CN112278936A - High-precision automatic cutting machine for paper products and working method of high-precision automatic cutting machine - Google Patents
High-precision automatic cutting machine for paper products and working method of high-precision automatic cutting machine Download PDFInfo
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- CN112278936A CN112278936A CN202011226576.1A CN202011226576A CN112278936A CN 112278936 A CN112278936 A CN 112278936A CN 202011226576 A CN202011226576 A CN 202011226576A CN 112278936 A CN112278936 A CN 112278936A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H16/00—Unwinding, paying-out webs
- B65H16/02—Supporting web roll
- B65H16/06—Supporting web roll both-ends type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/02—Advancing webs by friction roller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
- B65H23/032—Controlling transverse register of web
- B65H23/038—Controlling transverse register of web by rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
- B65H26/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs
- B65H26/04—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs for variation in tension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/02—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with longitudinal slitters or perforators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
- B65H35/06—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with blade, e.g. shear-blade, cutters or perforators
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Abstract
A high-precision automatic cutting machine for paper products and a working method thereof comprise an independent unreeling machine, a cutting machine body and a control system, wherein the independent unreeling machine and the cutting machine body are sequentially connected from front to back; and the independent unreeling machine and the pinch roll set are both provided with a tension detection module. The high-precision automatic cutting machine for the paper products and the working method thereof have the advantages of reasonable structural design, simple working method, high automation degree, real-time adjustment and position correction of tension in the unreeling and drawing processes, improvement of production efficiency and precision and wide prospect.
Description
Technical Field
The invention belongs to the technical field of cutting machines, and particularly relates to a high-precision automatic cutting machine for paper products and a working method of the high-precision automatic cutting machine.
Background
The automatic cutting machine is used for cutting and cutting sheets in various industries, has high automation program and simple operation, and is cutting equipment adopted in various industries, such as the paper industry. The paper industry is one of the important components of the national economy. In the last two decades, the paper industry in China has been developing in a crossing manner. According to the survey of the paper-making society of China, the total production of paper and paperboard in 2019 is 10630.22 ten thousand tons. In the paper manufacturing process, cutting of machine paper and paperboard for paper products is one of the important processes. The key equipment in the process is the cutting machine, the cutting precision of the cutting machine is required to be very high in the cutting process of the cutting machine, the direct influence is generated on the quality of a paper product, and new requirements on the cutting efficiency and the cutting portability are provided along with the continuous upgrading of industrial production.
At present, most domestic cutting machines have single structures, few individual design considerations, inconvenient operation and low cutting precision, and have yet to be improved in aspects of deviation correction control, cutting forms and the like.
Chinese patent application No. CN201220238875.1 discloses a paper cutter, including paper cutter mobile rail, paper cutter motor, paper cutter hold-in range, removal slide, paper cutter support arm, cut paper blade, the rotatory cut paper motor of control cut paper blade, automatic, intelligent degree is low, does not also solve the inconvenient, the poor problem of mobility of operation of guillootine.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects, the invention aims to provide the high-precision automatic cutting machine for the paper products and the working method thereof, the high-precision automatic cutting machine is reasonable in structural design, simple in working method and high in automation degree, tension in the unreeling and drawing processes is adjusted in real time and position correction is carried out, smooth cutting work is ensured, the phenomenon that objects to be cut are wrinkled and loosened to cause reduction of yield is avoided, production efficiency and precision are improved, and the high-precision automatic cutting machine is wide in application prospect.
The purpose of the invention is realized by the following technical scheme:
a high-precision automatic cutting machine for paper products is characterized by comprising an independent unreeling machine, a cutting machine body and a control system, wherein the independent unreeling machine and the cutting machine body are sequentially connected from front to back; tension detection modules are arranged on the independent unreeling machine and the pinch roll set; the deviation correcting mechanism comprises a light source, a CCD camera, a lens, a photoelectric sensor and an image acquisition card, wherein the CCD camera shoots right above the object to be cut, and the light source is arranged above the object to be cut around the CCD camera; the bottom of the CCD camera is provided with a lens, the photoelectric sensors are arranged on two sides of the front end below the CCD camera, the transverse cutting assembly and the longitudinal cutting assembly, and the CCD camera is connected with an image acquisition card; the control system comprises a PLC controller, a servo driver and an industrial personal computer; the PLC controller is connected with an industrial personal computer through an RJ45, receives an operation instruction from the industrial personal computer, is in communication connection with the tension detection module and receives tension information from the independent unreeling machine and the pinch roll set; the PLC is connected with a servo driver, and the unwinding servo motor of the independent unwinding machine, the traction servo motor of the pinch roll set, the transverse cutting servo motor of the transverse cutting assembly and the longitudinal cutting servo motor of the longitudinal cutting assembly are respectively driven by the servo driver to be connected; the photoelectric sensor serial port is connected with an industrial personal computer, the image acquisition card is connected with the industrial personal computer through IEEE1394, and the industrial personal computer is connected with a CCD camera.
The high-precision automatic cutting machine for the paper products, disclosed by the invention, has the advantages of reasonable structural design and high automation degree, can be used for adjusting the tension in the unreeling and drawing processes and correcting the position in real time, ensuring the smooth operation of cutting, avoiding the reduction of yield caused by the phenomena of creasing, edge loosening and the like of the objects to be cut, improving the production efficiency and precision and having wide application prospect.
Firstly, in order to improve cutting speed and tension control accuracy, the cutting machine body is separated from the unreeling mechanism in the prior art, an independent unreeling machine is arranged, the flexibility of the unreeling process is improved, the unreeling mechanism is convenient to assemble, disassemble and debug, in addition, in order to deal with unreeling inertia, a torsion adjuster can be arranged on an unreeling shaft of the independent unreeling machine, a spring is arranged in the torsion adjuster, and the elasticity of the spring is adjusted through the knob, so that the damping size is changed. The torsion regulator is generally after the adjustment, the damping is unchangeable, in order to maintain the tension invariable, be provided with tension detection module on independent unreeling machine, tension detection module detects the current tension information of independent unreeling machine and transmits for the PLC controller, the PLC controller accepts information such as industrial computer about independent unreeling machine tension and running instruction, calculate the best running state of independent unreeling machine and unreel servo motor through servo driver drive and come control independent unreeling machine and unreel tension, with this reply and wait to cut the thing pincher trees, phenomenon such as slack side, effectively the exhibition is waited to cut the thing.
Secondly, the object to be cut is hauled and transported by a traction mechanism after being unreeled, the traction mechanism consists of two groups of pinch roll sets, and similarly, a tension detection module detects the current tension information of each group of pinch roll sets and transmits the information to a PLC (programmable logic controller). And a deviation correcting mechanism is arranged between the two groups of pinch roll sets to realize deviation correction.
The invention adopts the structure arrangement of the transverse cutting component and the longitudinal cutting component, realizes transverse cutting and longitudinal cutting of the object to be cut, and has high automation degree and high efficiency.
Further, the above-mentioned automatic guillootine of high accuracy for paper products, pinch roll set includes pinch roll, convexity roller, floating tension roller.
The tension and deviation correction are adjusted in the process of dragging and transporting the object to be cut, wherein the tension control is completed through a floating tension roller, and the deviation correction is completed through the pressing force of a convexity roller and a pinch roller.
Further, in the above high-precision automatic cutting machine for paper products, the tension detection module includes a flexible speed sensor and a rotation speed sensor, and the flexible speed sensor is adhered to the outer surfaces of the pinch roll, the convexity roll and the floating tension roll and is uniformly arranged along the circumferential direction; the rotating speed sensor is arranged on the pinch roll, the convexity roll and the floating tension roll; the unwinding roller of the independent unwinding machine is also provided with a rotating speed sensor; and the flexible speed sensor and the rotating speed sensor are respectively in communication connection with the PLC.
The flexible speed sensor has the characteristics of ultrathin structure, flexible characteristic, multiple adaptability and the like, and when an object to be cut bypasses the pinch roll, the convexity roll and the floating tension roll in the traction process under the cooperation of the pinch roll, the convexity roll and the floating tension roll, the object to be cut is in contact with the flexible speed sensor and extrudes the flexible speed sensor, so that the resistance value of the flexible speed sensor is changed, and the online detection of the speed when the pinch roll, the convexity roll and the floating tension roll operate is realized. The rotation speed sensor is used for detecting the rotation speed of the pinch roll, the convexity roll and the floating tension roll in operation. And the unwinding roller of the independent unwinding machine is provided with a flexible speed sensor and a rotating speed sensor in the same way.
Further, the automatic guillootine of high accuracy for paper products, the crosscut subassembly includes last crosscut circular knife, lower crosscut circular knife, keysets, follow driving wheel, final drive wheel, power transmission mechanism, the final drive wheel is installed on power transmission mechanism, be provided with on the final drive wheel from the driving wheel and with follow driving wheel cooperation, from installing last crosscut circular knife, lower crosscut circular knife from the driving wheel, go up the crosscut circular knife and be connected as an organic whole with lower crosscut circular knife through the keysets.
Further, in the high-precision automatic cutting machine for paper products, the upper transverse cutting circular knife and the lower transverse cutting circular knife are counter-knife blades and are respectively arranged in the front and back direction of the feeding direction of the object to be cut; the upper transverse cutting circular knife and the lower transverse cutting circular knife are mounted on the driven wheel through mounting shafts, and friction rubber wheels are arranged on the mounting shafts.
Further, foretell an automatic guillootine of high accuracy for paper products, power transmission mechanism includes toothed belt, band pulley, belt, horizontal servo motor drive band pulley, the band pulley passes through the belt and connects, be provided with toothed belt in the belt.
The transverse cutting assembly adopts the cutter form of the upper transverse cutting circular cutter and the lower transverse cutting circular cutter, so that the cutting error is reduced, the cutting precision is improved, the abrasion to the cutter blade is reduced, and the service life is long. The upper transverse cutting circular knife and the lower transverse cutting circular knife are respectively arranged in the front and back direction in the feeding direction. And friction rubber wheels are respectively arranged on the mounting shafts of the upper transverse cutting circular knife and the lower transverse cutting circular knife, so that better transmission power action is realized. The upper transverse cutting circular knife and the lower transverse cutting circular knife are connected into a whole by the adapter plate, and the reciprocating power of the transverse cutting assembly is provided by the power transmission mechanism.
The power transmission mechanism is connected with a transverse cutting servo motor, the transverse cutting servo motor is connected with a main transmission wheel which is driven by a belt to move relative to a tooth-shaped belt fixed on the main transmission wheel, so that the main transmission wheel rotates to drive driven wheels positioned on the upper transverse cutting circular knife and the lower transverse cutting circular knife to drive the upper transverse cutting circular knife and the lower transverse cutting circular knife to cut objects to be cut.
Further, foretell an automatic guillootine of high accuracy for paper products, the rip cutting subassembly includes mounting bracket, a plurality of rip cutting knife subassembly, rip cutting locating lever, cutter actuating lever, rip cutting polished rod, the rip cutting knife unit cover is on the rip cutting locating lever, the rip cutting locating lever sets up on the mounting bracket, the cutter actuating lever all passes the rip cutting knife subassembly with the rip cutting polished rod, the cutter actuating lever is connected with rip cutting servo motor and drives the rip cutting knife subassembly.
Furthermore, according to the high-precision automatic cutting machine for the paper products, the longitudinal cutting knife assembly comprises a plurality of longitudinal cutting knives, and each longitudinal cutting knife is sleeved on the longitudinal cutting positioning rod through the positioning assembly.
The longitudinal cutting positioning rod can be provided with corresponding positioning holes, and each longitudinal cutting knife corresponds to each positioning hole through a positioning assembly and is respectively disassembled, replaced and adjusted, so that the use flexibility is improved.
The invention also relates to a working method of the high-precision automatic cutting machine for the paper products, which is characterized by sequentially comprising the following steps of:
(1) unreeling: the method comprises the steps that an independent unreeling machine unreels a to-be-cut object, during unreeling, a tension detection module detects current tension information of the independent unreeling machine and transmits the information to a PLC (programmable logic controller), the PLC receives information of an industrial personal computer about tension and an operation instruction of the independent unreeling machine, the optimal operation state of the independent unreeling machine is calculated, and an unreeling servo motor is driven by a servo driver to control unreeling tension of the independent unreeling machine;
(2) traction: the tension detection module detects current tension information of each group of pinch roll sets and transmits the information to the PLC, the PLC receives information of the industrial personal computer about the tension of the pinch roll sets and operation instructions, the optimal operation state of the pinch roll sets is calculated, and a servo driver drives a traction servo motor to control the traction tension of the pinch roll sets;
(3) rectifying deviation: when the photoelectric sensor detects that the object to be cut enters the position of the deviation rectifying mechanism, the photoelectric sensor senses light change and sends a signal to the industrial personal computer, the industrial personal computer sends a CCD camera photographing signal, the CCD camera photographs and transmits a collected image to the industrial personal computer through the image collecting card, the image collecting card converts an image analog signal into an image digital signal, the industrial personal computer performs visual processing on the digital image and calculates the position deviation amount, the PLC receives the information of the position deviation amount and an operation instruction of the industrial personal computer about the object to be cut, and the PLC drives the traction servo motor through the servo driver to control the pressing force regulation and control among the rollers of the pinch roller set, so that the deviation rectification is realized;
(4) transverse cutting: when the photoelectric sensor detects that the object to be cut enters the position of the transverse cutting assembly, the photoelectric sensor senses light change and sends a signal to the industrial personal computer, the industrial personal computer sends a signal to the PLC, the PLC receives information of a transverse cutting operation instruction of the industrial personal computer about the object to be cut, and the transverse cutting assembly is controlled by driving a transverse cutting servo motor through a servo driver;
(5) longitudinally cutting: when the photoelectric sensor detects that the object to be cut enters the longitudinal cutting assembly, the photoelectric sensor senses light change and sends a signal to the industrial personal computer, the industrial personal computer sends the signal to the PLC, the PLC receives longitudinal cutting operation instruction information of the industrial personal computer about the object to be cut, and the longitudinal cutting assembly is controlled by driving a longitudinal cutting servo motor through a servo driver;
(6) feeding: the material which finishes the cutting task automatically enters the next procedure through the feeding device.
Further, the working method of the high-precision automatic cutting machine for the paper product, wherein the visual processing in the step (3) comprises the following steps:
(1) calibrating the CCD camera and the lens by using an HALCON standard calibration board to obtain internal and external parameters of the CCD camera and distortion parameters of the lens, removing lens distortion by distortion correction, and realizing conversion from an image coordinate system to an actual three-dimensional coordinate system by using the internal and external parameters of the CCD camera;
(2) in the working process, images are collected through a CCD camera to carry out image preprocessing to remove noise, then different characteristic regions are selected as templates to carry out template matching coarse positioning, then an ROI region is set to carry out edge detection, real coordinates of positioning points are obtained through linear or elliptical fitting, and offset is calculated according to the system positioning principle.
Compared with the prior art, the invention has the following beneficial effects: structural design is reasonable, and operating method is simple, and degree of automation is high, adjusts in real time and carries out intelligent position to waiting to cut the thing and rectify to unreeling, the tension of traction process, ensures to cut going on smoothly of work, has avoided phenomenons such as waiting to cut thing pincher trees, pine limit to cause the yields to descend, has improved production efficiency and precision, and application prospect is extensive.
Drawings
Fig. 1 is a top layout view of the high precision automatic cutting machine for paper products of the present invention;
FIG. 2 is a block diagram of a control system of the high precision automatic cutting machine for paper products of the present invention;
FIG. 3 is a layout diagram of a deviation rectifying mechanism of the high-precision automatic cutting machine for paper products according to the present invention;
FIG. 4 is a schematic view of the tension detection module of the high precision automatic cutting machine for paper products according to the present invention;
FIG. 5 is a schematic view of a cross-cutting assembly of the high precision automatic cutting machine for paper products of the present invention;
FIG. 6 is a schematic view of a slitting assembly of the high precision automatic cutting machine for paper products of the present invention;
in the figure: the automatic cutting machine comprises an independent unreeling machine 1, an unreeling servo motor 11, a cutting machine body 2, a traction mechanism 21, a pinch roller set 211, a traction servo motor 212, a pinch roller 213, a convexity roller 214, a floating tension roller 215, a transverse cutting assembly 22, an upper transverse cutting circular knife 221, a lower transverse cutting circular knife 222, an adapter plate 223, a driven wheel 224, a main driving wheel 225, a power transmission mechanism 226, a toothed belt 2261, a belt wheel 2262, a belt 2263, a longitudinal cutting assembly 23, an installation frame 231, a longitudinal cutting knife assembly 232, a longitudinal cutting knife 2321, a longitudinal cutting positioning rod 233, a cutting knife driving rod 234, a longitudinal cutting polished rod 235, a positioning assembly 236, a discharging mechanism 24, a deviation correcting mechanism 25, a light source 251, a CCD camera 252, a lens 253, a photoelectric sensor 254, an image 255, a tension detection module 26, a flexible speed sensor 261, a rotating speed sensor 262, a transverse cutting servo motor 27, a longitudinal cutting servo motor 28, servo driver 32, industrial personal computer 33, object a to be cut.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to specific experimental data and accompanying fig. 1-6, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, the following embodiment provides a high-precision automatic cutting machine for paper products, which includes an independent unreeling machine 1, a cutting machine body 2 and a control system 3, wherein the independent unreeling machine 1 and the cutting machine body 2 are sequentially connected from front to back, the cutting machine body 2 includes a traction mechanism 21, a transverse cutting assembly 22, a longitudinal cutting assembly 23 and a discharging mechanism 24, the front end of the traction mechanism 21 is connected with the independent unreeling machine 1, the rear end of the traction mechanism is connected with the discharging mechanism 24, the traction mechanism 21 is composed of two sets of pinch roller sets 211, a deviation correcting mechanism 25 is arranged between the two sets of pinch roller sets 211, and the transverse cutting assembly 22 and the longitudinal cutting assembly 23 are sequentially arranged between the traction mechanism 21 and the discharging mechanism 24 from front to back; the independent unreeling machine 1 and the pinch roll set 211 are both provided with a tension detection module 26; the deviation correcting mechanism 25 comprises a light source 251, a CCD camera 252, a lens 253, a photoelectric sensor 254 and an image acquisition card 255, wherein the CCD camera 252 shoots right above the object to be cut, and the light source 251 is arranged above the object to be cut around the CCD camera 252; the bottom of the CCD camera 252 is provided with a lens 253, the photoelectric sensors 24 are arranged on two sides of the front end below the CCD camera 252, the transverse cutting component 22 and the longitudinal cutting component, and the CCD camera 252 is connected with an image acquisition card 255; the control system 3 comprises a PLC (programmable logic controller) 31, a servo driver 32 and an industrial personal computer 33; the PLC 31 is connected with the industrial personal computer 33 through an RJ45, the PLC 31 receives an operation instruction from the industrial personal computer 33, and the PLC 31 is in communication connection with the tension detection module 26 to receive tension information from the independent unreeling machine 1 and the pinch roll set 211; the PLC 31 is connected with a servo driver 32, and the servo driver 32 is used for respectively driving the unreeling servo motor 11 of the independent unreeling machine 1, the traction servo motor 212 of the pinch roll set 211, the transverse cutting servo motor 27 of the transverse cutting assembly 22 and the longitudinal cutting servo motor 28 of the longitudinal cutting assembly 23 to be connected; the photoelectric sensor 254 is connected with the industrial personal computer 33 through a serial port, the image acquisition card 255 is connected with the industrial personal computer 33 through IEEE1394, and the industrial personal computer 33 is connected with the CCD camera 252.
Further, as shown in fig. 2 and 4, the pinch roll set 211 includes a pinch roll 213, a convexity roll 214, and a floating tension roll 215.
Further, the tension detection module 26 comprises a flexible speed sensor 261 and a rotation speed sensor 262, wherein the flexible speed sensor 261 is adhered to the outer surfaces of the pinch roller 213, the convexity roller 214 and the floating tension roller 215 and is uniformly arranged along the circumferential direction; the rotating speed sensor 262 is arranged on the pinch roll 213, the convexity roll 214 and the floating tension roll 215; 261 and 262 rotating speed sensors are also arranged on the unwinding rollers of the independent unwinding machine 1; the flexible speed sensor 261 and the rotating speed sensor 262 are respectively in communication connection with the PLC 31.
Further, as shown in fig. 5 and 6, the traverse assembly 22 includes an upper traverse circular knife 221, a lower traverse circular knife 222, an adapter plate 223, a driven wheel 224, a main driving wheel 225 and a power transmission mechanism 226, the main driving wheel 225 is mounted on the power transmission mechanism 226, the driven wheel 224 is arranged on the main driving wheel 225 and is matched with the driven wheel 224, the driven wheel 224 is mounted with the upper traverse circular knife 221 and the lower traverse circular knife 222, and the upper traverse circular knife 221 is connected with the lower traverse circular knife 222 through the adapter plate 223 into a whole.
Further, the upper circular cross-cutting knife 221 and the lower circular cross-cutting knife 222 are counter-blades and are respectively arranged in front and back in the feeding direction of the object to be cut; the upper circular cross-cutting knife 221 and the lower circular cross-cutting knife 222 are mounted on the driven wheel 221 through a mounting shaft, and a friction rubber wheel is arranged on the mounting shaft.
Further, the power transmission mechanism 226 includes a toothed belt 2261, a pulley 2262, and a belt 2263, wherein the transverse servo motor 27 drives the pulley 2262, the pulley 2262 is connected by the belt 2263, and the toothed belt 2261 is disposed in the belt 2263.
Further, the longitudinal cutting assembly 23 comprises a mounting frame 231, a plurality of longitudinal cutting knife assemblies 232, a longitudinal cutting positioning rod 233, a cutting knife driving rod 234 and a longitudinal cutting polished rod 235, the longitudinal cutting knife assemblies 232 are sleeved on the longitudinal cutting positioning rod 233, the longitudinal cutting positioning rod 233 is arranged on the mounting frame 231, the cutting knife driving rod 234 and the longitudinal cutting polished rod 235 penetrate through the longitudinal cutting knife assemblies 232, and the cutting knife driving rod 24 is connected with the longitudinal cutting servo motor 28 and drives the longitudinal cutting knife assemblies 232.
Further, the slitting knife assembly 232 comprises a plurality of slitting knives 2321, and each slitting knife 2321 is sleeved on the slitting positioning rod 233 through the positioning assembly 236.
Examples
The invention relates to a high-precision automatic cutting machine for paper products, which sequentially comprises the following steps:
(1) unreeling: the object to be cut is unreeled through the independent unreeling machine 1, during unreeling, the tension detection module 26 detects current tension information of the independent unreeling machine 1 and transmits the information to the PLC controller 31, the PLC controller 31 receives information of the industrial personal computer 33 about the tension and the operation instruction of the independent unreeling machine 1, the optimal operation state of the independent unreeling machine 1 is calculated, and the unreeling servo motor 11 is driven through the servo driver 32 to control the unreeling tension of the independent unreeling machine 1;
(2) traction: the tension detection module 26 detects the current tension information of each group of pinch roller sets 21 and transmits the information to the PLC 31, the PLC 31 receives the information of the industrial personal computer 33 about the tension of the pinch roller sets 21 and the operation instruction, the optimal operation state of the pinch roller sets 21 is calculated, and the servo driver 32 drives the traction servo motor 212 to control the traction tension of the pinch roller sets 21;
(3) rectifying deviation: when the photoelectric sensor 254 detects that the object to be cut enters the position of the deviation rectifying mechanism 25, the photoelectric sensor 254 senses the light change and sends a signal to the industrial personal computer 33, the industrial personal computer 33 sends a photographing signal of the CCD camera 252, the CCD camera 252 photographs and transmits the acquired image to the industrial personal computer 33 through the image acquisition card 255, the image analog signal is converted into an image digital signal through the image acquisition card 255, the industrial personal computer 33 performs visual processing on the digital image and calculates the position deviation amount, the PLC controller 31 receives the information of the position deviation amount and the operation instruction of the object to be cut of the industrial personal computer 33, and the PLC controller 31 drives the traction servo motor 212 through the servo driver 32 to control the pressing force regulation and control among the rollers of the pinch roller group 21, so that the deviation rectification is realized;
(4) transverse cutting: when the photoelectric sensor 254 detects that the object to be cut enters the position of the transverse cutting assembly 22, the photoelectric sensor 254 senses light ray change and sends a signal to the industrial personal computer 33, the industrial personal computer 33 sends a signal to the PLC controller 31, the PLC controller 31 receives information of a transverse cutting operation instruction of the industrial personal computer 33 about the object to be cut, and the transverse cutting assembly 22 is controlled by driving a transverse cutting servo motor 27 through a servo driver 32;
(4) longitudinally cutting: when the photoelectric sensor 254 detects that the object to be cut enters the longitudinal cutting assembly 23, the photoelectric sensor 254 senses light change and sends a signal to the industrial personal computer 33, the industrial personal computer 33 sends a signal to the PLC controller 31, the PLC controller 31 receives information of a longitudinal cutting operation instruction of the industrial personal computer 33 about the object to be cut, and the longitudinal cutting assembly 23 is controlled by driving the longitudinal cutting servo motor 28 through the servo driver 32;
(6) feeding: the material that has completed the cutting task is automatically fed to the next process by the feeding device 24.
Wherein, the visual processing of the step (3 comprises the following steps:
(1) calibrating the CCD camera 252 and the lens 253 by using a HALCON standard calibration board to obtain internal and external parameters of the CCD camera 252 and distortion parameters of the lens 253, removing distortion of the lens 253 by distortion correction, and realizing conversion from an image coordinate system to an actual three-dimensional coordinate system by using the internal and external parameters of the CCD camera 252;
(2) in the working process, images are collected through the CCD camera 252 to carry out image preprocessing to remove noise, then different characteristic regions are selected as templates to carry out template matching coarse positioning, then an ROI region is set to carry out edge detection, the real coordinates of positioning points are obtained through linear or elliptical fitting, and the offset is calculated according to the system positioning principle.
Therefore, the high-precision automatic cutting machine for the paper products, disclosed by the invention, has the advantages of reasonable structural design, simple working method and high automation degree, can be used for adjusting the tension in the unreeling and drawing processes in real time and intelligently correcting the position of the to-be-cut object, ensuring the smooth operation of cutting, avoiding the reduction of yield caused by the phenomena of creasing, edge loosening and the like of the to-be-cut object, and realizing the purposes of high precision and high efficiency.
The specific working method of the invention is many, and the above description is only the preferred embodiment of the invention. It should be noted that the above examples are only for illustrating the present invention, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications can be made without departing from the principles of the invention and these modifications are to be considered within the scope of the invention.
Claims (10)
1. The high-precision automatic cutting machine for the paper products is characterized by comprising an independent unreeling machine (1), a cutting machine body (2) and a control system (3), wherein the independent unreeling machine (1) and the cutting machine body (2) are sequentially connected from front to back, the cutting machine body (2) comprises a traction mechanism (21), a transverse cutting assembly (22), a longitudinal cutting assembly (23) and a discharging mechanism (24), the front end of the traction mechanism (21) is connected with the independent unreeling machine (1), the rear end of the traction mechanism is connected with the discharging mechanism (24), the traction mechanism (21) consists of two sets of pinch roller sets (211), a deviation correcting mechanism (25) is arranged between the two sets of pinch roller sets (211), and the transverse cutting assembly (22) and the longitudinal cutting assembly (23) are sequentially arranged between the traction mechanism (21) and the discharging mechanism (24) from front to back; tension detection modules (26) are arranged on the independent unreeling machine (1) and the pinch roll set (211); the deviation rectifying mechanism (25) comprises a light source (251), a CCD camera (252), a lens (253), a photoelectric sensor (254) and an image acquisition card (255), wherein the CCD camera (252) shoots right above the object to be cut, and the light source (251) is arranged above the object to be cut around the CCD camera (252); the bottom of the CCD camera (252) is provided with a lens (253), the photoelectric sensor (24) is arranged on two sides of the front end below the CCD camera (252), the transverse cutting assembly (22) and the longitudinal cutting assembly, and the CCD camera (252) is connected with an image acquisition card (255); the control system (3) comprises a PLC (programmable logic controller) controller (31), a servo driver (32) and an industrial personal computer (33); the PLC controller (31) is connected with an industrial personal computer (33) through an RJ45, the PLC controller (31) receives an operation instruction from the industrial personal computer (33), and the PLC controller (31) is in communication connection with the tension detection module (26) to receive tension information from the independent unreeling machine (1) and the pinch roller set (211); the PLC controller (31) is connected with a servo driver (32), and the servo driver (32) is used for respectively driving an unreeling servo motor (11) of the independent unreeling machine (1), a traction servo motor (212) of the pinch roll set (211), a transverse cutting servo motor (27) of the transverse cutting assembly (22) and a longitudinal cutting servo motor (28) of the longitudinal cutting assembly (23) to be connected; the photoelectric sensor (254) is connected with an industrial personal computer (33) in a serial port mode, the image acquisition card (255) is connected with the industrial personal computer (33) through IEEE1394, and the industrial personal computer (33) is connected with the CCD camera (252).
2. A high precision automatic cutting machine for paper products according to claim 1, characterized in that the pinch roller set (211) comprises a pinch roller (213), a convexity roller (214), a floating tension roller (215).
3. The high precision automatic cutting machine for paper products according to claim 2, characterized in that the tension detection module (26) comprises a flexible speed sensor (261), a rotating speed sensor (262), the flexible speed sensor (261) is pasted on the outer surface of the pinch roller (213), the convexity roller (214) and the floating tension roller (215) and is evenly arranged along the circumferential direction; the rotating speed sensor (262) is arranged on the pinch roll (213), the convexity roll (214) and the floating tension roll (215); the unwinding roller of the independent unwinding machine (1) is also provided with a (261) and a rotating speed sensor (262); and the flexible speed sensor (261) and the rotating speed sensor (262) are respectively in communication connection with the PLC (31).
4. A high-precision automatic cutting machine for paper products as claimed in claim 1, wherein the transverse cutting assembly (22) comprises an upper transverse cutting circular knife (221), a lower transverse cutting circular knife (222), an adapter plate (223), a driven wheel (224), a main transmission wheel (225) and a power transmission mechanism (226), the main transmission wheel (225) is installed on the power transmission mechanism (226), the driven wheel (224) is arranged on the main transmission wheel (225) and is matched with the driven wheel (224), the driven wheel (224) is provided with the upper transverse cutting circular knife (221) and the lower transverse cutting circular knife (222), and the upper transverse cutting circular knife (221) is connected with the lower transverse cutting circular knife (222) into a whole through the adapter plate (223).
5. The high precision automatic cutting machine for paper products according to claim 4, characterized in that the upper and lower circular cross-cutting knives (221, 222) are counter knives and are arranged back and forth in the feeding direction of the object to be cut, respectively; the upper transverse cutting circular knife (221) and the lower transverse cutting circular knife (222) are mounted on the driven wheel (221) through mounting shafts, and friction rubber wheels are arranged on the mounting shafts.
6. A high precision automatic cutting machine for paper products according to claim 5, characterized in that the power transmission mechanism (226) comprises a toothed belt (2261), a pulley (2262), a belt (2263), the transverse servo motor (27) drives the pulley (2262), the pulley pulleys (2262) are connected by the belt (2263), and the toothed belt (2261) is arranged in the belt (2263).
7. The high-precision automatic cutting machine for paper products according to claim 6, characterized in that the longitudinal cutting assembly (23) comprises a mounting frame (231), a plurality of longitudinal cutting knife assemblies (232), a longitudinal cutting positioning rod (233), a cutting knife driving rod (234), and a longitudinal cutting polished rod (235), wherein the longitudinal cutting knife assemblies (232) are sleeved on the longitudinal cutting positioning rod (233), the longitudinal cutting positioning rod (233) is arranged on the mounting frame (231), the cutting knife driving rod (234) and the longitudinal cutting polished rod (235) both penetrate through the longitudinal cutting knife assemblies (232), and the cutting knife driving rod (24) is connected with a longitudinal cutting servo motor (28) and drives the longitudinal cutting knife assemblies (232).
8. A high precision automatic cutting machine for paper products according to claim 7, characterized in that the slitting knife assembly (232) comprises a plurality of slitting knives (2321), each of the slitting knives (2321) is sleeved on a slitting positioning rod (233) through a positioning assembly (236).
9. The working method of the high-precision automatic cutting machine for paper products according to any one of claims 1 to 8, characterized in that the working method comprises the following steps in sequence:
(1) unreeling: unreeling an object to be cut through the independent unreeling machine (1), wherein during unreeling, a tension detection module (26) detects current tension information of the independent unreeling machine (1) and transmits the current tension information to a PLC (programmable logic controller) (31), the PLC (31) receives information of tension and operation instructions of the independent unreeling machine (1) from an industrial personal computer (33), the optimal operation state of the independent unreeling machine (1) is calculated, and an unreeling servo motor (11) is driven through a servo driver (32) to control unreeling tension of the independent unreeling machine (1);
(2) traction: the tension detection module (26) detects current tension information of each group of pinch roll sets (21) and transmits the current tension information to the PLC (31), the PLC (31) receives information of tension and operation instructions of the pinch roll sets (21) from the industrial personal computer (33), the optimal operation state of the pinch roll sets (21) is calculated, and a servo driver (32) drives a traction servo motor (212) to control traction tension of the pinch roll sets (21);
(3) rectifying deviation: when the photoelectric sensor (254) detects that the object to be cut enters the position of the deviation rectifying mechanism (25), the photoelectric sensor (254) senses the light change and sends a signal to the industrial personal computer (33), the industrial personal computer (33) sends a photographing signal of the CCD camera (252), the CCD camera (252) photographs and transmits the acquired image to the industrial personal computer (33) through the image acquisition card (255), the image analog signal is converted into an image digital signal by an image acquisition card (255), the digital image is visually processed by an industrial personal computer (33) and the position offset is calculated, the PLC (31) receives the information of the industrial personal computer (33) about the position offset of the object to be cut and an operation instruction, the servo driver (32) drives the traction servo motor (212) to control the pressing force regulation and control among the rollers of the pinch roller set (21), thereby realizing the deviation correction;
(4) transverse cutting: when the photoelectric sensor (254) detects that the object to be cut enters the position of the transverse cutting assembly (22), the photoelectric sensor (254) senses light change and sends a signal to the industrial personal computer (33), the industrial personal computer (33) sends a signal to the PLC controller (31), the PLC controller (31) receives information of transverse cutting operation instructions of the industrial personal computer (33) about the object to be cut, and the transverse cutting assembly (22) is controlled by driving a transverse cutting servo motor (27) through a servo driver (32);
(5) longitudinally cutting: when the photoelectric sensor (254) detects that the object to be cut enters the longitudinal cutting assembly (23), the photoelectric sensor (254) senses light change and sends a signal to the industrial personal computer (33), the industrial personal computer (33) sends the signal to the PLC controller (31), the PLC controller (31) receives information of a longitudinal cutting operation instruction of the industrial personal computer (33) about the object to be cut, and the servo driver (32) drives the longitudinal cutting servo motor (28) to control the longitudinal cutting assembly (23);
(6) feeding: the material which completes the cutting task automatically enters the next working procedure through the feeding device (24).
10. The working method of the high precision automatic cutting machine for paper products according to claim 9, characterized in that the visual processing of the step (3) comprises the following steps:
(1) calibrating the CCD camera (252) and the lens (253) through a HALCON standard calibration board to obtain internal and external parameters of the CCD camera (252) and distortion parameters of the lens (253), removing distortion of the lens (253) through distortion correction, and realizing conversion from an image coordinate system to an actual three-dimensional coordinate system by using the internal and external parameters of the CCD camera (252);
(2) in the working process, images are collected through a CCD camera (252) to carry out image preprocessing to remove noise, then different characteristic regions are selected as templates to carry out template matching coarse positioning, then an ROI region is set to carry out edge detection, the real coordinates of positioning points are obtained through linear or elliptical fitting, and the offset is calculated according to the system positioning principle.
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Effective date of registration: 20221128 Address after: 221400 west side of Shuishan Road, Yantou village, Caoqiao Town, Xinyi City, Xuzhou City, Jiangsu Province Patentee after: Xuzhou Lianghua packaging products Co.,Ltd. Address before: 221400 north side of Yantou village, Caoqiao Town, Xinyi City, Xuzhou City, Jiangsu Province Patentee before: Xuzhou Lianghua Environmental Protection Technology Co.,Ltd. |