Underwater positioning signal mark plastic forming device

Abstract

The invention relates to the technical field of injection molding devices, in particular to an underwater positioning letter mark plastic molding device which comprises a workbench, a movable mold and a fixed mold, injection molding holes are formed in the upper end face of the movable mold and the upper end face of the fixed mold, an injection molding nozzle is arranged above the injection molding holes, a melting pipe is arranged on the upper portion of the injection molding nozzle, and the melting pipe is sleeved with a heating ring. An extrusion rod is arranged at the upper part of the melting pipe; a movable mold preheating bin is arranged on the upper portion of the workbench, and a movable mold containing plate is welded to the inner wall of the left side of the movable mold preheating bin. A heat-conducting partition plate is arranged at the upper part of the movable mold preheating bin; a through hole is formed in the heat-conducting partition plate; a raw material preheating bin is arranged on the upper portion of the heat conduction partition plate, and a heating block is arranged on the inner wall of the left side of the raw material preheating bin. The heat generated by all links and parts during injection molding is fully utilized for preheating the mold and raw materials, and the technical problem that in the prior art, when the mold is preheated, a large amount of energy needs to be additionally consumed is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding devices, and specifically relates to an underwater positioning beacon injection molding device. Background Art

[0002] An underwater positioning beacon is an acoustic device used for underwater target positioning, mainly applied to search for key components such as black boxes after aircraft accidents, and is also extended to fields such as ocean exploration and underwater engineering. In order to ensure its waterproof and sealing performance, and at the same time to adapt to the harsh working environment of the seabed, the underwater positioning beacon also needs to have good corrosion resistance and high-pressure resistance. Therefore, using one-shot injection molding to manufacture the shell of the underwater positioning beacon is the most common process.

[0003] During the use of an injection molding machine, in order to ensure product quality and mold life, the mold needs to be preheated. If the mold temperature is too low, the melt will rapidly cool and shrink, forming uneven residual stress, which may cause product deformation or cracking; preheating makes the mold temperature uniform, can improve the melt fluidity, reduce defects such as flow marks and weld lines, and ensure product dimensional accuracy and surface finish. However, when preheating the mold, a large amount of energy needs to be consumed additionally. Summary of the Invention

[0004] The purpose of the present invention is to provide an underwater positioning beacon injection molding device to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An underwater positioning beacon injection molding device, including a workbench. On the upper end surface of the workbench, a moving mold and a fixed mold are respectively arranged on the left and right sides. On the upper end surfaces of the moving mold and the fixed mold, injection holes are provided. Above the injection holes, an injection nozzle is provided. Above the injection nozzle, a melting tube is provided. On the right side of the melting tube, an injection nozzle driving part is provided, and the melting tube is welded and fixed to the injection nozzle driving part; the injection nozzle is communicated with the melting tube. An induction heating coil is sleeved outside the melting tube. Above the melting tube, an extrusion rod is provided, and the top end of the extrusion rod is connected to an extrusion rod driving part.

[0006] As a preference of the above technical solution, a moving mold preheating chamber is arranged on the upper part of the workbench. On the left inner wall of the moving mold preheating chamber, a moving mold placement plate is welded; on the upper part of the moving mold preheating chamber, a heat-conducting partition board is provided, and through holes are opened on the heat-conducting partition board, and the positions of the through holes correspond to the positions of the melting tubes.

[0007] Preferably, as the above technical solution, a raw material preheating bin is provided on the upper part of the heat-conducting partition board. A heating block is provided on the left inner wall of the raw material preheating bin. A positioning hole is formed on the upper end surface of the raw material preheating bin. The extrusion rod sequentially passes upward through the through hole and the positioning hole, and the top end of the extrusion rod is connected with an extrusion rod driving member; a feeding port is further formed on the upper end surface of the raw material preheating bin.

[0008] Preferably, as the above technical solution, a first sliding groove is formed on the upper end surface of the workbench. A first sliding block is welded to the lower end surface of the moving die. The left end surface of the moving die is connected with a moving die quick-release member. The left end surface of the moving die quick-release member is connected with a moving die driving member. The moving die driving member extends leftward out of the inner cavity of the moving die preheating bin.

[0009] Preferably, as the above technical solution, the moving die quick-release member includes an L-shaped quick-release plate. A pin is provided on the upper end surface of the quick-release plate. The left side surface of the quick-release plate is bolted and fixed to the moving die driving member; the quick-release plate and the moving die can be quickly disassembled and assembled by using the pin.

[0010] Preferably, as the above technical solution, the extrusion rod driving member includes a coupling. A driving screw rod is provided on the upper part of the coupling. The extrusion rod and the driving screw rod are connected through the coupling. An installation frame is further provided on the upper part of the driving screw rod. A threaded connection sleeve is provided on the upper end surface of the installation frame. The driving screw rod passes upward through the installation frame and is threadedly engaged and installed in the threaded connection sleeve. A turntable is welded to the top end of the driving screw rod.

[0011] Preferably, as the above technical solution, the injection nozzle driving member includes a reinforcing connecting rod. An installation groove is formed on the right side wall of the moving die preheating bin. The left end of the reinforcing connecting rod is welded and fixed to the melting pipe. A lifting plate is provided on the right side of the reinforcing connecting rod. The right end of the reinforcing connecting rod passes rightward through the installation groove and is slidably installed up and down in the lifting plate. A cylinder is connected to the lower part of the reinforcing connecting rod.

[0012] Preferably, as the above technical solution, a material guiding plate is provided on the heat-conducting partition board. The through hole is formed at the bottom of the material guiding plate. A material guiding sleeve is welded below the through hole. The material guiding sleeve is communicated with the through hole. The melting pipe is arranged inside the material guiding sleeve; Preferably, as the above technical solution, a bin door is formed on the front end surface of the moving die preheating bin. A bin cover is provided at the front part of the bin door.

[0013] Preferably, as the above technical solution, a second sliding block is provided on the rear side surface of the bin cover. A second sliding groove is formed on the front end surface of the moving die preheating bin. The second sliding block is slidably clamped up and down in the second sliding groove.

[0014] The present invention provides an underwater positioning signal marking injection molding device, which has the following beneficial effects: 1. The raw materials in the raw material preheating bin are preheated by heating blocks. The preheated raw materials can directly slide into the melting tube under the guiding action of the guiding plate to complete the filling of the raw materials in the melting tube. Then, the extrusion rod is driven to extend into the melting tube. The extrusion rod has the technical effect of sealing the melting tube to prevent the raw materials in the raw material preheating bin from continuing to enter the melting tube, thus realizing the quantitative filling of raw materials each time.

[0015] 2. After injection molding and preliminary cooling, the moving mold driving part drives the moving mold and the fixed mold to separate. Then, the moving mold quick-release part is used to remove the moving mold together with the underwater positioning beacon housing therein, and the moving mold is taken out from the cover of the bin and cooled outdoors. During this process, the operator can remove another preheated moving mold placed on the moving mold placement plate and install it on the moving mold quick-release part, and repeat the above operations to complete the next injection molding operation.

[0016] 3. After injection molding, the extrusion rod is lifted upward. When the extrusion rod is separated from the melting tube, the preheated raw materials can directly slide into the melting tube under the guiding action of the guiding plate to complete the filling of the raw materials in the melting tube again, realizing cyclic operation.

[0017] 4. During the injection molding process, the heat conducting partition can exchange the heat in the moving mold preheating bin and the raw material preheating bin, making full use of the heat in the moving mold preheating bin and the raw material preheating bin. The heat sources include the heat generated by the heating coils and heating blocks during operation, the heat generated by the raw materials melted by the heating coils in the melting tube, and the heat generated by the molten material injected into the moving mold and the fixed mold. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic external view of the present invention; Figure 3 is a schematic structural diagram of the moving mold quick-release part and the moving mold driving part in the present invention; Figure 4 is a cross-sectional view of the raw material preheating bin and the moving mold preheating bin in the present invention; Figure 5 is Figure 4 a cross-sectional view of part A in

[0019] In the figure: 1, workbench; 2, moving mold; 3, fixed mold; 4, injection hole; 5, injection nozzle; 6, melting tube; 7, heating coil; 8, moving mold preheating chamber; 9, heat conduction partition; 10, raw material preheating chamber; 11, heating block; 12, through hole; 13, extrusion rod; 14, positioning hole; 15, moving mold quick-release part; 16, feeding port; 17, extrusion rod driving part; 18, injection nozzle driving part; 19, strengthening support plate; 20, first chute; 21, first slider; 22, quick-release plate; 23, pin; 24, moving mold driving part; 25, coupling; 26, mounting bracket; 27, threaded connection sleeve; 28, driving screw; 29, turntable; 30, strengthening connecting rod; 31, mounting groove; 32, lifting plate; 33, cylinder; 34, material guiding plate; 35, material guiding sleeve; 36, bin door; 37, bin cover; 38, second chute; 39, second slider; 40, moving mold placing plate. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] As Figure 1 shown, in this embodiment, an underwater positioning signal injection molding device includes a workbench 1. On the upper end surface of the workbench 1, a moving mold 2 and a fixed mold 3 are respectively arranged on the left and right sides. An injection hole 4 is arranged on the upper end surfaces of the moving mold 2 and the fixed mold 3. An injection nozzle 5 is arranged above the injection hole 4. A melting tube 6 is arranged above the injection nozzle 5. An injection nozzle driving part 18 is arranged on the right side of the melting tube 6, and the melting tube 6 is welded and fixed to the injection nozzle driving part 18; the injection nozzle 5 is communicated with the melting tube 6. A heating coil 7 is sleeved outside the melting tube 6. An extrusion rod 13 is arranged above the melting tube 6, and the top end of the extrusion rod 13 is connected with an extrusion rod driving part 17; A moving mold preheating chamber 8 is arranged above the workbench 1. A moving mold placing plate 40 is welded and arranged on the left inner wall of the moving mold preheating chamber 8 for placing the moving mold 2 to be preheated; a heat conduction partition 9 is arranged above the moving mold preheating chamber 8. A through hole 12 is opened on the heat conduction partition 9, and the position of the through hole 12 corresponds to that of the melting tube 6; the heat conduction partition 9 can exchange the heat in the moving mold preheating chamber 8 and the raw material preheating chamber 10, and make full use of the heat in the moving mold preheating chamber 8. Among them, the heating coil 7 generates heat by itself during work, the raw material melted by the heating coil 7 in the melting tube 6 will generate heat, and the molten material injected into the moving mold 2 and the fixed mold 3 will also generate heat; Above the heat-conducting partition plate 9, there is a raw material preheating bin 10. On the left inner wall of the raw material preheating bin 10, there is a heating block 11. On the upper end face of the raw material preheating bin 10, there is a positioning hole 14. The extrusion rod 13 sequentially passes upward through the through hole 12 and the positioning hole 14. The top end of the extrusion rod 13 is connected to an extrusion rod driving member 17. By driving the extrusion rod 13 to rotate and move up and down through the extrusion rod driving member 17, the extrusion rod 13 can rotate and extrude the molten material in the molten tube 6. On the upper end face of the raw material preheating bin 10, there is also a feeding port 16 for putting in raw materials, and the raw materials are preheated through the heating block 11 in the inner cavity of the raw material preheating bin 10. In this way, it can not only accelerate the speed of the raw materials entering the molten tube 6 and being heated and melted, but also the heat in the raw material preheating bin 10 and the moving mold preheating bin 8 will be fully exchanged through the heat-conducting partition plate 9, and at the same time, it is applied to the preheating of the moving mold 2 to be used on the moving mold placing plate 40 and the preheating of the raw materials in the raw material preheating bin 10, realizing the full utilization of heat.

[0022] It should be noted that the moving mold 2, the fixed mold 3, the injection nozzle 5, the molten tube 6 and the heating coil 7 are all in the inner cavity of the moving mold preheating bin 8. The heating coil 7 and the heating block 11 are externally connected to a power supply through wires, which is common knowledge in this field, so no more description will be given.

[0023] In specific implementation, a strengthening support plate 19 is also provided on the upper end face of the workbench 1. The strengthening support plate 19 is bolted to the right side face of the moving mold 2. A cover plate is provided on the feeding port 16, achieving the technical effects of dust prevention and heat preservation.

[0024] As an implementation method in this embodiment, please refer to Figure 1 and Figure 3 , on the upper end face of the workbench 1, there is a first sliding groove 20. The lower end face of the moving mold 2 is welded with a first sliding block 21. The left end face of the moving mold 2 is connected to a moving mold quick-release member 15. The left end face of the moving mold quick-release member 15 is connected to a moving mold driving member 24. The moving mold driving member 24 extends leftward out of the inner cavity of the moving mold preheating bin 8. The moving mold driving member 24 can drive the moving mold 2 to slide left and right in the first sliding groove 20. The moving mold quick-release member 15 can be used for the quick disassembly and assembly of the moving mold 2. After the injection-molded moving mold 2 is separated from the fixed mold 3, the moving mold 2 is removed from the moving mold quick-release member 15 and taken out of the inner cavity of the moving mold preheating bin 8 for cooling and demolding operations. Then, the preheated moving mold 2 placed on the moving mold placing plate 40 is installed using the moving mold quick-release member 15 to continue the next injection molding operation.

[0025] It should be noted that the fixed mold 3 is bolted to the workbench 1. When the fixed mold 3 cannot be used and needs to be replaced, such as when the residues in the fixed mold 3 need to be cleaned, the fixed mold 3 can be disassembled and replaced. This process is common knowledge in this field, so no more description will be given.

[0026] Furthermore, the movable mold quick-release part 15 includes an L-shaped quick-release plate 22. A pin 23 is arranged on the upper end face of the quick-release plate 22, and the left side face of the quick-release plate 22 is fixedly bolted to the movable mold driving part 24. The quick disassembly and assembly of the quick-release plate 22 and the movable mold 2 can be realized by using the pin 23.

[0027] It should be noted that insertion holes corresponding in position are provided on the quick-release plate 22 and the movable mold 2 for the insertion and extraction of the pin 23 to realize the disassembly and assembly of the quick-release plate 22 and the movable mold 2. This is common knowledge in the art, so no more description will be given.

[0028] In specific implementation, the movable mold driving part 24 is a screw driving mechanism driven manually or electrically or a hydraulic driving mechanism controlled by a PLC.

[0029] As an implementation manner in this embodiment, please refer to Figure 1 and Figure 2 , the extrusion rod driving part 17 includes a coupling 25. A driving screw 28 is arranged on the upper part of the coupling 25. The extrusion rod 13 and the driving screw 28 are connected through the coupling 25. An installation frame 26 is further arranged on the upper part of the driving screw 28. A threaded connection sleeve 27 is arranged on the upper end face of the installation frame 26. The driving screw 28 passes upward through the installation frame 26 and is threadedly engaged and installed in the threaded connection sleeve 27. A turntable 29 is welded at the top end of the driving screw 28. By driving the turntable 29 to rotate, while the driving screw 28 rotates, it moves up and down, and the extrusion rod 13 rotates and moves up and down accordingly, so that the extrusion rod 13 plays a role in rotating and extruding the molten raw material in the molten tube 6.

[0030] It should be noted that the turntable 29 is rotated manually or electrically. Manual rotation is more cost-saving and energy-saving, while electric rotation can more accurately control the extrusion speed of the molten raw material in the molten tube 6.

[0031] As an implementation manner in this embodiment, please refer to Figure 1 and Figure 2 , the injection nozzle driving part 18 includes a reinforcing connecting rod 30. An installation groove 31 is formed on the right side wall of the movable mold preheating chamber 8. The left end of the reinforcing connecting rod 30 is fixedly welded to the molten tube 6. A lifting plate 32 is arranged on the right side of the reinforcing connecting rod 30. The right end of the reinforcing connecting rod 30 passes through the installation groove 31 to the right and is slidably installed up and down in the lifting plate 32. A cylinder 33 is connected to the lower part of the reinforcing connecting rod 30. The long and narrow design of the reinforcing connecting rod 30 greatly improves its bending strength, which can not only ensure the stability of driving the molten tube 6 up and down, but also minimize the area of the installation groove 31, greatly reducing the loss of temperature in the movable mold preheating chamber 8.

[0032] It should be noted that a clamping groove is machined on the left side wall of the lifting plate 32, enabling the installation groove 31 to slide up and down therein. This is common knowledge in the art, so no further description will be given.

[0033] In specific implementation, the air cylinder 33 is controlled by a PLC, enabling the injection nozzle 5 and the injection hole 4 to be accurately aligned.

[0034] As an implementation manner in this embodiment, please refer to Figure 4 and Figure 5 , a material guiding plate 34 is arranged on the heat conducting partition plate 9, the through hole 12 is opened at the bottom of the material guiding plate 34, a material guiding sleeve 35 is welded below the through hole 12, the material guiding sleeve 35 is communicated with the through hole 12, and a melting tube 6 is arranged inside the material guiding sleeve 35; It should be noted that the outer wall of the melting tube 6 is attached to the inner wall of the material guiding sleeve 35 and the melting tube 6 can slide up and down inside the material guiding sleeve 35.

[0035] In specific implementation, the outer wall of the melting tube 6 is attached to the inner wall of the material guiding sleeve 35. When the extrusion rod 13 is separated from the melting tube 6, the preheated raw materials in the raw material preheating bin 10 can directly slide into the melting tube 6 under the guiding action of the material guiding plate 34, completing the loading of the raw materials in the melting tube 6; then the extrusion rod 13 is driven to extend into the melting tube 6. The extrusion rod 13 has the technical effect of sealing the melting tube 6, preventing the raw materials in the raw material preheating bin 10 from continuing to enter the melting tube 6, and realizing the quantitative filling of raw materials each time.

[0036] As an implementation manner in this embodiment, please refer to Figure 2 , a bin door 36 is opened on the front end face of the moving mold preheating bin 8, and a bin cover 37 is arranged in front of the bin door 36, which is convenient for disassembling, installing, taking and placing the moving mold 2 in the moving mold preheating bin 8.

[0037] Furthermore, a second sliding block 39 is arranged on the rear side face of the bin cover 37, and a second sliding groove 38 is opened on the front end face of the moving mold preheating bin 8. The second sliding block 39 is slidably clamped up and down in the second sliding groove 38, enabling the opening and closing of the bin cover 37 and ensuring that the heat in the moving mold preheating bin 8 does not escape.

[0038] It should be noted that fixing parts are arranged on the bin cover 37, which can fix the bin cover 37 when the bin cover 37 is opened. This technology is common knowledge in the art, so no further description will be given.

[0039] The present invention provides an underwater positioning signal injection molding device, and the specific working principle is as follows: The raw material preheating bin 10 is used to put raw materials and preheat the raw materials in the raw material preheating bin 10 through the heating block 11. The preheated raw materials can directly slide into the melting tube 6 under the guiding action of the guiding plate 34 to complete the filling of the raw materials in the melting tube 6. Then, the extrusion rod 13 is driven to extend into the melting tube 6. The extrusion rod 13 has the technical effect of sealing the melting tube 6, avoiding the continuous entry of the raw materials in the raw material preheating bin 10 into the melting tube 6, and realizing the quantitative filling of raw materials each time.

[0040] After the raw material filling is completed, the heating coil 7 heats and melts the raw materials in the melting tube 6. At this time, the moving mold driving part 24 drives the moving mold 2 and the fixed mold 3 to complete the mold closing. After the melting is completed, the injection nozzle driving part 18 drives the injection nozzle 5 and the injection hole 4 to be docked. The extrusion rod 13 continuously rotates and presses down under the drive of the drive screw 28, so that the extrusion rod 13 has the effect of rotating and extruding the molten raw materials in the melting tube 6, and completes the injection molding operation of the moving mold 2 and the fixed mold 3.

[0041] After the injection molding is completed, after preliminary cooling, the moving mold driving part 24 drives the moving mold 2 and the fixed mold 3 to separate the molds. Then, the moving mold quick-release part 15 is used to remove the moving mold 2 together with the underwater positioning beacon housing therein, and the moving mold 2 is taken out from the cover 37 of the bin and cooled outdoors. During this process, the operator can remove another preheated moving mold 2 placed on the moving mold placement plate 40 and install it on the moving mold quick-release part 15, and repeat the above operations to complete the next injection molding operation.

[0042] After the injection molding is completed, the extrusion rod 13 is lifted upward. When the extrusion rod 13 is separated from the melting tube 6, the preheated raw materials can directly slide into the melting tube 6 under the guiding action of the guiding plate 34, and the filling of the raw materials in the melting tube 6 is completed again, realizing the cyclic operation.

[0043] During the injection molding process, the heat conduction partition 9 can exchange the heat in the moving mold preheating bin 8 and the raw material preheating bin 10, making full use of the heat in the moving mold preheating bin 8 and the raw material preheating bin 10. The heat sources include the heat generated by the heating coil 7 and the heating block 11 during operation, the heat generated by the raw materials melted by the heating coil 7 in the melting tube 6, and the heat generated by the molten material injected into the moving mold 2 and the fixed mold 3.

[0044] The present invention makes full use of the heat generated in each link and component during injection molding to preheat the mold and raw materials, and solves the technical problem that a large amount of additional energy is required to preheat the mold in the prior art.

[0045] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An underwater positioning beacon injection molding device, comprising a workbench (1), characterized in that: On the upper end surface of the workbench (1), a moving mold (2) and a fixed mold (3) are respectively arranged on the left and right sides. An injection hole (4) is arranged on the upper end surfaces of the moving mold (2) and the fixed mold (3). An injection nozzle (5) is arranged above the injection hole (4). A melting tube (6) is arranged on the upper part of the injection nozzle (5). An injection nozzle driving part (18) is arranged on the right side of the melting tube (6). The melting tube (6) is fixedly welded to the injection nozzle driving part (18); the injection nozzle (5) is communicated with the melting tube (6). A heating coil (7) is sleeved outside the melting tube (6). An extrusion rod (13) is arranged on the upper part of the melting tube (6). The top end of the extrusion rod (13) is connected to an extrusion rod driving part (17).

2. The underwater positioning beacon injection molding device according to claim 1, characterized in that: A moving mold preheating chamber (8) is arranged on the upper part of the workbench (1). A moving mold placing plate (40) is fixedly welded to the left inner wall of the moving mold preheating chamber (8); A heat-conducting partition plate (9) is arranged on the upper part of the moving mold preheating chamber (8). A through hole (12) is formed in the heat-conducting partition plate (9), and the position of the through hole (12) corresponds to that of the melting tube (6).

3. An underwater positioning beacon injection molding device according to claim 2, characterized in that: A raw material preheating chamber (10) is arranged on the upper part of the heat-conducting partition plate (9). A heating block (11) is arranged on the left inner wall of the raw material preheating chamber (10). A positioning hole (14) is formed in the upper end surface of the raw material preheating chamber (10). The extrusion rod (13) sequentially passes upward through the through hole (12) and the positioning hole (14). The top end of the extrusion rod (13) is connected to an extrusion rod driving part (17); An inlet (16) is also formed in the upper end surface of the raw material preheating chamber (10).

4. An underwater positioning beacon injection molding device according to claim 3, characterized in that: A first sliding groove (20) is formed in the upper end surface of the workbench (1). A first sliding block (21) is fixedly welded to the lower end surface of the moving mold (2). A moving mold quick-release part (15) is connected to the left end surface of the moving mold (2). A moving mold driving part (24) is connected to the left end surface of the moving mold quick-release part (15). The moving mold driving part (24) extends leftward out of the inner cavity of the moving mold preheating chamber (8).

5. An underwater positioning beacon injection molding device according to claim 4, characterized in that: The moving mold quick-release part (15) includes an L-shaped quick-release plate (22). A pin (23) is arranged on the upper end surface of the quick-release plate (22). The left side surface of the quick-release plate (22) is bolted to the moving mold driving part (24); The quick-release plate (22) and the moving mold (2) can be quickly disassembled and assembled by using the pin (23).

6. The underwater positioning beacon injection molding device according to claim 1, characterized in that: The extrusion rod driving part (17) includes a coupling (25). A driving screw rod (28) is arranged on the upper part of the coupling (25). The extrusion rod (13) is connected to the driving screw rod (28) through the coupling (25). An installation frame (26) is also arranged on the upper part of the driving screw rod (28). A threaded connection sleeve (27) is arranged on the upper end surface of the installation frame (26). The driving screw rod (28) passes upward through the installation frame (26) and is threadedly engaged and installed in the threaded connection sleeve (27). A turntable (29) is fixedly welded to the top end of the driving screw rod (28).

7. An underwater positioning beacon injection molding device according to claim 1, characterized in that: The injection nozzle driving member (18) includes a reinforcing connecting rod (30). An installation groove (31) is formed in the right side wall of the moving mold preheating chamber (8). The left end of the reinforcing connecting rod (30) is fixedly welded to the melting tube (6). A lifting plate (32) is arranged on the right side of the reinforcing connecting rod (30). The right end of the reinforcing connecting rod (30) passes through the installation groove (31) rightward and is installed in the lifting plate (32) in a vertically sliding manner. A cylinder (33) is connected to the lower part of the reinforcing connecting rod (30).

8. An underwater positioning beacon injection molding device according to claim 2, characterized in that: A material guiding plate (34) is arranged on the heat conducting partition plate (9). A through hole (12) is formed in the bottom of the material guiding plate (34). A material guiding sleeve (35) is welded and arranged below the through hole (12). The material guiding sleeve (35) is communicated with the through hole (12). The melting tube (6) is arranged inside the material guiding sleeve (35).

9. An underwater positioning beacon injection molding device according to claim 2, characterized in that: A hatch door (36) is formed in the front end face of the moving mold preheating chamber (8). A hatch cover (37) is arranged in front of the hatch door (36).

10. An underwater positioning beacon injection molding device according to claim 9, characterized in that: A second sliding block (39) is arranged on the rear side face of the hatch cover (37). A second sliding groove (38) is formed in the front end face of the moving mold preheating chamber (8). The second sliding block (39) is installed in the second sliding groove (38) in a vertically sliding and clamping manner.

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