CN101571462B - Sample mould for predicting heat sealing performance of modified plastics - Google Patents
Sample mould for predicting heat sealing performance of modified plastics Download PDFInfo
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- CN101571462B CN101571462B CN2009100270137A CN200910027013A CN101571462B CN 101571462 B CN101571462 B CN 101571462B CN 2009100270137 A CN2009100270137 A CN 2009100270137A CN 200910027013 A CN200910027013 A CN 200910027013A CN 101571462 B CN101571462 B CN 101571462B
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Abstract
The invention provides a sample mould for predicting heat sealing performance of modified plastics, which comprises a static template, a die cavity plate and a dynamic template, wherein the die cavityplate is provided with die cavities for molding standard tensile samples, pouring gates communicated with the die cavities and subchannels communicated with the pouring gate; the die cavity plate is provided with three die cavities which have completely consistent shapes; two of the die cavities are arranged in parallel along the horizontal direction, and one end of each of the two die cavities in the horizontal direction is provided with the pouring gates; the other die cavity is arranged along the vertical direction and is arranged beside the two die cavities in the horizontal direction, and two ends of the die cavity in the vertical direction are provided with the pouring gates; and the pouring gate at the upper end of the die cavity in the vertical direction is opposite to the pouringgate of one die cavity in the horizontal direction, and the pouring gate at the lower end of the die cavity in the vertical direction is opposite to the pouring gate of the other die cavity in the ho rizontal direction. Through one-step injection molding, the tensile sample with a weld mark and the tensile sample without the weld mark can be obtained at the same time, and the comparison of tensiledata of the two different samples can show the influence of the weld mark on material properties.
Description
Technical field
The present invention relates to a kind of mould, relate in particular to a kind of injection mold that can predict heat sealing performance of modified plastics.
Background technology
When the injection mo(u)lding thermoplastic articles, usually in some cases, because the structural factor of the mould relevant with the goods design, the phenomenon that moulded products produces weld mark almost is difficult to avoid fully.The reason that produces weld mark be since in the mold filling process from the melt flows leading peak of different directions, due to meet fails to merge fully.The existence of weld mark (weld bond or face of weld) not only influences the presentation quality of goods, what is more important, thereby weld mark can become the mechanical strength that stress concentration point influences goods, when goods needed secondary processing (as application, plating), the influence of chemical-resistant aspect also can manifest to some extent.For fear of the many product quality problems that produce because of weld mark, after product machine-shaping, must carry out the test of weld mark aspect to preproduction, check whether goods have weld mark, differentiate size, and according to circumstances find the method for dealing with problems because of in various degree the product quality problem that weld mark caused.
The intensity in molding product weld marks zone, chemical-resistant and apparent property are influenced by Several Factors such as material selection, goods design, mould design and goods processing conditions.
The heat seal strength retention of comparative material tensile sample (ratio that its pulling strengrth of sample of the sample of weld bond and weldless line is promptly arranged) is for the welding performance of prediction modified plastics, and optimal design is material modified to have certain value.The pulling strengrth sample that weld bond is wherein arranged, the sample mould of can be simply offering cast gate with two ends is made, and the pulling strengrth sample of weldless line can adopt single cast gate sample mould of normally used standard to make.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, a kind of sample mould that can predict heat sealing performance of modified plastics is provided.
The present invention is achieved through the following technical solutions:
A kind of sample mould that is used to predict heat sealing performance of modified plastics, comprise quiet template, cavity plate and moving platen, the runner that cavity plate is provided with the die cavity that is used for the molding standard tensile sample, the cast gate that is connected with die cavity and is connected with cast gate, characteristics are: described cavity plate is provided with 3 die cavities, and the physical dimension of 3 die cavities is in full accord; Wherein two die cavity along continuous straight runs are parallel and arrange side by side, and an end of two die cavities of described horizontal direction is provided with cast gate; Another die cavity is vertically arranged, is arranged on the side of two die cavities of horizontal direction, and the two ends of described vertical direction die cavity all are provided with cast gate; The upper end cast gate of vertical direction die cavity is relative with the cast gate of horizontal direction one die cavity, the lower end cast gate of vertical direction die cavity is relative with the cast gate of another die cavity of horizontal direction, and the cast gate at described vertical direction die cavity two ends and the cast gate of two die cavities of horizontal direction all are connected with runner.
Further, above-mentioned a kind of sample mould that is used to predict heat sealing performance of modified plastics, wherein, described runner is T-shaped.
Substantive distinguishing features and obvious improvement that technical solution of the present invention is outstanding are mainly reflected in:
The tensile sample mould of double teeming mouth charging and the tensile sample mould integrated optimization design back of single cast gate charging are realized on same cavity plate mould, single injection-molded can obtain the tensile sample of two types of weld mark and weldless traces simultaneously, by tension test, the stretching data that compare two kinds of various sample, can show that weld mark is to effect of material performance, and calculate the heat seal strength retention of moulding material, thereby prediction experiment is with the welding performance of moulding material, for material modified optimized design provides the path.
Description of drawings
Below in conjunction with accompanying drawing technical solution of the present invention is described further:
Fig. 1: the structural representation of cavity plate of the present invention.
The implication of each Reference numeral among the figure:
The 1-cavity plate, 2-die cavity, 3-cast gate, 4-runner.
Embodiment
Be used to predict the sample mould of heat sealing performance of modified plastics, be ordinary injection die, mainly comprise quiet template, cavity plate and moving platen, as shown in Figure 1, on cavity plate 1, be provided with the die cavity 2 that is used for the molding standard tensile sample, the cast gate 3 that is connected with die cavity and the runner 4 that is connected with cast gate 3; Cavity plate 1 is provided with 3 die cavities, and the physical dimension of 3 die cavities is in full accord; Wherein two die cavity along continuous straight runs are parallel and arrange side by side, and an end of two die cavities of horizontal direction is provided with cast gate, and each die cavity of horizontal direction adopts single cast gate charging.Another die cavity is vertically arranged, is arranged on the side of two die cavities of horizontal direction, and the two ends of vertical direction die cavity all are provided with cast gate, and the vertical direction die cavity adopts the charging of double teeming mouth.The upper end cast gate of vertical direction die cavity is relative with the cast gate of horizontal direction one die cavity, the lower end cast gate of vertical direction die cavity is relative with the cast gate of another die cavity of horizontal direction, the cast gate of the cast gate at vertical direction die cavity two ends and two die cavities of horizontal direction all is connected with runner 4, and runner 4 is T-shaped.
In the above-mentioned mould structure, the die cavity number is 3, and physical dimension is in full accord.Wherein two die cavities are arranged in horizontal direction and are parallel to each other, and each die cavity adopts single cast gate charging, to obtain the sample finished product of weldless trace.In a side of two parallel die cavities, the die cavity that design has vertical direction to arrange, the two ends of die cavity all are provided with cast gate, and purpose is to observe consequent weld mark according to the material modified situation of advancing to water the back in the fusion of the middle part of mold cavity of fusion.On same cavity plate, by the cast gate design proposal, can form two kinds of samples of weld mark and weldless trace, thereby be carried out performance relatively, for material design provides foundation.The design of runner is satisfied the Runner Balance principle to the generation and the directly influence of strong and weak nothing of weld mark.
The present invention realizes the tensile sample mould integrated optimization design back that two ends are provided with the tensile sample mould of charging cast gate and single cast gate charging on same cavity plate mould, single injection-molded can obtain the tensile sample of two types of weld mark and weldless traces simultaneously.By tension test, relatively the tensile property data of two kinds of various sample can show weld mark to effect of material performance, and calculate the heat seal strength retention of moulding material, thereby prediction experiment is with the welding performance of moulding material, for material modified optimized design provides the path.
This mold system also includes sprue bush, and sprue bush can pass the centre of the runner of quiet template on the cavity plate.Sprue bush is provided with main cast gate and the sprue that is connected with main cast gate, and sprue is connected with runner on the cavity plate, and the diameter of sprue is not less than 4mm.Mould structure is provided with liftout attachment, comprise that the integral body that matches with die cavity 2 ejects core, core is located on the liftout plate, holds and props up liftout plate and a fore-set passes moving platen, ejects core forward by liftout plate again and sample is ejected, the core and the cavity dimension that eject usefulness are in full accord, to be ejected face stressed evenly whole to make sample, be easy to eject, and the surface that sample is ejected do not have any vestige that ejects, the flatness of specimen surface is good, the sample mass height.
Need to prove, the mould structure that the present invention relates to, provide a kind of design proposal that can predict heat sealing performance of modified plastics, the die cavity quantity and distribution, the type of test sample and the material that sample adopted that relate in the mold system design can be set according to actual request for utilization.
In sum, the present invention designs uniqueness, novel structure, the double teeming oral examination original mold tool integrated optimization design back of traditional single cast gate sample mould and two endfeeds is realized on same cavity plate mould, under equal process conditions, the test batten that one-shot forming is two types, be convenient to the influence degree of analysis of material factor, thereby provide a useful approach for the component and the consumption of appropriate design modified plastics the sample heat seal strength.
As mentioned before, require emphasis and understand be: above-mentioned explanation is not to be limitation of the present invention, and in the present invention conceived scope, the interpolation of being carried out, conversion, replacement etc. also should belong to protection scope of the present invention.
Claims (2)
1. sample mould that is used to predict heat sealing performance of modified plastics, comprise quiet template, cavity plate and moving platen, the runner that cavity plate is provided with the die cavity that is used for the molding standard tensile sample, the cast gate that is connected with die cavity and is connected with cast gate, it is characterized in that: described cavity plate is provided with 3 die cavities, and the physical dimension of 3 die cavities is in full accord; Wherein two die cavity along continuous straight runs are parallel and arrange side by side, and an end of two die cavities of described horizontal direction is provided with cast gate; Another die cavity is vertically arranged, is arranged on the side of two die cavities of horizontal direction, and the two ends of described vertical direction die cavity all are provided with cast gate; The upper end cast gate of vertical direction die cavity is relative with the cast gate of horizontal direction one die cavity, the lower end cast gate of vertical direction die cavity is relative with the cast gate of another die cavity of horizontal direction, and the cast gate at described vertical direction die cavity two ends and the cast gate of two die cavities of horizontal direction all are connected with runner.
2. a kind of sample mould that is used to predict heat sealing performance of modified plastics according to claim 1, it is characterized in that: described runner is T-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100270137A CN101571462B (en) | 2009-05-22 | 2009-05-22 | Sample mould for predicting heat sealing performance of modified plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100270137A CN101571462B (en) | 2009-05-22 | 2009-05-22 | Sample mould for predicting heat sealing performance of modified plastics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101571462A CN101571462A (en) | 2009-11-04 |
| CN101571462B true CN101571462B (en) | 2011-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100270137A Expired - Fee Related CN101571462B (en) | 2009-05-22 | 2009-05-22 | Sample mould for predicting heat sealing performance of modified plastics |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006995B (en) * | 2014-05-29 | 2016-09-28 | 扬州大学 | Shaping method of specimen starched only by fiber for scanning microscopy environment |
| CN104458381A (en) * | 2014-12-17 | 2015-03-25 | 苏州禾昌聚合材料股份有限公司 | Sample-band mold for testing modified plastics |
| CN105973668A (en) * | 2016-06-07 | 2016-09-28 | 苏州禾昌聚合材料股份有限公司 | Novel sample bar mold for modified material testing |
| CN108225865A (en) * | 2018-01-19 | 2018-06-29 | 扬州大学 | A kind of test specimen production method of the fixed cement concrete tension test for the bundle fiber that is chopped |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1493448A (en) * | 2003-08-14 | 2004-05-05 | 海尔集团公司 | Moule capabld of eliminating external welding veslige of injection moulding pored product and its use method |
| EP1229082B1 (en) * | 2001-01-31 | 2007-09-05 | Toyoda Gosei Co., Ltd. | Resin molding having a weld |
| CN201421414Y (en) * | 2009-05-22 | 2010-03-10 | 苏州禾盛新型材料股份有限公司 | Sample die used for predicting modified plastic welding performance |
-
2009
- 2009-05-22 CN CN2009100270137A patent/CN101571462B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1229082B1 (en) * | 2001-01-31 | 2007-09-05 | Toyoda Gosei Co., Ltd. | Resin molding having a weld |
| CN1493448A (en) * | 2003-08-14 | 2004-05-05 | 海尔集团公司 | Moule capabld of eliminating external welding veslige of injection moulding pored product and its use method |
| CN201421414Y (en) * | 2009-05-22 | 2010-03-10 | 苏州禾盛新型材料股份有限公司 | Sample die used for predicting modified plastic welding performance |
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| CN101571462A (en) | 2009-11-04 |
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Granted publication date: 20110427 Termination date: 20130522 |