LED dispensing device

Abstract

The present application relates to an LED dispensing device, and relates to the field of a solid crystal machine, which includes a frame; and: a first sensing module, fixedly mounted on the frame, located on the outlet side of the dispensing mechanism, used to sense the carrier outputted by the dispensing mechanism and output a first sensing signal; a defect detection mechanism, fixedly mounted on the frame, located on the side of the carrier sensing module away from the dispensing mechanism, connected to the signal output terminal of the carrier sensing module, used to receive the first sensing signal and start; a second sensing module, fixedly mounted on the frame, located on the side of the defect detection mechanism away from the dispensing mechanism, used to detect the carrier sent out by the defect detection mechanism and output a second sensing signal; a buzzer, fixedly mounted on the frame, connected to the signal output terminal of the second sensing module, used to receive the second sensing signal and emit a prompt sound. The present application can achieve the technical effect of automatically detecting defects in LED glue points.

Description

Technical Field

[0001] The present application relates to the field of die bonding machines, and in particular to an LED glue dispensing device. Background Art

[0002] LED is a solid-state semiconductor device that can convert electrical energy into visible light. It can directly convert electrical energy into light energy. LED is widely used as a new lighting source material. The packaging function of LED is to provide sufficient protection for the chip to prevent the chip from failing due to long-term exposure to the air or mechanical damage, so as to improve the stability of the chip. In the LED packaging process, the LED bracket and the LED mounted on it need to be glued. The glue dispensing process is a very important process. The quality of the glue dispensing determines the quality of the LED finished product to a certain extent.

[0003] In the prior art, a common LED dispensing device mainly includes a frame, on which a feeding mechanism, a driving mechanism and a dispensing mechanism are arranged. The dispensing mechanism is installed at the driving end of the driving mechanism, and the dispensing mechanism is set above the feeding mechanism. In the actual dispensing process, the feeding mechanism transports the LED carrier to the bottom of the dispensing mechanism, and the driving mechanism drives the dispensing mechanism to move on the LED carrier to complete the dispensing process of the LED.

[0004] In the actual production process, in order to ensure the quality of LED finished products, operators are required to inspect the glue dots on the LED to determine whether there are defects such as leaks, bubbles, and overflow. However, the method of identifying defective glue dots by the naked eye of operators requires a lot of manpower and time, which affects the efficiency of manufacturers' LED dispensing processing, and there is room for improvement. Utility Model Content

[0005] In order to achieve the technical effect of automatically detecting defects in glue spots on LEDs and save the manpower and time required to detect glue spots on LEDs, the present application provides an LED glue dispensing device.

[0006] The LED dispensing device provided in this application adopts the following technical solution:

[0007] An LED dispensing device comprises a frame; and:

[0008] A first sensing module, fixedly mounted on the frame and located at an outlet side of the dispensing mechanism, for sensing the carrier outputted by the dispensing mechanism and outputting a first sensing signal;

[0009] A defect detection mechanism, fixedly mounted on the frame, located on a side of the carrier sensing module away from the dispensing mechanism, connected to a signal output end of the carrier sensing module, and configured to receive the first sensing signal and start;

[0010] A second sensing module is fixedly mounted on the frame and is located on a side of the defect detection mechanism away from the dispensing mechanism, and is used to detect the carrier plate sent out through the defect detection mechanism and output a second sensing signal;

[0011] A buzzer is fixedly mounted on the rack and connected to the signal output terminal of the second sensing module, and is used for receiving the second sensing signal and issuing a prompt sound.

[0012] By adopting the above technical solution, after the LED on the carrier board completes glue dispensing, the feeding mechanism sends the carrier board out. When the carrier board passes through the first sensing module, the first sensing module controls the operation of the defect detection mechanism. At the same time, the feeding mechanism continuously drives the carrier board to pass through the defect detection mechanism. The defect detection mechanism performs defect detection on the glue points on the LED, thereby achieving the technical effect of automatically sensing the carrier board and automatically detecting glue point defects. After the LED is detected by the defect detection mechanism and sent out, the second sensing module senses the carrier board and determines that the LED has completed glue point defect detection and controls the buzzer to sound a prompt, thereby facilitating the operator to remove the detected LED carrier board, thereby effectively improving the convenience of the operator in using the glue dispensing device.

[0013] Preferably, the defect detection mechanism comprises a detection box, the detection box is fixedly connected to the frame, and the detection box is provided with a feed inlet and a discharge outlet for the feeding mechanism to pass through; and:

[0014] An X-ray detection component, fixedly installed in the detection box, signal-connected to the signal output end of the first sensing module, and used for receiving the first sensing signal and outputting scanned image data;

[0015] An image processor, data-connected to the signal input terminal of the X-ray detection component, for receiving and comparing the scanned image data, and outputting a marking signal when the scanned image is abnormal;

[0016] The marking component is fixedly mounted on the outer side wall of the detection box and is located at the discharge port, and is used to receive the marking signal and mark the carrier.

[0017] By adopting the above technical solution, when the feeding mechanism transports the carrier to the X-ray detection component in the detection box, the X-ray detection component scans the LED on the carrier and outputs the scanned image. After comparison and processing by the image processor, if there is a defect in the glue point, the image processor can control the marking component to mark the carrier, so that the operator can identify the carrier with defective glue points and improve the convenience of the operator in using the dispensing device.

[0018] Preferably, the marking component comprises:

[0019] Photochromic labels are fixedly mounted on the carrier board;

[0020] The ultraviolet emitter is fixedly mounted on the body of the detection box and is located above the discharge port. It is signal-connected to the signal output terminal of the image processor and is used to receive the marking signal and emit ultraviolet rays.

[0021] By adopting the above technical solution, the photochromic label will change color after being irradiated with ultraviolet light and will return to normal after a period of time. When there is a defect in the glue point on the LED on the carrier, the ultraviolet emitter emits ultraviolet light, and the feeding mechanism continuously transports the carrier through the ultraviolet emitter, which can cause the photochromic label on the carrier to change color. The operator can judge whether there is a defective glue point on the LED on the carrier by observing the color of the photochromic label on the carrier. In addition, the photochromic label can return to its original color after changing color for a period of time and can be recycled.

[0022] Preferably, the first sensing module includes a first infrared radiation sensor, and the first infrared radiation sensor is located between the feed port and the glue dispensing mechanism;

[0023] The first infrared radiation sensor comprises a first transmitting end and a first receiving end fixedly mounted on the frame, and the first transmitting end and the first receiving end are located on both sides of the feeding mechanism;

[0024] The signal output terminal of the first receiving terminal is signal-connected to a single-chip microcomputer, and the signal output terminal of the single-chip microcomputer is signal-connected to the signal input terminal of the X-ray detection component.

[0025] By adopting the above technical solution, when the carrier board is transported between the first transmitting end and the first receiving end through the feeding mechanism, the infrared rays emitted by the first transmitting end cannot be received by the receiving end, and the receiving end outputs a high-level signal. After the single-chip microcomputer recognizes the high-level signal, it controls the operation of the X-ray detection component, thereby achieving the technical effect of automatically sensing the carrier board and automatically starting the X-ray detection component.

[0026] Preferably, the second sensing module includes a second infrared radiation sensor, and the second infrared radiation sensor is located on a side of the ultraviolet emitter away from the discharge port;

[0027] The second infrared counter-radiation sensor comprises a second transmitting end and a second receiving end fixedly mounted on the frame, and the second transmitting end and the second receiving end are located on both sides of the feeding mechanism;

[0028] The signal output terminal of the second receiving terminal is signal-connected to the signal input terminal of the buzzer.

[0029] By adopting the above technical solution, when the LED on the carrier board is detected by X-ray scanning and sent out through the feeding mechanism, the carrier board is blocked between the second transmitting end and the second receiving end, and the infrared light emitted by the second transmitting end cannot be received by the receiving end. The receiving end outputs a high-level signal, and the buzzer emits a warning sound after receiving the high-level signal, which can prompt the operator to remove the carrier board.

[0030] In summary, the LED dispensing device of the present application includes at least one of the following beneficial technical effects:

[0031] 1. Through the combination and use of X-ray detection components, image processors, ultraviolet emitters and photosensitive color-changing labels on the carrier board, the technical effect of automatic X-ray scanning and detection of LED glue points on the carrier board can be achieved. The images obtained by the scanning and detection are compared by the image processor, which can automatically determine whether the LED glue points on the carrier board have defects, and mark the carrier board with defective LED glue points, which is convenient for operators to classify and screen the carrier boards with defective LED glue points, which can effectively improve the convenience and efficiency of detecting LED glue point defects and save manpower and time required for defect detection of LED glue points;

[0032] 2. Through the coordination and use of the first infrared radiation sensor and the single-chip microcomputer, it is possible to automatically detect the carrier fed into the detection box via the feeding mechanism and automatically control the start-up of the X-ray detection component. The X-ray detection device automatically shuts down after running for a set period of time, which can effectively reduce the operating time of the X-ray detection component and save the cost of defect detection of LED glue points. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of an embodiment of the present application for illustrating the overall structure of a dispensing machine.

[0034] Figure 2 It is a schematic diagram of an embodiment of the present application for demonstrating the internal signal transmission of a dispensing machine.

[0035] Explanation of the reference numerals: 1. Frame; 11. Glue dispensing mechanism; 12. Feeding mechanism; 2. Defect detection mechanism; 21. Inspection box; 211. Feed port; 212. Discharge port; 22. X-ray detection component; 23. Marking component; 231. Ultraviolet emitter; 232. Photochromic label; 3. Buzzer; 4. First infrared counter-radiation sensor; 41. First transmitting end; 42. First receiving end; 5. Second infrared counter-radiation sensor; 51. Second transmitting end; 52. Second receiving end; 6. Carrier board. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-2 This application is described in further detail.

[0037] Example

[0038] The present application embodiment discloses an LED glue dispensing device. Figure 1 and Figure 2 , including a frame 1; and: a first sensing module, fixedly mounted on the frame 1, located at the outlet side of the dispensing mechanism 11, used to sense the carrier 6 output through the dispensing mechanism and output a first sensing signal; a defect detection mechanism 2, fixedly mounted on the frame 1, located at the side of the carrier 6 sensing module away from the dispensing mechanism 11, connected to the signal output end of the carrier 6 sensing module, used to receive the first sensing signal and start; a second sensing module, fixedly mounted on the frame 1, located at the side of the defect detection mechanism 2 away from the dispensing mechanism 11, used to detect the carrier 6 sent out through the defect detection mechanism 2 and output a second sensing signal; a buzzer 3, fixedly mounted on the frame 1, connected to the signal output end of the second sensing module, used to receive the second sensing signal and emit a prompt sound.

[0039] After the glue dispensing of the LED on the carrier board 6 is completed, the feeding mechanism 12 sends the carrier board 6 out. When the carrier board 6 passes through the first sensing module, the first sensing module controls the operation of the defect detection mechanism 2. At the same time, the feeding mechanism 12 continuously drives the carrier board 6 to pass through the defect detection mechanism 2. The defect detection mechanism 2 performs defect detection on the glue spots on the LED, thereby achieving the technical effect of automatically sensing the carrier board 6 and automatically detecting glue spot defects.

[0040] After the LED is inspected by the defect detection mechanism 2 and sent out, the second sensing module senses the carrier 6 and determines that the LED has completed the glue point defect detection and controls the buzzer 3 to emit a prompt sound, which is convenient for the operator to remove the inspected LED carrier 6, and can effectively improve the convenience of the operator in using the dispensing device.

[0041] Reference Figure 1 and Figure 2 The defect detection mechanism 2 includes a detection box 21, which is fixedly connected to the frame 1, and the detection box 21 is provided with a feed inlet 211 and a discharge outlet 212 for the feeding mechanism 12 to pass through.

[0042] And: an X-ray detection component 22, fixedly installed in the detection box 21, signal-connected to the signal output end of the first sensing module, for receiving the first sensing signal and outputting the scanned image data; an image processor, data-connected to the signal input end of the X-ray detection component 22, for receiving the scanned image data and comparing it, and outputting a marking signal when the scanned image is abnormal; a marking component 23, fixedly installed on the outer wall of the detection box 21, and located at the discharge port 212, for receiving the marking signal and marking the carrier 6.

[0043] When the feeding mechanism 12 transports the carrier 6 to the X-ray detection component 22 in the detection box 21, the X-ray detection component 22 scans the LED on the carrier 6 and outputs the scanned image. After comparison and processing by the image processor, if there is a defect in the glue point, the image processor can control the marking component 23 to mark the carrier 6, so as to facilitate the operator to identify the carrier 6 with defective glue points and improve the convenience of the operator in using the dispensing device.

[0044] It should be noted that the X-ray detection component 22 is composed of an X-ray tube, an intensifier, an industrial camera, etc., which can scan the LED on the carrier 6 and convert it into image output. The image processor can receive image data and process it for comparison. These are all existing technologies and will not be elaborated here.

[0045] Reference Figure 1 and Figure 2 The marking component 23 includes: a photosensitive color-changing label 232, which is fixedly mounted on the carrier 6; an ultraviolet emitter 231, which is fixedly mounted on the body of the detection box 21 and is located above the discharge port 212, and is connected to the signal output terminal of the image processor for receiving the marking signal and emitting ultraviolet rays.

[0046] The photochromic label 232 will change color when exposed to ultraviolet light and will remain so for a period of time before returning to normal. When there is a defect in the glue spot on the LED on the carrier board 6, the ultraviolet emitter 231 emits ultraviolet light, and the feeding mechanism 12 continuously transports the carrier board 6 through the ultraviolet emitter 231, which can cause the photochromic label 232 on the carrier board 6 to change color. The operator can determine whether there is a defective glue spot on the LED on the carrier board 6 by observing the color of the photochromic label 232 on the carrier board 6, and classify the carrier boards 6 with defective glue spots for screening, which can effectively improve the convenience and efficiency of detecting LED glue spot defects.

[0047] In addition, the photosensitive color-changing label 232 can be restored to its original color after changing color for a period of time and can be recycled.

[0048] Reference Figure 1 and Figure 2 The first sensing module adopts the first infrared counter-radiation sensor 4, and the first infrared counter-radiation sensor 4 is located between the feed port 211 and the dispensing mechanism 11; the first infrared counter-radiation sensor 4 includes a first transmitting end 41 and a first receiving end 42 fixedly mounted on the frame 1, and the first transmitting end 41 and the first receiving end 42 are located on both sides of the feeding mechanism 12; the signal output end of the first receiving end 42 is signal-connected with a single-chip microcomputer, and the signal output end of the single-chip microcomputer is signal-connected with the signal input end of the X-ray detection component 22.

[0049] When the carrier plate 6 is transported to between the first transmitting end 41 and the first receiving end 42 through the feeding mechanism 12, the infrared rays emitted by the first transmitting end 41 cannot be received by the first receiving end 42, and the first receiving end 42 outputs a high-level signal. After the single-chip microcomputer recognizes the high-level signal, it controls the operation of the X-ray detection component 22, thereby achieving the technical effect of automatically sensing the carrier plate 6 and automatically starting the X-ray detection component 22.

[0050] In addition, the first infrared radiation sensor 4 and the single chip microcomputer can control the X-ray detection component 22 to start and then shut down intermittently, which can reduce the operating time of the X-ray detection component 22 and save production costs.

[0051] Reference Figure 1 and Figure 2 The second sensing module adopts a second infrared counter-radiation sensor 5, and the second infrared counter-radiation sensor is located on the side of the ultraviolet emitter away from the discharge port 212; the second infrared counter-radiation sensor 5 includes a second transmitting end 51 and a second receiving end 52 fixedly mounted on the frame 1, and the second transmitting end 51 and the second receiving end 52 are located on both sides of the feeding mechanism 12; the signal output end of the second receiving end 52 is signal-connected to the signal input end of the buzzer 3.

[0052] When the LED on the carrier board 6 is detected by X-ray scanning and sent out through the feeding mechanism 12, the carrier board 6 is blocked between the second transmitting end 51 and the second receiving end 52. The infrared rays emitted by the second transmitting end 51 cannot be received by the receiving end. The receiving end outputs a high-level signal. After receiving the high-level signal, the buzzer 3 emits a warning sound, which can prompt the operator to remove the carrier board 6.

[0053] The implementation principle of an LED dispensing device in an embodiment of the present application is as follows: by using an X-ray detection component 22, an image processor, an ultraviolet emitter 231 and a photosensitive color-changing label 232 on a carrier board 6 in combination with each other, a technical effect of automatically performing X-ray scanning detection on the LED glue dots on the carrier board 6 can be achieved. The image obtained by the scanning detection is compared via an image processor, and it can automatically determine whether there are defects in the LED glue dots on the carrier board 6, and mark the carrier board 6 with the defective glue dots LED, so that the operator can classify and screen the carrier board 6 with the defective glue dots LED, which can effectively improve the convenience and efficiency of detecting defects in LED glue dots and save the manpower and time required for defect detection of LED glue dots.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An LED dispensing device, characterized in that: The invention comprises a frame (1); and: A first sensing module, fixedly mounted on the frame (1), located at an outlet side of the glue dispensing mechanism (11), and used for sensing the carrier plate (6) outputted by the glue dispensing mechanism and outputting a first sensing signal; A defect detection mechanism (2) is fixedly mounted on the frame (1), located on a side of the carrier plate (6) sensing module away from the dispensing mechanism (11), and is signal-connected to a signal output end of the carrier plate (6) sensing module, and is used to receive the first sensing signal and start; A second sensing module, fixedly mounted on the frame (1), located on a side of the defect detection mechanism (2) away from the dispensing mechanism (11), and used for detecting the carrier plate (6) that has passed through the defect detection mechanism (2) and is sent out, and outputting a second sensing signal; A buzzer (3) is fixedly mounted on the frame (1) and is signal-connected to the signal output end of the second sensing module, and is used to receive the second sensing signal and emit a prompt sound.

2. The LED dispensing device according to claim 1, characterized in that: The defect detection mechanism (2) comprises a detection box (21), the detection box (21) is fixedly connected to the frame (1), and the detection box (21) is provided with a feed inlet (211) and a discharge outlet (212) for the feeding mechanism (12) to pass through; as well as: An X-ray detection component (22) is fixedly installed in the detection box (21), signal-connected to the signal output end of the first sensing module, and is used to receive the first sensing signal and output scanned image data; An image processor, data-connected to a signal input terminal of the X-ray detection component (22), configured to receive and compare the scanned image data, and output a marking signal when the scanned image is abnormal; The marking component (23) is fixedly mounted on the outer wall of the detection box (21) and is located at the discharge port (212), and is used to receive the marking signal and mark the carrier plate (6).

3. The LED dispensing device according to claim 2, characterized in that: The marking component (23) comprises: A photosensitive color-changing label (232) is fixedly mounted on the carrier plate (6); The ultraviolet emitter (231) is fixedly mounted on the body of the detection box (21) and is located above the discharge port (212). It is signal-connected to the signal output end of the image processor and is used to receive the marking signal and emit ultraviolet rays.

4. The LED dispensing device according to claim 2, characterized in that: The first sensing module comprises a first infrared radiation sensor (4), and the first infrared radiation sensor (4) is located between the feed port (211) and the glue dispensing mechanism (11); The first infrared counter-radiation sensor (4) comprises a first transmitting end (41) and a first receiving end (42) fixedly mounted on the frame (1), and the first transmitting end (41) and the first receiving end (42) are located on both sides of the feeding mechanism (12); The signal output end of the first receiving end (42) is signal-connected to a single-chip microcomputer, and the signal output end of the single-chip microcomputer is signal-connected to the signal input end of the X-ray detection component (22).

5. The LED dispensing device according to claim 3, characterized in that: The second sensing module comprises a second infrared radiation sensor (5), and the second infrared radiation sensor is located on a side of the ultraviolet emitter away from the discharge port (212); The second infrared counter-radiation sensor (5) comprises a second transmitting end (51) and a second receiving end (52) fixedly mounted on the frame (1), and the second transmitting end (51) and the second receiving end (52) are located on both sides of the feeding mechanism (12); The signal output end of the second receiving end (52) is signal-connected to the signal input end of the buzzer (3).

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