CN112744631B - Film slitting device and slitting method - Google Patents

Film slitting device and slitting method Download PDF

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Publication number
CN112744631B
CN112744631B CN201911049729.7A CN201911049729A CN112744631B CN 112744631 B CN112744631 B CN 112744631B CN 201911049729 A CN201911049729 A CN 201911049729A CN 112744631 B CN112744631 B CN 112744631B
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China
Prior art keywords
film
cutting
cut
rotary cutter
annular rotary
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CN201911049729.7A
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CN112744631A (en
Inventor
侴白舸
高达利
张师军
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Sinopec Beijing Chemical Research Institute Co ltd
China Petroleum and Chemical Corp
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Sinopec Beijing Research Institute of Chemical Industry
China Petroleum and Chemical Corp
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Priority to CN201911049729.7A priority Critical patent/CN112744631B/en
Publication of CN112744631A publication Critical patent/CN112744631A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/02—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with longitudinal slitters or perforators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5153—Details of cutting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/11—Dimensional aspect of article or web
    • B65H2701/113—Size
    • B65H2701/1133—Size of webs

Abstract

The invention relates to the technical field of cutting equipment, in particular to a film slitting device and a film slitting method. The film cutting device comprises a cutting part for cutting a cylindrical film to be cut into a sheet film and a winding part for accommodating the cut sheet film, wherein in the using process, the winding part is used for accommodating the cut sheet film and providing a film feeding speed for the cylindrical film to be cut, and the annular rotary cutter disc drives the cutter which is obliquely arranged to rotate so as to cut the cylindrical film to be cut and coated on the edge of the annular rotary cutter disc into the sheet film along the spiral direction. The film slitting device provided by the invention can obtain a flaky film by adopting spiral cutting, and meanwhile, a twill flaky film is obtained; the sheet film with the required orientation or the included angle of the grain direction can be obtained by adjusting the inclination direction and the film feeding speed of the cutter according to the requirements of users.

Description

Film slitting device and slitting method
Technical Field
The invention relates to the technical field of cutting equipment, in particular to a film slitting device and a film slitting method.
Background
Currently, in order to improve the physical properties of plastic films and to increase the functionality of the films, it is necessary to stretch-orient the films. When the single-layer film can not meet the requirements, films with different properties of different materials need to be compounded, so that the comprehensive properties of the film are further improved. The film produced at present is mainly a unidirectional (longitudinal) or bidirectional (longitudinal and transverse) stretching oriented film, if the obliquely oriented film exists, and is compounded with the traditional unidirectional or bidirectional oriented film, the comprehensive performance of the film can be further improved, and certain functionality can be endowed, however, the traditional film production equipment cannot continuously produce the obliquely oriented film which forms a certain angle (orientation angle) with the longitudinal direction of the film.
Disclosure of Invention
The invention provides a film slitting device and a slitting method, and the film slitting device can effectively solve the technical problems.
The film cutting device comprises a cutting part and a winding part, wherein the cutting part is used for cutting a cylindrical film to be cut into a sheet film, the winding part is used for accommodating the cut sheet film, the cutting part comprises an annular rotary cutter disc and a cutter connected to the edge of the annular rotary cutter disc, and the winding part is rotated to enable the cut sheet film to be accommodated in the winding part in a surrounding manner; the cutting knife is obliquely connected to the annular rotary cutter disc, and the cutting direction of the cutting knife and the axis of the cylindrical film to be cut form an included angle; the annular rotary cutter disc drives the cutter to rotate so as to cut the cylindrical film to be cut, which is coated on the edge of the annular rotary cutter disc, into sheet films along the spiral direction.
In one embodiment, the film slitting device comprises a support member for expanding the cylindrical film to be slit into a cylindrical shape, the support member is arranged into a circular ring-shaped structure, and the axis of the support member coincides with the axis of the annular rotary cutter head.
In one embodiment, the support member is provided as a variable radius ring.
In one embodiment, the film slitting device further comprises a conveying member for conveying the cylindrical film to be slit to the cutting member, wherein the conveying member comprises a storage roller and a driving roller, and the driving roller is used for conveying the cylindrical film on the storage roller to the cutting member.
In one embodiment, the cutting element further comprises a driving part, and the driving part is in transmission connection with the annular rotary cutter disc and is used for driving the annular rotary cutter disc to rotate around the axis of the annular rotary cutter disc.
In one embodiment, the cutting member comprises at least two cutting knives, and the cutting knives are arranged at intervals on the annular rotary cutter head.
In one embodiment, the cutting knife is movably connected to the edge of the annular rotary cutter disk for adjusting the distance between adjacent cutting knives.
In one embodiment, the cutting knife is rotatably connected to an edge of the annular rotary cutter disk for adjusting a cutting direction of the cutting knife.
In one embodiment, the winding member includes a driving member and a receiving roller, the driving member is in transmission connection with the receiving roller and is used for rotating the receiving roller, and the sheet-shaped film is wound around the receiving roller.
The invention also provides a slitting method, which adopts the film slitting device and comprises the following steps:
the adjusting device comprises: adjusting the cutting direction of the cutter to a preset inclination angle, adjusting the rotating speed of the annular rotary cutter disc to a preset speed, and adjusting the rotating speed of the winding piece to a preset speed;
feeding: coating the cylindrical film to be cut on the annular rotary cutter disc, and manually pulling the cut sheet-shaped film to a receiving roller;
slitting: and opening the annular rotary cutter disc to enable the annular rotary cutter disc to rotate and cut at a preset speed, and opening the winding piece to enable the winding piece to rotate and wind the film at the preset speed.
Compared with the prior art, the film slitting device provided by the invention at least has the following beneficial effects:
the film cutting device comprises a cutting part for cutting a cylindrical film to be cut into a sheet film and a winding part for accommodating the cut sheet film, wherein in the using process, the winding part is used for accommodating the cut sheet film and providing a film feeding speed for the cylindrical film to be cut, and the annular rotary cutter disc drives the cutter which is obliquely arranged to rotate so as to cut the cylindrical film to be cut and coated on the edge of the annular rotary cutter disc into the sheet film along the spiral direction. The film slitting device provided by the invention can obtain a flaky film by adopting spiral cutting, and meanwhile, a twill flaky film is obtained; the inclined direction and the film feeding speed of the cutter can be adjusted according to the requirements of users, thereby obtaining the sheet-like film with the required orientation or texture direction included angle.
The slitting method provided by the invention has the beneficial effects due to the adoption of the film slitting device.
Drawings
The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of a film slitting device according to an embodiment of the present invention;
FIG. 2 is a schematic view of a partial structure of a film slitting device according to an embodiment of the present invention at a first viewing angle;
FIG. 3 is a schematic view of a partial structure of a film slitting device according to an embodiment of the present invention at a second viewing angle;
FIG. 4 is a schematic view of a film slitting device according to an embodiment of the present invention;
FIG. 5 is a schematic drawing showing the unwinding of a film in the form of a tube to be cut;
FIG. 6 is a schematic view of a sheet-like film for slitting;
fig. 7 is a schematic cutter path.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
Reference numerals:
10-a film slitting device; 11-a cutting member; 111-annular rotating cutter head; 113-a cutter; 115-a drive section;
13-a winding member; 15-a support; 151-a guide; 153-an expansion section; 17-a transport; 171-a storage roller;
173-a driving roller; 173 a-first roller member; 173 b-a second roller member; 175-guide rolls.
Detailed Description
The invention will be further explained with reference to the drawings.
Referring to fig. 1 to 3, a film slitting device 10 of the present invention includes a cutting member 11 for slitting a cylindrical film to be slit into a sheet-like film and a winding member 13 for receiving the slit sheet-like film, where the cutting member 11 includes an annular rotary cutter 111 and a cutter 113 connected to an edge of the annular rotary cutter 111, and the winding member 13 is rotated to surround and receive the slit sheet-like film in the winding member 13; the cutting knife 113 is obliquely connected to the annular rotary cutter disc 111, and the cutting direction of the cutting knife 113 and the axis of the cylindrical film to be cut form an included angle; the annular rotary cutter disc 111 drives the cutter 113 to rotate so as to coat the cylindrical film to be cut at the edge of the annular rotary cutter disc 111 and cut the cylindrical film into sheet films along the spiral direction.
The film cutting device 10 provided by the invention comprises a cutting part 11 for cutting a cylindrical film to be cut into a sheet film and a rolling part 13 for accommodating the cut sheet film, wherein in the using process, the rolling part 13 is used for accommodating the cut sheet film and providing a film feeding speed for the cylindrical film to be cut, and the annular rotary cutter disc 111 drives the cutter 113 which is obliquely arranged to rotate so as to cut the cylindrical film to be cut and coated on the edge of the annular rotary cutter disc 111 into the sheet film along the spiral direction. The film slitting device 10 provided by the invention can obtain a flaky film by adopting spiral cutting, and meanwhile, a twill flaky film is obtained; the sheet-like film with the required orientation or texture direction included angle can be obtained by adjusting the inclination direction and the film feeding speed of the cutting knife 113 according to the requirements of users.
In one embodiment, the film slitting device 10 includes a support member 15 for expanding the cylindrical film to be slit into a cylindrical shape, the support member 15 is provided in an annular structure, and an axis of the support member 15 coincides with an axis of the annular rotary cutter 111. The support member 15 is arranged for expanding the cylindrical film to be cut into a cylinder shape, so that the cutting is facilitated; will the axis of support piece 15 with the axis coincidence of cyclic annular rotatory blade disc 111 is convenient for make to wait to cut the tube-shape film and wrap in cyclic annular rotatory blade disc 111 better, and then is favorable to going on of cutting, avoids the feeding slope to lead to cutting the distortion.
Specifically, in this embodiment, the support member 15 includes a guide portion 151 and an expansion portion 153, the guide portion 151 is configured in an annular structure, the expansion portion 153 is configured in a conical shape, and a circular bottom surface of the conical shape is connected to an end surface of the guide portion 151.
In particular, said support 15 is provided as a variable radius ring. The supporting member 15 is an annular member with a variable radius, so that a user can support cylindrical films to be cut with different diameters according to the requirement.
Specifically, in this embodiment, the supporting member 15 may be configured to include at least two rings with different diameters, the diameters of the rings are sequentially increased, and the rings can be sleeved and connected, and in the use process, when the diameter of the cylindrical film to be cut is larger, the rings adapted to the diameter of the cylindrical film to be cut are sleeved and connected. It should be noted that, the specific structure of the supporting member 15 is not limited herein, and it is understood that, in other specific embodiments, the supporting member 15 may be configured as another ring member with a variable radius according to the needs of the user, for example, an elastic abutting member, a flexible abutting member, and the radius of the supporting member 15 can be changed by adjusting the overlapped abutting portion.
In one example, the film slitting device 10 further comprises a conveying member 17 for conveying the cylindrical film to be slit to the cutting member 11, wherein the conveying member 17 comprises a storage roller 171 and a driving roller 173, and the driving roller 173 is used for conveying the cylindrical film on the storage roller 171 to the cutting member 11.
Specifically, the driving roller 173 includes a first roller 173a and a second roller 173b, which are oppositely disposed, and a gap for passing the cylindrical film to be cut is disposed between the first roller 173a and the second roller 173 b; the first roller 173a and the second roller 173b roll in opposite directions so that the cylindrical film to be cut travels toward the cutter 11.
In one example, the conveying member 17 further includes a guide roller 175, the guide roller 175 is disposed between the driving roller 173 and the storage roller 171, and the guide roller 175 has a guiding function and a tensioning function.
In one example, the cutting element 11 further includes a driving portion 115, and the driving portion 115 is in transmission connection with the annular rotary cutter disc 111 and is used for driving the annular rotary cutter disc 111 to rotate around the axis of the annular rotary cutter disc 111. And a driving part 115 is arranged and used for driving the annular rotary cutter disc 111 to rotate around the axis of the annular rotary cutter disc, so that the cutter 113 is driven to rotate, and the cylindrical film to be cut is cut in a rotating manner.
Specifically, in this embodiment, the cutting element 11 further includes a speed regulator (not shown in the figure), and the speed regulator is connected to the driving portion 115, and the speed regulator can adjust the rotation speed of the annular rotary cutter 111, so as to adjust the annular rotary cutter 111 to a preset rotation speed, that is, adjust the cutter 113 to a preset rotation speed.
In one example, the cutting member 11 includes at least two cutting blades 113, and the cutting blades 113 are spaced apart from the annular rotary cutter disc 111.
Specifically, in this embodiment, the cutting member 11 includes three cutting knives 113, and the cutting member 11 includes three cutting knives 113, so as to effectively improve the cutting efficiency, and adjust the spacing distance between the cutting knives 113 according to the different widths of the required sheet-like films.
It should be further noted that the number of the cutting blades 113 is not limited herein, and it should be understood that in other specific embodiments, the number of the cutting blades 113 may also be set to one, two, or four, etc. according to the requirement of the user.
In one example, the cutting blades 113 are movably connected to the edge of the annular rotary cutter disc 111 for adjusting the distance between adjacent cutting blades 113. The cutting knife 113 is movably connected to the edge of the annular rotary cutter disc 111, and the spacing distance between the cutting knives 113 can be adjusted according to different widths of the required sheet-shaped films, so that the sheet-shaped films with different widths can be obtained in the same cutting process.
In one example, the cutting knife 113 is rotatably connected to the edge of the annular rotary cutter disc 111 for adjusting the cutting direction of the cutting knife 113. The cutting knife 113 is rotatably connected to the edge of the annular rotary cutter disc 111, so as to adjust the cutting direction of the cutting knife 113, and further obtain the sheet-shaped film with the required orientation or texture direction included angle.
In one example, the winding member 13 includes a driving member and a receiving roller (not shown), the driving member is in driving connection with the receiving roller for rotating the receiving roller, and the sheet-like film is wound around the receiving roller.
Specifically, in this embodiment, the winding member 13 includes a speed regulator (not shown in the figure), and the speed regulator is connected to the driving portion 115, and the speed regulator can adjust the rotation speed of the receiving roller, so as to adjust the receiving roller to a preset rotation speed, that is, adjust the film feeding speed to a preset speed.
The invention also provides a slitting method, which adopts the film slitting device 10 and comprises the following steps:
the adjusting device comprises: adjusting the cutting direction of the cutter 113 to a preset inclination angle, adjusting the rotation speed of the annular rotary cutter disc 111 to a preset speed, and adjusting the rotation speed of the winding member 13 to a preset speed;
feeding: coating the cylindrical film to be cut on the annular rotary cutter disc 111, and manually pulling the cut sheet-shaped film to a receiving roller;
slitting: the annular rotary cutter disc 111 is opened to make the cutting rotary at a preset speed, and the winding piece 13 is opened to make the film winding rotary at a preset speed.
The slitting method provided by the invention has the beneficial effects because the film slitting device 10 is adopted.
The principle of the film obtained by cutting by the film slitting device 10 provided by the invention is as follows: cutting along a spiral line (as shown in figure 4), and after the cylindrical film to be cut is unfolded, forming a certain included angle between the orientation direction (or texture) and the length direction of the film. FIG. 5 is a schematic view showing the development of a film to be cut in a cylindrical shape, in which the vertical dotted line indicates the orientation direction or texture of the film to be cut in a cylindrical shape, and the solid line AB 1 、B 2 D 1 、D 2 E is the cutting path of the cutter 113, (wherein B 1 And B 2 Is the same point B, D1 and D2 are the same point D), the point A is the entry point of the cutter 113, the angle alpha is the entry angle (namely the included angle between the cutter 113 and the axis of the cylindrical film to be cut) of the cutter 113 from the edge of the cylindrical film to be cut, and C is the point B 1 Point is taken as straight line B 2 D 1 The vertical line is vertical to the foot. FIG. 6 shows a sheet-like film obtained by slittingAs can be seen from fig. 6, angle γ is the angle between the original film orientation direction (or texture direction) and the target film length direction (i.e. cylindrical film axis direction), and angle α and angle γ are complementary angles. When a plurality of cutters 113 cut into a workpiece, the path of the cutters 113 is schematically shown in fig. 7, in which the solid line, the broken line, and the two-dot chain line represent the path of the three cutters 113 cutting into the workpiece at the same time.
As can be seen from the schematic diagram of the path of the cutting blade 113, after the cutting blade 113 cuts along a certain angle, the traveling path is a fixed path, so that when a single cutting blade 113 cuts, the width of the obtained film is a fixed value, as shown in FIG. 5, B is calculated 1 And B 2 Equal height at the same point, i.e., two points, so that the line segment B is equal in height 1 B 2 Parallel to the bottom side, so:
∠α＝∠β
through B 1 Do as B 2 Perpendicular B to D 1 C, then B 1 C is the width D of the obtained film. As can be seen from figures 5 and 6,
B 1 C＝B 1 B 2 ×sinβ
B 1 B 2 ＝π×d
∠α＝90°－∠γ
then: d = π D sin α = π D cos γ
Wherein, B 1 B 2 Is the circumference of a circle of the section of the circular tubular film, d is the diameter of the circular tubular film, angle alpha is the cutting angle of the cutter 113, and angle gamma is the included angle between the orientation direction (or texture direction) of the target film and the length direction of the film. Therefore, the diameter of the desired cylindrical film can be determined according to the target film width.
d＝D/(sinα×π)＝D/(cosγ×π)
During the machining process, the presetting of the winding-up member 13 is adjusted to V 1 When the rotating speed of the cutter 113 device is n and the radius of the cutter 113 fixing mechanism is R, the linear velocity V of the cutter 113 is 2 Is composed of
V 2 ＝2πRn
The speed V of the cutter 113 with respect to the axial direction of the film 3 And the winding speed V of the equipment 1 The components in the axial direction are equal in magnitude and opposite in direction. Therefore, the temperature of the molten metal is controlled,the speed of the cutter 113 relative to the direction of movement of the film is shown in figure 7.
V 3 /V 2 ＝tanα
V 3 ＝V 1 ×sinα
Because ≈ α =90 ° -. Gamma
So V 1 /n＝2πR/sinγ
The winding device is shown in fig. 2, the position of the winding roller is adjustable, and the cutter 113 cuts into the film at a cutting angle alpha, so that the winding roller and the front end face of the film are wound obliquely at an angle alpha.
In one embodiment, the width of the sheet-like film is set to 40cm, and the angle γ between the orientation direction (or grain direction) and the film length direction is 45 °.
Selecting a cutter 113 fixing device of a cutting device, wherein the radius R of the cutter 113 fixing device is 10cm, and cutting with a single cutter and the winding speed V are performed 1 Is 10m/min.
The diameter d of the cylindrical film is:
d＝D/(cosγ×π)＝18cm
the cutting angle α of the cutter 113 is:
∠α＝90°－∠γ＝45°
the rotational speed of the cutter 113 is
n＝V 1 /2πR sinγ≈11r/min
Therefore, the winding speed is set to 10m/min, and the rotation speed of the cutter 113 is set to 11r/min.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (10)

1. A film slitting device, comprising:
the cutting piece is used for cutting the cylindrical film to be cut into sheet-shaped films and comprises an annular rotary cutter disc and a cutter connected to the edge of the annular rotary cutter disc; and
the winding part is used for accommodating the cut sheet-shaped film, and the cut sheet-shaped film can be accommodated in the winding part in a surrounding manner by rotating the winding part;
the cutting knife is obliquely connected to the annular rotary cutter disc, and the cutting direction of the cutting knife and the axis of the cylindrical film to be cut form an included angle; the annular rotary cutter disc drives the cutter to rotate so as to cut the cylindrical film to be cut, which is coated on the edge of the annular rotary cutter disc, into sheet films along the spiral direction;
during feeding, coating the cylindrical film to be cut on the annular rotary cutter head;
winding speed V of the winding piece 1 And the rotating speed n of the cutter satisfy the following relational expression:
V 1 /n＝2πR/sinγ；
wherein alpha is a cutting angle cut into the cylindrical film from the edge of the cylindrical film by the cutter;
gamma is the included angle between the original film orientation direction and the cylindrical film axis direction;
and R is the radius of the annular rotary cutter head.
2. The film slitting device according to claim 1, characterized in that the film slitting device further comprises a support member for expanding the cylindrical film to be slit into a cylindrical shape, the support member is arranged into a circular ring-shaped structure, and the axis of the support member coincides with the axis of the annular rotary cutter head.
3. A film slitting device according to claim 2, characterized in that the supporting element is provided as a variable radius ring.
4. The film slitting device according to claim 1, further comprising a conveying member for conveying the cylindrical film to be slit to the cutting member, the conveying member including a storage roller and a driving roller for conveying the cylindrical film on the storage roller to the cutting member.
5. The film slitting device according to claim 1, wherein the cutting element further comprises a driving portion, and the driving portion is in transmission connection with the annular rotary cutter disc and is used for driving the annular rotary cutter disc to rotate around the axis thereof.
6. The film slitting device according to claim 1 wherein the cutter comprises at least two of the cutters, the cutters being spaced apart from the annular rotating cutter head.
7. A film slitting device according to claim 6 wherein the cutters are movably attached to the edge of the annular rotating cutter disc for adjusting the distance between adjacent cutters.
8. A film slitting device according to any one of claims 1 to 7 wherein the slitting knives are rotatably attached to the edge of the annular rotating knife disc for adjusting the cutting direction of the slitting knives.
9. The film slitting device according to claim 1, wherein the winding member includes a driving member and a receiving roller, the driving member is in transmission connection with the receiving roller and is used for rotating the receiving roller, and the sheet-shaped film is wound around the receiving roller.
10. A slitting method using the film slitting device according to any one of claims 1 to 9, comprising:
the adjusting device comprises: adjusting the cutting direction of the cutter to a preset inclination angle, adjusting the rotating speed of the annular rotary cutter disc to a preset speed, and adjusting the rotating speed of the winding piece to a preset speed;
feeding: coating the cylindrical film to be cut on the annular rotary cutter disc, and manually pulling the cut sheet-shaped film to a receiving roller;
slitting: and opening the annular rotary cutter disc to enable the annular rotary cutter disc to rotate and cut at a preset speed, and opening the winding piece to enable the winding piece to rotate and wind the film at the preset speed.
CN201911049729.7A 2019-10-31 2019-10-31 Film slitting device and slitting method Active CN112744631B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911049729.7A CN112744631B (en) 2019-10-31 2019-10-31 Film slitting device and slitting method

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Application Number Priority Date Filing Date Title
CN201911049729.7A CN112744631B (en) 2019-10-31 2019-10-31 Film slitting device and slitting method

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CN112744631B true CN112744631B (en) 2023-01-17

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CN113437434B (en) * 2021-05-13 2023-04-07 西安淘客电子科技有限公司 Lithium battery diaphragm stretching device for layered experiments

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CN100532086C (en) * 2007-09-19 2009-08-26 甘国工 One-way stretching film compounded multidirectional drag-resisting avulsion-resisting film and method for producing the same
GB0814308D0 (en) * 2008-08-05 2008-09-10 Rasmussen O B Film material exhibiting textile properties, and method and apparatus for its manufacture
CN101875238A (en) * 2010-05-31 2010-11-03 徐建学 Spiral cutting and rolling composite structure on single-film production line
CN202953601U (en) * 2012-10-19 2013-05-29 上海优珀斯材料科技有限公司 Device for slantly cutting multiple films simultaneously
JP2014172329A (en) * 2013-03-11 2014-09-22 Dainippon Printing Co Ltd Cutting device for cylindrical film
CN105818179A (en) * 2016-03-16 2016-08-03 吕红芝 Tubular film rotary cutting device and cutting method

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