CN213971453U - Packaging film is with non-straight line side cut device - Google Patents
Packaging film is with non-straight line side cut device Download PDFInfo
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- CN213971453U CN213971453U CN202022496951.6U CN202022496951U CN213971453U CN 213971453 U CN213971453 U CN 213971453U CN 202022496951 U CN202022496951 U CN 202022496951U CN 213971453 U CN213971453 U CN 213971453U
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Abstract
The utility model discloses a non-linear edge cutting device for packaging films, which comprises a conveying rack, a traction roller and a winding drum; two sides of the conveying rack between the two traction rollers at the left end are respectively provided with a nonlinear trimming mechanism; the non-linear trimming mechanism comprises a trimming base, a reciprocating block, a trimming bracket and a trimming blade; the two ends of the trimming base are provided with trimming mounting plates, and a trimming guide shaft and a trimming adjusting stud are arranged between the two trimming mounting plates; the reciprocating block is provided with a trimming guide hole in sliding fit with the trimming guide shaft and a trimming threaded hole in threaded fit with the trimming adjusting stud; the outer end of the trimming adjusting stud extends out of the corresponding trimming mounting plate and then is connected with the output end of the trimming forward and reverse rotating motor. The utility model discloses the reciprocating motion of well side cut blade can realize cutting edge to packaging film's non-straight line, and the side that newly-cut goes out is non-linear wavy or cockscomb structure, and the newly-cut edge curling department of cutting edge is poor with other position department superimposed thickness when having greatly reduced the rolling.
Description
Technical Field
The utility model belongs to the technical field of packaging film equipment, concretely relates to packaging film is with non-straight line side cut device.
Background
In the production process of the packaging film, the width of the film produced in the initial stage is wide, and before subsequent winding and rolling, the two side materials in the width direction of the packaging film need to be cut and trimmed according to actual requirements, so that the width of the packaging film meets the expected requirement. Under the influence of film tension, film surface friction coefficient and the like, the film thickness of the side edge cut by the cutter is slightly increased compared with the film thickness of other positions, and a slight thickness difference exists.
At present, when the edge of a packaging film is cut, a newly cut side edge is generally in a straight line, and when the packaging film is wound and wound subsequently, the newly cut side edge is wound and stacked layer by layer on a winding roller. Although there is a slight difference in thickness between the film thickness of the newly cut side and the film thickness at other positions, the newly cut trimmed layers are stacked upon winding, thereby forming a stack of several differences in thickness.
The superposition of the layer thickness differences finally causes the unevenness of the surface of the finished film roll, and simultaneously causes the physical property change of some positions of the packaging film during winding and winding, thereby affecting the quality of the finished film.
Therefore, it is necessary to design a non-linear edge cutting device for packaging film, which can reduce the thickness difference between the new edge cutting and curling position and other positions during rolling,
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects of the prior art and providing a non-linear edge cutting device for a packaging film.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a non-linear edge cutting device for packaging films comprises a conveying rack; a plurality of traction rollers with parallel central axes are rotatably arranged on the conveying rack, and a winding drum is rotatably arranged at the right end of the conveying rack;
two sides of the conveying rack between the two traction rollers at the left end are respectively provided with a nonlinear trimming mechanism;
the non-linear trimming mechanism comprises a trimming base connected with the conveying rack and a reciprocating block positioned on the trimming base; the upper part of the reciprocating block is fixedly provided with a trimming bracket in a U-shaped structure, and the upper part of the trimming bracket is provided with a trimming blade;
the two ends of the trimming base are provided with trimming mounting plates, and a trimming guide shaft and a trimming adjusting stud, the central axis of which extends along the width direction of the packaging film, are arranged between the two trimming mounting plates; the trimming adjusting stud is rotatably connected with the trimming mounting plate;
the reciprocating block is provided with a trimming guide hole in sliding fit with the trimming guide shaft and a trimming threaded hole in threaded fit with the trimming adjusting stud;
the outer end of the trimming adjusting stud extends out of the corresponding trimming mounting plate and then is connected with the output end of the trimming forward and reverse rotating motor.
Preferably, a rotating shaft is vertically and fixedly arranged between the two side plates at the upper part of the trimming bracket; the edge cutting blade is rotatably connected with the rotating shaft;
the reciprocating block is provided with an adjusting cylinder for controlling the trimming blade to rotate around the rotating shaft;
the end part of the adjusting cylinder is hinged with the reciprocating block, and the end part of a piston rod of the adjusting cylinder is hinged with the end part of the trimming blade.
Preferably, two side edges of the conveying rack are provided with square mounting holes; the bottom surface of the trimming base is fixedly connected with the bottom surface of the corresponding square mounting hole.
Preferably, two sides of the conveying rack at the left end of the winding drum are respectively provided with a pinch roller mechanism;
the pinch roller mechanism comprises a base connected with the conveying rack and a pinch roller assembly connected with the base;
mounting plates are arranged at two ends of the base, and a width guide shaft and a width adjusting stud, of which the central axis extends along the width direction of the packaging film, are arranged between the two mounting plates; the width adjusting stud is rotatably connected with the mounting plate;
the pinch roller assembly comprises a pinch roller frame and two conveying pinch rollers which are arranged on the pinch roller frame and distributed up and down, and the conveying pinch rollers are rotatably connected with the pinch roller frame; the conveying pinch roller is connected with the pinch roller driving mechanism;
the lower part of the pressure wheel frame is provided with a width guide hole in sliding fit with the width guide shaft and a width threaded hole in threaded fit with the width adjusting stud.
Preferably, the outer end of the width adjusting stud extends out of the corresponding mounting plate and then is connected with the width adjusting hand wheel.
Preferably, the pinch roller driving mechanism comprises a pinch roller driving motor and two pinch roller driving gears which are in meshed connection;
the two pinch roller driving gears are respectively and fixedly connected with the two conveying pinch rollers in a coaxial way; the pinch roller driving motor is coaxially and fixedly connected with one of the pinch roller driving gears.
Preferably, the conveying rack comprises two rack vertical plates which are distributed in parallel along the width direction of the packaging film; the vertical plate of the rack is provided with a through adjusting through hole, and adjusting seats are arranged at two ends of the adjusting through hole on the inner side and the outer side of the vertical plate of the rack;
a traction guide shaft with a central axis extending along the traction direction of the packaging film is arranged between the two adjusting seats on the inner side of the stand vertical plate of the stand;
a traction adjusting stud with a central axis extending along the traction direction of the packaging film is arranged between the two adjusting seats on the outer side of the stand vertical plate of the stand; two ends of the traction adjusting stud are rotatably connected with corresponding adjusting seats;
the base is provided with a traction guide hole in sliding fit with the traction guide shaft on the corresponding stand plate of the rack and a traction threaded hole in threaded fit with the traction adjusting stud.
Preferably, one end of the traction adjusting stud extends out of the corresponding adjusting seat and then is connected with the traction adjusting hand wheel.
The utility model has the advantages that:
(1) the utility model discloses packaging film is with non-linear side cut device under the combined action of the slip spacing cooperation between side cut guiding hole and the side cut guiding axle, the screw-thread fit of side cut screw hole and side cut adjusting stud, when side cut positive and negative motor carries out the positive and negative rotation in turn, can realize the reciprocal piece along the small reciprocating motion of packaging film width direction, and then drive the side cut blade and carry out small reciprocating motion along packaging film width direction; when the packaging film is conveyed forwards under the driving of the traction roller, the reciprocating motion of the edge cutting blade can realize the nonlinear edge cutting of the packaging film, and the newly cut side edge is in a nonlinear wavy or zigzag shape; when the winding drum is wound and wound, the wavy or zigzag side edges are stacked alternately and dispersedly, and compared with the existing linear side edge cutting method, the non-linear side edge cutting method has the advantages that the thickness difference between the newly cut edge and other positions is greatly reduced.
(2) The utility model discloses the non-linear side cut device for packaging film can realize the motion of pinch roller subassembly along the packaging film width direction when rotating width adjusting stud under the combined action of the sliding spacing fit between width guiding hole and width guiding axle, the screw-thread fit of width screw hole and width adjusting stud; the pinch roller assemblies on the two pinch roller mechanisms can move along the width direction of the packaging film, so that the distance between the pinch roller assemblies of the two pinch roller mechanisms along the width direction of the packaging film can be adjusted, and the pinch roller mechanisms can be suitable for conveying operation of the packaging films with different widths.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic perspective view of the non-linear edge cutting device for packaging film of the present invention;
FIG. 2 is a right side view showing the structure of the non-linear edge slitting device for a packaging film according to the present invention;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic perspective view of the non-linear trimming mechanism of the present invention;
FIG. 5 is a schematic perspective view of the structure of the pinch roller mechanism of the present invention;
FIG. 6 is a schematic perspective view of the middle pressure wheel driving mechanism of the present invention;
FIG. 7 is a schematic view of the non-linear edge trimmer for packaging film of the present invention;
wherein:
1-a conveying frame, 11-a frame vertical plate, 12-an adjusting through hole, 13-an adjusting seat, 14-a traction guide shaft, 15-a traction adjusting stud and 151-a traction adjusting hand wheel;
2-traction roller, 3-winding drum;
4-pinch roller mechanism, 41-base, 411-mounting plate, 412-width guide shaft, 413-width adjusting stud, 414-width adjusting hand wheel, 415-traction guide hole, 416-traction threaded hole, 42-pinch roller frame, 43-conveying pinch roller, 44-pinch roller driving motor and 45-pinch roller driving gear;
5-a non-linear trimming mechanism, 51-a trimming base, 511-a trimming mounting plate, 512-a trimming guide shaft, 513-a trimming adjusting stud, 52-a reciprocating block, 53-a trimming bracket, 531-a rotating shaft, 54-a trimming blade, 55-an adjusting cylinder and 56-a trimming forward and backward rotating motor.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the present invention, the terms such as "upper", "lower", "bottom", "top" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, and the relationship term determined only for the convenience of describing the structural relationship of each component or element of the present invention is not particularly referred to any component or element of the present invention, and the limitation of the present invention cannot be understood.
In the present invention, terms such as "connected" and "connected" should be understood in a broad sense, and may be either fixedly connected or integrally connected or detachably connected; may be directly connected or indirectly connected through an intermediate. The meaning of the above terms in the present invention can be determined according to specific situations by persons skilled in the art, and should not be construed as limiting the present invention.
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1 to 3, a non-linear edge slitting device for a packaging film includes a conveyor frame 1; a plurality of traction rollers 2 with parallel central axes are rotatably arranged on the conveying rack 1, and a winding drum 3 is rotatably arranged at the right end of the conveying rack 1; the rotation driving of each traction roller 2 and the winding drum 3 can be realized by adopting the prior art, and specifically, each traction roller 2 is connected with a traction driving mechanism which is a traction driving motor, and the traction driving motor drives each traction roller 2 to rotate through a belt or a chain; the winding drum 3 is connected with a winding driving motor, and the winding driving motor directly controls the rotation of the winding drum 3;
two sides of the conveying rack 1 between the two traction rollers 2 at the left end are respectively provided with a nonlinear trimming mechanism 5;
as shown in fig. 4, the non-linear trimming mechanism 5 includes a trimming base 51 for connecting with the conveyor frame 1 and a reciprocating block 52 on the trimming base 51; the upper part of the reciprocating block 52 is fixedly provided with a trimming bracket 53 in a U-shaped structure, and the upper part of the trimming bracket 53 is provided with a trimming blade 54;
the two ends of the trimming base 51 are provided with trimming mounting plates 511, and a trimming guide shaft 512 and a trimming adjusting stud 513, the central axis of which extends along the width direction of the packaging film, are arranged between the two trimming mounting plates 511; the trimming adjusting stud 513 is rotatably connected with the trimming mounting plate 511;
the reciprocating block 52 is provided with a trimming guide hole in sliding fit with the trimming guide shaft 512 and a trimming threaded hole in threaded fit with the trimming adjusting stud 513;
the outer end of the trimming adjusting stud 513 extends out of the corresponding trimming mounting plate 511 and then is connected with the output end of the trimming forward and reverse rotating motor 56.
Under the combined action of sliding limit fit between the trimming guide hole and the trimming guide shaft 512 and thread fit between the trimming threaded hole and the trimming adjusting stud 513, when the trimming forward and reverse rotation motor 56 performs alternate forward and reverse rotation, the reciprocating block 52 can perform micro reciprocating motion along the width direction of the packaging film, and further the trimming blade 54 is driven to perform micro reciprocating motion along the width direction of the packaging film; when the packaging film is conveyed forwards under the driving of the traction roller 2, the reciprocating motion of the edge cutting blade 54 can realize the non-linear edge cutting of the packaging film, and the newly cut side edge is in a non-linear wave shape or a zigzag shape; when winding and rolling are carried out on the winding drum 3, the alternate dispersed superposition of the cut edges is realized when the wavy or zigzag side edges are stacked, and compared with the superposition thickness difference of the edge curling position and other positions caused by the existing linear cut edge, the nonlinear cut edge greatly reduces the superposition thickness difference of the new cut edge curling position and other positions during winding.
Preferably, a rotating shaft 531 is vertically and fixedly arranged between the two side plates at the upper part of the trimming bracket 53; the trimming blade 54 is rotatably connected with the rotating shaft 531;
the reciprocating block 52 is provided with an adjusting cylinder 55 for controlling the trimming blade 54 to rotate around a rotating shaft 531;
the end of the adjusting cylinder 55 is hinged with the reciprocating block 52, and the end of the piston rod of the adjusting cylinder 55 is hinged with the end of the trimming blade 54.
Preferably, two side edges of the conveying rack 1 are provided with square mounting holes; the bottom surface of the trimming base 51 is fixedly connected with the bottom surface of the corresponding square mounting hole.
Example 2:
on the basis of the embodiment 1, two sides of the conveying rack 1 at the left end of the winding drum 3 are respectively provided with a pinch roller mechanism 4;
as shown in fig. 5, the pinch roller mechanism 4 comprises a base 41 connected with the conveyor frame 1 and a pinch roller assembly connected with the base 41;
mounting plates 411 are arranged at two ends of the base 41, and a width guide shaft 412 and a width adjusting stud 413, of which the central axis extends along the width direction of the packaging film, are arranged between the two mounting plates 411; the width adjusting stud 413 is rotatably connected with the mounting plate 411;
the pressing wheel assembly comprises a pressing wheel frame 42 and two conveying pressing wheels 43 which are arranged on the pressing wheel frame 42 and distributed up and down, and the conveying pressing wheels 43 are rotatably connected with the pressing wheel frame 42; the conveying pinch roller 43 is connected with a pinch roller driving mechanism;
the lower portion of the pressure wheel frame 42 is provided with a width guide hole in sliding fit with the width guide shaft 412 and a width threaded hole in threaded fit with the width adjustment stud 413.
The pinch roller mechanism 4 plays the effect of drawing and carrying the packaging film on the one hand, plays certain effect of compressing tightly to the width both sides of packaging film on the other hand, can guarantee the exhibition flat of packaging film width direction, helps the quality of follow-up rolling.
Under the combined action of sliding limit fit between the width guide hole and the width guide shaft 412 and the threaded fit between the width threaded hole and the width adjusting stud 413, when the width adjusting stud 413 is rotated, the movement of the pinch roller assembly along the width direction of the packaging film can be realized; the pinch roller assemblies on the two pinch roller mechanisms 4 can move along the width direction of the packaging film, so that the distance between the pinch roller assemblies of the two pinch roller mechanisms 4 along the width direction of the packaging film can be adjusted, and the pinch roller mechanism can be suitable for conveying operation of the packaging films with different widths.
Preferably, the outer end of the width adjusting stud 413 extends out of the corresponding mounting plate 411 and is connected with a width adjusting handwheel 414, so as to facilitate the rotation adjustment of the width adjusting stud 413.
Preferably, as shown in fig. 6, the pressing wheel driving mechanism comprises a pressing wheel driving motor 44 and two pressing wheel driving gears 45 which are in meshed connection;
the two pinch roller driving gears 45 are respectively and fixedly connected with the two conveying pinch rollers 43 in a coaxial manner; the pinch roller driving motor 44 is coaxially and fixedly connected with one of the pinch roller driving gears 45.
Preferably, as shown in fig. 1, the conveyor frame 1 includes two frame vertical plates 11 distributed in parallel along the width direction of the packaging film; a through adjusting through hole 12 is formed in the stand upright plate 11, and adjusting seats 13 are arranged at two ends of the adjusting through hole 12 on the inner side and the outer side of the stand upright plate 11;
a traction guide shaft 14 with a central axis extending along the traction direction of the packaging film is arranged between the two adjusting seats 13 on the inner side of the stand upright plate 11;
a traction adjusting stud 15 with a central axis extending along the traction direction of the packaging film is arranged between the two adjusting seats 13 on the outer side of the stand vertical plate 11; two ends of the traction adjusting stud 15 are rotatably connected with the corresponding adjusting seats 13;
the base 41 is provided with a traction guide hole 415 which is in sliding fit with the traction guide shaft 14 on the corresponding stand upright plate 11 and a traction threaded hole 416 which is in threaded fit with the traction adjusting stud 15.
Under the combined action of the sliding limit fit between the traction guide hole 415 and the traction guide shaft 14 and the thread fit between the traction threaded hole 416 and the traction adjusting stud 15, when the traction adjusting stud 15 is rotated, the pressing wheel mechanism 4 can move along the traction direction of the packaging film; namely, the two pinch roller mechanisms 4 can move along the traction direction of the packaging film according to actual needs so as to adjust the pinch roller mechanisms 4 to proper positions.
Preferably, one end of the draw adjusting stud 15 extends out of the corresponding adjusting seat 13 and then is connected with the draw adjusting hand wheel 151, so that the draw adjusting stud 15 can be adjusted in a rotating manner.
When the non-linear edge cutting device for the packaging film, which is described in the embodiment 2, is used, as shown in fig. 7, the packaging film is dragged, guided and conveyed along the traction roller 2, after the non-linear edge cutting is performed by the non-linear edge cutting mechanisms 5 at the two sides of the conveyor frame 1, the middle packaging film is continuously conveyed backwards, and the two sides of the width of the packaging film respectively pass through the pressing wheel mechanisms 4 at the two sides of the conveyor frame 1 during the non-linear edge cutting, so as to ensure that the two sides of the width of the packaging film are flattened; and finally, winding and coiling are carried out through the coiling drum 3. And the two cut edges fall into a containing box below the conveying rack 1 for subsequent containing treatment.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the present invention, and those skilled in the art should understand that, based on the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without inventive labor are still within the scope of the present invention.
Claims (8)
1. A non-linear edge cutting device for packaging films is characterized by comprising a conveying rack; a plurality of traction rollers with parallel central axes are rotatably arranged on the conveying rack, and a winding drum is rotatably arranged at the right end of the conveying rack;
two sides of the conveying rack between the two traction rollers at the left end are respectively provided with a nonlinear trimming mechanism;
the non-linear trimming mechanism comprises a trimming base connected with the conveying rack and a reciprocating block positioned on the trimming base; the upper part of the reciprocating block is fixedly provided with a trimming bracket in a U-shaped structure, and the upper part of the trimming bracket is provided with a trimming blade;
the two ends of the trimming base are provided with trimming mounting plates, and a trimming guide shaft and a trimming adjusting stud, the central axis of which extends along the width direction of the packaging film, are arranged between the two trimming mounting plates; the trimming adjusting stud is rotatably connected with the trimming mounting plate;
the reciprocating block is provided with a trimming guide hole in sliding fit with the trimming guide shaft and a trimming threaded hole in threaded fit with the trimming adjusting stud;
the outer end of the trimming adjusting stud extends out of the corresponding trimming mounting plate and then is connected with the output end of the trimming forward and reverse rotating motor.
2. The non-linear trimming apparatus for packaging film as claimed in claim 1, wherein a rotary shaft is vertically fixed between both side plates of the upper portion of the trimming bracket; the edge cutting blade is rotatably connected with the rotating shaft;
the reciprocating block is provided with an adjusting cylinder for controlling the trimming blade to rotate around the rotating shaft;
the end part of the adjusting cylinder is hinged with the reciprocating block, and the end part of a piston rod of the adjusting cylinder is hinged with the end part of the trimming blade.
3. The non-linear edge slitting device for the packaging film as set forth in claim 1, wherein both side edges of the conveyor frame are provided with square mounting holes; the bottom surface of the trimming base is fixedly connected with the bottom surface of the corresponding square mounting hole.
4. The non-linear trimming apparatus for packaging film as claimed in claim 1, wherein a pinch roller mechanism is provided on each of both sides of the conveyor frame at the left end of the take-up drum;
the pinch roller mechanism comprises a base connected with the conveying rack and a pinch roller assembly connected with the base;
mounting plates are arranged at two ends of the base, and a width guide shaft and a width adjusting stud, of which the central axis extends along the width direction of the packaging film, are arranged between the two mounting plates; the width adjusting stud is rotatably connected with the mounting plate;
the pinch roller assembly comprises a pinch roller frame and two conveying pinch rollers which are arranged on the pinch roller frame and distributed up and down, and the conveying pinch rollers are rotatably connected with the pinch roller frame; the conveying pinch roller is connected with the pinch roller driving mechanism;
the lower part of the pressure wheel frame is provided with a width guide hole in sliding fit with the width guide shaft and a width threaded hole in threaded fit with the width adjusting stud.
5. The non-linear trimming apparatus for packaging films as claimed in claim 4, wherein the outer ends of the width adjusting studs extend beyond the respective mounting plates and are connected to the width adjusting handwheel.
6. The apparatus for cutting edges of packaging film in a non-linear manner as claimed in claim 4, wherein said pinch roller driving mechanism comprises a pinch roller driving motor and two pinch roller driving gears which are engaged with each other;
the two pinch roller driving gears are respectively and fixedly connected with the two conveying pinch rollers in a coaxial way; the pinch roller driving motor is coaxially and fixedly connected with one of the pinch roller driving gears.
7. The apparatus for cutting edges of packaging film in a non-linear manner as set forth in claim 4, wherein said conveyor frame comprises two frame vertical plates disposed in parallel in the width direction of the packaging film; the vertical plate of the rack is provided with a through adjusting through hole, and adjusting seats are arranged at two ends of the adjusting through hole on the inner side and the outer side of the vertical plate of the rack;
a traction guide shaft with a central axis extending along the traction direction of the packaging film is arranged between the two adjusting seats on the inner side of the stand vertical plate of the stand;
a traction adjusting stud with a central axis extending along the traction direction of the packaging film is arranged between the two adjusting seats on the outer side of the stand vertical plate of the stand; two ends of the traction adjusting stud are rotatably connected with corresponding adjusting seats;
the base is provided with a traction guide hole in sliding fit with the traction guide shaft on the corresponding stand plate of the rack and a traction threaded hole in threaded fit with the traction adjusting stud.
8. The apparatus for cutting edges of packaging film in non-linear manner as claimed in claim 7, wherein one end of said pull adjusting stud is connected to a pull adjusting hand wheel after extending out of the corresponding adjusting seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022496951.6U CN213971453U (en) | 2020-11-03 | 2020-11-03 | Packaging film is with non-straight line side cut device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022496951.6U CN213971453U (en) | 2020-11-03 | 2020-11-03 | Packaging film is with non-straight line side cut device |
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| Publication Number | Publication Date |
|---|---|
| CN213971453U true CN213971453U (en) | 2021-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022496951.6U Active CN213971453U (en) | 2020-11-03 | 2020-11-03 | Packaging film is with non-straight line side cut device |
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| Country | Link |
|---|---|
| CN (1) | CN213971453U (en) |
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- 2020-11-03 CN CN202022496951.6U patent/CN213971453U/en active Active
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