Apr 7, 2026

US12595701 - Manufacturing method of an intelligent anti-terrorism protective door

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A manufacturing method of an intelligent anti-terrorism protective door comprises the following steps: S1, making front and rear door panels; S2, cutting the composite door core panel materials; S3, making protective door frame; S4, assembling bulletproof and explosion-proof armored composite door core panel; S5, making the door frame; S6, decorating the surface of the protective door; S7, overall assembly; S8, installing the lock; S9, packaging the protective door. The manufacturing method is simple and easy to implement, with strict control over every aspect from raw materials, production processes, to quality control during the manufacturing process, ensuring the product quality. This not only makes the product fire-proof and anti-theft, but also has explosion-proof and bulletproof properties, effectively preventing explosions and bullet attacks, greatly improving the security of the protective door.

Inventors: Lili Liu, Enyuan Liu
Filing date: 2023-12-29

doorsecuritybulletproofexplosion-proof

The patent describes a method for manufacturing an intelligent anti-terrorism protective door that incorporates bulletproof and explosion-proof features, ensuring high security through a detailed production process. The method includes steps such as creating door panels from low-carbon steel, assembling composite core panels, and rigorous quality control measures to enhance the door’s protective capabilities.

Claim 1

1 . A manufacturing method of an intelligent anti-terrorism protective door comprises the following steps: step one, making front and rear door panels: the door panels are made of low-carbon steel plates with a thickness of 1.5 mm, they are cut according to specified dimensions and then folded into shape by a bending machine, end faces of the panels are smooth and any burrs are properly handled, they are then set aside for later use; step two, cutting composite door core panel materials: checking said materials and specifications of layers of the composite door core panel, cutting the core panel materials into the specified dimensions with a laser cutting machine, and punching out lock holes and installation process holes accordingly; step three, making a protective door frame: material of the frame is of low-carbon steel plate with a thickness of 3.5 mm, which is cut according to specified dimensions, and then punched and welded to form the frame, tolerance of finished product is no more than 0.3 mm; step four, assembling the composite door core panel: coating front and rear mating surfaces of each layer of the composite door core panel with two-component silicone adhesive, then assembling them in the frame in sequence, assembling the front and rear door panels on a front and a back of the frame respectively, placing the front and rear door panels and the front and back of the frame in a pressing machine to be pressed into specified dimensions, afterwards, drying the front and rear door panels and the front and back of the frame naturally for 6 hours in a ventilated area, production of the composite door core panel is completed; step five, making the door frame: cutting high-strength tough steel plate with a thickness of 2.5 mm into specified dimensions, and pulling it into shape through a frame material rolling machine, removing burrs, and welding it into shape, tolerance of finished product should not exceed 0.3 mm according to design requirements; step six, decorating a surface of the protective door: spray-painting processed door frame, composite door core panel, and protective door front and rear panels, and hanging the processed door frame, the composite door core panel, and the protective door front and rear panels on a curing oven production line for spray coating and curing; step seven, first, vertically placing the door frame on an assembly workbench, installing the composite door core panel into the door frame, installing hinges, adjusting door gap, and checking whether the composite door core panel is parallel to the door frame; step eight, installing a lock: first, checking whether a lock hole and the lock match stably, installing the lock into the lock hole, then installing a lock core into the lock, using an electric screwdriver to tighten front and back screws, connecting a power supply, and performing switch debugging; step nine, packaging the protective door: checking door accessories and placing them inside a wooden packaging box along with the protective door, covering the door with bubble wrap to prevent collision and damage, then, securing it with iron packaging tape, and packaging is then completed. step one, making front and rear door panels: the door panels are made of low-carbon steel plates with a thickness of 1.5 mm, they are cut according to specified dimensions and then folded into shape by a bending machine, end faces of the panels are smooth and any burrs are properly handled, they are then set aside for later use; step two, cutting composite door core panel materials: checking said materials and specifications of layers of the composite door core panel, cutting the core panel materials into the specified dimensions with a laser cutting machine, and punching out lock holes and installation process holes accordingly; step three, making a protective door frame: material of the frame is of low-carbon steel plate with a thickness of 3.5 mm, which is cut according to specified dimensions, and then punched and welded to form the frame, tolerance of finished product is no more than 0.3 mm; step four, assembling the composite door core panel: coating front and rear mating surfaces of each layer of the composite door core panel with two-component silicone adhesive, then assembling them in the frame in sequence, assembling the front and rear door panels on a front and a back of the frame respectively, placing the front and rear door panels and the front and back of the frame in a pressing machine to be pressed into specified dimensions, afterwards, drying the front and rear door panels and the front and back of the frame naturally for 6 hours in a ventilated area, production of the composite door core panel is completed; step five, making the door frame: cutting high-strength tough steel plate with a thickness of 2.5 mm into specified dimensions, and pulling it into shape through a frame material rolling machine, removing burrs, and welding it into shape, tolerance of finished product should not exceed 0.3 mm according to design requirements; step six, decorating a surface of the protective door: spray-painting processed door frame, composite door core panel, and protective door front and rear panels, and hanging the processed door frame, the composite door core panel, and the protective door front and rear panels on a curing oven production line for spray coating and curing; step seven, first, vertically placing the door frame on an assembly workbench, installing the composite door core panel into the door frame, installing hinges, adjusting door gap, and checking whether the composite door core panel is parallel to the door frame; step eight, installing a lock: first, checking whether a lock hole and the lock match stably, installing the lock into the lock hole, then installing a lock core into the lock, using an electric screwdriver to tighten front and back screws, connecting a power supply, and performing switch debugging; step nine, packaging the protective door: checking door accessories and placing them inside a wooden packaging box along with the protective door, covering the door with bubble wrap to prevent collision and damage, then, securing it with iron packaging tape, and packaging is then completed.

Google Patents

https://patents.google.com/patent/US12595701

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12595701