A circuit board edge grinding device

Abstract

This utility model discloses a circuit board edge grinding device, relating to the field of circuit board processing technology. It includes a support base with a groove on one side of its top. A slider is slidably connected to the groove via a first driving mechanism. A movable base is fixedly connected to the top of the slider. Insertion holes are provided on both sides of the top of the movable base. A rotating shaft is rotatably connected to the top of the movable base. A rotating block is fixedly connected to the top of the rotating shaft. A through groove is provided on the rotating block, and a second sliding groove communicating with the through groove is provided on the top of the rotating block. Clamping blocks are slidably provided on both sides inside the through groove. This utility model achieves uniform clamping and stable fixation of the circuit board, effectively avoiding displacement and surface damage. Simultaneously, through a rapid angle switching function, it reduces repeated clamping time, significantly improving processing efficiency and automation level, and ensuring operational safety and reliability.

Description

Technical Field

[0001] This utility model relates to the field of circuit board processing technology, and in particular to a circuit board edge grinding device. Background Technology

[0002] In the electronics manufacturing industry, printed circuit boards (PCBs) are an essential component of various electronic products. During the production process, due to cutting, drilling, and other techniques, burrs or unevenness often appear on the edges of PCBs, affecting subsequent assembly accuracy and product appearance quality. Therefore, edge grinding of PCBs is an indispensable process.

[0003] A Chinese patent with publication number CN220463248U, entitled "A Circuit Board Edge Grinding Device," includes a support plate with multiple support rods fixedly connected to its bottom. A mounting frame is located on the top of the support plate, containing a fixing mechanism. A connecting mechanism connects the mounting frame and the support plate. A grinding mechanism is located on one side of the mounting frame. The fixing mechanism includes a sliding groove and a fixing frame. Two sliding grooves are located on the top of the mounting frame and are symmetrically distributed about the center line of the mounting frame. While this patent solves the problem of clamping circuit boards of different sizes and improves the applicability and clamping stability of the device, it still has certain limitations in actual grinding processes. Specifically, the existing structure can only grind one side of the circuit board. If multiple sides need to be processed, the operator must repeatedly disassemble and reassemble the circuit board, adjusting its position, resulting in low processing efficiency, cumbersome operation, and increased labor costs and production time. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a circuit board edge grinding device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A circuit board edge grinding device includes a support base. A groove is formed on one side of the top of the support base. A slider is slidably connected to the groove via a first driving mechanism. A movable base is fixedly connected to the top of the slider. Insertion holes are formed on both sides of the top of the movable base. A rotating shaft is rotatably connected to the top of the movable base. A rotating block is fixedly connected to the top of the rotating shaft. A through groove is formed on the rotating block. A second sliding groove communicating with the through groove is formed on the top of the rotating block. Clamping blocks are slidably arranged on both sides inside the through groove. A second driving mechanism for driving the two clamping blocks to move is provided on the top of the rotating block. Support frames are fixedly connected to both ends of the rotating block. A fixing mechanism connected to the movable base is provided in each of the two support frames. A slot is formed on the other side of the top of the support base. An installation frame is fixedly connected to the bottom of the support base at the slot. A collecting frame is slidably arranged in the installation frame. A grinding mechanism is provided on the top of the support base at the slot.

[0007] As a further improvement of this utility model, the first driving mechanism includes a second threaded rod rotatably connected to both sides inside the groove. The second threaded rod is threadedly connected to the slider. A first single-head motor is fixedly connected to one side of the support base. The output shaft end of the first single-head motor passes through the groove and is fixedly connected to the second threaded rod.

[0008] As a further improvement of this utility model, the second driving mechanism includes a double-headed motor fixedly connected to the top of the rotating block. The two output shaft ends of the double-headed motor are fixedly connected to a first threaded rod. The other ends of the two first threaded rods are rotatably connected to a support block. The two support blocks are fixedly connected to the top of the rotating block. The tops of the two clamping blocks extend into second sliding grooves and are threadedly connected to the two first threaded rods respectively.

[0009] As a further improvement of this utility model, the fixing mechanism includes a movable plate that slides within a support frame. A pulling block is provided above the support frame. The bottom of the pulling block passes through the support frame and is fixedly connected to the top of the movable plate. A plug-in post is fixedly connected to the bottom of the movable plate. The bottom of the plug-in post is inserted into a plug-in hole. A spring that is sleeved with the plug-in post is fixedly connected to the bottom of the movable plate. The other end of the spring is fixedly connected to the top of the movable seat.

[0010] As a further improvement of this utility model, the grinding mechanism includes a shielding frame fixedly connected to the top of the support base, a grinding block rotatably connected to the inner wall of the shielding frame, and a second single-head motor fixedly connected to the top of the support base. The output shaft end of the second single-head motor passes through the shielding frame and is fixedly connected to the grinding block.

[0011] As a further improvement of this utility model, the top of the rotating block is provided with first sliding grooves on both sides of the second sliding groove, which are connected to the inside of the through groove. The top two ends of the clamping block are provided with protrusions integrally formed therewith, and the two protrusions are respectively located in the two first sliding grooves.

[0012] The beneficial effects of this utility model are:

[0013] By incorporating dual-head motor-driven clamping blocks, bidirectional synchronous clamping of the circuit board is achieved. During clamping, both clamping blocks are driven by the same power source, resulting in uniform clamping force distribution. This effectively prevents circuit board misalignment or damage due to uneven force. Simultaneously, the rubber-material clamping blocks ensure clamping stability while preventing damage to the circuit board surface, enhancing the safety and reliability of the clamping process. The rotating block is rotatably connected to the moving base via a rotating shaft. In the clamping state, it can drive the entire circuit board to rotate. Combined with the fixing mechanism consisting of a support frame, insertion posts, and springs, operators can quickly switch processing angles without disassembling the circuit board. This enables continuous grinding operations on both sides of the circuit board, significantly reducing the operation time caused by repeated clamping and improving processing efficiency and automation.

[0014] This invention achieves uniform clamping and stable fixation of circuit boards, effectively avoiding displacement and surface damage. At the same time, the quick angle switching function reduces the time spent on repeated clamping, significantly improving processing efficiency and automation level, and ensuring the safety and reliability of operation. Attached Figure Description

[0015] Figure 1 This is a top view structural diagram of a circuit board edge grinding device proposed in this utility model.

[0016] Figure 2 This is a top view of a partial cross-sectional structural diagram of a circuit board edge grinding device proposed in this utility model;

[0017] Figure 3 This is a partial cross-sectional structural diagram of the second drive mechanism, fixing machine, slider, moving seat, rotating shaft, rotating block, clamping block, first sliding groove, and through groove connection of a circuit board edge grinding device proposed in this utility model.

[0018] Figure 4 This is a partial cross-sectional structural diagram of the connection between the rotating block, the second driving mechanism, and the clamping block of the circuit board edge grinding device proposed in this utility model.

[0019] In the diagram: 1 Support base, 2 Groove, 3 First single-head motor, 4 Moving base, 5 Rotating block, 6 Covering frame, 7 Second single-head motor, 8 Grinding block, 9 Mounting frame, 10 Collection frame, 11 Slot, 12 Through slot, 13 First sliding groove, 14 Second sliding groove, 15 Double-head motor, 16 First threaded rod, 17 Insertion hole, 18 Rotating shaft, 19 Support frame, 20 Insertion post, 21 Spring, 22 Moving plate, 23 Pulling block, 24 Support block, 25 Clamping block, 26 Slider, 27 Second threaded rod, 28 Protrusion. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Figures 1-4 A circuit board edge grinding device includes a support base 1. A groove 2 is formed on one side of the top of the support base 1. A slider 26 is slidably connected to the groove 2 through a first drive mechanism. Both the slider 26 and the groove 2 are inverted T-shaped. The groove 2 provides a linear motion track for the slider 26. The first drive mechanism includes a second threaded rod 27 that is rotatably connected to both sides inside the groove 2. The second threaded rod 27 converts the rotational motion into linear motion. The second threaded rod 27 is threadedly connected to the slider 26 to achieve precise displacement control. A first single-head motor 3 is fixedly connected to one side of the support base 1 to provide power for the movement of the slider 26. The output shaft end of the first single-head motor 3 passes through the groove 2 and is fixedly connected to the second threaded rod 27.

[0022] A movable base 4 is fixedly connected to the top of the slider 26. Insertion holes 17 are provided on both sides of the top of the movable base 4 for positioning. A rotating shaft 18 is rotatably connected to the top of the movable base 4. A rotating block 5 is fixedly connected to the top of the rotating shaft 18. The rotating shaft 18 enables the rotation adjustment function of the rotating block 5. A through groove 12 is provided on the rotating block 5 to accommodate the circuit board. The rotation of the rotating block 5 can drive the circuit board to rotate together, allowing for grinding of both sides of the circuit board without removing it in one operation. A second sliding groove 14 communicating with the through groove 12 is provided on the top of the rotating block 5. Clamping blocks 25 are slidably provided on both sides inside the through groove 12, clamping blocks 25 clamping and fixing the circuit board. A second driving mechanism is provided on the top of the rotating block 5 to drive the two clamping blocks 25 to move. The second driving mechanism includes a double-headed motor 15 fixedly connected to the top of the rotating block 5. The double-headed motor 15 achieves bidirectional synchronous drive, and both output shaft ends of the double-headed motor 15 are fixed. The rotating block 5 is connected to a first threaded rod 16. The other ends of the two first threaded rods 16 are rotatably connected to support blocks 24. The two support blocks 24 are fixedly connected to the top of the rotating block 5. The tops of the two clamping blocks 25 extend into second sliding grooves 14 and are threadedly connected to the two first threaded rods 16 respectively. The first threaded rods 16 convert the rotational motion into the linear motion of the two clamping blocks 25, thereby driving the two clamping blocks 25 to move closer or further away from each other to clamp the circuit board. At the same time, the two clamping blocks 25 are made of rubber, which can clamp the circuit board well without damaging it. The top of the rotating block 5 is provided with first sliding grooves 13 on both sides of the second sliding groove 14, which communicate with the inside of the through groove 12. The top ends of the clamping blocks 25 are provided with protrusions 28 integrally formed with them. The two protrusions 28 are located in the two first sliding grooves 13 respectively. The two protrusions 28 are located in the two first sliding grooves 13 respectively to ensure the linear motion of the clamping blocks 25.

[0023] Support frames 19 are fixedly connected to both ends of the rotating block 5. Each of the two support frames 19 is equipped with a fixing mechanism connected to the movable seat 4. The fixing mechanism includes a movable plate 22 that slides within the support frame 19. A pull block 23 is provided above the support frame 19. The pull block 23 is easy to operate manually. The bottom of the pull block 23 passes through the support frame 19 and is fixedly connected to the top of the movable plate 22. A plug-in post 20 is fixedly connected to the bottom of the movable plate 22. The bottom of the plug-in post 20 is inserted into the plug-in hole 17. The plug-in post 20 and the plug-in hole 17 cooperate to fix the rotating block 5. A spring 21 sleeved with the plug-in post 20 is fixedly connected to the bottom of the movable plate 22. The spring 21 provides an automatic reset function. The other end of the spring 21 is fixedly connected to the top of the movable seat 4.

[0024] A slot 11 is provided on the other side of the top of the support base 1. A mounting frame 9 is fixedly connected to the bottom of the support base 1 at the slot 11. The mounting frame 9 is used to collect grinding waste. A collection frame 10 is slidably provided inside the mounting frame 9. The collection frame 10 facilitates waste cleaning. A grinding mechanism is provided at the top of the support base 1 at the slot 11. The grinding mechanism includes a shielding frame 6 fixedly connected to the top of the support base 1. The shielding frame 6 prevents grinding splashes. A grinding block 8 is rotatably connected to the inner wall of the shielding frame 6. The grinding block 8 performs edge grinding processing on the circuit board. A second single-head motor 7 is fixedly connected to the top of the support base 1. The output shaft end of the second single-head motor 7 passes through the shielding frame 6 and is fixedly connected to the grinding block 8. The second single-head motor 7 provides power to the grinding block 8.

[0025] In use, the operator first places the circuit board into the through slot 12 of the rotating block 5, ensuring that both ends of the circuit board extend out of the through slot 12. The dual-head motor 15 is then started to drive the first threaded rod 16 to rotate, causing the two rubber clamping blocks 25 to move synchronously towards each other and clamp the circuit board. Next, the second single-head motor 7 is started to drive the grinding block 8 to rotate. Simultaneously, the first single-head motor 3, through the second threaded rod 27, drives the slider 26 and the clamped circuit board towards the grinding block 8 for single-sided edge grinding. After completing edge grinding on one side, the second single-head motor 7 is started to drive the second single-head motor 26 to rotate. A single-head motor 3 drives the slider 26 to reset. Then, the operator pulls the pull block 23 upward to disengage the plug 20 from the plug hole 17. The operator manually rotates the rotating block 5 180 degrees so that the other side of the circuit board faces the grinding block 8. The operator releases the pull block 23 so that the plug 20 is reinserted into the plug hole 17 under the action of the spring 21 and fixed in the position. The first single-head motor 3 is started again to move the circuit board to complete the grinding of the other side. The waste generated during the grinding process falls into the collection box 10 in the mounting frame 9 through the slot 11 and can be periodically removed for cleaning.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A circuit board edge grinding device comprising a support base (1), characterized in that, The support base (1) has a groove (2) on one side of its top. The groove (2) is slidably connected to a slider (26) via a first driving mechanism. A movable base (4) is fixedly connected to the top of the slider (26). Insertion holes (17) are provided on both sides of the top of the movable base (4). A rotating shaft (18) is rotatably connected to the top of the movable base (4). A rotating block (5) is fixedly connected to the top of the rotating shaft (18). A through groove (12) is provided on the rotating block (5). A second sliding groove (14) communicating with the through groove (12) is provided on the top of the rotating block (5). The inside of the through groove (12) Both sides are provided with slidable clamping blocks (25). The top of the rotating block (5) is provided with a second driving mechanism to drive the two clamping blocks (25) to move. The two ends of the rotating block (5) are fixedly connected with support frames (19). Both support frames (19) are provided with a fixing mechanism connected to the moving seat (4). The other side of the top of the support seat (1) is provided with a slot (11). The bottom of the support seat (1) is fixedly connected with an installation frame (9) at the slot (11). The installation frame (9) is slidably provided with a collection frame (10). The top of the support seat (1) is provided with a grinding mechanism at the slot (11).

2. The edge grinding apparatus for a circuit board according to claim 1, wherein The first driving mechanism includes a second threaded rod (27) rotatably connected to both sides inside the groove (2). The second threaded rod (27) is threadedly connected to the slider (26). A first single-head motor (3) is fixedly connected to one side of the support base (1). The output shaft end of the first single-head motor (3) passes through the groove (2) and is fixedly connected to the second threaded rod (27).

3. The edge grinding apparatus for a circuit board according to claim 1, wherein The second drive mechanism includes a double-headed motor (15) fixedly connected to the top of the rotating block (5). The two output shaft ends of the double-headed motor (15) are fixedly connected to a first threaded rod (16). The other ends of the two first threaded rods (16) are rotatably connected to a support block (24). The two support blocks (24) are fixedly connected to the top of the rotating block (5). The tops of the two clamping blocks (25) extend into a second slide groove (14) and are threadedly connected to the two first threaded rods (16) respectively.

4. The edge grinding apparatus for a circuit board according to claim 1, wherein The fixing mechanism includes a movable plate (22) that slides within a support frame (19). A pull block (23) is provided above the support frame (19). The bottom of the pull block (23) passes through the support frame (19) and is fixedly connected to the top of the movable plate (22). A plug-in post (20) is fixedly connected to the bottom of the movable plate (22). The bottom of the plug-in post (20) is inserted into a plug-in hole (17). A spring (21) fitted onto the plug-in post (20) is fixedly connected to the bottom of the movable plate (22). The other end of the spring (21) is fixedly connected to the top of the movable seat (4).

5. The circuit board edge grinding device according to claim 1, characterized in that, The polishing mechanism includes a shielding frame (6) fixedly connected to the top of the support base (1), a polishing block (8) rotatably connected to the inner wall of the shielding frame (6), and a second single-head motor (7) fixedly connected to the top of the support base (1). The output shaft end of the second single-head motor (7) passes through the shielding frame (6) and is fixedly connected to the polishing block (8).

6. The circuit board edge grinding device according to claim 1, characterized in that, The top of the rotating block (5) is provided with first grooves (13) on both sides of the second groove (14) that communicate with the inside of the through groove (12). The top two ends of the clamping block (25) are provided with protrusions (28) integrally formed therewith. The two protrusions (28) are respectively located in the two first grooves (13).

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