A positioning device for a carbon tube mold of a drone wing

Abstract

The utility model discloses a kind of unmanned aerial vehicle wing carbon pipe mould positioning device, it is related to unmanned aerial vehicle wing injection mold field.The utility model includes lower mould and upper mould, the lower mould and upper mould mirror image symmetry, the lower mould includes mould frame, the inside of mould frame is equipped with mould groove, the inside of mould groove is inlaid and is equipped with lower mould body, the inner wall of mould groove is equipped with four groups of installation groove, the utility model is simplified maintenance process by the combination structure of modular mould frame and detachable body, when abutting block is embedded installation groove and is wedged into abutting groove, inclined plane mechanics structure will bolt's axial locking force be converted into radial constraint force to body, eliminate fit gap, improve anti-vibration stability, simultaneously, the setting of predetermined positioning and extension of carbon pipe in limiting groove into injection slot makes molten material directly cover carbon pipe forming, avoid secondary processing and strengthen structure integrity.

Description

Technical Field

[0001] This utility model relates to the field of injection molds for drone wings, specifically a positioning device for a carbon tube mold for drone wings. Background Technology

[0002] UAV wing injection molds are high-tech products that integrate precision machining, materials science and thermodynamic optimization. Their core lies in high-precision airfoil surface forming, complex core-pulling mechanism design and dynamic temperature control system. The molds must be made of wear-resistant steel to resist the wear of glass fiber / carbon fiber reinforced materials, and conformal cooling channels and multi-stage venting grooves are used to ensure that thin-walled parts are defect-free.

[0003] Currently, during the injection molding production of drone wings, the molds installed inside the injection molding machine require frequent replacement and maintenance. In the actual installation process, there is a problem: the molds are usually installed using bolts, which has obvious limitations on the tightness of the mold installation. In view of this, the inventors urgently need to design a more effective positioning mechanism for the mold, thereby improving the installation firmness and stability of the mold. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a positioning device for a carbon tube mold of a drone wing, so as to solve the technical problem of insufficient installation stability of the injection mold for a drone wing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a positioning device for a carbon tube mold of a UAV wing, comprising a lower mold and an upper mold, the lower mold and the upper mold being mirror-symmetrical, the lower mold comprising a mold frame, a mold groove being formed on the inner side of the mold frame, a lower mold body being embedded in the inner side of the mold groove, four sets of mounting grooves being formed on the inner wall of the mold groove, an abutment groove being formed on the outer periphery of the lower mold body at a position opposite to the mounting groove, an abutment block being embedded in the interior of the mounting groove, the abutment block abutting against the lower mold body.

[0006] By adopting the above technical solution, the device achieves modular installation of the core components of the mold through the combination of a split mold frame and a lower mold body. When the mold body is embedded in the mold groove, the correspondence between the mounting groove and the abutment groove provides a physical space basis for the locking mechanism.

[0007] Furthermore, the abutting block abuts against the abutting groove and has an inclined abutting structure, and the abutting block has a wedge-shaped structure.

[0008] By adopting the above technical solution, the wedge-shaped abutment block and the inclined abutment groove form a progressive locking mechanism. During the bolt tightening process, the inclined structure converts the axial locking force into a radial extrusion component, forcing the lower mold body to converge toward the center of the mold frame and eliminating the assembly gap.

[0009] Furthermore, the abutment block is fastened to the mold frame by bolts, and the abutment block is adapted to the mounting groove.

[0010] By adopting the above technical solution, the bolt fastening method makes the locking force of the abutment block controllable and adjustable, which facilitates dynamic optimization of the preload force according to the injection pressure of different materials. At the same time, the compatibility setting between the abutment block and the mounting groove restricts the displacement freedom of the abutment block on the one hand, and disperses local stress through the precisely matched contour surface on the other hand.

[0011] Furthermore, both the lower mold body and the upper mold body have injection grooves on their surfaces.

[0012] By adopting the above technical solution, the symmetrically opened injection grooves on the upper and lower mold bodies ensure the dimensional consistency of the UAV wing cavity, making the molten material fill more evenly under symmetrical pressure on both sides. At the same time, the split groove structure makes it easy to retain the standard cavity on the other side when maintaining or replacing one side, without having to scrap the entire mold.

[0013] Furthermore, the surfaces of the lower mold and the upper mold are provided with limiting grooves, and carbon tubes are embedded inside the limiting grooves, with the carbon tubes extending into the injection molding tank.

[0014] By adopting the above technical solution, the limiting groove forms a mechanical pre-position by wrapping the carbon tube around its circumference, eliminating the positional deviation when the carbon tube is placed manually. At the same time, the carbon tube extends into the injection molding tank.

[0015] Furthermore, the lower mold and the upper mold are respectively provided with a number of positioning holes and positioning pins on opposite sides of their surfaces.

[0016] By adopting the above technical solution, the coarse positioning combination of the positioning pin and the positioning hole can achieve millimeter-level alignment accuracy in the early stage of mold closing, greatly reducing the precision adjustment time. At the same time, the mechanical interlocking structure, as the first layer of protection, can resist the instantaneous misalignment caused by the impact force of the injection molding machine when it closes the mold.

[0017] Furthermore, several positioning blocks and positioning grooves are provided on the opposite surfaces of the lower mold body and the upper mold body.

[0018] By adopting the above technical solution, the precise interlocking of the positioning block and the positioning groove constitutes a second positioning system, which achieves micron-level correction on the basis of coarse positioning. At the same time, its direct placement on the forming surface of the mold body can offset the cavity offset caused by the assembly tolerance of the mold frame.

[0019] In summary, the present invention has the following main advantages:

[0020] 1. This utility model simplifies the maintenance process through the combination structure of modular mold frame and detachable body. When the abutment block is embedded in the installation groove and wedged into the abutment groove, the inclined mechanical structure converts the axial locking force of the bolt into the radial constraint force on the body, eliminates the fit gap, and improves the vibration resistance stability. At the same time, the pre-positioning of the carbon tube in the limiting groove and the setting of extending into the injection groove allow the molten material to directly cover the carbon tube for molding, avoiding secondary processing and strengthening the overall structure.

[0021] 2. This utility model forms a dual error compensation system by coarse positioning of the positioning pin and positioning hole and precise engagement of the positioning block and positioning groove, ensuring that the cavity is completely aligned when the mold is closed. At the same time, the split injection tank allows for individual repair or replacement of damaged parts, avoiding the scrapping of the entire mold and significantly reducing long-term production costs. The coordinated operation of each structure ultimately achieves one-time molding and efficient maintenance of high-precision wings. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is an exploded structural diagram of the lower mold of this utility model;

[0024] Figure 3 This is a bottom view of the upper mold structure of this utility model;

[0025] Figure 4 This is a cross-sectional structural diagram of the lower mold of this utility model.

[0026] In the diagram: 1. Lower mold; 101. Mold frame; 102. Mold groove; 103. Lower mold body; 104. Injection groove; 105. Mounting groove; 106. Abutment groove; 107. Abutment block; 2. Upper mold; 3. Limiting groove; 4. Carbon tube; 501. Positioning hole; 502. Positioning pin. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In this embodiment:

[0029] A positioning device for carbon tube molds for UAV wings, such as Figure 1-4As shown, the device includes a lower mold 1 and an upper mold 2, which are mirror-symmetrical. The lower mold 1 includes a mold frame 101, with a mold groove 102 formed on the inner side of the mold frame 101. A lower mold body 103 is embedded in the inner side of the mold groove 102. Four sets of mounting grooves 105 are formed on the inner wall of the mold groove 102. An abutment groove 106 is formed on the outer periphery of the lower mold body 103 at a position opposite to the mounting groove 105. An abutment block 107 is embedded in the interior of the mounting groove 105 and abuts against the lower mold body 103. This device uses a split mold frame 101. The combination with the lower mold body 103 enables modular installation of the core components of the mold. When the mold body 103 is embedded in the mold groove 102, the correspondence between the mounting groove 105 and the abutment groove 106 provides a physical space basis for the locking mechanism. At the same time, the abutment block 107 embedded in the mounting groove 105 generates multi-directional constraint force during pressing, which significantly improves the fitting stability between the body 103 and the mold frame 101 and avoids displacement deviation caused by high-frequency vibration during injection molding. Compared with traditional integral molds, this structure allows for quick replacement or maintenance of key molding components without the need for complete disassembly of the mold frame.

[0030] See Figure 2 , Figure 4 The abutting block 107 abuts against the abutting groove 106 and has an inclined abutting structure. The abutting block 107 has a wedge-shaped structure. The cooperation between the wedge-shaped abutting block 107 and the inclined abutting groove 106 forms a progressive locking mechanism. During the bolt tightening process, the inclined structure converts the axial locking force into a radial extrusion component, forcing the lower mold body 103 to converge towards the center of the mold frame 101, eliminating the assembly gap. At the same time, the self-locking characteristic of the wedge structure can prevent the attenuation of the locking force under the high pressure of injection molding, ensuring the positioning reliability during long-term production. Compared with planar contact, it is more adaptable to thermal expansion deformation and avoids mold cracking caused by stress concentration due to temperature difference.

[0031] See Figure 2 , Figure 3 , Figure 4 The abutment block 107 is fastened to the mold frame 101 by bolts. The abutment block 107 is adapted to the mounting groove 105. The bolt fastening method makes the locking force of the abutment block 107 controllable and adjustable, which facilitates dynamic optimization of the preload force according to the injection pressure of different materials. At the same time, the adaptability of the abutment block 107 and the mounting groove 105 restricts the displacement freedom of the abutment block 107 on the one hand, and disperses local stress through the precisely matched contour surface on the other hand, preventing plastic deformation of the mold frame 101 caused by point load. This structure can effectively maintain the matching accuracy and repeatability of the locking element under frequent disassembly and assembly conditions.

[0032] See Figure 1 , Figure 2 , Figure 3Both the lower mold body 103 and the upper mold body have injection grooves 104 on their surfaces. The symmetrical injection grooves 104 on the upper and lower mold bodies ensure the dimensional consistency of the UAV wing cavity, making the molten material fill more evenly under symmetrical pressure on both sides. At the same time, the split groove structure makes it easy to retain the standard cavity on the other side when maintaining or replacing one side, without scrapping the entire mold. The separate setting of the injection grooves 104 also avoids the risk of mold failure caused by local wear of traditional integral cavities, significantly extending the overall life of the mold.

[0033] See Figure 1 , Figure 2 , Figure 3 The surfaces of the lower mold 1 and the upper mold 2 are provided with limiting grooves 3, and carbon tubes 4 are embedded inside the limiting grooves 3. The carbon tubes 4 extend into the injection molding tank 104. The limiting grooves 3 form a mechanical pre-positioning around the carbon tubes 4, eliminating the positional deviation when the carbon tubes are manually placed. At the same time, the setting of the carbon tubes 4 extending into the injection molding tank 104 allows the molten material to directly cover its outer wall for molding, avoiding the strength loss caused by secondary bonding. This structure ensures that the carbon tubes and the wing matrix form a molecular-level bond, maximizing the load transfer efficiency and fundamentally improving the wing's bending and torsional resistance.

[0034] See Figure 1 , Figure 2 , Figure 3 The lower mold 1 and the upper mold 2 are respectively provided with a number of positioning holes 501 and positioning pins 502 at their opposite positions. The coarse positioning combination of positioning pins 502 and positioning holes 501 can achieve millimeter-level alignment accuracy in the early stage of mold closing, greatly reducing the precision adjustment time. At the same time, this mechanical interlocking structure serves as the first layer of protection, which can resist the instantaneous misalignment caused by the impact force of the injection molding machine when the mold is closed. Compared with a single guide post system, the combination of multiple sets of pin holes can distribute the guiding load and avoid the cumulative error caused by single-point wear during long-term use.

[0035] See Figure 1 , Figure 2 , Figure 3 Several positioning blocks and positioning grooves are provided on the surfaces of the lower mold body 103 and the upper mold body respectively. The precise interlocking of the positioning blocks and positioning grooves constitutes a second positioning system, which achieves micron-level correction on the basis of coarse positioning. At the same time, the way in which they are directly set on the forming surface of the mold body can offset the cavity offset caused by the assembly tolerance of the mold frame 101. The synergistic effect of the dual positioning system completely solves the problem of cumulative accuracy loss of multi-module assembled molds, and provides the ultimate guarantee for the aerodynamic curvature of the UAV wing.

[0036] The implementation principle of this embodiment is as follows: First, the lower mold body 103 is embedded in the mold groove 102 opened inside the mold frame 101 of the lower mold 1. At this time, the abutment groove 106 on the outer wall of the lower mold body 103 is automatically aligned with the mounting groove 105 on the side wall of the mold frame 101. Then, the wedge-shaped abutment block 107 is inserted into the mounting groove 105. The inclined surface of the abutment block 107 generates radial pressure on the abutment groove 106 by bolt tightening, which forces the lower mold body 103 to fit tightly with the mold frame 101, thus completing the modular locking.

[0037] Simultaneously, the upper mold 2 performs the same operation in a mirror-symmetrical manner. When the mold is closed, the positioning pin 502 is inserted into the positioning hole 501 to achieve initial alignment. At the same time, the positioning blocks and positioning grooves on the surfaces of the upper mold body and the lower mold body 103 further engage precisely to form a double positioning. Finally, the carbon tube 4 is embedded in the limiting groove 3 on the surfaces of the lower mold 1 and the upper mold 2, so that the carbon tube 4 extends into the injection molding tank 104. After the molten material is injected into the injection molding tank 104, it covers the carbon tube 4 to form an integrated wing structure.

[0038] During disassembly and maintenance, the mold body 103 and the mold frame 101 can be separated simply by loosening the bolts of the abutment block 107, which greatly improves the efficiency of disassembly and assembly. The entire process ensures the rigidity of the mold and the accuracy of mold closing through wedge locking and dual positioning system.

[0039] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A positioning device for a carbon fiber tube mold for a drone wing, characterized in that: The mold includes a lower mold (1) and an upper mold (2), which are mirror-symmetrical. The lower mold (1) includes a mold frame (101), and a mold groove (102) is provided on the inner side of the mold frame (101). A lower mold body (103) is embedded in the inner side of the mold groove (102). Four sets of mounting grooves (105) are provided on the inner wall of the mold groove (102). An abutment groove (106) is provided on the outer periphery of the lower mold body (103) and opposite to the mounting groove (105). An abutment block (107) is embedded in the interior of the mounting groove (105) and abuts against the lower mold body (103).

2. The UAV wing carbon tube mold positioning device according to claim 1, characterized in that: The abutting block (107) abuts against the abutting groove (106) and has an inclined abutting structure. The abutting block (107) has a wedge-shaped structure.

3. The UAV wing carbon tube mold positioning device according to claim 1, characterized in that: The abutment block (107) is fastened to the mold frame (101) by bolts, and the abutment block (107) is adapted to the mounting groove (105).

4. The UAV wing carbon tube mold positioning device according to claim 1, characterized in that: Both the lower mold body (103) and the upper mold body have injection grooves (104) on their surfaces.

5. The UAV wing carbon tube mold positioning device according to claim 1, characterized in that: The surfaces of the lower mold (1) and the upper mold (2) are provided with limiting grooves (3), and carbon tubes (4) are embedded in the limiting grooves (3), with the carbon tubes (4) extending into the injection tank (104).

6. The UAV wing carbon tube mold positioning device according to claim 1, characterized in that: The lower mold (1) and the upper mold (2) are respectively provided with a number of positioning holes (501) and positioning pins (502) at opposite positions on their surfaces.

7. The UAV wing carbon tube mold positioning device according to claim 1, characterized in that: Several positioning blocks and positioning grooves are provided on the opposite surfaces of the lower mold body (103) and the upper mold body.

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