Limiting device for PCBA circuit board production

Abstract

The utility model discloses a limiting device for PCBA circuit board production, which comprises a working table, fixed columns are symmetrically and fixedly arranged at the top end of the working table, the outer sides of the two fixed columns are connected with a same cover plate in a sliding manner, the bottom end of the cover plate is fixedly connected with a plurality of pressing heads, a circuit board base is arranged in the working table in a sliding manner, and the circuit board base is connected with the cover plate in a sliding manner. A circuit board mold is embedded and mounted in the circuit board base, an inclined block is fixedly connected to the bottom end of the circuit board base, and the inclined block is slidably mounted in the workbench; the inclined block and the circuit board base are driven to slowly and synchronously ascend by moving the extrusion block, the circuit board is clamped and limited between the pressing head and the circuit board base in cooperation with the pressing head on the cover plate, and the problem that the downward moving distance of the cover plate is too large due to the fact that a handle on equipment is directly rotated is avoided; and the circuit board is ensured to be properly fastened and not to be excessively extruded and cracked.

Description

Technical Field

[0001] This utility model belongs to the field of circuit board manufacturing technology, and in particular relates to a limiting device for PCBA circuit board manufacturing. Background Technology

[0002] PCBA is short for Printed Circuit Board Assembly. A PCB is just a bare board, while a PCBA is a finished product with electronic components mounted on the PCB and soldered on. The core function of a PCBA is to realize the electrical connection and signal transmission of circuits. It is widely used in televisions, computers, mobile phones, automotive electronics and medical equipment.

[0003] In actual use, the existing limiting device for PCBA circuit board production uses a handle on a rotating linkage mechanism to drive the cover plate downward and clamp and limit the circuit board. When the handle is turned directly, the cover plate may move down too far due to improper operation or mechanical inertia, causing the circuit board to be damaged and cracked due to excessive pressure, which affects the service life of the product. Utility Model Content

[0004] This utility model addresses the problem in the prior art where, when the handle is directly rotated, the cover plate may move down too far due to improper operation or mechanical inertia, causing excessive pressure on the circuit board, resulting in damage and cracking, and affecting the product's service life. The following technical solution is proposed:

[0005] A limiting device for PCBA circuit board production includes: a worktable, with fixed columns symmetrically fixedly installed at the top of the worktable, a cover plate slidably connected to the outer sides of the two fixed columns, a plurality of clamping heads fixedly connected to the bottom end of the cover plate, a circuit board base slidably installed inside the worktable, a circuit board mold embedded inside the circuit board base, a wedge block fixedly connected to the bottom end of the circuit board base, the wedge block slidably installed inside the worktable, an extrusion block slidably installed inside the worktable, a groove being formed inside the worktable corresponding to the outer position of the extrusion block, and an extrusion rod being threadedly connected inside the worktable.

[0006] As a preferred embodiment of the above technical solution, the front and back sides of the inclined block are integrally formed with limit strips.

[0007] As a preferred embodiment of the above technical solution, a return spring is symmetrically fixedly connected to the side of the extrusion block near the extrusion rod, and the ends of the two return springs away from the extrusion block are fixedly connected to the inner wall of the worktable.

[0008] As a preferred embodiment of the above technical solution, a limiting plate is symmetrically slidably installed inside the circuit board base. The bottom end of the limiting plate near the circuit board mold is in contact with the top end of the circuit board mold, and the end of the limiting plate away from the circuit board mold has an integrally formed protrusion.

[0009] As a preferred embodiment of the above technical solution, a spring telescopic rod is fixedly installed inside the circuit board base, a sleeve rod is rotatably sleeved on the outer side of one end of the spring telescopic rod, and a rectangular frame is fixedly connected to the top end of the sleeve rod.

[0010] As a preferred embodiment of the above technical solution, the rectangular frame is hollow inside and fits onto the raised outer surface.

[0011] The beneficial effects of this utility model are as follows:

[0012] (1) This utility model uses the moving extrusion fastener to drive the inclined block and the circuit board base to rise slowly and synchronously. With the pressing head on the cover plate, the circuit board is clamped and limited between the pressing head and the circuit board base. This avoids the problem of the cover plate moving too far down when the handle on the equipment is directly rotated, and ensures that the circuit board is properly tightened without being over-compressed and cracked.

[0013] (2) By detachably installing the circuit board mold on the limiting device, this utility model enables the limiting operation of circuit boards of different sizes without directly replacing the entire limiting device when clamping and limiting circuit boards of different sizes. This simplifies the operation process and production costs, and improves work efficiency. Attached Figure Description

[0014] Figure 1 The diagram shown is a schematic of the overall structure of a limiting device used in PCBA circuit board production.

[0015] Figure 2 The diagram shown is a cross-sectional view of the internal structure of the workbench;

[0016] Figure 3 The diagram shown is a structural schematic of the circuit board base and the extrusion block;

[0017] Figure 4 What is shown is Figure 3 A schematic diagram of the structure of region A in the middle.

[0018] In the diagram: 1. Workbench; 2. Fixed column; 3. Cover plate; 301. Pressing head; 4. Circuit board base; 5. Circuit board mold; 6. Inclined block; 601. Limiting strip; 7. Extrusion block; 8. Slide groove; 9. Extrusion rod; 10. Return spring; 11. Limiting plate; 1101. Protrusion; 12. Spring telescopic rod; 13. Sleeve rod; 14. Rectangular frame. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0020] This utility model provides a limiting device for PCBA circuit board production, such as Figures 1 to 4 As shown, the device includes: a workbench 1, with fixed posts 2 symmetrically fixedly installed at the top of the workbench 1. A cover plate 3 is slidably connected to the outer sides of the two fixed posts 2. Multiple clamping heads 301 are fixedly connected to the bottom of the cover plate 3. Existing circuit board production limiting devices also include a linkage mechanism installed at the top of the cover plate 3. In actual use, the operator rotates the handle on the linkage mechanism, which, under the action of the fixed posts 2, drives the linkage at the top of the cover plate 3 to move downwards. When the linkage moves downwards, it in turn pushes the cover plate 3 and the clamping heads 301 downwards synchronously. All of the above are existing technologies and will not be elaborated further here. A circuit board base 4 is slidably installed inside the workbench 1. A circuit board mold 5 is embedded inside the circuit board base 4. A wedge block 6 is fixedly connected to the bottom of the circuit board base 4. The wedge block 6 can slide vertically inside the workbench 1. An extrusion block 7 is slidably installed inside the workbench 1. The end face near the inclined block 6 is also inclined, and the slope of the inclined part of the extrusion block 7 and the inclined block 6 is the same. The inside of the workbench 1 is provided with a groove 8 corresponding to the outer position of the extrusion block 7. The inside of the workbench 1 is connected to the extrusion rod 9 by a thread. The side of the extrusion block 7 near the extrusion rod 9 is symmetrically fixed with a return spring 10. The ends of the two return springs 10 away from the extrusion block 7 are fixedly connected to the inner wall of the workbench 1. One end of the extrusion rod 9 and the vertical surface of the extrusion block 7 are in contact with each other. The contact point of the extrusion rod 9 on the extrusion block 7 is located at the center position between the two return springs 10. When the extrusion rod 9 pushes the extrusion block 7 to move towards the inclined block 6, the return spring 10 is stretched and deformed. When the extrusion rod 9 rotates in the opposite direction and is pulled out from the workbench 1, the rebound force generated by the deformed return spring 10 can drive the extrusion block 7 to slide back and return to its original position.

[0021] like Figures 1 to 4As shown, a limiting plate 11 is symmetrically slidably installed inside the circuit board base 4. The bottom end of the limiting plate 11 near the circuit board mold 5 is in contact with the top end of the circuit board mold 5, so that the limiting plate 11 can fix the circuit board mold 5 in the circuit board base 4 and prevent it from sliding out of the circuit board base 4 due to external force. The end of the limiting plate 11 away from the circuit board mold 5 has a protrusion 1101 integrally formed. By grasping the protrusion 1101 and pulling it outward, the limiting plate 11 in the circuit board base 4 can be pulled out, and the fixed state of the circuit board mold 5 can be released, so as to replace the new circuit board mold 5. The internal structure of the circuit board base 4 is fixed. A spring telescopic rod 12 is fixedly installed. A sleeve rod 13 is rotatably sleeved on the outer side of one end of the spring telescopic rod 12. A rectangular frame 14 is fixedly connected to the top of the sleeve rod 13. The rectangular frame 14 is hollow inside and fits onto the outer surface of the protrusion 1101. The rectangular frame 14, which is completely fitted onto the protrusion 1101, fixes the limiting plate 11 in the circuit board base 4. The fixed limiting plate 11 further fixes the circuit board mold 5 in the circuit board base 4, preventing the circuit board mold 5 from coming out of the circuit board base 4 due to external force during the limiting and clamping process of the circuit board, thus ensuring the stability and safety during operation.

[0022] like Figure 2 and Figure 3 As shown, the front and back of the inclined block 6 are integrally formed with a limiting strip 601. The inside of the worktable 1 is provided with a through groove corresponding to the outer position of the limiting strip 601. When the extrusion block 7 pushes the inclined block 6 upward, the limiting strip 601 slides stably inside the through groove, ensuring that the inclined block 6 can move stably in the predetermined direction and avoiding the phenomenon of the inclined block 6 deviating or tilting during the movement.

[0023] Working Principle: In actual use, the operator places the circuit board to be processed in the circuit board mold 5, then rotates the handle of the existing linkage mechanism. Under the limiting action of the fixed column 2, the rotating handle drives the connecting rod at the top of the cover plate 3 to move downward, thereby causing the cover plate 3 and the pressing head 301 to slide closer to the circuit board. Then, the operator continues to rotate the handle on the linkage mechanism to make the cover plate 3 slide further down, so that the pressing head 301 slides to the top of the circuit board in the circuit board base 4, and the pressing head 301 does not contact the circuit board. Then, the operator finely adjusts the rotating extrusion rod 9, so that it moves closer to the extrusion block 7 through the action of the threaded connection. When the end of the extrusion rod 9 contacts the extrusion block 7, the operator continues to rotate. The extrusion rod 9 pushes the extrusion block 7 towards the inclined block 6, so that the inclined blocks 6 and the inclined ends of the extrusion block 7 come into contact with each other. Then, the extrusion rod 9 is rotated by fine adjustment, so that the inclined block 6 is pushed by the extrusion block 7 and slides upward, thereby driving the circuit board base 4 to move upward. When the circuit board base 4 moves upward, it drives the circuit board mold 5 and the circuit board to move upward synchronously, so that the circuit board comes into contact with the clamping head 301 at its top, thereby clamping and fixing the circuit board between the clamping head 301 and the circuit board mold 5. This effectively prevents the cover plate 3 from moving too far downward when the handle is turned with great force, thereby avoiding damage to the circuit board in the circuit board mold 5 due to excessive extrusion, and ensuring that the circuit board is properly tightened without being excessively extruded and cracked.

[0024] When limiting the position of different circuit boards, simultaneously pull outwards the sleeve rods 13 on both sides of the circuit board base 4, causing the rectangular frame 14 to move synchronously and slide off the protrusion 1101. After the rectangular frame 14 has completely slid off the protrusion 1101, rotate the sleeve rod 13 180 degrees and release it. Under the action of the spring telescopic rod 12, the sleeve rod 13 and the rectangular frame 14 move in opposite directions to the side of the circuit board base 4, thereby putting the limiting plate 11 inside the circuit board base 4 into a sliding state. Then, grasp the protrusion 1101 and... The two limiting plates 11 at the top of the circuit board mold 5 are pulled out. Then, the new circuit board mold 5 is placed in the circuit board base 4, and the two limiting plates 11 are slid back into the circuit board base 4 and placed at the top of the circuit board mold 5. The sleeve rod 13 is pulled outward and rotated 180 degrees again. The sleeve rod 13 is released, and the spring telescopic rod 12 retracts, causing the rectangular frame 14 to engage in the opposite direction with the outside of the protrusion 1101, so that the limiting plates 11 in the circuit board mold 5 are fixed and cannot slide, thereby fixing the new circuit board mold 5 in the circuit board base 4.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A limiting device for PCBA circuit board production, characterized in that, include: A workbench (1) is provided, with fixed columns (2) symmetrically fixedly installed at the top of the workbench (1). The two fixed columns (2) are slidably connected to the same cover plate (3). Multiple pressing heads (301) are fixedly connected to the bottom of the cover plate (3). A circuit board base (4) is slidably installed inside the workbench (1). A circuit board mold (5) is embedded inside the circuit board base (4). An inclined block (6) is fixedly connected to the bottom of the circuit board base (4). The inclined block (6) is slidably installed inside the workbench (1). An extrusion block (7) is slidably installed inside the workbench (1). A groove (8) is provided inside the workbench (1) at the position corresponding to the outer side of the extrusion block (7). An extrusion rod (9) is threadedly connected inside the workbench (1).

2. The limiting device for PCBA circuit board production according to claim 1, characterized in that, The inclined block (6) has a limit strip (601) integrally formed on both the front and back sides.

3. The limiting device for PCBA circuit board production according to claim 1, characterized in that, The extrusion block (7) is symmetrically fixedly connected with a return spring (10) on the side near the extrusion rod (9), and the ends of the two return springs (10) away from the extrusion block (7) are fixedly connected to the inner wall of the workbench (1).

4. The limiting device for PCBA circuit board production according to claim 1, characterized in that, The circuit board base (4) is symmetrically and slidably installed with a limiting plate (11). The bottom of the limiting plate (11) near the circuit board mold (5) is in contact with the top of the circuit board mold (5). The end of the limiting plate (11) away from the circuit board mold (5) is integrally formed with a protrusion (1101).

5. The limiting device for PCBA circuit board production according to claim 1, characterized in that, A spring telescopic rod (12) is fixedly installed inside the circuit board base (4). A sleeve rod (13) is rotatably sleeved on the outer side of one end of the spring telescopic rod (12). A rectangular frame (14) is fixedly connected to the top of the sleeve rod (13).

6. The limiting device for PCBA circuit board production according to claim 5, characterized in that, The rectangular frame (14) is hollow inside and fits onto the outer surface of the protrusion (1101).

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