CN105459420A - Keycap processing technology - Google Patents
Keycap processing technology Download PDFInfo
- Publication number
- CN105459420A CN105459420A CN201510931468.7A CN201510931468A CN105459420A CN 105459420 A CN105459420 A CN 105459420A CN 201510931468 A CN201510931468 A CN 201510931468A CN 105459420 A CN105459420 A CN 105459420A
- Authority
- CN
- China
- Prior art keywords
- keycap
- carbon fiber
- temperature
- pellet
- fiber layer
- 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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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
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/70—Completely encapsulating inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/06—Making preforms by moulding the material
- B29B11/08—Injection moulding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/88—Processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2055/00—Use of specific polymers obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of main groups B29K2023/00 - B29K2049/00, e.g. having a vinyl group, as moulding material
- B29K2055/02—ABS polymers, i.e. acrylonitrile-butadiene-styrene polymers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
Abstract
The invention relates to a keycap processing technology. The keycap processing technology includes the following steps that firstly, ABS plastic is processed into a tablet pumping material, and the table pumping material is processed into a keycap core body through the injection molding technology; secondly, a carbon fiber layer wraps the keycap core body to form a keycap body, heating and pressurization are conducted on the keycap body, and then cooling and depressurization are conducted; thirdly, multiple arc-shaped grooves are formed in the edge of the keycap body processed in the second step at intervals, wherein the diameter of the arc-shaped grooves is 0.1-0.5 mm; and fourthly, the keycap body processed in the third step is baked and then cooled, radium engraving is conducted so that a character can be formed in the surface of the keycap body, and a keycap finished product is obtained. When a keycap is produced through the technology, the product quality and yield are effectively improved.
Description
Technical field
The present invention relates to a kind of keycap processing technology.
Background technology
Keyboard is electronic installation (such as computer or mobile phone) epochmaking input equipment, and button is the critical piece of composition keyboard.Keycap is positioned at the top of button, is keyboard sense of touch operation continuing surface.Existing keycap is usually injection molded by ABS plastic, and in cooling forming process, due to the release of internal stress, keycap generation deformation, can cause the edge of keycap to be cambered surface, greatly reduces quality and the yields of keycap.
Summary of the invention
In view of this, the object of this invention is to provide a kind of can improving the quality of products and the keycap processing technology of yields.
For achieving the above object, keycap processing technology of the present invention, comprises the steps:
1) ABS plastic is processed, formed and take out pellet, described pellet of taking out is processed to form keycap core body by Shooting Technique;
2) obtain keycap body at keycap core body outer cladding carbon fiber layer, after temperature-pressure process is carried out to keycap body, carry out decrease temperature and pressure process again;
3) by through step 2) keycap body marginating compartment after process offers many deep-slotted chip breakers, and the diameter of described deep-slotted chip breaker is 0.1-0.5mm;
4) by through step 3) keycap body toast after carry out cooling process again, carry out radium carving subsequently to form character on its surface, obtain keycap finished product.
Further, described step 2) in temperature-pressure process is carried out to keycap body, be specially: according to 160-170 DEG C, the condition of 50-80MPa, 10-11.5 minute carries out.
Further, described step 2) in decrease temperature and pressure process is carried out to keycap body, be specially: reduce the temperature to 15-18 DEG C, air pressure drops to atmospheric pressure.
Further, described step 4) in baking temperature be 60-70 DEG C, reduce the temperature to 15-18 DEG C after baking.
Further, described step 2) in, will at least be coated on outside keycap core body by 2N layer carbon fiber layer, wherein, N be the positive integer be more than or equal to.
Further, if when described carbon fiber layer is 2 layers, the angle between described 2 layers of carbon fiber is set to 180 °; If when described carbon fiber layer is 4 layers, the angle between carbon fiber described in every adjacent two layers is set to 90 °.
Further, be mixed into white carbon pellet taking out in pellet, white carbon is 1-3:1000 with the mass ratio taking out pellet.
Advantageous Effects of the present invention is:
1. this process, at keycap core body outer cladding carbon fiber layer, and carry out temperature-pressure process, keycap core body and carbon fiber layer are merged completely, the top layer that carbon fiber layer is formed enhances the intensity of keycap core body, greatly reduce the deformation rate of keycap body cooling forming, effectively improve product quality and yields.
2. on keycap body, offer deep-slotted chip breaker, then carry out process of toasting and lower the temperature, deep-slotted chip breaker can discharge the internal stress of keycap body, reduce further the deformation rate of keycap body cooling forming, reduces the probability that keycap product edge is cambered surface.
3. take out in pellet and be mixed into white carbon pellet, the gas produced in injection molding process can be adsorbed, avoid bulge phenomenon, thus reduce further the probability of keycap body deformability.
Detailed description of the invention
Below in conjunction with embodiment and experimental data, to above-mentioned being described in more detail with other technical characteristic and advantage of the present invention.
Embodiment 1: keycap processing technology
Comprise the steps:
1) processed by ABS plastic, formed and take out pellet, be mixed into white carbon pellet and form compound taking out in pellet, white carbon is 1:1000 with the mass ratio taking out pellet, and described compound is processed to form keycap core body by Shooting Technique;
2) obtain keycap body at keycap core body outer cladding carbon fiber layer, after temperature-pressure process is carried out to keycap body, carry out decrease temperature and pressure process again; Wherein carbon fiber layer comprises 2 layers of carbon fiber, and the angle of 2 layers of carbon fiber is 180 °, and namely in second layer carbon fiber layer, in carbon fiber bundle and ground floor carbon fiber layer, the angle of carbon fiber bundle is 180 °, to guarantee that carbon fiber layer can have good horizontal stretch-proof effect; Wherein the detailed process of temperature-pressure process is: according to 160 DEG C, 50MPa, the condition of 10 minutes carry out; The detailed process of decrease temperature and pressure process is: reduce the temperature to 15 DEG C, air pressure drops to atmospheric pressure;
3) by through step 2) keycap body marginating compartment after process offers many deep-slotted chip breakers, and the diameter of described deep-slotted chip breaker is 0.1mm;
4) by through step 3) keycap body toast after carry out cooling process again, concrete, described baking temperature is 60 DEG C, reduces the temperature to 15 DEG C after baking, carries out radium carving subsequently to form character on its surface, obtains keycap finished product.
Embodiment 2: keycap processing technology
Comprise the steps:
1) processed by ABS plastic, formed and take out pellet, be mixed into white carbon pellet and form compound taking out in pellet, white carbon is 2:1000 with the mass ratio taking out pellet, and described compound is processed to form keycap core body by Shooting Technique;
2) obtain keycap body at keycap core body outer cladding carbon fiber layer, after temperature-pressure process is carried out to keycap body, carry out decrease temperature and pressure process again; Wherein carbon fiber layer comprises 4 layers of carbon fiber, and the angle described in every adjacent two layers between carbon fiber is set to 90 °, after shaping like this, can have well horizontal and longitudinal stretch-proof effect between 4 layers of carbon fiber; Wherein the detailed process of temperature-pressure process is: according to 165 DEG C, 65MPa, the condition of 11 minutes carry out; The detailed process of decrease temperature and pressure process is: reduce the temperature to 17 DEG C, air pressure drops to atmospheric pressure;
3) by through step 2) keycap body marginating compartment after process offers many deep-slotted chip breakers, and the diameter of described deep-slotted chip breaker is 0.3mm;
4) by through step 3) keycap body toast after carry out cooling process again, concrete, described baking temperature is 65 DEG C, reduces the temperature to 17 DEG C after baking, carries out radium carving subsequently to form character on its surface, obtains keycap finished product.
Embodiment 3: keycap processing technology
Comprise the steps:
1) processed by ABS plastic, formed and take out pellet, be mixed into white carbon pellet and form compound taking out in pellet, white carbon is 3:1000 with the mass ratio taking out pellet, and described compound is processed to form keycap core body by Shooting Technique;
2) obtain keycap body at keycap core body outer cladding carbon fiber layer, after temperature-pressure process is carried out to keycap body, carry out decrease temperature and pressure process again; Wherein carbon fiber layer comprises 4 layers of carbon fiber, and the angle described in every adjacent two layers between carbon fiber is set to 90 °, after shaping like this, can have well horizontal and longitudinal stretch-proof effect between 4 layers of carbon fiber; Wherein the detailed process of temperature-pressure process is: according to 170 DEG C, 80MPa, the condition of 11.5 minutes carry out; The detailed process of decrease temperature and pressure process is: reduce the temperature to 18 DEG C, air pressure drops to atmospheric pressure;
3) by through step 2) keycap body marginating compartment after process offers many deep-slotted chip breakers, and the diameter of described deep-slotted chip breaker is 0.5mm;
4) by through step 3) keycap body toast after carry out cooling process again, concrete, described baking temperature is 70 DEG C, reduces the temperature to 18 DEG C after baking, carries out radium carving subsequently to form character on its surface, obtains keycap finished product.
In addition, with the processing technology of prior art embodiment as a comparison.
Adopt the processing technology of embodiments of the invention and the processing technology of comparative example to produce keycap respectively, its yields statistics is as table 1, specific as follows:
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example | |
| Yields | 98.72％ | 99.65％ | 98.93％ | 90.78％ |
Table 1
As can be drawn from Table 1, adopt process of the present invention, compared to existing technology, its yields substantially increases.
In addition, adopt the keycap that process of the present invention obtains, compared to existing technology, its main performance index tensile strength improves 30%-40%, and compression strength improves 25%-35%.Substantially increase product quality.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (7)
1. a keycap processing technology, is characterized in that, comprises the steps:
1) ABS plastic is processed, formed and take out pellet, described pellet of taking out is processed to form keycap core body by Shooting Technique;
2) obtain keycap body at keycap core body outer cladding carbon fiber layer, after temperature-pressure process is carried out to keycap body, carry out decrease temperature and pressure process again;
3) by through step 2) keycap body marginating compartment after process offers many deep-slotted chip breakers, and the diameter of described deep-slotted chip breaker is 0.1-0.5mm;
4) by through step 3) keycap body toast after carry out cooling process again, carry out radium carving subsequently to form character on its surface, obtain keycap finished product.
2. technique according to claim 1, is characterized in that: described step 2) in temperature-pressure process is carried out to keycap body, be specially: according to 160-170 DEG C, the condition of 50-80MPa, 10-11.5 minute carries out.
3. technique according to claim 1, is characterized in that: described step 2) in decrease temperature and pressure process is carried out to keycap body, be specially: reduce the temperature to 15-18 DEG C, air pressure drops to atmospheric pressure.
4. technique according to claim 1, is characterized in that: described step 4) in baking temperature be 60-70 DEG C, reduce the temperature to 15-18 DEG C after baking.
5. technique according to claim 1, is characterized in that: described step 2) in, will at least be coated on outside keycap core body by 2N layer carbon fiber layer, wherein, N be the positive integer be more than or equal to.
6. technique according to claim 5, is characterized in that:
If when described carbon fiber layer is 2 layers, the angle between described 2 layers of carbon fiber is set to 180 °;
If when described carbon fiber layer is 4 layers, the angle between carbon fiber described in every adjacent two layers is set to 90 °.
7. technique according to claim 1, is characterized in that: be mixed into white carbon pellet taking out in pellet, and white carbon is 1-3:1000 with the mass ratio taking out pellet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510931468.7A CN105459420B (en) | 2015-12-15 | 2015-12-15 | Keycap processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510931468.7A CN105459420B (en) | 2015-12-15 | 2015-12-15 | Keycap processing technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105459420A true CN105459420A (en) | 2016-04-06 |
| CN105459420B CN105459420B (en) | 2019-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510931468.7A Active CN105459420B (en) | 2015-12-15 | 2015-12-15 | Keycap processing technology |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404222A (en) * | 2008-10-24 | 2009-04-08 | 苏州达方电子有限公司 | Press key and key board |
| CN101490777A (en) * | 2006-07-14 | 2009-07-22 | 三箭株式会社 | Keytop and method for manufacturing the same |
| US20140014487A1 (en) * | 2012-07-12 | 2014-01-16 | Akai Professional, L.P. | Button matrix and method of molding thereof |
| CN103740035A (en) * | 2013-12-05 | 2014-04-23 | 珠海市智迪科技有限公司 | Key cap processing method and key caps |
| US20140261995A1 (en) * | 2013-03-15 | 2014-09-18 | Logitech Europe S.A. | Systems and methods for imprinting font on a key cap |
| CN104385625A (en) * | 2014-09-30 | 2015-03-04 | 北京空间机电研究所 | Composite material thin-wall housing preparation method based on unloading hole |
-
2015
- 2015-12-15 CN CN201510931468.7A patent/CN105459420B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101490777A (en) * | 2006-07-14 | 2009-07-22 | 三箭株式会社 | Keytop and method for manufacturing the same |
| CN101404222A (en) * | 2008-10-24 | 2009-04-08 | 苏州达方电子有限公司 | Press key and key board |
| US20140014487A1 (en) * | 2012-07-12 | 2014-01-16 | Akai Professional, L.P. | Button matrix and method of molding thereof |
| US20140261995A1 (en) * | 2013-03-15 | 2014-09-18 | Logitech Europe S.A. | Systems and methods for imprinting font on a key cap |
| CN103740035A (en) * | 2013-12-05 | 2014-04-23 | 珠海市智迪科技有限公司 | Key cap processing method and key caps |
| CN104385625A (en) * | 2014-09-30 | 2015-03-04 | 北京空间机电研究所 | Composite material thin-wall housing preparation method based on unloading hole |
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| Publication number | Publication date |
|---|---|
| CN105459420B (en) | 2019-03-19 |
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