Injection molding mold for aircraft propeller

Abstract

The utility model relates to an injection molding mold for a propeller of an aircraft. The injection molding mold comprises a lower mold assembly and an upper mold assembly, a lower mounting groove is formed in the top surface of the lower die assembly, and a lower die core is mounted in the lower mounting groove; the lower mold core comprises a propeller body insert and a plurality of paddle inserts; the propeller body insert is detachably mounted in the middle of the mounting groove, and the blade inserts are circumferentially and uniformly distributed and detachably mounted on the periphery of the propeller body insert; an upper mounting groove is formed in the bottom face of the upper die assembly, and an upper die core matched with the lower die core is detachably mounted in the upper mounting groove. By arranging the detachable propeller body insert and the detachable paddle insert, injection molding of aircraft propellers of different shapes and sizes can be achieved only by replacing the propeller body insert and the paddle insert; in addition, elastic plates can be arranged at the bottoms of the blade inserts, fine adjustment cushion blocks are arranged at the tops of the blade inserts, and the balance degree of the propeller can be adjusted by adjusting the heights of the fine adjustment cushion blocks at the tops of the blade inserts.

Description

Technical Field

[0001] The utility model relates to the technical field of propeller processing, in particular to an injection molding mold for an aircraft propeller. Background Art

[0002] Drones are widely used in agriculture, exploration, photography, border patrol and other fields due to their advantages of flexibility, quick response, unmanned flight and low operating requirements. Propellers are essential parts of drones. To adapt to different drones and different applications, the shapes and sizes of propellers vary, so multiple molds need to be manufactured to meet the injection molding production of different propellers.

[0003] In addition, propellers have always been a component with high requirements, especially the requirement for balance. It has always been a major technical challenge for plastic parts. Any error in structure, processing, assembly, injection molding, etc. will have a great impact on its balance. Utility Model Content

[0004] Based on the above description, the utility model proposes an injection molding mold for an aircraft propeller. By providing a detachable propeller body insert and a blade insert, the injection molding of aircraft propellers of different shapes and sizes can be achieved by only replacing the propeller body insert and the blade insert.

[0005] The utility model solves the above-mentioned technical problems with a technical solution as follows: an injection molding mold for an aircraft propeller, comprising a lower mold assembly and an upper mold assembly; a lower mounting groove is arranged on the top surface of the lower mold assembly, and a lower mold core is installed in the lower mounting groove; the lower mold core comprises a propeller body insert and a plurality of blade inserts; the propeller body insert is detachably installed in the middle of the mounting groove, and the blade inserts are evenly distributed around the circumference and detachably installed around the propeller body insert; an upper mounting groove is arranged on the bottom surface of the upper mold assembly, and an upper mold core adapted to the lower mold core is detachably installed in the upper mounting groove.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the propeller body insert is cylindrical, and the side of the blade insert close to the propeller body insert is an arc shape matching the outer side wall of the propeller body insert.

[0008] Furthermore, every two adjacent blade inserts are closely arranged; the installation groove is cylindrical, and the side of the blade insert away from the propeller body insert is an arc shape that matches the inner side wall of the installation groove.

[0009] Furthermore, a limiting block is arranged between every two adjacent blade inserts, and limiting grooves matching the limiting blocks are arranged on both sides of the blade insert.

[0010] Furthermore, positioning grooves corresponding to the limiting blocks are arranged on the bottom surface of the upper mold core, and the tops of the limiting blocks can be slidably inserted in the corresponding positioning grooves.

[0011] Furthermore, a detachable fine-tuning pad is respectively provided on the top of the blade inlay, and the top of the fine-tuning pad protrudes from the top of the blade inlay.

[0012] Furthermore, an elastic plate is provided at the bottom of the blade insert.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0014] 1. The utility model provides a detachable propeller body insert and a blade insert, and only the propeller body insert and the blade insert need to be replaced to realize the injection molding of aircraft propellers of different shapes and sizes;

[0015] 2. By setting an elastic plate at the bottom of the blade insert and a detachable fine-tuning pad on the top, the fine-tuning pads on the top of each blade insert are replaced respectively during the debugging stage before injection molding, so as to adjust the height of the fine-tuning pads on the top of each blade insert, and the mold spacing between each blade insert and the upper mold core can be fine-tuned to achieve fine-tuning of the thickness and weight of each blade and adjust the balance of the propeller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of an injection molding mold for an aircraft propeller provided in Embodiment 1 of the utility model;

[0017] Figure 2 It is a top view of the lower mold assembly in the first embodiment of the utility model;

[0018] Figure 3 It is a bottom view of the upper mold assembly in the first embodiment of the utility model;

[0019] Figure 4 It is a top view of the lower mold assembly in the second embodiment of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the blade insert in the second embodiment of the utility model;

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. Lower mold assembly; 11. Lower mounting groove; 2. Lower mold core; 21. Propeller body insert; 22. Blade insert; 221. Limiting groove; 222. Fine-tuning pad; 223. Elastic plate; 23. Limiting block; 3. Upper mold assembly; 31. Upper mounting groove; 4. Upper mold core; 41. Positioning groove. DETAILED DESCRIPTION

[0023] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0025] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0026] Embodiment 1

[0027] An injection molding die for an aircraft propeller comprises a lower die assembly 1 and an upper die assembly 3.

[0028] A lower mounting groove 11 is provided on the top surface of the lower mold assembly 1, and a lower mold core 2 is installed in the lower mounting groove 11. The lower mold core 2 includes a propeller body insert 21 and a plurality of blade inserts 22. The propeller body insert 21 is detachably installed in the middle of the mounting groove, and the blade inserts 22 are evenly distributed around the circumference and detachably installed around the propeller body insert 21.

[0029] In this embodiment, the mounting groove is cylindrical, and the propeller body insert 21 is also cylindrical. Every two adjacent blade inserts 22 are closely arranged, and the side of each blade insert 22 close to the propeller body insert 21 is an arc shape matching the outer side wall of the propeller body insert 21, and the side of each blade insert 22 away from the propeller body insert 21 is an arc shape matching the inner side wall of the mounting groove.

[0030] For propellers of different shapes and sizes, the diameters of the propeller body inserts 21 are different, and the inner diameters of the blade inserts 22 are also different. When the outer diameters of the blade inserts 22 remain unchanged, they are adapted to the inner sidewalls of the mounting grooves. In addition, for propellers of different shapes and sizes, the corresponding blade inserts 22 are respectively provided with injection molding grooves of different shapes and sizes.

[0031] An upper mounting groove 31 is provided on the bottom surface of the upper mold assembly 3 , and an upper mold core 4 adapted to the lower mold core 2 is detachably mounted in the upper mounting groove 31 .

[0032] A limiting block 23 is provided between every two adjacent blade inserts 22, and limiting grooves 221 matching the limiting blocks 23 are provided on both sides of the blade inserts 22. In addition, positioning grooves 41 corresponding to the limiting blocks 23 are provided on the bottom surface of the upper mold core 4, and the top of the limiting block 23 can be slidably inserted in the corresponding positioning groove 41. By providing the limiting blocks 23, the angle adaptation of the upper mold core 4 and the lower mold core 2 can be achieved more accurately, and the limiting function of each blade insert 22 is played.

[0033] In this embodiment, by providing a detachable propeller body insert 21 and blade insert 22, the injection molding of aircraft propellers of different shapes and sizes can be achieved only by replacing the propeller body insert 21, the blade insert 22 and the corresponding upper mold core 4.

[0034] Embodiment 2

[0035] The difference between this embodiment and the first embodiment is that a detachable fine-tuning pad 222 is respectively provided on the top of the blade insert 22, and the top of the fine-tuning pad 222 protrudes from the top of the blade insert 22. An elastic plate 223 is provided on the bottom of the blade insert 22.

[0036] During the debugging stage before injection molding, the fine-tuning pads 222 on the top of each blade insert 22 can be replaced respectively, so as to adjust the height of the fine-tuning pads 222 on the top of each blade insert 22, and the mold spacing between each blade insert 22 and the upper mold core 4 can be fine-tuned to achieve fine-tuning of the thickness and weight of each blade and adjust the balance of the propeller.

[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An injection molding mold for an aircraft propeller, characterized in that: It comprises a lower mould assembly and an upper mould assembly; a lower mounting groove is arranged on the top surface of the lower mould assembly, and a lower mould core is installed in the lower mounting groove; the lower mould core comprises a propeller body insert and a plurality of blade inserts; the propeller body insert is detachably installed in the middle of the mounting groove, and the blade inserts are evenly distributed around the circumference and detachably installed around the propeller body insert; an upper mounting groove is arranged on the bottom surface of the upper mould assembly, and an upper mould core adapted to the lower mould core is detachably installed in the upper mounting groove; detachable fine-tuning pads are respectively arranged on the top of the blade inserts, and the tops of the fine-tuning pads protrude from the tops of the blade inserts; an elastic plate is arranged on the bottom of the blade inserts.

2. The injection molding mold for an aircraft propeller according to claim 1, characterized in that: The propeller body insert is cylindrical, and the side of the blade insert close to the propeller body insert is an arc shape matching the outer side wall of the propeller body insert.

3. The injection molding mold for an aircraft propeller according to claim 1, characterized in that: Every two adjacent blade inserts are closely arranged; the installation groove is cylindrical, and the side of the blade insert away from the propeller body insert is an arc shape that matches the inner side wall of the installation groove.

4. The injection molding mold for an aircraft propeller according to claim 1, characterized in that: A limiting block is arranged between every two adjacent blade inserts, and limiting grooves matching the limiting blocks are arranged on both sides of the blade insert.

5. The injection molding mold for an aircraft propeller according to claim 4, characterized in that: Positioning grooves corresponding to the limiting blocks are arranged on the bottom surface of the upper mold core, and the tops of the limiting blocks can be slidably inserted in the corresponding positioning grooves.

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