CN203046095U - T-shaped die for extrusion moulding - Google Patents
T-shaped die for extrusion moulding Download PDFInfo
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- CN203046095U CN203046095U CN 201220645419 CN201220645419U CN203046095U CN 203046095 U CN203046095 U CN 203046095U CN 201220645419 CN201220645419 CN 201220645419 CN 201220645419 U CN201220645419 U CN 201220645419U CN 203046095 U CN203046095 U CN 203046095U
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- cooling
- lip
- inner cap
- resin
- width
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model provides a T-shaped die for extrusion moulding. The T-shaped die for extrusion moulding can prevent resin leakage, degradation and scorching caused by a sliding part between a die main body and an inner cover of an inner cap type T-shaped die with variable slice width. According to the T-shaped die for extrusion moulding, molten resin is provided from a branching part (3) formed on a die main body (1), and the molten resin is extruded out from a lip outlet (6) by virtue of a die flat part (4) and a lip flat part (5) to form a slice (S) or film with width expanded to target width, wherein a pair of inner caps (11) are arranged in the die and can slide freely to get close and depart from each other in the branching part (3) of the die main body (1), the die flat part (4) and the lip flat part (5) so as to freely adjust moulding width; a first cooling part (20) extending along the sliding direction of the inner caps (11) is arranged on the die main body (1) near and in front of and behind the branching part (3) and the base end part of the inner caps (11), a protruding part (41) protruding from the lip outlet (6) is formed at the front end part of the inner caps (11), and a second cooling part (40) is arranged on the protruding part (41).
Description
Technical field
The utility model relates to a kind of extrusion molding with T pattern tool, can adjust the shaping width for extrusion molding thin wall shape resin flake or film freely.
Background technology
The extrusion molding in the past of extrusion molding thin wall shape resin flake or film comprises the variable T pattern of inner cap formula sheet width tool with T pattern tool.In the above-mentioned T pattern tool, be formed with shunt portion, mould par, lip par and lip outlet in the mode that is communicated with the resin supply port of die main body 1, and sealed the both sides of shunt portion, mould par, lip par and lip outlet by the pair of right and left inner cap.Above-mentioned inner cap 11 is configured to slide from Tathagata adjustment formation width along the lip width.In said structure, will provide the molten resin that comes to import mould par and lip par from shunt portion from the resin supply port, and extrude above-mentioned molten resin from the lip outlet, thereby with thin slice or film shaped be target width.
Yet, above-mentioned extruding with T pattern tool in, molten resin enters die main body and comprises sliding part between the inner cap of lip outlet, exists to be easy to generate resin from sliding part leaks and resin burns problem.
The utility model content
In order to address the above problem, the purpose of this utility model is to provide a kind of extrusion molding T pattern tool, this extrusion molding cools off the integral body that comprises the lip outlet side and the die main body of inner cap enough equably with T pattern prodigiosin, thereby can prevent effectively that resin from burning from sliding part leakage, resin deterioration and resin.
The utility model first mode provides a kind of extrusion molding T pattern tool, provide molten resin from the shunt portion that is formed at die main body to mould par and lip par, and extrude described molten resin from lip outlet, the width that is shaped is expanded as thin slice or the film of target width, described extrusion molding is characterised in that with T pattern tool, the both sides of the width in die main body, across shunt portion, mould par and lip par are formed with a pair of inner cap, and a pair of described inner cap is configured to the broad ways slip freely and can adjusts the shaping width freely, near shunt portion die main body and the base end part of described inner cap are respectively arranged with first cooling end that extends along the glide direction of described inner cap, leading section at described inner cap is provided with second cooling end, and described second cooling end has the contact-making surface that can contact with extraneous air.
The extrusion molding of the utility model second mode uses T pattern tool on the basis of the first mode structure, the part corresponding with mould par and lip par at inner cap is respectively arranged with the ora terminalis contraction flow region, described ora terminalis contraction flow region has from inner surface towards the outstanding contraction protuberance that arranges of flow passage side, described contraction protuberance is formed with the inclined plane in the lip outlet, and described inclined plane is more more reduced the resin flow towards the ora terminalis side.
On the basis of the second mode structure, the inclined plane of described contraction protuberance has the extrusion molding of the utility model Third Way with T pattern tool: the width inclined plane, tilt from the outside towards inboard broad ways to the lip par from the mould par; And along thickness direction inclined plane that thickness direction tilts, face rearwards or from behind towards preceding face tilt in the past, utilize described width inclined plane and described thickness direction inclined plane, the shaping width is fixed and the runner basal area is diminished towards the lip outlet side gradually from shunt portion side.
On the basis of the first mode structure, described second cooling end is the nature cooling structure to the extrusion molding of the cubic formula of the utility model with T pattern tool, and described natural cooling structure has one or more cooling fins from the outstanding protuberance of lip outlet.
The extrusion molding of the utility model the 5th mode uses T pattern tool on the basis of the first mode structure, described second cooling end is for forcing cooling structure, described pressure cooling structure is formed with cooling block at the protuberance from the outstanding inner cap of lip outlet, and cooling fluid is flowed.
According to first mode of above-mentioned utility model, utilize first cooling end, the die main body corresponding with shunt portion and mould par and the base end part of inner cap are cooled off.In addition, utilize second cooling end, by protuberance the leading section of inner cap and the lip par of die main body are cooled off.Therefore, make it become the low temperature high viscosity by equably the sliding part of die main body and inner cap, near the lip par molten resin integral body being cooled off, can prevent effectively that resin from burning from sliding part leakage and resin, and can prevent that the resin deterioration and the resin that are trapped in sliding part from burning.
Second mode according to above-mentioned utility model, owing to utilize the ora terminalis contraction flow region, make the resin of resin flake or resin film end edge portion send the flow minimizing, so when sending resin from the lip outlet, can prevent resin flake left and right sides end edge portion (ear) and heave the phenomenon of circular section, thereby can form the end edge portion of not heaving.Thus, can in the operation of back, reduce cut off the amount of resin when removing (finishing) end edge portion, thus shaping resin thin slice or film effectively.
According to the Third Way of above-mentioned utility model, utilize to shrink two inclined planes of protuberance, the shaping width can be remained fixingly, and the runner section is diminished gradually, thereby can not hinder resin flows to make it shrink shaping swimmingly.Thus, swimmingly the ora terminalis of extrusion resin thin slice or resin film form smoothly planar, thereby can prevent the phenomenon that end edge portion is heaved circular section effectively.
Cubic formula according to above-mentioned utility model, when using viscosity higher and when being difficult for the resin of deterioration, owing to can utilize cooling fin to carry out the nature cooling, fully and equably the sliding part between the lip par of inner cap leading section and die main body is cooled off, burn so can more effectively prevent resin leakage, resin deterioration and resin.
According to the 5th mode of above-mentioned utility model, utilize the pressure cooling structure of second cooling end, can be effectively and equably to low viscosity and easily the resin of deterioration cool off, thereby can prevent more effectively that resin leakage, resin deterioration and resin from burning.
Description of drawings
Fig. 1 is the front view of the embodiment 1 of expression the utility model T pattern tool.
Fig. 2 is the central vertical profile half sectional view of T pattern tool.
Fig. 3 is A-A cutaway view shown in Figure 2.
Fig. 4 is the side view of T pattern tool.
Fig. 5 is the exploded perspective view of T pattern tool.
Fig. 6 is the stereogram of the interior interior surface of expression T pattern tool.
Fig. 7 is that expression is by the sectional elevation of the end of the resin flake of T pattern tool shaping.
Fig. 8 is the longitudinal section of cooling dome that constitutes first cooling end of T pattern tool.
Fig. 9 is B portion enlarged drawing shown in Figure 3.
Figure 10 is the B portion enlarged drawing of embodiment 2 of second cooling end of expression T pattern tool.
Figure 11 is the B portion enlarged drawing of embodiment 3 of second cooling end of expression T pattern tool.
Description of reference numerals
1 die main body
The 1a lip
3 shunt portions
4 mould pars
5 lip pars
The outlet of 6 lips
7 side plates
8 guide posts
9 adjustment thread spindles
10 shaping width adjusting apparatus
11 inner caps
12 gripper shoes
13 flexure planes
14 ora terminalis contraction flow regions
14a shrinks protuberance
15 pilot holes
16 female threaded holes
20 first cooling ends
21 die side cooling hole
22 lid side cooling holes
23 die side cooling domes
24 lid side cooling domes
28 lips are adjustment part at interval
40 second cooling ends
41 protuberances
42 cooling blocks
43 front cooling hole
44A, 44B cool off air hose
50A second cooling end
50B second cooling end
The specific embodiment
Below embodiment of the present utility model is described.
[embodiment 1]
At this, based on Fig. 1～Fig. 9, illustrate that extrusion molding of the present utility model is with T pattern tool, namely be used for the embodiment 1 of the variable T pattern of inner cap formula sheet width tool of the extrusion molding of thin-walled resin flake or resin film.
(die main body)
As Fig. 1～shown in Figure 5, being formed with at the central portion of die main body 1 provides the resin of molten resin feed path 2.The shunt portion 3 that is the cardinal principle pentagon section of handstand shape is connected with above-mentioned resin feed path 2, and shunt portion 3 forms across whole width.And mould par 4 and lip par 5 are integrally formed, and link to each other with the bottom of above-mentioned shunt portion 3, and offer lip outlet 6.
Pair of right and left inner cap 11 exports 6 to lip, closed on both sides portion from shunt portion 3, mould par 4 and the lip par 5 of die main body 1.Above-mentioned inner cap 11 is configured to slide freely along the width of lip, and can adjust the formation width.In addition, inner cap 11 is separately installed with gripper shoe 12 in its outer face.And the inner surface of the inner cap 11 corresponding with shunt portion 3 forms flexure plane 13, and this flexure plane 13 toward the outer side along the expansion of convex arc surface, in addition, is formed with ora terminalis contraction flow region 14 at the outlet side inner surface of inner cap 11 from resin feed path 2.
(inner cap)
As shown in Figure 6, ora terminalis contraction flow region 14 outstanding being provided with in the above-mentioned left and right sides are shunk protuberance 14a, it is corresponding with mould par 4 and lip par 5 that this shrinks protuberance 14a, has inner side end and towards back roll oblique inclined plane from the outside towards inboard inclination and front from front face side from mould par 4 to lip par 5.Utilize above-mentioned contraction protuberance 14a, export 6 one sides from base end part one side towards lip, the runner basal area of two ora terminalis sides diminishes gradually, thereby the resin of restriction end edge portion is sent flow.Therefore, utilize above-mentioned contraction protuberance 14a, supply with amount of resin and more more reduce towards the outside of end edge portion.Thus, as shown in Figure 7, when sending resin from lip outlet 6, prevent the phenomenon that resin flake S left and right sides end edge portion forms the m of ear that heaves circular section, thereby can form the end edge portion n that does not heave.Thus, can in the operation of back, reduce the amount of resin of cutting off when removing (finishing) end edge portion (ear).
On the side plate 7 that is installed on die main body 1 left and right side, along the glide direction (width of lip) of inner cap 11 and be provided with guide post 8 and be supported for rotation adjustment freely with thread spindle 9 in that upper-lower position is outstanding respectively.And, be formed with in described gripper shoe 12: pilot hole 15, chimeric sliding freely with guide post 8; And female threaded hole 16, be threaded with thread spindle 9 with adjustment.Utilize above-mentioned guide post 8, adjust the structure member of forming with thread spindle 9, pilot hole 15 and female threaded hole 16, constituted shaping width adjusting apparatus 10.Therefore, utilize manual or not shown adjustment drive motor, make to adjust with thread spindle 9 and rotate so that inner cap 11 slides towards mutual direction of closing or detaching direction, thereby can in minimum widith L1 and the scope W between the Breadth Maximum L2 shown in Figure 2, adjust the shaping width.
(first cooling end)
Be formed with first cooling end 20 at the base end side of described inner cap 11 in the position corresponding with the shunt portion 3 of die main body 1.Above-mentioned first cooling end 20 is formed with at die main body 1 and the side plate 7 of shunt portion 3 front and back positions: die side cooling hole 21,21, and the glide direction along inner cap 11 forms respectively; And lid side cooling hole 22, form in the glide direction of upper edge, the position inner cap 11 corresponding with shunt portion 3 of inner cap 11 and gripper shoe 12.And, in above-mentioned die side cooling hole 21,21, be inserted with die side cooling dome 23,23 respectively, in addition, in lid side cooling hole 22, be inserted with and cover side cooling dome 24.
Above-mentioned cooling dome 23,24 inserts in the mode that can adjust the position respectively and is fixed in installing hole 25,25, above-mentioned installing hole 25,25 be formed on gripper shoe 12 or inner cap 11 from one's body.Therefore, by remove by as the adjustment screw 26 of fixed part or adjustment part (not shown) to cooling dome 23,24 fixing, and adjust to insert die side cooling hole 21,22 length (degree of depth), can adjust the cooling degree of the resin that enters glade plane space respectively separately.In addition, by die side cooling dome 23 is fixed on the gripper shoe 12, constituted the link gear of advancing and retreat synchronously with inner cap 11 by shaping width adjusting apparatus 10, even so change the position of inner cap 11, also can utilize above-mentioned link gear, make die side cooling dome 23 same moved further, all the time the fixed range of glade plane space is cooled off.
As shown in Figure 8, above-mentioned cooling dome 23,24 has: columnar cooling urceolus 31 forms bar type and closed at both ends; And water injection pipe 32, on the shaft core position of above-mentioned cooling urceolus 31, connect configuration from base end side, and near leading section opening.Base end side at cooling urceolus 31 is provided with discharge outlet 33.Therefore, be provided as the cooling water of cooling medium from water injection pipe 32, and send to the leading section of cooling urceolus 31, cool off by cooling 31 pairs of die main bodies 1 of urceolus or inner cap 11, and make cooling water return base end side and discharge from discharge outlet 33.
(lip)
As shown in Figure 3, the lip 1a of die main body 1 is rubber-like procheilon structure.That is, be formed with the crooked recess 27 of adjusting at the width of a lip 1a upper edge lip, the interval that recess 27 is used for adjusting lip outlet 6 is adjusted in this bending.And, utilization is arranged on a plurality of adjustment bolts 29 of the lip interval adjustment part 28 between a lip 1a and the die main body 1, drive the interval that lip 1a adjusts lip outlet 6, thereby constitute the rubber-like procheilon structure that to adjust resin flow (sheet thickness).
(second cooling end)
In addition, front at described inner cap 11 is formed with protuberance 41 across whole width, this protuberance 41 is outstanding to outlet side across lip outlet 6, above-mentioned protuberance 41 is provided with second cooling end 40, this second cooling end 40 can utilize extraneous air, cooling water or cold oil, the lip of inner cap 11 and die main body 1 is exported 6 one sides force cooling.
As shown in Figure 9, above-mentioned second cooling end 40 is the forced air-cooling structure, and on the cooling block 42 of the general rectangular section that is integrally formed at protuberance 41 front, be formed with front cooling hole 43 across total length, outlet cooling air hose (cooling duct) 44A is installed in front cooling hole 43.Air hose 44A is cooled off interior distolateral the turning back of cooling block 42 in above-mentioned outlet, and returns by the circuit cools air hose 44B along cooling block 42 fronts or back, utilizes above-mentioned cooling air bring harmful effect can not for shaping resin thin slice S.
(embodiment 2 of second cooling end)
For the resin kind that does not need to force to cool off, the second cooling end 50A of embodiment 2 shown in Figure 10 also can be following structure: the cooling block 42 that forms at protuberance 41 is formed with a plurality of cooling fins 51 or hollow bulb 52, carries out natural air cooling by ingress of air.
(embodiment 3 of second cooling end)
For the resin kind that does not need substantially to cool off, the second cooling end 50B of embodiment 3 shown in Figure 11 only further prolongs protuberance 41 and forms a cooling fin 53, also can carry out natural air cooling.
(effect of embodiment)
In said structure, flow into the molten resin of shunt portion 3 from resin feed path 2, towards width broaden and by inner cap 11 restriction and from mould par 4 via lip par 5 after, export the resin flake S that 6 extrusion moldings are Rack from lip, import forming rolls R again.At this moment, owing to utilize the cooling dome 23,24 of first cooling end 20, at base end side inner cap 11 and die main body 1 are cooled off, be cooled and become the low temperature high viscosity so flow into the molten resin of the glade plane space between inner cap 11 and the die main body 1, thereby can prevent that resin deterioration and resin in the sliding part of inner cap 11 from burning.In addition, utilize above-mentioned tackify effect can prevent that resin from leaking from glade plane space.
In addition, even export 6 one sides at lip, also can utilize the cooling air (cooling fluid) that circulates to circuit cools air hose 44B from the outlet cooling air hose 44A of second cooling end 40, the front of inner cap 11 and lip par 5 and the mould par 4 of die main body 1 are cooled off, make molten resin become the low temperature high viscosity, thereby can prevent that resin from leaking from the sliding part of inner cap 11, and can prevent that the resin that enters sliding part from burning.
In addition, in lip outlet 6, owing to utilize the outstanding contraction protuberance 14a that is arranged on left and right sides inner cap 11 outlet side inner surfaces, the flow of sending of resin is more more reduced towards the ora terminalis side of resin flake S, heave the enation phenomenon of circular section so can prevent from when sending, producing, thereby can form smooth end edge portion n.
And, with thread spindle 9 rotations and by gripper shoe 12 inner cap 11 is slided by the adjustment that makes shaping width adjusting apparatus 10, adjust the width of above-mentioned resin flake S or film.
According to above-described embodiment 1, in first cooling end 20, utilization can be cooled off the sliding part of inner cap 11 base end sides by being installed in the die side cooling dome 23 in the die main body 1 and being installed in first cooling end 20 that the lid side cooling dome 24 in the 3 corresponding portions (base end part) of shunt portion of inner cap 11 constitutes.In addition, in second cooling end 40, utilize the cooling air hose 44A, the 44B that are arranged on the cooling block 42, can the sliding part of inner cap 11 front be cooled off.
Therefore, utilize the cooling air that second cooling end 40 is forced the structure cooled off owing to become, thus can be effectively and equably to low viscosity and easily the resin of deterioration cool off, thereby can prevent that resin leakage, resin deterioration and resin from burning.Thus, can make molten resin become high viscosity, thereby can prevent effectively that resin from leaking from sliding part, in addition, can prevent that the resin deterioration and the resin that are trapped in sliding part from burning.
In addition, when using viscosity higher and when being difficult for the resin of deterioration, as shown in figure 11, owing to can utilize the second cooling end 50B that is carried out the nature cooling by a cooling fin 53, fully and equably the sliding part between the lip par 5 of inner cap 11 leading sections and die main body 1 is cooled off, so can prevent effectively further that resin leakage, resin deterioration and resin from burning.
By being formed with a plurality of cooling fins 51 and hollow bulb 52 at the cooling block 42 that is formed at protuberance 41, guarantee bigger and contact-making surface extraneous air, compare with being cooled off by a cooling fin, can cool off inner cap 11 effectively, thereby resin leakage, resin deterioration and the resin that can further prevent sliding part effectively burn.
In addition, by exporting 6 correspondingly with lip, make the runner section more towards the more little contraction protuberance 14a of outlet side in the inner surface outlet side setting of inner cap 11, can make from the sendout of lip outlet 6 molten resins of sending and more more reduce towards the ora terminalis side.Thus, two end edge portions are heaved the enation phenomenon of circular section about can preventing, thereby can form smooth end edge portion.Therefore, can in the operation of back, reduce the amount of resin of cutting off when removing end edge portion (ear), thereby can make resin flake S or resin film efficiently.
Claims (5)
1. an extrusion molding is with T pattern tool, provide molten resin from the shunt portion that is formed at die main body to mould par and lip par, and extrude described molten resin from the lip outlet, the width that is shaped is expanded as thin slice or the film of target width, described extrusion molding is characterised in that with T pattern tool
The both sides of the width in die main body are formed with a pair of inner cap across shunt portion, mould par and lip par, and a pair of described inner cap is configured to broad ways and slides freely and can adjust the shaping width freely,
Near shunt portion die main body and the base end part of described inner cap are respectively arranged with first cooling end that extends along the glide direction of described inner cap,
Leading section at described inner cap is provided with second cooling end, and described second cooling end has the contact-making surface that can contact with extraneous air.
2. extrusion molding according to claim 1 is characterized in that with T pattern tool,
The part corresponding with mould par and lip par at inner cap is respectively arranged with the ora terminalis contraction flow region, and described ora terminalis contraction flow region has from the contraction protuberance of inner surface towards the outstanding setting of flow passage side,
Described contraction protuberance is formed with the inclined plane in the lip outlet, and described inclined plane is more more reduced the resin flow towards the ora terminalis side.
3. extrusion molding according to claim 2 is characterized in that with T pattern tool,
The inclined plane of described contraction protuberance has: the width inclined plane, tilt from the outside towards inboard broad ways to the lip par from the mould par; And along the thickness direction inclined plane that thickness direction tilts, face rearwards or from behind towards preceding face tilt, in the past
Utilize described width inclined plane and described thickness direction inclined plane, the shaping width is fixed and the runner basal area is diminished towards the lip outlet side gradually from shunt portion side.
4. extrusion molding according to claim 1 is characterized in that with T pattern tool described second cooling end is the nature cooling structure, and described natural cooling structure has one or more cooling fins from the outstanding protuberance of lip outlet.
5. extrusion molding according to claim 1 is with T pattern tool, it is characterized in that, described second cooling end is for forcing cooling structure, described pressure cooling structure is formed with cooling block at the protuberance from the outstanding inner cap of lip outlet, and cooling fluid is flowed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220645419 CN203046095U (en) | 2012-11-29 | 2012-11-29 | T-shaped die for extrusion moulding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220645419 CN203046095U (en) | 2012-11-29 | 2012-11-29 | T-shaped die for extrusion moulding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203046095U true CN203046095U (en) | 2013-07-10 |
Family
ID=48729087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220645419 Expired - Lifetime CN203046095U (en) | 2012-11-29 | 2012-11-29 | T-shaped die for extrusion moulding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203046095U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107708962A (en) * | 2015-06-29 | 2018-02-16 | 东芝机械株式会社 | Optical sheet shaped device and optical sheet forming method |
| CN109070425A (en) * | 2016-04-27 | 2018-12-21 | 东芝机械株式会社 | Optical sheet molding machine and optical sheet forming method |
-
2012
- 2012-11-29 CN CN 201220645419 patent/CN203046095U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107708962A (en) * | 2015-06-29 | 2018-02-16 | 东芝机械株式会社 | Optical sheet shaped device and optical sheet forming method |
| CN107708962B (en) * | 2015-06-29 | 2020-01-03 | 东芝机械株式会社 | Optical sheet molding apparatus and optical sheet molding method |
| US11472086B2 (en) | 2015-06-29 | 2022-10-18 | Shibaura Machine Co., Ltd. | Optical sheet forming device and optical sheet forming method |
| US11759989B2 (en) | 2015-06-29 | 2023-09-19 | Shibaura Machine Co., Ltd. | Optical sheet forming device and optical sheet forming method |
| CN109070425A (en) * | 2016-04-27 | 2018-12-21 | 东芝机械株式会社 | Optical sheet molding machine and optical sheet forming method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130710 |
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| CX01 | Expiry of patent term |