CN111196041B - Support device for rotary curing of composite material product with long and thin structure - Google Patents
Support device for rotary curing of composite material product with long and thin structure Download PDFInfo
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- CN111196041B CN111196041B CN202010023873.XA CN202010023873A CN111196041B CN 111196041 B CN111196041 B CN 111196041B CN 202010023873 A CN202010023873 A CN 202010023873A CN 111196041 B CN111196041 B CN 111196041B
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- 239000002131 composite material Substances 0.000 title claims abstract description 161
- 230000007246 mechanism Effects 0.000 claims abstract description 100
- 230000001681 protective effect Effects 0.000 claims description 38
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 150000002739 metals Chemical class 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 17
- 230000008569 process Effects 0.000 abstract description 17
- 238000001723 curing Methods 0.000 description 53
- 239000000835 fiber Substances 0.000 description 15
- 239000011347 resin Substances 0.000 description 14
- 229920005989 resin Polymers 0.000 description 14
- 239000003292 glue Substances 0.000 description 8
- 239000011159 matrix material Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000004804 winding Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010382 chemical cross-linking Methods 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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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
- B29C70/32—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 on a rotating mould, former or core
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
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Abstract
The invention provides a support device for rotary curing of a composite material product with an elongated structure, which comprises: the supporting mechanism is arranged below the composite material product and comprises at least one supporting roller; the roll shaft of the supporting roll is parallel to the axis of the composite material product, and the roll surface of the supporting roll is tangent to the revolution surface of the composite material product; and the first sliding locking mechanism is arranged below the supporting mechanism and is suitable for enabling the supporting mechanism to move along the axial direction of the composite material product and be locked. The support device for the rotary curing of the composite material product with the elongated structure can provide good support for the rotary curing of the composite material product with the elongated structure, reduce the deformation of the composite material product with the elongated structure caused by self weight in the curing process, and improve the straightness and the curing quality of the product.
Description
Technical Field
The invention belongs to the technical field of auxiliary devices for composite product production, and particularly relates to a supporting device for rotary curing of a composite product with a slender structure.
Background
The fiber reinforced resin matrix composite material product is one of the leading materials in the 21 st century gradually due to the characteristics of low density, high strength and the like, and has application in many fields such as aerospace, automobiles, chemical engineering, medicines, sports equipment and the like. The fiber reinforced resin matrix composite material is obtained by impregnating a resin matrix material in a fiber reinforced material and curing and molding the resin matrix material. The composite material product with a slender structure is a slender product with the axial dimension much larger than the radial dimension, the slender product is mostly prepared by a fiber winding process, and the fiber winding process is to wind continuous fibers impregnated with resin glue solution onto a core mold according to a certain rule, and then the continuous fibers are cured and demoulded to form the composite material product.
Elongated structures refer to cylindrical structures having a length to diameter ratio greater than 100, for elongated structuresThe straightness of the composite material product is one of the important evaluation indexes, and the curing process of the resin matrix material is generally completed by supporting two ends of a core mould and curing the core mould in an oven while rotating. Chinese patent document CN108177359 discloses a vacuum rotary curing device for winding-forming composite material, which winds fibers impregnated with resin glue solution onto a core mold, fixes the core mold and the product in a manner of supporting both ends, and drives the composite material product to rotate and cure through a rotary joint. Although the device can effectively solidify the resin glue solution in the rotating process, according to the deflection calculation formula of the simply supported beam, when the linear density mu and the elastic modulus E of the cylindrical core mould are fixed, the deformation epsilon and the length L under the dead weight are constant4Proportional, diameter d4The core mold length exceeds the reasonable length of the proportional relation, the straightness of the product cannot be met, and the curing quality of the composite material product is influenced; on the other hand, in the preparation process, the resin matrix material needs to undergo a rotary curing process from a liquid state to a solid state, namely, an irreversible chemical crosslinking reaction is carried out on a resin system to enable fibers and resin to be closely connected to form a composite material, and the curing process has a direct influence on the final forming of a composite material product.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a support device for the rotary curing of a composite material product with a long and thin structure, which can provide support for the rotary curing of the composite material product with the long and thin structure and ensure the straightness and curing quality of the product.
In order to solve the above problems, the present invention provides a support device for rotary curing of an elongate structural composite article, comprising:
the supporting mechanism is arranged below the composite material product and comprises at least one supporting roller; the roll shaft of the supporting roll is parallel to the axis of the composite material product, and the roll surface of the supporting roll is tangent to the revolution surface of the composite material product;
and the first sliding locking mechanism is arranged below the supporting mechanism and is suitable for enabling the supporting mechanism to move along the axial direction of the composite material product and be locked.
It should be noted that the term elongated structure as used herein refers to a cylindrical structure having a length to diameter ratio greater than 100.
The working process of the support device for the rotary curing of the composite material product with the slender structure comprises the following steps: when a winding process is used for preparing a composite material product with a long and thin structure, continuous fibers impregnated with resin glue solution are wound on a core mold according to a certain rule and then are sent to a curing process, two ends of the composite material product with the long and thin structure are supported, a supporting device for rotary curing of the composite material product with the long and thin structure is arranged below the middle part of the composite material product, and the roll surface of a supporting roll is tangent to the revolution surface of the composite material product, so that the supporting roll plays a supporting role on the product in the rotary curing process of the product with the long and thin structure, the deformation of the composite material product due to self weight is reduced, and the product is ensured to have better linearity; and a plurality of groups of supporting mechanisms can be arranged, the positions of the groups of supporting mechanisms in the axial direction of the composite material product are adjusted through the first sliding locking mechanism so as to adapt to the composite material products with different length sizes, and the slender composite material product can meet different linearity requirements by adjusting the group number and the positions of the supporting mechanisms.
The spacing between the multiple groups of supporting mechanisms can be adjusted according to the length of the composite material product and the linearity to be met, and preferably, one group of supporting mechanisms is arranged at intervals of not more than L from the end part of the composite material product;
wherein ε is the maximum acceptable deflection of the composite article; e is the elastic modulus of the core mould for the rotary curing of the composite material product; d is the diameter of the composite article; mu is the linear density of the core mould and the composite material product.
According to the deflection calculation formula of the simply supported beam, the deformation of the slender rotary structural product under the action of gravity load is
When the linear density mu and the elastic modulus E are constant, the deformation quantity epsilon and the length L of the product4Proportional, diameter d4In the inverse proportion, in order to ensure that the linearity of the composite material product is that the deformation is less than epsilon, under the condition that the composite material product, the diameter and the core mould material are not changed, the length of the composite material product is not more than L, therefore, a group of supporting mechanisms are arranged at intervals of not more than L from the end part of the composite material product, the two ends of the composite material product within the length range of not more than L can be supported, the deformation of each section of the composite material product not more than L is ensured to be less than epsilon, and the linearity of the whole composite material product with a slender structure is ensured.
Preferably, the support means are equally spaced.
The first sliding locking mechanism can enable the supporting mechanism to move along the axial direction of the composite material product and can lock the position of the supporting mechanism, and the functions can be realized by matching a sliding rail with a sliding block, matching a sliding rod with a sliding block arranged on the sliding rod and the like in the prior art.
As a preferable mode, the first slide lock mechanism includes:
the first bottom plate is an electromagnet or is made of one or more metals of iron, cobalt and nickel;
the base is fixedly arranged at the bottom of the supporting mechanism and is arranged on the first bottom plate in a sliding manner, the base is an electromagnet or is made of one or more metals of iron, cobalt and nickel, and at least one of the first bottom plate and the base is an electromagnet.
The accessible control electro-magnet is whether circular telegram to whether control it has magnetism, or through the size of adjusting its magnetism of electric current size control, therefore, when the position of needs adjustment supporting mechanism, make the electro-magnet outage of first bottom plate or base, make its magnetism disappear, the base can move on first bottom plate, make the axial displacement of base along combined material goods, after adjusting suitable position, circular telegram the electro-magnet, make the electro-magnet have strong magnetic force after, can be with firm the inhaling on first bottom plate of base, the relative frictional force between application messenger base and the first bottom plate of magnetic force increases, thereby make the rigidity on first bottom plate. The first sliding locking mechanism is simple in structure, and the position of the supporting mechanism is more convenient to adjust.
As another preferable mode, the first slide lock mechanism includes:
the sliding chute is parallel to the axis of the composite material product;
the sliding block is arranged at the bottom of the supporting mechanism and is embedded in the sliding groove in a sliding manner;
and the locking structure is arranged on the sliding groove and is suitable for fixing the position of the sliding block.
The sliding block slides in the sliding groove, so that the supporting mechanism can move at the bottom of the composite material product along the axial direction of the composite material product, and the position of the sliding block can be fixed through the locking structure, so that the supporting mechanism is fixed at the set position.
The specific implementation of the locking structure is various, and various structures for locking the position of the component are disclosed in the prior art.
As a preferable mode, the locking structure includes:
the plurality of lock holes are arranged on the side wall of the sliding chute at equal intervals;
the screw hole is arranged on the side wall of the sliding block close to the inner wall of the sliding chute;
and the bolt is suitable for being matched and locked with the screw hole.
After the position of the supporting mechanism is set by moving the sliding block, the bolt can penetrate through the lock hole in the side wall of the sliding groove and the screw hole in the sliding block, and the bolt is screwed down, so that the position of the sliding block is locked.
The concrete implementation mode of the supporting mechanism is various, for example, the supporting mechanism can be directly arranged as a square structural column top hinged supporting roller.
As a preferable mode, the support mechanism includes:
the supporting seat is used for providing bearing;
the two supporting rollers are symmetrically arranged on two sides below the composite material product;
one end of each supporting rod is hinged with one supporting roll, and the other end of each supporting rod is hinged with the top of the supporting seat; a first elastic element is connected between the upper ends of the two support rods.
Wherein the first elastic element is preferably a spring.
The two supporting rollers are arranged on the two sides of the lower portion of the composite material product, the supporting force of the two supporting rollers for the composite material product is provided by the two supporting rods, the force of the two supporting rods for the supporting rollers is balanced with the supporting force of the supporting seat for the supporting rollers and the elastic force of the first elastic element, when the outer diameter or the gravity of the composite material product is changed, the length of the spring is changed, the elastic force is changed, the included angle of the two supporting rods is changed, the integral structure is stable after the elastic force and the supporting force of the supporting rollers for the composite material product are balanced, and therefore the supporting mechanism is automatically adjusted according to the outer diameter of the composite material product and is applicable to curing of composite material products with different outer diameters.
As another preferable mode, the support mechanism includes:
the second bottom plate is used for providing a bearing surface;
the supporting part is arranged on the second bottom plate and comprises a supporting seat and a supporting roller hinged to the supporting seat;
and the second sliding locking mechanism is arranged on the second bottom plate, is arranged at the bottom of the supporting part and is suitable for enabling the supporting part to move along the direction vertical to the axial direction of the composite material product and be locked.
The position of the plurality of support portions on the second base plate can be adjusted in a direction perpendicular to the axial direction of the composite article by the second slide locking mechanism to accommodate support of composite articles having different outer diameters.
Further preferably, the number of the supporting parts is two, and the two supporting parts are symmetrically arranged on two sides below the composite material product.
As a preferred mode, the support seat includes:
the protective cover body is internally provided with a cavity, and the top of the protective cover body is provided with a through hole penetrating through the cavity;
the protective cover body is arranged in the through hole of the protective cover body in a penetrating mode, and the top of the protective cover body is suitable for arranging a supporting roller;
and the second elastic element is arranged in the cavity of the protective cover body, one end of the second elastic element is connected with the bottom of the protective cover body, and the other end of the second elastic element is connected with the protective cover body.
Wherein the second elastic element is preferably a spring.
For composite material products with different weights, the second elastic element can be automatically adjusted to be compressed by different lengths to generate different elastic forces to provide support for the composite material products, and the second elastic element can enable the pressure on the protective cover body to be buffered, so that the vibration of the support device is reduced.
Compared with the prior art, the invention has the following beneficial effects:
1. the support device for the rotary curing of the composite material product with the slender structure has the advantages that the support rollers are arranged to lift and support the middle position of the composite material product in the axial direction, so that the slender structure product can be prevented from being reduced in product linearity due to bending deformation of the core mold in the axial direction caused by self weight of the core mold due to overlong axial length, and the product is bent and deformed due to self weight of the dipped fiber in the curing process, and the cured product is reduced in axial linearity when glue solution is converted from liquid state to solid state;
2. the support device for the rotary curing of the composite material product with the slender structure is also provided with the first sliding locking mechanism, the distance of a plurality of groups of support mechanisms in the axial direction of the product can be adjusted, and the support mechanisms are arranged according to the distance, so that the linearity of the product can meet corresponding requirements;
3. the first sliding locking mechanism provided by the support device for the rotary curing of the composite material product with the slender structure is realized by matching the iron plate of the first bottom plate with the electromagnet of the base, the structure is simple, and the position adjustment is convenient and quick; the other first sliding locking mechanism is realized by matching the sliding groove, the sliding block, the locking hole, the screw hole and the bolt, and has the advantages of simple structure, strong stability and convenient and quick position adjustment;
4. the supporting mechanism provided by the supporting device for the rotary curing of the composite material product with the slender structure can realize the self-adaptive adjustment of the supporting mechanism to the composite material products with different outer diameters through the matching of the supporting roller, the supporting rod, the supporting seat and the first elastic element and the automatic adjustment of the length of the first elastic element and the included angle of the supporting rod, so that a set of device is suitable for the composite material products with different outer diameters; the other supporting mechanism is provided with a plurality of supporting parts, the supporting parts are arranged through the second sliding locking mechanism, the positions of the supporting parts can be adjusted in the direction perpendicular to the axial direction of the composite material product, so that the supporting parts can adapt to the composite material products with different outer diameters, and the composite material product can be supported in a multidirectional and more uniform manner by adjusting the positions of the supporting parts;
5. according to the support device for the rotary curing of the composite material product with the slender structure, the support seat is matched with the second elastic element through the protective cover body and the protective cover body, the compression length of the second elastic element is adjusted to adapt to products with different weights, the pressure applied to the protective cover body can be buffered, and the vibration of the support device is reduced.
Drawings
FIG. 1 is a schematic structural view of a support device for rotational curing of an elongate structural composite article according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a support mechanism in a support apparatus for rotary curing of an elongate structural composite article according to a first embodiment of the present invention;
FIG. 3 is a schematic structural view of a support device for rotary curing of an elongate structural composite article according to example two of the present invention;
FIG. 4 is a side view of a support device for rotational curing of an elongate structural composite article according to a second embodiment of the present invention;
fig. 5 is a front view of a support device for rotational curing of an elongate structural composite article according to a second embodiment of the present invention.
Wherein: 1-a support mechanism; 11-a support seat; 111-a protective cover body; 112-a protective cover; 113-a second elastic element; 12-a support roll; 13-a support bar; 14-a first elastic member; 15-a second bottom plate; 16-a support portion; 161-supporting rolls; 17-a second slide locking mechanism; 171-a chute; 172-a slide block; 173-locking hole; 174-screw hole; 175-bolt; 2-a first sliding locking mechanism; 21-a first base plate; 22-a base; 23-a chute; 24-a slide block; 25-a locking structure; 251-a keyhole; 252-screw holes; 253-bolts; 3-a composite article.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example one
As shown in fig. 1 and fig. 2, the support device for rotary curing of an elongated structural composite material product according to the present embodiment includes:
the multiple groups of supporting mechanisms 1 are arranged below the composite material product; and the first sliding locking mechanism 2 is arranged below the support mechanism 1 and is suitable for enabling the support mechanism 1 to move along the axial direction of the composite material product 3 and be locked.
The multiple groups of supporting mechanisms 1 are arranged in a group at intervals L from the end part of the composite material product,
wherein ε is the maximum acceptable deflection of the composite article; e is the modulus of elasticity of the mandrel; d is the diameter of the composite article; mu is the linear density of the core mould and the composite material product.
Specifically, each set of support mechanisms 1 includes: the support device comprises a support seat 11, two support rollers 12, two support rods 13 and a first elastic piece 14; the support base 11 includes: the protective cover comprises a protective cover body 111, a protective cover body 112 and a second elastic element 113 (spring), wherein a cavity is formed inside the protective cover body 111, a through hole penetrating through the cavity is formed in the top of the protective cover body 111, the protective cover body 112 is arranged in the through hole of the protective cover body 111 in a penetrating mode, the second elastic element 113 is arranged in the cavity of the protective cover body 111, one end of the second elastic element 113 is connected with the bottom of the protective cover body 111, and the other end of the second elastic element 113 is connected with the top of the protective cover body 112; the two supporting rollers 12 are symmetrically arranged at two sides below the composite material product 3, one end of each supporting rod 13 is hinged with one supporting roller 12, and the other end is hinged with the top of the protective cover body 112 on the supporting seat 11; a first elastic member 14 (spring) is connected between the upper ends of the two support rods 13.
Specifically, the first slide lock mechanism 2 includes: a first base plate 21, the first base plate 21 being an iron plate; the base 22 is fixedly arranged at the bottom of the supporting mechanism 1 and is arranged on the first bottom plate 21 in a sliding manner, and the base 22 is an electromagnet and can control whether the electromagnet is magnetic or not by electrifying.
The working process of the support device for the rotary curing of the composite material product with the slender structure in the embodiment is as follows: winding continuous fibers impregnated with resin glue solution on a core mold according to a certain rule, then conveying the continuous fibers to a curing process, supporting two ends of a composite material product on a curing device according to a curing method of the existing curing device, then arranging a support device for rotary curing of the composite material product with the slender structure below the composite material product, disconnecting the current of a base 22 electromagnet at the bottom of each support mechanism 1 to demagnetize the support mechanism, moving the support mechanisms 1 along the axial direction of the composite material product to enable the interval between the support mechanisms 1 to meet the requirements, then electrifying the electromagnets of the bases 22 to enable the bases 22 to be firmly attracted with an iron plate of a first bottom plate 21 to lock the positions of the support mechanisms 1, then adjusting to enable the composite material product to be placed on each support mechanism 1, wherein the roller surfaces of two support rollers 12 of each support mechanism 1 are tangent to the rotary surface of the composite material product, the first elastic element 14 automatically adjusts the length of the first elastic element, so that the elastic force of the angle of the supporting rod 13 and the supporting force of the supporting seat 11 to the supporting rod 13 balance the dead weight of the composite material product together, the composite material product is suitable for composite material products with different outer diameters or qualities, all sections of the composite material product are supported, and then the composite material product is heated and cured while rotating around a shaft through the conventional curing device.
As a specific example, the elongate structural composite article in this example had a length of 5m, a linear density of 2.46kg/m, a modulus of elasticity of 200GPa, and a diameter of 0.02m, and the rotary curing support was a set of support mechanisms disposed at intervals of 1.7m below the composite article. The long and thin structure composite material product obtained by rotary curing is tested, the integral deformation of the cured and molded product is 2mm, and the product linearity requirement is met.
The supporting device for rotary curing of the composite material product with the slender structure is provided with the supporting rollers to lift and support the middle position of the composite material product in the axial direction, so that the slender structure product can be prevented from being reduced in product linearity due to bending deformation of the core mold in the axial direction caused by self weight of the core mold due to overlong axial length, and the product is bent and deformed due to self weight of the dipped fiber in the curing process, and the cured product is reduced in axial linearity when glue solution is converted from liquid state to solid state; the device is also provided with a first sliding locking mechanism which can adjust the distance of a plurality of groups of supporting mechanisms in the axial direction of the product, and the supporting mechanisms are arranged according to the distance to ensure that the linearity of the product meets the corresponding requirements; the first sliding locking mechanism is realized by matching the iron plate of the first bottom plate with the electromagnet of the base, the structure is simple, and the position adjustment is convenient and quick; the supporting mechanism of the device can realize the self-adaptive adjustment of the supporting mechanism to composite material products with different outer diameters through the matching of the supporting roller, the supporting rod, the supporting seat and the first elastic element and through the automatic adjustment of the length of the first elastic element and the included angle of the supporting rod, so that the device can be suitable for the composite material products with different outer diameters; the supporting seat of the device is matched with the second elastic element through the protective cover body and the protective cover body, and is adapted to products with different weights through adjustment of the compression length of the second elastic element, so that the pressure applied to the protective cover body can be buffered, and the vibration of the supporting device can be reduced.
Example two
As shown in fig. 3, the support device for rotary curing of an elongated structural composite article according to the present embodiment includes:
the multiple groups of supporting mechanisms 1 are arranged below the composite material product; and the first sliding locking mechanism 2 is arranged below the support mechanism 1 and is suitable for enabling the support mechanism 1 to move along the axial direction of the composite material product 3 and be locked.
The multiple groups of supporting mechanisms 1 are arranged in a group at intervals L from the end part of the composite material product,
wherein ε is the maximum acceptable deflection of the composite article; e is the modulus of elasticity of the mandrel; d is the diameter of the composite article; mu is the linear density of the core mould and the composite material product.
As shown in fig. 4 and 5, specifically, the support mechanism 1 includes: the second bottom plate 15, two supporting portions 16 and a second sliding locking mechanism 17, the supporting portions 16 are arranged on the second bottom plate 15 and comprise supporting seats and supporting rollers 161 hinged on the supporting seats, and the structures of the supporting seats are the same as those of the first embodiment. The second sliding locking mechanism 17 includes a sliding groove 171 provided on the second base plate 15 and arranged in a direction perpendicular to the axial direction of the composite material product, a sliding block 172 provided at the bottom of the supporting base and embedded in the sliding groove 171, a plurality of locking holes 173 provided on the side wall of the sliding groove 171 at equal intervals, screw holes 174 provided on the side wall of the sliding block 172 near the inner wall of the sliding groove 171, and bolts 175 engaged with the screw holes 174.
As shown in fig. 4 and 5, specifically, the first slide lock mechanism 2 includes: spout 23, slider 24 and locking structure 25, spout 23 is parallel with the axis of combined material goods 3, and the bottom of second bottom plate 15 is located to slider 2 to sliding fit locates in spout 23, and locking structure 25 includes: a plurality of lock holes 251 arranged on the side wall of the sliding chute 23 at equal intervals, screw holes 252 arranged on the side wall of the sliding block 24 close to the inner wall of the sliding chute 23, and bolts 253.
The working process of the support device for the rotary curing of the composite material product with the slender structure in the embodiment is as follows: winding continuous fibers impregnated with resin glue solution on a core mold according to a certain rule, then conveying the core mold to a curing process, supporting two ends of a composite material product on a curing device according to a curing method of the existing curing device, then arranging a support device for rotary curing of the composite material product with the slender structure below the composite material product, loosening a bolt 253, moving a support mechanism 1 in a chute 23 along the axial direction of the composite material product to enable the interval between the support mechanisms 1 to meet the requirements, then sequentially passing the bolt 253 through a corresponding lock hole 251 and a corresponding screw hole 252 and screwing down to lock the position of the support mechanism 1, then loosening a bolt 175, moving and adjusting two support parts 16 in the chute 171 along the direction vertical to the axial direction of the composite material product, enabling the support rollers 161 of the two support parts 16 to be symmetrically positioned at two sides of the composite material product, and enabling the roller surfaces of the support rollers 161 to be tangent to the surface of the composite material product, so that the composite material product can be adapted to composite material products with different outer diameters or qualities, the support roller 161 can support the composite material product, then the bolt 175 is sequentially passed through the corresponding lock hole 173 and screw hole 174 and tightened, the positions of the two support parts 16 are fixed, and then the composite material product is heated and cured while rotating around the shaft by the existing curing device.
As a specific example, the elongate structural composite article in this example had a length of 4.8m, a linear density of 2.30kg/m, an elastic modulus of 180GPa, and a diameter of 0.02m, and the rotary curing support was a set of support mechanisms disposed every 1.7m below the composite article. The long and thin structure composite material product obtained by rotary curing is tested, the integral deformation of the cured and molded product is 1.8mm, and the product linearity requirement is met.
According to the support device for the rotary curing of the composite material product with the long and thin structure, the first sliding locking mechanism is realized through the matching of the sliding groove, the sliding block, the locking hole, the screw hole and the bolt, the structure is simple, the stability is strong, and the position adjustment is convenient and fast; the supporting mechanism of the device is provided with a plurality of supporting parts, the supporting parts are arranged through the second sliding locking mechanism, the positions of the supporting parts can be adjusted in the direction vertical to the axial direction of the composite material product, so that the supporting parts can adapt to the composite material products with different outer diameters, and the composite material product can be supported more uniformly in multiple directions by adjusting the positions of the supporting parts; the second sliding locking mechanism is realized through the matching of the sliding groove, the sliding block, the locking hole, the screw hole and the bolt, and has the advantages of simple structure, strong stability and convenient and fast position adjustment.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (9)
1. A support device for rotary curing of an elongate structural composite article, comprising:
the supporting mechanism is arranged below the composite material product and comprises at least one supporting roller; the roll shaft of the supporting roll is parallel to the axis of the composite material product, and the roll surface of the supporting roll is tangential to the surface of the composite material product;
the first sliding locking mechanism is arranged below the supporting mechanism and is suitable for enabling the supporting mechanism to move along the axial direction of the composite material product and be locked;
providing a set of said support mechanisms at a distance of no more than L from an end of said composite article;
wherein,
a maximum amount of deformation acceptable for the composite article; e is the modulus of elasticity of the mandrel; d is the diameter of the composite article; μ is the linear density of the mandrel and the composite article.
2. A support device for the rotational curing of an elongate structural composite article according to claim 1, wherein: the supporting mechanisms are arranged at equal intervals.
3. The elongate structural composite article rotational cure support apparatus of claim 1, wherein the first slide locking mechanism comprises:
the first bottom plate is an electromagnet or is made of one or more metals of iron, cobalt and nickel;
the base is fixedly arranged at the bottom of the supporting mechanism and is arranged on the first bottom plate in a sliding mode, the base is an electromagnet or is made of one or more metals of iron, cobalt and nickel, and at least one of the first bottom plate and the base is an electromagnet.
4. The elongate structural composite article rotational cure support apparatus of claim 1, wherein the first slide locking mechanism comprises:
a chute parallel to an axis of the composite article;
the sliding block is arranged at the bottom of the supporting mechanism and is embedded in the sliding groove in a sliding manner;
and the locking structure is arranged on the sliding groove and is suitable for fixing the position of the sliding block.
5. The elongate structural composite article rotational cure support apparatus of claim 4, wherein the locking structure comprises:
the plurality of locking holes are arranged on the side wall of the sliding chute at equal intervals;
the screw hole is formed in the side wall, close to the inner wall of the sliding chute, of the sliding block;
and the bolt is suitable for being matched and locked with the screw hole.
6. The elongate structural composite article rotational cure support apparatus of claim 1, wherein the support mechanism comprises:
the supporting seat is used for providing bearing;
the two supporting rollers are symmetrically arranged on two sides below the composite material product;
one end of each supporting rod is hinged with one supporting roller, and the other end of each supporting rod is hinged with the top of the supporting seat; a first elastic element is connected between the upper ends of the two support rods.
7. The elongate structural composite article rotational cure support apparatus of claim 1, wherein the support mechanism comprises:
the second bottom plate is used for providing a bearing surface;
the supporting part is arranged on the second bottom plate and comprises a supporting seat and a supporting roller hinged to the supporting seat;
and the second sliding locking mechanism is arranged on the second bottom plate and at the bottom of the supporting part, and is suitable for enabling the supporting part to move in the direction perpendicular to the axial direction of the composite material product and be locked.
8. The elongated structural composite article rotation cure support device of claim 7, wherein:
the two supporting parts are symmetrically arranged on two sides of the lower part of the composite material product.
9. The elongated structural composite article rotation cure support device of any one of claims 6-8, wherein the support base comprises:
the protective cover comprises a protective cover body, wherein a cavity is formed in the protective cover body, and a through hole penetrating through the cavity is formed in the top of the protective cover body;
the protective cover body is arranged in the through hole of the protective cover body in a penetrating mode, and the top of the protective cover body is suitable for arranging the supporting roller;
and the second elastic element is arranged in the cavity of the protective cover body, one end of the second elastic element is connected with the bottom of the protective cover body, and the other end of the second elastic element is connected with the protective cover body.
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| US7249943B2 (en) * | 2003-08-01 | 2007-07-31 | Alliant Techsystems Inc. | Apparatus for forming composite stiffeners and reinforcing structures |
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| DE102011119220A1 (en) * | 2011-11-16 | 2013-05-16 | Cotesa Gmbh | Device for manufacturing of curved components from composite material for fuselage of airplane, has translatory working drive forming curvature of carrier with semi-finished product, and stopper provided on base body for stopping carrier |
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