CN110900903B - Forming die capable of reducing burrs at opening during carbon fiber box forming - Google Patents
Forming die capable of reducing burrs at opening during carbon fiber box formingInfo
- Publication number
- CN110900903B CN110900903B CN201911135966.5A CN201911135966A CN110900903B CN 110900903 B CN110900903 B CN 110900903B CN 201911135966 A CN201911135966 A CN 201911135966A CN 110900903 B CN110900903 B CN 110900903B
- Authority
- CN
- China
- Prior art keywords
- die
- carbon fiber
- pressing block
- main
- main 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.)
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Links
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 60
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 60
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 239000004744 fabric Substances 0.000 claims abstract description 34
- 238000003825 pressing Methods 0.000 claims abstract description 33
- 238000000465 moulding Methods 0.000 claims description 10
- 238000009423 ventilation Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000009966 trimming Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000004484 Briquette Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Abstract
The invention discloses a forming die capable of reducing burrs at an opening of a carbon fiber box body during forming, which comprises a main die, an inflatable elastic inner die and a cover plate, wherein an inner cavity which is used for laying carbon fiber cloth and is provided with an opening at the upper end is arranged in the middle of the main die; the forming die also comprises a pressing block; a step surrounding the inner cavity of the main die is arranged on the inner wall of the upper end of the main die; the pressing block is detachably arranged on the step, and the inner side of the pressing block inwards extends out of the inner wall of the main die to be attached to the top surface of the carbon fiber cloth; the cover plate is fixed above the main die. The invention can prevent the vertical burrs from being generated at the opening position of the carbon fiber box body in the forming process, thereby facilitating the production and the manufacture of the box body by workers, saving the time for trimming, improving the production efficiency and enabling the wall surface of the carbon fiber box body produced by the invention to be smoother.
Description
Technical Field
The invention relates to the technical field of carbon fiber product manufacturing, in particular to a forming die capable of reducing burrs at an opening during forming of a carbon fiber box body.
Background
The draw-bar box has become necessary luggage articles for people when going out or traveling for a short time, and the number or the size of the articles which can be accommodated by the draw-bar box are different due to the different sizes and capacities. The conventional draw-bar box generally comprises an upper box body and a lower box body, wherein a draw bar is arranged on one box body, one sides of the two box bodies are hinged, and the two box bodies can be closed through a zipper or a lock catch and the like. In order to enhance the durability and the light weight, etc., carbon fiber draw-bar boxes made of carbon fiber have also appeared on the market. However, in the process of forming the carbon fiber box body of the carbon fiber draw-bar box, vertical uneven burrs are easy to appear at the opening of the side surface due to the die, and because the burrs are more troublesome to trim, a worker is required to spend a lot of time for trimming (namely, cutting off the vertical burrs) to finish a complete product, so that the production efficiency is greatly reduced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide the forming die capable of reducing burrs at the opening of the carbon fiber box body during forming, which is simple and reasonable in structure, and can prevent the vertical burrs at the opening of the carbon fiber box body by using the forming die, so that the time for trimming by workers is saved, and the working efficiency is improved; simultaneously, it can also make carbon fiber box shaping back more pleasing to the eye and wholeness better.
In order to achieve the above object, the technical scheme of the present invention is as follows:
The forming die comprises a main die, an inflatable elastic inner die and a cover plate, wherein an inner cavity which is used for laying carbon fiber cloth and is provided with an opening at the upper end is arranged in the middle of the main die, and the inflatable elastic inner die is arranged in the inner cavity of the main die and can compress and shape the carbon fiber cloth through inflation; the forming die also comprises a pressing block; a step surrounding the inner cavity of the main die is arranged on the inner wall of the upper end of the main die; the pressing block is detachably arranged on the step, and the inner side of the pressing block extends inwards out of the inner wall of the main die to be attached to the top surface of the carbon fiber cloth; the cover plate is fixed above the main die.
As a specific embodiment, the inner side of the pressing block extends inward from the inner wall of the main die by a distance equal to the thickness of the carbon fiber cloth.
As a specific embodiment, an opening is arranged in the middle of the pressing block; the upper end of the inflatable elastic inner die extends to the upper part of the pressing block through the opening and is correspondingly arranged in a positioning step which is positioned on the main die and surrounds the inner cavity of the main die; the cover plate is pressed and fixed at the upper end of the inflatable elastic inner die, the bottom surface and the top surface of the upper end of the inflatable elastic inner die are respectively contacted with the main die and the cover plate, and the contact positions are of a sealing structure; the bottom surface of the step is provided with a vacuumizing diversion trench which surrounds the inner cavity of the main die and is communicated with the air outlet channel arranged on the main die.
Further, the bottom surface of the pressing block is provided with ventilation grooves penetrating through the inner wall and the outer wall of the pressing block.
Further, the ventilation grooves are formed in a plurality of ways, and the ventilation grooves are distributed around the pressing block.
Further, a diversion hole which is respectively communicated with the vacuumizing diversion trench and the air outlet channel is arranged on the bottom surface of the step; the diameter of the diversion hole is larger than the width of the vacuumizing diversion trench and the diameter of the air outlet channel.
As a specific embodiment, the main mold is fixedly connected with the cover plate through screws.
The beneficial effects of the invention are as follows:
The invention can prevent the vertical burrs from being generated at the opening position of the carbon fiber box body in the forming process, thereby facilitating the production and manufacturing of the box body by workers, saving the time for trimming, improving the production efficiency, and leading the carbon fiber box body produced by the invention to be more attractive and better in integrity and smoother in wall surface.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
Fig. 5 is an enlarged view at C in fig. 4;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 3;
fig. 7 is an enlarged view of D in fig. 6;
FIG. 8 is a schematic view of the overall structure of the main mold of the present invention;
FIG. 9 is a schematic view of the overall structure of the compact of the present invention;
fig. 10 is a schematic structural view of the carbon fiber tank of the present invention.
Reference numerals:
1. A main mold; 11. a step; 12. positioning the step; 13. an air outlet channel; 14. vacuumizing a diversion trench; 15. a deflector aperture; 2. an inflatable elastic internal mold; 3. a cover plate; 4. briquetting; 41. an opening; 42. a vent groove; 100. a carbon fiber cloth; 200. and the opening of the carbon fiber box body.
Detailed Description
The invention is further illustrated in the following drawings and examples, which are given by way of illustration only and do not limit the scope of the invention.
As shown in fig. 1 to 10, a molding die capable of reducing burrs at an opening of a carbon fiber box body during molding comprises a main die 1, an inflatable elastic inner die 2 and a cover plate 3, wherein an inner cavity which is used for laying carbon fiber cloth 100 (the surface of the carbon fiber cloth 100 is coated with resin) and is provided with an upper end opening is arranged in the middle of the main die 1, and the inflatable elastic inner die 2 is arranged in the inner cavity of the main die 1 and can compress and shape the carbon fiber cloth 100 through inflation; the forming die also comprises a pressing block 4; a step 11 surrounding the inner cavity of the main die 1 is arranged on the inner wall of the upper end of the main die 1; the pressing block 4 is detachably mounted on the step 11 and the inner side of the pressing block 4 inwardly extends out of the inner wall of the main die 1 to be attached to the top surface of the carbon fiber cloth 100, preferably, the inner side of the pressing block 4 inwardly extends out of the inner wall of the main die 1 by the same distance as the thickness of the carbon fiber cloth 100; the cover plate 3 is fixed above the main die 1, and specifically, the main die 1 is fixedly connected with the cover plate 3 through screws. Specifically, the pressing block 4, the main die 1 and the cover plate 3 are all made of metal. The pressing block 4 may be directly placed in the step 11 or may be screwed with the main mold 1, which is not particularly limited herein. In this embodiment, the inflation of the inflatable elastic inner mold 2 may be performed by using an air inlet channel which is disposed on the cover plate 3 and is connected to an air source, and the outlet of the air inlet channel is only required to be communicated with the inner cavity of the inflatable elastic inner mold 2, and it should be noted that the inflatable elastic inner mold 2 is not only a pattern in the drawings, but also an air bag or an air bag, etc., and is not particularly limited herein, and only the carbon fiber cloth 100 needs to be shaped in the process of shaping the carbon fiber cloth 100, and in this embodiment, the inflatable elastic inner mold 2 is an elastic inner mold with an inner cavity in the middle and an opening at the upper end. According to the invention, the carbon fiber cloth 100 paved in the main die 1 can be shaped by inflating the inflatable elastic inner die 2, and then the top surface of the carbon fiber cloth 100 is matched and attached by utilizing the inner bottom surface of the pressing block 4, so that no vertical (referring to the direction from bottom to top of the box body in fig. 10) burrs are generated at the opening 200 of the carbon fiber cloth 100 after the carbon fiber cloth 100 is molded, the time for trimming edges of workers is saved, and the working efficiency is improved.
As shown in fig. 5, 7 and 9, an opening 41 is provided in the middle of the briquette 4; the upper end of the inflatable elastic internal mold 2 extends to the upper part of the pressing block 4 through an opening 41 and is correspondingly arranged in a positioning step 12 which is positioned on the main mold 1 and surrounds the inner cavity of the main mold 1; the cover plate 3 compresses and fixes the upper end of the inflatable elastic internal mold 2, the bottom surface and the top surface of the upper end of the inflatable elastic internal mold 2 are respectively contacted with the main mold 1 and the cover plate 3, and the contact part is a sealing structure, specifically, as shown in fig. 5, the upper end of the inflatable elastic internal mold 2 is an outward extending outer edge, the inflatable elastic internal mold 2 is installed in the positioning step 12 through the outer edge and is compressed and fixed by the cover plate 3, and one skilled in the art should know that the sealing between the outer edge and the main mold 1 and the cover plate 3 can be realized as long as the thickness of the outer edge is set to be slightly larger than the height of the positioning step 12 due to the elasticity of the outer edge; the bottom surface of the step 11 is provided with a vacuumizing diversion trench 14 which surrounds the inner cavity of the main die 1 and is communicated with an air outlet channel 13 arranged on the main die 1. After the air outlet channel 13 is connected with the air extractor, the air between the carbon fiber cloth 100 and the inflatable elastic inner mold 2 and the air between the carbon fiber cloth 100 and the inner wall of the main mold 1 can flow to the vacuumizing guide channel 14 through the gap between the bottom surface of the pressing block 4 and the main mold 1 by utilizing the vacuumizing guide channel 14 and the air outlet channel 13 which are mutually communicated, and finally the air is discharged from the air outlet channel 13; meanwhile, redundant resin generated by extrusion of the carbon fiber cloth 100 in the forming process can flow to the vacuumizing diversion trench 14 through a gap between the bottom surface of the pressing block 4 and the main die 1, and finally vacuum is formed between the carbon fiber cloth 100 and the main die 1 and between the carbon fiber cloth 100 and the inflatable elastic inner die 2 by discharging the resin from the air outlet channel 13, so that the bonding between the carbon fiber cloth 100 and the lower die 1 is better, and the wall surface of the formed box body is smoother.
Specifically, as shown in fig. 9, ventilation grooves 42 penetrating through the inner wall and the outer wall of the briquette 4 are provided on the bottom surface of the briquette 4, and preferably, a plurality of ventilation grooves 42 are provided and distributed around the briquette 4. The ventilation grooves 22 can accelerate the flow of air and excessive resin to improve the working efficiency.
As shown in fig. 7, a diversion hole 15 which is respectively communicated with the vacuumizing diversion trench 14 and the air outlet channel 13 is arranged on the bottom surface of the step 11; the diameter of the diversion holes 15 is larger than the width of the vacuumizing diversion trenches 14 and the diameter of the air outlet channels 13. By providing the deflector hole 15, air and surplus resin can flow more smoothly.
Specifically, when the invention is used, after the pressing block 4 is installed, the cut carbon fiber cloth 100 is paved on the inner wall of the main die 1, and the top surface of the carbon fiber cloth 100 is matched and attached with the bottom surface of the inner side of the pressing block 4; then the inflatable elastic internal mold 2 and the cover plate 3 are installed; then, a certain amount of compressed air is passed through the inner cavity of the inflatable elastic inner mold 2 to expand the inflatable elastic inner mold 2, so as to finish the shaping of the carbon fiber cloth 100; then heating the forming die, and simultaneously, exhausting the air from the air outlet channel 13 through a connection air exhaust device, so that air and redundant resin between the carbon fiber cloth 100 and the inflatable elastic inner die 2 and air and redundant resin between the carbon fiber cloth 100 and the main die 1 flow out of the air outlet channel 13 through the vacuumizing guide groove 14, and the air exhaust time of the air exhaust device is not too long, otherwise, the quality of a product is easily influenced; after the forming die is heated for a certain time to fix and form the carbon fiber cloth 100, the whole forming die can be cooled and demoulded to obtain the carbon fiber box body shown in fig. 10, and the vertical burrs cannot occur at the opening part 200 of the carbon fiber box body, so that the time for trimming by workers is saved, and the production efficiency of the workers is improved.
The present invention is not limited to the above-described embodiments, but, if various modifications or variations of the present invention are not departing from the spirit and scope of the present invention, the present invention is intended to include such modifications and variations as fall within the scope of the claims and the equivalents thereof.
Claims (5)
1. The utility model provides a can reduce forming die of burr of opening part when carbon fiber box shaping, includes main mould, aerifys elasticity centre form and apron, the centre of main mould is equipped with and is used for laying carbon fiber cloth and upper end open-ended inner chamber, it sets up to aerify elasticity centre form in the inner chamber of main mould and can compress tightly the design through inflation with carbon fiber cloth, its characterized in that:
The forming die also comprises a pressing block; a step surrounding the inner cavity of the main die is arranged on the inner wall of the upper end of the main die; the pressing block is detachably arranged on the step, and the inner side of the pressing block extends inwards out of the inner wall of the main die to be attached to the top surface of the carbon fiber cloth; the cover plate is fixed above the main die;
An opening is arranged in the middle of the pressing block; the upper end of the inflatable elastic inner die extends to the upper part of the pressing block through the opening and is correspondingly arranged in a positioning step which is positioned on the main die and surrounds the inner cavity of the main die; the cover plate is pressed and fixed at the upper end of the inflatable elastic inner die, the bottom surface and the top surface of the upper end of the inflatable elastic inner die are respectively contacted with the main die and the cover plate, and the contact positions are of a sealing structure; the bottom surface of the step is provided with a vacuumizing diversion trench which surrounds the inner cavity of the main die and is communicated with an air outlet channel arranged on the main die;
and the bottom surface of the pressing block is provided with ventilation grooves penetrating through the inner wall and the outer wall of the pressing block.
2. The molding die capable of reducing burrs at an opening of a carbon fiber box body during molding according to claim 1, wherein:
The inner side of the pressing block extends inwards to the distance of the inner wall of the main die to be equal to the thickness of the carbon fiber cloth.
3. The molding die capable of reducing burrs at an opening of a carbon fiber box body during molding according to claim 1, wherein:
The ventilation grooves are arranged in a plurality of ways and distributed around the pressing block.
4. The molding die capable of reducing burrs at an opening of a carbon fiber box body during molding according to claim 1, wherein:
A diversion hole which is respectively communicated with the vacuumizing diversion trench and the air outlet channel is arranged on the bottom surface of the step; the diameter of the diversion hole is larger than the width of the vacuumizing diversion trench and the diameter of the air outlet channel.
5. The molding die capable of reducing burrs at an opening of a carbon fiber box body during molding according to claim 1, wherein:
the main die is fixedly connected with the cover plate through screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911135966.5A CN110900903B (en) | 2019-11-19 | Forming die capable of reducing burrs at opening during carbon fiber box forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911135966.5A CN110900903B (en) | 2019-11-19 | Forming die capable of reducing burrs at opening during carbon fiber box forming |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110900903A CN110900903A (en) | 2020-03-24 |
| CN110900903B true CN110900903B (en) | 2024-07-09 |
Family
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1442279A (en) * | 2003-04-11 | 2003-09-17 | 北京玻璃钢研究设计院 | Vacuum injection molding method for composite material |
| CN1603081A (en) * | 2004-11-04 | 2005-04-06 | 封明信 | Air pressure forming method for producing glass fibre reinforced plastic |
| CN211541996U (en) * | 2019-11-19 | 2020-09-22 | 龚建叶 | Forming die capable of reducing burrs at opening during forming of carbon fiber box |
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1442279A (en) * | 2003-04-11 | 2003-09-17 | 北京玻璃钢研究设计院 | Vacuum injection molding method for composite material |
| CN1603081A (en) * | 2004-11-04 | 2005-04-06 | 封明信 | Air pressure forming method for producing glass fibre reinforced plastic |
| CN211541996U (en) * | 2019-11-19 | 2020-09-22 | 龚建叶 | Forming die capable of reducing burrs at opening during forming of carbon fiber box |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |