CN111267273A - Demoulding method based on L-shaped tool - Google Patents
Demoulding method based on L-shaped tool Download PDFInfo
- Publication number
- CN111267273A CN111267273A CN202010179584.9A CN202010179584A CN111267273A CN 111267273 A CN111267273 A CN 111267273A CN 202010179584 A CN202010179584 A CN 202010179584A CN 111267273 A CN111267273 A CN 111267273A
- Authority
- CN
- China
- Prior art keywords
- tool
- shaped
- demolding
- demoulding
- steel plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
The invention belongs to the technical field of composite material component manufacturing technology, and particularly relates to a demoulding method based on an L-shaped tool. The invention provides a demoulding method based on an L-shaped tool, which uses a simple L-shaped demoulding tool to assist in completing demoulding. The L-shaped demolding tool consists of a wedge-shaped thin steel sheet on one surface and a metal steel plate with certain rigidity on one surface. By using the demoulding tool, a force action surface can be effectively provided in the demoulding process, so that the acting force is transmitted to the part through the acting surface. The lateral offset distance of the edge strip of the part to be demolded can be limited in the whole demolding process, and the shearing force applied to the corner R of the part is reduced. The demoulding operation can be rapidly and effectively completed, and the probability of the R-angle region layering defect caused by external force can be greatly reduced.
Description
Technical Field
The invention belongs to the technical field of composite material component manufacturing technology, and particularly relates to a demoulding method based on an L-shaped tool.
Background
The male die forming tool has the advantages of simple structure and low manufacturing and forming difficulty, is widely applied to the field of composite material manufacturing, and is the first choice for forming tools for structural members such as ribs, beams, frames and the like. However, the major technical bottleneck of male mold forming parts is that the demolding difficulty is high and the delamination defect is easy to generate. The composite material part generates certain resilience due to the characteristics of resin curing shrinkage, residual stress after curing, layer spreading angle deviation and the like in the manufacturing process, so that the cured part is more tightly attached to the surface of the tool, and the part is difficult to demould. The traditional demoulding method is to pry the periphery of a part by using an auxiliary tool and then knock the pryed part to realize the demoulding of the part. However, the interlayer shearing force of the composite material is weak, the area of an acting point of knocking is small during demolding, the part and the tool are easily damaged, and particularly the risk of generating a layering defect in the R-angle area of the part serving as a stressed fulcrum is great. In addition, the conventional demolding method has a problem of low efficiency.
Therefore, a new demolding method based on an L-shaped tool is needed.
Disclosure of Invention
Aiming at the defects of the traditional demoulding way, the invention aims to provide a demoulding method based on an L-shaped tool, which can solve the problem that the interlaminar damage of a composite material part formed by a male mould is caused by demoulding.
The invention provides a demoulding method based on an L-shaped tool, which uses the L-shaped demoulding tool to assist in completing demoulding. The L-shaped demolding tool consists of a wedge-shaped thin steel sheet on one surface and a metal steel plate with certain rigidity on one surface. By using the demoulding tool, a force action surface can be effectively provided in the demoulding process, so that the acting force is transmitted to the part through the acting surface. The lateral offset distance of the edge strip of the part to be demolded can be limited in the whole demolding process, and the shearing force applied to the corner R of the part is reduced. The demoulding operation can be rapidly and effectively completed, and the probability of the R-angle region layering defect caused by external force can be greatly reduced.
The technical scheme of the invention is as follows:
an L-tool based demolding method, comprising the steps of:
1. removal of auxiliary material
Removing auxiliary materials on the surface of the cured and molded composite material part, wherein the auxiliary materials comprise a vacuum bag, an air-permeable felt and an isolating membrane;
2. removing excessive glioma
Removing rubber bumps generated in gaps between the composite material part and the tool in the curing and forming process by using a rubber cleaning tool, and avoiding the influence of the residual rubber bumps on demoulding caused by the adhesion of the composite material part and the tool;
3. embedded L-shaped demolding tool
Embedding an L-shaped demolding tool at a demolding position, wherein the L-shaped demolding tool comprises a thin steel sheet 1, a metal steel plate 2 and a connecting area 3, the thin steel sheet 1 and the metal steel plate 2 are connected through the connecting area 3 to form an L shape, the thickness of the connecting area 3 is smaller than that of the metal steel plate 2, a limiting step 4 is formed at the connecting position of the connecting area 3 and the metal steel plate 2 and used for preventing the edge strip area of a part from moving outwards in the demolding process, and the end part, far away from the connecting area 3, of the thin steel sheet 1 is in a wedge shape;
the metal steel plate 2 is knocked along the vertical upward knocking direction, so that the L-shaped demolding tool is completely embedded into the composite material part, and the knocking force is prevented from being too large when one side of the thin steel sheet 1 of the L-shaped demolding tool is not completely embedded, so that the fiber is prevented from being split, and the internal quality of the part is not affected.
4. Knocking demoulding
And knocking the metal steel plate area 2 of the L-shaped demolding tool along the vertically upward knocking direction, and finally completing demolding of the composite material part.
5. Demolding tool calibration
The demolded tool is deformed by striking it and calibrated for reuse.
The invention has the advantages that:
the demoulding auxiliary fixture is used in the demoulding method based on the L-shaped tool, so that the shearing force applied to an R angle during demoulding can be controlled, and a large-area acting point can be provided for demoulding. On the one hand, the risk that defects are caused to parts by a traditional demoulding mode is reduced, and on the other hand, the production efficiency of the composite parts is improved. Specifically, the method comprises the following steps:
1. the L-shaped auxiliary demolding tool is used, so that a force acting point can be effectively provided, and the demolding efficiency is improved.
2. The L-shaped auxiliary demolding tool can provide an offset size and a limiting step in the demolding process, and the lateral offset of the edge strip area of the part is effectively controlled, so that the shearing force applied to the R-shaped angle of the part is limited. Greatly reducing the R angle layering probability of the part.
3. The method has strong practicability; the operation is simple and convenient; the tool is inexpensive to manufacture and can be reused.
Drawings
Fig. 1 is a schematic structural view of an L-shaped demolding tool used in an L-shaped tool-based demolding method provided in an embodiment of the present invention.
Fig. 2A to 2C are schematic size diagrams of an L-shaped demolding tool used in an L-shaped tool-based demolding method provided in an embodiment of the present invention, in which fig. 2A is a front view, fig. 2B is a side view, and fig. 2C is a top view.
Fig. 3 is a schematic illustration of L-shaped demolding tool insertion used in the L-shaped tool-based demolding method provided in an embodiment of the present invention.
Fig. 4 is a schematic view of a complete insertion of an L-shaped demolding tool for use in an L-shaped tool-based demolding method provided in an embodiment of the present invention.
In the figure: 1, thin steel sheets; 2, a metal steel plate; 3 a connection region; 4, limiting steps; 5, a part allowance line; 6 parts clear dimension line.
Detailed Description
The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.
It is to be understood that the appended drawings are not to scale, but are merely drawn with appropriate simplifications to illustrate various features of the basic principles of the invention. Specific design features of the invention disclosed herein, including, for example, specific dimensions, orientations, locations, and configurations, will be determined in part by the particular intended application and use environment.
In the several figures of the drawings, identical or equivalent components (elements) are referenced with the same reference numerals.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Fig. 1 is a schematic structural view of an L-shaped demolding tool used in an L-shaped tool-based demolding method provided in an embodiment of the present invention. Fig. 2A to 2C are schematic size diagrams of an L-shaped demolding tool used in the L-shaped tool-based demolding method provided in the embodiment of the present invention. Referring to fig. 1 to 2C, in the present embodiment, the L-shaped demolding tool includes a thin steel sheet 1, a metal steel sheet 2 and a connection region 3, the thin steel sheet 1 and the metal steel sheet 2 are connected by the connection region 3 to form an L shape, the thickness of the connection region 3 is smaller than that of the metal steel sheet 2, a limit step 4 is formed at a connection position of the connection region 3 and the metal steel sheet 2, and is used for preventing a part edge strip region from moving outwards in a demolding process, and an end portion of the thin steel sheet 1 away from the connection region 3 is wedge-shaped; the thin steel sheet 1 has suitable rigidity.
The size of the L-shaped demolding tool depends on the size of the rim strip of the demolded part and the specific structure of the tooling, and the specific design scheme is as follows, see fig. 2A to 2C, in this embodiment, the specific size of the L-shaped demolding tool: the thickness a of the thin steel sheet 1 is less than 2mm, so that enough rigidity is guaranteed, and the thin steel sheet can easily enter between a part and a tool; the length b of the thin steel sheet 1 is designed according to the allowance size of the part, so that the phenomenon that the overlarge size enters the clear size line 6 of the part is avoided; the thickness c of the metal steel plate 2 is about 1-5 mm; the horizontal distance d between the limiting step 4 and the thin steel sheet 1 is designed according to the actual size of the part edge strip, the size is the offset of the part edge strip area in the demoulding process, the size directly influences the stress size of the R-angle area of the part, and the limiting step 4 is used for preventing the part edge strip area from moving outwards in the demoulding process; the length e of the metal steel plate 2 is designed according to the size of the rubber hammer for demoulding and the structure of the tool, and the size provides a large enough acting surface for the demoulding process; the width f of the L-shaped demolding tool is designed according to the shape of the part, so that the demolding tool can be better contacted with the part.
In this embodiment, the specific operation steps of the demolding method based on the L-shaped tool are as follows:
firstly, removing auxiliary materials such as a vacuum bag, an air-permeable felt and an isolating membrane on the surface of the cured composite material part, and removing the adhesive nodules on the periphery of the cured part, so that the part is not bonded with the tool. The thin steel sheet 1 is inserted between the part and the tool in the appropriate position in the L-shaped demolding tool, and the specific method is shown in figure 3.
And continuously knocking to enable the thin steel sheet 1 on one side of the L-shaped demolding tool to be completely embedded between the part and the tool, and the edge strip area of the part moves by the size d along the transverse direction and is finally clamped at the position of the limiting step 4 of the L-shaped demolding tool. And continuously knocking the workpiece along the knocking direction by using a rubber hammer, and finally separating the workpiece from the tool. The specific method is shown in FIG. 4. The L-shaped demolding tool is completely inserted at a distance from the clear part dimension line 6.
Therefore, according to the demolding method based on the L-shaped tool, provided by the invention, the auxiliary materials such as the vacuum bag, the air-permeable felt and the isolating film on the surface of the cured and molded composite material part are removed and the redundant burrs are cleaned. The limit size and the limit step of the L-shaped auxiliary demolding tool are utilized to effectively control the offset size and the stress of the R angle of the demolded part, and finally, a larger knocking force point provided by the L-shaped auxiliary demolding tool is utilized to knock a demolding hammer to complete demolding.
The above description of exemplary embodiments has been presented only to illustrate the technical solution of the invention and is not intended to be exhaustive or to limit the invention to the precise form described. Obviously, many modifications and variations are possible in light of the above teaching to those skilled in the art. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to thereby enable others skilled in the art to understand, implement and utilize the invention in various exemplary embodiments and with various alternatives and modifications. It is intended that the scope of the invention be defined by the following claims and their equivalents.
Claims (1)
1. A demolding method based on an L-shaped tool is characterized by comprising the following steps:
step 1) removal of auxiliary materials
Removing auxiliary materials on the surface of the cured and molded composite material part, wherein the auxiliary materials comprise a vacuum bag, an air-permeable felt and an isolating membrane;
step 2) removing excessive glioma
Removing rubber bumps generated in gaps between the composite material part and the tool in the curing and forming process by using a rubber cleaning tool, and avoiding the influence of the residual rubber bumps on demoulding caused by the adhesion of the composite material part and the tool;
step 3) embedding an L-shaped demolding tool
Embedding an L-shaped demolding tool at the demolding position, and knocking a metal steel plate (2) of the L-shaped demolding tool along the vertical upward direction to enable the L-shaped demolding tool to be completely embedded into the composite material part;
the L-shaped demolding tool comprises a thin steel sheet (1), a metal steel plate (2) and a connecting area (3), the thin steel sheet (1) and the metal steel plate (2) are connected through the connecting area (3) to form an L shape, the thickness of the connecting area (3) is smaller than that of the metal steel plate (2), a limiting step (4) is formed at the connecting position of the connecting area (3) and the metal steel plate (2) and used for preventing the edge strip area of a part from moving outwards in the demolding process, and the end part, far away from the connecting area (3), of the thin steel sheet (1) is in a wedge shape;
step 4) knocking and demoulding
Knocking a metal steel plate area (2) of the L-shaped demolding tool along a vertically upward knocking direction to finally complete demolding of the composite material part;
step 5) calibration of demolding tool
The demolded L-shaped demolded tool is deformed by tapping and calibrated for reuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010179584.9A CN111267273A (en) | 2020-03-16 | 2020-03-16 | Demoulding method based on L-shaped tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010179584.9A CN111267273A (en) | 2020-03-16 | 2020-03-16 | Demoulding method based on L-shaped tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111267273A true CN111267273A (en) | 2020-06-12 |
Family
ID=70994487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010179584.9A Pending CN111267273A (en) | 2020-03-16 | 2020-03-16 | Demoulding method based on L-shaped tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111267273A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113843928A (en) * | 2021-09-17 | 2021-12-28 | 广联航空工业股份有限公司 | C-shaped closed angle beam forming tool and demolding method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100270074A1 (en) * | 2009-04-23 | 2010-10-28 | Yazaki Corporation | Mold structure for molding housing, method for molding housing, and housing |
| CN203496190U (en) * | 2013-09-03 | 2014-03-26 | 中航通飞华南飞机工业有限公司 | Pneumatic mould releaser specially used for composite material |
| CN105619662A (en) * | 2016-03-22 | 2016-06-01 | 菲舍尔航空部件（镇江）有限公司 | Demolding tool for aviation composite cured product |
| CN106794640A (en) * | 2014-10-07 | 2017-05-31 | 赛峰航空器发动机 | The method that the demoulding has the composite of organic substrate |
-
2020
- 2020-03-16 CN CN202010179584.9A patent/CN111267273A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100270074A1 (en) * | 2009-04-23 | 2010-10-28 | Yazaki Corporation | Mold structure for molding housing, method for molding housing, and housing |
| CN203496190U (en) * | 2013-09-03 | 2014-03-26 | 中航通飞华南飞机工业有限公司 | Pneumatic mould releaser specially used for composite material |
| CN106794640A (en) * | 2014-10-07 | 2017-05-31 | 赛峰航空器发动机 | The method that the demoulding has the composite of organic substrate |
| CN105619662A (en) * | 2016-03-22 | 2016-06-01 | 菲舍尔航空部件（镇江）有限公司 | Demolding tool for aviation composite cured product |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113843928A (en) * | 2021-09-17 | 2021-12-28 | 广联航空工业股份有限公司 | C-shaped closed angle beam forming tool and demolding method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110370676B (en) | Method for realizing co-curing of composite part with L-shaped reinforcing rib and C-shaped frame structure by using high-strength flexible tool | |
| CN110370682B (en) | Forming method of large-curvature C-shaped frame composite material part with angle section | |
| CN108819287A (en) | A kind of molding machine and forming method of Material Stiffened Panel component | |
| TW201311422A (en) | Resin molding apparatus and method for molding resin | |
| CN111267273A (en) | Demoulding method based on L-shaped tool | |
| CN108688192A (en) | A kind of C-type beam composite molding tooling and composite material C-type beam forming method | |
| CN106863661B (en) | A kind of tubular composite material parts release method | |
| CN110948906B (en) | Manufacturing process of carbon fiber automobile door outer plate | |
| JP2006515236A (en) | Method for the production of a laminate consisting of a metal layer and a fiber-reinforced plastic layer | |
| CN112356459A (en) | Forming process and device for composite automobile B column | |
| CN211334654U (en) | Forming die of carbon fiber automobile door outer panel | |
| CN114379113A (en) | I-beam forming die and forming process | |
| JPH0379314A (en) | Manufacture of optical part and mold for optical part | |
| CN201231571Y (en) | Artificial stone slab press | |
| KR100397842B1 (en) | Outside mold for manufacturing the composite guide beam | |
| CN201585061U (en) | Flat-panel TV front shell, assembly fixture and assembly device | |
| US5282911A (en) | Method of making curved insulating glazing panes | |
| CN110587868A (en) | Method for manufacturing vertical edge of main beam mold | |
| CN210233674U (en) | Die set | |
| CN109016559A (en) | One kind being used for the molding method of the U-shaped beam of composite material | |
| CN221663419U (en) | Anti-collision guardrail expansion joint SGS combined template | |
| CN102045522B (en) | Front shell of flat television, assembly equipment and manufacturing method of equipment | |
| CN221263975U (en) | Sound membrane reduction mould and sound membrane forming device with same | |
| CN220841170U (en) | Chip plastic package die | |
| WO2022034930A1 (en) | Wrinkle removal plate for use in press machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200612 |
|
| WD01 | Invention patent application deemed withdrawn after publication |