Anti-sticking mold for polyurethane foam molding

Abstract

The utility model relates to the technical field of foam forming molds, and discloses an anti-sticking mold for polyurethane foam forming, which comprises a bottom mold, a top cover is arranged at the top of the bottom mold, support plates are fixedly connected to two sides of the top of the bottom mold, a chain is fixedly connected to the inside of the support plate on one side, and a movable plate is fixedly connected to one side of the chain. And a sliding groove is formed in one side of the interior of the supporting plate, the outer wall of the moving plate is slidably connected to the interior of the sliding groove, and a limiting groove is formed in the supporting plate. The driving chain drives the moving plate to slide in the sliding groove, so that the sliding rod moves along with the moving plate, the brush horizontally moves, the limiting rod is matched with the limiting groove, the sliding rod drives the brush to extend into the bottom die, the inner wall of the bottom die is evenly coated with a release agent, and polyurethane foam is prevented from being adhered. The problem that a mold for polyurethane foam forming is prone to being adhered by materials is solved, and the production quality of the mold is improved.

Description

Technical Field

[0001] This utility model relates to the field of foam molding mold technology, and in particular to an anti-stick mold for polyurethane foam molding. Background Technology

[0002] Polyurethane foam is a polymer material made from isocyanates, polyols, and additives through a chemical reaction. It contains numerous tiny pores, giving it a lightweight and porous nature. Polyurethane (PU) foam manufacturing typically requires molds to ensure product shape, dimensional accuracy, and surface quality. Mold design, material selection, and process optimization directly impact production efficiency and product quality.

[0003] During the manufacturing process, if the surface of the mold has high roughness, or has defects such as scratches or impurities, these undesirable conditions will directly affect the molding quality of the polyurethane foam material. Due to these uneven areas, the polyurethane foam material is prone to sticking to these places during the molding process, which will lead to the phenomenon of sticking to the mold. Sticking to the mold will not only reduce the surface quality of the product, but may also damage the mold, increase maintenance costs, and affect production efficiency. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an anti-stick mold for polyurethane foam molding, which aims to improve the problem that existing molds for polyurethane foam molding are easily adhered to by materials.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-stick mold for polyurethane foam molding, comprising a bottom mold, a top cover on the top of the bottom mold, support plates fixedly connected to both sides of the top of the bottom mold, a chain fixedly connected inside one side of the support plate, a movable plate fixedly connected to one side of the chain, a sliding groove opened inside one side of the support plate, the outer wall of the movable plate slidably connected to the sliding groove, a limiting groove opened inside the support plate, sliding rods slidably connected to both sides of the movable plate, a brush fixedly connected to the bottom of the sliding rod, a limiting rod fixedly connected to one side of the outer wall of the sliding rod, the outer wall of the limiting rod slidably connected to the limiting groove, a spring sleeved on the outer wall of the sliding rod, one end of the spring fixedly connected to the outer wall of the sliding rod, the other end of the spring fixedly connected to the outer wall of the movable plate, and a storage component provided on the top of the movable plate.

[0006] Furthermore, the storage assembly includes a storage box and a telescopic conduit. The bottom of the storage box is fixedly connected to the top of the movable plate, one end of the telescopic conduit is fixedly connected to the inside of the storage box, and the other end of the telescopic conduit is fixedly connected to the inside of the brush.

[0007] Furthermore, receiving boxes are fixedly connected to both sides of the top of the bottom mold.

[0008] Furthermore, a plug is fixedly connected to the bottom of the top cover, and a slot is provided inside the bottom mold.

[0009] Furthermore, the outer wall of the insert is slidably connected to the inside of the slot, a spring sheet is fixedly connected to one side of the inside of the insert, and a locking block is fixedly connected to one side of the outer wall of the spring sheet.

[0010] Furthermore, a slot is provided inside the bottom mold, and the outer wall of the card block is slidably connected inside the slot.

[0011] Furthermore, a sliding column is slidably connected inside the bottom mold, a top block is fixedly connected to the top of the sliding column, and the outer wall of the top block is slidably connected inside the bottom mold.

[0012] Furthermore, a second spring is fitted on the outer wall of the sliding column, with one end of the second spring fixedly connected to the inner wall of the top block and the other end of the second spring fixedly connected to the outer wall of the bottom mold.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, the moving plate is first driven by the drive chain to slide in the slide groove, so that the slide rod moves accordingly and the brush moves horizontally. The cooperation between the limiting rod and the limiting groove causes the slide rod to drive the brush to extend into the bottom mold, so that the release agent is evenly applied to the inner wall of the bottom mold to prevent polyurethane foam from adhering. This solves the problem that the mold for polyurethane foam molding is easily adhered to by materials and improves the production quality of the mold.

[0015] 2. In this utility model, the top cover covers the top of the bottom mold, and the insert of the top cover is inserted into the slot of the bottom mold. During the insertion process, the card block is squeezed back. After the insert is fully inserted, the spring plate pushes the card block to pop out and lock into the card slot, thereby fixing the top cover and the bottom mold. This solves the problem of the mold being inconvenient to open and remove, and improves the convenience of using the mold. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of an anti-stick mold for polyurethane foam molding proposed in this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the support plate structure of an anti-stick mold for polyurethane foam molding proposed in this utility model.

[0018] Figure 3 This is a schematic cross-sectional view of the bottom mold of an anti-stick mold for polyurethane foam molding proposed in this utility model.

[0019] Figure 4 for Figure 3Enlarged view of point A in the middle.

[0020] Legend:

[0021] 1. Bottom mold; 2. Support plate; 3. Limiting groove; 4. Moving plate; 5. Storage box; 6. Telescopic guide tube; 7. Brush; 8. Receiving box; 9. Chain; 10. Spring 1; 11. Limiting rod; 12. Sliding rod; 13. Sliding groove; 14. Top cover; 15. Top block; 16. Slot; 17. Slot; 18. Locking block; 19. Spring plate; 20. Insert block; 21. Sliding column; 22. Spring 2. Detailed Implementation

[0022] 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.

[0023] Reference Figures 1-3 This utility model provides an embodiment of an anti-stick mold for polyurethane foam molding, comprising a bottom mold 1, a top cover 14 on the top of the bottom mold 1, support plates 2 fixedly connected to both sides of the top of the bottom mold 1, a chain 9 fixedly connected inside one side of the support plate 2, a movable plate 4 fixedly connected to one side of the chain 9, a groove 13 opened inside one side of the support plate 2, the outer wall of the movable plate 4 slidably connected to the groove 13, a limit groove 3 opened inside the support plate 2, and sliding rods 12 slidably connected to both sides of the movable plate 4, with brushes 7 fixedly connected to the bottom of the sliding rods 12. A limiting rod 11 is fixedly connected to one side of the outer wall of the slide rod 12. The outer wall of the limiting rod 11 is slidably connected to the inside of the limiting groove 3. A spring 10 is sleeved on the outer wall of the slide rod 12. One end of the spring 10 is fixedly connected to the outer wall of the slide rod 12, and the other end of the spring 10 is fixedly connected to the outer wall of the moving plate 4. A storage assembly is provided on the top of the moving plate 4. The storage assembly includes a storage box 5 and a telescopic guide tube 6. The bottom of the storage box 5 is fixedly connected to the top of the moving plate 4. One end of the telescopic guide tube 6 is fixedly connected to the inside of the storage box 5, and the other end of the telescopic guide tube 6 is fixedly connected to the inside of the brush 7.

[0024] Specifically, before the mold is put into use, the servo motor is started to drive the transmission sprocket group to rotate, which drives the ring chain 9 to be oriented along the toothed track. The chain 9 is connected to the moving plate 4. When the chain 9 rotates, the moving plate 4 will move horizontally above the bottom mold 1. The moving plate 4 is connected to the slide rod 12. When the slide rod 12 moves, the high-density nylon brush 7 at the bottom also moves horizontally. The brush 7 is treated with anti-static agents to avoid static adsorption of the release agent. At the same time, the limiting rod 11 on the side of the slide rod 12 cooperates with the hyperbolic limiting groove 3 on the side wall of the bottom mold 1. When the limiting rod 11 slides along the limiting groove 3, the slide rod 12 descends vertically, allowing the brush 7 to penetrate into the cavity of the bottom mold 1. The release agent is delivered through the telescopic conduit 6 and penetrates the brush bristles. With the movement of the brush 7, a uniform release coating can be formed on the inner wall of the bottom mold 1, effectively reducing the adhesion problem of polyurethane foam during demolding.

[0025] Reference Figure 2 and Figure 3 The bottom mold 1 has receiving boxes 8 fixedly connected to both sides of its top.

[0026] Specifically, receiving boxes 8 are provided on both sides of the bottom mold 1. When applying release agent to the mold, the release agent on the brush 7 may drip due to the suspension of the brush 7, which is inconvenient to clean. The setting of the receiving box 8 can store the dripped release agent inside the receiving box 8 for subsequent unified processing.

[0027] Reference Figure 3 and Figure 4 The bottom of the top cover 14 is fixedly connected to the insert block 20. The bottom mold 1 has a slot 17 inside. The outer wall of the insert block 20 is slidably connected to the inside of the slot 17. A spring plate 19 is fixedly connected to one side inside the insert block 20. A locking block 18 is fixedly connected to one side of the outer wall of the spring plate 19. A locking groove 16 is opened inside the bottom mold 1. The outer wall of the locking block 18 is slidably connected to the inside of the locking groove 16. A sliding column 21 is slidably connected inside the bottom mold 1. A top block 15 is fixedly connected to the top of the sliding column 21. The outer wall of the top block 15 is slidably connected to the inside of the bottom mold 1. A second spring 22 is sleeved on the outer wall of the sliding column 21. One end of the second spring 22 is fixedly connected to the inner wall of the top block 15. The other end of the second spring 22 is fixedly connected to the outer wall of the bottom mold 1.

[0028] Specifically, in the actual use of this mold, when the top cover 14 covers the top of the bottom mold 1, the insert block 20 will be inserted into the slot 17. The locking block 18 on one side of the insert block 20 initially protrudes slightly from the surface of the insert block 20. During the insertion process, the locking block 18 is squeezed by the inclined structure of the inner wall of the bottom mold 1, overcoming the pre-tightening force of the spring plate 19, and retracts into the insert block 20 along the guide groove. The spring plate 19 is made of high-elasticity beryllium bronze and undergoes a special heat treatment process, which can withstand more than 10,000 compression deformations without failure, ensuring the reliable retraction of the locking block 18. After the insert block 20 is fully inserted into the slot 17, the locking block 18, under the elastic restoring force of the spring plate 19, quickly pops out the insert block 20 and accurately locks into the locking block on the outside of the slot 17. In the slot 16, the slot 16 adopts an inverted trapezoidal design, forming a wedge locking structure with the wedge-shaped end face of the locking block 18. Utilizing the inclined plane self-locking principle, the top cover 14 is firmly fixed to the bottom mold 1. When it is necessary to remove the top cover 14, the operator presses the locking block 18 in the slot 16 with a special tool, causing it to overcome the elastic force of the spring sheet 19 and retract the insert block 20. At the same time, the pre-compressed spring 22 inside the bottom mold 1 releases its elastic potential energy, pushing the top block 15 to extend smoothly along the vertical guide post. The surface of the top block 15 is covered with a wear-resistant rubber pad, which can not only avoid scratching the top cover 14, but also provide sufficient ejection force, allowing the top cover 14 to easily detach from the bottom mold 1. The entire disassembly process is efficient and convenient, effectively improving the utilization efficiency of the mold.

[0029] Working principle: Before using the mold, the chain 9 can be driven to move the moving plate 4 inside the slide groove 13, thereby moving the moving plate 4 horizontally above the bottom mold 1. As the moving plate 4 moves, it moves the slide rod 12, causing the brush 7 at the bottom of the slide rod 12 to move horizontally. Simultaneously, the limiting rod 11 fixed on the slide rod 12 slides along the trajectory of the limiting groove 3, causing the slide rod 12 to descend. This pushes the brush 7 into the bottom mold 1, and the release agent stored in the storage box 5 falls into the brush 7 along the telescopic guide tube 6, thus being evenly applied to the inner wall of the bottom mold 1 by the brush 7 to prevent the polyurethane foam from adhering to the inner wall of the bottom mold 1 during demolding. When using the mold, it can be... The top cover 14 covers the top of the bottom mold 1, and the insert 20 at the bottom of the top cover 14 is inserted into the slot 17 at the top of the bottom mold 1. During the insertion of the insert 20, the locking block 18 is squeezed by the inner wall of the bottom mold 1, thus retracting into the insert 20 to facilitate its insertion. After the insert 20 is inserted, the locking block 18 is ejected from the insert 20 due to the force of the spring plate 19 and is locked into the slot 16 on the outside of the slot 17, thus fixing the top cover 14 to the bottom mold 1. When the top cover 14 is removed, the locking block 18 can be pressed through the slot 16, thus retracting the locking block 18 into the insert 20. At the same time, under the force of the spring 22, the top block 15 extends out from the bottom mold 1 and lifts the top cover 14 to facilitate its removal.

[0030] 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 release mold for polyurethane foam molding, comprising a bottom mold (1), characterized by: The bottom mold (1) is provided with a top cover (14). Support plates (2) are fixedly connected to both sides of the top of the bottom mold (1). A chain (9) is fixedly connected inside one side of the support plate (2). A movable plate (4) is fixedly connected to one side of the chain (9). A groove (13) is opened inside one side of the support plate (2). The outer wall of the movable plate (4) is slidably connected inside the groove (13). A limit groove (3) is opened inside the support plate (2). Both sides of the movable plate (4) are slidably connected to the support plate (2). A slide rod (12) is fixedly connected to a brush (7) at its bottom. A limit rod (11) is fixedly connected to one side of the outer wall of the slide rod (12). The outer wall of the limit rod (11) is slidably connected to the inside of the limit groove (3). A spring (10) is sleeved on the outer wall of the slide rod (12). One end of the spring (10) is fixedly connected to the outer wall of the slide rod (12), and the other end of the spring (10) is fixedly connected to the outer wall of the moving plate (4). A storage component is provided on the top of the moving plate (4).

2. The release mold for polyurethane foam forming according to claim 1, characterized by: The storage assembly includes a storage box (5) and a telescopic conduit (6). The bottom of the storage box (5) is fixedly connected to the top of the movable plate (4). One end of the telescopic conduit (6) is fixedly connected to the inside of the storage box (5), and the other end of the telescopic conduit (6) is fixedly connected to the inside of the brush (7).

3. The release mold for polyurethane foam forming according to claim 1, characterized by: The bottom mold (1) has receiving boxes (8) fixedly connected to both sides of its top.

4. The release mold for polyurethane foam forming according to claim 1, characterized by: The bottom of the top cover (14) is fixedly connected to the insert block (20), and the bottom mold (1) has a slot (17) inside.

5. The anti-stick mold for polyurethane foam molding according to claim 4, characterized in that: The outer wall of the insert (20) is slidably connected to the inside of the slot (17), and a spring plate (19) is fixedly connected to one side of the inside of the insert (20). A locking block (18) is fixedly connected to one side of the outer wall of the spring plate (19).

6. The anti-stick mold for polyurethane foam molding according to claim 5, characterized in that: The bottom mold (1) has a slot (16) inside, and the outer wall of the card block (18) is slidably connected to the slot (16).

7. The anti-stick mold for polyurethane foam molding according to claim 1, characterized in that: The bottom mold (1) is slidably connected to a sliding column (21), and a top block (15) is fixedly connected to the top of the sliding column (21). The outer wall of the top block (15) is slidably connected to the inside of the bottom mold (1).

8. The release mold for polyurethane foam forming according to claim 7, characterized by: The outer wall of the sliding column (21) is fitted with a spring (22), one end of which is fixedly connected to the inner wall of the top block (15), and the other end of which is fixedly connected to the outer wall of the bottom mold (1).

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