Automatic turn-over device and method for printed circuit board production

Abstract

The invention belongs to the technical field of printed circuit board production, and particularly relates to an automatic turn-over device and method for printed circuit board production, and the turn-over device comprises a rack, a board feeding conveying part, a board discharging conveying part and a turn-over part; the overturning part comprises an overturning shaft, a sliding disc, a supporting rod, a sliding adjusting mechanism, a first bearing and an overturning mechanism; according to the invention, the position of each sliding disc on the overturning shaft is independently adjusted through the sliding adjusting mechanism, so that the position of the sliding disc can be adjusted according to the specific shape of each printed circuit board and the specific position of a welding spot on the printed circuit board, and the supporting rod can avoid the position of the welding spot for supporting; therefore, the welding spots on the printed circuit board are protected, and the production quality of the printed circuit board is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of printed circuit board production, and in particular relates to an automatic turning device and method for printed circuit board production. Background Art

[0002] During the double-sided processing of printed circuit boards (PCBs), the substrate needs to be flipped over to complete the placement, soldering, or inspection of the front and back sides. However, existing mechanical flipping devices for PCBs have the following problems in actual operation:

[0003] 1. Clamping method damages printed circuit boards: Existing mechanical devices mostly use rigid clamps or pneumatic clamps, which can easily exert excessive pressure on the edges or surface components of the printed circuit board, causing deformation of the substrate or cracking of solder joints.

[0004] 2. Poor size adaptability: The fixed structure is difficult to adapt to the flipping requirements of printed circuit boards of different sizes or special shapes, and the fixtures need to be replaced frequently, affecting the flexibility of the production line.

[0005] 3. Insufficient flipping accuracy: Some equipment is driven by ordinary motors, and there is a deviation in the flipping angle, resulting in inaccurate alignment of the printed circuit board and downstream equipment.

[0006] However, the positions of solder joints on different printed circuit boards are different. If different types of printed circuit boards are flipped on the same flipping device, the solder joints on the printed circuit boards will come into contact and rub against the conveying components and the flipping components when the printed circuit boards are flipped, thereby causing damage to the solder joints. Summary of the Invention

[0007] To address the shortcomings of the prior art, the present invention proposes an automatic flipping device and method for printed circuit board production. The present invention primarily addresses the problem of existing printed circuit board flipping devices being unable to adjust, which results in solder joints on the printed circuit boards contacting and rubbing against conveying and flipping components during flipping, leading to damage to the solder joints.

[0008] The technical solution adopted by the present invention to solve its technical problems is as follows: the present invention provides an automatic flipping device for printed circuit board production, comprising a frame, a board feed conveying component, a board discharge conveying component and a flipping component; the board feed conveying component is used to feed the printed circuit board into the flipping component; the board discharge conveying component is used to feed the printed circuit board out of the flipping component; the flipping component is used to flip the printed circuit board; the flipping component comprises a flipping shaft, a sliding disk, a support rod, a sliding adjustment mechanism, a first bearing and a flipping mechanism; both ends of the flipping shaft are mounted on the middle part of the frame through the first bearing; the board feed conveying component and the board discharge conveying component are respectively provided at both ends of the frame; a sliding groove is provided axially on the flipping shaft; a group of sliding disks are sleeved on the flipping shaft; the sliding disks slide axially along the flipping shaft, and a limiting protrusion is provided on the sliding disk to slide in the sliding groove; the support rods are evenly spaced on the outer cylindrical surface of each sliding disk; the sliding adjustment mechanism is used to drive each sliding disk to move individually; the flipping mechanism is used to drive the flipping shaft to rotate; and the flipping mechanism is connected to the frame.

[0009] Preferably, the sliding adjustment mechanism includes an adjusting disk, a supporting disk and a first adjusting rod; the adjusting disk and the supporting disk are respectively mounted on both ends of the flip shaft; the adjusting disk and the supporting disk are fixedly connected to the flip shaft; the first adjusting rod is arranged through the adjusting disk and the supporting disk; one end of the first adjusting rod is rotatably connected to the supporting disk; the other end of the first adjusting rod is rotatably connected to the adjusting disk, and a rotating part for inputting torque is provided on the end face of the end; each of the first adjusting rods drives one of the sliding disks to move through a screw pair.

[0010] Preferably, the specific structure of the in-plate conveying component and the out-plate conveying component is the same, and the in-plate conveying component and the out-plate conveying component are symmetrically arranged with the flip component as the center; the in-plate conveying component includes a belt conveying unit, a rotating slide shaft, a conveying drive unit, an adjusting plate, a support plate, a support slide shaft and a second adjusting rod; both ends of the support slide shaft are connected to the frame; both ends of the support slide shaft are respectively sleeved on the adjusting plate and the support plate; a group of the belt conveying units are arranged between the adjusting plate and the support plate; the belt conveying unit is simultaneously slidably connected to the support slide shaft and the rotating slide shaft, and the rotating slide shaft is used to drive the conveying wheel of the belt conveying unit to rotate; one end of the rotating slide shaft is driven to rotate by the conveying drive unit; the conveying drive unit is connected to the adjusting plate; a group of second adjusting rods is penetrated between the adjusting plate and the support plate; one end of the second adjusting rod is rotatably connected to the support plate; the other end of the second adjusting rod is rotatably connected to the adjusting plate, and a torsion portion for inputting torque is provided on the end surface of the end; each second adjusting rod is adjusted to move one of the belt conveying units by a screw pair.

[0011] Preferably, the flipping component is connected to the in-board conveying component and the out-board conveying component through a synchronous transmission component; the synchronous transmission component is used to enable the first adjustment rod in the flipping component and the second adjustment rod in the in-board conveying component and the out-board conveying component to automatically achieve synchronous rotation.

[0012] Preferably, the synchronous transmission component includes a driving gear shaft, a synchronous gear shaft, a casing, a torque flexible shaft and a synchronous plug-in connector; a torque output structure that can be plugged into the rotating part of the first adjusting rod is provided at one end of the driving gear shaft; gear teeth are provided in the middle of the driving gear shaft; a torque input structure that can be connected to an external tool is provided at the other end of the driving gear shaft; one synchronous gear shaft is provided on each side of the driving gear shaft; both ends of the synchronous gear shaft are rotatably connected in the casing; an inner hexagonal boss structure that cooperates with the inner hexagonal groove on the adjusting disk is provided on the periphery of the torque output structure of the driving gear shaft near the casing; one end of the synchronous gear shaft is connected to the synchronous plug-in connector through the torque flexible shaft; the end of the synchronous plug-in shaft is provided with a torque output structure that can be plugged into the torsional part of the second adjusting rod.

[0013] Preferably, the torque flexible shaft includes an elastic spiral shaft, a plug-in ring and a sleeve; the elastic spiral shaft is rolled from an elastic metal material; one end of the elastic spiral shaft is fixedly connected to the driving gear shaft through the boss at the end of the driving gear shaft; the other end of the elastic spiral shaft is fixedly connected to the end of the synchronous plug-in connector through the boss at the end of the synchronous plug-in connector; the sleeve is arranged outside the elastic spiral shaft; one end of the sleeve is fixedly connected to the housing; the other end of the sleeve is fixedly connected to the end face of the plug-in ring; the plug-in ring is sleeved on the synchronous plug-in connector and is rotatably connected to the synchronous plug-in connector; the plug-in ring has an inner hexagonal shape and can be plugged into the inner hexagonal groove on the adjustment plate.

[0014] Preferably, the torque flexible shaft further includes a supporting flexible rod; the supporting flexible rod is an elastic solid structure; the supporting flexible rod is arranged in the spiral tube structure of the elastic spiral shaft, and the outer diameter of the supporting flexible rod is in close contact with the inner diameter of the spiral tube structure of the elastic spiral shaft.

[0015] Preferably, both ends of the supporting sliding shaft are rotatably connected to the frame via second bearings.

[0016] Preferably, a limiting structure is provided on the side of the supporting slide shaft close to the flipping component; a limiting block is provided below the limiting structure; a screw is provided in the through hole of the limiting structure and connected to the threaded hole on the limiting block; and the limiting block is fixedly connected to the frame.

[0017] An automatic flipping method for producing a printed circuit board comprises the following steps:

[0018] S1: First, the displacement amount that needs to be adjusted for each support rod in the flip component is determined according to the position of the solder joints on the printed circuit board to be produced;

[0019] S2: Connect the end of the driving gear shaft of the synchronous transmission component to the first adjusting rod, and then connect the two synchronous plug connectors to the second adjusting rod end of the corresponding position of the board infeed conveyor component and the second adjusting rod end of the corresponding position of the board outfeed conveyor component respectively;

[0020] S3: Use an Allen wrench or other torque input tool to plug into the end of the first adjusting rod, then rotate the Allen wrench to drive the first adjusting rod to rotate, and the first adjusting rod drives the sliding plate to move along the sliding groove on the flip shaft through the screw pair, thereby driving the support rod on the sliding plate to move the displacement required to be adjusted;

[0021] S4: During the adjustment of the support rod, the driving gear shaft transmits the torque to the second adjusting rod of the corresponding inlet and outlet conveying components through the synchronous gear shaft, the torque flexible shaft and the synchronous plug connector in sequence;

[0022] S5: The second adjusting rod drives the belt conveyor unit to move along the supporting sliding shaft and the rotating sliding shaft through the screw pair;

[0023] S6: After the position of a support rod is adjusted to the required displacement, remove the synchronous transmission component;

[0024] S7: Repeat the above steps S2-S6 to complete the adjustment of the positions of all support rods;

[0025] S8: The controller controls the board feeding conveying component through an electrical signal to convey the printed circuit board after the previous process to the flipping component;

[0026] S9: The controller then controls the flip mechanism in the flip component through an electrical signal to drive the flip axis to rotate a certain angle, so that the support rods below the printed circuit board prop up the printed circuit board. At the same time, the printed circuit board on the bottom support rod on one side of the board delivery conveyor component is placed on the board delivery conveyor component.

[0027] S10: The controller then controls the board delivery conveying component through electrical signals to deliver the flipped printed circuit board to the next process.

[0028] The beneficial effects of the present invention are as follows:

[0029] 1. The present invention uses a sliding adjustment mechanism to individually adjust the position of each sliding plate on the flip axis, thereby being able to adjust the position of the sliding plate according to the specific shape of each printed circuit board and the specific location of the solder joints thereon, so that the support rods can avoid the locations of the solder joints for support, thereby protecting the solder joints on the printed circuit board and improving the production quality of the printed circuit boards.

[0030] 2. The present invention is connected to the rotating part of the end of the first adjusting rod through an Allen wrench or other torque input tool, and then the first adjusting rod is driven to rotate by rotating the Allen wrench, and then the sliding disk is driven to move along the sliding groove on the flip axis through the screw pair between the first adjusting rod and the sliding disk, and then the position of each sliding disk can be adjusted individually by rotating the first adjusting rod corresponding to the sliding disk, so that the support rod on the sliding disk can avoid the position of the solder joint for support, thereby protecting the solder joint on the printed circuit board, and improving the production quality of the printed circuit board.

[0031] 3. The present invention sets a synchronous transmission component between the flipping component and the board inlet conveying component and the board outlet conveying component, so that the first adjustment rod in the flipping component and the second adjustment rod in the board inlet conveying component and the board outlet conveying component can automatically achieve synchronous rotation. This not only greatly shortens the preparation time required for the printed circuit board changeover, but also prevents the risk of collision due to different adjustment amounts of the flipping component and the board inlet conveying component or the board outlet conveying component due to separate adjustment, thereby improving the production efficiency of the printed circuit board and the convenience of the flipping device.

[0032] 4. The present invention rotates the driving gear shaft through an external tool, and the driving gear shaft drives the two synchronous gear shafts to rotate synchronously through the gear teeth, and then transmits the torque to the synchronous plug connector through the two torque soft shafts, thereby realizing the simultaneous and synchronous driving of the second adjusting rod of the board feed conveying component and the second adjusting rod of the board discharge conveying component, thereby realizing the simultaneous and synchronous adjustment of the positions of the belt conveying unit of the board feed conveying component and the belt conveying unit of the board discharge conveying component at corresponding positions, thereby greatly shortening the preparation time required for the conversion of printed circuit boards, and preventing the risk of collision due to different adjustment amounts of the flipping component and the board feed conveying component or the board discharge conveying component due to separate adjustment, thereby improving the production efficiency of printed circuit boards and the convenience of the flipping device. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below with reference to the accompanying drawings.

[0034] Figure 1 It is a schematic diagram of the overall structure of the turning device of the present invention;

[0035] Figure 2 This is a front view of the turning device of the present invention;

[0036] Figure 3 is a top view of the turning device of the present invention;

[0037] Figure 4 It is a structural diagram of the middle flip component;

[0038] Figure 5 It is a structural diagram of the middle flip mechanism;

[0039] Figure 6 It is a structural schematic diagram of the plate discharging conveying component in the present invention;

[0040] Figure 7 It is a schematic diagram of the connection between the limiting structure and the limiting block in the present invention;

[0041] Figure 8 This is a schematic diagram of the overall connection of the synchronous transmission components in the present invention;

[0042] Figure 9 yes Figure 8 A partial enlarged view of point A in the middle;

[0043] Figure 10 yes Figure 8 A partial enlarged view of point B in the middle;

[0044] In the figure: frame 1, limit block 11, plate feeding conveying component 2, belt conveyor unit 21, rotating slide shaft 22, conveying drive unit 23, adjustment plate 24, support plate 25, support slide shaft 26, limit structure 261, second adjusting rod 27, second bearing 28, plate discharging conveying component 3, flipping component 4, flipping shaft 41, sliding disk 42, support rod 43, sliding adjustment mechanism 44, adjustment disk 441, support disk 442, first adjusting rod 443, first bearing 45, flipping mechanism 46, synchronous transmission component 5, driving gear shaft 51, synchronous gear shaft 52, casing 53, torque soft shaft 54, elastic spiral shaft 541, plug ring 542, sleeve 543, support soft rod 544, synchronous plug connector 55. DETAILED DESCRIPTION

[0045] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0046] like Figures 1 to 5 As shown, an automatic flipping device for printed circuit board production includes a frame 1, a board feed conveying component 2, a board discharge conveying component 3 and a flipping component 4; the board feed conveying component 2 is used to feed the printed circuit board into the flipping component 4; the board discharge conveying component 3 is used to feed the printed circuit board out of the flipping component 4; the flipping component 4 is used to flip the printed circuit board; the flipping component 4 includes a flipping shaft 41, a sliding plate 42, a support rod 43, a sliding adjustment mechanism 44, a first bearing 45 and a flipping mechanism 46; both ends of the flipping shaft 41 are mounted on the middle part of the frame 1 through the first bearing 45; the frame 1, the inlet plate conveying component 2 and the outlet plate conveying component 3 are respectively provided at both ends; a sliding groove is provided on the flip shaft 41 along the axial direction; a group of sliding plates 42 are sleeved on the flip shaft 41; the sliding plates 42 slide axially along the flip shaft 41, and a limiting protrusion is provided on the sliding plate 42 to slide in the sliding groove; the support rods 43 are evenly spaced on the outer cylindrical surface of each sliding plate 42; the sliding adjustment mechanism 44 is used to drive each sliding plate 42 to move separately; the flip mechanism 46 is used to drive the flip shaft 41 to rotate; the flip mechanism 46 is connected to the frame 1.

[0047] The positions of solder joints on different printed circuit boards are different. Therefore, in order to prevent the solder joints on the printed circuit boards from contacting and rubbing with the conveying components and the flipping components 4 when the printed circuit boards are turned over, thereby causing damage to the solder joints, this solution uses a sliding adjustment mechanism 44 to individually adjust the position of each sliding disk 42 on the flip shaft 41, and then adjust the position of the sliding disk 42 according to the specific shape of each printed circuit board and the specific position of the solder joints thereon, so that the support rod 43 can avoid the position of the solder joints for support, thereby protecting the solder joints on the printed circuit boards and improving the production quality of the printed circuit boards.

[0048] After adjusting the supporting position of the support rod 43, continuous and automatic flipping can be performed. Specifically, the controller controls the board feeding conveying component 2 through electrical signals to convey the printed circuit board after the previous process to the flipping component 4. Then the controller controls the flipping mechanism 46 in the flipping component 4 through electrical signals to drive the flipping axis 41 to rotate a certain angle. The angle is specifically the angle between the two adjacent support rods 43. Then the support rod 43 under the printed circuit board props up the printed circuit board. At the same time, the printed circuit board on the support rod 43 at the bottom of the side of the board output conveying component 3 is placed on the board output conveying component 3. Then the controller controls the board output conveying component 3 through electrical signals to convey the flipped printed circuit board to the next process.

[0049] like Figure 4 As shown, the sliding adjustment mechanism 44 includes an adjusting disk 441, a supporting disk 442 and a first adjusting rod 443; the adjusting disk 441 and the supporting disk 442 are respectively mounted on both ends of the flip shaft 41; the adjusting disk 441 and the supporting disk 442 are both fixedly connected to the flip shaft 41; the first adjusting rod 443 is arranged between the adjusting disk 441 and the supporting disk 442; one end of the first adjusting rod 443 is rotatably connected to the supporting disk 442; the other end of the first adjusting rod 443 is rotatably connected to the adjusting disk 441, and a rotating part for inputting torque is provided on the end face of the end; each of the first adjusting rods 443 drives one of the sliding disks 42 to move through a screw pair.

[0050] By connecting the rotating part at the end of the first adjusting rod 443 with an Allen wrench or other torque input tool, the first adjusting rod 443 is driven to rotate by rotating the Allen wrench, and the sliding disk 42 is driven to move along the sliding groove on the flip shaft 41 through the screw pair between the first adjusting rod 443 and the sliding disk 42, and the position of each sliding disk 42 can be adjusted individually by rotating the first adjusting rod 443 corresponding to the sliding disk 42, so that the support rod 43 on the sliding disk 42 can avoid the position of the solder joint for support, thereby protecting the solder joint on the printed circuit board, and improving the production quality of the printed circuit board.

[0051] like Figure 6 As shown, the specific structure of the inlet plate conveying component 2 is the same as that of the outlet plate conveying component 3, and the inlet plate conveying component 2 and the outlet plate conveying component 3 are symmetrically arranged with the flip component 4 as the center; the inlet plate conveying component 2 includes a belt conveying unit 21, a rotating slide shaft 22, a conveying drive unit 23, an adjustment plate 24, a support plate 25, a support slide shaft 26 and a second adjustment rod 27; both ends of the support slide shaft 26 are connected to the frame 1; the adjustment plate 24 and the support plate 25 are respectively mounted on both ends of the support slide shaft 26; a group of the belt conveying units 21 are arranged between the adjustment plate 24 and the support plate 25; the belt conveying units 21 are simultaneously slidably connected to the support slide shaft 26 and the rotating slide shaft 22, the rotating slide shaft 22 is used to drive the conveying wheel of the belt conveyor unit 21 to rotate; one end of the rotating slide shaft 22 is driven to rotate by the conveying drive unit 23; the conveying drive unit 23 is connected to the adjusting plate 24; a group of second adjusting rods 27 are arranged between the adjusting plate 24 and the support plate 25; one end of the second adjusting rod 27 is rotatably connected to the support plate 25; the other end of the second adjusting rod 27 is rotatably connected to the adjusting plate 24, and a torsion portion for inputting torque is provided on the end face of the end; each second adjusting rod 27 adjusts one of the belt conveyor units 21 to move through a screw pair.

[0052] By connecting the torsional portion of the end of the second adjusting rod 27 with an Allen wrench or other torque input tool, the second adjusting rod 27 is driven to rotate by rotating the Allen wrench, and the belt conveyor unit 21 is driven to move along the support slide shaft 26 and the rotating slide shaft 22 by the screw pair between the second adjusting rod 27 and the belt conveyor unit 21, and the position of each belt conveyor unit 21 can be adjusted individually by the second adjusting rod 27 corresponding to the belt conveyor unit 21, so that each belt conveyor unit 21 is always between two adjacent support rods 43, and after the position of the support rod 43 is adjusted, the position of the belt conveyor unit 21 can also be adjusted, thereby ensuring that the belt conveyor unit 21 does not collide with the support rod 43, and when the conveyor belt of the belt conveyor unit 21 contacts the solder joints on the printed circuit board, the position of the belt conveyor unit 21 can be adjusted to avoid solder contact wear on the printed circuit board, thereby protecting the solder joints on the printed circuit board, thereby improving the production quality of the printed circuit board.

[0053] After the position of the belt conveyor unit 21 is adjusted, the controller controls the conveying drive unit 23 of the board inlet conveying component 2 through an electrical signal, and then the conveying drive unit 23 drives the conveying wheel of the belt conveyor unit 21 to rotate by rotating the sliding shaft 22, and then the conveyor belt of the belt conveyor unit 21 drives the printed circuit board into the flipping component 4; the flipping component 4 turns the printed circuit board over and places it on the board outlet conveying component 3, and the controller controls the conveying drive unit 23 of the board outlet conveying component 3 through an electrical signal, thereby realizing the conveying of the printed circuit board to the next process through the belt conveyor unit 21.

[0054] like Figure 4 and Figure 8 As shown, the flipping component 4 is connected to the inlet plate conveying component 2 and the outlet plate conveying component 3 through a synchronous transmission component 5; the synchronous transmission component 5 is used to enable the first adjustment rod 443 in the flipping component 4 and the second adjustment rod 27 in the inlet plate conveying component 2 and the outlet plate conveying component 3 to automatically achieve synchronous rotation.

[0055] When replacing the printed circuit board to be produced, a synchronous transmission component 5 is set between the flipping component 4 and the board inlet conveying component 2 and the board outlet conveying component 3, so that the first adjustment rod 443 in the flipping component 4 and the second adjustment rod 27 in the board inlet conveying component 2 and the board outlet conveying component 3 can automatically achieve synchronous rotation. This not only greatly shortens the preparation time required for the printed circuit board changeover, but also prevents the risk of collision due to different adjustment amounts of the flipping component 4 and the board inlet conveying component 2 or the board outlet conveying component 3 due to separate adjustment, thereby improving the production efficiency of the printed circuit board and the convenience of the flipping device.

[0056] like Figures 9 and 10 As shown, the synchronous transmission component 5 includes a driving gear shaft 51, a synchronous gear shaft 52, a casing 53, a torque flexible shaft 54 and a synchronous plug-in connector 55; one end of the driving gear shaft 51 is provided with a torque output structure that can be plugged into the rotating part of the first adjusting rod 443; the middle part of the driving gear shaft 51 is provided with gear teeth; the other end of the driving gear shaft 51 is provided with a torque input structure that can be connected to an external tool; one synchronous gear shaft 52 is provided on each side of the driving gear shaft 51; both ends of the synchronous gear shaft 52 are rotatably connected in the casing 53; the outer periphery of the torque output structure of the driving gear shaft 51 of the casing 53 is provided with an inner hexagonal boss structure that cooperates with the inner hexagonal groove on the adjusting disk 441; one end of the synchronous gear shaft 52 is connected to the synchronous plug-in connector 55 through the torque flexible shaft 54; the end of the synchronous plug-in shaft is provided with a torque output structure that can be plugged into the torsional part of the second adjusting rod 27.

[0057] When the printed circuit board is changed and converted, the synchronous transmission component is connected to the flip component 4 and the board feed conveying component 2 and the board discharge conveying component 3. Specifically, the driving gear shaft 51 is plugged into the end of the first adjusting rod 443. At the same time, the hexagonal boss structure of the housing 53 is also plugged into the hexagonal groove on the adjusting disk 441, thereby increasing stability during use. The two synchronous plug connectors 55 are respectively plugged into the end of the second adjusting rod 27 of the board feed conveying component 2 and the end of the second adjusting rod 27 of the board discharge conveying component 3. Because the support rod 43 adjusted by each first adjusting rod 443 and the belt conveyor unit 21 adjusted by the second adjusting rod 27 are one-to-one corresponding, when the driving gear shaft 51 is rotated by an external tool, the driving gear shaft 5 The two synchronous gear shafts 52 are driven to rotate synchronously through the gear teeth, and then the torque is transmitted to the synchronous plug connector 55 through the two torque flexible shafts 54, thereby achieving simultaneous and synchronous driving of the second adjustment rod 27 of the board feeding conveying component 2 and the second adjustment rod 27 of the board discharging conveying component 3, thereby achieving simultaneous and synchronous adjustment of the positions of the belt conveying unit 21 of the board feeding conveying component 2 and the belt conveying unit 21 of the board discharging conveying component 3, thereby greatly shortening the preparation time required for the conversion of printed circuit boards, and preventing the risk of collision caused by different adjustment amounts of the flipping component 4 and the board feeding conveying component 2 or the board discharging conveying component 3 due to separate adjustment, thereby improving the production efficiency of printed circuit boards and the convenience of the flipping device.

[0058] like Figures 9 and 10 As shown, the torque flexible shaft 54 includes an elastic spiral shaft 541, a plug-in ring 542 and a sleeve 543; the elastic spiral shaft 541 is made of elastic metal material; one end of the elastic spiral shaft 541 is fixedly connected to the driving gear shaft 51 through the boss at the end of the driving gear shaft 51; the other end of the elastic spiral shaft 541 is fixedly connected to the end of the synchronous plug-in connector 55 through the boss at the end of the synchronous plug-in connector 55; the sleeve 543 is arranged on the outer shell of the elastic spiral shaft 541; one end of the sleeve 543 is fixedly connected to the housing 53; the other end of the sleeve 543 is fixedly connected to the end face of the plug-in ring 542; the plug-in ring 542 is sleeved on the synchronous plug-in connector 55 and is rotatably connected to the synchronous plug-in connector 55; the plug-in ring 542 has an inner hexagonal shape and can be plugged into the inner hexagonal groove on the adjustment plate 24.

[0059] The elastic spiral shaft 541, rolled from an elastic metal material, can bend freely while stably transmitting torque, allowing the synchronous transmission component 5 to adjust the first adjustment rod 443 and the second adjustment rod 27 at different positions. This allows the synchronous transmission component 5 to effectively synchronize the turning component 4 with the infeed and outfeed conveyor components 2 and 3, thereby improving ease of use. The insertion ring 542 and sleeve 543 shield the continuously twisting elastic spiral shaft 541 through the sleeve 543 during adjustment, ensuring user safety. Lubricant can also be filled into the sleeve 543 to reduce friction between the elastic spiral shaft 541 and the inner wall of the sleeve 543.

[0060] like Figures 9 and 10 As shown, the torque flexible shaft 54 also includes a supporting flexible rod 544; the supporting flexible rod 544 is an elastic solid structure; the supporting flexible rod 544 is arranged in the spiral tube structure of the elastic spiral shaft 541, and the outer diameter of the supporting flexible rod 544 is in close contact with the inner diameter of the spiral tube structure of the elastic spiral shaft 541.

[0061] By disposing a supporting rod 544 within the elastic helical shaft 541, the supporting rod 544 supports the inner diameter of the helical tube structure of the elastic helical shaft 541. When the elastic helical shaft 541 is subjected to torque and curls inward, the internal supporting rod 544 can support the elastic helical shaft 541, thereby preventing the elastic helical shaft 541 from having slight displacement deviations due to inward contraction, thereby improving the accuracy of adjustment of the synchronous transmission component 5. However, since the supporting rod 544 cannot provide supporting force when the elastic helical shaft 541 curls outward under opposite torque, in order to achieve high-precision position adjustment during use, it is necessary to first adjust the support rod 43 and the belt conveyor unit 21 to one side of the point to be adjusted. This ensures that each time the elastic helical shaft 541 approaches the point to be adjusted, it is in an inwardly retracted state, thereby ensuring high-precision position adjustment. The supporting rod 544 can be a steel wire rope braided with elastic metal wire, or a solid elastic rod formed of a non-metallic composite material.

[0062] like Figures 6 and 7 As shown, both ends of the support slide shaft 26 are rotatably connected to the frame 1 through second bearings 28 .

[0063] After the two ends of the supporting slide shaft 26 are rotatably connected to the frame 1 through the second bearing 28, the inlet plate conveying component 2 and the outlet plate conveying component 3 can be flipped upward as a whole, and then when the support rod 43 in the flipping component 4 is adjusted separately, there is no need to worry about collision with the inlet plate conveying component 2 and the outlet plate conveying component 3 on both sides, thereby improving convenience and safety.

[0064] like Figure 7 As shown, a limiting structure 261 is provided on the side of the supporting slide shaft 26 close to the flip component 4; a limiting block 11 is provided below the limiting structure 261; a screw is provided in the through hole of the limiting structure 261 and connected to the threaded hole on the limiting block 11; the limiting block 11 is fixedly connected to the frame 1.

[0065] When the inlet and outlet conveying parts 2 and 3 need to be flipped up as a whole, the screws on the limiting structure 261 need to be unscrewed first so that the inlet and outlet conveying parts 2 and 3 can be flipped up; and when the inlet and outlet conveying parts 2 and 3 are working, they are lowered, and then the limiting structure 261 on the supporting slide shaft 26 contacts the limiting block 11, and then the screws are tightened.

[0066] like Figures 1 to 10 As shown, a method for automatically turning over printed circuit boards for production includes the following steps:

[0067] S1: First, the displacement amount that needs to be adjusted for each support rod 43 in the flip component 4 is determined according to the position of the solder joints on the printed circuit board to be produced;

[0068] S2: Connect the end of the driving gear shaft 51 of the synchronous transmission component 5 to the first adjustment rod 443, and then connect the two synchronous plug connectors 55 to the ends of the second adjustment rod 27 of the corresponding position of the board infeed conveyor component 2 and the ends of the second adjustment rod 27 of the corresponding position of the board outfeed conveyor component 3 respectively;

[0069] S3: Use an Allen wrench or other torque input tool to insert into the end of the first adjustment rod 443, then rotate the Allen wrench to rotate the first adjustment rod 443, and the first adjustment rod 443 drives the sliding plate 42 to move along the sliding groove on the tilt shaft 41 through the screw pair, thereby driving the support rod 43 on the sliding plate 42 to move the displacement required to be adjusted;

[0070] S4: During the adjustment of the support rod 43, the driving gear shaft 51 transmits the torque to the second adjusting rod 27 of the corresponding position of the infeed conveyor 2 and the second adjusting rod 27 of the corresponding position of the outfeed conveyor 3 through the synchronous gear shaft 52, the torque flexible shaft 54 and the synchronous plug connector 55 in sequence;

[0071] S5: The second adjusting rod 27 drives the belt conveyor unit 21 to move along the supporting slide shaft 26 and the rotating slide shaft 22 through the screw pair;

[0072] S6: After the position of one support rod 43 is adjusted to the required displacement, the synchronous transmission component 5 is removed;

[0073] S7: Repeat the above steps S2-S6 to complete the adjustment of the positions of all support rods 43;

[0074] S8: The controller controls the board feeding conveying component 2 through an electrical signal to convey the printed circuit board after the previous process to the turning component 4;

[0075] S9: The controller then controls the flip mechanism 46 in the flip component 4 through an electrical signal to drive the flip shaft 41 to rotate a certain angle, so that the support rods 43 below the printed circuit board prop up the printed circuit board. At the same time, the printed circuit board on the bottom support rod 43 on one side of the board delivery conveyor component 3 is placed on the board delivery conveyor component 3.

[0076] S10: The controller then controls the board delivery conveying component 3 through an electrical signal to deliver the flipped printed circuit board to the next process.

[0077] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are protected by the present invention.

Claims

1. An automatic turning device for printed circuit board production, characterized in that: The invention comprises a frame (1), a board-feeding conveying component (2), a board-outlet conveying component (3) and a flipping component (4); the board-feeding conveying component (2) is used to feed a printed circuit board into the flipping component (4); the board-outlet conveying component (3) is used to feed a printed circuit board out of the flipping component (4); the flipping component (4) is used to flip the printed circuit board; the flipping component (4) comprises a flipping shaft (41), a sliding plate (42), a support rod (43), a sliding adjustment mechanism (44), a first bearing (45) and a flipping mechanism (46); both ends of the flipping shaft (41) are mounted on the middle part of the frame (1) through the first bearing (45); the two ends of the frame (1) are respectively The plate-in conveying component (2) and the plate-out conveying component (3) are provided; a sliding groove is provided on the flip shaft (41) along the axial direction; a group of sliding disks (42) are sleeved on the flip shaft (41); the sliding disks (42) slide axially along the flip shaft (41), and a limiting protrusion is provided on the sliding disk (42) to slide in the sliding groove; the support rods (43) are evenly spaced on the outer cylindrical surface of each sliding disk (42); the sliding adjustment mechanism (44) is used to drive each sliding disk (42) to move individually; the flip mechanism (46) is used to drive the flip shaft (41) to rotate; the flip mechanism (46) is connected to the frame (1).

2. The automatic turning device for printed circuit board production according to claim 1, characterized in that: The sliding adjustment mechanism (44) comprises an adjustment disk (441), a support disk (442) and a first adjustment rod (443); the adjustment disk (441) and the support disk (442) are respectively sleeved on both ends of the flip shaft (41); the adjustment disk (441) and the support disk (442) are both fixedly connected to the flip shaft (41); the first adjustment rod (443) is arranged between the adjustment disk (441) and the support disk (442); one end of the first adjustment rod (443) is rotatably connected to the support disk (442); the other end of the first adjustment rod (443) is rotatably connected to the adjustment disk (441), and a rotating portion for inputting torque is arranged on the end surface of the end; each first adjustment rod (443) drives a corresponding sliding disk (42) to move through a screw pair.

3. The automatic turning device for printed circuit board production according to claim 2, characterized in that: The inlet plate conveying component (2) and the outlet plate conveying component (3) have the same specific structure, and the inlet plate conveying component (2) and the outlet plate conveying component (3) are symmetrically arranged with the flip component (4) as the center; the inlet plate conveying component (2) includes a belt conveying unit (21), a rotating slide shaft (22), a conveying drive unit (23), an adjustment plate (24), a support plate (25), a support slide shaft (26) and a second adjustment rod (27); both ends of the support slide shaft (26) are connected to the frame (1); the adjustment plate (24) and the support plate (25) are respectively sleeved on both ends of the support slide shaft (26); a group of the belt conveying units (21) are arranged between the adjustment plate (24) and the support plate (25); the belt conveying units (21) are simultaneously slidably connected to the On the supporting slide shaft (26) and the rotating slide shaft (22), the rotating slide shaft (22) is used to drive the conveying wheel of the belt conveyor unit (21) to rotate; one end of the rotating slide shaft (22) is driven to rotate by the conveying drive unit (23); the conveying drive unit (23) is connected to the adjusting plate (24); a group of second adjusting rods (27) are arranged between the adjusting plate (24) and the supporting plate (25); one end of the second adjusting rod (27) is rotatably connected to the supporting plate (25); the other end of the second adjusting rod (27) is rotatably connected to the adjusting plate (24), and a torsion portion for inputting torque is arranged on the end face of the end; each second adjusting rod (27) adjusts a corresponding belt conveyor unit (21) to move through a screw pair.

4. The automatic turning device for printed circuit board production according to claim 3, characterized in that: The flipping component (4) is connected to the board-in conveying component (2) and the board-out conveying component (3) via a synchronous transmission component (5); the synchronous transmission component (5) is used to enable the first adjustment rod (443) in the flipping component (4) and the second adjustment rod (27) in the board-in conveying component (2) and the board-out conveying component (3) to automatically achieve synchronous rotation.

5. The automatic turning device for printed circuit board production according to claim 4, characterized in that: The synchronous transmission component (5) includes a driving gear shaft (51), a synchronous gear shaft (52), a housing (53), a torque flexible shaft (54) and a synchronous plug connector (55); one end of the driving gear shaft (51) is provided with a torque output structure that can be plugged into the rotating part of the first adjusting rod (443); the middle part of the driving gear shaft (51) is provided with gear teeth; the other end of the driving gear shaft (51) is provided with a torque input structure that can be connected to an external tool; and two sides of the driving gear shaft (51) are provided with a The synchronous gear shaft (52) is rotatably connected at both ends of the synchronous gear shaft (52) in the housing (53); an inner hexagonal boss structure is provided on the periphery of the torque output structure of the housing (53) close to the driving gear shaft (51) and matched with the inner hexagonal groove on the adjusting disk (441); one end of the synchronous gear shaft (52) is connected to the synchronous plug connector (55) through the torque flexible shaft (54); and a torque output structure capable of plugging into the torsion portion of the second adjusting rod (27) is provided at the end of the synchronous plug connector shaft.

6. The automatic turning device for printed circuit board production according to claim 5, characterized in that: The torque flexible shaft (54) comprises an elastic spiral shaft (541), a plug ring (542) and a sleeve (543); the elastic spiral shaft (541) is made of a rolled elastic metal material; one end of the elastic spiral shaft (541) is fixedly connected to the driving gear shaft (51) via a boss at the end of the driving gear shaft (51); the other end of the elastic spiral shaft (541) is fixedly connected to the end of the synchronous plug connector (55) via a boss at the end of the synchronous plug connector (55); The sleeve (543) is disposed on the outer surface of the elastic spiral shaft (541); one end of the sleeve (543) is fixedly connected to the housing (53); the other end of the sleeve (543) is fixedly connected to the end surface of the plug ring (542); the plug ring (542) is sleeved on the synchronous plug connector (55) and is rotatably connected to the synchronous plug connector (55); the plug ring (542) has an inner hexagonal shape and can be plugged into the inner hexagonal groove on the adjustment plate (24).

7. The automatic turning device for printed circuit board production according to claim 6, characterized in that: The torque flexible shaft (54) further comprises a flexible support rod (544); the flexible support rod (544) is an elastic solid structure; the flexible support rod (544) is arranged in the spiral tube structure of the elastic spiral shaft (541), and the outer diameter of the flexible support rod (544) is closely attached to the inner diameter of the spiral tube structure of the elastic spiral shaft (541).

8. The automatic turning device for printed circuit board production according to claim 3, characterized in that: Both ends of the supporting sliding shaft (26) are rotatably connected to the frame (1) via second bearings (28).

9. The automatic turning device for printed circuit board production according to claim 8, characterized in that: A limiting structure (261) is provided on the side of the supporting sliding shaft (26) close to the flip component (4); a limiting block (11) is provided below the limiting structure (261); a screw is provided in a through hole of the limiting structure (261) and connected to a threaded hole on the limiting block (11); and the limiting block (11) is fixedly connected to the frame (1).

10. An automatic flipping method for producing printed circuit boards, applicable to any one of claims 1-9, characterized in that: The steps include: S1: First, the displacement amount that needs to be adjusted for each support rod (43) in the flip component (4) is determined based on the position of the solder joints on the printed circuit board to be produced; S2: plugging the end of the driving gear shaft (51) of the synchronous transmission component (5) into the first adjustment rod (443), and then plugging the two synchronous plug connectors (55) into the end of the second adjustment rod (27) of the corresponding position of the board infeed conveying component (2) and the end of the second adjustment rod (27) of the corresponding position of the board outfeed conveying component (3); S3: Use an Allen wrench or other torque input tool to plug into the end of the first adjustment rod (443), then rotate the Allen wrench to drive the first adjustment rod (443) to rotate, and the first adjustment rod (443) drives the sliding plate (42) to move along the sliding groove on the flip shaft (41) through the screw pair, thereby driving the support rod (43) on the sliding plate (42) to move the displacement required to be adjusted; S4: During the adjustment of the support rod (43), the driving gear shaft (51) sequentially transmits the torque to the second adjusting rod (27) of the corresponding position of the infeed conveying component (2) and the second adjusting rod (27) of the corresponding position of the outfeed conveying component (3) through the synchronous gear shaft (52), the torque flexible shaft (54) and the synchronous plug connector (55); S5: The second adjusting rod (27) drives the belt conveying unit (21) to move along the supporting sliding shaft (26) and the rotating sliding shaft (22) through the screw pair; S6: After the position of a support rod (43) is adjusted to the required displacement, the synchronous transmission component (5) is removed; S7: Repeat the above steps S2-S6 to complete the adjustment of the positions of all support rods (43); S8: The controller controls the board feeding conveying component (2) through an electrical signal to convey the printed circuit board after the previous process to the turning component (4); S9: The controller then controls the flip mechanism (46) in the flip component (4) through an electrical signal to drive the flip shaft (41) to rotate a certain angle, thereby supporting the printed circuit board on the support rod (43) below the printed circuit board, and at the same time, the printed circuit board on the bottom support rod (43) on one side of the board delivery conveyor component (3) is placed on the board delivery conveyor component (3); S10: The controller then controls the board delivery conveying component (3) through an electrical signal to deliver the flipped printed circuit board to the next process.

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