Double-layer feeding coil returning line

Abstract

The utility model discloses a double-layer feeding disc returning line which comprises a double-layer conveying line and an automatic disc returning mechanism, the double-layer conveying line comprises an upper-layer conveying line and a lower-layer disc returning line, the front end of the double-layer conveying line is in butt joint with a sorting counting machine, and the rear end of the double-layer conveying line is in butt joint with the automatic disc returning mechanism. A machining area is arranged on the upper-layer conveying line of the double-layer conveying line, machining equipment is arranged beside the machining area, and the machining equipment conducts machining operation on the upper-layer conveying line. The double-layer conveying line is in butt joint with the sorting and counting machine, full PCBs are conveyed through the upper-layer conveying line, and corresponding machining procedures are carried out on the PCBs passing through a machining area through the machining equipment in the conveying process, so that picking of the PCBs in the conveying process is reduced, the production efficiency is improved, and the production cost is reduced. The situation that the surface of the PCB or a packaging film wrapping the PCB is scratched or broken is avoided, and the appearance requirement of the whole product is met.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB automated production and processing, in particular to a double-layer feeding and returning line. Background Art

[0002] There are currently three solutions on the market for connecting sorting points to close packaging machines:

[0003] 1. A sorting and counting machine sorts and counts PCBs, separating qualified (OK) from defective (NG) PCBs. The OK PCBs are placed on a tray. When the tray on the tray is full, the tray descends to discharge the PCBs. A conveyor section extends from the tray to serve as a temporary storage area for sorted OK PCBs. PCBs sorted by the sorting and counting machine are manually transferred to the trays of the close-fitting packaging machine for close-fitting packaging. This solution relies on manual handling, which is labor-intensive, increases operator hours, and raises overall production costs. It is also inefficient and difficult to meet the requirements of large-scale production activities.

[0004] 2. A sorting and counting machine performs sorting and counting, separating qualified (OK) PCBs from defective (NG) PCBs. The OK PCBs are placed on the OK feed table. When the tray on the OK feed table is full, the OK feed table descends to discharge the PCBs. A conveyor section extends from the OK feed table to serve as a temporary storage section for the sorted OK PCBs. An automatic material picker then mechanically transfers the PCBs sorted by the sorting and counting machine to the tray of the close-fitting packaging machine for close-fitting packaging. This solution has a problem: the close-fitting packaging tray requires bubble wrap of the appropriate size in advance. If the sorted PCBs are transferred to the tray in piles and then the suction device is removed, the bubble wrap on the tray can be easily scratched, affecting the packaging quality and even causing scratches on the surface of the PCBs, resulting in a poor appearance.

[0005] 3. There is also a solution of empty tray reflow, but it cannot be directly connected to the sorting and counting machine. It is still necessary to manually move the sorted PCBs to the tray of the hot packing machine.

[0006] Therefore, the existing technology has defects and needs to be improved. Utility Model Content

[0007] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a double-layer feeding and returning line.

[0008] The technical solution of the utility model is as follows: a double-layer feeding return line is provided, comprising: a double-layer transport line, and an automatic return mechanism docked with the rear end of the double-layer transport line, the double-layer transport line comprises an upper transport line and a lower return line, the front end of the double-layer transport line is docked with a sorting and counting machine, the rear end of the double-layer transport line is docked with the automatic return mechanism, the lifting limit positions of the automatic return mechanism correspond to the height positions of the upper transport line and the lower return line of the double-layer transport line, and are flush with the transport surface, a processing area is provided on the upper transport line of the double-layer transport line, processing equipment is provided next to the processing area, and the processing equipment performs processing operations on the upper transport line.

[0009] Furthermore, the upper transport line and the lower return line of the double-layer transport line are respectively provided with a feeding conveyor belt and a return conveyor belt, and the feeding conveyor belt and the return conveyor belt are both distributed along the transport direction of the double-layer transport line.

[0010] Furthermore, the upper transport line of the double-layer transport line is divided into a docking section and a processing section, the docking section is docked with the sorting and counting machine, the processing area is set at the processing section, and the processing equipment is set next to the processing section.

[0011] Furthermore, each processing section on the upper transport line and the automatic disk return mechanism are provided with a vertical conveyor belt, and the vertical conveyor belt is guided in the direction of the processing equipment.

[0012] Furthermore, the automatic return mechanism includes: a return frame connected to the double-layer transport line, a return lift platform that moves up and down in the middle of the return frame, a return lift motor arranged at the bottom of the return lift platform, an output gear connected to the output end of the return lift motor, and a rack arranged on the return frame, the output gear and the rack are engaged with each other, and a return conveyor line is arranged on the return lift platform.

[0013] Furthermore, the automatic return mechanism further includes a cutting mechanism, and the cutting mechanism is arranged above the automatic return mechanism.

[0014] Furthermore, the processing equipment includes a close packaging mechanism, which includes a feed line, a heating zone and a discharge line arranged beside the double-layer transport line, and the feed line, heating zone and discharge line are arranged in sequence along the transport direction of the upper transport line.

[0015] Furthermore, the processing equipment also includes an automatic desiccant placement mechanism, and the automatic desiccant placement mechanism is arranged beside the feeding line.

[0016] Furthermore, the processing equipment also includes a humidity card automatic placement mechanism, and the humidity card automatic placement mechanism is arranged beside the feeding line.

[0017] By adopting the above solution, the utility model connects the double-layer transport line with the sorting and counting machine, transports the full board of PCB boards through the upper transport line, and performs corresponding processing steps on the PCB boards passing through the processing area through the processing equipment during transportation. In this way, the picking of PCB boards during transportation is reduced, and scratches or breaks on the surface of the PCB boards or the packaging film covering the PCB boards are avoided, thereby ensuring the appearance requirements of the overall product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the present utility model.

[0019] Figure 2 It is a structural diagram of the automatic return mechanism. DETAILED DESCRIPTION

[0020] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] See also Figure 1 The utility model provides a double-layer feeding and returning line, comprising: a double-layer transport line 1, and an automatic returning mechanism 2 docked with the rear end of the double-layer transport line 1, the double-layer transport line 1 comprises an upper transport line 11 and a lower returning line 12, the front end of the double-layer transport line 1 is docked with a sorting and counting machine, and the rear end of the double-layer transport line 1 is docked with the automatic returning mechanism 2, the lifting and lowering limit positions of the automatic returning mechanism 2 correspond to the height positions of the upper transport line 11 and the lower returning line 12 of the double-layer transport line 1, and are flush with the transport surface, a processing area 10 is provided on the upper transport line 11 of the double-layer transport line 1, and processing equipment is provided next to the processing area 10, and the processing equipment performs processing operations on the upper transport line 11.

[0022] During operation, after the sorting and counting machine completes sorting of qualified (OK) PCB boards, it transports the full trays of qualified PCB boards to the upper transport line 11 of the double-layer transport line 1 for transportation. While the upper transport line 11 is transporting the PCB boards, they enter the processing area 10, where the processing equipment performs the corresponding processing steps on the currently transported PCB boards. Simultaneously, after processing is completed, the PCB boards are transported to the automatic return tray mechanism 2, where they are unloaded. The automatic return tray mechanism 2 is then activated, causing it to move downward and to a position flush with the lower return tray line 12 of the double-layer transport line 1. The empty trays are then moved to the lower return tray line 12, and then transported to the sorting and counting machine via the lower return tray line 12 for sorting and placement of the next round of qualified PCB boards. The utility model connects the double-layer transport line 1 with the sorting and counting machine, transports full boards of PCB boards through the upper transport line 11, and performs corresponding processing steps on the PCB boards passing through the processing area 10 through the processing equipment during the transportation process, thereby reducing the picking of PCB boards during the transportation process, avoiding scratches or breaks on the surface of the PCB boards or the packaging film covering the PCB boards, and ensuring the appearance requirements of the overall product.

[0023] In some embodiments, the upper transport line 11 and the lower return line 12 of the double-layer transport line 1 are respectively provided with a feed conveyor belt 13 and a return conveyor belt 14, and both the feed conveyor belt 13 and the return conveyor belt 14 are arranged along the transport direction of the double-layer transport line 1. When the upper transport line 11 is transporting a tray loaded with PCB boards, the feed conveyor belt 13 is activated, thereby transporting the tray forward through the friction between the belt surface and the bottom surface of the tray, thereby meeting the transportation requirements of the tray. Similarly, when the lower transport line is transporting an empty tray, the return conveyor belt 14 is activated, thereby transporting the tray forward through the friction between the belt surface and the bottom surface of the tray, thereby meeting the transportation requirements of the tray.

[0024] In some embodiments, the upper transport line 11 of the double-layer transport line 1 is divided into a docking section and a processing section. The docking section is docked with the sorting and counting machine, the processing area 10 is located in the processing section, and the processing equipment is located next to the processing section. By dividing the upper transport line 11 of the double-layer transport line 1 into the docking section and the processing section, after a tray loaded with PCB boards is delivered from the sorting and counting machine, it is first transported through the docking section. This allows operators to manually place the corresponding consumables on the tray or adjust the placement of the PCB boards on the tray to meet the requirements of subsequent processing steps.

[0025] In some embodiments, each processing section of the upper transport line 11 and the automatic tray return mechanism 2 are equipped with a vertical conveyor belt 15, which is oriented in the direction of the processing equipment. With the vertical conveyor belt 15 perpendicular to the feeding direction, the trays are fed into the processing equipment, thereby preventing damage to the packaging film or the surface of the tightly packed PCBs on the trays caused by repeated picking by the robot.

[0026] In some embodiments, see Figure 2 The automatic return mechanism 2 includes: a return frame 21 connected to the double-layer transport line 1, a return lift platform 22 that moves up and down in the middle of the return frame 21, a return lift motor 23 arranged at the bottom of the return lift platform 22, an output gear 24 connected to the output end of the return lift motor 23, and a rack 25 arranged on the return frame 21. The output gear 24 and the rack 25 are engaged with each other, and a return conveyor line 26 is provided on the return lift platform 22.

[0027] When a fully loaded fixture moves onto the automatic return tray mechanism 2, an external robotic arm removes the PCBs from the tray. The return tray lift motor 23 then activates, causing the output gear 24 to rotate. The meshing of the output gear 24 with the rack lowers the return tray conveyor line 26 on the return tray lift 22 to the same level as the lower return tray line 12. The return tray conveyor line 26 is then activated, and the empty tray is moved to the lower return tray line 12. The return tray lift motor 23 then reverses, causing the output gear 24 to rotate in the opposite direction. The meshing of the output gear 24 with the rack raises the return tray conveyor line 26 on the return tray lift 22 to the same level as the upper conveyor line 11.

[0028] In some embodiments, the automatic tray return mechanism 2 also includes a cutting mechanism, which is positioned above the automatic tray return mechanism 2. When a tray full of PCBs is moved onto the automatic tray return mechanism 2, the cutting mechanism is activated to cut the products, thereby separating the PCBs on the tray. While manual cutting is typically used in the prior art, the present invention utilizes a cutting mechanism to effectively improve overall work efficiency and meet the needs of large-scale production activities.

[0029] In some embodiments, the processing equipment includes a close-fitting packaging mechanism, which includes a feed line, a heating zone, and a discharge line, which are arranged adjacent to the double-layer conveyor line 1. The feed line, heating zone, and discharge line are arranged sequentially along the conveying direction of the upper conveyor line 11. The feed line delivers the materials required for close-fitting packaging to the jig, where a packaging film is applied to the PCB. The packaging film is then heated in the heating zone, causing it to shrink and tightly wrap around the PCB.

[0030] In some embodiments, the processing equipment further includes an automatic desiccant placement mechanism, located adjacent to the feed line. Prior to close-fitting packaging, the automatic desiccant placement mechanism places the desiccant on or adjacent to the PCBs on the tray. After close-fitting packaging, the desiccant and PCBs are encased in the packaging film. The desiccant absorbs moisture from the packaging film, preventing moisture from adhering to the PCBs and potentially damaging the PCB surface or circuit components thereon.

[0031] In some embodiments, the processing equipment further includes an automatic humidity card placement mechanism, located adjacent to the feed line. Prior to close-fitting packaging, the automatic humidity card placement mechanism places the humidity card on or next to the PCB on the tray. After close-fitting packaging, the humidity card and PCB are encased in the packaging film. The humidity card monitors the humidity within the film, preventing damage to the PCB surface or circuit components on the PCB due to excess moisture in the film.

[0032] In summary, the present invention connects the double-layer transport line 1 with the sorting and counting machine, transports the full board of PCB boards through the upper transport line 11, and performs corresponding processing steps on the PCB boards passing through the processing area 10 through the processing equipment during the transportation process, thereby reducing the picking of PCB boards during transportation, avoiding scratches or breaks on the surface of the PCB boards or the packaging film covering the PCB boards, and ensuring the appearance requirements of the overall product.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A double-layer feeding and returning line, characterized in that: include: A double-layer transport line and an automatic return mechanism docked with the rear end of the double-layer transport line, the double-layer transport line includes an upper transport line and a lower return line, the front end of the double-layer transport line is docked with a sorting and counting machine, and the rear end of the double-layer transport line is docked with the automatic return mechanism, the lifting and lowering limit positions of the automatic return mechanism correspond to the height positions of the upper transport line and the lower return line of the double-layer transport line, and are flush with the transport surface, a processing area is provided on the upper transport line of the double-layer transport line, processing equipment is provided next to the processing area, and the processing equipment performs processing operations on the upper transport line.

2. The double-layer feeding and returning line according to claim 1 is characterized in that: The upper transport line and the lower return line of the double-layer transport line are respectively provided with a feeding conveyor belt and a return conveyor belt, and the feeding conveyor belt and the return conveyor belt are both distributed along the transport direction of the double-layer transport line.

3. The double-layer feeding return line according to claim 1 or 2, characterized in that: The upper transport line of the double-layer transport line is divided into a docking section and a processing section. The docking section is docked with the sorting and counting machine. The processing area is set at the processing section, and the processing equipment is set next to the processing section.

4. The double-layer feeding and returning line according to claim 3 is characterized in that: Each processing section on the upper transport line and the automatic disk return mechanism are provided with a vertical conveyor belt, and the vertical conveyor belt is guided in the direction of the processing equipment.

5. The double-layer feeding and returning line according to claim 1 is characterized in that: The automatic return mechanism includes: a return frame connected to the double-layer transport line, a return lift platform that moves up and down in the middle of the return frame, a return lift motor arranged at the bottom of the return lift platform, an output gear connected to the output end of the return lift motor, and a rack arranged on the return frame, the output gear and the rack are engaged with each other, and a return conveyor line is arranged on the return lift platform.

6. The double-layer feeding and returning line according to claim 1 is characterized in that: The automatic disk-returning mechanism further includes a cutting mechanism, and the cutting mechanism is arranged above the automatic disk-returning mechanism.

7. The double-layer feeding and returning line according to claim 1 is characterized in that: The processing equipment includes a close packaging mechanism, which includes a feed line, a heating zone and a discharge line arranged beside the double-layer transport line. The feed line, heating zone and discharge line are arranged in sequence along the transport direction of the upper transport line.

8. The double-layer feeding and returning line according to claim 7 is characterized in that: The processing equipment further comprises a desiccant automatic placement mechanism, which is arranged beside the feeding line.

9. The double-layer feeding and returning line according to claim 7, characterized in that: The processing equipment further comprises a humidity card automatic placement mechanism, and the humidity card automatic placement mechanism is arranged beside the feeding line.

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