CN222119542U - Fabrics that can achieve three-dimensional structures for structural reinforcement of injection molded parts - Google Patents
Fabrics that can achieve three-dimensional structures for structural reinforcement of injection molded parts Download PDFInfo
- Publication number
- CN222119542U CN222119542U CN202420611778.5U CN202420611778U CN222119542U CN 222119542 U CN222119542 U CN 222119542U CN 202420611778 U CN202420611778 U CN 202420611778U CN 222119542 U CN222119542 U CN 222119542U
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- Prior art keywords
- fabric
- injection molded
- warp
- reinforcing
- weft
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- 239000004744 fabric Substances 0.000 title claims abstract description 75
- 238000002347 injection Methods 0.000 title claims abstract description 15
- 239000007924 injection Substances 0.000 title claims abstract description 15
- 230000002787 reinforcement Effects 0.000 title abstract description 3
- 238000001746 injection moulding Methods 0.000 claims abstract description 46
- 239000000835 fiber Substances 0.000 claims abstract description 19
- 239000004033 plastic Substances 0.000 claims abstract description 17
- 229920003023 plastic Polymers 0.000 claims abstract description 17
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 17
- 239000003292 glue Substances 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 9
- 239000012790 adhesive layer Substances 0.000 claims description 8
- 239000010410 layer Substances 0.000 claims description 7
- 238000009941 weaving Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 229920006231 aramid fiber Polymers 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 4
- 239000004760 aramid Substances 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- 230000037303 wrinkles Effects 0.000 description 4
- 239000002270 dispersing agent Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000009954 braiding Methods 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
本实用新型提供的注塑件结构加强用、能够实现三维结构的织物，由纵横交错的经纬线编织而成，织物的幅面上均布有多个网眼，网眼的周长固定，在织物受到压制时，能够通过网眼的形变，使织物形成立体的三维结构，实现与具有复杂三维形状的注塑件的贴合，不会使注塑件上存在不能通过纤维带传递载荷的接缝，也不会导致厚度增加，能够方便地布满注塑件的边缘部位，且注塑后，基体塑料不仅在织物表面与织物进行连接，还穿过织物上的网眼与织物进行连接，总的连接力强，能够承受不同方向上的载荷，对注塑件整体结构的加强效果更好。
The fabric used for reinforcing the structure of injection molded parts and capable of realizing a three-dimensional structure provided by the utility model is woven from criss-crossed warp and weft threads, and a plurality of meshes are evenly distributed on the fabric surface, and the circumference of the meshes is fixed. When the fabric is pressed, the meshes can be deformed to form a three-dimensional structure of the fabric, so as to achieve fitting with the injection molded parts with complex three-dimensional shapes, and no seams that cannot transmit loads through the fiber belts will be left on the injection molded parts, and no increase in thickness will be caused. The edge parts of the injection molded parts can be easily covered, and after injection molding, the matrix plastic is connected to the fabric not only on the fabric surface, but also through the meshes on the fabric to connect to the fabric. The total connection force is strong, and the loads in different directions can be withstood, so as to achieve a better reinforcement effect on the overall structure of the injection molded parts.
Description
Technical Field
The utility model belongs to the technical field of injection molding, and particularly relates to a fabric capable of realizing a three-dimensional structure for reinforcing an injection molding part structure.
Background
The injection molding part is a generic name of various injection molding products produced by an injection molding machine and mainly made of polyethylene, polypropylene or other materials, has the advantages of high production efficiency, convenient mass production, good molding effect, high degree of freedom of shape design and the like, is widely applied to automobile plastic parts such as a fender, a bumper cover, an instrument desk, an air bag cover and the like, but the injection molding part is generally thinner in wall thickness and lower in overall strength, so as to improve structural strength, the prior art is mostly realized in a mode of arranging fabric inserts in the injection molding part, the common inserts are high-strength and high-modulus fiber belts, such as glass fiber belts and the like, but the elasticity of the fiber belts is lower, only the fiber belts can be suitable for simple bending in a single direction, and when the injection molding part with a three-dimensional curved surface and other complex shape is encountered, the bending in the single direction of the fiber belts can not realize good bonding, so that two mutually perpendicular fiber belts are bent in two different directions to realize bonding, as shown in fig. 1, the scheme can lead to joints which can not transmit load through the fiber belts, the fiber belts are overlapped in the injection molding part, the whole structure can be easily increased, and the whole injection molding part is free of the effect is also led to the edge of the injection molding part.
Moreover, such fiber tape is generally of a planar structure, and after the fiber tape is formed into an insert, the connection force between the fiber tape and the matrix plastic of the injection molding is derived from the adhesion force between the surface of the fiber tape and the matrix plastic, and when the injection molding is subjected to a load in a direction other than the adhesion force, the connection force is difficult to play and can only be resisted by the strength of the matrix plastic, so that the phenomena such as dislocation of the fiber tape and tearing of the matrix plastic are extremely easy to cause, and the capability of bearing loads in different directions is weak.
Disclosure of utility model
The utility model aims to overcome the defects of the prior art and provides a fabric which is used for reinforcing an injection molding part structure and can realize a three-dimensional structure and an injection molding method.
In order to achieve the purpose, the technical scheme adopted by the utility model is that the fabric which is used for reinforcing the structure of the injection molding part and can realize the three-dimensional structure is woven by criss-cross warps and wefts, a plurality of meshes are uniformly distributed on the breadth of the fabric, the perimeter of the meshes is fixed, and when the fabric is pressed, the fabric can form a three-dimensional structure through deformation of the meshes, so that the fabric can be attached to the injection molding part.
Preferably, the woven portion of the warp and weft is wrapped with a glue layer for fixing the mesh circumference.
Further preferably, the adhesive layer is formed by drying glue containing polyurethane dispersing agent.
Further preferably, the glue is also absorbed into the warps and wefts before drying.
Further preferably, the weight of the glue layer on the fabric per square meter after drying is 30 g+ -3 g.
Preferably, the materials of the warps and the wefts comprise aramid fibers and polyester fibers.
Preferably, the warp and weft comprises a warp group for forming one side of the mesh and a weft group for forming an adjacent side of the side, the warp group comprises two warp yarns which are mutually independent and mutually twisted, and the weft group comprises one weft yarn in a straightened state.
Further preferably, two of said warp threads of said warp thread set are twisted at intervals, each staggering sandwiching one of said weft threads.
Further preferably, the warp yarn set has a density of 40/10cm and the weft yarn set has a density of 35/10cm.
Further preferably, the fabric is used for making plastic parts for vehicles.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
The fabric for reinforcing the structure of the injection molding piece, which is provided by the utility model, is formed by weaving crisscross warps and wefts, a plurality of meshes are uniformly distributed on the breadth of the fabric, the perimeter of the meshes is fixed, when the fabric is pressed, the fabric can form a three-dimensional structure through deformation of the meshes, the joint with the injection molding piece with a complex three-dimensional shape is realized, no seam which cannot transmit load through a fiber belt exists on the injection molding piece, the thickness is not increased, the edge part of the injection molding piece can be conveniently distributed, after injection molding, the matrix plastic is connected with the fabric on the surface of the fabric, and is connected with the fabric through the meshes on the fabric, the total connecting force is strong, the load in different directions can be born, and the reinforcing effect on the integral structure of the injection molding piece is better.
Drawings
FIG. 1 is a schematic illustration of a prior art insert molded part using fiberglass tape.
Fig. 2 is a schematic structural view of a preferred embodiment of the fabric of the present utility model.
FIG. 3 is an enlarged schematic cross-sectional view taken in the direction A-A of FIG. 1 showing only a single weft yarn set and a single warp yarn set.
Fig. 4 is a schematic view of the fabric of fig. 1 forming a three-dimensional structure.
Fig. 5 is a schematic view of the fabric of fig. 1 inserted into an injection molded part.
Wherein, 10 parts of fabric, 11 parts of mesh, 21 parts of braiding, 22 parts of warp, 23 parts of weft and 30 parts of adhesive layer.
Detailed Description
Preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings so that the advantages and features of the present utility model will be more readily understood by those skilled in the art.
As shown in fig. 2 to 5, the fabric 10 for reinforcing an injection molding structure and capable of realizing a three-dimensional structure is formed by weaving crisscross warps and wefts, a plurality of meshes 11 are uniformly distributed on the breadth of the fabric 10, the perimeter of the meshes 11 is fixed, specifically, the weaving parts 21 of the warps and the wefts and the warps and wefts are wrapped with glue layers 30 for fixing the perimeter of the meshes 11, the glue layers 30 are formed by drying glue containing polyurethane dispersing agents, the glue is absorbed into the warps and wefts before drying, and when the fabric 10 is pressed, the fabric 10 can form a three-dimensional structure through deformation of the perimeter of the meshes 11, so that the fabric is bonded with the injection molding structure.
The advantage that sets up like this lies in, can not make to have the seam that can not pass through the fibrous area transmission load on the injection molding, also can not lead to thickness increase, can conveniently cover the edge position of injection molding, and after moulding plastics, base member plastics not only is connected with the fabric on the fabric surface, still passes mesh on the fabric and is connected with the fabric, and total connecting force is strong, can bear the ascending load of different directions, and is better to the reinforcement effect of injection molding overall structure.
In this embodiment, the warp and weft include a warp group for forming one side of the mesh 11 and a weft group for forming an adjacent side of the side, and further, in order to ensure stability of the mesh 11 on the inlay 10, the warp group includes two mutually independent and mutually twisted warp yarns 22, the weft group includes one weft yarn 23 in a straightened state, the two warp yarns 22 of the warp group are twisted with each other at intervals, each time the warp yarn 23 is sandwiched between them (when the warp group is staggered, fine pores between the two warp yarns 22 and the weft yarn 23 are also filled with the adhesive layer 30), so that at the weaving portion of the warp and weft yarns, the two warp yarns 22 of the warp group are respectively located above and below the weft yarn 23, preferably an aramid fiber or a high-strength polyester fiber or a carbon fiber, other types of high-strength fiber may be used, and for the weaving of the fabric 10, different manners such as to be able to form the same, deformable mesh is not limited herein.
The fabric 10 in this embodiment is used for manufacturing plastic parts for vehicles, so that the deformation of the mesh 11 needs to have a certain flexibility, so that the thickness of the adhesive layer 30 cannot be too thick, and of course, in order to achieve the stability of fixing the circumference of the mesh 11, the thickness of the adhesive layer 30 cannot be too thin, preferably, after drying, the weight of the adhesive layer 30 on each square meter of the fabric 10 is 30g±3g, and at the same time, the density of the warp yarn groups and the weft yarn groups on the fabric 10 also affects the deformation of the mesh 11, preferably, the density of the warp yarn groups is 40/10cm, and the density of the weft yarn groups is 35/10cm.
In the present utility model, due to the existence of the glue layer 30, the perimeter of each mesh 11 on the fabric 10 is kept fixed, as shown in fig. 2, the mesh 11 can be regarded as a rectangle with fixed side length, and can be sheared to become a parallelogram under the action of external force, at this time, the interval between the warp yarn group and the weft yarn group can be changed, and the warp yarn and the weft yarn can be made to present a curve state through the deformation of a plurality of meshes with different degrees, so that the whole fabric 10 can present a three-dimensional structure on the premise of not generating wrinkles or less wrinkles, and the fitting with the shape of an injection molding piece can be realized.
The utility model also provides an injection molding method for manufacturing the plastic part for the vehicle, which comprises the following steps of:
A. Weaving a fabric body with a plurality of meshes uniformly distributed on the breadth by using crisscrossed warps and wefts;
B. Immersing the fabric body in glue;
C. After the glue is completely absorbed into the warps and wefts, taking out and drying the fabric body, and solidifying the glue wrapped at the warps and wefts and the warps and wefts braiding parts to form a glue layer to obtain the fabric;
D. pressing the fabric through a die to ensure that meshes of the fabric are deformed with unchanged circumferences to form a three-dimensional structure;
E. And (3) placing the fabric with the three-dimensional structure into an injection mold for injection molding, so that the matrix plastic wraps the fabric and passes through the meshes to obtain an injection molding piece.
The advantage of setting like this lies in, can make the method step of moulding plastics simple, convenient operation can make the injection molding that structural strength is better and have complicated three-dimensional shape to enlarge the application scope of injection molding.
And D, when the mesh is pressed, shearing movement is carried out to form a parallelogram (deformation), at the moment, the intervals between the warp and the weft in the warps and the wefts can be changed, and the warps and the wefts can be enabled to be in a curve state through the deformation of different degrees of the meshes, so that the whole fabric can be in a three-dimensional structure on the premise of not generating wrinkles or less wrinkles, and the fitting with the shape of an injection molding piece can be realized.
Preferably, the materials of the warps and the wefts in the step A comprise aramid fibers, polyester fibers and carbon fibers, and the densities of the warps and the wefts in the step A are 40/10cm and 35/10cm.
Preferably, the glue in step B contains a polyurethane dispersant.
Preferably, before the step C is dried, the step C further comprises the step of blowing off glue adhered to the meshes by a blower to dredge the meshes.
Preferably, after the drying in the step C, the weight of the upper adhesive layer of each square meter fabric is 30 g+/-3 g.
The fabric and the injection molding method provided by the utility model can be completely attached to the shape of the injection molding part to be reinforced, so that the surface of the whole injection molding part is easier to cover, each corner of the whole injection molding part can be reinforced, the reinforcing effect is better because the fabric has no seam when the whole injection molding part is covered, and the mesh structure in the fabric enables the matrix plastic to penetrate during injection molding, so that the matrix plastic after injection molding can be fully combined with the fabric into a whole, and the reliability during use is improved.
The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.
Claims (8)
1. A fabric capable of realizing a three-dimensional structure for reinforcing an injection molding part structure is formed by weaving warps and wefts in a crisscross mode, and is characterized in that a plurality of meshes are uniformly distributed on the fabric, the circumferences of the meshes are fixed, and when the fabric is pressed, the fabric can form a three-dimensional structure through deformation of the meshes, so that the fabric can be attached to the injection molding part.
2. The fabric for reinforcing a structure of an injection molded article according to claim 1, wherein the woven portion of the warp and weft is wrapped with a glue layer for fixing the perimeter of the mesh.
3. The fabric for reinforcing a structure of an injection molded article according to claim 2, wherein the weight of the adhesive layer on the fabric after drying is 30 g.+ -.3 g per square meter.
4. The fabric for reinforcing a structure of an injection molded article according to claim 1, wherein the warp and weft materials include aramid fibers and polyester fibers.
5. The fabric for reinforcing a structure of an injection molded article capable of realizing a three-dimensional structure according to claim 1, wherein said warp and weft comprise a warp group for forming one side of said mesh and a weft group for forming an adjacent side of said side, said warp group comprising two warp yarns which are mutually independent and mutually twisted, said weft group comprising one weft yarn in a straightened state.
6. The fabric for reinforcing a structure of an injection molded article according to claim 5, wherein two of said warp yarns of said warp yarn set are twisted with each other at an interval, and each of said warp yarns is sandwiched between said weft yarns.
7. The fabric for reinforcing a structure of an injection molded article according to claim 6, wherein the warp yarn set has a density of 40/10cm and the weft yarn set has a density of 35/10cm.
8. The fabric for reinforcing a structure of an injection molded article according to any one of claims 1 to 7, which is capable of realizing a three-dimensional structure, wherein the fabric is used for manufacturing a plastic article for a vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420611778.5U CN222119542U (en) | 2024-03-28 | 2024-03-28 | Fabrics that can achieve three-dimensional structures for structural reinforcement of injection molded parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420611778.5U CN222119542U (en) | 2024-03-28 | 2024-03-28 | Fabrics that can achieve three-dimensional structures for structural reinforcement of injection molded parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222119542U true CN222119542U (en) | 2024-12-06 |
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ID=93683168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420611778.5U Active CN222119542U (en) | 2024-03-28 | 2024-03-28 | Fabrics that can achieve three-dimensional structures for structural reinforcement of injection molded parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222119542U (en) |
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2024
- 2024-03-28 CN CN202420611778.5U patent/CN222119542U/en active Active
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