Composite skin forming tool

Abstract

The utility model relates to the field of process equipment, in particular to a composite skin forming tool. The tool comprises a plurality of die body blocks, a glue joint positioning clamping plate, an upper flange edge, a lower flange edge, an upper flange support, a lower flange support and a frame. Wherein the plurality of die body sub-blocks are of special-shaped cylindrical structures, the molded surface of a structure formed by the plurality of die body sub-blocks has multiple curvatures and multiple bends, the upper flange edge is fixed on the upper flange support, the lower flange edge is fixed on the lower flange support, one end of the glue joint positioning clamping plate is connected with the plurality of die body sub-blocks, and the other end of the glue joint positioning clamping plate is connected with the die body sub-blocks. The other end of the glue joint positioning clamping plate is connected with the frame, one ends of the mold body sub-blocks are connected with the upper flange edge, the other ends of the mold body sub-blocks are connected with the lower flange edge, and the problems that in the prior art, a special-shaped pipeline structure skin is difficult to demold and difficult to lay are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of process equipment, and particularly relates to a composite skin forming tool. BACKGROUND

[0002] The forming tool is a process equipment for hot press tank forming of composite parts, which transmits heat and pressure of the hot press tank during the curing process, so as to obtain parts with high dimensional accuracy.

[0003] At present, most of the existing conventional composite skin forming tools are panel type open types, which are simple in structure and relatively regular in mold surface, and the design of part forming and demolding scheme needs to consider and avoid fewer problems, but when the skin of the special-shaped pipeline structure is formed, the existing conventional composite skin usually adopts negative mold forming, that is, the non-pneumatic surface is molded, and the pneumatic surface is molded in the form of a bag, which reduces the demolding difficulty, but increases the operation difficulty of the worker pre-preg laying, and at the same time, the forming quality of the bag surface cannot be guaranteed. UTILITY MODEL CONTENTS

[0004] To solve the above problems, the utility model provides a composite skin forming tool, which can meet the requirements of special-shaped pipeline structure skin forming, and solve the problems of difficult demolding and laying of special-shaped pipeline structure skin.

[0005] The utility model aims to realize the following technical scheme:

[0006] The utility model provides a composite skin forming tool, which comprises a plurality of mold body blocks, a glue joint positioning clamping plate, an upper flange edge, a lower flange edge, an upper flange support, a lower flange support and a frame, wherein the plurality of mold body blocks are all in the form of a special-shaped cylindrical structure, the profile of the structure composed of the plurality of mold body blocks has multiple curvatures and multiple bends, the upper flange edge is fixed on the upper flange support, the lower flange edge is fixed on the lower flange support, one end of the glue joint positioning clamping plate is connected with the plurality of mold body blocks, the other end of the glue joint positioning clamping plate is connected with the frame, one end of the plurality of mold body blocks is connected with the upper flange edge, and the other end of the plurality of mold body blocks is connected with the lower flange edge.

[0007] Further, each of the plurality of mold body blocks is provided with the same demolding angle.

[0008] Further, the surface of the upper flange support and the frame is perpendicular, and the upper flange support is fixed on the frame through a stand column.

[0009] Further, the lower flange edge is fixed on the lower flange support, the lower flange support is a cuboid structure and the inside of the cuboid is hollowed out, and the lower flange support is fixed vertically on the frame.

[0010] Further, a forklift hole and a lifting ring are arranged in the frame, and a measurement reference hole is arranged on the top plate of the frame.

[0011] Further, the composite skin forming tool further comprises a plurality of drilling templates, each of the plurality of drilling templates is provided with a drilling template hole, a drill sleeve is installed in the drilling template hole and fixedly connected with the upper flange support or the lower flange support.

[0012] Further, the composite skin forming tool further comprises an upper laying clamping plate, the upper laying clamping plate is arranged on the upper flange edge and is a movable positioning block.

[0013] Further, the composite skin forming tool further comprises a lower laying clamping plate, the lower laying clamping plate is arranged on the lower flange edge and is a movable positioning block.

[0014] Further, the composite skin forming tool further comprises a first supporting block, and an outer surface of the first supporting block is attached to an inner cavity of the mold block.

[0015] Further, the composite skin forming tool further comprises a second supporting block, and an outer surface of the second supporting block is attached to a bottom of the mold block.

[0016] The composite skin forming tool of the utility model is different from the common straight cylinder type skin in the prior art, the composite skin forming tool of the utility model is a special-shaped cylinder structure, that is, the profile of the structure has multiple curvatures and multiple bends, in addition, due to the narrow space of the pipeline of the special-shaped cylinder structure, the composite skin forming tool of the utility model adopts a male mold forming mode, manual laying can be realized, the technical problem that manual laying cannot be realized due to the female mold forming mode in the prior art is solved, meanwhile, the composite skin forming tool of the utility model solves the problems of difficult demolding and laying of the special-shaped pipeline skin in the prior art through the ingenious block design, that is, a plurality of mold blocks are used to jointly form the pipeline forming area of the composite skin forming tool, and the technical problem of tool co-curing glue jointing is effectively solved through the setting of the glue jointing positioning clamping plate, the glue jointing quality is effectively improved, and good effects are obtained in actual application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the application, the schematic embodiments of the utility model and the description thereof are used to explain the utility model and do not constitute improper limitation on the utility model. In the drawings:

[0018] Fig. 1 is a structure view of a top view angle of the composite skin forming tool of the utility model;

[0019] Fig. 2 is a structure view of a bottom view angle of the composite skin forming tool of the utility model;

[0020] Fig. 3 is a support surface schematic view of the inner cavity support block of the composite skin forming tool of the utility model;

[0021] The figure marks are as follows: first die body block 1, second die body block 2, third die body block 3, fourth die body block 4, fifth die body block 5, sixth die body block 6, seventh die body block 7, glue joint positioning clamping plate 8, upper flange edge 9, lower flange edge 10, upper flange support 11, lower flange support 12, frame 13, first drilling die plate 14, second drilling die plate 15, third drilling die plate 16, upper laying clamping plate 17, lower laying clamping plate 18, first support block 19, second support block 20. DETAILED DESCRIPTION

[0022] In order for the personnel in the technical field to better understand the utility model scheme, the technical scheme in the utility model embodiments will be clearly and completely described below in combination with the drawings in the utility model embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the personnel in the field without creative labor should belong to the protection range of the utility model.

[0023] As shown in Figs. 1 to 3 The composite skin forming tool of the utility model embodiment is used for the process equipment of the hot press tank forming of the composite part, is different from the common straight cylinder type skin in the prior art, the composite skin forming tool of the utility model is a special-shaped cylinder structure, that is, the profile of the structure has multiple curvatures and multiple bends, and the flange edges (that is, the upper flange edge 9 and the lower flange edge 10) for connecting assembly are also arranged at both ends, the structure is complex, and there is not small challenge in the tool design and tool manufacturing, the composite skin forming tool of the utility model is used for meeting the special-shaped pipe skin forming requirement and the tool of the use performance from the usability and operability.

[0024] The composite skin forming tool of the utility model discloses a plurality of mould body blocks, glue joint positioning clamping plates 8, upper flange edges 9, lower flange edges 10, upper flange supports 11, lower flange supports 12 and frames 13, wherein the plurality of mould body blocks are all in the shape of a special-shaped cylinder, the profile of the structure formed by the plurality of mould body blocks has multiple curvatures and multiple bends, in the embodiment, the plurality of mould body blocks respectively include a first mould body block 1, a second mould body block 2, a third mould body block 3, a fourth mould body block 4, a fifth mould body block 5, a sixth mould body block 6 and a seventh mould body block 7.

[0025] In the embodiment, the materials of the first mould body block 1, the second mould body block 2, the third mould body block 3, the fourth mould body block 4, the fifth mould body block 5, the sixth mould body block 6 and the seventh mould body block 7 are all selected from Q235 steel, and are screwed and positioned on the upper flange edges 9 and the lower flange edges 10 at both ends through φ8X24 internal thread cylindrical pins and M8X16 screws.

[0026] In the embodiment, one end of the glue joint positioning clamping plate 8 is connected with the plurality of mould body blocks, and the other end of the glue joint positioning clamping plate 8 is connected with the frame 13, specifically, the material of the glue joint positioning clamping plate 8 is Q235 steel, the parts needing to be glued are positioned on the glue joint positioning clamping plate 8 through surfaces and pin holes, the glue joint positioning clamping plate 8 is welded with a circular tube to set the bagging area on the elongated circular tube, and the circular tube is screwed and positioned and fixed on the frame 13 through a base by using φ8X20 bent handle dowel pins and M8X20 screws.

[0027] In the embodiment, the upper flange edges 9 are fixed on the upper flange supports 11, and the lower flange edges 10 are fixed on the lower flange supports 12, specifically, the material of the upper flange edges 9 is Q235 steel, and after finishing, the upper flange edges 9 are screwed and positioned and fixed on the upper flange supports 11 through φ8X22 cylindrical pins and M8X12 screws, the material of the lower flange edges 10 is Q235 steel, and after finishing, the lower flange edges 10 are screwed and positioned and fixed on the lower flange supports 12 through φ8X22 cylindrical pins and M8X12 screws.

[0028] In the embodiment, the upper flange support 11 is perpendicular to the surface of the frame 13, and the upper flange support 11 is fixed on the frame 13 through a column (for example, an L-shaped column). Specifically, the material of the upper flange support 11 is Q235 steel, and the upper flange support 11 is welded with a flange steel plate and a square tube into a column, and is screwed and positioned and fixed on the frame 13 through a φ8X20 bent handle bolt and an M8X20 screw.

[0029] In the embodiment, the lower flange edge 10 is fixed on the lower flange support 12, the lower flange support 12 has a cuboid structure and is hollowed out inside the cuboid, and the lower flange support 12 is fixed vertically on the frame 13. Specifically, the material of the lower flange support 12 is Q235 steel, the lower flange support 12 is hollowed out for weight reduction, and is fixed on the frame 13 by welding.

[0030] In the embodiment, a forklift hole and a lifting ring are arranged inside the frame 13, and a measurement reference hole is arranged on the top plate of the frame 13. Specifically, the material of the frame 13 is Q235 steel, and the frame 13 is welded into a whole after cutting and blanking of a profile, and the frame 13 includes the forklift hole and the lifting ring for transfer between tooling processes. The top plate of the frame 13 is designed with measurement reference holes for quality inspection after tooling is delivered and subsequent tooling repair. The surface of the frame 13 except the top plate is sprayed with high-temperature-resistant (i.e., 250°C) silver powder paint for protection, and the tooling frame is marked with tooling figure number, product figure number and actual weight of the tooling with 100mm high red high-temperature-resistant paint around the tooling frame.

[0031] In the embodiment, the composite skin forming tooling further includes a plurality of drilling templates, each of the plurality of drilling templates is provided with a drilling template hole, and a drill sleeve is installed in the drilling template hole and fixedly connected to the upper flange support 11 or the lower flange support 12. Specifically, the plurality of drilling templates include a first drilling template 14, a second drilling template 15 and a third drilling template 16.

[0032] Specifically, the material of the first drilling template 14 is Q235 steel, a drilling template hole is made on the first drilling template 14 according to a given hole axis, a drill sleeve (for example, an HB inner diameter 6mm standard drill sleeve) is installed in the drilling template hole, and the drill sleeve is screwed and positioned on the lower flange support 12 through a φ6X25 bent handle bolt and an M8X25 screw.

[0033] Specifically, the material of the second drilling template 15 is Q235 steel, a drilling template hole is made on the second drilling template 15 according to a given hole axis, a drill sleeve (for example, an HB inner diameter 6mm standard drill sleeve) is installed in the drilling template hole, and the drill sleeve is screwed and positioned on the lower flange support 12 through a φ6X25 bent handle bolt and an M8X25 screw.

[0034] Specifically, the third drill template 16 is made of Q235 steel, drill holes are made on the third drill template 16 according to given hole axes, drill sleeves (for example, HB inner diameter 6mm standard drill sleeves) are installed in the drill holes, and the drill sleeves are positioned on the upper flange support 11 through φ6X25 bent handle bolts and M8X25 screws.

[0035] In the embodiment, the composite skin forming tooling further includes an upper laying clamp 17, which is arranged on the upper flange edge 9 and is an active positioning block. Specifically, the upper laying clamp 17 is made of Q235 steel and is used for positioning of layer-by-layer laying of a product. The upper laying clamp 17 is an active positioning block, and layer-by-layer laying of a circle of the upper flange opening of the product is completed by moving the upper laying clamp 17.

[0036] In the embodiment, the composite skin forming tooling further includes a lower laying clamp 18, which is arranged on the lower flange edge 10 and is an active positioning block. Specifically, the lower laying clamp 18 is made of Q235 steel and is used for positioning of layer-by-layer laying of a product. The lower laying clamp 18 is an active positioning block, and layer-by-layer laying of a circle of the lower flange opening of the product is completed by moving the lower laying clamp 18.

[0037] In the embodiment, the composite skin forming tooling further includes a first support block 19, and an outer surface of the first support block 19 is attached to an inner cavity of a mold block. Specifically, the first support block 19 is made of Q235 steel, and the outer surface of the first support block 19 is attached to the inner cavity of the mold block to support the mold block. Since the inner cavity of the pipeline is relatively narrow and long, and the mold block is relatively large, the tooling uses a pressure of 0.7Mpa in the curing process. The mold block is easily extruded into the inner cavity under pressure, and the mold block is locked and positioned at both ends, which causes the middle position of the mold block to be easily deformed under pressure. The first support block 19 can solve this technical problem, and the first support block 19 is screwed on the lower flange edge 10 through M8X25 screws.

[0038] In the embodiment, the composite skin forming tooling further includes a second support block 20, and an outer surface of the second support block 20 is attached to a bottom of a mold block. Specifically, the second support block 20 is made of Q235 steel, and the outer surface of the second support block 20 is attached to the bottom of the mold block to support and limit the mold block. The second support block 20 is screwed on the upper flange edge 09 through M8X25 screws.

[0039] In the embodiment, all materials of the tooling are made of Q235 steel, which is suitable for various temperature ranges from low temperature to high temperature. Steel is a relatively cheap and durable material. Experience shows that a steel tooling can still manufacture good parts after 1500 heat pressure tank curing cycles. However, the density of steel is 7850kg / m 3, very heavy, its thermal expansion coefficient (CTE) is greater than the carbon / epoxy resin composite parts made of it, the thick tooling is slow in heating rate in the autoclave, in order to save curing time and let the tooling quickly reach the required curing temperature, so the wall thickness of the tooling mold body cannot be too thick. In the embodiment, the composite skin forming tool of the utility model considers the thermal expansion coefficient and the weight of the tooling, and the wall thickness of the special-shaped pipeline is set to 15mm. When the wall thickness is set to 15mm, the tooling becomes a hollow structure, and after the composite skin is cured and formed, demolding is needed. The biggest tooling design problem of the special-shaped pipeline skin is demolding. When the normal direction along the flange edge is taken as the demolding direction, there is a large closed angle, and the special-shaped pipeline skin cannot be directly demolded from the tooling. The composite skin forming tool of the utility model analyzes the demolding of the tooling mold body, and then the mold body is processed in blocks to form a first mold body block 1, a second mold body block 2, a third mold body block 3, a fourth mold body block 4, a fifth mold body block 5, a sixth mold body block 6 and a seventh mold body block 7. In this way, the tooling mold body is convenient for demolding, and the demolding angle of the block piece is set to facilitate smooth demolding.

[0040] In the embodiment, the first mold body block 1, the second mold body block 2, the third mold body block 3, the fourth mold body block 4, the fifth mold body block 5, the sixth mold body block 6 and the seventh mold body block 7 are assembled on the upper flange edge 9, the pins are positioned, and the threaded connection is fixed. Then the lower flange edge 10 is assembled with the mold body block. In order to facilitate the laying of the special-shaped pipeline composite skin tooling, it is not necessary to be installed on the frame, and laying is directly performed in this state, and then curing is performed. After curing is completed and the tank is taken out and left, the drilling template is installed at the corresponding position, drilling is performed, and assembly positioning of the product is facilitated. After drilling, the pins and screws of the mold body are pulled out, then demolding is performed in the demolding order, the mold body blocks are taken out in sequence, and the demolding work of the special-shaped pipeline composite skin is completed.

[0041] The composite skin forming tool of the utility model is different from the common straight cylinder type skin in the prior art, and is a special-shaped cylinder structure, that is, the profile of the structure has multiple curvatures and multiple bends. In addition, due to the small space of the special-shaped cylinder structure pipeline, the composite skin forming tool of the utility model adopts a male mold forming mode, can realize manual laying, solves the technical problem that manual laying cannot be performed due to the adoption of a female mold forming mode in the prior art, and simultaneously solves the problems that the special-shaped pipeline skin is difficult to demold and is difficult to lay in the prior art. Meanwhile, the composite skin forming tool of the utility model solves the technical problem of tooling co-curing glue jointing by means of the ingenious block design, effectively improves the glue jointing quality, and obtains good effects in actual application.

[0042] The above merely describes preferred embodiments of the present application, and it should be noted that, for those skilled in the art, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered within the protection scope of the present application.

Claims

1. A composite skin forming tooling, characterized in that, The composite skin forming fixture includes: multiple mold blocks, an adhesive positioning plate, an upper flange, a lower flange, an upper flange bracket, a lower flange bracket, and a frame; wherein, each of the multiple mold blocks is an irregularly shaped cylindrical structure, and the surface of the structure formed by the multiple mold blocks has multiple curvatures and bends; the upper flange is fixed to the upper flange bracket, the lower flange is fixed to the lower flange bracket, one end of the adhesive positioning plate is connected to the multiple mold blocks, the other end of the adhesive positioning plate is connected to the frame, one end of the multiple mold blocks is connected to the upper flange, and the other end of the multiple mold blocks is connected to the lower flange.

2. The composite skin forming tooling according to claim 1, characterized in that, Each of the multiple mold blocks is provided with the same draft angle.

3. The composite skin forming tooling according to claim 1, characterized in that, The upper flange bracket is perpendicular to the surface of the frame, and the upper flange bracket is fixed to the frame by a column.

4. The composite skin forming tooling according to claim 1, characterized in that, The lower flange edge is laid flat and fixed on the lower flange bracket. The lower flange bracket has a cuboid structure and the interior of the cuboid is hollowed out. The lower flange bracket is vertically fixed on the frame.

5. The composite skin forming tooling according to claim 1, characterized in that, The frame has forklift holes and lifting rings inside, and a measuring reference hole is provided on the top plate of the frame.

6. The composite skin forming tooling according to claim 1, characterized in that, The composite skin forming fixture also includes multiple drill templates, each with a drill die hole. The drill sleeve is installed in the drill die hole and fixedly connected to the upper flange bracket or the lower flange bracket.

7. The composite skin forming tooling according to claim 1, characterized in that, The composite skin forming fixture also includes an upper mounting plate, which is disposed on the upper flange edge and serves as a movable positioning block.

8. The composite skin forming tooling according to claim 1, characterized in that, The composite skin forming tooling also includes a lower laying plate, which is disposed on the lower flange edge and is a movable positioning block.

9. The composite skin forming tooling according to claim 1, characterized in that, The composite skin forming tooling also includes a first support block, the outer surface of which is fitted with the inner cavity of the mold block.

10. The composite skin forming tooling according to claim 1, characterized in that, The composite skin forming tooling also includes a second support block, the outer surface of which is fitted to the bottom of the mold block.

Images