Exhaust structure of polyurethane foaming mold

Abstract

The utility model relates to the technical field of molds, and discloses a polyurethane foaming mold exhaust structure which comprises a base, an opening mold is fixedly connected to the upper surface of the middle of the base, an electric push rod is fixedly connected to the interior of the opening mold, and the output end of the electric push rod is fixedly connected with a first supporting column. A first supporting rod is rotatably connected to the interior of the first supporting column, a second supporting column is rotatably connected to the outer wall of the first supporting rod, the outer wall of the second supporting column is slidably connected to the interior of the opening mold, a baffle is rotatably connected to the outer wall of the second supporting column, and an auxiliary assembly is arranged in the baffle. According to the utility model, the electric push rod is started to drive the first support column to slide, so that the first support rod rotates along with the sliding of the first support column, and finally, the purpose of controlling the gas displacement can be realized, and the gas displacement can be effectively controlled, so that the foaming process is optimized, looseness or cavitation bubbles are avoided, and the defects of shrinkage cavities and the like are reduced.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a venting structure for a polyurethane foam mold. Background Technology

[0002] The venting structure of polyurethane foam molds is mainly used to expel air and reactive gases from the mold cavity, preventing defects such as bubbles and material shortages in the product. Common venting methods include opening shallow grooves (venting grooves) on the parting surface, setting small venting holes, using porous metal or breathable steel inserts, and utilizing the gap between the parting surfaces for natural venting.

[0003] Traditional polyurethane foam molds utilize the pressure generated by the expansion of polyurethane material during the foaming process to naturally expel air and reactive gases from the mold cavity. However, the traditional method of venting gas too quickly causes a sudden drop in local foaming pressure, resulting in reduced foam density and the appearance of loose or cavitary structures. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a venting structure for polyurethane foam molds, which aims to improve the venting structure of traditional polyurethane foam molds, which leads to reduced foam density and problems such as looseness or voids.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A polyurethane foam mold venting structure includes a base, an open mold fixedly connected to the upper surface of the middle part of the base, an electric push rod fixedly connected inside the open mold, a first support column fixedly connected to the output end of the electric push rod, a first support rod rotatably connected inside the first support column, a second support column rotatably connected to the outer wall of the first support rod, the outer wall of the second support column slidably connected to the inside of the open mold, a baffle rotatably connected to the outer wall of the second support column, and an auxiliary component disposed inside the baffle.

[0007] Preferably, the auxiliary component includes a first fixing block, the outer wall of the first fixing block is fixedly connected to the inside of the baffle, a connecting rod is rotatably connected to the outer wall of the first fixing block, and a second fixing block is rotatably connected to the outer wall of the connecting rod.

[0008] Preferably, the outer wall of the baffle is slidably connected to the inside of the opening mold, and the outer wall of the second fixing block is fixedly connected to the inside of the first support column.

[0009] Preferably, a base plate is fixedly connected to the lower surface of the first support column, and the lower surface of the base plate is slidably connected to the inside of the opening mold.

[0010] Preferably, a third support column is fixedly connected to the outer upper surface of the base, and a first support plate is fixedly connected to the outer wall of the third support column.

[0011] Preferably, a hydraulic rod is rotatably connected to the outer wall of the first support plate, and a third fixing block is fixedly connected to the output end of the hydraulic rod. An L-shaped rod is rotatably connected to the inside of the third fixing block.

[0012] Preferably, the outer wall of the L-shaped rod is rotatably connected to a second support rod, the inner wall of the L-shaped rod is rotatably connected to the outer wall of the first support plate, and the outer wall of the second support rod is rotatably connected to a sliding block.

[0013] Preferably, a second support plate is fixedly connected to the lower surface of the sliding block, a limit block is slidably connected to the outer wall of the sliding block, and the outer wall of the limit block is fixedly connected to the outer wall of the first support plate.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the first support column is slid by driving the electric push rod, and then the first support rod rotates with the sliding of the first support column. Then, the second support column slides under the drive of the first support rod, and then the baffle rotates with the sliding of the second support column. Finally, the purpose of controlling the exhaust volume can be achieved, which can effectively control the exhaust volume, thereby optimizing the foaming process, avoiding looseness or cavitation, and reducing defects such as shrinkage cavities.

[0016] 2. In this utility model, the third fixed block is slid by activating the hydraulic rod, and then the L-shaped rod rotates under the drive of the third fixed block. Subsequently, the second support rod will rotate with the rotation of the L-shaped rod, and finally the purpose of sealing the mold can be achieved. This can effectively prevent the foam material from leaking during the expansion process and ensure that the foam material expands and solidifies uniformly within the set area. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a polyurethane foam mold venting structure proposed in this utility model;

[0018] Figure 2 This is a partial structural diagram of an L-shaped rod for a polyurethane foam mold venting structure proposed in this utility model;

[0019] Figure 3 This is a partial structural diagram of the second support column of the venting structure of a polyurethane foam mold proposed in this utility model;

[0020] Figure 4 This is a partial structural diagram of the first support column of the venting structure of a polyurethane foam mold proposed in this utility model;

[0021] Figure 5 This is a partial structural diagram of the limiting block of the venting structure of a polyurethane foam mold proposed in this utility model.

[0022] Legend:

[0023] 1. Base; 2. Opening mold; 3. Electric push rod; 4. First support column; 5. First support rod; 6. Second support column; 7. Baffle; 8. First fixing block; 9. Connecting rod; 10. Second fixing block; 11. Base plate; 12. Third support column; 13. First support plate; 14. Hydraulic rod; 15. Third fixing block; 16. L-shaped rod; 17. Second support rod; 18. Sliding block; 19. Second support plate; 20. Limiting block. Detailed Implementation

[0024] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] Reference Figures 1-3 An embodiment of this utility model provides a polyurethane foam mold venting structure, including a base 1, an open mold 2 fixedly connected to the upper surface of the middle part of the base 1, an electric push rod 3 fixedly connected inside the open mold 2, a first support column 4 fixedly connected to the output end of the electric push rod 3, a first support rod 5 rotatably connected inside the first support column 4, a second support column 6 rotatably connected to the outer wall of the first support rod 5, the outer wall of the second support column 6 slidably connected to the inside of the open mold 2, a baffle 7 rotatably connected to the outer wall of the second support column 6, and an auxiliary component provided inside the baffle 7;

[0026] Specifically, when the electric push rod 3 drives the first support column 4 to slide, the first support column 4 drives the first support rod 5 to rotate. When the first support rod 5 drives the second support column 6 to rotate, the second support column 6 drives the baffle 7 to rotate. When the first support rod 5 drives the second support column 6 to slide, the outer wall of the second support column 6 slides inside the opening mold 2. When the second support column 6 drives the baffle 7 to rotate, the outer wall of the baffle 7 slides inside the opening mold 2.

[0027] Reference Figures 3-5The auxiliary components include a first fixing block 8, the outer wall of which is fixedly connected to the inside of the baffle 7, a connecting rod 9 rotatably connected to the outer wall of the first fixing block 8, and a second fixing block 10 rotatably connected to the outer wall of the connecting rod 9; the outer wall of the baffle 7 is slidably connected to the inside of the opening mold 2, and the outer wall of the second fixing block 10 is fixedly connected to the inside of the first support column 4; a base plate 11 is fixedly connected to the lower surface of the first support column 4, and the lower surface of the base plate 11 is slidably connected to the inside of the opening mold 2.

[0028] Specifically, when the first support column 4 drives the second fixed block 10 to slide, the second fixed block 10 drives the connecting rod 9 to rotate. When the connecting rod 9 drives the first fixed block 8 to rotate, the first fixed block 8 drives the baffle 7 to rotate. This can achieve the effect of controlling the exhaust volume, avoiding looseness or cavitation, and reducing defects such as shrinkage cavities.

[0029] Reference Figure 2 and Figure 5 A third support column 12 is fixedly connected to the outer upper surface of the base 1, and a first support plate 13 is fixedly connected to the outer wall of the third support column 12. A hydraulic rod 14 is rotatably connected to the outer wall of the first support plate 13, and a third fixing block 15 is fixedly connected to the output end of the hydraulic rod 14. An L-shaped rod 16 is rotatably connected to the inside of the third fixing block 15. A second support rod 17 is rotatably connected to the outer wall of the L-shaped rod 16, and the inside of the L-shaped rod 16 is rotatably connected to the outer wall of the first support plate 13. A sliding block 18 is rotatably connected to the outer wall of the second support rod 17. A second support plate 19 is fixedly connected to the lower surface of the sliding block 18, and a limit block 20 is slidably connected to the outer wall of the sliding block 18. The outer wall of the limit block 20 is fixedly connected to the outer wall of the first support plate 13.

[0030] Specifically, the hydraulic rod 14 is used to drive the third fixed block 15 to slide, the third fixed block 15 is used to drive the L-shaped rod 16 to rotate, the L-shaped rod 16 is used to drive the second support rod 17 to rotate, the second support rod 17 is used to drive the sliding block 18 to slide and drive the sliding block 18 to slide inside the limiting block 20, the sliding block 18 is used to drive the second support plate 19 to slide, and the limiting block 20 is used to limit the sliding position of the sliding block 18, thereby achieving the effect of sealing the mold and ensuring that the foamed material expands and cures uniformly within the set area.

[0031] Working principle: When the venting structure of the foaming mold is required, the electric push rod 3 drives the first support column 4 to slide, thereby rotating the first support rod 5, which in turn drives the second support column 6 to slide, causing the baffle 7 to rotate. At the same time, the first fixed block 8 rotates, causing the connecting rod 9 to rotate, thereby causing the base plate 11 to slide. This achieves the effect of controlling the venting volume. The hydraulic rod 14 drives the third fixed block 15 to slide, which in turn drives the L-shaped rod 16 to rotate, causing the second support rod 17 to rotate, which in turn drives the sliding block 18 to slide, thereby causing the second support plate 19 to slide. This achieves the effect of closing the mold. This not only effectively controls the venting volume, thereby optimizing the foaming process, avoiding defects such as looseness or voids, and reducing shrinkage cavities, but also effectively prevents leakage of foamed material during expansion, ensuring that the foamed material expands and solidifies uniformly within the set area.

[0032] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are 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 polyurethane foaming mold exhaust structure comprising a base (1), characterized in that: An opening mold (2) is fixedly connected to the upper surface of the middle part of the base (1). An electric push rod (3) is fixedly connected inside the opening mold (2). A first support column (4) is fixedly connected to the output end of the electric push rod (3). A first support rod (5) is rotatably connected inside the first support column (4). A second support column (6) is rotatably connected to the outer wall of the first support rod (5). The outer wall of the second support column (6) is slidably connected inside the opening mold (2). A baffle (7) is rotatably connected to the outer wall of the second support column (6). An auxiliary component is provided inside the baffle (7).

2. The venting structure for a polyurethane foam mold according to claim 1, characterized in that: The auxiliary component includes a first fixing block (8), the outer wall of which is fixedly connected to the inside of the baffle (7), a connecting rod (9) is rotatably connected to the outer wall of the first fixing block (8), and a second fixing block (10) is rotatably connected to the outer wall of the connecting rod (9).

3. The polyurethane foaming mold venting structure according to claim 2, wherein: The outer wall of the baffle (7) is slidably connected to the inside of the opening mold (2), and the outer wall of the second fixing block (10) is fixedly connected to the inside of the first support column (4).

4. The venting structure for a polyurethane foam mold according to claim 1, characterized in that: The lower surface of the first support column (4) is fixedly connected to a base plate (11), and the lower surface of the base plate (11) is slidably connected to the inside of the opening mold (2).

5. The venting structure for a polyurethane foam mold according to claim 1, characterized in that: A third support column (12) is fixedly connected to the outer upper surface of the base (1), and a first support plate (13) is fixedly connected to the outer wall of the third support column (12).

6. The venting structure for a polyurethane foam mold according to claim 5, characterized in that: A hydraulic rod (14) is rotatably connected to the outer wall of the first support plate (13), and a third fixing block (15) is fixedly connected to the output end of the hydraulic rod (14). An L-shaped rod (16) is rotatably connected inside the third fixing block (15).

7. The venting structure for a polyurethane foam mold according to claim 6, characterized in that: The outer wall of the L-shaped rod (16) is rotatably connected to a second support rod (17), the inner wall of the L-shaped rod (16) is rotatably connected to the outer wall of the first support plate (13), and the outer wall of the second support rod (17) is rotatably connected to a sliding block (18).

8. The venting structure for a polyurethane foam mold according to claim 7, characterized in that: The lower surface of the sliding block (18) is fixedly connected to a second support plate (19), and the outer wall of the sliding block (18) is slidably connected to a limit block (20), and the outer wall of the limit block (20) is fixedly connected to the outer wall of the first support plate (13).

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