Forming die for ladder assembly structure of composite airstairs

Abstract

The utility model provides a forming die for a ladder assembly structure of a composite material airstairs. A positioning structure for closing and positioning a lower die and an upper die is arranged between the lower die and the upper die; a locking mechanism for locking after the lower die and the upper die are closed is arranged between the lower die and the upper die; main forming cavities used for forming a ladder assembly main body are machined in the matched surfaces of the lower die and the upper die correspondingly, and cylindrical grooves and T-shaped grooves are formed in the outer side walls of the main forming cavities in a communicating mode; an inclined columnar ladder assembly forming cavity is formed in the inner side wall of the main forming cavity in a communicating manner; an L-shaped groove is formed in one end of the main forming cavity, and a lug plate groove is formed in the other end of the main forming cavity; a sleeve groove is formed in the end of the columnar ladder assembly forming cavity; and a plurality of groups of ladder plate pre-embedded connecting assemblies are arranged on the lower mold and the upper mold and located at the position of the main forming cavity. The forming die can be used for carrying out integral hot-press forming on the airstair assembly structure made of the composite material.

Description

Technical Field

[0001] This utility model belongs to the field of composite material boarding ladder component molding technology, specifically relating to a composite material boarding ladder frame structure molding mold. Background Technology

[0002] Existing boarding ladder rack structures are mainly made of aluminum alloy, which is relatively heavy and makes handling and transportation time-consuming and labor-intensive. Therefore, in order to ensure the structural strength of the boarding ladder rack, it is necessary to improve the materials used in the structure. Currently, the main structure of the boarding ladder rack is designed as a carbon-glass fiber hybrid composite foam sandwich structure. The core material is PMI foam, and the surface of the core material is covered with carbon fiber prepreg, and the surface of the carbon fiber is covered with glass fiber fabric prepreg. The overall goal is to achieve lightweighting, while the addition of foam core and glass fiber can improve overall rigidity, impact resistance, and wear resistance.

[0003] If a carbon-glass fiber hybrid composite foam sandwich structure is used, its molding process requires hot pressing, necessitating the design of corresponding molding dies. Furthermore, this ladder structure includes both a rectangular cross-section main structure and a circular cross-section ladder structure; therefore, during the integral molding process using dies, it is essential to ensure the final connection strength between the two components. Utility Model Content

[0004] The purpose of this invention is to provide a molding die for a composite material boarding ladder frame structure. This molding die can be used to perform overall hot pressing molding of the composite material boarding ladder frame structure, and it can effectively ensure the structural strength and stability of the ladder frame connection parts. At the same time, it improves the overall molding efficiency and quality of the ladder frame structure.

[0005] To achieve the aforementioned technical features, the present invention aims to provide a composite material boarding ladder frame structure molding mold, comprising a lower mold and an upper mold, wherein a positioning structure for positioning the two molds together is provided between the lower mold and the upper mold; a locking mechanism for locking the two molds together after they are closed is provided between the lower mold and the upper mold; main forming cavities for forming the main body of the ladder frame are respectively machined on the mating surfaces of the lower mold and the upper mold, and cylindrical grooves and T-grooves are connected on the outer side wall of the main forming cavity; inclined columnar ladder frame forming cavities are connected on the inner side wall of the main forming cavity; an L-shaped groove is provided at one end of the main forming cavity, and an ear plate groove is provided at the other end; a sleeve groove is provided at the end of the columnar ladder frame forming cavity; multiple sets of ladder plate pre-embedded connecting components are provided on the lower mold and the upper mold at the location of the main forming cavity.

[0006] The positioning structure includes positioning holes machined on the lower mold and the upper mold respectively. A positioning cone is fixedly installed on the positioning hole on the lower mold, and a positioning sleeve is fixedly installed on the positioning hole on the upper mold. The positioning cone and the positioning sleeve are inserted and fitted together.

[0007] The locking mechanism includes bolt holes machined on the upper mold, and a long bolt is installed at the location of the bolt hole. The bottom end of the long bolt is threadedly engaged with the threaded hole on the lower mold.

[0008] The main forming cavity is used to position and place the ladder frame body during the forming process.

[0009] The cylindrical groove is used to position and place the ladder handrail connecting seat;

[0010] The T-slot is used to position and place the T-block.

[0011] The L-shaped groove is used to position and place the L-shaped ladder shelf plate;

[0012] The ear plate groove is used to position and place the ear plate.

[0013] The sleeve groove is used to position and place the connecting sleeve.

[0014] The ladder plate pre-embedded connection assembly includes positioning bolt holes correspondingly set on the lower mold and the upper mold. A lower bolt is installed inside the positioning bolt hole of the lower mold. The top of the lower bolt is fixed to the lower ladder plate mounting column. The top of the lower ladder plate mounting column is fixedly connected to the pre-embedded connecting column pre-embedded inside the forming ladder frame body. The top of the pre-embedded connecting column is fixed to the upper ladder plate mounting column. The top of the upper ladder plate mounting column is fixed to the upper bolt. The upper bolt is installed inside the positioning bolt hole of the upper mold.

[0015] The present invention has the following beneficial effects:

[0016] 1. This molding die can be used for the overall hot pressing molding of composite material boarding ladder frame structures, which effectively ensures the structural strength and stability of the ladder frame connection parts, while improving the overall molding efficiency and quality of the ladder frame structure.

[0017] 2. The positioning structure described above can be used for positioning during the mold closing process, thereby ensuring the accuracy of mold closing.

[0018] 3. The locking mechanism described above can be used for locking after mold closing, thereby ensuring molding accuracy.

[0019] 4. The main molding cavity described above can be used to accurately position and place the ladder frame body to be molded.

[0020] 5. The cylindrical grooves described above can be used to accurately position and place the ladder handrail connecting seat, thereby enhancing the positioning and fixing strength of the ladder handrail connecting seat.

[0021] 6. The T-slots described above can be used to accurately position and place the T-blocks, thereby enhancing the positioning and fixing strength of the T-blocks.

[0022] 7. The above-mentioned ladder plate pre-embedded connection components can be used to pre-embed lower ladder plate mounting columns, pre-embedded connecting columns and upper ladder plate mounting columns inside the ladder frame body, thereby facilitating the subsequent fixed installation of the ladder plates. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a first-person perspective 3D view of the present invention.

[0025] Figure 2 This is a two-dimensional view of the present invention from a second perspective.

[0026] Figure 3 This is a three-dimensional view of the present invention from a third perspective.

[0027] Figure 4 This is a first-view 3D view of the lower mold of this utility model.

[0028] Figure 5 This is a two-dimensional view of the lower mold of this utility model from a second perspective.

[0029] Figure 6 This is a first-person 3D view of the upper mold of this utility model.

[0030] Figure 7 This is a two-dimensional view of the upper mold of this utility model from a second perspective.

[0031] Figure 8 This is a first-view three-dimensional view of the lower mold of this utility model after the ladder frame component is placed.

[0032] Figure 9 This is a second-view three-dimensional view of the lower mold of this utility model after the ladder frame component is placed.

[0033] Figure 10 This is a structural diagram showing the placement of the new ladder frame structure inside the mold.

[0034] In the diagram: 1. Lower mold; 2. Upper mold; 3. Bolt hole; 4. Long bolt; 5. Positioning hole; 6. Positioning bolt; 7. Upper bolt; 8. Positioning cone; 9. Positioning sleeve; 10. Main forming cavity; 11. Columnar groove; 12. T-groove; 13. L-groove; 14. Columnar ladder frame forming cavity; 15. Sleeve groove; 16. Ear plate groove; 17. Ear plate; 18. Connecting sleeve; 19. T-block; 20. Ladder frame handrail connecting seat; 21. L-shaped ladder frame plate; 22. Ladder frame body; 23. Columnar ladder frame; 24. Upper ladder plate mounting column; 25. Lower ladder plate mounting column; 26. Embedded connecting column; 27. Lower bolt. Detailed Implementation

[0035] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0036] See Figure 1-10 A composite material boarding ladder frame structure molding die includes a lower mold 1 and an upper mold 2. A positioning structure for positioning the lower mold 1 and the upper mold 2 when they are closed is provided between them. A locking mechanism for locking the lower mold 1 and the upper mold 2 after they are closed is provided between them. The mating surfaces of the lower mold 1 and the upper mold 2 are respectively machined with main molding cavities 10 for molding the main body of the ladder frame. A columnar groove 11 and a T-shaped groove 12 are connected to the outer side wall of the main molding cavity 10. An inclined columnar ladder frame molding cavity 14 is connected to the inner side wall of the main molding cavity 10. An L-shaped groove 13 is provided at one end of the main molding cavity 10, and an ear plate groove 16 is provided at the other end. A sleeve groove 15 is provided at the end of the columnar ladder frame molding cavity 14. Multiple sets of ladder plate pre-embedded connection components are provided on the lower mold 1 and the upper mold 2 at the location of the main molding cavity 10. This molding die can be used for integral hot pressing of composite material boarding ladder frame structures, ensuring the structural strength and stability of the ladder frame connection parts, while improving the overall molding efficiency and quality of the ladder frame structure.

[0037] Furthermore, the positioning structure includes positioning holes 5 corresponding to those machined on the lower mold 1 and the upper mold 2. A positioning cone 8 is fixedly installed on the positioning hole 5 on the lower mold 1, and a positioning sleeve 9 is fixedly installed on the positioning hole 5 on the upper mold 2. The positioning cone 8 and the positioning sleeve 9 are inserted and fitted together. The above-mentioned positioning structure can be used for positioning during the mold closing process, thereby ensuring the mold closing accuracy.

[0038] Furthermore, the locking mechanism includes bolt holes 3 machined on the upper mold 2, and a long bolt 4 is installed at the location of the bolt holes 3. The bottom end of the long bolt 4 forms a threaded engagement with a threaded hole on the lower mold 1. The locking mechanism described above can be used for locking after mold closing, thereby ensuring molding accuracy.

[0039] Furthermore, the main molding cavity 10 is used to position and place the ladder frame body 22 during the molding process. The main molding cavity 10 described above can be used to precisely position and place the ladder frame body 22 to be molded.

[0040] Furthermore, the cylindrical groove 11 is used to position and place the ladder handrail connecting seat 20; the cylindrical groove 11 can be used to accurately position and place the ladder handrail connecting seat 20, thereby enhancing the positioning and fixing strength of the ladder handrail connecting seat 20.

[0041] Furthermore, the T-slot 12 is used to position and place the T-block 19. The T-slot 12 described above can be used to accurately position and place the T-block 19, thereby enhancing the positioning and fixing strength of the T-block 19.

[0042] Furthermore, the L-shaped groove 13 is used to position and place the L-shaped ladder shelf 21; the L-shaped groove 13 can be used to accurately position and place the L-shaped ladder shelf 21, thereby enhancing the positioning and fixing strength of the L-shaped ladder shelf 21.

[0043] Furthermore, the ear plate groove 16 is used to position and place the ear plate 17. The ear plate groove 16 can be used to accurately position and place the ear plate 17, thereby enhancing the positioning and fixing strength of the ear plate 17.

[0044] Furthermore, the sleeve groove 15 is used to position and place the connecting sleeve 18. The sleeve groove 15 can be used to accurately position and place the connecting sleeve 18, thereby enhancing the positioning and fixing strength of the connecting sleeve 18.

[0045] Furthermore, the ladder plate pre-embedded connection assembly includes positioning bolt holes 6 correspondingly disposed on the lower mold 1 and the upper mold 2. A lower bolt 27 is installed inside the positioning bolt hole 6 in the lower mold 1. A lower ladder plate mounting post 25 is fixed to the top of the lower bolt 27. The top of the lower ladder plate mounting post 25 is fixedly connected to a pre-embedded connecting post 26 pre-embedded inside the formed ladder frame body 22. An upper ladder plate mounting post 24 is fixed to the top of the pre-embedded connecting post 26. An upper bolt 7 is fixed to the top of the upper ladder plate mounting post 24. The upper bolt 7 is installed inside the positioning bolt hole 6 in the upper mold 2. The ladder plate pre-embedded connection assembly described above can be used to pre-embed the lower ladder plate mounting post 25, the pre-embedded connecting post 26, and the upper ladder plate mounting post 24 inside the ladder frame body 22, thereby facilitating the subsequent fixing and installation of the ladder plate.

[0046] The specific working process and principle of this utility model are as follows:

[0047] The ladder frame structure molding method involves first pre-foaming the core, then laying carbon fiber prepreg on the surface of the foamed core, and pre-laying glass fiber prepreg in the bonding areas of the metal connectors. The bonded portions of the metal connectors are then placed into the main composite structure for pre-bonding. Local reinforcement is applied at the connection areas between rectangular and circular sections, as well as at the connections of circular tubes. Finally, glass fiber prepreg is laid on the entire outer surface. The prefabricated structure is then placed into a mold cavity and cured using molding technology. This boarding ladder frame molding method allows for integral molding, reducing secondary processing, reducing weight compared to metal connection methods, and improving performance stability.

Claims

1. A molding die for a composite material boarding ladder frame structure, characterized in that, The system includes a lower mold (1) and an upper mold (2). A positioning structure for positioning the two molds together is provided between the lower mold (1) and the upper mold (2). A locking mechanism for locking the two molds together is provided between the lower mold (1) and the upper mold (2). The surfaces of the lower mold (1) and the upper mold (2) that cooperate with each other are respectively machined with a main forming cavity (10) for forming the main body of the ladder frame. A columnar groove (11) and a T-shaped groove (12) are connected on the outer side wall of the main forming cavity (10). An inclined columnar ladder frame forming cavity (14) is connected on the inner side wall of the main forming cavity (10). An L-shaped groove (13) is provided at one end of the main forming cavity (10), and an ear plate groove (16) is provided at the other end. A sleeve groove (15) is provided at the end of the columnar ladder frame forming cavity (14). Multiple sets of ladder plate pre-embedded connection components are provided on the lower mold (1) and the upper mold (2) at the location of the main forming cavity (10).

2. The molding die for a composite material boarding ladder frame structure according to claim 1, characterized in that: The positioning structure includes positioning holes (5) machined on the lower mold (1) and the upper mold (2), a positioning cone (8) is fixedly installed on the positioning hole (5) on the lower mold (1), and a positioning sleeve (9) is fixedly installed on the positioning hole (5) on the upper mold (2). The positioning cone (8) and the positioning sleeve (9) are inserted into each other.

3. The molding die for a composite material boarding ladder frame structure according to claim 1, characterized in that: The locking mechanism includes a bolt hole (3) corresponding to the upper mold (2), and a long bolt (4) is installed at the location of the bolt hole (3). The bottom end of the long bolt (4) and the threaded hole on the lower mold (1) form a threaded engagement.

4. The molding die for a composite material boarding ladder frame structure according to claim 1, characterized in that: The main molding cavity (10) is used to position and place the ladder frame body (22) during the molding process.

5. The molding die for a composite material boarding ladder frame structure according to claim 1, characterized in that: The cylindrical groove (11) is used to position and place the ladder handrail connecting seat (20). The T-slot (12) is used to position and place the T-block (19).

6. The molding die for a composite material boarding ladder frame structure according to claim 1, characterized in that: The L-shaped groove (13) is used to position and place the L-shaped ladder shelf (21); The ear plate groove (16) is used to position and place the ear plate (17).

7. The molding die for a composite material boarding ladder frame structure according to claim 1, characterized in that: The sleeve groove (15) is used to position and place the connecting sleeve (18).

8. The molding die for a composite material boarding ladder frame structure according to claim 1, characterized in that: The ladder plate pre-embedded connection assembly includes positioning bolt holes (6) correspondingly set on the lower mold (1) and the upper mold (2). A lower bolt (27) is installed inside the positioning bolt hole (6) in the lower mold (1). The top of the lower bolt (27) is fixed to the lower ladder plate mounting column (25). The top of the lower ladder plate mounting column (25) is fixedly connected to the pre-embedded connecting column (26) pre-embedded inside the forming ladder frame body (22). The top of the pre-embedded connecting column (26) is fixed to the upper ladder plate mounting column (24). The top of the upper ladder plate mounting column (24) is fixed to the upper bolt (7). The upper bolt (7) is installed inside the positioning bolt hole (6) in the upper mold (2).

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