U disk connector production and processing with assembly compression jig

Abstract

The application discloses a U disk connector production and processing assembling and pressing jig, relates to the U disk processing technical field, and comprises a pressing table, a plurality of first rotating rolls and a plurality of second rotating rolls are respectively connected with an upper conveying belt and a second conveying belt through transmission outside the pressing table, a plurality of through holes are formed in the outer portion of the upper conveying belt, a cylinder is connected with the pressing table through a mounting seat, and continuous downward pressing of the USB connector can greatly reduce the misalignment pressing phenomenon caused by the USB connector deviation, and even when the USB connector produces the misalignment phenomenon, the plurality of side suction electromagnets can still actively position the USB connector, actively adjust the USB connector to the specified position, reduce the downtime, and the whole not only reduces the misalignment pressing phenomenon of the USB connector, but also actively adjusts according to the misalignment, reduces the time delay caused by the production error.

Description

Technical Field

[0001] This invention relates to the field of USB flash drive processing technology, and more specifically, to an assembly and pressing fixture for manufacturing USB flash drive connectors. Background Technology

[0002] One of the core components of a USB flash drive is its connector, which is responsible for the electrical connection with interfaces such as computers, enabling stable data transmission. The quality of the connector directly affects the overall performance and reliability of the USB flash drive. In the manufacturing process of USB flash drive connectors, assembly and pressing are crucial steps. This step requires the precise assembly of multiple delicate components, such as metal contacts, plastic casing, and connecting circuits, and a pressing operation to ensure a tight and stable connection between the components, forming a connector structure that meets design requirements.

[0003] In the production process of USB flash drives, the connection between the USB connector and the PCB board is mostly achieved through mechanized production lines that mass-produce PCB boards to place the USB connector. During the placement of the USB connector, manufacturers still manually connect the USB connector to the PCB board one by one and then solder it. Because the connection holes between the USB connector and the PCB board need to be soldered after the connection is completed, if misalignment occurs, the mechanical loading force may directly damage the entire PCB board. Furthermore, if an incorrect installation occurs without triggering an alarm, a large batch of subsequently pressed and soldered USB connectors and PCB boards will be damaged. Therefore, an assembly pressing fixture for the production and processing of USB flash drive connectors is proposed. Summary of the Invention

[0004] The purpose of this invention is to provide an assembly and pressing fixture for manufacturing USB flash drive connectors, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an assembly pressing fixture for manufacturing and processing USB flash drive connectors, comprising a pressing table, wherein an upper conveyor belt and a second conveyor belt are respectively driven and connected to the outside of the pressing table via a set of first rotating rollers and a set of second rotating rollers, the upper conveyor belt having multiple through openings on its outside, a cylinder being connected to the outside of the pressing table via a mounting base, a pressure plate being fixedly connected to the output shaft of the cylinder, and a temporary storage structure being connected to the outside of the through openings;

[0006] The temporary storage structure is used to temporarily store the USB interface at the through-hole position. The second conveyor belt has multiple placement slots on its outside. The placement slots are used to store the PCB board connected to the USB interface. The pressure plate is equipped with a positioning structure, which is used to ensure the connection accuracy when the pressure plate pushes the USB interface and the PCB board to press together.

[0007] Preferably, the positioning structure includes a central electromagnet, which is fixedly connected to the center of the pressure plate. The central electromagnet is used to magnetically attract the USB interface when the pressure plate presses the USB interface close to the PCB board, so as to prevent misalignment when the USB interface moves down.

[0008] Preferably, the positioning structure further includes a plurality of peripheral electromagnets located at the periphery of the pressure plate. The plurality of peripheral electromagnets are used to attract the periphery of the USB interface and detect whether the periphery of the USB interface is in a specified position.

[0009] Preferably, a plurality of side electromagnets are fixedly connected to the bottom of the pressure plate, and the side electromagnets are respectively located between the plurality of surrounding electromagnets.

[0010] Preferably, the outer side wall of the pressure plate is provided with a moving groove, the side wall of the moving groove is provided with a sliding groove, a slider is slidably connected inside the sliding groove, and a side-attracting electromagnet is fixedly connected outside the slider.

[0011] Preferably, a soft rolling ball is rotatably connected to the center of both the surrounding electromagnets and the side electromagnets. The soft rolling ball is used to assist the movement of the USB interface on the bottom of the pressure plate.

[0012] Preferably, the temporary storage structure includes multiple upper soft card plates, which are fixedly connected to the side wall of the through-hole to form a U-shaped locking position, and lower limiting plates are fixedly connected to both sides of the inner wall of the through-hole.

[0013] Preferably, both the upper conveyor belt and the second conveyor belt are equipped with infrared positioning modules, which are laser emitters and laser receivers, respectively, and the infrared positioning modules on the upper conveyor belt and the second conveyor belt are aligned at the same level.

[0014] Preferably, a conductive ring is fixedly connected to the inner wall of the pressing table, and multiple conductive contact points are fixedly connected inside the upper conveyor belt and the second conveyor belt. The multiple conductive contact points are respectively connected to multiple infrared positioning modules, and the conductive ring is connected to an external power source.

[0015] Preferably, the conductive ring, cylinder, central electromagnet, surrounding electromagnets, and side electromagnets are all connected to the main controller via wires. The main controller detects the inductance data values ​​of the central and surrounding electromagnets, and the formula for calculating the change in inductance is: , The permeability of free space, The relative permeability of the ferromagnetic material for the USB interface. The number of turns of the electromagnet coil. The cross-sectional area of ​​the magnetic circuit is... This is the length of the magnetic circuit;

[0016] The current value is fed back by the inductance value, and a threshold for current change is set to determine whether the surrounding electromagnets have been successfully attracted. The calculation formula is as follows: , for The current value fed back by the inductance value, To set a threshold, when > When the adsorption is successful at this location, the USB interface is in the correct position. ≤ When a deviation is detected, a correction mechanism is triggered.

[0017] The revision mechanism is triggered by activating the side electromagnet via the main controller. The formula for calculating the magnetic attraction force generated by the side electromagnet is as follows: , For magnetic attraction, It represents the magnetic flux density. The cross-sectional area of ​​the magnetic circuit is... The permeability of vacuum. Relative permeability The number of turns of the electromagnet coil. For the current passing through the coil, This is the effective length of the magnetic circuit;

[0018] During the process of implementing the revision mechanism, the motion correction formula for the USB interface is: , It's about the quality of the USB interface. For acceleration, For the elastic damping force of a soft rolling ball, This refers to the sliding friction between the pressure plate and the USB interface.

[0019] The dynamic control logic formula of the master controller is: , This represents the deviation between the current position and the target position. and The proportional / derivative coefficients preset by the main controller To adjust the current in real time and ensure a smooth reset of the USB interface, Let be the differential rate of change of the error.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] In this invention, when the cylinder drives the pressure plate to move downward, the central electromagnet at the center of the pressure plate will be energized and generate magnetism. When the central electromagnet generates magnetism, it can attract the USB interface, thereby ensuring that the USB interface is always on the top pressing surface of the pressure plate and ensuring the downward pressing stability of the USB interface.

[0022] In this invention, multiple peripheral electromagnets are used to detect the position of the four edges of the USB connector. Once the position of the four edges is determined, continuously pressing down on the USB connector can greatly reduce the misalignment caused by the USB connector offset. Even when the USB connector is misaligned, multiple side-attracting electromagnets can still actively adjust the position of the USB connector, actively adjusting it to the designated position, reducing downtime. Overall, this not only reduces the misalignment of the USB connector, but also allows for active adjustment based on the misalignment, reducing time delays caused by production errors. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the pressure plate structure in an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the moving slot and the side-attracting electromagnet in an embodiment of the present invention;

[0026] Figure 4 This is an embodiment of the present invention. Figure 1 A magnified structural diagram of area A in the diagram;

[0027] Figure 5 This is an embodiment of the present invention. Figure 3 A magnified structural diagram of region B in the diagram;

[0028] Figure 6 This is a schematic diagram of the structure of the conductive contact point in an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the conductive ring and the main controller in an embodiment of the present invention.

[0030] In the diagram: 100, pressing table; 101, first rotating roller; 102, upper conveyor belt; 103, second rotating roller; 104, second conveyor belt; 105, through-hole; 106, placement slot; 107, cylinder; 108, pressure plate; 200, central electromagnet; 300, surrounding electromagnets; 400, side electromagnets; 401, moving slot; 402, sliding groove; 403, side suction electromagnet; 404, slider; 500, soft rolling ball; 600, upper soft clamping plate; 700, lower limit plate; 800, infrared positioning module; 900, conductive contact point; 901, conductive ring; 902, main controller. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1, such as Figure 1 As shown, the assembly pressing fixture for manufacturing USB flash drive connectors in this application includes a pressing table 100. The pressing table 100 is externally connected to an upper conveyor belt 102 and a second conveyor belt 104 via a set of first rotating rollers 101 and a set of second rotating rollers 103, respectively. The upper conveyor belt 102 has multiple through-holes 105 on its exterior. A cylinder 107 is connected to the exterior of the pressing table 100 via a mounting base. The output shaft of the cylinder 107 is fixedly connected to a pressure plate 108. A temporary storage structure is connected to the exterior of the through-holes 105.

[0033] The temporary storage structure is used to temporarily store the USB interface at the through-hole 105 position. The second conveyor belt 104 has multiple placement slots 106 on its outside. The placement slots 106 are used to store the PCB board connected to the USB interface. The pressure plate 108 is equipped with a positioning structure, which is used to ensure the connection accuracy when the pressure plate 108 pushes the USB interface to press against the PCB board.

[0034] Specifically, during use, the staff can use an external robotic arm to transport the completed PCB board and connector to the through-hole 105 and the placement slot 106 respectively. When the external robotic arm places the USB connector into the through-hole 105, the USB connector can be temporarily stored in a designated position through a temporary storage structure, so that the USB connector will not fall through the through-hole 105 and down.

[0035] Furthermore, both the upper conveyor belt 102 and the second conveyor belt 104 are driven by the first rotating roller 101 and the second rotating roller 103. During the transmission process, the first rotating roller 101 and the second rotating roller 103 are driven to rotate by an external motor. The rotation of the first rotating roller 101 and the second rotating roller 103 will drive the upper conveyor belt 102 and the second conveyor belt 104 to rotate. Under continuous transmission, the USB connector and circuit board located on the upper conveyor belt 102 and the second conveyor belt 104 can be transported in real time. After the USB connector and circuit board are transported to the cylinder 10... When the cylinder is at position 7, the cylinder 107 drives the pressure plate 108 to move downward. During the downward movement, the pressure plate 108 will press and snap the USB connector located in the temporary storage structure onto the PCB board inside the lower placement slot 106, forming a continuous pressing and snapping connection. When the placement slot 106 rotates to the corner of the second conveyor belt 104, it will automatically fall down, which facilitates the collection of the USB flash drive after pressing. Alternatively, the overall length of the second conveyor belt 104 can be extended, and a welding component can be set behind the cylinder 107 to weld the USB flash drive after pressing.

[0036] like Figures 1-4 As shown, the temporary storage structure includes multiple upper soft card plates 600. The upper soft card plates 600 are fixedly connected to the side wall of the through-hole 105 to form a U-shaped locking position. Lower limit plates 700 are fixedly connected to both sides of the inner wall of the through-hole 105.

[0037] Specifically, during use, there are two upper flexible retaining plates 600 on both sides of the inner wall of each through-hole 105. The two upper flexible retaining plates 600 are respectively inverted L-shapes, forming a U-shape with a break in the middle. Both upper flexible retaining plates 600 are made of elastic material. When the robotic arm places the USB interface on the two lower limit plates 700, it can pass directly through the upper flexible retaining plates 600. The lower limit plates 700 below support the USB interface, forming a temporary storage effect, preventing the USB interface from falling directly through the through-hole 105 into the space below. Furthermore, the cylinder can be used to push the USB interface laterally between the two upper flexible retaining plates 600.

[0038] Furthermore, when the pressure plate 108 presses down on the USB interface, the USB interface will move downward due to the force, thereby pushing the upper flexible card plate 600 to deform. When the upper flexible card plate 600 undergoes a completely outward tilting deformation, the temporary holding effect on the USB interface can be canceled.

[0039] like Figures 1-4As shown, infrared positioning modules 800 are installed on both the upper conveyor belt 102 and the second conveyor belt 104. The infrared positioning modules 800 are laser emitters and laser receivers, respectively. The infrared positioning modules 800 on the upper conveyor belt 102 and the infrared positioning modules 800 on the second conveyor belt 104 are aligned.

[0040] Specifically, during use, when the USB interface during transmission reaches below the cylinder 107 and the pressure plate 108, it is also necessary to check the position of the PCB board inside the placement slot 106. The shape of the placement slot 106 is the same as that of the PCB board, with rounded edges, which allows the tilted PCB board to slide into the interior of the placement slot 106. During the alignment of the placement slot 106, the pressure plate 108 determines whether the position to be pressed is vertical. That is, the pressure plate 108 located outside the upper conveyor belt 102 is the laser receiver, and the laser emitter located outside the second conveyor belt 104 is the laser emitter. When the laser receiver and laser emitter located outside the upper conveyor belt 102 and the second conveyor belt 104 are vertically aligned, it is the first-level position determination. Once the current vertical position is determined to be the same, the cylinder 107 is activated to drive the pressure plate 108 to move downward.

[0041] like Figures 1-7 As shown, a conductive ring 901 is fixedly connected to the inner wall of the pressing table 100. Multiple conductive contact points 900 are fixedly connected inside the upper conveyor belt 102 and the second conveyor belt 104. The multiple conductive contact points 900 are respectively connected to multiple infrared positioning modules 800. The conductive ring 901 is connected to an external power source.

[0042] Specifically, in order to ensure the energizing effect of multiple pressure plates 108, multiple pressure plates 108 are connected to conductive contact points 900 through wires, and conductive contact points 900 are in contact with conductive rings 901. When in contact with conductive rings 901, conductive rings 901 will continuously supply power to conductive contact points 900, and conductive contact points 900 will transmit current to pressure plates 108 through wires, ensuring the power supply of pressure plates 108.

[0043] The technical solutions in the above embodiments of this application have at least the following technical effects or advantages: Compared with the prior art, in this embodiment, the upper conveyor belt 102 and the second conveyor belt 104 drive the USB interface and the PCB board to perform continuous transmission. After being transmitted to a designated position, the cylinder 107 drives the pressure plate 108 to move down, thereby pushing the USB interface down and snapping it onto the PCB board. This completely replaces the manual assembly of the PCB board and the USB connector, realizing continuous and uninterrupted pressing assembly and reducing labor costs.

[0044] Example 2: Considering that during the downward movement of the pressure plate 108 driven by the cylinder 107, the pressure plate 108 pushes the USB connector downward, and once the USB connector disengages from the upper flexible card plate 600, the USB connector will fall freely due to gravity. This free fall may cause misalignment before the USB connector contacts the PCB board, making accurate connection between the USB connector and the PCB board impossible. To address this technical problem, this application proposes a positioning structure to solve the above-mentioned technical problem, specifically:

[0045] like Figure 2 As shown, the positioning structure includes a central electromagnet 200, which is fixedly connected to the center of the pressure plate 108. The central electromagnet 200 is used to magnetically attract the USB interface when the pressure plate 108 presses the USB interface close to the PCB board, so as to avoid misalignment when the USB interface moves down.

[0046] Specifically, during use, when the cylinder 107 drives the pressure plate 108 to move downward, the central electromagnet 200 can be activated to attract the USB interface, ensuring that the USB interface is always on the top pressure surface of the pressure plate 108. This prevents the USB interface from detaching from the top pressure surface of the pressure plate 108 during the downward movement, further reducing misalignment.

[0047] The technical solutions in the above embodiments of this application have at least the following technical effects or advantages: Compared with Embodiment 1, in this embodiment, when the cylinder 107 drives the pressure plate 108 to move downward, the central electromagnet 200 at the center of the pressure plate 108 will be energized to generate magnetism. When the central electromagnet 200 generates magnetism, it can attract the USB interface, thereby ensuring that the USB interface is on the top pressing surface of the pressure plate 108 in real time, and ensuring the downward pressing stability of the USB interface.

[0048] Example 3: Considering that even when using the central electromagnet 200 to attract the USB connector for vertical movement, some USB connectors may detach from the upper flexible card plate 600 or tilt from the start. If tilting or misalignment occurs, the USB connector cannot accurately connect to the designated point on the PCB board during the pressing process, failing to complete the pressing connection and easily damaging the PCB board. To address the above technical problems, this application proposes the following technical solution:

[0049] like Figure 2 As shown, the positioning structure also includes multiple perimeter electromagnets 300, which are located at the perimeter edges of the pressure plate 108. The multiple perimeter electromagnets 300 are used to attract the perimeter edges of the USB interface and detect whether the perimeter edges of the USB interface are in the specified position.

[0050] Specifically, during use, when the pressure plate 108 causes the central electromagnet 200 to attract the USB interface, the central electromagnet 200 can detect whether attraction has occurred through changes in inductance. Once the central electromagnet 200 confirms attraction through inductance changes, it can be determined that attraction has occurred between the USB interface and the central electromagnet 200. Furthermore, the peripheral electromagnets 300 located around the perimeter of the pressure plate 108 can attract the USB interface from its four edges. The peripheral and edge electromagnets 300 effectively attract the USB interface from all four sides. After edge adsorption, not only can the adsorption stability of the USB interface be further guaranteed, but the change in inductance can also determine whether the electromagnets 300 at the four edges have adsorbed the USB interface. If the inductance of the electromagnets 300 at the four edges does not change after being energized, it is determined that the USB interface has not been adsorbed at the current position. If it is not determined that the USB interface has been adsorbed and the adsorption force is normal when energized, it is determined that the USB interface position has shifted. If the position shift is determined, the continuous operation of the cylinder 107 is canceled to avoid the shifted USB interface from damaging the PCB board.

[0051] Furthermore, considering that during use, when a USB interface misalignment is detected, most existing machines stop for inspection and adjustment. However, when only a slight misalignment occurs, existing machines cannot proactively adjust the USB interface autonomously. Therefore, if... Figure 2 As shown, the outer side wall of the pressure plate 108 is provided with a moving groove 401, the side wall of the moving groove 401 is provided with a sliding groove 402, the sliding groove 402 is slidably connected to a slider 404, and the slider 404 is fixedly connected to a side-attracting electromagnet 403.

[0052] Specifically, during use, when one of the surrounding electromagnets 300 detects that the USB port is not attracted by the inductance generated by magnetic attraction, the side electromagnet 403 can be energized. When the side electromagnet 403 is energized, it generates a magnetic force, which is lower than the attraction force of the surrounding electromagnets 300 and the center electromagnet 200. This attracts the misaligned USB port toward the designated position. During the gradual attraction process, the surrounding electromagnets 300 also generate attraction force. When the inductance detects that the USB port has been attracted, it is determined that the USB port has returned to its normal position, and the PCB board pressing operation can continue.

[0053] Furthermore, during use, the side-attracting electromagnets 403 located around the perimeter will sink down to near the perimeter of the USB interface, thereby generating magnetic force to laterally attract and move the USB connector. During the movement, the side-attracting electromagnets 403, which are lowered into the moving slot 401 by the slider 404, can also block the perimeter of the USB connector to prevent excessive movement of the USB connector. The positions of the four side-attracting electromagnets 403 represent the maximum offset of the USB interface.

[0054] like Figure 2 As shown, a soft rolling ball 500 is rotatably connected to the center of the four electromagnets 300 and the side electromagnets 400. The soft rolling ball 500 is used to assist the movement of the USB interface at the bottom of the pressure plate 108.

[0055] Specifically, during use, when the side-attracting electromagnet 403 attracts the USB connector, the soft rolling ball 500 assists in the movement of the USB connector. The soft rolling ball 500 is made of elastic material. When multiple surrounding electromagnets 300 attract the USB connector to the designated inductance, the attraction force is strengthened, which causes the soft rolling ball 500 to deform, preventing the USB connector from moving randomly.

[0056] like Figure 2 As shown, multiple side electromagnets 400 are fixedly connected to the bottom of the pressure plate 108, and the side electromagnets 400 are located between multiple perimeter electromagnets 300.

[0057] Specifically, the use of multiple side electromagnets 400 not only strengthens the overall attraction to the USB connector and prevents misalignment, but also allows the inductance value generated by the side electromagnets 400 when attracting the USB connector to determine the original position and current position of the USB connector, so that adjustments can be made later.

[0058] Specifically, the principle of using inductance to detect the position of the USB connector is as follows: when an electromagnet attracts a ferromagnetic material such as an iron block, this iron block becomes the magnetic core of the electromagnet. The addition of the iron core greatly enhances the magnetic field strength inside the coil. In order to maintain this stronger magnetic field, the coil needs to draw more energy from the power supply. In an AC circuit, this manifests as a significant increase in the inductance of the coil. Increasing inductance L → increasing inductive reactance XL → if the voltage V remains unchanged, according to Ohm's law for AC circuits, I=V / Z, the current I will increase. The position of the USB connector on the pressure plate 108 is detected by the increase in inductance and current.

[0059] The overall production process is divided into the following steps:

[0060] Step 1: The USB interface is placed into the through-hole 105 of the upper conveyor belt 102 by a robotic arm and fixed by a temporary storage structure. The PCB board is placed into the placement slot 106 of the second conveyor belt 104 by the robotic arm, and the shape of the slot matches the curvature of the PCB board.

[0061] Step 2: The first rotating roller 101 and the second rotating roller 103 drive the conveyor belt to synchronously transport the USB interface and the PCB board to the cylinder 107 of the pressing table 100. The laser receiver of the upper conveyor belt 102 is aligned with the laser emitter of the second conveyor belt 104 to confirm that the USB interface and the PCB board are vertically matched.

[0062] Step 3: Cylinder 107 drives the pressure plate 108 to move down, and the positioning structure is activated. During the detection process, the central electromagnet 200 attracts the center of the USB interface to prevent misalignment due to free fall. The surrounding electromagnets 300 detect the edge attraction status. If the inductance of a certain edge does not change, it is determined that the USB interface is offset.

[0063] When the USB interface is offset, dynamic offset correction is performed. The side-attracting electromagnet 403 is energized to use strong magnetic force to laterally pull the USB interface to reset.

[0064] Step 4: Cylinder 1079 pushes pressure plate 108 down, and the USB interface disengages from the upper flexible card plate 600 and contacts the PCB to achieve a snap-fit ​​connection.

[0065] The conductive ring 901, cylinder 107, central electromagnet 200, surrounding electromagnets 300, and side electromagnets 400 are all connected to the main controller 902 via wires. The main controller 902 detects the inductance values ​​of the central electromagnet 200 and the surrounding electromagnets 300. The formula for calculating the change in inductance is: , The permeability of free space, The relative permeability of the ferromagnetic material for the USB interface. The number of turns of the electromagnet coil. The cross-sectional area of ​​the magnetic circuit is... This is the length of the magnetic circuit;

[0066] The current value is fed back by the inductance value. A threshold for current change is set to determine whether the surrounding electromagnets 300 are successfully attracted. The calculation formula is as follows: , for The current value fed back by the inductance value, To set a threshold, when > When the adsorption is successful at this location, the USB interface is in the correct position. ≤ When a deviation is detected, a correction mechanism is triggered.

[0067] The revision mechanism is triggered by activating the side electromagnet 400 via the main controller 902. The formula for calculating the magnetic attraction force generated by the side electromagnet 400 is as follows: , For magnetic attraction, It represents the magnetic flux density. The cross-sectional area of ​​the magnetic circuit is... The permeability of vacuum. Relative permeability The number of turns of the electromagnet coil. For the current passing through the coil, This is the effective length of the magnetic circuit;

[0068] During the process of implementing the revision mechanism, the motion correction formula for the USB interface is: , It's about the quality of the USB interface. For acceleration, The elastic damping force of the soft rolling ball 500 This refers to the sliding friction between the pressure plate 108 and the USB interface.

[0069] The dynamic control logic formula of the main controller 902 is as follows: , This represents the deviation between the current position and the target position. and The preset proportional / derivative coefficients of the main controller 902 To adjust the current in real time and ensure a smooth reset of the USB interface, Let be the differential rate of change of the error.

[0070] The technical solutions in the above-described embodiments of this application have at least the following technical effects or advantages: Compared with Embodiment 2, in this embodiment, multiple peripheral electromagnets 300 are used to detect the peripheral edge positions of the corresponding USB connector. Once the peripheral edge positions are determined, continuously pressing down on the USB connector can greatly reduce the misalignment caused by the USB connector offset. Even when the USB connector is misaligned, multiple side-attracting electromagnets 403 can still actively adjust the position of the USB connector and actively adjust the USB connector to the designated position, reducing downtime. Overall, not only is the misalignment of the USB connector reduced, but it can also be actively adjusted according to the misalignment, reducing the time delay caused by production errors.

[0071] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An assembly and pressing fixture for manufacturing USB flash drive connectors, comprising a pressing table (100), characterized in that: The pressing table (100) is externally connected to an upper conveyor belt (102) and a second conveyor belt (104) via a set of first rotating rollers (101) and a set of second rotating rollers (103), respectively. The upper conveyor belt (102) has multiple through-holes (105) on its exterior. The pressing table (100) is externally connected to a cylinder (107) via a mounting base. The output shaft of the cylinder (107) is fixedly connected to a pressure plate (108). A temporary storage structure is externally connected to the through-holes (105). The temporary storage structure is used to temporarily store the USB interface at the through-hole (105) position. The second conveyor belt (104) has multiple placement slots (106) on its outside. The placement slots (106) are used to store the PCB board connected to the USB interface. The pressure plate (108) is equipped with a positioning structure. The positioning structure is used to ensure the connection accuracy when the pressure plate (108) pushes the USB interface and the PCB board to press together. The positioning structure includes a central electromagnet (200), which is fixedly connected to the center of the pressure plate (108). The central electromagnet (200) is used to magnetically attract the USB interface when the pressure plate (108) presses the USB interface close to the PCB board, so as to avoid misalignment when the USB interface moves down. The positioning structure also includes a plurality of perimeter electromagnets (300), which are located at the perimeter edges of the pressure plate (108). The plurality of perimeter electromagnets (300) are used to attract the perimeter edges of the USB interface and detect whether the perimeter edges of the USB interface are in the specified position. The bottom of the pressure plate (108) is fixedly connected to a plurality of side electromagnets (400), and the side electromagnets (400) are respectively located between the plurality of the surrounding electromagnets (300). Infrared positioning modules (800) are installed on both the upper conveyor belt (102) and the second conveyor belt (104). The infrared positioning modules (800) are laser emitters and laser receivers, respectively. The infrared positioning modules (800) on the upper conveyor belt (102) and the infrared positioning modules (800) on the second conveyor belt (104) are at the same level. The inner wall of the pressing table (100) is fixedly connected with a conductive ring (901), and the interior of the upper conveyor belt (102) and the second conveyor belt (104) are both fixedly connected with multiple conductive contact points (900). The multiple conductive contact points (900) are respectively connected to multiple infrared positioning modules (800), and the conductive ring (901) is connected to an external power source. The conductive ring (901), cylinder (107), central electromagnet (200), surrounding electromagnets (300) and side electromagnets (400) are all connected to the main controller (902) via wires. The dynamic control logic formula of the main controller (902) is as follows: , This represents the deviation between the current position and the target position. and The proportional / derivative coefficients preset by the main controller (902) To adjust the current in real time and ensure a smooth reset of the USB interface, Let be the differential rate of change of the error.

2. The assembly and pressing fixture for manufacturing and processing USB flash drive connectors according to claim 1, characterized in that: The outer side wall of the pressure plate (108) is provided with a moving groove (401), the side wall of the moving groove (401) is provided with a sliding groove (402), a slider (404) is slidably connected inside the sliding groove (402), and a side-attracting electromagnet (403) is fixedly connected outside the slider (404).

3. The assembly and pressing fixture for manufacturing and processing USB flash drive connectors according to claim 2, characterized in that: A soft rolling ball (500) is rotatably connected to the center of both the four-sided electromagnet (300) and the side electromagnet (400). The soft rolling ball (500) is used to assist the movement of the USB interface on the bottom of the pressure plate (108).

4. The assembly and pressing fixture for manufacturing and processing USB flash drive connectors according to claim 1, characterized in that: The temporary storage structure includes multiple upper soft card plates (600), which are fixedly connected to the side wall of the through opening (105) to form a U-shaped locking position. Both sides of the inner wall of the through opening (105) are fixedly connected to lower limit plates (700).

5. The assembly and pressing fixture for manufacturing and processing USB flash drive connectors according to claim 2, characterized in that: The inductance data values ​​of the central electromagnet (200) and the surrounding electromagnets (300) are detected by the main controller (902). The formula for calculating the change in inductance is as follows: , The permeability of free space, The relative permeability of the ferromagnetic material for the USB interface. The number of turns of the electromagnet coil. The cross-sectional area of ​​the magnetic circuit is... This is the length of the magnetic circuit; The current value is fed back by the inductance value. A threshold for current change is set to determine whether the surrounding electromagnets (300) are successfully attracted. The calculation formula is as follows: , for The current value fed back by the inductance value. To set a threshold, when > When the adsorption is successful at this location, the USB interface is in the correct position. ≤ When a deviation is detected, a correction mechanism is triggered. The revision mechanism is triggered by activating the side electromagnet (400) through the main controller (902). The formula for calculating the magnetic attraction force generated by the side electromagnet (400) is as follows: , For magnetic attraction, Magnetic flux density The cross-sectional area of ​​the magnetic circuit is... The permeability of vacuum. Relative permeability The number of turns of the electromagnet coil. For the current passing through the coil, This is the effective length of the magnetic circuit; During the process of implementing the revision mechanism, the motion correction formula for the USB interface is: , It's about the quality of the USB interface. For acceleration, The elastic damping force of the soft rolling ball (500) The sliding friction force between the pressure plate (108) and the USB interface.

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