CN203650758U - Large-size peroxide vulcanized EPDM sealing ring machining and molding device - Google Patents
Large-size peroxide vulcanized EPDM sealing ring machining and molding device Download PDFInfo
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- CN203650758U CN203650758U CN201320884444.7U CN201320884444U CN203650758U CN 203650758 U CN203650758 U CN 203650758U CN 201320884444 U CN201320884444 U CN 201320884444U CN 203650758 U CN203650758 U CN 203650758U
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Abstract
The utility model discloses a large-size peroxide vulcanized EPDM sealing ring machining and molding device and belongs to the technical field of machining and molding of sealing rings. The large-size peroxide vulcanized EPDM sealing ring machining and molding device comprises an upper engine base, an upper base plate, a stand column, an upper transition plate, an upper mould, a lower mould, a lower transition plate, a lower base plate, a lower engine base, a hydraulic connection rod and a hydraulic cylinder, wherein the upper engine base and the lower engine base are connected by the stand column; the lower engine base is connected with the hydraulic cylinder by the hydraulic connection rod; the hydraulic cylinder pushes the lower engine base to do up-down reciprocating motion along the stand column; the upper mould and the lower mould are matched to form a sealing ring cavity; O-shaped edge tearing grooves are formed in 0.3-0.5mm parts of the two sides of the sealing ring cavity; the surface roughness of each O-shaped edge tearing groove is smaller than or equal to Ra3.2; the depth of each O-shaped edge tearing groove is 1/5 of the depth of the sealing ring cavity; residual rubber grooves are formed in the two ends of the lower mould. According to the large-size peroxide vulcanized EPDM sealing ring machining and molding device, a prepared EPDM sealing ring product has no macroscopic residual burrs in a subsequent reshaping process, the use requirements of the product are met and the production efficiency is high.
Description
Technical field
The utility model relates to sealing ring machine-shaping technical field, in particular, relates to a kind of large scale peroxide cure EPDM sealing ring machine-shaping device.
Background technology
After rubber sulfidization molding, will carry out overlap processing, the normal overlap processing method adopting has artificial deburring, freezing deburring, automatic edge demounting, machine cuts, polishing, grinding etc.It is postprocessing working procedures very consuming time together that rubber is carried out to overlap processing, has wasted a large amount of energy and labour.Also caused the production procedure of rubber to lengthen, goods overstock and percent defective rises.How to shorten the production procedure of rubber, reduce even this postprocessing working procedures of Processing for removing overlap, become the target that numerous rubber manufacturing enterprise is pursued always.
EPDM (EPDM) rubber seal is compared other common rubber seal and is had the good performance such as anti-aging.At present, start gradually at home to apply EPDM (EPDM) rubber seal in water supply piping system.EPDM (EPDM) rubber seal is used peroxide vulcanizing system preparation conventionally, and the advantage of peroxide cure EPDM system is: (1) has superior heat resistance and lower pressure becomes; (2) at high temperature curingprocess rate is fast, does not vulcanize anti-former phenomenon; (3) colour stability is good, does not pollute, most of peroxide no bloomings, and storage feels dangerous without burning; (4) formula is simple, also uses easily sulfuration from different high polymers.Its shortcoming is: under (1) low temperature, curingprocess rate is slow, therefore requires to have higher curing temperature; (2) physical and mechanical properties of vulcanized rubber (as stretched, tearing wearability etc.) is lower, and especially under high temperature, tear-resistant performance is poor.(3) most of peroxide frowziness, and may react with other compounding ingredients; (4) price is relatively high.Along with promoting the use of gradually of large scale peroxide cure EPDM sealing ring, the product order volume of its manufacturer also increases thereupon, but, because large scale peroxide cure EPDM sealing ring (as shown in Figure 2) appearance and size is large, section is that ellipse and width are narrow, the above-mentioned shortcoming existing due to peroxide cure EPDM system itself again, cause the follow-up deburring operation element of EPDM sealing ring amount very large, the normal manual deburring using, the method of the processing overlaps such as freezing deburring and automatic edge demounting all can not reach the requirement of high-performance EPDM sealing ring, also very easily there is the problem that deburring excessively directly causes EPDM sealing ring to be scrapped, the rising of percent defective has brought loss to manufacturer.
According to rubber tear failure theory, tearing of rubber is generally the approach development along resistance minimum, and the developing direction of breach is to select the weak route of internal structure to carry out.Torn edges groove is at a groove of the position of release chamber, mold parting surface place close together processing, after product, in road shaping process, plays torn edges effect.Usual torn edges groove is generally rhombus section (in conjunction with Fig. 4), the cusp that the stress point of rhombus torn edges groove 13 is rhombus, due to the poor shortcoming of the tear-resistant performance of EPDM elastomeric material, still can residual zigzag overlap on sealing ring after torn edges, this not only affects the outward appearance of product, and the serviceability of EPDM sealing ring is also had a significant impact.
Through retrieval, the existing technical scheme of being devoted to solve rubber finning is open, and if China Patent No. is ZL200720196510.6, Granted publication day is on December 3rd, 2008, and invention and created name is: a kind of rubber mold; This application case comprises at least two stacked templates, is formed at the die cavity between adjacent forms, and be arranged on the torn edges groove on the die joint of described each template, described torn edges groove comprises the not sealing annular groove and at least one extension slot that arrange around described die cavity, the described annular groove that do not seal has two ring ends, and described extension slot extends to the direction away from described die cavity from one of two described ring ends.The described cross section that does not seal annular groove is triangle, rhombus, semicircle or circular.Owing to arranging and not sealing annular groove and extension slot in this rubber mold, in the time utilizing this rubber mold to manufacture a product, this does not seal in annular groove and forms accordingly the not closed ring torn edges around goods, forms the easy fracture band being connected with one end of this torn edges in this extension slot.In the time removing this torn edges, set about from easy fracture band, along torn edges, the torn edges of product is torn easily, can be owing to product edge directly firmly being caused to burr or the disrepair phenomenon of product.But this application case mould structure complexity, corresponding the increasing of manufacturing cost of mould.
Summary of the invention
1. the technical problem that utility model will solve
The production efficiency that the purpose of this utility model is to overcome large scale peroxide cure EPDM sealing ring in prior art is low, follow-up deburring operation element amount deficiency large, consuming time, provides a kind of large scale peroxide cure EPDM sealing ring machine-shaping device; The technical scheme that uses the utility model to provide, in the follow-up shaping process of EPDM sealing ring product, torn edges, without the visible residual overlap of naked eyes, has met the instructions for use of product, ensured product quality, and production efficiency improves greatly.
2. technical scheme
For achieving the above object, the technical scheme that the utility model provides is:
A kind of large scale peroxide cure EPDM sealing ring machine-shaping device of the present utility model, comprises upper frame, upper padding plate, column, upper rebound, upper die and lower die, lower rebound, lower bolster, lower support, hydraulic connecting bar and hydraulic cylinder; Described upper frame, upper padding plate, upper rebound are connected from top to bottom successively with patrix, and described counterdie, lower rebound, lower bolster and lower support are also for being connected successively from top to bottom; Described upper frame is connected by column with lower support, and lower support is connected with hydraulic cylinder by hydraulic connecting bar, and Hydraulic Cylinder lower support pumps along column;
Described upper die and lower die coordinate formation sealing ring die cavity, and the 0.3-0.5mm place of described sealing ring die cavity both sides is provided with O type torn edges groove, and the surface roughness of this O type torn edges groove is less than or equal to Ra3.2, and the degree of depth of O type torn edges groove is 1/5 of sealing ring depth of cavity; The two ends of described counterdie are provided with remaining glue groove, and this remaining glue slot pitch is 5-8mm from the distance of O type torn edges groove, and the degree of depth of remaining glue groove is 0.3-0.8mm.
Further improve as the utility model, described O type torn edges groove is circular or oval.
Further improve as the utility model, on described upper die and lower die, be all placed with the sealing ring die cavity that 3 row 2 are listed as.
3. beneficial effect
The technical scheme that adopts the utility model to provide, compared with existing known technology, has following beneficial effect:
(1) a kind of large scale peroxide cure EPDM sealing ring machine-shaping device of the present utility model, structure and dimensional parameters to torn edges groove improve, make the EPDM sealing ring product for preparing in follow-up shaping process torn edges without the visible residual overlap of naked eyes, particularly eradicate the problem of tearing scarce generation zigzag overlap that former rhombus torn edges groove exists, ensured high-quality and the high serviceability of EPDM sealing ring;
(2) a kind of large scale peroxide cure EPDM sealing ring machine-shaping device of the present utility model, on its upper die and lower die, all offer the sealing ring die cavity that 3 row 2 are listed as, the throwing glue amount that the structure of multi-cavity double-mold makes to prepare EPDM sealing ring is few, sizing material flows more smooth and easy, the overlap of EPDM sealing ring is thin, be easy to moulding and cure time is short, and product percent of pass and production efficiency improve greatly;
(3) a kind of large scale peroxide cure EPDM sealing ring machine-shaping device of the present utility model, Hydraulic Cylinder lower support pumps and realizes the matched moulds operation of counterdie and patrix along column, and preparation technology's automaticity is high, and labor strength is low.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of large scale peroxide cure EPDM sealing ring machine-shaping device of the present utility model;
Fig. 2 is that the utility model is processed the large scale peroxide cure EPDM sealing ring schematic diagram obtaining;
Fig. 3 is the structural representation of counterdie in the utility model;
Fig. 4 is the mould structure schematic diagram that tradition has rhombus section torn edges groove;
Fig. 5 is the mould structure schematic diagram that the utlity model has O type section torn edges groove.
Label declaration in schematic diagram:
1, upper frame; 2, upper padding plate; 3, column; 4, upper rebound; 5, patrix; 6, counterdie; 7, lower rebound; 8, lower bolster; 9, lower support; 10, hydraulic connecting bar; 11, hydraulic cylinder; 12, sealing ring die cavity; 13, rhombus torn edges groove; 14, O type torn edges groove; 15, remaining glue groove.
Detailed description of the invention
For further understanding content of the present utility model, in conjunction with the accompanying drawings and embodiments the utility model is described in detail.
Embodiment 1
By reference to the accompanying drawings, a kind of large scale peroxide cure EPDM sealing ring machine-shaping device (in conjunction with Fig. 1) of the present embodiment, comprises upper frame 1, upper padding plate 2, column 3, upper rebound 4, patrix 5, counterdie 6, lower rebound 7, lower bolster 8, lower support 9, hydraulic connecting bar 10 and hydraulic cylinder 11.Described upper frame 1, upper padding plate 2, upper rebound 4 and patrix 5 are connected from top to bottom successively, and described counterdie 6, lower rebound 7, lower bolster 8 and lower support 9 are also for being connected successively from top to bottom.Described upper frame 1 is connected by column 3 with lower support 9, and lower support 9 is connected with hydraulic cylinder 11 by hydraulic connecting bar 10, and hydraulic cylinder 11 promotes lower support 9 and pumps and realize the matched moulds operation of counterdie and patrix along column 3.The sealing ring machine-shaping device preparation technology automaticity of the present embodiment is high, and labor strength is low.
Described patrix 5 and counterdie 6 coordinates and forms sealing ring die cavities 12, is all placed with sealing ring die cavity 12(that 3 row 2 are listed as in conjunction with Fig. 3 on described patrix 5 and counterdie 6, and in Fig. 3, O type torn edges groove 14 and remaining glue groove 15 are not shown).Throwing glue amount when the structural design of the present embodiment multi-cavity double-mold makes to prepare EPDM sealing ring is few, and sizing material flows more smooth and easy, and the overlap of EPDM sealing ring is thin, be easy to moulding and cure time is short, and product percent of pass and production efficiency improve greatly.
Be provided with O type torn edges groove 14 in the both sides of sealing ring die cavity 12, the present embodiment O type torn edges groove 14 is circular (in conjunction with Fig. 5).It should be noted that, what patrix 5 and counterdie 6 were offered is semicircle torn edges groove herein, after patrix 5 and counterdie 6 matched moulds, just can form circular torn edges groove.The present embodiment O type torn edges groove 14 be subject to force intensity large, stress point is even, usual rhombus torn edges groove 13(is in conjunction with Fig. 4) the stress point cusp that is rhombus, due to the poor shortcoming of the tear-resistant performance of EPDM elastomeric material, still can residual zigzag overlap on sealing ring after torn edges.
Because the too little meeting of distance between O type torn edges groove 14 and sealing ring die cavity 12 is unfavorable to the intensity of sealing ring die cavity 12, distance can increase too greatly the thickness of sealing ring die joint overlap, O type torn edges groove 14 optimum distances apart from sealing ring die cavity 12 are 0.3-0.5mm, and the present embodiment O type torn edges groove 14 is set to 0.3mm with the distance of sealing ring die cavity 12.In addition, the surface roughness of O type torn edges groove 14 should be less than or equal to Ra3.2, when inventor finds that in production practices the surface roughness of O type torn edges groove 14 is greater than Ra3.2, easily cause O type torn edges groove 14 around produce zigzag crossing with sealing ring die cavity 12, make sealing ring vulcanizate occur many pits of similar orange skin shape at die joint place, reduce the presentation quality at sealing ring die joint place.The diameter of the present embodiment O type torn edges groove 14 is 1/5 of sealing ring die cavity 12 degree of depth, and O type torn edges groove 14 is crossed the intensity that deeply can reduce first sealing ring die cavity 12, second also can waste sizing material.
The two ends of described counterdie 6 are provided with remaining glue groove 15, and the section of remaining glue groove 15 is rectangle, and remaining glue groove 15 plays the effect of depositing clout in forming process, increase normal pressure on sealing ring, make sealing ring overlap thinner, remove overlap so that rear road arranges.Can select according to sealing ring size, mould structure, elastomeric material etc. the position dimension of remaining glue groove 15.For the goods of more difficult control unit consumption, do not affecting under the prerequisite of product quality, remaining glue groove 15 can directly be connected with mould outside.The remaining glue groove 15 of the present embodiment is 5-8mm apart from the optimum distance of O type torn edges groove 14, the best when degree of depth of remaining glue groove 15 is 0.3-0.8mm, because remaining glue groove 15 degree of depth are too small, both affected mould strength, also can reduce sizing material flow resistance, cause starved (be that sizing material is not also full of sealing ring die cavity 12, first flow in remaining glue groove 15); Remaining glue groove 15 degree of depth are excessive does not have the glue effect of well overflowing, and causes sealing ring die joint place flash thickness to increase.The present embodiment with the O type torn edges groove 14 distance remaining glue groove 15 that is 0.3mm for 5mm place working depth, and the surface roughness of remaining glue groove 15 is also less than or equal to Ra3.2.
The present embodiment changes original rhombus torn edges groove 13 structures into O type torn edges groove 14, and position and surface roughness etc. to O type torn edges groove 14 are improved, make the EPDM sealing ring product for preparing in follow-up shaping process torn edges without the visible residual overlap of naked eyes, particularly eradicate the problem of tearing scarce generation zigzag overlap that former rhombus torn edges groove 13 exists, ensured high-quality and the high serviceability of EPDM sealing ring.
A kind of large scale peroxide cure EPDM sealing ring machine-shaping device of the present embodiment, basic structure is with embodiment 1, difference is: the present embodiment O type torn edges groove 14 is for oval, O type torn edges groove 14 is 0.4mm with the distance of sealing ring die cavity 12, with the O type torn edges groove 14 distances remaining glue groove 15 that is 0.5mm for 6mm place working depth.
Embodiment 3
A kind of large scale peroxide cure EPDM sealing ring machine-shaping device of the present embodiment, basic structure is with embodiment 1, difference is: the present embodiment O type torn edges groove 14 is 0.5mm with the distance of sealing ring die cavity 12, with the O type torn edges groove 14 distances remaining glue groove 15 that is 0.8mm for 8mm place working depth.
A kind of large scale peroxide cure EPDM sealing ring machine-shaping device of above-described embodiment, the EPDM sealing ring preparing in the follow-up shaping process of product torn edges without the visible residual overlap of naked eyes, met the instructions for use of product, ensured product quality, and production efficiency improves greatly.What deserves to be explained is, the machine-shaping device of above-described embodiment is also applicable to need be from the direct somatotype of product surface, takes torn edges flash trimming and other rubber products that residual overlap is had higher requirements.
Below schematically the utility model and embodiment thereof are described, this description does not have restricted, and shown in accompanying drawing is also one of embodiment of the present utility model, and actual structure is not limited to this.So, if those of ordinary skill in the art is enlightened by it, in the situation that not departing from the utility model creation aim, without the creationary frame mode similar to this technical scheme and the embodiment of designing, all should belong to protection domain of the present utility model.
Claims (3)
1. a large scale peroxide cure EPDM sealing ring machine-shaping device, comprise upper frame (1), upper padding plate (2), column (3), upper rebound (4), lower rebound (7), lower bolster (8), lower support (9), hydraulic connecting bar (10) and hydraulic cylinder (11), it is characterized in that: also comprise patrix (5) and counterdie (6); Described upper frame (1), upper padding plate (2), upper rebound (4) and patrix (5) are connected from top to bottom successively, and described counterdie (6), lower rebound (7), lower bolster (8) and lower support (9) are also for being connected successively from top to bottom; Described upper frame (1) is connected by column (3) with lower support (9), and lower support (9) is connected with hydraulic cylinder (11) by hydraulic connecting bar (10), and hydraulic cylinder (11) promotes lower support (9) and pumps along column (3);
Described patrix (5) and counterdie (6) coordinate formation sealing ring die cavity (12), the 0.3-0.5mm place of described sealing ring die cavity (12) both sides is provided with O type torn edges groove (14), the surface roughness of this O type torn edges groove (14) is less than or equal to Ra3.2, and the degree of depth of O type torn edges groove (14) is 1/5 of sealing ring die cavity (12) degree of depth; The two ends of described counterdie (6) are provided with remaining glue groove (15), and this remaining glue groove (15) is 5-8mm apart from the distance of O type torn edges groove (14), and the degree of depth of remaining glue groove (15) is 0.3-0.8mm.
2. a kind of large scale peroxide cure EPDM sealing ring machine-shaping device according to claim 1, is characterized in that: described O type torn edges groove (14) is for circular or oval.
3. a kind of large scale peroxide cure EPDM sealing ring machine-shaping device according to claim 2, is characterized in that: on described patrix (5) and counterdie (6), be all placed with the sealing ring die cavity (12) that 3 row 2 are listed as.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320884444.7U CN203650758U (en) | 2013-12-30 | 2013-12-30 | Large-size peroxide vulcanized EPDM sealing ring machining and molding device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320884444.7U CN203650758U (en) | 2013-12-30 | 2013-12-30 | Large-size peroxide vulcanized EPDM sealing ring machining and molding device |
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| CN203650758U true CN203650758U (en) | 2014-06-18 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105666792A (en) * | 2014-11-17 | 2016-06-15 | 昌河飞机工业（集团）有限责任公司 | Method for removing rubbersqueezed out of die-assembly seam of sealing ring with special-shaped section |
| CN106142396A (en) * | 2016-08-03 | 2016-11-23 | 宁波光明橡塑有限公司 | A kind of double-deck O mould |
| CN108357039A (en) * | 2018-05-02 | 2018-08-03 | 南京金三力高分子科技有限公司 | A kind of low pressure becomes the sizing material molding shape of the mouth as one speaks and its application and processing method of EPDM sealing rings |
| CN112092269A (en) * | 2020-08-06 | 2020-12-18 | 广东亿达汽车密封件股份有限公司 | Double-color rubber oil seal mold |
| CN113910522A (en) * | 2021-09-29 | 2022-01-11 | 贵州红阳机械有限责任公司 | T-shaped ring forming tool structure |
| CN113910522B (en) * | 2021-09-29 | 2024-04-30 | 贵州红阳机械有限责任公司 | T-shaped ring forming tool structure |
-
2013
- 2013-12-30 CN CN201320884444.7U patent/CN203650758U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105666792A (en) * | 2014-11-17 | 2016-06-15 | 昌河飞机工业（集团）有限责任公司 | Method for removing rubbersqueezed out of die-assembly seam of sealing ring with special-shaped section |
| CN106142396A (en) * | 2016-08-03 | 2016-11-23 | 宁波光明橡塑有限公司 | A kind of double-deck O mould |
| CN108357039A (en) * | 2018-05-02 | 2018-08-03 | 南京金三力高分子科技有限公司 | A kind of low pressure becomes the sizing material molding shape of the mouth as one speaks and its application and processing method of EPDM sealing rings |
| CN112092269A (en) * | 2020-08-06 | 2020-12-18 | 广东亿达汽车密封件股份有限公司 | Double-color rubber oil seal mold |
| CN113910522A (en) * | 2021-09-29 | 2022-01-11 | 贵州红阳机械有限责任公司 | T-shaped ring forming tool structure |
| CN113910522B (en) * | 2021-09-29 | 2024-04-30 | 贵州红阳机械有限责任公司 | T-shaped ring forming tool structure |
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Effective date of registration: 20160822 Address after: 210061 Jiangsu Province dragon High-tech Zone of Nanjing City Road No. 6 Patentee after: Nanjing Jinsanli Polymer Technology Co Ltd Address before: 210061 Jiangsu city of Nanjing province Nanjing high tech Development Zone, Liuzhou Road No. 6 Patentee before: Nanjing Jinsanli Rubber & Plastic Co., Ltd. |
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Granted publication date: 20140618 Termination date: 20191230 |
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