Automatic screw locking equipment for case shell

Abstract

The utility model discloses automatic screw locking equipment for a case shell, and relates to screw tightening equipment applied to case shells of sound power amplifiers and the like. Comprising a cabinet 1, power amplifier case mounting and positioning platforms 11-25, a seven-axis cooperative robot 6, quick-change locking modules 4 and 5, 2D camera modules 28 and 29, an electric intelligent tightening gun 30 and feeders 35 and 36. According to the utility model, automatic screw tightening and automatic screw supply operations are carried out on power amplifier cases of different models, so that the working efficiency is greatly improved, the positioning precision is improved, and the labor use cost is reduced; the electric intelligent tightening tool is adopted, and the tightening quality is improved.

Description

Technical Field

[0001] This utility model relates to an automatic screw fastening device, specifically an automatic screw fastening device for chassis shells. Background Technology

[0002] As people's demand for daily entertainment continues to increase, high-power home theater amplifiers have gradually moved from cinemas into ordinary households, which in turn requires large-scale production and assembly.

[0003] The mechanical casings or chassis of these amplifiers require screw tightening. However, currently, most of these are done manually with hand-held screw tightening guns, one screw at a time. This method is inefficient and prone to defects such as uneven screwing and misalignment. For example, Chinese utility model patent CN109048752A discloses "an automatic screw-tightening machine for computer chassis with self-correcting capability." While this device solves the problem of misalignment between screw holes and mounting holes after component misalignment, it still requires manual adjustment, screw placement, and tightening one screw at a time, thus not improving production efficiency.

[0004] Current automated assembly systems for computer chassis, such as the Chinese invention patent CN106826206A (publication number CN106826206A), disclose a "chassis screw-tightening mechanism and chassis assembly system." This system uses modules such as a conveying device, a screw-tightening device, and a lifting platform to automatically tighten screws on the chassis. However, it primarily focuses on the automated conveying and positioning of the chassis, without detailing the automatic screw-tightening process and its implementation. The screw-tightening device mentioned in the patent mainly consists of two screwdrivers. These two screwdrivers maintain central symmetry under the left-right drive of a central rotating wheel and accurately adjust to the preset mounting hole positions on the chassis. However, the preset points are limited, and the mounting holes must be arranged centrally symmetrically. Therefore, a single screw-tightening device can only tighten screws on fixed mounting holes. When the chassis is redesigned and the hole positions are changed, the entire screw-tightening device needs to be replaced or all points and fixing fixtures need to be readjusted. This device cannot automatically recognize different chassis mounting hole positions, making chassis redesign complex.

[0005] Chinese utility model patent with announcement number CN216912869U discloses "a screw remover for removing computer cases". The machine fixes the case on two symmetrically arranged sliding platforms that can move back and forth. The screw remover is mounted on a 2-axis module, which can move the screw remover left and right and up and down. Therefore, the screw remover can cover all positions on the surface of the case. However, the mounting holes still need to be set in advance and cannot be automatically recognized. Utility Model Content

[0006] To address the screw tightening issue on different mounting surfaces of a chassis, this invention proposes an automatic screw tightening device for chassis shells. The device includes a cabinet, a tightening gun, and a seven-axis collaborative robot, quick-change tightening module one and quick-change tightening module two, feeder one and feeder two, and a power amplifier chassis mounting and positioning platform mounted on the large mounting plate. The end effector of the seven-axis collaborative robot is equipped with a quick-change fixture plate, a 2D camera, and a camera light source. The quick-change fixture plate can connect to the quick-change fixtures on quick-change tightening module one or quick-change tightening module two, allowing the end effector of the seven-axis collaborative robot to carry two different tightening modules to tighten screws in mounting holes of different sizes.

[0007] Furthermore, quick-change lock assembly module one and quick-change lock assembly module two are equipped with an electric intelligent tightening gun, a cylinder, and a nail suction nozzle or a nail blowing nozzle. The cylinder drives the electric intelligent tightening gun to move up and down, the nail suction nozzle picks up small screws from the nail outlet of feeder one, and feeder two blows large screws into the nail blowing nozzle through the nail blowing tube.

[0008] Furthermore, the power amplifier chassis mounting and positioning platform is equipped with a rodless cylinder, guide rail slider one and guide rail slider two, power amplifier chassis mounting plate, power amplifier chassis front positioning block 1, front positioning block 2, left positioning block, right positioning block, rear positioning block, and positioning block butterfly nuts. The rodless cylinder pushes the power amplifier mounting plate to move between the installation position and the locking position. The six adjustable positioning blocks position the power amplifier chassis. When it is necessary to adjust the chassis position or replace it with a different model chassis, the position of the positioning blocks can be quickly adjusted by loosening the butterfly nuts.

[0009] Compared with the prior art, this application has at least the following beneficial effects:

[0010] This application employs a collaborative robot with an intelligent electric tightening gun at its end effector. The collaborative robot can deliver the tightening gun to the mounting holes on different mounting surfaces of the chassis to complete the tightening of all screws.

[0011] To address the positioning issue of mounting holes for different chassis models, the device proposed in this invention is equipped with a high-precision 2D camera at the end of the collaborative robot. The 2D camera locates the position of each mounting hole by taking pictures, and then controls the tightening gun to move to each hole for fastening.

[0012] To solve the positioning problem of different models of chassis, the device proposed in this utility model adopts a chassis-compatible fixture, which can achieve rapid positioning and switching of chassis of different sizes by adjusting the position of the fixture.

[0013] To solve the problem of screw feeding and tightening for mounting holes of different sizes on the chassis, the device proposed in this utility model is equipped with multiple sets of intelligent tightening gun quick-change systems. The collaborative robot completes the tightening of screws of different sizes by switching between different intelligent tightening guns. At the same time, multiple screw feeders are installed on the device to feed screws to different tightening guns. 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 examples of the present invention to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram (front view) of the present invention.

[0016] Figure 2 This is a schematic diagram (top view) of the present invention.

[0017] Figure 3 Install a positioning platform for the chassis;

[0018] Figure 4 For quick lock replacement modules;

[0019] Figure 5 For collaborative robot end effector components.

[0020] In the diagram: 1. Equipment cabinet; 2. Foot; 3. Equipment mounting plate; 4. Quick-locking module one; 5. Quick-locking module two; 6. Collaborative robot with a 5KG load capacity; 7. Robot quick-change fixture plate; 8. Chassis mounting and positioning platform base; 9. Collaborative robot base; 10. Chassis mounting and positioning platform plate; 11. Power amplifier chassis; 12. Power amplifier chassis mounting plate; 13. Rodless cylinder; 14. Guide rail slider one; 15. Guide rail slider two; 16. Power amplifier chassis mounting plate buffer one; 17. Power amplifier chassis mounting plate buffer two; 18. Power amplifier chassis mounting plate. 19. Power amplifier chassis mounting plate baffle 2; 20. Power amplifier chassis front positioning block 1; 21. Power amplifier chassis front positioning block 2; 22. Power amplifier chassis left positioning block; 23. Power amplifier chassis right positioning block; 24. Power amplifier chassis rear positioning block; 25. Power amplifier chassis positioning block butterfly nut; 26. Robot side quick-change plate; 27. Quick-change fixture; 28. 2D camera; 29. ​​Camera light source; 30. Electric intelligent tightening gun; 31. Locking module cylinder; 32. Nail suction nozzle; 33. Nail blowing nozzle; 34. Nail blowing tube; 35. Feeder 1; 36. Feeder 2. Detailed Implementation

[0021] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0022] like Figure 1 and Figure 2 As shown, this utility model discloses an automatic screw-locking device for chassis shells, comprising an equipment cabinet 1, a power amplifier chassis mounting and positioning platform 11-25, a collaborative robot 6 with a load capacity of 5KG, quick-change screw attachment module one 4 and quick-change screw attachment module two 5, a collaborative robot end effector, a 2D camera 28, a camera light source 29, an electric intelligent tightening gun 30, and feeders one 35 and two 36. The power amplifier chassis mounting and positioning platform is mounted on the equipment mounting plate 3 of the cabinet; the collaborative robot with a load capacity of 5KG is mounted on the base 9; quick-change screw attachment module one 4 and quick-change screw attachment module two 5 are mounted on the equipment mounting plate 3; the robot end effector and the 2D camera module are mounted on the collaborative robot 6; the electric intelligent tightening gun 30 is mounted on quick-change screw attachment module one 4 and quick-change screw attachment module two 5; and feeders one 35 and two 36 are mounted on the equipment mounting plate 3.

[0023] To facilitate the installation of power amplifier chassis 11 of different models and sizes, multiple adjustable positioning blocks are provided on the power amplifier chassis mounting plate 12, including front positioning block 1 20, front positioning block 21, left positioning block 22, right positioning block 23, and rear positioning block 24. When it is necessary to adjust the positioning blocks, manually loosen the butterfly nut 25 and then manually adjust the position of the positioning blocks to better position the power amplifier chassis 11.

[0024] To enable the amplifier chassis 11 to move automatically between the installation position and the locking position, a long-stroke rodless cylinder 13, a guide rail slider 14, and a guide rail slider 2 15 are installed below the amplifier chassis mounting plate 12. After the amplifier chassis 11 is installed, the rodless cylinder 13 pushes the amplifier chassis mounting plate 12 until the amplifier chassis mounting plate baffle 18 and the amplifier chassis mounting plate baffle 2 19 contact the amplifier chassis mounting plate buffer 16 and the amplifier chassis mounting plate buffer 2 17.

[0025] To enable screw tightening on multiple surfaces of the power amplifier chassis, this equipment uses a seven-axis collaborative robot 6 with a load capacity of 5KG. The robot can bring the end load to the front, top, and side surfaces of the power amplifier chassis 11 to achieve the positioning of the mounting holes and screw tightening.

[0026] To enable tightening of screws in mounting holes of different sizes on the power amplifier chassis, quick-change fastening modules 1 and 2 are installed on the equipment mounting plate 3. Each module is equipped with an electric intelligent tightening gun 30, a cylinder 31, and either a screw-suction nozzle 32 or a screw-blowing nozzle 33. The cylinder 31 drives the electric intelligent tightening gun 30 to move up and down, the screw-suction nozzle 32 picks up small screws from the screw outlet of feeder 1 35, and feeder 2 36 blows large screws into the screw-blowing nozzle 33 through the blow-blowing tube 34. Quick-change fastening module 1 is used for tightening large screws, and quick-change fastening module 2 is used for tightening small screws. Each quick-change fastening module is equipped with a quick-change fixture 27, which can be quickly connected to the quick-change fixture plate 7 at the end of the robot. Therefore, the collaborative robot can quickly switch between different fastening modules as needed.

[0027] In order to locate and identify the mounting holes on different surfaces of the power amplifier chassis, a 2D camera 28 is set at the end of the collaborative robot 6. The camera can take pictures of the surface of the power amplifier chassis and then transmit the pictures to the control system for judgment.

[0028] To supply screws of different types to the power amplifier chassis, two sets of feeders, 35 and 36, are installed on the main mounting plate 3 of the equipment, each storing two different types of screws. When the robot needs to pick up or blow up a specific type of screw, it moves the screw-picking nozzle 32 or the screw-blowing nozzle 33 on the fastening module to the feeder's feeding port to obtain the screw.

Claims

1. An automatic screw-locking device for a chassis shell, comprising a machine cabinet (1) and a screw-locking gun (30), characterized in that, The equipment mounting plate (3) is equipped with a seven-axis collaborative robot (6), quick-change locking module one (4) and quick-change locking module two (5), feeder one (35) and feeder two (36), and a power amplifier chassis mounting and positioning platform; the end of the seven-axis collaborative robot (6) is equipped with a quick-change jig plate (7), a 2D camera (28), and a camera light source (29). The quick-change jig plate (7) can be connected to the quick-change jig (27) on quick-change locking module one (4) or quick-change locking module two (5), so that the end of the seven-axis collaborative robot can carry two different locking modules to tighten screws in mounting holes of different sizes.

2. The automatic screw-locking device for chassis shell according to claim 1, characterized in that, The quick-change lock assembly module 1 (4) and quick-change lock assembly module 2 (5) are equipped with an electric intelligent tightening gun (30), a cylinder (31), a nail suction nozzle (32) or a nail blowing nozzle (33). The cylinder (31) drives the electric intelligent tightening gun (30) to move up and down. The nail suction nozzle (32) picks up small screws from the nail outlet of feeder 1 (35). Feeder 2 (36) blows large screws into the nail blowing nozzle (33) through the nail blowing tube (34).

3. The automatic screw-locking device for chassis shell according to claim 1, characterized in that, The power amplifier chassis mounting platform (10) is equipped with a rodless cylinder (13), a guide rail slider one (14) and a guide rail slider two (15), a power amplifier chassis mounting plate (12), a power amplifier chassis front positioning block 1 (20), a power amplifier chassis front positioning block 2 (21), a left positioning block (22), a right positioning block (23), a rear positioning block (24), and a positioning block butterfly nut (25). The rodless cylinder (13) pushes the power amplifier mounting plate (12) to move between the installation position and the locking position. The 6 adjustable positioning blocks are used to install and position the power amplifier chassis (11). When it is necessary to adjust the position of the chassis or replace it with a different model chassis, the position of the positioning block can be quickly adjusted by loosening the butterfly nut (25).

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