CN113799322A

CN113799322A - A manufacturing mold and method suitable for ACC millimeter wave heating cover plate

Info

Publication number: CN113799322A
Application number: CN202111221689.7A
Authority: CN
Inventors: 沈晓明
Original assignee: Minshi Haila Jiaxing Auto Parts Co ltd
Current assignee: Minshi Haila Jiaxing Auto Parts Co ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2021-12-17

Abstract

The invention discloses a manufacturing mold suitable for an ACC millimeter wave heating cover plate, comprising a movable mold and a fixed mold, the movable mold is provided with a first injection molding cavity and a second injection molding cavity, and the movable mold is provided with There is a rotary mechanism, a primary injection gun is arranged on the fixed mold corresponding to the first injection cavity, and a secondary injection gun is arranged on the fixed mold corresponding to the second injection cavity. The present invention increases the heating of the millimeter wave cover. The function can quickly realize the function of removing snow, so that the millimeter-wave radar can enter the working state faster. The heating diaphragm of the cover plate is embedded in the Zhongjia, which can protect the heating diaphragm more effectively.

Description

Manufacturing die and method suitable for ACC millimeter wave heating cover plate

Technical Field

The invention belongs to the technical field of automobile exterior trimming parts and safety parts, and particularly relates to a manufacturing die and a manufacturing method suitable for an ACC millimeter wave heating cover plate.

Background

ACC is an Adaptive cruise control (Adaptive cruise control), and is especially important in the current electric vehicles and hybrid vehicles. In the driving process of an automobile, the ACC continuously senses the state of a front road through a radar in the front of the automobile, scans a front vehicle and is assisted with a wheel speed sensor on a wheel to feed back the speed of the vehicle, so that automatic acceleration and deceleration control is realized to a certain degree. The automatic speed-adjusting device not only can keep a certain running speed of a vehicle, but also can automatically adjust the vehicle speed according to the distance between the vehicle and a front vehicle to realize vehicle following so as to ensure the optimal safety distance between the vehicle and the front vehicle. The ACC technology is an active safety technology for preventing and reminding people before danger and protecting lives, and is the first step in the safety technical field of the automatic driving technology.

In the entire ACC adaptive cruise system, the most important application is millimeter wave radar (range sensor). Compared with a laser radar, an infrared radar and even a camera, the millimeter wave radar has the characteristics of being little affected by weather, small in size, high in integration level, high in frequency, short in wavelength, anti-interference, high in relative speed measuring accuracy and the like, so that the millimeter wave radar is selected as a main sensor for mainstream ACC vehicle types. And the millimeter wave radar plays a decisive role in the safety of the whole ACC system for feedback data obtained after scanning of a front vehicle.

The heating millimeter wave cover plate is arranged in front of a millimeter wave radar and fully covers a millimeter wave area emitted by the radar. The millimeter wave cover plate has the appearance performance requirement required by the exterior trimming part, simultaneously plays a role in shielding and protecting the radar, prevents the radar from being exposed in the environment and being physically or chemically damaged, and can be used for preventing burglary and exposing the structure. The attenuation degree of the ACC to the radar signal is an extremely important index for measuring the ACC cover plate. Due to the reason of the millimeter wave cover plate, the attenuation of radar waves and the deviation of the angle can cause serious influence on the identification of obstacles in automatic driving of the vehicle, so that the deviation of system judgment is caused, and finally serious traffic accidents such as vehicle collision loss and even casualties are caused.

The millimeter wave heating cover plate products in the market are few at present, and the current main technology is as follows: 1. placing a heating membrane on the surface of the cover plate, and bending the heating membrane to the back surface for installing a connector through insert injection molding; 2. and placing the heating membrane on the back of the cover plate, and performing injection molding through the insert.

For the first scheme, the requirement on the diaphragm is high, the diaphragm cost is high, the risk that the outer surface of the heating diaphragm is damaged is high, the risk of poor subsequent heating function and appearance is high, the connector part of the heating film needs to be bent to the back, the product process is long, and the rejection rate is high.

To the second scheme, the heating diaphragm is placed on the back and has high requirements for the heating temperature of the diaphragm, the diaphragm is high in cost, and due to the heat conduction problem, the heating function stability of the diaphragm placed on the back is poor, the temperature of the heating diaphragm is high, the requirements for cover plate materials are high, and the cost is increased.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a millimeter wave cover plate which is added with a heating function and can quickly realize the function of removing accumulated snow, so that a millimeter wave radar can quickly enter a working state, wherein a heating membrane of the cover plate is embedded in a middle, and the heating membrane is more effectively protected.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a preparation mould suitable for ACC millimeter wave heating cover plate, includes movable mould and cover half, be provided with the first die cavity of moulding plastics and the second die cavity of moulding plastics on the movable mould, be provided with rotation mechanism on the movable mould, it is provided with the rifle of once moulding plastics to correspond the first die cavity department of moulding plastics on the cover half, it is provided with the rifle of moulding plastics of secondary to correspond the second die cavity department of moulding plastics on the cover half.

Further, the slewing mechanism comprises a slewing cylinder.

Further, the swing mechanism comprises a servo motor.

And the first injection molding cavity and the second injection molding cavity are arranged in a central symmetry mode relative to a rotating shaft of the slewing mechanism.

And further, grooves for placing connectors are formed in the first injection molding cavity and the second injection molding cavity.

A manufacturing method suitable for an ACC millimeter wave heating cover plate comprises the following steps:

s1: placing the heating diaphragm and the connector into a first injection molding cavity and a second injection molding cavity;

s2: closing the mold, and performing injection molding on the back surface of the heating diaphragm in the first injection molding cavity through a one-time injection molding gun to form a product back plate;

s3: opening the mold, and rotating the movable mold to exchange the positions of the first injection molding cavity and the second injection molding cavity;

s4: closing the mold, and performing injection molding on the back surface of the heating diaphragm in the second injection molding cavity by using a one-time injection molding gun to form a product back plate; injecting the injection molding to the front side of the heating diaphragm in the first injection molding cavity through a secondary injection molding gun to form a product mask, and combining the product mask and a product back plate to complete the manufacture of a product in the first injection molding cavity;

s5: opening the mold, and rotating the movable mold to exchange the positions of the first injection mold cavity and the second injection mold cavity;

s6: and (4) closing the mold, carrying out injection molding on the front surface of the heating diaphragm in the second injection molding cavity by using a secondary injection molding gun to form a product mask, and combining the product mask and a product back plate to complete the production of the product in the second injection molding cavity.

Further, before step S1, a preprocessing step is included to detect the energization of the heating membrane and to confirm the function of the heating membrane.

And further, after the product is manufactured, the post-processing step is also included, the manufactured product is milled or removed from an injection molding glue opening in other modes, and the heating performance of the product is electrified and fully inspected.

Compared with the prior art, the invention has the beneficial effects that:

1. the heating film is embedded in the middle of the product, so that the heating film is protected more effectively;

2. the heating membrane is not directly exposed in the air, so that the weather-resistant requirement of the heating membrane is lower than that of the existing scheme, and the cost is reduced;

3. the heating diaphragm and the connector are directly embedded into the die, so that the problem of connection between the subsequent connector and the heating diaphragm is solved, and the process and the difficulty are reduced;

4. the product is directly molded by insert double-color injection molding, other process procedures are reduced, and the yield and the stability are high;

5. the development period is shortened, and the development cost is reduced;

6. reducing after-market complaints.

Drawings

FIG. 1 is a manufacturing mold suitable for an ACC millimeter wave heating cover plate according to the invention;

fig. 2 is a schematic view of a millimeter wave heating cover plate according to the present invention.

Reference numerals: 1. moving the mold; 11. a first injection molding cavity; 12. a second injection molding cavity; 2. fixing a mold; 31. a one-time injection molding gun; 32. a secondary injection molding gun; 4. a swing mechanism; 5. heating the membrane; 51. a glue injection port; 6. a connector assembly; 71. a back plate; 72. a face mask.

Detailed Description

An embodiment of a manufacturing mold and a method suitable for an ACC millimeter wave heating cover plate according to the present invention will be further described with reference to fig. 1 and 2.

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate that the orientation and positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific scope of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, a definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "a number" or "a number" means two or more unless explicitly specified otherwise.

The utility model provides a preparation mould suitable for ACC millimeter wave heating cover plate, includes movable mould 1 and cover half 2, be provided with first injection mold cavity 11 and the second injection mold cavity 12 of moulding plastics on the movable mould 1, be provided with rotation mechanism 4 on the movable mould 1, it is provided with once to mould plastics rifle 31 to correspond first injection mold cavity 11 department on the cover half 2, it is provided with twice rifle 32 to mould plastics to correspond second injection mold cavity 12 department on the cover half 2.

In the embodiment, the movable mold 1 and the fixed mold 2 are transversely arranged, and the movable mold 1 translates along the direction A in figure 1 when the mold is closed and opened, namely the mold is a horizontal mold.

In the embodiment, the revolving mechanism 4 is used to drive the movable mold 1 to rotate in the vertical direction, direction b in fig. 1, for the purpose of exchanging the positions of the first injection mold cavity 11 and the second injection mold cavity 12, while the positions of the fixed mold 2, the primary injection gun 31 and the secondary injection gun 32 are kept unchanged, and after the movable mold 1 rotates, the primary injection gun 31 and the secondary injection gun 32 respectively face the first injection mold cavity 11 and the second injection mold cavity 12.

As shown in fig. 1, in the preferred embodiment, the first injection mold cavity 11 and the second injection mold cavity 12 are arranged symmetrically with respect to the center of the rotating shaft of the rotating mechanism 4, the rotating mechanism 4 includes a rotating cylinder or the rotating mechanism 4 includes a servo motor, and the movable mold 1 is rotated by 180 ° by the action of the rotating cylinder or the servo motor.

In the preferred embodiment, the first injection mold cavity 11 and the second injection mold cavity 12 are both provided with a groove for placing the connector 6, and the groove of the connector 6 is used for accommodating the connector 6, so that the connector 6 and the heating membrane 5 are relatively fixed.

s1: placing the heating diaphragm 5 and the connector 6 into a first injection molding cavity 11 and a second injection molding cavity 12;

s2: closing the mold, and performing injection molding on the back surface of the heating diaphragm 5 in the first injection molding cavity 11 through the primary injection molding gun 31 to form a product back plate 71;

s3: opening the mold, and rotating the movable mold 1 to exchange the positions of the first injection mold cavity 11 and the second injection mold cavity 12;

s4: closing the mold, and injecting the back of the heating diaphragm 5 into the second injection mold cavity 12 by using the primary injection gun 31 to form a product back plate 71; injecting the injection molding to the front surface of the heating diaphragm 5 in the first injection molding cavity 11 through the secondary injection molding gun 32 to form a product mask 72, and combining the product mask 72 with a product back plate 71 to complete the production of the product in the first injection molding cavity 11;

s5: opening the mold, and rotating the movable mold 1 to exchange the positions of the first injection mold cavity 11 and the second injection mold cavity 12;

s6: and (3) closing the mold, injecting the injection molding to the front surface of the heating diaphragm 5 in the second injection molding cavity 12 by using the secondary injection molding gun 32 to form a product mask 72, and combining the product mask 72 with the product back plate 71 to complete the production of the product in the second injection molding cavity 12.

As shown in fig. 2, in the present embodiment, the glue injection opening 51 is provided at the position of the heating diaphragm 5 corresponding to the primary injection gun 31, and in step S2, the primary injection gun 31 injects the raw material to the back surface of the heating diaphragm 5 through the glue injection opening 51 and forms the product back plate 71.

Actually, in the injection process, the first injection mold cavity 11 and the second injection mold cavity 12 are alternatively injected, that is, in step S5, the product in the first injection mold cavity 11 can be taken out, and a new heating film 5 is put in to wait for injection molding.

The material of the face mask 72 is the same as that of the back panel 71 in this embodiment, increasing the bonding force.

In this embodiment, before step S1, a pre-processing step is preferably further included, specifically including, 1, detecting energization of the heating membrane 5, and confirming a function of the heating membrane 5; 2. detecting the size of a single product of the connector 6, and confirming the key matching size; 3. confirming the main physical parameter performance of the injection molding material; 4. and (5) drying the material before injection molding.

In the embodiment, after the product is manufactured, the method further comprises a post-processing step, specifically comprising the following steps of 1, removing an injection molding glue opening of the molded product through milling or other methods; 2. the surface of the product is coated with car body color or sprayed with hard coating according to requirements, and the surface cover 72 is protected; 3. the wall thickness of the product in the wave-transmitting range and the wave-transmitting performance of millimeter waves are fully checked, and the wall thickness tolerance needs to be controlled to be +/-0.1 mm; 4. electrifying the heating performance of the product for full inspection; 5. and (5) performing visual full inspection on the appearance of the product, packaging and warehousing.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. A manufacturing mold suitable for ACC millimeter wave heating cover plate, characterized in that: comprising a movable mold and a fixed mold, the movable mold is provided with a first injection molding cavity and a second injection molding cavity, and the movable mold is provided with a first injection molding cavity and a second injection molding cavity. A rotary mechanism is provided on the fixed mold, a primary injection gun is provided on the fixed mold corresponding to the first injection molding cavity, and a secondary injection gun is provided on the fixed mold corresponding to the second injection molding cavity.

2 . The manufacturing mold suitable for the ACC millimeter wave heating cover plate according to claim 1 , wherein the rotating mechanism comprises a rotating cylinder. 3 .

3 . The manufacturing mold suitable for ACC millimeter wave heating cover plate according to claim 1 , wherein the rotating mechanism comprises a servo motor. 4 .

4 . The manufacturing mold suitable for the ACC millimeter wave heating cover plate according to claim 2 or 3 , wherein the first injection molding cavity and the second injection molding cavity are arranged symmetrically with respect to the center of the rotation axis of the rotary mechanism. 5 .

5 . The manufacturing mold suitable for the ACC millimeter wave heating cover plate according to claim 4 , wherein the first injection molding cavity and the second injection molding cavity are provided with grooves for placing connectors. 6 .

6. A manufacturing method applicable to ACC millimeter wave heating cover plate, is characterized in that, comprises the following steps:

S1: Place the heating diaphragm and the connector in the first injection cavity and the second injection cavity;

S2: Clamp the mold, inject the back of the heating diaphragm into the first injection cavity by one injection gun, and form the back plate of the product;

S3: The mold is opened, and the movable mold is rotated to exchange the positions of the first injection cavity and the second injection cavity;

S4: The mold is closed, and the primary injection gun injects the back of the heating diaphragm into the second injection cavity to form the back plate of the product; the secondary injection gun injects the front of the heating diaphragm in the first injection cavity to form the product mask , and combine the product mask with the product backplane to complete the production of the product in the first injection cavity;

S5: The mold is opened, and the movable mold is rotated to exchange the positions of the first injection cavity and the second injection cavity;

S6: The mold is closed, and the secondary injection gun injects the front side of the heating diaphragm in the second injection cavity to form the product mask, and the product mask is combined with the product back plate to complete the production of the product in the second injection cavity.

7 . The method for manufacturing an ACC millimeter-wave heating cover plate according to claim 6 , wherein, before step S1 , it further comprises a pre-processing step of energizing the heating membrane for detection to confirm the function of the heating membrane. 8 .

8. The manufacturing method applicable to the ACC millimeter wave heating cover plate according to claim 7, characterized in that, after the product is manufactured, it also includes a post-processing step, and the manufactured product is removed by milling or other means. The plastic port is fully energized to check the heating performance of the product.