CN112157928A - Six-surface one-step forming lightweight shelter and preparation method thereof - Google Patents
Six-surface one-step forming lightweight shelter and preparation method thereof Download PDFInfo
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- CN112157928A CN112157928A CN202011050055.5A CN202011050055A CN112157928A CN 112157928 A CN112157928 A CN 112157928A CN 202011050055 A CN202011050055 A CN 202011050055A CN 112157928 A CN112157928 A CN 112157928A
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- 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
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
-
- 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
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
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- 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
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/36—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and impregnating by casting, e.g. vacuum casting
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/04—Enclosed load compartments ; Frameworks for movable panels, tarpaulins or side curtains
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a six-surface once-forming lightweight shelter and a preparation method thereof, wherein the six-surface once-forming lightweight shelter comprises a shelter main body, a six-surface once-forming lightweight shelter special mould, a front door, a rear door, a window body, a front door through hole and a rear door through hole which are formed in the shelter main body, wherein the shelter main body is of a hexahedral hollow structure and comprises 6 wall plates; the six-surface one-step forming lightweight shelter special die comprises an external die and an internal die; the inner cavity of the die blank formed between the external die and the internal die is the thickness of the wall plate of the formed square cabin; the six-surface one-step forming lightweight shelter and the special die thereof effectively solve the problems of large mass and easy water seepage of the shelter; the six-surface one-step forming light shelter and the preparation method thereof can solve the problems of large weight and easy water seepage of the shelter.
Description
Technical Field
The invention relates to the field of manufacturing of square cabins, in particular to a six-surface one-step forming light square cabin and a manufacturing method thereof.
Background
At present, a large plate type shelter is one of the structural forms of the existing shelter, mainly adopts composite materials as a cabin wall plate, a built-in aluminum alloy framework of the large plate type shelter still accounts for a large part of the proportion in the aspect of weight, and is connected by bolts, rivets, sealing plates and the like to form an integral structure. Although the aluminum alloy wrapping edges, the wrapping corners and the aluminum corner pieces used for splicing provide higher strength for the cabin, the carrying weight is quite large, dense rivet holes are required to be arranged on the wrapping corners of the wrapping edges for riveting during splicing, and the splicing surfaces are required to be sealed. Stress deformation in the sheet forming process and stress caused by possible external force in the using process can influence a sealing surface and even cause the condition of local water seepage.
Disclosure of Invention
The invention aims to provide a six-surface one-step forming lightweight shelter and a preparation method thereof, aiming at the defects of the prior art.
The technical scheme for solving the problems comprises the following steps: the utility model provides a six one shot forming lightweight shelter, includes the shelter main part, six one shot forming lightweight shelter special mould, qianmen, back door, the window form is seted up the qianmen through-hole in the shelter main part, back door through-hole, window hole.
The shelter main part is hexahedron hollow structure, the shelter main part includes 6 wallboards, the wallboard includes last wallboard, lower wallboard, preceding wallboard, back wallboard, left wallboard, right wallboard. The upper wall plate, the lower wall plate, the front wall plate, the rear wall plate, the left wall plate and the right wall plate are of one-step curing forming structures.
Reinforcing ribs are arranged inside and outside between the main shelter body wall plate and the wall plate, and the cross section of each reinforcing rib is in a shape of the Chinese character 'ji'. And a metal reinforcing plate is embedded in the wall plate.
Six one shot forming lightweight shelter special mould include external mould, built-in mould. And the inner cavity of the mold blank formed between the external mold and the internal mold is the thickness of the wall plate of the formed rear shelter.
The external die comprises a top plate, a bottom plate, a front plate fixedly arranged at the front end of the bottom plate, a rear plate fixedly arranged at the rear end of the bottom plate, a left side plate fixedly arranged at the left end of the bottom plate, a right side plate fixedly arranged at the right end of the bottom plate, a fixed pin for positioning, a bolt for fixing, a sealing pressing strip for sealing and a cushion block. The built-in die is fixed with the bottom plate through bolts.
The front plate and the rear plate are fixedly arranged at the front end and the rear end of the bottom plate.
The left side plate and the right side plate are fixedly arranged at the left end and the right end of the bottom plate.
The sealing pressing strip is arranged at the joint of the front plate, the left side plate and the right side plate, the sealing pressing strip is arranged at the joint of the rear plate, the left side plate and the right side plate, and the sealing pressing strip is arranged between the top of a square frame formed by the front plate, the rear plate, the left side plate and the right side plate and the top plate. The cushion block is arranged at the top of a square frame consisting of the front plate, the rear plate, the left side plate and the right side plate. The top plate is in threaded connection and sealing with the cushion block through the sealing pressing strip, and a mold blank inner cavity of the tooling mold is formed.
The back plate is provided with a preformed hole, and the built-in die moves into an inner cavity of the external die from the preformed hole of the back plate to be combined and filled.
The external mold is a female mold. The external mold and the internal mold are made of metal materials.
Preferably, the shelter main body is made of high-strength carbon fiber and reinforced high-performance epoxy resin materials.
Preferably, the front door through hole is formed in the front wall plate, the rear door through hole is formed in the rear wall plate, and the window holes are formed in the left wall plate and the right wall plate.
Preferably, the front plate and the rear plate are positioned by positioning pins, and the front plate and the rear plate are vertically fastened at the front end and the rear end of the bottom plate by bolts.
Preferably, the front plate and the rear plate are positioned by positioning pins, and the left side plate and the right side plate are vertically fastened at the left end and the right end of the bottom plate by bolts.
Preferably, the inner surface of the external mold is provided with a window frame prefabricated member.
Preferably, an outer skin layer, an electromagnetic shielding layer, a sandwich layer, an internal framework, an electromagnetic shielding layer and an inner skin layer are sequentially paved on the surface of the inner cavity of the external mold.
A preparation method of a six-surface one-step forming lightweight shelter comprises the following steps:
s1: designing a mold: the tool die for manufacturing the combined shelter integrally formed according to the design of the appearance of the shelter body of the shelter comprises an external die and an internal die, and a die blank inner cavity formed between the two sets of dies is the thickness of a wall plate of the formed shelter. The inner and outer molds are made of metal standard modules and are subjected to mirror surface treatment, wherein the outer mold is a female mold, and the size of an inner cavity is designed to be negative tolerance, generally minus 2-0 mm, according to the actual size of the cabin body. The tooling die can be combined according to the overall dimension of the square cabin, so that the standardization, the batch and the rapid forming of the universal square cabin are realized.
S2: pretreatment of a mold: the surface of the mold is polished to remove rust, oil stain and the like, and the surface is treated with a mold release agent such as TP 01.
S3: cleaning a mold: cleaning the surface of a mold formed by a six-sided rectangular cabin, cleaning and removing impurities on the mold by using a cleaning agent, coating and filling the concave part of the inner surface of the mold by using putty until the inner surface of the mold is flat and smooth and has no impurities, uniformly coating a demolding medium on the inner surface of the mold after the coating of the concave part is finished, wherein the demolding medium is coated for 2-4 times, and after the coating of the demolding medium is finished each time, waiting for natural drying, and then coating the next time. The cleaning treatment makes the inner surface of the mold smooth and flat, improves the molding effect, and reduces the difficulty of the subsequent demolding step by coating the demolding medium.
S4: preparing raw materials at the early stage: cutting out the fiber fabric which meets the shape and size of the six-face rectangular cabin body required to be prepared, and pretreating the fiber fabric, namely placing the fiber fabric in a drying oven at 105 ℃, preserving heat for 2 hours, removing a setting agent and moisture of the fiber fabric, and facilitating the later-stage forming of the fiber fabric. The framework is a carbon fiber square tube product, is formed by adopting an autoclave process, and is cut by adopting a blanking machine during combination and splicing, and the precision error is within +/-0.5 m. And preparing a door frame component and a window frame component by sequentially configuring a fixed-length sandwich layer material and an electromagnetic shielding conductive metal net according to the size of the framework.
S5: molding and assembling: laying layers on the surface of the inner cavity of the external mold, wherein the layers are an external skin layer, an electromagnetic shielding layer, a sandwich layer, an internal framework, an electromagnetic shielding layer and an internal skin layer in sequence; prepreg used by the outer skin is paved on a mould layer by layer, the lap joint width of each corner is about 5cm, and the lap joint areas of the layers are not overlapped. The electromagnetic shielding conductive copper net has 2-3 layers, and the lap joint width of the adjacent lap joint surfaces is usually 30-50 mm. Placing door frame and window frame prefabricated parts according to the required positions of the designed size; moving the internal mold into an internal cavity of the external mold from a door frame of a rear wall plate of the cabin for combined filling, and adjusting the gap size tolerance of the internal cavity reserved on the periphery through a fixing bolt; the outer skin is flatly attached to the inner surface of the external mold, and the inner skin is flatly attached to the outer surface of the internal mold, so that the surface of the prepared cabin body is flat and smooth, and six surfaces are integrated.
S6: preparation before preparation: the special six-face one-step forming light shelter mould and the shelter main body are simultaneously coated with vacuum curing auxiliary materials such as demoulding cloth and separation film vacuum bags, and a demoulding system, a flow guide system glue injection system and a sealing system are sequentially laid in the mould. The flow guide system is provided with a plurality of flow guide nets, the lap joint size of the splicing part between the flow guide nets is smaller than 3cm, and the flow guide nets are used for guiding the flow in the glue injection process, so that the materials needing to be injected in the glue injection process can be favorably led into the appointed position. A plurality of glue injection seats are arranged in the glue injection system, and the distance between every two glue injection seats is larger than 50cm, so that the glue injection operation is facilitated.
S7: and (3) evacuating gas in the mold: evacuating the interior of the mould by using a sealing system in the mould, namely tightly bonding the mould and a vacuum bag by using a sealing rubber strip, keeping the vacuum degree of the interior of the mould to be-0.95M after evacuation, keeping the vacuum degree for 15 minutes, keeping the pressure of the interior of the mould to be not lower than-0.75 Ma, and injecting substances to be added into the mould by using vacuum negative pressure.
S8: resin and curing agent injection: and (3) uniformly mixing the resin and the curing agent, and injecting the mixture into a mold through a glue injection system to diffusely wet the prefabricated member.
S9: curing treatment: and (3) sequentially carrying out normal-temperature curing and high-temperature curing on the processed prefabricated part in the die, so that the forming speed of the six-sided rectangular cabin body is increased. Wherein the temperature of normal temperature curing is 15-35 ℃, and the temperature of high temperature curing is 60-180 ℃.
S10: demolding: and demolding the prefabricated part by using a demolding system in the mold, taking out the built-in mold, placing the built-in mold on a working platform, and removing the vacuum bag, the isolation film and the demolding cloth in sequence to obtain the prepared six-sided rectangular cabin body.
S11: product installation: cabin door plate door, window body shaping adopt the same technology solidification shaping, pass through hinge spiro union assembly with the shelter main part after the shaping, and military shelter corner fittings uses standard screw to glue fixed mounting, obtains six integrated into one piece lightweight shelter and adopts six integrated into one piece preparation methods, and process scheme is simple, compares in great degree such as traditional metal shelter, the big board concatenation shelter of type of borduring and gives play advantages such as combined material's weight, high specific strength, wholeness. In addition, the prepared cabin body is high in forming speed, the product has the advantages of light weight, high strength, strong stability and the like, the weight index which is difficult to break through in the traditional large-plate square cabin technology is greatly reduced, and meanwhile, the integrity and the tightness of the square cabin are also improved.
The invention has the following beneficial effects:
the invention provides a six-surface once-formed lightweight shelter and a preparation method thereof, wherein the six-surface once-formed lightweight shelter greatly reduces the weight of a shelter body on the basis of structural strength, and simultaneously can shorten the product forming time, optimize the tedious processes of cabin body splicing and save a large amount of manpower; the six-surface once-formed lightweight shelter is manufactured in the process of a hexahedron once-formed structure by adopting shielding materials, high-strength carbon fibers and reinforced high-performance epoxy resin. The connection structure and the connected mode of having abandoned original big board-like shelter are mostly the technical form of borduring and cornerite, utilize the special mould of one shot forming lightweight shelter, the cabin body is except that the door and window is external, adopt the integrated into shape mode, each deck surface is seamless, the adhesive strength is high, the wholeness is high, full play composite's light weight high strength performance, have stress-free concentration after the shaping, characteristics such as the deflection is little possess light, excel in, the advantage that thermal insulation performance was compromise, each edges and corners need not the riveting and carry out waterproof sealing and handle and can guarantee the water tightness of the cabin body. Correspondingly embedding metal reinforcing plates with different materials and thicknesses respectively aiming at different stress bearing ranges of each wall plate, and making each reinforcing plate and the cabin body in an I-shaped resin rivet structure so that embedded parts and core materials are combined into a whole and implanted into the wall plates of the square cabin; the joint of all the surfaces outside the square cabin is provided with a corner reinforcing rib, and the corner reinforcing rib is formed by one-time curing, so that the overall structural strength of the square cabin is improved, and the matching degree of performance indexes such as load, lifting, falling and the like of the square cabin is further met.
The preparation method of the six-sided one-step forming lightweight shelter has a simple process scheme, and exerts the advantages of lightweight, high specific strength, integrity and the like of the composite material. In addition, the cabin body that prepares is fast to take shape, the product has the quality light, intensity is high, stability advantage such as strong, reduced the weight index that traditional big board shelter technique is difficult to break through by a wide margin, the wholeness of shelter has been improved, the good infiltration of resin to the prefab has been realized, the branch preparation has been solved, the shortcoming that concatenation forming technology exists again, and the mould cost of greatly reduced shelter, correspond one set of mould with a plurality of original shelter, through the design integration and one set of multi-functional group of rationalization on the mould. The maximum utilization of the die equipment is realized, the manufacturing cost is reduced, the die manufacturing period is shortened, and the method is a real embodiment of a die benefit amplifier. The manufactured capsule has good airtightness and integrity, short forming time, few post processing procedures, greatly shortened production period, greatly improved capsule performance, reduced self weight, energy conservation and emission reduction.
Drawings
FIG. 1 is a schematic view of a six-sided one-shot molded lightweight shelter;
FIG. 2 is a schematic view of a six-sided one-step forming lightweight shelter special mold;
fig. 3 is a flow chart of a shelter manufacturing method.
In the figure: 100-shelter body, 101-upper wall plate, 102-rear wall plate, 103-left wall plate, 104-reinforcing rib, 105-rear door, 106-window body, 200-external mold, 201-top plate, 202-bottom plate, 203-front plate, 204-rear plate, 205-left side plate, 206-right side plate, 207-cushion block, 208-sealing batten, 209-reserved hole opening and 210-window frame prefabricated part.
Detailed Description
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
As shown in fig. 1-2, a six-sided one-step molding lightweight shelter comprises a shelter main body 100, a six-sided one-step molding lightweight shelter special mold, a front door, a rear door 105, a window 106, a front door through hole, a rear door through hole and a window hole, wherein the front door through hole, the rear door through hole and the window hole are formed in the shelter main body 100.
As shown in fig. 1, the shelter body 100 is a hexahedral hollow structure, and the shelter body 100 includes 6 wall panels including an upper wall panel 101, a lower wall panel, a front wall panel, a rear wall panel 102, a left wall panel 103, and a right wall panel. The upper wall plate 101, the lower wall plate, the front wall plate, the rear wall plate 102, the left wall plate 103 and the right wall plate are of a one-step curing forming structure.
The front door through hole is formed in the front wall plate, the rear door through hole is formed in the rear wall plate 102, and the window holes are formed in the left wall plate 103 and the right wall plate.
Reinforcing ribs 104 are arranged inside and outside between the wall plates of the shelter main body 100, and the cross section of each reinforcing rib 104 is in a shape of 'T'.
The shelter body 100 is made of high-strength carbon fiber and reinforced high-performance epoxy resin.
The wall plate is internally embedded with a metal reinforcing plate, and the metal reinforcing plate is connected with the wall plate through an I-shaped resin rivet structure.
As shown in fig. 2, the six-sided one-step molding lightweight shelter special mold comprises an external mold 200 and an internal mold. And the inner cavity of the mold blank formed between the external mold 200 and the internal mold is the thickness of the wall plate of the formed rear shelter.
The external mold 200 includes a top plate 201, a bottom plate 202, a front plate 203 fixedly disposed at the front end of the bottom plate 202, a rear plate 204 fixedly disposed at the rear end of the bottom plate 202, a left side plate 205 fixedly disposed at the left end of the bottom plate 202, a right side plate 206 fixedly disposed at the right end of the bottom plate 202, a fixing pin for positioning, a bolt for fixing, a sealing bead 208 for sealing, and a cushion block 207. The internal mold is fixed to the base plate 202 by bolts.
The front plate 203 and the rear plate 204 are fixedly arranged at the front end and the rear end of the bottom plate 202; the front plate 203 and the rear plate 204 are positioned by positioning pins, and the front plate 203 and the rear plate 204 are vertically fastened to the front end and the rear end of the bottom plate 202 by bolts.
The left side plate 205 and the right side plate 206 are fixedly arranged at the left end and the right end of the bottom plate 202; the front plate 203 and the rear plate 204 are positioned by positioning pins, and the left side plate 205 and the right side plate 206 are vertically fastened to the left end and the right end of the bottom plate 202 by bolts.
A sealing batten 208 is arranged at the joint of the front plate 203, the left side plate 205 and the right side plate 206; a sealing pressing strip 208 is arranged at the joint of the rear plate 204, the left side plate 205 and the right side plate 206; and a sealing bead 208 is arranged between the top of the box consisting of the front plate 203, the rear plate 204, the left side plate 205 and the right side plate 206 and the top plate 201. The spacer 207 is disposed on top of the box formed by the front plate 203, the rear plate 204, the left side plate 205 and the right side plate 206. The top plate 201 is in threaded connection and sealing with the cushion block 207 through the sealing pressing strip 208 to form a mold blank inner cavity of the tooling mold.
The back plate 204 is provided with a preformed hole, and the internal mold moves into the inner cavity of the external mold 200 from the preformed hole of the back plate 204 for combination and filling.
The external mold 200 and the internal mold are made of metal materials.
The external mold 200 is a female mold. The inner surface of the external mold 200 is provided with a window frame preform 210.
An outer skin layer, an electromagnetic shielding layer, a sandwich layer, an internal framework, an electromagnetic shielding layer and an inner skin layer are sequentially paved on the surface of the inner cavity of the external mold 200.
As shown in fig. 3: a preparation method of a six-surface one-step forming lightweight shelter comprises the following steps:
s1: designing a mold: six one shot forming lightweight shelter special mould of cabin body appearance design according to the shelter body, including external mould 200 and built-in mould, the mould embryo inner chamber that forms between two sets of moulds is the wallboard thickness of shaping back shelter promptly. The internal mold and the external mold 200 are both made of metal standard modules and are subjected to mirror surface treatment, wherein the external mold 200 is a female mold, and the size of an inner cavity is designed to be negative tolerance, generally-2-0 mm, according to the actual size of the cabin body. Six one shot forming lightweight shelter special mould can make up according to shelter overall dimension size, realize that general shelter is standardized, batchization and rapid prototyping.
S2: pretreatment of a mold: the surface of a special six-surface one-step forming light-weight shelter die is polished, rust, oil stain and the like are removed, and the surface is treated by a release agent such as TP 01.
S3: cleaning a mold: cleaning the surface of a special six-surface one-step forming lightweight shelter mold, cleaning and removing impurities on the mold by using a cleaning agent, coating and filling the concave part of the inner surface of the mold by using putty until the inner surface of the mold is flat and smooth and has no impurities, uniformly coating a demolding medium on the inner surface of the mold after the coating of the concave part is finished, wherein the demolding medium is coated for 2-4 times, and after the coating of the demolding medium is finished every time, waiting for natural drying, and then coating next time. The cleaning treatment makes the inner surface of the mold smooth and flat, improves the molding effect, and reduces the difficulty of the subsequent demolding step by coating the demolding medium.
S4: preparing raw materials at the early stage: the fiber fabric of the six-face one-step forming lightweight shelter, which meets the requirement, is cut out, and is pretreated, namely, the fiber fabric is placed in a drying oven at 105 ℃, the heat is preserved for 2 hours, the setting agent and the moisture of the fiber fabric are removed, and the later-stage forming of the fiber fabric is facilitated. The framework is a carbon fiber square tube product, is formed by adopting an autoclave process, and is cut by adopting a blanking machine during combination and splicing, and the precision error is within +/-0.5 m. And preparing a door frame component and a window frame component by sequentially configuring a fixed-length sandwich layer material and an electromagnetic shielding conductive metal net according to the size of the framework.
S5: molding and assembling: laying layers on the surface of the inner cavity of the external mold 200, namely an outer skin layer, an electromagnetic shielding layer, a sandwich layer, an internal framework, the electromagnetic shielding layer and an inner skin layer in sequence; prepreg used by the outer skin is paved on a mould layer by layer, the lap joint width of each corner is about 5cm, and the lap joint areas of the layers are not overlapped. The electromagnetic shielding conductive copper net has 2-3 layers, and the lap joint width of the adjacent lap joint surfaces is usually 30-50 mm. Placing door frame and window frame prefabricated members 210 according to the required positions of the design size; moving the internal mold from the preformed hole 210 into the inner cavity of the external mold 200 for combination and filling, and adjusting the gap size tolerance of the circumferential preformed inner cavity through a fixing bolt; the outer skin is flatly attached to the inner surface of the external mold 200, and the inner skin is flatly attached to the outer surface of the internal mold, so that the surface of the prepared cabin body is flat and smooth, and six surfaces are integrated.
S6: preparation before preparation: the special six-face one-step forming light shelter mould and the shelter main body 100 are simultaneously coated with vacuum curing auxiliary materials such as demoulding cloth and separation film vacuum bags, and a demoulding system, a flow guide system glue injection system and a sealing system are sequentially laid in the mould. The flow guide system is provided with a plurality of flow guide nets, the lap joint size of the splicing part between the flow guide nets is smaller than 3cm, and the flow guide nets are used for guiding the flow in the glue injection process, so that the materials needing to be injected in the glue injection process can be favorably led into the appointed position. A plurality of glue injection seats are arranged in the glue injection system, and the distance between every two glue injection seats is larger than 50cm, so that the glue injection operation is facilitated.
S7: and (3) evacuating gas in the mold: the interior of the special mould is evacuated by using a sealing system in the six-face one-step forming lightweight shelter special mould, namely, the mould is tightly bonded with a vacuum bag by using a sealing rubber strip, the vacuum degree in the mould reaches-0.95M after evacuation, the internal pressure of the mould is not lower than-0.75 Ma after the vacuum degree is maintained for 15 minutes, and substances needing to be added are injected into the mould by using vacuum negative pressure.
S8: resin and curing agent injection: and after being uniformly mixed, the resin and the curing agent are injected into a six-surface one-step forming lightweight shelter special mold through an injection system to moisten the prefabricated part in a flooding way.
S9: curing treatment: and (3) sequentially carrying out normal-temperature curing and high-temperature curing on the processed prefabricated part in the die, so that the forming speed of the six-sided rectangular cabin body is increased. Wherein the temperature of normal temperature curing is 15-35 ℃, and the temperature of high temperature curing is 60-180 ℃.
S10: demolding: and demolding the prefabricated part by using a demolding system in the mold, taking out the built-in mold, placing the built-in mold on a working platform, and removing the vacuum bag, the isolation film and the demolding cloth in sequence to obtain the prepared six-sided rectangular cabin body.
S11: product installation: the door plate door and the window body are molded by the same process, are assembled with the shelter main body 100 through the hinge bolt connection after molding, and are fixedly installed by standard screws with glue for military shelter angle pieces.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.
Claims (9)
1. The utility model provides a six one shot forming lightweight shelter which characterized in that: the square cabin comprises a square cabin body (100), six-face once-forming lightweight square cabin special dies, a front door, a rear door (105), a window body (106), a front door through hole, a rear door through hole and a window hole, wherein the front door through hole, the rear door through hole and the window hole are formed in the square cabin body (100);
the shelter main body (100) is of a hexahedral hollow structure, the shelter main body (100) comprises 6 wall plates, and the wall plates comprise an upper wall plate (101), a lower wall plate, a front wall plate, a rear wall plate (102), a left wall plate (103) and a right wall plate; the upper wall plate (101), the lower wall plate, the front wall plate, the rear wall plate (102), the left wall plate (103) and the right wall plate are of one-step curing forming structures; the six-surface one-step forming lightweight shelter special die comprises an external die (200) and an internal die;
the external mold (200) comprises a top plate (201), a bottom plate (202), a front plate (203) fixedly arranged at the front end of the bottom plate (202), a rear plate (204) fixedly arranged at the rear end of the bottom plate (202), a left side plate (205) fixedly arranged at the left end of the bottom plate (202), a right side plate (206) fixedly arranged at the right end of the bottom plate (202), a fixed pin for positioning, a bolt for fixing, a sealing pressing strip (208) and a cushion block (207) for sealing; the built-in die is fixed with the bottom plate (202) through bolts;
the front plate (203) and the rear plate (204) are fixedly arranged at the front end and the rear end of the bottom plate (202); the left side plate (205) and the right side plate (206) are fixedly arranged at the left end and the right end of the bottom plate (202);
a sealing pressing strip (208) is arranged at the joint of the front plate (203), the left side plate (205) and the right side plate (206); a sealing pressing strip (208) is arranged at the joint of the rear plate (204), the left side plate (205) and the right side plate (206); a sealing pressing strip (208) is arranged between the top of a frame consisting of the front plate (203), the rear plate (204), the left side plate (205) and the right side plate (206) and the top plate (201); the cushion block (207) is arranged at the top of a square frame consisting of the front plate (203), the rear plate (204), the left side plate (205) and the right side plate (206).
2. The six-sided one-shot molded lightweight shelter of claim 1, wherein: reinforcing ribs (104) are arranged between the wall plate of the shelter main body (100) and the wall plate and outside the shelter main body, and the cross section of each reinforcing rib (104) is of a "" shape; a metal reinforcing plate is embedded in the wall plate; the shelter main body (100) is made of high-strength carbon fibers and reinforced high-performance epoxy resin materials.
3. The six-sided one-shot molded lightweight shelter of claim 1, wherein: the front door through hole is formed in the front wall plate, the rear door through hole is formed in the rear wall plate (102), and the window holes are formed in the left wall plate (103) and the right wall plate.
4. The six-sided one-shot molded lightweight shelter of claim 1, wherein: the external mold (200) and the internal mold are made of metal materials; the external mold (200) is a female mold.
5. The six-sided one-shot molded lightweight shelter of claim 1, wherein: the front plate (203) and the rear plate (204) are positioned by positioning pins, and the front plate (203) and the rear plate (204) are vertically fastened to the front end and the rear end of the bottom plate (202) by bolts; the front plate (203) and the rear plate (204) are positioned through positioning pins, and the left side plate (205) and the right side plate (206) are vertically fastened to the left end and the right end of the bottom plate (202) through bolts.
6. The six-sided one-shot molded lightweight shelter of claim 1, wherein: the rear plate (204) is provided with a preformed hole.
7. The six-sided one-shot molded lightweight shelter of claim 1, wherein: the inner surface of the external mold (200) is provided with a window frame prefabricated part (210).
8. The six-sided one-shot molded lightweight shelter of claim 1, wherein: an outer skin layer, an electromagnetic shielding layer, a sandwich layer, an internal framework, an electromagnetic shielding layer and an inner skin layer are sequentially paved on the surface of an inner cavity of the external mold (200).
9. A six-surface one-step forming lightweight shelter manufacturing method is characterized by comprising the following steps: the method comprises the following steps:
s1: designing a mold: designing six-face once-forming lightweight shelter special dies according to the shape of a shelter body of the shelter, wherein the six-face once-forming lightweight shelter special dies comprise an external die (200) and an internal die, and a die blank inner cavity formed between the two sets of dies is the thickness of a wall plate of a formed shelter; the internal mold and the external mold (200) are both made of metal standard modules and are subjected to mirror surface treatment, wherein the external mold (200) is a female mold, and the size of an inner cavity is designed to be negative tolerance according to the actual size of the cabin body and is generally-2-0 mm; the special six-surface one-step forming lightweight shelter mould can be combined according to the overall dimension of the shelter, so that the standardization, the batch and the rapid forming of the general shelter are realized;
s2: pretreatment of a mold: polishing the surface of a special six-surface one-step forming lightweight shelter mould, removing rust, oil stains and the like, and treating the surface with a mold release agent such as TP01 and the like;
s3: cleaning a mold: cleaning the surface of a special six-face once-formed lightweight shelter mould, firstly cleaning and removing impurities on the mould by using a cleaning agent, coating and filling the concave part of the inner surface of the mould by using putty until the inner surface of the mould is flat and smooth and has no impurities, uniformly coating a demoulding medium on the inner surface of the mould after the concave part is coated, wherein the demoulding medium is coated for 2-4 times, and after the coating of the demoulding medium is finished each time, carrying out next coating after waiting for natural drying; the cleaning treatment makes the inner surface of the mold smooth and flat, the molding effect is improved, and the difficulty of the subsequent demolding step is reduced by coating the demolding medium;
s4: preparing raw materials at the early stage: cutting out a fiber fabric which meets the shape and size of a six-face once-forming lightweight shelter to be prepared, and pretreating the fiber fabric, namely placing the fiber fabric in a drying oven at the temperature of (105) DEG C, preserving heat for 2 hours, removing a setting agent and water of the fiber fabric, and facilitating the later-stage forming of the fiber fabric; the framework is a carbon fiber square tube product, is molded by adopting an autoclave process, and is cut by adopting a blanking machine during combination and splicing, wherein the precision error is within +/-0.5 m; preparing a door frame assembly and a window frame assembly by sequentially configuring a fixed-length sandwich layer material and an electromagnetic shielding conductive metal mesh according to the size of the framework;
s5: molding and assembling: laying layers on the surface of an inner cavity of the external mold (200), wherein the layers are an outer skin layer, an electromagnetic shielding layer, a sandwich layer, an internal framework, the electromagnetic shielding layer and an inner skin layer in sequence; the prepreg used by the outer skin is paved on a mould layer by layer, the lap joint width of each corner is about 5cm, and the lap joint areas of the layers are not overlapped; 2-3 layers of electromagnetic shielding conductive copper mesh layers are provided, and the lap joint width of adjacent lap joint surfaces is noted and is generally 30-50 mm; placing door frame and window frame prefabricated members (210) according to the design size requirement; moving the internal mold into the inner cavity of the external mold (200) from the preformed hole (210) for combination and filling, and adjusting the gap size tolerance of the circumferential preformed inner cavity through a fixing bolt; the outer skin is flatly attached to the inner surface of the external mold (200), and the inner skin is flatly attached to the outer surface of the internal mold, so that the surface of the prepared cabin body is flat and smooth, and a six-surface integral body is formed;
s6: preparation before preparation: simultaneously coating vacuum curing auxiliary materials such as demolding cloth, a separation film vacuum bag and the like on a six-face once-molded lightweight shelter special die and a shelter main body (100), and sequentially laying a demolding system, a diversion system glue injection system and a sealing system in the die; the diversion system is internally provided with a plurality of diversion nets, the lap joint size of the splicing part between the diversion nets is less than 3cm, and the diversion nets are used for diversion in the glue injection process, so that the materials needing to be injected in the glue injection process can be conveniently led into the appointed position; the glue injection system is internally provided with a plurality of glue injection seats, and the distance between every two glue injection seats is more than 50cm, so that the glue injection operation is facilitated;
s7: and (3) evacuating gas in the mold: evacuating the interior of the special mould by using a sealing system in the six-face once-forming lightweight shelter special mould, namely tightly bonding the mould and a vacuum bag by using a sealing rubber strip, keeping the vacuum degree in the mould to be-0.95M after evacuation, keeping the vacuum degree for 15 minutes, keeping the pressure in the mould to be not lower than-0.75 Ma, and injecting substances to be added into the mould by using vacuum negative pressure;
s8: resin and curing agent injection: uniformly mixing resin and a curing agent, and injecting the mixture into a six-surface one-step forming lightweight shelter special mold through an injection system to diffusely wet the prefabricated member;
s9: curing treatment: the processed prefabricated part in the die is sequentially cured at normal temperature and high temperature, so that the forming speed of the six-sided rectangular cabin body is increased; wherein the temperature of normal temperature curing is 15-35 ℃, and the temperature of high temperature curing is 60-180 ℃;
s10: demolding: demoulding the prefabricated part by using a demoulding system in the mould, taking out the built-in mould, placing the built-in mould on a working platform, and removing a vacuum bag, an isolation film and demoulding cloth in sequence to obtain a prepared six-sided rectangular cabin body;
s11: product installation: the door plate door and the window body are molded by the same process, are assembled with the shelter main body (100) through the hinge bolt connection after molding, and are fixedly installed by standard screws with glue for military shelter corner fittings.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114524024A (en) * | 2021-12-28 | 2022-05-24 | 杭州华聚复合材料有限公司 | New energy logistics vehicle, compartment and side plate assembling method |
| CN115091791A (en) * | 2022-06-17 | 2022-09-23 | 中国船舶重工集团公司第七二五研究所 | Vacuum auxiliary forming positioning tool and process |
| CN115515410A (en) * | 2022-09-28 | 2022-12-23 | 北京航空航天大学 | Light-weight magnetic shielding room based on iron-based amorphous material |
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2020
- 2020-09-29 CN CN202011050055.5A patent/CN112157928A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114524024A (en) * | 2021-12-28 | 2022-05-24 | 杭州华聚复合材料有限公司 | New energy logistics vehicle, compartment and side plate assembling method |
| CN114524024B (en) * | 2021-12-28 | 2023-01-24 | 浙江华聚复合材料有限公司 | New energy logistics vehicle, compartment and side plate assembling method |
| CN115091791A (en) * | 2022-06-17 | 2022-09-23 | 中国船舶重工集团公司第七二五研究所 | Vacuum auxiliary forming positioning tool and process |
| CN115091791B (en) * | 2022-06-17 | 2024-05-28 | 中国船舶重工集团公司第七二五研究所 | Vacuum auxiliary forming positioning tool and process |
| CN115515410A (en) * | 2022-09-28 | 2022-12-23 | 北京航空航天大学 | Light-weight magnetic shielding room based on iron-based amorphous material |
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