Preheating tool for covering upper cover plate of instrument panel

Abstract

The utility model relates to the technical field of automobile part production, in particular to a preheating tool for covering an upper cover plate of an instrument board, which comprises a base (1), a heating device (2), a support seat (5), an oil inlet pipe (6), an oil outlet pipe (3), an oil inlet joint (7), an oil outlet joint (8) and a support column (9). The instrument board and the safety air bag cover plate area reach the temperature suitable for glue activation, the quality of the 3D MESH coated instrument board is ensured, the effect is safe and reliable, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts production, in particular to a preheating tool for covering an upper cover plate of an instrument panel. Background Art

[0002] In the automotive interior manufacturing industry, 3D mesh-wrapped instrument panels are popular among consumers for their excellent tactile feel. The production process involves manually pre-wrapping the instrument panel, placing it on a hot press jig, and heating the entire panel to a glue activation temperature of 80°C to ensure good peel strength and meet practical performance standards. Typically, the wall thickness of the instrument panel cover, excluding the airbag frame area, is 2.5mm, and the hot press jig only requires 100 seconds to heat. However, the airbag frame area on the instrument panel has a wall thickness of 4-5mm. Due to this thickness, the hot press jig heats the entire panel more slowly. While the temperature of the airbag cover area outside the instrument panel reaches the glue activation temperature of 80°C, the airbag cover area is only 60°C. To achieve the glue activation temperature for the airbag cover area, increasing the heating time or raising the mold temperature can be the only way to achieve this. However, if the heating time is too long or the heating temperature is too high, there is a risk of glue deactivation, making its actual performance unqualified, resulting in material being carried during the airbag deployment process during actual use, causing harm to the driver and passengers. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the present invention provides a preheating tool for covering an instrument panel upper cover to solve the above technical problems.

[0004] The technical solution adopted by this utility model is:

[0005] The top end of the oil pump stretches out the side of the oil drain plug, and the bottom end of the oil pump stretches out the side of the oil drain plug, and the bottom end of the oil drain plug is connected with the oil drain plug, and the bottom end of the oil drain plug is connected with the oil drain plug, and the bottom end of the oil drain plug is connected with the oil drain plug.

[0006] The preheating tool for covering the upper cover of the instrument panel is characterized in that a number of mounting holes with a spacing of 50 mm and a diameter of 7 mm are provided on the base.

[0007] The preheating tool for covering the upper cover of the instrument panel is characterized in that handles are installed at the four corners of the base.

[0008] The preheating tool for covering the upper cover of the instrument panel is characterized in that there are at least two support columns.

[0009] The preheating tool for covering the upper cover of the instrument panel is characterized in that it also includes a guide plate, which has a guide hole and is fixed to the middle of the support column between the base and the heating device. The oil inlet pipe and the oil outlet pipe both pass through the guide hole of the guide plate.

[0010] The utility model discloses a preheating tool for covering the upper cover of the instrument panel, which is scientifically designed and rationally structured, and can ensure that the instrument panel and the airbag cover area reach a suitable glue activation temperature, thereby ensuring the quality of the 3D MESH covered instrument panel, and is safe, reliable and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0012] Figure 1 It is a schematic diagram of the car dashboard and airbag cover;

[0013] Figure 2 This is a schematic diagram of the airbag cover;

[0014] Figure 3 for Figure 2 AA cross-sectional view of the airbag cover;

[0015] Figure 4 This is a schematic diagram of the preheating tooling for covering the upper cover of the instrument panel in the present invention;

[0016] Figure 5 This is a schematic diagram of the use of the new preheating tool for covering the upper cover of the instrument panel;

[0017] Figure 6 This is a three-dimensional diagram of the heating device and oil pipe connection;

[0018] Figure 7 is a schematic diagram of a heating device;

[0019] Figure 8 for Figure 7 A schematic cross-sectional view of a heating device;

[0020] In the figure: 1-base; 11-support structure; 12-handle; 13-mounting hole; 2-heating device; 21-heating cover; 22-heating block; 23-oil circuit; 24-connecting nozzle; 3-oil outlet pipe; 4-guide plate; 5-support seat; 6-oil inlet pipe; 7-oil inlet connector; 8-oil outlet connector; 9-support column; P-instrument panel; Q-airbag cover; Pd-thickness one; Qd-thickness two. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described below are only used to explain the present invention. In these descriptions, it is important to note that keywords such as "heating block," "heating cover," "oil nozzle," "circulating oil circuit," "airbag cover and reinforcement frame," etc. are only used to facilitate the description of the present invention and simplify the description, and therefore should not be understood as limiting the present invention.

[0022] The 3D MESH covered instrument panel heated by the utility model is as follows Figure 1 As shown, it includes an instrument panel P body and an airbag cover Q fixed as one. Figure 1 The structure of its back is shown, which helps to understand Figure 5 The utility model is shown in the use state. Figure 2 and Figure 3 The instrument panel P and the airbag cover Q are shown in FIG. 1 . The airbag cover Q is provided with a structural reinforcement frame. In this embodiment, the instrument panel P has a thickness of 2.5 mm and the airbag cover Q has a thickness of 5 mm. Figure 4 and Figure 6 As shown, the preheating tool for covering the instrument panel upper cover of the present invention includes a base 1, a heating device 2, a guide plate 4, a support base 5, an oil inlet pipe 6, an oil outlet pipe 3, an oil inlet connector 7, an oil outlet connector 8, and a support column 9. In this embodiment, the base 1 is provided with mounting holes 13 with a spacing of 50mm and a diameter of 7mm for mounting a support structure 11. By adjusting the position of the support structure 11 in different mounting holes 13, it can support different instrument panels P and airbag covers Q during use. Handles 11 are installed at the four corners of the base 1 for easy lifting. Figure 5 As shown, the bottom end of the support column 9 is fixedly connected to the right side of the base 1. In this embodiment, at least two support columns 9 are installed. The guide plate 4 has a guide hole and is fixed to the middle of the support column 9. The top end of the support column 9 is fixed with the heating device 2, which is located above the guide plate 4. Figure 6 、 Figure 7 As shown, the heating device 2 is provided with a heating cover 21 and a heating block 22 fixedly connected together, see Figure 8As shown, the heating block 22 has an internal oil circuit 23. Each oil circuit 23 has a connecting nozzle 24 extending outside the heating block 22 on its left and right sides. The right side of the oil circuit 23 is connected to the upper end of the oil inlet pipe 6 via the connecting nozzle 24, while the left side of the oil circuit 23 is connected to the upper end of the oil outlet pipe 3 via the connecting nozzle 24. When in use, oil can flow from right to left in the oil circuit 23. The support base 5 is fixed to the base 1 and is fixedly mounted with a hollow oil inlet connector 7 and an oil outlet connector 8. The outlet end of the oil inlet connector 7 on the support base 5 is connected to the lower end of the oil inlet pipe 6, while the inlet end of the oil outlet connector 8 is connected to the lower end of the oil outlet pipe 3. Both the oil inlet pipe 6 and the oil outlet pipe 3 pass through the guide hole of the guide vane 4 to control the position of the oil pipes. The inlet end of the oil inlet connector 7 and the outlet end of the oil outlet connector 8 on the support base 5 are connected to the circulation outlet and inlet of the mold temperature controller via pipelines, respectively, forming a closed circulation oil circuit.

[0023] When the present invention is used, the mold temperature controller is pre-set to a temperature. When it is working, the heat transfer oil passes through the circulating oil circuit and sends the oil with a certain temperature into the heating block 22. The heating block 22 is made of 45 steel and has an oil circuit inside to make the heat transfer more rapid and uniform. After the hot oil heats the heating block 22, it passes through the circulating oil circuit and flows back to the mold temperature controller for reciprocating circulation to maintain the oil temperature. When the airbag cover Q area on the instrument panel P is placed on the tooling support structure 11, the airbag cover and the reinforcement frame area are completely covered by the heating cover 21, thereby reducing the heat loss from heating and assisting the heat transfer of the heating block 22. In this embodiment, the airbag cover Q of the instrument panel P is first preheated for 60 seconds, and the temperature of the airbag cover area can reach 60°C. It is then removed and placed in the next process for hot pressing. At this time, the hot pressing mold only needs to heat the entire instrument panel P for 100 seconds, and the overall temperature can reach the glue activation temperature of 80°C, which not only optimizes the production cycle but also ensures the practical performance of the airbag cover area.

[0024] The above is only one embodiment of the present invention. Those skilled in the art will readily appreciate that the present invention may have various modifications and variations, which are not exhaustively described here. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to fall within the scope of protection claimed by the present invention.

Claims

1. A preheating tool for covering an instrument panel upper cover, comprising a base (1), a heating device (2), a support seat (5), an oil inlet pipe (6), an oil outlet pipe (3), an oil inlet joint (7), an oil outlet joint (8) and a support column (9), characterized in that: The bottom end of the support column (9) is fixedly mounted on the base (1), and the top end thereof is fixedly mounted on a heating device (2). The heating device (2) is provided with a heating cover (21) and a heating block (22) fixedly connected together. An oil circuit (23) is provided inside the heating block (22). The left and right sides of the oil circuit (23) are respectively connected to connecting nozzles (24) extending out of the heating block (22). The right side of the oil circuit (23) is connected to the upper end of the oil inlet pipe (6) through the connecting nozzle (24), and the left side of the oil circuit (23) is connected to the upper end of the oil inlet pipe (6) through the connecting nozzle (24). The nozzle (24) is connected to the upper end of the oil outlet pipe (3). The support base (5) is fixed on the base (1) and is fixedly mounted with a hollow oil inlet joint (7) and an oil outlet joint (8). The outlet end of the oil inlet joint (7) is connected to the lower end of the oil inlet pipe (6), and the inlet end of the oil outlet joint (8) is connected to the lower end of the oil outlet pipe (3). The inlet end of the oil inlet joint (7) and the outlet end of the oil outlet joint (8) on the support base (5) are respectively connected to the circulation outlet and inlet of the mold temperature controller through pipelines to form a closed circulation oil circuit.

2. The preheating tool for covering the upper cover of the instrument panel according to claim 1, characterized in that: The base (1) is provided with a number of mounting holes (13) with a spacing of 50 mm and a diameter of 7 mm.

3. The preheating tool for covering the upper cover of the instrument panel according to claim 1, characterized in that: Handles (11) are installed at the four corners of the base (1).

4. The preheating tool for covering the upper cover of the instrument panel according to claim 1, characterized in that: There are at least two support columns (9).

5. The preheating tool for covering the upper cover of the instrument panel according to claim 1, characterized in that: It also includes a guide plate (4), which has a guide hole and is fixed to the middle of the support column (9) between the base (1) and the heating device (2), and the oil inlet pipe (6) and the oil outlet pipe (3) both pass through the guide hole of the guide plate (4).

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