Die for pultrusion of polyurethane

Abstract

The utility model discloses a mould for polyurethane pultrusion, which comprises an upper mould cover, a lower mould cover, a fixing piece, a mounting bin, a mould core, a liquid injection pipe and a liquid injection hole, screw holes B are arranged on the upper mould cover and the lower mould cover, screw holes A are arranged on the fixing piece, screws are arranged in the screw holes A and the screw holes B, and the mounting bin is arranged on the upper mould cover and the lower mould cover. The upper mold cover and the lower mold cover are fixedly formed into a mounting bin, a mold core is slidably mounted in the mounting bin, connecting grooves are formed in the upper mold cover and the lower mold cover, connecting blocks are mounted on the mold core, bolt holes B are formed in the upper mold cover and the lower mold cover, bolt holes A are formed in the connecting blocks, and the upper mold cover and the lower mold cover are fixedly mounted on the mounting bin. And bolts are mounted in the bolt holes A and the bolt holes B. According to the polyurethane pultrusion mold, the production requirements of different products are met by replacing the mold cores in different shapes, the problem that the whole mold needs to be replaced when different products are produced is solved, and the polyurethane pultrusion mold is more flexible and convenient to use.

Description

Technical Field

[0001] The utility model relates to the field related to polyurethane molding dies, and particularly to a die for polyurethane pultrusion molding. Background Technique

[0002] Polyurethane is a kind of macromolecular compound, and there are two main categories of polyester type and polyether type; they can be made into polyurethane plastics, polyurethane fibers, polyurethane rubbers and elastomers. Soft polyurethane mainly has a thermoplastic linear structure, which has better stability, chemical resistance, resilience and mechanical properties than PVC foaming materials, has smaller compression deformation, and has good heat insulation, sound insulation, earthquake resistance and anti-toxic properties. In the field of manufacturing polyurethane pultruded profiles, existing manufacturing dies are mostly made through polyurethane pultrusion molding dies.

[0003] The following deficiencies will occur when the existing device is used: when the polyurethane pultrusion die is used, the shape of the die is mostly fixed, and the whole die needs to be replaced when producing different products, which is not flexible and convenient to use. Content of the Utility Model

[0004] The purpose of the utility model is to provide a die for polyurethane pultrusion molding, so as to solve the problems raised in the above background technique.

[0005] To achieve the above object, the present utility model provides the following technical solutions: A mold for polyurethane pultrusion molding, comprising an upper mold cover, a lower mold cover, a fixing piece, an installation chamber, a mold core, a liquid injection pipe, and a liquid injection hole. The upper mold cover and the lower mold cover are provided with screw holes B, and the fixing piece is provided with screw holes A. Screws are installed in the screw holes A and B. The upper mold cover and the lower mold cover are fixed to form an installation chamber. The mold core is slidably installed in the installation chamber. The upper mold cover and the lower mold cover are provided with connecting grooves, and the mold core is provided with connecting blocks. The upper mold cover and the lower mold cover are provided with bolt holes B, and the connecting blocks are provided with bolt holes A. Bolts are installed in the bolt holes A and B. After the upper mold cover and the lower mold cover are aligned together through the auxiliary sliders and the auxiliary chutes, the screw holes A opened on the fixing piece are aligned with the screw holes B opened on the upper mold cover and the lower mold cover, and the upper mold cover and the lower mold cover are fixed to form an installation chamber with the cooperation of the screws. The mold core is slidably inserted into the installation chamber from one end of the installation chamber, and is slidably connected with the connecting grooves opened on the upper mold cover and the lower mold cover with the cooperation of the connecting blocks installed on the mold core. After the mold core slides into the installation chamber, the bolt holes A opened on the connecting blocks are aligned with the bolt holes B opened on the upper mold cover and the lower mold cover, and then the mold core is fixed by bolts. At this time, the pipeline hole is aligned with the liquid injection hole in the vertical direction. The liquid injection pipe is inserted into the pipeline hole and rotated. The external thread provided on the outer wall of the liquid injection pipe is threadedly connected with the internal thread provided on the hole wall of the liquid injection hole. One end of the liquid injection pipe is connected to the chamber in the mold core, and the other end of the liquid injection pipe is connected to a polyurethane injection machine to inject polyurethane into the mold core. By replacing the mold cores with different shapes, the production requirements of different products can be met, avoiding the problem of replacing the entire mold when producing different products, and making the use of the polyurethane pultrusion molding mold more flexible and convenient.

[0006] In a further embodiment, the upper mold cover is provided with a pipeline hole, the mold core is provided with a liquid injection hole, the liquid injection pipe is slidably connected with the pipeline hole, an external thread is provided on the outer wall of one end of the liquid injection pipe, and an internal thread is provided on the hole wall of the liquid injection hole. The pipeline hole is aligned with the liquid injection hole in the vertical direction. The liquid injection pipe is inserted into the pipeline hole and rotated. The external thread provided on the outer wall of the liquid injection pipe is threadedly connected with the internal thread provided on the hole wall of the liquid injection hole. One end of the liquid injection pipe is connected to the chamber in the mold core, and the other end of the liquid injection pipe is connected to a polyurethane injection machine to inject polyurethane into the mold core.

[0007] In a further embodiment, auxiliary sliders are installed on the upper mold cover and the lower mold cover, auxiliary chutes are opened on the upper mold cover and the lower mold cover, the auxiliary chutes are fitted with the auxiliary sliders, and the upper mold cover and the lower mold cover are aligned together through the auxiliary sliders and the auxiliary chutes, which is convenient for the docking and assembly between the upper mold cover and the lower mold cover.

[0008] In a further embodiment, the connecting grooves formed on the upper mold cover and the lower mold cover are arranged along the Y-axis length of the mold cover, and the connecting blocks installed on the mold core are arranged along the Y-axis length of the mold core. The lengths of the connecting grooves and the connecting blocks change with the lengths of the upper mold cover and the lower mold cover.

[0009] In a further embodiment, a plurality of fixing pieces on the upper mold cover and the lower mold cover can be arranged according to the Y-axis length, and a plurality of bolt holes B formed on the upper mold cover and the lower mold cover can be arranged according to the Y-axis length. According to the change in the lengths of the upper mold cover and the lower mold cover, a plurality of fixing pieces and bolt holes B can be installed.

[0010] In a further embodiment, the injection pipe is a hollow pipe. One end of the injection pipe is connected to a polyurethane injection machine. The injection pipe is a hollow pipe, and one end is connected to a polyurethane injection machine to inject polyurethane into the cavity of the mold core.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: By replacing mold cores with different shapes, the production requirements of different products can be met, avoiding the problem of replacing the entire mold when producing different products, and making the use of the polyurethane pultrusion mold more flexible and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0013] Figure 2 is a sectional structural schematic diagram of the present utility model;

[0014] Figure 3 is an enlarged schematic diagram of the injection pipe structure of the present utility model;

[0015] Figure 4 is a side structural schematic diagram of the present utility model.

[0016] In the figure: 1. Upper mold cover; 2. Lower mold cover; 3. Auxiliary slider; 4. Auxiliary chute; 5. Fixing piece; 6. Screw; 7. Screw hole A; 8. Screw hole B; 9. Installation bin; 10. Mold core; 11. Connecting groove; 12. Connecting block; 13. Bolt hole A; 14. Bolt hole B; 15. Bolt; 16. Injection pipe; 17. Pipe hole; 18. Injection hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0018] Please refer to Figures 1-4, including an upper mold cover 1, a lower mold cover 2, a fixing piece 5, an installation chamber 9, a mold core 10, a liquid injection pipe 16 and a liquid injection hole 18. Screw holes B8 are formed on the upper mold cover 1 and the lower mold cover 2, screw hole A7 is formed on the fixing piece 5, and a screw 6 is installed in the screw hole A7 and the screw hole B8. The upper mold cover 1 and the lower mold cover 2 are fixed to form an installation chamber 9. The mold core 10 is slidably installed in the installation chamber 9. Connecting grooves 11 are formed on the upper mold cover 1 and the lower mold cover 2. A connecting block 12 is installed on the mold core 10. Bolt holes B14 are formed on the upper mold cover 1 and the lower mold cover 2. Bolt hole A13 is formed on the connecting block 12, and a bolt 15 is installed in the bolt hole A13 and the bolt hole B14. After the upper mold cover 1 and the lower mold cover 2 are aligned together through the auxiliary slider 3 and the auxiliary chute 4, the screw hole A7 formed on the fixing piece 5 is aligned with the screw holes B8 formed on the upper mold cover 1 and the lower mold cover 2, and the upper mold cover 1 and the lower mold cover 2 are fixed to form the installation chamber 9 by means of the screw 6. The mold core 10 is slidably inserted into the installation chamber 9 from one end of the installation chamber 9, and is slidably connected with the connecting grooves 11 formed on the upper mold cover 1 and the lower mold cover 2 by means of the connecting block 12 installed on the mold core 10. After the mold core 10 slides into the installation chamber 9, the bolt hole A13 formed on the connecting block 12 is aligned with the bolt holes B14 formed on the upper mold cover 1 and the lower mold cover 2, and then the mold core 10 is fixed by means of the bolt 15. At this time, the pipeline hole 17 is aligned with the liquid injection hole 18 in the vertical direction. The liquid injection pipe 16 is inserted into the pipeline hole 17 and the liquid injection pipe 16 is rotated. The external thread provided on the outer wall of the liquid injection pipe 16 is threadedly connected with the internal thread provided on the hole wall of the liquid injection hole 18. One end of the liquid injection pipe 16 is connected to the chamber in the mold core 10, and the other end of the liquid injection pipe 16 is connected to a polyurethane injection machine to inject polyurethane into the mold core 10. By replacing mold cores with different shapes, the production requirements of different products can be met, avoiding the problem of needing to replace the entire mold when producing different products, and making the use of the polyurethane pultrusion mold more flexible and convenient.

[0019] Please refer to Figures 1-4, a pipeline hole 17 is provided on the upper mold cover 1, a liquid injection hole 18 is provided on the mold core 10, the liquid injection pipe 16 is slidably connected to the pipeline hole 17, an external thread is provided on the outer wall of one end of the liquid injection pipe 16, and an internal thread is provided on the hole wall of the liquid injection hole 18. The pipeline hole 17 is aligned with the liquid injection hole 18 in the vertical direction. Insert the liquid injection pipe 16 into the pipeline hole 17 and rotate the liquid injection pipe 16. The external thread provided on the outer wall of the liquid injection pipe 16 is threadedly connected to the internal thread provided on the hole wall of the liquid injection hole 18. One end of the liquid injection pipe 16 is connected to the chamber in the mold core 10. The other end of the liquid injection pipe 16 is connected to a polyurethane injection machine to inject polyurethane into the mold core 10. Auxiliary sliders 3 are installed on the upper mold cover 1 and the lower mold cover 2. Auxiliary sliding grooves 4 are provided on the upper mold cover 1 and the lower mold cover 2. The auxiliary sliding grooves 4 fit with the auxiliary sliders 3. The upper mold cover 1 and the lower mold cover 2 are aligned together through the auxiliary sliders 3 and the auxiliary sliding grooves 4, which facilitates the docking and assembly between the upper mold cover 1 and the lower mold cover 2.

[0020] Please refer to Figures 1-4 , the connecting grooves 11 provided on the upper mold cover 1 and the lower mold cover 2 are arranged along the length of the mold cover in the Y-axis direction. The connecting blocks 12 installed on the mold core 10 are arranged along the length of the mold core 10 in the Y-axis direction. The lengths of the connecting grooves 11 and the connecting blocks 12 change with the lengths of the upper mold cover 1 and the lower mold cover 2. Multiple fixing pieces 5 can be provided on the upper mold cover 1 and the lower mold cover 2 according to the length of the Y-axis. Multiple bolt holes B14 provided on the upper mold cover 1 and the lower mold cover 2 can be provided according to the length of the Y-axis. According to the change in the lengths of the upper mold cover 1 and the lower mold cover 2, multiple fixing pieces 5 and bolt holes B14 can be installed. The liquid injection pipe 16 is a hollow pipe. One end of the liquid injection pipe 16 is connected to a polyurethane injection machine. The liquid injection pipe 16 is a hollow pipe, and one end is connected to a polyurethane injection machine to inject polyurethane into the mold cavity of the mold core 10.

[0021] Working principle: After the upper mold cover 1 and the lower mold cover 2 are aligned together through the auxiliary slider 3 and the auxiliary chute 4, align the screw hole A7 opened on the fixing piece 5 with the screw hole B8 opened on the upper mold cover 1 and the lower mold cover 2, and use the screw 6 to fix the upper mold cover 1 and the lower mold cover 2 to form the installation bin 9. Slide the mold core 10 into the installation bin 9 from one end of the installation bin 9, and cooperate with the sliding connection between the connecting block 12 installed on the mold core 10 and the connecting groove 11 opened on the upper mold cover 1 and the lower mold cover 2. After the mold core 10 slides into the installation bin 9, align the bolt hole A13 opened on the connecting block 12 with the bolt hole B14 opened on the upper mold cover 1 and the lower mold cover 2, and then fix the mold core 10 through the bolt 15. At this time, the pipeline hole 17 is aligned with the injection hole 18 in the vertical direction. Insert the injection pipe 16 into the pipeline hole 17 and rotate the injection pipe 16. The external thread provided on the outer wall of the injection pipe 16 is threadedly connected with the internal thread provided on the hole wall of the injection hole 18. One end of the injection pipe 16 is connected to the chamber in the mold core 10, and the other end of the injection pipe 16 is connected to the polyurethane injection machine to inject polyurethane into the mold core 10. By replacing the mold cores with different shapes, the production requirements of different products can be met, avoiding the problem of needing to replace the entire mold when producing different products, and making the use of the polyurethane pultrusion mold more flexible and convenient.

[0022] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A mold for polyurethane pultrusion, comprising an upper mold cover (1), a lower mold cover (2), a fixing piece (5), an installation bin (9), a mold core (10), a liquid injection pipe (16) and a liquid injection hole (18), characterized in that: The upper mold cover (1) and the lower mold cover (2) are provided with screw holes B (8), the fixing piece (5) is provided with screw holes A (7), screws (6) are installed in the screw holes A (7) and the screw holes B (8), the upper mold cover (1) and the lower mold cover (2) are fixedly formed with an installation bin (9), a mold core (10) is slidably installed in the installation bin (9), the upper mold cover (1) and the lower mold cover (2) are provided with connection grooves (11), a connection block (12) is installed on the mold core (10), the upper mold cover (1) and the lower mold cover (2) are provided with bolt holes B (14), bolt holes A (13) are provided in the connection block (12), and bolts (15) are installed in the bolt holes A (13) and the bolt holes B (14).

2. The mold for polyurethane pultrusion according to claim 1, characterized in that: The upper mold cover (1) is provided with a pipeline hole (17), the mold core (10) is provided with a liquid injection hole (18), the liquid injection pipe (16) is slidably connected to the pipeline hole (17), an external thread is provided on the outer wall of one end of the liquid injection pipe (16), and an internal thread is provided on the hole wall of the liquid injection hole (18).

3. A mold for polyurethane pultrusion according to claim 1, characterized in that: Auxiliary sliders (3) are installed on the upper mold cover (1) and the lower mold cover (2), auxiliary sliding grooves (4) are provided on the upper mold cover (1) and the lower mold cover (2), and the auxiliary sliding grooves (4) are fitted with the auxiliary sliders (3).

4. A mold for polyurethane pultrusion according to claim 1, characterized in that: The connection grooves (11) provided on the upper mold cover (1) and the lower mold cover (2) are arranged along the Y-axis length of the mold cover, and the connection blocks (12) installed on the mold core (10) are arranged along the Y-axis length of the mold core (10).

5. A mold for polyurethane pultrusion according to claim 1, characterized in that: The fixing pieces (5) on the upper mold cover (1) and the lower mold cover (2) can be provided in multiple numbers according to the Y-axis length, and the bolt holes B (14) provided on the upper mold cover (1) and the lower mold cover (2) can be provided in multiple numbers according to the Y-axis length.

6. The mold for polyurethane pultrusion according to claim 1, characterized in that: The liquid injection pipe (16) is a hollow pipeline, and one end of the liquid injection pipe (16) is connected to a polyurethane injection machine.

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