Customized model self-tapping screw inner hexagonal self-tapping cup head self-tapping sound nail cylindrical head pointed tail 5/8

structure for concealing installation screws, comprising a locking piece, a driving piece, a bottom plate, a blocking cover and a handle head, the lower ends of the two locking pieces are provided with positioning holes, and the locking pieces pass through the positioning holes and the locking piece positioning posts on the base The occlusal and fixed, the middle of the two locking pieces is provided with a protruding point, the movable groove of the driving piece corresponds to the protruding points of the three locking pieces for fixing, the riveting point holes and screw holes of the bottom plate and the riveting points of the base The position that matches the screw holes and is fixed by screws, the blocking cover is directly inserted into the bottom plate, and the blocking cover is fixed by the rotating drive piece, the handle head is inserted into the base, and the slot of the handle head moves to the locking piece at the locking piece Lock the handle.

In another embodiment of Guangdong Yueluo Hardware Industrial Co., Ltd., the conveying device 3 includes a motor 31 and a circular rotating disk 34, the motor 31 drives the circular rotating disk 34 to rotate, and the circular rotating disk 34 is evenly provided with screws in the circumferential direction. The matching screw accommodating hole 35, the screw enters the screw accommodating hole 35, the motor 31 drives the circular rotating plate 34 to rotate, so that the screw is first slotted by the cutting wheel 42, and then polished by the fixing wheel 48, and the screw is in the screw accommodating hole 35. It is fixed, which is more secure and reliable during the slotting process. Preferably, the circular rotating disk 34 includes a circular rotating disk 32 and a sector-shaped fixed disk 33. The circular rotating disk 32 is evenly provided with screw receiving recesses matching the screws in the circumferential direction, and the recesses and the sector-shaped fixed disk 33 are formed with the screws The matching screw receiving holes face the cutting wheel 42 and the fixing wheel 56 .

National standard lock nut GB/T 6182-2000 Type 2 non-metallic insert hexagonal lock nut. GB/T 6183.1-2000 Non-metallic insert hexagonal flange lock nuts. GB/T 6183.2-2000 Non-metallic insert hexagonal flange lock nuts - fine pitch. GB/T 6184-2000 Type 1 All-Metal Hexagon Lock Nuts. GB/T 6185.1-2000 Type 2 all-metal hexagonal lock nuts. GB/T 6185.2-2000 Type 2 all-metal hexagonal lock nuts with fine teeth. GB/T 6186-2000 Type 2 All-Metal Hexagon Lock Nuts Grade 9. GB/T 6187.1-2000 All-metal hexagonal flange lock nuts. GB/T 6187.2-2000 All-metal hexagonal flange lock nut with fine teeth. GB/T 889.1-2000 Type 1 non-metallic insert hexagon lock nuts. GB/T 889.2-2000 Type 1 non-metallic insert hexagonal lock nut fine pitch.

In order to solve the above-mentioned technical problems, a technical scheme adopted by Guangdong Yueluo Hardware Industry Co., Ltd. is: a rivet capable of selecting a breaking point is provided, comprising a nail body and a mandrel, and the mandrel is sequentially provided with from the head to the tail. Hemispherical head, cone and cylinder, the cones are provided with at least three, the mandrel penetrates into the nail body from the bottom of the nail body, and then goes out from the head of the nail body, the hemispherical head and the cylinder Exposed on the bottom of the nail body and the outside of the head, the cones are all arranged inside the nail body.

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