CN101767449A - Multi-layer co-extrusion film-blowing die head capable of automatically controlling and stabilizing diameter of female film - Google Patents
Multi-layer co-extrusion film-blowing die head capable of automatically controlling and stabilizing diameter of female film Download PDFInfo
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- CN101767449A CN101767449A CN201010105638A CN201010105638A CN101767449A CN 101767449 A CN101767449 A CN 101767449A CN 201010105638 A CN201010105638 A CN 201010105638A CN 201010105638 A CN201010105638 A CN 201010105638A CN 101767449 A CN101767449 A CN 101767449A
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Abstract
The invention relates to a multi-layer co-extrusion film-blowing die head capable of automatically controlling and stabilizing the diameter of a female film, which belongs to the technical field of the extrusion film-blowing equipment for production of multi-layer plastic films. The multi-layer co-extrusion film-blowing die head comprises a die body which consists of a multi-layer die head and a finish die, a core rod, a finish die core rod, a flow channel in the die head and an air inlet/exhaust duct, and is characterized in that the die body is provided with an infrared probe facing a female film for detection and an infrared reflecting mirror used for receiving and reflecting infrared rays, the infrared probe is connected with an electromagnetic valve, the electromagnetic valve is connected with an air pump and an air pipe, the air inlet/exhaust duct is connected with the air pipe and an exhaust pipe; the inner wall of the finish die is of a trumpet shape with a smaller upper diameter and a larger lower diameter, and the outer wall of the finish die core rod matched with the finish die is of a trumpet shape with a smaller upper diameter and a larger lower diameter. The invention can automatically adjust, control and stabilize the diameter of the female film, thereby completely preventing the phenomenon of breakage in the secondary expansion of the female film. The diameter of the die head can be reduced significantly, thereby reducing the manufacturing cost; the heat dissipation is reduced, thereby saving the energy, and the roundness of the finish die can be adjusted rapidly and conveniently.
Description
Technical field
The invention belongs to make multilayer plastic film extrude the blown film equipment technical field, be specifically related to a kind ofly can control the multi-layer co-extruded blown film die head of stablizing female film circle footpath size automatically.
Background technology
The multilayer stack die head of one of the blown film equipment of extruding of existing making multilayer plastic film, or claim multi-layer co-extruded blown film die head, in process of production, can not promptly monitor in the circle footpath the diameter of elementary female film, thereby the circle footpath of female film is often changed, the existence of this disadvantage directly influences the reexpansion of female film, and the circle footpath of female film diminishes, and then influences the quality of female film reexpansion; The circle footpath of female film becomes big, and female film can break and become useless film in the then reexpansion process, causes very large economy loss can for the blown film production of extruding of multilayer plastic film.In addition, existing multi-layer co-extruded blown film die head, die orifice can produce and lose circle, cause female thickness to approach irregular phenomenon, thereby have both influenced the transparency of female film, can produce female film rupture of membranes phenomenon in the aforesaid reexpansion process again.Produce the mistake circle problem in order to solve die orifice, people have proposed the day for announcing: on October 4th, 2000, notification number: CN2399192Y, the patent No.: 99242221.3 " superposing type die head " technical scheme.But this technical scheme is to be acted on the metal derby (4) by bolt (7), and does not connect between every block of metal derby (4), so need by regulating the circularity that all metal derbies (4) are regulated die orifice, such operation is not only time-consuming, and the difficulty of regulating is big.The also disadvantage that existing multi-layer co-extruded blown film die head exists is that female film circle footpath at multilayer stack die head place is identical with female film circle footpath in mouth mould exit, so its whole die head circle footpath is big, it not only uses the material expense, and whole surface area is big, thereby rapid heat dissipation, and power consumption is big.
Summary of the invention
The objective of the invention is to provide a kind of and can control the multi-layer co-extruded blown film die head of stablizing female film circle footpath size automatically, it can automatically adjust to the circle footpath size of female film in female film process; Easy to adjust quick to die orifice circularity; In the die head manufacture process, can dwindle the circle footpath of each die head, save the material of using of making multilayer stack die head, reduce cost; Extrude in the blown film process at die head, can reduce heat radiation, energy efficient.
Above-mentioned goal of the invention is achieved through the following technical solutions, a kind of can control automatically stablized the big or small multi-layer co-extruded blown film die head in female film circle footpath, it comprises the die body of being made up of multilayer die head, mouthful mould, plug, the mouth die mandrel, runner in the die head, the intake and exhaust duct, its main points are to be equipped with on the die body infrared reflecting mirror of infrared probe, reception and the reflected infrared ray surveyed facing to female film, infrared probe is connected with a magnetic valve, magnetic valve is connected with an air pump, appendix, and the intake and exhaust duct is connected with appendix, blast pipe.
Above-mentioned can control the multi-layer co-extruded blown film die head of stablizing female film circle footpath size automatically, one of its structure is that mouthful mould inwall becomes to go up big tubaeform of the little bore down of bore, the mouth die mandrel that cooperates with the mouth mould, its outer wall become to go up bore little under big tubaeform of bore.
Above-mentioned can control the multi-layer co-extruded blown film die head of stablizing female film circle footpath size automatically, and one of its structure is that a mouthful mould bottom is shaped on two annulus, and interior annulus is the die orifice adjusting ring, and the adjusting screw bolt of regulating die orifice adjusting ring circularity is housed on the outer toroid.
Operation of the present invention is as follows: in female film extrusion blow process, circularity and thickness in order to ensure female film are even, should regulate the circularity of die orifice adjusting ring, regulating mouthful circularity concrete operations of mould bottom die orifice adjusting ring is: the adjusting screw bolt of all angles on mouthful mould bottom outer toroid is regulated in rotation, makes the die orifice adjusting ring reach desired circularity.In order the circle footpath size of female film to be automatically adjusted, then on infrared probe, set the number range in female film circle footpath, after female film goes out from the extrusion blow of mouth mould, infrared probe is surveyed facing to female film, the infrared light that infrared probe sends is returned infrared probe by the infrared reflecting mirroring, infrared probe can be measured the actual circle footpath of female film, and in the scope that is provided with, then the magnetic valve that is connected with infrared probe, air pump are failure to actuate as the circle footpath of female film; The hot gas that produces when female film inside makes female film circle footpath greater than the scope that is provided with, and the hot gas in then female film can discharge automatically by intake and exhaust duct, blast pipe, thereby the round footpath of female film is diminished.When the circle footpath of female film less than the scope that is provided with, then infrared probe starts magnetic valve, air pump action automatically, the gas of air pump output is imported in female film by appendix, intake and exhaust duct, and female film is expanded, thereby makes female film circle footpath return to the scope of setting; When the scope that setting is got back in female film circle footpath, infrared probe makes magnetic valve, air pump quit work automatically, promptly stops by appendix, intake and exhaust duct to female film gas transmission.
Beneficial effect of the present invention: the one, can regulate the circle footpath size that female film is stablized in control automatically by infrared probe, infrared reflecting mirror, magnetic valve, air pump, appendix, intake and exhaust duct, blast pipe, overcome existing multi-layer co-extruded blown film die head, in process of production can not be to the promptly round disadvantage of directly monitoring of the diameter of elementary female film, can thoroughly eliminate fracture phenomena in female film reexpansion process, make the quality of female film reach stable high-quality.The 2nd, mouthful mould inwall becomes to go up big tubaeform of the little bore down of bore, the mouth die mandrel that cooperates with the mouth mould, its outer wall becomes to go up big tubaeform of the little bore down of bore, and said structure is reduced the multilayer die diameter of the female film in extrusion blow identical circle footpath significantly, and cost is reduced; Because of multilayer die head circle footpath reduces, make volume reduce, thereby make heat radiation reduce energy savings.The 3rd, the die orifice adjusting ring regulate mouthful mould the convexity ratio prior art---patent " superposing type die head " metal derby structure is convenient and swift, because do not connect between every block of metal derby of patent " superposing type die head ", need regulate all metal derbies so regulate the circularity of mouthful mould, therefore operation is very loaded down with trivial details time-consuming; And die orifice adjusting ring of the present invention is an annulus, so when regulating screw bolt adjusting die orifice adjusting ring by one, the die orifice adjusting ring in its certain radian scope all can be adjusted, so its adjusting is convenient to operation.
Description of drawings
Fig. 1: structural representation of the present invention
The A-A cutaway view of Fig. 2: Fig. 1
1-die head among Fig. 1-2,2-mouth mould, 3-die body, 4-plug, 5 mouthfuls of die mandrels, 6-runner, 7-intake and exhaust duct, the female film of 8-, 9-infrared probe, 10-infrared reflecting mirror, 11-magnetic valve, 12-air pump, the 13-appendix, the 14-blast pipe, 15-die orifice adjusting ring, the 16-outer toroid, 17-regulates the screw bolt
The specific embodiment
By Fig. 1-2 represented be one embodiment of the invention, it comprises the die body of being made up of multilayer die head 1, mouthful mould 23, plug 4, mouth die mandrel 5, the runner 6 in the die head 1, intake and exhaust duct 7; The infrared reflecting mirror 10 of infrared probe 9, reception and the reflected infrared ray surveyed facing to female film 8 is housed on the die body 3, infrared probe 9 is connected with a magnetic valve 11, magnetic valve 11 is connected with an air pump 12, appendix 13, and intake and exhaust duct 7 is connected with appendix 13, blast pipe 14; Mouthful mould 2 inwalls become to go up big tubaeform of the little bore down of bore, the mouth die mandrel 5 that cooperates with mouth mould 2, its outer wall become to go up bore little under big tubaeform of bore; Mouth mould 2 bottoms are shaped on two annulus, and interior annulus is a die orifice adjusting ring 15, and 32 adjusting screw bolts 17 regulating die orifice adjusting ring 15 circularity are housed on the outer toroid 16.
Claims (3)
1. can control the multi-layer co-extruded blown film die head of stablizing female film circle footpath size automatically for one kind, it comprises the die body of being made up of multilayer die head, mouthful mould, plug, the mouth die mandrel, the runner in the die head, intake and exhaust duct, it is characterized in that being equipped with on the die body infrared reflecting mirror of infrared probe, reception and the reflected infrared ray surveyed facing to female film, infrared probe is connected with a magnetic valve, and magnetic valve is connected with an air pump, appendix, and the intake and exhaust duct is connected with appendix, blast pipe.
2. according to claim 1 can control automatically stablized the big or small multi-layer co-extruded blown film die head in female film circle footpath, it is characterized in that mouthful mould inwall becomes to go up big tubaeform of the little bore down of bore, the mouth die mandrel that cooperates with the mouth mould, its outer wall become to go up big tubaeform of the little bore down of bore.
3. according to claim 1 and 2 can control automatically stablized the big or small multi-layer co-extruded blown film die head in female film circle footpath, it is characterized in that a mouthful mould bottom is shaped on two annulus, interior annulus is the die orifice adjusting ring, and the adjusting screw bolt of regulating die orifice adjusting ring circularity is housed on the outer toroid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010105638A CN101767449A (en) | 2010-01-20 | 2010-01-20 | Multi-layer co-extrusion film-blowing die head capable of automatically controlling and stabilizing diameter of female film |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010105638A CN101767449A (en) | 2010-01-20 | 2010-01-20 | Multi-layer co-extrusion film-blowing die head capable of automatically controlling and stabilizing diameter of female film |
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| Publication Number | Publication Date |
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| CN101767449A true CN101767449A (en) | 2010-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010105638A Pending CN101767449A (en) | 2010-01-20 | 2010-01-20 | Multi-layer co-extrusion film-blowing die head capable of automatically controlling and stabilizing diameter of female film |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102336013A (en) * | 2011-07-22 | 2012-02-01 | 苏州天加新材料有限公司 | Connection structure of multilayer coextrusion die bodies used for preparing heat shrinking films |
| CN103273640A (en) * | 2013-06-03 | 2013-09-04 | 上海山海包装容器有限公司 | Blowing machine die head device capable of controlling wall thickness at multiple points |
| CN103660226A (en) * | 2013-11-26 | 2014-03-26 | 瑞安市红旗塑料包装机械有限公司 | Multi-layer co-extrusion film blowing machine head |
| CN103862666A (en) * | 2014-03-31 | 2014-06-18 | 浙江博尔塑胶有限公司 | Film-blowing module head for improving film thickness uniformity of product |
| CN113085127A (en) * | 2021-04-22 | 2021-07-09 | 山东胜通光学材料科技有限公司 | Preparation method of thin high-definition precoated base film |
| CN114474641A (en) * | 2020-10-23 | 2022-05-13 | 中国石油化工股份有限公司 | Film production device and biodegradable mulching film produced by same |
| CN114851512A (en) * | 2022-04-26 | 2022-08-05 | 常州弗兰威新材料有限公司 | Nine-layer co-extrusion die and nine-layer co-extrusion film |
| CN115503207A (en) * | 2021-06-22 | 2022-12-23 | 四川大学 | Forming method and die for producing multilayer composite film |
| CN115503208A (en) * | 2021-06-22 | 2022-12-23 | 四川大学 | Method and die for forming micro-nano laminated composite pipe blank based on multi-layer co-extrusion |
-
2010
- 2010-01-20 CN CN201010105638A patent/CN101767449A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102336013A (en) * | 2011-07-22 | 2012-02-01 | 苏州天加新材料有限公司 | Connection structure of multilayer coextrusion die bodies used for preparing heat shrinking films |
| CN103273640A (en) * | 2013-06-03 | 2013-09-04 | 上海山海包装容器有限公司 | Blowing machine die head device capable of controlling wall thickness at multiple points |
| CN103660226A (en) * | 2013-11-26 | 2014-03-26 | 瑞安市红旗塑料包装机械有限公司 | Multi-layer co-extrusion film blowing machine head |
| CN103862666A (en) * | 2014-03-31 | 2014-06-18 | 浙江博尔塑胶有限公司 | Film-blowing module head for improving film thickness uniformity of product |
| CN103862666B (en) * | 2014-03-31 | 2016-02-10 | 浙江博尔塑胶有限公司 | Improve the film-blowing die head of the horizontal film thickness uniformity of product |
| CN114474641A (en) * | 2020-10-23 | 2022-05-13 | 中国石油化工股份有限公司 | Film production device and biodegradable mulching film produced by same |
| CN113085127A (en) * | 2021-04-22 | 2021-07-09 | 山东胜通光学材料科技有限公司 | Preparation method of thin high-definition precoated base film |
| CN115503207A (en) * | 2021-06-22 | 2022-12-23 | 四川大学 | Forming method and die for producing multilayer composite film |
| CN115503208A (en) * | 2021-06-22 | 2022-12-23 | 四川大学 | Method and die for forming micro-nano laminated composite pipe blank based on multi-layer co-extrusion |
| CN115503207B (en) * | 2021-06-22 | 2024-09-13 | 四川大学 | Forming method and die for producing multilayer composite film |
| CN115503208B (en) * | 2021-06-22 | 2024-10-22 | 四川大学 | Forming method and die for micro-nano laminated composite pipe blank based on multilayer coextrusion |
| CN114851512A (en) * | 2022-04-26 | 2022-08-05 | 常州弗兰威新材料有限公司 | Nine-layer co-extrusion die and nine-layer co-extrusion film |
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Open date: 20100707 |