Reflecting surface manufacturing mold and use method

Abstract

The invention relates to a reflecting surface manufacturing mold and a using method, the reflecting surface manufacturing mold comprises a mold body, the mold body comprises an upper mold and a lower mold, the middle part of the bottom of the upper mold extends downwards to form an arc-shaped convex part, and the middle part of the lower mold sinks downwards to form a placing area; when the upper die and the lower die are assembled, the arc-shaped protruding part is located in the containing area, a containing space is formed between the arc-shaped protruding part and the containing area, and a reflecting surface is formed in the containing space. The invention relates to the technical field of thunder reflecting surfaces. The upper mold and the lower mold are jointly manufactured to form the radar reflecting surface, so that the two surfaces of the radar reflecting surface are smooth surfaces, and the effect of improving the manufacturing precision of the radar reflecting surface is further achieved.

Description

Technical Field

[0001] The invention relates to the technical field of radar reflective surfaces, and in particular to a reflective surface manufacturing mold and a use method thereof. Background Art

[0002] In the manufacturing process of the existing radar reflector, an arc-shaped protrusion is usually used. This manufacturing method results in only one side of the radar reflector being smooth and the other side being rough, thereby reducing the manufacturing accuracy of the radar reflector. Summary of the invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a reflective surface manufacturing mold and a method of use, wherein an upper mold and a lower mold are jointly manufactured to form a radar reflective surface, so that both sides of the radar reflective surface are smooth surfaces, thereby improving the manufacturing accuracy of the radar reflective surface.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions: A reflective surface manufacturing mold and a method for using the mold, comprising a mold body, the mold body comprising an upper mold and a lower mold, the middle portion of the bottom of the upper mold extending downward to form an arc-shaped convex portion, and the middle portion of the lower mold concave downward to form a placement area; When the upper mold and the lower mold are closed, the arc-shaped protrusion is located in the placement area, and a receiving space is formed between the arc-shaped protrusion and the placement area, and the reflective surface is formed in the receiving space.

[0005] In a preferred example, the present invention can be further configured as follows: a mounting part placement assembly is provided on the lower mold.

[0006] In a preferred example, the present invention can be further configured as follows: the mounting member placement assembly includes a configuration member, a first annular groove is opened at the center of the bottom of the inner wall of the placement area, and a second annular groove is opened at the bottom of the inner wall of the first annular groove; The configuration member is placed at the second annular groove, and the configuration member includes a placement plate and a shaping plate, the shaping plate is integrally arranged on the top of the placement plate, and the straight line where the central axis of the shaping plate is located is collinear with the straight line where the central axis of the placement plate is located; The height of the placement plate is equal to the height of the second annular groove, the top surface of the shaping plate is arc-shaped, and the surface where the top surface of the shaping plate is located is coplanar with the surface where the inner wall of the placement area is located; A plurality of first through holes are evenly formed at the bottom of the inner wall of the first annular groove; The mounting interface is placed at the bottom of the inner wall of the first annular groove, and the hole position on the mounting interface corresponds to the position of the first through hole.

[0007] In a preferred example, the present invention can be further configured as follows: six threaded blind holes are evenly arranged around the central axis of the plane where the top of the upper mold is located.

[0008] In a preferred example, the present invention can be further configured as follows: four positioning pins are provided on the lower mold and the upper mold.

[0009] A method for using a reflective surface manufacturing mold, applied to the manufacturing mold according to any one of claims 1 to 5, the method comprising: S1: Fix the lower die 12 on a processing table, and fix the upper die 11 on a spinning machine; S2: Place the configuration block; S3: Pressing the radiation surface metal mold onto the mold surface, and manufacturing the hemispherical reflective surface by a spinning process; S4: Cut the carbon fiber prepreg and sandwich honeycomb into the shape and size specified in the drawing; S5: Working in an environment with an ambient temperature of 18 to 2 degrees Celsius, apply a twill carbon fiber prepreg with a single-layer density of 200 grams per square meter to the surface of the lower mold, and then apply unidirectional carbon fiber prepreg with a density of 150 grams per square meter in turn, and lay them alternately at an angle of plus or minus 45 degrees. A total of six layers of unidirectional carbon fiber prepreg are laid; S6: Working in an environment with an ambient temperature of 18 degrees Celsius to 2 degrees Celsius, lay a layer of epoxy resin film on the basis of S5, lay the cut honeycomb sandwich on the epoxy resin film, and place the installation interface; S7: Based on S6, a vacuum bag film layer is provided on the mold surface, and the honeycomb layer or the embedded interface layer is tightly connected with the adhesive film layer by using vacuum pressure; S8: Wrap the prepreg layers reserved at the upper opening of the mold inwards in sequence, and wrap the edges of the honeycomb layer therein; S9: Place a 0.1mm copper foil processed by spinning on the surface of the upper mold, apply an epoxy film layer on the surface in turn, and apply 150 grams per square meter of unidirectional carbon fiber prepreg in turn, and lay them alternately at an angle of plus or minus 45 degrees, for a total of five layers; S10: The upper and lower molds are closed, the mold positioning pins are inserted, the mold is placed in a flat heating press, preheated at 80 degrees Celsius for 20 minutes, the press is closed, the pressure is set to 0.5 MPa, and the vacuum system of the press is turned on; S11: Set the heating temperature to 100 degrees Celsius, keep it warm for 30 minutes, adjust the pressure to 3 MPa, control the heating curve, raise the mold temperature to 130 degrees Celsius within 30 minutes and keep it warm for two hours, then turn off the heating, release the pressure after natural cooling.

[0010] In summary, the present invention includes at least one of the following beneficial technical effects: 1. A mold body is provided, the mold body is divided into an upper mold and a lower mold, and the upper mold and the lower mold are jointly made to form a radar reflecting surface, so that both sides of the radar reflecting surface are smooth surfaces, thereby improving the manufacturing accuracy of the radar reflecting surface.

[0011] 2. By providing a placement component on the lower mold, the connecting parts or mounting parts can be integrally formed with the reflective surface when manufacturing the radar reflective surface, thereby reducing the manufacturing processes and steps and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of this embodiment; Figure 2 yes Figure 1 Schematic diagram of the half-section structure; Figure 3 yes Figure 1 Schematic diagram of the structure of the middle and lower molds; Figure 4 yes Figure 3 A schematic diagram of a structure in which the preparation parts are removed; Figure 5 It is a schematic diagram of the product structure in this embodiment.

[0013] In the figure, 1. mold body; 11. upper mold; 12. lower mold; 111. raised portion; 121. placement area; 2. accommodating space; 3. placement component; 31. preparation part; 32. first annular groove; 33. second annular groove; 311. placement plate; 312. shaping plate; 34. first through hole; 4. threaded blind hole; 5. positioning pin. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0015] Example: Reference Figure 1 The present invention discloses a reflective surface manufacturing mold and a method for using the reflective surface manufacturing mold, including a mold body, wherein the mold body includes an upper mold and a lower mold, wherein the middle portion of the bottom of the upper mold extends downward to form an arc-shaped protrusion, and the middle portion of the lower mold is recessed downward to form a placement area.

[0016] When the upper mold and the lower mold are closed, the arc-shaped protrusion is located in the placement area, and a receiving space is formed between the arc-shaped protrusion and the placement area, and the reflective surface is formed in the receiving space.

[0017] The lower mold is provided with a mounting component placement assembly, and the mounting component placement assembly includes a configuration component. A first annular groove is opened at the center of the bottom of the inner wall of the placement area, and a second annular groove is opened at the bottom of the inner wall of the first annular groove.

[0018] The configuration component is placed at the second annular groove, and the configuration component includes a placement plate and a shaping plate. The shaping plate is integrally arranged on the top of the placement plate, and the straight line where the central axis of the shaping plate is located is collinear with the straight line where the central axis of the placement plate is located.

[0019] The height of the placement plate is equal to the height of the second annular groove, the top surface of the shaping plate is arc-shaped, and the surface where the top surface of the shaping plate is located is coplanar with the surface where the inner wall of the placement area is located; a number of first through holes are evenly opened at the bottom of the inner wall of the first annular groove; the installation interface is placed at the bottom of the inner wall of the first annular groove, and the hole position on the installation interface corresponds to the position of the first through hole.

[0020] The plane where the top of the upper die is located is evenly provided with six threaded blind holes around its central axis. The lower die and the upper die are jointly provided with four positioning pins.

[0021] The use method of the reflective surface production mold includes: S1: Fix the lower die 12 on a processing table, and fix the upper die 11 on a spinning machine; S2: Place the configuration block; S3: Pressing the radiation surface metal mold onto the mold surface, and manufacturing the hemispherical reflective surface by a spinning process; S4: Cut the carbon fiber prepreg and sandwich honeycomb into the shape and size specified in the drawing; S5: Working in an environment with an ambient temperature of 18 to 2 degrees Celsius, apply a twill carbon fiber prepreg with a single-layer density of 200 grams per square meter to the surface of the lower mold, and then apply unidirectional carbon fiber prepreg with a density of 150 grams per square meter in turn, and lay them alternately at an angle of plus or minus 45 degrees. A total of six layers of unidirectional carbon fiber prepreg are laid; S6: Working in an environment with an ambient temperature of 18 degrees Celsius to 2 degrees Celsius, lay a layer of epoxy resin film on the basis of S5, lay the cut honeycomb sandwich on the epoxy resin film, and place the installation interface; S7: Based on S6, a vacuum bag film layer is provided on the mold surface, and the honeycomb layer or the embedded interface layer is tightly connected with the adhesive film layer by using vacuum pressure; S8: Wrap the prepreg layers reserved at the upper opening of the mold inwards in sequence, and wrap the edges of the honeycomb layer therein; S9: Place a 0.1mm copper foil processed by spinning on the surface of the upper mold, apply an epoxy film layer on the surface in turn, and apply 150 grams per square meter of unidirectional carbon fiber prepreg in turn, and lay them alternately at an angle of plus or minus 45 degrees, for a total of five layers; S10: The upper and lower molds are closed, the mold positioning pins are inserted, the mold is placed in a flat heating press, preheated at 80 degrees Celsius for 20 minutes, the press is closed, the pressure is set to 0.5 MPa, and the vacuum system of the press is turned on; S11: Set the heating temperature to 100 degrees Celsius, keep it warm for 30 minutes, adjust the pressure to 3 MPa, control the heating curve, raise the mold temperature to 130 degrees Celsius within 30 minutes and keep it warm for two hours, then turn off the heating, release the pressure after natural cooling.

[0022] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A reflective surface manufacturing mold, characterized in that: The mold body (1) comprises an upper mold (11) and a lower mold (12), wherein the middle portion of the bottom of the upper mold (11) extends downward to form an arc-shaped protrusion (111), and the middle portion of the lower mold (12) is recessed downward to form a placement area (121); When the upper mold (11) and the lower mold (12) are closed, the arc-shaped protrusion (111) is located in the placement area (121), and a receiving space (2) is formed between the arc-shaped protrusion (111) and the placement area (121), and the reflective surface is formed in the receiving space (2).

2. A reflective surface manufacturing mold according to claim 1, characterized in that: The lower mold (12) is provided with a mounting component placement assembly (3).

3. A reflective surface manufacturing mold according to claim 2, characterized in that: The mounting member placement assembly (3) comprises a configuration member (31), a first annular groove (32) is provided at the center of the bottom of the inner wall of the placement area (121), and a second annular groove (33) is provided at the bottom of the inner wall of the first annular groove (32); The configuration component (31) is placed at the second annular groove (33), the configuration component (31) comprises a placement plate (311) and a shaping plate (312), the shaping plate (312) is integrally arranged on the top of the placement plate (311), and the straight line where the central axis of the shaping plate (312) is located is collinear with the straight line where the central axis of the placement plate (311) is located; The height of the placement plate (311) is equal to the height of the second annular groove (33); the top surface of the shaping plate (312) is arc-shaped; the surface where the top surface of the shaping plate (312) is located is coplanar with the surface where the inner wall of the placement area (121) is located; A plurality of first through holes (34) are evenly formed at the bottom of the inner wall of the first annular groove (32); The mounting interface is placed at the bottom of the inner wall of the first annular groove (32), and the hole position on the mounting interface corresponds to the position of the first through hole (34).

4. A reflective surface manufacturing mold according to claim 3, characterized in that: Six threaded blind holes (4) are evenly arranged around the central axis of the plane where the top of the upper die (11) is located.

5. A reflective surface manufacturing mold according to claim 4, characterized in that: Four positioning pins (5) are provided on the lower die (12) and the upper die (11).

6. A method for using a reflective surface manufacturing mold, applied to the manufacturing mold according to any one of claims 1 to 5, the method comprising: S1: fixing the lower die (12) on a processing table, and fixing the upper die (11) on a spinning machine; S2: Place the configuration block; S3: Pressing the radiation surface metal mold onto the mold surface, and manufacturing the hemispherical reflective surface by a spinning process; S4: Cut the carbon fiber prepreg and sandwich honeycomb into the shape and size specified in the drawing; S5: Working in an environment with an ambient temperature of 18 to 2 degrees Celsius, apply a twill carbon fiber prepreg with a single-layer density of 200 grams per square meter to the surface of the lower mold, and then apply unidirectional carbon fiber prepreg with a density of 150 grams per square meter in turn, and lay them alternately at an angle of plus or minus 45 degrees. A total of six layers of unidirectional carbon fiber prepreg are laid; S6: Working in an environment with an ambient temperature of 18 degrees Celsius to 2 degrees Celsius, lay a layer of epoxy resin film on the basis of S5, lay the cut honeycomb sandwich on the epoxy resin film, and place the installation interface; S7: Based on S6, a vacuum bag film layer is provided on the mold surface, and the honeycomb layer or the embedded interface layer is tightly connected with the adhesive film layer by using vacuum pressure; S8: Wrap the prepreg layers reserved at the upper opening of the mold inwards in sequence, and wrap the edges of the honeycomb layer therein; S9: Place a 0.1mm copper foil processed by spinning on the surface of the upper mold, apply an epoxy film layer on the surface in turn, and apply 150 grams per square meter of unidirectional carbon fiber prepreg in turn, and lay them alternately at an angle of plus or minus 45 degrees, for a total of five layers; S10: The upper and lower molds are closed, the mold positioning pins are inserted, the mold is placed in a flat heating press, preheated at 80 degrees Celsius for 20 minutes, the press is closed, the pressure is set to 0.5 MPa, and the vacuum system of the press is turned on; S11: Set the heating temperature to 100 degrees Celsius, keep it warm for 30 minutes, adjust the pressure to 3 MPa, control the heating curve, raise the mold temperature to 130 degrees Celsius within 30 minutes and keep it warm for two hours, then turn off the heating, release the pressure after natural cooling.

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