Water-cooling shaping frame for plastic fuel tank

Abstract

The invention discloses a plastic fuel tank water-cooling shaping frame, which belongs to the field of fuel tank production, and comprises a rack, an electric telescopic rod is fixedly mounted on the inner top wall of the rack, a plurality of groups of first thrust springs are fixedly connected to the bottom of a pressing plate, the bottoms of each group of first thrust springs are fixedly connected with the same sealing plate, and a cooling cavity is formed in a shaping frame main body; cooling liquid is arranged in the cooling cavity, a pressure assembly is arranged in the shaping frame body, and the pressure assembly is used for injecting the cooling liquid into the acceleration flow channel. Through the design of the pressure assembly, the acceleration flow channel, the first acceleration cavity and the second acceleration cavity, the pressure assembly works, so that the cooling liquid flows in the acceleration flow channel, the cooling liquid enters the rack after being accelerated through the first acceleration cavity and the second acceleration cavity, the flowing speed of the cooling liquid in the rack can be increased, and the cooling effect is improved. And the heat exchange efficiency of cooling water in contact with the plastic fuel tank is improved, so that the cooling effect of the plastic fuel tank is improved.

Description

Technical Field

[0001] The present invention relates to the field of fuel tank production, and more specifically, to a water-cooling shaping frame for plastic fuel tanks. Background Art

[0002] A fuel tank is a container for storing fuel in a vehicle or equipment. When manufacturing a fuel tank, multiple factors need to be considered to ensure safe and reliable storage and supply of fuel. In recent years, plastic fuel tanks have become increasingly popular due to their advantages such as light weight, corrosion resistance, and low cost, especially fuel tanks made of high-density polyethylene and polypropylene.

[0003] The manufacturing process of plastic fuel tanks is usually injection molding. Although the molten plastic has started to cool during the injection molding process, it is still in a high-temperature state and needs further cooling to reach room temperature and solidify the plastic fuel tank. Therefore, in the prior art, the formed plastic fuel tank is usually placed in a water tank filled with coolant to achieve the purpose of cooling the plastic fuel tank. The water tanks filled with coolant in existing workshops are relatively large, so as to cool a large number of plastic fuel tanks at one time. However, in this cooling method, since the coolant is not flowing, the temperature of the coolant cannot be exchanged in time when cooling the plastic fuel tank, resulting in too high local temperature of the coolant, which reduces the cooling efficiency of the coolant for the plastic fuel tank. For this reason, a water-cooling shaping frame for plastic fuel tanks is proposed. Summary of the Invention

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a water-cooling shaping frame for plastic fuel tanks.

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

[0006] A water-cooling shaping frame for plastic fuel tanks, including a frame. An electric telescopic rod is fixedly installed on the inner top wall of the frame. A shaping frame body is fixedly installed on the frame. The telescopic end of the electric telescopic rod is fixedly connected to a pressing plate. Multiple groups of first thrust springs are fixedly connected to the bottom of the pressing plate. The bottom of each group of first thrust springs is fixedly connected to the same sealing plate. A cooling cavity is formed inside the shaping frame body, and a coolant is arranged inside the cooling cavity. A pressure component is arranged inside the shaping frame body. A first cooling frame is fixedly installed on the inner wall of the cooling cavity. A first acceleration cavity that communicates with each other is formed inside the first cooling frame around its perimeter. A second cooling frame is also slidably and sealingly arranged on the inner wall of the cooling cavity. A second acceleration cavity that communicates with each other is formed inside the second cooling frame around its perimeter. Angle columns are fixedly arranged at the four corners of the inner wall of the cooling cavity. An acceleration flow channel that communicates with the first acceleration cavity and the second acceleration cavity is formed inside the angle columns. The pressure component is used to inject the coolant into the acceleration flow channel.

[0007] Further, the first cooling rack is used for placing a plastic fuel tank. There is a gap between the upper sides of the four peripheries of the first cooling rack and the inner wall of the cooling cavity. Each group of corner columns has a rounded corner design. The upper ends of the four peripheries of the first cooling rack are arched upward. The lower ends of the four peripheries of the second cooling rack are arched upward. The second cooling rack is a rectangular frame.

[0008] Further, there is a space between the bottom of the cooling cavity and the first cooling rack. The central part of the first cooling rack is a grid plate. Cooling channels that communicate with each other and crisscross are arranged inside the grid plate. The cooling channels are communicated with the first acceleration cavity. A plurality of groups of first spray holes are arranged at the bottom of the grid plate. Each group of first spray holes is vertically downward and communicated with the cooling channels. A plurality of groups of second spray holes are arranged on the outer walls of the four peripheries of the first cooling rack.

[0009] Further, chutes are arranged inside the four peripheries of the shaping rack main body. Each group of chutes extends upward to the outside of the shaping rack main body. The pressure assembly includes sliding rods respectively arranged in each group of chutes. The top ends of the sliding rods extend upward to the outside of the shaping rack main body. Piston cavities are arranged inside the four peripheries of the shaping rack main body. Each group of piston cavities is communicated with the chutes respectively. A piston main body is slidably and sealingly arranged at the top end of each piston cavity. The piston main body is fixedly connected with the sliding rod. The piston cavity is communicated with the acceleration flow channel.

[0010] Further, a tension spring is arranged in the chute. The tension spring is sleeved on the outer surface of the sliding rod. The top end of the tension spring is fixedly connected with the top end inner wall of the chute. The bottom end of the tension spring is fixedly connected with the piston main body.

[0011] Further, the sealing plate is slidably and sealingly arranged in the cooling cavity. First clamping grooves are arranged on both side walls of the sealing plate. Second clamping grooves are respectively arranged on the inner walls of both sides of the cooling cavity. A round hole is further arranged on the inner wall of the cooling cavity. A hand rod is slidably arranged in the round hole. The round hole is communicated with the second clamping groove. A clamping block is slidably arranged in the second clamping groove.

[0012] Further, each group of second spray holes is arranged obliquely upward. One end of each group of second spray holes is communicated with the first acceleration cavity. The other end of each group of second spray holes is communicated with the gap existing between the first cooling rack and the inner wall of the cooling cavity. A plurality of groups of third spray holes are arranged on the inner wall of the second cooling rack. A plurality of groups of fourth spray holes are arranged on the outer side of the bottom of the second cooling rack. Each group of fourth spray holes is arranged obliquely downward. Each group of third spray holes is communicated with the gap existing between the first cooling rack and the inner wall of the cooling cavity. Each group of third spray holes and fourth spray holes are both communicated with the second acceleration cavity.

[0013] Further, the clamping block is clamped and matched with the first clamping groove. The clamping block is fixedly connected to the hand lever. One end of the hand lever away from the clamping block extends to the outside of the main body of the shaping frame. A second thrust spring is arranged in the second clamping groove. The second thrust spring is sleeved on the outer surface of the hand lever. One end of the second thrust spring is fixedly connected to the inner wall of the second clamping groove, and the other end of the second thrust spring is fixedly connected to the clamping block.

[0014] Further, the length of the first thrust spring in the relaxed state is the same as the length of the part of the sliding rod extending to the outside of the main body of the shaping frame.

[0015] Further, a groove for clamping the sealing plate is formed at the top of the cooling cavity. When the sealing plate is clamped in the groove, the second acceleration cavity can be communicated with the acceleration flow channel.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) In this application, through the design of the pressure component, the acceleration flow channel, the first acceleration cavity and the second acceleration cavity, when the pressure component works, the coolant flows in the acceleration flow channel, and after being accelerated by the first acceleration cavity and the second acceleration cavity, the coolant enters the inside of the frame, which can increase the flow rate of the cooling water inside the frame and improve the heat exchange efficiency when the cooling water contacts the plastic fuel tank, thereby improving the cooling effect of the plastic fuel tank; (2) In this application, through the design of the pressure component, the first cooling rack and the second cooling rack, when the pressure component works to inject the coolant into the acceleration flow channel, the coolant will be divided into two parts in the acceleration flow channel and enter the first acceleration cavity and the second acceleration cavity respectively. Also, through the design of the first spray hole, the second spray hole, the third spray hole, the fourth spray hole and the cooling flow channel, the coolant in the entire cooling cavity can be effectively disturbed, and the heat exchange efficiency of the coolant inside the entire cooling cavity can be accelerated, thereby further improving the cooling efficiency of the entire plastic fuel tank; (3) In this application, through the design of the electric telescopic rod and the pressure component, when the sealing plate seals the cooling cavity, the electric telescopic rod moves up and down repeatedly, and the pressure component sucks and sprays the coolant in the cooling cavity repeatedly, increasing the chaos degree of the coolant inside the cooling cavity, further disturbing the coolant in the cooling cavity, and further improving the cooling efficiency; (4) In this application, by setting the pressure component and adding pigments to the coolant, the quality of the molded plastic fuel tank can be detected. Take out the plastic fuel tank in the cooling cavity and wipe off the coolant on the surface of the molded plastic fuel tank, and it can be detected whether there are cracks with pigments on its surface to judge the quality of the plastic fuel tank. The pigments in the cracks can also mark the defective plastic fuel tanks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall front structural schematic diagram of the present invention; Figure 2 Front elevation sectional view of the overall structure of the present invention; Figure 3 Schematic diagram of the structure pressing plate, first thrust spring and sealing plate of the present invention; Figure 4 Top view of the first cooling rack of the structure of the present invention; Figure 5 Bottom view of the first cooling rack of the structure of the present invention; Figure 6 Sectional top view of the first cooling rack of the structure of the present invention; Figure 7 Internal partial structure sectional view of the shaping rack main body of the present invention; Figure 8 Front elevation sectional view of the internal structure of the shaping rack main body of the present invention; Figure 9 Side elevation sectional view of the internal structure of the shaping rack main body of the present invention; Figure 10 Exploded sectional view of the second cooling rack of the structure of the present invention; Figure 11 Front elevation sectional view of the second cooling rack of the structure of the present invention; Figure 12 Of the present invention Figure 2 Front enlarged view of the structure at position A in

[0018] Description of the reference numerals in the figure: 1. Frame; 2. Electric telescopic rod; 3. Shaping rack main body; 4. Pressing plate; 5. First thrust spring; 6. Sealing plate; 7. Cooling cavity; 8. Pressure assembly; 9. First cooling rack; 10. First acceleration cavity; 11. Second cooling rack; 12. Second acceleration cavity; 13. Corner post; 14. Acceleration flow channel; 15. Grid plate; 16. Cooling flow channel; 17. First spray hole; 18. Second spray hole; 19. Slide groove; 20. Slide bar; 21. Piston cavity; 22. Piston main body; 23. Tension spring; 24. First card slot; 25. Second card slot; 26. Round hole; 27. Hand rod; 28. Block; 29. Third spray hole; 30. Fourth spray hole; 31. Second thrust spring; 32. Groove. Detailed implementation manners

[0019] 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; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1 to 12, a plastic fuel tank water-cooling shaping frame, comprising a frame 1. An electric telescopic rod 2 is fixedly installed on the inner top wall of the frame 1. A shaping frame main body 3 is fixedly installed on the frame 1. The telescopic end of the electric telescopic rod 2 is fixedly connected to a pressing plate 4. A plurality of groups of first thrust springs 5 are fixedly connected to the bottom of the pressing plate 4. The bottom of each group of first thrust springs 5 is fixedly connected to the same sealing plate 6. A cooling cavity 7 is formed inside the shaping frame main body 3, and a coolant is arranged inside the cooling cavity 7. A pressure assembly 8 is arranged inside the shaping frame main body 3. A first cooling frame 9 is fixedly installed on the inner wall of the cooling cavity 7. A first acceleration cavity 10 communicating with each other is formed inside the first cooling frame 9 around. A second cooling frame 11 is also slidably and sealingly arranged on the inner wall of the cooling cavity 7. A second acceleration cavity 12 communicating with each other is formed inside the second cooling frame 11 around. Angle columns 13 are fixedly arranged at the four corners of the inner wall of the cooling cavity 7. An acceleration flow channel 14 communicating with the first acceleration cavity 10 and the second acceleration cavity 12 is formed inside the angle columns 13. The pressure assembly 8 is used to inject the coolant into the acceleration flow channel 14.

[0021] When the plastic fuel tank needs to be cooled during injection molding, first, the operator immerses the plastic fuel tank in the coolant in the cooling cavity 7. Subsequently, the electric telescopic rod 2 is extended through the operation console. As the electric telescopic rod 2 extends, the second cooling frame 11 contacts the plastic fuel tank and continuously submerges the plastic fuel tank in the coolant. At this time, the sealing plate 6 has sealed the cooling cavity 7. As the electric telescopic rod 2 continues to extend, the pressure assembly 8 starts to work, quickly squeezing the internal coolant into the acceleration flow channel 14 and quickly entering the first acceleration cavity 10 and the second acceleration cavity 12 of the first cooling frame 9 and the second cooling frame 11, thereby promoting the flow of the water in the first acceleration cavity 10 and the second acceleration cavity 12. Through the design of the pressure assembly 8, the acceleration flow channel 14, the first acceleration cavity 10, and the second acceleration cavity 12, the flow rate of the cooling water inside the frame 1 can be increased, and the heat exchange efficiency when the cooling water contacts the plastic fuel tank can be improved, thereby improving the cooling effect of the plastic fuel tank; It should be particularly noted here that: the electric telescopic rod 2 is electrically connected to the frame 1, and there is an operation console on the frame 1 for controlling the operation of the electric telescopic rod 2. The operation console here is a foot-operated button; The first cooling frame 9 and the second cooling frame 11 are made of copper, which is a material with good thermal conductivity. The coolant is ethylene glycol coolant, and good copper corrosion inhibitors such as benzotriazole or tolyltriazole are added.

[0022] Such as Figure 2 , Figure 7 , Figure 8 and Figure 9As shown in the figure, the first cooling rack 9 is used to place the plastic fuel tank. There is a gap between the upper sides of the four - week of the first cooling rack 9 and the inner wall of the cooling cavity 7. Each group of corner columns 13 has a rounded - corner design. The upper ends of the four - week of the first cooling rack 9 are arched in an arc shape. The lower ends of the four - week of the second cooling rack 11 are arched in an arc shape. The second cooling rack 11 is a rectangular frame.

[0023] Since the interior of the entire plastic fuel tank is empty after injection molding and it is directly placed in the coolant, it will inevitably float in the coolant under the action of water pressure. If the outer wall of the plastic fuel tank contacts the inner wall of the cooling cavity 7, the part of the plastic fuel tank that fits the inner wall of the cooling cavity 7 will not be able to fully contact the coolant, resulting in a slower cooling rate for this part. Under the action of stress, cracks will appear on the surface of the plastic fuel tank after molding. Therefore, at this time, the first cooling rack 9 and the second cooling rack 11 are used to fix the plastic fuel tank, preventing the plastic fuel tank from floating due to the buoyancy of the water flow and drifting out of the shaping rack during the operation of the pressure component 8, ensuring that the plastic fuel tank can fully contact the coolant as a whole, and avoiding the problem of poor cooling effect of the plastic fuel tank, thus guaranteeing the production quality of the plastic fuel tank. It should be particularly noted here that there is a gap between the upper sides of the four - week of the first cooling rack 9 and the inner wall of the cooling cavity 7. Each group of corner columns 13 has a rounded - corner design. The upper ends of the four - week of the first cooling rack 9 are arched in an arc shape. The lower ends of the four - week of the second cooling rack 11 are arched in an arc shape, so that the first cooling rack 9, the second cooling rack 11 and the corner columns 13 can better fit the thicker positions of the inner wall of the plastic fuel tank, ensuring the cooling effect, and at the same time, the plastic fuel tank can be limited, which is convenient for putting the plastic fuel tank into the cooling cavity 7.

[0024] As Figures 2 to 11 As shown in the figure, there is a space between the bottom of the cooling cavity 7 and the first cooling rack 9. The central part of the first cooling rack 9 is a grid plate 15. The cooling channels 16 that communicate with each other and criss - cross are arranged inside the grid plate 15. The cooling channels 16 are connected to the first acceleration cavity 10. A plurality of groups of first spray holes 17 are arranged at the bottom of the grid plate 15. Each group of first spray holes 17 is perpendicular downward and communicates with the cooling channels 16. A plurality of groups of second spray holes 18 are arranged on the outer wall of the four - week of the first cooling rack 9. Each group of second spray holes 18 is arranged obliquely upward. One end of each group of second spray holes 18 is connected to the first acceleration cavity 10, and the other end of each group of second spray holes 18 is connected to the gap between the first cooling rack 9 and the inner wall of the cooling cavity 7. A plurality of groups of third spray holes 29 are arranged on the inner wall of the second cooling rack 11. A plurality of groups of fourth spray holes 30 are arranged on the outer side of the bottom of the second cooling rack 11. Each group of fourth spray holes 30 is arranged obliquely downward. Each group of third spray holes 29 is connected to the gap between the first cooling rack 9 and the inner wall of the cooling cavity 7. Each group of third spray holes 29 and fourth spray holes 30 are both connected to the second acceleration cavity 12.

[0025] A groove 32 engaged with the sealing plate 6 is provided at the top of the cooling cavity 7. The engagement of the sealing plate 6 in the groove 32 can connect the second acceleration cavity 12 with the acceleration flow channel 14.

[0026] When the pressure assembly 8 starts to work and injects the coolant into the acceleration flow channel 14, at this time, the coolant enters from the middle of the acceleration flow channel 14 and flows out towards the upper and lower ends of the acceleration flow channel 14. First, the coolant flowing along the lower end of the acceleration flow channel 14 will enter the first acceleration cavity 10 and the second acceleration cavity 12 in the first cooling rack 9 and the second cooling rack 11. Part of the coolant pressurized in the first acceleration cavity 10 will be sprayed through the first spray hole 17 along the cooling flow channel 16 into 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 pressurized in the first acceleration cavity 10 will be sprayed out through the second spray hole 18 and enter the gap existing between the side of the first cooling rack 9 and the inner wall of the cooling cavity 7, disturbing the coolant in this area and improving the heat exchange efficiency of the coolant. At the same time, the coolant flowing along the upper end of the acceleration flow channel 14 will also quickly fill the second acceleration cavity 12 and be sprayed out through the third spray hole 29 and the fourth spray hole 30, thereby disturbing the coolant on the side and above the plastic fuel tank and improving the heat exchange efficiency of the coolant on the side and above the plastic fuel tank. It should be specifically noted here that: the bottom of the piston cavity 21 is communicated with the middle of the acceleration flow channel 14, and the first cooling rack 9 and the second cooling rack 11 are respectively communicated with the bottom and the top of the acceleration flow channel 14.

[0027] As Figure 2 、 Figure 3 、 Figure 8 、 Figure 9 and Figure 12 shown, sliding grooves 19 are provided inside the periphery of the shaping rack main body 3. Each group of sliding grooves 19 extends upwards to the outside of the shaping rack main body 3. The pressure assembly 8 includes sliding rods 20 respectively arranged in each group of sliding grooves 19. The top ends of the sliding rods 20 extend upwards to the outside of the shaping rack main body 3. Piston cavities 21 are provided inside the periphery of the shaping rack main body 3. Each group of piston cavities 21 is respectively communicated with the sliding grooves 19. A piston main body 22 is slidably and sealingly arranged at the top end of the piston cavity 21. The piston main body 22 is fixedly connected with the sliding rod 20. The piston cavity 21 is communicated with the acceleration flow channel 14.

[0028] The length of the first thrust spring 5 in the relaxed state is the same as the length of the part of the sliding rod 20 extending outside the shaping rack main body 3.

[0029] A tension spring 23 is arranged in the sliding groove 19. The tension spring 23 is sleeved on the outer surface of the sliding rod 20. The top end of the tension spring 23 is fixedly connected with the top end inner wall of the sliding groove 19. The bottom of the tension spring 23 is fixedly connected with the piston main body 22.

[0030] When the electric telescopic rod 2 extends and the sealing plate 6 is stuck in the groove 32, at this time, the pressing plate 4 contacts the tops of multiple groups of sliding rods 20. Subsequently, the electric telescopic rod 2 continues to move downward, the pressing plate 4 presses down the sliding rods 20, and the tension spring 23 is stretched. Furthermore, the sliding rods 20 drive the piston body 22 to move downward in the piston chamber 21, the first thrust spring 5 contracts, and the piston body 22 squeezes the coolant in the piston chamber 21 into the acceleration flow channel 14, disturbing the coolant inside the cooling chamber 7; Subsequently, the electric telescopic rod 2 continues to move upward. At this time, it drives the pressing plate 4 to move upward. The contracted first thrust spring 5 rebounds, and at the same time, the stretched tension spring 23 contracts. Through the sliding rods 20, it drives the piston body 22 to move upward in the piston chamber 21. Furthermore, through the acceleration flow channel 14, the coolant in the cooling chamber 7 is sucked into the piston chamber 21. During this process, the coolant located at the bottom and on both sides of the plastic fuel tank will enter the first acceleration chamber 10 together through the first spray holes 17 and the second spray holes 18, and enter the acceleration flow channel 14 through the first acceleration chamber 10. At the same time, the coolant located at the top and on both sides of the plastic fuel tank will enter the second acceleration chamber 12 together through the third spray holes 29 and the fourth spray holes 30, and enter the acceleration flow channel 14 through the second acceleration chamber 12. During this process, the pressure assembly 8 can still disturb the coolant inside the cooling chamber 7, improving the cooling efficiency; Through the electric telescopic rod 2 and the pressure assembly 8, after the sealing plate 6 seals the cooling chamber 7, the electric telescopic rod 2 moves up and down repeatedly, and through the pressure assembly 8, the coolant in the cooling chamber 7 is repeatedly sucked and ejected, increasing the chaos degree of the coolant inside the cooling chamber 7, further disturbing the coolant inside the cooling chamber 7, and improving the cooling efficiency; It should be particularly noted here that: the elastic force of the first thrust spring 5 is greater than the friction 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 is engaged with the groove 32; When the piston body 22 is located at the top of the piston chamber 21, both the piston chamber 21 and the acceleration flow channel 14 are filled with coolant, and the size of the piston chamber 21 is larger than that of the acceleration flow channel 14.

[0031] Such as Figure 2 、 Figure 3 、 Figure 8 、 Figure 9 and Figure 12As shown, the sealing plate 6 is slidably and sealingly arranged in the cooling cavity 7. First clamping grooves 24 are formed in both side walls of the sealing plate 6. Second clamping grooves 25 are respectively formed in the inner walls on both sides of the cooling cavity 7. A round hole 26 is further formed in the inner wall of the cooling cavity 7. A hand lever 27 is slidably arranged in the round hole 26. The round hole 26 communicates with the second clamping groove 25. A clamping block 28 is slidably arranged in the second clamping groove 25. The clamping block 28 is in clamping fit with the first clamping groove 24. The clamping block 28 is fixedly connected to the hand lever 27. One end of the hand lever 27 away from the clamping block 28 extends to the outside of the shaping frame body 3. A second thrust spring 31 is arranged in the second clamping groove 25. The second thrust spring 31 is sleeved on the outer surface of the hand lever 27. One end of the second thrust spring 31 is fixedly connected to the inner wall of the second clamping groove 25. The other end of the second thrust spring 31 is fixedly connected to the clamping block 28.

[0032] When using the hand lever 27, the plastic fuel tank should be placed inside the cooling cavity 7. When the electric telescopic rod 2 is started to move downward, the staff holds the two hand levers 27 with both hands and moves the two hand levers 27 away from each other. When the sealing plate 6 is engaged in the groove 32, the staff releases the hand levers 27, so that the two hand levers 27 approach each other under the action of the second thrust spring 31 and are clamped into the first clamping groove 24 to fix the sealing plate 6. When the pressure assembly 8 injects coolant into the cooling cavity 7 for pressurization, at this time, the pressurized coolant can perform a pressure test on the surface of the plastic fuel tank to detect whether there are cracks on the surface of the plastic fuel tank resulting in liquid leakage. At the same time, pigments can be added to the coolant. After the plastic fuel tank is cooled, the plastic fuel tank in the cooling cavity 7 is taken out and the coolant on its surface is wiped off. If there are cracks on the surface of the plastic fuel tank, at this time, the coolant containing pigments will remain in the cracks as a mark to remind that this plastic fuel tank is a defective product. By means of the pressure assembly 8 and adding pigments to the coolant, the quality of the formed plastic fuel tank can be detected. Taking out the plastic fuel tank in the cooling cavity 7 and wiping off the coolant on the surface of the formed plastic fuel tank can detect whether there are pigmented cracks on its surface to judge the quality of the plastic fuel tank. The pigments in the cracks can also mark the defective plastic fuel tanks; It should be particularly noted here that: after the plastic fuel tank is placed in the coolant, the liquid level of the coolant in the cooling cavity 7 is at the same horizontal position as the bottom of the sealing plate 6.

[0033] Usage method: When the plastic fuel tank needs to be cooled during injection molding, first, the operator immerses the plastic fuel tank in the coolant in the cooling chamber 7. Subsequently, the electric telescopic rod 2 is extended through the operating platform. As the electric telescopic rod 2 extends, the second cooling rack 11 contacts the plastic fuel tank and continuously submerges 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 assembly 8 starts to work, quickly squeezing the internal coolant into the acceleration flow channel 14 and 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, thereby promoting the flow of water in the first acceleration chamber 10 and the second acceleration chamber 12. Through the design of the pressure assembly 8, the acceleration flow 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, and the heat exchange efficiency when the cooling water contacts the plastic fuel tank can be improved, thereby improving the cooling effect of the plastic fuel tank.

[0034] The above is only the preferred specific implementation manner of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitutions or changes, and should be covered by the protection scope 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), a shaping frame main body (3) is fixedly installed on the frame (1), the telescopic end of the electric telescopic rod (2) is fixedly connected to a pressing plate (4), a plurality of groups of first thrust springs (5) are fixedly connected to the bottom of the pressing plate (4), and the bottom of each group of first thrust springs (5) is fixedly connected to the same sealing plate (6), characterized in that: A cooling cavity (7) is formed inside the shaping frame body (3), and a coolant is provided inside the cooling cavity (7). A pressure component (8) is arranged inside the shaping frame body (3). A first cooling frame (9) is fixedly installed on the inner wall of the cooling cavity (7). A first acceleration cavity (10) that communicates with each other is formed inside the periphery of the first cooling frame (9). A second cooling frame (11) is also slidably and sealingly arranged on the inner wall of the cooling cavity (7). A second acceleration cavity (12) that communicates with each other is formed inside the periphery of the second cooling frame (11). Corner columns (13) are fixedly arranged at the four corners of the inner wall of the cooling cavity (7). An acceleration flow channel (14) that communicates with the first acceleration cavity (10) and the second acceleration cavity (12) is formed inside the corner columns (13). The pressure component (8) is used to inject the coolant into the acceleration flow channel (14).

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

3. The water-cooled shaping frame for a plastic fuel tank according to claim 2, wherein: There is a space between the bottom of the cooling cavity (7) and the first cooling frame (9). The central part of the first cooling frame (9) is a grid plate (15). Cooling flow channels (16) that communicate with each other and are crisscrossed are formed inside the grid plate (15). The cooling flow channels (16) communicate with the first acceleration cavity (10). A plurality of groups of first spray holes (17) are formed at the bottom of the grid plate (15). Each group of the first spray holes (17) is vertically downward and communicates with the cooling flow channels (16). A plurality of groups of second spray holes (18) are formed on the outer wall of the periphery of the first cooling frame (9).

4. The water-cooled shaping rack for a plastic fuel tank according to claim 3, wherein: Chute grooves (19) are formed inside the four peripheries of the shaping frame body (3). Each group of the chute grooves (19) extends upward to the outside of the shaping frame body (3). The pressure component (8) includes sliding rods (20) that are respectively slidably arranged in each group of the chute grooves (19). The top ends of the sliding rods (20) extend upward to the outside of the shaping frame body (3). Piston cavities (21) are formed inside the four peripheries of the shaping frame body (3). Each group of the piston cavities (21) communicates with the chute grooves (19) respectively. A piston body (22) is slidably and sealingly arranged at the top end of each piston cavity (21). The piston body (22) is fixedly connected with the sliding rod (20). The piston cavity (21) communicates with the acceleration flow channel (14).

5. The water-cooled shaping rack for a plastic fuel tank according to claim 4, characterized in that: A tension spring (23) is arranged in the chute groove (19). The tension spring (23) is sleeved on the outer surface of the sliding rod (20). The top end of the tension spring (23) is fixedly connected with the top end of the inner wall of the chute groove (19). The bottom end of the tension spring (23) is fixedly connected with the piston body (22).

6. The water-cooled shaping frame for a plastic fuel tank according to claim 5, characterized in that: The sealing plate (6) is slidably and sealingly arranged in the cooling cavity (7). First clamping grooves (24) are formed in both side walls of the sealing plate (6). Second clamping grooves (25) are respectively formed in the inner walls on both sides of the cooling cavity (7). A round hole (26) is further formed in the inner wall of the cooling cavity (7). A hand rod (27) is slidably arranged in the round hole (26). The round hole (26) communicates with the second clamping groove (25). A clamping block (28) is slidably arranged in the second clamping groove (25).

7. A plastic fuel tank water-cooling shaping rack according to claim 6, characterized in that: Each group of the second spray holes (18) is arranged obliquely upward. One end of each group of the second spray holes (18) communicates with the first acceleration cavity (10). The other end of each group of the second spray holes (18) communicates with the gap existing between the first cooling rack (9) and the inner wall of the cooling cavity (7). A plurality of groups of third spray holes (29) are formed in the inner wall of the second cooling rack (11). A plurality of groups of fourth spray holes (30) are formed in the outer side of the bottom of the second cooling rack (11). Each group of the fourth spray holes (30) is arranged obliquely downward. Each group of the third spray holes (29) communicates with the gap existing between the first cooling rack (9) and the inner wall of the cooling cavity (7). Each group of the third spray holes (29) and the fourth spray holes (30) communicate with the second acceleration cavity (12).

8. A plastic fuel tank water-cooling shaping rack according to claim 7, characterized in that: The clamping block (28) is in clamping fit with the first clamping groove (24). The clamping block (28) is fixedly connected to the hand rod (27). One end of the hand rod (27) away from the clamping block (28) extends to the outside of the shaping rack main body (3). A second thrust spring (31) is arranged in the second clamping groove (25). The second thrust spring (31) is sleeved on the outer surface of the hand rod (27). One end of the second thrust spring (31) is fixedly connected to the inner wall of the second clamping groove (25). The other end of the second thrust spring (31) is fixedly connected to the clamping block (28).

9. A plastic fuel tank water-cooling shaping rack according to claim 8, characterized in that: The length of the first thrust spring (5) in the relaxed state is the same as the length of the part of the sliding rod (20) extending to the outside of the shaping rack main body (3).

10. A plastic fuel tank water-cooling shaping frame according to claim 9, characterized in that: A groove (32) for clamping the sealing plate (6) is formed at the top of the cooling cavity (7). When the sealing plate (6) is clamped in the groove (32), the second acceleration cavity (12) can be communicated with the acceleration flow channel (14).

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