CN202685181U - Expander for cross-linked polyolefin vertical foaming furnace - Google Patents
Expander for cross-linked polyolefin vertical foaming furnace Download PDFInfo
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- CN202685181U CN202685181U CN 201220367604 CN201220367604U CN202685181U CN 202685181 U CN202685181 U CN 202685181U CN 201220367604 CN201220367604 CN 201220367604 CN 201220367604 U CN201220367604 U CN 201220367604U CN 202685181 U CN202685181 U CN 202685181U
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- master slice
- expander
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Abstract
The utility model discloses an expander for a cross-linked polyolefin vertical foaming furnace. The expander is constituted by an arc-shaped roller and a straight roller, wherein the arc-shaped roller plays a main expanding role and comprises a central metal rod piece, a pulley and a rubber elastomer housing, and the rubber elastomer housing can rotate around the axle center; and when the size of a master slice is increased in the foaming width direction at high temperature, the arc-shaped roller moves forwards, the master slice passes between the arc-shaped roller and the straight roller, the middle part of the master slice is jacked up by the arc-shaped roller, the master slice is expanded by the stretching action of the surface rubber elastomer housing to the two ends, and the folding and the adhesion of the master slice can be avoided. The expander disclosed by the utility model is simple to operate and convenient to use, and can effectively expand the foamed master slice; and furthermore, the surface of the master slice has no injuries basically, and the production efficiency and the quality of a product are improved.
Description
Technical field
The utility model relates to a kind of crosslinking polyolefin foaming stove expander, refers in particular to polyolefin vertical foaming stove expander.
Background technology
The 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.The TPO foamed plastics is widely used, and also is one of foamed plastics that successfully makes the earliest.As far back as nineteen forty-one, du pont company just utilizes the nitrogen method successfully to prepare the LDPE foamed plastics.Through the development of decades, foamed polyolefine plastic is full-fledged, has realized variation in kind and application facet.Along with deepening continuously and the progress of foaming technique of theoretical research, foamed plastics is having significant progress aspect output and the quality.
At present crosslinking polyolefin foaming technique mainly be at first polyolefin raw material and various auxiliary agent are mediated, granulation, add extruder and plastify, obtain the polyolefin master slice that each component mixes, then foam by foaming furnace.General foaming furnace mainly contains two kinds now, and a kind of is take horizontal stove as preheating section and the foaming section, and a kind of is to allow the foaming master slice at first by one section horizontal stove, then foams in vertical furnace.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, and improves foaming quality.Vertical furnace is polyolefin master slice foaming section, is that station is finished in main foaming.After the polyolefin master slice entered vertical furnace, blowing agent decomposed under high temperature action, and bubble is scattered in and forms expanded polyolefin in the master slice.
When the polyolefin master slice foams in vertical furnace, the expansion on thickness and the width can occur, and this moment, the polyolefin master slice was in the semi-molten state, if untimely expansion, the overlapped adhesion of meeting affects the quality of finished product, so need to launch timely by expander between the sheet material.
General expander is generally the four-roller type expander that left-right symmetry is arranged in body of heater at present, and the sheet material after the foaming by relatively rotating of roller, is finished expansion process, as shown in Figure 1 through in the middle of two rollers.This expander is very high to operator's qualification requirement, and owing to being to realize launching by the pulling force that gives the 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.Deformation also easily occurs in sheet material under the pulling force effect, variable thickness causes, and 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 a kind of novel expander of design, when guaranteeing that master slice is realized good the expansion, improve the shortcoming of present expander, improve the quality of products.
Summary of the invention
The utility model provides a kind of simple in structure, easy to operate in order to remedy the deficiencies in the prior art, to master slice surface substantially undamaged cross-linked polyolefin vertical foaming stove expander.
The utility model is achieved by the following technical solution:
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 by being located at central fixed metal rod, forming in the fixing some pulleys of metal rod and 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, rotate around the metal rod axle center by pulley, 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 the 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 the 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 utility model is:
Because the arcuate structure of bowed roller, when its surperficial caoutchouc elasticity body case turned to extrados from intrados, girth increased, and can be subject to stretching action and stretched 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 begins to foam under the foaming furnace high temperature action, it is large that the width size becomes, can move forward bowed roller this moment, simultaneously straight roller is mobile backward, bowed roller contact with the foaming master slice, with master slice from middle part jack-up, owing to bowed roller caoutchouc elasticity body case to the stretching action at two ends, so that master slice launches to two ends, folding and adhesion do not occur.The effect of straight roller be by with the relative motion of bowed roller so that master slice is pressed close to bowed roller, the convenient expansion.
The beneficial effects of the utility model are: compare with the expander that present foaming furnace is general, the utility model is simple in structure, and is easy to operate, to the basic not damaged in master slice surface, has good use value.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is present general four-roller type expander work schematic diagram;
Fig. 2 is the utility model bowed roller structural representation;
Fig. 3 is the work schematic diagram of the utility model expander.
Among the 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 utility model is described further.Accompanying drawing is a kind of specific embodiment of the present utility model.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 by being located at central fixed metal rod 6, forming in the fixing some pulleys 7 of metal rod 6 and coated outside one deck caoutchouc elasticity body case 8 at pulley 7, bowed roller 9 outermost caoutchouc elasticity body case 8 can be under the drive of motor, rotate around metal rod 6 axle center by pulley 7, 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 the 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 begins foaming in vertical furnace, and move forward bowed roller 9 this moment, contacts with foaming master slice 4, and rotates forward; Straight roller 11 is mobile 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, is comprised of with caoutchouc elasticity body case 8 metal rod 6 of central authorities, pulley 7, and caoutchouc elasticity body case 8 can be rotated around the axle center.When master slice 4 at high temperature foams the increase of width size, bowed roller 9 moves forward, and with directly roller 11 is middle, bowed roller 9 is with master slice middle part jack-up through bowed roller 9 for master slice, to the stretching action at two ends master slice 4 is launched by caoutchouc elasticity body case 8, 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 anti-high temperature more than 300 ℃, 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 anti-high temperature more than 300 ℃, have certain flexural deformation characteristic, and do not react with polyolefin melt; Described straight roller can be the metal materials such as stainless steel, aluminium alloy, titanium alloy, also can be the plastics elastic body materials such as silicon rubber, polytetrafluoro rubber, polyurethane rubber.In sum, expander of the present utility model is simple to operate, and is easy to use, can effectively foaming master slice 4 be launched, and to the basic not damaged in master slice surface, improve the production effect and quality.
Claims (2)
1. 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), form in the fixing some pulleys (7) of metal rod (6) and coated outside one deck caoutchouc elasticity body case (8) at pulley (7), the outermost caoutchouc elasticity body case of bowed roller (9) (8) can be under the drive of motor, rotate around metal rod (6) axle center by pulley (7), 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 the 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.
2. a kind of cross-linked polyolefin vertical foaming stove expander according to claim 1 is characterized in that 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220367604 CN202685181U (en) | 2012-07-27 | 2012-07-27 | Expander for cross-linked polyolefin vertical foaming furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220367604 CN202685181U (en) | 2012-07-27 | 2012-07-27 | Expander for cross-linked polyolefin vertical foaming furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202685181U true CN202685181U (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220367604 Expired - Fee Related CN202685181U (en) | 2012-07-27 | 2012-07-27 | Expander for cross-linked polyolefin vertical foaming furnace |
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| CN (1) | CN202685181U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102756449A (en) * | 2012-07-27 | 2012-10-31 | 山东泰山金润塑胶制品有限公司 | Expander for perpendicular cross-linked polyolefin foaming furnace |
-
2012
- 2012-07-27 CN CN 201220367604 patent/CN202685181U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102756449A (en) * | 2012-07-27 | 2012-10-31 | 山东泰山金润塑胶制品有限公司 | Expander for perpendicular cross-linked polyolefin foaming furnace |
| CN102756449B (en) * | 2012-07-27 | 2014-11-05 | 山东泰山金润塑胶制品有限公司 | Expander for perpendicular cross-linked polyolefin foaming furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20200727 |