Electric heating forming die for automobile roof base material

Abstract

The utility model relates to the technical field of automobile roof production, and discloses an automobile roof base material electric heating forming die which comprises a base, supporting tables fixedly connected to the two sides of the upper end face of the base, a lower die fixedly installed on the upper end faces of the two supporting tables, an upper die arranged above the lower die, and a top plate fixedly installed on the upper end face of the upper die. Cooling water enters the water filling barrels through the water guide pipes, the water filling barrels make direct contact with a mold heat source, the contact area of the cooling water and the mold is increased by 3-5 times compared with a traditional water channel design, and the heat exchange coefficient is increased; generally speaking, the cooling water enters the water filling cylinder through the water guide pipe, exchanges heat with the lower die and then is discharged, and the heat is taken away.

Description

An electrothermal forming mold for automotive headliner substrate Technical Field

[0001] This utility model relates to the field of automobile roof production technology, specifically to an electrothermal forming mold for automobile roof substrate. Background Technology

[0002] Substrate electrothermal forming molds are process equipment that uses electrical energy to convert into heat energy, heating and softening a specific substrate, and then shaping it into the desired shape through a mold. They are widely used in thermoforming processes in plastics, rubber, and composite materials, offering advantages such as high heating efficiency, good forming accuracy, and short production cycles.

[0003] Existing devices have some drawbacks during use. For example, traditional mold cooling systems usually adopt a built-in water channel design, which absorbs heat by circulating cooling water inside the mold. However, the water channel design is limited by the contact area between the water channel and the mold, resulting in low heat exchange efficiency. Summary of the Invention

[0004] The purpose of this utility model is to provide an electrothermal forming mold for automotive roof substrate, which solves the problem that the water channel design is limited by the contact area between the water channel and the mold, resulting in low heat exchange efficiency.

[0005] This utility model provides the following technical solution: an electrothermal forming mold for an automotive roof substrate, including a base, with support platforms fixedly connected to both sides of the upper end face of the base, a lower mold fixedly installed on the upper end face of the two support platforms, an upper mold provided above the lower mold, a top plate fixedly installed on the upper end face of the upper mold, and a heat dissipation component for assisting the heat dissipation of the lower mold provided on the lower end face.

[0006] As a preferred embodiment of the above technical solution, the heat dissipation component includes an array of water-filling cylinders fixed to the lower end face of the lower mold. A load-bearing plate is fixedly sleeved on the outer wall of the water-filling cylinder. The load-bearing plate is fixed to the side wall of the support platform on both sides. A water guide pipe is preset on the inner side of the load-bearing plate, and the water guide pipe passes through multiple water-filling cylinders.

[0007] As a preferred embodiment of the above technical solution, a temperature sensor is installed at each of the four corners of the lower end face of the load-bearing plate, and the measuring end of the temperature sensor is in close contact with the outer surface of the load-bearing plate.

[0008] As a preferred embodiment of the above technical solution, an upper guide port is provided at the center of the top plate, and a lower guide port is provided at the center of the upper mold.

[0009] As a preferred embodiment of the above technical solution, a cylinder is fixedly installed at the center of the upper end face of the base, and a push rod for demolding is fixedly connected to the piston end of the cylinder. A top mold hole for the push rod to pass through is provided on the lower mold.

[0010] As a preferred embodiment of the above technical solution, multiple heating tubes are arrayed on the side walls of both the upper and lower molds.

[0011] As a preferred embodiment of the above technical solution, limit holes are provided at the four corners of the upper end face of the lower mold, and limit rods adapted to the limit holes are fixedly connected at the four corners of the lower end face of the upper mold.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, cooling water enters the filling cylinder through a water guide pipe. The filling cylinder directly contacts the heat source of the mold. The contact area between the cooling water and the mold is increased by 3-5 times compared to the traditional water channel design, which improves the heat exchange coefficient. Furthermore, multiple filling cylinders are interspersed to form a series or parallel water path, realizing the circulation of cooling water to absorb heat. In general, the cooling water enters the filling cylinder through the water guide pipe, exchanges heat with the lower mold, and is then discharged, carrying away the heat. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the overall structure of an electrothermal forming mold for an automotive roof substrate from a first-view perspective.

[0015] Figure 2 is a schematic diagram of the overall structure of an electrothermal forming mold for an automotive roof substrate from a second perspective.

[0016] Figure 3 is a schematic diagram of the overall exploded structure of an electrothermal forming mold for an automotive roof substrate.

[0017] In the diagram: 1. Base; 11. Support platform; 12. Lower mold; 13. Upper mold; 14. Top plate; 2. Heat dissipation assembly; 21. Water filling cylinder; 22. Load-bearing plate; 23. Water guide pipe; 31. Temperature sensor; 41. Upper guide port; 42. Lower guide port; 51. Cylinder; 52. Push rod; 53. Top mold hole; 61. Heating element; 71. Limiting hole; 72. Limiting rod. Detailed Implementation

[0018] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings of the embodiments. Embodiments

[0019] As shown in Figures 1-3, this utility model provides a technical solution: an electrothermal forming mold for an automotive roof substrate, comprising a base 1, with support platforms 11 fixedly connected to both sides of the upper surface of the base 1, a lower mold 12 fixedly installed on the upper surface of the two support platforms 11, an upper mold 13 arranged above the lower mold 12, a top plate 14 fixedly installed on the upper surface of the upper mold 13, and a heat dissipation component 2 for assisting the lower mold 12 in heat dissipation on the lower surface of the lower mold 12. In specific use, the upper mold 13 and the lower mold 12 are combined to form a mold cavity for manufacturing an automotive roof, and the heat dissipation component 2 is used to dissipate heat from the lower mold 12, thereby removing heat and improving the forming efficiency of the automotive roof.

[0020] As one embodiment of this invention, as shown in Figure 2, the heat dissipation component 2 includes water-filling cylinders 21 arrayed and fixed to the lower end face of the lower mold 12. A load-bearing plate 22 is fixedly sleeved on the outer wall of the water-filling cylinder 21. The load-bearing plate 22 is fixed to the side wall of the support platform 11 on both sides. A water guide pipe 23 is preset on the inner side of the load-bearing plate 22, and the water guide pipe 23 passes through multiple water-filling cylinders 21. In specific use, cooling water enters the water-filling cylinder 21 through the water guide pipe 23. The water-filling cylinder 21 directly contacts the heat source of the mold, and multiple water-filling cylinders 21 are connected in series or parallel to form a water circuit, so as to realize the cooling water circulation and heat absorption. In general, the cooling water enters the water-filling cylinder 21 through the water guide pipe 23, exchanges heat with the lower mold 12, and is discharged, taking away the heat.

[0021] As one implementation method in this embodiment, as shown in Figure 2, a temperature sensor 31 is installed at each of the four corners of the lower end face of the load-bearing plate 22. The measuring end of the temperature sensor 31 is in close contact with the outer surface of the load-bearing plate 22. In actual use, the temperature sensor 31 is in close contact with the outer surface of the load-bearing plate 22 to monitor the temperature of the load-bearing plate 22 in real time, and indirectly reflects the heat dissipation status and cooling water circulation effect of the lower mold 12.

[0022] As one implementation method in this embodiment, as shown in Figure 3, an upper guide port 41 is provided at the center of the top plate 14, and a lower guide port 42 is provided at the center of the upper mold 13. In actual use, the upper guide port 41 and the lower guide port 42 form a vertical guide channel for the substrate, ensuring that the heated and softened car roof substrate falls accurately into the mold cavity.

[0023] As one embodiment of this invention, as shown in Figures 2 and 3, a cylinder 51 is fixedly installed at the center of the upper surface of the base 1. The piston end of the cylinder 51 is fixedly connected to a push rod 52 for demolding. The lower mold 12 has a top mold hole 53 for the push rod 52 to pass through. In actual use, the cylinder 51 is started to drive the push rod 52 to move vertically upward, so that the push rod 52 passes through the top mold hole 53 and directly ejects the molded car roof substrate.

[0024] As one implementation method in this embodiment, as shown in Figures 1 and 2, multiple heating tubes 61 are arrayed on the side walls of the upper mold 13 and the lower mold 12. First, the heating tubes 61 are embedded in the side walls of the upper mold 13 and the lower mold 12, and the mold cavity is directly heated by resistance heating to ensure that the substrate is kept at the softening temperature before molding, so as to facilitate flow and fill the entire mold cavity.

[0025] As one embodiment of this invention, as shown in Figure 3, limit holes 71 are provided at the four corners of the upper end face of the lower mold 12, and limit rods 72 adapted to the limit holes 71 are fixedly connected at the four corners of the lower end face of the upper mold 13. By sliding the limit rods 72 on the upper mold 13 up and down in alignment with the limit holes 71, the stability and precise fit between the upper mold 13 and the lower mold 12 can be ensured.

[0026] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. An electrothermal forming mold for an automotive roof substrate, comprising a base (1), characterized in that: The base (1) has a support platform (11) fixedly connected to both sides of the upper end face. The two support platforms (11) have a lower mold (12) fixedly installed on the upper end face. The lower mold (12) has an upper mold (13) above it. The upper mold (13) has a top plate (14) fixedly installed on the upper end face. The lower mold (12) has a heat dissipation component (2) for assisting the lower mold (12) in dissipating heat.

2. The electrothermal forming mold for an automotive headliner substrate according to claim 1, characterized in that: The heat dissipation assembly (2) includes a water filling cylinder (21) arrayed and fixed to the lower end face of the lower mold (12). A load-bearing plate (22) is fixedly sleeved on the outer wall of the water filling cylinder (21). The load-bearing plate (22) is fixed on both sides to the side wall of the support platform (11). A water guide pipe (23) is preset on the inner side of the load-bearing plate (22), and the water guide pipe (23) passes through multiple water filling cylinders (21).

3. The electrothermal forming mold for an automotive headliner substrate according to claim 2, characterized in that: Thermometers (31) are installed at the four corners of the lower end face of the load-bearing plate (22), and the measuring end of the thermometer (31) is in close contact with the outer surface of the load-bearing plate (22).

4. The electrothermal forming mold for an automotive headliner substrate according to claim 1, characterized in that: The top plate (14) has an upper guide port (41) at its center, and the upper mold (13) has a lower guide port (42) at its center.

5. The electrothermal forming mold for an automotive headliner substrate according to claim 1, characterized in that: A cylinder (51) is fixedly installed at the center of the upper end face of the base (1). The piston end of the cylinder (51) is fixedly connected to a push rod (52) for demolding. A top mold hole (53) is opened on the lower mold (12) for the push rod (52) to pass through.

6. The electrothermal forming mold for an automotive headliner substrate according to claim 1, characterized in that: Multiple heating tubes (61) are arrayed on the side walls of both the upper mold (13) and the lower mold (12).

7. The electrothermal forming mold for an automotive headliner substrate according to claim 1, characterized in that: Limiting holes (71) are provided at the four corners of the upper end face of the lower mold (12), and limiting rods (72) adapted to the limiting holes (71) are fixedly connected at the four corners of the lower end face of the upper mold (13).

Images