Automatic screw locking device

Abstract

The utility model belongs to the technical field of circuit board processing, especially automatic screw locking equipment, including the body, the workbench is equipped below the body, two groups Z axle guide rails are installed on the workbench, the sliding end of Z axle guide rail is fixed with the material table, at least one positioning seat for strengthening block, circuit board is placed simultaneously is fixed on every material table, the rotary clamping pneumatic cylinder is still fixed on the material table, the rotary clamping pneumatic cylinder output end is installed with the clamping plate through the chuck for strengthening block, circuit board is pressed on the positioning seat, the utility model discloses through the cooperation between positioning seat and clamping plate, then under the rotary clamping pneumatic cylinder effect can realize the quick clamping of strengthening block and circuit board, make its two people keep in stable state and then lock the screw, has the advantages such as convenient operation, high efficiency, stable and reliable.

Description

Technical Field

[0001] This utility model belongs to the field of circuit board processing technology, specifically relating to an automatic screw fastening device. Background Technology

[0002] Circuit board manufacturing is the process of turning a circuit design into a physical object through a series of precision processes (such as pattern transfer, etching, drilling, electroplating, etc.). It involves creating fine wires and connecting holes on a copper-clad board, covering it with a protective layer, and finally creating a circuit board that can accommodate components and achieve electrical connections.

[0003] In the final stage of circuit board processing, screwing is a key step in mechanical assembly. One of the steps is to fix the reinforcing block to the circuit board by bolts. The existing method is to precisely align the mounting holes of the reinforcing block with the corresponding through holes on the circuit board, and use a special bit to screw in the screw so that the screw passes through the circuit board and screws into the metal part. However, manual operation is inefficient and cannot guarantee the consistency of the assembled product.

[0004] To address the aforementioned issues, this application proposes an automatic screw fastening device. Utility Model Content

[0005] To address the aforementioned problems in the prior art, this utility model provides an automatic screw fastening device, resolving the issues raised in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic screw fastening device, comprising a main body, a worktable below the main body, two sets of Z-axis guide rails mounted on the worktable, a material platform fixed to the sliding end of the Z-axis guide rails, at least one positioning seat fixed on each material platform for simultaneously placing a reinforcing block and a circuit board, and a rotary clamping cylinder fixed on the material platform, the output end of the rotary clamping cylinder being fitted with a clamping plate via a chuck for pressing the reinforcing block and circuit board on the positioning seat; The upper part of the workbench is fixed with an upper frame, and a dual-axis guide rail is installed in the upper frame. The distance between the two sets of Z-axis guide rails is within the travel range of the dual-axis guide rail. A screw-tightening mechanism is installed on the dual-axis guide rail for tightening the screws between the reinforcing block and the circuit board.

[0007] As a preferred technical solution of this utility model, the positioning seat is provided with a second positioning groove for accommodating the reinforcing block, and the positioning seat is also provided with a first positioning groove for accommodating the circuit board.

[0008] As a preferred technical solution of this utility model, the clamping plate is provided with a through hole coaxial with the reinforcing block and the screw hole of the circuit board.

[0009] As a preferred embodiment of this utility model, a safety light curtain is installed on the upper frame, and the Z-axis guide rail drives the material table to slide inside and outside the upper frame, with the safety light curtain located on the sliding path.

[0010] As a preferred embodiment of this utility model, a sensor is fixedly installed on the worktable, and the sensor is located directly below the path through which the Z-axis guide rail drives the material table to move.

[0011] As a preferred embodiment of this utility model, an operation panel is installed on the workbench.

[0012] As a preferred technical solution of this utility model, a screw-tightening mechanism is fixed on the dual-axis guide rail. The screw-tightening mechanism includes an adapter plate fixed to the dual-axis guide rail, and a screw-feeding mechanism and a screw-tightening mechanism are installed on the adapter plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model achieves rapid clamping of the reinforcing block and circuit board by cooperating between the positioning seat and the clamping plate, and then by the action of the rotary clamping cylinder, so that the two are kept in a stable state before the screws are locked. It has the advantages of convenient operation, high efficiency, stability and reliability. This invention uses a Z-axis guide rail and a dual-axis guide rail to form a three-dimensional motion space, enabling the screw-tightening mechanism to automatically lock the screws on the reinforcing block and circuit board, thereby achieving the purpose of automated screw-tightening. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the present invention from the front view. Figure 3 This is a structural diagram showing a partial disassembly of the material platform and its upper connecting parts. In the diagram: 1. Main body; 11. Worktable; 12. Upper frame; 13. Safety light curtain; 14. Operation panel; 15. Sensor; 2. Z-axis guide rail; 3. Material table; 31. Positioning seat; 311. Positioning slot 1; 312. Positioning slot 2; 32. Rotary clamping cylinder; 321. Chuck; 322. Clamping plate; 3221. Through hole; 4. Dual-axis guide rail; 5. Screw tightening mechanism; 51. Adapter plate; 52. Screw feeding mechanism; 53. Tightening mechanism; 6. Reinforcing block; 7. Circuit board. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0016] Please see Figure 1 - Figure 3 The present invention provides the following technical solution: an automatic screw fastening device, comprising a body 1, a worktable 11 below the body 1, two sets of Z-axis guide rails 2 are installed on the worktable 11, a material table 3 is fixed to the sliding end of the Z-axis guide rail 2, and at least one positioning seat 31 is fixed on each material table 3 for placing the reinforcing block 6 and the circuit board 7 at the same time. A rotary clamping cylinder 32 is also fixed on the material table 3. The output end of the rotary clamping cylinder 32 is fitted with a clamping plate 322 through a chuck 321 for pressing the reinforcing block 6 and the circuit board 7 on the positioning seat 31. An upper frame 12 is fixed on the upper end of the worktable 11. A dual-axis guide rail 4 is installed in the upper frame 12. The distance between the two sets of Z-axis guide rails 2 is within the stroke range of the dual-axis guide rail 4. A screw tightening mechanism 5 is installed on the dual-axis guide rail 4 for locking the screws between the reinforcing block 6 and the circuit board 7.

[0017] Furthermore, the positioning base 31 is provided with a second positioning groove 312 for accommodating the reinforcing block 6, and the positioning base 31 is also provided with a first positioning groove 311 for accommodating the circuit board 7. In this embodiment, the length of the reinforcing block 6 is less than that of the circuit board 7, so a second positioning groove 312 is provided that is lower than the first positioning groove 311. As a result, after the reinforcing block 6 and the circuit board 7 are stacked, a flat plane is formed at the top, which facilitates the clamping of the clamping plate 322.

[0018] Furthermore, the clamping plate 322 has a through hole 3221 that is coaxial with the screw holes of the reinforcing block 6 and the circuit board 7. The through hole 3221 is wider at the top and narrower at the bottom, so that the screws can be accurately and quickly aligned with the reinforcing block 6 and the circuit board 7.

[0019] Furthermore, to enhance the safe handling of block 6 and circuit board 7 on positioning seat 31, a safety light curtain 13 is installed on the upper frame 12. The Z-axis guide rail 2 drives the material table 3 to slide inside and outside the upper frame 12, and the safety light curtain 13 is located on the sliding path. A sensor 15 is fixedly installed on the worktable 11, and the sensor 15 is located directly below the path through which the Z-axis guide rail 2 drives the material table 3 to move. In this embodiment, the sensor 15 is used for positioning of positioning seat 31, and the safety light curtain 13 is used for personnel protection.

[0020] Furthermore, an operation panel 14 is installed on the workbench 11. The operation panel 14 is used to control the start, stop, and emergency stop of the main body 1, as well as the operation of the material table 3, the dual-axis guide rail 4, and the screw tightening mechanism 5. At the same time, a main controller is configured inside the workbench 11 for the mutual coordination between the electrical control components.

[0021] Furthermore, a screw-tightening mechanism 5 is fixed on the dual-axis guide rail 4. The screw-tightening mechanism 5 includes an adapter plate 51 fixed to the dual-axis guide rail 4. A screw-feeding mechanism 52 and a screw-tightening mechanism 53 are installed on the adapter plate 51. Specifically, the screw-tightening mechanism 53 has a motor and a flexible pushing mechanism. The motor is used to drive the screw screw. The flexible pushing mechanism adopts the form of electric push rod + bit + spring. The bit and electric push rod are connected by an axially telescopic structure, but the two rotate synchronously. For example, a telescopic groove and telescopic rod in the shape of a straight line (cross, triangle, rectangle, polygon). The electric push rod pushes the spring, and then the spring pushes the bit with a flexible force. The bit and screw rotate through the cooperation of the motor, thereby achieving the purpose of flexible screw-tightening.

[0022] The working principle and usage process of this utility model: The Z-axis guide rail 2 moves the material table 3 to the outside of the safety light curtain 13. The worker wearing finger cots places the reinforcing block 6 and the circuit board 7 into the chuck 321 and the first positioning slot 311 respectively. After placement, the worker manually confirms whether the placement is in place. After confirmation, the worker starts the rotary clamping cylinder 32 by operating the button on the operation panel 14. The rotary clamping cylinder 32 drives the chuck 321 and the clamping plate 322 to rotate and press the reinforcing block 6 and the circuit board 7 together. Z-axis guide rail 2 moves reinforcing block 6 and circuit board 7 into the working range of screw tightening mechanism 5. Driven by dual-axis guide rail 4, screw tightening mechanism 5 moves to directly above circuit board 7. Dual-axis guide rail 4 drives screw tightening mechanism 5 to move down. Screw feeding mechanism 52 aligns with through hole 3221 and feeds a screw. At this time, tightening mechanism 53 drives the front bit to rotate and move down, screwing the screw into reinforcing block 6 and circuit board 7 to form a lock. With the cooperation of Z-axis guide rail 2 and dual-axis guide rail 4, all screws are locked in sequence. Z-axis guide rail 2 sends circuit board 7 outward. Rotary clamping cylinder 32 opens clamping plate 322, and the assembled product can be taken out. It should be noted that the Z-axis guide rail 2 is provided with two sets, which drive two sets of positioning seats 31 to cooperate. During the loading and unloading process, one set of positioning seats 31 cooperates with the screw tightening mechanism 5 to perform screw tightening operations, ensuring work efficiency.

[0023] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic screw fastening device, comprising a body (1), wherein a worktable (11) is provided below the body (1), characterized in that: Two sets of Z-axis guide rails (2) are installed on the worktable (11). A material table (3) is fixed to the sliding end of the Z-axis guide rail (2). At least one positioning seat (31) is fixed on each material table (3) for placing the reinforcing block (6) and the circuit board (7) at the same time. A rotary clamping cylinder (32) is also fixed on the material table (3). A clamping plate (322) is installed on the output end of the rotary clamping cylinder (32) through the chuck (321) for pressing the reinforcing block (6) and the circuit board (7) on the positioning seat (31). The upper end of the workbench (11) is fixed with an upper frame (12), and a dual-axis guide rail (4) is installed in the upper frame (12). The distance between the two sets of Z-axis guide rails (2) is within the travel range of the dual-axis guide rail (4). A screw-tightening mechanism (5) is installed on the dual-axis guide rail (4) for locking the screws between the reinforcing block (6) and the circuit board (7).

2. The automatic screw fastening device according to claim 1, characterized in that: The positioning seat (31) is provided with a second positioning groove (312) for accommodating the reinforcing block (6), and the positioning seat (31) is also provided with a first positioning groove (311) for accommodating the circuit board (7).

3. The automatic screw fastening device according to claim 2, characterized in that: The clamping plate (322) has a through hole (3221) that is coaxial with the screw holes of the reinforcing block (6) and the circuit board (7).

4. The automatic screw fastening device according to claim 1, characterized in that: A safety light curtain (13) is installed on the upper frame (12). The Z-axis guide rail (2) drives the material table (3) to slide inside and outside the upper frame (12). The safety light curtain (13) is located on the sliding path.

5. The automatic screw fastening device according to claim 4, characterized in that: A sensor (15) is fixedly installed on the worktable (11), and the sensor (15) is located directly below the path through which the Z-axis guide rail (2) drives the material table (3) to move.

6. The automatic screw fastening device according to claim 1, characterized in that: An operation panel (14) is installed on the workbench (11).

7. The automatic screw fastening device according to claim 1, characterized in that: A screw-tightening mechanism (5) is fixed on the dual-axis guide rail (4). The screw-tightening mechanism (5) includes an adapter plate (51) fixed to the dual-axis guide rail (4). A screw-feeding mechanism (52) and a screw-tightening mechanism (53) are installed on the adapter plate (51).

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