Fixture for milling and weakening safety airbag instrument panel and safety airbag instrument panel processed by the fixture

Abstract

The present invention relates to a weakening plate for milling and weakening an airbag instrument panel, comprising: a fixed mold, the top of the fixed mold comprising a plurality of hollow areas, and a movable mold, the movable mold comprising a plurality of embedded parts complementary to the plurality of hollow areas of the fixed mold, the movable mold being movable between a raised position and a retracted position, in which the upper surfaces of the plurality of embedded parts of the movable mold are flush with the upper surface of the top of the fixed mold to form a complete plane; in the retracted position, the plurality of embedded parts of the movable mold are retracted downward, so that the upper surfaces of the plurality of embedded parts of the movable mold are offset downward relative to the upper surface of the top of the fixed mold and form a drop. The weakening plate can be used for milling and weakening soft instrument panels and hard instrument panels respectively by adjusting the drop. The present invention also relates to a fixture comprising such a weakening plate, and an airbag instrument panel processed by such a fixture.

Description

Technical Field

[0001] The invention relates to a weakened plate for milling a weakened safety airbag instrument panel, a fixture for milling a weakened safety airbag instrument panel, and a safety airbag instrument panel processed by the fixture for milling a weakened safety airbag instrument panel. Background Art

[0002] Most vehicles are equipped with airbags to protect passengers in the event of a traffic accident.

[0003] Usually, the airbag is installed under the dashboard through a bracket and other components, and is covered by an airbag cover. The dashboard is divided into a display airbag dashboard and a seamless airbag dashboard based on whether there is a visible mounting line on the dashboard airbag area.

[0004] The seamless airbag dashboard has no visible mounting lines and can ensure the normal deployment of the airbag. It combines safety, aesthetics and comfort, and is therefore widely used in various types of transportation.

[0005] Seamless airbag dashboards are divided into hard dashboards and soft dashboards, which are suitable for different grades of vehicles, so their production processes and required production equipment are also different.

[0006] Specifically, the processing technology of the weakening line of the airbag area of ​​the airbag instrument panel mainly includes a milling weakening process. In the prior art, two different sets of fixtures and two different sets of weakening plates are required to process the same model of hard instrument panel and soft instrument panel for milling weakening, so the production cost is high and the applicability is poor. Summary of the invention

[0007] It is noteworthy that the purpose of the present invention is to overcome the defect that two different sets of fixtures and two different sets of weakening plates are required to perform milling weakening on the same model of hard instrument panel and soft instrument panel in the prior art as already found in the background art.

[0008] To this end, the present invention proposes, on the one hand, a weakened plate for milling a weakened airbag instrument panel, comprising:

[0009] - a fixed mold, wherein the top of the fixed mold comprises a plurality of hollow areas, and the plurality of hollow areas are separated by a plurality of bridge areas,

[0010] - a movable mold, which is arranged below the fixed mold and comprises a plurality of embedded parts complementary to the plurality of hollow areas of the fixed mold, and the movable mold can move between a raised position and a retracted position, wherein:

[0011] In the raised position, the upper surfaces of the multiple embedded parts of the movable mold are flush with the upper surface of the top of the fixed mold to form a complete plane;

[0012] In the retracted position, the multiple embedded parts of the movable mold retract downward, so that the upper surfaces of the multiple embedded parts of the movable mold are offset downward relative to the upper surface of the top of the fixed mold to form a drop.

[0013] In the weakening plate for milling and weakening the airbag instrument panel according to the present invention, by adjusting the drop between the upper surface of the top of the fixed mold and the upper surface of the embedded part of the movable mold, it can be used to process different instrument panel surfaces. In the first case, when the drop does not exist, that is, the upper surface of the top of the fixed mold is flush with the upper surface of the embedded part of the movable mold and forms a complete plane, it can be used for milling and weakening the soft instrument panel, and the surface of the soft instrument panel after milling and weakening is smooth. In the second case, when the drop exists, that is, the upper surface of the top of the fixed mold and the upper surface of the embedded part of the movable mold are staggered by a certain distance and form a drop, it can be used for milling and weakening the hard instrument panel, and the surface of the hard instrument panel after milling and weakening is a grid-like pattern, and the grid-like pattern can be different according to the layout of the hollow area and the bridge area in the fixed mold. In this way, the function of using the same set of fixtures to mill and weaken two different textures of instrument panels is realized, which improves the applicability of the weakening plate, and at the same time can save the manufacturing cost of a set of weakening plates, with high economic benefits.

[0014] According to other aspects of the present invention, in the weakened plate for milling and weakening the airbag instrument panel, the following features may be used alone or in combination:

[0015] In one example, each embedded portion of the movable mold has the same height, and the same height of each embedded portion is conducive to making the surface of the instrument panel smooth after milling and weakening without defects of local protrusions and local collapses.

[0016] In one example, at least one of the multiple embedded parts of the movable mold has a vacuum hole. When the weakened plate is used to process the instrument panel to be weakened by milling, the instrument panel to be weakened by milling needs to be positioned in the form of vacuum. The above-mentioned vacuum hole is conducive to firmly fixing the instrument panel to be weakened by milling in the positioning position, so more vacuum holes will be more conducive to the positioning of the instrument panel to be weakened by milling.

[0017] In one example, a sealing groove is formed around the upper surface of the fixed mold.

[0018] In one example, the drop is between 0.25 mm and 0.75 mm.

[0019] In one example, the drop is 0.5 mm.

[0020] On the other hand, the present invention proposes a fixture for milling and weakening the airbag instrument panel. The fixture can be used for milling and weakening the hard instrument panel and the soft instrument panel respectively by automatically adjusting its own structure, which greatly improves the working range of the fixture for milling and weakening the airbag instrument panel, has strong applicability, and effectively saves the research and development and manufacturing costs of another set of fixtures, has high economic benefits, and has a simple structure and convenient maintenance.

[0021] The fixture for milling and weakening the airbag instrument panel according to the present invention comprises:

[0022] - a base to support the weakened plate, and

[0023] - a driving element, used to connect the movable mold to control the movement of the movable mold relative to the fixed mold, so as to form a height difference between the upper surface of the top of the fixed mold and the upper surface of the embedded part of the movable mold.

[0024] By controlling the movement of the movable mold through the driving element, the height difference between the upper surface of the top of the fixed mold and the upper surface of the embedded part of the movable mold can be adjusted. When the height difference does not exist, that is, the upper surface of the top of the fixed mold and the upper surface of the embedded part of the movable mold are in the same plane, it can be used to mill and weaken the soft instrument panel, and the surface of the soft instrument panel after milling and weakening is smooth. When the height difference exists, that is, the upper surface of the top of the fixed mold and the upper surface of the embedded part of the movable mold are offset by a certain distance, it can be used to mill and weaken the hard instrument panel, and the surface of the hard instrument panel after milling and weakening is a grid-like pattern. In this way, the function of using the same set of fixtures to mill and weaken two instrument panels of different textures is achieved, which improves the applicability of the fixture and can save the manufacturing cost of a set of fixtures at the same time, with high economic benefits.

[0025] According to other aspects of the present invention, in the above-mentioned fixture for milling a weakened airbag instrument panel, the following features may also be used alone or in combination:

[0026] In one example, the driving element is a cylinder, which includes:

[0027] - a cylinder disposed outside the base, and

[0028] - A piston rod connected to the movable mold. The cylinder is a standardized component. Using the cylinder as a driving component is beneficial to the maintenance and replacement of the equipment.

[0029] In one example, the base includes a hole, and the piston rod is connected to the movable mold through the hole of the base.

[0030] In one example, a sealing ring is provided in the hole of the base, and the driving element, especially the piston rod of the cylinder, can pass through the sealing ring and enter the cavity of the fixture. When the fixture is used to process the instrument panel to be weakened by milling, it is necessary to evacuate and fix the instrument panel to be weakened by milling so as to firmly fix the instrument panel to be weakened by milling in the positioning position. Therefore, the hole equipped with the sealing ring is more conducive to preventing gas infiltration.

[0031] In one example, the fixture for milling the weakened airbag instrument panel further includes a stopper, which is disposed on the inner wall of the fixed mold to limit the moving range of the movable mold to prevent the movable mold from excessively moving and disengaging from the fixed mold.

[0032] The fixture for milling and weakening the airbag instrument panel of the present invention can move the height of the movable mold relative to the fixed mold through a driving element, especially a cylinder, to adjust the type of instrument panel to be milled and weakened, so that it can be used to mill and weaken hard instrument panels and soft instrument panels of the same model, thereby saving the design and manufacturing costs of a set of fixtures.

[0033] On the other hand, the present invention further provides an airbag instrument panel, which is manufactured by any of the above-mentioned embodiments of the fixture for milling and weakening the airbag instrument panel.

[0034] In one example, the fabricated airbag instrument panel is a hard instrument panel.

[0035] In one example, the fabricated airbag instrument panel is a soft instrument panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] It should be understood that in the present invention, except for obvious contradictory or incompatible situations, all features, variations and / or specific embodiments can be combined in various combinations.

[0037] Other features and advantages of the present invention will become apparent from the following non-limiting examples, taken in conjunction with the accompanying drawings, in which:

[0038] - Figure 1 The invention discloses a fixture for milling a weakened airbag instrument panel, which is equipped with a weakened plate for milling a weakened airbag instrument panel according to the invention. In this embodiment, by adjusting the height of the movable mold relative to the fixed mold, the fixture can be used to process soft instrument panels and hard instrument panels respectively. DETAILED DESCRIPTION

[0039] It should be understood that the above drawings are not true to scale, but are only simplified diagrams for illustrating various preferred features of the basic principles of the present invention. The design features disclosed in the present invention, such as size, direction, positioning and shape, are determined according to specific applications and use environments.

[0040] The present invention will be described in detail below in conjunction with the embodiments and the accompanying drawings. In these drawings, the same reference numerals refer to the same or equivalent elements of the present invention in all drawings.

[0041] In the present invention, the term "longitudinal" refers to Figure 1 The direction indicated by the arrow X in the figure, the term "lateral" means Figure 1 The direction indicated by the arrow Y in the figure, the term "vertical direction" means Figure 1 The direction indicated by the arrow Z.

[0042] In the present invention, the term "on" refers to along Figure 1 The direction indicated by the arrow Z in the middle is "down" along Figure 1 The opposite direction to that indicated by the arrow Z.

[0043] The fixture of the present invention is particularly a vacuum adsorption milling fixture, which is used for vacuum adsorption of the instrument panel to be milled and weakened. In the prior art, each vacuum adsorption milling fixture can only be used to process either a hard instrument panel or a soft instrument panel. The fixture of the embodiment of the present invention can be used to process both hard and soft instrument panels, and is a multifunctional fixture.

[0044] Reference Figure 1 , shows a fixture for milling a weakened airbag instrument panel according to an embodiment of the present invention, which mainly includes a weakened plate, a base 1 and a driving element 4 according to an embodiment of the present invention.

[0045] The weakened plate according to the embodiment of the present invention includes a fixed mold 2 and a movable mold 3 .

[0046] The fixed mold 2 is arranged above the base 1, and includes a fixed mold body 21 extending along the top of the base 1 and a top 22 covering the fixed mold body 21. The fixed mold body 21 is, for example, rectangular, and includes four outer walls 211 and four inner walls 212 opposite to the four outer walls 211. There is a wall thickness between the outer wall 211 and the inner wall 212. The top 22 includes an upper surface 221 and a lower surface 222 opposite to the upper surface 221, and there is a certain thickness between the upper surface 221 and the lower surface 222.

[0047] A cavity 5 is formed between the inner wall 212 of the fixed mold 2 and the lower surface 222 of its top 22 and the base 1. The cavity 5 is used to form a vacuum cavity, for example, by a vacuum pump, so as to provide vacuum adsorption force for the instrument panel to be milled.

[0048] The top 22 of the fixed mold 2 includes a plurality of hollow areas 223 that penetrate through the upper surface 221 and the lower surface 222 thereof, and the hollow areas 223 are separated by bridge areas 224. The hollow areas 223 are used to form a grid-like pattern on the surface when the hard instrument panel is milled and weakened, and the bridge areas 224 are used to form invisible weakening line areas on the surface when the hard instrument panel is milled and weakened.

[0049] In one example, the hollow areas 223 may have different sizes and shapes.

[0050] In one example, the hollow areas 233 are arranged along a straight line.

[0051] In one example, the hollow areas 233 are arranged in a staggered manner.

[0052] In one example, the bridge regions 224 may have different sizes and shapes.

[0053] In one example, the bridge regions 224 are arranged along a straight line.

[0054] In one example, the bridge regions 224 are staggered.

[0055] The movable mold 3 includes a movable mold body 31 and a plurality of embedded parts 32 extending from the movable mold body 31. Preferably, the plurality of embedded parts 32 have the same extension height. The movable mold body 31 is disposed in a cavity 5 formed between the inner wall 212 of the fixed mold body 21 of the fixed mold 2 and the lower surface 222 of the top 22 thereof and the base 1, and the plurality of embedded parts 32 are embedded in the hollow areas 223 of the top 22 of the fixed mold 2.

[0056] Specifically, the multiple embedded parts 32 of the movable mold 3 are complementary in shape to the hollow areas 223 of the fixed mold 2. When the embedded parts 32 of the movable mold 3 are embedded in the hollow areas 223 of the fixed mold 2, the embedded parts 32 of the movable mold 3 can be driven to move up and down in the hollow areas 223 of the fixed mold 2 by controlling the movement of the movable mold 3 relative to the fixed mold 2 in the vertical direction Z.

[0057] More specifically, the movable mold 3 is configured to be able to move between a raised position and a retracted position. When the movable mold 3 moves upward to the raised position along the vertical direction Z relative to the fixed mold 2, the upper surface 33 of the embedded portion 32 of the movable mold 3 is flush with the upper surface 221 of the top 22 of the fixed mold 2 to form a complete plane. In this case, it is suitable for milling the soft instrument panel, and the surface of the soft instrument panel after milling is completed has a smooth surface pattern.

[0058] When the movable mold 3 moves downward to the retracted position along the vertical direction Z relative to the fixed mold 2, the upper surface 33 of the embedded portion 32 of the movable mold 3 is offset downward relative to the upper surface 221 of the top 22 of the fixed mold 2 and forms a certain drop h. In this case, it is suitable for milling to weaken the hard instrument panel. After milling, the surface of the hard instrument panel presents a grid-like pattern.

[0059] In the present invention, the height h ranges from 0.25 mm to 0.75 mm, preferably 0.5 mm.

[0060] When the above-mentioned weakened plate is applied to the fixture for milling weakened airbag instrument panel according to the present invention, the movement of the movable mold 3 in the vertical direction Z is limited by the stopper 6 installed in the cavity 5. For example, the stopper 6 is installed on the inner wall 212 of the fixed mold body 21 of the fixed mold 2, for example, by bolts or screws or a combination of bolts and screws, so that the movement of the movable mold 3 is limited between the lower surface 222 of the top 22 of the fixed mold 2 and the upper surface 61 of the stopper 6. Preferably, in order to increase the stability of the stopper 6, the lower surface 62 of the stopper 6 is supported on the base 1. Optionally, a plurality of stoppers 6 can be installed in the cavity 5 to disperse the pressure on each stopper 6 when blocking the movable mold 3.

[0061] The base 1 has a substantially rectangular shape and a certain thickness, and is used to support the weakened plate, especially the fixed mold 2 .

[0062] In such Figure 1 In the illustrated embodiment, the driving element 4 is a cylinder, a cylinder body 41 of the cylinder is disposed below the base 1, and a piston rod 42 of the cylinder can enter the cavity 5 through a hole 11 in the base 1 and is connected to the movable mold body 31 of the movable mold 3, so that the cylinder can control the movement of the movable mold 3 in the cavity 5 by extending or contracting the piston rod 42. Specifically, when the piston rod 42 is extended, the movable mold 3 is lifted to the lifting position, and when the piston rod 42 is contracted, the movable mold 3 is lowered to the retracted position.

[0063] Preferably, a sealing ring 12 is provided in the hole 11 in the base 1 to ensure that external gas does not penetrate into the vacuum cavity 5 when the instrument panel to be weakened by milling is vacuum-adsorbed.

[0064] Preferably, the movable mold 3 is connected to multiple cylinders, especially evenly and dispersedly connected to multiple cylinders, so that each cylinder evenly applies thrust to the entire movable mold 3, so as to avoid the risk of severe local friction and damage between the movable mold 3 and the fixed mold 2 due to uneven thrust application.

[0065] In one example, each embedded portion 32 of the movable mold 3 also includes a vacuum hole 35 that runs through the entire embedded portion 32. When the fixture is used for milling and weakening processing, these vacuum holes 35 can firmly vacuum adsorb the instrument panel to be milled and weakened at the accurate positioning point to prevent the instrument panel to be milled and weakened from moving during processing and producing defective products.

[0066] In one example, the upper surface 221 of the top 22 of the fixed mold 2 is further provided with sealing grooves 225 around its periphery to further improve the sealing performance of the vacuum adsorption.

[0067] Another aspect of the present invention also protects a soft instrument panel produced by such a fixture for milling and weakening an airbag instrument panel.

[0068] Another aspect of the present invention also protects a hard instrument panel produced by such a fixture for milling and weakening an airbag instrument panel.

[0069] The above embodiments are only examples and do not limit the scope of the present invention. Based on this, those skilled in the art can foresee other implementations that can achieve the same function within the scope of the claims of the present invention.

[0070] Those skilled in the art will be aware of various embodiments and various variations and improvements. In particular, it should be clear that, except for obvious contradictions or incompatibilities, the above-mentioned features, variations and / or specific embodiments of the present invention can be combined with each other. All of these embodiments and variations and improvements belong to the protection scope of the present invention.

Claims

1. A fixture for milling a weakened airbag instrument panel, comprising: Base (1), A fixed mold (2), wherein the top (22) of the fixed mold (2) comprises a plurality of hollow areas (223), the plurality of hollow areas (223) are separated by a plurality of bridge areas (224), a cavity (5) is formed between the inner wall (212) of the fixed mold (2) and the lower surface (222) of the top (22) thereof and the base (1), and the cavity (5) is used to form a vacuum cavity, A movable mold (3), the movable mold (3) being arranged in the cavity (5) and comprising a plurality of embedded parts (32) complementary to the plurality of hollow areas (223) of the fixed mold (2), at least one of the plurality of embedded parts (32) of the movable mold (3) having a vacuum hole (35) penetrating the entire embedded part (32), and a driving element (4) for connecting the movable mold (3) to control the movable mold (3) to move between a raised position and a retracted position relative to the fixed mold (2); In the raised position, the upper surface (33) of the multiple embedded parts (32) of the movable mold (3) is flush with the upper surface (221) of the top (22) of the fixed mold (2), forming a complete plane; In the retracted position, the multiple embedded parts (32) of the movable mold (3) retract downward, so that the upper surface (33) of the multiple embedded parts (32) of the movable mold (3) is offset downward relative to the upper surface (221) of the top (22) of the fixed mold (2) to form a drop (h).

2. The fixture for milling and weakening the airbag instrument panel according to claim 1, characterized in that: The driving element (4) is a cylinder, which comprises: a cylinder body (41) disposed outside the base (1), and A piston rod (42) is connected to the movable mold (3).

3. The fixture for milling and weakening the airbag instrument panel according to claim 2, characterized in that: The base (1) comprises a hole (11), and the piston rod (42) is connected to the movable mold (3) through the hole (11) of the base (1).

4. The fixture for milling and weakening the airbag instrument panel according to claim 3, characterized in that: A sealing ring (12) is provided in the hole (11) of the base (1).

5. The fixture for milling and weakening the airbag instrument panel according to claim 1, characterized in that: It also includes a stopper (6), wherein the stopper (6) is fixedly connected to the inner wall (212) of the fixed mold (2).

6. The fixture for milling and weakening the airbag instrument panel according to claim 1, characterized in that: Each embedding portion (32) of the movable mold (3) has the same height.

7. The fixture for milling and weakening the airbag instrument panel according to claim 1, characterized in that: The upper surface (221) of the fixed mold (2) is provided with sealing grooves (225) around its periphery.

8. The fixture for milling and weakening the airbag instrument panel according to claim 1, characterized in that: The drop (h) is between 0.25 mm and 0.75 mm.

9. The fixture for milling and weakening the airbag instrument panel according to claim 8, characterized in that: The drop (h) is 0.5 mm.

10. A safety airbag instrument panel, manufactured by using the fixture for milling and weakening a safety airbag instrument panel according to any one of claims 1 to 9.

Images