CN114985985B - Laser die cutting machine for cutting elastic film - Google Patents
Laser die cutting machine for cutting elastic film Download PDFInfo
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- CN114985985B CN114985985B CN202210895867.2A CN202210895867A CN114985985B CN 114985985 B CN114985985 B CN 114985985B CN 202210895867 A CN202210895867 A CN 202210895867A CN 114985985 B CN114985985 B CN 114985985B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/03—Observing, e.g. monitoring, the workpiece
- B23K26/032—Observing, e.g. monitoring, the workpiece using optical means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
- B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
- B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
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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
- B65H23/0204—Sensing transverse register of web
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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
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention belongs to the technical field of packaging equipment, and particularly relates to a laser die-cutting machine for cutting an elastic film, which comprises a workbench, and an unwinding roller, a traction roller pair, a marking roller pair, a stamping roller pair, an image acquisition processing device, a deviation correction device, a laser die-cutting assembly and a winding roller which are sequentially arranged on the workbench, wherein the unwinding roller and the winding roller are positioned at the tail ends of the left side and the right side of the workbench, the marking roller pair can coat mark short lines on two side edges of the elastic film, and the deviation correction device receives processing data and deviation correction commands of the image acquisition processing device to correct deviation. The laser die-cutting machine provided by the invention can correct the deviation when one side of the elastic film is stretched, so that more waste materials are prevented from being generated in the subsequent laser die-cutting process, the adjustment frequency of the subsequent laser die-cutting assembly can be reduced, and the service life is prolonged.
Description
Technical Field
The invention belongs to the technical field of packaging equipment, and particularly relates to a laser die-cutting machine for cutting an elastic film.
Background
With the rapid development of the printing and packaging industry, the precision processing requirement of the market on packaging materials is higher and higher. Most of die cutting machines for cutting packaging materials in the market need to manufacture a die cutting knife plate firstly, the manufacturing of the knife plate is time-consuming and labor-consuming, and the arrangement and the complexity of patterns are greatly limited.
The Tianjin Changrong science and technology group limited company discloses a laser die cutting machine in Chinese patent document CN214236767U, which comprises a paper feeding assembly, an indentation assembly, a conveying assembly, a video positioning assembly, a laser die cutting assembly, a waste cleaning assembly and a paper collecting device, wherein the paper feeding assembly, the indentation assembly, the conveying assembly, the laser die cutting assembly, the waste cleaning assembly and the paper collecting device are sequentially connected, the video positioning assembly is arranged at the input end of the laser die cutting assembly, the indentation assembly forms at least one indentation on the front side or the back side of paper according to processing requirements, the video positioning assembly positions the paper entering the laser die cutting assembly, and the laser die cutting assembly performs die cutting on the paper in an area outside the indentation according to the positioning of the video positioning assembly. The device adopts a combination mode of video positioning and laser die cutting, so that the die cutting precision is improved; die cutting and indentation work are integrated on one device to be completed, paper feeding times are reduced, production efficiency is improved, the number of workers is reduced, and labor cost is reduced. However, the laser die cutting machine provided in the patent document is not suitable for cutting a sheet, and is not provided with a deviation correcting device, and the deviated sheet cannot return to a normal position. If there is the paper skew, it adopts laser cutting subassembly to carry out the cross cutting to the paper according to the mode of video positioning component to the location of paper to handle, and this cross cutting mode will make laser cutting subassembly frequently adjust equipment to the paper of different positions, and this is unfavorable for the improvement of cross cutting efficiency, also can reduce the life of laser cutting subassembly.
Chinese patent document CN103331525a discloses a numerical control laser die cutting machine, which is a laser die cutting machine for performing die cutting on elastic coil stock. In order to solve the problems that deviation, overlapping and the like are easily generated in the process of unwinding, winding and die cutting of an elastic coil material, the defective rate of die-cutting products is high, even die-cutting equipment cannot work, deviation rectification and adjustment of the coil material are required to be stopped frequently, otherwise patterns cut by a die deform and deviate, and the like, the document provides a numerical control laser die-cutting machine which has the characteristics of automatic unwinding, automatic deviation rectification and automatic winding, is suitable for the elastic coil material, and is flexible and adjustable. However, the document only uses a common deviation-correcting and guiding frame to guide the film paper back to the correct position by using a common circular roller with the same diameter and moving the circular roller in the opposite direction for a certain distance. In the case of stretching of one side of the elastic web, the device provided does not allow smooth deviation correction.
At present, a deviation correcting device for a laser die cutting machine is usually used for correcting the deviation of a material to be die-cut by adopting a common deviation correcting guide frame and utilizing the deflection of a round roller with the same diameter aiming at the condition that the material to be die-cut is a non-elastic material. The method cannot adapt to the situation that the elastic film is stretched on one side when laser die cutting is carried out, and the invention designs the laser die cutting machine for cutting the elastic film, which can solve the technical problem.
Disclosure of Invention
In order to solve the technical problem, the invention provides a laser die-cutting machine for cutting an elastic film, which can correct the deviation when one side of the elastic film is stretched, avoid more waste materials generated in the subsequent laser die-cutting process, reduce the adjustment frequency of a subsequent laser die-cutting assembly and prolong the service life.
In order to achieve the above purpose and solve the corresponding technical problems, the invention adopts the following technical scheme:
the utility model provides a laser die-cutting machine for cutting elastic film, includes the workstation and sets gradually the unwinding roller, carry over pinch rolls pair, mark roller pair, impression roller pair, image acquisition processing apparatus, deviation correcting device, laser cross cutting subassembly and wind-up roll on the workstation, and unwinding roller and wind-up roll are located the left and right sides terminal department of workstation, and mark roller pair can be to the both sides limit coating sign short line of elastic film, and deviation correcting device receives image acquisition processing apparatus's processing data and the order of rectifying and rectifies.
Furthermore, the carry over pinch rolls comprise two upper and lower carry over pinch rolls, and the mark roller is to constituteing by the marking roller of top and the backing roll of below, and elastic film passes in proper order between two upper and lower carry over pinch rolls and between the marking roller and the backing roll of mark roller pair, and unreeling roller, carry over pinch rolls to and mark roller pair are as the power supply drive rotation and keep the same linear velocity by same driving motor.
Furthermore, the marking roller of the marking roller pair comprises a roller body, one side of the circumferential part of the two ends of the roller body in the length direction is provided with a groove, the bottom of the groove is fixedly provided with a spring back plate, one side of the spring back plate is fixedly connected with one end of a plurality of first springs, the other ends of the plurality of first springs are fixedly connected with a spring front plate, sponge is filled between the spring back plate and the spring front plate, one side of the spring front plate, which is away from the first springs, is fixedly provided with a printing plate, and the printing plate protrudes out of the circumferential surface of the roller body and can retract to the circumferential surface of the roller body when the first springs are compressed; the printing plate is vertical to the surface of the spring front plate, and the spring front plate is vertical to the radius of the roller body; the limiting plate is arranged on the side edge of the groove between the spring back plate and the spring front plate, a plurality of through holes communicated with the sponge are formed in the printing plate, and the tail ends of the through holes are arranged on the same straight line.
Furthermore, the through hole is vertical to the surface of the front spring plate, and the extension line of the through hole passes through the circle center of the section of the roller body. The bottom surface at the printing plate sets up a plurality of hemisphere bumps, and the inside of hemisphere bump is equipped with the through-hole and communicates with the through-hole, and every hemisphere bump corresponds a through-hole.
Further, the embossing roller pair is composed of an upper embossing roller and a lower embossing roller, and the elastic film passes through the space between the upper embossing roller and the lower embossing roller. The surface of the upper embossing roller and/or the lower embossing roller is engraved with a template, and the surface of the elastic film is printed with a specific pattern or indentation by the cooperation of the upper embossing roller and the lower embossing roller. Furthermore, the upper embossing roller and/or the lower embossing roller are/is arranged to be a hot roller, so that the template on the surface of the upper embossing roller and/or the lower embossing roller is in a heated state, and after the template is contacted with the elastic film, a specific pattern or indentation can be branded.
Furthermore, the image acquisition processing device comprises a light beam rod, a video positioning assembly and a data processor, wherein the light beam rod stretches across the elastic film arranged above the workbench and can emit light beams perpendicular to the surface of the elastic film and the advancing direction towards the elastic film below, the video positioning assembly is arranged on one side of the light beam rod and shoots the position of the light beam, after the photo is analyzed by the data processor, if the elastic film deflects, the data processor sends a deviation rectifying instruction and corrects the deviation of the elastic film by the deviation rectifying device.
Further, the deviation correcting device comprises two deviation correcting rollers and a deviation correcting guide frame, the two deviation correcting rollers are arranged on the deviation correcting guide frame, each deviation correcting roller comprises a rotating shaft, a telescopic cylinder, a conical table, an arc-shaped separation block, a second spring, a V-shaped limiting column, a telescopic rod and a V-shaped fixing rod, a plurality of arc-shaped separation blocks are arranged in the circumferential direction of the rotating shaft, one ends of the arc-shaped separation blocks are fixedly connected with the top end of the V-shaped fixing rod, the bottom ends of the V-shaped fixing rods are hinged to the rotating shaft, a plurality of telescopic rods are arranged in the direction, away from the hinged ends, of the arc-shaped separation blocks at intervals, the second springs are sleeved outside the telescopic rods, one ends of the telescopic rods and the second springs are fixedly connected with the rotating shaft, the other ends of the telescopic rods and the second springs are fixedly connected with the arc-shaped separation blocks, the V-shaped limiting columns are arranged between adjacent telescopic rods, the bottom ends of the V-shaped limiting columns are fixedly connected with the rotating shaft, the heights of the V-shaped limiting columns are the same as the distances between the arc-shaped separation blocks and the rotating shaft, and when the arc-shaped separation blocks are surrounded into a cylinder shape; a ring is fixedly arranged at the position, far away from the hinged end, of the rotating shaft, a plurality of telescopic cylinders are uniformly and fixedly arranged on the ring, the other end of each telescopic cylinder is fixedly connected with the bottom end of the conical table, the conical table is movably arranged on the rotating shaft in a penetrating mode, and the minimum diameter of the top end of the conical table is smaller than the diameter of a cylinder formed by the plurality of arc-shaped partition blocks in a surrounding mode, so that the top end of the conical table can be inserted into one end of the cylinder; at least two balls are arranged on one side, close to the conical table, of each arc-shaped separation block, and the surface of the conical table is attached to the balls.
Furthermore, after the plurality of arc-shaped separation blocks are enclosed to form a cylinder, a gap of 1-10mm exists between the edges of the adjacent arc-shaped separation blocks.
Furthermore, the two deviation rectifying rollers are sequentially arranged in the front and back direction of the conveying direction of the elastic film, and one sides of the two deviation rectifying rollers, including the conical tables, are respectively positioned at two sides of the elastic film.
Furthermore, a collecting frame is arranged between the laser die cutting assembly and the winding roller to collect the elastic film after laser die cutting.
The invention has the following beneficial effects:
1. the invention provides a laser die-cutting machine for cutting an elastic film, which is characterized in that when the laser die-cutting machine works, the elastic film is discharged from a unwinding roller, the elastic film is sequentially pulled by a pulling roller pair, then marking short lines on two side edges of the elastic film by a marking roller pair, and then after photographing and analyzing by an image acquisition and processing device, the deviation is corrected by using a specific deviation correcting device designed by the invention, so that the laser die-cutting machine is suitable for various deflection conditions of the elastic film.
2. The invention provides a laser die cutting machine for cutting an elastic film, wherein a deviation correcting device with a specific structure has multiple advantages, can adjust the shape of a deviation correcting roller, adapts to the condition that different sides of the elastic film are stretched to deflect, avoids more waste materials generated in the subsequent laser die cutting process, greatly reduces the adjusting frequency of subsequent laser die cutting components, prolongs the service life and reduces the comprehensive use cost of equipment.
3. The invention provides a laser die-cutting machine for cutting an elastic film, which comprises a specific marking roller pair and an image acquisition processing device, wherein the marking roller pair marks the side edge of the elastic film, and a light beam formed by subsequent light beam rod irradiation is used as a reference line, so that a marking line or a reference line cannot be formed in most areas of the surface of the elastic film, and the appearance is further influenced. In addition, the hemispherical convex points at the tail end of the printing plate below the marking roller can avoid damaging the elastic film as much as possible, and meanwhile, the hemispherical convex points can be used for forming point-like concave pits which are connected into straight lines to form the mark short line of the side edge of the elastic film, so that the mark short line can be still formed when the ink is insufficient, and the use of the ink can be reduced or even avoided. After the identification short line formed by connecting the dot-shaped pits is used for image analysis, the dot-shaped pits on the elastic film can be slowly recovered, and further the influence of the marking roller on the side edge of the elastic film is further reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic layout of the components of the laser die cutting machine of the present invention.
Fig. 2 is a schematic diagram of the marking device of the marking roller pair of the laser die cutting machine for marking the elastic film.
Fig. 3 is a schematic view of the marking device of the marking roller pair of the laser die cutting machine of the present invention when it is not in contact with the elastic film.
Fig. 4 is a cross-sectional view of a marking roller pair of the laser die cutter of the present invention.
Fig. 5 is an enlarged view of the area B in fig. 4.
Fig. 6 is a perspective view of the rectification roller of the laser die cutting machine of the present invention in an undeformed state.
FIG. 7 is a perspective view of the rectification roller of the laser die cutting machine in a deformed state.
Fig. 8 is a cross-sectional view of a rectification roller of the laser die cutting machine of the present invention in an undeformed state.
Fig. 9 is a cross-sectional view of a rectification roller of the laser die cutting machine of the present invention in a deformed state.
Fig. 10 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 8.
FIG. 11 is a schematic view of a laser die cutter of the present invention with a conveyed elastic film undeflected.
Fig. 12 is a schematic view of one side of the elastic film conveyed by the laser die cutter according to the present invention, which is subjected to tensile deformation.
Fig. 13 is a schematic view of the other side of the conveyed elastic film of the laser die cutter according to the present invention, which is subjected to tensile deformation.
Fig. 14 is a schematic view illustrating the entire elastic film fed by the laser die cutter of the present invention when deflected.
Reference numerals are as follows:
1. unwinding rollers; 2. a pair of pulling rolls; 3. a pair of marking rollers; 4. a pair of embossing rollers; 5. a beam rod; 6. a video positioning component; 7. a guide roller; 8. a deviation rectifying roller; 9. laser die cutting of the assembly; 10. a collection frame; 11. a wind-up roll; 301. a printing roller; 302. a support roller; 303. a spring back plate; 304. a spring front plate; 305. a printing plate; 306. a first spring; 307. a limiting plate; 801. a rotating shaft; 802. a telescopic cylinder; 803. a conical table; 804. an arc-shaped partition block; 805. a ball bearing; 806. a second spring; 807. a limiting ring; 808. a V-shaped limiting column; 809. a telescopic rod; 810. a V-shaped fixing rod.
Detailed Description
The technical scheme of the invention is further explained by combining the drawings in the specification. The details of the present invention are not described in detail, and the present invention is applicable to the prior art, including but not limited to the patent technology mentioned in the background section, and will not be described herein.
As shown in figure 1, a laser die-cutting machine for cutting elastic films comprises a workbench (not shown in the figure), and an unwinding roller 1, a traction roller pair 2, a marking roller pair 3, a stamping roller pair 4, an image acquisition processing device, a deviation correction device, a laser die-cutting assembly 9 and a winding roller 11 which are sequentially arranged on the workbench, wherein the unwinding roller 1 and the winding roller 11 are positioned at the tail ends of the left side and the right side of the workbench, the marking roller pair 3 can coat mark short lines on two side edges of the elastic films, and the deviation correction device receives processing data and deviation correction commands of the image acquisition processing device to correct the deviation.
The carry over pinch rolls 2 comprises two upper and lower carry over pinch rolls, and the marking roll 3 comprises marking roll 301 and the backing roll of below of top, and elastic film passes between two upper and lower carry over pinch rolls and between marking roll 301 and the backing roll of marking roll pair 3 in proper order, unreels roller 1, carry over pinch rolls 2 and marking roll pair 3 and is regarded as the power supply drive rotation and keep the same linear velocity by same driving motor.
The marking roller 301 of the marking roller pair 3 comprises a roller body, one side of the circumferential part of the two ends of the roller body in the length direction is provided with a groove, the bottom of the groove is fixedly provided with a spring back plate 303, one side of the spring back plate 303 is fixedly connected with one end of a plurality of first springs 306, the other ends of the plurality of first springs 306 are fixedly connected with a spring front plate 304, sponge is filled between the spring back plate 303 and the spring front plate 304, a printing plate 305 is fixedly arranged on one side of the spring front plate 304, which is far away from the first springs 306, and the printing plate 305 protrudes out of the circumferential surface of the roller body and can retract to the circumferential surface of the roller body when the first springs 306 are compressed; the printing plate 305 is perpendicular to the surface of the spring front plate 304 and the spring front plate 304 is perpendicular to the roller radius; a limiting plate 307 is arranged on the side edge of the groove between the spring back plate 303 and the spring front plate 304, a plurality of through holes communicated with the sponge are formed in the printing plate 305, and the tail ends of the through holes are in a straight line. In fig. 3, the through hole is perpendicular to the surface of the spring front plate 304, and the extension line of the through hole passes through the center of the roller section. Further, as shown in fig. 4 to 5, a plurality of hemispherical bumps may be further disposed on the bottom surface of the printed board 305, and a through hole is disposed inside each hemispherical bump and is communicated with the through hole, and each hemispherical bump corresponds to one through hole. When using, the inside printing pigment such as printing ink that stores of sponge, when installing printing plate 305 on the printing roller and the backing roll contact of below, printing plate 305 extrudes first spring 306, and then makes the printing pigment such as the inside printing pigment of sponge pass through behind through-hole and the through-hole, and is printed printing pigment such as printing ink on the elastic film. Due to the arrangement of the hemispherical convex points, the elastic film can be extruded on the surface of the elastic film to form point-shaped concave pits, a straight line formed by connecting a plurality of point-shaped concave pits is collinear with a straight line formed by printing ink, and when the printing ink is insufficient, the straight line formed by connecting the plurality of point-shaped concave pits can also be used as a marking line. Meanwhile, due to the arrangement of the hemispherical convex points, the elastic film is not easy to extrude and damage. During the pressing, the restriction plate 307 can restrict the retreat displacement of the spring front plate 304 and the printing plate 305.
The embossing roller pair 4 is composed of an upper embossing roller and a lower embossing roller, and the elastic film passes through the space between the upper embossing roller and the lower embossing roller. The surface of the upper embossing roller and/or the lower embossing roller is engraved with a template, and the surface of the elastic film is printed with a specific pattern or indentation by the cooperation of the upper embossing roller and the lower embossing roller. Preferably, the upper embossing roller and/or the lower embossing roller can be set as a hot roller, so that the template on the surface of the upper embossing roller and/or the lower embossing roller is in a heated state, and after the template is contacted with the elastic film, a specific pattern or indentation can be branded, and the disappearance of the imprinted trace due to the rebound effect of the elastic film can be avoided. Of course, the pair of platen rollers 4 may form a specific pattern on the surface of the elastic film by ink printing.
The image acquisition processing device comprises a light beam rod 5, a video positioning assembly 6 and a data processor, wherein the light beam rod 5 stretches across the upper part of the workbench and can emit light beams perpendicular to the surface of the elastic film and the advancing direction towards the elastic film below, the video positioning assembly 6 is arranged on one side of the light beam rod 5 and takes pictures of the position of the light beams, after the pictures are analyzed by the data processor, if the elastic film deflects, the data processor sends a deviation rectifying instruction and utilizes a deviation rectifying device to rectify the deviation of the elastic film.
The deviation rectifying device comprises two deviation rectifying rollers 8 and a deviation rectifying guide frame, wherein the two deviation rectifying rollers 8 are arranged on the deviation rectifying guide frame (the deviation rectifying guide frame is the prior art and not shown in the drawing), as shown in fig. 6-10, each deviation rectifying roller 8 comprises a rotating shaft 801, a telescopic cylinder 802, a conical table 803, an arc-shaped separation block 804, a second spring 806, a V-shaped limit column 808, a telescopic rod 809 and a V-shaped fixing rod 810, a plurality of arc-shaped separation blocks 804 are arranged in the circumferential direction of the rotating shaft 801, one end of each arc-shaped separation block 804 is fixedly connected with the top end of the V-shaped fixing rod 810, the bottom ends of the V-shaped fixing rods 810 are hinged to the rotating shaft 801, a plurality of telescopic rods 809 are arranged at intervals in the direction away from the hinged ends of the arc-shaped separation blocks 804, the second springs 806 are sleeved outside the telescopic rods 809, one ends of the telescopic rods 809 and the second springs 806 are fixedly connected with the rotating shaft 801, the other ends of the telescopic rods 809 and the second springs 806 are fixedly connected with the arc-shaped separation blocks 804, the V-shaped limit columns 808 are arranged between adjacent telescopic rods 809, the V-shaped limit columns 808, the bottom ends of the V-shaped limit columns 808 are fixedly connected with the rotating shaft 801, and the arc-shaped limit columns are abutted to form a plurality of cylindrical separation blocks with the cylindrical separation blocks 808, and the cylindrical separation blocks when the cylindrical separation blocks 808 are combined with the cylindrical separation blocks 804, and the cylindrical separation blocks 804 with the cylindrical separation blocks 804; the pivot 801 is kept away from the fixed ring that is provided with of articulated end department, evenly fixedly on the ring be provided with a plurality of telescopic cylinder 802, telescopic cylinder 802's the other end and the bottom fixed connection of toper platform 803, and on the pivot 801 was worn to locate in the activity of toper platform 803, the top minimum diameter of toper platform 803 was less than a plurality of arc spacer blocks 804 and encloses the columniform diameter that closes the formation for the top of toper platform 803 can insert columniform one end. Further, at least two balls 805 are arranged on one side of each arc-shaped separation block 804 close to the conical table 803, and the surface of the conical table 803 is attached with the balls 805. By arranging the ball 805, the tapered platform 803 is pushed by the telescopic cylinder 802 to extend into or withdraw from the cylindrical shape more smoothly, and the cylindrical shape formed by the enclosing of the arc-shaped separation block 804 is favorably changed rapidly. Furthermore, a limiting ring 807 is fixedly arranged on the rotating shaft 801, so that the depth of the conical table 803 extending into the cylindrical inner part can be limited, and the situation that the bottom end of the conical table 803 cannot retreat and is clamped after passing over the ball 805 is avoided. Furthermore, after the plurality of arc-shaped separation blocks 804 are enclosed to form a cylinder, a gap of 1-10mm exists between the edges of the adjacent arc-shaped separation blocks 804. The size of the specific gap can be selected according to actual needs. The gap is arranged, so that the phenomenon that the elastic film is clamped by the arc-shaped separation block 804 in the repeated extending process of the conical table 803 to cause damage to the elastic film can be avoided. In fig. 10, six arc-shaped separation blocks 804 are shown to form a cylinder, and a certain gap exists between two adjacent arc-shaped separation blocks 804.
In fig. 1, two rectification rollers 8 are arranged in the front-rear direction of the conveyance direction of the elastic film in this order, and one side of each rectification roller 8 including the tapered table 803 is located on each side of the elastic film. This allows for easy adjustment of different deflection conditions.
FIG. 11 shows a schematic representation of the delivered elastic film of the laser die-cutting machine of the present invention when no deflection occurs. The marking short lines formed on the two side edges of the elastic film by the marking roller pair 3 are vertical to the two side edges of the elastic film, the two marking short lines can be connected to form a straight line, and the straight line is parallel to the light beams irradiated on the surface of the elastic film by the light beam rod 5. At the moment, the elastic film does not deflect, the two deviation correcting rollers 8 arranged on the deviation correcting and guiding frame keep a cylindrical state to convey the elastic film, and the deviation correcting and guiding frame is not needed to carry out deviation correcting work. Fig. 12 and 13 are schematic views of one side or the other side of the conveyed elastic film of the laser die-cutting machine according to the present invention, respectively, being subjected to tensile deformation. During the conveyance of the elastic film, stretching may occur, and due to external factors, an error in the pair of platen rollers 4, and the like, the elastic film may be subjected to stretching deformation on one side, but the conveyance direction of the entire elastic film remains substantially unchanged (the edge of the elastic film shown in fig. 12 remains horizontal). FIG. 13 is a view similar to FIG. 12 showing the other side of the elastic film undergoing stretch deformation. In fig. 12, both sides of the elastic film are stretched unevenly, so that the marking short lines printed on both sides of the elastic film by the pair of marking rollers 3 are inclined, the two marking short lines form an angle a1 with the light irradiated by the light beam rod 5, and the displacement difference between both sides reaches d1. In fig. 13, both sides of the elastic film are stretched unevenly, so that the marking short lines printed on both sides of the elastic film by the pair of marking rollers 3 are inclined, the two marking short lines form an angle of a2 with the light beam formed by the irradiation of the light beam rod 5, and the displacement difference between both sides reaches d2. At the moment, the video positioning assembly 6 is used for photographing the position of the light beam, the data processor is used for analyzing the position of the light beam, a deviation rectifying command is sent out, and the deviation rectifying device is used for rectifying the deviation of the elastic film. The two deflection rollers 8 are arranged in tandem, and the side provided with the conical table 803 is located on both sides of the elastic film, so that they can work for different deflection situations.
FIG. 14 is a schematic view showing the entire elastic film fed by the laser die cutting machine according to the present invention deflected. When the elastic film is unstretched but deflected as a whole, the side edges of the elastic film form an angle b with the horizontal. At this time, the two deviation rectifying rollers 8 are both in a cylindrical state, and the elastic film is rectified by utilizing the deviation rectifying guide frame.
It can be seen that, in this embodiment, the two deviation rectification rollers 8 with specific structures are arranged on the deviation rectification guide frame, so that the deviation rectification device can adapt to various deflection conditions that the elastic film is unevenly stretched or is deflected integrally, and the problem that the elastic film may appear in the subsequent laser die cutting process is avoided.
Between the laser die cutting assembly 9 and the winding roller 11, a collecting frame 10 may be provided to collect the elastic film after laser die cutting.
The working process of the laser die-cutting machine for cutting the elastic film of the embodiment is as follows: the method comprises the following steps that an elastic film is discharged from a unwinding roller 1, the elastic film is sequentially pulled by a traction roller pair 2, then short marking lines are marked on two side edges of the elastic film through a marking roller pair 3, at the moment, the elastic film does not deflect, then the elastic film is impressed through an impressing roller pair 4, then photographing analysis and data processing are carried out through an image acquisition processing device, and if the elastic film deflects, a data processor of the image acquisition processing device sends a deviation rectifying instruction to a subsequent deviation rectifying device; elastic film is guided by guide roller 7 after passing through image acquisition processing apparatus, gets into two and sets up the roller 8 that rectifies on the guide frame that rectifies, if takes place to deflect, then rectifies, and elastic film after rectifying gets into laser cutting subassembly 9 and carries out the cross cutting, and the material after the cross cutting is collected in collecting frame 10, and leftover bits are by the rolling of wind-up roll 11.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a laser cross cutting machine for cutting elastic film which characterized in that: the automatic correction device comprises a workbench, and an unwinding roller (1), a traction roller pair (2), a marking roller pair (3), a stamping roller pair (4), an image acquisition processing device, a correction device, a laser die cutting assembly (9) and a winding roller (11) which are sequentially arranged on the workbench, wherein the unwinding roller (1) and the winding roller (11) are positioned at the tail ends of the left side and the right side of the workbench, the marking roller pair (3) can coat mark short lines on two side edges of an elastic film, and the correction device receives processing data and a correction command of the image acquisition processing device to correct the position;
the deviation rectifying device comprises two deviation rectifying rollers (8) and a deviation rectifying guide frame, wherein the two deviation rectifying rollers (8) are arranged on the deviation rectifying guide frame, each deviation rectifying roller (8) comprises a rotating shaft (801), a telescopic cylinder (802), a conical table (803), arc-shaped separation blocks (804), a second spring (806), a V-shaped limiting column (808), a telescopic rod (809) and a V-shaped fixing rod (810), a plurality of arc-shaped separation blocks (804) are arranged in the circumferential direction of the rotating shaft (801), one end of each arc-shaped separation block (804) is fixedly connected with the top end of each V-shaped fixing rod (810), and the bottom end of each V-shaped fixing rod (810) is hinged to the rotating shaft (801), the direction interval that articulated end was kept away from in arc partition block (804) sets up a plurality of telescopic links (809), telescopic link (809) overcoat is equipped with second spring (806), telescopic link (809) with the one end of second spring (806) all with pivot (801) fixed connection, telescopic link (809) with the other end of second spring (806) all with arc partition block (804) fixed connection, it is adjacent be provided with spacing post of V-arrangement (808) between telescopic link (809), the bottom of spacing post of V-arrangement (808) with pivot (801) fixed connection, the height of spacing post of V-arrangement (808) with between arc partition block (804) and pivot (801) the height of spacing post of V-arrangement (808) The distances of the arc-shaped spacing blocks are the same, so that when the arc-shaped spacing blocks are surrounded into a cylinder shape, the top ends of the V-shaped spacing columns (808) are just abutted to the arc-shaped spacing blocks (804); a circular ring is fixedly arranged at the position, far away from the hinged end, of the rotating shaft (801), a plurality of telescopic cylinders (802) are uniformly and fixedly arranged on the circular ring, the other end of each telescopic cylinder (802) is fixedly connected with the bottom end of the corresponding conical table (803), the conical tables (803) are movably arranged on the rotating shaft (801) in a penetrating mode, and the minimum diameter of the top ends of the conical tables (803) is smaller than the diameter of a cylinder formed by the enclosing of the arc-shaped separating blocks (804), so that the top ends of the conical tables (803) can be inserted into one end of the cylinder; at least two balls (805) are arranged on one side, close to the conical table (803), of each arc-shaped separation block (804), and the surface of the conical table (803) is attached to the balls (805).
2. The laser die cutter for cutting an elastic film according to claim 1, wherein: the carry over pinch rolls comprises two upper and lower carry over pinch rolls to (2), the mark roller comprises the mark roller (301) of top and the backing roll of below to (3), and elastic film passes in proper order between two upper and lower carry over pinch rolls and between mark roller (301) and the backing roll of mark roller pair (3), unreel roller (1), carry over pinch rolls to (2) and mark roller pair (3) are rotatory and keep the same linear velocity as the power supply drive by same driving motor.
3. The laser die cutter for cutting an elastic film according to claim 1, wherein: the marking roller (301) of the marking roller pair (3) comprises a roller body, one side of the circumferential part of the two ends of the roller body in the length direction is provided with a groove, the bottom of the groove is fixedly provided with a spring back plate (303), one side of the spring back plate (303) is fixedly connected with one end of a plurality of first springs (306), the other end of the plurality of first springs (306) is fixedly connected with a spring front plate (304), sponge is filled between the spring back plate (303) and the spring front plate (304), one side of the spring front plate (304) departing from the first springs (306) is fixedly provided with a printing plate (305), and the printing plate (305) protrudes out of the circumferential surface of the roller body and can retract to the circumferential surface of the roller body when the first springs (306) are compressed; the printing plate (305) is perpendicular to a surface of the spring front plate (304) and the spring front plate (304) is perpendicular to the roller radius; a limiting plate (307) is arranged on the side edge of the groove between the spring back plate (303) and the spring front plate (304), a plurality of through holes communicated with sponge are formed in the printing plate (305), and the tail ends of the through holes are in the same straight line.
4. The laser die cutter for cutting an elastic film according to claim 3, characterized in that: the through hole is vertical to the surface of the spring front plate (304), and the extension line of the through hole passes through the center of the section of the roller body; the bottom surface of the printing plate (305) is provided with a plurality of hemispherical bumps, through holes are formed in the hemispherical bumps and are communicated with the through holes, and each hemispherical bump corresponds to one through hole.
5. The laser die cutter for cutting an elastic film according to claim 4, wherein: the embossing roller pair (4) consists of an upper embossing roller and a lower embossing roller, and the elastic film penetrates through the space between the upper embossing roller and the lower embossing roller; the surface of the upper embossing roller and/or the lower embossing roller is engraved with a template, and the surface of the elastic film is printed with specific patterns or indentations by utilizing the cooperation of the upper embossing roller and the lower embossing roller.
6. The laser die cutter for cutting an elastic film according to claim 5, wherein: image acquisition processing apparatus includes beam pole (5), video locating component (6) and data processor, beam pole (5) span the elastic film transmission perpendicular to elastic film surface and the direction of travel of setting in the workstation top and can face the below, video locating component (6) set up in one side of beam pole (5) and take a picture to the beam position, utilize data processor to carry out the analysis back to the photo, if the elastic film takes place to deflect, then data processor sends the instruction of rectifying a deviation and utilizes rectifying device rectifies a deviation to elastic film.
7. The laser die cutter for cutting an elastic film according to claim 1, wherein: after the arc-shaped separation blocks (804) are enclosed to form a cylinder, a gap of 1-10mm exists between the edges of the adjacent arc-shaped separation blocks (804).
8. The laser die cutter for cutting an elastic film according to claim 7, wherein: the two deviation rectifying rollers (8) are sequentially arranged in the front and back direction of the conveying direction of the elastic film, and one side of each deviation rectifying roller (8) comprising the conical table (803) is respectively positioned at two sides of the elastic film.
9. The laser die cutter for cutting an elastic film according to any one of claims 1 to 8, characterized in that: and a collecting frame (10) is arranged between the laser die cutting assembly (9) and the winding roller (11) to collect the elastic film after laser die cutting.
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| CN202210895867.2A CN114985985B (en) | 2022-07-28 | 2022-07-28 | Laser die cutting machine for cutting elastic film |
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