CN102398370A - Method for prepared polygonal continuous side frame from prepreg - Google Patents
Method for prepared polygonal continuous side frame from prepreg Download PDFInfo
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- CN102398370A CN102398370A CN2010102826022A CN201010282602A CN102398370A CN 102398370 A CN102398370 A CN 102398370A CN 2010102826022 A CN2010102826022 A CN 2010102826022A CN 201010282602 A CN201010282602 A CN 201010282602A CN 102398370 A CN102398370 A CN 102398370A
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Abstract
The invention discloses a method for prepared a polygonal continuous side frame from a prepreg. The method comprises the following steps of preparing a rigid winding mold having a winding surface corresponding to a shape of a polygonal continuous side frame needing to be prepared, smoothly winding the winding surface of the rigid winding mold with a continuous prepreg strip by a preset tensile force until a semi-finished product having preset thickness is obtained, sleeving an elastic rim having a shape corresponding to the polygonal continuous side frame needing to be prepared on the semi-finished product, putting the semi-finished product with the elastic rim into a rigid mold with hot-pressing equipment, and carrying out heating and pressurization for hardening and molding of the semi-finished product so that the polygonal continuous side frame is obtained. Through the method provided by the invention, the polygonal continuous side frame is directly prepared form the semi-finished product having a shape corresponding to the polygonal continuous side frame. Therefore, the method is simple, and can reduce remolded product deformation risks and cutting molding costs.
Description
Technical field
The present invention relates to a kind of method, particularly relate to a kind of method of making polygon continuous side frame with preimpregnation material with the preimpregnation material shaping workpiece.
Background technology
Utilize the made composite material work piece of preimpregnation material because have light weight, characteristic that intensity is high; And special vision and touch feeling can be provided; So be widely used in mobile phone, thin display, e-book, the satellite navigation system of higher-order, or in the consumption electronic products such as pocket music player.
Consult Fig. 1 and Fig. 2; To mold side frame as shown in Figure 13 is example; Utilize the main manufacturing process of the composite material work piece of preimpregnation material making roughly to comprise the superimposed step 11 of a lamination, a concora crush step 12, a sanction shape step 13, a hot-forming step 14 at present, and a demoulding pre-shaping step 15.
In the superimposed step 11 of lamination, be that lamination is stacked one by one with resiniferous preimpregnation composite in the majority, and obtain a laminated substrate.
Then carry out this concora crush step 12, this laminated substrate is pressed and remove substrate inner air and interlayer bubble with pressing mode.
Carry out this sanction shape step 13 then, this laminated substrate behind the concora crush tailored this laminated substrate according to the frame aspect correspondence desiring to produce, and obtain one treat hot pressing semi-finished product.
Then carry out this hot-forming step 14 again, this is treated that the hot pressing semi-finished product put into mould, hot repressing is should treat that the hot pressing semi-finished product are to mold the first base of this side frame.
Carry out demoulding pre-shaping step 15 at last, after the first base of this side frame is taken out, carry out the first base periphery finishing of this side frame in this mould, for example remove fifth wheels such as cull, can produce side frame as shown in Figure 13.
Above-mentioned composite material work piece by the preimpregnation material moulding can be produced efficiently really and comprise the composite material work piece of this side frame in interior various aspect; But the major defect of this processing procedure is to be subject to the composite material work piece kenel that the institute desire produces and waste that higher preimpregnation composite is arranged.To mold side frame as shown in Figure 13 is example; Because this side frame 3 is to be the hollow square frame shape with certain altitude h, therefore when the superimposed step 11 of lamination, highly h are corresponding for this side frame 3 that height h that must repeatedly stacking preimpregnation composite to the laminated substrate that is constituted can make with desire; But when cutting out shape step 13; Need again the very big zone of these laminated substrate central authorities cut out and remove and process framework aspect, cut the part of getting off and be subject to height h and area size and be difficult to just be applicable to and make another composite material work piece, consequently can't reclaim and re-use with predetermined thickness t; Cause the wide variety of materials waste, manufacturing cost thereby raising.
Therefore; As shown in Figure 3; Develop earlier that preimpregnation material is cut into most the strip preimpregnation materials corresponding to this side frame length, width and thickness, in regular turn those strip preimpregnation material laminations are piled up the laminated substrate that obtains the shaped as frame aspect again, carry out the hot pressing moulding with mould similarly afterwards; And the process of repairing after the demoulding, just can under the prerequisite that reduces waste of material, produce same side frame 3 '.
When yet though the method can be avoided cutting out except that laminated substrate the problem of the material resources that causes waste; But but the side frame 3 ' that this mode is produced demonstrates the in disorder discontinuous outward appearance of fiber decorative pattern of finished product because of the mode of the superimposed strip preimpregnation of lamination composite, and can't meet the product examine shipment standard of consumption electronic products.
Hence one can see that; The composite material work piece that utilizes the preimpregnation composite to be molded at present; Particularly make side frame for example 3,3 ' manufacturing process need be improved; How can when reducing material cost, can also keep attractive in appearance and the lifting market competitiveness, become the industry problem demanding prompt solution.
Summary of the invention
The object of the present invention is to provide a kind of simple for production and method of making polygon continuous side frame with preimpregnation material of waste material resource not.
The method that the present invention makes polygon continuous side frame with preimpregnation material, it is characterized in that: this method comprises:
(a) prepare a rigidity and twine mould, this rigidity is twined mould and is had a winding face corresponding to the polygon continuous side frame aspect of this desire making;
(b) make the preimpregnation material of a continuous long ribbon shape be stacked on this winding face, and mold the continuous frame shape of polygon semi-finished product with thickness t of the polygon continuous side frame of making corresponding to desire with the predetermined tension winding;
Volume can expand and the resilient bezel snare of the polygon continuous side frame aspect that shape is made corresponding to this desire is located on these continuous frame shape semi-finished product when (c) one being heated, and treats the hot pressing workpiece and constitute one;
(d) touch a inner surface with these resilient bezel circle subsides and carry out hot pressing, and make the continuous frame shape of this polygon semi-finished product become this polygon continuous side frame with rigid die of a hot-press equipment; And
(e) take out after the hot pressing this certainly in this rigid die and treat the hot pressing workpiece, remove this resilient bezel circle and this rigidity winding mould, make this polygon continuous side frame.
The object of the invention and solve its technical problem and also can adopt following technical measures further to realize.
Preferably, described method of making polygon continuous side frame with preimpregnation material, wherein in this step (a), said rigidity is twined mould and is comprised a body that is thick plate-like, and one is formed at this base side side face and has the spacing winding groove of this winding face.
Preferably; Described method of making polygon continuous side frame with preimpregnation material; Wherein in this step (b); When twining this preimpregnation material, be to borrow a push piece to be resisted against with predetermined pressure on this preimpregnation material that is wound on this winding face, entirely be wound in the continuous frame shape of this polygon semi-finished product to oppress this preimpregnation material.
Preferably, described method of making polygon continuous side frame with preimpregnation material, wherein this resilient bezel circle is that main material is made with silica gel.
Beneficial effect of the present invention is: the rigidity through this preimpregnation material being wound in corresponding aspect is twined mould; Cooperate this rigid die to bestow the half-finished outer peripheral face pressure of the continuous frame shape of this polygon again via hot pressing, and by means of this resilient bezel circle, and this rigidity winding mould give inner peripheral surface pressure; Just can make the continuous frame shape of this polygon semi-finished product hardened forming; The demoulding need not pass through to cut to make finished product after taking out, and not only can not cause the waste of material resources; And finished product outward appearance decorative pattern is complete is not damaged, and overall process is simple and easy.
Description of drawings
Fig. 1 is the sketch map of a composite material forming side frame;
Fig. 2 is a flow chart, and the manufacturing approach of existing preimpregnation composite articles is described;
Fig. 3 is a sketch map, explain existing preimpregnation material after cutting again lamination be superimposed as a frame base;
Fig. 4 is a flow chart, explains that the present invention makes the preparation method of polygon continuous side frame with preimpregnation material;
Fig. 5 is the sketch map that a rigidity is twined mould;
Fig. 6 is a sketch map, explains that one push piece twined mould and this preimpregnation material with predetermined pressure against this rigidity when this preimpregnation material was wound in this rigidity winding mould;
Fig. 7 is the half-finished part sectioned view of the continuous frame shape of a polygon;
Fig. 8 is a part sectioned view of treating the hot pressing workpiece;
Fig. 9 is a part sectioned view, and explanation treats that with this hot pressing workpiece places this rigid die;
Figure 10 is a sketch map, explains that one has the thing to be cut of the polygon continuous side frame of estimating quantity after cutting.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
Consult Fig. 4; The present invention makes a preferred embodiment of the method for polygon continuous side frame with preimpregnation material; In order to produce the polygon continuous side frame 3 of aspect as shown in Figure 1; And made polygon continuous side frame 3 has continuous, smooth fiber decorative pattern outward appearance, and can meet the product examine shipment standard of consumption electronic products.
Cooperate and consult Fig. 5; At first carry out step 21; Prepare one group of stressed indeformable rigidity and twine mould 4, this rigidity is twined mould 4 and is comprised that one presents the body 42 of rectangular thick plate shape, and one be formed at these body 42 lateral circle surfaces spacing winding groove 411; This spacing winding groove 411 has a winding face 41, the horizontal profile shape of this winding face 41 with the polygon continuous side frame of making 3 is shaped as similar figures and corresponding each other.
Consult Fig. 4, Fig. 6 and Fig. 7; Then carry out step 22; Make the preimpregnation material 5 of a continuous long ribbon shape twine on the winding face 41 that is stacked in this rigidity winding mould 4 with predetermined tension; And constituting the continuous frame shape of polygon semi-finished product 8, the thickness t of the continuous frame shape of this polygon semi-finished product 8 is corresponding with the thickness t of the polygon continuous side frame 3 that desire is made.In more detail; This step 22 is to utilize stepping motors (scheming not shown) to drive this rigidity to twine mould 4 to wait angular speed rotation; When this rigidity is twined mould 4 rotations; Drive a rolling simultaneously and coil the preimpregnation material 5 of coiling the continuous long ribbon shape on the frame (scheming not shown) in one, twine with predetermined tension along the winding face of this spacing winding groove 411 41 smooth-goingly, and obtain the continuous frame shape of this polygon semi-finished product 8.Preferably; In this process; Can also make a push piece 6 abut against the preimpregnation material 5 that is wrapped on this spacing winding groove 411 with keeping a predetermined pressure; Via the predetermined pressure that predetermined tension and this push piece 6 of this preimpregnation material 5 itself gives this preimpregnation material 5 and this spacing winding groove 411, the bubble that can will be present in 5 of this preimpregnation materials is pushed out by this push piece 6 in the process of twining simultaneously, thus the whole flatness of the continuous frame shape of this polygon semi-finished product that keep twining out 8; Can or not gauffer not take place because of this preimpregnation material 5 twines irregularity because of bubble produces protruding phenomenon yet.
Consult Fig. 4, Fig. 7 and Fig. 8; Then carry out step 23; The aspect of preparing the polygon continuous side frame 3 that shape and this desire of a horizontal profile make is the dilatable resilient bezel circle 7 of volume for similar figures and when being heated generally; This resilient bezel circle 7 is sheathed on the outer peripheral face of the continuous frame shape of this polygon semi-finished product 8, and the continuous frame shape of this polygon this moment semi-finished product 8 and this resilient bezel circle 7 and this rigidity twine that mould 4 is common to be formed one and treats hot pressing workpiece 9.In the present embodiment, this resilient bezel circle 7 is to be that main material is made with silica gel, but the present invention should not be subject to the main material of silica gel for this resilient bezel circle 7.
Consult Fig. 4, Fig. 8 and Fig. 9, then carry out step 24, prepare a rigid die 10, this rigid die 10 not deformation and have and can supply this to treat the room 103 that hot pressing workpiece 9 is ccontaining.Make this treat that hot pressing workpiece 9 places in the room 103 of this rigid die 10.This resilient bezel circle 7 is close to the inner surface 101 that touches in this rigid die 10; Make this treat that hot pressing workpiece 9 and this rigid die 10 closely cooperate; Borrow a hot-press equipment to provide this to treat hot pressing workpiece 9 one predetermined temperatures; This treats that hot pressing workpiece 9 outer peripheral faces bestow a predetermined pressure to cooperate 10 pairs of this resilient bezel circle 7 and this rigid die simultaneously; The resilient bezel circle 7 that expands when being heated can make this predetermined pressure can be evenly distributed in the outer peripheral face of the continuous frame shape of this polygon semi-finished product 8, and this rigidity is twined inner peripheral surface one pressure that mould 4 also gives the continuous frame shape of this polygon semi-finished product 8, the pressure that the continuous frame shape of this polygon semi-finished product 8 bear from outer peripheral face and inner peripheral surface simultaneously; And the heat energy of this hot-press equipment generation, make 8 thermosettings of the continuous frame shape of this polygon semi-finished product become the first base of polygon continuous side frame 3 as shown in Figure 1.
Consult Fig. 4, Fig. 8 and Fig. 9; What carry out at last is step 25; Earlier this is treated that hot pressing workpiece 9 takes out in this rigid die 10, remove this resilient bezel circle 7, and will be positioned at rigidity winding mould 4 taking-ups of the first base of this polygon continuous side frame 3; Remove the outside residue of the first base of this polygon continuous side frame 3 again, make these polygon continuous side frame 3 finished products as shown in Figure 1.
Consult Fig. 4, Fig. 5 and Figure 10; What specify is; The height H that this rigidity is twined the spacing winding groove 411 of mould 4 also can increase to can the corresponding height h summation of estimating the polygon continuous side frame of quantity; Carry out above-mentioned steps 22 again to step 25, form one have most polygon continuous side frames thing to be cut 102, last again will this thing 102 to be cut cutting processed most individual polygon continuous side frames 3 as shown in Figure 1.So, can produce the polygon continuous side frame 3 of more amount simultaneously, and the effect of the cost of saving time can be provided in same making flow process.
In sum; The preparation method that the present invention makes polygon continuous side frame with preimpregnation material 5; The rigidity that the shape that is wound in the polygon continuous side frame 3 that aspect and this desire of this winding face 41 make through this preimpregnation material 5 corresponds to similar figures with having a predetermined tension is twined mould 4; And the predetermined pressure when giving these preimpregnation material 5 windings through this push piece 6 simultaneously; Smooth and easy and do not have bubble and be stored in 5 of this preimpregnation materials when this preimpregnation material 5 is twined, and become the continuous frame shape of polygon semi-finished product 8, also this treats hot pressing workpiece 9 to a sheathed accordingly again aspect with 7 one-tenth on the resilient bezel circle that is shaped as similar figures of this polygon continuous side frame 3; And this is treated that hot pressing workpiece 9 inserts in this rigid die 10; When this resilient bezel circle 7 utilizes this hot-press equipment that this hot pressing workpiece 9 is heated and pressurizeed, make pressure on average intersperse among the outer peripheral face and the inner peripheral surface of the continuous frame shape of this polygon semi-finished product 8, make that polygon continuous side frame after the sclerosis can be more smooth and can bear more powerful external force; The finally demould integer, the continuous frame shape of this polygon semi-finished product 8 just become polygon continuous side frame 3.
The present invention does not need the extra step of removing bubble when twining that is increased in again; Just can make it when semi-finished product, just have smooth-going surface; Also saving traditional method needs to make these semi-finished product become the step of predetermined aspect through cutting earlier; Therefore can be because of not cutting waste material resource, required time of salvage material, and salvage material made the cost that becomes preimpregnation material 5 again, flow process is more easy.
Moreover, because this preimpregnation material 5 is to be continuous band-shaped, and do not have and block or be wound in with rejoining this rigidity and twine mould 4, so can make the fiber decorative pattern on surface of this polygon continuous side frame 3 continuous and smooth.So, when this side frame 3 is applied to consumption electronic products, can make the side framework of commodity have the striped of natural formation and the outward appearance lines of smoothness, promote the desire that the consumer buys.
Claims (4)
1. method of making polygon continuous side frame with preimpregnation material, it is characterized in that: this method comprises:
(a) prepare a rigidity and twine mould, this rigidity is twined mould and is had a winding face corresponding to the polygon continuous side frame aspect of this desire making;
(b) make the preimpregnation material of a continuous long ribbon shape be stacked on this winding face, and mold the continuous frame shape of polygon semi-finished product with thickness of the polygon continuous side frame of making corresponding to desire with the predetermined tension winding;
Volume can expand and the resilient bezel snare of the polygon continuous side frame aspect that shape is made corresponding to this desire is located on these continuous frame shape semi-finished product when (c) one being heated, and treats the hot pressing workpiece and constitute one;
(d) touch a inner surface with these resilient bezel circle subsides and carry out hot pressing, and make the continuous frame shape of this polygon semi-finished product become this polygon continuous side frame with rigid die of a hot-press equipment;
(e) take out after the hot pressing this certainly in this rigid die and treat the hot pressing workpiece, remove this resilient bezel circle and this rigidity winding mould, make this polygon continuous side frame.
2. method of making polygon continuous side frame with preimpregnation material according to claim 1; It is characterized in that: in this step (a); Said rigidity is twined mould and is comprised a body that is thick plate-like, and one is formed at this base side side face and has the spacing winding groove of this winding face.
3. method of making polygon continuous side frame with preimpregnation material according to claim 2; It is characterized in that: in this step (b); When twining this preimpregnation material; Be to borrow a push piece to be resisted against with predetermined pressure on this preimpregnation material that is wound on this winding face, entirely be wound in the continuous frame shape of this polygon semi-finished product to oppress this preimpregnation material.
4. method of making polygon continuous side frame with preimpregnation material according to claim 3, it is characterized in that: this resilient bezel circle is that main material is made with silica gel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102826022A CN102398370A (en) | 2010-09-16 | 2010-09-16 | Method for prepared polygonal continuous side frame from prepreg |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102826022A CN102398370A (en) | 2010-09-16 | 2010-09-16 | Method for prepared polygonal continuous side frame from prepreg |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1427589A (en) * | 1972-05-15 | 1976-03-10 | Weaver A S | Door and window frames |
| CN101450533A (en) * | 2007-11-30 | 2009-06-10 | 航天材料及工艺研究所 | Carbon fiber reinforcement resin base composite material lattice structural-component conforming die and method |
| CN101579955A (en) * | 2008-05-16 | 2009-11-18 | 比亚迪股份有限公司 | Carbon fiber product and manufacturing method thereof |
-
2010
- 2010-09-16 CN CN2010102826022A patent/CN102398370A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1427589A (en) * | 1972-05-15 | 1976-03-10 | Weaver A S | Door and window frames |
| CN101450533A (en) * | 2007-11-30 | 2009-06-10 | 航天材料及工艺研究所 | Carbon fiber reinforcement resin base composite material lattice structural-component conforming die and method |
| CN101579955A (en) * | 2008-05-16 | 2009-11-18 | 比亚迪股份有限公司 | Carbon fiber product and manufacturing method thereof |
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Application publication date: 20120404 |