CN113478541B - Online cutting device for edge of film and application method of online cutting device - Google Patents
Online cutting device for edge of film and application method of online cutting device Download PDFInfo
- Publication number
- CN113478541B CN113478541B CN202110766266.7A CN202110766266A CN113478541B CN 113478541 B CN113478541 B CN 113478541B CN 202110766266 A CN202110766266 A CN 202110766266A CN 113478541 B CN113478541 B CN 113478541B
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- cutter
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- air cylinder
- cutting device
- rest
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- 238000005520 cutting process Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000003825 pressing Methods 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims 1
- 238000004064 recycling Methods 0.000 claims 1
- 238000005096 rolling process Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 238000009434 installation Methods 0.000 description 7
- 238000009966 trimming Methods 0.000 description 6
- 230000007246 mechanism Effects 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
- B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
- B26D1/08—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
- B26D1/09—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type with a plurality of cutting members
- B26D1/095—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type with a plurality of cutting members for thin material, e.g. for sheets, strips or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
- B26D7/2628—Means for adjusting the position of the cutting member
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Making Paper Articles (AREA)
Abstract
The invention discloses an online cutting device for a film edge, which comprises two sets of transverse pull cutter units, wherein the two sets of transverse pull cutter units are respectively positioned at the left side and the right side of a film clamped by a transverse zipper clamp, and each transverse pull cutter unit comprises an air cylinder, a mounting base, a rotating shaft, a rotating base, a limit bolt, a duplex air cylinder, a cutter rest pressing plate, a cutter and a cutter rest; the air cylinder is positioned below the mounting base and is connected with the mounting base and the rotating base in a hinged mode respectively; the mounting base is connected with the rotating base through the rotating shaft, and the rotating base is fixedly connected with the duplex cylinder and the limit bolt through bolts; the cutter rest is fixed above the duplex air cylinder through bolts, and the cutter is fixed on the cutter rest through the cutter rest pressing plate. In addition, the application method of the device is disclosed, the film is cut rapidly by utilizing an electromechanical structure, and the production efficiency is improved on the premise of ensuring the safety.
Description
Technical Field
The invention relates to a film pulling device, in particular to an online cutting device for a film edge and a use method thereof.
Background
The transverse drawing machine (TDO) has the main functions of heating and transversely drawing the film sheet, so that the film thickness is uniform, and the mechanical property is stable. The transverse drawing machine is provided with two special chains which rotate endlessly, clamps are arranged on the chains, can tightly clamp two edges of a sheet, are supported on a guide rail with variable width, and synchronously run by means of the same direction of the two chain clamps. The sheet is first preheated in a preheating section with a slight increase, transversely stretched in a stretching zone with a large expansion angle, and then heat treated in a parallel heat treatment zone with a shrink to shape and relax the film. And finally, cooling in a parallel cooling area to finish the transverse stretching work of the film.
The existing online film edge cutting device is generally designed at the entrance of a tractor to cut the thick edge of the film entering the tractor in time; however, in the cooling section of the transverse drawing machine, the film near the chain clamping opening is difficult to be effectively cooled, the cooling effect of the middle part of the film width is good, the film at the edge of the film width near the chain clamping opening is still in a high-temperature state, and the stress and the surface tension of a film molecular chain caused by the uneven whole cold and hot of the film exist, so that the film is curled, wrinkled and the like before entering traction, and the film quality is greatly influenced.
In addition, when the blade on the cutter device is excessively worn due to long service time, the cutter needs to be replaced, and the existing blade replacement method generally stops the film production line, and restarts the production line after replacing the blade, so that the continuous production of the film production line is not facilitated.
Disclosure of Invention
In order to overcome the defects in the prior art, the technical scheme of the invention is as follows: the online film edge cutting device comprises two sets of transverse pulling cutter units, wherein the two sets of transverse pulling cutter units are respectively positioned at the left side and the right side of a film 10 clamped by a transverse zipper clamp 11, and each transverse pulling cutter unit comprises a cylinder 1, a mounting base 2, a rotating shaft 3, a rotating base 4, a limit bolt 5, a duplex cylinder 6, a cutter rest pressing plate 7, a cutter 8 and a cutter rest 9; the air cylinder 1 is positioned below the mounting base 2, and the air cylinder 1 is respectively connected with the mounting base 2 and the rotating base 4 in a hinged manner; the mounting base 2 is connected with the rotating base 4 through the rotating shaft 3, and the rotating base 4 is fixedly connected with the duplex air cylinder 6 and the limit bolt 5 through bolts; the cutter rest 9 is fixed above the duplex air cylinder 6 through bolts, and the cutter 8 is fixed on the cutter rest 9 through the cutter rest pressing plate 7.
Preferably, the rotation shaft 3 and the rotation base 4 are installed by adopting clearance fit, the range of the clearance is between 0.10mm and 0.20mm, the too tight fit easily causes the blocking phenomenon when the air cylinder 1 acts, and the too loose fit easily causes inaccurate cutter positioning by the movement of the two.
Preferably, the bolt hole of waist type groove structure is arranged above the mounting base 2, and the bolt hole is matched with the track of the transverse zipper clamp 11, so that the width of the trimming amount of the film can be adjusted, the too small trimming amount easily causes the risk of collision when the cutter is too close to the moving zipper clamp, the too large trimming amount easily causes serious waste, the yield of the finished product is affected, and the yield of the finished product of a company is further affected.
Preferably, a groove-shaped structure with the same width as the cutter 8 is arranged in the cutter rest pressing plate 7, the groove-shaped structure has the function of positioning a cutter groove, the cutter is prevented from being loosened due to stress in the process of cutting the film to form a skew phenomenon, the cutter at the position needs to always form a vertical angle with the film, the edge cutting of the angle film is very flat, in addition, the resistance abrasion to the cutter is minimum, and the service life of the cutter can be prolonged.
Preferably, two groove-shaped structures are arranged in the tool rest pressing plate 7, each groove-shaped structure is correspondingly provided with one cutter 8, the double-cutter design ensures that when one cutter is worn, the cutter can be replaced on line, the film production line does not need to be restarted after being stopped, and longer working time and higher working efficiency of the device are ensured.
Preferably, the length of the limit bolt 5 is adjustable, the angle of the swivel base 4 to the mounting 2 is adjusted by adjusting the length of the limit bolt, and the vertical angular relationship of the cutter 8 to the film being cut is ensured by a pendant tool during the stoppage of the production line.
Preferably, membrane rupture sensor signals are arranged in the air cylinder 1 and the duplex air cylinder 6, and the membrane rupture sensor signals are communicated with each other; when the film breaking sensor in the horizontal drawing box detects that the horizontal drawing film breaking sensor can send a film breaking signal to the control center of the air cylinder, the air cylinder 1 of the cutter mechanism and the double air cylinder at the production position immediately retract to the non-working position at the moment, and the safety of the cutter mechanism and the chain is effectively protected.
The invention also provides a using method of the film edge online cutting device, which comprises the following steps:
step 1, clamping a film 10 by a horizontal zipper clamp 11, stretching, starting the cylinder 1 through the horizontal zipper cutter unit, and pushing the rotation shaft 3 to rotate so that the rotation base 4 is perpendicular to the installation base 2;
step 2, 3 seconds after the step 1 is finished, starting the duplex cylinder 6, ejecting the knife rest 9 to act upwards, and at the moment, the cutter 8 punctures the film 10 and cuts the film 10;
and 3, after the step 2 is finished, the edges of the film 10 cut by the transverse zipper cutter unit are clamped by the transverse zipper clamps 11 and then transported to an outlet area, crushed and recycled and granulated by a rim charge crusher, and the rest middle part of the film 10 is cooled and then rolled and packaged to obtain a finished product.
Compared with the prior art, the invention has the following beneficial effects:
1. the cutter rest is fixed on the duplex cylinder, so that the rigidity and stability of the cutter rest are guaranteed, and the cutter cannot shake.
2. The special knife groove is formed in the knife rest pressing plate, so that the double knives can be firmly fixed, the knives are not easy to move in a stringing manner when cutting, and the production stability is ensured. Meanwhile, the double-cutter design ensures that when one cutter is worn, the cutter can be replaced on line, and longer working time is ensured.
3. The cutter device is connected with the rupture membrane detection and control system, once the rupture membrane can be automatically bounced off, the online cutting device enters a non-working position state, and the safety of personnel and equipment is ensured.
4. In the box space of narrow and small and high temperature (80 ℃) because personnel can not enter into the box under the production condition and implement visual and field control, utilize electromechanical structure to realize quick cutting, realized production efficiency's promotion under the prerequisite of guaranteeing the safety.
Drawings
FIG. 1 is a schematic perspective view of a drag cutter unit;
FIG. 2 is a schematic view of a film edge in-line cutting device in a non-operative position;
FIG. 3 is a schematic view of the working position of the film edge on-line cutting device;
FIG. 4 is a schematic view of a spin base;
FIG. 5 is a schematic view of a tool holder platen;
FIG. 6 is a schematic view of a cutter;
fig. 7 is a schematic view of a tool holder.
In the figure, 1, a cylinder; 2. a mounting base; 3. a rotation shaft; 4. rotating the base; 5. a limit bolt; 6. a duplex cylinder; 7. a tool rest pressing plate; 8. a cutter; 9. a tool holder; 10. a film; 11. and a horizontal zipper clip.
Detailed Description
In order that the invention may be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments that are illustrated below. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
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 invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1
The invention discloses an online film edge cutting device, which comprises two sets of transverse pull cutter units, wherein the two sets of transverse pull cutter units are respectively positioned at the left side and the right side of a film 10 clamped by a transverse zipper clamp 11, and each transverse pull cutter unit comprises an air cylinder 1, a mounting base 2, a rotating shaft 3, a rotating base 4, a limit bolt 5, a duplex air cylinder 6, a cutter rest pressing plate 7, a cutter 8 and a cutter rest 9; the air cylinder 1 is positioned below the mounting base 2, and the air cylinder 1 is respectively connected with the mounting base 2 and the rotating base 4 in a hinged manner; the mounting base 2 is connected with the rotating base 4 through the rotating shaft 3, and the rotating base 4 is fixedly connected with the duplex air cylinder 6 and the limit bolt 5 through bolts; the cutter rest 9 is fixed above the duplex air cylinder 6 through bolts, and the cutter 8 is fixed on the cutter rest 9 through the cutter rest pressing plate 7.
The installation of rotation axis 3 and swivel base 4 adopts clearance fit, the clearance is 0.15mm, and too tight cooperation easily causes the card phenomenon to die when cylinder 1 acts, and too loose cooperation both easily cluster moves and causes the cutter to fix a position inaccurately.
The utility model discloses a film production device, including installation base 2, horizontal zip fastener clamp 11, the installation base 2 top is equipped with the bolt hole of waist type groove structure, with the track cooperation installation of horizontal zip fastener clamp 11 can adjust the trimming volume width of film like this, and too little trimming volume causes the chain clamp that the cutter is apart from the motion too near to have the risk of collision easily, and too big trimming volume causes extravagant seriously easily, influences the yield of finished product, and then influences the finished product output value of company.
Two groove-shaped structures with the same width as the cutters 8 are arranged in the cutter rest pressing plate 7, each groove-shaped structure is correspondingly provided with one cutter 8, each groove-shaped structure has the function of positioning a cutter groove, so that the cutter is prevented from being stressed and loosened to generate a skew phenomenon in the process of cutting a film, the cutter at the position needs to always form a vertical angle with the film, the edge cutting of the angle film is very flat, in addition, the resistance abrasion of the cutter is minimum, and the service life of the cutter can be prolonged; the design of the double cutters ensures that when one cutter is worn, the cutter can be replaced on line, the film production line does not need to be restarted after being stopped, and the longer working time and the higher working efficiency of the device are ensured.
The length of the limit bolt 5 is adjustable, the angle between the rotary base 4 and the installation 2 is adjusted by adjusting the length of the limit bolt, and the vertical angle relation between the cutter 8 and the cut film is ensured by a suspending tool during the stop of the production line.
The cylinder 1 and the duplex cylinder 6 are internally provided with rupture sensor signals which are communicated with each other; when the film breaking sensor in the horizontal drawing box detects that the horizontal drawing film breaking sensor can send a film breaking signal to the control center of the air cylinder, the air cylinder 1 of the cutter mechanism and the double air cylinder at the production position immediately retract to the non-working position at the moment, and the safety of the cutter mechanism and the chain is effectively protected.
The method for carrying out the online cutting device of the edge part of the film by using the embodiment comprises the following steps:
step 1, clamping a film 10 by a horizontal zipper clamp 11, stretching, starting the cylinder 1 through the horizontal zipper cutter unit, and pushing the rotation shaft 3 to rotate so that the rotation base 4 is perpendicular to the installation base 2;
step 2, 3 seconds after the step 1 is finished, starting the duplex cylinder 6, ejecting the knife rest 9 to act upwards, and at the moment, the cutter 8 punctures the film 10 and cuts the film 10;
and 3, after the step 2 is finished, the edges of the film 10 cut by the transverse zipper cutter unit are clamped by the transverse zipper clamps 11 and then transported to an outlet area, crushed and recycled and granulated by a rim charge crusher, and the rest middle part of the film 10 is cooled and then rolled and packaged to obtain a finished product.
The embodiment utilizes the electromechanical structure to realize quick cutting, and realizes the improvement of production efficiency on the premise of ensuring safety.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The online film edge cutting device comprises two sets of transverse pulling cutter units which are respectively positioned at the left side and the right side of a film (10) clamped by a transverse zipper clamp (11), and is characterized by comprising an air cylinder (1), a mounting base (2), a rotating shaft (3), a rotating base (4), a limit bolt (5), a duplex air cylinder (6), a tool rest pressing plate (7), a cutter (8) and a tool rest (9); the air cylinder (1) is positioned below the mounting base (2), and the air cylinder (1) is connected with the mounting base (2) and the rotating base (4) in a hinging mode respectively; the mounting base (2) is connected with the rotating base (4) through the rotating shaft (3), and the rotating base (4) is fixedly connected with the duplex cylinder (6) and the limit bolt (5) through bolts; the cutter rest (9) is fixed above the duplex cylinder (6) through a bolt, the cutter (8) is fixed on the cutter rest (9) through a cutter rest pressing plate (7), the rotating shaft (3) and the rotating base (4) are installed in a clearance fit mode, the range of the clearance is between 0.10mm and 0.20mm, a groove-shaped structure with the same width as the cutter (8) is arranged in the cutter rest pressing plate (7), two groove-shaped structures are arranged in the cutter rest pressing plate (7), and each groove-shaped structure is correspondingly provided with one cutter (8).
2. The online cutting device for the edge of the film according to claim 1, wherein a bolt hole with a waist-shaped groove structure is arranged above the mounting base (2).
3. An in-line cutting device for film edges according to claim 1, characterized in that the length of the limit bolt (5) is adjustable.
4. The online cutting device for the edge of the film according to claim 1, wherein the air cylinder (1) and the duplex air cylinder (6) are internally provided with film breaking sensor signals, and the film breaking sensor signals are mutually communicated.
5. A method of using a film edge on-line cutting device according to any one of claims 1 to 4, comprising the steps of:
step 1, clamping the film (10) by using the horizontal zipper clamp (11), stretching, starting the cylinder (1) through the horizontal zipper cutter unit, and pushing the rotation shaft (3) to rotate so that the rotation base (4) is perpendicular to the mounting base (2);
step 2, 3 seconds after the step 1 is finished, the duplex cylinder (6) is started, the cutter rest (9) is ejected to move upwards, and at the moment, the cutter (8) pierces the film (10) and cuts the film (10);
and 3, after the step 2 is finished, conveying the edges of the film (10) cut by the transverse zipper cutter units to an outlet area after clamping by the transverse zipper clamps (11), entering a rim charge crusher for crushing, recycling and granulating, and carrying out rolling and packaging after cooling the rest middle part of the film (10) to obtain a finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110766266.7A CN113478541B (en) | 2021-07-07 | 2021-07-07 | Online cutting device for edge of film and application method of online cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110766266.7A CN113478541B (en) | 2021-07-07 | 2021-07-07 | Online cutting device for edge of film and application method of online cutting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113478541A CN113478541A (en) | 2021-10-08 |
| CN113478541B true CN113478541B (en) | 2023-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110766266.7A Active CN113478541B (en) | 2021-07-07 | 2021-07-07 | Online cutting device for edge of film and application method of online cutting device |
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| JP2001315185A (en) * | 2000-05-01 | 2001-11-13 | Kinugawa Rubber Ind Co Ltd | Method and apparatus for preparing resin product in continuous length |
| JP2007320016A (en) * | 2006-06-05 | 2007-12-13 | Futamura Chemical Co Ltd | Trimming method and trimming device for film roll |
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| CN211842338U (en) * | 2020-04-08 | 2020-11-03 | 威海锦富信诺新材料科技有限公司 | Reciprocating automatic die-cutting rule device |
| CN211843183U (en) * | 2020-03-17 | 2020-11-03 | 江西科为薄膜新型材料有限公司 | Edge pressing shear roller mechanism for optical-grade polyester film transverse drawing device |
| CN112428336A (en) * | 2020-10-29 | 2021-03-02 | 合肥乐凯科技产业有限公司 | Device and method for trimming and dedusting of thin film |
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| CN214724436U (en) * | 2021-01-26 | 2021-11-16 | 云南昆岭薄膜工业有限公司 | Floating type biaxial tension film winding, reel changing and film breaking knife |
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2021
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| DE3248574A1 (en) * | 1982-12-30 | 1984-07-12 | VTM Maschinen- und Apparatebau GmbH & Co KG, 4350 Recklinghausen | Cross-cutter for severing film webs, e.g. in packaging machines |
| WO2000047376A1 (en) * | 1999-02-10 | 2000-08-17 | Hwa Young Jung | Cutting machine for plastic films |
| JP2001315185A (en) * | 2000-05-01 | 2001-11-13 | Kinugawa Rubber Ind Co Ltd | Method and apparatus for preparing resin product in continuous length |
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| CN205767301U (en) * | 2016-05-26 | 2016-12-07 | 苏州万盛塑胶科技股份有限公司 | Moulding stub bar excises mechanism |
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| CN211843183U (en) * | 2020-03-17 | 2020-11-03 | 江西科为薄膜新型材料有限公司 | Edge pressing shear roller mechanism for optical-grade polyester film transverse drawing device |
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| CN112428336A (en) * | 2020-10-29 | 2021-03-02 | 合肥乐凯科技产业有限公司 | Device and method for trimming and dedusting of thin film |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113478541A (en) | 2021-10-08 |
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