CN102601913A - Production mould for cross-linked foaming bar material - Google Patents
Production mould for cross-linked foaming bar material Download PDFInfo
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- CN102601913A CN102601913A CN2012101145174A CN201210114517A CN102601913A CN 102601913 A CN102601913 A CN 102601913A CN 2012101145174 A CN2012101145174 A CN 2012101145174A CN 201210114517 A CN201210114517 A CN 201210114517A CN 102601913 A CN102601913 A CN 102601913A
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- mould
- template
- groove
- foaming bar
- crosslinked foaming
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Abstract
The invention relates to a curing mould. In order to overcome defects existing in the process of producing a cross-linked foaming bar material by using the traditional mould, the invention provides a production mould for a cross-linked foaming bar material, comprising an upper mould plate and a lower mould plate which are consistent in shape; the inner surfaces of the upper mould plate and the lower mould plate are both uniformly provided with a plurality of parallel semicircular grooves; and after the upper mould plate and the lower mould plate are buckled together, the corresponding semicircular grooves of the upper mould plate and the lower mould plate form a cross-linked foaming bar material mould cavity. The production mould for the cross-linked foaming bar material is characterized in that the depths of the semicircular grooves in the mould plates are gradually increased from the central regions of the mould plates to the circumferences, the depths of the grooves at the four corners of each mould plate are the maximum, and the difference between the depths of the grooves at the four corners of the mould plates and the depths of the grooves at the central regions of the mould plates is 1.5-2.5mm. The production mould of the cross-linked foaming bar material is reasonable in structure, good in quality of a produced cross-linked foaming bar material product, low in material and labor consumption, capable of effectively reducing production cost and wide in application prospect.
Description
Technical field
The present invention relates to a kind of sulfurizing mould, specifically be meant a kind of mould that utilizes vulcanizing press the crosslinked foaming material to be produced bar.
Background technology
The crosslinked foaming material is through obtaining the crosslinked foaming material behind the crosslinked foaming in banburying, thin logical, pulling-on piece, the vulcanizer with main plastic material such as the NR of EVA, LDPE, HDPE, POE, EPDM and modification, SBR, NBR, BR and filler+blowing agent+crosslinking agent+auxiliary agent.Usually the vulcanizing equipment that adopts is a vulcanizing press, and the crosslinked foaming material that obtains after the sulfuration is a sheet material.Club-shaped material then is with the band cutter sheet material to be cut into rectangular bar shaped if desired, and rectangular bar shaped sheet material is polished into the cylinder barred body.We can know when producing bar and can produce a large amount of waste materials to adopt this method, cause the increase of raw-material waste and bar production cost.
The Chinese patent of ZL200720090386.5 discloses a kind of mould of making crosslinked foaming pipe, bar; This mould comprises upper die and lower die; Upper die and lower die are separately fixed on the heating plate up and down of vulcanizing press; Evenly be furnished with semi-circular recesses on the inner surface of upper die and lower die, after upper die and lower die snapped together, its corresponding each other separately semi-circular recesses formed crosslinked foaming bar forming tank.The technical problem that the wastage of material that adopts this mould can overcome traditional crosslinked foaming bar production mode to exist, cost increase.But when on vulcanizer, using this mould, need to pass through the material that the pulling-on piece step obtains and pulverize, use the extruder extruding pelletization, then the foamed plastic grain of gained is carried out crosslinked foaming with injector injection die cavity and just can obtain qualified bar with pulverizer.So cause the technical problem that production equipment increases, production stage is loaded down with trivial details, production cost increases indirectly.Once attempt adopting this mould directly will pass through sheeting that the pulling-on piece step obtains in process of production overlays up and down and vulcanizes through heating, pressurization between the mould; But the diameter of rod that obtains is inhomogeneous; On the same bar, the diameter of rod of middle part is maximum, and it is more and more littler to extend diameter by the centre to the bar two ends; The bar that finally obtains is the spindle shape, does not reach the index request of bar production at all.
Summary of the invention
For overcome the drawback that equipment increases, cost is too high or the bar shape is not up to standard that existing mold exists in producing crosslinked foaming bar process, the present invention provides a kind of crosslinked foaming bar that can thoroughly solve the problems of the technologies described above to make mould.
The technical scheme that the present invention adopts is: crosslinked foaming bar production mould; Comprise cope match-plate pattern and lower bolster; Cope match-plate pattern, lower bolster shape unanimity evenly are furnished with some parallel semi-circular recesses, after cope match-plate pattern and lower bolster snap together on the inner surface of cope match-plate pattern and lower bolster; Its corresponding each other separately semi-circular recesses forms crosslinked foaming bar die cavity; It is characterized in that: the degree of depth of the semicircle groove on the said template is deepened around it by the template center zone gradually, and is maximum with the depth of groove at four jiaos of places of template, and the depth of groove difference in the depth of groove at this place and template center zone is 1.5-2.5mm.
The depth of groove difference in the depth of groove at four jiaos of places of described template and template center zone is 2mm.
Described template center zone, its area accounts for the 1/4-1/3 of template upper groove area occupied.
Described template surface and groove inner surface are provided with iron Buddhist dragon coating.
The thickness of described iron Buddhist dragon coating is at 0.03-0.05mm.
The semi-circular recesses length of described template surface is 1-4m.
The diameter of the semicircle groove of described template surface is 12.5-30mm.
Described template is provided with at its edge and installs and fixes piece.
Beneficial effect of the present invention is: use this crosslinked foaming bar production mould to carry out crosslinked foaming with passing through central area heating, the pressurization that sheeting that the pulling-on piece step obtains directly overlays between the bolster; Material web becomes the liquid state under the heat state, directly obtain the crosslinked foaming bar thereby raw material is mobile between two templates to fill up die cavity.Because the degree of depth of the semicircle groove on this template is deepened around it by the template center zone gradually; It is deepened curve and can guarantee through accurate calculating to be full of liquid in the die cavity of template edge; Guarantee the uniformity of the diameter of rod of processing, can not obtain enough raw material fillings and cause bar specification technical problem not up to standard thereby overcome in original mould the far-end die cavity.This crosslinked foaming bar production mould structure is reasonable, the crosslinked foaming bar good product quality of production, and material, manpower consumption are few, can effectively reduce production costs, and are with a wide range of applications.
Description of drawings
Accompanying drawing 1 is the wherein structural representation of a template of this mould.
Accompanying drawing 2 be in the accompanying drawing 1 D-D to cutaway view.
Accompanying drawing 3 is to produce its template upper groove change in depth of bar of different-diameter to its vary in diameter influence curve figure.
Accompanying drawing 4 is to produce its template upper groove change in depth of bar of different length to its vary in diameter influence curve figure.
Among the figure, 1, template, 2, semi-circular recesses, 3, install and fix piece, 4, iron Buddhist dragon coating, I, central area.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Accompanying drawing shows the wherein structure of a template of mould, because the planform of bolster is consistent in this mould, therefore can know the configuration state of entire die through the structure of a template wherein.
As shown in Figure 1, template 1 selects for use No. 45 steel plates to process, and on template, mills out the semi-circular recesses 2 parallel like dried bar.After above-mentioned two templates were snapped together as cope match-plate pattern and lower bolster respectively, its corresponding each other separately semi-circular recesses 2 formed crosslinked foaming bar die cavitys.
The key of this mould is the variation of the template upper semi-circle connected in star degree of depth; As shown in Figure 1, the degree of depth of semicircle groove is deepened around it by template center's area I gradually, promptly the A in figure ,-A; B ,-the B direction deepens gradually, and the depth of groove at C place, four corners of template is maximum.
During concrete the application; The bolster of this mould is separately fixed on the heating plate up and down of vulcanizing press; As shown in Figure 1; Template is provided with at its edge and installs and fixes piece 3, and after the vulcanizer work, heating plate closes up the semi-circular recesses 2 formation crosslinked foaming bar die cavitys that drive mutual correspondence on the bolster up and down.
To template upper groove change in depth influencing us it carried out Test Summary to the diameter of rod of being produced.
The present invention changes its vary in diameter to the bar of producing different length, different-diameter with depth of groove and tests.
In this test; We obtain thin slice with ethene-vinyl acetate copolymer eva after through banburying, thin logical, pulling-on piece step as primary raw material and directly are put into and carry out crosslinked foaming in the vulcanizer; We are decided to be 2 with the coefficient of expansion of crosslinked foaming; Be die cavity length and diameter get the bar length of being produced and diameter respectively 1/2, for example production length 2m, diameter are the bar of 30mm, die cavity length is taken as 1m, diameter is got 15mm.
As shown in Figure 3, the figure shows when producing the different-diameter bar, its template upper groove change in depth is to the change curve that influences of diameter of rod.
According to this figure, resulting data see the following form:
Wherein: the depth difference of the depth of groove at C place and I place depth of groove on the template shown in the Hc-Hi presentation graphs 1.
D representes the diameter of bar.
The diameter at its C place on the template shown in Fig. 1 of bar product that Dc/Di representes finally to obtain in the die cavity among Fig. 3 and I place diameter ratio.
By finding out in this table, when the numerical value of Hc-Hi changed between 2.0-2.5mm, the value of its Dc/Di of bar of different-diameter maintained near 1 basically, and promptly the diameter of final products is consistent basically.
As shown in Figure 4, when the figure shows the bar of production length, its template upper groove change in depth is to the change curve that influences of diameter of rod.
Following table is promptly according to this figure, resulting data:
Wherein, L representes bar length.
By finding out in this table, when the numerical value of Hc-Hi changed between 1.5-3mm, the value of Dc/Di maintained near 1, and promptly the diameter of final products is consistent basically.
Through experiment; In conjunction with the curve map of Fig. 3, Fig. 4 and the numerical value of comprehensive above-mentioned two forms; When we can draw numerical value as Hc-Hi at 1.5-2.5mm; To the uniformity that keeps the final products diameter is relatively to be fit to, and wherein when the numerical value of Hc-Hi was 2mm, the product of different length, different-diameter can both be obtained outstanding representation.
Because employed slice raw material size accounts between the 1/4-1/3 of template upper groove area occupied basically; Therefore the 1/4-1/3 that gets the groove area occupied in template center is as the central area; The degree of depth of this zone inner groovy is consistent, and is deepened gradually to the depth of groove of extending all around by this zone.
For preventing that crosslinked foaming material and mold cavity from producing bonding; As shown in Figure 2, be provided with iron Buddhist dragon coating 4 at template surface and groove inner surface, Teflon high-performance special coating is to be the fluorine coating of matrix resin with the polytetrafluoroethylene (PTFE); It is a kind of unique high-performance coating; In conjunction with hear resistance, chemical inertness and excellent insulation stability and low frictional properties, have high, the lower coefficient of friction of viscosity not, good heat resistance, heat endurance and resistance to wear, corrosion resistant advantage, smear iron Buddhist dragon at template surface and groove inner surface and can prevent effectively that the crosslinked foaming material from dissolving the back and producing bonding with mold cavity; Also help simultaneously fully flowing of material; Can impel the raw material after dissolving to be full of die cavity fast, in actual production process, the thickness of iron Buddhist dragon coating is many between 0.03-0.05mm.
Adopt at present the bar length of this die production many at 1-4m, diameter between 25-60mm, so during the production template, the semi-circular recesses length of template surface can be selected between 12.5-30mm at the diameter of 1-2m, semicircle groove.
Claims (8)
1. crosslinked foaming bar production mould; Comprise cope match-plate pattern and lower bolster; Cope match-plate pattern, lower bolster shape unanimity evenly are furnished with some parallel semi-circular recesses, after cope match-plate pattern and lower bolster snap together on the inner surface of cope match-plate pattern and lower bolster; Its corresponding each other separately semi-circular recesses forms crosslinked foaming bar die cavity; It is characterized in that: the degree of depth of the semicircle groove on the said template is deepened around it by the template center zone gradually, and is maximum with the depth of groove at four jiaos of places of template, and the depth of groove difference in the depth of groove at this place and template center zone is 1.5-2.5mm.
2. crosslinked foaming bar production mould according to claim 1 is characterized in that: the depth of groove difference in the depth of groove at four jiaos of places of described template and template center zone is 2mm.
3. crosslinked foaming bar production mould according to claim 1 is characterized in that: described template center zone, its area accounts for the 1/4-1/3 of template upper groove area occupied.
4. crosslinked foaming bar production mould according to claim 1 is characterized in that: described template surface and groove inner surface are provided with iron Buddhist dragon coating.
5. crosslinked foaming bar production mould according to claim 4 is characterized in that: the thickness of described iron Buddhist dragon coating is at 0.03-0.05mm.
6. crosslinked foaming bar production mould according to claim 1 is characterized in that: the semi-circular recesses length of described template surface is 1-2m.
7. according to claim 1 or 6 described crosslinked foaming bar production moulds, it is characterized in that: the diameter of the semicircle groove of described template surface is 12.5-30mm.
8. crosslinked foaming bar production mould according to claim 1 is characterized in that: described template is provided with at its edge and installs and fixes piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210114517.4A CN102601913B (en) | 2012-04-19 | 2012-04-19 | Production mould for cross-linked foaming bar material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210114517.4A CN102601913B (en) | 2012-04-19 | 2012-04-19 | Production mould for cross-linked foaming bar material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102601913A true CN102601913A (en) | 2012-07-25 |
| CN102601913B CN102601913B (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210114517.4A Expired - Fee Related CN102601913B (en) | 2012-04-19 | 2012-04-19 | Production mould for cross-linked foaming bar material |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2122019U (en) * | 1991-07-20 | 1992-11-18 | 山东省机械进出口公司淄博合营工具厂 | Ripper shaping die set |
| CN201006628Y (en) * | 2007-05-18 | 2008-01-16 | 张大伟 | Mold for manufacturing crosslinked foam raising pipe or bar material |
| JP2008504159A (en) * | 2004-06-28 | 2008-02-14 | ザ エクス ワン カンパニー | Gas permeable mold |
| CN201456283U (en) * | 2009-05-04 | 2010-05-12 | 朱纪丰 | Spliced aluminum alloy mold with strip-shaped inverted groove structure |
| CN202727229U (en) * | 2012-04-19 | 2013-02-13 | 荣成市华冠乔宇橡塑有限公司 | Crosslinking foam bar material producing mould |
-
2012
- 2012-04-19 CN CN201210114517.4A patent/CN102601913B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2122019U (en) * | 1991-07-20 | 1992-11-18 | 山东省机械进出口公司淄博合营工具厂 | Ripper shaping die set |
| JP2008504159A (en) * | 2004-06-28 | 2008-02-14 | ザ エクス ワン カンパニー | Gas permeable mold |
| CN201006628Y (en) * | 2007-05-18 | 2008-01-16 | 张大伟 | Mold for manufacturing crosslinked foam raising pipe or bar material |
| CN201456283U (en) * | 2009-05-04 | 2010-05-12 | 朱纪丰 | Spliced aluminum alloy mold with strip-shaped inverted groove structure |
| CN202727229U (en) * | 2012-04-19 | 2013-02-13 | 荣成市华冠乔宇橡塑有限公司 | Crosslinking foam bar material producing mould |
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| Publication number | Publication date |
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| CN102601913B (en) | 2014-04-30 |
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