Compression molding die for empennage of unmanned aerial vehicle

Abstract

The utility model relates to the field of forming dies, in particular to an unmanned aerial vehicle empennage compression molding die which comprises an upper die and a lower die matched with the upper die. The top of the lower mold is concaved inwards to form an empennage lower cavity matched with the bottom of the empennage of the unmanned aerial vehicle, and a positioning assembly matched with the empennage of the unmanned aerial vehicle is arranged on the peripheral side of the empennage lower cavity; an empennage upper cavity matched with the top of the empennage is formed in the bottom of the upper mold, and the upper mold is matched with the positioning assembly; the unmanned aerial vehicle empennage is formed by arranging the upper mold and the lower mold, it is guaranteed that the unmanned aerial vehicle empennage is formed more evenly and reliably, meanwhile, the positioning assembly is additionally arranged to position the unmanned aerial vehicle empennage, and an embedded part of the unmanned aerial vehicle empennage is conveniently and accurately placed, so that the forming quality and forming efficiency of the unmanned aerial vehicle empennage are improved, and the actual production requirement is met.

Description

Technical Field

[0001] The utility model relates to the field of forming molds, in particular to a UAV tail wing compression molding mold. Background Art

[0002] With the continuous development of UAV technology, small UAVs made of composite materials are becoming more and more widely used. The functional structure of the tail wing of small UAV is more complex and is required to have functions such as folding. Multiple positioning parts need to be embedded inside the tail wing. The overall structure tends to be integrated, with high requirements on dimensional accuracy and appearance quality, and increasingly higher requirements on production efficiency and cost control.

[0003] Most traditional methods for forming the tail wing of a UAV are to first use the upper and lower skin forming molds to form the upper and lower skins of the tail wing respectively, and then use the closing tooling to bond the internal metal parts, beams, ribs and the upper and lower skins together. During the secondary bonding process, it is difficult to control the amount of glue and the positioning accuracy of the parts, the weight of the structure cannot be controlled, and the product size cannot be fully controlled after the secondary bonding. Adding a closing process and a set of closing tooling will increase the production cycle and the number of tooling.

[0004] For example, the invention patent application with publication number CN110193956A discloses a method for forming a small UAV composite vertical tail wing, and proposes using prepreg to first lay a lower skin on the surface of one side of the mold, and then lay a foam prefabricated layer and an upper skin, and use a vacuum bag pressing process, a vacuum bag is used for packaging, vacuum is drawn and pressure is applied, and the tail wing is put into an oven for forming, so as to achieve the purpose of one-time forming of the tail wing. However, in this forming method, only the lower surface of the tail wing is the mold surface, and the upper surface shape is a non-mold surface, which makes it impossible to guarantee the overall shape of the product and the surface quality of one side, and the upper surface needs post-processing after forming.

[0005] At present, the UAV tail structure has more functional requirements, and more embedded parts and metal parts need to be embedded. This production process is no longer suitable for the current small UAV composite tail with high requirements for size and surface quality. Utility Model Content

[0006] The utility model aims to provide a UAV tail wing compression molding die to solve the problem of low molding quality of the UAV tail wing.

[0007] The utility model is to achieve the above-mentioned technical solution:

[0008] A UAV tail wing compression molding die, comprising an upper die and a lower die matched with the upper die;

[0009] The top of the lower mold is concave to form a tail lower cavity that matches the bottom of the drone tail, and a positioning component that matches the drone tail is arranged around the tail lower cavity;

[0010] The bottom of the upper mold is provided with an upper tail cavity matching the top of the tail, and the upper mold cooperates with the positioning assembly.

[0011] It is further defined that the positioning assembly includes a first accessory positioning groove, the first accessory positioning groove is opened at the side end of the lower mold along the width direction of the lower mold, the first accessory positioning groove is connected to the lower cavity of the tail wing, the first accessory positioning groove is located on the outer side of the upper mold, and a first accessory connecting hole is opened on the outer side of the upper mold.

[0012] It is further defined that a positioning hole is provided on the lower mold, the positioning hole is provided along the width direction of the lower mold, and the positioning hole passes through the first accessory positioning groove.

[0013] It is further defined that the positioning assembly also includes a first positioning block, which is arranged on the peripheral side of the lower cavity of the tail wing and connected to the lower cavity of the tail wing. The first positioning block is arranged along the length direction of the lower mold, and the bottom of the upper mold is provided with a positioning upper cavity matching the top of the first positioning block.

[0014] It is further defined that the first positioning block is detachably connected to the lower mold.

[0015] It is further defined that the number of the upper molds and the number of the lower molds are both two, the two lower molds are symmetrically arranged around the midpoints of their short sides, the two upper molds are symmetrically arranged, the upper molds and the lower molds are arranged one-to-one, and the two lower molds and the two upper molds are all integrated structures.

[0016] It is further defined that a wedge block is provided between the two lower molds, the wedge block is communicated with the lower cavity of the tail, and a wedge block groove matching with the top of the wedge block is provided between the two upper molds, the wedge block groove is communicated with the upper cavity of the tail.

[0017] It is further defined that the peripheral sides of the lower mold and the upper mold are both provided with hanging holes and temperature measuring holes, and the temperature measuring holes are located on the peripheral sides of the hanging holes.

[0018] It is further defined that a guide sleeve is provided at the top angle position of the upper end surface of the lower mold, and the guide sleeve is respectively located on the outside of the lower cavity of the tail wing and the outside of the first positioning block, and a guide column matching the guide sleeve is provided at the bottom of the upper mold, and the guide column is located on the outside of the upper cavity of the tail wing and the outside of the positioning upper cavity.

[0019] It is further defined that a glue overflow groove is provided on the upper end surface of the lower mold, and the glue overflow groove is located outside the lower cavity of the tail wing and communicated with the outside.

[0020] Beneficial effects of the utility model:

[0021] 1. The utility model forms the UAV tail wing by setting an upper mold and a lower mold to ensure that the UAV tail wing is formed more evenly and reliably. At the same time, the UAV tail wing is positioned by adding a positioning component to facilitate the accurate placement of the embedded parts of the UAV tail wing, thereby improving the molding quality and molding efficiency of the UAV tail wing and meeting actual production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the UAV tail wing compression molding die of the utility model;

[0023] Figure 2 This is a schematic diagram of the upper mold structure of the utility model;

[0024] Figure 3 This is a schematic diagram of the lower mold structure of the utility model;

[0025] Figure 4 This is a schematic diagram of the wing molding of the UAV of the utility model;

[0026] In the figure: 10-upper mold; 11-upper cavity of tail; 12-first accessory connecting hole; 20-lower mold; 21-lower cavity of tail; 30-first accessory positioning groove; 31-positioning hole; 40-first positioning block; 41-positioning upper cavity; 50-wedge block; 51-wedge block groove; 60-lifting hook; 61-temperature measuring hole; 62-guide sleeve; 63-guide column; 64-overflow glue groove; 70-first foam; 71-second foam; 72-wing beam; 80-first embedded part; 81-second embedded part. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0028] Example 1

[0029] refer to Figure 1 to Figure 4 This embodiment provides a UAV tail wing molding die, including an upper die 10 and a lower die 20 matched with the upper die 10. The UAV tail wing is molded by pressing the upper and lower surfaces, thereby reducing the molding difficulty.

[0030] Among them, the top of the lower mold 20 is recessed inward to form a tail lower cavity 21 that matches the shape of the bottom surface of the UAV tail. On the lower mold 20, a positioning component is arranged on the surrounding side of the tail lower cavity 21. The positioning component is used to position the UAV tail so that the UAV tail can be accurately installed in the tail lower cavity 21.

[0031] The bottom of the corresponding upper mold 10 is recessed inward to form an upper tail cavity 11 that matches the shape of the top surface of the UAV tail, wherein the positioning assembly cooperates with the upper tail cavity 11 so that the UAV tail can also be accurately positioned in the upper tail cavity 11, thereby making it easy to position the UAV tail during molding, and the molding quality is high, meeting actual molding requirements.

[0032] At the same time, the embedded parts in the UAV tail are positioned through the positioning assembly, so that the embedded positions of the corresponding embedded parts can be ensured during the molding process of the UAV tail, and the embedded parts can be prevented from shifting during the molding process, causing the UAV tail molding to fail to meet the requirements.

[0033] Further explanation, the positioning assembly includes a first accessory positioning groove 30, which is used to align the connection end of the drone tail with the side end of the tail lower cavity 21, so that the drone tail is aligned with the tail lower cavity 21 in the vertical direction.

[0034] Specifically, the first accessory positioning groove 30 is opened at the side end of the lower mold 20, and the first accessory positioning groove 30 is located above the tail wing lower cavity 21. The tail wing lower cavity 21 is connected to the outside of the lower mold 20 through the first accessory positioning groove 30, that is, the first accessory positioning groove 30 runs through both sides of the short side wall of the lower mold 20.

[0035] At this time, the first embedded part 80 can also be placed through the first accessory positioning groove 30. For example, the first embedded part 80 can be the folding connection position between the UAV tail and the fuselage. The first embedded part 80 can be accurately positioned through the first accessory positioning groove 30, thereby improving the placement efficiency and reliability of the first embedded part 80 and improving the molding quality of the UAV tail.

[0036] In order to prevent the first embedded part 80 from shaking in the first accessory positioning groove 30 and affecting the molding quality of the UAV tail wing, the first embedded part 80 can be selected to have an interference fit with the first accessory positioning groove 30. Preferably, a positioning hole 31 is opened on the lower mold 20, and the positioning hole 31 is opened along the width direction of the lower mold 20. The positioning hole 31 passes through the first accessory positioning groove 30. Therefore, when the first accessory positioning groove 30 and the first embedded part 80 are matched, the first positioning pin is selected to pass through the first embedded part 80 in the first accessory positioning groove 30 along the positioning hole 31, so as to limit the first embedded part 80 in the first accessory positioning groove 30 and ensure that the first embedded part 80 is stably placed.

[0037] Correspondingly, a first accessory connecting hole 12 is opened at the side end of the upper mold 10, and the upper mold 10 is clamped with the first embedded part 80 through a connecting plate. The upper mold 10 is connected to the connecting plate through the first accessory connecting hole 12, further improving the position limitation of the first embedded part 80.

[0038] Further explanation, the positioning assembly also includes a first positioning block 40, which is located at the top of the lower mold 20, and is recessed downward at the corresponding position of the lower mold 20 to form a positioning lower cavity, so that the first positioning block 40 sinks relative to the length direction of the side end of the UAV tail wing. The first positioning block 40 is located on the outside of the tail wing lower cavity 21 and is connected to the tail wing lower cavity 21, so that the first positioning block 40 can be connected to the UAV tail wing to position the UAV tail wing.

[0039] Specifically, the first positioning block 40 is arranged along the length direction of the lower mold 20. The first positioning block 40 is preferably detachably connected to the lower mold 20. A second embedded part 81 is arranged on the UAV tail in its length direction. The second embedded part 81 is then engaged with the first positioning block 40 to position the second embedded part 81 to ensure that the second embedded part 81 is accurately placed. At the same time, the UAV tail is also positioned in the lateral direction to ensure that the UAV tail is stably and reliably formed.

[0040] Furthermore, in order to improve the connection stability between the second embedded part 81 and the first positioning block 40 , the first positioning block 40 is connected to the second embedded part 81 through a second positioning pin to ensure that the connection of the second embedded part 81 is stable and reliable.

[0041] Correspondingly, the top of the first positioning block 40 is higher than the top of the lower mold 20 , and the upper mold 10 is concave to form an upper positioning cavity 41 , and the upper positioning cavity 41 cooperates with the first positioning block 40 when the mold is closed.

[0042] Thus, the embedded parts can be quickly positioned and fixed by the positioning assembly, thereby improving the molding efficiency and molding quality. At the same time, the upper mold 10 and the lower mold 20 are used to mold the tail wing of the drone in one step, thereby further improving the molding efficiency.

[0043] Further explanation, in order to improve production efficiency, it is preferred that the number of upper molds 10 and the number of lower molds 20 are both two, the two upper molds 10 are connected along their length direction, and the two lower molds 20 are also connected along their length direction. Since it is necessary to set the first embedded part 80 at the side end of the lower mold 20, the two lower molds 20 are centrally symmetrically arranged, and the upper molds 10 and the lower molds 20 are arranged one by one, that is, the two upper molds 10 are also centrally symmetrically arranged.

[0044] When the UAV tail wing is being molded, two UAV tail wings can be molded at the same time, the two upper molds 10 can be integrally molded, and the two lower molds 20 can also be integrally molded.

[0045] In order to avoid mutual influence between the two UAV tail wings, the two lower molds 20 are separated by a wedge block 50. The wedge block 50 is preferably a detachable structure. Correspondingly, a wedge block groove 51 is opened on the upper mold 10 to engage with the wedge block 50. The wedge block groove 51 is connected to the upper cavity 11 of the tail wing, that is, the first positioning block 40 is in contact with the corresponding side end of the wedge block 50.

[0046] In order to facilitate the alignment of the upper mold 10 and the lower mold 20, a guide sleeve 62 is selected to be set at the top angle position of the lower mold 20. The guide sleeve 62 is preferably located at the top angle position close to the first embedded part 80. At this time, the guide sleeves 62 on the two lower molds 20 are symmetrical about the center, and a guide column 63 is set at the top angle position corresponding to the upper mold 10. When the upper mold 10 and the lower mold 20 are matched, the guide column 63 is clamped with the guide sleeve 62 to ensure reliable mold closing.

[0047] In order to facilitate the movement and lifting of the upper mold 10 and the lower mold 20, lifting holes are opened on the side of the upper mold 10 and the side of the lower mold 20 to install the lifting hooks 60. The lifting hooks 60 are respectively arranged on the symmetrical sides of the upper mold 10 and the lower mold 20. At the same time, temperature measuring holes 61 are respectively opened in the upper mold 10 and the lower mold 20. The temperature measuring holes 61 are opened along the width direction of the upper mold 10 and the lower mold 20, which is convenient for temperature measurement during the molding process and temperature control according to the actual temperature to ensure the molding quality.

[0048] A glue overflow groove 64 is also formed on the top end surface of the lower mold 20 . The glue overflow groove 64 is located outside the tail lower cavity 21 and communicates with the outside of the lower mold 20 .

[0049] Working principle:

[0050] In actual work, the upper mold 10 and the lower mold 20 are first cleaned and dried, and then the first positioning block 40 and the wedge block 50 are connected to the lower mold 20. Then, the carbon fiber prepreg of corresponding size needs to be laid in the lower cavity 21 and the upper cavity 11 of the tail wing for pre-pressing.

[0051] An adhesive film is applied in advance on the surfaces of the spar 72 , the first foam 70 , the second foam 71 , the first embedded part 80 and the second embedded part 81 , and excess adhesive is discharged through the adhesive overflow groove 64 to avoid affecting the finished product of the UAV tail wing.

[0052] Then, place the wing beam 72 of the UAV tail wing, the cut first foam 70 and the second foam 71 at the corresponding positions of the tail wing lower cavity 21, and then place the first embedded part 80 and the second embedded part 81. The first embedded part 80 is placed in the first accessory positioning groove 30, and then the first positioning pin is passed through the positioning hole 31 to stably connect the first embedded part 80 with the first accessory positioning groove 30; the second embedded part 81 is matched with the first positioning block 40 and stably connected through the second positioning pin to complete the connection of the embedded parts.

[0053] At the same time, the carbon fiber prepreg at the corresponding positions of the embedded parts and the foam parts (the first foam 70 and the second foam 71) are wrapped on the corresponding embedded parts and the foam parts, and then a trial mold is performed. A temperature measuring device is inserted into the temperature measuring hole 61 to monitor the temperature. After the trial mold is completed, the upper mold 10 is removed, and then the wedge block 50 and the first positioning block 40 are removed for demolding. The demolding is convenient and quick.

[0054] The above is the embodiment of the present application. The above embodiments and the specific parameters in the embodiments are only for the purpose of clearly describing the verification process of the application, and are not intended to limit the scope of patent protection of the present application. The scope of patent protection of the present application is still subject to its claims, and any equivalent structural changes made by using the description and drawings of the present application should be included in the scope of protection of the present application.

Claims

1. A UAV tail wing molding die, characterized in that: It comprises an upper mold (10) and a lower mold (20) matched with the upper mold (10); The top of the lower mold (20) is concave to form a tail lower cavity (21) matching the bottom of the drone tail, and a positioning component matching the drone tail is arranged around the tail lower cavity (21); The bottom of the upper mold (10) is provided with an upper tail cavity (11) matching the top of the tail, and the upper mold (10) cooperates with a positioning assembly.

2. The UAV tail wing compression molding die according to claim 1, characterized in that: The positioning assembly comprises a first accessory positioning groove (30), the first accessory positioning groove (30) being arranged at the side end of the lower mold (20) along the width direction of the lower mold (20), the first accessory positioning groove (30) being connected with the lower cavity (21) of the tail, the first accessory positioning groove (30) being located on the outer side of the upper mold (10), and a first accessory connecting hole (12) being arranged on the outer side of the upper mold (10).

3. The UAV tail wing compression molding die according to claim 2, characterized in that: The lower mold (20) is provided with a positioning hole (31), the positioning hole (31) is opened along the width direction of the lower mold (20), and the positioning hole (31) passes through the first accessory positioning groove (30).

4. The UAV tail wing compression molding die according to claim 3, characterized in that: The positioning assembly further comprises a first positioning block (40), the first positioning block (40) being arranged on the peripheral side of the tail lower cavity (21) and being in communication with the tail lower cavity (21), the first positioning block (40) being arranged along the length direction of the lower mould (20), and the bottom of the upper mould (10) being provided with a positioning upper cavity (41) matching with the top of the first positioning block (40).

5. The UAV tail wing compression molding die according to claim 4, characterized in that: The first positioning block (40) is detachably connected to the lower mold (20).

6. The UAV tail wing compression molding die according to claim 5, characterized in that: The number of the upper molds (10) and the number of the lower molds (20) are both two, the two lower molds (20) are centrally symmetrically arranged around the midpoints of their short sides, the two upper molds (10) are centrally symmetrically arranged, the upper molds (10) and the lower molds (20) are arranged one-to-one, and the two lower molds (20) and the two upper molds (10) are all integrated structures.

7. The UAV tail wing compression molding die according to claim 6, characterized in that: A wedge block (50) is arranged between the two lower molds (20), and the wedge block (50) is communicated with the lower cavity (21) of the tail; a wedge block groove (51) matching the top of the wedge block (50) is arranged between the two upper molds (10), and the wedge block groove (51) is communicated with the upper cavity (11) of the tail.

8. The UAV tail wing compression molding die according to claim 7, characterized in that: The peripheral sides of the lower mold (20) and the upper mold (10) are both provided with hanging holes and temperature measuring holes (61), and the temperature measuring holes (61) are located on the peripheral sides of the hanging holes.

9. The UAV tail wing compression molding die according to claim 8, characterized in that: A guide sleeve (62) is provided at the top corner position of the upper end surface of the lower mold (20), and the guide sleeve (62) is respectively located on the outside of the lower cavity (21) of the tail and the outside of the first positioning block (40). A guide column (63) matching the guide sleeve (62) is provided at the bottom of the upper mold (10), and the guide column (63) is located on the outside of the upper cavity (11) of the tail and the outside of the positioning upper cavity (41).

10. The UAV tail wing compression molding die according to claim 8, characterized in that: The upper end surface of the lower mold (20) is provided with a glue overflow groove (64), and the glue overflow groove (64) is located outside the lower cavity (21) of the tail and communicates with the outside.

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