213). The bottom of the guide rail (222) does not contact the conveyor belt (213).

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