Demolding tool for open hollow composite workpiece

Abstract

The utility model discloses a demoulding tool for an open hollow composite part, the open hollow composite part is formed on a combined mould body to form a combined body to be demoulded, the combined mould body is arranged on a bag making platform, the inner surface of the open hollow composite part is provided with an inner concave and / or inner convex component, and the combined body is provided with a plurality of inner concave and / or outer convex components. The tool comprises an overturning hoisting frame used for hoisting the assembly to a set demolding station, and the overturning hoisting frame is connected with a bag making platform; the plurality of fixed clamping plates are used for limiting the relative position between the assembly and the turnover hoisting frame; and the demolding bracket is used for supporting the combined body at the demolding station and is also used for separating the combined mold body from the open hollow composite workpiece according to a set demolding sequence. The tool disclosed by the utility model is simple in structure and convenient to operate, can greatly improve the demolding efficiency of the open hollow composite workpiece with the concave and / or convex component, and simultaneously reduces the damage of demolding operation to the appearance of a finished product.

Description

Technical Field

[0001] The utility model belongs to the technical field of demoulding tooling, and in particular relates to a demoulding tooling for an open hollow composite material part. Background Art

[0002] Composite materials are very suitable for aerospace structures that have extreme requirements for load-bearing and lightweight because of their advantages such as light weight, high modulus, high strength, designability, high temperature resistance, excellent thermal stability, fatigue resistance, corrosion resistance, and good processability. People have long used composite materials to apply them to the aerospace field using their high strength, high modulus, high temperature resistance, and light weight. With the continuous development of composite material technology, its application level in the aerospace field has been continuously improved and its application scope has been continuously deepened. At present, it has basically covered all structures of aircraft, missiles, rockets, satellites, spacecraft and other systems, including load-bearing structures, secondary structures, heat-resistant (heat-resistant) structures and other functional structures. At the same time, with the continuous development of aerospace technology and the continuous deepening of exploration fields, the demand for advanced composite materials is also increasing.

[0003] Open hollow composite parts with concave and convex components are a common typical structure in aerospace structures. Demolding open hollow composite parts with concave and convex components after molding has always been a difficult problem in the industry, especially when demolding larger parts, the operation is more difficult, and it is difficult to demold smoothly without the help of special tooling. Utility Model Content

[0004] In order to solve the deficiencies in the prior art, the utility model provides a demoulding tool for an open hollow composite part. The tool has a simple structure and is easy to operate. It can greatly improve the demoulding efficiency of an open hollow composite part with concave and / or convex components, while reducing the damage to the surface of the finished product caused by the demoulding operation.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0006] In a first aspect, a demoulding tool for an open hollow composite part is provided, wherein the open hollow composite part is formed on a combined mold body to form a combination to be demoulded, the combined mold body is mounted on a bag making platform, and the inner surface of the open hollow composite part has a concave and / or convex component, and the tool comprises: a flip hoisting frame for hoisting the combination to a set demoulding station, the flip hoisting frame being connected to the bag making platform; a plurality of fixed clamping plates for limiting the relative position between the combination and the flip hoisting frame; and a demoulding bracket for supporting the combination at the demoulding station, the demoulding bracket being further used to separate the combined mold body from the open hollow composite part according to a set demoulding sequence.

[0007] Furthermore, the fixed clamping plate includes: a plurality of fixed ends connected to the flip hoisting frame; and a supporting end matching the outer surface contour of the open hollow composite member and abutting against the outer surface of the open hollow composite member.

[0008] Furthermore, a plurality of universal lifting rings are provided on the flip lifting frame.

[0009] Furthermore, the flip hoisting frame is a rectangular parallelepiped structure formed by splicing a plurality of columns and beams.

[0010] Furthermore, the demoulding support is provided with: a plurality of supporting units for supporting the combination; a limiting unit for limiting the combined mold body; and a demoulding unit for extracting the first mold body in the combined mold body from the open hollow composite part; wherein the inner surface of the open hollow composite part corresponding to the molding surface of the first mold body has no concave and convex components.

[0011] Furthermore, each of the support units includes: a support card that matches the outer surface contour of the open hollow composite part and abuts against the outer surface of the open hollow composite part; a card slot for installing the support card; a guide rod connected to the card slot at one end; a guide sleeve connected to the demoulding bracket at one end; the other end of the guide rod is slidably connected to the other end of the guide sleeve; a driving mechanism connected to the card slot and used to drive the support card to approach or move away from the open hollow composite part, and the driving mechanism is installed on the demoulding bracket.

[0012] Furthermore, the limiting unit includes a limiting fixing frame, one side of the limiting fixing frame is connected to the demoulding support, and the other side is connected to the second mold body in the combined mold body; wherein the inner surface of the open hollow composite part corresponding to the molding surface of the second mold body is provided with a concave and / or convex component.

[0013] Furthermore, the demoulding unit comprises: a screw rod, one end of which is connected to the first mold body via a connecting seat; a screw rod nut drivingly connected to the screw rod, and the screw rod nut is installed on the demoulding bracket via a screw rod support.

[0014] In a second aspect, a method for using a demolding tool for an open hollow composite part is provided, wherein the tool is the demolding tool for an open hollow composite part described in the first aspect, and the method comprises: installing a flip hoisting frame on a bag making platform, and limiting the relative position between the assembly and the flip hoisting frame with a fixed clamp; hoisting the assembly to a set demolding station by means of the flip hoisting frame, and placing it on the demolding bracket, and then removing the flip hoisting frame and the bag making platform; on the demolding bracket, separating the combined mold body from the open hollow composite part according to a set demolding sequence.

[0015] Further, the combined mold body is separated from the open hollow composite part according to a set demoulding sequence, including: adjusting a support unit to support the combined body; connecting a limiting unit to limit a second mold body in the combined mold body; connecting a demoulding unit to a first mold body in the combined mold body, and extracting the first mold body from the open hollow composite part through the demoulding unit; adjusting the support unit to separate the support unit from the combined body, and then separating the open hollow composite part from the second mold body, thereby completing the demoulding of the open hollow composite part; wherein, the inner surface of the open hollow composite part corresponding to the profile of the first mold body has no concave and convex components; and the inner surface of the open hollow composite part corresponding to the profile of the second mold body is provided with concave and / or convex components.

[0016] Compared with the prior art, the utility model achieves the following beneficial effects: the utility model is provided with a flip hoisting frame for hoisting the assembly to a set demolding station; a fixed clamping plate for limiting the relative position between the assembly and the flip hoisting frame; a demolding bracket for supporting the assembly at the demolding station, and the demolding bracket is also used to separate the assembly mold from the open hollow composite part according to a set demolding sequence; the overall structure of the tooling is simple and easy to operate, and can greatly improve the demolding efficiency of the open hollow composite part with concave and / or convex components, while reducing the damage to the appearance of the finished product caused by the demolding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a schematic diagram of the structure of a flip hoisting frame in a demoulding tooling for an open hollow composite part provided by an embodiment of the present invention; wherein (a) is a state after the flip hoisting frame is connected with a fixed card plate and a bag making platform; (b) is a state when a combined mold body, an open hollow composite part and a bag making platform are hoisted by the flip hoisting frame;

[0018] Figure 2 It is a schematic diagram of the embodiment of the utility model in which the overturning hoisting frame hoists the combined mold body, the open hollow composite material part, and the bag-making platform to the demoulding station and places them on the demoulding bracket;

[0019] Figure 3 yes Figure 2 Schematic diagram of the state after the flip hoisting frame and bag making platform are removed;

[0020] Figure 4 It is a schematic diagram of the state in which the supporting unit, the limiting unit and the demoulding unit on the demoulding bracket are respectively connected to the combined mold body;

[0021] Figure 5 is a schematic diagram of a state in which the demoulding unit extracts the first mold body from the open hollow composite part;

[0022] Figure 6 is a schematic diagram of an open hollow composite part after being separated from a second mold body;

[0023] In the figure: 1. Combined mold body; 2. Bag making platform; 3. Flip lifting frame; 4. Fixed pallet; 5. Universal lifting ring; 6. Demoulding bracket; 7. Limit fixing frame; 8. Support pallet; 9. Pallet groove; 10. Turbine screw lifter; 11. Guide rod; 12. Guide sleeve; 13. Connecting seat; 14. Screw; 15. Screw support; 16. Screw nut. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0025] Embodiment 1:

[0026] like Figure 1 to Figure 6 As shown, a demoulding tool for an open hollow composite part, the open hollow composite part is formed on a combined mold body 1 to form a combination to be demoulded, the combined mold body 1 is installed on a bag making platform 2, the inner surface of the open hollow composite part has a concave and / or convex component, and the tool comprises:

[0027] A flip hoisting frame 3 for hoisting the assembly to a set demoulding station, the flip hoisting frame 3 is connected to the bag making platform 2;

[0028] A plurality of fixing plates 4 for defining the relative position between the assembly and the flip hoisting frame 3;

[0029] The demoulding support 6 is used to support the assembly at the demoulding station. The demoulding support 6 is also used to separate the assembly mold 1 from the open hollow composite part according to a set demoulding sequence.

[0030] The fixed clamping plate 4 includes: a plurality of fixed ends connected to the flip hoisting frame 3; and a supporting end matching the outer surface contour of the open hollow composite material component and abutting against the outer surface of the open hollow composite material component.

[0031] A plurality of universal lifting rings 5 ​​are arranged on the flip lifting frame 3 .

[0032] The tilting and hoisting frame 3 is a rectangular parallelepiped structure formed by splicing a number of columns and beams.

[0033] The demoulding support 6 is provided with: a plurality of supporting units for supporting the assembly; a limiting unit for limiting the combined mold body 1; and a demoulding unit for extracting the first mold body in the combined mold body 1 from the open hollow composite part; wherein the inner surface of the open hollow composite part corresponding to the profile of the first mold body has no concave and convex components.

[0034] Each support unit includes: a support card plate 8 that matches the outer surface contour of the open hollow composite part and abuts against the outer surface of the open hollow composite part; a card plate slot 9 for installing the support card plate 8; a guide rod 11 connected to the card plate slot 9 at one end; a guide sleeve 12 connected to the demoulding bracket 6 at one end; the other end of the guide rod 11 is slidably connected to the other end of the guide sleeve 12; a driving mechanism connected to the card plate slot 9 and used to drive the support card plate 8 to approach or move away from the open hollow composite part, and the driving mechanism is installed on the demoulding bracket 6. The driving mechanism in the utility model is a turbine screw lift 10.

[0035] The limiting unit includes a limiting fixing frame 7, one side of which is connected to the demoulding bracket 6, and the other side is connected to the second mold body in the combined mold body 1; wherein the inner surface of the open hollow composite part corresponding to the molding surface of the second mold body is provided with a concave and / or convex component.

[0036] The demoulding unit comprises: a screw rod 14 and a screw rod nut 16 which is transmission-connected to the screw rod 14 ; one end of the screw rod 14 is connected to the first mold body via a connecting seat 13 ; the screw rod nut 16 is installed on the demoulding bracket 6 via a screw rod support 15 .

[0037] like Figure 1 As shown, after the open hollow composite part is solidified and formed, the vertically placed mold and the part are flipped to a horizontal state through a flip hanger composed of a combined mold body 1, a bag making platform 2, a flip hoisting frame 3, a fixed clamping plate 4, and a universal lifting ring 5.

[0038] like Figure 2 As shown, the horizontal mold and the workpiece are hoisted onto the supporting pallet 8 of the tooling, and each supporting pallet is adjusted to a suitable height so that its profile completely fits the supporting workpiece and is evenly stressed.

[0039] like Figure 3 As shown, remove the fixed connection pins and screws between the combined mold body 1 and the bag-making platform 2; remove the fixed connection screws between the two cardboards below the fixed cardboard 4 and the flip hoisting frame 3. Move away the bag-making platform 2, the flip hoisting frame 3, the fixed cardboard 4, and the universal lifting ring 5.

[0040] like Figure 4As shown, one side of the limiting fixing frame 7 is fixedly connected to the demoulding bracket 6 by screws, and the other side is connected to the lower half of the combined mold body 1 (the second mold body); the screw support 15 is installed on the end of the demoulding bracket 6 by screws, the screw 14 and the screw nut 16 are screwed together by trapezoidal threads, and then the screw nut 16 is inserted into the limiting groove of the screw support 15 and can rotate freely in the groove. When the screw nut 16 rotates, the screw 14 is engaged by the thread and thus moves axially. The front end of the screw 14 is hingedly connected to the fork ear of the connecting seat 13 by a pin, and the connecting seat 13 is fixedly connected to the upper part of the combined mold body 1 (the first mold body) by screws.

[0041] like Figure 5 As shown, the screw 14 is caused to move axially by rotating the screw nut 16. The movement of the screw 14 simultaneously drives the front end connecting seat 13 to move, thereby driving the upper part of the combined mold body 1 to move. During the movement of the upper part of the combined mold body 1, the lower part of the combined mold body 1 and the workpiece are firmly fixed by the demoulding bracket 6, the limiting fixing bracket 7, the supporting card plate 8 and other constraints and limits, so that the upper part of the combined mold body 1 is separated from the lower part and is removed from the inner cavity of the open hollow composite workpiece. After being removed from the combined mold body 1, the large end of the upper part of the combined mold body 1 is directly installed with a universal lifting ring, and the small end of the upper part of the combined mold body 1 is hoisted and removed by installing a mold hoisting plate (not shown in the figure).

[0042] like Figure 6 As shown, after the upper part of the combined mold body 1 is demolded, a large part of the cavity space is formed in the workpiece, and the large end of the lower part of the combined mold body 1 has been connected and locked with the limit fixing frame of the tooling. At this time, the handwheel of the worm screw elevator 10 is turned to drive the clamping plate groove 9, the supporting clamping plate 8 and the workpiece to lower the height, so that the convex and concave areas of the open hollow composite workpiece with concave and convex components are completely separated from the lower part of the combined mold body 1, and then the workpiece is axially moved out of the gap between the lower part of the combined mold body 1 and the supporting clamping plate 8 to be lowered, and finally an open hollow composite workpiece with concave and convex components is obtained.

[0043] In the present invention, the first mold body is characterized in that: the inner surface of the open hollow composite material part corresponding to the profile of the first mold body has no concave and convex components. The second mold body is characterized in that: the inner surface of the open hollow composite material part corresponding to the profile of the second mold body is provided with concave and / or convex components. For ease of description, the combined mold body 1 in the present invention is composed of a first mold body (the upper half of the combined mold body 1) and a second mold body (the lower half of the combined mold body 1). In actual application, both the first mold body and the second mold body can be assembled by splicing a plurality of sub-mold bodies according to the structural characteristics of the open hollow composite material part.

[0044] The demoulding tooling for open hollow composite parts in the utility model meets the demoulding requirements of open hollow composite parts with concave and convex components. The position limiting fixing frame, supporting card plate, screw rod and the like of the tooling are all connected with the demoulding bracket by screw pins and can be disassembled and assembled as required.

[0045] The upper part of the combined mold body 1 is pulled out by mechanical force through the engagement of the trapezoidal threads of the screw 14 and the screw nut 16, and the demoulding speed is uniform and controllable, and the demoulding force is balanced and reliable. After the upper part of the combined mold body 1 is ejected, the hand wheel of the turbine screw lifter can be turned to easily separate the lower part of the combined mold body 1 from the raised and recessed areas of the workpiece.

[0046] The utility model can adapt to the demoulding work of open hollow composite parts with concave and convex components of different external dimensions within a certain size range by replacing supporting pallets of different sizes and external shapes. The tooling is easy to disassemble and assemble, and the operation is simple and convenient. The operating level requirements for the operator are low, and the simple operation greatly reduces the labor intensity of the operator.

[0047] The utility model uses machined parts and standard parts with simple configuration, has a simple and compact overall structure, is easy to install and maintain, has low manufacturing cost, and works reliably. It is widely used in the demoulding process of open hollow composite parts after molding.

[0048] Embodiment 2:

[0049] Based on the demoulding tooling for an open hollow composite part described in the first embodiment, this embodiment provides a method for using the demoulding tooling for an open hollow composite part, including:

[0050] Install the flip hoisting frame 3 on the bag making platform 2, and use the fixed clamping plate 4 to define the relative position between the assembly and the flip hoisting frame 3;

[0051] The assembly is hoisted to the set demoulding station by turning over the hoisting frame 3 and placed on the demoulding bracket 6, and then the turning over the hoisting frame 3 and the bag making platform 2 are removed;

[0052] On the demoulding support 6, the combined mold body 1 is separated from the open hollow composite material part according to the set demoulding sequence, including:

[0053] adjusting the support unit to support the assembly;

[0054] Connecting the limiting unit to limit the second mold body in the combined mold body 1;

[0055] Connecting the demoulding unit to the first mold body in the combined mold body 1, and extracting the first mold body from the open hollow composite part through the demoulding unit;

[0056] Adjusting the support unit to separate the support unit from the assembly, and then separating the open hollow composite part from the second mold body, thereby completing demoulding of the open hollow composite part;

[0057] Wherein, the inner surface of the open hollow composite material part corresponding to the profile of the first mold body has no inner concave and inner convex components;

[0058] The inner surface of the open hollow composite material part corresponding to the profile of the second mold body is provided with inner concave and / or inner convex components.

[0059] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A demoulding tool for an open hollow composite part, characterized in that: The open hollow composite part is formed on a combined mold body (1) to form a combined body to be demoulded, the combined mold body (1) is mounted on a bag making platform (2), the inner surface of the open hollow composite part has a concave and / or convex component, and the tooling comprises: A flip hoisting frame (3) used for hoisting the assembly to a set demoulding station, the flip hoisting frame (3) being connected to the bag making platform (2); A plurality of fixing clamping plates (4) for defining the relative position between the assembly and the flip hoisting frame (3); A demoulding support (6) for supporting the assembly at a demoulding station, the demoulding support (6) also being used to separate the assembly mold (1) from the open hollow composite material part according to a set demoulding sequence.

2. The demoulding tool for an open hollow composite part according to claim 1, characterized in that: The fixed clamping plate (4) comprises: A plurality of fixed ends connected to the flip hoisting frame (3); A support end matches the outer surface contour of the open hollow composite material part and abuts against the outer surface of the open hollow composite material part.

3. The demoulding tool for an open hollow composite part according to claim 1, characterized in that: A plurality of universal lifting rings (5) are provided on the flip lifting frame (3).

4. The demoulding tool for an open hollow composite part according to claim 1, characterized in that: The tilting and hoisting frame (3) is a rectangular parallelepiped structure formed by splicing a plurality of columns and beams.

5. The demoulding tool for an open hollow composite part according to claim 1, characterized in that: The demoulding support (6) is provided with: A plurality of supporting units for supporting the assembly; A limiting unit for limiting the position of the combined mold body (1); A demoulding unit for extracting a first mold body in a combined mold body (1) from an open hollow composite material part; wherein the inner surface of the open hollow composite material part corresponding to the molding surface of the first mold body has no concave or convex components.

6. The demoulding tool for an open hollow composite part according to claim 5, characterized in that: Each of the support units comprises: A supporting clip (8) matching the outer surface profile of the open hollow composite material component and abutting against the outer surface of the open hollow composite material component; A card slot (9) for mounting the supporting card (8); A guide rod (11) having one end connected to the card slot (9); A guide sleeve (12) having one end connected to the demoulding bracket (6); The other end of the guide rod (11) is slidably connected to the other end of the guide sleeve (12); A driving mechanism connected to the card slot (9) and used to drive the supporting card (8) to move closer to or away from the open hollow composite part, the driving mechanism being mounted on the demoulding support (6).

7. The demoulding tool for an open hollow composite part according to claim 5, characterized in that: The limiting unit comprises a limiting fixing frame (7), one side of the limiting fixing frame (7) is connected to the demoulding support (6), and the other side is connected to the second mold body in the combined mold body (1); wherein the inner surface of the open hollow composite material part corresponding to the molding surface of the second mold body is provided with a concave and / or convex component.

8. The demoulding tool for an open hollow composite part according to claim 5, characterized in that: The demoulding unit comprises: A screw rod (14), one end of the screw rod (14) being connected to the first mold body via a connecting seat (13); A screw nut (16) is drivingly connected to the screw (14), and the screw nut (16) is mounted on the demoulding bracket (6) via a screw support (15).

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