Pultrusion mold

Abstract

The pultrusion mold comprises a mold assembly, a first heat insulation piece and a second heat insulation piece, the mold assembly is provided with a mold cavity, a first heat insulation groove and a second heat insulation groove, and the mold cavity comprises a glue injection section, a transition section and a heating section which are sequentially arranged in the length direction of the mold cavity. The first heat insulation groove and the second heat insulation groove are oppositely formed in the two sides of the transition section, a first interval part is arranged between the first heat insulation groove and the transition section, and a second interval part is arranged between the second heat insulation groove and the transition section; the first heat insulation piece is arranged in the first heat insulation groove, and the second heat insulation piece is arranged in the second heat insulation groove. According to the pultrusion mold disclosed by the embodiment of the utility model, the first heat insulation piece and the second heat insulation piece can play a heat insulation role between the heating section and the injected glue, and meanwhile, the cavity wall of the mold cavity through which a pultrusion product passes can be kept continuous, so that the phenomenon of polyurethane curing residue caused by discontinuous cavity wall of the mold cavity is avoided, and the product performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pultrusion equipment, and particularly relates to a pultrusion die. Background Art

[0002] The polyurethane pultrusion die is an important tool for manufacturing polyurethane pultruded products, which includes a glue injection part and a heating part. The glue injection part has a glue injection hole for injecting polyurethane. Fibers (such as glass fibers and carbon fibers) keep moving in the die. During the moving process, the fibers are first infiltrated with polyurethane resin in the glue injection part, and then are subjected to high-temperature curing and forming through the heating part. After demoulding, polyurethane pultruded products can be formed.

[0003] In the related art, the pultrusion die for polyurethane pultruded products is a split type, that is, the glue injection part and the heating part are separately arranged, and an insulating board such as a rock wool board is used to isolate them between the two, so that the cavity wall of the die cavity is discontinuous. This leads to the residual curing of polyurethane easily occurring in the discontinuous area of the die cavity, and further leads to quality problems such as defects and unevenness on the product surface. At the same time, the residual curing of polyurethane will increase the friction force during the fiber moving process, resulting in an increase in the traction force, and further leading to a decrease in the performance of the product such as strength and toughness. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems in the related art to a certain extent.

[0005] Therefore, an embodiment of the utility model provides a pultrusion die. The first heat insulation part and the second heat insulation part can play a heat insulation role between the heating section and the glue injection, and at the same time, the cavity wall of the die cavity for the pultruded product to pass through can be kept continuous, so as to avoid the phenomenon of residual curing of polyurethane caused by the discontinuity of the cavity wall of the die cavity and improve the product performance.

[0006] The pultrusion die of the embodiment of the utility model includes a die assembly, a first heat insulation part and a second heat insulation part. The die assembly has a die cavity, a first heat insulation groove and a second heat insulation groove. The die cavity includes a glue injection section, a transition section and a heating section arranged in sequence along the length direction of the die cavity. The first heat insulation groove and the second heat insulation groove are relatively arranged on both sides of the transition section. There is a first interval part between the first heat insulation groove and the transition section, and a second interval part between the second heat insulation groove and the transition section. The first heat insulation part is arranged in the first heat insulation groove, and the second heat insulation part is arranged in the second heat insulation groove.

[0007] In some embodiments, the die assembly includes a first die and a second die. The first die has a first half cavity, and the second die has a second half cavity. The second die is connected to the first die to form the die cavity through the first half cavity and the second half cavity.

[0008] In some embodiments, the first mold and the second mold are detachably connected.

[0009] In some embodiments, the first mold includes a first core mold, a first glue injection outer mold, and a first heating outer mold. The first glue injection outer mold and the first heating outer mold are arranged at intervals along the length direction of the mold cavity and are both connected to the first core mold. A first heat insulation groove is formed between the first glue injection outer mold and the first heating outer mold. The second mold includes a second core mold, a second glue injection outer mold, and a second heating outer mold. The second core mold is connected to the first core mold to enclose the mold cavity. The second glue injection outer mold and the second heating outer mold are arranged at intervals along the length direction of the mold cavity and are both connected to the second core mold. A second heat insulation groove is formed between the second glue injection outer mold and the second heating outer mold.

[0010] In some embodiments, the first mold further includes a first connecting plate, and the first connecting plate is connected to the first glue injection outer mold and the first heating outer mold; and / or the second mold further includes a second connecting plate, and the second connecting plate is connected to the second glue injection outer mold and the second heating outer mold.

[0011] In some embodiments, the first connecting plate is arranged on a side of the first glue injection outer mold away from the first core mold. The first mold further includes a first heat insulation sheet, and the first heat insulation sheet is arranged between the first connecting plate and the first glue injection outer mold; and / or the first heat insulation sheet is arranged between the first connecting plate and the first heating outer mold.

[0012] In some embodiments, the second connecting plate is arranged on a side of the second glue injection outer mold away from the second core mold. The second mold further includes a second heat insulation sheet, and the second heat insulation sheet is arranged between the second connecting plate and the second glue injection outer mold; and / or the second heat insulation sheet is arranged between the second connecting plate and the second glue injection outer mold.

[0013] In some embodiments, the glue injection section includes a communication section and an infiltration section arranged in sequence. The infiltration section is arranged between the communication section and the heating section, and the cross-section of the infiltration section first increases and then decreases from the communication section to the heating section. The mold assembly has a glue injection hole, and the glue injection hole communicates with the infiltration section.

[0014] In some embodiments, at least one of the first connecting plate and the second connecting plate is a bakelite board.

[0015] In some embodiments, at least one of the first heat insulation member and the second heat insulation member is made of ceramic material.

[0016] In the pultrusion die of the embodiment of the present utility model, in terms of the length direction of the die cavity, both the first heat insulation member and the second heat insulation member are arranged between the heating section and the glue injection section, and can block the heat transfer from the heating section to the glue injection section. At the same time, there is a first spacing portion between the second heat insulation groove and the transition section, and there is a second spacing portion between the second heat insulation groove and the transition section, that is, the first heat insulation groove and the second heat insulation groove do not completely partition the die assembly, which can ensure the continuity and integrity of the die cavity along its own length direction, thereby avoiding the phenomenon of residual polyurethane curing caused by the discontinuity of the cavity wall of the die cavity, reducing the probability of quality problems such as surface defects of the product, and improving the performance such as strength and toughness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is a schematic three-dimensional structure diagram of a pultrusion die according to an embodiment of the present utility model.

[0018] Figure 2 FIG. is a schematic structural diagram of a pultrusion die according to an embodiment of the present utility model from another angle.

[0019] Figure 3 FIG. is Figure 2 a sectional view taken along line A-A in FIG.

[0020] Figure 4 FIG. is Figure 3 an enlarged schematic view at position B in FIG.

[0021] Figure 5 FIG. is an exploded schematic view of a pultrusion die according to an embodiment of the present utility model.

[0022] REFERENCE NUMERALS:

[0023] 100, pultrusion die;

[0024] 1, first die; 11, first heat insulation groove; 12, first core mold; 13, first glue injection outer mold; 14, first heating outer mold; 15, first connecting plate; 16, glue injection hole;

[0025] 2, second die; 21, second heat insulation groove; 22, second core mold; 23, second glue injection outer mold; 24, second heating outer mold; 25, second connecting plate;

[0026] 3, die cavity; 31, glue injection section; 311, communication section; 312, infiltration section; 32, transition section; 33, heating section;

[0027] 41, first heat insulation member; 42, second heat insulation member; 43, first heat insulation sheet; 44, second heat insulation sheet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0029] As Figures 1 to 4 shown, the pultrusion die 100 of the embodiment of the present utility model includes a die assembly, a first heat insulation member 41 and a second heat insulation member 42. The die assembly has a die cavity 3, a first heat insulation groove 11 and a second heat insulation groove 21. The die cavity 3 includes a glue injection section 31, a transition section 32 and a heating section 33 arranged in sequence along the length direction of the die cavity 3. The first heat insulation groove 11 and the second heat insulation groove 21 are relatively arranged on both sides of the transition section 32. There is a first spacing portion between the first heat insulation groove 11 and the transition section 32, and a second spacing portion between the second heat insulation groove 21 and the transition section 32; the first heat insulation member 41 is arranged in the first heat insulation groove 11, and the second heat insulation member 42 is arranged in the second heat insulation groove 21.

[0030] For the pultrusion die 100 of the embodiment of the present utility model, in terms of the length direction of the die cavity 3, both the first heat insulation member 41 and the second heat insulation member 42 are arranged between the heating section 33 and the glue injection section 31, which can block the heat of the heating section 33 from being transferred to the glue injection section 31; at the same time, there is a first spacing portion between the second heat insulation groove 21 and the transition section 32, and a second spacing portion between the second heat insulation groove 21 and the transition section 32, that is, the first heat insulation groove 11 and the second heat insulation groove 21 do not completely cut off the die assembly, which can ensure the continuity and integrity of the die cavity 3 along its own length direction, thereby avoiding the phenomenon of residual polyurethane curing caused by the discontinuity of the cavity wall of the die cavity 3, reducing the probability of quality problems such as defects on the product surface, and improving the strength, toughness and other properties of the product.

[0031] As an example, as Figure 1 and Figure 2 shown, the pultrusion die 100 is in the shape of a long rectangular body as a whole, and the die cavity 3 runs through along its length direction; wherein, heating devices are respectively arranged in the areas corresponding to the heating section 33 on both sides of the die assembly for heating the heating section 33 to realize resin curing. The transition section 32 is arranged between the glue injection section 31 and the heating section 33, and the first spacing portion and the second spacing portion are respectively formed on both side walls of the transition section 32. The fiber passes through the glue injection section 31, the transition section 32 and the heating section 33 in sequence, and can realize the combination with the polyurethane resin, thereby forming a polyurethane pultruded product.

[0032] In some embodiments, at least one of the first heat insulation member 41 and the second heat insulation member 42 is made of ceramic material.

[0033] The ceramic heat insulation material has a porous structure, which can effectively reduce the thermal conductivity of the material, prevent heat transfer, and achieve a good heat insulation effect. At the same time, the ceramic material can maintain stable performance in a high-temperature environment, thereby reducing the risk of deformation of the first heat insulation member 41 and the second heat insulation member 42 in a high-temperature environment, which may cause damage to the pultrusion mold 100.

[0034] In some embodiments, the mold assembly includes a first mold 1 and a second mold 2. The first mold 1 has a first half cavity, and the second mold 2 has a second half cavity. The second mold 2 is connected to the first mold 1 to form a mold cavity 3 through the first half cavity and the second half cavity.

[0035] Dividing the mold assembly into the first mold 1 and the second mold 2 makes the design and production of the pultrusion mold 100 simpler, thereby reducing the production cost.

[0036] In some embodiments, the first mold 1 and the second mold 2 are detachably connected.

[0037] When the pultrusion mold 100 fails, only the damaged part can be replaced, thereby reducing the maintenance cost.

[0038] In some embodiments, as Figure 5 shown, the first mold 1 includes a first core mold 12, a first glue injection outer mold 13, and a first heating outer mold 14. The first glue injection outer mold 13 and the first heating outer mold 14 are arranged at intervals along the length direction of the mold cavity 3 and are both connected to the first core mold 12. A first heat insulation groove 11 is formed between the first glue injection outer mold 13 and the first heating outer mold 14. The second mold 2 includes a second core mold 22, a second glue injection outer mold 23, and a second heating outer mold 24. The second core mold 22 is connected to the first core mold 12 and encloses the mold cavity 3. The second glue injection outer mold 23 and the second heating outer mold 24 are arranged at intervals along the length direction of the mold cavity 3 and are both connected to the second core mold 22. A second heat insulation groove 21 is formed between the second glue injection outer mold 23 and the second heating outer mold 24.

[0039] With the above settings, both the first mold 1 and the second mold 2 are composed of multiple components, and the production and processing of each component are more convenient. Thereby, the processing and use flexibility of the pultrusion mold 100 can be further improved, and the production cost and maintenance cost can be reduced.

[0040] Optionally, the first core mold 12 and the second core mold 22 are made of high-hardness alloy steel.

[0041] Optionally, the first glue injection outer mold 13 and the first heating outer mold 14 are made of P20 plastic mold steel.

[0042] As an example, as Figure 1 and Figure 5As shown, the first core mold 12 has the above-mentioned first half cavity, and the second core mold 22 has the above-mentioned second half cavity. The first core mold 12 has two rows of first connection holes, which are arranged on both sides of the first half cavity. The first connection holes in the same row are evenly arranged along the length direction of the first core mold 12. The structure of the second core mold 22 is the same as that of the first core mold 12, that is, the second core mold 22 also has two rows of first connection holes. Aligning the first core mold 12 with the second core mold 22 can make the two rows of first connection holes of the first core mold 12 align with the two rows of first connection holes of the second core mold 22, and the first half cavity and the second half cavity form the above-mentioned mold cavity 3.

[0043] The first glue injection outer mold 13 and the second glue injection outer mold 23 are symmetrically arranged on both sides of the mold cavity 3. The first glue injection outer mold 13 has two rows of second connection holes evenly arranged along its length direction. The structure of the second glue injection outer mold 23 is the same as that of the first glue injection outer mold 13, that is, the second glue injection outer mold 23 also has two rows of second connection holes.

[0044] The first heating outer mold 14 and the second heating outer mold 24 are symmetrically arranged on both sides of the mold cavity 3. The first heating outer mold 14 has two rows of third connection holes evenly arranged along its length direction. The structure of the second heating outer mold 24 is the same as that of the first heating outer mold 14, that is, the second heating outer mold 24 also has two rows of third connection holes.

[0045] After aligning the first core mold 12 and the second core mold 22, place the first glue injection outer mold 13 and the second glue injection outer mold 23 on both sides of the first core mold 12 and the second core mold 22 respectively, and align the second connection holes with some of the first connection holes. Thus, the first core mold 12, the second core mold 22, the first glue injection outer mold 13, and the second glue injection outer mold 23 can be connected by a plurality of bolts. Subsequently, place the first heating outer mold 14 and the second heating outer mold 24 on both sides of the first core mold 12 and the second core mold 22 respectively, and align the third connection holes with the remaining first connection holes. Thus, the first core mold 12, the second core mold 22, the first heating outer mold 14, and the second heating outer mold 24 can be connected by a plurality of bolts.

[0046] Among them, a first heat insulation groove 11 is formed between the first glue injection outer mold 13 and the first heating outer mold 14, and a second heat insulation groove 21 is formed between the second glue injection outer mold 23 and the second heating outer mold 24.

[0047] In addition, both the first core mold 12 and the second core mold 22 have two first mounting holes, which are arranged in a staggered manner with respect to the first connection holes. The first mounting holes on the first core mold 12 are arranged in the first heat insulation groove 11, and the first mounting holes on the second core mold 22 are arranged in the second heat insulation groove 21. Both the first heat insulation member 41 and the second heat insulation member 42 are in the shape of a rectangular body. The first heat insulation member 41 has two second mounting holes respectively arranged on both sides of the mold cavity 3. The second heat insulation member 42 has the same structure as the first heat insulation member 41, that is, the second heat insulation member 42 also has two second mounting holes, and the first mounting holes and the second mounting holes are matched.

[0048] Place the first heat insulation member 41 in the first heat insulation groove 11, place the second heat insulation member 42 in the second heat insulation groove 21, align the second mounting holes with the first mounting holes, and the first heat insulation member 41, the second heat insulation member 42, the first core mold 12 and the second core mold 22 can be connected by bolts; thus, the preliminary assembly of the pultrusion mold 100 can be realized.

[0049] It can be understood that for the assembly sequence of components such as the first glue injection outer mold 13, the second glue injection outer mold 23, the first heating outer mold 14, the second heating outer mold 24, the first heat insulation member 41 and the second heat insulation member 42 with the first core mold 12 and the second core mold 22, it can be adjusted adaptively according to the actual installation.

[0050] In some embodiments, the first mold 1 further includes a first connecting plate 15, and the first connecting plate 15 is connected to the first glue injection outer mold 13 and the first heating outer mold 14; and / or the second mold 2 further includes a second connecting plate 25, and the second connecting plate 25 is connected to the second glue injection outer mold 23 and the second heating outer mold 24.

[0051] The first glue injection outer mold 13 and the first heating outer mold 14 are connected by the first connecting plate 15, which can improve the connection strength between the first glue injection outer mold 13 and the first heating outer mold 14. At the same time, the first connecting plate 15 can also limit the first heat insulation member 41. Similarly, the second glue injection outer mold 23 and the second heating outer mold 24 are connected by the second connecting plate 25, which can improve the connection strength between the second glue injection outer mold 23 and the second heating outer mold 24. At the same time, the second connecting plate 25 can also limit the second heat insulation member 42, thereby improving the overall stability of the pultrusion mold 100.

[0052] In some embodiments, the first connecting plate 15 is arranged on the side of the first glue injection outer mold 13 away from the first core mold 12. The first mold 1 further includes a first heat insulation sheet 43, and the first heat insulation sheet 43 is arranged between the first connecting plate 15 and the first glue injection outer mold 13; and / or the first heat insulation sheet 43 is arranged between the first connecting plate 15 and the first heating outer mold 14.

[0053] By providing the first heat insulation sheet 43, the heat of the first heating outer mold 14 can be blocked from being transferred to the first glue injection outer mold 13 through the first connecting plate 15, thereby blocking the heat of the heating section 33 from being transferred to the glue injection section 31.

[0054] Optionally, as Figure 4 and Figure 5 shown, the number of the first heat insulation sheets 43 is two, one of the first heat insulation sheets 43 is arranged between the first connecting plate 15 and the first glue injection outer mold 13, and the other first heat insulation sheet 43 is arranged between the first connecting plate 15 and the first heating outer mold 14.

[0055] Thus, the heat transfer between the first connecting plate 15 and the first heating outer mold 14 is initially blocked, and the heat between the first connecting plate 15 and the first glue injection outer mold 13 is blocked again, so as to achieve a better heat insulation effect.

[0056] In some embodiments, the second connecting plate 25 is arranged on the side of the second glue injection outer mold 23 away from the second core mold 22. The second mold 2 further includes a second heat insulation sheet 44, and the second heat insulation sheet 44 is arranged between the second connecting plate 25 and the second glue injection outer mold 23; and / or the second heat insulation sheet 44 is arranged between the second connecting plate 25 and the second glue injection outer mold 23.

[0057] Optionally, as Figure 4 and Figure 5 shown, the number of the second heat insulation sheets 44 is two, one of the second heat insulation sheets 44 is arranged between the second connecting plate 25 and the second glue injection outer mold 23, and the other second heat insulation sheet 44 is arranged between the second connecting plate 25 and the second heating outer mold 24.

[0058] Thus, the heat transfer between the second connecting plate 25 and the second heating outer mold 24 is initially blocked, and the heat transfer between the second connecting plate 25 and the second glue injection outer mold 23 is blocked twice, so as to achieve a better heat insulation effect.

[0059] In some embodiments, at least one of the first connecting plate 15 and the second connecting plate 25 is a bakelite board.

[0060] The bakelite board has a low thermal conductivity, and has the characteristics of high temperature resistance and anti-static, which can further improve the heat insulation performance of the first heat insulation sheet 43 and the second heat insulation sheet 44.

[0061] In some embodiments, as Figure 4 and Figure 5 shown, the glue injection section 31 includes a communicating section 311 and an infiltration section 312 arranged in sequence. The infiltration section 312 is arranged between the communicating section 311 and the heating section 33, and the cross-section of the infiltration section 312 increases first and then decreases from the communicating section 311 to the heating section 33; the mold assembly has a glue injection hole 16, and the glue injection hole 16 is communicated with the infiltration section 312.

[0062] Due to the relatively large cross-section of the infiltration section 312, when the fiber passes through the infiltration section 312, the polyurethane resin can completely wrap the fiber, enabling the fiber to be in full contact with the polyurethane resin and be evenly mixed, improving the bonding force between the fiber and the resin, thereby enhancing the mechanical properties of the polyurethane pultruded product.

[0063] As an example, as Figure 4 shown, the infiltration section 312 includes a first part and a second part arranged in sequence from the communication section 311 to the heating section 33. The cross-section of the first part gradually increases from the communication section 311 to the heating section 33, and the cross-section of the second part gradually decreases from the communication section 311 to the heating section 33; the glue injection hole 16 communicates with the connection position of the first part and the second part, and the glue injection hole 16 sequentially penetrates through the first glue injection outer mold 13 and the first core mold 12. Through the glue injection hole 16, polyurethane resin can be injected into the infiltration section 312.

[0064] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present invention. Any changes, modifications, substitutions, and variations made by those of ordinary skill in the art to the above embodiments are within the protection scope of the present invention.

Claims

1. A pultrusion die (100), characterized in that: include: A mold assembly, the mold assembly comprising a mold cavity (3), a first heat insulation groove (11) and a second heat insulation groove (21), the mold cavity (3) comprising a glue injection section (31), a transition section (32) and a heating section (33) arranged in sequence along the length direction of the mold cavity (3), the first heat insulation groove (11) and the second heat insulation groove (21) being arranged relatively on both sides of the transition section (32), a first spacer being provided between the first heat insulation groove (11) and the transition section (32), and a second spacer being provided between the second heat insulation groove (21) and the transition section (32); A first heat insulating member (41) and a second heat insulating member (42), wherein the first heat insulating member (41) is arranged in the first heat insulating groove (11), and the second heat insulating member (42) is arranged in the second heat insulating groove (21).

2. The pultrusion die (100) according to claim 1, characterized in that: The mold assembly comprises a first mold (1) and a second mold (2), wherein the first mold (1) has a first half cavity, the second mold (2) has a second half cavity, and the second mold (2) is connected to the first mold (1) to form the mold cavity (3) through the first half cavity and the second half cavity.

3. The pultrusion die (100) according to claim 2, characterized in that: The first mold (1) and the second mold (2) are detachably connected.

4. The pultrusion die (100) according to claim 2, characterized in that: The first mold (1) comprises a first core mold (12), a first glue injection outer mold (13) and a first heating outer mold (14); the first glue injection outer mold (13) and the first heating outer mold (14) are arranged at intervals along the length direction of the mold cavity (3) and are both connected to the first core mold (12); the first heat insulation groove (11) is formed between the first glue injection outer mold (13) and the first heating outer mold (14); The second mold (2) comprises a second core mold (22), a second glue injection outer mold (23) and a second heating outer mold (24); the second core mold (22) is connected to the first core mold (12) and surrounds the mold cavity (3); the second glue injection outer mold (23) and the second heating outer mold (24) are arranged at intervals along the length direction of the mold cavity (3) and are both connected to the second core mold (22); and the second heat insulation groove (21) is formed between the second glue injection outer mold (23) and the second heating outer mold (24).

5. The pultrusion die (100) according to claim 4, characterized in that: The first mold (1) further comprises a first connecting plate (15), wherein the first connecting plate (15) is connected to the first injection outer mold (13) and the first heating outer mold (14); and / or The second mold (2) further comprises a second connecting plate (25), wherein the second connecting plate (25) is connected to the second glue injection outer mold (23) and the second heating outer mold (24).

6. The pultrusion die (100) according to claim 5, characterized in that: The first connecting plate (15) is arranged on a side of the first injection mold (13) away from the first core mold (12), the first mold (1) further comprising a first heat insulating sheet (43), the first heat insulating sheet (43) being arranged between the first connecting plate (15) and the first injection mold (13); and / or The first heat insulating sheet (43) is arranged between the first connecting plate (15) and the first heating outer mold (14).

7. The pultrusion die (100) according to claim 5, characterized in that: The second connecting plate (25) is arranged on a side of the second injection mold (23) away from the second core mold (22), the second mold (2) further comprises a second heat insulating sheet (44), and the second heat insulating sheet (44) is arranged between the second connecting plate (25) and the second injection mold (23); and / or The second heat insulation sheet (44) is arranged between the second connecting plate (25) and the second glue injection outer mold (23).

8. The pultrusion die (100) according to claim 1, characterized in that: The injection section (31) comprises a connecting section (311) and a wetting section (312) which are arranged in sequence, the wetting section (312) being arranged between the connecting section (311) and the heating section (33), and the cross section of the wetting section (312) first increases and then decreases from the connecting section (311) to the heating section (33); The mold assembly has a glue injection hole (16), and the glue injection hole (16) is connected to the wetting section (312).

9. The pultrusion die (100) according to claim 5, characterized in that: At least one of the first connecting plate (15) and the second connecting plate (25) is a bakelite plate.

10. The pultrusion die (100) according to claim 1, characterized in that: At least one of the first heat insulating member (41) and the second heat insulating member (42) is made of ceramic material.

Images