A wing sheet pressing mold and operation method of carbon fiber material

Abstract

The present invention discloses a winglet pressing die of carbon fiber material, comprising a lower die assembly and an upper die assembly, wherein the lower die assembly and the upper die assembly are matched with each other through a plurality of guide pillars and guide sleeves to achieve mold closing, a fitted insert is arranged on the upper surface of the lower die assembly, the insert and the left end inclined surface of the pressing block are pressed by screws, and a lifting assembly is arranged below the lower die assembly. The present invention adopts a structure in which the inclined surface pressing block presses the insert, so as to ensure that the overflow glue will not flow into the bottom surface of the insert through the gap during molding, thus avoiding the difficulty of demoulding the product, and the layout of the glue flow groove is reasonable, so that the product is easy to demould.

Description

Technical Field

[0001] The invention relates to the technical field of mold manufacturing, in particular to a winglet pressing mold made of carbon fiber material. Background Art

[0002] Wings are essential components of many powered aircraft, and their function is to provide lift for the aircraft during flight. With the continuous advancement and development of technology, aircraft have put forward higher requirements for the performance of all aspects of wing blades. Reducing the weight of wing blades as much as possible while ensuring that the wing blades have sufficient strength is the only way to design and manufacture wing blades. Using carbon fiber materials to manufacture wing blades is a good choice. Carbon fiber materials are light, have high mechanical strength after molding, and can withstand various harsh environments. However, the design of compression molding molds for carbon fiber materials is difficult. When the mold design is unreasonable, the overflow glue produced by pressing can easily block the upper and lower molds after solidification, making it difficult to demold and remove materials from the mold, and resulting in poor surface quality of the product. It is time-consuming and laborious for the operator to clean the mold, thereby reducing the production efficiency of the product. Summary of the invention

[0003] In order to solve the problems in the prior art, the present invention provides a carbon fiber winglet pressing mold which has a simple structure and is easy to demould.

[0004] The technical solution of the present invention is: a winglet pressing mold of carbon fiber material, including a lower mold assembly and an upper mold assembly, the lower mold assembly and the upper mold assembly are matched with a plurality of guide pillars and guide sleeves to achieve mold closing, the upper surface of the lower mold assembly is provided with a fitting insert, the insert and the left end inclined surface of the clamping block are pressed by screws, and a lifting assembly is provided below the lower mold assembly.

[0005] As a further improvement of the above technical solution:

[0006] Preferably, the upper mold assembly includes an upper heating plate, an upper mold fixedly connected to the upper heating plate by screws, and the upper mold is positioned by a plurality of cylindrical pins.

[0007] Preferably, the lower mold assembly includes a lower heating plate, a lower mold fixedly connected to the lower heating plate by screws, the insert is arranged on the step surface on the right side of the lower mold, and the lower mold is positioned by a plurality of cylindrical pins.

[0008] Preferably, a plurality of limit blocks are provided on the lower die.

[0009] Preferably, a plurality of through holes and blind holes are provided on the heating plates of the lower mold assembly and the upper mold assembly for placing heating rods and temperature sensors.

[0010] Preferably, the lifting assembly includes a lower pad fixed to the lower surface of the lower mold assembly by screws, a base plate fixed to the lower pad by screws, a push rod penetrating the base plate, a fixing plate arranged at the upper end of the push rod, a push plate fixed to the upper surface of the fixing plate by screws, and a push rod vertically fixed on the push plate by screws, the upper end of the push rod penetrating the lower mold assembly and located on the lower surface of the insert.

[0011] Preferably, the insert is provided with a plurality of screw holes and a plurality of wrench slots.

[0012] In order to match the use of the mold, the present invention also provides a method for using a wing sheet pressing mold of a carbon fiber material, comprising the following steps:

[0013] Step 1. Press the mold for trial, fix the mold on the press equipment with bolts, calibrate the mold position, and ensure smooth mold closing;

[0014] Step 2. After the release agent is evenly coated on the surfaces of the upper mold and the lower mold, the laid carbon fiber blank is placed into the lower mold cavity, the mold is pressed, and the process parameters such as pressure, pressing time and temperature are controlled according to the pressing process;

[0015] Step 3. After the pressing is completed, the press equipment is controlled to return the upper die to the initial position, and the operator loosens the fixing screws of the pressing block;

[0016] Step 4, control the press equipment to extend the push rod. When the push rod lifts the insert, it brings out the pressed wing. The operator takes out the wing and the push rod retracts to its original position.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention adopts a structure in which an inclined pressure block is pressed tightly against an insert, so as to ensure that the overflowing glue will not flow into the bottom surface of the insert through the gap during molding, thereby avoiding the difficulty of demoulding the product. The layout of the glue flow groove is reasonable, and the product is easy to demould.

[0019] 2. The insert of the present invention is designed with 3 screw holes and 4 wrench slots, which can manually handle the abnormal tightness of the insert to prevent the product from being unable to be removed after the insert is stuck.

[0020] 3. In the present invention, the push rod pushes out the insert and takes out the product at the same time, so the product demoulding is more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall explosion structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the front view of the present invention;

[0024] Figure 3 It is a schematic diagram of the top view structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the insert of the present invention.

[0026] Figure numerals: 1. push rod; 2. push rod; 3. fixed plate; 4. push plate; 5. bottom plate; 6. lower pad; 7. lower heating plate; 8. lower die; 9. guide sleeve; 10. upper die; 11. upper heating plate; 12. guide column; 13. insert; 14. clamping block; 15. cylindrical pin; 16. limit block. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "up", "down", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it cannot be understood as a limitation on the present invention. The technical solutions of the various embodiments of the present invention can be combined, and the technical features in the embodiments can also be combined to form a new technical solution.

[0029] The present invention provides the following technical solutions:

[0030] As attached Figure 1 and Figure 3As shown, the upper mold 10 and the lower mold 8 are fixed to the upper heating plate 11 and the lower heating plate 7 by screws, and are positioned by two cylindrical pins 15 respectively. When the upper mold 10 and the lower mold 8 are closed, four sets of guide pillars 12 and guide sleeves 9 are used for closing the mold.

[0031] Four through holes and two blind holes are provided on the upper heating plate 11 and the lower heating plate 7 for placing the heating rods and the temperature sensors.

[0032] The left end face of the insert 13 fits with the right step face of the lower die 8, and the left end inclined face of the clamping block 14 is pressed against the insert 13 by screws, thereby ensuring that the contact surface of the insert 13 and the lower die 8 fits tightly. The insert 13 is provided with a plurality of screw holes and a plurality of wrench slots.

[0033] The bottom plate 5 and the lower pad 6 are fixed on the lower heating plate 7 by screws.

[0034] One end of the push rod 2 passes through the through holes of the fixed plate 3 and the bottom plate 5, and contacts with the step surface of the push rod 2 and the fixed plate 3. The push rod 2, the fixed plate 3 and the push plate 4 are connected by screws. The push rod 1 is fixed to the push plate 4 with screws. The upper end of the push rod 1 passes through the lower heating plate 7 and the lower mold 8 and is located on the lower surface of the insert 13.

[0035] The limit block 16 is fixed to the lower die 8 by screws.

[0036] Working process of the present invention:

[0037] 1. Press the mold to test the mold, fix the mold on the press equipment with bolts, calibrate the mold position, and ensure smooth mold closing;

[0038] 2. After the release agent is evenly coated on the surfaces of the upper mold 10 and the lower mold 8, the laid carbon fiber blank is placed into the cavity of the lower mold 8, the molds are pressed together, and the process parameters such as pressure, pressing time and temperature are controlled according to the pressing process;

[0039] 3. After the pressing is completed, the press equipment is controlled to return the upper die 10 to the initial position, and the operator loosens the fixing screws of the clamping block 14;

[0040] 4. Control the press equipment to extend the push rod 1. When the push rod 1 lifts the insert 13, it brings out the pressed wing. The operator takes out the wing and the push rod 1 retracts to its original position.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A winglet pressing die of carbon fiber material, comprising a lower die assembly and an upper die assembly, wherein the lower die assembly and the upper die assembly are matched with a plurality of guide pillars (12) and guide sleeves (9) to achieve mold closing, characterized in that: The upper surface of the lower mold assembly is provided with a fitted insert (13), the insert (13) and the left end inclined surface of the pressing block (14) are pressed together by screws, and a lifting assembly is provided below the lower mold assembly; The upper die assembly comprises an upper heating plate (11), an upper die (10) fixedly connected to the upper heating plate (11) by screws, and the upper die (10) is positioned by a plurality of cylindrical pins (15); The lower die assembly comprises a lower heating plate (7), a lower die (8) fixedly connected to the lower heating plate (7) by screws, the insert (13) being arranged on a step surface on the right side of the lower die (8), and the lower die (8) being positioned by a plurality of cylindrical pins (15); The lifting assembly comprises a lower pad (6) fixed to the lower surface of the lower mold assembly by screws, a bottom plate (5) fixed to the lower pad (6) by screws, a push rod (2) penetrating the bottom plate (5), a fixing plate (3) arranged at the upper end of the push rod (2), a push plate (4) fixed to the upper surface of the fixing plate (3) by screws, and a push rod (1) vertically fixed to the push plate (4) by screws, wherein the upper end of the push rod (1) penetrates the lower mold assembly and is located on the lower surface of the insert (13).

2. The wing sheet pressing die of carbon fiber material according to claim 1, characterized in that: A plurality of limit blocks (16) are provided on the lower die (8).

3. The wing sheet pressing die of carbon fiber material according to claim 1, characterized in that: A plurality of through holes and blind holes are provided on the heating plates of the lower mold assembly and the upper mold assembly for placing heating rods and temperature sensors.

4. The wing sheet pressing die of carbon fiber material according to claim 1, characterized in that: The insert (13) is provided with a plurality of screw holes and a plurality of wrench slots.

5. An operating method of a winglet pressing mold based on the carbon fiber material according to claim 1, characterized in that: The following steps are involved: Step 1. Press the mold for trial, fix the mold on the press equipment with bolts, calibrate the mold position, and ensure smooth mold closing; Step 2, after the surfaces of the upper mold (10) and the lower mold (8) are evenly coated with a mold release agent, the laid carbon fiber blank is placed in the cavity of the lower mold (8), the molds are pressed together, and the pressure, pressing time and temperature are controlled according to the pressing process; Step 3, after the pressing is completed, the press equipment is controlled to return the upper die (10) to the initial position, and the operator loosens the fixing screws of the clamping block (14); Step 4, control the press equipment to extend the push rod (1), and when the push rod (1) lifts the insert (13), the pressed wing piece is brought out, and the operator takes out the wing piece, and the push rod (1) retracts to its original position.

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