CN210309026U - Polyimide film longitudinal stretching device - Google Patents
Polyimide film longitudinal stretching device Download PDFInfo
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- CN210309026U CN210309026U CN201920866843.8U CN201920866843U CN210309026U CN 210309026 U CN210309026 U CN 210309026U CN 201920866843 U CN201920866843 U CN 201920866843U CN 210309026 U CN210309026 U CN 210309026U
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Abstract
The utility model provides a polyimide film longitudinal stretching device, which comprises a bracket, wherein a guide roller set, a heating roller, a cooling roller set, a traction roller and a winding roller are sequentially arranged on the bracket; a second guide roller and a first guide roller are sequentially arranged between the guide roller set and the heating roller, the first guide roller is positioned obliquely above the second guide roller, the top end of the first guide roller is higher than that of the heating roller, and the shape of the central connecting line of the first guide roller, the second guide roller and the heating roller is an acute triangle; the top ends of the first guide roll, the lower cooling roll and the drawing roll are the same in height. The application provides a vertical stretching device of polyimide film is through setting up first guide roll and second guide roll for the area of contact greatly increased of warming mill and elementary film, thereby make the warming mill contactless elementary film and the difference in temperature between the position of the elementary film that contacts diminish, be difficult to influence the tensile quality of polyimide film, can satisfy people to the demand of higher quality of polyimide film.
Description
Technical Field
The utility model belongs to the technical field of polyimide film production facility and specifically relates to a polyimide film longitudinal stretching device.
Background
In the production process of the polyimide film, the produced primary film is thicker and generally needs to be stretched by a longitudinal stretching device to form the polyimide film with thinner thickness, so that the requirements of people are met, the existing longitudinal stretching device directly contacts with a heating roller after the primary film is poured into the roller set, so that the contact area of the primary film and the heating roller is smaller, a certain temperature difference exists between the part of the heating roller which is not contacted with the primary film and the part of the heating roller which is contacted with the primary film due to the fact that the part of the heating roller which is contacted with the primary film is exothermic, the local heat release speed of the heating roller is higher due to the fact that the contact area of the primary film and the heating roller is smaller and the temperature required by stretching of the primary film is reached, and therefore the temperature difference between the part of the heating roller which is not contacted with the primary film and the part of the primary, it cannot satisfy the demand of people for higher quality of polyimide film.
Disclosure of Invention
An object of the utility model is to provide a polyimide film longitudinal stretching device to solve foretell technical problem.
The technical scheme of the application is as follows: a longitudinal stretching device for a polyimide film comprises a support, wherein a guide roller set, a heating roller, a cooling roller set, a traction roller and a winding roller are sequentially arranged on the support; the guide roller group comprises an upper guide roller and a lower guide roller, a first gap for the primary film to pass through is arranged between the upper guide roller and the lower guide roller, and the rotation directions of the upper guide roller and the lower guide roller are opposite, so that a pushing force for the primary film to the heating roller direction is formed at the first gap; the cooling roller group comprises an upper cooling roller and a lower cooling roller, a second gap for the primary film to pass through is formed between the upper cooling roller and the lower cooling roller, and the rotation directions of the upper cooling roller and the lower cooling roller are opposite, so that a pushing force to the direction of the primary film towards the drawing roller is formed at the second gap; a second guide roller and a first guide roller are sequentially arranged between the guide roller group and the heating roller, the first guide roller is positioned obliquely above the second guide roller, the top end height of the first guide roller is higher than that of the heating roller, and the shape of the connecting line of the centers of the first guide roller, the second guide roller and the heating roller is an acute triangle; the top ends of the first guide roll, the lower cooling roll and the drawing roll are the same in height.
Preferably, an extrusion roller set is installed between the heating roller and the cooling roller set, the extrusion roller set comprises an upper extrusion roller and a lower extrusion roller, a first elastic belt is sleeved on the upper extrusion roller, a second elastic belt is sleeved on the lower extrusion roller, a third gap is formed between the first elastic belt and the second elastic belt, and the third gap is smaller than the second gap; the rotation directions of the upper squeezing roller and the lower squeezing roller are opposite, so that a pushing force to the direction of the traction roller of the primary film is formed at the third gap.
Preferably, each of the squeeze roller groups includes an upper squeeze roller and a lower squeeze roller, and the squeeze roller group includes a plurality of squeeze rollers.
Preferably, the third gap of the plurality of press roller groups becomes gradually smaller from the direction close to the heating roller to the direction away from the heating roller.
Preferably, each of the compression roller sets comprises an upper compression roller set formed by at least two upper compression rollers and a lower compression roller set formed by at least two lower compression rollers, the first elastic belt is sleeved on the upper compression roller set, and the second elastic belt is sleeved on the lower compression roller set.
Preferably, the third gap between the first elastic belt and the second elastic belt is gradually smaller from the position close to the heating roller to the position far from the heating roller.
The application provides a vertical stretching device of polyimide film is through setting up first guide roll and second guide roll, make and get into next mechanism through first guide roll direction after the first gap of primary film through the second guide roll direction after along warming mill winding, make the area of contact greatly increased of warming mill and primary film like this, the temperature that will reach the tensile needs of primary film needs the local heat release speed of warming mill slower, thereby make the warming mill not contact primary film and the difference in temperature between the position of the primary film that contacts diminish, be difficult to influence the tensile quality of polyimide film, can satisfy people to the demand of higher quality of polyimide film.
Drawings
FIG. 1 is a schematic structural diagram of a longitudinal stretching apparatus for polyimide film according to the present invention;
fig. 2 is a second schematic structural view of a longitudinal stretching apparatus for polyimide film provided by the present invention;
fig. 3 is a third schematic structural view of a longitudinal stretching apparatus for polyimide films according to the present invention;
in the figure: the device comprises a support 1, an upper guide roller, a lower guide roller 3, a first guide roller 5, a second guide roller 4, a heating roller 6, an upper extrusion roller 7, a first elastic belt 7-1, a lower extrusion roller 8, a second elastic belt 8-1, an upper cooling roller 9, a lower cooling roller 10, a traction roller 11, a winding roller 12 and a primary film 13.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Embodiment 1, the utility model provides a polyimide film longitudinal stretching device, refer to fig. 1, including support 1, on which a guide-in roller set, a heating roller 6, a cooling roller set, a traction roller 11 and a winding roller 12 are sequentially mounted; the guide roller group comprises an upper guide roller 2 and a lower guide roller 3, a first gap for the primary film to pass through is arranged between the upper guide roller and the lower guide roller, and the rotation directions of the upper guide roller and the lower guide roller are opposite, so that a pushing force for the primary film to the heating roller direction is formed at the first gap; the cooling roller group comprises an upper cooling roller 9 and a lower cooling roller 10, a second gap for the primary film to pass through is formed between the upper cooling roller and the lower cooling roller, and the rotation directions of the upper cooling roller and the lower cooling roller are opposite, so that a pushing force for the primary film to the direction of the drawing roller is formed at the second gap; a second guide roller 4 and a first guide roller 5 are sequentially arranged between the guide roller group and the heating roller, the first guide roller is positioned obliquely above the second guide roller, the top end height of the first guide roller is higher than that of the heating roller, and the shape of the central connecting line of the first guide roller, the second guide roller and the heating roller is an acute triangle; the top heights of the first guide roll, the lower cooling roll and the drawing roll are approximately the same, preferably completely the same, and the top height of the lower cooling roll is less than the top height of the first guide roll and the top height of the drawing roll.
As a preferable scheme, a squeezing roller group is installed between the heating roller and the cooling roller group, the squeezing roller group comprises an upper squeezing roller 7 and a lower squeezing roller 8, a first elastic belt 7-1 is sleeved on the upper squeezing roller, a second elastic belt 8-1 is sleeved on the lower squeezing roller, high-temperature resistant rubber belts can be used for the first elastic belt and the second elastic belt, a third gap is formed between the first elastic belt and the second elastic belt, and the third gap is smaller than the second gap; the rotation directions of the upper squeezing roller and the lower squeezing roller are opposite, so that a pushing force to the direction of the traction roller of the primary film is formed at the third gap.
As a preferred embodiment, referring to fig. 2, each of the squeeze roller groups includes an upper squeeze roller and a lower squeeze roller, and the squeeze roller group includes a plurality of squeeze rollers. The third gaps of the plurality of press roller groups become smaller from the direction close to the heating roller to the direction far away from the heating roller.
The polyimide film longitudinal stretching device of this structure can be used by mounting the primary film 13 in the manner shown in fig. 1 and 2, and this structure has the following advantages:
1) through setting up first guide roll and second guide roll, make after the first gap of elementary film through the guide of second guide roll after the winding of warming mill, get into next mechanism through the guide of first guide roll, make the area of contact greatly increased of warming mill and elementary film like this, the temperature that will reach the tensile needs of elementary film needs the local heat release speed of warming mill to be slower, thereby make the warming mill not contact the difference in temperature between the position of elementary film and the elementary film that contacts diminish, be difficult to influence the tensile quality of polyimide film, can satisfy people to the demand of higher quality of polyimide film.
2) The extrusion rollers are arranged to stretch the primary film after extrusion, so that the primary film can be stably and excessively formed into a thinner film product, and particularly, a structure that a third gap of the plurality of extrusion roller sets is gradually reduced from a position close to the heating roller to a position far away from the heating roller is adopted, so that the stable transition effect is better, and the film product with better quality and smaller thickness can be produced; the first elastic belts and the second elastic belts of the plurality of extrusion roller sets are in contact with the primary film, so that the transverse shrinkage of the primary film in the stretching process can be prevented, and the quality of a film product is improved.
Example 2 is different from example 1 in the arrangement of the squeeze roller group, and the primary film 13 may be mounted in the manner of fig. 3 when the polyimide film longitudinal stretching apparatus of this structure is used, which has the following advantages:
1) through setting up first guide roll and second guide roll, make after the first gap of elementary film through the guide of second guide roll after the winding of warming mill, get into next mechanism through the guide of first guide roll, make the area of contact greatly increased of warming mill and elementary film like this, the temperature that will reach the tensile needs of elementary film needs the local heat release speed of warming mill to be slower, thereby make the warming mill not contact the difference in temperature between the position of elementary film and the elementary film that contacts diminish, be difficult to influence the tensile quality of polyimide film, can satisfy people to the demand of higher quality of polyimide film.
2) The extrusion roller is arranged to stretch the primary film after extrusion, so that the primary film can be stably and excessively formed into a thinner film product, and particularly, a structure that a third gap of the extrusion roller group is gradually reduced from a position close to the heating roller to a position far away from the heating roller is adopted, so that the stable transition effect is better, and the film product with better quality and smaller thickness can be produced; the first elastic belts and the second elastic belts of the plurality of extrusion roller sets are in contact with the primary film, so that the transverse shrinkage of the primary film in the stretching process can be prevented, and the quality of a film product is improved.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the present invention, and the words first, second, etc. are used only for the distinction of names and not for the limitation of technical terms, and it is obvious to those skilled in the art that the present invention can be variously modified and changed. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A polyimide film longitudinal stretching device comprises a support (1), wherein a guide roller set, a heating roller (6), a cooling roller set, a traction roller (11) and a winding roller (12) are sequentially arranged on the support;
the guide roller group comprises an upper guide roller (2) and a lower guide roller (3), a first gap for the primary film to pass through is formed between the upper guide roller and the lower guide roller, and the rotation directions of the upper guide roller and the lower guide roller are opposite, so that a pushing force for the primary film to the heating roller direction is formed at the first gap;
the cooling roller group comprises an upper cooling roller (9) and a lower cooling roller (10), a second gap for the primary film to pass through is formed between the upper cooling roller and the lower cooling roller, and the rotation directions of the upper cooling roller and the lower cooling roller are opposite, so that a pushing force for the primary film to the direction of the drawing roller is formed at the second gap;
the heating roller is characterized in that a second guide roller (4) and a first guide roller (5) are sequentially arranged between the guide roller group and the heating roller, the first guide roller is positioned above the second guide roller in an inclined mode, the top end of the first guide roller is higher than that of the heating roller, and the shape of the connecting line of the centers of the first guide roller, the second guide roller and the heating roller is an acute triangle;
the top ends of the first guide roll, the lower cooling roll and the drawing roll are the same in height.
2. The longitudinal stretching device of the polyimide film as claimed in claim 1, wherein a squeeze roller group is installed between the heating roller and the cooling roller group, the squeeze roller group comprises an upper squeeze roller (7) and a lower squeeze roller (8), the upper squeeze roller is sleeved with a first elastic belt (7-1), the lower squeeze roller is sleeved with a second elastic belt (8-1), a third gap is formed between the first elastic belt and the second elastic belt, and the third gap is smaller than the second gap;
the rotation directions of the upper squeezing roller and the lower squeezing roller are opposite, so that a pushing force to the direction of the traction roller of the primary film is formed at the third gap.
3. The polyimide film longitudinal stretching device according to claim 2, wherein each of said squeeze roller groups comprises an upper squeeze roller and a lower squeeze roller, and said squeeze roller group comprises a plurality of.
4. The polyimide film longitudinal stretching apparatus according to claim 3, wherein the third gaps of the plurality of press roller groups are gradually decreased from the position near the heated roller to the position far from the heated roller.
5. The polyimide film longitudinal stretching device according to claim 2, wherein each of said squeeze roller groups comprises an upper squeeze roller group formed of at least two upper squeeze rollers and a lower squeeze roller group formed of at least two lower squeeze rollers, said first elastic band being fitted over said upper squeeze roller group, and said second elastic band being fitted over said lower squeeze roller group.
6. The polyimide film longitudinal stretching apparatus according to claim 5, wherein a third gap between said first elastic belt and said second elastic belt is gradually smaller from a position close to said heated roller to a position away from said heated roller.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201920866843.8U CN210309026U (en) | 2019-06-10 | 2019-06-10 | Polyimide film longitudinal stretching device |
Applications Claiming Priority (1)
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CN201920866843.8U CN210309026U (en) | 2019-06-10 | 2019-06-10 | Polyimide film longitudinal stretching device |
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CN210309026U true CN210309026U (en) | 2020-04-14 |
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CN201920866843.8U Active CN210309026U (en) | 2019-06-10 | 2019-06-10 | Polyimide film longitudinal stretching device |
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2019
- 2019-06-10 CN CN201920866843.8U patent/CN210309026U/en active Active
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