CN201501097U - Dry sizing device of plastic profile extrusion die - Google Patents
Dry sizing device of plastic profile extrusion die Download PDFInfo
- Publication number
- CN201501097U CN201501097U CN2009201878287U CN200920187828U CN201501097U CN 201501097 U CN201501097 U CN 201501097U CN 2009201878287 U CN2009201878287 U CN 2009201878287U CN 200920187828 U CN200920187828 U CN 200920187828U CN 201501097 U CN201501097 U CN 201501097U
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- stock mould
- sizing
- air chamber
- die
- stock
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- Expired - Fee Related
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- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a dry sizing device of a plastic profile extrusion die, which comprises a table, a plurality of longitudinally arranged sizing dies which are arranged on the table and sizing cover plates, wherein a groove surrounding the circumference of a die cavity is at least arranged on one side or two sides of the adjacent end surfaces of the first sizing die and the second sizing die, and the grooves form an air chamber under the assemble state of the first sizing die and the second sizing die; and an air exhaust channel communicated with the air chamber is arranged on the first sizing die or the second sizing die, and an air exhaust hole communicated with the air exhaust channel is arranged on the corresponding sizing cover plate. The sealing forms between the sizing dies by vacuumizing the air chamber, and the vacuum external sizing adsorption capacity of the sizing dies is increased, so that the start-up waste can be reduced, and the production cost can be reduced.
Description
Technical field
The utility model relates to a kind of Survey of Plastic Profile Extrusion Die dry type calibrator that can reduce between the stock mould gas leakage and can increase stock mould junction vacuum.
Background technology
At present, known PVC profile shapes extrusion molding cooling apparatus for shaping adopts the outer method for shaping of vacuum, when parison just when die head is extruded, parison and stock mould differ greatly, and there is the slit between parison and the stock mould, the slit of air between stock mould enters the middle die cavity of stock mould, then enter stock mould vacuum room by slit between parison and the stock mould, the vacuum adsorption capacity of finalizing the design is outward weakened, parison and stock mould die cavity are difficult for fitting, and cause stock mould relatively poor to the parison cools effect, so the start long period could be produced qualified section bar, the start waste material is more, causes waste.
One of common processing method is the distance that reduces between the stock mould, but relatively independent between the stock mould, is adjacent to from beginning to end during only by assembling, always has the slit and exists, and can't seal.Two of processing method is to increase by a rubber weather strip between stock mould, can solve the problem of sealing like this, but can not increase the absorption affinity of stock mould junction.Because stock mould junction vacuum air drain spacing is bigger, be the most weak zone of vacuum suction ability.
Summary of the invention
In order to solve gas leak phenomenon between the existing stock mould, the utility model provides a kind of Survey of Plastic Profile Extrusion Die dry type calibrator, can guarantee to seal between the stock mould, and parison rapid deployment and stock mould are attached, and reduces the start waste material.
The utility model is achieved in that it comprises platen and is installed in several the tandem stock moulds on the platen and the cover plate of finalizing the design; at least have in the one or both sides of first stock mould and the second stock mould adjacent face around the groove around the die cavity; first stock mould and second stock mould described groove under confined state forms air chamber; have the bleed-off passage that communicates with air chamber on first stock mould or second stock mould, have the aspirating hole that communicates with bleed-off passage on the corresponding typing cover plate.Make that by vacuumizing the air chamber between first stock mould and second stock mould forms negative pressure at least, reach between the stock mould and seal, air can't enter die cavity by the slit between the stock mould, and the vacuum that can the not influence stock mould adsorption capacity of finalizing the design outward can reduce the start waste material.
Communicate around the groove of above-mentioned formation air chamber and the die cavity, parison by the time around can be subjected to uniform negative-pressure adsorption, increase the adsorption capacity of stock mould junction to parison, make the parison rapid deployment be finalized the mould cooling and shaping.
In order to improve the airtight performance of air chamber, improve the vacuum of air chamber, the fit-up gap between the adjacent stock mould is not more than 0.05mm.
The utility model is by setting up air chamber on the end face between the stock mould, by being vacuumized, air chamber makes that formation seals between the stock mould, air can't enter die cavity by the slit between the stock mould, the vacuum that can the not influence stock mould adsorption capacity of finalizing the design outward, increase the adsorption capacity of stock mould junction simultaneously, make the parison rapid deployment be finalized the mould cooling and shaping, can reduce the start waste material, reduce production costs.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is along A-A line cutaway view among Fig. 1.
The specific embodiment
As depicted in figs. 1 and 2, the dry type calibrator is by platen 15 and be installed in stock mould and the typing cover plate that several front and back on the platen 15 are arranged in order, first and second stock moulds 2 only draw among Fig. 1,13 and the typing cover plate 3,14, on first stock mould, 2 end faces adjacent with second stock mould 13 around have in 12 1 weeks of die cavity with die cavity 12 around the groove that communicates, first and second stock moulds 2,13 under confined state described groove form air chamber 11, have independent air chamber 8 in the typing cover plate 3, have three bleed-off passages 9 that air chamber 11 is connected with independent air chamber 8 on first stock mould 2, have the aspirating hole 10 that communicates with independent air chamber 8 on its typing cover plate 3.
The groove that forms air chamber 11 also can be located at respectively on the adjacent face of first, second stock mould, perhaps is located on the end face of second stock mould 13.
Bleed-off passage 9, independent air chamber 8 and vacuum pumping hole 10 also can be located on second stock mould 13 and the typing cover plate 14 thereof.
During work, parison 1 is entered by stock mould 2 feeding ends, each stock mould begins parison cools is finalized the design, with first stock mould 2 is example, its operation principle is as follows: on first stock mould 2 by be located at typing on the cover plate 3 vacuum pumping hole 6 and air chamber 7 and open air flue 4 and 5 pairs of parison area suctions of air drain in stock mould 2, the parison surface is adsorbed on the die cavity 12, and first stock mould 2 absorbs the heat of parison 1 and by the cooling system in the stock mould heat is taken away.Simultaneously, pumped vacuum systems is bled by vacuum pumping hole 10, independent air chamber 8 and 9 pairs of air chambers 11 of bleed-off passage, make and form negative pressure in the air chamber 11, the air that is entered by the gap between first and second stock moulds 2,13 is in time taken away like this, parison 1 is fitted closely with stock mould die cavity 12, stock mould is effective to parison cools, and the start waste material is less, can reduce production costs.
As shown in Figure 2, each stock mould is made up of four templates 21,22,23,24 in this example, and the length direction by the square key match plate between each template 21,22,23,24 is located.Fit-up gap between the adjacent stock mould can be reduced in the 0.05mm like this, the gas that is entered air chamber 11 by the gap between first and second stock moulds 2,13 is less, and the negative pressure loss that causes thus is less.
Because parison 1 is through after first and second stock moulds 2,13, parison 1 surface is cooled off fast, surface strength strengthens rapidly, the gas that is entered die cavity by gap between the adjacent stock mould of back segment reduces the parison formation quality influence, thereby, can not establish the air seal set of forming by above-mentioned air chamber 11 and corresponding bleed-off passage, independent air chamber and aspirating hole between the adjacent stock mould of back segment.
Claims (4)
1. Survey of Plastic Profile Extrusion Die dry type calibrator, comprise platen (15) and be installed in several the tandem stock moulds on the platen (15) and the cover plate of finalizing the design, it is characterized in that having around die cavity (12) groove all around in the one or both sides of first stock mould (2) and second stock mould (13) adjacent face at least, first stock mould (2) and second stock mould (13) described groove under confined state forms air chamber (11), have the bleed-off passage (9) that communicates with air chamber (11) on first stock mould (2) or second stock mould (13), have the aspirating hole (10) that communicates with bleed-off passage (9) on the corresponding typing cover plate (3/14).
2. Survey of Plastic Profile Extrusion Die dry type calibrator according to claim 1 is characterized in that the groove of described formation air chamber (11) communicates with die cavity (12) all around.
3. Survey of Plastic Profile Extrusion Die dry type calibrator according to claim 1 and 2, it is characterized in that having in the corresponding typing cover plate (3/14) independent air chamber (8) that communicates with aspirating hole (10), the bleed-off passage (9) on first stock mould (2) or second stock mould (13) communicates with independent air chamber (8).
4. Survey of Plastic Profile Extrusion Die dry type calibrator according to claim 4 is characterized in that the fit-up gap between the adjacent stock mould is not more than 0.05mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201878287U CN201501097U (en) | 2009-09-30 | 2009-09-30 | Dry sizing device of plastic profile extrusion die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201878287U CN201501097U (en) | 2009-09-30 | 2009-09-30 | Dry sizing device of plastic profile extrusion die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201501097U true CN201501097U (en) | 2010-06-09 |
Family
ID=42452037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201878287U Expired - Fee Related CN201501097U (en) | 2009-09-30 | 2009-09-30 | Dry sizing device of plastic profile extrusion die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201501097U (en) |
-
2009
- 2009-09-30 CN CN2009201878287U patent/CN201501097U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100609 Termination date: 20130930 |