A method and device for hot pressing aluminum foil covering a motor cover of a new energy vehicle

Abstract

The present invention discloses a method for hot pressing and forming an aluminum foil covering a motor cover of a new energy vehicle, comprising the following steps: S1, compounding a layer of PE film on the aluminum foil; S2, pre-pressing and forming the aluminum foil using an aluminum foil hot pressing and forming device; S3, fixing the motor cover of the new energy vehicle on the aluminum foil hot pressing and forming device, and placing the aluminum foil pre-pressed in step S2 on the motor cover of the new energy vehicle, using the hot pressing die head of the aluminum foil hot pressing and forming device to maintain pressure at a temperature of 120-130°C for 5-10s, and after completion, the motor cover of the new energy vehicle is covered with aluminum foil. The present invention fixes the motor cover of the new energy vehicle on the aluminum foil hot pressing and forming device, and then hot presses and covers the pre-pressed aluminum foil, and the PE film on the aluminum foil melts so that the aluminum foil is compounded on the motor cover of the new energy vehicle, eliminating manual operation, greatly improving work efficiency, and also being able to quantify and position the aluminum foil covering position, so that the actual covering position of the aluminum foil can be closer to the theoretical design data.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile parts, and specifically relates to a method and device for hot pressing aluminum foil covering a motor cover of a new energy vehicle. Background Art

[0002] The motor wrapping of hybrid and extended-range new energy vehicles is easily exposed to the high temperature environment of the exhaust pipe for a long time, which can easily cause the parts to be baked and deformed, and the life of the parts is reduced, so thermal insulation protection is required. At present, a layer of thermal insulation aluminum foil is often pasted on the motor cover, and the thermal insulation aluminum foil is glued to the engine cover. The existing technology mainly relies on manual spraying and composite covering of aluminum foil on the motor cover, which has high work intensity and low work efficiency, and it is impossible to achieve uniform quantification of the aluminum foil covering position.

[0003] Therefore, a method and device for hot pressing aluminum foil covering the motor cover of a new energy vehicle urgently need to be proposed. Summary of the invention

[0004] In order to solve the defects of the prior art, the present invention provides a method and device for hot pressing aluminum foil covering a motor cover of a new energy vehicle.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention provides a method for hot pressing and forming an aluminum foil covering a motor cover of a new energy vehicle, comprising the following steps:

[0007] S1. Compound a layer of PE film on the aluminum foil;

[0008] S2, pre-pressing the aluminum foil using an aluminum foil hot pressing forming device;

[0009] S3, fix the motor cover of the new energy vehicle on the aluminum foil hot pressing forming device, and place the aluminum foil pre-pressed in step S2 on the motor cover of the new energy vehicle, and use the hot pressing die head of the aluminum foil hot pressing forming device to maintain pressure at 120-130°C for 5-10s. After completion, the motor cover of the new energy vehicle is covered with aluminum foil.

[0010] Preferably, when the aluminum foil pre-pressed in step S2 is hot-pressed and covered on the motor cover of the new energy vehicle, cooling water is passed through the aluminum foil hot-pressing forming device fixed on the motor cover of the new energy vehicle and close to the position where the aluminum foil is covered to cool it down.

[0011] Preferably, the temperature of the cooling water is 5-10°C.

[0012] The present invention also provides a new energy vehicle motor cover covered with aluminum foil hot pressing forming device, comprising:

[0013] Bracket;

[0014] An upper profiling bracket is arranged on the bracket, wherein the upper surface of the upper profiling bracket is provided with a pre-pressed molding profile that matches the profile shape of the position that needs to be covered with aluminum foil, and the left and right surfaces of the upper profiling bracket are provided with a left bracket positioning profile and a right bracket positioning profile that match the left and right profiles on the inner side of the upper part of the motor cover of the new energy vehicle, and a cooling water pipe is also arranged in the upper profiling bracket;

[0015] A lower profiling bracket is arranged on the bracket and is located below the upper profiling bracket, and the lower profiling bracket is provided with a lower bracket positioning profile that matches the inner profile of the lower part of the motor cover of the new energy vehicle;

[0016] A motor cover fixing mechanism is arranged on the bracket and is used to press the motor cover of the new energy vehicle onto the upper contour bracket and the lower contour bracket;

[0017] A pre-pressing driving mechanism is arranged on the bracket and its output end is connected to the hot pressing die head, and is used to drive the hot pressing die head to pre-press and shape the aluminum foil;

[0018] The hot pressing die head is used to pre-press the aluminum foil into a shape that matches the shape of the surface where the aluminum foil needs to be covered.

[0019] Preferably, the motor cover fixing mechanism includes a pneumatic press and a motor cover outer surface profiling block. The pneumatic press is arranged on a bracket and is located outside the outer surface of the motor cover of the new energy vehicle after being fixed. The motor cover outer surface profiling block is arranged at the output end of the pneumatic press.

[0020] Preferably, the hot pressing die comprises a die body, an electric heating tube, and a heat insulation plate, wherein the electric heating tube is passed through the die body, and the heat insulation plate is arranged on the upper surface of the die body.

[0021] Preferably, the pre-pressing driving mechanism comprises an aluminum foil pressing cylinder, which is arranged on a bracket and has an output end connected to the die body.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention fixes the motor cover of the new energy vehicle on an aluminum foil hot-pressing forming device, and then performs hot-pressing covering on the pre-pressed aluminum foil. The PE film on the aluminum foil melts so that the aluminum foil is compounded on the motor cover of the new energy vehicle, thereby eliminating manual operation and greatly improving work efficiency. The covering position of the aluminum foil can also be fixed, quantified and positioned, so that the actual covering position of the aluminum foil can be closer to the theoretical design data. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a device for hot pressing and forming a motor cover of a new energy vehicle covered with aluminum foil according to the present invention;

[0025] Figure 2 It is a structural schematic diagram of a heating die head in a hot pressing forming device for covering an aluminum foil on a motor cover of a new energy vehicle according to the present invention;

[0026] Figure 3 It is a schematic structural diagram of the aluminum foil after pre-pressing in a hot-pressing forming device for covering an aluminum foil on a motor cover of a new energy vehicle according to the present invention;

[0027] Figure 4 The invention discloses a schematic structural diagram of an upper profiling bracket and a lower profiling bracket in a device for hot-pressing and forming a motor cover of a new energy vehicle with aluminum foil. DETAILED DESCRIPTION

[0028] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0029] In the description of the present invention, it should be understood that the terms "left" and "right" indicate directions or positional relationships based on the accompanying drawings. Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connection" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] This embodiment provides a method for hot pressing aluminum foil covering a motor cover of a new energy vehicle, comprising the following steps:

[0032] S1. Compound a layer of PE film on the aluminum foil;

[0033] S2, pre-pressing the aluminum foil using an aluminum foil hot pressing forming device;

[0034] S3, fix the motor cover of the new energy vehicle on the aluminum foil hot pressing forming device, and place the aluminum foil pre-pressed in step S2 on the motor cover of the new energy vehicle, and use the hot pressing die head of the aluminum foil hot pressing forming device to maintain pressure at 120-130°C for 5-10s. After completion, the motor cover of the new energy vehicle is covered with aluminum foil.

[0035] like Figures 1 to 4As shown, this embodiment also provides a new energy vehicle motor cover covered with aluminum foil hot pressing forming device, including a bracket 1, an upper contour bracket 2, a lower contour bracket 3, a motor cover fixing mechanism, a pre-pressing drive mechanism 4 and a hot pressing die head 5.

[0036] In this embodiment, the upper contour bracket 2 is arranged on the bracket 1, and the upper contour bracket 2 is made of solid aluminum. The upper surface of the upper contour bracket 2 is provided with a pre-pressed molding surface that matches the surface shape of the position that needs to be covered with aluminum foil. The left and right surfaces of the upper contour bracket 2 are provided with a left bracket positioning surface and a right bracket positioning surface that match the left and right surfaces on the upper inner side of the new energy vehicle motor cover 6. A cooling water pipe is also arranged inside the upper contour bracket 2.

[0037] In this embodiment, the lower contour bracket 3 is arranged on the bracket 1 and is located below the upper contour bracket 2. The lower contour bracket 3 is made of ABS plastic steel. The lower contour bracket 3 is provided with a lower bracket positioning surface that matches the inner surface of the lower part of the motor cover of the new energy vehicle.

[0038] In this embodiment, a motor cover fixing mechanism (not shown in the figure) is arranged on the bracket 1, and the motor cover fixing mechanism includes a pneumatic pressing clamp and a motor cover outer surface profiling block. The pneumatic pressing clamp is arranged on the bracket and is located on the outer side of the outer surface of the motor cover of the new energy vehicle after being fixed. The motor cover outer surface profiling block is arranged at the output end of the pneumatic pressing clamp, and the pneumatic pressing clamp drives the motor cover outer surface profiling block to be pressed onto the motor cover 6 of the new energy vehicle, thereby pressing the motor cover 6 of the new energy vehicle onto the upper profiling bracket 2 and the lower profiling bracket 3.

[0039] In this embodiment, the hot pressing die 5 includes a die body 51, an electric heating tube 52, and a heat insulation board 53. The die body 51 is a solid aluminum block, the electric heating tube 52 is inserted into the die body 51, and the heat insulation board 53 is arranged on the upper surface of the die body 51. The hot pressing die 5 is used to pre-press the aluminum foil into a shape that matches the profile shape of the position where the aluminum foil needs to be covered.

[0040] In this embodiment, the pre-pressing driving mechanism 4 includes an aluminum foil pressing cylinder 41 , which is disposed on the bracket 1 and has an output end connected to the die body 51 , for driving the hot pressing die 5 to pre-press the aluminum foil.

[0041] The working principle of this embodiment is further described below:

[0042] The hot pressing die is set with the PLC control program of the aluminum foil hot pressing forming device and the heating temperature of the hot pressing die (the heating temperature can be precisely controlled at 100-200°C for aluminum foils of different thicknesses, and 120-130°C is selected in this embodiment), and cooling water is passed through the cooling water pipe inside the upper profiling bracket (the cooling water temperature is 5-10°C);

[0043] Then the aluminum foil pressing cylinder is returned, the pneumatic pressing clamp is opened, the motor cover of the new energy vehicle is placed on the upper profiling bracket and the lower profiling bracket, the pre-pressed aluminum foil is placed on the motor cover of the new energy vehicle, and then the pneumatic pressing clamp presses the motor cover of the new energy vehicle after receiving the signal, and the aluminum foil pressing cylinder presses the aluminum foil after receiving the signal and maintains the pressure, and the PE film on the aluminum foil begins to melt, penetrate and adhere to the motor cover of the new energy vehicle under the temperature of the electric heating tube;

[0044] After the pressure holding is completed, the aluminum foil pressing cylinder and the pneumatic pressing clamp are retracted and the composite parts are taken out.

[0045] Among them, when the aluminum foil is pre-pressed and formed by using the aluminum foil hot pressing forming device, the electric heating tube does not work and only the die body is used.

[0046] In this embodiment, the temperature control system can realize the temperature regulation of a single electric heating tube. By adjusting the temperature of a single electric heating tube near the boundary of the aluminum foil to control the melting degree of the PE film, the problem of easy delamination after the boundary of the aluminum foil is bonded can be solved. The cost of the electric heating tube is lower and the economic benefit is better. Cooling water is passed through the upper contoured bracket to prevent the motor cover of the new energy vehicle from secondary deformation during the heating and pressure holding process. In addition, the aluminum foil hot pressing forming device of the present invention combines aluminum foil pre-pressing and aluminum foil hot pressing composite together to realize multi-purpose tooling for different forming processes of aluminum foil, save the cost of mold tooling development, make product production more flexible, and be closer to product data design theory.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for hot pressing aluminum foil covering a motor cover of a new energy vehicle, characterized in that: The following steps are involved: S1. Compound a layer of PE film on the aluminum foil; S2, pre-pressing the aluminum foil using an aluminum foil hot-pressing forming device; when the pre-pressed aluminum foil is hot-pressed and covered on the motor cover of the new energy vehicle, cooling water is passed through the aluminum foil hot-pressing forming device fixed on the motor cover of the new energy vehicle and close to the position where the aluminum foil is covered to cool down; the temperature of the cooling water is 5-10°C; S3, fix the motor cover of the new energy vehicle on the aluminum foil hot pressing forming device, and place the aluminum foil pre-pressed in step S2 on the motor cover of the new energy vehicle, and use the hot pressing die head of the aluminum foil hot pressing forming device to maintain pressure at 120-130°C for 5-10s. After completion, the motor cover of the new energy vehicle is covered with aluminum foil.

2. A hot pressing forming device for covering the motor cover of a new energy vehicle with aluminum foil, characterized in that: include: Bracket; An upper profiling bracket is arranged on the bracket, wherein the upper surface of the upper profiling bracket is provided with a pre-pressed molding profile that matches the profile shape of the position that needs to be covered with aluminum foil, and the left and right surfaces of the upper profiling bracket are provided with a left bracket positioning profile and a right bracket positioning profile that match the left and right profiles on the inner side of the upper part of the motor cover of the new energy vehicle, and a cooling water pipe is also arranged in the upper profiling bracket; A lower profiling bracket is arranged on the bracket and is located below the upper profiling bracket, and the lower profiling bracket is provided with a lower bracket positioning profile that matches the inner profile of the lower part of the motor cover of the new energy vehicle; A motor cover fixing mechanism is arranged on the bracket and is used to press the motor cover of the new energy vehicle onto the upper contour bracket and the lower contour bracket; A pre-pressing driving mechanism is arranged on the bracket and its output end is connected to the hot pressing die head, and is used to drive the hot pressing die head to pre-press and shape the aluminum foil; The hot pressing die head is used to pre-press the aluminum foil into a shape that matches the shape of the surface where the aluminum foil needs to be covered.

3. The device for hot pressing and forming aluminum foil for covering the motor cover of a new energy vehicle according to claim 2 is characterized in that: The motor cover fixing mechanism includes a pneumatic clamp and a motor cover outer surface profiling block. The pneumatic clamp is arranged on a bracket and is located outside the outer surface of the motor cover of the new energy vehicle after being fixed. The motor cover outer surface profiling block is arranged at the output end of the pneumatic clamp.

4. The device for hot pressing and forming aluminum foil for covering the motor cover of a new energy vehicle according to claim 2 is characterized in that: The hot pressing die head comprises a die head body, an electric heating tube and a heat insulation plate. The electric heating tube is inserted into the die head body, and the heat insulation plate is arranged on the upper surface of the die head body.

5. The device for hot pressing and forming aluminum foil for covering the motor cover of a new energy vehicle according to claim 4 is characterized in that: The pre-pressing driving mechanism comprises an aluminum foil pressing cylinder, which is arranged on a bracket and an output end of which is connected to the die body.

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