CN117484912A - Processing method of carbon fiber composite material with positioning structure - Google Patents
Processing method of carbon fiber composite material with positioning structure Download PDFInfo
- Publication number
- CN117484912A CN117484912A CN202311608189.8A CN202311608189A CN117484912A CN 117484912 A CN117484912 A CN 117484912A CN 202311608189 A CN202311608189 A CN 202311608189A CN 117484912 A CN117484912 A CN 117484912A
- Authority
- CN
- China
- Prior art keywords
- carbon fiber
- positioning
- prepreg
- composite material
- lower die
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 57
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 57
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 239000002131 composite material Substances 0.000 title claims abstract description 16
- 238000003672 processing method Methods 0.000 title claims abstract description 8
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 238000007731 hot pressing Methods 0.000 claims abstract description 3
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 238000012797 qualification Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910021384 soft carbon Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B29C70/541—Positioning reinforcements in a mould, e.g. using clamping means for the reinforcement
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention provides a processing method of a carbon fiber composite material with a positioning structure, which comprises the following steps: a plurality of groups of positioning holes are formed in the upper end face of the lower die; paving at least one layer of reference carbon fiber prepreg on the molding surface of the lower die; penetrating the positioning pin from top to bottom through the reference carbon fiber prepreg and inserting the positioning pin into the positioning hole; sequentially aligning and paving a plurality of remained carbon fiber prepregs on the reference carbon fiber prepreg; and closing the mould, and hot-pressing to obtain the carbon fiber board product with the locating pins. The invention solves the problems that the accuracy of the positioning holes is difficult to ensure and the qualification rate of the products is reduced when the carbon fiber plate products are prepared in the prior art.
Description
Technical Field
The invention relates to the technical field of carbon fiber composite materials, in particular to a processing method of a carbon fiber composite material with a positioning structure.
Background
The carbon fiber composite board product is generally provided with positioning holes for positioning with a tool and the like. The prior art is that a positioning column is arranged on a lower die of a pre-forming die, a corresponding positioning hole is arranged on an upper die of the pre-forming die, then scissors are used for perforating the position of the carbon fiber prepreg corresponding to the positioning column, and then a plurality of layers of perforated carbon fiber prepregs are sleeved on the positioning column in sequence and then subjected to hot press forming, but the sheared positioning holes are not round enough, and the positioning holes are deformed due to pulling when the carbon fiber prepregs are paved, and finally the positioning holes on a solidified and formed carbon fiber composite material plate are uneven and cannot be used as accurate positioning. The other way is that a positioning hole is formed in the carbon fiber composite material product after hot press molding, then Kong Xiyuan is positioned, but the precision of the positioning hole after milling is changed, so that the qualification rate of the product is reduced.
Disclosure of Invention
The invention aims to provide a processing method of a carbon fiber composite material with a positioning structure, which solves the problem that the accuracy of positioning holes is difficult to ensure when a carbon fiber board product is prepared in the prior art, so that the qualification rate of the product is reduced.
The technical scheme adopted for solving the technical problems is as follows:
a processing method of a carbon fiber composite material with a positioning structure comprises the following steps:
a plurality of groups of positioning holes are formed in the upper end face of the lower die;
paving at least one layer of reference carbon fiber prepreg on the molding surface of the lower die;
penetrating the positioning pin from top to bottom through the reference carbon fiber prepreg and inserting the positioning pin into the positioning hole;
sequentially aligning and paving a plurality of remained carbon fiber prepregs on the reference carbon fiber prepreg;
and closing the mould, and hot-pressing to obtain the carbon fiber board product with the locating pins.
Further, two layers of reference carbon fiber prepregs are paved on the lower die in an aligned mode, and then the positioning pins penetrate through the two layers of reference carbon fiber prepregs and are inserted into the positioning holes.
Further, the locating pin is of a T-shaped structure, the upper end of the locating pin is provided with a locating plate, and the lower end of the locating plate is provided with a pin rod.
Further, the lower end of the pin rod is a pointed end.
Further, the thickness of the locating plate is 1.0-1.5 mm.
Further, two groups of positioning holes are arranged and are respectively positioned in the diagonal direction of the lower die.
The invention has the beneficial effects that: according to the invention, the positioning holes are formed in the lower die, and the positioning pins penetrate through the reference carbon fiber prepreg and then cover the carbon fiber prepreg with the required layer number, so that the manufactured carbon fiber composite material product is provided with the positioning pins, the accurate positioning requirement of fixture positioning can be met, and the quality of the product is not influenced.
The invention will be described in more detail below with reference to the drawings and examples.
Drawings
Fig. 1 is a cross-sectional view of the carbon fiber prepreg and the alignment pin according to the present invention disposed on a lower die.
FIG. 2 is a cross-sectional view of a carbon fiber composite product with locating pins according to the present invention.
Detailed Description
A processing method of a carbon fiber composite material with a positioning structure comprises the following steps of;
as shown in fig. 1, a plurality of groups of positioning holes 11 are formed in the upper end surface of a lower die 1, and two groups of positioning holes are formed and are respectively positioned in the diagonal direction of the lower die 1 so as to facilitate two-point positioning;
then, at least one layer of reference carbon fiber prepreg 3 is paved on the molding surface of the lower die, and two groups of the reference carbon fiber prepregs 3 are paved preferably, so that the thickness of the two layers of reference carbon fiber prepregs 3 can meet the later positioning requirement, and the damage can be avoided;
and then the positioning pins penetrate through the two layers of the reference carbon fiber prepregs 3 from top to bottom and are inserted into the positioning holes, so that the accurate positioning of the reference carbon fiber prepregs 3 is completed. The locating pin 2 is of a T-shaped structure, a locating plate with the thickness of 1.0-1.5 mm is arranged at the upper end of the locating pin, a pin rod is arranged at the lower end of the locating plate, and the lower end of the pin rod is a pointed end so as to conveniently penetrate through two layers of reference carbon fiber prepregs 3 and be inserted into the locating holes 11. The thickness of the locating plate is not easy to be too large, and the thickness of the locating plate is set to be 1.0-1.5 mm, so that the surface of a product can be leveled after hot press molding.
Then a third layer of carbon fiber prepreg 4 is paved on a second layer of reference carbon fiber prepreg to cover the positioning plate of the positioning pin 2, and then the rest layers of carbon fiber prepregs are sequentially paved on the reference carbon fiber prepreg 3 in an aligned manner; the carbon fiber prepreg 4 and the reference carbon fiber prepreg 3 are prepregs made of the same soft carbon fiber material, and are provided with a layer of adhesive thin resin, so that the carbon fiber prepregs can be bent and laid on the lower die 1 with different shapes at will.
Finally, the mold is closed and hot-pressed through the working procedure of the prior art to prepare a carbon fiber composite material plate product, and as shown in fig. 2, the product is provided with two groups of positioning pins which are respectively positioned in the diagonal direction of the product; the locating pin of this product from taking can be used to fix a position with the locating hole on the cutting frock, bonding frock. After the cutting and bonding processes are completed, the part of the positioning pin extending out of the lower end of the carbon fiber product is removed, namely, the redundant part of the pin rod is cut off, and the thinner positioning plate is left in the product, so that the quality of the product is not affected.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
While the invention has been described above by way of example, it will be apparent that the invention is not limited to the above embodiments, but is capable of modification in various ways, or in other applications without modification, of the inventive concept and technical solution, all falling within the scope of the invention.
Claims (6)
1. A processing method of a carbon fiber composite material with a positioning structure is characterized by comprising the following steps of;
a plurality of groups of positioning holes are formed in the upper end face of the lower die;
paving at least one layer of reference carbon fiber prepreg on the molding surface of the lower die;
penetrating the positioning pin from top to bottom through the reference carbon fiber prepreg and inserting the positioning pin into the positioning hole;
sequentially aligning and paving a plurality of remained carbon fiber prepregs on the reference carbon fiber prepreg;
and closing the mould, and hot-pressing to obtain the carbon fiber composite material product with the locating pin.
2. The surfacing mat prepreg according to claim 1, wherein two layers of the reference carbon fiber prepreg are laid in alignment in the lower mold and then the alignment pins are inserted through the two layers of the reference carbon fiber prepreg and into the alignment holes.
3. The surfacing mat prepreg of claim 1, wherein the locating pins are of a T-shaped configuration, a locating plate is provided at an upper end thereof, and a pin is provided at a lower end of the locating plate.
4. A surfacing mat prepreg according to claim 3, wherein the lower ends of the pins are pointed.
5. A surfacing mat prepreg according to claim 3, wherein the locating plate has a thickness of 1.0 to 1.5mm.
6. The surfacing mat prepreg of claim 1, wherein the alignment holes are provided in two sets, one set being diagonally opposite the lower die.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311608189.8A CN117484912A (en) | 2023-11-29 | 2023-11-29 | Processing method of carbon fiber composite material with positioning structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311608189.8A CN117484912A (en) | 2023-11-29 | 2023-11-29 | Processing method of carbon fiber composite material with positioning structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117484912A true CN117484912A (en) | 2024-02-02 |
Family
ID=89669006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311608189.8A Pending CN117484912A (en) | 2023-11-29 | 2023-11-29 | Processing method of carbon fiber composite material with positioning structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117484912A (en) |
-
2023
- 2023-11-29 CN CN202311608189.8A patent/CN117484912A/en active Pending
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