CN102756449B - Expander for perpendicular cross-linked polyolefin foaming furnace - Google Patents
Expander for perpendicular cross-linked polyolefin foaming furnace Download PDFInfo
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- CN102756449B CN102756449B CN201210263145.1A CN201210263145A CN102756449B CN 102756449 B CN102756449 B CN 102756449B CN 201210263145 A CN201210263145 A CN 201210263145A CN 102756449 B CN102756449 B CN 102756449B
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Abstract
The invention discloses an expander for a perpendicular cross-linked polyolefin foaming furnace. The expander consists of a bowed roller and a straight roller. The bowed roller plays a leading role in expansion, and consists of a central metal rod piece, pulleys and a rubber elastomer shell, wherein the rubber elastomer shell can rotate around an axle center. When the size of the master slice in a foaming width direction at high temperature is enlarged, the bowed roller moves forwards, the master slice passes through a part between the bowed roller and the straight roller, the bowed roller lifts the middle part of the master slice, and the master slice is expanded under the stretching function of the rubber elastomer shell on a surface towards two ends, so that the master slice is prevented from being folded and adhered. The expander is easy to operate and convenient to use, the foamed master slice can be effectively expanded substantially without damage to the surface of the master slice, and the production efficiency and quality of the product are improved.
Description
Technical field
The present invention relates to a kind of crosslinking polyolefin foaming stove expander, refer in particular to polyolefin vertical foaming stove expander.
Background technology
TPO plastic applications is in extensive range, has good physics, chemistry and mechanical property, and its toughness, flexibility and shock-absorbing capacity are good, and has electric insulation, the character such as heat insulation, is widely used in the fields such as packing, chemical industry, building.TPO foamed plastics is widely used, and is also one of foamed plastics successfully making the earliest.As far back as nineteen forty-one, du pont company just utilizes nitrogen method successfully to prepare LDPE foamed plastics.Through the development of decades, foamed polyolefine plastic is full-fledged, in kind and application aspect, has realized variation.Along with deepening continuously and the progress of foaming technique of theoretical research, foamed plastics is having significant progress aspect output and quality.
At present crosslinking polyolefin foaming technique be mainly first polyolefin raw material and various auxiliary agent are mediated, granulation, add extruder to plastify, obtain the polyolefin master slice that each component mixes, then by foaming furnace, foam.General foaming furnace mainly contains two kinds now, and a kind of is to take horizontal stove as preheating section and foaming section, and a kind of is to allow foaming master slice first by one section of horizontal stove, then in vertical furnace, foams.In the second way, horizontal stove mainly provides the preheating of polyolefin master slice, after the interval heating by different temperatures, makes the polyolefin master slice that arrives vertical furnace have certain temperature, is conducive to the carrying out of foaming, improves foaming quality.Vertical furnace is polyolefin master slice foaming section, is that main foaming completes station.Polyolefin master slice enters after vertical furnace, and under high temperature action, blowing agent decomposes, and bubble is scattered in formation expanded polyolefin in master slice.
, can there is the expansion on thickness and width in polyolefin master slice when foaming in vertical furnace, and now polyolefin master slice in semi-molten state, if launched not in time, between sheet material, the overlapped adhesion of meeting, affects the quality of finished product, so need to launch timely by expander.
General expander is generally the four-roller type expander of symmetrical arrangement in body of heater at present, and the sheet material after foaming, through in the middle of two rollers, by relatively rotating of roller, completes expansion process, as shown in Figure 1.This expander requires very high to operator's qualification, and owing to being to realize expansion by giving the pulling force of sheet material left and right directions, so can cause the orientation of macromolecular chain on left and right directions, affects the uniformity of foam performance.Also easily there is deformation in sheet material, variable thickness causes under pulling force effect, affects dimensional homogeneity.In addition, the end surface of roller is long-pending less, and ceaselessly rubs with sheet material, can cause the damage of foamed material, affects surface quality.Therefore need to design a kind of novel expander, when guaranteeing that master slice is realized good expansion, improve the shortcoming of current expander, improve the quality of products.
Summary of the invention
The present invention, in order to make up the deficiencies in the prior art, provides a kind of simple in structure, easy to operate, to master slice surface substantially undamaged cross-linked polyolefin vertical foaming stove expander.
The present invention is achieved through the following technical solutions:
A kind of cross-linked polyolefin vertical foaming stove expander, it is characterized in that comprising a bowed roller and a straight roller, described bowed roller is comprised of the some pulleys that are located at central fixed metal rod, fix on metal rod and the coated outside one deck caoutchouc elasticity body case at pulley, the outermost caoutchouc elasticity body case of bowed roller can be under the drive of motor, by pulley, around metal rod axle center, rotate, rotation direction is identical with polyolefin master slice direction of advance; The two ends of described bowed roller are fixedly connected on the vertical foaming furnace outer wall of the vertical furnace body of heater left and right sides by bowed roller pedestal, can move forward and backward at the inner along continuous straight runs of body of heater, also can be lower mobile in vertical direction, the arcwall face of bowed roller is parallel with horizontal plane direction; The two ends of described straight roller are fixedly connected on the vertical foaming furnace outer wall of the vertical furnace body of heater left and right sides by straight roller pedestal, are positioned at bowed roller below, under the drive of motor, can rotate around Pivot Point Center, also can level, move up and down.
The Metallic rod of described bowed roller central authorities is stainless steel, aluminium alloy or titanium alloy material; The caoutchouc elasticity body case of described bowed roller is silicon rubber, polytetrafluoro rubber or polyurethane rubber material; Described straight roller is stainless steel, aluminium alloy, titanium alloy metal material or silicon rubber, polytetrafluoro rubber, polyurethane rubber plastics elastic body material.
Operation principle of the present invention is:
Due to the arcuate structure of bowed roller, when its surperficial caoutchouc elasticity body case turns to extrados from intrados, girth increases, and can be subject to stretching action and stretches to the two ends of bowed roller.In process of production, foam sheet is passed between bowed roller and straight roller, be positioned at bowed roller protruding to a side.When master slice starts to foam under foaming furnace high temperature action, it is large that width size becomes, now bowed roller can be moved forward, simultaneously straight roller moves backward, make bowed roller with foaming master slice contact, by master slice from middle part jack-up, due to the stretching action of bowed roller caoutchouc elasticity body case to two ends, master slice is launched to two ends, folding and adhesion do not occur.The effect of straight roller is by the relative motion with bowed roller, makes master slice press close to bowed roller, convenient expansion.
The invention has the beneficial effects as follows: compare with the expander that current foaming furnace is general, the present invention is simple in structure, easy to operate, to the basic not damaged in master slice surface, to there is good use value.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Fig. 1 is current general four-roller type expander work schematic diagram;
Fig. 2 is bowed roller structural representation of the present invention;
Fig. 3 is the work schematic diagram of expander of the present invention.
In figure: 1 vertical foaming furnace outer wall, 2 four roller expander pedestals, 3 four roller expanders, 4 foaming master slices, 5 bowed roller pedestals, 6 metal rods, 7 pulleys, 8 rubbery outer covers, 9 bowed rollers, 10 straight roller pedestals, 11 straight rollers.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment, the present invention will be further described.Accompanying drawing is a kind of specific embodiment of the present invention.This embodiment is a kind of cross-linked polyolefin vertical foaming stove expander, it is characterized in that comprising a bowed roller 9 and a straight roller 11, described bowed roller 9 is comprised of the some pulleys 7 that are located at central fixed metal rod 6, fix on metal rod 6 and the coated outside one deck caoutchouc elasticity body case 8 at pulley 7, the outermost caoutchouc elasticity body case 8 of bowed roller 9 can be under the drive of motor, by pulley 7, around metal rod 6 axle center, rotate, rotation direction is identical with polyolefin master slice direction of advance; The two ends of described bowed roller 9 are fixedly connected on the vertical foaming furnace outer wall 1 of the vertical furnace body of heater left and right sides by bowed roller pedestal 5, can move forward and backward at the inner along continuous straight runs of body of heater, also can be lower mobile in vertical direction, the arcwall face of bowed roller 9 is parallel with horizontal plane direction; The two ends of described straight roller 11 are fixedly connected on the vertical foaming furnace outer wall 1 of the vertical furnace body of heater left and right sides by straight roller pedestal 10, are positioned at bowed roller 9 belows, under the drive of motor, can rotate around Pivot Point Center, also can level, move up and down.The metal rod 6 of described bowed roller 9 central authorities is stainless steel, aluminium alloy or titanium alloy material; The caoutchouc elasticity body case 8 of described bowed roller 9 is silicon rubber, polytetrafluoro rubber or polyurethane rubber material; Described straight roller 11 is stainless steel, aluminium alloy, titanium alloy metal material or silicon rubber, polytetrafluoro rubber, polyurethane rubber plastics elastic body material.
As shown in Figure 3, foaming master slice 4 runs into high temperature and starts foaming in vertical furnace, now bowed roller 9 is moved forward, and contacts, and rotate forward with foaming master slice 4; Straight roller 11 moves backward, and under the relativity of two rollers, foaming master slice 4 sticks on bowed roller 11 surfaces, and under the stretching action of bowed roller 11 rubber surface elastomer shells 8, foaming master slice 4 launches to both sides.Bowed roller 9 plays main expansion effect, central metal rod 6, pulley 7, consists of with caoutchouc elasticity body case 8, and caoutchouc elasticity body case 8 can be rotated around axle center.When master slice 4 at high temperature foams the increase of width size, bowed roller 9 moves forward, and master slice is middle with straight roller 11 through bowed roller 9, and bowed roller 9 is by master slice middle part jack-up, by caoutchouc elasticity body case 8, to the stretching action at two ends, master slice 4 is launched, avoid folding, the adhesion of master slice 4.The Metallic rod of described bowed roller central authorities can be stainless steel, aluminium alloy, titanium alloy etc materials, can be resistance to 300 ℃ of above high temperature, be not easy to occur the deformation of creep; The caoutchouc elasticity body case of described bowed roller can be the materials such as silicon rubber, polytetrafluoro rubber, polyurethane rubber, can be resistance to 300 ℃ of above high temperature, there is certain flexural deformation characteristic, do not react with polyolefin melt; Described straight roller can be the metal materials such as stainless steel, aluminium alloy, titanium alloy, can be also the plastics elastic body materials such as silicon rubber, polytetrafluoro rubber, polyurethane rubber.In sum, expander of the present invention is simple to operate, easy to use, can effectively foaming master slice 4 be launched, and to the basic not damaged in master slice surface, improve production effect and quality.
Claims (1)
1. a cross-linked polyolefin vertical foaming stove expander, it is characterized in that comprising a bowed roller (9) and a straight roller (11), described bowed roller (9) is by being located at central fixed metal rod (6), in the upper fixing some pulleys (7) of metal rod (6) and the coated outside one deck caoutchouc elasticity body case (8) at pulley (7), form, the outermost caoutchouc elasticity body case of bowed roller (9) (8) can be under the drive of motor, by pulley (7), around metal rod (6) axle center, rotate, rotation direction is identical with polyolefin master slice direction of advance, the two ends of described bowed roller (9) are fixedly connected on the vertical foaming furnace outer wall (1) of the vertical furnace body of heater left and right sides by bowed roller pedestal (5), can move forward and backward at the inner along continuous straight runs of body of heater, also can be lower mobile in vertical direction, the arcwall face of bowed roller (9) is parallel with horizontal plane direction, the two ends of described straight roller (11) are fixedly connected on the vertical foaming furnace outer wall (1) of the vertical furnace body of heater left and right sides by straight roller pedestal (10), be positioned at bowed roller (9) below, under the drive of motor, can rotate around Pivot Point Center, also can level, move up and down, the metal rod (6) of described bowed roller (9) central authorities is stainless steel, aluminium alloy or titanium alloy material, the caoutchouc elasticity body case (8) of described bowed roller (9) is silicon rubber, polytetrafluoro rubber or polyurethane rubber material, described straight roller (11) is stainless steel, aluminium alloy, titanium alloy metal material or silicon rubber, polytetrafluoro rubber, polyurethane rubber plastics elastic body material, foaming master slice (4) runs into high temperature and starts foaming in vertical furnace, now bowed roller (9) is moved forward, contact with foaming master slice (4), and rotate forward, straight roller (11) moves backward, under the relativity of two rollers, foaming master slice (4) sticks on bowed roller (11) surface, under the stretching action of bowed roller (11) rubber surface elastomer shell (8), foaming master slice (4) launches to both sides, bowed roller (9) plays main expansion effect, by central metal rod (6), pulley (7) forms with caoutchouc elasticity body case (8), caoutchouc elasticity body case (8) is rotated around axle center, when master slice (4) at high temperature foams the increase of width size, bowed roller (9) moves forward, master slice is middle with straight roller (11) through bowed roller (9), bowed roller (9) is by master slice middle part jack-up, by caoutchouc elasticity body case (8), to the stretching action at two ends, master slice (4) is launched, avoid the folding of master slice (4), adhesion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210263145.1A CN102756449B (en) | 2012-07-27 | 2012-07-27 | Expander for perpendicular cross-linked polyolefin foaming furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210263145.1A CN102756449B (en) | 2012-07-27 | 2012-07-27 | Expander for perpendicular cross-linked polyolefin foaming furnace |
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| CN102756449A CN102756449A (en) | 2012-10-31 |
| CN102756449B true CN102756449B (en) | 2014-11-05 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108015953A (en) | 2018-01-11 | 2018-05-11 | 浙江润阳新材料科技股份有限公司 | A kind of amplitude-expanding device for foaming furnace |
| CN109355849A (en) * | 2018-11-24 | 2019-02-19 | 扬州恒冕纺织有限公司 | Wei Bianbu expanding mechanism |
| CN114801014A (en) * | 2022-04-28 | 2022-07-29 | 宁波秦鼎材料科技有限公司 | Vacuum width-fixing stenter for vertical polyolefin foaming furnace |
Citations (8)
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| US3925800A (en) * | 1974-05-02 | 1975-12-09 | Polaroid Corp | Spread roller system for self developing type photographic apparatus |
| US4226426A (en) * | 1979-02-26 | 1980-10-07 | Garlock Inc. | Semi-unitized shaft seal |
| CN2169640Y (en) * | 1993-08-04 | 1994-06-22 | 潍坊第一纺织机械厂 | Curved bar expander |
| CN2289815Y (en) * | 1997-01-08 | 1998-09-02 | 黄石纺织机械厂 | Adjustable angle type roller expander |
| JP2003181365A (en) * | 2001-12-13 | 2003-07-02 | Tohoku Ricoh Co Ltd | Coater |
| CN2654327Y (en) * | 2003-08-14 | 2004-11-10 | 中国辐射防护研究院 | Polyethylene coiled material foaming equipment |
| CN201220469Y (en) * | 2008-04-08 | 2009-04-15 | 卢建忠 | Center wrap-up of rubber isolating film embossing machines |
| CN202685181U (en) * | 2012-07-27 | 2013-01-23 | 山东泰山金润塑胶制品有限公司 | Expander for cross-linked polyolefin vertical foaming furnace |
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2012
- 2012-07-27 CN CN201210263145.1A patent/CN102756449B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3925800A (en) * | 1974-05-02 | 1975-12-09 | Polaroid Corp | Spread roller system for self developing type photographic apparatus |
| US4226426A (en) * | 1979-02-26 | 1980-10-07 | Garlock Inc. | Semi-unitized shaft seal |
| CN2169640Y (en) * | 1993-08-04 | 1994-06-22 | 潍坊第一纺织机械厂 | Curved bar expander |
| CN2289815Y (en) * | 1997-01-08 | 1998-09-02 | 黄石纺织机械厂 | Adjustable angle type roller expander |
| JP2003181365A (en) * | 2001-12-13 | 2003-07-02 | Tohoku Ricoh Co Ltd | Coater |
| CN2654327Y (en) * | 2003-08-14 | 2004-11-10 | 中国辐射防护研究院 | Polyethylene coiled material foaming equipment |
| CN201220469Y (en) * | 2008-04-08 | 2009-04-15 | 卢建忠 | Center wrap-up of rubber isolating film embossing machines |
| CN202685181U (en) * | 2012-07-27 | 2013-01-23 | 山东泰山金润塑胶制品有限公司 | Expander for cross-linked polyolefin vertical foaming furnace |
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| CN102756449A (en) | 2012-10-31 |
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Denomination of invention: A type of amplifier for cross-linked polyolefin vertical foaming furnace Effective date of registration: 20230508 Granted publication date: 20141105 Pledgee: Dezhou Bank Co.,Ltd. Leling Branch Pledgor: SHANDONG TAISHAN JINRUN PLASTIC PRODUCTS Co.,Ltd. Registration number: Y2023980040040 |