Plastic fuel tank water cooling shaping frame

Abstract

The application discloses a plastic fuel tank water-cooling shaping frame and belongs to the field of fuel tank production, which comprises a rack, an electric telescopic rod fixedly installed on the inner top wall of the rack, a plurality of groups of first thrust springs fixedly connected to the bottom of a pressing plate, a sealing plate fixedly connected to the bottom of each group of the first thrust springs, a cooling cavity formed in the inside of a main body of the shaping frame, cooling liquid arranged in the cooling cavity, a pressure assembly arranged in the inside of the main body of the shaping frame, and the pressure assembly used for injecting the cooling liquid into an accelerating flow channel. The pressure assembly, the accelerating flow channel, the first accelerating cavity and the second accelerating cavity are designed, the pressure assembly works, the cooling liquid flows in the accelerating flow channel, the cooling liquid is accelerated by the first accelerating cavity and the second accelerating cavity and then enters the inside of the rack, the flowing speed of the cooling water in the inside of the rack is increased, the heat exchange efficiency of the cooling water when the cooling water contacts the plastic fuel tank is improved, and the cooling effect of the plastic fuel tank is improved.

Description

Technical Field

[0001] This invention relates to the field of fuel tank manufacturing, and more specifically, to a water-cooled shaping frame for plastic fuel tanks. Background Technology

[0002] A fuel tank is a container used to store fuel for a vehicle or equipment. Manufacturing a fuel tank requires considering multiple factors to ensure safe and reliable fuel storage and supply. Due to its advantages such as light weight, corrosion resistance, and lower cost, plastic fuel tanks, especially those made of high-density polyethylene and polypropylene, have become increasingly popular in recent years.

[0003] The manufacturing process of plastic fuel tanks is usually injection molding. Although the molten plastic begins to cool during the injection molding process, it is still at a high temperature and needs further cooling to reach room temperature and solidify. Therefore, existing technology often places the formed plastic fuel tanks in a water tank filled with coolant to cool them down. The water tanks filled with coolant in existing workshops are relatively large, which can cool plastic fuel tanks in large quantities. However, because the coolant is not flowing, the temperature of the coolant cannot be exchanged in time when cooling the plastic fuel tank, resulting in local overheating of the coolant and a decrease in the cooling efficiency of the coolant on the plastic fuel tank. To address this, a water-cooled forming frame for plastic fuel tanks is proposed. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of this invention is to provide a water-cooled shaping frame for plastic fuel tanks.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] A water-cooled shaping frame for a plastic fuel tank includes a frame, an electric telescopic rod fixedly installed on the inner top wall of the frame, a shaping frame body fixedly installed on the frame, a pressure plate fixedly connected to the telescopic end of the electric telescopic rod, multiple sets of first thrust springs fixedly connected to the bottom of the pressure plate, and a sealing plate fixedly connected to the bottom of each set of first thrust springs. A cooling chamber is provided inside the shaping frame body, and coolant is provided inside the cooling chamber. A pressure assembly is provided inside the shaping frame body. A first cooling frame is fixedly installed on the inner wall of the cooling chamber. First acceleration chambers are interconnected and opened around the perimeter of the first cooling frame. A second cooling frame is also slidably and sealingly installed on the inner wall of the cooling chamber. Second acceleration chambers are interconnected and opened around the perimeter of the second cooling frame. Corner posts are fixedly installed at the four corners of the inner wall of the cooling chamber, and acceleration channels communicating with the first and second acceleration chambers are opened inside the corner posts. The pressure assembly is used to inject coolant into the acceleration channels.

[0007] Furthermore, the first cooling rack is used to place the plastic fuel tank. There is a gap between the upper side of the first cooling rack and the inner wall of the cooling cavity. Each set of corner posts has a rounded corner design. The upper part of the first cooling rack is arched, and the lower part of the second cooling rack is arched. The second cooling rack is a rectangular frame.

[0008] Furthermore, there is a space between the cooling chamber and the bottom of the first cooling rack. The central part of the first cooling rack is a grid plate. The grid plate has interconnected and crisscrossing cooling channels. The cooling channels are connected to the first acceleration chamber. The bottom of the grid plate has multiple sets of first spray holes. Each set of first spray holes is vertically downward and connected to the cooling channels. The outer walls around the first cooling rack have multiple sets of second spray holes.

[0009] Furthermore, the interior of the shaping frame body is provided with sliding grooves on all four sides, and each set of sliding grooves extends upward to the exterior of the shaping frame body. The pressure assembly includes sliding rods that are slidably disposed in each set of sliding grooves. The top of the sliding rods extends upward to the exterior of the shaping frame body. The interior of the shaping frame body is provided with piston chambers on all four sides, and each set of piston chambers is connected to a sliding groove. A piston body is slidably and sealed at the top of the piston chamber. The piston body is fixedly connected to the sliding rod, and the piston chamber is connected to the acceleration flow channel.

[0010] Furthermore, a tension spring is provided in the slide groove, the tension spring is sleeved on the outer surface of the slide rod, the top end of the tension spring is fixedly connected to the top end of the inner wall of the slide groove, and the bottom end of the tension spring is fixedly connected to the piston body.

[0011] Furthermore, the sealing plate is slidably sealed in the cooling cavity. The sealing plate has first slots on both sides of its side walls, and second slots are respectively provided on the inner walls of both sides of the cooling cavity. The inner wall of the cooling cavity also has a circular hole, in which a handle is slidably disposed. The circular hole communicates with the second slot, and a locking block is slidably disposed in the second slot.

[0012] Furthermore, each group of second nozzles is arranged obliquely upwards, one end of each group of second nozzles is connected to the first acceleration chamber, and the other end of each group of second nozzles is connected to the gap between the first cooling frame and the inner wall of the cooling chamber. The inner wall of the second cooling frame has multiple groups of third nozzles, and the outer side of the bottom of the second cooling frame has multiple groups of fourth nozzles. Each group of fourth nozzles is arranged obliquely downwards, and each group of third nozzles is connected to the gap between the first cooling frame and the inner wall of the cooling chamber. Both the third and fourth nozzles are connected to the second acceleration chamber.

[0013] Furthermore, the locking block engages with the first locking slot, the locking block is fixedly connected to the handle, and the end of the handle away from the locking block extends to the outside of the shaping frame body. A second thrust spring is provided in the second locking slot, the second thrust spring is sleeved on the outer surface of the handle, one end of the second thrust spring is fixedly connected to the inner wall of the second locking slot, and the other end of the second thrust spring is fixedly connected to the locking block.

[0014] Furthermore, the length of the first thrust spring in its relaxed state is the same as the length of the portion of the slide bar extending outside the main body of the shaping frame.

[0015] Furthermore, the top of the cooling chamber is provided with a groove that engages with the sealing plate, and the sealing plate engaging in the groove enables the second acceleration chamber to communicate with the acceleration flow channel.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] (1) This application, by setting up a pressure component, an acceleration channel, a first acceleration chamber and a second acceleration chamber, the pressure component works, so that the coolant flows in the acceleration channel, and the coolant is accelerated by the first acceleration chamber and the second acceleration chamber before entering the frame, which can increase the flow speed of the cooling water in the frame and improve the heat exchange efficiency of the cooling water when it comes into contact with the plastic fuel tank, thereby improving the cooling effect of the plastic fuel tank.

[0018] (2) By setting up a pressure assembly, a first cooling rack and a second cooling rack, when the pressure assembly injects coolant into the acceleration channel, the coolant will be divided into two in the acceleration channel and enter the first acceleration chamber and the second acceleration chamber respectively. Through the design of the first nozzle, the second nozzle, the third nozzle, the fourth nozzle and the cooling channel, the coolant in the entire cooling chamber can be effectively disturbed, the heat exchange efficiency of the coolant in the entire cooling chamber can be accelerated, and the cooling efficiency of the entire plastic fuel tank can be further improved.

[0019] (3) By setting up an electric telescopic rod and a pressure assembly, after the sealing plate seals the cooling chamber, the electric telescopic rod moves up and down repeatedly, and the pressure assembly repeatedly draws and sprays out the coolant in the cooling chamber, thereby increasing the disorder of the coolant inside the cooling chamber, further disturbing the coolant in the cooling chamber, and further improving the cooling efficiency.

[0020] (4) By setting up a pressure component and adding pigment to the coolant, this application can perform quality inspection on the molded plastic fuel tank, remove the plastic fuel tank from the cooling chamber, wipe off the coolant on the surface of the molded plastic fuel tank, and detect whether the surface has cracks with pigment to judge the quality of the plastic fuel tank. The pigment in the cracks can also mark the defective plastic fuel tank. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall front structure of the present invention;

[0022] Figure 2 This is a front cross-sectional view of the overall structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the structural pressure plate, the first thrust spring, and the sealing plate of the present invention;

[0024] Figure 4 This is a top view of the first cooling rack of the present invention;

[0025] Figure 5 This is a bottom view of the first cooling rack of the present invention;

[0026] Figure 6 This is a top cross-sectional view of the first cooling rack of the present invention;

[0027] Figure 7 This is a cross-sectional view of the internal structure of the main body of the structural frame of the present invention;

[0028] Figure 8 This is a front sectional view of the internal structure of the main body of the structural forming frame of the present invention;

[0029] Figure 9 This is a side sectional view of the internal structure of the main body of the structural forming frame of the present invention;

[0030] Figure 10 This is an exploded cross-sectional view of the second cooling rack of the present invention;

[0031] Figure 11 This is a front sectional view of the second cooling rack of the present invention;

[0032] Figure 12 For the present invention Figure 2 Enlarged front view of the structure at point A.

[0033] Explanation of the labels in the diagram:

[0034] 1. Frame; 2. Electric telescopic rod; 3. Main body of the shaping frame; 4. Pressure plate; 5. First thrust spring; 6. Sealing plate; 7. Cooling chamber; 8. Pressure assembly; 9. First cooling rack; 10. First acceleration chamber; 11. Second cooling rack; 12. Second acceleration chamber; 13. Corner post; 14. Acceleration channel; 15. Grid plate; 16. Cooling channel; 17. First nozzle; 18. Second nozzle; 19. Slide groove; 20. Slide rod; 21. Piston chamber; 22. Piston body; 23. Tension spring; 24. First slot; 25. Second slot; 26. Round hole; 27. Hand lever; 28. Locking block; 29. ​​Third nozzle; 30. Fourth nozzle; 31. Second thrust spring; 32. Groove. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1 to 12 A water-cooled shaping frame for a plastic fuel tank includes a frame 1. An electric telescopic rod 2 is fixedly installed on the top wall of the frame 1. A shaping frame body 3 is fixedly installed on the frame 1. A pressure plate 4 is fixedly connected to the telescopic end of the electric telescopic rod 2. Multiple sets of first thrust springs 5 ​​are fixedly connected to the bottom of the pressure plate 4. The bottom of each set of first thrust springs 5 ​​is fixedly connected to the same sealing plate 6. A cooling chamber 7 is opened inside the shaping frame body 3, and coolant is provided inside the cooling chamber 7. A pressure component 8 is provided inside the shaping frame body 3. A first cooling rack 9 is fixedly installed on the inner wall of the cooling chamber 7. A first acceleration chamber 10 is opened around the first cooling rack 9 and is interconnected. A second cooling rack 11 is also slidably sealed on the inner wall of the cooling chamber 7. A second acceleration chamber 12 is opened around the second cooling rack 11 and is interconnected. Corner posts 13 are fixedly installed at the four corners of the inner wall of the cooling chamber 7. An acceleration flow channel 14 is opened inside the corner post 13 and is connected to the first acceleration chamber 10 and the second acceleration chamber 12. The pressure component 8 is used to inject coolant into the acceleration flow channel 14.

[0037] When the plastic fuel tank needs to be cooled during injection molding, the operator first immerses the plastic fuel tank in the coolant in the cooling chamber 7. Then, the electric telescopic rod 2 is extended through the operating table. As the electric telescopic rod 2 extends, the second cooling rack 11 contacts the plastic fuel tank, thus continuously immersing the plastic fuel tank in the coolant. At this time, the sealing plate 6 has sealed the cooling chamber 7. As the electric telescopic rod 2 continues to extend, the pressure component 8 starts to work, quickly squeezing the internal coolant into the acceleration channel 14, and then quickly entering the first acceleration chamber 10 and the second acceleration chamber 12 of the first cooling rack 9 and the second cooling rack 11. This pushes the water flow in the first acceleration chamber 10 and the second acceleration chamber 12. Through the design of the pressure component 8, the acceleration channel 14, the first acceleration chamber 10 and the second acceleration chamber 12, the flow speed of the cooling water inside the frame 1 can be increased, and the heat exchange efficiency of the cooling water when in contact with the plastic fuel tank can be improved, thereby improving the cooling effect of the plastic fuel tank.

[0038] It should be noted that the electric telescopic rod 2 is electrically connected to the frame 1, and the frame 1 has an operating panel for controlling the operation of the electric telescopic rod 2. The operating panel here is a foot pedal button.

[0039] The first cooling rack 9 and the second cooling rack 11 are made of copper, which is a material with good thermal conductivity. The coolant is ethylene glycol coolant, which contains good copper corrosion inhibitors such as benzotriazole or toluenetriazole.

[0040] like Figure 2 , Figure 7 , Figure 8 and Figure 9 As shown, the first cooling rack 9 is used to place the plastic fuel tank. There is a gap between the upper side of the first cooling rack 9 and the inner wall of the cooling cavity 7. Each set of corner posts 13 has a rounded corner design. The upper part of the first cooling rack 9 is set in an arc arch. The lower part of the second cooling rack 11 is set in an arc arch. The second cooling rack 11 is a rectangular frame.

[0041] Since the entire plastic fuel tank is hollow after injection molding and is placed directly in the coolant, it will inevitably float in the coolant under water pressure. If the outer wall of the plastic fuel tank contacts the inner wall of the cooling chamber 7, the part of the plastic fuel tank that is in contact with the inner wall of the cooling chamber 7 will not be able to fully contact the coolant, which will lead to a slower cooling rate in that part. Under stress, cracks will appear on the surface of the plastic fuel tank after molding. Therefore, the first cooling rack 9 and the second cooling rack 11 are used to fix the plastic fuel tank and prevent it from swaying due to the buoyancy of the water flow when the pressure component 8 is working. This would prevent the plastic fuel tank from floating out of the forming frame, and the entire plastic fuel tank would not be able to fully contact the coolant, resulting in poor cooling effect and ensuring the production quality of the plastic fuel tank.

[0042] It should be noted that there is a gap between the upper sides of the first cooling rack 9 and the inner wall of the cooling chamber 7. Each set of corner posts 13 has rounded corners. The upper ends of the first cooling rack 9 and the lower ends of the second cooling rack 11 are also arched. This is to allow the first cooling rack 9, the second cooling rack 11 and the corner posts 13 to fit more closely to the thicker parts of the inner wall of the plastic fuel tank, ensuring the cooling effect. At the same time, it can also limit the plastic fuel tank, making it easier to put the plastic fuel tank into the cooling chamber 7.

[0043] like Figures 2 to 11As shown, there is a space between the cooling chamber 7 and the bottom of the first cooling rack 9. The central part of the first cooling rack 9 is a grid plate 15. Interconnected and crisscrossing cooling channels 16 are formed inside the grid plate 15. The cooling channels 16 are connected to the first acceleration chamber 10. Multiple sets of first nozzles 17 are formed at the bottom of the grid plate 15. Each set of first nozzles 17 is vertically downward and connected to the cooling channels 16. Multiple sets of second nozzles 18 are formed on the outer walls around the first cooling rack 9. Each set of second nozzles 18 is obliquely upward. One end of the hole 18 is connected to the first acceleration chamber 10, and the other end of each group of second nozzles 18 is connected to the gap between the first cooling rack 9 and the inner wall of the cooling chamber 7. Multiple groups of third nozzles 29 are opened on the inner wall of the second cooling rack 11, and multiple groups of fourth nozzles 30 are opened on the outer side of the bottom of the second cooling rack 11. Each group of fourth nozzles 30 is set obliquely downward. Each group of third nozzles 29 is connected to the gap between the first cooling rack 9 and the inner wall of the cooling chamber 7. Each group of third nozzles 29 and fourth nozzles 30 are connected to the second acceleration chamber 12.

[0044] The top of the cooling chamber 7 has a groove 32 that engages with the sealing plate 6. The sealing plate 6 engages with the groove 32, which allows the second acceleration chamber 12 to communicate with the acceleration channel 14.

[0045] When the pressure assembly 8 starts working and injects coolant into the acceleration channel 14, the coolant enters from the middle of the acceleration channel 14 and flows out from the upper and lower ends of the acceleration channel 14. The coolant flowing along the lower end of the acceleration channel 14 first enters the first acceleration chamber 10 and the second acceleration chamber 12 in the first cooling rack 9 and the second cooling rack 11. The part of the coolant that is pressurized in the first acceleration chamber 10 will be sprayed along the cooling channel 16 through the first nozzle 17 to the space below the first cooling rack 9, thereby disturbing the coolant below the plastic fuel tank and improving the heat exchange efficiency of the coolant at the bottom of the plastic fuel tank. The remaining part of the coolant that is pressurized in the first acceleration chamber 10 will be sprayed out through the second nozzle 18 and enter the gap between the side of the first cooling rack 9 and the inner wall of the cooling chamber 7, disturbing the coolant in this area and improving the heat exchange efficiency of the coolant.

[0046] Meanwhile, the coolant flowing along the upper end of the acceleration channel 14 will also quickly fill the second acceleration chamber 12 and be sprayed out through the third nozzle 29 and the fourth nozzle 30, thereby disturbing the coolant on the side and top of the plastic fuel tank and improving the heat exchange efficiency of the coolant on the side and top of the plastic fuel tank.

[0047] It should be noted that the bottom of the piston chamber 21 is connected to the middle of the acceleration channel 14, and the first cooling rack 9 and the second cooling rack 11 are connected to the bottom and top of the acceleration channel 14, respectively.

[0048] like Figure 2 , Figure 3, Figure 8 , Figure 9 and Figure 12 As shown, the interior of the shaping frame body 3 is provided with sliding grooves 19 on all four sides. Each set of sliding grooves 19 extends upward to the exterior of the shaping frame body 3. The pressure assembly 8 includes sliding rods 20 that are slidably disposed in each set of sliding grooves 19. The top of the sliding rods 20 extends upward to the exterior of the shaping frame body 3. Piston chambers 21 are provided inside the interior of the shaping frame body 3 on all four sides. Each set of piston chambers 21 is connected to the sliding grooves 19. A piston body 22 is slidably and sealed at the top of the piston chamber 21. The piston body 22 is fixedly connected to the sliding rods 20. The piston chamber 21 is connected to the acceleration channel 14.

[0049] The length of the first thrust spring 5 in the relaxed state is the same as the length of the portion of the slide bar 20 that extends to the outside of the main body 3 of the shaping frame.

[0050] A tension spring 23 is provided in the slide groove 19. The tension spring 23 is sleeved on the outer surface of the slide rod 20. The top end of the tension spring 23 is fixedly connected to the top end of the inner wall of the slide groove 19, and the bottom end of the tension spring 23 is fixedly connected to the piston body 22.

[0051] When the electric telescopic rod 2 extends and the sealing plate 6 is stuck in the groove 32, the pressure plate 4 contacts the top of the multiple sliding rods 20. Then the electric telescopic rod 2 continues to move down, the pressure plate 4 presses down the sliding rods 20, the tension spring 23 stretches, and the sliding rod 20 moves down in the piston chamber 21 with the piston body 22. The first thrust spring 5 contracts, and the piston body 22 squeezes the coolant in the piston chamber 21 into the acceleration channel 14, disturbing the coolant inside the cooling chamber 7.

[0052] Subsequently, the electric telescopic rod 2 continues to move upward, taking the pressure plate 4 with it. The first thrust spring 5 retracts and the tension spring 23 contracts, carrying the piston body 22 upward in the piston chamber 21 via the slide rod 20. This allows the coolant in the cooling chamber 7 to be drawn into the piston chamber 21 through the acceleration channel 14. During this process, the coolant located at the bottom and sides of the plastic fuel tank enters the first acceleration chamber 10 through the first nozzle 17 and the second nozzle 18, and then enters the acceleration channel 14. At the same time, the coolant located at the top and sides of the plastic fuel tank enters the second acceleration chamber 12 through the third nozzle 29 and the fourth nozzle 30, and then enters the acceleration channel 14. During this process, the pressure component 8 can still agitate the coolant inside the cooling chamber 7, improving cooling efficiency.

[0053] After the sealing plate 6 seals the cooling chamber 7, the electric telescopic rod 2 moves up and down repeatedly through the electric telescopic rod 2 and the pressure component 8, which repeatedly sucks and sprays the coolant in the cooling chamber 7, increasing the disorder of the coolant inside the cooling chamber 7, further disturbing the coolant in the cooling chamber 7, and improving the cooling efficiency.

[0054] It should be noted that the elastic force of the first thrust spring 5 is greater than the frictional force between the sealing plate 6 and the inner wall of the groove 32, in order to ensure that the first thrust spring 5 can still work after the sealing plate 6 and the groove 32 are engaged.

[0055] When the piston body 22 is located at the top of the piston chamber 21, both the piston chamber 21 and the acceleration channel 14 are filled with coolant, and the size of the piston chamber 21 is larger than the size of the acceleration channel 14.

[0056] like Figure 2 , Figure 3 , Figure 8 , Figure 9 and Figure 12 As shown, the sealing plate 6 is slidably sealed in the cooling chamber 7. The two side walls of the sealing plate 6 are provided with first slots 24, and the inner walls of the two sides of the cooling chamber 7 are provided with second slots 25. The inner wall of the cooling chamber 7 is also provided with a round hole 26. A handle 27 is slidably disposed in the round hole 26. The round hole 26 communicates with the second slot 25. A locking block 28 is slidably disposed in the second slot 25. The locking block 28 engages with the first slot 24. The locking block 28 is fixedly connected to the handle 27. The end of the handle 27 away from the locking block 28 extends to the outside of the shaping frame body 3. A second thrust spring 31 is disposed in the second slot 25. The second thrust spring 31 is sleeved on the outer surface of the handle 27. One end of the second thrust spring 31 is fixedly connected to the inner wall of the second slot 25, and the other end of the second thrust spring 31 is fixedly connected to the locking block 28.

[0057] When using lever 27, the plastic fuel tank should be placed inside the cooling chamber 7. When the electric telescopic lever 2 is activated and lowered, the operator should hold lever 27 with both hands to keep the two sets of levers 27 apart. Once the sealing plate 6 is engaged in the groove 32, the operator should release lever 27, allowing the two sets of levers 27 to move closer together under the action of the second thrust spring 31 and engage in the first slot 24, thus fixing the sealing plate 6. When the pressure assembly 8 injects coolant into the cooling chamber 7 to pressurize it, the pressurized coolant can then perform pressure testing on the surface of the plastic fuel tank to detect whether there are cracks on the surface of the plastic fuel tank that could cause leakage. Simultaneously, it can also be used for cooling... Pigment is added to the liquid. After the plastic fuel tank has cooled down, the plastic fuel tank is removed from the cooling chamber 7 and the coolant on its surface is wiped off. If there are cracks on the surface of the plastic fuel tank, the coolant containing pigment will remain in the cracks as a mark to indicate that the plastic fuel tank is a defective product. By adding pigment to the coolant through the pressure component 8, the quality of the molded plastic fuel tank can be inspected. The plastic fuel tank is removed from the cooling chamber 7 and the coolant on the surface of the molded plastic fuel tank is wiped off. It is possible to detect whether there are cracks with pigment on its surface to judge the quality of the plastic fuel tank. The pigment in the cracks can also mark the defective plastic fuel tank.

[0058] It should be noted that when the plastic fuel tank is placed in the coolant, the coolant level in the cooling chamber 7 is the same as the bottom horizontal position of the sealing plate 6.

[0059] Usage: When the plastic fuel tank needs to be cooled during injection molding, the operator first immerses the plastic fuel tank in the coolant in the cooling chamber 7. Then, the electric telescopic rod 2 is extended via the operating table. As the electric telescopic rod 2 extends, the second cooling rack 11 contacts the plastic fuel tank, thus continuously immersing the plastic fuel tank in the coolant. At this time, the sealing plate 6 has sealed the cooling chamber 7. As the electric telescopic rod 2 continues to extend, the pressure component 8 starts to work, quickly squeezing the internal coolant into the acceleration channel 14, and then quickly entering the first acceleration chamber 10 and the second acceleration chamber 12 of the first cooling rack 9 and the second cooling rack 11. This promotes the flow of water in the first acceleration chamber 10 and the second acceleration chamber 12. Through the design of the pressure component 8, the acceleration channel 14, the first acceleration chamber 10 and the second acceleration chamber 12, the flow rate of the cooling water inside the frame 1 can be increased, improving the heat exchange efficiency of the cooling water when in contact with the plastic fuel tank, thereby improving the cooling effect of the plastic fuel tank.

[0060] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A water-cooled shaping frame for a plastic fuel tank, comprising a frame (1), wherein an electric telescopic rod (2) is fixedly installed on the inner top wall of the frame (1), and a shaping frame body (3) is fixedly installed on the frame (1), wherein a pressure plate (4) is fixedly connected to the telescopic end of the electric telescopic rod (2), and multiple sets of first thrust springs (5) are fixedly connected to the bottom of the pressure plate (4), wherein the bottom of each set of first thrust springs (5) is fixedly connected to the same sealing plate (6), characterized in that: The shaping frame body (3) has a cooling chamber (7) inside, and the cooling chamber (7) is filled with coolant. The shaping frame body (3) is also filled with a pressure assembly (8). The cooling chamber (7) is fixedly installed with a first cooling rack (9). The first cooling rack (9) has interconnected first acceleration chambers (10) around its perimeter. The cooling chamber (7) is also slidably sealed with a second cooling rack (11). The second cooling rack (11) has interconnected second acceleration chambers (12) around its perimeter. Corner posts (13) are fixedly installed at the four corners of the cooling chamber (7). The corner posts (13) have acceleration channels (14) inside their interiors that communicate with the first acceleration chamber (10) and the second acceleration chamber (12). The pressure assembly (8) is used to inject coolant into the acceleration channels (14). The shaping frame body (3) has grooves (19) on all four sides of its interior. Each set of grooves (19) extends upward to the outside of the shaping frame body (3). The pressure assembly (8) includes a slide rod (20) that is slidably disposed in each set of grooves (19). The top of the slide rod (20) extends upward to the outside of the shaping frame body (3). The shaping frame body (3) has piston chambers (21) on all four sides of its interior. Each set of piston chambers (21) is connected to the grooves (19). The top of the piston chamber (21) is slidably sealed with a piston body (22). The piston body (22) is fixedly connected to the slide rod (20). The piston chamber (21) is connected to the acceleration channel (14). A tension spring (23) is provided in the slide groove (19). The tension spring (23) is sleeved on the outer surface of the slide rod (20). The top end of the tension spring (23) is fixedly connected to the top end of the inner wall of the slide groove (19). The bottom end of the tension spring (23) is fixedly connected to the piston body (22).

2. The water-cooled shaping frame for a plastic fuel tank according to claim 1, characterized in that: The first cooling rack (9) is used to place the plastic fuel tank. There is a gap between the upper side of the first cooling rack (9) and the inner wall of the cooling cavity (7). Each set of corner posts (13) has a rounded corner design. The upper part of the first cooling rack (9) is arched. The lower part of the second cooling rack (11) is arched. The second cooling rack (11) is a rectangular frame.

3. The water-cooled shaping frame for a plastic fuel tank according to claim 2, characterized in that: There is a space between the cooling chamber (7) and the bottom of the first cooling rack (9). The central part of the first cooling rack (9) is a grid plate (15). The grid plate (15) has interconnected and crisscrossing cooling channels (16) inside. The cooling channels (16) are connected to the first acceleration chamber (10). The bottom of the grid plate (15) has multiple sets of first nozzles (17). Each set of first nozzles (17) is vertically downward and connected to the cooling channels (16). The outer wall around the first cooling rack (9) has multiple sets of second nozzles (18).

4. The water-cooled shaping frame for a plastic fuel tank according to claim 3, characterized in that: The sealing plate (6) is slidably sealed in the cooling chamber (7). The two side walls of the sealing plate (6) are provided with first slots (24). The inner walls of the two sides of the cooling chamber (7) are provided with second slots (25). The inner wall of the cooling chamber (7) is also provided with a round hole (26). A handle (27) is slidably disposed in the round hole (26). The round hole (26) is connected to the second slot (25). A locking block (28) is slidably disposed in the second slot (25).

5. A water-cooled shaping frame for a plastic fuel tank according to claim 4, characterized in that: Each group of second nozzles (18) is arranged obliquely upward. One end of each group of second nozzles (18) is connected to the first acceleration chamber (10). The other end of each group of second nozzles (18) is connected to the gap between the first cooling rack (9) and the inner wall of the cooling chamber (7). The inner wall of the second cooling rack (11) is provided with multiple groups of third nozzles (29). The outer side of the bottom of the second cooling rack (11) is provided with multiple groups of fourth nozzles (30). Each group of fourth nozzles (30) is arranged obliquely downward. Each group of third nozzles (29) is connected to the gap between the first cooling rack (9) and the inner wall of the cooling chamber (7). Each group of third nozzles (29) and fourth nozzles (30) are connected to the second acceleration chamber (12).

6. The water-cooled shaping frame for a plastic fuel tank according to claim 5, characterized in that: The locking block (28) engages with the first locking groove (24), the locking block (28) is fixedly connected to the handle (27), and the end of the handle (27) away from the locking block (28) extends to the outside of the shaping frame body (3). A second thrust spring (31) is provided in the second locking groove (25). The second thrust spring (31) is sleeved on the outer surface of the handle (27). One end of the second thrust spring (31) is fixedly connected to the inner wall of the second locking groove (25), and the other end of the second thrust spring (31) is fixedly connected to the locking block (28).

7. The water-cooled shaping frame for a plastic fuel tank according to claim 6, characterized in that: The length of the first thrust spring (5) in the relaxed state is the same as the length of the portion of the slide bar (20) extending to the outside of the frame body (3).

8. A water-cooled shaping frame for a plastic fuel tank according to claim 7, characterized in that: The top of the cooling chamber (7) is provided with a groove (32) that engages with the sealing plate (6). The sealing plate (6) engaging in the groove (32) enables the second acceleration chamber (12) to communicate with the acceleration channel (14).

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