A foaming method for a potting process system

Abstract

The present invention relates to a potting processing method for a transponder vehicle-mounted antenna, which is applicable to the potting of the transponder vehicle-mounted antenna. According to the described steps, during the foaming and expansion process of the polyurethane potting compound, the air inside the housing will be squeezed. If the air cannot be discharged smoothly, a large number of bubbles will exist on the surface after curing, affecting the product quality. After the potting tooling cover plate (6) is covered on the antenna housing assembly (5), the air will be discharged along the exhaust holes (2) and the air guide grooves (3). The four sides of the potting tooling cover plate (6) are provided with 8 positioning holes (4), and the 8 positioning holes (4) are used to limit the movement of the potting tooling cover plate (6). This potting processing method for the transponder vehicle-mounted antenna aims to solve the technical problems such as high labor intensity and low processing efficiency during the potting processing of the transponder vehicle-mounted antenna, so as to ensure the product consistency and mass production.

Description

Technical Field

[0001] The present invention relates to a foaming method for an encapsulation process system, and particularly to an encapsulation processing method for a transponder vehicle-mounted antenna, which is applicable to the encapsulation of a transponder vehicle-mounted antenna. Background Art

[0002] At present, for the encapsulation of a transponder vehicle-mounted antenna, due to problems such as air pockets on the encapsulation surface, poor adhesion of the bottom shell, cracks on the encapsulation cutting surface, and obvious air pits on the surface quality during the encapsulation with encapsulating material, it will lead to high labor intensity of workers, low processing efficiency, the need for multiple repairs, and is not conducive to mass production. Summary of the Invention

[0003] The purpose of the present invention is to provide a foaming method for an encapsulation process system, aiming to solve technical problems such as high labor intensity and low processing efficiency during the encapsulation processing of a transponder vehicle-mounted antenna, so as to ensure product consistency and mass production.

[0004] To achieve the above purpose, a foaming method for an encapsulation process system is involved, and its characteristics are: the specific implementation steps are as follows:

[0005] 1) Put the assembled antenna housing assembly and the encapsulation tooling cover plate into a high-temperature oven.

[0006] 2) Set the oven temperature to 50°C.

[0007] 3) Heat the antenna housing assembly and the encapsulation tooling cover plate in the oven at 50°C for 30 minutes.

[0008] 4) Take out the antenna housing assembly and the encapsulation tooling cover plate from the oven and place them at the designated encapsulation position.

[0009] 5) Brush the release agent on the lower surface of the encapsulation tooling cover plate and let it stand for 2 minutes.

[0010] 6) Use an infrared thermometer to measure the temperature inside the cavity of the antenna housing assembly, the temperature of the mesh plate, and the temperature of the lower surface of the cover plate, so that the temperature is within the range of 30°C - 40°C.

[0011] 7) Push the encapsulation tooling to the encapsulation area of the workshop and set the encapsulation parameters: the mixing ratio of encapsulation A and B materials is 1:1.1, and the total weight is 2000g - 2500g.

[0012] 8) Align and encapsulate the middle part of the antenna housing assembly.

[0013] 9) After the encapsulation is completed, tilt the antenna housing assembly back and forth so that the polyurethane is in full contact with the encapsulated part inside the antenna housing assembly.

[0014] 10) Cover the antenna housing encapsulation tooling cover plate and let it stand.

[0015] 11) After the potting material is cured, open the cover plate of the antenna housing potting tooling to remove the flash material from the antenna housing assembly.

[0016] In step 9) described above, during the foaming and expansion of the polyurethane potting material, the air in the housing will be squeezed. If the air cannot be discharged smoothly, there will be a large number of bubbles on the surface after curing, which will affect the product quality. After the cover plate of the potting tooling is covered on the antenna housing assembly, the air will be discharged along the exhaust holes and air guide grooves.

[0017] There are 8 positioning holes on the four sides of the potting tooling cover plate, and the 8 positioning holes are used to limit the movement of the potting tooling cover plate.

[0018] There are multiple pockmarks on the potting tooling cover plate, and the multiple pockmarks are used to increase the contact area of the cover plate, which is beneficial to the smooth discharge of air and makes the product consistent.

[0019] Air guide grooves are also milled between the pockmarks, and it is more convenient for gas to be discharged from the air guide grooves to the exhaust holes.

[0020] Compared with the prior art, the present invention has the following advantages: The present invention can realize the mass production of the transponder vehicle-mounted antenna potting, and has the ability of secondary repair.

[0021] The present invention will be further described below with reference to the accompanying drawings of the embodiments. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the lower surface of the antenna housing potting tooling cover plate;

[0023] Figure 2 It is Figure 1 A schematic diagram of the pockmarks;

[0024] Figure 3 It is a schematic diagram of the antenna housing assembly;

[0025] Figure 4 It is a schematic diagram of the stencil;

[0026] Figure 5 It is a schematic diagram of the inside of the antenna housing assembly;

[0027] Figure 6 It is a schematic diagram of the antenna housing potting tooling cover plate;

[0028] In the figure: 1. Pockmarks, 2. Exhaust holes, 3. Air guide grooves, 4. Positioning holes; 5. Antenna housing assembly; 6. Potting tooling cover plate, 7. Cavity, 8. Stencil, 9. Lower surface of the cover plate, 10. Potting tooling (including antenna housing assembly, antenna housing potting tooling cover plate, stencil, turnover cart), 11. Intermediate part; 12. Release agent. Detailed Embodiments

[0029] To further elaborate on the technical means and methods adopted by the present invention to achieve the predetermined purpose, the specific implementation manners, structural features and methods of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0030] As Figure 1 , Figure 2 , Figure 3 shown, the present invention relates to a foaming method for an encapsulation process system, and is characterized in that the specific implementation steps are as follows:

[0031] 1). Put the assembled antenna housing assembly 5 and the encapsulation tooling cover plate 6 into a high-temperature oven, set the oven temperature to 50 °C, and heat the antenna housing assembly 5 and the encapsulation tooling cover plate 6 in the oven at 50 °C for 30 min;

[0032] 2). Take out the antenna housing assembly 5 and the encapsulation tooling cover plate 6 from the oven and place them at the designated position;

[0033] 3). Brush the release agent 12 on the lower surface 9 of the encapsulation tooling cover plate and let it stand for 2 min;

[0034] 4). Use an infrared thermometer to measure the temperature of the cavity 7 of the antenna housing assembly 5, the temperature of the mesh plate 8, and the temperature of the lower surface 9 of the cover plate, and the temperature is in the range of 30 °C - 40 °C;

[0035] 5). Push the encapsulation tooling 10 to the encapsulation area of the workshop and set the encapsulation parameters: the mixing ratio of encapsulation A and B materials is 1:1.1, and the total weight is 2000 g - 2500 g;

[0036] 6). Align the middle part 11 of the antenna housing assembly of the antenna housing assembly 5 and perform encapsulation;

[0037] 7). After the encapsulation is completed, tilt the antenna housing assembly 5 back and forth so that the polyurethane is in full contact with the antenna housing assembly 5;

[0038] 8). Cover the antenna housing encapsulation tooling cover plate 6 and let it stand;

[0039] 9). After the encapsulation material is cured, open the antenna housing encapsulation tooling cover plate 6 and remove the flash and waste materials.

[0040] In step 9) described above, during the foaming and expansion process of the polyurethane encapsulation material, the air in the shell will be squeezed. If the air cannot be discharged smoothly, there will be a large number of bubbles on the surface after curing, which will affect the product quality. After the antenna housing assembly 5 is covered with the encapsulation tooling cover plate 6, the air will be discharged along the exhaust hole 2 and the air guide groove 3. The 8 positioning holes 4 on the four sides are used to limit the movement of the cover plate.

[0041] There are multiple pockmarks 1 on the potting tooling cover plate 6. The multiple pockmarks 1 are used to increase the contact area of the cover plate, which is beneficial to the smooth discharge of air, so that the product can have consistency. The pockmarks 1 are raised parts milled out of the surface shadow of the cover plate, as Figure 2 shown.

[0042] Figure 2 Gas guiding grooves 3 are also milled between the respective pockmarks 1, and it is more convenient for gas to be discharged from the gas guiding grooves 3 to the exhaust holes 2.

[0043] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention pertains, without departing from the concept of the present invention, several simple deductions or substitutions can also be made, which should all be regarded as belonging to the protection scope of the present invention.

Claims

1. A foaming method for an encapsulation process system, Characterized in that: The specific implementation steps are as follows: 1) Place the assembled antenna housing assembly (5) and the encapsulation tooling cover plate (6) into a high-temperature oven; 2) Set the oven temperature to 50 °C; 3) Heat the antenna housing assembly (5) and the encapsulation tooling cover plate (6) in the oven at 50 °C for 30 min; 4) Take out the antenna housing assembly (5) and the encapsulation tooling cover plate (6) from the oven and place them at the designated encapsulation position; 5) Brush the release agent (12) on the lower surface (9) of the encapsulation tooling cover plate and let it stand for 2 min; 6) Use an infrared thermometer to measure the temperature inside the cavity (7) of the antenna housing assembly (5), the temperature of the mesh plate (8), and the temperature of the lower surface (9) of the cover plate, so that the temperature is within the range of 30 °C - 40 °C; 7) Push the encapsulation tooling (10) to the workshop encapsulation area and set the encapsulation parameters: the mixing ratio of encapsulation A and B materials is 1:1.1, and the total weight is 2000 g - 2500 g; 8) Align and encapsulate the middle part (11) of the antenna housing assembly (5); 9) After encapsulation, tilt the antenna housing assembly (5) back and forth so that the polyurethane is in full contact with the encapsulated part inside the antenna housing assembly (5); 10) Cover the antenna housing encapsulation tooling cover plate (6) and let it stand; 11) After the encapsulation material is cured, open the antenna housing encapsulation tooling cover plate (6) and remove the flash and rough materials on the antenna housing assembly (5).

2. The foaming method for an encapsulation process system according to claim 1, Characterized in that: In step 9), during the foaming and expansion process of the polyurethane encapsulation material, the air inside the shell will be squeezed. If the air cannot be discharged smoothly, there will be a large number of bubbles on the surface after curing, which will affect the product quality. After the antenna housing assembly (5) is covered with the encapsulation tooling cover plate (6), the air will be discharged along the exhaust hole (2) and the air guide groove (3).

3. The foaming method for an encapsulation process system according to claim 1, Characterized in that: There are 8 positioning holes (4) on the four sides of the encapsulation tooling cover plate (6), and the 8 positioning holes (4) are used to limit the movement of the encapsulation tooling cover plate (6).

4. The foaming method for an encapsulation process system according to claim 1, Characterized in that: There are multiple pockmarks (1) on the encapsulation tooling cover plate (6), and the multiple pockmarks (1) are used to increase the contact area of the cover plate, which is beneficial to the smooth discharge of air and makes the product have consistency.

5. The foaming method for an encapsulation process system according to claim 4, Characterized in that: An air guide groove (3) is also milled between the two pockmarks (1), and it is more convenient for the gas to be discharged from the air guide groove (3) to the exhaust hole (2).

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