CN1330476C - Method for molding connector of optical fiber made from thermosetting material - Google Patents
Method for molding connector of optical fiber made from thermosetting material Download PDFInfo
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- CN1330476C CN1330476C CNB031033423A CN03103342A CN1330476C CN 1330476 C CN1330476 C CN 1330476C CN B031033423 A CNB031033423 A CN B031033423A CN 03103342 A CN03103342 A CN 03103342A CN 1330476 C CN1330476 C CN 1330476C
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- thermosetting
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Abstract
The present invention relates to a method for molding a connector of optical fiber made from thermosetting materials. Liquid thermosetting plastic raw material is supplied to a material tube, and the front end of the material tube is matched with a mold. The temperature of the mold is maintained within a preset temperature range controlled by a mold temperature controlling device. A plunger piston in the material tube is controlled to move forward, and the liquid material is injected to the mold. Simultaneously, a pressure sensing device is used for sensing pressure in the material tube so as to control the movement of the plunger piston, and the preset pressure value of the liquid raw material is reached and is maintained for some time. After the solidification of the thermosetting liquid material injected into the mold is completed because of the heat degree of the mold, the mold is opened, and a finished product is pushed out.
Description
Technical field
The present invention is relevant with the optical communication product, in detail, is about a kind of thermosetting material joints of optical fibre forming method.
Background technology
The headgear of the known joints of optical fibre (Ferrule) manufacture method, nothing more than adopting injection molding (Injection Molding) with thermoplastic plastic (for example PPS+SiO2), perhaps adopt (Transfer Molding) the two kinds of methods that are shaped that transmit with thermosetting plastic (for example Epoxy+SiO2), wherein, the former production of (thermoplastic plastic is with injection molding) is preferable, forming period is greatly about about 30 seconds, but the weatherability of its finished product, durability is relatively poor, usually in order to make the joints of optical fibre of low core number, relative, latter's's (thermosetting plastic is shaped to transmit) finished product is comparatively weather-proof durable, be the mode of production of general traditional joints of optical fibre headgear, but its forming period is grown (about about 90 seconds), production is poor, and (can't the utilize again) waste material that is produced is more, causes environmental issue.
On the other hand, the manufacture method of the vee-cut array of the known joints of optical fibre (V-groove array), then based on the manufacture method of silicon substrate etching or glass substrate disc sharpener, yet the equipment investment in modes such as etching or disc sharpener machine silicon substrate or glass substrates is fully big, and production is not as injection molding.
Summary of the invention
Main purpose of the present invention is to provide a kind of forming method of the thermosetting material trade joints of optical fibre, can have the durability of the production and the thermosetting product of thermoplastic product concurrently.
For achieving the above object, the forming method of the thermosetting material joints of optical fibre provided by the present invention includes the following step:
Step a: the liquid thermosetting plastic material is supplied in the material pipe with a feeding device; Make the nozzle of this material pipe front end and the running channel of a mould enter the mouth involutory simultaneously; This mould is maintained in the predetermined temperature range by a mould temperature control device, and aforementioned temperature is enough to make this liquid thermosetting plastic material reaction and solidifies;
Step b: control make the plunger in this material pipe move forward to, the aforementioned liquid material in this material pipe is injected in this mould via this nozzle; Utilize the pressure in this material pipe of a pressure-sensing device sensing simultaneously, this sensing apparatus can be sent corresponding signal to control the motion of this plunger, so that the pressure in this material pipe arrives a predetermined value and keeps one period scheduled time of predetermined pressure according to force value;
Step c: keeping under the state of aforementioned predetermined pressure, the aforementioned hot solidity plastic material that flows in this mould is subjected to the mould temperature and reacts sclerosis, and after reaction was finished, control made this mould die sinking and pushing-off product.
Wherein: with a channel connection, this passage is provided with a backstop between this feeding device and this material pipe, can make that aforementioned liquid material is unlikely to return this feeding device by this material tube side surface current.
Wherein: this material pipe can be driven control and displacement, and its front end is provided with the nozzle control device that can control this nozzle opening and closing of fault; When this feeding device is supplied with aforementioned liquid material to this material pipe, this material pipe and this mould preset distance of being separated by, and this nozzle control device control makes this nozzle be closed state; After finishing metering, just order about this material pipe and be moved to this mould and engage, and open this nozzle; After treating that thermosetting liquid material sclerosis in this mould is finished, order about this material pipe again and break away from this mould.
Description of drawings
Following conjunction with figs. is lifted a preferred embodiment, and the present invention is described in detail, wherein:
Fig. 1 is the process schematic diagram of a preferred embodiment of the present invention, shows the state of metering phase;
Fig. 2 is the process schematic diagram of a preferred embodiment of the present invention, shows the state in ejaculation stage; And
Fig. 3 is the outline flowchart of a preferred embodiment of the present invention.
The specific embodiment
The former that concise and to the point earlier description a preferred embodiment of the present invention is used (the formal again explanation of next section forming method of the present invention), please consult Fig. 1 earlier, this equipment includes substantially: a mould (12), form with two templates (14) matched moulds, (annotate: this mould (12) has micron-sized precision to the die cavity (16) of its inner formation one corresponding finished form, its preparation method and structure are common technology, for example the disclosed technology contents of US6342170B01 patent " manufacture method of multi-core fiber branch sleeve and mould "); One mould temperature control device (18) can make this mould (12) maintain in the predetermined temperature range, and present embodiment is in template (14) inside some heating rods (22) to be set, so that stable thermal source (present embodiment is controlled at about 180 ℃) to be provided; One ejecting device, be located on the slippage platform (26), mainly comprise a material pipe (28), one plunger (32) and a plunger control device (34), this material pipe (28) front end forms a nozzle (36), and be provided with a nozzle control device (38) and can control this nozzle (36) opening and closing of fault, this plunger (32) is located at material pipe (34) rear, front end is stretched in the feeding pipe (28), this plunger driving device (34) then can order about plunger (32) and advance or retreat, in addition, ejecting device (the slippage platform (26) at place) can be driven control and advance or retreat, so that the nozzle (36) of material pipe (28) front end engages running channel inlet (42) (as shown in Figure 2) of this mould (12), perhaps make material pipe (28) recess mould (12) (as shown in Figure 1); One feeding device (44), solidify the liquid thermosetting plastic material of (fast cure) in order to store the energy fast reaction, and be communicated to this material pipe (28) with a passage (46), aforementioned liquid material can be managed (28) inside via this passage (46) for past material, in addition, this passage (46) is provided with a backstop (48), can make aforementioned liquid material unlikely by expecting that pipe (28) aspect flows back to feeding device (44); One pressure-sensing device (52), but this material of sensing is managed the pressure in (18) and is sent corresponding signal.(annotate: this former still should comprise the middle control unit that can integrate aforementioned all devices, but not shown in the figures, and also will not particularly point out in following action specification.)
Please cooperate and consult Fig. 3, the thermosetting material joints of optical fibre forming method that a preferred embodiment of the present invention provides includes the following step (following is the single cycle):
Step 1: under this ejecting device and this mould (12) were separated by preset distance, this feeding device (44) made aforementioned liquid thermosetting plastic material enter in this material pipe (28) via this passage (46) (and by wherein backstop (48)); At this moment, this nozzle control device (38) control makes this nozzle (26) be closed state, and feasible material pipe (28) inside builds up aforementioned liquid material and continues to boost, and allows this plunger (32) slowly retreat to stopping at the precalculated position.Feeding device (44) continues toward this material pipe (28) feed, records material pipe (28) pressure inside until this pressure-sensing device (52) and arrives predetermined value (the representative metering is finished) and send signal and make this feeding device (44) stop feed.As shown in Figure 1.
Step 2: after metering was finished, this ejecting device was transferred to the location forward, made the nozzle (36) of this material pipe (28) front end be engaged in the running channel inlet (42) of this mould (12).
Step 3: begin to penetrate operation, at first this nozzle control device (38) can control make this nozzle (36) be opening, this plunger control device (34) control of now is advanced this plunger (32), inject (annotate: the backstop (48) of this passage this moment (46) plays a role, and makes the unlikely feeding device (44) that flows back to of aforementioned liquid material) in this mould (12) will expect the liquid material footpath in the pipe (28) by nozzle (36).This pressure-sensing device (52) continues sensing pressure in should material pipe (28), and sends corresponding signal and make this plunger control device (38) suitably control this plunger (32), makes aforementioned liquid expect the force value that reaches setting and keeps one pre-period of this pressure.As shown in Figure 2.
Step 4: in pressurize, the liquid thermosetting plastic material that is injected in this mould (12) can react curing because being subjected to (pre-heated) mould (16) temperature, after finishing, reaction (promptly passes through after the scheduled time), order about this ejecting device and recess mould (12), control mould (12) die sinking simultaneously, again finished product is ejected.The present invention can be in order to the headgear and the vee-cut array of the shaping joints of optical fibre.
More than be the flow process of the thermosetting material joints of optical fibre forming method that a preferred embodiment of the present invention provides.Compared to traditional joints of optical fibre forming method, forming method advantage provided by the present invention is: the durability that can have the production and the thermosetting product of thermoplastic product concurrently, in fact, molding cycle of the present invention can reach in 35 seconds, was much better than traditional thermosetting plastic and adopted 90 second cycle of transmitting forming process; In addition, the present invention can design heat-shield mechanism on mould, makes that the thermosetting liquid material in the running channel (sprue), runner (runner) can remain on relative low temperature and can not react curing, reduces the generation (nearly can reduce 50%) of waste material thus, and the feature of environmental protection is preferable.
Claims (3)
1, a kind of thermosetting material joints of optical fibre forming method includes the following step:
Step a: with a feeding device liquid thermosetting plastic material is supplied in the material pipe and makes material pipe inside build up described liquid material and continue to boost; Make the nozzle of this material pipe front end and the running channel of a mould enter the mouth involutory simultaneously; This mould is maintained in the predetermined temperature range by a mould temperature control device, and aforementioned temperature is enough to make this liquid thermosetting plastic material reaction and solidifies;
Step b: control make the plunger in this material pipe move forward to, the aforementioned liquid material in this material pipe is injected in this mould via this nozzle; Utilize the pressure in this material pipe of a pressure-sensing device sensing simultaneously, this sensing apparatus is sent corresponding signal to control the motion of this plunger, so that the pressure in this material pipe arrives a predetermined value and keeps one period scheduled time of predetermined pressure according to force value;
Step c: keeping under the state of aforementioned predetermined pressure, the aforementioned hot solidity plastic material that flows in this mould is subjected to the mould temperature and reacts sclerosis, and after reaction was finished, control made this mould die sinking and pushing-off product.
2, according to the described thermosetting material of claim 1 joints of optical fibre forming method, it is characterized in that, wherein: with a channel connection, this passage is provided with a backstop between this feeding device and this material pipe, makes that aforementioned liquid material is unlikely to return this feeding device by this material tube side surface current.
According to the described thermosetting material of claim 1 joints of optical fibre forming method, it is characterized in that 3, wherein: this material pipe is driven control and displacement, and its front end is provided with the nozzle control device that can control this nozzle opening and closing of fault; When this feeding device is supplied with aforementioned liquid material to this material pipe, this material pipe and this mould preset distance of being separated by, and this nozzle control device control makes this nozzle be closed state; After finishing metering, order about this material pipe and be moved to this mould and engage, and open this nozzle; After treating that thermosetting liquid material sclerosis in this mould is finished, order about this material pipe again and break away from this mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031033423A CN1330476C (en) | 2003-01-22 | 2003-01-22 | Method for molding connector of optical fiber made from thermosetting material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031033423A CN1330476C (en) | 2003-01-22 | 2003-01-22 | Method for molding connector of optical fiber made from thermosetting material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1519096A CN1519096A (en) | 2004-08-11 |
| CN1330476C true CN1330476C (en) | 2007-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031033423A Expired - Fee Related CN1330476C (en) | 2003-01-22 | 2003-01-22 | Method for molding connector of optical fiber made from thermosetting material |
Country Status (1)
| Country | Link |
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| CN (1) | CN1330476C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102152453B (en) * | 2004-12-03 | 2012-08-29 | 财团法人工业技术研究院 | Two-section type injection moulding machine with pressure sensing device |
| CN102756437B (en) * | 2011-04-26 | 2016-09-28 | 深圳市宇轩网络技术有限公司 | Joints of optical fibre mould and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5080460A (en) * | 1991-02-25 | 1992-01-14 | Amp Incorporated | Crimp and cleave assembly of an optical connector and method of making same |
| US5131063A (en) * | 1990-11-16 | 1992-07-14 | Amp Incorporated | Crimp and cleave assembly of an optical connector |
| JPH06155512A (en) * | 1992-11-17 | 1994-06-03 | Sumitomo Electric Ind Ltd | Molding resin, resin molding method and device |
| JP2001315156A (en) * | 2000-05-02 | 2001-11-13 | Sumitomo Electric Ind Ltd | Method for molding optical connector ferrule |
-
2003
- 2003-01-22 CN CNB031033423A patent/CN1330476C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5131063A (en) * | 1990-11-16 | 1992-07-14 | Amp Incorporated | Crimp and cleave assembly of an optical connector |
| US5080460A (en) * | 1991-02-25 | 1992-01-14 | Amp Incorporated | Crimp and cleave assembly of an optical connector and method of making same |
| JPH06155512A (en) * | 1992-11-17 | 1994-06-03 | Sumitomo Electric Ind Ltd | Molding resin, resin molding method and device |
| JP2001315156A (en) * | 2000-05-02 | 2001-11-13 | Sumitomo Electric Ind Ltd | Method for molding optical connector ferrule |
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| Publication number | Publication date |
|---|---|
| CN1519096A (en) | 2004-08-11 |
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Granted publication date: 20070808 Termination date: 20190122 |