Metal door and manufacturing method thereof
By integrally stamping and welding a hollow grille assembly onto a metal door panel, and then covering the glass with the hollow grille, the problems of complex manufacturing of existing metal fences or metal-glass doors and the lack of variety in glass strips are solved. This enables personalized design and industrialized production, reducing costs and transportation inconvenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-09
- Publication Date
- 2026-04-03
AI Technical Summary
The existing manufacturing process for metal fences or metal-glass doors is complex, making it difficult to achieve personalized design and industrialized production. Furthermore, the glass clamps have a limited range of styles, resulting in waste of materials and labor, and inconvenient transportation.
The door is formed by integrally stamping and forming a hollow grille assembly on a metal door panel. The metal door is formed by bending and welding the hollow grille assembly, and the hollow grille assembly is then covered on the glass surface, replacing the traditional glass strip.
It enables personalized design and industrialized production of metal doors, reducing manufacturing costs and time. The glass strips are replaced by a one-piece stamped hollow grille with a flush surface, saving transportation space and improving the door's sturdiness and durability.
Smart Images

Figure CN121781845A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of door technology, specifically to a metal door and its manufacturing method. Background Technology
[0002] In existing technologies, both domestically and internationally, the production of metal fences or metal gates mostly involves sawing and welding metal tubes. This method is complex in its material cutting and welding processes and makes it difficult to produce metal fences or metal gates of various styles. Another method uses aluminum alloy components for on-site assembly. However, metal gates produced using this method do not meet anti-theft requirements.
[0003] In existing technologies, both domestically and internationally, metal-glass doors typically involve either drilling glass holes in the metal door panel, pressing the door frame in place, and then securing the glass with glass strips; or manufacturing the door panel first, drilling the glass holes, and then using glass strips to fix the glass to the door panel. Both of these processes require the fabrication of glass strips, which are often limited in design, resulting in low efficiency and waste of materials and labor. Furthermore, the glass strips often protrude from the door panel surface, causing transportation difficulties.
[0004] Existing technologies for producing metal fences, metal gates, or metal-glass doors can no longer meet the needs of personalized design and industrialized production. Summary of the Invention
[0005] This invention provides a metal door and a method for manufacturing the same, which solves the above-mentioned problems.
[0006] The present invention provides a metal door, comprising: a metal door panel having a perforated grille integrally stamped with the metal door panel.
[0007] Preferably, the metal door comprises: two metal door panels; each metal door panel has a perforated grille assembly integrally stamped with each metal door panel; the sides and bottom of each perforated grille assembly are bent; the two metal door panels are welded together by bending the bottom of their respective perforated grille assemblies to form a metal door with a perforated grille.
[0008] The present invention provides a method for manufacturing a metal door, comprising: stamping out perforated grille components on two metal plates according to a preset shape and depth; placing the two metal plates with the stamped perforated grille components symmetrically, and welding the two metal plates together by bending the bottom of the perforated grille components of the two metal plates to form a metal door with perforated grilles.
[0009] The present invention also provides a method for manufacturing a metal door, comprising: stamping a perforated grid on a metal plate according to a preset shape and depth to obtain a metal door.
[0010] The present invention also provides a metal door, comprising: a metal door skin, a filling material and glass; the glass is located in a reserved glass hole in the filling material and at least one surface of the glass is covered with a perforated grid assembly; the perforated grid assembly is integrally stamped with the metal door skin.
[0011] Preferably, the sides and bottom of the perforated grille assembly are bent; the bend on the bottom of the perforated grille assembly is horizontally located on the surface of the glass.
[0012] Preferably, the metal door comprises two metal door panels; one metal door panel has a perforated grille assembly integrally formed by stamping; the other metal door panel has an opening; one side of the glass is covered by the perforated grille assembly; the other side of the glass is located at the opening on the other metal door panel and is fixed by a glass strip.
[0013] Preferably, the metal door comprises two metal door skins; each metal door skin has a perforated grille assembly integrally formed by stamping; both sides of the glass are covered with the perforated grille assembly.
[0014] The present invention also provides a method for manufacturing a metal door, comprising: stamping a perforated grid assembly into a metal plate according to a preset shape and depth to obtain a metal door skin; punching holes in another metal plate to obtain another metal door skin; placing the two metal door skins, which have been filled with filling material and a frame, on a press to press them together; placing glass through the holes into the reserved glass holes in the filling material of the pressed metal door, with one side of the glass corresponding to the perforated grid assembly; and fixing the other side of the glass to the opening on the other metal door skin by a glass strip.
[0015] The present invention further provides a method for manufacturing a metal door, comprising: stamping out perforated grid components on two metal plates according to a preset shape and depth to obtain two metal door skins; placing filling material inside the metal door skin with a frame already placed therein; placing glass in the pre-reserved glass holes in the filling material with one side corresponding to the perforated grid components; placing another metal door skin on the frame with the filling material and glass already placed therein, so that the perforated grid components are located on the other side of the glass; and pressing them together on a press.
[0016] The beneficial effects of the present invention are as follows: The metal door and its manufacturing method provided by the present invention can produce metal doors of any style according to any shape and depth, saving manufacturing time, enabling mass industrial production, and greatly reducing manufacturing costs. Attached Figure Description
[0017] Figures 1-2 This is a schematic diagram of the structure of the hollowed-out grille assembly a1 and the hollowed-out grille assembly b1 provided in Embodiment 2 of the present invention.
[0018] Figures 3-4 This is a schematic diagram of the horizontal cross-sectional structure of the hollow grid assembly a1 and the hollow grid assembly b1 provided in Embodiment 2 of the present invention.
[0019] Figure 5 This is a welding schematic diagram of the hollow grid assembly a1 and the hollow grid assembly b1 provided in Embodiment 2 of the present invention.
[0020] Figure 6 This is a schematic diagram of the structure of the metal door skin c with the hollowed-out grille component c-1 provided in Embodiment 3 of the present invention.
[0021] Figure 7 This is a schematic diagram of the structure of a metal door skin d with a hollowed-out grille component d-1 provided in Embodiment 3 of the present invention.
[0022] Figure 8 This is a cross-sectional structural diagram of the metal glass door provided in Embodiment 3 of the present invention. Detailed Implementation
[0023] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention. Example 1
[0024] This embodiment provides a metal door, including: a metal door panel, wherein the metal door panel has a perforated grille integrally stamped with the metal door skin.
[0025] Preferably, the metal door includes: two metal door panels; each metal door panel has a perforated grille assembly integrally stamped with each metal door panel; each perforated grille assembly has bends on its sides and bottom; the two metal door panels are welded together by bending the bottom of their respective perforated grille assemblies to form a metal door with perforated grilles.
[0026] This embodiment provides a method for manufacturing a metal door, including: stamping out perforated grille components on two metal plates according to a preset shape and depth; placing the two metal plates with the stamped perforated grille components symmetrically; and welding the two metal plates together by bending the bottom of the perforated grille components on the two metal plates to form a metal door with perforated grilles.
[0027] This embodiment provides a method for manufacturing a metal door, including: stamping a perforated grid on a metal plate according to a preset shape and depth to obtain a metal door.
[0028] This embodiment also provides a metal door, including: a metal door skin, a filling material, and glass; the glass is located in a reserved glass hole in the filling material and at least one surface of the glass is covered with a perforated grid assembly; the perforated grid assembly is integrally stamped with the metal door skin.
[0029] Preferably, the sides and bottom of the perforated grille assembly are bent; the bend on the bottom of the perforated grille assembly is horizontally located on the surface of the glass.
[0030] Preferably, the metal door comprises two metal door panels; one metal door panel has a perforated grille assembly integrally formed by stamping; the other metal door panel has an opening; one side of the glass is covered by the perforated grille assembly; the other side of the glass is located at the opening on the other metal door panel and is fixed by a glass strip.
[0031] Preferably, the metal door comprises two metal door skins; each metal door skin has a perforated grille assembly integrally formed by stamping; both sides of the glass are covered with the perforated grille assembly.
[0032] This embodiment also provides a method for manufacturing a metal door, including: A metal door skin is obtained by stamping a perforated grille assembly into a metal plate according to a preset shape and depth; another metal door skin is obtained by punching holes in another metal plate; a frame is placed on the metal door skin with the perforated grille assembly coated with glue; filler material is placed inside the frame; another metal door skin with holes coated with glue is placed on the frame with filler material, and then pressed into shape on a press; glass is placed through the holes into the reserved glass holes in the filler material of the pressed metal door, with one side of the glass corresponding to the perforated grille assembly; the other side of the glass is fixed to the hole in the other metal door skin by a glass strip.
[0033] This embodiment further provides a method for manufacturing a metal door, including: stamping out perforated grid components on two metal plates according to a preset shape and depth to obtain two metal door skins; placing filling material inside the metal door skin with the frame already placed; placing glass in the reserved glass holes in the filling material with one side corresponding to the perforated grid component; placing another metal door skin on the frame with the filling material and glass already placed, so that the perforated grid component is located on the other side of the glass; and pressing them together on a press.
[0034] The beneficial effects of this embodiment are as follows: The metal door and its manufacturing method provided in this embodiment can produce metal doors of any style according to any shape and depth, saving manufacturing time, enabling mass industrial production, and greatly reducing manufacturing costs. Example 2
[0035] This embodiment provides a stamped metal fence gate and its manufacturing method. The method includes: according to the required style and stamping depth, directly stamping the required hollow grid onto a metal plate, interlocking two stamped metal plates, and uniformly welding them at the contact surface to produce the required metal fence or metal fence gate.
[0036] This embodiment provides a method for manufacturing a metal fence gate, the specific steps of which are as follows: The first step is to symmetrically stamp the required perforated grille components on two metal plates according to the shape and stamping depth of the desired style. Furthermore, the two stamped metal plates are placed symmetrically.
[0037] Furthermore, the two metal plates are welded evenly at the joint.
[0038] like Figures 1-5 As shown, according to the preset shape and depth, hollow grille components a1 and b1 are stamped out on two metal plates respectively; the metal plates with the stamped hollow grille components a1 and b1 are placed symmetrically, and the two metal plates are welded together by bending the bottom of hollow grille component a1-1 and the bottom of hollow grille component b1-1 to form a metal door with hollow grille.
[0039] This embodiment also provides a method for manufacturing a metal fence gate, the specific steps of which are as follows: The first step is to stamp the metal sheet into a perforated grille according to the required shape and stamping depth. Further, according to design requirements, the stamped perforated grille and the metal sheet are colored to obtain a metal gate.
[0040] This embodiment provides a stamped metal gate and its manufacturing method, which can directly stamp out any style of openwork grille according to any shape and depth on a metal sheet. By stamping an openwork grille on a single metal sheet or by interlocking two stamped metal sheets and uniformly welding them at the contact surfaces, various metal fences or metal gates can be produced, saving manufacturing time and costs, enabling mass industrial production, and significantly reducing manufacturing costs. Example 3
[0041] This embodiment provides a metal-glass door, including: a metal door skin c and a metal door skin d; the metal door skin c has a perforated grille assembly c-1 integrally formed by stamping; the metal door skin d has a perforated grille assembly d-1 integrally formed by stamping; both sides of the glass e are covered with perforated grille assembly c-1 and perforated grille assembly d-1 respectively. The perforated grille assembly c-1 has a bend c-1-1 on its side and a bend c-1-2 on its bottom surface; the perforated grille assembly d-1 has a bend d-1-1 on its side and a bend d-1-2 on its bottom surface; the bend c-1-2 on the bottom surface of the perforated grille assembly c-1-1 is horizontally located on one surface of the glass e. The bend d-1-2 on the bottom surface of the perforated grille assembly d-1-1 is horizontally located on the other surface of the glass e.
[0042] This embodiment provides a method for manufacturing a metal-glass door, the specific steps of which are as follows: The first step is to stamp out the desired shape and stamping depth onto two metal sheets, respectively. Figures 6-7 The metal door skin c with perforated grille component c-1 and the metal door skin d with perforated grille component d-1 are shown. Further, the frame is placed on the metal door panel c, which has been coated with glue.
[0043] The frame can be made of materials such as metal, wood, and plastic according to design requirements, or metal door skin can be directly bent into door edges to replace the frame.
[0044] Furthermore, filler materials, including but not limited to foam, PU, honeycomb paper, honeycomb aluminum, fireproof cotton, and any other materials, are placed inside the skeleton.
[0045] Furthermore, glass e is placed inside a pre-drilled hole in the filling material and aligns with the position of the perforated grid assembly c-1.
[0046] Further, the metal door skin d, coated with adhesive, is placed on the frame containing the filler material and glass e, so that the perforated grille assembly d-1 is located on the other side of glass e; then it is pressed together on a press. The resulting cross-sectional view of the metal-glass door is shown below. Figure 8 As shown.
[0047] In this embodiment, the metal-glass door can be integrally stamped onto two metal door panels to obtain symmetrical perforated grille assemblies, as described above, so that both sides of the glass have perforated grille assemblies. Alternatively, a single metal door panel can be integrally stamped to obtain a perforated grille assembly, with an opening made in the other metal door panel, so that one side of the glass is covered by the perforated grille assembly; the other side of the glass is located at the opening in the other metal door panel and is fixed by a glass retaining strip. The specific steps are as follows: A perforated grid assembly is stamped out of a metal sheet according to a preset shape and depth to obtain a metal door skin; holes are punched out on another metal sheet to obtain another metal door skin; Place the frame onto the metal door panel with the stamped perforated grille assembly coated with glue; In this embodiment, the frame can be made of materials such as metal, wood, or plastic according to design requirements, or a metal door skin can be directly bent into the door edge to replace the frame.
[0048] Furthermore, filler materials, including but not limited to foam, PU, honeycomb paper, honeycomb aluminum, fireproof cotton, and any other materials, are placed inside the skeleton.
[0049] Place another metal door panel with openings, coated with glue, onto the frame with the filling material already placed, and press it into shape on a press. Place the glass through the opening into the pre-drilled glass hole in the filling material of the pressed metal door, aligning one side of the glass with the perforated grille assembly; place the glass strip on the other side of the glass and secure it with screws.
[0050] This embodiment provides a metal glass door and its manufacturing method. It uses a hollow grille assembly integrally stamped with the metal door skin to replace the glass strip on the metal glass in the prior art. The hollow grille assembly can be stamped with any style, shape and depth according to design requirements to make any style of metal glass door. It can be mass-produced industrially and saves the time and cost of making glass strips separately. Since the hollow grille assembly and the metal door skin are integrally stamped, their surfaces are flush, saving transportation space, making it sturdy and durable, reducing costs and facilitating transportation and use.
[0051] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.
Claims
1. A metal door, characterized in that, include: A metal door panel having a perforated grille integrally stamped with the metal door panel.
2. The metal door according to claim 1, characterized in that, include: Two metal door panels; each metal door panel has a perforated grille assembly integrally stamped with each metal door panel; each perforated grille assembly has bends on its sides and bottom; the two metal door panels are welded together by bending the bottom of their respective perforated grille assemblies to form a metal door with perforated grilles.
3. The method for manufacturing a metal door according to claim 1 or 2, characterized in that, include: According to the preset shape and depth, the hollow grid components are stamped out on two metal plates respectively; Two metal plates with a perforated grille assembly are placed symmetrically, and the two metal plates are welded together by bending the bottom of the perforated grille assembly to form a metal door with a perforated grille.
4. The method for manufacturing a metal door according to claim 1, characterized in that, A perforated grid is stamped out of a metal plate according to a preset shape and depth to obtain a metal door.
5. A metal door, characterized in that, include: The door panel comprises a metal door skin, a filling material, and glass; the glass is located within a pre-drilled glass hole in the filling material and at least one surface of the glass is covered with a perforated grille assembly; the perforated grille assembly is integrally stamped with the metal door skin.
6. The metal door according to claim 5, characterized in that, The perforated grille assembly has bends on both its sides and bottom; the bends on the bottom of the perforated grille assembly are horizontally located on the surface of the glass.
7. The metal door according to claim 5 or 6, characterized in that, It includes two metal door panels; one metal door panel has a perforated grille assembly integrally formed by stamping; the other metal door panel has an opening; one side of the glass is covered by the perforated grille assembly; the other side of the glass is located at the opening on the other metal door panel and is fixed by a glass strip.
8. The metal door according to claim 5 or 6, characterized in that, It includes two metal door panels; each metal door panel has a perforated grille assembly that is integrally formed by stamping; both sides of the glass are covered with the perforated grille assembly.
9. The method for manufacturing a metal door according to claim 7, characterized in that, include: A metal door skin is obtained by stamping a perforated grid assembly onto a metal sheet according to a preset shape and depth. Punch holes in another metal plate to obtain another metal door skin; place the two metal door skins with filling material and frame already placed on a press to press them together; place the glass through the holes into the reserved glass holes in the filling material of the pressed metal door and make one side of the glass correspond to the hollow grid assembly; fix the other side of the glass to the opening on the other metal door skin by glass strips.
10. The method for manufacturing a metal door according to claim 8, characterized in that, include: According to the preset shape and depth, two metal door skins are obtained by stamping out hollow grid components on two metal plates respectively; the filling material is placed inside the metal door skin with the frame already placed; the glass is placed in the reserved glass hole in the filling material with one side corresponding to the hollow grid component; the other metal door skin is placed on the frame with the filling material and glass already placed, so that the hollow grid component is on the other side of the glass; and then pressed together on a press.