CN111421586A - Device for automatically adjusting web break angle - Google Patents

Device for automatically adjusting web break angle Download PDF

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Publication number
CN111421586A
CN111421586A CN202010397151.0A CN202010397151A CN111421586A CN 111421586 A CN111421586 A CN 111421586A CN 202010397151 A CN202010397151 A CN 202010397151A CN 111421586 A CN111421586 A CN 111421586A
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CN
China
Prior art keywords
web
knife rest
paper
roll
knife
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010397151.0A
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Chinese (zh)
Inventor
杜成城
王淦明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shantou Wanshun New Material Group Co ltd
Original Assignee
Shantou Wanshun New Material Group Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shantou Wanshun New Material Group Co ltd filed Critical Shantou Wanshun New Material Group Co ltd
Priority to CN202010397151.0A priority Critical patent/CN111421586A/en
Publication of CN111421586A publication Critical patent/CN111421586A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00Cutting 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
    • B26D1/01Cutting 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
    • B26D1/12Cutting 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 cutting member moving about an axis
    • B26D1/14Cutting 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 cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/143Cutting 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 cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a stationary axis
    • B26D1/15Cutting 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 cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a stationary axis with vertical cutting member
    • B26D1/151Cutting 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 cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a stationary axis with vertical cutting member for thin material, e.g. for sheets, strips or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/007Control means comprising cameras, vision or image processing systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08Means for actuating the cutting member to effect the cut
    • B26D5/086Electric, magnetic, piezoelectric, electro-magnetic means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08Means for treating work or cutting member to facilitate cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00Registering, tensioning, smoothing or guiding webs
    • B65H23/04Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/26Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

A device for automatically adjusting the web break angle. The invention aims to solve the problems that the front end paper edge and the side paper edge of a flat paper can not be automatically cut into a right angle from a roll paper in the prior art, and the requirement of printing multicolor accurate overprinting can not be met. The technical points are as follows: including the roll web device of breaking, roll web exhibition paper-back installation, roll web conveying roller and paper conveyer, the characteristic is that the roll web device of breaking includes the knife rest base, the knife rest, the rotary cutter that breaks, fixed lower sword, photoelectric sensor, the roll web side gauge, driven rack, drive gear, including a motor, an end cap, a controller, and a cover plate, the knife rest is installed on the knife rest base, its one side is articulated, the opposite side is portable cooperation, the rotary cutter that breaks is allocated on the knife rest, fixed lower sword is installed at the rotary cutter that breaks and is joined in marriage the position, the knife rest has one side to be equipped with the cantilever, photoelectric sensor installs on the cantilever, roll web side gauge locates knife rest one side of cantilever, photoelectric sensor's detection light beam shines downwards, the motor passes.

Description

Device for automatically adjusting web break angle
Technical Field
The invention relates to a cutting device of roll paper, in particular to a device for automatically adjusting the web break angle.
Background
Paper production often requires cutting a web into flat sheets. In order to meet the requirement of multicolor overprinting precision of printed patterns, the undercut (front paper edge) and the pull gauge edge (side paper edge) of the flat paper are required to be at right angles (90 degrees). In the traditional printing process, before printing on a printing machine, a processing enterprise or a printing factory needs to adopt an artificial paper cutting mode for the flat paper to be printed, and the seaming of the flat paper is cut into right angles with the drawing edge on a paper cutter, so that the processing procedure is increased, the processing cost is increased, and the improvement of the production efficiency is influenced. At present, no equipment capable of automatically cutting a front end paper edge and a side paper edge of paper into a right angle (90 degrees) when roll paper is cut into flat paper exists.
The intelligent paper cutting machine disclosed in the Chinese patent application No. 201420557031.2 structurally comprises a cutter, a cutter rest and a telescopic cylinder, wherein the cutter is fixed on the cutter rest, the cutter rest is fixedly connected with the telescopic cylinder, and the intelligent paper cutting machine is characterized in that a paper cutting platform is arranged below the cutter, a paper pusher is arranged on the paper cutting platform, the paper pusher is positioned on one side of the cutter, a paper pressing device is arranged between the paper pusher and the cutter, the paper pressing device is positioned above the paper cutting platform, an upper conveying pressing roller and a lower conveying pressing roller are arranged on the other side of the cutter, the upper conveying pressing roller is fixedly connected with the upper push-pull cylinder, the lower conveying pressing roller is fixedly connected with the lower push-pull cylinder, a left deviation sensor and a right deviation sensor are respectively fixed on two sides of the cutter rest, the left deviation sensor and the right deviation sensor are respectively connected with a controller, and the controller is respectively connected with the upper push, The lower push-pull cylinder is connected. The scheme has the characteristics that: firstly, the paper is not scattered in the cutting process through the paper returning device and the paper pressing device; and secondly, the left and right movement of the upper and lower conveying press rollers is automatically controlled to correct the left and right deviation of the web in the conveying process, so that the inclination of cut flat paper caused by the left and right deviation of the paper material is overcome. But the disadvantages are: the front paper edge and the side paper edge of the cut flat paper cannot be guaranteed to be exactly right-angled (90 degrees), and the problem that the front paper edge and the side paper edge of the flat paper are not right-angled due to the fact that the side paper edge of the paper is not parallel to the conveying direction of the paper cannot be met, so that the cut flat paper cannot meet the requirement of multicolor accurate overprinting of printed patterns.
Chinese patent application No. 201720793637.X discloses an automatic deviation correcting device of branch cutter, the structure is including setting up first control box and the second control box at two rubber roll receipts cloth axle both ends respectively, the controller is installed to the first control box, the second control box outside is fixed with the motor through the installing support, the transmission shaft of motor passes through the shaft coupling and is connected with the lead screw in the second control box, the end of lead screw is fixed on the fine setting support, the fine setting support passes through pressure bearing and cutter adjustment hub connection, position sensor is installed to the upper end of second control box, position sensor sends the skew signal of the cloth that detects to the controller, the signal output part and the motor control of controller are connected. The scheme is characterized in that: when the flag cloth is conveyed and operated on the equipment and is shifted leftwards or rightwards, the servo motor drives the screw rod to move leftwards and rightwards, the screw rod drives the cutter adjusting shaft to move leftwards and rightwards through the fine adjustment support, and then the slitting knife is driven to move together, so that the shift of the slitting knife is corrected, and automatic deviation correction is realized. However, this solution cannot ensure that the front edge and the side edge of the banner cut by the subsequent process are exactly right angles (90 °), so it is not suitable for the equipment that needs to meet the requirement of multicolor accurate overprinting of printed patterns when the web is cut into flat paper.
Disclosure of Invention
The invention aims to provide an improved device for automatically adjusting the angle of broken paper webs, which can overcome the defects of the prior art, and aims to solve the problems that no device capable of automatically cutting the front end paper edge and the side paper edge of paper into right angles (90 degrees) exists at present when the paper webs are cut into flat paper, and the flat paper automatically cut by the conventional equipment cannot meet the requirement of multicolor accurate overprinting of printed patterns.
The technical scheme adopted by the invention for solving the technical problems is as follows: a device for automatically adjusting the web break angle comprises a web break device, a web flattening device arranged in front of the web break device, a web conveying roller arranged between the web flattening device and the web break device, and a sheet conveying device arranged behind the web break device, and is characterized in that: the web breaking device comprises a knife rest base, a knife rest, a breaking rotary knife, a fixed lower knife, a photoelectric sensor, a web side gauge, a driven rack, a driving gear and a motor, wherein the knife rest is installed on the knife rest base from two sides, one side of the knife rest is hinged on the knife rest base, the other side of the knife rest base is movably matched on the knife rest base, the breaking rotary knife is rotatably matched on two sides of the knife rest, the fixed lower knife is installed on the knife rest and matched with the breaking rotary knife, a cantilever extending forwards is arranged on one side or the other side of the knife rest, the photoelectric sensor is installed on the front end part of the cantilever, the web side gauge is arranged on the knife rest base on one side or the other side of the knife rest base where the cantilever is located, a detection light beam of the photoelectric sensor irradiates downwards, the driven rack is fixed on the knife rest and movably matched on the other side of the knife rest base, the motor is installed on the tool rest base, and the driving gear is fixed on an output shaft of the motor and meshed with the driven rack.
An included angle between a connecting line of a positioning base point of the roll paper side gauge and an irradiation base point of the probe beam and a blade line of the fixed lower cutter may be set to be a right angle (90 °). The positioning base point of the roll paper side gauge refers to the roll paper conveying process, and a contact point which is firstly contacted with the side edge of the roll paper on the roll paper side gauge is arranged on the roll paper side gauge; the irradiation base point of the detection light beam is a light spot which is just contacted with the side edge of the roll paper when the included angle between the side edge of the roll paper and the edge line of the fixed lower cutter is an accurate right angle (90 degrees) in the roll paper transmission process.
According to the technical scheme, the photoelectric sensor can be used for respectively emitting red, blue and green detection light beams, and the photoelectric sensor can automatically convert the most appropriate detection light beam color according to different light reflection degrees of the surfaces of different roll paper so as to obtain the optimal contrast and the optimal detection accuracy.
According to the technical scheme, the motor can adopt a servo motor with a PID controller capable of being controlled in a variable speed mode, and is used for achieving the purpose that the driving rotating speed of the driving gear is adjusted in a slow mode when the web breaking angle is finely adjusted; when the roll paper breaking angle is roughly adjusted, the driving rotating speed of the driving gear is high.
According to the technical scheme, the web flattening device can adopt a four-roller flattening device, and the purpose of flattening the paper surface is achieved by adjusting the tension of the web paper surface to be uniform. The four-roll flattening device can be composed of a paper feeding roll, a longitudinal flattening roll assembly consisting of two longitudinal flattening rolls and a roll angle adjusting mechanism, and a transverse flattening roll assembly consisting of a transverse flattening roll and a roll angle adjusting mechanism.
The flat paper conveying device in the technical scheme can adopt a belt conveying mechanism.
According to the technical scheme, the front part of the cantilever can be further provided with the camera, the camera is in signal connection with the display device with the display screen, and the contact condition of the detection light beam of the photoelectric sensor and the side edge of the roll paper can be observed and monitored in real time.
The front or the back in the technical scheme is determined according to the sequence of running the roll paper from front to back.
The invention has the beneficial effects that: because the web breaking device comprises a knife rest base, a knife rest, a breaking rotary knife, a fixed lower knife, a photoelectric sensor, a web side gauge, a driven rack, a driving gear and a motor, wherein the knife rest is arranged on the knife rest base by two sides, one side of the knife rest is hinged on the knife rest base, the other side of the knife rest base is movably matched on the knife rest base, the breaking rotary knife is rotatably matched on two sides of the knife rest, the fixed lower knife is arranged on the position, matched with the breaking rotary knife, on the knife rest, one side or the other side of the knife rest is provided with a cantilever extending forwards, the photoelectric sensor is arranged on the front end part of the cantilever, the web side gauge is arranged on the knife rest base on one side or the other side of the knife rest base where the cantilever is positioned, a detection light beam of the photoelectric sensor irradiates downwards, the driven rack is fixed on the knife rest and can be movably matched on the other side of the knife rest, the motor is arranged on the knife rest base, the driving gear is fixed on the output shaft of the motor and meshed with the driven rack, so that in the process that the roll paper is conveyed to enter the edge line of the fixed lower knife, when the included angle between the side edge of the roll paper and the edge line of the fixed lower knife is not a right angle, the control circuit of the roll paper sheet breaking device drives the knife rest to rotate through the motor, the driving gear and the driven rack according to the contact condition of the detection light beam of the photoelectric sensor and the side edge of the roll paper, so that the included angle between the edge line of the fixed lower knife and the side edge of the roll paper is automatically adjusted to be an accurate right angle, and the front end paper edge and the side paper edge of each piece of flat paper automatically cut from the roll paper are all accurate right angles, thereby effectively reducing the processing procedures of printing production, lowering the processing cost and improving the production efficiency, and effectively improve the multicolor accurate overprinting quality of the patterns. The invention is the only technical scheme which can automatically adjust the angle of the paper cutter to adapt to the correction cutting that the included angle between the side edge of the roll paper and the edge line of the fixed lower cutter is not a right angle, solves the defect that the prior art does not have the equipment, and has simple structure, practicality, convenience and ideal effect.
The invention is further described below with reference to the following figures and examples.
Drawings
FIG. 1 is a schematic diagram of one embodiment of the present invention.
Fig. 2 is a schematic view, partly in section, from the right in fig. 1.
Fig. 3 is a schematic top view of fig. 2.
In the figure: 1. a web breaking device; 2. a web flattening device; 3 and 4, web feed rollers; 5. a sheet conveying device; 6. a tool holder base; 7. a tool holder; 8. a tension-breaking rotary knife; 9. a fixed lower cutter 10, a photoelectric sensor; 11. a roll paper side gauge; 12. a driven rack; 13. a drive gear; 14. a motor; 15. one side of the tool holder; 16. the other side of the tool rest; 17. a cantilever; 18. detecting a light beam; 19. a knife edge line; 20. a web; 21. a paper feeding roller; 22 and 23, longitudinal leveling rolls; 24. a roller angle adjusting mechanism; 25. a longitudinal leveling roller assembly; 26. a transverse leveling roller; 27. a roller angle adjusting mechanism; 28. a transverse leveling roller assembly; 29. a camera; 30. hinging a shaft; 31. a chute; 32. a lower port; 33. and (5) paper is flatly laid.
Detailed Description
Referring to fig. 1 to 3, the apparatus for automatically adjusting a web break angle according to the present invention includes a web break apparatus 1, a web flattening apparatus 2 disposed in front of the web break apparatus 1, web feed rollers 3 and 4 disposed between the web flattening apparatus 2 and the web break apparatus 1, and a sheet transport apparatus 5 disposed behind the web break apparatus 1, and is characterized in that: the roll paper tension breaking device 1 comprises a tool rest base 6, a tool rest 7, a tension breaking rotary knife 8, a fixed lower knife 9, a photoelectric sensor 10, a roll paper side gauge 11, a driven rack 12, a driving gear 13 and a motor 14, wherein the tool rest 7 is arranged on the tool rest base 6 from two sides thereof, one side 15 of the tool rest base is hinged on the tool rest base 6, the other side 16 of the tool rest base is movably matched on the tool rest base 6, the tension breaking rotary knife 8 is rotatably matched on two sides of the tool rest 7, the fixed lower knife 9 is arranged on the position, matched with the tension breaking rotary knife 8, of the tool rest 7, a cantilever 17 extending forwards is arranged on the other side 16 of the tool rest 7, the photoelectric sensor 10 is arranged on the front end part of the cantilever 17, the roll paper side gauge 11 is arranged on the tool rest base 6 of the other side 16 of the tool rest 7 where the cantilever 17 is positioned, the detection light beam 18 of the photoelectric sensor 10 irradiates downwards, the driven rack 12 is fixed on the other side 16 of the tool rest 7 which is movably matched on the tool rest base 6, the motor 14 is installed on the tool rest base 6, and the driving gear 13 is fixed on the output shaft of the motor 14 and meshed with the driven rack 12.
An angle between a line connecting a positioning base point of the roll paper side gauge 11 and an irradiation base point of the probe beam 18 and the edge line 19 of the fixed lower cutter 9 is set to be a right angle (90 °). The base point of the roll paper side gauge 11 refers to the process of conveying the roll paper 20, and the roll paper side gauge 11 is the contact point which is firstly contacted with the side edge of the roll paper 20; the irradiation base point of the probe beam 18 is a point at which the probe beam 18 just contacts the side edge of the web 20 when the side edge of the web 20 makes a right angle (90 °) with the edge line 19 of the fixed lower blade 9 during the transportation of the web 20.
The photoelectric sensor 10 is a photoelectric sensor capable of emitting red, blue or green detection beams 18, and the photoelectric sensor 10 can automatically convert the most appropriate detection beam color according to different reflectances of the surfaces of different webs 20, so as to obtain the best contrast and the best detection accuracy.
The motor 14 adopts a servo motor with a variable speed controlled PID controller, and is used for realizing the speed regulation of the driving rotating speed of the driving gear 13, so that when the web 20 breaking angle is finely regulated, the driving rotating speed of the driving gear 13 adopts a slow speed; when the roll paper 20 is roughly adjusted to a large degree, the driving speed of the driving gear 13 is fast.
The web flattening device 2 adopts a four-roller flattening device, and achieves the purpose of flattening the paper surface of the web 20 by adjusting the tension of the paper surface of the web 20 to be uniform. The four-roll flattening apparatus 2 is composed of a feed roll 21, a longitudinal flattening roll assembly 25 having two longitudinal flattening rolls 22, 23 and a roll angle adjusting mechanism 24, and a transverse flattening roll assembly 28 having a transverse flattening roll 26 and a roll angle adjusting mechanism 27.
The sheet conveying device 5 adopts a belt conveying mechanism.
A camera 29 is also mounted on the front portion of the arm 17, and the camera 29 is in signal connection with a display device (not shown) having a display screen, so that the contact of the detection beam 18 of the photoelectric sensor 10 with the side of the web 20 can be observed and monitored in real time.
One side 15 of the knife rest 7 is hinged on the knife rest base 6 through a hinge shaft 30 at the lower part of the knife rest.
The web transport roller 4 is a pair of active press rollers.
The other side 16 of the tool rest 7 is movably matched on a sliding groove 31 of the tool rest base 6; the driven rack 12 is fixed on the bottom surface of the other side 16 of the tool post 7 and is engaged with the driving gear 13 through a lower through hole 32 in the middle of the slide groove 31.
In use, when the web 20 is transported into the web flattening device 2, the web 20 is longitudinally flattened by the longitudinal flattening roller assembly 25 by adjusting the longitudinal surface tension of the web 20 to be uniform, and then the web 20 is transversely flattened by the transverse flattening roller assembly 28 by adjusting the transverse surface tension of the web 20 to be uniform; then the web 20 is transported by the web transport rollers 3, 4, and the side edge of the web 20 is brought into the edge line 19 of the stationary lower cutter 9 against the web side guide 11; at this time, the photoelectric sensor 10 sends a signal to a control circuit (not shown) according to different states that the detection light beam 18 emitted by the photoelectric sensor is in contact with, just in contact with or not in contact with the side edge of the roll paper 20, the control circuit gives an instruction to control the motor 14 to rotate, the other side 16 of the knife rest 7 is driven to rotate around a hinge shaft 30 on one side 15 of the knife rest 7, when the detection light beam 18 rotated to the photoelectric sensor 10 is just in contact with the side edge of the roll paper 20, the control circuit controls the motor 14 to stop rotating, and the included angle between the side edge of the roll paper 20 and the edge line 19 of the fixed lower knife 9 is an accurate right angle (90 °); then the control circuit controls the tension breaking rotary knife 8 to rotate for a circle, and the tension breaking rotary knife is matched with a knife edge line 19 of the fixed lower knife 9 to cut off the front end port of the roll paper 20; then the web feeding rollers 3, 4 feed the web 20 further backward, when the web 20 reaches the length of one flat sheet 33 through the edge line 19 of the fixed lower cutter 9, the web feeding rollers 3, 4 stop the feeding of the web 20, the photoelectric sensor 10 and the control circuit cooperate with each other according to the method, then the control circuit controls the other side 16 of the cutter holder 7 to rotate, so that the included angle between the side edge of the web 20 and the edge line 19 of the fixed lower cutter 9 is an accurate right angle (90 °), and then the control circuit controls the tension breaking rotary cutter 8 to rotate for one circle to cooperate with the edge line 19 of the fixed lower cutter 9, so as to cut out one flat sheet 33 at the front end of the web 20; the cut sheet 33 is then dropped on the sheet conveying device 5 and conveyed away; and continuous circulation is carried out in sequence, so that the flat paper with accurate right angle (90 degrees) of the front paper edge and the side paper edge can be automatically cut out one by one.

Claims (9)

1. A device for automatically adjusting the web break angle comprises a web break device, a web flattening device arranged in front of the web break device, a web conveying roller arranged between the web flattening device and the web break device, and a sheet conveying device arranged behind the web break device, and is characterized in that: the web breaking device comprises a knife rest base, a knife rest, a breaking rotary knife, a fixed lower knife, a photoelectric sensor, a web side gauge, a driven rack, a driving gear and a motor, wherein the knife rest is installed on the knife rest base from two sides, one side of the knife rest is hinged on the knife rest base, the other side of the knife rest base is movably matched on the knife rest base, the breaking rotary knife is rotatably matched on two sides of the knife rest, the fixed lower knife is installed on the knife rest and matched with the breaking rotary knife, a cantilever extending forwards is arranged on one side or the other side of the knife rest, the photoelectric sensor is installed on the front end part of the cantilever, the web side gauge is arranged on the knife rest base on one side or the other side of the knife rest base where the cantilever is located, a detection light beam of the photoelectric sensor irradiates downwards, the driven rack is fixed on the knife rest and movably matched on the other side of the knife rest base, the motor is installed on the tool rest base, and the driving gear is fixed on an output shaft of the motor and meshed with the driven rack.
2. The apparatus for automatically adjusting a web break angle according to claim 1, wherein an angle between a line connecting a positioning base point of said web side gauge and an irradiation base point of said probe beam and a blade line of said fixed lower blade is set to be a right angle.
3. The apparatus for automatically adjusting a web break angle according to claim 1 or 2, characterized in that said photo sensor employs photo sensors capable of emitting red, blue and green detection beams, respectively.
4. The device for automatically adjusting the web break angle as claimed in claim 1 or 2, characterized in that the motor is a servo motor with a PID controller with variable speed control for realizing the speed adjustment of the driving rotation speed of the driving gear.
5. The apparatus for automatically adjusting a web break angle according to claim 1 or 2, wherein said web flattening means adopts a four-roll flattening means for flattening said web by adjusting a tension of said web surface to be uniform, said four-roll flattening means being comprised of a feed roll, a longitudinal leveling roll assembly having two longitudinal leveling rolls and a roll angle adjusting mechanism, and a transverse leveling roll assembly having a transverse leveling roll and a roll angle adjusting mechanism.
6. The apparatus for automatically adjusting a web break angle according to claim 1 or 2, characterized in that the sheet feeding means employs a belt feeding mechanism.
7. The device for automatically adjusting the web break angle as claimed in claim 1 or 2, characterized in that a camera is further installed on the front part of the cantilever, and the camera is in signal connection with a display device having a display screen.
8. The apparatus for automatically adjusting a web break angle as claimed in claim 1 or 2, wherein one side of said blade holder is hinged to said blade holder base by a hinge shaft at a lower portion thereof.
9. The device for automatically adjusting the web break angle as claimed in claim 1 or 2, wherein the other side of said tool holder is movably fitted on a slide groove of said tool holder base, and said driven rack is fixed on the bottom surface of the other side of said tool holder and engaged with said driving gear through a lower through hole in the middle of said slide groove.
CN202010397151.0A 2020-05-12 2020-05-12 Device for automatically adjusting web break angle Pending CN111421586A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010397151.0A CN111421586A (en) 2020-05-12 2020-05-12 Device for automatically adjusting web break angle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010397151.0A CN111421586A (en) 2020-05-12 2020-05-12 Device for automatically adjusting web break angle

Publications (1)

Publication Number Publication Date
CN111421586A true CN111421586A (en) 2020-07-17

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ID=71552631

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010397151.0A Pending CN111421586A (en) 2020-05-12 2020-05-12 Device for automatically adjusting web break angle

Country Status (1)

Country Link
CN (1) CN111421586A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113134853A (en) * 2021-04-12 2021-07-20 南京振锋机械刀具有限公司 High-speed transverse cutter for cutting paper and cutting method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113134853A (en) * 2021-04-12 2021-07-20 南京振锋机械刀具有限公司 High-speed transverse cutter for cutting paper and cutting method thereof

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