JP6548253B2 - Laminating device - Google Patents

Description

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a laminating apparatus which coats a surface of a print or the like with a glossy or matte film sheet to improve appearance or improve durability.

Examples of conventional laminators are those disclosed in Japanese Patent Application Laid-Open No. 2007-320304 (Patent Document 1) . In this product , the front and back ends of the sheet sheet fed out sequentially are overlapped, and in this state, the laminate film is continuously covered, and then the end of the laminate film of the overlapping portion is cut, and the cut is made The individual laminated paper is manufactured by applying tension to tear the laminated film.

JP 2007-320304 A

In the invention described in the patent document, the cut of the coated film sheet utilizes property of easily tearing the cover film sheet such as biaxially oriented polypropylene which is commonly used for the print lamination industry. That is, when the film sheet is scratched and tensioned at the end of the cutter, a crack runs and breaks in a direction perpendicular to the direction in which the tension is applied from the scratched portion.

However, the above-mentioned breaking means utilizes the characteristics of the film to be used to the last, and occurs frequently even when it does not go as expected. For example, in the breaking means, the broken shape and direction of the tear-broken film sheet are irregular, and a part of the broken film sheet protrudes from the end of the coated sheet, but the protruding film sheet is a product becomes obstacle to align, to adversely affect operations, such as the subsequent cutting step, also occurs to be redone in the worst case again becomes impossible accurate cutting.

In the breaking means, contrary to the example described above, the film sheet tears and breaks at an unintended portion, and the phenomenon of a coating defect in which the printing portion (plate surface) requiring coating on the inside of the sheet is not covered also occurs. However, such troubles significantly reduce the efficiency of work and the economic loss is also large.

  Further, the breaking means for scratching the end of the film sheet of the sheet with overlapping front and rear ends with a cutter may damage both of the film sheets coated on both sides with a laminator that simultaneously covers both sides It can not be used because it is impossible in principle.

  The present invention uses the film sheet for the conventional low-priced print lamination, and the work efficiency is extremely high by eliminating the film sheet's protrusion, covering defect, etc., and the complicated edge of sheet sheet is overlapped. It is an object of the present invention to provide a laminating apparatus which does not require a mechanism and is also applicable to a laminator which simultaneously coats a film sheet on both sides.

In order to solve the above problems, the laminating apparatus of the present invention feeds sheets while at least one mark on which at least one sensor of the cutting device reads is described at equal intervals or at the same time but and feeding step, and a coating step of coating without continuously stop film sheet on at least one surface of the fed single sheet, thereby stopping by slack single sheet of film sheet is continuously coated and stopping step, single sheet being stationary temporarily stop the flow of the single sheet the sensor reads the mark with out can pull the, cutting with cutting device comprising a fixed blade and cutting blade in conjunction with the sensor a cutting step of the cut has been single sheet a laminating apparatus comprising a stacking step of sequentially stacked on stocker, the retention step, the A dancer roller engaged with the sheet to be held is provided so as to be vertically movable and sensors are provided at the upper and lower sides, and the speed of the sheet delivered from the covering step is from the speed of the sheet in the cutting step. When setting the delay and raising the sheet while engaging with the dancer roller, when the upper sensor detects the sheet whose slack amount is insufficient due to the rising, the sheet in the cutting process When the speed of the leaf sheet is reduced or stopped, and the sheet is lowered while engaging with the dancer roller, and the lower sensor detects the sheet having a sufficient slack amount by the lowering. Returning the speed of the sheet in the cutting process to the original set speed, thereby engaging the sheet with the dancer roller The sheet is controlled to be raised while continuing, while adjusting the amount of slack within the required range in a state where the sheet held at an appropriate level is applied by the dancer sheet by the control, the following cutting step continues It is characterized in that the flow of the sheet is temporarily stopped to cut the sheet at the time of the cutting operation in .

At least a pair of heat rollers used in the coating process of the present invention may be, for example, one heat roller made of metal and the other a combination of rubber rollers for backup, or both of them may be silicone rubber etc. It does not matter if it consists of a heat roller incorporating the above. Further, two or more pairs of heat rollers may be disposed.

The sheet passing through the coating process passes while maintaining a certain distance under control of the feeding device or abuts the front and back ends of the sheet . For this reason, in the coating process, a mechanism for overlapping complicated sheet ends is not necessary, and the flow of the sheet passing through the process does not stop, so that the spot of the finish of the coating is generated. Absent.

The sheet which has been continuously coated with the film sheet in the coating step is in a state where a fixed amount is slackened by the next stopping step . That is, the amount of slack of the sheet in the continuous state is adjusted while being appropriately tensioned by using the dancer roller and the upper and lower sensors .

In the cutting device, a sensor for reading a mark written on the surface of the sheet is disposed upstream of the pair of nip rollers, and a so-called guillotine-type cutting device including a cutting blade and a fixed blade is disposed downstream. . The cutting action marks single sheet passing through the sensor flow single sheet at a position scheduled with the sensor reads once stopped is started, single sheet and it together coated film sheet It is a system to be sanctioned.

Note conventional laminator, it was intended to simply cover one by one single sheet, the laminating apparatus of the present invention takes readings of the mark on the single sheet, to cut plan position, sheet By describing a plurality of marks and printing surfaces on a sheet, it becomes possible to produce a plurality of separated printed products in which a film sheet is coated from a single sheet.

Since according to the laminating device single sheet may be simply put out Ri Repetitive equidistantly or by butt the paper end of the back and forth of the present invention, overlapping the end of the front and rear of a single sheet like the conventional laminator It does not require complicated equipment to fit.
Further , according to the laminating apparatus of the present invention, since the sheet and the film sheet coated therewith are simultaneously cut at the same time, accidents such as coating defects such as protrusion of the film sheet and uncoated plate surface do not occur.
Furthermore, according to the laminating apparatus of the present invention, not only the film sheet is simply coated on one sheet but also the printed matter described in plurals on one sheet is finished after being coated or cut. since cutting is also possible to or Tsu row, minimized time and effort in the downstream processing steps subsequent laminating apparatus.
Furthermore, in the conventional laminator, the film sheet can be cut only in the case of single-sided coating, but if the laminating apparatus of the present invention is used, accurate cutting can be performed without any problem even in the case of simultaneously coating both surfaces. can do.

It is a surface view of sheet S1 used for the example of the present invention. It is a principal part schematic which shows the process of the laminating apparatus of this invention. It is a top view which shows the state of sheet S1 drawn | fed out from a delivery apparatus at equal intervals. It is a top view which shows a mode that film sheet F is continuously coat | covered by sheet S1 by a coating apparatus. It is a flat plane diagram shows the operation of cutting a single sheet S1 in the continuous state to the laminate sheet RS1 single item in cutting device. It is a surface view of lamination sheet RS1 of single goods. (A) is a surface view of one sheet S2 having a plurality of printing plates printed thereon, and (B) is a surface view of a single laminate sheet RS2 cut out of the sheet S2. (A) is a surface view of the laminate sheet RS1 'in a state in which the cosmetic cutting in the vertical direction of the printing plate 1 is completed, (B) is a surface view of the laminate sheet RS2' in a state in which the cosmetic cutting in the vertical direction of the printing plate 2 is completed is there. FIG. 6 is a partial enlarged cross-sectional view of a film sheet F.

Hereinafter, embodiments of the present invention will be specifically described based on the drawings.
FIG. 1 is a front view of a sheet S1 used in the present embodiment. On the sheet S1, the plate surface 1 such as a poster or a flyer shown by a diagonal in a square frame is printed in the cutting marks (register marks) at the four corners , and a mark M for sensor reading to be described later Is described. The sheet S1 is covered with the film sheet F, and then cut in makeup by cutting marks (register marks) at the four corners, and is finally completed as a poster or flyer of a square frame size.

The sheet S1 configured as described above is stacked on the sheet loading table 11 disposed at the uppermost flow (left end) of the process of the laminating apparatus shown in FIG. Then, for example, by a sheet feeding device such as a suction pad 12 (a feed roller or the like), a pair of sheets S1 are sequentially drawn out one by one from the uppermost sheet S1 to the conveyance table on the right side. The sheet is sequentially fed in the state shown in FIG. 3 to a covering device composed of a pair of heat rollers 14a and 14b disposed further to the right by the nip rollers 13a and 13b.

In the covering device, the film sheet F is fed out from the roll waiting upward and is aligned with the covering planned surface of the surface of the sheet S1 passing by the pair of heat rollers 14a and 14b. As shown in FIG. 9, the film sheet F has a known heat-sensitive adhesive layer 31 formed on one surface of a substrate 30 made of, for example, biaxially oriented polypropylene, and the heating and adding of the heat rollers 14a and 14b. Both the sheet S1 and the film sheet F are strongly adhered as shown in FIG. 4 by the heat-sensitive adhesive layer 31 which exhibits adhesiveness by pressure treatment. Each sheet S1 is made continuous by the film sheet F, and is fed from the support roller 15 on the right side to a holding device provided with a dancer roller 16 disposed on the right side.

Incidentally, as shown in FIG. 4, since the space between the sheet S1 which has back and forth is wide, the heat sensitive adhesive layer 31 of the film sheet F is exposed in this space, but the surface of the heat rollers 14a and 14b. If a fluorine process is applied to the film sheet F, the film sheet F will not be stuck to the heat rollers 14a and 14b.

In the stopping device has to adjust the feed rate of the downstream process eg support rollers 15 and 19 (it may be a Both the pair of nip rollers) with slack single sheet S1 in the continuous state during, the continuum Mai leaf sheet S1 has tension is multiplied actively across more before and after the step a dancer roller 1 6. Incidentally, continuously sheetfed sheet S1 is from upstream of the coating apparatus of the stopping device is fed out by coating a film sheet F, a difference in conveying speed to stop temporarily during a cutting operation occurs downstream of the cutting device . Dancers low La 16 of the retention device and the difference is of us to adjust to move up and down.

For example, if the speed of the sheet S1 delivered from the covering device is set to be slower than the speed of the cutting device, the dancer roller 16 is raised. When the height of the sheet S1 rises, the sensor 18 reads the lack of slack of the sheet S1, slows or stops the speed of the cutting device, and the sheet S1 delivered from the covering device descends to the height of the sensor 17. Wait until sufficient slack is secured. That is, the dancer roller 16 moves up and down between the heights of the sensors 17 and 18 to adjust the amount of slack. In this way, since the coating apparatus is always operated at a constant speed, no spots are found on the finished state when the film sheet F is coated. In this case, even if the cutting device is stopped, the finished state is not affected at all. Then, the sheet S1 which has passed through the retention device is fed to the trimming device disposed on the right side.

  The cutting apparatus comprises a sensor 20, a pair of nip rollers 21a and 21b, a cutting blade 22a, and a fixed blade 22b. When the sensor 20 reads the mark M of the passing sheet S1 as shown in FIG. 5, the distance is counted and the flow is once stopped at the first cutting position L1 shown by the two-dot chain line to set the cutting position L1. Cut. The counting of the distance is further continued, and then the flow is temporarily stopped at the cutting position L2 indicated by the two-dot chain line in the same manner as described above, and the cutting is performed. Then, the cutting operation is continuously performed on the following sheet S1, and each sheet S1 is sequentially finished into a single laminate sheet RS1 shown in FIG.

  The laminate sheet RS1 finished in this manner is discharged to the right stocker 24 by, for example, a pair of nip rollers 23a and 23b and sequentially stacked. As described above, when the present laminating apparatus is used, the film sheet F does not protrude from the top-bottom direction of the sheet S1 or a portion not covered is generated, and the cutting operation is temporarily stopped and executed. There is no problem in the subsequent various processing steps because the position of the printing plate is exactly aligned.

The present invention is not limited to the above embodiment.
For example, as shown in FIG. 7A, when two plate faces 2 are printed on one sheet S2, if marking marks M for each plate face 2 are described, two sheets in the figure It cuts by L1-L4 shown by a dot-dash line, and as shown to FIG. 7 (B), the size of two sheets and the position of the plate surface 2 can cut out the same laminate sheet RS2 from one sheet S2.

  Also, if the planned cutting lines L1 to L4 are set at the same positions as the cutting marks (register marks) of the top and bottom of the printing plates 1 and 2, as shown in FIGS. 8A and 8B, Since the horizontal trimming of Tenchi is completed, the later trimming is completed only in the vertical direction. Therefore, it is convenient because it is possible to save time for cutting.

Further, in the present embodiment, the film sheet F is coated on one side of the sheet S1, however , even in the case of coating on both sides, it is possible to carry out in the same process. In this case, as shown by a broken line in FIG. 2, the film sheet F is fed out from the roll kept waiting downward, and the pair of heat rollers 14a, 14b aligns with the covering planned surface of the reverse side of the sheet S1. Good. And as described above, even in the case of simultaneous double-sided laminating which is impossible by the breaking means of the conventional laminator , according to the above-mentioned process, it becomes possible to cut accurately without causing the film sheet to stick out or leaving unbonded .

S1, S2 Sheet leaf RS1, RS2 , RS1 ', RS2' Laminated sheet F Film sheet M Mark L1, L2, L3, L4 Cutting schedule line 1, 2 Plate surface 11 Paper loading table 12 Suction pad 13a, 13b, 21a, 21b , 23a, 23b Nip rollers 14a, 14b Heat rollers 15, 19 Support rollers 16 Dancer rollers 17, 18, 20 Sensor 22a Cutting blade 22b Fixed blade 24 Stocker 30 Base material 31 Thermal adhesive layer

Claims (1)

A feeding step of feeding while butting at least cutting equally spaced or before and after the paper end one by one mark a single sheet that has been described above one plant sensor reads the device, the paid out single sheet at least one of a coating step of coating without continuously stop film sheet to the surface, pull the retention step of stopping by slack single sheet of film sheet is continuously coated, the single sheet being stationary temporarily stopping the flow of the single sheet the sensor reads the mark with out the cutting step of cutting at cutting apparatus comprising a fixed blade and cutting blade in conjunction with the sensor, the cut has been single sheet stocker a laminating apparatus comprising a stacking step of sequentially stacking, the the retention step, a dancer roller which engages the single sheet being the retention Downwardly movably provided, sensors are provided at the upper and lower sides, and the speed of the sheet delivered from the coating step is set to be slower than the speed of the sheet in the cutting step, and thereby the sheet is used as the dancer When the upper sensor detects a sheet that is raised while engaging with the roller and the amount of slack is insufficient due to the rise, the speed of the sheet in the cutting step is reduced or stopped and thereby the sheet The leaf sheet is lowered while in engagement with the dancer roller, and when the lower sensor detects a sheet which has become a sufficient slack amount by the lowering, the speed of the sheet in the cutting step is set to the original Controlling to return the speed and thereby raise the sheet in engagement with the dancer roller, by the control, With the tension applied by the dancer roller to the sheet being kept fixed while adjusting the amount of slack within the required range, the flow of the sheet is temporarily once during the cutting operation in the subsequent cutting step. A laminating apparatus characterized in that it is stopped to cut the sheet .

Images