Blow molding die for oil tank of excavator

Abstract

The utility model relates to the technical field of dies, and discloses an excavator oil tank blow molding die which comprises a base, a supporting frame is fixedly connected to the upper portion of the base, an air cylinder is fixedly connected to the interior of the upper side of the supporting frame, and the output end of the air cylinder is fixedly connected with an upper die. Telescopic rods are fixedly connected to the left side and the right side of the upper portion of the upper mold, one end of each telescopic rod is fixedly connected to the bottom of the upper side of the supporting frame, a water tank is fixedly connected to the upper portion of the base, a refrigerator is fixedly connected to the rear side of the outer wall of the water tank, and a cooling pipe is fixedly connected to the output end of the refrigerator. And the cooling pipe is fixedly connected to the interior of the water tank. According to the utility model, the oil tank subjected to blow molding is rapidly cooled and shaped, the dimensional stability and the structural strength of the oil tank are ensured, the production efficiency of the oil tank is improved, the accurate alignment and the firm connection of the upper mold and the lower mold are ensured, and the influence on the blow molding quality and the blow molding effect caused by the seepage of raw materials is prevented.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a blow molding mold for excavator fuel tanks. Background Technology

[0002] Excavator fuel tanks are an important component of excavators, typically used to store liquids such as hydraulic oil or fuel. During manufacturing, excavator fuel tanks must ensure structural strength, sealing, and durability. Blow molding is a common plastic molding process, particularly suitable for producing complex-shaped, lightweight, and high-strength containers, such as fuel tanks.

[0003] In the production of modern excavators, the fuel tank, as one of the core components, needs to have good structural strength, sealing, and durability. In order to ensure the quality of the fuel tank, traditional casting and injection molding methods have been gradually replaced by blow molding technology. Blow molding can better produce hollow parts with complex shapes, and has higher production efficiency and better surface quality. However, the cooling system of many molds cannot efficiently and evenly cool the inside and outside of the mold, resulting in uneven temperature in some areas of the fuel tank, which affects the quality of the final product. Therefore, a blow molding mold for excavator fuel tanks is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a blow molding mold for excavator oil tanks, aiming to improve the problem that the cooling systems of many existing molds cannot efficiently and evenly cool the inside and outside of the mold, resulting in uneven temperature in some oil tank areas and affecting the quality of the final product.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a blow molding mold for an excavator fuel tank, comprising a base, a support frame fixedly connected to the upper part of the base, a cylinder fixedly connected to the upper interior of the support frame, an upper mold fixedly connected to the output end of the cylinder, telescopic rods fixedly connected to the upper left and right sides of the upper mold, one end of the telescopic rods fixedly connected to the upper bottom of the support frame, a water tank fixedly connected to the upper part of the base, a cooler fixedly connected to the rear side of the outer wall of the water tank, a cooling pipe fixedly connected to the output end of the cooler, the cooling pipe fixedly connected to the interior of the water tank, a water pumping assembly fixedly connected to one side of the upper part of the base for conveying cooling water, a lower mold fixedly connected to the upper part of the water tank, cooling chambers being opened inside both the upper and lower molds, and a water inlet pipe fixedly connected to one side of the water tank.

[0006] As a further description of the above technical solution:

[0007] The upper mold has toothed rods fixedly connected to its four bottom corners. The lower mold has mounting holes at its four internal corners. The bottom of the mounting holes has through grooves. Two telescopic members are fixedly connected to both sides of the inner wall of the through grooves. A toothed plate is fixedly connected to one end of each telescopic member. A spring is sleeved on the outside of each telescopic member. The toothed rods are slidably connected inside the mounting holes and engaged inside the toothed plates.

[0008] As a further description of the above technical solution:

[0009] The pumping assembly includes a water pump, which is fixedly connected to the upper side of the base. The input end of the water pump is fixedly connected to a pumping pipe, and the output end of the water pump is fixedly connected to a water delivery pipe.

[0010] As a further description of the above technical solution:

[0011] One end of the water pumping pipe is fixedly connected to the inside of the water tank, and one end of the water delivery pipe is fixedly connected to the inside of the lower mold and communicates with the cooling chamber.

[0012] As a further description of the above technical solution:

[0013] The lower mold is fixedly connected to four corners of the upper part with connecting pipes. The connecting pipes are snapped into the four corners of the upper mold and are connected to the cooling cavity inside the upper mold.

[0014] As a further description of the above technical solution:

[0015] One end of the spring is fixedly connected to one side of the inner wall of the through groove, and the other end of the spring is fixedly connected to one side of the toothed plate.

[0016] As a further description of the above technical solution:

[0017] Both the toothed plate and the toothed rod are slidably connected inside the through groove.

[0018] As a further description of the above technical solution:

[0019] A material conveying pipe is fixedly connected to the upper inside of the upper mold, and an air inlet is fixedly connected to one side of both the upper and lower molds.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, when connecting the upper and lower molds, the connecting pipe is inserted into the upper mold to ensure that the cooling chambers of the upper and lower molds are connected. After blow molding is completed, the water in the cooler water tank is turned on, and then the water pump is turned on to transport the cooling water to the cooling chamber of the lower mold through the water supply pipe. The water is then sent into the cooling chamber of the upper mold through the connecting pipe, which realizes the rapid cooling and shaping of the blow-molded oil tank, ensuring the dimensional stability and structural strength of the oil tank, thereby improving the production efficiency of the oil tank.

[0022] 2. In this utility model, the upper mold is moved downward by starting the cylinder, and the telescopic rod ensures that the upper mold moves smoothly. The toothed rod is inserted into the mounting hole and enters the through groove, squeezing the toothed plate and the spring. After the toothed rod is fully inserted, the toothed plate is no longer squeezed, and the spring rebound force pushes the toothed plate back and locks it inside the toothed rod. This ensures the precise alignment and firm connection of the upper and lower molds, and prevents the raw material from seeping out and affecting the quality and effect of blow molding. Attached Figure Description

[0023] Figure 1 This is a front perspective view of a blow molding die for an excavator fuel tank proposed in this utility model;

[0024] Figure 2 This is a side perspective view of a blow molding die for an excavator fuel tank proposed in this utility model.

[0025] Figure 3 This is a schematic diagram of the refrigeration structure of a blow molding die for an excavator fuel tank proposed in this utility model;

[0026] Figure 4 This is a schematic diagram of the internal structure of the lower mold of a blow molding die for an excavator fuel tank proposed in this utility model.

[0027] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0028] Legend:

[0029] 1. Base; 2. Support frame; 3. Cylinder; 4. Feed pipe; 5. Telescopic rod; 6. Upper mold; 7. Toothed rod; 8. Lower mold; 9. Mounting hole; 10. Air inlet; 11. Water tank; 12. Refrigerator; 13. Cooling pipe; 14. Water pump; 15. Water suction pipe; 16. Water supply pipe; 17. Cooling chamber; 18. Through groove; 19. Telescopic component; 20. Spring; 21. Toothed plate; 22. Water inlet pipe; 23. Connecting pipe. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Reference Figure 2 , Figure 3 , Figure 4 An embodiment of this utility model provides a blow molding mold for an excavator fuel tank, including a base 1, a support frame 2 fixedly connected to the upper part of the base 1, a cylinder 3 fixedly connected to the upper side of the support frame 2, an upper mold 6 fixedly connected to the output end of the cylinder 3, telescopic rods 5 fixedly connected to the upper left and right sides of the upper part of the upper mold 6, one end of the telescopic rod 5 fixedly connected to the bottom of the upper side of the support frame 2, so that the upper mold 6 can be moved down to connect with the lower mold 8, and ensuring the stability during movement. A water tank 11 is fixedly connected to the upper part of the base 1, a cooler 12 is fixedly connected to the rear side of the outer wall of the water tank 11, a cooling pipe 13 is fixedly connected to the output end of the cooler 12, and the cooling pipe 13 is fixedly connected to the inside of the water tank 11. A water pumping assembly is fixedly connected to one side of the upper part of the base 1 for transporting cooling water. A lower mold 8 is fixedly connected to the upper part of the water tank 11. Cooling chambers 17 are opened inside both the upper mold 6 and the lower mold 8. A water inlet pipe 22 is fixedly connected to one side of the water tank 11.

[0032] The water pumping assembly includes a water pump 14, which is fixedly connected to the upper side of the base 1. The input end of the water pump 14 is fixedly connected to a water pumping pipe 15, and the output end of the water pump 14 is fixedly connected to a water delivery pipe 16. One end of the water pumping pipe 15 is fixedly connected to the inside of the water tank 11, and one end of the water delivery pipe 16 is fixedly connected to the inside of the lower mold 8 and communicates with the cooling cavity 17. Connecting pipes 23 are fixedly connected to the four corners of the upper part of the lower mold 8. The connecting pipes 23 are engaged with the four corners of the inside of the upper mold 6 and communicate with the cooling cavity 17 inside the upper mold 6.

[0033] By connecting the upper mold 6 and the lower mold 8 simultaneously, the connecting pipe 23 is inserted into the interior of the upper mold 6 to ensure that the cooling chambers 17 in the upper mold 6 and the lower mold 8 are connected. This ensures that cooling water can smoothly enter the interior of the upper mold 6 to quickly cool the blow-molded oil tank. After blow molding is completed, the cooler 12 is started to cool the water in the water tank 11 through the cooling pipe 13, ensuring that the water temperature in the water tank 11 is at the required low temperature, so that it can be effectively and quickly cooled. Then, the water pump 14 is started to draw the cooled water through the water pumping pipe 15, and then input it into the cooling chamber 17 in the lower mold 8 through the water supply pipe 16. Finally, the cooling water is sent into the cooling chamber 17 in the upper mold 6 through the connecting pipe 23 to cool the blow-molded oil tank. This achieves rapid cooling and shaping of the blow-molded oil tank, ensuring the dimensional stability and structural strength of the oil tank, and improving the production efficiency of the oil tank.

[0034] Reference Figure 1 , Figure 4 , Figure 5 The upper mold 6 has toothed rods 7 fixedly connected to the four corners of its bottom. The lower mold 8 has mounting holes 9 at the four corners of its interior. The mounting holes 9 have through grooves 18 at the bottom. The inner walls of the through grooves 18 are fixedly connected to two telescopic members 19. The telescopic members 19 are fixedly connected to a toothed plate 21 at their closest ends. The telescopic members 19 are fitted with springs 20. The toothed rods 7 are slidably connected inside the mounting holes 9 and are engaged inside the toothed plate 21.

[0035] One end of the spring 20 is fixedly connected to one side of the inner wall of the through groove 18, and the other end of the spring 20 is fixedly connected to one side of the toothed plate 21; the toothed plate 21 and the toothed rod 7 are both slidably connected inside the through groove 18; the upper inside of the upper mold 6 is fixedly connected to the material conveying pipe 4, and the upper mold 6 and the lower mold 8 are both fixedly connected to one side of the inside of the air inlet 10.

[0036] By activating cylinder 3, the upper mold 6 is moved downwards, while the telescopic rod 5 is pulled to ensure the stability of the upper mold 6 during movement. This allows the toothed rod 7 to be inserted into the mounting hole 9 into the through groove 18, pressing against the toothed plate 21 and simultaneously pressing against the telescopic component 19 and spring 20, generating a rebound force. Once the toothed rod 7 is fully inserted into the through groove 18, the toothed plate 21 is no longer compressed. The rebound force of the telescopic component 19 and spring 20 pushes the toothed plate 21, locking it inside the toothed rod 7. This ensures a tight connection between the upper mold 6 and the lower mold 8, achieving precise alignment and a secure connection between the upper mold 6 and the lower mold 8, preventing material leakage from affecting the quality and effect of blow molding.

[0037] Working principle: When the mold is needed, the cylinder 3 is activated to move the upper mold 6 downwards, while the telescopic rod 5 is pulled to ensure the smooth movement of the upper mold 6. This allows the toothed rod 7 to be inserted into the mounting hole 9 into the through groove 18, pressing the toothed plate 21 while simultaneously pressing the telescopic component 19 and the spring 20. When the toothed rod 7 is fully inserted into the through groove 18, the toothed plate 21 is no longer compressed. The rebound force of the telescopic component 19 and the spring 20 pushes the toothed plate 21, which is then locked inside the toothed rod 7, thus tightly connecting the upper mold 6 and the lower mold 8. This ensures the precise alignment and firm connection of the upper mold 6 and the lower mold 8, preventing material leakage from affecting the quality and effect of blow molding.

[0038] By connecting the upper mold 6 and the lower mold 8 simultaneously, the connecting pipe 23 is inserted into the interior of the upper mold 6 to ensure that the cooling chambers 17 in the upper mold 6 and the lower mold 8 are identical. After blow molding is completed, the cooler 12 is started to cool the water in the water tank 11 through the cooling pipe 13. Then, the water pump 14 is started to draw the cooled water through the water pumping pipe 15 and then input it into the cooling chamber 17 in the lower mold 8 through the water supply pipe 16. Finally, the cooling water is sent into the cooling chamber 17 in the upper mold 6 through the connecting pipe 23 to cool and lower the temperature of the blow-molded oil tank. This achieves rapid cooling and shaping of the blow-molded oil tank, ensuring the dimensional stability and structural strength of the oil tank and improving the production efficiency of the oil tank.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A blow molding die for an excavator fuel tank, comprising a base (1), characterized in that: A support frame (2) is fixedly connected to the upper part of the base (1). A cylinder (3) is fixedly connected to the upper inside of the support frame (2). An upper mold (6) is fixedly connected to the output end of the cylinder (3). Telescopic rods (5) are fixedly connected to the upper left and right sides of the upper mold (6). One end of the telescopic rod (5) is fixedly connected to the bottom of the upper side of the support frame (2). A water tank (11) is fixedly connected to the upper part of the base (1). A cooler is fixedly connected to the rear side of the outer wall of the water tank (11). 12) The output end of the cooler (12) is fixedly connected to a cooling pipe (13), the cooling pipe (13) is fixedly connected to the inside of the water tank (11), a water pumping assembly is fixedly connected to the upper side of the base (1), the water pumping assembly is used to transport cooling water, a lower mold (8) is fixedly connected to the upper part of the water tank (11), and cooling chambers (17) are opened inside both the upper mold (6) and the lower mold (8), and a water inlet pipe (22) is fixedly connected to one side of the water tank (11).

2. The blow molding die for an excavator fuel tank according to claim 1, characterized in that: The upper mold (6) has toothed rods (7) fixedly connected to the four corners of its bottom. The lower mold (8) has mounting holes (9) at the four corners of its interior. The mounting holes (9) have through grooves (18) at their bottom. Two telescopic members (19) are fixedly connected to the inner walls of the through grooves (18). A toothed plate (21) is fixedly connected to one end of each telescopic member (19). A spring (20) is sleeved on the outside of each telescopic member (19). The toothed rods (7) are slidably connected inside the mounting holes (9) and engaged inside the toothed plate (21).

3. The blow molding die for an excavator fuel tank according to claim 1, characterized in that: The pumping assembly includes a water pump (14), which is fixedly connected to the upper side of the base (1). The input end of the water pump (14) is fixedly connected to a pumping pipe (15), and the output end of the water pump (14) is fixedly connected to a water delivery pipe (16).

4. The blow molding die for an excavator fuel tank according to claim 3, characterized in that: One end of the water pumping pipe (15) is fixedly connected to the inside of the water tank (11), and one end of the water supply pipe (16) is fixedly connected to the inside of the lower mold (8) and communicates with the cooling chamber (17).

5. The blow molding die for an excavator fuel tank according to claim 1, characterized in that: The lower mold (8) is fixedly connected to four corners of the upper part with connecting pipes (23). The connecting pipes (23) are engaged with the four corners of the upper mold (6). The connecting pipes (23) are connected to the cooling cavity (17) inside the upper mold (6).

6. The blow molding die for an excavator fuel tank according to claim 2, characterized in that: One end of the spring (20) is fixedly connected to one side of the inner wall of the through groove (18), and the other end of the spring (20) is fixedly connected to one side of the toothed plate (21).

7. The blow molding die for an excavator fuel tank according to claim 2, characterized in that: Both the toothed plate (21) and the toothed rod (7) are slidably connected inside the through groove (18).

8. The blow molding die for an excavator fuel tank according to claim 1, characterized in that: The upper mold (6) is fixedly connected to the upper side of the interior with a material conveying pipe (4), and both the upper mold (6) and the lower mold (8) are fixedly connected to an air inlet (10) on one side of the interior.

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