Pin-point water gap point glue feeding structure for upper shell and lower shell of unmanned aerial vehicle protection ring

Abstract

The utility model relates to the technical field of unmanned aerial vehicle protection ring production, in particular to an unmanned aerial vehicle protection ring upper and lower shell pin-point gate point glue feeding structure which comprises a top plate and a bottom plate, the bottom face of the top plate is fixedly connected with an upper fixing plate, an upper die is fixed to the bottom face of the upper fixing plate, and the top face of the bottom plate is fixedly connected with a lower fixing plate. A lower mold is fixedly embedded into the top surface of the lower fixing plate, air cylinders are fixed between the four corners of the top plate and the four corners of the bottom plate, a feeding hopper is fixedly embedded into the top surface of the top plate, and a glue feeding mechanism is arranged between the upper mold and the top plate. According to the utility model, external gas can be sucked into the cylinder through the reciprocating motion of the piston in the cylinder at the corresponding position, and then is pressed into the blanking pipe at the corresponding position, so that residual plastic melt in the blanking pipe can be pressed into the cavity, and the cavity is filled with the plastic melt, thereby ensuring the product quality.

Description

Technical Field

[0001] This utility model relates to the field of drone protection ring production technology, specifically a drone protection ring upper and lower shell fine sprue injection glue structure. Background Art

[0002] Unmanned aerial vehicles (UAVs), also known as drones, are aircraft that do not require a pilot to operate them. UAVs can be remotely controlled by a ground control station or fly autonomously through a preset flight program. UAV technology is widely used in military, civilian and commercial fields. During flight, because the propellers of UAVs are exposed, protective rings need to be installed around the propellers to prevent them from colliding with foreign objects and causing damage. The upper and lower shells of the protective rings are usually injection molded using a fine sprue injection method during the production process.

[0003] Currently, when using the fine gate injection method for injection molding, because the fine gate is usually small, higher pressure is required during injection to ensure that the plastic melt can fill the cavity smoothly. However, the pressure applied to the plastic melt during the feeding process is fixed, so it is difficult to ensure that the plastic melt can fill the cavity evenly, which may lead to problems such as unevenness, warping, or weld lines in the product. Utility Model Content

[0004] The purpose of this invention is to provide a glue injection structure for the upper and lower shells of a drone protective ring with fine sprue nozzles, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A glue-injection structure for the upper and lower shells of a drone protective ring includes a top plate and a bottom plate. An upper fixing plate is fixedly connected to the bottom surface of the top plate, and an upper mold is fixedly connected to the bottom surface of the upper fixing plate. A lower fixing plate is fixedly connected to the top surface of the bottom plate, and a lower mold is embedded and fixedly fixed to the top surface of the lower fixing plate. Cylinders are fixed between the four corners of the top plate and the bottom plate. A feed hopper is embedded and fixedly fixed to the top surface of the top plate. A glue-injection mechanism is provided between the upper mold and the top plate.

[0007] Furthermore, the glue feeding mechanism includes a flow divider plate embedded and fixed to the upper fixed plate. The inner top surface of the flow divider plate is fixedly connected to a feeding pipe fixed to the inside of the feeding hopper. Both ends of the inner bottom surface of the flow divider plate are fixedly connected to multiple unloading pipes that penetrate the upper mold. Both ends of the top surface of the top plate are fixedly connected to multiple cylindrical tubes. A piston is slidably connected inside the cylindrical tube. The inner bottom surface of the cylindrical tube is fixedly connected to a conduit that penetrates the flow divider plate and is fixed to the unloading pipe at the corresponding position. The outer wall of the conduit located inside the flow divider plate has multiple feed ports opened at equal angles in a ring shape. An air pipe is fixedly connected through the inner wall of the cylindrical tube.

[0008] Preferably, both the trachea and the first tubing are equipped with a one-way valve, and the piston is made of metal.

[0009] Furthermore, a heating box is fixedly connected to the top surface of the top plate, a heater is installed inside the heating box, and two conduits are fixedly inserted through the opposite sides of the interior of the heating box. One end of the conduit is fixedly connected to a four-way pipe, and both ends of the four-way pipe are fixedly connected to a connecting pipe one that is fixed to an air pipe at a corresponding position. One end of the four-way pipe is fixedly connected to a connecting pipe two that is fixed to an air pipe at a corresponding position.

[0010] Preferably, the second catheter, the four-way tube, the first connecting tube, the second connecting tube, the trachea, and the first catheter are all made of metal.

[0011] Furthermore, the piston has a push rod fixed to its top surface that slides through a cylindrical tube at a corresponding position, a movable plate is fixedly connected between the top ends of the multiple push rods, and an electric push rod fixed to the top plate is fixed at each of the four corners of the bottom surface of the movable plate.

[0012] Furthermore, the top surface of the movable plate has a through hole corresponding to the feed hopper, and the top of the feed hopper is fixedly connected to a feed pipe that penetrates the through hole, the diameter of the through hole being larger than the diameter of the feed pipe.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] By reciprocating the piston within the cylindrical tube at the corresponding position, external gas can be drawn into the cylindrical tube and then pressed into the feed tube at the corresponding position. This allows the residual molten plastic in the feed tube to be forced into the mold cavity, filling the cavity with molten plastic and thus ensuring product quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the glue-feeding mechanism in this utility model;

[0017] Figure 3 This is a schematic diagram of the flow divider in this utility model;

[0018] Figure 4 This is a schematic diagram of the heating air box in this utility model;

[0019] Figure 5 This is a schematic diagram of the movable plate in this utility model.

[0020] In the diagram: 1. Top plate; 11. Upper fixed plate; 12. Upper mold; 13. Feed hopper; 14. Feed pipe; 2. Bottom plate; 21. Lower fixed plate; 22. Lower mold; 23. Cylinder; 3. Glue injection mechanism; 31. Diverter plate; 311. Feed pipe; 312. Discharge pipe; 313. Cylindrical tube; 314. Push rod; 315. Conduit 1; 316. Air pipe; 32. Warm air box; 321. Conduit 2; 322. Four-way pipe; 323. Connecting pipe 1; 33. Moving plate; 331. Electric push rod; 332. Through hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Please see Figures 1-5 In this embodiment of the utility model, a sprue injection structure for the upper and lower shells of a drone protective ring includes a top plate 1 and a bottom plate 2. An upper fixing plate 11 is fixedly connected to the bottom surface of the top plate 1, and an upper mold 12 is fixedly connected to the bottom surface of the upper fixing plate 11. A lower fixing plate 21 is fixedly connected to the top surface of the bottom plate 2, and a lower mold 22 is embedded and fixedly connected to the top surface of the lower fixing plate 21. Cylinders 23 are fixed between the four corners of the top plate 1 and the bottom plate 2. A feed hopper 13 is embedded and fixedly connected to the top surface of the top plate 1. An injection mechanism 3 is provided between the upper mold 12 and the top plate 1.

[0023] The glue feeding mechanism 3 includes a flow divider plate 31 embedded and fixed to the upper fixed plate 11. The inner top surface of the flow divider plate 31 is fixedly connected to a feeding pipe 311 fixed inside the feeding hopper 13. Both ends of the inner bottom surface of the flow divider plate 31 are fixedly connected to multiple unloading pipes 312 that penetrate the upper mold 12. Both ends of the top surface of the top plate 1 are fixedly connected to multiple cylindrical tubes 313. A piston is slidably connected inside the cylindrical tubes 313. The inner bottom surface of the cylindrical tubes 313 is fixedly connected to a conduit 315 that penetrates the flow divider plate 31 and is fixed to the unloading pipe 312 at the corresponding position. The outer wall of the conduit 315 located inside the flow divider plate 31 has multiple feed ports opened at equal angles in an annular shape. An air pipe 316 is fixedly connected through the inner wall of the cylindrical tubes 313.

[0024] Specifically, firstly, the molten plastic is fed into the manifold 31 through the feed hopper 13 and the feeding pipe 311 via an external feeding device. As continuous feeding increases the pressure inside the manifold 31, the molten plastic in the manifold 31 is injected into the cavity between the upper mold 12 and the lower mold 22 through multiple discharge pipes 312 under pressure. Since the diameter of the discharge pipes 312 is usually relatively small, the pressure loss may be relatively large when the molten plastic enters the cavity. Moreover, the feeding time of the molten plastic is fixed, which may result in the cavity not being completely filled with molten plastic. Furthermore, some molten plastic may remain inside the discharge pipes 312 due to the cessation of feeding. To prevent product molding quality issues, the reciprocating movement of the piston within the cylindrical tube 313 at the corresponding position can draw external gas into the cylindrical tube 313 and then press it into the discharge pipe 312 at the corresponding position. This can force the molten plastic remaining in the discharge pipes 312 into the cavity, filling the cavity with molten plastic and thus ensuring product quality.

[0025] Example 1

[0026] like Figure 3 As shown, in this embodiment, both the trachea 316 and the tubing 315 are equipped with one-way valves, and the pistons are made of metal.

[0027] In this embodiment, the one-way valve can pressurize external gas into the cylindrical tube 313, while preventing the plastic melt from being drawn into the cylindrical tube 313. Conversely, it can prevent the gas drawn into the cylindrical tube 313 from flowing out of the gas pipe 316.

[0028] Example 2

[0029] like Figure 4 As shown, in this embodiment, a heating box 32 is fixedly connected to the top surface of the top plate 1. A heater is installed inside the heating box 32. Two conduits 321 are fixedly connected to opposite sides inside the heating box 32. One end of the conduit 321 is fixedly connected to a four-way pipe 322. Both ends of the four-way pipe 322 are fixedly connected to a connecting pipe 323 fixed to the corresponding air pipe 316. One end of the four-way pipe 322 is fixedly connected to a connecting pipe 316 fixed to the corresponding air pipe 316. The conduit 321, the four-way pipe 322, the connecting pipe 323, the connecting pipe 316, and the conduit 315 are all made of metal.

[0030] In this embodiment, the operation of the heater in the warm air box 32 can generate hot airflow. When the piston moves upward, it can draw the hot airflow into the cylindrical tube 313. When the piston moves downward, it can press the hot airflow into the feed pipe 312 and the flow divider 31. This can prevent the residual plastic in the feed pipe 312 and the flow divider 31 from cooling and hardening and blocking the feed pipe 312. The hot airflow pressed into the feed pipe 312 can press the residual plastic melt inside it back into the cavity, so that the cavity is filled with plastic melt.

[0031] Example 3

[0032] like Figure 5 As shown, in this embodiment, a push rod 314 is fixed on the top surface of the piston and slides through the cylindrical tube 313 at the corresponding position. A movable plate 33 is fixedly connected between the top ends of multiple push rods 314. An electric push rod 331 fixed to the top plate 1 is fixed at each of the four corners of the bottom surface of the movable plate 33. A through hole 332 is opened through the top surface of the movable plate 33 at the corresponding position of the feed hopper 13. A feed pipe 14 is fixedly connected to the top end of the feed hopper 13 and passes through the through hole 332. The diameter of the through hole 332 is larger than the diameter of the feed pipe 14.

[0033] In this embodiment, the reciprocating movement of the output ends of the four electric push rods 331 can cause the push rods 314 and the pistons at the corresponding positions to reciprocate within the cylindrical tubes 313 at the corresponding positions. This allows hot air to be drawn into the cylindrical tubes 313 and then pressed into the feed pipes 312 and the flow divider 31. This prevents the residual plastic in the feed pipes 312 and the flow divider 31 from cooling and hardening and blocking the feed pipes 312. The hot air pressed into the feed pipes 312 can also press the residual plastic melt inside back into the cavity, filling the cavity with plastic melt.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0035] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A structure for injecting adhesive through fine sprue nozzles on the upper and lower shells of a drone protective ring, characterized in that, Includes a top plate (1) and a bottom plate (2). The bottom surface of the top plate (1) is fixedly connected to an upper fixing plate (11), and the bottom surface of the upper fixing plate (11) is fixedly connected to an upper mold (12). The top surface of the bottom plate (2) is fixedly connected to a lower fixing plate (21), and the top surface of the lower fixing plate (21) is embedded and fixedly connected to a lower mold (22). Cylinders (23) are fixed between the four corners of the top plate (1) and the bottom plate (2). A feed hopper (13) is embedded and fixedly connected to the top surface of the top plate (1). A glue feeding mechanism (3) is provided between the upper mold (12) and the top plate (1). The glue feeding mechanism (3) includes a flow divider plate (31) embedded and fixed to the upper fixed plate (11). The inner top surface of the flow divider plate (31) is fixedly connected to a feeding pipe (311) fixed inside the feeding hopper (13). Both ends of the inner bottom surface of the flow divider plate (31) are fixedly connected to multiple feeding pipes (312) that penetrate the upper mold (12). Both ends of the top surface of the top plate (1) are fixedly connected to multiple cylindrical tubes (313). A piston is slidably connected inside the cylindrical tube (313). The inner bottom surface of the cylindrical tube (313) is fixedly connected to a conduit (315) that penetrates the flow divider plate (31) and is fixed to the feeding pipe (312) at the corresponding position. The outer wall of the conduit (315) located inside the flow divider plate (31) is provided with multiple feed ports at equal angles in an annular shape. The inner wall of the cylindrical tube (313) is fixedly connected to an air pipe (316).

2. The structure for injecting glue into the upper and lower shells of a UAV protective ring according to claim 1, characterized in that, Both the trachea (316) and the first conduit (315) are equipped with one-way valves, and the piston is made of metal.

3. The structure for injecting glue into the upper and lower shells of a UAV protective ring according to claim 2, characterized in that, A heating box (32) is fixedly connected to the top surface of the top plate (1). A heater is installed inside the heating box (32). Two conduits (321) are fixedly connected to opposite sides inside the heating box (32). One end of the conduit (321) is fixedly connected to a four-way pipe (322). Both ends of the four-way pipe (322) are fixedly connected to a connecting pipe (323) that is fixed to the air pipe (316) at the corresponding position. One end of the four-way pipe (322) is fixedly connected to a connecting pipe (2) that is fixed to the air pipe (316) at the corresponding position.

4. The micro-sprue injection structure for the upper and lower shells of a UAV protective ring according to claim 3, characterized in that, The second catheter (321), the four-way tube (322), the first connecting tube (323), the second connecting tube, the trachea (316), and the first catheter (315) are all made of metal.

5. The structure for injecting glue into the upper and lower shells of a UAV protective ring according to claim 4, characterized in that, The piston has a push rod (314) fixed on its top surface that slides through a cylindrical tube (313) at a corresponding position. A movable plate (33) is fixedly connected between the top ends of the multiple push rods (314). An electric push rod (331) fixed to the top plate (1) is fixed at each of the four corners of the bottom surface of the movable plate (33).

6. The structure for injecting glue into the upper and lower shells of a UAV protective ring according to claim 5, characterized in that, The top surface of the movable plate (33) has a through hole (332) corresponding to the feed hopper (13). The top end of the feed hopper (13) is fixedly connected to a feed pipe (14) that passes through the through hole (332). The diameter of the through hole (332) is larger than the diameter of the feed pipe (14).

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