An injection mold assembly for producing drone wings

Abstract

The present invention relates to the field of injection molding technology, and discloses an injection mold assembly for producing unmanned aerial vehicle wings, comprising a horizontally arranged guide column, on which a movable mold, a fixed mold component and a fixed seat are arranged, the fixed mold component comprises a mounting bracket which is slidably connected to the guide column, the movable mold and the fixed seat are respectively located on both sides of the mounting bracket, the guide column is provided with a first spring which is located between the mounting bracket and the fixed seat, a rotating bracket is rotatably installed on the mounting bracket, and a rotating shaft formed at the rotating installation position is dynamically connected to a motor arranged on the mounting bracket, the mounting bracket is provided with a cooling component located above the rotating bracket and a heating component located below the rotating bracket, the outer surface of the rotating bracket is provided with a fixed mold component, and four fixed mold components are arranged in an array along the circumferential direction of the rotating shaft.

Description

Technical Field

[0001] The invention relates to the field of injection molding, and in particular to an injection mold assembly for producing unmanned aerial vehicle wings. Background Art

[0002] Injection molding is generally used in the production of drone wings and blades. For larger industrial drone wings and blades such as agricultural drones, it is necessary to reduce the weight of the drone body while maintaining the excellent performance of the body material. At this time, conventional materials can no longer meet the requirements, and carbon fiber special nylon composites are gradually entering the market. Among them, high-temperature nylon is commonly used in drone blades. PA6T (poly(adipamide terephthalate)) has the advantages of high mechanical strength, strong rigidity, low water absorption, fast crystallization speed, and high heat deformation temperature. However, due to the melting point of high-temperature nylon reaching more than 320 degrees, the crystallization molding speed is too fast, and the processing difficulty of manufacturing large blades is relatively high. Specifically: due to the fast solidification molding speed, it is easy to cause local solidification molding during the injection process, resulting in processing failure. The quality of the blades is affected; during the process of waiting for cooling, molding and demolding after the injection is completed, the residual molten plastic at the injection nozzle is prone to solidification and affect the next injection; the wing is relatively thin, and the temperature of the wing after molding is high. Therefore, the wing is soft and easily deformed by force. In order to avoid damage to the wing during demolding, it is generally necessary to wait for the wing to be completely cooled and the temperature to be low before demolding, which will undoubtedly reduce the injection molding production efficiency; the molding cooling process of the injection molding machine is generally achieved through cooling channels set around the mold. Therefore, after demolding, the temperature of these cooling channels is relatively low. After the next injection molding, it will actively absorb the heat of the molten plastic in the mold cavity, which is easier to speed up the solidification molding speed and is more likely to cause local solidification molding during the injection process.

[0003] Based on the above, the present invention proposes an injection mold assembly for producing drone wings. Summary of the invention

[0004] In order to solve the problems mentioned in the above background, the present invention provides an injection mold assembly for producing drone wings.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows.

[0006] An injection mold assembly for producing a drone wing comprises a horizontally arranged guide column, on which a movable mold, a fixed mold component and a fixing seat are arranged; The fixed mold component includes a mounting bracket which is slidably connected to the guide column, the movable mold and the fixed seat are respectively located on both sides of the mounting bracket, the guide column is provided with a first spring located between the mounting bracket and the fixed seat, a rotating bracket is rotatably mounted on the mounting bracket, and a rotating shaft formed at the rotating mounting position is dynamically connected to a motor arranged on the mounting bracket, the mounting bracket is provided with a cooling component located above the rotating bracket and a heating component located below the rotating bracket, the outer surface of the rotating bracket is provided with a fixed mold component, and four fixed mold components are arranged in an array along the circumferential direction of the rotating shaft.

[0007] As a further improvement and optimization of the present invention, the fixed mold assembly includes a fixed mold base fixedly arranged on the rotating bracket, the end surface of the fixed mold base is provided with a fixed mold, and a fixed mold cavity is provided on the side of the fixed mold away from the rotating shaft.

[0008] As a further improvement and optimization of the present invention, an installation groove is provided on one side where the fixed mold is connected to the fixed mold seat, and a cooling groove is provided at the bottom of the installation groove. The cooling groove is in the shape of an annular groove and the axis line of the cooling groove coincides with the center line of the fixed mold. A plurality of cooling grooves are provided along their own radial array, and communication is achieved between two adjacent cooling grooves through a connecting hole. A water hole is provided through the groove wall of the outermost cooling groove, and two water holes are provided, which are a water inlet hole and a water outlet hole respectively.

[0009] As a further improvement and optimization of the present invention, a sealing disk is fixedly arranged at the bottom of the mounting groove, and the sealing disk is used to seal the groove opening of the cooling groove. A demolding disk is sleeved in the mounting groove, and a second spring is arranged between the demolding disk and the sealing disk. A demolding rod is arranged on the end face of the demolding disk, and the end of the demolding rod can extend into the fixed mold cavity of the fixed mold. Avoidance holes for avoiding the demolding rod are arranged on the sealing disk and the fixed mold. Initially, the end of the demolding rod can seal the opening of the avoidance hole arranged on the fixed mold.

[0010] As a further improvement and optimization of the present invention, a demoulding hole communicating with the mounting groove is provided on the fixed mold base.

[0011] As a further improvement and optimization of the present invention, an air distribution pipe is respectively provided at the opening of the demoulding holes of the four fixed mold assemblies, an air main pipe is provided between the four air distribution pipes, the air main pipe is coaxial with the rotating shaft, an air pump is provided on the air main pipe through a rotating joint, and an electromagnetic valve is respectively provided on the four air distribution pipes.

[0012] As a further improvement and optimization of the present invention, the heating assembly includes a heating seat arranged on a mounting bracket in a vertical direction and a first cylinder for driving the heating seat to move. The heating seat is made of a heat-conducting material and a heating element is arranged in the heating seat.

[0013] As a further improvement and optimization of the present invention, a heating protrusion is provided on the upper surface of the heating seat, and the heating protrusion can extend into the fixed mold cavity of the fixed mold and the outer surface of the heating protrusion is in contact with the cavity wall of the fixed mold cavity.

[0014] As a further improvement and optimization of the present invention, the cooling assembly includes a cooling seat arranged on the mounting bracket in the vertical direction and a second cylinder for driving the cooling seat to move. The cooling seat is made of heat-conducting material and its shape is consistent with that of the movable mold.

[0015] As a further improvement and optimization of the present invention, initially, the positions of the four fixed mold assemblies are the heating position, injection position, cooling position and demolding position along the array direction, the fixed mold of the fixed mold assembly at the heating position is located parallel to the top of the heating seat, the fixed mold of the fixed mold assembly at the injection position is parallel to the movable mold and both are located on the same side of the rotating bracket, the fixed mold of the fixed mold assembly at the cooling position is located parallel to the bottom of the cooling seat, and the fixed mold assembly at the demolding position and the limiting boss are located on the same side of the rotating bracket.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In this solution, the cooperation of the movable mold, the heating component, the cooling component, the limiting convex column and the four fixed mold components can realize continuous injection molding. During the injection molding process, the fixed mold cavity of the fixed mold is heated at the heating position to make it in a high temperature state, and then the molten plastic is injected at the injection position. After the initial molding, the fixed mold is transferred to the cooling position for cooling. After cooling, the fixed mold is transferred to the demolding position for demolding. The advantages are: 1. During the injection process, since the fixed mold cavity of the fixed mold is in a high temperature state, the plastic that is left in the injection nozzle and is easily semi-solidified in the last injection will be injected into the fixed mold cavity at the first time and contact the cavity wall of the fixed mold cavity. The high temperature state of the fixed mold cavity will make this part of the plastic return to a molten state, solving the problem that the plastic in the injection nozzle is easy to solidify and affect the next injection molding. At the same time, the high temperature state of the fixed mold cavity can also play a role in heat preservation, preventing the molten plastic from partially solidifying before the injection is completed; 2. During cooling and molding, in the prior art, it is generally necessary to wait until the drone wing is completely cooled and molded before demolding. In this solution, the next injection can be performed after the initial molding, and the wing after the initial molding is cooled at the cooling position. On the one hand, the efficiency of injection molding is improved, and the interval time between two adjacent injection actions at the injection position is shortened, which is beneficial to reduce the solidification of the plastic at the injection nozzle. On the other hand, the cooling seat is made of heat-conducting material, so the cooling and cooling effects of various parts of the wing can be kept consistent as much as possible to achieve a balanced cooling effect. In the prior art, considering the strength of the movable mold and the fixed mold, it cannot be made of a material with a better thermal conductivity, such as copper. In addition, during cooling, the cooling medium generally only flows in the fixed mold. Therefore, the heat dissipation of the part of the drone wing located in the fixed mold is faster, and the heat dissipation of the part located in the movable mold is slower, and balanced heat dissipation cannot be achieved; 3. When demolding, the water in the cooling tank can be pumped out at the same time to prevent water from remaining in the cooling tank and affecting the heating and injection steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The structure of the present invention is schematically shown Figure 1 ; Figure 2 The structure of the present invention is schematically shown Figure 2 ; Figure 3 It is a structural schematic diagram of the fixed mold component; Figure 4 It is a schematic diagram of the structure of the heating component; Figure 5 is a schematic diagram of the structure of the cooling component; Figure 6 It is a schematic diagram of a rotating bracket and four fixed mold components; Figure 7 It is a structural schematic diagram of the fixed mold assembly; Figure 8 Cross-section view of the fixed mold assembly Figure 1 ; Fig. 9 Cross-section view of the fixed mold assembly Figure 2 ; Fig.10 Schematic diagram of the cooling tank.

[0018] The reference numerals in the accompanying drawings are: 100, guide column; 101, first spring; 102, limiting boss; 200, movable mold; 300, fixed mold component; 301, mounting bracket; 302, cooling assembly; 3021, cooling seat; 3022, second cylinder; 303, heating assembly; 3031, heating seat; 3032, first cylinder; 3033, heating element; 3034, heating protrusion; 304, motor; 305, rotating bracket; 306, fixed mold assembly; 307, fixed mold seat; 3071, demoulding hole; 308, fixed mold; 3081, cooling groove; 3082, water hole; 3083, connecting hole; 309, demoulding plate; 310, second spring; 311, sealing plate; 312, demoulding rod. DETAILED DESCRIPTION

[0019] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0020] Reference Figure 1-Figure 10An injection mold assembly for producing drone wings includes a horizontally arranged guide column 100, on which a movable mold 200, a fixed mold component 300 and a fixed seat are arranged, wherein the movable mold 200 can move on the guide column 100, thereby cooperating with the fixed mold component 300 to perform mold closing or demolding actions, and an injection nozzle is arranged on the movable mold 200. The movable mold 200 can be realized by existing technology and will not be described in detail.

[0021] Reference Figure 3 The fixed mold component 300 includes a mounting bracket 301 that is slidably connected to the guide column 100, the movable mold 200 and the fixed seat are respectively located on both sides of the mounting bracket 301, and the guide column 100 is provided with a first spring 101 located between the mounting bracket 301 and the fixed seat.

[0022] A rotating bracket 305 is rotatably mounted on the mounting bracket 301 , and a rotating shaft formed at the rotating mounting position is dynamically connected to a motor 304 . The rotating bracket 305 can be driven to rotate by the motor 304 . The motor 304 is disposed on the mounting bracket 301 .

[0023] The mounting bracket 301 is provided with a cooling assembly 302 located above the rotating bracket 305 and a heating assembly 303 located below the rotating bracket 305 .

[0024] The outer surface of the rotating bracket 305 is provided with a fixed mold assembly 306 , and four fixed mold assemblies 306 are arranged in an array along the circumferential direction of the rotating shaft.

[0025] Reference Figure 6-Figure 10 The fixed mold assembly 306 includes a fixed mold base 307 fixedly disposed on the rotating bracket 305 , and a fixed mold 308 is disposed on the end surface of the fixed mold base 307 .

[0026] A fixed mold cavity is provided on the side of the fixed mold 308 away from the rotating shaft.

[0027] A mounting groove is provided on one side where the fixed mold 308 is connected to the fixed mold seat 307, and a cooling groove 3081 is provided at the bottom of the mounting groove. The cooling groove 3081 is in the shape of an annular groove and the axis line of the cooling groove 3081 coincides with the center line of the fixed mold 308. A plurality of cooling grooves 3081 are provided along their own radial array, and two adjacent cooling grooves 3081 are connected through a connecting hole 3083. A water hole 3082 is provided through the groove wall of the outermost cooling groove 3081. There are two water holes 3082, which are a water inlet hole and a water outlet hole respectively. Through existing technology, such as water pump technology, water can enter the cooling groove 3081 through the water inlet hole and be discharged from the water outlet hole. The fixed mold 308 can be cooled and cooled by flowing water, that is, the injection-molded UAV wing can be cooled and cooled.

[0028] A sealing plate 311 is fixedly provided at the bottom of the mounting groove for sealing the slot of the cooling groove 3081; a demoulding plate 309 is sleeved in the mounting groove; a second spring 310 is provided between the demoulding plate 309 and the sealing plate 311; a demoulding rod 312 is provided on the end face of the demoulding plate 309; the end of the demoulding rod 312 can extend into the fixed mold cavity of the fixed mold 308; avoidance holes for avoiding the demoulding rod 312 are provided on the sealing plate 311 and the fixed mold 308; initially, the end of the demoulding rod 312 is located in the avoidance hole provided on the fixed mold 308 and seals the opening of the avoidance hole, so that the shape of the fixed mold cavity of the fixed mold 308 is not affected.

[0029] The fixed mold base 307 is provided with a demolding hole 3071 connected to the mounting groove. Hydraulic oil medium or gas medium, etc., can be injected into the mounting groove through the demolding hole 3071, dragging the demolding plate 309 to move, so that the molded UAV wing can be pushed out through the demolding rod 312 to achieve the demolding purpose.

[0030] It should be noted that since the four fixed mold components 306 need to rotate with the rotating bracket 305, both the water pipeline used to connect the water hole 3082 and the water pump technology, and the air pipeline used to connect the demoulding hole 3071 and the hydraulic cylinder or the air pump, need to use the rotating joint technology. For example, an air distribution pipe is provided at the orifice of each of the four demoulding holes 3071, and an air main pipe is provided between the four air distribution pipes. The air main pipe is coaxial with the rotating shaft, and the air main pipe is connected to the air pump through a rotating joint. A solenoid valve is provided on each of the four air distribution pipes. When any fixed mold component 306 needs to be demoulded, the solenoid valve on the corresponding air distribution pipe is opened, and the air pump is started to inject air into the corresponding fixed mold component 306 to achieve demoulding.

[0031] Reference Figure 4 The heating assembly 303 includes a heating seat 3031 arranged on the mounting bracket 301 along the vertical direction and a first cylinder 3032 for driving the heating seat 3031 to move. The heating seat 3031 is made of heat-conducting material. A heating element 3033 is arranged in the heating seat 3031. The heating element 3033 can adopt the existing electric heating technology and will not be described in detail. A heating protrusion 3034 is arranged on the upper surface of the heating seat 3031. The heating protrusion 3034 can extend into the fixed mold cavity of the fixed mold 308 and the outer surface of the heating protrusion 3034 is in contact with the cavity wall of the fixed mold cavity.

[0032] Reference Figure 5 The cooling assembly 302 includes a cooling seat 3021 vertically arranged on the mounting bracket 301 and a second cylinder 3022 for driving the cooling seat 3021 to move. The cooling seat 3021 is made of a heat-conducting material and has a shape consistent with that of the movable mold 200.

[0033] Reference Figure 1-Figure 3 Initially, the positions of the four fixed mold assemblies 306 along the array direction are heating position, injection position, cooling position and demolding position. The fixed mold 308 of the fixed mold assembly 306 at the heating position is located parallel to the top of the heating seat 3031. The fixed mold 308 of the fixed mold assembly 306 at the injection position is parallel to the movable mold 200 and both are located on the same side of the rotating bracket 305. The fixed mold 308 of the fixed mold assembly 306 at the cooling position is located parallel to the bottom of the cooling seat 3021. The fixed mold assembly 306 at the demolding position and the limiting boss 102 are located on the same side of the rotating bracket 305.

[0034] Working principle of the present invention: In this solution, the cooperation of the movable mold 200, the heating assembly 303, the cooling assembly 302, the limiting protrusion 102 and the four fixed mold assemblies 306 can realize continuous injection molding. Here, only the use process of one fixed mold assembly 306 is described: First, at the heating position, the first cylinder 3032 drives the heating seat 3031 to move upward, so that the heating protrusion 3034 extends into the fixed mold cavity of the fixed mold 308. At the same time, the heating element 3033 is started to heat the fixed mold cavity to keep it in a high temperature state; Then, the rotating bracket 305 rotates, bringing the fixed mold assembly 306 to the injection position, and the movable mold 200 performs a mold closing action close to the fixed mold assembly 306. In this process, after the movable mold 200 contacts the fixed mold 308, the movable mold 200 continues to move, pushing the fixed mold member 300 to move as a whole, and the first spring 101 is compressed until the fixed mold assembly 306 at the demoulding position contacts the limiting protrusion 102; Then, as in the prior art, molten plastic is injected into the mold cavity composed of the movable mold 200 and the fixed mold 308 through the injection nozzle. During the injection process, since the fixed mold cavity of the fixed mold 308 is in a high temperature state, the plastic that is left in the injection nozzle in the previous injection and is easily semi-solidified will be injected into the fixed mold cavity at the first time and contact the cavity wall of the fixed mold cavity. The high temperature state of the fixed mold cavity will make this part of the plastic return to a molten state, thereby solving the problem that the plastic in the injection nozzle is easy to solidify and affect the next injection molding; After the preset time, the injection is completed, and then wait for the preset time to complete the initial molding. It should be noted that the temperature of the drone wing obtained by the initial molding is relatively high, and the wing is thin and soft at high temperature. Therefore, it is necessary to continue cooling to avoid slight deformation and damage to the wing during demolding, which will cause the wing to be unqualified; Therefore, in this solution, after the initial molding is completed, the movable mold 200 retreats and leaves the fixed mold 308, the rotating bracket 305 rotates, and brings the fixed mold assembly 306 to the cooling position, and the second cylinder 3022 drives the cooling seat 3021 to move down. The shape of the cooling seat 3021 is consistent with the shape of the movable mold 200. Therefore, the wing after the initial molding is still in the same environment as the mold cavity, and then water enters the cooling groove 3081 of the fixed mold assembly 306 to cool the initially formed UAV wing. The advantage is that in the prior art, it is necessary to wait until the UAV wing is completely cooled and molded before demolding, while in this solution, the next injection can be carried out after the initial molding, and the initial molding The wing is cooled at the cooling position. On the one hand, the efficiency of injection molding is improved, and the interval time between two adjacent injection actions at the injection position is shortened, which is beneficial to reduce the solidification of the plastic at the injection nozzle. On the other hand, the cooling seat 3021 is made of heat-conducting material, so the cooling and cooling effects of various parts of the wing can be kept consistent as much as possible to achieve a balanced cooling effect. In the prior art, considering the strength of the movable mold and the fixed mold, it cannot be made of a material with a better thermal conductivity, such as copper. In addition, during cooling, the cooling medium generally only flows in the fixed mold. Therefore, the heat dissipation of the part of the drone wing located in the fixed mold is faster, and the heat dissipation of the part located in the movable mold is slower, and balanced heat dissipation cannot be achieved. After the preset time, cooling is completed, and the second cylinder 3022 drives the cooling seat 3021 to move upward. Then, the rotating bracket 305 rotates, bringing the fixed mold assembly 306 to the demolding position, and the air pump injects gas into the installation groove, thereby ejecting the drone from the fixed mold 308 through the demolding rod 312, completing the demolding. At the same time of demolding, water is pumped out of the cooling groove 3081 to avoid affecting the heating and injection molding process during the next injection.

[0035] It should be noted that the depth of the movable mold cavity in the movable mold is relatively shallow. Therefore, after the movable mold leaves the fixed mold, the initially formed UAV wing remains in the fixed mold.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An injection mold assembly for producing drone wings, comprising a horizontally arranged guide post (100), characterized in that: A movable mold (200), a fixed mold component (300) and a fixing seat are arranged on the guide column (100); The fixed mold component (300) comprises a mounting bracket (301) which is slidably connected to the guide column (100); the movable mold (200) and the fixed seat are respectively located on both sides of the mounting bracket (301); a first spring (101) located between the mounting bracket (301) and the fixed seat is arranged on the guide column (100); a rotating bracket (305) is rotatably mounted on the mounting bracket (301); a rotating shaft formed at the rotating mounting position is power-connected to a motor (304) arranged on the mounting bracket (301); a cooling component (302) located above the rotating bracket (305) and a heating component (303) located below the rotating bracket (305) are arranged on the mounting bracket (301); a fixed mold component (306) is arranged on the outer surface of the rotating bracket (305); four fixed mold components (306) are arranged in an array along the circumferential direction of the rotating shaft.

2. The injection mold assembly for producing drone wings according to claim 1, characterized in that: The fixed mold assembly (306) comprises a fixed mold base (307) fixedly arranged on the rotating bracket (305); a fixed mold (308) is arranged on the end surface of the fixed mold base (307); and a fixed mold cavity is arranged on the side of the fixed mold (308) away from the rotating shaft.

3. The injection mold assembly for producing drone wings according to claim 2, characterized in that: A mounting groove is provided on one side where the fixed mold (308) is connected to the fixed mold seat (307), and a cooling groove (3081) is provided at the bottom of the mounting groove. The cooling groove (3081) is in the shape of an annular groove, and the axis of the cooling groove (3081) coincides with the center line of the fixed mold (308). A plurality of cooling grooves (3081) are arranged in an array along their own radial direction, and two adjacent cooling grooves (3081) are connected via a connecting hole (3083). A water hole (3082) is provided through the groove wall of the outermost cooling groove (3081), and two water holes (3082) are provided, which are a water inlet hole and a water outlet hole, respectively.

4. The injection mold assembly for producing drone wings according to claim 3, characterized in that: A sealing disk (311) is fixedly arranged at the bottom of the mounting groove, and the sealing disk (311) is used to seal the slot of the cooling groove (3081). A demoulding disk (309) is sleeved in the mounting groove, and a second spring (310) is arranged between the demoulding disk (309) and the sealing disk (311). A demoulding rod (312) is arranged on the end surface of the demoulding disk (309), and the end of the demoulding rod (312) can extend into the fixed mold cavity of the fixed mold (308). The sealing disk (311) and the fixed mold (308) are both provided with avoidance holes for avoiding the demoulding rod (312). Initially, the end of the demoulding rod (312) can seal the opening of the avoidance hole arranged on the fixed mold (308).

5. The injection mold assembly for producing drone wings according to claim 4, characterized in that: The fixed mold base (307) is provided with a demoulding hole (3071) which is in communication with the mounting groove.

6. The injection mold assembly for producing drone wings according to claim 5, characterized in that: A gas distribution pipe is provided at the orifice of each demoulding hole (3071) of the four fixed mold components (306), a gas main pipe is provided between the four gas distribution pipes, the gas main pipe is coaxial with the rotating shaft, an air pump is provided on the gas main pipe via a rotating joint, and a solenoid valve is provided on each of the four gas distribution pipes.

7. The injection mold assembly for producing drone wings according to claim 5, characterized in that: The heating assembly (303) comprises a heating seat (3031) arranged on the mounting bracket (301) in a vertical direction and a first cylinder (3032) for driving the heating seat (3031) to move. The heating seat (3031) is made of a heat-conducting material, and a heating element (3033) is arranged in the heating seat (3031).

8. The injection mold assembly for producing drone wings according to claim 7, characterized in that: A heating protrusion (3034) is provided on the upper surface of the heating seat (3031), and the heating protrusion (3034) can extend into the fixed mold cavity of the fixed mold (308), and the outer surface of the heating protrusion (3034) is in contact with the cavity wall of the fixed mold cavity.

9. The injection mold assembly for producing drone wings according to claim 7, characterized in that: The cooling assembly (302) comprises a cooling seat (3021) arranged on the mounting bracket (301) in a vertical direction and a second cylinder (3022) for driving the cooling seat (3021) to move. The cooling seat (3021) is made of a heat-conducting material and has a shape consistent with that of the movable mold (200).

10. The injection mold assembly for producing drone wings according to claim 9, characterized in that: Initially, the positions of the four fixed mold assemblies (306) are the heating position, the injection position, the cooling position and the demolding position in sequence along the array direction; the fixed mold (308) of the fixed mold assembly (306) at the heating position is located parallel to the top of the heating seat (3031); the fixed mold (308) of the fixed mold assembly (306) at the injection position is parallel to the movable mold (200) and both are located on the same side of the rotating bracket (305); the fixed mold (308) of the fixed mold assembly (306) at the cooling position is located parallel to the bottom of the cooling seat (3021); and the fixed mold assembly (306) at the demolding position and the limiting boss (102) are located on the same side of the rotating bracket (305).

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