Airbag inner insert machining process
By optimizing the processing technology of airbag inserts through cold stamping, the problems of material waste and low efficiency in traditional processes have been solved, and efficient and lightweight insert molding has been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUXI ZHONGJIE VIBRATION ISOLATORS
- Filing Date
- 2024-01-24
- Publication Date
- 2026-08-04
AI Technical Summary
Traditional airbag insert manufacturing processes suffer from significant material waste, low production efficiency, heavy product weight, and cumbersome processes, failing to meet product molding requirements.
Using cold stamping technology, the processing technology of the airbag insert is optimized through processes such as blanking and layout, stretching, shaping, bottom punching, punching, turning, flaring, flattening, pressing ribs, bending and blanking. This includes steps such as punching workpiece positions on galvanized steel strips, forming flange edges and buckle parts, cutting fixing holes, flaring, pressing out positioning ribs and bending support legs.
It has achieved thin-walled, high-precision airbag insert molding, which improves material utilization and production efficiency, and the product is lightweight and meets molding requirements.
Smart Images
Figure CN118176071B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of cold stamping technology, such as the processing technology of airbag inserts. Background Technology
[0002] The airbag insert is an important airbag component, widely used in automotive airbags, serving to mount the airbag body onto the vehicle body. For example... Figure 1 and Figure 2 As shown, the airbag insert 1 in a new energy vehicle has a relatively complex structural design. It includes a ring-shaped buckle part 11, on which a concave neck 12 and a positioning rib 13 are formed. One end of the buckle part 11 is provided with a flange edge 14, on which mounting holes 15 are evenly distributed. The other end of the buckle part 11 is provided with a support leg 16, which has a certain bending angle and is provided with a fixing hole 17.
[0003] The traditional manufacturing process for airbag inserts involves creating a blank using aluminum die casting, followed by machining. This process has drawbacks such as significant material waste, low production efficiency, heavy finished products, and cumbersome procedures. Therefore, the traditional manufacturing process cannot meet the product molding requirements and needs further optimization. Summary of the Invention
[0004] This application provides a processing technology for airbag inserts, which ensures the molding quality of airbag inserts and improves production efficiency.
[0005] A process for manufacturing an airbag insert includes:
[0006] Punching and layout involves punching out individual workpiece positions along the length of a galvanized steel strip.
[0007] Stretching creates hollow bosses at each workpiece location, with the outer ring of the hollow bosses forming the flange edge of the airbag insert.
[0008] Shaping involves pressing steps into the sidewalls of the hollow boss;
[0009] Cut out the concave and convex shapes on the end face of the hollow boss;
[0010] A single punching process creates holes in the concave and convex shapes to form the fixing holes for the airbag inserts.
[0011] The concave and convex shapes are turned outward to form a cylindrical body, which is flush with the step, forming the buckle part and support leg of the airbag insert.
[0012] Flaring is performed to increase the diameter of the cylinder to match the diameter of the hollow boss.
[0013] Flatten the cylinder and press out creases at the connection between the cylinder and the step to form the concave neck of the airbag insert.
[0014] The pressure ribs are formed by applying radial pressure to the cylinder to create positioning ribs for the airbag inserts.
[0015] Bend the legs to the set angle.
[0016] Secondary punching: punch mounting holes for the airbag insert on the flange edge;
[0017] The material is unloaded, the connection between the flange edge and the galvanized steel strip is severed, and the finished product falls freely.
[0018] In one embodiment, multiple workpiece slots are punched out along the length of the galvanized steel strip, including:
[0019] First, punch out multiple equidistant positioning holes along the length of the galvanized steel strip. The workpiece position is set between two adjacent positioning holes. Then, punch out gaps on the galvanized steel strip to separate the two adjacent workpiece positions.
[0020] In one embodiment, after pressing a step into the sidewall of the hollow boss and before cutting out the concave-convex shape on the end face of the hollow boss, the method further includes:
[0021] Imprinting involves pressing indentations onto the end face of the hollow boss to facilitate punching and positioning.
[0022] In one embodiment, the indentation does not extend beyond the edge of the raised or recessed shape.
[0023] In one embodiment, punching out the mounting hole of the airbag insert includes:
[0024] The evenly distributed mounting holes are punched in stages, with adjacent mounting holes being staggered in shape. Attached Figure Description
[0025] Figure 1 This is a front view of the structure of an airbag insert product;
[0026] Figure 2 This is a top view of the structure of an airbag insert product;
[0027] Figure 3 This is a flowchart of a manufacturing process for an airbag insert provided in an embodiment of this application;
[0028] Figure 4 This is a schematic diagram of the structure corresponding to step S010 in the processing technology of an airbag insert provided in an embodiment of this application;
[0029] Figure 5 This is a schematic diagram of the structure corresponding to step S020 in the processing technology of an airbag insert provided in an embodiment of this application;
[0030] Figure 6 yes Figure 5 Top view;
[0031] Figure 7 This is a schematic diagram of the structure corresponding to step S030 in the processing technology of an airbag insert provided in an embodiment of this application;
[0032] Figure 8 yes Figure 7 Top view;
[0033] Figure 9 This is a schematic diagram of the structure corresponding to step S040 in the processing technology of an airbag insert provided in an embodiment of this application;
[0034] Figure 10 yes Figure 9 Top view;
[0035] Figure 11 This is a schematic diagram of the structure corresponding to step S050 in the processing technology of an airbag insert provided in an embodiment of this application;
[0036] Figure 12 yes Figure 11 Top view;
[0037] Figure 13 This is a schematic diagram of the structure corresponding to step S060 in the processing technology of an airbag insert provided in an embodiment of this application;
[0038] Figure 14 yes Figure 13 Top view;
[0039] Figure 15 This is a schematic diagram of the structure corresponding to step S070 in the processing technology of an airbag insert provided in an embodiment of this application;
[0040] Figure 16 yes Figure 15 Top view;
[0041] Figure 17 This is a schematic diagram of the structure corresponding to step S080 in the processing technology of an airbag insert provided in an embodiment of this application;
[0042] Figure 18 yes Figure 17 Top view;
[0043] Figure 19 This is a schematic diagram of the structure corresponding to step S090 in the processing technology of an airbag insert provided in an embodiment of this application;
[0044] Figure 20 yes Figure 19 Top view;
[0045] Figure 21 This is a schematic diagram of the structure corresponding to step S100 in the processing technology of an airbag insert provided in an embodiment of this application;
[0046] Figure 22 yes Figure 21 Top view;
[0047] Figure 23 This is a schematic diagram of the structure corresponding to step S110 in the processing technology of an airbag insert provided in an embodiment of this application;
[0048] Figure 24 yes Figure 23 Top view;
[0049] Figure 25 This is a schematic diagram of the structure corresponding to step S120 in the processing technology of an airbag insert provided in an embodiment of this application;
[0050] Figure 26 yes Figure 25 Top view;
[0051] Figure 27 This is a schematic diagram of the structure corresponding to step S120 in another airbag insert processing technology provided in this application embodiment;
[0052] Figure 28 yes Figure 27 Top view;
[0053] Figure 29 This is a schematic diagram of the structure corresponding to step S130 in the processing technology of an airbag insert provided in an embodiment of this application;
[0054] Figure 30 yes Figure 29 Top view.
[0055] In the picture:
[0056] 1. Airbag insert; 11. Buckle; 12. Recessed neck; 13. Positioning rib; 14. Flange edge; 15. Mounting hole; 16. Support leg; 17. Fixing hole; 2. Galvanized steel strip; 21. Workpiece position; 22. Positioning hole; 23. Gap; 3. Hollow boss; 4. Step; 5. Indentation; 6. Concave and convex shape; 7. Cylinder; 8. Crease. Detailed Implementation
[0057] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of this application.
[0058] This embodiment provides a processing technology for airbag inserts, specifically addressing... Figure 1 and Figure 2 The airbag insert 1 shown has an optimized process to solve the problems of material waste, complex process, low production efficiency and heavy product weight in the traditional die casting and cutting molding method, and to ensure molding quality.
[0059] like Figure 3 As shown, the manufacturing process of the airbag insert includes:
[0060] Step S010, Blanking and Layout: Punch out individual workpiece positions 21 along the length of the galvanized steel strip 2, see details. Figure 4 .
[0061] In the blanking and layout process, multiple positioning holes 22 are punched out at equal intervals along the length of the galvanized steel strip 2. The workpiece material position 21 is set between two adjacent positioning holes 22. Then, gaps 23 are punched out on the galvanized steel strip 2 to separate two adjacent workpiece material positions 21, so as to optimize the layout and make full use of the area of the galvanized steel strip 2.
[0062] Step S020, Stretching: A hollow boss 3 is pressed out on each workpiece material position 21. The outer ring of the hollow boss 3 forms the flange edge 14 of the airbag inner insert 1. See details. Figure 5 and Figure 6 .
[0063] Step S030, Shaping: Press a step 4 into the side wall of the hollow boss 3, see details. Figure 7 and Figure 8 Step 4 here is for the subsequent shaping of the concave neck 12.
[0064] Step S040: Imprinting. An indentation 5 is pressed onto the end face of the hollow boss 3 to facilitate punching and positioning. See details. Figure 9 and Figure 10 This is to facilitate subsequent positioning and material extension.
[0065] Step S050, Bottom Cutting: Cut out the concave and convex shapes 6 on the end face of the hollow boss 3, see details. Figure 11 and Figure 12 The indentation 5 should not extend beyond the edge of the raised / concave shape 6 to avoid affecting the molding quality.
[0066] Step S060, First punching: Drill holes in the concave-convex shape 6 to form the fixing holes 17 of the airbag inner insert 1, see details. Figures 13 to 14 .
[0067] Step S070, Flipping: Flip the concave-convex shape 6 outward to form a cylindrical body 7. The cylindrical body 7 is flush with the step 4, forming the buckle part 11 and the support leg 16 of the airbag inner insert 1. See details. Figures 15 to 16 .
[0068] Step S080, Flaring: Flaring the diameter of the cylinder 7 to match the diameter of the hollow boss 3, see details. Figures 17 to 18 .
[0069] Step S090, Flattening: Press out creases 8 at the connection between the cylinder 7 and the step 4 to form the concave neck 12 of the airbag insert 1, see details. Figures 19 to 20 .
[0070] Step S100, Rib Forming: Apply radial pressure to the cylinder 7 to form the positioning rib 13 of the airbag inner insert 1, see details. Figures 21 to 22 .
[0071] Step S110, Bending: Bend the support leg 16 to the set angle, see details. Figures 23 to 24 .
[0072] Step S120, Secondary punching: Punch mounting holes 15 for the airbag insert 1 on the flange edge 14. For example, the evenly distributed mounting holes 15 are punched in stages, with adjacent mounting holes 15 staggered to ensure the forming quality of the densely packed holes. This embodiment takes two-step forming as an example, see details. Figures 25 to 28 .
[0073] Step S130, Blanking: Cut the connection between flange edge 14 and galvanized steel strip 2, and let the finished product fall freely. See details. Figures 29 to 30 Finally, the target airbag insert product 1 was obtained by cutting the material.
[0074] Therefore, the above-mentioned airbag insert processing technology realizes a series of processes such as blanking and layout, stretching, shaping, bottom punching, hole punching, hole turning, flaring, flattening, rib pressing, bending, and blanking, thereby forming a thin-walled airbag insert 1 product with good consistency, ensuring the precision of the airbag insert 1, improving material utilization, high production efficiency, and light product weight.
[0075] This application also provides an airbag insert, which is manufactured based on the above-described airbag insert processing technology and has multiple structures as described in the airbag insert 1 formed in the above process.
Claims
1. Airbag internal component manufacturing process, including: Punching and layout: punch out multiple workpiece positions (21) along the length of the galvanized steel strip (2); Stretch, and press out a hollow boss (3) on each workpiece position (21), the outer ring of which forms the flange edge (14) of the airbag inner insert (1); Shaping, pressing out a step (4) on the side wall of the hollow boss (3); Punch the bottom and cut out the concave and convex shape (6) on the end face of the hollow boss (3); A single punching process is performed to drill holes in the concave-convex shape (6) to form the fixing holes (17) of the airbag inner insert (1); Flip the hole to turn the concave-convex shape (6) outward to form a cylindrical body (7), the cylindrical body (7) is flush with the step (4), and the buckle part (11) and the support leg (16) of the airbag inner insert (1) are formed. The diameter of the cylinder (7) is widened to match the diameter of the hollow boss (3); Flatten the cylinder (7) and press out a crease (8) at the connection between the cylinder (7) and the step (4) to form the concave neck (12) of the airbag insert (1); The pressure ribs are applied radially to the cylinder (7) to form the positioning ribs (13) of the airbag inner insert (1); Bending, bending the support leg (16) to a set angle; Secondary punching: punch the mounting hole (15) of the airbag inner insert (1) on the flange edge (14); The material is dropped, and the connection between the flange edge (14) and the galvanized steel strip (2) is cut off, allowing the finished product to fall freely.
2. The airbag insert manufacturing process according to claim 1, wherein, The process of punching out multiple workpiece positions (21) along the length of the galvanized steel strip (2) includes: First, punch out a plurality of equidistant positioning holes (22) along the length of the galvanized steel strip (2). The workpiece material position (21) is set between two adjacent positioning holes (22). Then, punch out a gap (23) on the galvanized steel strip (2) to separate two adjacent workpiece material positions (21).
3. The airbag insert processing technology according to claim 1, further comprising, after the shaping step and before the bottom punching step: Imprinting: an indentation (5) is pressed into the end face of the hollow boss (3) to be used for punching positioning.
4. The airbag insert manufacturing process according to claim 3, wherein, The indentation (5) does not extend beyond the edge of the embossed shape (6).
5. The airbag insert manufacturing process according to claim 1, wherein, The mounting hole (15) punched out of the airbag insert (1) includes: The mounting holes (15) that are evenly distributed are punched in stages, and two adjacent mounting holes (15) are staggered in formation.