CN104085083A - Liquid silicone rubber injection mold - Google Patents
Liquid silicone rubber injection mold Download PDFInfo
- Publication number
- CN104085083A CN104085083A CN201410277625.2A CN201410277625A CN104085083A CN 104085083 A CN104085083 A CN 104085083A CN 201410277625 A CN201410277625 A CN 201410277625A CN 104085083 A CN104085083 A CN 104085083A
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- Prior art keywords
- glue
- groove
- matrix
- enter
- rubber
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- 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
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2616—Moulds having annular mould cavities
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a liquid silicone rubber injection mold used for injection forming of a rubber edge structure at the side edge of a basal body. The liquid silicone rubber injection mold includes a front mold plate, a front mold core, a back mold plate, a back mold core and a pouring sleeve, and is characterized in that: the back mold core is provided with a basal body fixing groove, a rubber inlet groove communicated with the pouring sleeve, and a rubber overflow area; the basal body fixing groove is used for fixing the basal body, and a silicone rubber edge forming cavity is formed between the side edge of the basal body and the sidewall of the basal body fixing groove after the basal body is fixed and the mold is clamped; the rubber inlet groove is arranged along the sidewall of the basal body fixing groove; after mold clamping, a rubber inlet channel for communicating the rubber inlet groove and the silicone rubber edge forming cavity is formed between the top of the sidewall of the basal body fixing body and the front mold core; the rubber overflow area is arranged along one side, far away from the rubber edge forming cavity, of the rubber inlet groove, and is communicated with the rubber inlet groove through a rubber overflow channel; and the bottom of the rubber inlet channel is lower than the bottom of the rubber overflow channel. The liquid silicone rubber injection mold has the advantage of being good in injection effect and easy to control.
Description
Technical field
The present invention relates to a kind of liquid-state silicon gel injection mold.
Background technology
Publication number is that 103516846A Chinese invention patent document discloses a kind of technology of making waterproof anticollision silica gel edge on glass side.Figure 1 shows that its disclosed structure with the glass of silica gel edge, wherein 1 is glass, and 2 for being positioned at the silica gel edge of glass periphery; Figure 2 shows that its disclosed injection mold, it is by forming cavity 3 peripheries, a plurality of glue-feeders being set, and by additional flow path groove 33 so that glue is led to a plurality of glue-feeders that are communicated with forming cavity, to reduce injection pressure; Exhaust outlet 32 is set between glue-feeder to realize exhaust and to avoid the glue that overflows simultaneously, this mould is also provided with vacuum hole 31.The prior art can reduce the pressure of injecting glue really to a certain extent, but still has following defect: 1) a plurality of gum-injecting ports are still very limited to reducing with the effect of balance injection pressure; 2) owing to being provided with a plurality of gum-injecting ports and exhaust outlet, between gum-injecting port and glue limit, have many redundancy glue, glue limit surface irregularity, and increased injecting glue aftertreatment technology difficulty; 3) use this Mold Making adhesive tape to need point-device control into glue amount, otherwise product may exist defect, but because adhesive tape glue consumption is very little, the control itself of entering glue amount is very difficult, and the setting of a plurality of glue-feeders and exhaust outlet has further increased and has entered the difficulty that glue amount is accurately controlled.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of better liquid-state silicon gel injection mold, for the side injection moulding formation silica gel edge structure at matrix.
Technical problem of the present invention is solved by following means:
A liquid-state silicon gel injection mold, forms glue limit structure for side injection moulding at matrix, comprises front template, is fixed on front cavity, rear pattern plate in described front template, is fixed on the rear cavity in described rear pattern plate and enters to water cover;
Described rear cavity be provided with matrix holddown groove, with described in enter to water that cover is communicated with enters glue groove and Yi Jiao district;
Described matrix holddown groove is used for fixing described matrix, and fixes also and between the side of described matrix and the sidewall of described matrix holddown groove, form glue edge forming chamber after matched moulds at described matrix;
Describedly enter glue groove along the sidewall setting of described matrix holddown groove, and after matched moulds, between the top side wall of described matrix holddown groove and described front cavity, form described in being communicated with, enter glue groove and described glue edge forming chamber enter glue passage;
Described Yi Jiao district along described in enter glue groove away from a side setting in described glue edge forming chamber, and by overflow glue passage with described in enter glue groove and be communicated with;
Describedly enter the bottom of glue passage lower than the bottom of described excessive glue passage.
Preferably: described in enter glue passage depth bounds be 0.02-0.05mm.
Described excessive glue passage is to enter glue groove described in after matched moulds away from the excessive glue-line gap forming between the top side wall in described glue edge forming chamber and described front cavity.
The depth bounds of described excessive glue-line gap is 0.01-0.03mm.
In described matrix holddown groove, be provided with matrix detent mechanism, for locating the position of described matrix in described matrix holddown groove.
Described glue edge forming chamber is the annular chamber around described matrix, described in enter to water the cannelure of groove for arranging around described glue edge forming chamber, described in to enter glue passage be the circular passage that extends to the sidewall of whole described matrix holddown groove.
Compared with prior art, mould of the present invention, in whole process, owing to entering to water passage along sidewall setting, enter to water that passage forms by the top of sidewall and front cavity, it is to overflow into along whole sidewall that glue enters glue edge forming chamber, rather than single-point or Multi-spot pouring, on the one hand, do not need very high injection pressure just can realize injecting glue; On the other hand, due to the mobility of glue, the liquid level of glue each position in glue edge forming chamber is synchronous rising, and therefore, gas can be discharged into into watering in groove or excessive glue region by liquid level top; Moreover the set-up mode due to overflow glue region and excessive glue passage, adopts injection mold of the present invention to carry out injection moulding and also can reduce the control accuracy requirement to glue injection rate.
Accompanying drawing explanation
Fig. 1 is the structural representation of the glass basis that is provided with glue limit of prior art;
Fig. 2 is the structural representation of the liquid-state silicon gel injection mold of prior art;
Fig. 3 is the liquid-state silicon gel injection mold structure schematic diagram of the specific embodiment of the invention;
Fig. 4 is the rear pattern plate of Fig. 1 and the structural representation of rear cavity;
Fig. 5 is the enlarged drawing of region A in Fig. 4;
Fig. 6 is the liquid-state silicon gel injection molding channel schematic diagram of the specific embodiment of the invention.
The specific embodiment
Below in conjunction with preferred embodiment the invention will be further described.
As shown in Fig. 3-6, the liquid-state silicon gel injection mold of the present embodiment is to form for the side at matrix the liquid-state silicon gel injection mold that glue limit structure is used, such as: the side at matrixes such as electronic product display screen glass, shell on the backs forms glue limit for waterproof, anticollision, dustproof.This injection mold comprises front template 100, be fixed on front cavity 200, rear pattern plate 300 in described front template, be fixed on the rear cavity 400 in described rear pattern plate and enter to water cover 500.
Rear cavity 400 is provided with matrix holddown groove 410, enters to water Cao420He Yi glue district 430.
Matrix holddown groove with 410 in fixing base 001, after matrix 001 is fixing, between the sidewall 411 of the side of matrix 001 and matrix holddown groove 410, there is predetermined interval, after matched moulds, between the sidewall 411 of the side of matrix 001 and matrix holddown groove 410, just form glue edge forming chamber 440, the silica gel of injection moulding sticks together the glue limit on matrix 001 side in these glue edge forming chamber 440 interior moulding formation.
Enter glue groove 420 and arrange along the sidewall 411 of matrix holddown groove 410, after matched moulds, between sidewall 411 tops of matrix holddown groove 410 and front cavity 200, form to be communicated with and enter glue passage 450 into glue groove 420 and glue edge forming chamber 440; 430, Er Yijiao district is arranged on the side away from glue edge forming chamber 440 into glue groove 420, and by overflow glue passage 460 with enter glue groove 420 and be communicated with; Enter the bottom of glue passage 450 lower than the bottom of the glue passage 460 that overflows.
During injection moulding, matrix 001 is fixed in matrix holddown groove 410, then matched moulds carries out injection moulding, glue enters into glue groove 420 through entering to water cover 500, owing to entering to water the bottom of the bottom (being the top of sidewall 411) of passage 450 lower than the glue passage 460 that overflows, liquid level in glue is entering to water groove 420 is during higher than the sidewall 411 of matrix holddown groove 410, glue starts to overflow across sidewall 411 and flows into glue edge forming chamber 440 through entering to water passage 450, and while only having glue liquid level in glue edge forming chamber 440 higher than the top of sidewall 411, the glue passage 460 that overflows is continued to rise to the glue liquid level of entering to water in groove 420 in glue edge forming chamber 440, glue starts in the glue passage 460Yi Zhiyi glue district 430 of overflowing, and now in glue edge forming chamber 440 substantially injecting glue complete.In whole process, owing to entering to water passage 450, along sidewall 411, arrange, enter to water that passage 450 forms by the top of sidewall 411 and front cavity 200, it is to overflow into along whole sidewall 411 that glue enters glue edge forming chamber 440, rather than single-point or Multi-spot pouring, on the one hand, do not need very high injection pressure just can realize injecting glue; On the other hand, due to the mobility of glue, the liquid level of glue each position in glue edge forming chamber 440 is synchronous rising, and therefore, gas can be discharged into into watering in Cao420Huo Yi glue district 430 by liquid level top; Moreover due to the set-up mode of Yi Jiao district and excessive glue passage, the liquid-state silicon gel injection mold of employing the present embodiment carries out injection moulding and also can reduce the control accuracy requirement to glue injection rate.
Preferably, embodiment as shown in Figure 4 and Figure 5, glue edge forming chamber 440 is the annular chamber around matrix 001, enters to water the cannelure of groove 420 for arranging around glue edge forming chamber 430, enters glue passage 450 for extending to the circular passage of the sidewall 411 of whole matrix holddown groove 410.This preferred embodiment can be realized the glue marginal not of the whole side of matrix is moulded.Er Yijiao district 430 can be that rear cavity 400 is being entered the cavity of glue groove 420 away from a side formation in glue edge forming chamber 440 with front cavity 200,460, the glue passage that overflows can be the laggard glue groove of matched moulds away from the excessive glue-line gap of formation between the top side wall in described glue edge forming chamber 440 and described front cavity 200, can reduce the structure complexity of mould like this, make mould be easy to manufacture, the depth bounds of this excessive glue-line gap is preferably 0.01-0.03mm.
In a preferred embodiment, the depth bounds that enters glue passage 450 is 0.02-0.05mm, that is: after matched moulds, the top of sidewall 411 and the difference in height between front cavity are 0.02-0.05mm, this enters glue channel depth and can guarantee to enter to water smoothly, meanwhile, and after solidifying, silica gel edge and enter sizing material between glue groove can natural separation, reduce subsequent treatment process.
In a preferred embodiment, in matrix holddown groove, be provided with matrix detent mechanism, for locating the position of matrix in matrix holddown groove, this matrix detent mechanism can but to be not limited to be locating dowel, for example: mobile phone screen glass itself has receiver hole, the locating dowel corresponding with this receiver hole so can be set as matrix detent mechanism.
Above content is in conjunction with concrete preferred embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For those skilled in the art, without departing from the inventive concept of the premise, can also make some being equal to substitute or obvious modification, and performance or purposes identical, all should be considered as belonging to protection scope of the present invention.
Claims (6)
1. a liquid-state silicon gel injection mold, forms silica gel edge structure for the side injection moulding at matrix, comprises front template, is fixed on front cavity, rear pattern plate in described front template, is fixed on the rear cavity in described rear pattern plate and enters to water cover, it is characterized in that:
Described rear cavity be provided with matrix holddown groove, with described in enter to water that cover is communicated with enters glue groove and Yi Jiao district;
Described matrix holddown groove is used for fixing described matrix, and fixes also and between the side of described matrix and the sidewall of described matrix holddown groove, form glue edge forming chamber after matched moulds at described matrix;
Describedly enter glue groove along the sidewall setting of described matrix holddown groove, and after matched moulds, between the top side wall of described matrix holddown groove and described front cavity, form described in being communicated with, enter glue groove and described glue edge forming chamber enter glue passage;
Described Yi Jiao district along described in enter glue groove away from a side setting in described glue edge forming chamber, and by overflow glue passage with described in enter glue groove and be communicated with;
Describedly enter the bottom of glue passage lower than the bottom of described excessive glue passage.
2. liquid-state silicon gel injection mold according to claim 1, is characterized in that: described in enter glue passage depth bounds be 0.02-0.05mm.
3. liquid-state silicon gel injection mold according to claim 1 and 2, is characterized in that: described excessive glue passage is to enter glue groove described in after matched moulds away from the excessive glue-line gap forming between the top side wall in described glue edge forming chamber and described front cavity.
4. liquid-state silicon gel injection mold according to claim 3, is characterized in that: the depth bounds of described excessive glue-line gap is 0.01-0.03mm.
5. liquid-state silicon gel injection mold according to claim 1 and 2, is characterized in that: in described matrix holddown groove, be provided with matrix detent mechanism, for locating the position of described matrix in described matrix holddown groove.
6. liquid-state silicon gel injection mold according to claim 1 and 2, it is characterized in that: described glue edge forming chamber is the annular chamber around described matrix, describedly enter to water the cannelure of groove for arranging around described glue edge forming chamber, described in to enter glue passage be the circular passage that extends to the sidewall of whole described matrix holddown groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410277625.2A CN104085083B (en) | 2014-06-19 | 2014-06-19 | A kind of liquid-state silicon gel injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410277625.2A CN104085083B (en) | 2014-06-19 | 2014-06-19 | A kind of liquid-state silicon gel injection mold |
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| Publication Number | Publication Date |
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| CN104085083A true CN104085083A (en) | 2014-10-08 |
| CN104085083B CN104085083B (en) | 2016-09-07 |
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| CN201410277625.2A Active CN104085083B (en) | 2014-06-19 | 2014-06-19 | A kind of liquid-state silicon gel injection mold |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105899028A (en) * | 2016-07-01 | 2016-08-24 | 东莞万德电子制品有限公司 | Precision waterproof part with ultra-thin circuit board and die and process for forming part |
| CN106166823A (en) * | 2016-06-30 | 2016-11-30 | 广东亿达汽车密封件有限公司 | Rubber injection slim enter sealing rubber die |
| CN109193836A (en) * | 2018-09-14 | 2019-01-11 | 昆山万利康橡塑制品有限公司 | A kind of wireless charger upper cover of anti-flash |
| JP2021126895A (en) * | 2020-02-11 | 2021-09-02 | コンクラフト ホールディング コーポレーション エルティーデーConcraft Holding Co., Ltd. | Frame with an outer silicone-rubber layer and manufacturing method of forming silicone-rubber layer on outer part of frame |
| CN113363791A (en) * | 2020-03-05 | 2021-09-07 | 昆山康龙电子科技有限公司 | Frame body with silica gel layer outside and manufacturing method for forming silica gel layer outside frame body |
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| WO2010083027A1 (en) * | 2009-01-15 | 2010-07-22 | Pilkington Group Limited | Dynamic seal for molding process and method of using |
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| CN102259411A (en) * | 2011-06-24 | 2011-11-30 | 阳恒 | Molds capable of overcoming molding defects of simplicity in shrinkage, difficulty in cement saturation and air exhaust and the like |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106166823A (en) * | 2016-06-30 | 2016-11-30 | 广东亿达汽车密封件有限公司 | Rubber injection slim enter sealing rubber die |
| CN106166823B (en) * | 2016-06-30 | 2018-11-16 | 广东亿达汽车密封件股份有限公司 | Rubber injection it is slim enter sealing rubber die |
| CN105899028A (en) * | 2016-07-01 | 2016-08-24 | 东莞万德电子制品有限公司 | Precision waterproof part with ultra-thin circuit board and die and process for forming part |
| CN105899028B (en) * | 2016-07-01 | 2021-11-23 | 东莞万德电子制品有限公司 | Precise waterproof part with ultrathin circuit board and die and process for forming part |
| CN109193836A (en) * | 2018-09-14 | 2019-01-11 | 昆山万利康橡塑制品有限公司 | A kind of wireless charger upper cover of anti-flash |
| JP2021126895A (en) * | 2020-02-11 | 2021-09-02 | コンクラフト ホールディング コーポレーション エルティーデーConcraft Holding Co., Ltd. | Frame with an outer silicone-rubber layer and manufacturing method of forming silicone-rubber layer on outer part of frame |
| JP7064101B2 (en) | 2020-02-11 | 2022-05-10 | 華龍國際科技股▲ふん▼有限公司 | Manufacturing method to form a silicon rubber layer on the outside of the frame |
| CN113363791A (en) * | 2020-03-05 | 2021-09-07 | 昆山康龙电子科技有限公司 | Frame body with silica gel layer outside and manufacturing method for forming silica gel layer outside frame body |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104085083B (en) | 2016-09-07 |
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Address after: 523878 Changan City, Guangdong Province town on the corner management area Co-patentee after: Dongguan Huaqing Optical Technology Co., Ltd. Patentee after: Guangdong wins smart group Limited by Share Ltd Address before: 523878 Changan City, Guangdong Province town on the corner management area Co-patentee before: Dongguan Huaqing Optical Technology Co., Ltd. Patentee before: Dongguan Janus Precision Components Co., Ltd. |
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Effective date of registration: 20200716 Address after: 523000, Guangdong, Dongguan province Changan Town, South District Industrial Zone Patentee after: DONGGUAN HUAQING OPTICAL TECHNOLOGY Co.,Ltd. Address before: 523878 Changan City, Guangdong Province town on the corner management area Co-patentee before: DONGGUAN HUAQING OPTICAL TECHNOLOGY Co.,Ltd. Patentee before: GUANGDONG JANUS INTELLIGENT GROUP Corp.,Ltd. |
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