A mold for manufacturing FF double-walled fiberglass oil tanks

Abstract

This utility model relates to the technical field of FRP (fiberglass reinforced plastic) oil tank molds, and discloses a mold for manufacturing FF double-layer FRP oil tanks. The mold includes an upper mold, a sealing assembly at its bottom, a lower mold at its bottom, a connecting assembly on the outer wall of the upper mold, gear rings on both the outer walls of the upper and lower molds, a base plate at the bottom of the lower mold, and a gear on the top of the base plate. The outer wall of the gear meshes with the outer wall of the gear ring. The sealing assembly includes a first sealing strip, the outer wall of which is disposed at the bottom of the upper mold. In this utility model, the first sealing strip presses against the top of the lower mold, and then the second sealing strip presses against the bottom of the upper mold, avoiding gaps caused by poor fit in traditional splicing, which could lead to material leakage during pouring, winding, or curing. This reduces material waste and ensures a smooth inner wall and uniform structure for the oil tank.

Description

Technical Field

[0001] This utility model relates to the field of fiberglass oil tank mold technology, and in particular to a mold for manufacturing FF double-layer fiberglass oil tanks. Background Technology

[0002] In the petrochemical, transportation, and other fields, FF double-walled fiberglass oil tanks are widely used for storing various fuels and chemical media due to their advantages such as corrosion resistance, light weight, high strength, and good leak-proof performance. Their double-walled design, with the inner layer directly storing the media and the outer layer forming a protective barrier, effectively reduces the risk of media leakage and ensures environmental safety. The mold, as the core equipment in the manufacture of FF double-walled fiberglass oil tanks, directly determines the molding quality, production efficiency, and operational safety of the tank due to its structural rationality and performance stability.

[0003] Existing molds for manufacturing FF double-walled fiberglass oil tanks mostly adopt a split design in terms of structure, usually consisting of two semi-circular molds combined and mechanically connected to achieve mold closing and fixation. The technical principle is to use the shape of the mold cavity to limit the outer dimensions of the oil tank. After the mold is closed, fiberglass and resin composite materials are laid or wrapped on the inner wall of the mold by manual or mechanical means. Then, through a curing process, the composite material is cured into the shape of the mold cavity to form the oil tank cylinder structure. Driven by the mold rotation mechanism, the mold can rotate around its own axis, and the centrifugal force is used to evenly distribute the composite material on the inner wall of the mold to ensure uniform oil tank wall thickness.

[0004] However, in existing technologies, the two semi-circular molds are fixed by simple mechanical connections during the splicing process, making it difficult to ensure that the splicing surfaces fit completely and tightly. Gaps are easily generated after the mold is closed. The presence of these gaps makes it easy for materials such as resin to leak from the gaps during the pouring, winding, or curing process. This not only causes a large amount of material waste and increases production costs, but also allows external dust and impurities to easily mix into the fiberglass material through these gaps, resulting in air bubbles and delamination inside the molded oil tank, as well as various defects on the surface. This seriously affects the smoothness and structural uniformity of the inner wall of the oil tank, thereby reducing the overall quality and service life of the oil tank. Therefore, a mold for manufacturing FF double-layer fiberglass oil tanks is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a mold for manufacturing FF double-layer fiberglass oil tanks, which aims to improve the problem that traditional splicing in the prior art is prone to gaps after mold closing due to poor adhesion.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A mold for manufacturing FF double-walled fiberglass oil tanks includes an upper mold, a sealing component at the bottom of the upper mold, a lower mold at the bottom of the upper mold, a connecting component on the outer wall of the upper mold, gear rings on both the outer walls of the upper mold and the lower mold, a base plate at the bottom of the lower mold, and a gear on the top of the base plate, the outer wall of the gear meshing with the outer wall of the gear ring.

[0008] The sealing assembly includes a first sealing strip, the outer wall of which is disposed at the bottom of the upper mold. An upper locking plate is fixedly connected to the bottom of the upper mold. The outer wall of the first sealing strip is slidably connected to the inner wall of the upper locking plate. A first limiting strip is fixedly connected to the top of the first sealing strip. A lower locking plate is fixedly connected to the top of the lower mold. A second sealing strip is slidably connected to the inner wall of the lower locking plate. A second limiting strip is fixedly connected to the bottom of the second sealing strip. Both the inner walls of the upper and lower locking plates are provided with reset components.

[0009] As a further description of the above technical solution:

[0010] The reset assembly includes a spring one and a spring two. One end of the spring one is fixedly connected to the inner wall of the upper locking plate, and the other end of the spring one is fixedly connected to the outer wall of the limiting strip one. One end of the spring two is fixedly connected to the inner wall of the lower locking plate, and the other end of the spring two is fixedly connected to the outer wall of the limiting strip two.

[0011] As a further description of the above technical solution:

[0012] The connecting assembly includes a limiting rod, the outer wall of which is disposed on the outer wall of the upper mold.

[0013] As a further description of the above technical solution:

[0014] A fixing plate is fixedly connected to the outer wall of the upper mold, and a fixing rod is fixedly connected to the bottom of the fixing plate.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the limiting rod is fixedly connected to the outer wall of the fixing rod, the outer wall of the lower mold is fixedly connected to a fixing block, and the inner wall of the fixing block is slidably connected to a sliding rod.

[0017] As a further description of the above technical solution:

[0018] One end of the sliding rod is fixedly connected to a limiting block, and the outer wall of the limiting block is slidably connected to the inner wall of the fixed block.

[0019] As a further description of the above technical solution:

[0020] A spring is fitted on the outer wall of the sliding rod. One end of the spring is fixedly connected to the outer wall of the sliding rod, and the other end of the spring is fixedly connected to the inner wall of the fixing block.

[0021] As a further description of the above technical solution:

[0022] A pull rod is fixedly connected to the outer wall of the sliding rod, and a locking block is fixedly connected to the outer wall of the sliding rod. The outer wall of the locking block and the outer wall of the limiting rod are locked together.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the sealing strip one presses against the top of the lower mold, and then the sealing strip two presses against the bottom of the upper mold, achieving the effect of sealing after mold closing. This avoids the gap problem caused by poor adhesion in traditional splicing, which leads to material leakage from the gap during pouring, winding or curing, and impurities are easily mixed into the fiberglass material to form bubbles, delamination or surface defects, thereby reducing material waste and ensuring that the inner wall of the oil tank is smooth and the structure is uniform.

[0025] 2. In this utility model, the sliding rod is moved by pulling the pull rod, and then the locking block is moved by the sliding rod, which achieves the effect of quick mold closing and disassembly. This avoids the need to tighten and loosen bolts one by one in the existing fixing method, which takes a long time to close and disassemble the mold, resulting in increased downtime. At the same time, the manual tightening force varies greatly, which can easily lead to local bolts being too loose or too tight, affecting the mold sealing and dimensional accuracy. Therefore, the mold closing and disassembly time is shortened, production efficiency is greatly improved, and the mold closing accuracy is also improved. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a mold for manufacturing an FF double-layer fiberglass oil tank according to the present invention;

[0027] Figure 2 This is a schematic diagram of the upper clamping plate of a mold for manufacturing an FF double-layer fiberglass oil tank according to the present invention.

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 This is a schematic diagram of the limiting rod structure of a mold for manufacturing an FF double-layer fiberglass oil tank, as proposed in this utility model.

[0030] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0031] Legend:

[0032] 1. Upper mold; 2. Lower mold; 3. Gear ring; 4. Base plate; 5. Gear; 6. Upper locking plate; 7. Sealing strip one; 8. Limiting strip one; 9. Spring one; 10. Lower locking plate; 11. Sealing strip two; 12. Limiting strip two; 13. Spring two; 14. Fixing plate; 15. Fixing rod; 16. Limiting rod; 17. Fixing block; 18. Sliding rod; 19. Limiting block; 20. Spring three; 21. Pull rod; 22. Locking block. Detailed Implementation

[0033] 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.

[0034] Reference Figures 1-3 This utility model provides an embodiment of a mold for manufacturing FF double-layer fiberglass oil tanks, including an upper mold 1, which cooperates with a lower mold 2 to form a complete cylindrical cavity, providing a forming space for the outer or inner layer of the FF double-layer fiberglass oil tank, thereby achieving the effect of shaping the main body of the oil tank. The upper mold 1 is provided with a sealing component at its bottom, and the lower mold 2 is provided at its bottom. The outer wall of the upper mold 1 is provided with a connecting component. Both the outer walls of the upper mold 1 and the lower mold 2 are provided with gear rings 3. The bottom of the lower mold 2 is provided with a base plate 4, and the top of the base plate 4 is provided with a gear 5. The outer wall of the gear 5 meshes with the outer wall of the gear ring 3, and is used to drive the gear ring 3 to rotate under the drive of a power device, thereby rotating the mold and achieving the effect of rotating the oil tank. The outer wall of the gear 5 meshes with the outer wall of the gear ring 3.

[0035] The sealing assembly includes a sealing strip 7, which is elongated and designed to fit tightly against the lower mold 2 when the upper mold 1 and lower mold 2 are closed. This, along with the upper locking plate 6 and lower locking plate 10, forms a sealing barrier to prevent resin leakage and the intrusion of external impurities. The outer wall of the sealing strip 7 is located at the bottom of the upper mold 1, where the upper locking plate 6 is fixedly connected. The upper locking plate 6, in conjunction with the lower locking plate 10, ensures precise alignment of the upper mold 1 and lower mold 2, guaranteeing accurate installation of the sealing assembly and preventing misalignment during mold closing. The outer wall of the sealing strip 7 is slidably connected to the inner wall of the upper locking plate 6. The top of the sealing strip 7... A limiting strip 8 is fixedly connected to the upper mold 2. The limiting strip 8 restricts the sliding range of the sealing strip 7 within the upper locking plate 6. Together with a spring 9, it ensures that the sealing strip 7 always has a downward preload, achieving a tight contact between the sealing strip 7 and the second sealing strip 11. A lower locking plate 10 is fixedly connected to the top of the lower mold 2. The lower locking plate 10 accommodates and limits the second sealing strip 11, working with the upper locking plate 6 to achieve a tight closure between the upper mold 1 and the lower mold 2, improving the overall sealing performance of the mold. The second sealing strip 11 is slidably connected to the inner wall of the lower locking plate 10. The second sealing strip 11 is used to press against the upper mold 1 when the upper mold 1 and lower mold 2 are closed, working in conjunction with a spring 13. The sealing strip 11 is always under upward preload to enhance the sealing effect. A limiting strip 12 is fixedly connected to the bottom of the sealing strip 11. The limiting strip 12 restricts the sliding range of the sealing strip 11 within the lower locking plate 10 and, in conjunction with spring 13, prevents the sealing strip 11 from falling out of the lower locking plate 10, thus ensuring the structural stability of the sealing assembly. Both the upper locking plate 6 and the lower locking plate 10 have reset components on their inner walls. These reset components include spring 9 and spring 13. Spring 9 pushes the limiting strip 8 to move the sealing strip 7 downwards, achieving tight contact with the lower mold 2 and enhancing the sealing performance. Spring 13... 13 is used to push the limiting strip 12 to drive the sealing strip 11 to move upward, so as to achieve tight contact with the upper mold 1 and improve the sealing reliability. One end of the spring 9 is fixedly connected to the inner wall of the upper locking plate 6, and the other end of the spring 9 is fixedly connected to the outer wall of the limiting strip 8. One end of the spring 13 is fixedly connected to the inner wall of the lower locking plate 10, and the other end of the spring 13 is fixedly connected to the outer wall of the limiting strip 12. When the upper mold 1 and the lower mold 2 are closed, the spring 9 and the spring 13 are compressed, generating a reverse elastic force to make the sealing strip 7 and the sealing strip 11 fit tightly against the upper mold 1 and the lower mold 2, so as to achieve the effect of automatically compensating for the sealing gap.

[0036] Reference Figure 4 and Figure 5The connecting assembly includes a limiting rod 16, which engages with a locking block 22 and, together with a fixing rod 15 and a fixing plate 14, connects the upper mold 1 and the lower mold 2, achieving rapid mold fixation. The outer wall of the limiting rod 16 is disposed on the outer wall of the upper mold 1, and a fixing plate 14 is fixedly connected to the outer wall of the upper mold 1. A fixing rod 15 is fixedly connected to the bottom of the fixing plate 14. The fixing rod 15, together with the fixing plate 14, fixes the limiting rod 16 to the outer wall of the upper mold 1, ensuring accurate engagement between the limiting rod 16 and the locking block 22. The outer wall of the positioning rod 16 is fixedly connected to the outer wall of the fixing rod 15. A fixing block 17 is fixedly connected to the outer wall of the lower mold 2. A sliding rod 18 is slidably connected to the inner wall of the fixing block 17. The sliding rod 18 drives the engaging block 22 to move, and cooperates with the limiting block 19 to limit its sliding range, achieving the effect of accurately engaging or disengaging the engaging block 22 with the limiting rod 16. One end of the sliding rod 18 is fixedly connected to the limiting block 19, which prevents the sliding rod 18 from falling out of the fixing block 17. The limiting block 19, in conjunction with the inner wall of the fixing block 17, limits the maximum sliding distance of the sliding rod 18, ensuring... To ensure the structural integrity of the connecting components, the outer wall of the limiting block 19 is slidably connected to the inner wall of the fixing block 17. A spring 20 is sleeved on the outer wall of the sliding rod 18. One end of the spring 20 is fixedly connected to the outer wall of the sliding rod 18, and the other end is fixedly connected to the inner wall of the fixing block 17. The spring 20 provides a restoring force to the sliding rod 18. When the pull rod 21 is pulled to separate the engaging block 22 from the limiting rod 16, the spring 20 is compressed. After the pull rod 21 is released, the spring 20 pushes the sliding rod 18, causing the engaging block 22 to return to its original position relative to the limiting rod 16. The sliding rod 18 is fixedly connected to a pull rod 21 on its outer wall. The pull rod 21 is used by the operator to hold and pull the sliding rod 18. The sliding rod 18 drives the locking block 22 to move, achieving the effect of convenient operation of the connecting component. The locking block 22 is fixedly connected to the outer wall of the sliding rod 18. The locking block 22 engages with the limiting rod 16. Together with the sliding rod 18 and the spring 3 20, the upper mold 1 and the lower mold 2 are quickly fixed and separated, thereby improving the opening and closing efficiency of the mold. The outer wall of the locking block 22 engages with the outer wall of the limiting rod 16.

[0037] Working principle: When the upper mold 1 and lower mold 2 are closed, firstly, sealing strip 7 contacts the top of the lower mold 2, and then sealing strip 11 contacts the bottom of the upper mold 1. When sealing strip 7 contacts the lower mold 2, the compression of sealing strip 7 causes it to slide on the inner wall of the upper locking plate 6. Then, the sliding of sealing strip 7 drives the limiting strip 8 to slide on the inner wall of the upper locking plate 6. Subsequently, the sliding of the limiting strip 8 compresses the spring 9. Then, after sealing strip 11 contacts the bottom of the upper mold 1, the compression of sealing strip 11 by the upper mold 1 causes it to slide on the lower locking plate 10. The inner wall slides, and then the sliding of the sealing strip 2 11 drives the limiting strip 2 12 to slide on the inner wall of the lower locking plate 10. Then, the sliding of the limiting strip 2 12 compresses the spring 2 13. In turn, the elastic potential energy generated by the compression of the spring 1 9 and the spring 2 13 drives the sealing strip 1 7 and the sealing strip 2 11 to compress the lower mold 2 and the upper mold 1, achieving a sealing effect when the upper mold 1 and the lower mold 2 are closed. This avoids the gap problem caused by poor adhesion in traditional splicing, which leads to material leakage from the gap during the pouring, winding or curing process, and impurities are easily mixed into the fiberglass material to form bubbles, delamination or surface defects.

[0038] When the upper mold 1 and the lower mold 2 are closed, the pull rod 21 is pulled first. The pull rod 21 causes the sliding rod 18 to slide on the inner wall of the fixed block 17. Then, the sliding of the sliding rod 18 causes the limiting block 19 to move. The movement of the limiting block 19 compresses the spring 20. Then, the movement of the sliding rod 18 causes the locking block 22 to move. When the upper mold 1 and the lower mold 2 are closed, the pull rod 21 is released. The rebound of the spring 20 causes the limiting block 19 to reset. Then, the reset of the limiting block 19 causes the sliding rod 18 to reset. Then, the reset of the sliding rod 18 causes the locking block 22 to engage with the limiting rod 16. This avoids the need to tighten and loosen the bolts one by one in the existing fixing method, which takes a long time to close and disassemble the mold, resulting in increased downtime. At the same time, the manual tightening force varies greatly, which can easily cause some bolts to be too loose or too tight, affecting the mold sealing and dimensional accuracy.

[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 mold for manufacturing FF double-walled fiberglass oil tanks, comprising an upper mold (1), characterized in that: The upper mold (1) is provided with a sealing component at its bottom, and the lower mold (2) is provided at its bottom. The upper mold (1) is provided with a connecting component on its outer wall. Both the outer wall of the upper mold (1) and the outer wall of the lower mold (2) are provided with gear rings (3). The lower mold (2) is provided with a base plate (4) at its bottom. The base plate (4) is provided with a gear (5) at its top. The outer wall of the gear (5) meshes with the outer wall of the gear ring (3). The sealing assembly includes a sealing strip (7), the outer wall of which is disposed at the bottom of the upper mold (1). The bottom of the upper mold (1) is fixedly connected to an upper locking plate (6). The outer wall of the sealing strip (7) is slidably connected to the inner wall of the upper locking plate (6). The top of the sealing strip (7) is fixedly connected to a limiting strip (8). The top of the lower mold (2) is fixedly connected to a lower locking plate (10). The inner wall of the lower locking plate (10) is slidably connected to a sealing strip (11). The bottom of the sealing strip (11) is fixedly connected to a limiting strip (12). The inner walls of the upper locking plate (6) and the lower locking plate (10) are both provided with reset components.

2. The mold for manufacturing an FF double-walled fiberglass oil tank according to claim 1, characterized in that: The reset assembly includes a spring one (9) and a spring two (13). One end of the spring one (9) is fixedly connected to the inner wall of the upper locking plate (6), and the other end of the spring one (9) is fixedly connected to the outer wall of the limiting strip one (8). One end of the spring two (13) is fixedly connected to the inner wall of the lower locking plate (10), and the other end of the spring two (13) is fixedly connected to the outer wall of the limiting strip two (12).

3. The mold for manufacturing an FF double-walled fiberglass oil tank according to claim 1, characterized in that: The connecting assembly includes a limiting rod (16), the outer wall of which is disposed on the outer wall of the upper mold (1).

4. The mold for manufacturing an FF double-walled fiberglass oil tank according to claim 3, characterized in that: The upper mold (1) is fixedly connected to a fixing plate (14) on its outer wall, and a fixing rod (15) is fixedly connected to the bottom of the fixing plate (14).

5. The mold for manufacturing an FF double-walled fiberglass oil tank according to claim 4, characterized in that: The outer wall of the limiting rod (16) is fixedly connected to the outer wall of the fixing rod (15), and the outer wall of the lower mold (2) is fixedly connected to the fixing block (17), and the inner wall of the fixing block (17) is slidably connected to the sliding rod (18).

6. The mold for manufacturing an FF double-walled fiberglass oil tank according to claim 5, characterized in that: One end of the sliding rod (18) is fixedly connected to a limiting block (19), and the outer wall of the limiting block (19) is slidably connected to the inner wall of the fixed block (17).

7. The mold for manufacturing an FF double-walled fiberglass oil tank according to claim 6, characterized in that: The outer wall of the sliding rod (18) is fitted with a spring three (20), one end of the spring three (20) is fixedly connected to the outer wall of the sliding rod (18), and the other end of the spring three (20) is fixedly connected to the inner wall of the fixing block (17).

8. The mold for manufacturing an FF double-walled fiberglass oil tank according to claim 7, characterized in that: A pull rod (21) is fixedly connected to the outer wall of the sliding rod (18), and a locking block (22) is fixedly connected to the outer wall of the sliding rod (18). The outer wall of the locking block (22) and the outer wall of the limiting rod (16) are locked together.

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