Automatic screw locking device for quick assembly of quick assembly PCBA (printed circuit board assembly) of automobile air quality sensor

Abstract

The utility model relates to an automatic screw locking device for quickly assembling a PCBA (printed circuit board assembly) of an automobile air quality sensor, which comprises a rack, a cross beam and an operating table, the PCBA on which screws are to be mounted is arranged on the operating table, a shell is arranged on the cross beam, an automatic screw locking component and an automatic screw arranging component are mounted in the shell, and the automatic screw locking component is connected with the operating table. Screws are arranged by the automatic screw arrangement assembly and then enter the automatic screw locking assembly, and the screws are mounted on the PCBA board through the automatic screw locking assembly; the automatic screw arranging assembly comprises a limiting groove, a mechanical pushing hand and a negative pressure suction pipe, wherein the limiting groove is formed in the horizontal direction and used for containing and conveying the screws, the mechanical pushing hand is arranged at the discharging port end of the limiting groove and used for pushing the screws to face the automatic screw locking assembly, and the negative pressure suction pipe is arranged at the discharging port end of the limiting groove and used for sucking the screws. Compared with the prior art, the screw can be kept in a stable state when being pushed to the rotating disc, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of product screw installation and fastening technology, and in particular to an automatic screw locking device for quick assembly of automotive air quality sensor PCBA boards. Background Technology

[0002] An automotive air quality sensor is a device used to monitor the air quality inside a vehicle. It can detect pollutants, harmful gases, and odors in the air, ensuring a safe and comfortable in-vehicle environment. The PCBA board provides an integrated platform for the automotive air quality sensor, integrating the sensor element, signal processing circuitry, and necessary interface circuitry. Therefore, the PCBA board assembly process requires the installation of numerous screws, which are currently installed manually, resulting in a significant workload. Furthermore, the existing screw installation method, using a screwdriver, makes it difficult to control the screw's turning force during manual installation, easily damaging the screws or failing to securely install them.

[0003] CN 116489888 A discloses an automatic screw locking device for air quality sensor PCBA boards. However, due to the different weights at both ends of the screws, when stacked, one end tends to collide with the other end, causing problems such as difficulty in unloading.

[0004] Automatic screw tightening devices in other fields are poorly targeted and complex to operate, resulting in a high proportion of rework and defective products. Summary of the Invention

[0005] The purpose of this utility model is to overcome the defects of the existing technology and provide an automatic screw locking device for quick assembly of automotive air quality sensor PCBA boards.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] The present invention provides an automatic screw-locking device for quick assembly of automotive air quality sensor PCBA boards. The device includes a frame, a crossbeam mounted on top of the frame, and an operating platform at the bottom. The PCBA board to be screwed is placed on the operating platform. A housing is mounted on the crossbeam. An automatic screw-locking assembly and an automatic screw-arranging assembly are installed within the housing. The automatic screw-arranging assembly arranges the screws before they enter the automatic screw-locking assembly, which then installs them onto the PCBA board.

[0008] The automatic screw arrangement assembly includes a limiting groove arranged horizontally to accommodate and transport the screw, a mechanical pusher located at the outlet end of the limiting groove to push the screw toward the automatic screw locking assembly, and a negative pressure suction tube located at the outlet end of the limiting groove to absorb the screw.

[0009] In some specific embodiments, the width of the limiting groove is smaller than the diameter of the screw head, so that the screw head protrudes from the limiting groove.

[0010] In some specific embodiments, the limiting groove is L-shaped or T-shaped, including a connected transport section and a discharge section. The two ends of the discharge section are connected, and the mechanical pusher and the negative pressure suction pipe are provided at one end.

[0011] In some specific embodiments, the automatic screw tightening assembly includes a motor, a screwdriver connected to the motor, a turntable located at another port of the unloading section, and a flexible guide cylinder located at the bottom of the turntable. The screwdriver is also inserted into the flexible guide cylinder to screw the screw at its bottom into the PCBA board below.

[0012] In some specific embodiments, the screwdriver tip is provided with a magnet for attracting the screw.

[0013] In some specific embodiments, the turntable is annular and has holes for the screw to slide from the turntable into the flexible guide cylinder. The screw slides down the flexible guide cylinder and gets stuck at the bottom.

[0014] In some specific embodiments, the flexible guide cylinder is a trapezoid that is wider at the top and narrower at the bottom, and the diameter of its bottom opening is smaller than the diameter of the screw head.

[0015] In some specific embodiments, the flexible guide cylinder is disposed inside the protective sleeve and fixed to the bottom of the turntable by the protective sleeve.

[0016] In some specific embodiments, the frame is fixed on the base, the base is slidably connected to the operating table, and the operating table carries the PCBA board for movement.

[0017] In some specific embodiments, the operating table is provided with screw holes.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) This invention achieves automatic continuous screw tightening by coupling the automatic screw tightening assembly with the screw arrangement structure, which greatly improves work efficiency.

[0020] (2) The present invention can improve the stability of screw arrangement: the screws are arranged in sequence in the horizontally set limiting groove, which avoids the tilting of the screws when stacked due to the inconsistency between the weight of the screw head and the rod, thus affecting the discharge. The screw head is pushed by a mechanical pusher. In order to avoid the screw tilting, the screw is also adsorbed by a negative pressure suction tube, so that the screw can maintain a stable state when it is pushed to the turntable.

[0021] (3) The present invention can improve the precise docking of screwdriver and screw: When the screw is pushed into the turntable, the flexible guide cylinder at the bottom of the turntable guides the screw to its bottom, and then the screw is squeezed through the flexible guide cylinder to the PCBA board by the screwdriver. The outer sheath provides secondary assistance for screw positioning. This method prevents the screw from falling off easily and makes the operation more precise and faster.

[0022] (4) The present invention has a simple structure, low cost and simple appearance. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 This is a schematic diagram of the structure during the operation of this utility model.

[0025] Figure 3 This is a top view of the automatic screw arrangement component of this utility model.

[0026] Figure 4 This is a top view of the automatic screw arrangement component of this utility model.

[0027] The diagram is labeled as follows:

[0028] 1 is the frame, 2 is the crossbeam, 3 is the operating table, 4 is the PCBA board, 5 is the housing, 6 is the screw, 7 is the limiting groove, 71 is the transport section, 72 is the unloading section, 8 is the mechanical pusher, 9 is the negative pressure suction tube, 10 is the motor, 11 is the screwdriver, 12 is the turntable, 13 is the flexible guide cylinder, 14 is the base, 15 is the protective sleeve, and 16 is the screw hole. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0032] In the following embodiments, unless otherwise specified, the functional components or structures are conventional components or structures used in the art to achieve the corresponding functions.

[0033] Example 1:

[0034] like Figures 1-4 As shown, an automatic screw-locking device for quick assembly of automotive air quality sensor PCBA boards is provided. It includes a frame 1, a crossbeam 2 mounted above it, and an operating platform 3 at the bottom. A PCBA board 4 with screws to be installed is placed on the operating platform 3. A housing 5 is mounted on the crossbeam 2. An automatic screw-locking assembly and an automatic screw-arranging assembly are installed inside the housing 5. The automatic screw-arranging assembly arranges the screws 6 and then they enter the automatic screw-locking assembly, where they are installed on the PCBA board 4. The automatic screw-arranging assembly includes a horizontally positioned limiting groove 7 for accommodating and conveying the screws 6, a mechanical pusher 8 located at the outlet end of the limiting groove 7 for pushing the screws 6 towards the automatic screw-locking assembly, and a negative pressure suction tube 9 located at the outlet end of the limiting groove 7 for adsorbing the screws 6.

[0035] This technical solution couples the automatic screw-tightening assembly with the screw arrangement structure to achieve automatic continuous screw-tightening, greatly improving work efficiency. Screws 6 are arranged sequentially in horizontally positioned limiting grooves 7. For example, the limiting groove 7 can be a vibrating groove. The groove vibrates to horizontally transport the screws 6, preventing tilting during stacking caused by the uneven weight distribution between the screw head and the rod, which would affect output. Furthermore, the mechanical pusher 8 and negative pressure suction pipe 9 maintain the stability of the screws 6 while pushing them, ensuring they remain stable when pushed onto the turntable.

[0036] More specifically, the width of the limiting groove 7 is smaller than the diameter of the screw head 6, so that the screw head 6 protrudes from the limiting groove 7. The limiting groove 7 is L-shaped or T-shaped, including a connected transport section 71 and an unloading section 72. The unloading section 72 is connected at both ends, and one end is equipped with the mechanical pusher 8 and the negative pressure suction tube 9. The screw 6 is transported from the transport section 71 to the unloading section 72, and the mechanical pusher 8 and the negative pressure suction tube 9 work together to push the screw 6 towards the automatic screw locking assembly.

[0037] The automatic screw tightening assembly includes a motor 10, a screwdriver 11 connected to the motor 10, a turntable 12 located at another end of the unloading section 71, and a flexible guide cylinder 13 located at the bottom of the turntable 12. The screwdriver 11 has a magnet at its end to attract the screw 6. The screwdriver 11 is also inserted into the flexible guide cylinder 13 to screw the screw 6 at its bottom onto the PCBA board 4 below. The turntable 12 is annular and has a hole for the screw 6 to slide from the turntable 12 into the flexible guide cylinder 13. The screw 6 slides down the flexible guide cylinder 13 and gets stuck at its bottom. However, because the flexible guide cylinder 13 is flexible, the screw 6 located at the bottom of the flexible guide cylinder 13 will be stuck at the bottom of the flexible guide cylinder 13 without external pressure. After the screwdriver 11 moves downward and magnetically attracts the head of the screw 6, it continues to move downward to force the screw 6 through the bottom of the flexible guide cylinder 13 and move it onto the PCBA board 4. The flexible guide cylinder 13 is trapezoidal, wider at the top and narrower at the bottom, and its bottom opening diameter is smaller than the head diameter of the screw 6. The flexible guide cylinder 13 is disposed inside the protective sleeve 15 and is fixed to the bottom of the turntable 12 by the protective sleeve 15.

[0038] The frame 1 is fixed on the base 14, and the base 14 is slidably connected to the operating table 3. The operating table 3 carries the PCBA board 4 and moves it. The operating table 3 is provided with screw holes 16, which facilitates the alignment of the screw holes 16 with the screw holes on the PCBA board 4, thus facilitating the accurate positioning of the screws 6.

[0039] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. An automatic screw-locking device for quick assembly of automotive air quality sensor PCBA boards, characterized in that, include: A frame (1), a crossbeam (2) above it, and an operating table (3) at the bottom are provided. A PCBA board (4) to be screwed is placed on the operating table (3). A housing (5) is provided on the crossbeam (2). An automatic screw locking assembly and an automatic screw arranging assembly are installed inside the housing (5). The automatic screw arranging assembly arranges the screws (6) and then they enter the automatic screw locking assembly. The automatic screw locking assembly installs the screws onto the PCBA board (4). The automatic screw arrangement assembly includes a limiting groove (7) arranged horizontally for accommodating and conveying the screw (6), a mechanical pusher (8) located at the outlet end of the limiting groove (7) for pushing the screw (6) toward the automatic screw locking assembly, and a negative pressure suction tube (9) located at the outlet end of the limiting groove (7) for adsorbing the screw (6).

2. The automatic screw locking device for quick assembly of automotive air quality sensor PCBA board according to claim 1, characterized in that, The groove width of the limiting groove (7) is smaller than the head diameter of the screw (6), so that the head of the screw (6) is exposed in the limiting groove (7).

3. The automatic screw-locking device for quick assembly of automotive air quality sensor PCBA board according to claim 1, characterized in that, The limiting groove (7) is L-shaped or T-shaped, including a connected transport section (71) and a discharge section (72). The two ends of the discharge section (72) are connected, and the mechanical pusher (8) and the negative pressure suction pipe (9) are provided at one end.

4. The automatic screw tightening device for quick assembly of automotive air quality sensor PCBA board according to claim 1, characterized in that, The automatic screw tightening assembly includes a motor (10), a screwdriver (11) connected to the motor (10), a turntable (12) located at the discharge end of the limiting groove (7), and a flexible guide cylinder (13) located at the bottom of the turntable (12). The screwdriver (11) is also inserted into the flexible guide cylinder (13) to screw the screw (6) at its bottom into the PCBA board (4) below.

5. The automatic screw tightening device for quick assembly of automotive air quality sensor PCBA board according to claim 4, characterized in that, The screwdriver (11) has a magnet at its end to attract the screw (6).

6. The automatic screw-locking device for quick assembly of automotive air quality sensor PCBA board according to claim 5, characterized in that, The turntable (12) is annular and has a hole for the screw (6) to slide from the turntable (12) into the flexible guide cylinder (13). The screw (6) slides down the flexible guide cylinder (13) and gets stuck at the bottom.

7. The automatic screw-locking device for quick assembly of automotive air quality sensor PCBA board according to claim 5, characterized in that, The flexible guide cylinder (13) is a trapezoid with a wider top and a narrower bottom, and the diameter of its bottom opening is smaller than the diameter of the screw head (6).

8. The automatic screw-locking device for quick assembly of automotive air quality sensor PCBA board according to claim 5, characterized in that, The flexible guide cylinder (13) is disposed inside the protective sleeve (15) and is fixed to the bottom of the turntable (12) by the protective sleeve (15).

9. The automatic screw-locking device for quick assembly of automotive air quality sensor PCBA board according to claim 1, characterized in that, The frame (1) is fixed on the base (14), the base (14) is slidably connected to the operating table (3), and the operating table (3) carries the PCBA board (4) to move.

10. The automatic screw-locking device for quick assembly of automotive air quality sensor PCBA board according to claim 1, characterized in that, The operating table (3) is provided with screw holes (16).

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