CN106003541A - 一种聚甲基丙烯酸甲酯灯罩生产工艺 - Google Patents
一种聚甲基丙烯酸甲酯灯罩生产工艺 Download PDFInfo
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- CN106003541A CN106003541A CN201610415002.6A CN201610415002A CN106003541A CN 106003541 A CN106003541 A CN 106003541A CN 201610415002 A CN201610415002 A CN 201610415002A CN 106003541 A CN106003541 A CN 106003541A
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- 239000004926 polymethyl methacrylate Substances 0.000 title claims abstract description 48
- 229920003229 poly(methyl methacrylate) Polymers 0.000 title claims abstract description 44
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000001035 drying Methods 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 238000004513 sizing Methods 0.000 claims abstract description 3
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 238000005516 engineering process Methods 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 9
- 230000004927 fusion Effects 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 150000004702 methyl esters Chemical class 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000002834 transmittance Methods 0.000 abstract description 3
- 238000001746 injection moulding Methods 0.000 abstract 1
- 239000003595 mist Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 6
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920005479 Lucite® Polymers 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 230000000930 thermomechanical effect Effects 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
-
- 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
- B29C45/76—Measuring, controlling or regulating
-
- 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
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
-
- 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
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- 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
- B29C2045/0096—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor drying the moulding material before injection, e.g. by heating
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76498—Pressure
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76531—Temperature
-
- 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
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76551—Time
- B29C2945/76561—Time duration
-
- 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
- B29K2033/00—Use of polymers of unsaturated acids or derivatives thereof as moulding material
- B29K2033/04—Polymers of esters
- B29K2033/12—Polymers of methacrylic acid esters, e.g. PMMA, i.e. polymethylmethacrylate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/747—Lightning equipment
- B29L2031/7472—Lampshades
Abstract
本申请公开了一种聚甲基丙烯酸甲酯灯罩生产工艺，包括选取原料，烘干原料，塑化熔融原料，注射成型，冷却定型和开模取出成品等步骤，通过在各个步骤中设置温度和时间参数，配合各步骤的装置，从而缩短成型周期，加快聚甲基丙烯酸甲酯灯罩成品产出，减少气泡、水纹或雾状等不良现象，提高聚甲基丙烯酸甲酯灯罩灯罩的透明度，透光率提高至94％以上。
Description
技术领域
本申请属于灯罩生产工艺技术领域，具体地说，涉及一种聚甲基丙烯酸甲酯灯罩生产工艺。
背景技术
聚甲基丙烯酸甲酯，俗称有机玻璃、亚克力，具有较好的透明性、化学稳定性和耐候性、易染色、易加工、外观优美，故广泛应用于灯饰中，然而聚甲基丙烯酸甲酯具有较明显的吸湿性，在注塑前必须干燥，干燥时耗费的时间长，耗能高；在塑化和注射阶段的时间长，使得原料易热降解，从而使得原料的粘度降低，同时冷却速度较慢，导致原料部分结晶，使得产出成品会有气泡、水纹或雾状等不良形态。
发明内容
针对现有技术中的不足，本发明的目的是提供一种聚甲基丙烯酸甲酯灯罩生产工艺。
为了解决上述技术问题，本申请揭示了一种聚甲基丙烯酸甲酯灯罩生产工艺，包括以下步骤：
选取粘度为0.79dL/～0.83dL/g聚甲基丙烯酸甲酯原料颗粒；
烘干聚甲基丙烯酸甲酯原料颗粒，烘干温度为60℃～80℃，烘干时间为3小时；
塑化熔融聚甲基丙烯酸甲酯原料颗粒，形成聚甲基丙烯酸甲酯流体，塑化温度为230℃；
注射聚甲基丙烯酸甲酯流体进入模具，注射速度为15g/s；
冷却模具至80℃，聚甲基丙烯酸甲酯流体定型形成聚甲基丙烯酸甲酯成品，每克聚甲基丙烯酸甲酯成品冷却时间为0.1秒；及
开模，机械手取出聚甲基丙烯酸甲酯成品。
根据本申请的一实施方式，注射聚甲基丙烯酸甲酯流体进入模具进行保压，保压压力为30巴，保压时间为1秒。
本发明的聚甲基丙烯酸甲酯灯罩生产工艺可缩短成型周期，减少气泡、水纹或雾状等不良现象，提高聚甲基丙烯酸甲酯灯罩灯罩的透明度，透光率提高至94％以上。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1为本发明的聚甲基丙烯酸甲酯灯罩生产工艺的流程图。
具体实施方式
以下将以图式揭露本申请的多个实施方式，为明确说明起见，许多实物上的细节将在以下叙述中一并说明。然而，应了解到，这些实物上的细节不应用以限制本申请。也就是说，在本申请的部分实施方式中，这些实务上的细节是非必要的。此外，为简化图式起见，一些习知惯用的结构与组件在图式中将以简单的示意的方式绘示之。
本申请提供一种聚甲基丙烯酸甲酯灯罩生产工艺，请参阅图1，图1为聚甲基丙烯酸甲酯灯罩生产工艺的流程图。如图1所示，执行步骤S1，对聚甲基丙烯酸甲酯原料进行检测，选取粘度为0.79dL/g～0.83dL/g的聚甲基丙烯酸甲酯原料颗粒。接着执行步骤S2，将符合粘度标准的聚甲基丙烯酸甲酯颗粒原料置于加热保温装置中烘干干燥，其中加热保温装置包括支架、加热元件及保温桶，保温桶设置于支架，加热元件设置于保温桶。保温桶具有桶底及桶身，桶底设置于支架，桶身设置于桶底。其中桶身包括外保温层及内保温层，加热元件设置于外保温层及内保温层间，通过加热保温装置中烘干聚甲基丙烯酸甲酯原料颗粒，设置烘干温度为60℃～80℃，烘干时间为3小时，使得聚甲基丙烯酸甲酯原料颗粒的含水率由0.3％-0.4％降至0.001％-0.004％。加热烘干后，执行步骤S3，将烘干的聚甲基丙烯酸甲酯原料颗粒注入注塑机中进行塑化熔融。注塑机采用无螺杆拉伸流变技术，即本注塑机的机身不含螺杆，通过设计成两级注塑系统，第一级的功能为塑化挤出和输料功能，第二级为计量和注射功能，相对于传统的采用螺杆挤出的注塑机的机身体积较小，原料的热机械历程相比螺杆挤出的注塑机要缩短50％以上。设置注塑机的塑化温度为230℃，将聚甲基丙烯酸甲酯原料颗粒熔融成聚甲基丙烯酸甲酯流体。在塑化的同时执行步骤S4，注射聚甲基丙烯酸甲酯流体进入模具中，由注射油缸推动注射活塞将熔融聚甲基丙烯酸甲酯以每秒每腔15g的速度注入到模具，注射的完毕后，执行步骤S5，对注塑后的模具进行保压，保压压力为30巴，保压时间为1秒。保压完成后，执行步骤S6，通过冷水机对模具进行冷却，模具的成型腔内的零件配合位置采用特殊表面处理技术，同时模具采用三轴冷却系统，提高了冷却时的热传导效率，每克聚甲基丙烯酸甲酯成品的冷却时间只需0.1秒，冷却速度快，可在短时间内将模具由230℃降至80℃。根据灯罩成品的重量设置冷却时间，冷却结束后，执行步骤S7，开模，通过机械手取出聚甲基丙烯酸甲酯成品。
综上所述，本申请的一或多个实施例中，聚甲基丙烯酸甲酯原料颗粒的成型周期短，耗能减少，同时减少气泡、水纹或雾状等不良现象，提高聚甲基丙烯酸甲酯灯罩灯罩的透明度，透光率提高至94％以上。
上述说明示出并描述了本发明的若干优选实施例，但如前所述，应当理解本发明并非局限于本文所披露的形式，不应看作是对其他实施例的排除，而可用于各种其他组合、修改和环境，并能够在本文所述发明构想范围内，通过上述教导或相关领域的技术或知识进行改动。而本领域人员所进行的改动和变化不脱离本发明的精神和范围，则都应在本发明所附权利要求的保护范围。
Claims (2)
1.一种聚甲基丙烯酸甲酯灯罩生产工艺，其特征在于，包括以下步骤：
选取粘度为0.79dL/g～0.83dL/g聚甲基丙烯酸甲酯原料颗粒；
烘干所述聚甲基丙烯酸甲酯原料颗粒，烘干温度为60℃～80℃，烘干时间为3小时；
塑化熔融所述聚甲基丙烯酸甲酯原料颗粒，形成聚甲基丙烯酸甲酯流体，塑化温度为230℃；
注射所述聚甲基丙烯酸甲酯流体进入模具，注射速度为15g/s；
冷却所述模具至80℃，所述聚甲基丙烯酸甲酯流体定型形成聚甲基丙烯酸甲酯成品，每克所述聚甲基丙烯酸甲酯成品冷却时间为0.1秒；及
开模，机械手取出所述聚甲基丙烯酸甲酯成品。
2.如权利要求1所述的聚甲基丙烯酸甲酯灯罩生产工艺，其特征在于，注射所述聚甲基丙烯酸甲酯流体进入模具进行保压，保压压力为30巴，保压时间为1秒。
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214906A (zh) * | 2017-05-25 | 2017-09-29 | 湖州泰和汽车零部件有限公司 | 一种汽车标牌注塑方法 |
| CN108789924A (zh) * | 2018-05-02 | 2018-11-13 | 芜湖众梦电子科技有限公司 | 一种用于灯饰外壳的注胶成型方法 |
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| CN104566190A (zh) * | 2014-11-25 | 2015-04-29 | 苏州新区佳合塑胶有限公司 | 一种汽车刹车灯灯罩制备方法 |
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- 2016-06-14 CN CN201610415002.6A patent/CN106003541A/zh active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104566190A (zh) * | 2014-11-25 | 2015-04-29 | 苏州新区佳合塑胶有限公司 | 一种汽车刹车灯灯罩制备方法 |
Non-Patent Citations (1)
| Title |
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| 中国机械工业年鉴编辑委员会，中国塑料机械工业协会: "《中国塑料机械工业年鉴》", 30 April 2011, 机械工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214906A (zh) * | 2017-05-25 | 2017-09-29 | 湖州泰和汽车零部件有限公司 | 一种汽车标牌注塑方法 |
| CN108789924A (zh) * | 2018-05-02 | 2018-11-13 | 芜湖众梦电子科技有限公司 | 一种用于灯饰外壳的注胶成型方法 |
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