PCB riveting device with self-guiding function

Abstract

The utility model discloses a PCB riveting device with self -directing function, including bottom fixed type positioning mechanism and top movable type pressure riveting mechanism. The bottom mechanism contains the positioning base of pin hole and the cable positioning seat of waist -shaped hole, and the height of cable positioning seat can be adjusted and fixed cable, avoid the lever effect and lead to the PCB warping. The top mechanism is by the press connecting block, the needle fixed block and the built -in positioning pin, the flexible positioning component elastic plunger of anti -static, movable needle, self -directing riveting assembly composition. Through single pin anti -over positioning, flexible pre -pressing guarantee flatness, self -directing riveting assembly realizes PIN foot accurate package direction, can complete all PIN foot's pressure riveting operation once, and the operation efficiency is more than 8 times than artificial promotion, reduces PCB and PIN foot damage rate simultaneously, and adapts factory mass production demand.

Description

Technical Field

[0001] This article relates to a PCB riveting device with self-guiding function. Background Technology

[0002] Against the backdrop of the rapid development of the precision electronics industry, the demand for PCB and housing component assembly is increasing daily, and the production model is gradually shifting from traditional small-batch operations to mass production. However, existing PCB crimping technology has significant shortcomings and is difficult to adapt to mass production requirements:

[0003] 1. Poor positioning accuracy and low efficiency: Existing technologies mostly rely on manual positioning by human eyes for single-point riveting. When dealing with precision components with multiple pins, the positioning error is large, and riveting needs to be completed point by point, resulting in extremely low work efficiency and failing to meet the cycle time requirements of mass production in factories.

[0004] 2. Poor consistency of riveting and easy damage to components: The PCB is fixed by manual pressing, which cannot guarantee the consistency of pressure and angle for each riveting, and is prone to appearance defects (NG). At the same time, the manual pressing process can easily cause the components to warp, which can damage the PCB or pins and increase production costs.

[0005] Therefore, there is an urgent need for a riveting device that can achieve precise positioning, efficient riveting, and protect components, in order to overcome the shortcomings of existing technologies. Utility Model Content

[0006] The present invention aims to overcome the shortcomings of existing PCB riveting devices, such as low positioning accuracy, poor operating efficiency, high component damage rate, and weak adaptability, and to provide a PCB riveting device with self-guiding function.

[0007] Through a collaborative mechanism of flexible pre-compression to maintain flatness and self-guided riveting components for precise wrapping, multiple components can be riveted simultaneously, increasing work efficiency by more than 8 times compared to manual methods. Meanwhile, the anti-static flexible structure and buffer design significantly reduce damage rates, making it adaptable to different specifications of PCBs, pins, and cables to meet mass production needs.

[0008] A PCB riveting device with self-guiding function includes a bottom fixed positioning mechanism and a top movable riveting mechanism;

[0009] The bottom fixed positioning mechanism includes a positioning base and a cable positioning seat; the upper surface of the positioning base is provided with a pin hole, and the positioning base is provided with an inner cavity for accommodating the PCB board and the housing to be assembled; the cable positioning seat is connected to the side of the positioning base, and the upper surface of the cable positioning seat is provided with a slot adapted to the shape of the cable.

[0010] The top movable riveting mechanism includes a press connecting block and a press pin fixing block; the press connecting block is used to connect to the output end of an external press or robot; the press pin fixing block has multiple mounting holes at different positions inside, and each mounting hole is equipped with a positioning pin, a flexible positioning component, and at least one self-guided riveting component.

[0011] The self-guided riveting assembly includes a spring, a pre-pressurized retaining block, and a fixing pin; the center of the pre-pressurized retaining block is provided with a guide hole adapted to the size of the PIN, and the top of the pre-pressurized retaining block is provided with a spring; the fixing pin passes through the guide hole of the pre-pressurized retaining block, and the bottom end face of the fixing pin is provided with a concave blind hole adapted to the riveting shape of the PIN; and the fixing pin and the pre-pressurized retaining block can move relative to each other.

[0012] Furthermore, the cable positioning seat has a waist-shaped hole on its side. The relative height between the cable positioning seat and the upper surface of the positioning base can be adjusted by the engagement of the waist-shaped hole and a bolt. This structure allows for flexible adaptation to PCB cables of different lengths and suspension positions. When there is a difference in height between the cable and the PCB board connection point, adjusting the height of the cable positioning seat ensures that the cable remains in a natural suspension state. This prevents the cable from pulling the PCB board off-center due to excessive tension, or from loosening and interfering with the riveting operation due to insufficient tension. It also reduces pulling damage to the cable sheath, improving the stability and adaptability of the cable positioning.

[0013] Furthermore, the flexible positioning component is an elastic plunger made of anti-static resin, connected to the pressure pin fixing block via threads. The extension length of the elastic plunger is adjustable. The core function of the elastic plunger is to apply uniform flexible pre-pressure to the PCB board before riveting. Its anti-static material prevents electrostatic discharge from damaging sensitive electronic components on the PCB board. This ensures that the PCB board and the housing to be assembled fit tightly against the positioning base, guaranteeing overall flatness, eliminating the risk of electrostatic damage, and improving compatibility with PCBs of different specifications.

[0014] Furthermore, the inner wall of the guide hole of the pre-pressure retaining block is provided with a 30°-45° guide slope. When there is a slight coaxiality deviation between the PIN and the guide hole, the slope can naturally correct the PIN posture through contact force. This significantly reduces the probability of PIN jamming during insertion, avoids PIN bending or PCB hole damage caused by hard contact, and shortens the alignment time between the PIN and the guide hole, improving positioning efficiency and accuracy.

[0015] Furthermore, the pressure pin fixing block is equipped with a movable pressure pin, and the side of the pressure pin fixing block is provided with a set screw hole. A set screw is installed in the set screw hole, and the end of the set screw abuts against the surface of the movable pressure pin. When there is a slight difference in the distribution position of the pins to be riveted, the set screw can be loosened to move the movable pressure pin to the appropriate position, and then the set screw can be tightened to fix it. This method can adapt to small-range pin position deviations without replacing the entire pressure pin fixing block, reducing the frequency of tooling changes, lowering production costs, and ensuring precise alignment between the pressure pin and the pins.

[0016] Furthermore, the fixing pins are secured with multiple set screw holes to prevent wobbling. The multiple fixing pins are adjusted by the set screws at the top to ensure that the relative heights of the multiple fixing pins are consistent. The function of the multiple set screw holes is to limit the radial wobbling of the fixing pins from multiple directions, ensuring the stability of the pin axis during riveting.

[0017] Furthermore, the slots on the upper surface of the cable positioning seat are V-shaped grooves with gradually decreasing width. The function of the V-shaped groove is to adapt to cables of different diameters using the "wedge self-locking" principle, automatically centering the cable. Therefore, it is not necessary to change the special slot according to the cable diameter, so as to achieve stable clamping of various specifications of cables, improve the adaptability of the device to different cables, and simplify the cable clamping operation and shorten the clamping time.

[0018] Furthermore, the positioning base is connected to the worktable surface by mounting bolts.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] This device uses locating pins and pin holes for initial positioning, which saves on-site installation and debugging time and improves the motion accuracy of the mechanism. Meanwhile, an adjustable cable positioning seat is provided, and the cable is fixed by a slot, which not only stably secures cables of different specifications and avoids tension interference, but also protects components and prevents lever-like prying and shaking during riveting.

[0021] During the riveting process, a flexible positioning component can provide uniform pressure, thereby ensuring the flatness of the PCB board. The self-guided riveting component uses guide holes and bevels to accurately wrap and guide the pins. Combined with a customized fixed pin structure, it can adapt to different pin distributions and specifications.

[0022] The overall structure supports simultaneous riveting of multiple pins, eliminating the need for manual point-by-point operation. Once the tooling is adapted, no repeated adjustments are required, significantly improving work efficiency to match mass production cycles. Simultaneously, it avoids damage to the PCB board and pins from rigid collisions, significantly reducing the defect rate. Attached Figure Description

[0023] Figure 1This is a front view of the overall structure of a PCB riveting device with self-guiding function;

[0024] Figure 2 This is a schematic diagram of the main structure of the riveting device in Embodiment 1;

[0025] Figure 3 This is a schematic diagram of the top structure of the riveting device in Embodiment 1;

[0026] Figure 4 This is a schematic diagram of the riveting device in Example 1 during riveting;

[0027] Figure 5 This is a schematic cross-sectional view of the flexible positioning component.

[0028] Figure 6 This is a cross-sectional view of the self-guided riveting unit;

[0029] In the diagram: 1. Positioning base, 2. Cable, 3. Cable positioning seat, 4. PCB board, 5. Housing to be assembled, 6. Pin, 7. Press connecting block, 8. Pressing pin fixing block, 9. Positioning pin, 10. Self-guided riveting assembly, 101. Spring, 102. Fixed pressing pin, 103. Pre-pressure retaining block, 11. Elastic plunger, 12. Movable pressing pin. Detailed Implementation

[0030] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0031] Example 1: As Figure 1-6 As shown, a PCB riveting device with self-guiding function consists of a bottom fixed positioning mechanism and a top movable riveting mechanism. The bottom fixed positioning mechanism includes a positioning base 1 and a cable positioning seat 3. The positioning base 1 is provided with pin holes and an inner cavity for accommodating the PCB board 4 and the housing 5 to be assembled. The cable positioning seat 3 is connected to the side of the positioning base 1 and has a slot on its upper surface that adapts to the shape of the cable. The slot is a V-shaped groove with a gradually decreasing width.

[0032] The top-mounted movable riveting mechanism includes a press connecting block 7 and a press pin fixing block 8. The press connecting block 7 is used to connect to an external press, and the press pin fixing block 8 is equipped with a positioning pin 9, an elastic plunger 11, and four self-guided riveting assemblies 10. The elastic plunger 11 is connected to the press pin fixing block 8 by threads and its extension length is adjustable.

[0033] The self-guided riveting assembly 10 consists of a spring 101, a pre-pressurized retaining block 103, and a fixed pressure pin 102. The pre-pressurized retaining block 103 has a guide hole in the center that is adapted to the PIN 6 and a spring 101 on the top. The fixed pressure pin 102 passes through the guide hole and has a concave blind hole at the bottom that is adapted to the riveting shape of the PIN 6. The pre-pressurized retaining block 103 and the fixed pressure pin 102 can move relative to each other.

[0034] The cable positioning seat 3 of the bottom fixed positioning mechanism has an oblong hole on its side. The relative height between the oblong hole and the upper surface of the positioning base 1 can be adjusted by the cooperation of the bolt. The positioning base 1 is connected to the workbench surface by the mounting bolt, providing a stable support foundation for the whole and ensuring the positioning reliability of the bottom structure during the riveting process.

[0035] The guide hole inner wall of the pre-pressure retaining block 103 is provided with a 45° guide slope. A movable pressure pin 12 is provided on the pressure pin fixing block 8. A set screw in the side set screw hole abuts against the movable pressure pin 12 to fix its position. The fixed pressure pin 102 is fixed by multiple set screw holes to prevent shaking, and the relative height of the multiple fixed pressure pins 102 can be adjusted to be consistent through the top set screw, ensuring the accuracy and consistency of the riveting action. The fixed pressure pin is used in special cases where the PIN position is inconsistent with the common PIN position, and can be flexibly selected according to site requirements.

[0036] Usage process:

[0037] I. Tooling Adaptation:

[0038] Start the external press or robot arm to drive the top riveting mechanism (including press connecting block 7 and press pin fixing block 8) down, so that the positioning pin 9 of the riveting mechanism is inserted into the pin hole of the positioning base 1 of the bottom positioning mechanism, thereby achieving coarse positioning of the upper and lower mechanisms.

[0039] Manually fine-tune the position of the top riveting mechanism so that all the pins 6 to be riveted are aligned with the guide holes of the pre-press holding block 103 of the self-guided riveting assembly 10 in the top riveting mechanism.

[0040] After the adaptation is completed, the positioning base 1 of the bottom positioning mechanism is locked to the worktable and the pressure pin fixing block 8 of the top riveting mechanism is locked to the press connecting block 7 by bolts. No repeated adjustment is required for subsequent mass production.

[0041] 2. Riveting operation: The external press drives the top riveting mechanism to slowly descend.

[0042] ① The elastic plunger 11 of the top riveting mechanism first contacts the upper surface of the PCB board 4, providing uniform top pressure so that the PCB board 4 and the bottom housing 5 to be assembled are tightly attached to the positioning base 1 of the bottom positioning mechanism, ensuring the flatness of each part.

[0043] ② The top riveting mechanism continues to descend, and the pre-pressure retaining block 103 of the self-guided riveting assembly 10 first contacts the upper surface of the PCB board 4 and moves upward. At the same time, it compresses the spring 101 of the self-guided riveting assembly 10 and completely wraps the PIN 6 through the guide hole of the pre-pressure retaining block 103. Under the elastic force of the spring 101, the PCB board 4 and the housing 5 to be assembled are completely positioned to avoid horizontal displacement.

[0044] ③ Finally, the fixed pin 102 of the self-guided riveting assembly 10 or the movable pin 12 of the top riveting mechanism contacts the PIN 6 and completes the riveting under the pressure of the press. After the riveting is completed, the top riveting mechanism rises and the pre-press holding block 103 is reset under the action of the spring 101. The riveted PCB board 4 assembly can then be removed.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A PCB riveting device with self-guiding function, characterized in that, Includes a bottom fixed positioning mechanism and a top movable riveting mechanism; The bottom fixed positioning mechanism includes a positioning base and a cable positioning seat; the upper surface of the positioning base is provided with a pin hole, and the positioning base is provided with an inner cavity for accommodating the PCB board and the housing to be assembled; the cable positioning seat is connected to the side of the positioning base, and the upper surface of the cable positioning seat is provided with a slot adapted to the shape of the cable. The top movable riveting mechanism includes a press connecting block and a press pin fixing block; the press connecting block is used to connect to the output end of an external press or robot; the press pin fixing block has multiple mounting holes at different positions inside, and each mounting hole is equipped with a positioning pin, a flexible positioning component, and at least one self-guided riveting component. The self-guided riveting assembly includes a spring, a pre-pressurized retaining block, and a fixing pin; the center of the pre-pressurized retaining block is provided with a guide hole adapted to the size of the PIN, and the top of the pre-pressurized retaining block is provided with a spring; the fixing pin passes through the guide hole of the pre-pressurized retaining block, and the bottom end face of the fixing pin is provided with a concave blind hole adapted to the riveting shape of the PIN; and the fixing pin and the pre-pressurized retaining block can move relative to each other.

2. The PCB riveting device with self-guiding function according to claim 1, characterized in that, The cable positioning seat has an oblong hole on its side, and the relative height between the cable positioning seat and the upper surface of the positioning base can be adjusted by the cooperation of the oblong hole and the bolt.

3. The PCB riveting device with self-guiding function according to claim 1, characterized in that, The flexible positioning component is an elastic plunger made of antistatic resin. It is connected to the pressure needle fixing block by threads, and the extension length of the elastic plunger is adjustable.

4. A PCB riveting device with self-guiding function according to claim 2 or 3, characterized in that, The guide hole of the pre-compression retaining block is provided with a guide slope of 30°-45°.

5. A PCB riveting device with self-guiding function according to claim 4, characterized in that, The pressure needle fixing block is provided with a movable pressure needle, and the side of the pressure needle fixing block is provided with a set screw hole. A set screw is provided in the set screw hole, and the end of the set screw abuts against the surface of the movable pressure needle.

6. A PCB riveting device with self-guiding function according to claim 4, characterized in that, The fixing pins are fixed in place by multiple set screw holes to prevent shaking. The multiple fixing pins are adjusted by the set screws at the top to make the relative height of the multiple fixing pins consistent.

7. A PCB riveting device with self-guiding function according to claim 4, characterized in that, The slot on the upper surface of the cable positioning seat is a V-shaped groove with a gradually decreasing width.

8. A PCB riveting device with self-guiding function according to claim 4, characterized in that, The positioning base is connected to the worktable surface by mounting bolts.

Images