JP5038173B2 - Printing film laminating sheet production equipment - Google Patents

Description

  The present invention relates to a printing sheet manufacturing apparatus that performs printing of a sheet by laminating a long printing film on the sheet. More specifically, a detection sensor is provided that can accurately detect when the end of the sheet of the sheet band supplied to the laminating pressure bonding part of the printing sheet manufacturing apparatus passes, The present invention relates to a printed sheet manufacturing apparatus in which a printed pattern of a laminate film exactly matches a predetermined position of a sheet.

Conventionally, a glossy resin film, for example, a polypropylene film, has been widely laminated to give a glossy gloss effect to the printed surface of a printed sheet or to protect the printed surface from scratches. It was. In other words, a wide variety of film laminating processes are used for multicolored sheet-fed printed products, where a thin and transparent polypropylene film is laminated on the printing surface to give a high-quality feel to the printed sheet and increase the strength of the paper. It is used.
In this case, predetermined offset printing or gravure printing is performed on the sheets, and the single-sheet printing sheets are continuously supplied to the laminating table in a banded state in which the edges of the sheets are successively stacked. Then, after a long roll-wrapped adhesive resin film is fed onto the continuous sheet of sheets and heated and bonded with a hot roll, the edge overlapped portion of the sheet is cut with a cutter, and then a single sheet is again formed. In other words, a printing paper having a glossy surface in which a transparent resin film is laminated on a printing sheet has been manufactured.
In this method, the offset-printed or gravure-printed sheet before laminating is temporarily stored in a laminated state immediately after printing, so that powder is spread on the printed surface so that the printed surface does not adhere. For this reason, printing has a cloudy color tone, resulting in a disadvantage that the sharpness is lowered. Furthermore, when an extremely thin resin film is laminated on the printed surface with the powder particles to give a glossy gloss effect, the fine protrusions of the powder particles on the printed surface appear as they are on the surface of the laminated resin film, Reduce the appearance of the print surface. If these fine protrusions are merely printed surfaces, they are not very conspicuous, but when the film is laminated on the print, the shadows of the protrusions are enlarged and bubbles are generated on the printed surface of the protrusions. Reduce the appearance.
In order to improve the defects of glossy printed sheets by laminating laminated sheets of printed sheets, printing is not performed on sheets but on the side of the resin film laminated on the sheets. Printing a single printed pattern as a repeated pattern, and laminating a laminate film with the printed pattern on a plain sheet of paper with the print side facing it, it looks as if it is printed on a sheet of paper Sheet paper has been proposed and widely used.
However, in the method of performing printing on the laminate film surface, it is naturally necessary to laminate the printed pattern of the resin film to be laminated accurately at a predetermined position on the sheet. The accuracy of this alignment is required to be the same as when printing directly on a sheet.
In this case, the alignment of the laminate film in the width direction of printing can be easily achieved by matching the widths of the laminate film and the sheet. However, the laminate film is fed at a high speed onto the sheet that moves on the conveyor belt. However, it is very difficult to accurately align the printed pattern of the laminate film to be pressed in the vertical direction. If they do not match exactly, in the continuous manufacturing method, deviations are accumulated and large deviations occur.
For this purpose, a photoelectric mark (also referred to as “register”) representing the position of the printed pattern of the laminate film that is continuously fed out is sensed at a certain distance before the crimping process, and on the other hand, It is necessary to send out the end of the sheet on the conveyor belt to the crimping process in accordance with the photoelectric mark detection timing of the sheet to be laminated with the printed pattern.
The applicant can temporarily block the feeding of the sheet band during feeding and adjust the feeding speed of the sheet on the conveyor belt in accordance with the detection timing of the photoelectric mark of the laminate film. A film laminating apparatus has been proposed (Patent Document 1).
However, since this method temporarily dams the sheet delivery, there is a drawback in that fine misalignment occurs between the conveyor belt and the sheet, and the accuracy of the alignment of the printed pattern is not sufficient. there were.
Further, in Patent Document 2, in the method of manufacturing a sheet that laminates a hologram film or a vapor deposition film, when it is detected that the hologram or vapor deposition pattern of the laminate film starts to deviate from a predetermined position on the sheet, A technique for correcting the position of a pattern that has started to shift by adjusting the feeding speed of a sheet fed to the paper is disclosed. In this technology, the misalignment of the pattern of the laminate film is detected by the timing of the sensor of the laminate film's gym (photoelectric mark) passing through the position immediately before the crimping process and the sheet of paper that jumps out of the sheet storage unit. Judgment is based on the width that the timing deviates from the scheduled timing.
Therefore, when the misalignment is sensed, the laminate film pattern is laminated on the sheet while being shifted, and in the laminate of the laminate film pattern to be laminated in a plurality of stages after this misaligned laminate sheet, This is the first correction mechanism, not the mechanism that corrects the pattern itself that is pressed before the detected misalignment is laminated and pressed, and the end of the sheet band after sensing the position of the sheet. Therefore, the time interval from the jumping out of the sheet from the paper feed to the crimping process is not always constant. For this reason, there is a drawback that a fine shift occurs between the lane meat pattern and a predetermined printing position of the sheet.
Japanese Patent No. 3400512 JP 2007-69369 A

In the present invention, when a printing surface resin film is laminated on a sheet, it is necessary to accurately store a predetermined printing pattern within the sheet size of the sheet, and it is continuously supplied onto a laminating table. This causes a difficult problem that the supply of the sheet must be completely matched with the repetition period of the printed pattern of the long laminate film.
The present invention is an apparatus capable of producing a laminated printed sheet in which a beautiful glossy printed matter is efficiently laminated using a sheet so that the printed pattern of the resin film exactly matches a predetermined position of the sheet. Is intended to provide.

The inventor forms a sheet band array by overlapping the end portions of the sheets continuously fed out from the paper stacking unit, and then passes the sheet band array to the laminating process by a conveyor belt. After the sheet edge stacking process, a change in thickness increases at the overlap end of the sheet band at a certain distance before the lamination process on the surface of the sheet band. A photoelectric sensor is provided at a certain distance before the laminating process of the long printed laminate film fed from the roll winding state. The sensor detects the mark and controls the servo motor speed control mechanism to change the conveyor belt transfer speed according to the time difference between the two sensors. At the time of crimping the shift of the printing pattern has led to the completion of the present invention found a means to reduce.
That is, the present invention is (1) printed pattern units and photoelectric elements at regular intervals on a sheet strip formed by sequentially polymerizing only the edges of 0.1 to 1.0 mm thick sheets. A laminating mechanism for laminating and fixing a long printed laminating film provided with mark printing, and a sheet of paper fed from a sheet stacking unit 1 to a pressure roll 7 by a transfer belt from a sheet stacking unit 1 using a servo motor 14 as a driving force. Paper feed mechanism 3, Laminate film transfer mechanism that rolls out a long rolled laminate film 12 by roll operation and continuously feeds it to the pressure roll 7, Detection mechanism when the end of the sheet band passes, Laminate film transfer mechanism Servo motor speed for changing the speed of the servo motor 14 of the sheet feeding mechanism 3 in accordance with the time difference between the signal of photoelectric mark printing sensed in step 1 and the passing timing signal of the end overlap portion of the sheet band. A device for laminating and printing on a sheet comprising a control mechanism and a cutter 20 for cutting the end overlapping portion of the stacked sheet band, wherein the sheet feeding mechanism 3 is a sheet On the transfer conveyor belt 4 continuously in a banded state in which the ends of the sheets are superposed so that the leading edge of the next sheet enters under the preceding sheet from the top of the sheet stacking unit 1. A sheet belt strip feeding section and a servo motor 14 that drives the transfer conveyor belt 4 to freely control the speed, and a detection mechanism when the sheet belt strip passes through an end portion of the sheet belt strip are fed to the laminating mechanism. Is installed so as to straddle the transfer conveyor belt 4 at a position separated by a certain distance before entering, and has a level difference detecting roll 15 that rotates in contact with the surface of the sheet band. Fine upward movement distance of the step detection roll 15 caused by the passage A superposition edge detection sensor 18 for sensing the passing time of the superposition edge of the sheet band by a reverse lever jig that expands the separation to a movement distance of the light receiving part that is five times or more of the movement distance; The laminate film transfer mechanism has a photoelectric mark sensor 16 that senses the passage time of the printed mark film photoelectric mark printing at a specific distance before the printed laminate film sheet enters the pressure roll 7, and the servo motor The speed control mechanism is a computer control system in which the photoelectric mark printing passage timing signal from the photoelectric mark sensor 16 and the passage timing signal of the edge overlapping portion of the sheet band from the overlapping edge detection sensor 18 are input. When the laminating mechanism laminates and presses the sheet strip and the long print laminate film based on the deviation time of the passage time signal of both Then, the servo motor speed control for automatically increasing / decreasing the speed of the servo motor 14 so that the photoelectric mark printing of the long printed laminate film 12 is laminated and fixed at a predetermined position on the sheet by correcting the above-mentioned misalignment time. Printing film laminate sheet manufacturing equipment, characterized by being a mechanism,
(2) The reverse lever jig is a reverse lever jig 26 in which a vertical bar having a light receiving portion at the tip is provided at a horizontal portion, and provided at the intersection of the shape of the reverse lever jig 26. The fixed shaft 25 is attached to the pedestal directly or indirectly so that the shaft can rotate freely, and the rotating shaft 23 of the step detecting roll 15 is attached to the downstream side of the flow of the conveyor belt of the reverse lever jig 26 so that the shaft can rotate freely. A printing film laminate sheet manufacturing apparatus according to claim 1,
(3) The printing film laminate sheet manufacturing apparatus according to item 1 or 2, wherein the photoelectric mark printing is a part of the print pattern of the long laminate film, and
(4) The printing film laminate sheet manufacturing apparatus according to item 1, 2 or 3, wherein the long printing laminate film is a polypropylene resin film;
Is to provide.

  According to the apparatus for producing a printed film laminate sheet according to the present invention, it is possible to detect the passage time of the end portion of the sheet having a thickness of 0.1 to 1.0 mm by the sensor of the overlapping end portion detection mechanism, and to the laminate film surface. In the production of a printed film laminate sheet for applying printing, the printed pattern of the resin film to be laminated can be accurately aligned with a predetermined position of the sheet.

The sheet used in the present invention is a single-sheet paper having a thickness of 0.1 mm or more, and is a ground-colored colored paper or a printed pattern to be laminated in harmony with the printing color of a blank white paper or resin film. Light colored printed paper that can be the background can be used.
The material of the sheet can be used without particular limitation as long as it is an opaque sheet and can be laminated with a resin film on the surface, and pulp paper, synthetic paper, opaque plastic sheet, etc. are used. be able to. Usually, pulp paper is most often used.
When the thickness of the sheet is less than 0.1 mm, it becomes difficult for the step detecting roll that rotates in contact with the surface of the sheet band of the present invention to sense the step at the end overlapping portion sensitively. . Even if the thickness exceeds 1.0 mm, the step detection roll method of the present invention can be applied. However, it is necessary to increase the diameter of the step detection roll, and usually the thickness of the sheet is 1.0 mm or less. preferable.
The sheets used in the apparatus of the present invention are fed to the transfer conveyor belt one after another in a continuous band form so that the ends slightly overlap each other when fed, and are transferred to the laminating table in a continuous band form. Is done. In a laminating table, a continuous printing film is continuously laminated on a continuous belt-like row and brought into close contact with a pressure roll, and then an overlapping portion with an adjacent sheet is cut off by cutting to obtain a printed resin film laminated sheet. .
As the long printing laminate film used in the apparatus of the present invention, a thin thermoplastic resin film having a thickness of about 20 to 100 μm can be used without any particular limitation. As a material, a polyolefin resin film, a polyolefin film such as a polyethylene film, Polyvinyl chloride films and laminate films thereof can be used, and particularly glossy polypropylene films, preferably printed biaxially oriented polypropylene films can be suitably used.
Gravure printing, letterpress printing, and lithographic printing can be used as the printing of the long printed laminate film of the present invention, and gravure printing is widely used as the printing of the resin film. In addition, according to the size of the sheet to be printed, the printed pattern of the long printed laminate film of the present invention is printed in a repetitive pattern at intervals of a certain length according to the size of the sheet to be printed, As for the type of printing, in addition to printing ink, a long printed laminate film having a pattern that needs to be aligned in lamination with a sheet of paper such as a hologram or metal vapor deposition film pattern is used in the present invention. can do. The printed pattern of the long printed laminate film of the present invention is preferably back printed from the viewpoints of print clarity and scratching properties.

As the long printed laminate film of the present invention, a film provided with photoelectric marks on the side edge of the film for positioning with the sheet paper separately from the printed pattern is used. The photoelectric mark can be printed on the side edge of the long printed laminate film. As another method, when a part of the printed pattern is a pattern that can also be used as a photoelectric mark, a part of the printed pattern can be used as the photoelectric mark.
The long printed laminate film used in the present invention is used by feeding a roll-wrapped film, and its material can be used without particular limitation as long as it is a printable resin. For example, polypropylene, polyester, polyethylene, polychlorinated A thermoplastic resin such as vinyl can be used. In particular, a biaxially stretched polypropylene film can be suitably used in terms of good gloss and transparency, vivid back printing, and strength.
The resin film used in the apparatus of the present invention is a roll film, and has been subjected to reverse printing with a predetermined pattern in advance. When used in the present invention, a laminating adhesive paste is applied, and after drying, the adhesive surface is laminated and adhered to the sheet side. As the adhesive for laminating, known adhesives used for laminating can be used without particular limitation.
Since the resin film of the apparatus of the present invention is laminated on a sheet of paper with the gravure printing surface of the resin film facing each other, it is applied as reverse printing with a correct pattern when viewed from the back side opposite to the printing surface. Therefore, since the gloss of the printed surface appears as it is on the surface, it is possible to obtain beautiful glossy printed paper having a gloss higher than that of the paper surface.
As a laminating mechanism used in the present invention, a known apparatus for film laminating and a dry laminating system or a wet laminating system can be used, and a dry laminating system is particularly desirable.
The overlapping edge detection sensor used in the present invention has a step detection roll on the bottom surface that rotates by contacting the surface of the transported sheet band being transferred from the sheet stacking unit to the laminating mechanism by the transfer conveyor belt. When the step detection roll passes through the overlapping end portion of the sheet strip being transferred on the conveyor belt, the step detection roll is caused to jump up by the thickness of the sheet at the overlapping end portion. Using a reverse lever that expands the fine upward movement distance to 5 times or more of the upward movement distance, the movement distance of the light receiving part is expanded to the movement distance of the photoelectric sensor part that is 5 times or more the thickness of the sheet. Thus, the end photoelectric sensor can detect when the overlapping end passes through the step detection roll by turning on and off the light from the light source due to the moving distance of the photoelectric sensor. Here, the reverse lever jig is a jig that applies a small displacement with a large force and converts the displacement into a large displacement with a small force. The simplest shape of the reverse lever is a straight shape, in which one of the seesaws is shortened, the force is applied to the shorter side and the other is moved greatly, the displacement part is at both ends, and the center of both The reverse lever jig can exhibit the reverse lever function even if it is not linear if the shaft rotation axis is offset from the position. The reverse lever jig of the present invention has a shape in which a photoelectric sensor portion is bent at a right angle at the position of the axis rotation axis of the reverse lever jig and a photoelectric sensor portion is provided at the tip of the vertical long axis. A format that converts to horizontal movement is particularly desirable. In this case, since the weight of the long axis with the photoelectric sensor part of the reverse lever jig is firmly supported by the shaft rotation axis, the photoelectric sensor part moves horizontally with respect to the vertical movement of the step detection roll. Reacts quickly without being affected by weight.
In addition, by bending the shape of the reverse lever jig at right angles to the vertical direction, the installation area on the sheet conveyor of the overlapping edge detection sensor can be reduced, and the length of the conveyor can be shortened. The advantage is great.
The reverse lever jig of the present invention is such that the distance from the axis rotation axis to the photoelectric sensor unit is 5 times or more the distance from the central axis rotation axis to the level difference detection roll, so that the overlap end of the level difference detection roll The displacement caused by the part can be enlarged five times or more. In other words, the structure that expands to 5 times or more of the present invention and the structure in which the distance from the shaft rotation axis to the photoelectric sensor unit is 5 times or more the distance to the step detection roll have a mathematically unique correlation.
With the reverse lever jig of 5 times displacement according to the present invention, the displacement of a fine step detection roll that cannot be accurately detected by a normal photoelectric sensor can be amplified 5 times or more and accurately detected by the photoelectric sensor.
The diameter of the step detection roll used for the overlapping edge detection sensor of the present invention is preferably 10 to 100 mm, more preferably 30 to 70 mm, and the width of the step detection roll is 5 to 20 mm. If the diameter of the step detection roll is less than 10 mm, smooth rotation becomes difficult, and there is a possibility that the step detection roll may be caught at the overlapping end portion of the sheet band. On the other hand, when the thickness exceeds 100 mm, the weight of the level difference detection roll itself increases, and the sensitivity of the level difference detection roll when passing through the polymerization end portion decreases. The diameter of the step detection roll can be appropriately selected according to the thickness of the sheet. If the width of the step detection roll is less than 5 mm, the stability of the roller rotation decreases, and if it exceeds 20 mm, the weight of the step detection roll itself increases and the sensitivity decreases. In the case where the thickness of the sheet is 0.2 to 2 mm, the diameter of the step detection roll is preferably about 40 to 60 mm, and the width of the step detection roll is preferably about 7 to 13 mm.
The position of the step detection roll on the sheet band is not particularly limited as long as it is above the width of the sheet band, but it is the sheet that rotates around the center line of the sheet band. This is desirable because the thickness of the overlapping edge of the paper is stable.

The present invention will be described in detail with reference to the drawings of the embodiments. The description of the embodiment does not limit the scope of the present invention.
FIG. 1 shows an embodiment of one aspect of a printing sheet manufacturing apparatus used in the present invention.
FIG. 2 is a control system diagram of the servo motor of the printing sheet manufacturing apparatus according to the embodiment of the present invention.
3 is a cross-sectional side view of the overlap end sensor 18 of the embodiment of FIG. The cross section of FIG. 3 is a schematic cross sectional view cut near the center line of the sheet band, and shows a state in which a connecting jig is attached to the support column 34.
4 is a side view of the overlap end sensor 18 of the embodiment of FIG.
FIG. 5 is a perspective view of the overlap end sensor 18 of the embodiment of FIG.
The long print laminate film roll-out mechanism used in the apparatus shown in FIG. 1 has a plurality of long print laminate film roll winding 21, drying chamber 9, photoelectric mark sensor 16, and a plurality of print routes that determine the long print laminate film 12. It consists of a rotating roll, and is the same as a known long printing laminate film feeding device.

The long printed laminate film 12 with photoelectric marks of the present invention is pulled by a pressure-bonding roll 7 (with a heater) driven by a main motor motor 6 and a pressure-receiving roll 8 opposed to the roll, and the long printed laminate at the left end of FIG. It is pulled out from the film roll 21. The long printed laminate film 12 drawn out from the roll is coated with a heat-sensitive adhesive by an adhesive application roll 13, enters from the left side of the drying chamber 9 and dries, then exits to the right side of the drying chamber 9, and turns into a reverse roll. The direction is changed, and the sheet is transferred leftward on the pressure-bonding table in the left horizontal direction, passes between the pressure-bonding roll 7 and the pressure-receiving roll 8, and is thermocompression-bonded to the sheet band. Next, the printed sheet can be obtained by cutting every predetermined length by the cutter 20.
In the embodiment apparatus shown in FIG. 1, the photoelectric laminate printing passage time of the printed laminate film is separated from the position of the alignment roll 5 before the printed laminate film sheet enters the pressure roll 7 by the distance of the length of the sheet. A photoelectric mark sensor 16 is provided to detect the timing of passage of the photoelectric mark on the laminate film.
The long printing laminate film (thickness 40 μm) made of polypropylene film in FIG. 1 can be fed by the main motor motor 6 that rotates at a steady speed. One main prime mover motor 6 drives the pressure-bonding roll 7 and the pressure-receiving roll 8 that rotates following this.
The apparatus of the present invention can basically drive the traction transfer of the long printed laminate film by the main motor motor 6. The printing of the long printing laminate film is performed on the printing frame of the sheet by synchronizing the transfer of the sheet band with the controllable drive of the servo motor in accordance with the transfer speed of the long printing laminate film. Patterns can be matched exactly.

First, the rotation speed of the servo motor is set by the keyboard 19 so that the supply speed of the long printing laminate film determined by the speed of the main motor is matched with the transport speed of the sheet band. Even if the rotation speeds of the main motor and the servo motor are matched by keyboard operation, the printing pattern of the long printed laminate film and the printing frame of the sheet are slightly shifted over time. This deviation is accumulated in continuous production. In the apparatus of the present invention, when a slight deviation occurs, the deviation can be eliminated or reduced for each sheet, so that the deviation is not eliminated but the deviation is not accumulated and increased.
1 is an apparatus for producing B-size printing paper using a sheet having a thickness of 0.2 mm. A sheet feeding mechanism 3 includes a sheet stacking unit 1, a transfer conveyor belt 4, and It consists of a support that supports the transfer conveyor belt 4 and is sequentially fed from the sheet stacking unit 1 onto the transfer conveyor belt 4 by the paper feeding soccer 2 using a suction cup, and at that time, under the preceding sheet of paper Then, the sheet is continuously fed onto the transfer conveyor belt 4 in the form of a sheet strip 11 in which the ends of the sheets are superposed so that the leading edge of the next sheet enters.
The transfer conveyor belt 4 is driven in a circular manner by a conveyor roll 10, and the conveyor roll 10 is driven by a servo motor 14 to increase or decrease the rotation speed in a controllable manner.
The sheet band in FIG. 1 is transferred to the pressure roll 7 by the transfer conveyor belt 4. A level difference detecting roll 15 that rotates in contact with the surface of the sheet band 11 at a position intermediate the transfer path and separated by the length of the sheet before the sheet band enters the laminating mechanism. There is provided an overlapping edge detection sensor 18 provided with an edge photoelectric sensor 17 for detecting the passage timing of the overlapping edge portion of the sheet band by a fine movement caused by the step.
The photoelectric mark sensor 16 for detecting the photoelectric tube mark used in the printing film feeding mechanism of the apparatus of the present invention is a photoelectric sensor that detects the photoelectric mark printed at the same time as the resin film printing and emits an electric signal. The sensor is installed by selecting a position where one frame of the printed pattern is exactly synchronized with the printing frame of the sheet. For example, when the photoelectric mark corresponds to the edge of the printed pattern, the photoelectric mark sensor 16 is printed at a position synchronized with the edge of the printing frame of the sheet.

The overlapping edge detection sensor 18 provided in the sheet feeding mechanism 3 of the apparatus of the present invention shown in FIG. 1 is located at a position separated by the length of the sheet from the alignment roll 5 before the sheet band is inserted into the laminating mechanism. Is provided.
In the apparatus of FIG. 1, when there is no deviation between the signal of the end photoelectric sensor 17 of the superposition end sensor 18 and the signal of the photoelectric mark sensor 16, the long printing laminate is used depending on the rotation speed of the main prime mover and the servo motor. The printed pattern of the film exactly matches the printing frame of the sheet.
When the signal of the end photoelectric sensor 17 of the overlapping end sensor 18 and the signal of the photoelectric mark sensor 16 are shifted, the rotation speed of the servo motor is automatically and rapidly increased by the computer processing of the control mechanism of FIG. Thus, the printing pattern of the long printed laminate film can be accurately matched with the printing frame of the sheet so as to eliminate the deviation between the two signals.
In the embodiment of FIG. 1, the photoelectric mark sensor 16 and the overlapping edge detection sensor 18 are provided at a position separated from the aligning roll 5 by one sheet length. It can be 1 to 4 times the length of the paper. If it is less than 1 time, the operation of increasing or decreasing the rotational speed of the servo motor is delayed, and if it exceeds 4 times, the accuracy of the position of the printed pattern slightly decreases.
The apparatus of the present invention is controlled by a control system diagram of a servo motor of the printing sheet manufacturing apparatus of the embodiment of FIG.
Increase / decrease adjustment of the transfer speed of the sheet band for printing pattern alignment is performed by changing the speed of the transfer conveyor belt 4 for transferring the sheet band row, and the change of the speed of the transfer conveyor belt 4 is provided with a servo motor. This encoder with a servo motor is automatically operated in response to a speed control instruction by a calculation of a controller that receives an input of a photoelectric mark sensor signal and an end photoelectric sensor signal.
It is conceivable to eliminate the printing pattern deviation by increasing or decreasing the supply speed of the long print laminate film. However, the long print laminate film 12 has a large elongation with respect to the tension, and the transfer speed of the long print laminate film 12 is high. Even if the value is increased or decreased, the reaction of increasing or decreasing the film transfer speed is slow due to the elongation of the film. On the other hand, since the sheet band is transferred by the transfer conveyor belt 4 having no elongation, the speed increase / decrease by the servo motor 14 of the transfer conveyor belt 4 operates sensitively and is supplied by the main motor. The printed pattern of the scale-printed laminate film 12 can be completely matched with a predetermined printing frame of the sheet.

The present invention relates to the surface of the sheet band 11 when the end overlap step of the sheet band 11 passes at a position separated by a certain distance before the sheet band enters the laminating mechanism. The step detecting roll 15 that rotates in contact with the head includes a superposition end detection sensor 18 that includes an end photoelectric sensor 17 that senses the passage timing of the superposition end of the sheet band by fine movement caused by the step. .
One embodiment of the overlapping edge detection sensor for detecting the passage timing of the edge overlapping of the sheet band according to the present invention will be described with reference to FIGS.
The overlapping edge detection sensor according to the embodiment of the present invention is obtained by fixing the step movement expanding mechanism shown in FIGS.
The column 34 of the superposition edge sensor of the present invention conveys to the substrates on both sides of the conveyor belt so as to straddle the sheet band at a position separated by a certain distance before the sheet band enters the laminating mechanism. It is firmly fixed in a position separated from the belt.
The fixed shaft 25 shown in FIGS. 3 to 5 is firmly fixed to the fixed plate 30. A ring 32 is attached to the fixing plate 30 and is fixed by screws 33. By fixing the fixed shaft 25 provided at the center of the shape of the T-shaped reverse lever jig 26 with a nut in the horizontal direction, the reverse lever jig 26 is indirectly fixed to the column 34 via the fixing plate 30. ing.
A step detection roll 15 is attached to the leading end of the reverse lever jig 26 in the flow direction of the conveyor.
A bolt 31 for adjusting the position of the step detection roll 15 is attached to the opposite end of the step detection roll 15 by tightening a nut, and the upper surface of the head of the bolt 31 is connected to the lower surface of the fixed shaft 25. It is in contact. By rotating the bolt 31, the distance between the opposite end of the reverse lever jig and the lower surface of the fixed shaft 25 can be increased or decreased. When this distance is increased or decreased, fine adjustment can be made to move the standard position of the level difference detection roll 15 up and down.
Further, a spring shaft 22 is attached at a position intermediate between the opposite end of the step detection roll 15 and the fixed shaft 25 to support the weight of the reverse lever jig 26. The spring shaft 22 prevents the weight of the reverse lever jig from hanging on the step detection roll 15. By adjusting the pulling force of the spring shaft, it is possible to adjust the pressure applied to the step detection roll 15 within the range of 0 to the weight of the reverse lever jig. By adjusting the pressure to 200 g / cm ² ± 50 g / cm ² , the step detection roll can be smoothly rotated so as not to be bounced from the running paper strip surface.
A vertical bar provided with a light transmitting hole 27 as a light receiving portion is attached to the tip in the vertical direction from the position of the fixed axis 25 of the reverse lever jig, and this vertical bar forms a T-shaped shape of the reverse lever jig. is doing. A light shielding plate can also be used as the light receiving part of the present invention.
A light source 28 and a photoelectric sensor 29 that are indirectly supported by the fixing plate 30 as shown in FIG. 5 are provided at positions on opposite sides of the light transmitting hole 27 of the embodiment. When the light transmitting hole 27 moves left and right due to the upward movement, light is transmitted and blocked. The photoelectric sensor 29 detects the change in light and inputs a signal to the controller computer.
In this embodiment, a rotational step detecting roll having a diameter of 50 mm and a thickness of 10 mm is used as the step detecting roller 15 for detecting a step with respect to the thickness of the sheet of 0.2 mm.
3, 4 and 5 overlaps the sheet strip 11 just before the sheet strip 11 enters the pressure roll of the printing film laminate sheet manufacturing apparatus of FIG. As shown in FIG.

In the structure of FIG. 3, when the step detection roll 15 is placed on the step of the sheet, the rotation shaft 23 of the step detection roll 15 is 0.2 mm corresponding to the thickness of the sheet 0.2 mm. To rise. At this time, the reverse lever jig 26 is rotated clockwise with the fixed shaft 25 as the center axis and tilted. At this time, the vertical bar of the reverse lever jig 26 is tilted to the right, and the tip of the vertical bar moves about 3 mm to the right. At this time, light from the light source 28 is transmitted through the light transmission hole 27 provided at the tip of the vertical bar, and this can be received by the photoelectric sensor 29 to generate a signal. It is also possible to change the position of the light source 28 so as to emit a phototube signal when the light is blocked.
The left and right fluctuation distance of the reverse lever jig 26 is proportional to the length of the reverse lever jig 26. Therefore, when the thickness of the sheet is small, the sensitivity of the step detection can be improved by increasing the length of the reverse lever jig 26.
In this embodiment, the step detection roll 15 is adjusted with the bolt 31 that can adjust the tension so that the pressure applied to the sheet is about 200 g / cm ² . By adjusting the bolt 31, it is possible to prevent the step detection roll 15 from smoothly climbing over the step and jumping up due to an impact with the step.

  Since the device of the present invention is a single servo motor, the speed of the paper feeding machine for each top and bottom size of the paper feeding paper, which has been conventionally determined by trial and error, is read as a percentage of this machine speed, and the keyboard is operated by computer processing. The advantage of easy setting is also obtained.

FIG. 1 is an explanatory diagram of the overall structure of an apparatus according to an embodiment of the present invention. FIG. 2 is a control system diagram of the embodiment of the present invention. FIG. 3 is a cross-sectional side view as seen from the side with respect to the flow direction of the conveyor belt of the enlargement mechanism of the step detection roll movement of the overlapping edge detection sensor of the embodiment of the present invention. FIG. 4 is a front view seen from the upper side with respect to the flow direction of the conveyor belt of the enlargement mechanism of the step detection roll movement of the overlapping edge detection sensor of the embodiment of the present invention. FIG. 5 is a perspective view of an enlargement mechanism for the step detection roll movement of the overlapping edge detection sensor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sheet paper stacking part 2 Soccer for sheet feeding 3 Sheet paper feeding mechanism 4 Transfer conveyor belt 5 Alignment roll 6 Main motor motor 7 Crimp roll 8 Pressure receiving roll 9 Drying chamber 10 Conveyor roll 11 Sheet paper strip 12 Long length Print Laminate Film 13 Adhesive Application Roll 14 Servo Motor 15 Step Detection Roll 16 Photoelectric Mark Sensor 17 End Photoelectric Sensor 18 Overlapping End Sensor 19 Keyboard 20 Cutter 21 Long Printing Laminate Film Roll Winding 22 Spring Shaft 23 Rotating Shaft 24 Connection Jig 25 Fixed shaft 26 Reverse lever jig 27 Light transmission hole 28 Light source 29 Photoelectric sensor 30 Fixing plate 31 Bolt 32 Ring 33 Screw 34 Post

Claims (4)

  Long-length printing with printing pattern units and photoelectric mark printing at regular intervals on a sheet strip formed by sequentially superimposing only the edges of 0.1 to 1.0 mm thick sheets. A laminating mechanism for laminating and fixing a laminating film, a sheet feeding mechanism 3 for transporting a sheet band from the sheet stacking unit 1 to the pressure-bonding roll 7 by a transfer belt using a servo motor 14 as a driving force, Laminate film transfer mechanism that feeds out the long-printed laminate film 12 by roll operation and continuously feeds it to the pressure roll 7, a detection mechanism when the end of the sheet band passes, and a photoelectric mark printing signal detected by the laminate film transfer mechanism Servo motor speed control mechanism for changing the speed of the servo motor 14 of the sheet feeding mechanism 3 in accordance with the time difference between the sheet and the passing time signal at the end overlapping portion of the sheet band, and lamination fixing An apparatus for laminating and printing on a sheet having a cutter 20 that cuts an end overlapping portion of the sheet band, and the sheet feeding mechanism 3 includes a sheet stacking unit 1. A sheet band continuously fed onto the transfer conveyor belt 4 in a banded state in which the end of the sheet is superposed so that the leading edge of the next sheet enters under the preceding sheet from the top of the sheet There is a servo motor 14 that drives the row feeding section and the transfer conveyor belt 4 so that the speed of the belt can be controlled, and the detection mechanism at the time of passing the end of the sheet band is constant before the sheet band enters the laminating mechanism. A level difference caused by the passage of the level difference of the sheet is provided with a level difference detection roll 15 that is installed so as to straddle the transfer conveyor belt 4 at a position separated by a distance, and rotates in contact with the surface of the sheet band. The fine upward movement distance of the detection roll 15 is not less than 5 times the movement distance The laminated film transport mechanism includes a pressure roll 7 that includes a superposition edge sensor 18 that senses the passing time of the superposition edge of the sheet band by means of a reverse lever that extends to the moving distance of the upper light receiving portion. And a photoelectric mark sensor 16 that senses the passage time of the photoelectric mark printing of the printed laminate film at a specific distance before the printed laminate film sheet enters, and the servo motor speed control mechanism includes the photoelectric mark sensor. The computer control system to which the photoelectric timing printing passage timing signal from 16 and the passing timing signal of the edge overlapping portion of the sheet band from the overlapping edge detection sensor 18 are inputted, the time difference between the passage timing signals of both is detected. Based on the above, when the laminating mechanism laminates and presses the sheet strip and the long print laminate film, the above deviation time is corrected. And a servo motor speed control mechanism that automatically increases or decreases the speed of the servo motor 14 so that the photoelectric mark printing of the long printed laminate film 12 is laminated and fixed at a predetermined position on the sheet. Printing film laminated sheet manufacturing equipment.   The reverse lever jig is a reverse lever jig 26 provided with a vertical bar having a light receiving portion at the tip at a horizontal portion, and a fixed shaft 25 provided at an intersection of the shape of the reverse lever jig 26. Is attached to the base directly or indirectly so that the shaft can rotate freely, and the rotating shaft 23 of the step detecting roll 15 is attached to the downstream side of the flow of the conveyor belt of the reverse lever jig 26 so that the shaft can rotate freely. The apparatus for producing a printed film laminate sheet according to claim 1.   3. The printing film laminate sheet manufacturing apparatus according to claim 1, wherein the photoelectric mark printing is a part of the printing pattern of the long printing laminate film.   4. The printing film laminate sheet manufacturing apparatus according to claim 1, wherein the long printing laminate film is a polypropylene resin film.

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