PCB Board Through-Furnace Fixture Detection Machine

Abstract

The invention discloses a detection machine for a PCB board furnace loading fixture, which comprises a frame, an electric control box, a human-machine interface, a plurality of pairs of conveying tracks, a plurality of pairs of track conveying mechanisms, a plurality of pairs of plate feeding driving walking mechanisms and a plurality of pairs of blowing detection mechanisms. The conveying tracks are arranged at the rear end of the upper part of the frame. The plate feeding driving walking mechanisms and the blowing detection mechanisms are sequentially arranged on the same side of the conveying tracks. The number of the conveying tracks, the track conveying mechanisms, the plate feeding driving walking mechanisms and the blowing detection mechanisms is equal and they correspond to each other one by one. The blowing nozzle blows out gas to lift the product to check whether the PCB board is separated from the fixture, and the laser is used for collection and sent to the human-machine interface for automatic detection judgment. With the assistance of automatic feeding and discharging, there is no need for naked-eye observation, the detection efficiency is high, the labor intensity is small, the labor cost is low, the harm to eyes is small, the safety and health hazards are low, it is not easy to have false detection or misdetection, the detection accuracy rate is high, and it does not affect the production efficiency and normal production of the production line.

Description

Technical Field

[0001] The present invention belongs to the field of mechanical equipment, and particularly relates to an automatic detector for a PCB board through-furnace fixture. Background Art

[0002] When a PCB board goes through the furnace, it needs to be placed in a through-furnace fixture. Whether the PCB board is installed flat and firmly in the through-furnace fixture is very important for the through-furnace operation. Therefore, it is necessary to detect the PCB board through-furnace fixture. At present, the detection of the PCB board through-furnace fixture is mostly completed by manual visual inspection by inspectors, without specific detection equipment. This manual visual inspection method can meet certain usage requirements, but there are also major defects. Manual visual inspection has low efficiency, high labor intensity, high labor cost, great harm to the eyes due to long-term visual inspection, large potential safety and health hazards, easy occurrence of false detection, missed detection and wrong detection, low accuracy rate, frequent rework detection required for detection, easy occurrence of the springboard phenomenon when false detection and wrong detection occur, great impact on the through-furnace operation, and affect the production efficiency and normal production of the production line.

[0003] The technical problem to be solved by the present invention is to provide a detector for a PCB board through-furnace fixture that does not require manual visual inspection, has high detection efficiency, low labor intensity, low labor cost, little harm to the eyes, low potential safety and health hazards, is not prone to false detection, missed detection and wrong detection, has a high detection accuracy rate, and does not affect the production efficiency and normal production of the production line. Summary of the Invention

[0004] To solve the problems of the prior art such as low efficiency of manual visual inspection, high labor intensity, high labor cost, great harm to the eyes due to long-term visual inspection, large potential safety and health hazards, easy occurrence of false detection, missed detection and wrong detection, low accuracy rate, frequent rework detection required for detection, easy occurrence of the springboard phenomenon when false detection and wrong detection occur, great impact on the through-furnace operation, and affect the production efficiency and normal production of the production line, the present invention adopts the following technical solutions:

[0005] The present invention provides a detector for a PCB board through-furnace fixture, which includes a frame, an electric control box, a human-machine interface, several pairs of conveying tracks, several pairs of track conveying mechanisms, several pairs of plate feeding driving walking mechanisms and several pairs of blowing detection mechanisms. The electric control box is arranged at the bottom of the frame, the human-machine interface is arranged at the front end of the frame and stores the qualified product standard information of the PCB board through-furnace fixture. The several pairs of conveying tracks are arranged at the upper rear end of the frame. The track conveying mechanism is arranged below the conveying track. The plate feeding driving walking mechanism and the blowing detection mechanism are sequentially arranged on the same side of the conveying track and are spaced apart from each other by a certain distance. The number of the conveying tracks, the track conveying mechanism, the plate feeding driving walking mechanism and the blowing detection mechanism is equal and they correspond to each other one by one.

[0006] As an improvement of the present invention, the number of the conveying tracks is more than one pair.

[0007] As a further improvement of the present invention, the plate feeding driving and walking mechanism includes a driving motor, a guiding motor plate, an entrance photoelectric detector, a driving gear, seven transitional driven gears, five plate feeding rollers and a pair of pressing rubber wheels. The guiding motor plate is arranged on the frame through a pair of plug mounting plates. The driving motor is arranged at the lower part inside the guiding motor plate. The entrance photoelectric detector is arranged at one edge of the guiding motor plate. The driving gear is arranged at the lower part outside the guiding motor plate and is in transmission connection with the output shaft of the driving motor. The transitional driven gears are arranged above the driving gear and are in meshing transmission connection with the driving gear. The plate feeding rollers are arranged at the upper part inside the guiding motor plate and are connected with the transitional driven gears through transmission shafts. The pressing rubber wheels are arranged at the front end of the upper part inside the guiding motor plate.

[0008] As a further improvement of the invention, the air blowing and detecting mechanism includes an air blowing nozzle, a position-in-place photoelectric detector and a laser detector. The air blowing nozzle is arranged on the frame through an air blowing support plate. The air blowing nozzle is in air path communication with an external air source through an air delivery pipe. The laser detector is arranged above the frame through a photoelectric support and is in signal communication with a human-machine interface. The position-in-place photoelectric detector is arranged at one edge of the photoelectric support and is in signal communication with the laser detector.

[0009] As a further improvement of the present invention, the track conveying mechanism includes a plurality of belt pulleys, a belt, a belt supporting plate, a tensioning wheel adjusting block and an exit photoelectric detector. The plurality of belt pulleys are respectively fixedly arranged at different positions inside the conveying track. The belt sequentially bypasses the frontmost plate feeding roller and the belt pulleys. The belt supporting plate is arranged inside the conveying track and is located below the belt. The exit photoelectric detector is arranged at the frontmost end of the conveying track.

[0010] The beneficial effects of the present invention are as follows: The air blowing nozzle blows out gas to lift the product to check whether the PCB board is separated from the jig, and the laser collects and sends it to the human-machine interface for judgment and automatic detection. Supplemented by automatic feeding and discharging, there is no need for naked-eye observation, the detection efficiency is high, the labor intensity is small, the labor cost is low, the harm to the eyes is small, the safety and health hazards are low, it is not easy to have false detection or misdetection, the detection accuracy rate is high, and it does not affect the production efficiency and normal production of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0012] Figure 2 It is a partially enlarged schematic diagram of the plate feeding driving and walking mechanism in the present invention.

[0013] Figure 3 It is a partially enlarged schematic diagram of the air blowing and detecting mechanism in the present invention.

[0014] Figure 4 This is a partially enlarged schematic view of the track conveying mechanism in the present invention. Detailed implementation manners

[0015] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0016] Please refer to Figure 1 , a PCB board passing through furnace fixture detection machine, including a frame 1, an electric control box 2, a human-machine interface 3, several pairs of conveying tracks 4, several pairs of track conveying mechanisms 5, several pairs of plate feeding driving walking mechanisms 6 and several pairs of air blowing detection mechanisms 7. The electric control box 2 is arranged at the bottom of the frame 1. The human-machine interface 3 is set at the front end of the frame 1 and stores the qualified product standard information of the PCB board passing through furnace fixture, and is used for comparing and judging the detection information collected in real time. The several pairs of conveying tracks 4 are arranged at the upper rear end of the frame 1. The track conveying mechanism 5 is arranged below the conveying track 4 and drives the conveying track 4 to move. The plate feeding driving walking mechanism 6 and the air blowing detection mechanism 7 are sequentially arranged on the same side of the conveying track 4 and are spaced apart from each other by a certain distance. The number of the conveying tracks 4 is equal to that of the track conveying mechanism 5, the plate feeding driving walking mechanism 6 and the air blowing detection mechanism 7 and they correspond to each other one by one. One pair of conveying tracks corresponds to one pair of track conveying mechanisms, one plate feeding driving walking mechanism and one pair of air blowing detection mechanisms. Among them, the number of the conveying tracks is more than one pair. Figure 1 The number of the conveying tracks in [[ ]] is two pairs, but it is not limited thereto. It can be configured according to specific use and can be one pair, three pairs or even more.

[0017] During detection, the sheet material should first enter the detection area, such as Figure 2As shown in the figure, the plate feeding driving and walking mechanism 6 includes a driving motor 61, a guiding motor plate 62, an entrance photoelectric detector 63, a driving gear 64, seven transitional driven gears 65, five plate feeding rollers 66 and a pair of pressing rubber wheels 67. The guiding motor plate 62 is arranged on the frame 1 through a pair of plug mounting plates 67. The driving motor 61 is arranged at the lower part inside the guiding motor plate 62. The entrance photoelectric detector 63 is arranged at one edge of the guiding motor plate 62 and is in signal communication with the driving motor 61. The driving gear 64 is arranged at the lower part outside the guiding motor plate 62 and is in transmission connection with the output shaft of the driving motor 61. The transitional driven gears 65 are arranged above the driving gear 64 and are in meshing transmission connection with the driving gear 64. The plate feeding rollers 66 are arranged at the upper part inside the guiding motor plate 62 and are connected with the transitional driven gears 65 through transmission shafts. The pressing rubber wheels 67 are arranged at the front end of the upper part inside the guiding motor plate 62. When the plate material approaches the equipment, the entrance photoelectric detector first detects that there is material and sends a signal to the driving motor. The driving motor starts and drives the driving gear to rotate. While the driving gear rotates, it drives the transitional driven gears to rotate. The rotation of the transitional driven gears drives the plate feeding rollers to rotate, and the rotation of the plate feeding rollers can convey the plate material forward. At the same time, the pressing rubber wheels press the plate material to keep it flat, which is beneficial to the normal progress of subsequent detection.

[0018] After the plate material is conveyed in, detection operations are carried out, such as Figure 3 As shown in the figure, the air blowing detection mechanism 7 includes an air blowing nozzle 71, a in-place photoelectric detector 72 and a laser detector 73. The air blowing nozzle 71 is arranged on the frame 1 through an air blowing support plate 74. The air blowing nozzle 71 is in air path communication with an external air source through an air delivery pipe. The laser detector 73 is arranged above the frame 1 through an optoelectronic support 75 and is in signal communication with the human-machine interface 3. The in-place photoelectric detector 72 is arranged at one edge of the optoelectronic support 75 and is in signal communication with the laser detector 73. When the plate material is conveyed in place, the in-place photoelectric detector can detect it and send a signal to the laser detector. The laser detector starts to collect data. At the same time, the external air source supplies air and the air blowing nozzle blows air to lift the plate material. By setting the air blowing volume, the detection requirements can be met. The laser detector collects whether the PCB board is separated from the furnace passing fixture after the plate material is lifted, and sends the collected information to the human-machine interface for comparison with the standard information. If it is within the standard range, it is a qualified product; if it exceeds the range, it is an NG defective product. Automatic detection does not require visual observation. After the detection is completed, the plate material needs to flow out, as shown in Figure 4As shown in the figure, the track conveying mechanism 5 includes a plurality of pulleys 51, a belt 52, a belt support plate 53, a tension pulley adjustment block 54, and an outlet photoelectric detector 55. The plurality of pulleys 51 are respectively fixed at different positions inside the conveying track 4. The belt 52 sequentially bypasses the frontmost plate feeding roller 66 and the pulleys 51. The belt support plate 53 is arranged inside the conveying track 4 and is located below the belt 52. The outlet photoelectric detector 55 is arranged at the frontmost end of the conveying track. The belt is driven to rotate by the frontmost plate feeding roller, and the sheet material is driven to be conveyed forward by the rotation of the belt. When it is conveyed to near the outlet photoelectric detector, it will be detected, and a signal will be sent to the blanking mechanism of the next process equipment for blanking. The belt is tensioned and adjusted through the tension pulley adjustment block to ensure smoother conveying.

[0019] The beneficial effects of the present invention are as follows: The blowing nozzle blows out gas to lift the product to check whether the PCB board is separated from the fixture, and it is automatically detected by collecting through laser and sending it to the human-machine interface for judgment. With the assistance of automatic feeding and discharging, there is no need for naked-eye observation, the detection efficiency is high, the labor intensity is small, the labor cost is low, the harm to the eyes is small, the safety and health hazards are low, it is not easy to have false detection or misdetection, the detection accuracy rate is high, and it does not affect the production efficiency and normal production of the production line.

[0020] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by those of ordinary skill in the art shall be regarded as not departing from the patent scope of the present invention.

Claims

1. A PCB board through-furnace fixture detection machine, characterized in that: It includes a frame (1), an electric control box (2), a human-machine interface (3), several pairs of conveying tracks (4), several pairs of track conveying mechanisms (5), several pairs of plate feeding driving and walking mechanisms (6) and several pairs of air blowing and detecting mechanisms (7). The electric control box (2) is arranged at the bottom of the frame (1). The human-machine interface (3) is set at the front end of the frame (1) and stores the qualified product standard information of the PCB board passing through the furnace fixture. The several pairs of conveying tracks (4) are arranged side by side at the rear end of the upper part of the frame (1). The track conveying mechanism (5) is arranged below the conveying track (4). The plate feeding driving and walking mechanism (6) and the air blowing and detecting mechanism (7) are sequentially arranged on the same side of the conveying track (4) and are spaced apart from each other by a certain distance. The number of the conveying tracks (4) is equal to that of the track conveying mechanism (5), the plate feeding driving and walking mechanism (6) and the air blowing and detecting mechanism (7) and they correspond to each other one by one. The air blowing and detecting mechanism (7) includes an air blowing nozzle (71), a position photoelectric detector (72) and a laser detector (73). The air blowing nozzle (71) is arranged on the frame (1) through an air blowing support plate (74). The air blowing nozzle (71) is communicated with an external air source air path through an air pipe. The laser detector (73) is arranged above the frame (1) through an optoelectronic support (75) and is in signal communication with the human-machine interface (3). The position photoelectric detector (72) is arranged at one side edge of the optoelectronic support (75) and is in signal communication with the laser detector (73).

2. The PCB board furnace loading fixture detection machine according to claim 1, characterized in that: The conveying track (4) is more than one pair.

3. The PCB board furnace loading fixture detection machine according to claim 1, characterized in that: The plate feeding driving and walking mechanism (6) includes a driving motor (61), a guiding motor plate (62), an entrance photoelectric detector (63), a driving gear (64), seven transitional driven gears (65), five plate feeding rollers (66) and a pair of pressing rubber wheels (67). The guiding motor plate (62) is arranged on the frame (1) through a pair of plug mounting plates (68). The driving motor (61) is arranged at the lower part inside the guiding motor plate (62). The entrance photoelectric detector (63) is arranged at one end edge of the guiding motor plate (62) and is in signal communication with the driving motor (61). The driving gear (64) is arranged at the lower part outside the guiding motor plate (62) and is in transmission connection with the output shaft of the driving motor (61). The transitional driven gears (65) are arranged above the driving gear (64) and are in meshing transmission connection with the driving gear (64). The plate feeding rollers (66) are arranged at the upper part inside the guiding motor plate (62) and are connected with the transitional driven gears (65) through transmission shafts. The pressing rubber wheels (67) are arranged at the front end of the upper part inside the guiding motor plate (62).

4. The PCB board furnace passing fixture detection machine according to claim 1, wherein: The track conveying mechanism (5) includes a plurality of belt pulleys (51), a belt (52), a belt support plate (53), a tension pulley adjustment block (54), and an exit photoelectric detector (55). The plurality of belt pulleys (51) are respectively fixedly arranged at different positions inside the conveying track (4). The belt (52) sequentially bypasses the frontmost plate feeding roller (66) and the belt pulleys (51). The belt support plate (53) is arranged inside the conveying track (4) and below the belt (52). The exit photoelectric detector (55) is arranged at the frontmost end of the conveying track (4).

Images