Automatic turning device and method for printed circuit board production

Abstract

This invention belongs to the field of printed circuit board (PCB) manufacturing technology, specifically an automatic flipping device and method for PCB manufacturing. The flipping device includes a frame, an infeed conveyor, an outfeed conveyor, and a flipping component. The flipping component includes a flipping shaft, sliding disks, support rods, a sliding adjustment mechanism, a first bearing, and a flipping mechanism. This invention allows for individual adjustment of the position of each sliding disk on the flipping shaft via the sliding adjustment mechanism. This enables the adjustment of the sliding disk position according to the specific shape of each PCB and the specific location of its solder joints, allowing the support rod to avoid the solder joints and thus protect the solder joints on the PCB, thereby improving the manufacturing quality of the PCB.

Description

Technical Field

[0001] This invention belongs to the field of printed circuit board manufacturing technology, specifically an automatic flipping device and method for printed circuit board manufacturing. Background Technology

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

[0003] 1. Damage to printed circuit boards caused by clamping methods: Existing mechanical devices often use rigid clamps or pneumatic grippers, which can easily apply excessive pressure to the edges or surface components of printed circuit boards, leading to substrate deformation or solder joint cracking.

[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, requiring frequent changes of fixtures, which affects the flexibility of the production line.

[0005] 3. Insufficient flipping accuracy: Some equipment uses ordinary motor drive, which has a deviation in the flipping angle, resulting in inaccurate alignment between the printed circuit board and downstream equipment.

[0006] However, the solder joint positions of different printed circuit boards vary. 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 with and rub against the conveying and flipping components during the flipping process, which will lead to the solder joints being damaged. Summary of the Invention

[0007] To overcome the shortcomings of existing technologies, this invention proposes an automatic flipping device and method for printed circuit board (PCB) production. This invention primarily addresses the problem that existing PCB flipping devices, due to their inability to be adjusted, cause solder joints on the PCB to come into contact with and rub against the conveying and flipping components during flipping, leading to solder joint damage.

[0008] The technical solution adopted by this invention to solve its technical problem is as follows: This invention provides an automatic flipping device for printed circuit board production, including a frame, an infeed conveyor, an outfeed conveyor, and a flipping component; the infeed conveyor is used to feed the printed circuit board into the flipping component; the outfeed conveyor is used to send the printed circuit board out of the flipping component; the flipping component is used to flip the printed circuit board; the flipping component includes a flipping shaft, sliding disks, support rods, a sliding adjustment mechanism, a first bearing, and a flipping mechanism; both ends of the flipping shaft are mounted in the middle of the frame through the first bearing; the infeed conveyor and the outfeed conveyor are respectively arranged at both ends of the frame; a sliding groove is provided along the axial direction on the flipping shaft; a set of sliding disks are sleeved on the flipping shaft; the sliding disks slide along the axial direction of the flipping shaft, and a limiting protrusion is provided on the sliding disks to slide within 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; the flipping mechanism is connected to the frame.

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

[0010] Preferably, the infeed conveyor and the outfeed conveyor have the same specific structure, and the infeed conveyor and the outfeed conveyor are symmetrically arranged with the flipping component as the center. The infeed conveyor includes a belt conveyor 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. The adjusting plate and the support plate are respectively sleeved on both ends of the support slide shaft. A set of belt conveyor units is arranged between the adjusting plate and the support plate. The belt conveyor units are slidably connected to both the support slide shaft and the rotating slide shaft. The rotating slide shaft is used to drive the conveyor wheel of the belt conveyor 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 set of second adjusting rods is arranged through 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 part for inputting torque is provided on the end face of the second adjusting rod. Each second adjusting rod adjusts one belt conveyor unit to move through a lead screw pair.

[0011] Preferably, the flipping component is connected to the infeed conveyor component and the outfeed conveyor component via a synchronous transmission component; the synchronous transmission component is used to enable the first adjusting rod in the flipping component to automatically achieve synchronous rotation with the second adjusting rod in the infeed conveyor component and the outfeed conveyor component.

[0012] Preferably, the synchronous transmission component includes a drive gear shaft, a synchronous gear shaft, a housing, a torque flexible shaft, and a synchronous connector; one end of the drive gear shaft is provided with a torque output structure that can be inserted into the rotating part of the first adjusting rod; the middle part of the drive gear shaft is provided with gear teeth; the other end of the drive gear shaft is provided with a torque input structure that can be connected to an external tool; one synchronous gear shaft is provided on each side of the drive gear shaft; both ends of the synchronous gear shaft are rotatably connected to the housing; the housing is provided with an internal hexagonal boss structure that mates with the internal hexagonal recess on the adjusting plate near the torque output structure of the drive gear shaft; one end of the synchronous gear shaft is connected to the synchronous connector through the torque flexible shaft; the end of the synchronous connector is provided with a torque output structure that can be inserted into the torsion part of the second adjusting rod.

[0013] Preferably, the torque flexible shaft includes an elastic spiral shaft, a plug ring, and a sleeve; the elastic spiral shaft is made of an elastic metal material; one end of the elastic spiral shaft is fixedly connected to the drive gear shaft via a boss at the end of the drive gear shaft; the other end of the elastic spiral shaft is fixedly connected to the end of the synchronous plug via a boss at the end of the synchronous plug; the sleeve is fitted over 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 ring; the plug ring is fitted onto the synchronous plug and is rotatably connected to the synchronous plug; the plug ring is hexagonal in shape and can be inserted into the hexagonal recess on the adjustment plate.

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

[0015] Preferably, the two ends of the support slide 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 near 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; the limiting block is fixedly connected to the frame.

[0017] An automatic flipping method for printed circuit board production includes the following steps:

[0018] S1: First, determine the amount of displacement that each support rod in the flipping component needs to be adjusted based on the position of the solder joints on the printed circuit board to be produced.

[0019] S2: Connect the end of the drive gear shaft of the synchronous transmission component to the first adjusting rod, and then connect the two synchronous connectors to the ends of the second adjusting rods of the corresponding infeed conveyor and the corresponding outfeed conveyor respectively.

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

[0021] S4: During the adjustment of the support rod, the drive gear shaft transmits torque to the second adjusting rod of the corresponding infeed conveyor component and the second adjusting rod of the corresponding outfeed conveyor component in sequence through the synchronous gear shaft, torque flexible shaft and synchronous connector;

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

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

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

[0025] S8: The controller uses electrical signals to control the board feeding conveyor to transport the printed circuit board completed in the previous process to the flipping component;

[0026] S9: Subsequently, the controller controls the flipping mechanism in the flipping component to drive the flipping shaft to rotate a certain angle through an electrical signal, thereby supporting the printed circuit board on the support rod below the printed circuit board. At the same time, the printed circuit board on the support rod at the bottom of the board conveying component is placed on the board conveying component.

[0027] S10: Subsequently, the controller uses electrical signals to control the board conveying component to transport the flipped printed circuit board to the next process.

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

[0029] 1. This invention uses a sliding adjustment mechanism to individually adjust the position of each sliding disk on the flip axis, thereby adjusting the position of the sliding disk according to the specific shape of each printed circuit board and the specific location of its solder joints. This allows the support rod to avoid the location of the solder joints and provide support, thus protecting the solder joints on the printed circuit board and improving the production quality of the printed circuit board.

[0030] 2. This invention connects an Allen wrench or other torque input tool to the rotating part at the end of the first adjusting rod. Rotating the Allen wrench drives the first adjusting rod to rotate, which in turn drives the sliding disk to move along the sliding groove on the flip shaft via the lead screw pair between the first adjusting rod and the sliding disk. By rotating the first adjusting rod corresponding to the sliding disk, the position of each sliding disk can be adjusted individually, allowing the support rod on the sliding disk to avoid the location of the solder joints, thereby protecting the solder joints on the printed circuit board and improving the production quality of the printed circuit board.

[0031] 3. This invention, by setting a synchronous transmission component between the flipping component and the board feeding and board output conveying components, enables the first adjusting rod in the flipping component to automatically rotate synchronously with the second adjusting rod in the board feeding and board output conveying components. This not only greatly shortens the preparation time required for printed circuit board changeover and production, but also prevents the risk of collision caused by different adjustment amounts between the flipping component and the board feeding or board output conveying components due to individual adjustment. This improves the production efficiency of printed circuit boards and the convenience of the flipping device.

[0032] 4. This invention uses an external tool to rotate a drive gear shaft, which simultaneously and synchronously drives two synchronous gear shafts to rotate via gear teeth. The torque is then transmitted to the synchronous connectors via two torque flexible shafts, thereby simultaneously and synchronously driving the second adjusting rods of the infeed conveyor and the outfeed conveyor. This allows for simultaneous and synchronous adjustment of the corresponding positions of the belt conveyor units of the infeed and outfeed conveyors, significantly reducing the preparation time required for printed circuit board changeovers. Furthermore, it prevents collision risks caused by differing adjustment amounts between the flipping component and the infeed or outfeed conveyor components when adjusted separately, thus improving the production efficiency of printed circuit boards and the convenience of the flipping device. Attached Figure Description

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

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

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

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

[0037] Figure 4 This is a structural diagram of the flipping component;

[0038] Figure 5 This is a schematic diagram of the structure of the tilting mechanism;

[0039] Figure 6 This is a schematic diagram of the structure of the plate conveying component in this invention;

[0040] Figure 7 This is a schematic diagram showing the connection between the limiting structure and the limiting block in this invention;

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

[0042] Figure 9 yes Figure 8 A magnified view of a section at point A in the middle;

[0043] Figure 10 yes Figure 8 A magnified view of a section at point B in the middle;

[0044] In the diagram: Frame 1, Limiting block 11, Feeding conveyor 2, Belt conveyor unit 21, Rotating slide shaft 22, Conveying drive unit 23, Adjusting plate 24, Support plate 25, Supporting slide shaft 26, Limiting structure 261, Second adjusting rod 27, Second bearing 28, Feeding conveyor 3, Tilting component 4, Tilting shaft 41, Sliding disc 42, Support rod 43, Sliding adjustment mechanism 44, Adjusting disc 441, Support disc 442, First adjusting rod 443, First bearing 45, Tilting mechanism 46, Synchronous transmission component 5, Drive gear shaft 51, Synchronous gear shaft 52, Housing 53, Torque flexible shaft 54, Elastic spiral shaft 541, Plug-in ring 542, Sleeve 543, Support flexible rod 544, Synchronous plug-in connector 55. Detailed Implementation

[0045] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0046] like Figures 1 to 5 As shown, an automatic flipping device for printed circuit board (PCB) production includes a frame 1, an infeed conveyor 2, an outfeed conveyor 3, and a flipping component 4. The infeed conveyor 2 is used to feed the PCB into the flipping component 4; the outfeed conveyor 3 is used to send the PCB out of the flipping component 4; the flipping component 4 is used to flip the PCB; the flipping component 4 includes a flipping shaft 41, a sliding disk 42, a support rod 43, a sliding adjustment mechanism 44, a first bearing 45, and a flipping mechanism 46; the two ends of the flipping shaft 41 are mounted in the middle of the frame 1 via the first bearing 45; the frame... The infeed conveyor 2 and the outfeed conveyor 3 are respectively provided at both ends of the frame 1; a sliding groove is provided along the axial direction on the flip shaft 41; a set of sliding disks 42 are sleeved on the flip shaft 41; the sliding disks 42 slide along the axial direction of the flip shaft 41, and a limiting protrusion is provided on the sliding disks 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 flipping mechanism 46 is used to drive the flip shaft 41 to rotate; the flipping mechanism 46 is connected to the frame 1.

[0047] Since the solder joints of different printed circuit boards are located at different positions, in order to prevent the solder joints on the printed circuit boards from coming into contact with and rubbing against the conveying and flipping components 4 during flipping, thus 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 flipping shaft 41. This allows the position of the sliding disk 42 to be adjusted according to the specific shape of each printed circuit board and the specific position of its solder joints, so that the support rod 43 can avoid the position of the solder joints and provide support, thereby protecting the solder joints on the printed circuit board and improving the production quality of the printed circuit board.

[0048] After adjusting the support position of the support rod 43, continuous automatic flipping can be performed. Specifically, the controller controls the board feeding conveyor 2 to transport the printed circuit board completed in the previous process to the flipping component 4 via an electrical signal. Then, the controller controls the flipping mechanism 46 in the flipping component 4 to drive the flipping shaft 41 to rotate a certain angle via an electrical signal. This angle is specifically the included angle between two adjacent support rods 43. As a result, the support rod 43 below the printed circuit board supports the printed circuit board. At the same time, the printed circuit board on the support rod 43 on the side of the board output conveyor 3 and at the bottom is placed on the board output conveyor 3. Then, the controller controls the board output conveyor 3 via an electrical signal to transport the flipped printed circuit board to the next process.

[0049] like Figure 4 As shown, the sliding adjustment mechanism 44 includes 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 disposed through 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 part for inputting torque is provided on the end face of the first adjustment rod 443; each first adjustment rod 443 drives one sliding disk 42 to move through a lead screw pair.

[0050] The first adjusting rod 443 is connected to the rotating part at the end of the first adjusting rod 443 by connecting an Allen wrench or other torque input tool. Rotating the Allen wrench drives the first adjusting rod 443 to rotate, and the lead screw pair between the first adjusting rod 443 and the sliding disk 42 drives the sliding disk 42 to move along the sliding groove on the flip shaft 41. By rotating the first adjusting rod 443 corresponding to the sliding disk 42, the position of each sliding disk 42 can be adjusted individually, so that the support rod 43 on the sliding disk 42 can avoid the position of the solder joint and provide 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 infeed conveyor 2 and the outfeed conveyor 3 have the same specific structure, and the infeed conveyor 2 and the outfeed conveyor 3 are symmetrically arranged with the flipping component 4 as the center; the infeed conveyor 2 includes a belt conveyor unit 21, a rotating slide shaft 22, a conveying drive unit 23, an adjusting plate 24, a support plate 25, a support slide shaft 26, and a second adjusting rod 27; both ends of the support slide shaft 26 are connected to the frame 1; the adjusting plate 24 and the support plate 25 are respectively sleeved on both ends of the support slide shaft 26; a set of belt conveyor units 21 is arranged between the adjusting plate 24 and the support plate 25; the belt conveyor 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 conveyor wheel of the belt conveyor unit 21 to rotate; one end of the rotating slide shaft 22 is driven to rotate by the conveyor drive unit 23; the conveyor drive unit 23 is connected to the adjusting plate 24; a set of second adjusting rods 27 are arranged through 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 part for inputting torque is provided on the end face of the second adjusting rod 27; each second adjusting rod 27 adjusts one belt conveyor unit 21 to move through a lead screw pair.

[0052] The second adjusting rod 27 is connected to the torsion part at its end by an Allen wrench or other torque input tool. Rotating the Allen wrench drives the second adjusting rod 27 to rotate, which in turn drives the belt conveyor unit 21 to move along the support slide shaft 26 and the rotation slide shaft 22 via the lead screw pair between the second adjusting rod 27 and the belt conveyor unit 21. The position of each belt conveyor unit 21 can be adjusted individually by the second adjusting rod 27 corresponding to each belt conveyor unit 21, ensuring that each belt conveyor unit 21 is always between two adjacent support rods 43. Adjusting the position of the support rods 43 also allows for adjustment of the position of the belt conveyor unit 21, preventing collisions between the belt conveyor unit 21 and the support rods 43. Furthermore, when the conveyor belt of the belt conveyor unit 21 comes into contact with the solder joints on the printed circuit board, adjusting the position of the belt conveyor unit 21 can prevent wear and tear on the solder joints, thus protecting the solder joints on the printed circuit board and 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 conveyor drive unit 23 of the board feeding conveyor component 2 through an electrical signal. Then, the conveyor drive unit 23 drives the conveyor wheel of the belt conveyor unit 21 to rotate through the rotating slide shaft 22. Then, the conveyor belt of the belt conveyor unit 21 carries the printed circuit board into the flipping component 4. The flipping component 4 flips the printed circuit board and places it on the board output conveyor component 3. The controller controls the conveyor drive unit 23 of the board output conveyor 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 infeed conveying component 2 and the outfeed conveying component 3 via a synchronous transmission component 5; the synchronous transmission component 5 is used to enable the first adjusting rod 443 in the flipping component 4 to automatically achieve synchronous rotation with the second adjusting rod 27 in the infeed conveying component 2 and the outfeed conveying component 3.

[0055] When changing the printed circuit board to be produced, a synchronous transmission component 5 is set between the flipping component 4 and the board feeding conveyor 2 and the board output conveyor 3, so that the first adjusting rod 443 in the flipping component 4 and the second adjusting rod 27 in the board feeding conveyor 2 and the board output conveyor 3 can automatically achieve synchronous rotation. This not only greatly shortens the preparation time required for the changeover of printed circuit boards, but also prevents the risk of collision caused by the different adjustment amounts of the flipping component 4 and the board feeding conveyor 2 or the board output conveyor 3 due to individual adjustment. This improves the production efficiency of printed circuit boards and the convenience of the flipping device.

[0056] like Figures 9 to 10 As shown, the synchronous transmission component 5 includes a drive gear shaft 51, a synchronous gear shaft 52, a housing 53, a torque flexible shaft 54, and a synchronous connector 55. One end of the drive gear shaft 51 is provided with a torque output structure that can be inserted into the rotating part of the first adjusting rod 443. Gear teeth are provided in the middle of the drive gear shaft 51. The other end of the drive 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 drive gear shaft 51. The two ends of the synchronous gear shaft 52 are rotatably connected to the housing 53. The housing 53 is provided with an internal hexagonal boss structure that mates with the internal hexagonal recess on the adjusting plate 441 near the torque output structure of the drive gear shaft 51. One end of the synchronous gear shaft 52 is connected to the synchronous connector 55 through the torque flexible shaft 54. The end of the synchronous connector 55 is provided with a torque output structure that can be inserted into the torsion part of the second adjusting rod 27.

[0057] When changing the production of printed circuit boards, the synchronous conveyor is connected to the flipping component 4, the infeed conveyor 2, and the outfeed conveyor 3. Specifically, the drive gear shaft 51 is inserted into the end of the first adjusting rod 443, and the internal hexagonal boss structure of the housing 53 is also inserted into the internal hexagonal recess on the adjusting plate 441, thereby increasing the stability during use. The two synchronous connectors 55 are respectively inserted into the ends of the second adjusting rod 27 of the infeed conveyor 2 and the second adjusting rod 27 of the outfeed conveyor 3. Since the support rod 43 adjusted by each first adjusting rod 443 corresponds one-to-one with the belt conveyor unit 21 adjusted by the second adjusting rod 27, when the drive gear shaft 51 is rotated by an external tool, the drive gear shaft 51... 1. The two synchronous gear shafts 52 are driven to rotate simultaneously by the gear teeth, and then the torque is transmitted to the synchronous connector 55 through the two torque flexible shafts 54. This enables the simultaneous and synchronous driving of the second adjusting rod 27 of the board feeding conveyor 2 and the second adjusting rod 27 of the board output conveyor 3. This allows for the simultaneous and synchronous adjustment of the corresponding positions of the belt conveyor unit 21 of the board feeding conveyor 2 and the belt conveyor unit 21 of the board output conveyor 3. This greatly shortens the preparation time required for the changeover of printed circuit boards and prevents the risk of collision caused by the different adjustment amounts of the flipping component 4 and the board feeding conveyor 2 or the board output conveyor 3 due to individual adjustment. This improves the production efficiency of printed circuit boards and the convenience of the flipping device.

[0058] like Figures 9 to 10 As shown, the torque flexible shaft 54 ​​includes an elastic spiral shaft 541, a plug 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 drive gear shaft 51 via a boss at the end of the drive gear shaft 51. The other end of the elastic spiral shaft 541 is fixedly connected to the end of the synchronous plug 55 via a boss at the end of the synchronous plug 55. The sleeve 543 is fitted over 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 ring 542. The plug ring 542 is fitted onto the synchronous plug 55 and is rotatably connected to the synchronous plug 55. The plug ring 542 is hexagonal in shape and can be inserted into the hexagonal recess on the adjusting plate 24.

[0059] The elastic spiral shaft 541, made of elastic metal material, can stably transmit torque while allowing for arbitrary bending. This enables the synchronous transmission component 5 to adjust the first adjusting rod 443 and the second adjusting rod 27 at different positions. Consequently, the synchronous transmission component 5 can effectively perform synchronous adjustment of the flipping component 4, the infeed conveyor component 2, and the outfeed conveyor component 3, thus improving ease of use. The insertion ring 542 and the sleeve 543 allow the synchronous transmission component 5 to shield the constantly twisting elastic spiral shaft 541 during adjustment, ensuring user safety. Simultaneously, lubricant can 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 to 10 As shown, the torque flexible shaft 54 ​​also includes a support flexible rod 544; the support flexible rod 544 is an elastic solid structure; the support flexible rod 544 is disposed inside the spiral tube structure of the elastic spiral shaft 541, and the outer diameter of the support flexible rod 544 is in close contact with the inner diameter of the spiral tube structure of the elastic spiral shaft 541.

[0061] By providing a support rod 544 inside the elastic spiral shaft 541, the inner diameter of the spiral tube structure of the elastic spiral shaft 541 is supported by the support rod 544. When the elastic spiral shaft 541 is subjected to torque and curls inward, the internal support rod 544 can support the elastic spiral shaft 541, thus preventing slight displacement deviations caused by inward contraction and improving the accuracy of the synchronous transmission component 5 adjustment. However, since the support rod 544 cannot provide support force when the elastic spiral shaft 541 is subjected to the opposite torque and curls outward, to achieve high-precision position adjustment, the support rod 43 and the belt conveyor unit 21 need to be adjusted to one side of the adjustment point. This ensures that the elastic spiral shaft 541 is in an inward-curling state each time it approaches the adjustment point, thus guaranteeing high-precision position adjustment. The support rod 544 can be a steel wire rope woven from elastic metal wires or a solid elastic rod formed of non-metallic composite materials.

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

[0063] After the two ends of the support slide shaft 26 are rotatably connected to the frame 1 through the second bearing 28, the infeed conveyor 2 and the outfeed conveyor 3 can be flipped up as a whole. Therefore, when the support rod 43 in the flipping component 4 is adjusted separately, there is no need to worry about collision with the infeed conveyor 2 and the outfeed conveyor 3 on both sides, thus 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 near the flipping 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 it is necessary to flip the infeed conveyor 2 and the outfeed conveyor 3 upward as a whole, the screws on the limiting structure 261 need to be unscrewed first to flip the infeed conveyor 2 and the outfeed conveyor 3 upward; when the infeed conveyor 2 and the outfeed conveyor 3 are working, they are put down, so that the limiting structure 261 on the supporting slide shaft 26 abuts against the limiting block 11, and then the screws are tightened.

[0066] like Figures 1 to 10 As shown, an automatic flipping method for printed circuit board production includes the following steps:

[0067] S1: First, determine the amount of displacement that each support rod 43 in the flipping component 4 needs to be adjusted based on the position of the solder points on the printed circuit board to be produced.

[0068] S2: Connect the end of the drive gear shaft 51 of the synchronous transmission component 5 to the first adjusting rod 443, and then connect the two synchronous connectors 55 to the ends of the second adjusting rods 27 of the corresponding infeed conveyor component 2 and the corresponding outfeed conveyor component 3, respectively.

[0069] S3: Use an Allen wrench or other torque input tool to connect to the end of the first adjusting rod 443, then rotate the Allen wrench to drive the first adjusting rod 443 to rotate. The first adjusting rod 443 drives the sliding disk 42 to move along the sliding groove on the flip shaft 41 through the lead screw pair, thereby driving the support rod 43 on the sliding disk 42 to move the required displacement.

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

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

[0072] S6: After adjusting the position of a support rod 43 to the required displacement, remove the synchronous transmission component 5;

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

[0074] S8: The controller controls the board feeding conveyor 2 to transport the printed circuit board completed in the previous process to the flipping component 4 through an electrical signal;

[0075] S9: Subsequently, the controller controls the flipping mechanism 46 in the flipping component 4 to drive the flipping shaft 41 to rotate a certain angle through an electrical signal, thereby supporting the printed circuit board on the support rod 43 below the printed circuit board. At the same time, the printed circuit board on the support rod 43 at the bottom of the board conveying component 3 is placed on the board conveying component 3.

[0076] S10: Subsequently, the controller uses an electrical signal to control the board conveying component 3 to convey 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 flipping device for printed circuit board production, characterized in that: The system includes a frame (1), an infeed conveyor (2), an outfeed conveyor (3), and a flipping component (4). The infeed conveyor (2) is used to feed the printed circuit board into the flipping component (4). The outfeed conveyor (3) is used to send 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 disk (42), a support rod (43), a sliding adjustment mechanism (44), a first bearing (45), and a flipping mechanism (46). The two ends of the flipping shaft (41) are mounted in the middle of the frame (1) through the first bearing (45). The two ends of the frame (1) are respectively... The infeed conveyor (2) and the outfeed conveyor (3) are provided; a sliding groove is provided axially on the flip shaft (41); a set of sliding discs (42) are sleeved on the flip shaft (41); the sliding discs (42) slide axially along the flip shaft (41), and a limiting protrusion is provided on the sliding discs (42) to slide in the sliding groove; the support rods (43) are evenly spaced on the outer cylindrical surface of each sliding disc (42); the sliding adjustment mechanism (44) is used to drive each sliding disc (42) to move individually; the flipping mechanism (46) is used to drive the flip shaft (41) to rotate; the flipping mechanism (46) is connected to the frame (1); The sliding adjustment mechanism (44) includes 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 disposed through 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 part for inputting torque is provided on the end face of the first adjustment rod (443); each first adjustment rod (443) drives one sliding disk (42) to move through a lead screw pair; The infeed conveyor (2) and the outfeed conveyor (3) have the same specific structure, and the infeed conveyor (2) and the outfeed conveyor (3) are symmetrically arranged with the flipping component (4) as the center; the infeed conveyor (2) includes a belt conveyor unit (21), a rotating slide shaft (22), a conveying drive unit (23), an adjusting plate (24), a support plate (25), a support slide shaft (26), and a second adjusting rod (27); the two ends of the support slide shaft (26) are connected to the frame (1); the two ends of the support slide shaft (26) are respectively fitted with the adjusting plate (24) and the support plate (25); a set of belt conveyor units (21) is arranged between the adjusting plate (24) and the support plate (25); the belt conveyor units (21) are simultaneously slidably connected to the frame (1). On the supporting slide shaft (26) and the rotating slide shaft (22), the rotating slide shaft (22) is used to drive the conveyor wheel of the belt conveyor unit (21) to rotate; one end of the rotating slide shaft (22) is driven to rotate by the conveyor drive unit (23); the conveyor drive unit (23) is connected to the adjusting plate (24); a set of second adjusting rods (27) is provided 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 part for inputting torque is provided on the end face of the second adjusting rod (27); each second adjusting rod (27) is adjusted to move one belt conveyor unit (21) through a lead screw pair; The flipping component (4) is connected to the infeed conveying component (2) and the outfeed conveying component (3) via a synchronous transmission component (5); the synchronous transmission component (5) is used to enable the first adjusting rod (443) in the flipping component (4) to automatically achieve synchronous rotation with the second adjusting rod (27) in the infeed conveying component (2) and the outfeed conveying component (3); The synchronous transmission component (5) includes a drive gear shaft (51), a synchronous gear shaft (52), a housing (53), a torque flexible shaft (54), and a synchronous connector (55); one end of the drive gear shaft (51) is provided with a torque output structure that can be inserted into the rotating part of the first adjusting rod (443); the middle part of the drive gear shaft (51) is provided with gear teeth; the other end of the drive gear shaft (51) is provided with a torque input structure that can be connected to an external tool; a synchronous connector is provided on each side of the drive gear shaft (51). The synchronous gear shaft (52) is rotatably connected at both ends to the housing (53); the housing (53) is provided with an internal hexagonal boss structure that mates with the internal hexagonal recess on the adjusting plate (441) near the torque output structure of the drive gear shaft (51); one end of the synchronous gear shaft (52) is connected to the synchronous connector (55) through the torque flexible shaft (54); the end of the synchronous connector (55) is provided with a torque output structure that can be inserted into the torsion part of the second adjusting rod (27).

2. The automatic flipping device for printed circuit board production according to claim 1, characterized in that: The torque flexible shaft (54) includes an elastic helical shaft (541), a connector ring (542), and a sleeve (543); the elastic helical shaft (541) is made of elastic metal material; one end of the elastic helical shaft (541) is fixedly connected to the drive gear shaft (51) via a boss at the end of the drive gear shaft (51); the other end of the elastic helical shaft (541) is fixedly connected to the end of the synchronous connector (55) via a boss at the end of the synchronous connector (55); The sleeve (543) is fitted over 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 ring (542); the plug ring (542) is fitted on the synchronous plug (55) and is rotatably connected to the synchronous plug (55); the plug ring (542) is hexagonal in shape and can be inserted into the hexagonal recess on the adjusting plate (24).

3. The automatic flipping device for printed circuit board production according to claim 2, characterized in that: The torque flexible shaft (54) also includes a support flexible rod (544); the support flexible rod (544) is an elastic solid structure; the support flexible rod (544) is disposed inside the spiral tube structure of the elastic spiral shaft (541), and the outer diameter of the support flexible rod (544) is close to the inner diameter of the spiral tube structure of the elastic spiral shaft (541).

4. The automatic flipping device for printed circuit board production according to claim 1, characterized in that: The two ends of the support slide shaft (26) are rotatably connected to the frame (1) via the second bearing (28).

5. An automatic flipping device for printed circuit board production according to claim 4, characterized in that: A limiting structure (261) is provided on the side of the supporting slide shaft (26) near the flipping 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).

6. An automatic flipping method for printed circuit board production, applicable to the automatic flipping device for printed circuit board production according to any one of claims 1-5, characterized in that: Includes the following steps: S1: First, determine the amount of displacement that each support rod (43) in the flipping component (4) needs to be adjusted based on the position of the solder joints on the printed circuit board to be produced; S2: Connect the end of the drive gear shaft (51) of the synchronous transmission component (5) to the first adjusting rod (443), and then connect the two synchronous connectors (55) to the end of the second adjusting rod (27) of the corresponding plate feeding component (2) and the end of the second adjusting rod (27) of the corresponding plate discharging component (3) respectively. S3: Use an Allen wrench or other torque input tool to connect to the end of the first adjusting rod (443), then rotate the Allen wrench to drive the first adjusting rod (443) to rotate. The first adjusting rod (443) drives the sliding disk (42) to move along the sliding groove on the flip shaft (41) through the lead screw pair, thereby driving the support rod (43) on the sliding disk (42) to move the required displacement. S4: During the adjustment of the support rod (43), the drive gear shaft (51) transmits torque to the second adjusting rod (27) of the corresponding infeed conveyor (2) and the second adjusting rod (27) of the corresponding outfeed conveyor (3) in sequence through the synchronous gear shaft (52), the torque flexible shaft (54) and the synchronous connector (55); S5: The second adjusting rod (27) drives the belt conveyor unit (21) to move along the support slide shaft (26) and the rotating slide shaft (22) through the lead screw pair; S6: After adjusting the position of a support rod (43) to the required displacement, remove the synchronous transmission component (5); S7: Repeat steps S2-S6 above to complete the adjustment of the position of all support rods (43); S8: The controller controls the board feeding component (2) to transport the printed circuit board completed in the previous process to the flipping component (4) via an electrical signal; S9: Subsequently, the controller controls the flipping mechanism (46) in the flipping component (4) to drive the flipping shaft (41) to rotate a certain angle through the electrical signal, and then the support rod (43) below the printed circuit board supports the printed circuit board. At the same time, the printed circuit board on the support rod (43) on the side of the board conveying component (3) and at the bottom is placed on the board conveying component (3). S10: Subsequently, the controller controls the board conveying component (3) to convey the flipped printed circuit board to the next process via an electrical signal.

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