A pressing mold and pressing method for an automotive airbag packaging box.

Abstract

This invention discloses a press-fit mold for an automotive airbag packaging box, including a lower mold for providing support and positioning for the packaging box, and an upper mold that cooperates with the lower mold and applies pressure to the packaging box. The upper mold is further provided with a pushing body for expanding the rotation radius of the upper shell of the packaging box and causing the upper shell of the packaging box to extend outward as a whole. The invention also discloses its press-fitting method. This invention effectively solves the problems of the upper shell's clips entering the inner wall of the lower shell and the upper shell's clips not entering the lower shell's slots. Furthermore, this invention has a simple structure and is easy to operate, achieving precise press-fitting of the automotive airbag packaging box, greatly improving the yield rate, and simultaneously reducing labor intensity.

Description

Technical Field

[0001] This invention relates to a pressing mold for a packaging box, and more particularly to a pressing mold for an automotive airbag packaging box. This invention also relates to a method for pressing an automotive airbag packaging box using a pressing mold, belonging to the field of pressing mold technology. Background Technology

[0002] The car airbag system is very important, as it can provide effective collision protection for occupants. As mentioned in the background art of utility model patent CN 212148750U, "car airbags can reduce the head injury rate by 25% and the facial injury rate by about 80%".

[0003] Figure 1 This is a schematic diagram of the structure of an automotive airbag system.

[0004] like Figure 1 As shown: The automotive airbag system includes an airbag 1 and a packaging box 2 that covers the airbag 1. The packaging box 2 includes an upper shell 21 and a lower shell 22, wherein one end of the upper shell 21 and the lower shell 22 is rotatably connected. After the airbag 1 is placed into the cavity formed by the upper shell 21 and the lower shell 22, the other mating section of the upper shell 21 and the lower shell 22 is pressed together to encapsulate the airbag 1. The pressing end of the upper shell 21 is provided with a buckle 211, while the pressing end of the lower shell 22 has an inner wall 221 and an outer wall 222. The inner wall 221 is usually higher than the outer wall 222, and a groove 223 is formed between the inner wall 221 and the outer wall 222. The buckle 211 is engaged in the groove 223 under the action of external force.

[0005] Figure 2 This is a schematic diagram of the structure of a press-fitting mold in the prior art.

[0006] like Figure 2 As shown: In the prior art, the press mold includes an upper mold 3 and a lower mold 4. One side of the upper mold 3 and the lower mold 4 are pivotally connected by a rotation center 5. The top of the upper mold 3 is also provided with a handle 6. The lower mold 4 is horizontally set and its surface is provided with a cavity for supporting and positioning the packaging box. After the packaging box 2 containing the airbag 1 is placed on the lower mold 4, the handle 6 is manually pulled to press the upper mold 3 down, thereby pressing the buckle 211 of the upper shell 21 of the packaging box 2 into the slot 223 of the lower shell 22.

[0007] Figure 3 This is a diagram illustrating the problem states that may occur during the pressing process. Figure 1 ; Figure 4 This is a diagram illustrating the problem states that may occur during the pressing process. Figure 2 .

[0008] like Figure 3As shown: The buckle 211 of the upper shell 21 of the packaging box 2 is easily embedded in the inner wall 221 of the lower shell 22, causing the buckle 211 to fail to engage with the slot 223 of the lower shell 22.

[0009] And such Figure 4 As shown: The buckle 211 of the upper shell 21 of the packaging box 2 cannot enter the slot 223 of the lower shell 22, but extends into the outside of the outer wall 222 of the lower shell 22. It requires manual assistance to align with the slot in order to press it in accurately. Summary of the Invention

[0010] To address the shortcomings of existing technologies, this invention provides a simple, easy-to-operate, and precise pressing mold for automotive airbag packaging boxes.

[0011] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0012] A pressing mold for an automotive airbag packaging box includes a lower mold for providing support and positioning for the packaging box, and an upper mold that cooperates with the lower mold and applies pressure to the packaging box. The upper mold is further provided with a pusher for expanding the rotation radius of the upper shell of the packaging box and causing the upper shell of the packaging box to extend outward as a whole.

[0013] Furthermore, the contact surface between the aforementioned pushing body and the upper shell is an inclined surface, so that after making full contact with the upper shell, it can provide sufficient force to cause the upper shell to extend outward, that is, to cause the buckle end of the upper shell to extend to the outer side of the inner wall of the lower shell, effectively avoiding the problem that the buckle is easily embedded in the inner wall of the lower shell. That is, under the action of the pushing body, the upper shell deforms, and the buckle rotation radius of the upper shell increases, thereby smoothly bypassing the upper edge of the inner wall of the lower shell.

[0014] More preferably, the aforementioned pressing body can be a wedge-shaped block, and multiple sets of the wedge-shaped blocks are provided to achieve uniform force distribution in the width direction of the upper housing.

[0015] Furthermore, the lower mold is also provided with a guide body for guiding the buckle of the upper housing of the packaging box into the slot of the lower housing of the packaging box, so as to solve the problem that the buckle of the upper housing cannot enter the slot of the lower housing, but extends into the outside of the outer wall of the lower housing, requiring manual assistance to align the slot for accurate pressing.

[0016] To further ensure the guiding effect, the lower edge of the guide is close to the slot of the lower shell of the packaging box, that is, the guide can accurately position and guide the buckle and introduce it into the slot.

[0017] More preferably, the guiding effect is best when the guide body forms a 45° angle with the outer wall of the lower housing of the packaging box.

[0018] Of course, there are multiple sets of guide bodies and buckles, that is, a guide body is set for each buckle.

[0019] In addition, to further enhance the pressing effect, the lower mold is inclined to support and position the surface of the packaging box.

[0020] The present invention also aims to provide a method for pressing an automotive airbag packaging box using the above-mentioned pressing mold, which mainly includes the following steps:

[0021] (1) Place the car airbag packaging box on the lower mold of the pressing mold;

[0022] (2) Pull and rotate the upper mold relative to the lower mold to press the packaging box. The buckle of the upper shell of the packaging box moves into the slot of the lower shell. The pusher pushes the upper shell of the packaging box in sync, causing the upper shell to extend outward to the outer side of the inner wall of the lower shell.

[0023] Of course, going a step further, during the process of the buckle moving into the slot of the lower housing, the step also includes using a guide on the lower mold to guide the buckle into the slot of the lower housing.

[0024] Beneficial effects

[0025] Compared with existing technologies, this invention has the following advantages: By adding a pressing body to the upper mold, the upper shell deforms, increasing the rotation radius of the upper shell's latch, thus allowing it to smoothly bypass the upper edge of the lower shell's inner wall and effectively solving the problem of the upper shell's latch entering the lower shell's inner wall. Furthermore, by adding a guide block to the lower mold, the latch is forcibly guided into the lower shell's slot, effectively solving the problem of the upper shell's latch not entering the lower shell's slot. This invention has a simple structure and is easy to operate, achieving precise pressing of automotive airbag packaging boxes, greatly improving the yield rate, and simultaneously reducing labor intensity. Attached Figure Description

[0026] Figure 1 A schematic diagram of the structure of an automotive airbag system;

[0027] Figure 2 This is a schematic diagram of the structure of a press-fitting mold in the prior art;

[0028] Figure 3 This is a diagram illustrating the problem states that may occur during the pressing process. Figure 1 ;

[0029] Figure 4 This is a diagram illustrating the problem states that may occur during the pressing process. Figure 2 ;

[0030] Figure 5 This is a schematic diagram of a structure according to an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram showing the interaction state of the pusher and the packaging box according to the present invention;

[0032] Figure 7 This is a schematic diagram of the structural state of the guide body described in this invention. Figure 1 ;

[0033] Figure 8 Schematic diagram of the structural state of the guide body described in this invention Figure 2 .

[0034] The main reference numerals in the figure have the following meanings: Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of this invention, it should be noted that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are used only for the convenience of describing the invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the invention.

[0039] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] Figure 5 This is a schematic diagram of a structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram showing the interaction state of the pusher and the packaging box described in this invention.

[0041] like Figure 5 and Figure 6 As shown: The pressing mold for an automotive airbag packaging box includes an upper mold 3 and a lower mold 4, wherein:

[0042] The upper mold 3 has two sets of pressing bodies 7 on the pressing surface near the rotation center 5, which respectively exert a pushing force on the left and right sides (width direction) of the upper shell 21. In this embodiment, the pressing body 7 is a wedge-shaped block (an inverted cone, in which the surface in contact with the upper shell 21 is an inclined surface). Of course, the pressing body 7 can also be other shapes, as long as it can ensure that it can generate a radial force on the upper shell 21 of the packaging box 2 (a force that causes the upper shell 21 to extend outward, so that the rotation radius of the upper shell 21 of the packaging box 2 increases, and the buckle 211 can smoothly pass around the upper edge of the inner wall 221 of the lower shell 22).

[0043] Figure 7 This is a schematic diagram of the structural state of the guide body described in this invention. Figure 1 ; Figure 8 Schematic diagram of the structural state of the guide body described in this invention Figure 2 .

[0044] like Figure 7 and Figure 8 As shown, the lower mold 4 is also provided with a guide body 8 for guiding the buckles 211 of the upper shell 21 of the packaging box 2 into the slots 223 of the lower shell 22 of the packaging box 2. In this embodiment, since there are ten sets of buckles on the upper shell 21, there are also ten sets of guide bodies 8, which are evenly arranged to match the trajectory of the slots 223 of the lower shell 22. In order to further ensure the guiding effect, the lower edge of the guide body 8 is close to the slots 223 of the lower shell 22 of the packaging box 2, that is, the guide body 8 can accurately position and guide the buckles 211 and introduce them into the slots 223. In this embodiment, the guiding effect is best when the guide body 8 forms a 45° angle with the outer wall of the lower shell 22 of the packaging box 2.

[0045] In order to further enhance the pressing effect, in this embodiment, the lower mold 4 is used to support and position the surface of the packaging box 2 with an inclined setting.

[0046] The pressing method of the present invention is as follows: First, the car airbag (airbag 1) is placed in the packaging box 2, and then the packaging box 2 is placed on the lower mold 4 of the pressing mold; second, the handle 6 on the upper mold 3 is pulled to cause the upper mold 3 to move towards the lower mold 4, that is, the upper mold 3 rotates towards the lower mold 4 through the rotation center 5. During the process of the upper mold 3 contacting the upper shell 21 of the packaging box 2, the pushing body 7 on the upper mold 3 provides an outward extending force to the upper shell 21, that is, the buckle 211 not only moves downward, but also moves outward, that is, the movement radius of the buckle 211 increases (the packaging box 2 is a plastic product with a certain degree of extensibility. Under the action of force, the radius relative to the rotation center of the packaging box 2 itself can increase), thereby smoothly bypassing the upper edge of the inner wall 221 of the lower shell 22. In this embodiment, the height of the inner wall 221 of the lower housing 22 is higher than that of the outer wall 222, and a slot 223 is formed between the inner wall 221 and the outer wall 222. As the buckle 211 moves downward on the outer side of the inner wall 221, the guide body 8 on the lower mold 4, based on its position, forcibly guides the buckle 211 into the slot 223 of the lower housing 22, thereby completing the precise pressing of the packaging box 2.

[0047] The foregoing description illustrates the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims, defined by the appended claims and their equivalents.

Claims

1. A press tool for an automotive airbag module package, comprising a lower tool for providing support and positioning for the package, and an upper tool cooperating with the lower tool and providing pressure to the package, characterized in that: The upper mold is also provided with a pusher for expanding the rotation radius of the upper shell of the packaging box and causing the upper shell of the packaging box to extend outward as a whole.

2. The press tooling mold for automotive airbag module packaging boxes of claim 1, wherein: The contact surface between the pusher and the upper shell is an inclined surface.

3. The pressing mold for the automotive airbag packaging box according to claim 1 or 2, characterized in that: The pushing body is a wedge-shaped block, and multiple sets of the wedge-shaped blocks are provided.

4. The pressing mold for the automotive airbag packaging box according to claim 1, characterized in that: The lower mold is also provided with a guide body for guiding the buckle of the upper shell of the packaging box into the slot of the lower shell of the packaging box.

5. The pressing mold for the automotive airbag packaging box according to claim 4, characterized in that: The lower edge of the guide is close to the slot of the lower housing of the packaging box.

6. The pressing mold for the automotive airbag packaging box according to claim 4 or 5, characterized in that: The guide body forms a 45° angle with the outer wall of the lower housing of the packaging box.

7. The pressing mold for the automotive airbag packaging box according to claim 4 or 5, characterized in that: The guide body and the buckle are provided in multiple sets.

8. The pressing mold for the automotive airbag packaging box according to claim 1, characterized in that: The lower mold is used to support and position the inclined surface of the packaging box.

9. A method for press-fitting an automotive airbag packaging box using a press-fitting mold according to any one of claims 1-8, characterized in that, Includes the following steps: (1) Place the car airbag packaging box on the lower mold of the pressing mold; (2) Pull and rotate the upper mold relative to the lower mold to press the packaging box. The buckle of the upper shell of the packaging box moves into the slot of the lower shell. The pusher pushes the upper shell of the packaging box synchronously, causing the upper shell to extend outward to the outer side of the inner wall of the lower shell.

10. The method according to claim 9, characterized in that, During the movement of the buckle into the slot of the lower housing, the process also includes a step of guiding the buckle into the slot of the lower housing using a guide on the lower mold.

Images