Antenna reflector forming assembly mold and antenna reflector forming assembly method

Abstract

This invention provides an antenna reflector forming and assembly mold and a method for forming and assembling an antenna reflector. The mold includes a forming mold, a surrounding strip, positioning lugs, lug positioning pins, and a back rib positioning plate. The forming mold has a profile extension area and a horizontal extension area on its front side. The lug positioning pins include long lug positioning pins and short lug positioning pins. The lug positioning pins are used to connect the positioning lugs and the profile extension area through the first lug positioning hole and the second lug positioning hole. This type of mold can be used to form the inner skin of the reflector, the honeycomb sandwich structure of the reflector, and also to glue the back rib of the reflector, so that one mold can meet the needs of different states of reflector forming, gluing and assembly. This mold has the advantages of simple structure and low design difficulty, and can achieve multiple uses with one mold. The positioning reference of the reflector profile is unified in the states of inner skin forming, honeycomb sandwich forming and back rib gluing, and the antenna reflector profile has higher precision and more stable quality.

Description

Technical Field

[0001] This invention relates to the field of composite material reflector molding and assembly molds, specifically to an antenna reflector molding and assembly mold and an antenna reflector molding and assembly method, and particularly to a high-precision antenna reflector molding and assembly mold. Background Technology

[0002] With the continuous advancement and development of satellite communications, the demand for larger apertures and higher surface precision of various antenna reflectors is increasing. Traditional metal antenna reflectors can no longer meet the current high-precision requirements. Carbon fiber composite material skin aluminum honeycomb sandwich structure antenna reflectors have advantages such as light weight, high strength, and high resistance to thermal deformation. This type of antenna reflector has become the main antenna reflector structure.

[0003] Currently, the manufacturing of high-precision carbon fiber skin aluminum honeycomb sandwich structure antenna reflectors mainly relies on high-precision molding and assembly tooling. Traditional antenna reflector molding and bonding requires the design of multiple molds, such as skin molding mold, sandwich structure bonding mold, and back rib bonding mold, which results in high mold costs.

[0004] Therefore, designing a versatile mold that can be used in assembly processes such as skin forming, sandwich structure bonding, and back rib bonding is an urgent problem to be solved. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide an antenna reflector forming and assembly mold and an antenna reflector forming and assembly method.

[0006] An antenna reflector forming and assembly mold provided by the present invention includes a forming mold, a surrounding strip, a positioning lug, a lug positioning pin, and a back rib positioning plate;

[0007] The front side of the molding die is provided with a profile extension area along the generatrix of the reflector profile and a horizontal extension area parallel to the plane on which the reflector is placed.

[0008] The positioning ear has a stepped structure, and its lower surface is detachably connected to the surface extension area. The positioning ear is provided with a first ear positioning hole, which includes a first circular positioning hole and an oblong positioning hole.

[0009] The number of positioning ear pieces is multiple; the multiple positioning ear pieces are arranged in pairs opposite each other, and the waist-shaped holes of the oppositely arranged positioning ear pieces are collinear in the waist-shaped direction;

[0010] The reflector back rib positioning plate is installed in the horizontal extension area.

[0011] The surround strip is installed on the surface extension area. There is a first-size surface compensation area between the inner side of the surround strip and the outer shape of the reflector. The surround strip is a discontinuous structure. At the positioning lug, there is a second-size gap on one side.

[0012] The extended area of ​​the profile is provided with a second ear plate positioning hole, which is a second circular positioning hole. The second circular positioning hole can match the first circular positioning hole and / or the waist-shaped positioning hole on the positioning ear plate.

[0013] The ear-plate positioning pin includes a long ear-plate positioning pin and a short ear-plate positioning pin; the ear-plate positioning pin is used to connect the positioning ear plate and the profile extension area through the first ear-plate positioning hole and the second ear-plate positioning hole.

[0014] Preferably, the forming mold is made of carbon structural steel.

[0015] Preferably, based on the difference between the expansion coefficient of the reflector skin and the expansion coefficient of the molding die, the molding die is set with a mold thermal compensation coefficient, and the scaling origin of the molding die is set at the lowest point of the surface corresponding to the reflector placement plane.

[0016] The central axis of the relatively arranged positioning ear pieces passes through the scaling origin of the molding die.

[0017] Preferably, the reverse side of the forming mold has multiple ball head support points.

[0018] Preferably, there are three ball head support points, and the three ball head support points are arranged in a triangle to support the molding mold.

[0019] Preferably, the reverse side of the molding die is also provided with a planar support point, wherein the ball head support point is 10mm to 15mm higher than the planar support point.

[0020] Preferably, the horizontal extension area is provided with multiple reference blocks, and each reference block is provided with a reference hole with a tapered angle.

[0021] Preferably, the number of reference blocks is four, arranged in pairs opposite each other, with the sides of the two opposite reference blocks being coplanar.

[0022] Preferably, the first dimension is 10mm to 15mm and the second dimension is 5mm to 10mm.

[0023] An antenna reflector molding and assembly method according to the present invention includes the antenna reflector molding and assembly mold, and further includes the following method:

[0024] When the skin is being formed, each lug performs the following operations to position the skin:

[0025] A short ear-shaped positioning pin is used to connect the first ear-shaped positioning hole to a second circular positioning hole;

[0026] The waist-shaped positioning hole is connected to another second circular positioning hole by using another short ear-shaped positioning pin. This second circular positioning hole is closer to the center of the molding die.

[0027] At this point, the skin is positioned between the positioning ear piece and the molding die;

[0028] When the sandwich structure is being bonded, each lug undergoes the following operation to position the sandwich structure:

[0029] A long lug locating pin is used to connect the waist-shaped locating hole and a second circular locating hole; the second circular locating hole is a second circular locating hole that is closer to the center of the forming mold.

[0030] At this time, the sandwich structure is located between the positioning ear piece and the molding mold;

[0031] When the back rib is being assembled, a short ear-shaped locating pin is used to connect the waist-shaped locating hole and a second circular locating hole; the second circular locating hole is a second circular locating hole that is closer to the center of the forming mold.

[0032] At this point, the sandwich structure is located between the positioning ear and the molding mold. After this process is completed, a reflector is formed.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. This invention has a simple structure and low design difficulty. It can meet various working conditions such as skin forming, sandwich structure bonding, and back rib assembly, exhibiting strong versatility. Specifically, the two second circular positioning holes can be selectively connected to the first circular positioning hole and the waist-shaped positioning hole according to different working conditions and requirements. Furthermore, when connected to the waist-shaped positioning hole, they can also be selectively connected to different positions of the waist-shaped positioning hole according to different working conditions and requirements. In addition, the connecting parts for the two second circular positioning holes can also be selected from long ear-plate positioning pins and short ear-plate positioning pins according to different working conditions and requirements.

[0035] 2. The high-precision reflector forming and assembly mold of the present invention has high structural strength and rigidity, and its placement is uniform and stable.

[0036] 3. The present invention has a simple structure, is easy to process, and has a low cost. Attached Figure Description

[0037] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0038] Figure 1 This is a schematic diagram of the structure of the present invention.

[0039] Figure 2 for Figure 1 A schematic diagram of the inverted structure.

[0040] Figure 3 for Figure 1 A partial schematic diagram.

[0041] The diagram shows:

[0042]

[0043] Detailed Implementation

[0044] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0045] This invention provides an antenna reflector forming and assembly mold, including a forming mold 1, a surrounding strip 2, a positioning lug 3, a lug positioning pin 4, and a back rib positioning plate 5;

[0046] The front surface of the molding mold 1 is provided with a profile extension area 10 along the generatrix of the reflector profile and a horizontal extension area 9 parallel to the reflector placement plane.

[0047] The positioning ear 3 has a thin stepped structure, and its lower surface is detachably connected to the surface extension area 10. When the two are connected, the lower surface coincides with the surface of the surface extension area 10. The positioning ear 3 is provided with a first ear positioning hole, which includes a first circular positioning hole and an oblong positioning hole. There are multiple positioning ear 3s. The multiple positioning ear 3s are arranged opposite each other in pairs, and the oblong holes of the oppositely arranged positioning ear 3s are collinear in the oblong direction. In a preferred embodiment, the forming assembly mold is provided with four positioning ear 3s, of which the oblong holes of two positioning ear 3s are collinear in the oblong direction, and the oblong holes of the other two positioning ear 3s are collinear in the oblong direction. The oblong directions of the two sets of oblong holes are cross-shaped and the intersection point passes through the scaling origin of the forming mold 1.

[0048] The reflector back rib positioning plate 5 is installed in the horizontal extension area 9.

[0049] The surround strip 2 is installed on the surface extension area 10. There is a surface compensation area 11 of the first size between the inner side of the surround strip 2 and the outer shape of the reflector. The surround strip 2 is a discontinuous structure. At the positioning lug 3, there is a gap of the second size on one side. In a preferred embodiment, the first size is 10mm to 15mm and the second size is 5mm to 10mm.

[0050] The profile extension area 10 is provided with a second ear-shaped positioning hole, which is a second circular positioning hole. The second circular positioning hole can match the first circular positioning hole and / or the waist-shaped positioning hole on the positioning ear 3. In a preferred embodiment, there are two second circular positioning holes, each of which can match the first circular positioning hole and the waist-shaped positioning hole, but only one of them is connected at a time.

[0051] The ear plate positioning pin 4 includes a long ear plate positioning pin and a short ear plate positioning pin; the ear plate positioning pin 4 is used to connect the positioning ear plate 3 and the profile extension area 10 through the first ear plate positioning hole and the second ear plate positioning hole.

[0052] The forming mold 1 is made of carbon structural steel. The forming mold 1 has a polygonal shape, preferably a dodecagon or a near-circular shape. The forming mold 1 includes multiple component plates 12, which are arranged perpendicularly to each other to form a quadrilateral honeycomb structure. Because the forming mold 1 is composed of multiple component plates 12 and uses a simple vertical arrangement internally, it has low processing difficulty, low design difficulty, and low cost. The component plates 12 are provided with weight-reducing holes, which also serve a ventilation function. Based on the difference between the expansion coefficient of the reflector skin and the expansion coefficient of the forming mold 1, a mold thermal compensation coefficient is set for the forming mold 1. The scaling origin of the forming mold 1 is set at the lowest point of the profile corresponding to the reflector placement plane; the central axis of the relatively arranged positioning lugs 3 passes through the scaling origin of the forming mold 1.

[0053] The molding mold 1 has multiple ball head support points 6 on its reverse side. In a preferred embodiment, there are three ball head support points 6 arranged in a triangle to support the molding mold 1.

[0054] The reverse side of the molding mold 1 is also provided with a planar support point 7. The ball head support point 6 is 10mm to 15mm higher than the planar support point 7. In use, the three ball head support points 6 mainly contact the outside first. If the three ball head support points 6 contact the ground or test platform first, the planar support point 7 is used to adjust the flatness of the molding mold 1. If the ground or test platform is inclined, it can be adjusted by placing a pad under the planar support point 7.

[0055] The horizontal extension area 9 is provided with multiple reference blocks 8, each reference block 8 having a reference hole with a tapered angle. In a preferred embodiment, the number of reference blocks 8 is four, arranged in pairs opposite to each other. Two reference blocks 8 arranged opposite each other are defined as a group, and the sides of the two reference blocks 8 in each group are located on the same plane. The planes containing the sides of the two groups of reference blocks 8 are defined as a first plane and a second plane, respectively. The first plane and the second plane are perpendicular to each other, and both the first plane and the second plane are perpendicular to the horizontal plane. That is, the first plane, the second plane, and the horizontal plane can form a three-dimensional coordinate system.

[0056] The manufacturing steps of this invention are as follows:

[0057] S1. Select ordinary carbon structural steel as the material for forming mold 1 based on the shape, structure, and size requirements of the antenna reflector, and confirm the thermal expansion coefficients of the steel and the inner skin of the antenna reflector, and calculate the compensation coefficient of forming mold 1.

[0058] S2. Set the antenna reflector placement plane according to the shape and structure of the antenna reflector, find the lowest point of the corresponding plane, and set the scaling origin of the forming mold 1 at this point.

[0059] S3. Based on the size and shape of the reflector, set three ball head support points 6 and multiple planar support points 7 at appropriate positions, wherein the ball head support points 6 are 10mm higher than the planar support points 7.

[0060] S4. The molding mold 1 has a profile extension area 10 along the generatrix direction of the antenna reflector profile and a horizontal extension area 9 parallel to the reflector placement plane.

[0061] S5. The horizontal extension area 9 is provided with four reference blocks 8. The sides of two relative reference blocks 8 are coplanar, and the sides of the other two relative reference blocks 8 are coplanar. The two sets of sides are perpendicular to the upper surface of the reference blocks 8. Each reference block 8 is provided with a reference hole with a cone angle.

[0062] S6. Four thin-plate stepped positioning lugs 3 are set according to the size and shape of the reflector. The lower surface of the positioning lugs 3 coincides with the surface of the molded mold 1's extension area 10. Each positioning lug 3 has a circular and an oblong positioning hole. The oblong holes of two positioning lugs 3 are collinear in their oblong directions, and the oblong holes of the other two positioning lugs 3 are also collinear in their oblong directions. The oblong directions of the two sets of oblong holes form a cross shape, and the intersection point passes through the scaling origin of the molded mold 1. At the same time, the surface extension area 10 is provided with lug positioning holes. The lug positioning holes are two circular positioning holes that can correspond to the circular and oblong holes of the positioning lugs 3.

[0063] S7. Select different hole positions and long and short lug positioning pins 4 according to different states of antenna reflector molding and assembly. Select the matching relationship between the circular and waist-shaped positioning holes on the positioning lug 3 and the two circular positioning holes on the surface extension area 10 according to different states of antenna reflector molding and assembly. Then install the positioning lug 3 onto the surface extension area 10.

[0064] S8. Install the surrounding strip 2 in the surface extension area 10 of the forming mold 1. There is a 10mm surface compensation area between the inner side of the surrounding strip 2 and the outer shape of the reflector, and a 10mm gap is left on one side at the positioning ear 3.

[0065] S9. According to the structure and size of the antenna reflector back rib, set a suitable back rib positioning plate 5 in the horizontal extension area 9 of the forming mold 1.

[0066] This invention has a simple structure and low design difficulty. It can be used in various working conditions such as skin forming, sandwich structure bonding, and back rib assembly. Specifically, when in the skin forming condition, each lug performs the following operation to position the skin:

[0067] A short ear-shaped positioning pin 4 is used to connect the first ear-shaped positioning hole and a second circular positioning hole; another short ear-shaped positioning pin 4 is used to connect the waist-shaped positioning hole and another second circular positioning hole, which is a second circular positioning hole closer to the center of the molding die 1.

[0068] At this time, the skin is located between the positioning ear piece 3 and the forming mold 1.

[0069] When the sandwich structure is being bonded, each lug undergoes the following operation to position the skin:

[0070] A long ear-shaped positioning pin 4 is used to connect the waist-shaped positioning hole and a second circular positioning hole; the second circular positioning hole is a second circular positioning hole that is closer to the center of the forming mold 1.

[0071] At this time, the sandwich structure is located between the positioning ear piece 3 and the molding mold 1.

[0072] When the back rib is being assembled, a short ear-shaped positioning pin 4 is used to connect the waist-shaped positioning hole and a second circular positioning hole; the second circular positioning hole is a second circular positioning hole that is closer to the center of the forming mold 1.

[0073] At this point, the sandwich structure is located between the positioning ear 3 and the forming mold 1. After this process is completed, a reflector is formed. In summary, the two second circular positioning holes of the present invention can be selectively connected to the first circular positioning hole and the waist-shaped positioning hole according to different working conditions and requirements. Furthermore, when connected to the waist-shaped positioning hole, they can also be selectively connected to different positions of the waist-shaped positioning hole according to different working conditions and requirements. In addition, the connecting parts of the two second circular positioning holes can also be selected from long ear positioning pins and short ear positioning pins according to different working conditions and requirements.

[0074] The high-precision reflector forming and assembly mold of the present invention has high structural strength and rigidity, and its placement is uniform and stable. For example, the selection of carbon structural steel for the forming mold 1 and the arrangement of the internal component plates 12 perpendicular to each other to form a quadrilateral honeycomb structure can ensure the structural strength and rigidity of the present invention. The design of the three ball head support points 6 arranged in a triangle and the planar support points 7 can adjust the flatness of the forming mold 1, ensuring that the placement of the present invention is uniform and stable.

[0075] In addition, the present invention has the advantages of being easy to process, reusable multiple times, and low cost; it can also be used to mold and bond large-aperture antenna reflectors, improving surface accuracy and product quality.

[0076] In summary, the high-precision antenna reflector molding and assembly mold of this invention can be optimized according to the constraints such as the actual production form, structure, and size requirements of carbon fiber skin aluminum honeycomb sandwich antenna reflectors. This type of mold can be used to mold the inner skin of the reflector, mold the honeycomb sandwich structure of the reflector, and also glue the back rib of the reflector, realizing that one mold can meet the needs of different states of reflector molding, gluing, and assembly. This mold form has the advantages of simple structure, low design difficulty, and low cost, and can achieve multiple uses with one mold. The positioning reference of the reflector surface is unified in the states of inner skin molding, honeycomb sandwich molding, and back rib gluing, and the antenna reflector surface has higher precision and more stable quality.

[0077] The present invention also provides a method for forming and assembling an antenna reflector, including the antenna reflector forming and assembling mold, and further including the following method:

[0078] When the skin is being formed, each lug performs the following operations to position the skin:

[0079] A short ear-shaped positioning pin 4 is used to connect the first ear-shaped positioning hole and a second circular positioning hole;

[0080] Another short ear-shaped positioning pin 4 is used to connect the waist-shaped positioning hole and another second circular positioning hole, which is a second circular positioning hole that is closer to the center of the molding die 1.

[0081] At this time, the skin is located between the positioning ear piece 3 and the molding mold 1;

[0082] When the sandwich structure is being bonded, each lug undergoes the following operation to position the sandwich structure:

[0083] A long ear-shaped positioning pin 4 is used to connect the waist-shaped positioning hole and a second circular positioning hole; the second circular positioning hole is a second circular positioning hole that is closer to the center of the forming mold 1.

[0084] At this time, the sandwich structure is located between the positioning ear piece 3 and the molding mold 1;

[0085] When the back rib is being assembled, a short ear-shaped positioning pin 4 is used to connect the waist-shaped positioning hole and a second circular positioning hole; the second circular positioning hole is a second circular positioning hole that is closer to the center of the forming mold 1.

[0086] At this time, the sandwich structure is located between the positioning ear piece 3 and the molding mold 1. After the process is completed, a reflector is formed.

[0087] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0088] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A method of forming an antenna reflector assembly, comprising: The application relates to an antenna reflector forming assembly die, The assembly die comprises a forming die (1), a surrounding strip (2), a positioning lug (3), a lug positioning pin (4) and a back rib positioning plate (5); The front surface of the forming die (1) is provided with a profile extension area (10) along the profile generatrix direction of the reflector and a horizontal extension area (9) parallel to the reflector placement plane; The positioning lug (3) is in a stepped structure, the lower surface is detachably connected with the profile extension area (10), the positioning lug (3) is provided with first lug positioning holes, and the first lug positioning holes comprise first circular positioning holes and waist-shaped positioning holes; The number of the positioning lugs (3) is multiple; two positioning lugs (3) are oppositely arranged, and the waist-shaped holes of the oppositely arranged positioning lugs (3) are collinear in the waist-shaped direction; The reflector back rib positioning plate (5) is installed on the horizontal extension area (9); The surrounding strip (2) is installed on the profile extension area (10), and a first size profile compensation area (11) is formed between the inner side surface of the surrounding strip (2) and the reflector contour; the surrounding strip (2) is in a non-continuous structure, and a second size gap is formed on one side of the positioning lug (3); Second lug positioning holes are arranged on the profile extension area (10), the second lug positioning holes are second circular positioning holes, and the second circular positioning holes can be matched with the first circular positioning holes and / or the waist-shaped positioning holes on the positioning lug (3); The lug positioning pin (4) comprises long lug positioning pins and short lug positioning pins; the lug positioning pin (4) is used for connecting the positioning lug (3) and the profile extension area (10) through the first lug positioning holes and the second lug positioning holes; The application further relates to a method as follows: When the skin forming condition is reached, each lug is operated as follows for positioning the skin: One short lug positioning pin (4) is used for connecting a first circular positioning hole and a second circular positioning hole; Another short lug positioning pin (4) is used for connecting a waist-shaped positioning hole and another second circular positioning hole which is closer to the center of the forming die (1); At this time, the skin is located between the positioning lug (3) and the forming die (1); When the sandwich structure bonding condition is reached, each lug is operated as follows for positioning the sandwich structure: One long lug positioning pin (4) is used for connecting a waist-shaped positioning hole and a second circular positioning hole which is closer to the center of the forming die (1); At this time, the sandwich structure is located between the positioning lug (3) and the forming die (1); When the back rib assembly condition is reached, one short lug positioning pin (4) is used for connecting a waist-shaped positioning hole and a second circular positioning hole which is closer to the center of the forming die (1); At this time, the sandwich structure is located between the positioning lug (3) and the forming die (1), and the back rib assembly process is completed to form the reflector.

2. The method of claim 1, wherein The forming die (1) is made of carbon structural steel.

3. The method of claim 1, wherein According to the difference between the expansion coefficient of the reflector skin and the expansion coefficient of the forming die (1), a die thermal compensation coefficient is arranged on the forming die (1), and the zoom origin of the forming die (1) is arranged at the lowest point of the profile corresponding to the reflector placement plane. The middle axis of the positioning ear (3) is arranged opposite to the zoom origin of the forming die (1).

4. The method of claim 1, wherein The reverse surface of the forming die (1) is provided with a plurality of ball head support points (6).

5. The method of claim 4, wherein The plurality is three, and the three ball head support points (6) are arranged in a triangular shape to support the forming die (1).

6. The method of claim 5, wherein, The reverse surface of the forming die (1) is also provided with a plane support point (7), and the ball head support point (6) is higher than the plane support point (7) by 10-15 mm.

7. The method of claim 1, wherein A plurality of reference blocks (8) are arranged on the horizontal extension area (9), and each reference block (8) is provided with a tapered reference hole.

8. The method of claim 7, wherein: The number of the reference blocks (8) is four, and two are arranged opposite to each other, and the side surfaces of the two opposite reference blocks (8) are coplanar.

9. The method of claim 1, wherein The first size is 10-15 mm, and the second size is 5-10 mm.

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