PCB conveying mechanism and etching system

Abstract

The utility model relates to a PCB conveying mechanism and an etching system, and relates to the technical field of PCB production equipment.The PCB conveying mechanism comprises two racks, an upper conveying assembly, a lower conveying assembly and a transmission assembly, and the two racks are arranged side by side in the length direction and extend in the width direction; the two ends of the upper conveying assemblies are arranged on the rack, and the multiple upper conveying assemblies are arranged side by side in the width direction of the rack. The lower conveying assemblies are arranged at the lower ends of the upper conveying assemblies and correspond to the upper conveying assemblies in a one-to-one mode, and the two ends of each lower conveying assembly are arranged on the rack. The transmission assemblies are arranged on the outer side of the rack, the PCBs are arranged between the upper conveying assembly and the lower conveying assembly and abut against the upper conveying assembly, and the transmission assemblies can control the lower conveying assembly to rotate so that the PCBs can move in the width direction. According to the spraying device, the problem that the PCB is difficult to convey due to the fact that the PCB is not pressed in the conveying process at present and deviates seriously in the spraying process can be solved.

Description

Technical Field

[0001] This application relates to the field of PCB board production equipment technology, and in particular to a PCB board conveying mechanism and etching system. Background Technology

[0002] With the improvement of production efficiency, PCB large conveyor units have begun to be widely used. Compared with traditional units, large conveyor units can produce more products at the same time; however, the size of individual products is getting smaller and smaller, which brings great challenges to the conveying of PCB production boards.

[0003] Existing technology suffers from straightness deviations in each conveyor roller and variations in the thickness of each production plate. This results in some production plates not being held down by the upper rollers during the conveying process. Under the spraying action, the production plates shift significantly, causing them to collide and stack together, making it impossible to continue production. Utility Model Content

[0004] This application provides a PCB board conveying mechanism to solve the problem that the PCB board is not pressed down during conveying, resulting in serious displacement during spraying and making it difficult to convey.

[0005] A PCB board conveying mechanism includes:

[0006] The frame consists of two spaced apart along its length and both extending along its width.

[0007] The upper conveying components are arranged side by side along their width and have both ends located on the frame;

[0008] A lower conveying assembly is located at the lower end of the upper conveying assembly and corresponds one-to-one with the upper conveying assembly; both ends of the lower conveying assembly are located on the frame.

[0009] The transmission components are provided in multiple ways and are located on the outside of the frame. The PCB board is disposed between the upper conveying component and the lower conveying component and is supported by the upper conveying component. The transmission components can control the rotation of the lower conveying component, thereby causing the PCB board to move in the width direction.

[0010] By adopting the above technical solution, the frame provides a stable support structure for the upper and lower conveying components. Multiple upper and lower conveying components are mounted on the frame in a corresponding manner, and the transmission component controls the rotation of the lower conveying component, ensuring that PCBs of different thicknesses can be held abutted between the upper and lower conveying components and moved along the width direction with minimal deviation. This structural design achieves efficient and stable PCB conveying, meeting the basic requirements of PCB conveying on the production line and is applicable to PCBs of different thicknesses.

[0011] In one embodiment, the PCB board conveying mechanism further includes a support base, which is provided in multiple locations on the corresponding frame. The two ends of the upper conveying component and the lower conveying component are respectively rotatably connected to the corresponding support base. The transmission component is located on the side of the support base away from the lower conveying component and can control the rotation of the upper conveying component and the lower conveying component.

[0012] By adopting the above technical solution, the support base ensures that both ends of the upper and lower conveying components are securely fixed to the frame, enhancing the stability of the conveying components. Simultaneously, the transmission component is located on the side of the support base away from the lower conveying component, facilitating control of the rotation of the upper and lower conveying components. This results in a more rational overall layout of the conveying mechanism, simplifying maintenance and operation, and further improving the reliability and practicality of the conveying mechanism.

[0013] In one embodiment, the upper conveying assembly includes an upper roller shaft, movable rollers, and a tight-fitting positioning sleeve. A support seat is respectively passed through both ends of the upper roller shaft. Multiple movable rollers are provided and are sequentially fitted onto the upper roller shaft along the length direction. Each movable roller can press down on the PCB board. The tight-fitting positioning sleeve is fitted onto both ends of the upper roller shaft.

[0014] By adopting the above technical solution, it is possible to ensure that the PCB board is in close contact with the movable roller during the conveying process, avoiding slippage and ensuring the stability and accuracy of the conveying. The tight-fitting positioning sleeve is installed at both ends of the upper roller shaft, which serves to fix and position the movable roller, preventing axial displacement of the movable roller during the conveying process, further improving the working stability of the upper conveying assembly. The transmission assembly can control the rotation of the upper roller shaft.

[0015] In one embodiment, the lower conveying assembly includes a lower roller shaft and a lower roller. The two ends of the lower roller shaft are fixed to the support base. The lower roller is sleeved on the lower roller shaft. The PCB board is disposed between the movable roller and the lower roller and can be supported and conveyed.

[0016] By adopting the above technical solution, the PCB board is clamped between the movable roller and the lower roller. When the lower roller shaft rotates under the drive of the transmission component, the lower roller rotates accordingly, thereby driving the PCB board to move along the width direction. This structural design enables the upper and lower conveying components to work together to achieve efficient conveying of the PCB board, and it is simple in structure, easy to manufacture and maintain.

[0017] In one embodiment, the movable roller is made of an elastic material such as rubber or plastic.

[0018] By adopting the above technical solution, the movable roller is tightly fixed to the upper roller shaft. The elastic material can better adapt to changes in the surface shape and thickness of the PCB board, ensuring that the movable roller can firmly press against PCB boards of different thicknesses. At the same time, the rotation of the upper roller shaft drives the movable roller to rotate, providing sufficient friction to drive the PCB board to move. In addition, the elastic material also plays a cushioning role, reducing damage to the PCB board surface and protecting the quality of the PCB board.

[0019] In one embodiment, the movable roller has a hollow shaft hole inside, and the diameter of the shaft hole is larger than the diameter of the upper roller shaft.

[0020] By adopting the above technical solution, this design also allows the movable roller to have a certain amount of room to move on the upper roller shaft, which can better adapt to the slight undulations and unevenness of the PCB board during the transportation process. When facing PCB boards of different thicknesses, the movable roller can always be in close contact with the PCB board surface by relying on gravity or the force generated by the contact between the upper roller shaft and the movable roller.

[0021] In one embodiment, the transmission assembly includes a drive member and a plurality of transmission members, the transmission members being rotatably connected to the corresponding lower roller shaft and the upper roller shaft, the drive member being able to drive the transmission members to rotate, thereby causing the lower roller shaft and the upper roller shaft to rotate.

[0022] By adopting the above technical solution, this structural design achieves effective power transmission, enabling the lower conveying component to rotate as required, providing power support for the conveying of PCB boards, and ensuring the normal operation of the conveying mechanism.

[0023] In one embodiment, the drive element includes a drive rod disposed at one end of the frame away from the upper conveying assembly and extending in the width direction, the drive rod being used to drive the transmission element to rotate.

[0024] By adopting the above technical solution, the drive rod of the drive component extends along the width direction and is located at the end of the frame away from the upper conveying assembly, and is used to drive the transmission component to rotate. This layout allows the drive rod to easily drive multiple transmission components, realize the synchronous rotation of multiple lower conveying assemblies, ensure the stability and consistency of the PCB board during the conveying process, and improve the conveying efficiency.

[0025] In one embodiment, there are two drive rods, the frame is disposed between the two drive rods, and the transmission element is spaced apart from the two drive rods along the width direction.

[0026] By adopting the above technical solution, the dual-drive rod design can provide a stronger and more uniform driving force, ensuring that the lower conveying component can rotate stably and efficiently, avoiding conveying problems caused by insufficient or uneven driving force of a single drive rod, and further improving the reliability and conveying quality of the conveying mechanism.

[0027] This application also provides an etching system, including nozzles and a PCB board conveying mechanism, wherein the nozzles are disposed at both ends of the PCB board conveying mechanism along the height direction and arranged along the width direction.

[0028] By adopting the above technical solution, the conveying mechanism can accurately transport the PCB board to the etching area, while the nozzle can spray the PCB board with etching solution. The two work together to realize the integration of automatic conveying of the PCB board and etching operation during the etching process, which improves the automation level and production efficiency of the etching system and ensures the continuity and stability of the etching process.

[0029] In summary, this application includes at least one beneficial effect:

[0030] 1. The frame provides a stable support structure for the upper and lower conveyor components. Multiple upper and lower conveyor components are mounted one-to-one on the frame, and the transmission component controls the rotation of the lower conveyor component, allowing the PCB board to be held between the upper and lower conveyor components and move along the width direction. This structural design achieves efficient and stable PCB board conveying, meeting the basic requirements of PCB board conveying on the production line and improving production efficiency.

[0031] 2. The movable roller is tightly fixed to the upper roller shaft. The elastic material can better adapt to changes in the surface shape and thickness of the PCB board, ensuring that the movable roller can firmly press against PCB boards of different thicknesses. Simultaneously, the rotation of the upper roller shaft drives the movable roller to rotate, providing sufficient friction to move the PCB board. Furthermore, the elastic material also acts as a buffer, reducing damage to the PCB board surface and protecting its quality.

[0032] 3. The dual drive rod design provides a stronger and more uniform driving force, ensuring that the lower conveying component can rotate stably and efficiently, avoiding conveying problems caused by insufficient or uneven driving force of a single drive rod, and further improving the reliability and conveying quality of the conveying mechanism. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of a PCB board conveying mechanism provided in an embodiment of this application;

[0034] Figure 2This is a front view structural schematic diagram of a PCB board conveying mechanism provided in an embodiment of this application;

[0035] Figure 3 This is a top view of a PCB board conveying mechanism provided in an embodiment of this application;

[0036] Figure 4 This is a schematic diagram of the structure of an etching system provided in an embodiment of this application;

[0037] Figure 5 This is a top view schematic diagram of a transmission component provided in the second embodiment of this application, with the component located on both sides.

[0038] Explanation of reference numerals in the attached drawings: 1. PCB board conveying mechanism; 11. Frame; 12. Upper conveying assembly; 121. Upper roller shaft; 122. Movable roller; 1221. Shaft hole; 123. Fitting positioning sleeve; 13. Lower conveying assembly; 131. Lower roller shaft; 132. Lower roller; 14. Transmission assembly; 141. Drive component; 1411. Drive rod; 1412. First bevel gear; 142. Transmission component; 1421. Second bevel gear; 1422. First spur gear; 1423. Second spur gear; 15. PCB board; 16. Support base; 2. Etching system; 21. Nozzle. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-5 The PCB board conveying mechanism provided in this application will be described in further detail.

[0040] Example 1

[0041] Please see Figure 1-5 The PCB board conveying mechanism 1 provided in this application embodiment includes a frame 11, an upper conveying component 12, a lower conveying component 13, and a transmission component 14.

[0042] like Figure 1 As shown, two frames 11 are arranged side by side along the length direction and both extend along the width direction. Specifically, the frame 11 is the basic frame of the entire conveying mechanism, made of high-strength steel, and has good rigidity and stability.

[0043] like Figure 2As shown, the upper conveying assembly 12 has multiple components arranged side-by-side at both ends of the frame 11 along its width direction. The lower conveying assembly 13 is located at the lower end of the upper conveying assembly 12 along its height direction and corresponds one-to-one with the upper conveying assembly 12. Both ends of the lower conveying assembly 13 are also located on the frame 11. The PCB board conveying mechanism 1 also includes multiple support seats 16, which are respectively located on two frames 11 such that two support seats 16 correspond along their length direction. The ends of the upper conveying assembly 12 and the lower conveying assembly 13 are rotatably connected to their corresponding support seats 16. Specifically, the upper conveying assembly 12 includes multiple upper roller shafts 121 arranged parallel along its width direction. Each upper roller shaft 121 has both ends passing through a support seat 16 and fixed to the frame 11. Movable rollers 122 are fitted onto the upper roller shafts 121, and their number can be adjusted according to actual needs. In this embodiment, the movable roller 122 has a hollow shaft hole 1221 inside. The diameter of the shaft hole 1221 is slightly larger than the diameter of the upper roller shaft 121 to facilitate the movement of the movable roller 122. At the same time, the diameter of the shaft hole 1221 of each movable roller 122 can be different to accommodate PCB boards 15 of different thicknesses and hold them in place. Tight-fitting positioning sleeves 123 are provided at both ends of the upper roller shaft 121 to prevent the movable roller 122 from falling off during operation.

[0044] The lower conveying assembly 13 also includes multiple lower roller shafts 131 arranged along the width direction. Each lower roller shaft 131 has two ends passing through a support base 16 and fixed to the frame 11. The upper roller shaft 121 and the lower roller shaft 131, corresponding to each other along the height direction, are fixed to the same support base 16 at the same end. The lower roller 132 is sleeved on the lower roller shaft 131. The movable roller 122 abuts against the lower roller 132 but does not contact the upper roller shaft 121. During conveying, PCB boards 15 of different thicknesses will abut against the movable roller 122, causing the movable roller 122 to move upward until it abuts against the upper roller shaft 121. By gravity or the force exerted by the upper roller shaft 121 on the movable roller 122, the PCB board 15 is pressed tightly between the movable roller 122 and the lower roller 132 to prevent the PCB board 15 from shifting.

[0045] like Figure 3As shown, multiple transmission components 14 are provided and located on the outside of the frame 11. The PCB board 15 is located between the upper conveying component 12 and the lower conveying component 13 and is supported by the upper conveying component 12. The transmission components 14 can control the rotation of the upper conveying component 12 and the lower conveying component 13, thereby causing the PCB board 15 to move along the width direction. Specifically, the transmission components 14 include a drive component 141 and multiple transmission components 142. Each transmission component 142 is rotatably connected to its corresponding lower roller shaft 131 and upper roller shaft 121. The drive component 141 is responsible for driving the transmission component 142 to rotate, thereby driving the lower roller shaft 131 and the upper roller shaft 121 to rotate. In this embodiment, the driving member 141 may include a driving rod 1411 and a first bevel gear 1412. The driving rod 1411 is located at the end of the frame 11 away from the upper conveying assembly 12 and extends along the width direction. The first bevel gear 1412 is sleeved on the driving rod 1411. Rotation of the driving rod 1411 causes the first bevel gear 1412 to rotate, thereby transmitting power to the transmission member 142. The transmission member 142 may include a second bevel gear 1421, a first spur gear 1422, and a second spur gear 1423. The second bevel gear 1421 is sleeved on the lower roller shaft 131 near the end of the driving rod 1411 and can interact with the first bevel gear 1412. The first bevel gear 1421 is rotatably connected to the second roller shaft 131 and the drive rod 1411. The first spur gear 1422 is sleeved on the lower roller shaft 131 and is located between the second bevel gear 1421 and the frame 11. The second spur gear 1423 is sleeved on the upper roller shaft 121 and is rotatably connected to the first spur gear 1422. When the drive rod 1411 rotates, the first bevel gear 1412 can drive the second bevel gear 1421 and the first spur gear 1422 to rotate, and then the second spur gear 1423 rotates, so that the upper roller shaft 121 and the lower roller shaft 131 both rotate, and then the lower roller 132 rotates, thereby moving the PCB board 15.

[0046] like Figure 4 As shown, this application also provides an etching system 2, which, by adding nozzles 21, enables real-time cleaning and processing of the PCB board 15 during the conveying process, thereby improving production efficiency and product quality. Specifically, multiple nozzles 21 are arranged side-by-side at both ends of the PCB board conveying mechanism 1 along the height direction and along the width direction. There are gaps between adjacent upper conveying components 12 and between adjacent lower conveying components 13. The nozzles of the nozzles 21 face these gaps and are aimed at the upper and lower surfaces of the PCB board 15, spraying cleaning liquid or chemical reagents to clean and process the PCB board 15 in real time, preventing short circuits between circuits in the produced PCB board 15. The flow rate and spray angle of the nozzles 21 are adjustable to adapt to different cleaning and processing needs. In addition, a recovery device can be installed below the conveying mechanism to collect the waste liquid after cleaning, facilitating subsequent treatment and environmentally friendly discharge.

[0047] The implementation principle of this embodiment is as follows: the upper conveying component 12 moves through the movable roller 122 to support the PCB board 15, reducing the occurrence of slippage; the lower conveying component 13 drives the transmission component 142 and the lower roller 132 to rotate through the drive component 141, thereby pushing the PCB board 15 forward. The two work together to keep the PCB board 15 in a horizontal state during the conveying process, avoiding deviation and jamming.

[0048] By combining the PCB board conveying mechanism 1 with the nozzle 21, this embodiment not only achieves efficient conveying of the PCB board 15, but also completes its cleaning and processing during the conveying process, greatly simplifying the production process and improving production efficiency and product quality.

[0049] Example 2

[0050] The difference between this embodiment and the above embodiments is that the movable roller 122 is made of elastic materials such as rubber or plastic. Specifically, the movable roller 122 is in close contact with the upper roller shaft 121 and abuts against the lower roller 132, so that when PCB boards 15 of different thicknesses are between the movable roller 122 and the lower roller 132, the movable roller 122 retracts and uses a reaction force to hold the PCB board 15, preventing it from shifting; in addition, when the drive rod 1411 drives the upper roller shaft 121 and the lower roller shaft 131 to rotate through the transmission component 142, the movable roller 122 can also rotate with the upper roller shaft 121, so that the PCB board 15 is simultaneously driven by the movable roller 122 and the lower roller 132 to move along the width direction and perform etching processing.

[0051] like Figure 5 As shown, there can be two drive rods 1411, with the frame 11 located between the two drive rods 1411. The transmission component 142 can be positioned along the width direction between either drive rod 1411 and the frame 11, allowing the transmission component 142 to be located at both ends of the lower conveying assembly 13. In this embodiment, the transmission components 142 are spaced apart along the width direction at both ends of the lower conveying assembly 13. This arrangement ensures uniform power transmission, avoids conveying problems caused by insufficient or uneven power from a single drive rod 1411, and prevents potential wear and tear caused by all transmission components 142 being located on one side of the frame 11.

[0052] The implementation principle of this embodiment is as follows: by using elastic material for the movable roller 122, the conveying mechanism can flexibly cope with PCB boards 15 of different thicknesses, thus expanding the scope of application and ensuring that the PCB boards 15 can be supported by the movable roller 122. At the same time, the movable roller 122 can also rotate and convey the PCB boards 15 together with the lower roller 132, thereby improving production efficiency.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A PCB board conveying mechanism, characterized by, The application relates to a PCB conveying mechanism (1) which comprises the following parts: a rack (11) which is provided with two racks along the length direction and extends along the width direction; a plurality of upper conveying assemblies (12) which are provided side by side along the width direction and are arranged at the two ends of the rack (11); a plurality of lower conveying assemblies (13) which are arranged at the lower ends of the upper conveying assemblies (12) and correspond to the upper conveying assemblies (12) one by one, the two ends of the lower conveying assemblies (13) are arranged at the rack (11); a plurality of driving assemblies (14) which are arranged outside the rack (11), a PCB (15) is arranged between the upper conveying assemblies (12) and the lower conveying assemblies (13) and is abutted by the upper conveying assemblies (12), the driving assemblies (14) can control the rotation of the lower conveying assemblies (13) so as to move the PCB (15) along the width direction.

2. The PCB board conveying mechanism according to claim 1, wherein, The PCB conveying mechanism (1) further comprises a plurality of supporting seats (16) which are arranged at the rack (11) corresponding to the supporting seats (16), the two ends of the upper conveying assemblies (12) and the lower conveying assemblies (13) are rotatably connected to the supporting seats (16) corresponding to the upper conveying assemblies (12) and the lower conveying assemblies (13), the driving assemblies (14) are arranged at the side of the supporting seats (16) which is far away from the lower conveying assemblies (13) and can control the rotation of the upper conveying assemblies (12) and the lower conveying assemblies (13).

3. The PCB board conveying mechanism according to claim 2, wherein, The upper conveying assembly (12) comprises an upper roller shaft (121), a movable roller (122) and a tightly-fitted positioning sleeve (123), the two ends of the upper roller shaft (121) are respectively arranged through one supporting seat (16), the movable roller (122) is provided with a plurality of parts which are sequentially arranged on the upper roller shaft (121) along the length direction, each movable roller (122) can press the PCB (15), the tightly-fitted positioning sleeve (123) is arranged at the two ends of the upper roller shaft (121).

4. The PCB board conveying mechanism according to claim 3, wherein, The lower conveying assembly (13) comprises a lower roller shaft (131) and a lower roller (132), the two ends of the lower roller shaft (131) are fixed to the supporting seat (16), the lower roller (132) is arranged on the lower roller shaft (131), the PCB (15) is arranged between the movable roller (122) and the lower roller (132) and can be abutted and conveyed.

5. The PCB board conveying mechanism according to claim 4, wherein, The movable roller (122) is made of rubber or plastic.

6. The PCB board conveying mechanism according to claim 4, wherein, The movable roller (122) is internally hollow and is provided with an axle hole (1221), the diameter of the axle hole (1221) is larger than the diameter of the upper roller shaft (121).

7. The PCB board conveying mechanism according to claim 4, wherein, The driving assembly (14) comprises a driving part (141) and a plurality of driving parts (142), the driving part (142) is rotatably connected to the lower roller shaft (131) and the upper roller shaft (121) corresponding to the driving part (142), the driving part (141) can drive the rotation of the driving part (142) so as to drive the rotation of the lower roller shaft (131) and the upper roller shaft (121).

8. The PCB board conveying mechanism according to claim 7, wherein, The driving member (141) comprises a driving rod (1411) arranged at one end of the rack (11) away from the upper conveying assembly (12) and extending along the width direction, and the driving rod (1411) is used for driving the transmission member (142) to rotate.

9. The PCB board transport mechanism of claim 8, wherein, The driving rod (1411) is provided with two, and the rack (11) is arranged between the two driving rods (1411), and the transmission member (142) is arranged along the width direction and is spaced apart from the two driving rods (1411).

10. An etching system comprising a lance (21) and a PCB board transport mechanism (1) according to any one of claims 1-9, characterized in that, The spray pipe (21) is arranged at both ends of the PCB board conveying mechanism (1) along the height direction and arranged along the width direction.

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