CN116901486A - Preparation method and device of plate spring body based on winding and HP-RTM (high-pressure-real time kinematic) and plate spring body - Google Patents
Preparation method and device of plate spring body based on winding and HP-RTM (high-pressure-real time kinematic) and plate spring body Download PDFInfo
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- CN116901486A CN116901486A CN202310868109.6A CN202310868109A CN116901486A CN 116901486 A CN116901486 A CN 116901486A CN 202310868109 A CN202310868109 A CN 202310868109A CN 116901486 A CN116901486 A CN 116901486A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/18—Leaf springs
-
- 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
- B29C70/545—Perforating, cutting or machining during or after moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/02—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only
- B60G11/10—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
- B60G11/113—Mountings on the axle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/721—Vibration dampening equipment, e.g. shock absorbers
Abstract
The application provides a method and a device for manufacturing a plate spring body based on winding and HP-RTM and the plate spring body. The method comprises the following steps: winding the fiber filaments into fiber loops by using a first positioning assembly and a second positioning assembly; laying the fiber ring carrying the first positioning component and the second positioning component in a groove of a die to obtain a preformed structure; closing the mold with a cover plate of the mold; then vacuumizing the die and injecting resin material into the groove at a preset pressure; curing the resin material by pressurizing and heating to obtain a structure to be cut; and cutting two ends of the structure to be cut, including the first positioning component and the second positioning component, to obtain the plate spring body. According to the application, the winding process and the HP-RTM forming process are combined, so that the leaf spring body meeting the mechanical property requirement can be produced on the basis of controlling the time cost.
Description
Technical Field
The application relates to the technical field of preparation of plate spring bodies for automobiles, in particular to a preparation method and device of a plate spring body based on winding and HP-RTM and the plate spring body.
Background
With the increasing consumption of fossil energy and the increasing emphasis on environmental problems worldwide, the speed of innovation of new materials and technologies in the automotive industry is increasing. The automobile is light, so that the consumption of fossil energy by people can be greatly reduced, the cargo carrying capacity of the automobile can be improved, and the service efficiency of the automobile is improved. Besides the characteristics of light weight and high strength, the composite material also has better shock absorption and fatigue life, so that the composite material is widely applied in the field of automobiles.
The composite material is widely studied by a plurality of automobile manufacturers in recent years as a plate spring material for automobiles, and is commercially applied to part of automobile types. The molding process of the composite plate spring is generally classified into a continuous Filament Winding (Filament Winding) process and a die pressing (Compressing Molding) process.
The composite plate spring developed by most manufacturers adopts a die pressing process, the precision is high relative to that of a fiber winding process, the surface is smooth after the product is molded, and secondary processing is not needed. The high pressure resin transfer molding (High Pressure Resin Transfer Molding, HP-RTM) forming process is a typical molding process. Specifically, a preformed fiber reinforced material is put into a mold cavity, the mold is required to be sealed and fastened at the periphery, and the resin can flow smoothly inside; and (3) injecting quantitative resin under a certain pressure after sealing the mould, and demoulding after the resin is solidified to obtain a desired product.
However, for the molding process, since the preformed reinforcing fiber material needs to be impregnated by the injected resin flowing in the sealed mold after the mold is sealed, if the resin does not flow smoothly, the performance of the plate spring body is affected. In general, a structure for facilitating resin flow needs to be specially involved in the mold, but the equipment development cost of the mold is excessively high, which increases the manufacturing cost of the leaf spring body.
Therefore, there is a need in the art for a method of manufacturing a leaf spring body to improve the mechanical properties of the leaf spring body and reduce the manufacturing cost of the leaf spring body.
Disclosure of Invention
The application provides a preparation method and device of a plate spring body based on winding and HP-RTM and the plate spring body, which can improve the mechanical property of the plate spring body and reduce the preparation cost of the plate spring body.
In a first aspect, the present application provides a method for manufacturing a leaf spring body based on winding and HP-RTM, comprising:
winding the fiber filaments into fiber loops by using a first positioning assembly and a second positioning assembly;
paving the fiber ring carrying the first positioning component and the second positioning component in a groove of a die to obtain a preformed structure;
Closing the mould with a cover plate of the mould;
vacuumizing the die and injecting resin material into the groove at a preset pressure;
curing the resin material by pressurizing and heating to obtain a structure to be cut;
and cutting two ends of the structure to be cut, including the first positioning component and the second positioning component, to obtain the plate spring body.
In a second aspect, the present application provides a manufacturing apparatus for a plate spring body based on winding and compression molding, comprising:
the first positioning assembly and the second positioning assembly are used for winding the fiber layers into fiber loops;
a die, the upper surface of the die being provided with a groove for accommodating the fiber loop carrying the first positioning assembly and the second positioning assembly;
the cover plate is used for sealing the die;
the resin injection device is used for vacuumizing the die and injecting resin materials into the grooves at a preset pressure;
a pressurizing and heating device for pressurizing and heating the resin material;
And the cutting device is used for cutting the structure to be cut after the curing device cures the resin material so as to obtain the plate spring body.
In a third aspect, the present application provides a leaf spring body prepared based on the preparation method described in the first aspect or prepared by the preparation device described in the second aspect.
In a fourth aspect, there is provided a leaf spring assembly comprising:
the leaf spring body prepared according to the method of the third aspect or any one of the possible implementation manners of the third aspect, wherein two ends of the leaf spring body are nested on leaf spring seats, the leaf spring seats are fixedly connected with the frame, and the middle part of the leaf spring body is fixed on the axle through a U-shaped bolt.
In a fifth aspect, there is provided a leaf spring assembly comprising:
the plate spring body prepared according to the method in the third aspect or any one of the possible implementation manners of the third aspect, wherein the two ends of the plate spring body are fixedly provided with metal rolling lugs, the metal rolling lugs are fixedly connected with the frame, and the middle part of the plate spring body is fixed on the axle through a U-shaped bolt.
In the embodiment, the winding process and the mould pressing process are combined, namely, the fiber loop carrying the first positioning component and the second positioning component is paved in the groove of the mould, so that the fiber filaments can be regularly paved in the groove of the mould, and after the resin material is injected into the groove, the smooth flow of the resin material in the sealed mould is facilitated; on the one hand, the air bag can be prevented from being caused by too complex staggered structure of the fiber yarns, and the mechanical property of the plate spring body is improved; on the other hand, the smooth flow of the resin material in the sealed mold is ensured by regularizing the fiber yarn in the mold, so that the structure for improving the smooth flow degree of the resin material is additionally arranged in the mold, and the preparation cost of the plate spring body is reduced.
In short, compared with the compression molding process, the winding and compression molding process provided by the application can improve the mechanical property of the plate spring body and reduce the preparation cost of the plate spring body.
Drawings
Fig. 1 is a schematic side view of a leaf spring assembly provided by the present application.
Fig. 2 is a schematic side view of a composite leaf spring body provided by the present application.
Fig. 3 is a schematic flow chart of a method for manufacturing a winding and HP-RTM based leaf spring body provided by the application.
Fig. 4 is a schematic side view of a fiber loop carrying a first positioning assembly and a second positioning assembly provided by the present application.
Fig. 5 is a schematic side view of a mold provided by the present application.
Fig. 6 is a schematic side view of a cover plate provided by the present application.
Fig. 7 is a schematic side view of the contact location of the cover plate and the mold provided by the present application.
Detailed Description
It should be noted that the following examples are only illustrative of the solution provided by the present application and should not be construed as limiting the scope of the present application. For example, the examples are not to be construed as specifying a particular technique or condition, as described in the literature in the field, or as per the product specifications. As another example, the reagents or apparatus used in connection with the present application may be conventional products available commercially without the manufacturer's attention. In addition, for convenience of explanation, the same reference numerals denote the same components with respect to the related drawings to which the present application relates, and detailed explanation of the same components is omitted in different embodiments for brevity.
In order to facilitate the understanding of the solution according to the application, the concept of the composite leaf spring body will be described.
Composite material: refers to a material which is formed by compounding two or more materials when the material can not meet the use requirement and can meet the requirement of people.
By way of example, glass fibers, while strong, are loose between fibers, can only withstand tensile forces, cannot withstand bending, shearing and compressive stresses, and are not easily formed into a fixed geometry, and are loose. If glass fibers are bonded together with synthetic resin, a glass fiber reinforced plastic matrix composite can be formed that can be formed into a variety of rigid articles having a fixed shape that can withstand both tensile and bending, compressive and shear stresses. Since the glass fiber reinforced plastic-based composite material has strength equivalent to steel, contains glass components, and also has properties such as color, shape, corrosion resistance, electrical insulation, heat insulation, and the like, which may also be referred to as "glass fiber reinforced plastic".
The composite material consists of a reinforcing material and a matrix material. For example, for reinforced concrete composites, the concrete is the matrix and the reinforcement is the reinforcing material.
Wherein the matrix material includes, but is not limited to, epoxy resin, polyester resin, thermoplastic resin, etc. For example, the matrix material may be a resin matrix, i.e. a matrix of a resin-based composite material. The resin matrix refers to a glue solution system composed of resin and a curing agent. As an example, the resin matrix may include a thermosetting resin and a thermoplastic resin. Thermosetting resins can only be heated and molded once, and cure during processing to form insoluble network crosslinked polymer compounds, and therefore cannot be regenerated. The resin matrix of the composite material is mainly thermosetting resin. Thermoset resins include, but are not limited to: phenolic resins, urea-formaldehyde resins, melamine-formaldehyde resins, epoxy resins, unsaturated resins, polyurethanes, polyimides, and the like. Reinforcing materials include, but are not limited to, carbon fibers, glass fibers, aramid fibers, and the like.
Reinforcing materials include, but are not limited to, carbon fibers, glass fibers, aramid fibers, and the like. The reinforcing material may be reinforcing fibers (reinforcing fibers), i.e., a reinforcement of a resin-based composite material. By way of example, the reinforcing material comprises, geometrically: particulate, one-dimensional fibrous, two-dimensional lamellar (e.g., felt), and three-dimensional steric structures. Inorganic reinforcing materials and organic reinforcing materials are classified by properties, and may be synthetic or natural. The inorganic reinforcing material may be fibrous, such as inorganic glass fibers, carbon fibers, and ceramic fibers such as a small amount of silicon carbide, and the organic reinforcing material includes aramid fibers (aramid fibers) and the like.
As an example, the reinforcing material of the composite plate spring body according to the present application may be glass fiber, carbon fiber, or a fiber bundle composed of glass fiber and carbon fiber, and the matrix material may be a material such as epoxy resin, or may be referred to as a fiber-reinforced plastic (FRP) plate spring body.
Compared with the metal plate spring body, the composite plate spring body has the advantages of high strength, good temperature resistance, good impact resistance, strong designability, weight reduction of more than 70%, safe fracture and the like, so that the smoothness and the comfort of a vehicle can be greatly improved by using the composite plate spring body, the quality is only about 1/4 of that of the plate spring body, the fuel efficiency is effectively improved, the service life of the plate spring body is prolonged, namely, the plate spring body does not need to be replaced in the service life of the whole vehicle, and the use cost and the maintenance cost of the whole vehicle are relatively low.
The installation of the composite plate spring body is similar to the installation of the plate spring, and the middle part needs to be fixed on the axle like the plate spring, and the two ends are connected on the vehicle body.
The leaf spring assembly provided by the present application will be described with reference to fig. 1.
Fig. 1 is a schematic side view of a leaf spring assembly provided by the present application.
As shown in fig. 1, the leaf spring assembly includes a leaf spring body 100, the middle portion of which leaf spring body 100 can be secured to a coupler 260 of an axle 250 by two U-bolts and nuts (e.g., U-bolt 230 and the nut of U-bolt 230 shown in the figures). The ends of the leaf spring body 100 may be nested within the spring mounts (the spring mount 210 and the spring mount 220 as shown) that are secured to the frame. Of course, in another implementation, the two ends of the plate spring body 100 may also be fixedly provided with metal rolling lugs fixedly connected with the frame, and the middle part of the plate spring body is fixed on the axle through a U-shaped bolt.
The composite plate spring body provided by the application is described below.
Fig. 2 is a schematic structural view of a composite plate spring body 100 provided by the present application.
As shown in fig. 2, the plate spring body 100 has a parabolic structure, the convex surface of the plate spring body 100 is the upper surface of the plate spring body 100, the concave surface of the plate spring body 100 is the lower surface of the plate spring body 100, and a side surface of the plate spring body 100 is formed between the upper surface of the plate spring body 100 and the lower surface of the plate spring body 100. The leaf spring body 100 can be arranged longitudinally or transversely on the vehicle, which can be provided with additional guiding (force transmission) means, because of the longitudinal force to be transmitted. The plate spring body 100 can transmit various forces and moments and has a guide function.
When the plate spring body 100 is a composite plate spring body, because the wear resistance of the plate spring body is poor, in practical application, if the plate spring body 100 and some devices on a vehicle have high friction frequency, the continuity of fibers in the friction area can be damaged, and the mechanical property of the plate spring body 100 and the service life of the plate spring body are further reduced.
In view of this, a wear plate may be provided in a region of the leaf spring body 100 that contacts the vehicle.
For example, the leaf spring body 100 may include a middle portion 110 and two ends (i.e., an end portion 120 and an end portion 130). To facilitate securing the middle portion 110 to the attachment member of the axle and to avoid friction between the middle portion 110 and the attachment member, a top plate 111 may be provided on the upper surface of the middle portion 110 and a bottom plate 112 may be provided on the lower surface of the middle portion 110. Side panels may be provided between the top panel 111 and the bottom panel 112. The thickness of top and bottom plates 111 and 112 may range from 2-20mm or other thickness ranges.
For another example, to protect the end 120 and the end 130, a wear plate 121 may be provided on the upper surface of the end 120 and a wear plate 122 may be provided on the lower surface of the end 120, and a wear plate 131 may be provided on the upper surface of the end 130 and a wear plate 132 may be provided on the lower surface of the end 130. The thickness of wear plates 121, 122, 131, 132 may range from 1-30mm or other thickness range.
For another example, the area of the plate spring body 100 that contacts the guide plate of the vehicle is: in order to avoid the situation that the area of the plate spring body 100, which is in contact with the guide plate of the vehicle, is rubbed by the guide plate to cause fiber breakage, a wear plate 140 may be disposed in the middle area between the middle portion 110 and the end portion 130, and a wear plate 150 may be disposed in the middle area between the middle portion 110 and the end portion 130, so as to ensure mechanical properties of the plate spring body during use and improve service life. The wear plates 140 and 150 may have a thickness in the range of 1-30mm or other thickness range.
The thicknesses of the wear plates 121, 122, 131, 132, 140, and 150 may be the same, may be partially the same, or may be different from each other, which is not particularly limited in the present application.
Typically, the top plate 111 may be fixed to the upper surface of the middle part 110, the bottom plate 112 may be fixed to the lower surface of the middle part 110, and the side plates between the top plate 111 and the bottom plate 112 may be fixed to the side surfaces of the middle part 110 by means of adhesive forms or fastening means such as bolts. However, the fastening is typically done by means of adhesive, since the fastening means would destroy the fibrous structure of the middle part 110.
The molding process of the composite plate spring is generally classified into a continuous Filament Winding (Filament Winding) process and a die pressing (Compressing Molding) process.
The filament winding process may wind the resin-impregnated filament on a mold having a fixed shape and then cure the same to obtain a molded product. However, the strength of the filament winding process is greatly affected by the bonding degree between filaments, and the phenomena of weak interlayer bonding force, easiness in splitting and the like exist, so that the fatigue resistance and strength of the product are lower, and the performance requirement of the plate spring cannot be well met. Therefore, the composite plate spring developed by most manufacturers adopts a die pressing process, the precision is high relative to that of a fiber winding process, the surface of the product is smooth after the product is molded, and secondary processing is not needed. The high pressure resin transfer molding (High Pressure Resin Transfer Molding, HP-RTM) forming process is a typical molding process. Specifically, a preformed fiber reinforced material is put into a mold cavity, the mold is required to be sealed and fastened at the periphery, and the resin can flow smoothly inside; and (3) injecting quantitative resin under a certain pressure after sealing the mould, and demoulding after the resin is solidified to obtain a desired product.
However, for the molding process, since the preformed reinforcing fiber material needs to be impregnated by the injected resin flowing in the sealed mold after the mold is sealed, if the resin does not flow smoothly, the performance of the plate spring body is affected. In general, a structure for facilitating resin flow needs to be specially involved in the mold, but the equipment development cost of the mold is excessively high, which increases the manufacturing cost of the leaf spring body.
In view of the above, the present application provides a method for manufacturing a plate spring body based on winding and HP-RTM, which can improve the mechanical properties of the plate spring body and reduce the manufacturing cost of the plate spring body.
Fig. 3 is a schematic flow chart of a method 300 for manufacturing a winding and HP-RTM based leaf spring body provided by the present application.
As shown in fig. 3, the preparation method 300 may include:
and S310, winding the fiber filaments into fiber loops by using the first positioning assembly and the second positioning assembly.
The first positioning member and the second positioning member may be a columnar member or a plate-like member, for example.
Of course, in other alternative embodiments, the first positioning component and the second positioning component may be used to wind the fiber cloth or the fiber material of other structures into fiber loops, or even, the fiber filaments or the fiber cloth may be wound into fiber loops by using other structures or auxiliary devices, which is not particularly limited in the present application.
Fig. 4 is a schematic side view of a fiber loop carrying a first positioning assembly and a second positioning assembly provided by the present application.
As shown in fig. 4, assuming that the first positioning component 410 and the second positioning component 420 are both cylindrical components, the filament can be wound into a loop 430 using the first positioning component 410 and the second positioning component 420.
S320, paving the fiber ring carrying the first positioning component and the second positioning component in a groove of a die to obtain a preformed structure.
Illustratively, the preformed structure within the recess matches the cavity structure of the recess. For example, the cavity structure of the groove is configured to match the plate spring body, so that the preformed structure in the groove can be ensured to match the structure of the plate spring body.
S330, closing the mold by using a cover plate of the mold.
The mold may be sealed, for example, by a coupling structure between the cover plate and the mold. Of course, the joint portion between the cover plate and the mold may be sealed by a sealing material, which is not particularly limited in the present application.
And S340, vacuumizing the die and injecting resin material into the groove at a preset pressure.
Illustratively, the mold is evacuated until the vacuum level of the mold is greater than or equal to 95% or other value. Wherein the vacuum is the ratio of the volume of air drawn in the mold between the non-vacuums, or the ratio of the volume of air drawn to the volume of the cavity of the mold.
The preset pressure is, for example, 10Mpa or some other value.
For example, after sealing the mold with the cover plate, the mold may be evacuated and then the resin material may be injected into the groove.
And S350, curing the resin material by pressurizing and heating to obtain the structure to be cut.
The structure to be cut may be obtained by applying pressure to the cover plate facing the mould and heating the mould, for example. Of course, the cover plate may be heated, and the present application is not limited thereto.
S360, cutting two ends of the structure to be cut, including the first positioning component and the second positioning component, to obtain the plate spring body.
For example, one end including the first positioning component and the other end including the second positioning component in the structure to be cut may be cut by means of a cutting disc or a water cut, and the remaining part after cutting is taken as a plate spring body.
For example, the cutting position of the structure to be cut may be determined based on the size of the leaf spring body.
In the embodiment, the winding process and the mould pressing process are combined, namely, the fiber loop carrying the first positioning component and the second positioning component is paved in the groove of the mould, so that the fiber filaments can be regularly paved in the groove of the mould, and after the resin material is injected into the groove, the smooth flow of the resin material in the sealed mould is facilitated; on the one hand, the air bag can be prevented from being caused by too complex staggered structure of the fiber yarns, and the mechanical property of the plate spring body is improved; on the other hand, the smooth flow of the resin material in the sealed mold is ensured by regularizing the fiber yarn in the mold, so that the structure for improving the smooth flow degree of the resin material is additionally arranged in the mold, and the preparation cost of the plate spring body is reduced.
In short, compared with the compression molding process, the winding and compression molding process provided by the application can improve the mechanical property of the plate spring body and reduce the preparation cost of the plate spring body.
In some embodiments, the upper surface within the recess includes a first region, a second region, and a third region, the second region and the third region being located on either side of the first region, respectively; the first region is matched with the lower surface of the plate spring body, the second region is used for accommodating the first positioning component, and the third region is used for accommodating the second positioning component; wherein, the S320 may include:
And placing the first positioning component in the second area and the second positioning component in the third area, so that the fiber loops carrying the first positioning component and the second positioning component are laid in the grooves.
Illustratively, the first region is sized to match the cross-sectional area of the first positioning assembly and the third region is sized to match the cross-sectional area of the second positioning assembly to limit the movement space of the first positioning assembly and the second positioning assembly.
In some embodiments, the grooves are symmetrical in structure, and the upper surface within the grooves is higher in the first region than the height of the upper surface within the grooves in the second region.
The first region is illustratively connected to the second region by an arcuate or beveled surface, and the first region is connected to the third region by an arcuate or beveled surface to ensure that the loop of fibers can be smoothly laid in the groove. Of course, in other alternative embodiments, other transition structures may be provided between the first region and the second region and between the first region and the third region, for example, at least one step may be provided or a transition may be directly through a vertical plane perpendicular to the lower surface of the mold, which is not particularly limited in the present application.
Fig. 5 is a schematic side view of a mold provided by the present application.
As shown in fig. 5, the upper surface in the recess of the mold 500 includes a first region 510, a second region 520, and a third region 530, the second region 520 and the third region 530 being located at both sides of the first region 510, respectively; the first region 510 mates with the lower surface of the leaf spring body, the second region 520 is for receiving the first positioning assembly 410 as shown in fig. 4, and the third region 530 is for receiving the second positioning assembly 420 as shown in fig. 4.
Further, when the fiber loop 430 carrying the first positioning component 410 and the second positioning component 420 as shown in fig. 4 is laid in the groove of the mold 500, the first positioning component 410 as shown in fig. 4 may be placed in the second area 520, and the second positioning component 420 as shown in fig. 4 may be placed in the third area 530, so that the fiber loop 430 carrying the first positioning component 410 and the second positioning component 420 may be laid in the groove and attached to the first area 510.
Fig. 6 is a schematic side view of a cover plate provided by the present application.
As shown in fig. 6, the lower surface of the cover plate 600 includes a region 610 corresponding to the first region 510 of the mold 500, a region 620 corresponding to the second region 520 of the mold 500, and a region 630 corresponding to the third region 530 of the mold 500.
Fig. 7 is a schematic side view of the contact location of the cover plate and the mold provided by the present application.
As shown in fig. 7, when the mold 500 is closed by the cover 600, the region 610 in the cover 600 is matched with the first region 510 of the mold 500, the region 620 in the cover 600 is used to form a space for accommodating the first positioning component 410 with the second region 520 of the mold 500, and the region 630 in the cover 600 is used to form a space for accommodating the second positioning component 420 with the third region 530 of the mold 500.
In some embodiments, the method 300 of preparing may further comprise:
determining a first distance;
and in the process that the cover plate approaches the die, adjusting the distance between the first positioning component and the second positioning component in the groove by utilizing a first structure of the lower surface of the cover plate, so that the distance between the first positioning component and the second positioning component is the first distance when the cover plate contacts the die.
For example, the first structure may be used to move the first positioning component and the second positioning component during the process of the cover plate approaching the mold, so as to adjust the distance between the first positioning component and the second positioning component.
For example, when the first positioning component and the second positioning component are not fixed in the groove, the first structure can be utilized to enable the first positioning component and the second positioning component to move back to each other in the process that the cover plate approaches the die, so that the distance between the first positioning component and the second positioning component is increased. Of course, the first positioning component can also be fixed in the groove, so that the second positioning component can be moved by the first structure along the direction away from the first positioning component in the process of approaching the cover plate to the die, so as to increase the distance between the first positioning component and the second positioning component; alternatively, the second positioning component may be fixed in the groove, so that the first positioning component may be moved by the first positioning structure in a direction away from the second positioning component during the process of the cover plate approaching the mold, so as to increase the distance between the first positioning component and the second positioning component. The first structure may be a functional structure capable of enabling the first positioning component and/or the second positioning component to move according to a preset path, and the specific implementation manner of the first structure is not limited.
For example, the first distance may be used to apply a pulling force to the filaments between the first positioning assembly and the second positioning assembly that is greater than a preset threshold. Wherein the preset threshold may be an empirically determined value.
For example, the first distance may be greater than an original distance between the first positioning assembly and the second positioning assembly when laying the fiber loop carrying the first positioning assembly and the second positioning assembly within the groove of the mold.
In some embodiments, the first structure includes a first thrust assembly and a second thrust assembly; when the cover plate approaches the die, the first thrust component is used for providing thrust for a first positioning component to move in a direction away from the second positioning component, and the second thrust component is used for providing thrust for the second positioning component to move in a direction away from the first positioning component; in this case, the first positioning member may be moved away from the second positioning member by the first thrust member, and the second positioning member may be moved away from the first positioning member by the second thrust member until the distance between the first positioning member and the second positioning member is the first distance when the cover plate contacts the mold.
In an exemplary embodiment, when the first positioning component and the second positioning component are not fixed in the groove, in the process that the cover plate approaches the mold, not only the first positioning component can be moved away from the second positioning component by using the first thrust component in the first structure, but also the second positioning component can be moved away from the first positioning component by using the second thrust component in the first structure until the distance between the first positioning component and the second positioning component is the first distance when the cover plate contacts the mold.
Of course, in other alternative embodiments, the first positioning component may be fixed in the groove, so that, during the process of the cover plate approaching the mold, the second positioning component may be moved away from the first positioning component only by the second positioning component until the distance between the first positioning component and the second positioning component is the first distance when the cover plate contacts the mold; or, the second positioning component may be fixed in the groove, so that the first positioning component may be moved away from the second positioning component only by the first positioning component in the process that the cover plate approaches the die, until the distance between the first positioning component and the second positioning component is the first distance when the cover plate contacts the die.
In some embodiments, the first thrust assembly includes at least one first tilting member connected to the lower surface of the cover plate and at least one second tilting member symmetrically disposed with the at least one first tilting member, a distance of the at least one first tilting member and the at least one second tilting member in a direction perpendicular to a movement direction of the cover plate increases as being away from the cover plate, a contact position of the at least one first tilting member with the first positioning assembly is moved upward by a lower end of the at least one first tilting member, and a contact position of the at least one second tilting member with the second positioning assembly is moved upward by a lower end of the at least one second tilting member when the cover plate approaches the mold.
The included angle between the at least one first inclined piece and the moving direction of the cover plate and the included angle between the at least one second inclined piece and the moving direction of the cover plate are larger than or equal to a preset angle, the preset angle is arctan (d 1/d 2), d1 represents the moving distance of the first positioning component or the second positioning component in the process that the cover plate approaches the die, and d2 represents the length of the first inclined piece or the second inclined piece in the moving direction when the lower end of the at least one first inclined piece is in contact with the first positioning component and when the lower end of the at least one second inclined piece is in contact with the second positioning component.
Illustratively, d1 may be a desired value.
In other words, d1 may be the distance the first positioning element or the second positioning element is expected to move during the approach of the cover plate to the mold.
Illustratively, d2 may be any value less than the length of the first diagonal member or less than the length of the second diagonal member.
In this embodiment, the included angle between the moving direction of the at least one first inclined member and the cover plate and the included angle between the moving direction of the at least one second inclined member and the moving direction of the cover plate are greater than or equal to a preset angle, so that the cover plate can be ensured to be in contact with the first positioning component and the second positioning component in the process of approaching the cover plate to the mold, and pressure and external thrust can be applied to the first positioning component and the second positioning component when the at least one first inclined member is ensured to be in contact with the second positioning component, and further, the first positioning component and the second positioning component can be ensured to be moved by using the first structure to apply a tensile force greater than a preset threshold value to the fiber between the first positioning component and the second positioning component in the process of approaching the cover plate to the mold, and the distance between the first positioning component and the second positioning component can be adjusted under the condition of ensuring that the fiber is adhered to the surface of the groove.
In some embodiments, the upper surface within the recess includes a first arcuate surface that mates with the lower surface of the leaf spring body, the first distance being a linear distance between a region of the first locating component closest to the second locating component and a region of the second locating component closest to the first locating component; in this case, a value that is greater than a straight line length of the first arc surface in the laying direction of the fiber loop and less than an arc length of the first arc surface in the laying direction may be determined as the first distance.
In an exemplary embodiment, the first structure may be used to move the first positioning component and the second positioning component during the process of the cover plate approaching the mold, so that the distance between the first positioning component and the second positioning component is adjusted to the first distance by the linear length of the first cambered surface in the laying direction of the fiber loop.
The laying direction of the fiber loop may be perpendicular to the first positioning component and points to the second positioning component, or may be perpendicular to the second positioning component and points to the first positioning component. The application is not limited in this regard.
In this embodiment, the first distance is greater than the straight line length of the first cambered surface in the laying direction of the fiber ring, and is less than the arc length of the first cambered surface in the laying direction, which can be used for ensuring that the fiber filaments between the first positioning component and the second positioning component can be laid on the upper surface in the groove along the uniform direction, or that is, the first distance can ensure that the first positioning component and the second positioning component can apply a certain tensile force to the fiber filaments between the first positioning component and the second positioning component, so that the fiber filaments between the first positioning component and the second positioning component are prevented from being disordered, and further the regular distribution of the fiber filaments in the preformed structure can be ensured, which is beneficial to improving the mechanical property of the plate spring body.
In some embodiments, the S360 may include:
respectively fixing two ends of the structure to be cut by utilizing a structure matched with the first positioning component in the first fixing component and a structure matched with the second positioning component in the second fixing component;
cutting two ends of the structure to be cut, including the first positioning component and the second positioning component, based on the first position and the second position of the structure to be cut; the first position is: the first positioning component is taken as a reference to shift a position at which a preset distance is located to the middle position of the structure to be cut, and the second position is: and shifting the position of the preset distance to the middle position by taking the second positioning component as a reference.
Illustratively, the structure of the first securing assembly that mates with the first positioning assembly is for securing: the structure to be segmented comprises one end of the first positioning component, and the structure matched with the second positioning component in the second fixing component is used for fixing: the structure to be segmented includes one end of the second positioning component.
Illustratively, the first location is: the central axis (or other positions) of the first positioning component is taken as a reference to shift a position at which a preset distance is located to the middle position of the structure to be cut, and the second position is: the center axis (or other positions) of the second positioning assembly is taken as a reference to shift the position of the preset distance to the middle position.
In some embodiments, the side surface within the recess of the first securing component is formed with a first raised structure and the side surface within the recess of the second securing component is formed with a second raised structure; in this case, the two ends of the structure to be cut may be respectively placed into the grooves of the first fixing component and the grooves of the second fixing component; and then adjusting the distance between the first fixing component and the second fixing component, so that the first positioning component abuts against the first protruding structure and the second positioning component abuts against the second protruding structure, and fixing two ends of the structure to be cut.
Illustratively, the first projection arrangement is for securing: the structure to be segmented comprises one end of the first positioning component, and the second protruding structure is used for fixing: the structure to be segmented includes one end of the second positioning component.
The first bump structure and the second bump structure may be step-shaped bump structures, or arc-shaped bump structures, for example.
Of course, in other alternative embodiments, the bottom surface within the recess of the first securing component is formed with a first raised structure and the bottom surface within the recess of the second securing component is formed with a second raised structure; in this case, both ends of the structure to be cut may be respectively placed in the groove of the first fixing member and the groove of the second fixing member; and then adjusting the distance between the first fixing component and the second fixing component, so that the first positioning component is abutted against the first protruding structure and the second positioning component is abutted against the second protruding structure, and fixing the structure to be cut is realized. Even more, the structure of the first fixing element matching the first positioning element and the structure of the second fixing element matching the second positioning element may be other than the protruding structure, for example, the structure of the first fixing element matching the first positioning element may be a groove of the first fixing element for accommodating the first positioning element, and the structure of the second fixing element matching the second positioning element may be a groove for accommodating the second positioning element, which is not limited in particular.
The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the specific details of the embodiments described above, and various simple modifications can be made to the technical solution of the present application within the scope of the technical concept of the present application, and all the simple modifications belong to the protection scope of the present application. For example, the individual features described in the above-mentioned embodiments can be combined in any suitable manner, without contradiction, and the application will not be described in any way in any possible combination in order to avoid unnecessary repetition. As another example, any combination of the various embodiments of the present application may be made without departing from the spirit of the present application, which should also be regarded as the disclosure of the present application.
It should also be understood that, in the various method embodiments of the present application, the sequence numbers of the processes referred to above do not mean the sequence of execution, and the execution sequence of the processes should be determined by the functions and internal logic of the processes, and should not constitute any limitation on the implementation process of the embodiments of the present application.
The application also provides a device for preparing the plate spring body based on winding and HP-RTM.
In some embodiments, the preparation device comprises:
the first positioning assembly and the second positioning assembly are used for winding the fiber layers into fiber loops;
a die, the upper surface of the die being provided with a groove for accommodating the fiber loop carrying the first positioning assembly and the second positioning assembly;
the cover plate is used for sealing the die;
the resin injection device is connected with the groove in a sealing way and is used for vacuumizing the die and injecting resin materials into the groove at a preset pressure;
a pressurizing and heating device in contact connection with the mold for pressurizing and heating the resin material;
and the cutting device is used for cutting the structure to be cut after the curing device cures the resin material so as to obtain the plate spring body.
In some embodiments, the upper surface within the recess includes a first region, a second region, and a third region, the second region and the third region being located on either side of the first region, respectively; the first region is matched with the lower surface of the plate spring body, the second region is used for accommodating the first positioning assembly, and the third region is used for accommodating the second positioning assembly.
In some embodiments, the grooves are symmetrical in structure, and the upper surface within the grooves is higher in the first region than the height of the upper surface within the grooves in the second region.
In some embodiments, the lower surface of the cover plate is provided with a first structure for adjusting the distance between the first positioning component and the second positioning component in the groove when the mold is closed by the cover plate, so that the distance between the first positioning component and the second positioning component is a first distance when the cover plate contacts the mold.
In some embodiments, the first structure includes a first thrust assembly and a second thrust assembly; when the cover plate approaches the die, the first thrust component is used for providing thrust for the first positioning component to move in a direction away from the second positioning component, and the second thrust component is used for providing thrust for the second positioning component to move in a direction away from the first positioning component.
In some embodiments, the first thrust assembly includes at least one first tilting member connected to a lower surface of the cover plate and at least one second tilting member symmetrically disposed with respect to the at least one first tilting member, a distance of the at least one first tilting member and the at least one second tilting member in a direction perpendicular to a movement direction of the cover plate increases as it moves away from the cover plate, a contact position of the at least one first tilting member with the first positioning assembly is moved upward by a lower end of the at least one first tilting member, and a contact position of the at least one second tilting member with the second positioning assembly is moved upward by a lower end of the at least one second tilting member when the cover plate approaches the mold;
The included angle between the at least one first inclined piece and the moving direction of the cover plate and the included angle between the at least one second inclined piece and the moving direction of the cover plate are larger than or equal to a preset angle, the preset angle is arctan (d 1/d 2), d1 represents the moving distance of the first positioning component or the second positioning component in the process that the cover plate approaches the die, and d2 represents the length of the first inclined piece or the second inclined piece in the moving direction when the lower end of the at least one first inclined piece is in contact with the first positioning component and when the lower end of the at least one second inclined piece is in contact with the second positioning component.
In some embodiments, the upper surface within the recess includes a first arcuate surface that mates with the lower surface of the leaf spring body, the first distance being a linear distance between a region of the first locating component closest to the second locating component and a region of the second locating component closest to the first locating component; the first distance is greater than the linear length of the first cambered surface in the laying direction of the fiber ring and less than the arc length of the first cambered surface in the laying direction.
In some embodiments, the cutting device comprises a first securing assembly and a second securing assembly;
the first fixing component is provided with a structure matched with the first positioning component and is used for fixing the end part of the structure to be cut, which comprises the first positioning component; the structure matched with the second positioning component is arranged in the second fixing component and is used for fixing the end part of the structure to be cut, which comprises the second positioning component;
the cutting position of the structure to be cut comprises a first position and a second position, and the first position is: the first positioning component is taken as a reference to shift a position at which a preset distance is located to the middle position of the structure to be cut, and the second position is: and shifting the position of the preset distance to the middle position by taking the second positioning component as a reference.
In some embodiments, the side surface within the recess of the first securing component is formed with a first raised structure and the side surface within the recess of the second securing component is formed with a second raised structure;
the groove of the first fixing component is used for accommodating the end part of the structure to be cut, which comprises the first positioning component, and the groove of the second fixing component is used for accommodating the end part of the structure to be cut, which comprises the second positioning component; when the structure to be cut is fixed, the first positioning component is abutted against the first protruding structure and the second positioning component is abutted against the second protruding structure by adjusting the distance between the first fixing component and the second fixing component, so that two ends of the structure to be cut are fixed.
It should be understood that the embodiment of the method for manufacturing the leaf spring body and the embodiment of the apparatus for manufacturing the leaf spring body may correspond to each other, and similar descriptions may refer to related descriptions of the manufacturing methods, and are not repeated herein.
The application also provides a plate spring body prepared by the preparation method or a plate spring body prepared by the preparation device.
It should be understood that the embodiment of the leaf spring body and the embodiment of the preparation method of the leaf spring body (or the embodiment of the preparation apparatus of the leaf spring body) may correspond to each other, and similar descriptions may refer to related descriptions, which are not repeated herein for brevity.
The application also provides a plate spring assembly, which comprises the plate spring body, wherein two ends of the plate spring body are nested on plate spring seats, the plate spring seats are fixedly connected with a vehicle frame, and the middle part of the plate spring body is fixed on an axle through a U-shaped bolt.
The application also provides a leaf spring assembly which comprises the leaf spring body, wherein metal rolling lugs are fixedly arranged at two ends of the leaf spring body, the metal rolling lugs are fixedly connected with the frame, and the middle part of the composite leaf spring body is fixed on an axle through a U-shaped bolt.
It should be understood that the leaf spring body, the composite leaf spring and the composite leaf spring body described in the specification of the present application may be resin-based fiber composite leaf spring bodies, which may also be simply referred to as leaf springs, and the present application is not limited thereto.
It should be noted that, on the premise of no conflict, the embodiments and/or technical features in the embodiments described in the present application may be combined with each other arbitrarily, and the technical solutions obtained after combination should also fall into the protection scope of the present application.
Those of ordinary skill in the art will appreciate that the various illustrative methods of making described in connection with the embodiments disclosed herein can be implemented as electronic hardware, or as a combination of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application. For example, for the preparation methods of the examples described for the embodiments disclosed herein, which may be performed by robotic or numerically controlled machining means, the apparatus software or process for performing the methods may be implemented by executing computer program code stored in a memory.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (21)
1. A method of manufacturing a leaf spring body based on winding and HP-RTM, comprising:
winding the fiber filaments into fiber loops by using a first positioning assembly and a second positioning assembly;
paving the fiber ring carrying the first positioning component and the second positioning component in a groove of a die to obtain a preformed structure;
closing the mould with a cover plate of the mould;
vacuumizing the die and injecting resin material into the groove at a preset pressure;
curing the resin material by pressurizing and heating to obtain a structure to be cut;
and cutting two ends of the structure to be cut, including the first positioning component and the second positioning component, to obtain the plate spring body.
2. The method of claim 1, wherein the upper surface within the recess comprises a first region, a second region, and a third region, the second region and the third region being located on opposite sides of the first region, respectively; the first region is matched with the lower surface of the plate spring body, the second region is used for accommodating the first positioning component, and the third region is used for accommodating the second positioning component;
Wherein, will carry the first locating component with the fiber loop of second locating component lays in the recess of mould, includes:
and placing the first positioning component in the second area and the second positioning component in the third area, so that the fiber loops carrying the first positioning component and the second positioning component are laid in the grooves.
3. The method of claim 2, wherein the grooves are symmetrical and the upper surface in the grooves is higher in the first region than in the second region.
4. A production method according to any one of claims 1 to 3, characterized in that the production method further comprises:
determining a first distance;
and in the process that the cover plate approaches the die, adjusting the distance between the first positioning component and the second positioning component in the groove by utilizing a first structure of the lower surface of the cover plate, so that the distance between the first positioning component and the second positioning component is the first distance when the cover plate contacts the die.
5. The method of manufacturing of claim 4, wherein the first structure comprises a first thrust assembly and a second thrust assembly; when the cover plate approaches the die, the first thrust component is used for providing thrust for a first positioning component to move in a direction away from the second positioning component, and the second thrust component is used for providing thrust for the second positioning component to move in a direction away from the first positioning component;
Wherein, utilize the first structure of apron lower surface, adjust the recess interior first locating component with distance between the second locating component includes:
and moving the first positioning assembly by using the first thrust assembly in a direction away from the second positioning assembly, and moving the second positioning assembly by using the second thrust assembly in a direction away from the first positioning assembly until the distance between the first positioning assembly and the second positioning assembly is the first distance when the cover plate is in contact with the die.
6. The manufacturing method according to claim 5, wherein the first thrust member includes at least one first inclined member connected to a lower surface of the cover plate and at least one second inclined member disposed symmetrically to the at least one first inclined member, a distance of the at least one first inclined member and the at least one second inclined member in a direction perpendicular to a movement direction of the cover plate increases as being away from the cover plate, a contact position of the at least one first inclined member with the first positioning member is moved upward by a lower end of the at least one first inclined member, and a contact position of the at least one second inclined member with the second positioning member is moved upward by a lower end of the at least one second inclined member when the cover plate approaches the mold;
The included angle between the at least one first inclined piece and the moving direction of the cover plate and the included angle between the at least one second inclined piece and the moving direction of the cover plate are larger than or equal to a preset angle, the preset angle is arctan (d 1/d 2), d1 represents the moving distance of the first positioning component or the second positioning component in the process that the cover plate approaches the die, and d2 represents the length of the first inclined piece or the second inclined piece in the moving direction when the lower end of the at least one first inclined piece is in contact with the first positioning component and when the lower end of the at least one second inclined piece is in contact with the second positioning component.
7. The method of claim 4, wherein the upper surface within the recess includes a first arcuate surface that mates with the lower surface of the leaf spring body, the first distance being a linear distance between a region of the first positioning assembly closest to the second positioning assembly and a region of the second positioning assembly closest to the first positioning assembly;
wherein the determining the first distance comprises:
and determining a numerical value which is larger than the straight line length of the first cambered surface in the laying direction of the fiber ring and smaller than the arc length of the first cambered surface in the laying direction as the first distance.
8. A method of manufacturing as claimed in any one of claims 1 to 3, wherein said cutting both ends of said first positioning assembly and said second positioning assembly included in said structure to be cut comprises:
respectively fixing two ends of the structure to be cut by utilizing a structure matched with the first positioning component in the first fixing component and a structure matched with the second positioning component in the second fixing component;
cutting two ends of the structure to be cut, including the first positioning component and the second positioning component, based on the first position and the second position of the structure to be cut; the first position is: the first positioning component is taken as a reference to shift a position at which a preset distance is located to the middle position of the structure to be cut, and the second position is: and shifting the position of the preset distance to the middle position by taking the second positioning component as a reference.
9. The method of manufacturing according to claim 8, wherein the side surface in the recess of the first fixing member is formed with a first protrusion structure, and the side surface in the recess of the second fixing member is formed with a second protrusion structure;
the structure matched with the first positioning component in the first fixing component and the structure matched with the second positioning component in the second fixing component are utilized to fix two ends of the structure to be cut respectively, and the structure comprises:
Respectively placing two ends of the structure to be cut into a groove of a first fixing component and a groove of a second fixing component;
and adjusting the distance between the first fixing component and the second fixing component, so that the first positioning component is abutted against the first protruding structure and the second positioning component is abutted against the second protruding structure to fix the two ends of the structure to be cut.
10. A device for manufacturing a leaf spring body based on winding and HP-RTM, characterized in that it comprises:
the first positioning assembly and the second positioning assembly are used for winding the fiber layers into fiber loops;
a die, the upper surface of the die being provided with a groove for accommodating the fiber loop carrying the first positioning assembly and the second positioning assembly;
the cover plate is used for sealing the die;
the resin injection device is connected with the groove in a sealing way and is used for vacuumizing the die and injecting resin materials into the groove at a preset pressure;
a pressurizing and heating device in contact connection with the mold for pressurizing and heating the resin material;
And the cutting device is used for cutting the structure to be cut after the curing device cures the resin material so as to obtain the plate spring body.
11. The manufacturing apparatus of claim 10, wherein the upper surface within the recess comprises a first region, a second region, and a third region, the second region and the third region being located on either side of the first region, respectively; the first region is matched with the lower surface of the plate spring body, the second region is used for accommodating the first positioning assembly, and the third region is used for accommodating the second positioning assembly.
12. The apparatus of claim 11, wherein the recess is symmetrical and an upper surface in the recess is higher in the first region than an upper surface in the recess is in the second region.
13. The apparatus according to any one of claims 10 to 12, wherein the cover plate is provided with a first structure on a lower surface thereof for adjusting a distance between the first positioning member and the second positioning member in the recess when the mold is closed with the cover plate such that the distance between the first positioning member and the second positioning member is a first distance when the cover plate is in contact with the mold.
14. The manufacturing apparatus of claim 13 wherein the first structure comprises a first thrust assembly and a second thrust assembly; when the cover plate approaches the die, the first thrust component is used for providing thrust for the first positioning component to move in a direction away from the second positioning component, and the second thrust component is used for providing thrust for the second positioning component to move in a direction away from the first positioning component.
15. The manufacturing apparatus according to claim 14, wherein the first thrust assembly includes at least one first tilting member connected to a lower surface of the cover plate and at least one second tilting member disposed symmetrically to the at least one first tilting member, a distance of the at least one first tilting member and the at least one second tilting member in a direction perpendicular to a movement direction of the cover plate increasing as it moves away from the cover plate, a contact position of the at least one first tilting member with the first positioning assembly being moved upward by a lower end of the at least one first tilting member and a contact position of the at least one second tilting member with the second positioning assembly being moved upward by a lower end of the at least one second tilting member when the cover plate approaches the mold;
The included angle between the at least one first inclined piece and the moving direction of the cover plate and the included angle between the at least one second inclined piece and the moving direction of the cover plate are larger than or equal to a preset angle, the preset angle is arctan (d 1/d 2), d1 represents the moving distance of the first positioning component or the second positioning component in the process that the cover plate approaches the die, and d2 represents the length of the first inclined piece or the second inclined piece in the moving direction when the lower end of the at least one first inclined piece is in contact with the first positioning component and when the lower end of the at least one second inclined piece is in contact with the second positioning component.
16. The manufacturing apparatus of claim 13, wherein the upper surface within the recess includes a first arcuate surface that mates with the lower surface of the leaf spring body, the first distance being a linear distance between a region of the first positioning assembly closest to the second positioning assembly and a region of the second positioning assembly closest to the first positioning assembly; the first distance is greater than the linear length of the first cambered surface in the laying direction of the fiber ring and less than the arc length of the first cambered surface in the laying direction.
17. The preparation device according to any one of claims 10 to 12, wherein the cutting device comprises a first and a second fixing assembly;
the first fixing component is provided with a structure matched with the first positioning component and is used for fixing the end part of the structure to be cut, which comprises the first positioning component; the structure matched with the second positioning component is arranged in the second fixing component and is used for fixing the end part of the structure to be cut, which comprises the second positioning component;
the cutting position of the structure to be cut comprises a first position and a second position, and the first position is: the first positioning component is taken as a reference to shift a position at which a preset distance is located to the middle position of the structure to be cut, and the second position is: and shifting the position of the preset distance to the middle position by taking the second positioning component as a reference.
18. The manufacturing apparatus of claim 17, wherein the side surface in the recess of the first fixing member is formed with a first protrusion structure and the side surface in the recess of the second fixing member is formed with a second protrusion structure;
the groove of the first fixing component is used for accommodating the end part of the structure to be cut, which comprises the first positioning component, and the groove of the second fixing component is used for accommodating the end part of the structure to be cut, which comprises the second positioning component; when the structure to be cut is fixed, the first positioning component is abutted against the first protruding structure and the second positioning component is abutted against the second protruding structure by adjusting the distance between the first fixing component and the second fixing component, so that two ends of the structure to be cut are fixed.
19. The utility model provides a leaf spring body which characterized in that includes:
the plate spring body produced by the production method according to any one of claims 1 to 9; or (b)
Leaf spring body produced with a production apparatus according to any one of claims 10 to 18.
20. A leaf spring assembly, comprising:
the leaf spring body of claim 19, wherein the leaf spring body is nested on spring mounts at both ends, the spring mounts are fixedly connected to the frame, and the middle portion of the leaf spring body is secured to the axle by a U-bolt.
21. A leaf spring assembly, comprising:
the plate spring body prepared by the die of claim 19, wherein metal rolling lugs are fixedly arranged at two ends of the plate spring body and fixedly connected with the vehicle frame, and the middle part of the plate spring body is fixed on the vehicle axle through a U-shaped bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310868109.6A CN116901486A (en) | 2023-07-14 | 2023-07-14 | Preparation method and device of plate spring body based on winding and HP-RTM (high-pressure-real time kinematic) and plate spring body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310868109.6A CN116901486A (en) | 2023-07-14 | 2023-07-14 | Preparation method and device of plate spring body based on winding and HP-RTM (high-pressure-real time kinematic) and plate spring body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116901486A true CN116901486A (en) | 2023-10-20 |
Family
ID=88354394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310868109.6A Pending CN116901486A (en) | 2023-07-14 | 2023-07-14 | Preparation method and device of plate spring body based on winding and HP-RTM (high-pressure-real time kinematic) and plate spring body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116901486A (en) |
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2023
- 2023-07-14 CN CN202310868109.6A patent/CN116901486A/en active Pending
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