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

Abstract

The invention relates to an automatic screw locking device for rapid assembly of an automobile air quality sensor rapid assembly PCBA (Printed Circuit Board Assembly) board, which comprises a rack, a cross beam and an operation table, the PCBA board on which screws are to be mounted is arranged on the operation table, a shell is arranged on the cross beam, an automatic screw locking assembly and an automatic screw arrangement assembly are mounted in the shell, and the automatic screw locking assembly and the automatic screw arrangement assembly are arranged on the rack. 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, a 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] The invention relates to the technical field of product screw installation and fastening, and in particular to an automatic screw locking device for quick assembly of a PCBA board of an automobile air quality sensor. Background Art

[0002] The automotive air quality sensor is a device used to monitor the air quality inside the vehicle. It can detect pollutants, harmful gases and odors in the air to ensure the safety and comfort of the air environment inside the vehicle. The PCBA board provides an integrated platform for the automotive air quality sensor, integrating sensor elements, signal processing circuits and necessary interface circuits. Therefore, during the assembly process of the PCBA board, many screws need to be installed. The existing screw installation method is manual installation, which is very labor-intensive. In addition, the existing screw installation is to install the screws by screwdriver. It is not easy to grasp the force of the screwdriver's rotation during manual installation, which can easily cause damage to the screws or fail to install the screws firmly.

[0003] CN 116489888 A discloses an automatic screw locking device for an air quality sensor PCBA board. However, due to the different weights at both ends of the screw, when stacking, one end easily abuts against the other end, causing problems such as difficulty in unloading.

[0004] Automatic screw locking devices in other fields have poor targeting and are complicated to operate, resulting in a high proportion of rework and defective products. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide an automatic screw locking device for quick assembly of PCBA board of automobile air quality sensor.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] The technical solution of the present invention is to provide an automatic screw locking device for rapid assembly of a PCBA board for an automobile air quality sensor, comprising: a frame, a crossbeam arranged above the frame and an operating table arranged at the bottom, the PCBA board to be installed with screws is placed on the operating table, a shell is arranged on the crossbeam, an automatic screw locking component and an automatic screw arrangement component are installed in the shell, the automatic screw arrangement component arranges the screws and then enters the automatic screw locking component, and is installed on the PCBA board through the automatic screw locking component,

[0008] Among them, the automatic screw arrangement assembly includes a limiting groove arranged in the horizontal direction and used to accommodate and convey the screws, a mechanical pusher arranged at the outlet end of the limiting groove and used to push the screws toward the automatic screw locking assembly, and a negative pressure suction pipe arranged at the outlet end of the limiting groove and used to adsorb the screws.

[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 is exposed 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 unloading section, the unloading section is connected at both ends, and the mechanical pusher and the negative pressure suction pipe are provided at one end.

[0011] In some specific embodiments, the automatic screw locking assembly includes a motor, a screwdriver connected to the motor, a turntable provided at another port of the unloading section, and a flexible guide cylinder provided at the bottom of the turntable. The screwdriver is also inserted into the flexible guide cylinder to screw the screw at the bottom thereof 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 in a ring shape and is provided with a hole for allowing the screw to slide from the turntable into the flexible guide tube. The screw slides down along the flexible guide tube and is stuck at the bottom.

[0014] In some specific embodiments, the flexible guide tube is a trapezoid that is wide at the top and narrow at the bottom, and the diameter of the bottom opening is smaller than the diameter of the screw head.

[0015] In some specific embodiments, the flexible guide tube is disposed in a sheath and is fixed to the bottom of the turntable through the sheath.

[0016] In some specific implementations, the frame is fixed on a base, the base is slidably connected to the operating table, and the operating table carries the PCBA board to move.

[0017] In some specific embodiments, screw holes are provided on the operating table.

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

[0019] (1) The present invention achieves automatic and continuous screw tightening by coupling the automatic screw tightening assembly with the screw arrangement structure, thereby greatly improving work efficiency.

[0020] (2) The present invention can improve the stability of the screw arrangement: the screws are arranged in sequence in horizontally arranged limit grooves, which avoids the screws from tilting when stacked due to the inconsistency in weight between the screw head and the rod, thereby affecting the discharge of the material. The screw head is pushed by a mechanical pusher. In order to avoid the screw from tilting, the screw is adsorbed by a negative pressure straw, so that the screw can remain in a stable state when it is pushed to the turntable.

[0021] (3) The present invention can improve the precision of the connection between the screwdriver and the screw: when the screw is pushed into the turntable, the flexible guide tube at the bottom of the turntable guides the screw to its bottom, and then the screw is squeezed through the flexible guide tube to the PCBA board by the screwdriver. The outer sheath plays a secondary assisting function in the positioning of the screw. This method prevents the screw from falling off easily, making the operation more precise and quick.

[0022] (4) The present invention has a simple structure, low cost and a simple appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is a structural schematic diagram of the operation process of the present invention.

[0025] Figure 3 It is a schematic diagram of the top structure of the automatic screw arrangement assembly of the present invention.

[0026] Figure 4 It is a top view structural schematic diagram of the automatic screw arrangement assembly operation of the present invention.

[0027] The following are marked in the figure:

[0028] 1 is a frame, 2 is a crossbeam, 3 is an operating table, 4 is a PCBA board, 5 is a shell, 6 is a screw, 7 is a limit slot, 71 is a transport section, 72 is a discharge section, 8 is a mechanical pusher, 9 is a negative pressure straw, 10 is a motor, 11 is a screwdriver, 12 is a turntable, 13 is a flexible guide cylinder, 14 is a base, 15 is a sheath, and 16 is a screw hole. DETAILED DESCRIPTION

[0029] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

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

[0033] Embodiment 1:

[0034] like Figures 1 to 4 As shown, an automatic screw locking device for quick assembly of PCBA board of automobile air quality sensor comprises: a frame 1, a crossbeam 2 arranged above it and an operating table 3 arranged at the bottom thereof, a PCBA board 4 to be installed with screws is placed on the operating table 3, a shell 5 is arranged on the crossbeam 2, an automatic screw locking assembly and a screw automatic arrangement assembly are installed in the shell 5, the screw automatic arrangement assembly arranges the screws 6 into the automatic screw locking assembly, and is installed on the PCBA board 4 through the automatic screw locking assembly. Among them, the automatic screw arrangement assembly comprises a limit groove 7 arranged in the horizontal direction and used to accommodate and transport the screws 6, a mechanical pusher 8 arranged at the discharge port end of the limit groove 7 and used to push the screws 6 toward the automatic screw locking assembly, and a negative pressure suction pipe 9 arranged at the discharge port end of the limit groove 7 and used to adsorb the screws 6.

[0035] This technical solution achieves automatic continuous screw tightening by coupling the automatic screw tightening assembly with the screw arrangement structure, greatly improving work efficiency. The screws 6 are arranged in sequence in the horizontally arranged limit slots 7. For example, the limit slots 7 can be vibration slots. The screws 6 are transported horizontally by the vibration of the slot body, which avoids the inclination of the screws when stacked due to the inconsistency of the weight of the head of the screw 6 and the rod, thereby affecting the discharge. The mechanical pusher 8 and the negative pressure straw 9 maintain the stability of the screw 6 while pushing the screw 6, so that the screw 6 can remain stable when it is pushed to the turntable.

[0036] More specifically, the slot width of the limiting slot 7 is smaller than the diameter of the head of the screw 6, so that the head of the screw 6 is exposed from the limiting slot 7. The limiting slot 7 is L-shaped or T-shaped, and includes a connected transport section 71 and a discharge section 72. The two ends of the discharge section 71 are connected, and one end is provided with the mechanical pusher 8 and the negative pressure suction pipe 9. The screw 6 is transported from the transport section 71 to the discharge section 72, and the mechanical pusher 8 and the negative pressure suction pipe 9 cooperate to push the screw 6 toward the automatic screw locking assembly.

[0037] The automatic screw locking assembly includes a motor 10, a screwdriver 11 connected to the motor 10, a turntable 12 provided at another port of the discharge section 71, and a flexible guide cylinder 13 provided at the bottom of the turntable 12. The end of the screwdriver 11 is provided with a magnet for attracting the screw 6. 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. The turntable 12 is annular and is provided with a hole for allowing the screw 6 to slide from the turntable 12 into the flexible guide cylinder 13. The screw 6 slides down along the flexible guide cylinder 13 and is stuck at its bottom. However, since the flexible guide cylinder 13 is flexible, the screw 6 at the bottom of the flexible guide cylinder 13 will be stuck at the bottom of the flexible guide cylinder 13 without external force extrusion. After the screwdriver 11 moves downward to be magnetically attracted to the head of the screw 6, it continues to move downward to squeeze the screw 6 through the bottom of the flexible guide cylinder 13 and move to the PCBA board 4. The flexible guide tube 13 is a trapezoidal shape with a wide top and a narrow bottom, and its bottom opening diameter is smaller than the head diameter of the screw 6. The flexible guide tube 13 is arranged in a sheath 15 and is fixed to the bottom of the rotating disk 12 through the sheath 15.

[0038] The frame 1 is fixed on a base 14, and the base 14 is slidably connected to the operating table 3, and the operating table 3 moves with the PCBA board 4. The operating table 3 is provided with a screw hole 16, which is convenient for the screw hole 16 to correspond to the screw hole on the PCBA board 4, so as to facilitate the accurate positioning of the screw 6.

[0039] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. An automatic screw locking device for rapid assembly of PCBA board for automobile air quality sensor, characterized in that: include: A frame (1), a crossbeam (2) arranged above the frame and an operating table (3) arranged at the bottom, a PCBA board (4) to be installed with screws is placed on the operating table (3), a shell (5) is arranged on the crossbeam (2), an automatic screw locking component and an automatic screw arrangement component are installed in the shell (5), the automatic screw arrangement component arranges the screws (6) and then enters the automatic screw locking component, and is installed on the PCBA board (4) through the automatic screw locking component, The automatic screw arrangement assembly comprises a limit groove (7) arranged in a horizontal direction and used to accommodate and transport the screw (6), a mechanical pusher (8) arranged at the outlet end of the limit groove (7) and used to push the screw (6) toward the automatic screw locking assembly, and a negative pressure suction pipe (9) arranged at the outlet end of the limit groove (7) and used to adsorb the screw (6).

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

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

4. The automatic screw locking device for rapid assembly of PCBA board of automobile air quality sensor according to claim 1 is characterized in that: The automatic screw locking assembly comprises a motor (10), a screwdriver (11) connected to the motor (10), a turntable (12) arranged at the outlet end of the limiting groove (7), and a flexible guide cylinder (13) arranged 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 the bottom thereof onto the PCBA board (4) below.

5. The automatic screw locking device for rapid assembly of PCBA board of automobile air quality sensor according to claim 4 is characterized in that: The end of the screwdriver (11) is provided with a magnet for attracting the screw (6).

6. The automatic screw locking device for rapid assembly of PCBA board of automobile air quality sensor according to claim 5 is characterized in that: The rotating disk (12) is in the shape of a ring and is provided with a hole for allowing the screw (6) to slide from the rotating disk (12) into the flexible guide tube (13). The screw (6) slides down along the flexible guide tube (13) and is stuck at the bottom.

7. The automatic screw locking device for rapid assembly of PCBA board of automobile air quality sensor according to claim 5 is characterized in that: The flexible guide tube (13) is in the shape of 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 head of the screw (6).

8. The automatic screw locking device for rapid assembly of PCBA board of automobile air quality sensor according to claim 5 is characterized in that: The flexible guide cylinder (13) is arranged in a protective sleeve (15) and is fixed to the bottom of the rotating disk (12) through the protective sleeve (15).

9. The automatic screw locking device for rapid assembly of PCBA board of automobile air quality sensor according to claim 1 is characterized in that: The frame (1) is fixed on a 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 rapid assembly of PCBA board of automobile air quality sensor according to claim 1, characterized in that: The operating table (3) is provided with screw holes (16).

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