Forming mold based on resin-based composite material

Abstract

The utility model relates to a resin-based composite material forming die which comprises a female die and a male die, the male die comprises an inner male die and an outer male die sleeved outside the inner male die, the female die is arranged on the periphery of the outer male die, a die core assembly is arranged on the outer wall of the outer male die, and a plurality of layers of product forming materials are laid on the outer wall of the die core assembly. A lining plate assembly is arranged along the outer surface of the product forming material, and the outer wall of the lining plate assembly abuts against the inner wall of the female die. Heating systems are arranged in the inner male die and the female die respectively, and heat insulation systems are arranged on the top surface of the female die upper pressing disc, the inner wall surface of the inner male die, the outer wall surface and the bottom end surface of the female die and the lower side surface of the bottom plate. According to the scheme, the first ejection mechanism and the second ejection mechanism are arranged on the bottom plate, so that the piece taking time is effectively shortened, and the labor intensity is effectively reduced. The die is low in manufacturing cost, short in forming time, high in manufacturing efficiency and capable of achieving efficient production.

Description

Technical Field

[0001] The utility model relates to the technical field of composite material forming molds, in particular to a resin-based composite material forming mold. Background Art

[0002] With the development of science and technology, the composite material forming process has been widely applied in various fields. With the broadening of the application fields of resin-based composite materials, its traditional forming process has become increasingly perfect, and new forming methods have emerged continuously. The equipment and process of composite material forming should be adapted to the output of products to minimize the average cost of single-piece products. After more than half a century of development, there are many composite material forming methods. Each process has its own advantages and disadvantages and its own application scope. For example, hand lay-up molding has low equipment investment and simple process, but has low production efficiency, long production cycle, difficult product quality control, poor performance stability, and is easy to cause harm to construction personnel.

[0003] Existing high-temperature resin-based composite material molds have the following defects: they need to queue up to wait for the heating step in the autoclave equipment. Each time of heating requires loading the whole set of molds into the autoclave, and after heating is completed, the molds need to be transported out of the autoclave, resulting in low production efficiency, high manufacturing cost, and difficulty in meeting the requirements of batch production.

[0004] To overcome the above deficiencies, this solution proposes a resin-based composite material forming mold. Summary of the Utility Model

[0005] The invention purpose of the utility model is to solve the problems existing in the existing high-temperature resin-based composite material molds, that is, queuing up to wait for heating in the autoclave equipment, loading the whole set of molds into the autoclave each time of heating, and transporting the molds out of the autoclave after heating is completed, resulting in low production efficiency, high manufacturing cost, and difficulty in meeting the requirements of batch production. The specific solution of this resin-based composite material forming mold is as follows:

[0006] The resin-based composite material forming mold includes a female mold and a male mold. The male mold includes an inner male mold and an outer male mold sleeved outside the inner male mold. The female mold is arranged outside the outer male mold. A mold core assembly is arranged on the outer wall of the outer male mold. Multiple layers of product forming materials are laid on the outer wall of the mold core assembly. A lining plate assembly is arranged along the outer surface of the product forming materials. The outer wall of the lining plate assembly is in contact with the inner wall of the female mold. Heating systems are respectively arranged inside the inner male mold and the female mold. The inner male mold is fixedly connected with a bottom plate. A female mold upper pressing plate is arranged at the upper end of the female mold. Heat insulation systems are arranged on the top surface of the female mold upper pressing plate, the inner wall surface of the inner male mold, the outer wall surface and the bottom surface of the female mold, and the lower surface of the bottom plate.

[0007] Further, the heat insulation system includes an upper heat insulation plate disposed on the top surface of the upper pressing plate of the female mold, heat insulation felts disposed on the inner wall surface of the inner male mold and the outer wall surface of the female mold, and a lower heat insulation plate disposed on the lower surface of the bottom plate, and further includes a female mold heat insulation plate disposed on the bottom end surface of the female mold.

[0008] Further, both the inner male mold and the outer male mold are hollow frustum-shaped, the upper ends of the outer male mold and the inner male mold are flush, and the lower end of the outer male mold is higher than the lower end of the inner male mold.

[0009] Further, the mold core assembly is in a hollow cylindrical shape, and the hollow space matches the outer surface of the outer male mold. The mold core assembly includes a plurality of lower male die segments and a plurality of upper male die segments disposed at its upper end. The longitudinal sections of the lower male die segments and the upper male die segments are both inverted trapezoids. The upper end of the upper male die segment is lower than the upper end of the outer male mold, and the lower end of the lower male die segment is higher than the lower end of the outer male mold.

[0010] Further, a plurality of first screw through holes are provided on the upper side wall of the outer male mold and are fixedly connected to the inner wall of the upper male die segment through screws.

[0011] Further, a plurality of second screw through holes are provided on the lower side wall of the outer male mold and are fixedly connected to the inner wall of the lower male die segment through screws.

[0012] Further, an upper cover plate of the male mold is provided at the upper ends of the male mold and the mold core assembly and is locked by fasteners.

[0013] Further, a lower demolding ring is provided at the lower ends of the outer male mold and the lower male die segment, and the lower demolding ring is fixedly connected to the lower end of the outer male mold through fasteners.

[0014] Further, the lining plate assembly is formed by enclosing a plurality of lining plates into a circle, and an inner support ring is provided between the lower end of the lining plate assembly and the bottom plate; an outer support ring is provided between the lower side of the female mold heat insulation plate and the bottom plate.

[0015] Further, a second ejection mechanism is provided between the lower demolding ring and the bottom plate, and a floating platform is provided at the bottom end of the female mold, and a first ejection mechanism is provided between the floating platform and the female mold heat insulation plate and the bottom plate.

[0016] In summary, adopting the technical solution of the present utility model has the following beneficial effects:

[0017] This solution is based on a resin-based composite material forming mold, which has high-quality and beautiful appearance of the formed products, and high forming efficiency. The forming material of this solution is a resin-based composite material that can withstand temperatures above 400°C. The mold of this solution is a self-heating forming process mold, and the heating systems inside the inner male mold and the female mold are electric heating rod structures. The heating rods are evenly arranged inside the inner male mold and the female mold, and a heat insulation system is provided on the mold to effectively perform the heat preservation function, so that the mold can be heated evenly to reach the required temperature, effectively shortening the forming time and improving the forming efficiency. To meet the requirements of high-efficiency forming, a first ejection mechanism is provided on the bottom plate to facilitate the rapid separation of the female mold and the male mold, and a second ejection mechanism is also provided on the bottom plate to facilitate the rapid separation of the mold core assembly and the outer male mold from the inner male mold, realizing the ejection of the product and manual picking, effectively reducing the picking time and labor intensity. The mold of this solution has low manufacturing cost, short forming time, high manufacturing efficiency, and can realize high-efficiency production. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings in the following description are only a part of the embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative labor.

[0019] Figure 1 It is a sectional view of the resin-based composite material forming mold according to the present invention;

[0020] Figure 2 It is an exploded view of the resin-based composite material forming mold according to the present invention;

[0021] Figure 3 It is a sectional view of the product of the present invention.

[0022] Description of the Reference Numerals:

[0023] 10 - female mold, 11 - upper pressing plate of the female mold, 12 - upper heat insulation plate, 13 - floating platform, 14 - set screw, 15 - heating rod, 20 - male mold, 21 - inner male mold, 22 - outer male mold, 220 - screw, 221 - first screw through hole, 222 - second screw through hole, 223 - positioning pin hole, 23 - upper cover plate of the male mold, 24 - lower demolding ring, 25 - positioning pin, 241 - ejection bolt, 30 - mold core assembly, 31 - lower male segment mold, 32 - upper male segment mold, 33 - strip groove, 40 - product forming material, 50 - lining plate assembly, 51 - lining plate, 52 - hoop groove, 60 - bottom plate, 61 - heat insulation felt, 62 - lower heat insulation plate, 63 - female mold heat insulation plate, 70 - inner support ring, 71 - outer support ring, 80 - connecting screw, 81 - junction box, 90 - product, 91 - transverse reinforcing rib, 92 - longitudinal reinforcing rib. Detailed implementation mode

[0024] 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 embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] As Figures 1 to 3 shown, based on a resin matrix composite forming mold, it includes a female mold 10 and a male mold 20. The male mold 20 includes an inner male mold 21 and an outer male mold 22 sleeved outside the inner male mold 21. The female mold 10 is arranged on the periphery of the outer male mold 22. A mold core assembly 30 is arranged on the outer wall of the outer male mold 22. Multiple layers of product forming materials 40 are laid on the outer wall of the mold core assembly 30. A lining plate assembly 50 is arranged along the outer surface of the product forming materials 40. The outer wall of the lining plate assembly 50 is in contact with the inner wall of the female mold 10. Heating systems are respectively arranged inside the inner male mold 21 and the female mold 10. The inner male mold 21 is fixedly connected to a bottom plate 60. A female mold upper pressing plate 11 is arranged at the upper end of the female mold 10. Heat insulation systems are arranged on the top surface of the female mold upper pressing plate 11, the inner wall surface of the inner male mold 21, the outer wall surface and the bottom surface of the female mold 10, and the lower surface of the bottom plate 60.

[0026] Specifically, the heat insulation system includes an upper heat insulation plate 12 arranged on the top surface of the female mold upper pressing plate 11, heat insulation felts 61 arranged on the inner wall surface of the inner male mold 21 and the outer wall surface of the female mold 10, a lower heat insulation plate 62 arranged on the lower surface of the bottom plate 60, and a female mold heat insulation plate 63 arranged on the bottom surface of the female mold 10.

[0027] Specifically, both the inner male mold 21 and the outer male mold 22 are hollow frustum-shaped. The upper ends of the outer male mold 22 and the inner male mold 21 are flush, and the lower end of the outer male mold 22 is higher than the lower end of the inner male mold 21.

[0028] Specifically, the mold core assembly 30 is in a hollow cylindrical shape. The hollow space matches the outer surface of the outer male mold 22. The inner wall of the mold core assembly 30 is closely attached to the outer surface of the outer male mold 22. The mold core assembly 30 includes a plurality of lower male die segments 31 and a plurality of upper male die segments 32 arranged at its upper end. The longitudinal sections of the lower male die segments 31 and the upper male die segments 32 are both inverted trapezoids. The upper end of the upper male die segments 32 is lower than the upper end of the outer male mold 22, and the lower end of the lower male die segments 31 is higher than the lower end of the outer male mold 22.

[0029] Specifically, a plurality of first screw through holes 221 are provided on the upper side wall of the outer male mold 22, and are fixedly connected to the inner wall of the upper male flap mold 32 through screws 220. A plurality of second screw through holes 222 are provided on the lower side wall of the outer male mold 22, and are fixedly connected to the inner wall of the lower male flap mold 31 through screws 220. In order to improve the positioning accuracy, a plurality of positioning pin holes 223 are respectively provided beside the first screw through holes 221 and the second screw through holes 222, and the outer male mold 22 is precisely positioned with the lower male flap mold 31 and the upper male flap mold 32 through a plurality of positioning pins 25.

[0030] Specifically, an upper cover plate 23 of the male mold is provided at the upper ends of the male mold 20 and the mold core assembly 30, and is locked through fasteners (such as screws).

[0031] Specifically, a lower demolding ring 24 is provided at the lower ends of the outer male mold 22 and the lower male flap mold 31, and the lower demolding ring 24 is fixedly connected to the lower end of the outer male mold 22 through fasteners (such as screws).

[0032] Specifically, the liner assembly 50 is formed by enclosing a plurality of liners 51 in a circular shape. An inner support ring 70 is provided between the lower end of the liner assembly 50 and the bottom plate 60; an outer support ring 71 is provided between the lower side of the female mold heat insulation plate 63 and the bottom plate 60.

[0033] Specifically, a second ejection mechanism is provided between the lower demolding ring 24 and the bottom plate 60. The second ejection mechanism is a plurality of ejection bolts 241 of the lower demolding ring 24. A floating platform 13 is provided at the bottom end of the female mold 10. A first ejection mechanism is provided between the floating platform 13 and the female mold heat insulation plate 63 and the bottom plate 60. The first ejection mechanism is a plurality of set screws 14 of the female mold 10.

[0034] The heating system inside the inner male mold 21 and the female mold 10 of this solution is a structure of a plurality of electric heating rods 15

[0035] The usage process of the mold in this solution is briefly described as follows: First, fix the lower heat insulation plate 62 on the lower side of the bottom plate 60. After pasting the heat insulation felt 61 on the inner wall of the inner male mold 21, fix it on the bottom plate 60 through fasteners. Install the outer support ring 71 and the inner support ring 70 on the upper surface of the bottom plate 60 respectively. Fix the upper male flap mold 32 on the outer surface of the outer male mold 22 from the inner wall of the outer male mold 22 with screws 220 and positioning pins 25. Fix the lower male flap mold 31 on the outer surface of the outer male mold 22 from the inner wall of the outer male mold 22 with screws 220 and positioning pins 25. Lay multiple layers of product forming materials 40 (i.e., high-temperature resin matrix composites) on the outer walls of the upper male flap mold 32 and the lower male flap mold 31. Install the upper cover plate 23 of the male mold and lock the fasteners. Install the lower demolding ring 24 at the lower end of the outer male mold 22. Install the lining plate assembly 50: Use screws and hoop bands (not shown in the figure, and there are hoop band grooves 52 on the lining plate 51) to tightly surround multiple lining plates 51 on the side of the upper cover plate 23 of the male mold and the outer surface of the multiple layers of product forming materials 40. Set the combination of the outer male mold 22, the mold core assembly 30, the upper cover plate 23 of the male mold, the lower demolding ring 24 and the lining plate assembly 50 outside the inner male mold 21. Lower the female mold 10 with the heat insulation felt 61 pre-pasted and the female mold heat insulation plate 63 installed from top to bottom to close with the male mold 20, and lock the connecting screws 80 of the female mold 10 and the bottom plate 60. Install the upper pressing plate 11 of the female mold, and then lift the whole set of molds into a press (not shown in the figure). The mold is connected to a temperature control device (not shown in the figure) through a junction box 81, and start heating the mold. While the mold is being heated, the press applies pressure to the female mold 10 through the upper pressing plate 11 of the female mold (referring to mechanical pressure, this mechanical pressure is transmitted through the female mold 10 to the lining plate assembly 50 and then applies pressure to the product forming materials 40). The female mold 10 is heated and pressurized at the same time. After reaching the set time, the product 90 is formed (the product forming materials 40 become the product 90 after forming). Then enter the product demolding stage: Remove the upper pressing plate 11 of the female mold, and then remove the connecting screws 80 of the female mold 10 and the bottom plate 60. Use multiple jack screws 14 to jack the bottom plate 60 to loosen the female mold 10, and then use a lifting ring (not shown in the figure) to lift the female mold 10 and separate it from the male mold 20. Remove the screws and hoop bands of the lining plate 51 and move the lining plate 51 out of the mold. Then remove the upper cover plate 23 of the male mold. Use multiple ejector bolts 241 to jack the lower demolding ring 24 upward to loosen the outer male mold 22 and the mold core assembly 30. Lift the whole outer male mold 22, the mold core assembly 30 and the lower demolding ring 24 together and away from the inner male mold 21. Remove the lower demolding ring 24. After removing the screws 220 and positioning pins 25 from the inner wall of the outer male mold 22, remove the lower male flap mold 31 and the upper male flap mold 32 one by one from the inside of the product 90 to obtain the product 90.

[0036] Description: A plurality of longitudinal reinforcing ribs 92 are evenly arranged on the inner wall of the product 90, and an annular transverse reinforcing rib 91 is arranged in the middle of the inner wall of the product 90. Therefore, the core assembly 30 of this solution includes a plurality of lower male die segments 31 and a plurality of upper male die segments 32. Longitudinal strip grooves 33 are provided on the outer surfaces of each lower male die segment 31 and upper male die segment 32 for forming the longitudinal reinforcing ribs 92, and the gap between the upper end of each lower male die segment 31 and the lower end of the upper male die segment 32 is used to form the transverse reinforcing rib 91. The structural design principle of this solution can be used for the molding of resin matrix composite products with other structural shapes, and the corresponding core assembly 30 can be designed according to its specific structure.

[0037] In summary, the technical solution of the present utility model has the following beneficial effects:

[0038] This solution is based on a resin matrix composite molding die, which has high-quality and beautiful appearance of the molded product, and high molding efficiency. The molding material of this solution is a resin matrix composite material resistant to high temperatures above 400 °C. The mold of this solution is a self-heating molding process mold, and the heating systems inside the inner male mold and the female mold are electric heating rod structures. The heating rods are evenly arranged inside the inner male mold and the female mold, and a heat insulation system is provided on the mold to effectively perform the heat preservation function, so that the mold can be heated evenly to reach the required temperature, effectively shortening the molding time and improving the molding efficiency. In order to meet the requirements of high-efficiency molding, a first ejection mechanism is provided on the bottom plate to facilitate the rapid separation of the female mold and the male mold. A second ejection mechanism is also provided on the bottom plate to facilitate the rapid separation of the core assembly and the outer male mold from the inner male mold, realizing product ejection and manual part taking, effectively reducing the part taking time and labor intensity. The mold of this solution has low manufacturing cost, short molding time, high manufacturing efficiency, and can achieve high-efficiency production.

[0039] The above-described embodiments do not constitute a limitation on the protection scope of the technical solution. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the above embodiments shall be included in the protection scope of the technical solution.

Claims

1. A resin matrix composite material forming mold, comprising a female mold and a male mold, characterized in that: The male mold includes an inner male mold and an outer male mold sleeved outside the inner male mold. The female mold is arranged on the periphery of the outer male mold. A core assembly is provided on the outer wall of the outer male mold. Multiple layers of product forming materials are laid on the outer wall of the core assembly. A lining plate assembly is arranged along the outer surface of the product forming materials. The outer wall of the lining plate assembly is in contact with the inner wall of the female mold. Heating systems are respectively arranged inside the inner male mold and the female mold. The inner male mold is fixedly connected to the bottom plate. A female mold upper pressing plate is arranged at the upper end of the female mold. Heat insulation systems are arranged on the top surface of the female mold upper pressing plate, the inner wall surface of the inner male mold, the outer wall surface and the bottom surface of the female mold, and the lower side surface of the bottom plate.

2. The resin matrix composite material forming mold according to claim 1, characterized in that: The heat insulation system includes an upper heat insulation plate arranged on the top surface of the female mold upper pressing plate, heat insulation felts arranged on the inner wall surface of the inner male mold and the outer wall surface of the female mold, and a lower heat insulation plate arranged on the lower side surface of the bottom plate. It also includes a female mold heat insulation plate arranged on the bottom surface of the female mold.

3. The resin matrix composite material-based forming die according to claim 2, wherein: Both the inner male mold and the outer male mold are hollow frustum-shaped. The upper ends of the outer male mold and the inner male mold are flush. The lower end of the outer male mold is higher than the lower end of the inner male mold.

4. The resin matrix composite material forming mold according to claim 3, characterized in that: The core assembly is in a hollow cylindrical shape. The hollow space matches the outer surface of the outer male mold. The core assembly includes a plurality of lower male die segments and a plurality of upper male die segments arranged at its upper end. The longitudinal sections of the lower male die segments and the upper male die segments are both inverted trapezoids. The upper end of the upper male die segment is lower than the upper end of the outer male mold. The lower end of the lower male die segment is higher than the lower end of the outer male mold.

5. The resin matrix composite material-based molding die according to claim 4, characterized in that: A plurality of first screw through holes are provided on the upper side wall of the outer male mold and are fixedly connected to the inner wall of the upper male die segment through screws.

6. The resin matrix composite material forming mold according to claim 5, characterized in that: A plurality of second screw through holes are provided on the lower side wall of the outer male mold and are fixedly connected to the inner wall of the lower male die segment through screws.

7. The resin matrix composite material-based molding die according to claim 6, wherein: A male mold upper cover plate is provided at the upper ends of the male mold and the core assembly and is locked by fasteners.

8. The resin matrix composite material-based forming die according to claim 7, wherein: A lower demolding ring is provided at the lower ends of the outer male mold and the lower male die segment. The lower demolding ring is fixedly connected to the lower end of the outer male mold through fasteners.

9. The resin matrix composite material forming die according to claim 8, wherein: The lining plate assembly is formed by enclosing a circle with a plurality of lining plates. An inner support ring is provided between the lower end of the lining plate assembly and the bottom plate. An outer support ring is provided between the lower side of the female mold heat insulation plate and the bottom plate.

10. The resin matrix composite material forming mold according to claim 9, wherein: A second ejecting mechanism is provided between the lower demolding ring and the bottom plate. A floating platform is provided at the bottom end of the female mold. A first ejecting mechanism is provided between the floating platform and the female mold heat insulation plate and the bottom plate.

Images