LED bracket automatic full inspection machine and LED bracket automatic full inspection method

Abstract

The present invention discloses an automatic full inspection machine for LED brackets and an automatic full inspection method for LED brackets. The equipment includes a frame, an LED bracket conveying device, an LED bracket detection device, an LED bracket defective product offline device, an LED bracket pad paper temporary storage device and a control device. The LED bracket conveying device is used to convey the LED bracket along the LED bracket conveying direction; the LED bracket detection device includes a light source and a shooting device, the shooting device is used to take pictures of the LED bracket, and the control device grades the incoming LED bracket according to the pictures taken by the shooting device; the LED bracket defective product offline device is used to perform offline processing on defective products according to the grading information of the incoming LED bracket; the LED bracket pad paper temporary storage device is used to automatically pad paper packaging processing for qualified LED brackets. The present invention can automatically grade the LED brackets according to the grading information, and automatically stack and package qualified products.

Description

Technical Field

[0001] The present application belongs to the technical field of LED bracket processing equipment, and specifically relates to an LED bracket automatic full inspection machine and an LED bracket automatic full inspection method. Background Art

[0002] Packaged RGB three-color LED lamp beads are widely used outdoors, in advertising light boxes, display screens and other places. The RGB three-color light source is composed of red (R), green (G), and blue (B) color patches. Conventional LED lamp beads on the market include LED7070 (outer dimensions are 7.0mm*7.0mm*1.1mm), LED5050 (outer dimensions are 5.0mm*5.0mm*1.6mm), LED3535 (outer dimensions are 3.5mm*3.5mm*2mm), and miniature models (outer dimensions do not exceed 2.0mm), etc.

[0003] The LED bracket is the base of the LED lamp bead before packaging. On the basis of the LED bracket, the chip is fixed in, the positive and negative electrodes are welded, and then the packaging glue is used to package it once. LED brackets are generally produced in batches. Several rows and columns of conductive brackets are processed on the copper plate of the material strip (currently there are also iron materials, aluminum materials, etc.) as conductive terminals (the conductive terminals are still part of the copper plate of the material strip at this time), and then placed in the injection molding machine to inject the plastic body. After the plastic body and the conductive terminals are embedded and formed, the solder feet of each conductive terminal need to be bent. In the bending step, the conductive terminals are punched out from the copper plate of the material strip and bent.

[0004] LED lamp beads are widely used in the production of display screen backlights. With the development of science and technology and economy at home and abroad, the types, models and quantities of LED lamp beads are increasing, and the requirements for their outer surface size parameters and surface perfection are also getting higher and higher. For LED lamp bead manufacturers, the inspection process of product appearance shape, size and surface defects occupies an important position in the entire process, occupying a large amount of manpower, site and financial resources.

[0005] Due to the mass production of LED brackets, the LED brackets often have glue shortage (plastic defects, such as the plastic is not filled, pits appear on the surface of the plastic body) or plastic falling off (referred to as missing PIN). At present, the existing technology for defect detection of LED brackets is generally a manual detection method, in which experienced inspection personnel make quick judgments on the products on the line, or conduct manual sampling after a process. This method is not only labor-intensive and inefficient, but also has poor accuracy, and the probability of missed detection and false detection is also high. It affects the improvement of overall product quality and the reduction of production costs.

[0006] Some LED manufacturers have improved their production process and adopted machine vision to automatically inspect LED brackets. Each LED bracket is placed on a conveyor in turn, and a CCD camera is used to take pictures to detect the lack of glue in the LED bracket. Then, defective products are manually sorted out, and qualified products are packaged. This manual sorting method of processing LED brackets is labor-intensive and inefficient, which affects the improvement of overall product quality and the reduction of production costs. Summary of the invention

[0007] In order to solve the above technical problems, the present invention provides an automatic full inspection machine and an automatic full inspection method for LED brackets, which can automatically grade LED brackets according to grading information and automatically stack and package qualified products.

[0008] The technical solution adopted to achieve the purpose of the present invention is an automatic full inspection machine for LED brackets, including a frame, an LED bracket conveying device, an LED bracket detection device, an LED bracket defective product offline device, an LED bracket pad paper temporary storage device and a control device, wherein:

[0009] The LED bracket conveying device is installed on the rack; the LED bracket detection device includes a light source and a shooting device, the shooting device is electrically connected to the control device, and the control device grades the incoming LED brackets according to the photos taken by the shooting device; the LED bracket defective product offline device is used to offline the defective products according to the grading information of the incoming LED brackets;

[0010] The LED bracket paper padding temporary storage device is arranged at the output end of the LED bracket conveying device, and the LED bracket paper padding temporary storage device includes a stacking turn, a qualified product storage area and a paper padding mechanism; the stacking turn is arranged at the output end of the LED bracket conveying device, the bottom of the stacking turn can be opened, and the qualified product storage area is arranged below the stacking turn; the paper padding mechanism includes a paper loading turn, a paper suction device, a paper padding horizontal displacement device and a paper padding vertical displacement device, the paper loading turn is used to hold the bracket separator paper, the paper suction device is used to suck the bracket separator paper, and the paper suction device is driven by the paper padding horizontal displacement device and the paper padding vertical displacement device to perform horizontal / vertical movement, so that the paper suction device can switch between the position above the paper loading turn and the position above the stacking turn.

[0011] Optionally, the defective LED bracket offline device includes a lifting mechanism, a block, a transfer shovel, a transfer drive mechanism and a defective product temporary storage area; wherein:

[0012] The lifting mechanism is installed on the frame, and the lifting mechanism is located in the transportation area of ​​the LED bracket conveying device;

[0013] The stopper is installed on the frame, and the stopper is located on the side of the LED bracket conveying device facing the defective product temporary storage area, and a stopper groove for the transfer shovel to extend and retract is provided in the stopper, and in the conveying direction of the LED bracket, the size of the stopper groove is smaller than the size of the LED bracket;

[0014] The transfer shovel is driven by the transfer drive mechanism and moves in the retaining groove to move the defective product from the lifting mechanism to the defective product temporary storage area;

[0015] The defective product temporary storage area is installed on the frame, and the defective product temporary storage area is located below the stopper, and the feed end of the defective product temporary storage area is located between the lifting mechanism and the stopper.

[0016] Optionally, the stopper is located outside the LED bracket conveying device, and the stopper is spaced a certain distance from an outer plate of the LED bracket conveying device so that the stopper and the outer plate form a transition channel, and the feed end of the defective product temporary storage area is located below the transition channel.

[0017] Optionally, a transition mechanism is provided in the transition channel, and the transition mechanism includes at least one telescopic drive mechanism and a baffle driven by the same, and the telescopic drive mechanism is located outside the transition channel. At least one telescopic channel extending in a horizontal direction is provided in at least one of the baffle and the outer plate, and the baffle is driven by the telescopic drive mechanism to telescopically move in the telescopic channel to switch between two positions of extending into the transition channel and extending out of the transition channel.

[0018] Optionally, the stacked material turn includes two side panels, an end panel and the bottom, the side panels, the end panel and the bottom form a material receiving channel with side and top openings, the side opening of the material receiving channel is used to dock with the tail end of the LED bracket conveying device, and the top opening is used to dock with the paper suction device;

[0019] At least one of the side panels is provided with at least one telescopic channel extending in a horizontal direction, and the bottom includes at least one telescopic driving mechanism and a baffle driven by the same, and the telescopic driving mechanism is located outside the material receiving channel. The baffle is driven by the telescopic driving mechanism to telescopically move in the telescopic channel so as to switch between two positions of extending into the material receiving channel and extending outside the material receiving channel.

[0020] Optionally, at least one telescopic channel is provided in each of the two side panels, the telescopic channels are distributed up and down in the height direction, and the heights of the telescopic channels at opposite positions in the two side panels are the same;

[0021] The bottom portion includes at least two telescopic drive mechanisms and at least two baffles, and the telescopic drive mechanisms and the baffles are symmetrically distributed on both sides of the stacked material turns.

[0022] Optionally, the distance between the bottom of the stacking turn and the qualified product temporary storage area is less than the set stacking height, and one of the side panels of the stacking turn is a movable panel that can be lifted and moved; the qualified product temporary storage area is a packaging conveying device, the head end of the packaging conveying device is arranged below the stacking turn, and the side panel of the stacking turn facing the tail end of the packaging conveying device is a movable panel;

[0023] The LED bracket pad paper temporary storage device also includes a baffle lifting mechanism, which is installed on the frame and is used to drive the movable plate to rise and fall.

[0024] Optionally, the paper sheet loading turn includes a side and a liftable support plate; the paper padding mechanism also includes a support plate lifting device, and the support plate lifting device is used to drive the support plate to rise and fall to change the groove depth of the paper sheet loading turn;

[0025] A guide is provided in front of the side opening of the stacked material turn, and the upper surface of the guide is a downwardly curved surface, the upper end of the curved surface is butted with the tail end of the LED bracket conveying device, and the lower end is butted with the bottom.

[0026] Optionally, the shooting device is arranged directly above the light source, the light source includes at least two inclined surface light sources, the lighting areas of the surface light sources overlap, and the LED bracket conveying device at the position where the LED bracket detection device is located is located in the overlapping lighting area.

[0027] Based on the same inventive concept, the present invention also provides an automatic full inspection method for LED brackets based on the above-mentioned automatic full inspection machine for LED brackets, comprising the following steps:

[0028] The control device controls the LED bracket conveying device to convey the LED bracket to the bottom of the LED bracket detection device, the control device controls the shooting device to take a photo of the LED bracket and output the photo to the control device, and the control device grades the LED bracket according to the photo, and the grading standard is: a. A bracket without missing glue and missing PIN is judged as a qualified product; b. A bracket with missing glue and / or missing PIN is judged as a defective product;

[0029] The control device controls the LED bracket conveying device to convey the LED bracket to the position of the LED bracket defective product offline device. When the LED bracket is a defective product, the control device controls the LED bracket defective product offline device to load and unload the defective product from the LED bracket conveying device; when the LED bracket is a qualified product, the LED bracket defective product offline device does not operate;

[0030] The control device controls the LED bracket conveying device to convey the LED bracket to the LED bracket paper padding temporary storage device. The control device controls the bottom of the stacked material turn to open so that the qualified products fall into the qualified product temporary storage area. The control device controls the paper padding mechanism to suck and place paper to pad a piece of bracket separator paper before placing each piece of the qualified product.

[0031] It can be known from the above technical scheme that the LED bracket automatic full inspection machine provided by the present invention includes a frame, an LED bracket conveying device, an LED bracket detection device, an LED bracket defective product offline device, an LED bracket paper padding temporary storage device and a control device, wherein the LED bracket conveying device is used to convey the LED bracket along the LED bracket conveying direction; the LED bracket detection device includes a light source and a shooting device, the shooting device is used to take pictures of the LED bracket, and the control device grades the incoming LED bracket according to the pictures taken by the shooting device; the LED bracket defective product offline device is used to perform offline processing on defective products according to the grading information of the incoming LED bracket; the LED bracket paper padding temporary storage device is used to automatically perform paper padding packaging processing on qualified LED brackets.

[0032] The LED bracket paper padding temporary storage device of the present invention includes a stacking material turn, a qualified product temporary storage area and a paper padding mechanism. The stacking material turn is used to dock with the LED bracket conveying device. The qualified LED bracket automatically falls into the stacking material turn from the tail end of the LED bracket conveying device according to inertia, which is convenient for padding paper packaging of the qualified LED bracket. The bottom of the stacking material turn can be opened so that the stacked material automatically falls into the qualified product temporary storage area set below the stacking material turn. The paper padding mechanism is used to place the bracket separator paper in the stacking material turn. The paper padding mechanism includes a paper sheet loading turn, a paper suction device, a paper padding horizontal displacement device and a paper padding vertical displacement device. The paper sheet loading turn is used to hold the bracket separator paper. The paper suction device is used to suck the bracket separator paper. The paper suction device is driven by the paper padding horizontal displacement device and the paper padding vertical displacement device to perform horizontal / vertical movement, so that the paper suction device switches between the position above the paper sheet loading turn and the position above the stacking material turn to realize the paper suction and paper placement actions.

[0033] Compared with the prior art, the LED bracket automatic full inspection machine provided by the present invention automatically collects qualified LED brackets through the stacking turn set at the tail end of the LED bracket conveying device, and automatically realizes the paper suction and paper release actions through the paper padding mechanism. The stacked materials after the paper padding automatically fall into the qualified product temporary storage area to wait for subsequent packaging operations. The device can reduce the labor intensity of workers, and the processing efficiency of qualified product paper padding packaging is extremely high. The mechanical equipment automatically pads the paper and stacks the materials so that the edges of the stacked materials are neat, and no secondary shaping is required during subsequent packaging.

[0034] Compared with the prior art, the LED bracket automatic full inspection method provided by the present invention can realize the automation of the entire process of LED bracket detection and classification processing. Defective products are automatically taken off the line through the LED bracket defective product offline device, and qualified products are automatically packed with paper, so that qualified products and defective products are automatically graded and processed, which reduces the labor intensity of workers and has extremely high grading efficiency. Automatic grading by mechanical equipment can also improve the accuracy of product grading operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The structure of the automatic full inspection machine for LED brackets in Example 1 of the present invention is shown in FIG. Figure 1 ;

[0036] Figure 2 The structure of the automatic full inspection machine for LED brackets in Example 1 of the present invention is shown in FIG. Figure 2 ;

[0037] Figure 3 for Figure 1 A schematic diagram of the structure of the defective LED bracket offline device in the LED bracket automatic full inspection machine;

[0038] Figure 4 for Figure 1 Schematic diagram of the structure of the LED bracket pad paper temporary storage device in the LED bracket automatic full inspection machine Figure 1 ;

[0039] Figure 5 for Figure 1 Schematic diagram of the structure of the LED bracket pad paper temporary storage device in the LED bracket automatic full inspection machine Figure 2 ;

[0040] Figure 6 This is a flow chart of the LED bracket automatic full inspection method in Example 2 of the present invention.

[0041] Description of reference numerals:

[0042] 100-LED bracket conveying device, 110-power device;

[0043] 200-LED bracket detection device, 210-shooting device, 220-light source;

[0044] 300-LED bracket defective product offline device, 310-lifting mechanism, 320-block, 321-blocking groove, 330-transfer shovel, 340-transfer driving mechanism, 350-defective product temporary storage area, 360-transition channel, 361-telescopic channel, 370-transition mechanism, 371-telescopic driving mechanism, 372-baffle;

[0045] 400-LED bracket pad paper temporary storage device, 410-stack turn, 411-material collection channel, 412-side plate, 413-end plate, 414-bottom, 4141-telescopic drive mechanism, 4142-baffle, 415-telescopic channel, 420-qualified product temporary storage area, 430-paper pad mechanism, 431-paper sheet loading turn, 4311-support plate, 4312-side, 432-paper suction device, 433-pad paper horizontal displacement device, 434-pad paper vertical displacement device, 435-lifting device, 4351-stepping motor, 4352-lifting plate, 440-baffle lifting mechanism, 441-lifting drive mechanism, 442-connecting piece, 443-pull rod, 450-guide;

[0046] 500- rack; 600- control device; 700- detection sensor. DETAILED DESCRIPTION

[0047] In order to enable technicians in the technical field to which the present application belongs to understand the present application more clearly, the technical solution of the present application is described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0048] Embodiment 1:

[0049] The embodiment of the present invention provides an automatic full inspection machine for LED brackets, the structure of which is as follows: Figure 1As shown, it includes a rack 500, an LED bracket conveying device 100, an LED bracket detection device 200, an LED bracket defective product offline device 300, an LED bracket pad paper temporary storage device 400 and a control device 600. The LED bracket conveying device 100 is installed on the rack 500, and the LED bracket conveying device 100 is used to convey the LED bracket along the LED bracket conveying direction; the LED bracket detection device 200 includes a light source 220 and a shooting device 210, and the shooting device 210 is electrically connected to the control device 600, and the control device 600 grades the incoming LED bracket according to the photos taken by the shooting device 210; the LED bracket defective product offline device 300 is used to process the defective products offline according to the grading information of the incoming LED bracket; the LED bracket pad paper temporary storage device 400 is used to automatically pad paper packaging for qualified LED brackets. The electrical components in the LED bracket conveying device 100, the LED bracket detection device 200, the LED bracket defective product offline device 300, and the LED bracket paper pad temporary storage device 400 are electrically connected to the control device 600 respectively. The control device 600 controls the orderly operation of the whole machine. The control device 600 can adopt any existing control device 600, such as PLC, single-chip microcomputer, etc.

[0050] The LED bracket automatic full inspection machine can realize the full process automation of LED bracket detection and classification processing, greatly reducing human misjudgment and misdetection, and the detection efficiency is extremely high. The structure of each component of the LED bracket automatic full inspection machine is described in detail below in conjunction with a specific embodiment:

[0051] The rack 500 is the installation base for other functional components of the LED bracket automatic full inspection machine. It can be made of stainless steel or aluminum. Its structural strength should meet the installation requirements of various components. The specific structure is not limited by the present invention.

[0052] The LED bracket conveying device 100 is used to convey the LED bracket along the conveying direction of the LED bracket. The LED bracket conveying device 100 can adopt any existing conveying equipment that can convey the LED bracket. The specific structure is not limited by the present invention. In this embodiment, the LED bracket conveying device 100 adopts a belt conveyor, and the power device 110 of the LED bracket conveying device 100 is arranged at the tail end, that is, the installation place of the LED bracket pad paper temporary storage device 400.

[0053] See also Figure 1 In the LED bracket conveying device 100, a plurality of detection sensors 700 are arranged. A detection sensor 700 is arranged before the LED bracket defective product offline device 300 and the LED bracket pad paper temporary storage device 400. When the detection sensor 700 detects the LED bracket, a signal is sent to the control device 600, and the control device 600 controls the corresponding device action. The detection sensor 700 is preferably a photoelectric sensor.

[0054] The LED bracket detection device 200 is used to take a photo of the LED bracket and output the photo to the control device 600. The control device 600 classifies the LED bracket shown in the photo based on the set analysis program and guides the actions of the subsequent functional components (LED bracket defective product offline device 300 and LED bracket pad paper temporary storage device 400). The control device 600 automatically classifies the incoming LED bracket according to the appearance characteristics of the incoming LED bracket. The specific judgment criteria can be, for example: a. A bracket without missing glue and PIN is judged as a qualified product (abbreviated as OK product); b. A bracket with missing glue and / or missing PIN is judged as a defective product (abbreviated as NG product).

[0055] See also Figure 1 The LED bracket detection device 200 includes a light source 220 and a camera 210. The camera 210 is arranged directly above the light source 220. The camera 210 is electrically connected to the control device 600. The control device 600 classifies the incoming LED brackets according to the photos taken by the camera. The light source 220 and the camera 210 can use existing equipment, and the specific selection is not limited by the present invention.

[0056] For details, see Figure 1 In this embodiment, the shooting device 210 uses a CCD camera, and the light source 220 includes at least two inclined surface light sources, the illumination areas of the inclined surface light sources overlap, and the LED bracket conveying device 100 at the position where the LED bracket detection device 200 is located is located in the overlapping illumination area. In this embodiment, four inclined surface light sources are specifically used, and the four surface light sources are distributed on the four sides of the rectangle, and the illumination areas of the four surface light sources overlap in the center. The overlapping illumination areas increase the shooting brightness of the LED bracket, making the photos clearer and able to clearly reflect the subtle defects on the LED bracket.

[0057] The LED bracket defective product offline device 300 is used to offline process defective products according to the grading information of the incoming LED brackets, and can specifically be implemented by negative pressure adsorption transfer, pushing, etc. to achieve the offline of defective products. The LED bracket defective product offline device 300 can use existing equipment to remove defective products from the LED bracket conveying device 100, and the specific structure of the LED bracket defective product offline device 300 is not limited by the present invention.

[0058] See also Figure 2 and Figure 3In this embodiment, the defective LED bracket offline device 300 includes a lifting mechanism 310, a block 320, a transfer shovel 330, a transfer drive mechanism 340 and a defective temporary storage area 350. The lifting mechanism 310 is installed on the frame 500, and the lifting mechanism 310 is located in the transportation area of ​​the LED bracket conveying device 100, specifically in the overlapping area of ​​the lighting area, that is, directly below the position where the LED bracket is inspected, and can stably lift the defective product LED bracket. When the defective product LED bracket is lifted, it is separated from the LED bracket conveying device 100. At this time, the transfer shovel 330 can extend under the defective product LED bracket to transfer the defective product LED bracket to the transfer shovel 330. The lifting mechanism 310 can adopt any existing linear displacement mechanism, and the cylinder is preferably used in this embodiment.

[0059] See also Figure 2 The stopper 320 is mounted on the frame 500, and the stopper 320 is located on the side of the LED bracket conveying device 100 facing the defective product temporary storage area 350. The function of the stopper 320 is to block the defective product LED bracket and realize the material dropping. The stopper 320 is provided with a stopper groove 321 for the transfer shovel 330 to extend and retract. In the conveying direction of the LED bracket, the size of the stopper groove 321 is smaller than the size of the LED bracket, so that when the transfer shovel 330 supports the defective product LED bracket to extend and retract in the stopper groove 321, when the defective product LED bracket moves to the end face of the stopper groove 321, the defective product LED bracket can be blocked by the stopper groove 321, so as to fall from the transfer shovel 330. The transfer shovel 330 is driven by the transfer drive mechanism 340 and moves in the stopper groove 321 to move the defective product from the lifting mechanism 310 to the defective product temporary storage area 350. The transfer drive mechanism 340 can adopt any existing linear displacement mechanism, and the cylinder is preferably used in this embodiment.

[0060] The defective product temporary storage area 350 is installed on the rack 500, and the defective product temporary storage area 350 is located below the stop block 320. The feeding end of the defective product temporary storage area 350 is located between the lifting mechanism 310 and the stop block 320. When the defective product LED bracket touches the stop groove 321 and falls, it can fall on the feeding end of the defective product temporary storage area 350.

[0061] Considering that the defects on some defective LED brackets are small and can be used after repair, it is also necessary to avoid the defective LED brackets from being damaged when recycling them. Figure 2In this embodiment, the stopper 320 is located outside the LED bracket conveying device 100, and the stopper 320 is spaced a certain distance from the outer plate 120 of the LED bracket conveying device 100, so that the stopper 320 and the outer plate 120 form a transition channel 360, and the feed end of the defective product temporary storage area 350 is located below the transition channel 360. A transition mechanism 370 is provided in the transition channel 360, see Figure 3 The transition mechanism 370 includes at least one telescopic driving mechanism 371 and a baffle 372 driven by the same. The telescopic driving mechanism 371 is located outside the transition channel 360. At least one telescopic channel 361 extending in the horizontal direction is opened in at least one of the block 320 and the outer plate 120. The baffle 372 is driven by the telescopic driving mechanism 371 and telescopically moves in the telescopic channel 361 to switch between two positions of extending into the transition channel 360 and extending out of the transition channel 360.

[0062] As a preferred embodiment, at least one telescopic channel 361 is provided in each of the stopper 320 and the outer plate 120, and the telescopic channels 361 in the stopper 320 and the outer plate 120 that are opposite to each other have the same height. When more than two telescopic channels 361 are provided, each telescopic channel 361 is parallel to each other in the height direction and distributed up and down. The two baffles 372 cooperate to close or open the transition channel 360, making the closing or opening process faster and improving the working efficiency.

[0063] The number of the telescopic channels 361, telescopic drive mechanisms 371 and baffles 372 is determined according to the height difference between the transition channel 360 and the defective product temporary storage area 350. For example, if the height difference between the transition channel 360 and the defective product temporary storage area 350 is large, the defective product LED bracket may be impacted after falling, which may cause the plastic to fall off. In this case, at least two sets of telescopic drive mechanisms 371 and baffles 372 should be arranged in the height direction, so that the defective product LED bracket gradually falls, and the baffles 372 provide buffering to prevent the LED bracket from being damaged.

[0064] The LED bracket pad paper temporary storage device 400 is arranged at the output end of the LED bracket conveying device 100, and is used to automatically pad paper packaging for qualified LED brackets. Figure 4 and Figure 5 The LED bracket paper padding temporary storage device 400 includes a stacking turn 410, a qualified product temporary storage area 420 and a paper padding mechanism 430. The stacking turn 410 is used to dock with the LED bracket conveying device 100. The stacking turn 410 is arranged at the tail end of the LED bracket conveying device 100, that is, the output end of the LED bracket conveying device 100, so that the LED bracket automatically falls into the stacking turn 410 under the action of inertia.

[0065] For details, see Figure 4 and Figure 5In this embodiment, the stacking turn 410 includes two side panels 412, an end panel 413 and a bottom 414. The side panels 412, the end panels 413 and the bottom 414 form a receiving channel 411 with side and top openings. The side opening of the receiving channel 411 is used to dock with the tail end of the LED bracket conveying device 100, so that qualified LED brackets can automatically enter the receiving channel 411, and the top opening is used to dock with the paper padding mechanism 430, so that the bracket separation paper falls into the receiving channel 411. In order to improve the neatness of the stacking, an alignment push plate can be optionally provided on the inner side of the end panel 413, through which the edges of the stacking are aligned, which is convenient for subsequent packaging.

[0066] To ensure that qualified LED brackets can enter the receiving channel 411 smoothly without getting stuck, see Figure 5 In this embodiment, a guide 450 is provided in front of the side opening of the stacking turn 410. The guide 450 is specifically provided at the tail end of the LED bracket conveying device 100, and is located between the LED bracket conveying device 100 and the stacking turn 410. The upper surface of the guide 450 is a downward curved surface, the upper end of the curved surface is butted with the tail end of the LED bracket conveying device 100, and the lower end is butted with the bottom of the stacking turn 410. Under the action of gravity and inertia, qualified LED brackets can smoothly enter the receiving channel 411 along the curved surface without material jamming.

[0067] The bottom of the stacked material turn 410 can be opened, and the opening method can adopt any existing opening method. For example, the bottom of the stacked material turn 410 is connected to the other parts of the stacked material turn 410 through an elastic member, and a qualified LED bracket automatically opens the bottom under the action of gravity, or a driving mechanism is used to drive the bottom to open, etc. The opening method and opening structure of the bottom of the stacked material turn 410 are not limited by the present invention.

[0068] In this embodiment, the bottom of the stacked material turn 410 is opened by a driving mechanism. Figure 4 and Figure 5 At least one side plate 412 is provided with at least one telescopic channel 415 extending in the horizontal direction. The bottom 414 includes at least one telescopic driving mechanism 4141 and a baffle 4142 driven by the same. The telescopic driving mechanism 4141 is located outside the material receiving channel 411. The baffle 4142 is driven by the telescopic driving mechanism 4141 to telescopically move in the telescopic channel 415 to switch between two positions of extending into the material receiving channel 411 and extending out of the material receiving channel 411. The baffle 4142 serves as the bottom plate of the stacked material turn 410. When there is only one baffle 4142, it should be ensured that after the baffle 4142 is fully extended, the area of ​​the baffle 4142 located inside the material receiving channel 411 meets the requirements of stably supporting a qualified LED bracket. The telescopic driving mechanism 4141 is preferably a cylinder.

[0069] As a preferred embodiment, at least one telescopic channel 415 is provided in each of the two side panels 412 of the stacking material turn 410, and the heights of the telescopic channels 415 located opposite to each other in the two side panels 412 are the same. When more than two telescopic channels 415 are provided, each telescopic channel 415 is parallel to each other in the height direction and distributed up and down. Correspondingly, the bottom 414 includes at least two telescopic drive mechanisms 4141 and at least two baffles 4142. The telescopic drive mechanisms 4141 and the baffles 4142 are symmetrically distributed on both sides of the stacking material turn 410. The two baffles 4142 located at the same height extend or retract at the same time to close or open the bottom channel of the stacking material turn 410. The two baffles 4142 cooperate to close or open the bottom channel of the stacking material turn 410, so that the closing or opening process is faster and the operation efficiency is improved.

[0070] The number of the telescopic channel 415, the telescopic drive mechanism 4141 and the baffle 4142 is determined according to the height difference between the stacking turn 410 and the qualified product temporary storage area 420, and the set stacking height. For example, if the set stacking height is high, the height difference between the stacking turn 410 and the qualified product temporary storage area 420 is large, and the qualified LED brackets and bracket separation paper may be offset in the process of falling. At this time, at least two sets of telescopic drive mechanisms 4141 and baffles 4142 should be set in the height direction, so that the qualified LED brackets and bracket separation paper gradually fall, and the baffle 4142 is used to buffer and prevent the LED bracket from shifting.

[0071] The qualified product temporary storage area 420 is arranged below the stacking material loop 410 and is used to temporarily store the stacking materials. The qualified product temporary storage area 420 can be a storage platform or other mechanism that can stably place the stacking materials. The specific structure is not limited in the present invention. Figure 4 and Figure 5 In this embodiment, the qualified product temporary storage area 420 is a packaging conveying device, and the head end of the packaging conveying device is arranged below the stacking turn 410. The stacked materials can be transferred to the next process in sequence through the packaging conveying device.

[0072] Since the qualified product temporary storage area 420 in this embodiment is a fixed part, its height remains unchanged. As the stacking height increases, qualified LED brackets and bracket separators gradually accumulate in the material collection channel 411. Blocked by the side panels 412, some LED brackets located at the upper part cannot be transferred. To solve this problem, in this embodiment, the distance between the bottom of the stacking turn 410 and the qualified product temporary storage area 420 is less than the set stacking height, which can ensure that the first few LED brackets in the stacking fall stably on the qualified product temporary storage area 420 without shifting. One of the side panels 412 of the stacking turn 410 is configured as a movable plate 4121 that can be raised and lowered, such as Figure 5As shown, specifically, the movable plate 4121 is a side plate of the stacking turn 410 facing the rear end of the packaging conveying device. Correspondingly, the LED bracket pad paper temporary storage device also includes a baffle lifting mechanism 440, which is installed on the frame 500 and is used to drive the movable plate 4121 to rise and fall.

[0073] For details, see Figure 4 and Figure 5 The baffle lifting mechanism 440 includes a lifting drive mechanism 441, a connecting member 442 and a pull rod 443 connected in sequence. The lifting drive mechanism 441 is preferably a cylinder, which drives the connecting member 442 to rise and fall. Two pull rods 443 are provided, and the two pull rods 443 are vertical rods and parallel to each other. One end of the pull rod 443 is fixedly connected to the connecting member 442, and the other end is fixedly connected to the movable plate 4121, thereby driving the movable plate 4121 to rise during the stacking and transferring process to avoid collision with the stacking materials.

[0074] The paper padding mechanism 430 is used to place the bracket separator paper into the stacking turn 410, see Figure 4 and Figure 5 , the paper padding mechanism 430 includes a paper sheet loading loop 431, a paper suction device 432, a paper padding horizontal displacement device 433 and a paper padding vertical displacement device 434. The paper sheet loading loop 431 is used to hold the bracket separation paper. Preferably, the paper sheet loading loop 431 is located outside the stacking loop 410. The paper suction device 432 is used to suck the bracket separation paper. Preferably, the paper suction device 432 uses two suction cups, such as Figure 5 The paper suction device 432 is driven by the paper pad horizontal displacement device 433 and the paper pad vertical displacement device 434 to move horizontally / vertically, so that the paper suction device 432 switches between the position above the paper sheet loading turn 431 and the position above the stacking turn 410, and sucks and releases paper.

[0075] In this embodiment, the paper loading loop 431 includes a side 4312 and a liftable support plate 4311, and the corresponding paper padding mechanism 430 also includes a support plate lifting device 435, which is used to drive the support plate 4311 to move up and down to change the groove depth of the paper loading loop 431. Considering that the groove depth of the paper loading loop 431 needs to reduce the thickness of a piece of bracket separator paper each time the paper is sucked, the adjustment of the groove depth of the paper loading loop 431 is continuous step-by-step. For the convenience of control, as a preferred embodiment, the support plate lifting device 435 in this embodiment adopts a stepper motor 4351 to drive a ball screw pair to achieve lifting and lowering. The nut of the ball screw pair is connected to a lifting plate 4352, and the lifting plate 4352 is directly connected to the support plate 4311. A lifting groove is provided in the side 4312 for the lifting plate 4352 to pass through. Figure 5As shown, the stepper motor 4351 drives the ball screw pair to rotate, driving the support plate 4311 to gradually rise, thereby realizing the groove depth adjustment, ensuring that the paper suction device 432 can suck the bracket separation paper every time it moves above the paper loading turn 431.

[0076] The LED bracket pad paper temporary storage device 400 can be directly applied to the existing LED bracket detection equipment. By connecting the electrical components in the LED bracket pad paper temporary storage device 400 to the controller of the existing LED bracket detection equipment, the qualified LED brackets can be automatically packed with pad paper after the LED bracket detection equipment has detected and graded the brackets. The specific working principle is as follows:

[0077] The LED bracket automatic full inspection machine detects the appearance characteristics of the incoming LED brackets and automatically grades the incoming LED brackets. The specific judgment criteria can be, for example: a. Brackets without missing glue and PIN are judged as OK products; b. Brackets with missing glue are judged as NG products with missing glue; c. Brackets with missing PIN are judged as NG products with missing PIN. Both b and c are defective products, which are removed from the line by the LED bracket defective product removal device 300 during the transfer process, so the LED brackets transported to the LED bracket pad paper temporary storage device 400 are all qualified products.

[0078] The LED bracket conveying device 100 conveys the qualified LED bracket to the LED bracket pad paper temporary storage device 400 . Under the action of gravity and inertia, the qualified LED bracket smoothly enters the material receiving channel 411 of the stacking turn 410 along the curved surface of the guide member 450 .

[0079] Before the qualified LED bracket falls in, the paper suction device 432 is first driven by the paper pad vertical displacement device 434 to move vertically to suck the paper; after sucking the paper, the paper pad vertical displacement device 434 drives the paper suction device 432 to rise, and the paper pad horizontal displacement device 433 drives the paper suction device 432 to move horizontally to above the stacking turn 410; the paper pad vertical displacement device 434 drives the paper suction device 432 to descend to release the paper.

[0080] Before the qualified LED bracket falls in, the two telescopic driving mechanisms 4141 located at the top drive the baffles 4142 to extend, and the qualified LED bracket falls on the two baffles 4142 at the top; then the two telescopic driving mechanisms 4141 located at the bottom drive the baffles 4142 to extend, and at the same time, the two telescopic driving mechanisms 4141 located at the top drive the baffles 4142 to retract, and the qualified LED bracket falls on the two baffles 4142 at the bottom; then the two telescopic driving mechanisms 4141 located at the bottom drive the baffles 4142 to retract, and the qualified LED bracket falls on the bracket separation paper in the qualified product storage area 420.

[0081] Through the above operation, each time a piece of qualified product is placed, a piece of bracket separation paper is placed. When the number of qualified product stacks reaches a set value, the stacks are transferred to the subsequent workstations through the qualified product temporary storage area 420.

[0082] Embodiment 2:

[0083] Based on the same inventive concept, an embodiment of the present invention provides an automatic full inspection method for an LED bracket, which is implemented based on the automatic full inspection machine for the LED bracket in the above embodiment, see Figure 1 and Figure 6 , the method comprises the following steps:

[0084] The control device 600 controls the LED bracket conveying device 100 to convey the LED bracket to the bottom of the LED bracket detection device 200, and the control device 600 controls the shooting device 210 to take a photo of the LED bracket and output the photo to the control device 600. The control device 600 classifies the LED bracket according to the photo, and the classification standard is: a. A bracket without glue deficiency and PIN deficiency is judged as a qualified product; b. A bracket with glue deficiency and / or PIN deficiency is judged as a defective product;

[0085] The control device 600 controls the LED bracket conveying device 100 to convey the LED bracket to the position of the LED bracket defective product offline device 300. When the LED bracket is a defective product, the control device 600 controls the LED bracket defective product offline device 300 to unload and unload the defective product from the LED bracket conveying device 100; when the LED bracket is a qualified product, the LED bracket defective product offline device 300 does not operate;

[0086] The control device 600 controls the LED bracket conveying device 100 to convey the LED bracket to the LED bracket paper padding temporary storage device 400. The control device 600 controls the bottom of the stacking turn 410 to open so that qualified products fall into the qualified product temporary storage area 420. The control device 600 controls the paper padding mechanism 430 to suck and place paper to pad a piece of bracket separation paper before placing each piece of qualified product.

[0087] Through the above embodiments, the present invention has the following beneficial effects or advantages:

[0088] 1) The LED bracket automatic full inspection machine provided by the present invention is provided with a temporary storage device for padding paper of LED brackets, which automatically collects qualified LED brackets through the stacking turn set at the tail end of the bracket conveying device of the previous station, and automatically realizes the paper suction and paper release actions through the padding mechanism, and the stacked materials after padding paper automatically fall into the temporary storage area of ​​qualified products, waiting for subsequent packaging operations. The labor intensity of workers can be reduced through this device, and the efficiency of the packaging of qualified products with padding paper is extremely high. The mechanical equipment automatically pads and stacks the materials so that the edges of the stacked materials are neat, and no secondary shaping is required during subsequent packaging.

[0089] 2) The LED bracket automatic full inspection method provided by the present invention can realize the automation of the entire process of LED bracket detection and classification processing. Defective products are automatically taken off the line through the LED bracket defective product offline device, and qualified products are automatically packed with paper, so that qualified products and defective products are automatically graded and processed, which reduces the labor intensity of workers and has extremely high grading efficiency. In addition, the automatic grading processing by mechanical equipment can also improve the accuracy of product grading operations.

[0090] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0091] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. An automatic full inspection machine for LED brackets, characterized by: It includes a rack, an LED bracket conveying device, an LED bracket detection device, an LED bracket defective product offline device, an LED bracket pad paper temporary storage device and a control device, wherein: The LED bracket conveying device is installed on the rack; the LED bracket detection device includes a light source and a shooting device, the shooting device is arranged directly above the light source, the light source includes at least two inclined surface light sources, the lighting areas of the surface light sources overlap, and the LED bracket conveying device at the position where the LED bracket detection device is located is located in the overlapping lighting area; the shooting device is electrically connected to the control device, and the control device grades the incoming LED brackets according to the photos taken by the shooting device; the LED bracket defective offline device is used to offline defective products according to the grading information of the incoming LED brackets; The LED bracket paper padding temporary storage device is arranged at the output end of the LED bracket conveying device, and the LED bracket paper padding temporary storage device includes a stacking turn, a qualified product temporary storage area and a paper padding mechanism; the stacking turn is arranged at the output end of the LED bracket conveying device, the bottom of the stacking turn can be opened, and the qualified product temporary storage area is arranged below the stacking turn; the paper padding mechanism includes a paper sheet loading turn, a paper suction device, a paper padding horizontal displacement device and a paper padding vertical displacement device, the paper sheet loading turn is used to hold the bracket separator paper, the paper suction device is used to suck the bracket separator paper, and the paper suction device is driven by the paper padding horizontal displacement device and the paper padding vertical displacement device to perform horizontal / vertical movement, so that the paper suction device switches between the position above the paper sheet loading turn and the position above the stacking turn; The defective LED bracket offline device comprises a lifting mechanism, a stopper, a transfer shovel, a transfer drive mechanism and a defective product temporary storage area; wherein: The lifting mechanism is installed on the frame, and the lifting mechanism is located in the transport area of ​​the LED bracket conveying device, and the lifting mechanism is located in the overlap area of ​​the illumination area of ​​the surface light source; The stopper is installed on the frame, and the stopper is located on the side of the LED bracket conveying device facing the defective product temporary storage area, and a stopper groove for the transfer shovel to extend and retract is provided in the stopper, and in the conveying direction of the LED bracket, the size of the stopper groove is smaller than the size of the LED bracket; The transfer shovel is driven by the transfer drive mechanism and moves in the retaining groove to move the defective product from the lifting mechanism to the defective product temporary storage area; The defective product temporary storage area is installed on the frame, and the defective product temporary storage area is located below the stopper, and the feed end of the defective product temporary storage area is located between the lifting mechanism and the stopper; When the LED bracket is inspected, the lifting mechanism is located directly below the position of the LED bracket; the defective product LED bracket is lifted by the lifting mechanism and separated from the LED bracket conveying device, and the transfer shovel extends under the defective product LED bracket, supports the defective product LED bracket and telescopically moves in the retaining groove, and when the defective product LED bracket moves to the end surface of the retaining groove, the defective product LED bracket is blocked by the retaining groove and falls from the transfer shovel to the feeding end of the defective product temporary storage area.

2. The LED bracket automatic full inspection machine according to claim 1, characterized in that: The stopper is located outside the LED bracket conveying device, and is spaced a certain distance from an outer plate of the LED bracket conveying device so that the stopper and the outer plate form a transition channel, and the feed end of the defective product temporary storage area is located below the transition channel.

3. The LED bracket automatic full inspection machine as claimed in claim 2, characterized in that: A transition mechanism is provided in the transition channel, and the transition mechanism includes at least one telescopic drive mechanism and a baffle driven by the same, the telescopic drive mechanism is located outside the transition channel, and at least one telescopic channel extending in a horizontal direction is provided in at least one of the baffle and the outer plate, and the baffle is driven by the telescopic drive mechanism to telescopically move in the telescopic channel to switch between two positions of extending into the transition channel and extending out of the transition channel.

4. The LED bracket automatic full inspection machine according to claim 1, characterized in that: The stacked material turn comprises two side plates, an end plate and the bottom, the side plates, the end plate and the bottom form a material receiving channel with side and top openings, the side opening of the material receiving channel is used to dock with the tail end of the LED bracket conveying device, and the top opening is used to dock with the paper suction device; At least one of the side panels is provided with at least one telescopic channel extending in a horizontal direction, and the bottom includes at least one telescopic driving mechanism and a baffle driven by the same, and the telescopic driving mechanism is located outside the material receiving channel. The baffle is driven by the telescopic driving mechanism to telescopically move in the telescopic channel so as to switch between two positions of extending into the material receiving channel and extending outside the material receiving channel.

5. The LED bracket automatic full inspection machine as claimed in claim 4, characterized in that: At least one telescopic channel is provided in each of the two side panels, and the telescopic channels are distributed up and down in the height direction, and the telescopic channels at opposite positions in the two side panels have the same height; The bottom portion includes at least two telescopic drive mechanisms and at least two baffles, and the telescopic drive mechanisms and the baffles are symmetrically distributed on both sides of the stacked material turns.

6. The LED bracket automatic full inspection machine according to claim 5, characterized in that: The distance between the bottom of the stacking turn and the qualified product temporary storage area is less than the set stacking height, and one of the side panels of the stacking turn is a movable panel that can be lifted and moved; the qualified product temporary storage area is a packaging conveying device, the head end of the packaging conveying device is arranged below the stacking turn, and the side panel of the stacking turn facing the tail end of the packaging conveying device is a movable panel; The LED bracket pad paper temporary storage device also includes a baffle lifting mechanism, which is installed on the frame and is used to drive the movable plate to rise and fall.

7. The LED bracket automatic full inspection machine according to claim 4, characterized in that: The paper sheet loading turn includes a side and a liftable support plate; the paper padding mechanism also includes a support plate lifting device, and the support plate lifting device is used to drive the support plate to rise and fall to change the groove depth of the paper sheet loading turn; A guide is provided in front of the side opening of the stacked material turn, and the upper surface of the guide is a downwardly curved surface, the upper end of the curved surface is butted with the tail end of the LED bracket conveying device, and the lower end is butted with the bottom.

8. An automatic full inspection method for LED brackets based on the automatic full inspection machine for LED brackets according to any one of claims 1 to 7, characterized in that: The steps include: The control device controls the LED bracket conveying device to convey the LED bracket to the bottom of the LED bracket detection device, the control device controls the shooting device to take a photo of the LED bracket and output the photo to the control device, and the control device grades the LED bracket according to the photo, and the grading standard is: a. A bracket without missing glue and missing PIN is judged as a qualified product; b. A bracket with missing glue and / or missing PIN is judged as a defective product; The control device controls the LED bracket conveying device to convey the LED bracket to the position of the LED bracket defective product offline device. When the LED bracket is a defective product, the control device controls the LED bracket defective product offline device to load and unload the defective product from the LED bracket conveying device; when the LED bracket is a qualified product, the LED bracket defective product offline device does not operate; The control device controls the LED bracket conveying device to convey the LED bracket to the LED bracket paper padding temporary storage device. The control device controls the bottom of the stacked material turn to open so that the qualified products fall into the qualified product temporary storage area. The control device controls the paper padding mechanism to suck and place paper to pad a piece of bracket separator paper before placing each piece of the qualified product.

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