JP2007320304A - Laminator - Google Patents

Abstract

Even if the paper feeding speed is increased or the paper stack is deviated, the paper misalignment is reliably corrected in the course of conveyance, the sheets are stacked with high accuracy, and the continuous paper after lamination is obtained. Provided is a laminator that can be cut securely and cut into pieces.
A pair of nip rollers and various guides in which a sheet supply unit for feeding stacked sheets one by one from the upper surface and a roller made of an independent sphere on the upper side and a backup roller on the lower side of the sphere roller are arranged. A paper conveyance unit comprising: a paper conveyance unit comprising: a paper conveyance unit comprising: a paper conveyance unit comprising: a paper conveyance unit comprising: a paper conveyance unit comprising: And a cutting unit for cutting the laminated film end portion of the overlapped portion of the laminated paper to separate the paper.
[Selection] Figure 1

Description

  The present invention protects and enhances the surface and appearance of an object, provides durability, and improves the aesthetics by gloss. The laminated film is printed on magazines, book covers, posters, pamphlets, etc., cards such as business cards, postcards, etc. Laminator for coating the surface of

JP-A-8-58049 is a conventional laminator. This laminator is an improvement over the disadvantages of the conventional laminator. Its features are that it does not feed two sheets, and even for objects of different lengths, the end is accurately overlapped by a predetermined amount to ensure lamination. When a film is laminated on one side, it is not curled, it is easy to set a laminate film, and the cutting speed of the laminate film is high.
JP-A-8-58049

  However, the above invention uses a vacuum suction disk and directly feeds the end of the paper by overlapping it up and down and back and forth. Therefore, it is unreliable to control the overlap amount of sheets that require accuracy in millimeters. This is because when the sheet feeding speed increases, the reciprocating operation of the vacuum suction disk becomes intense, and the vibrations and the like generated thereby cause further inaccuracy. Further, if the loaded paper is slightly deviated from a predetermined position by, for example, air blowing for paper-sheeting, the paper is sucked up and sent to the downstream process while the vacuum suction plate is displaced. For this reason, a shift in the overlapping portion of the sheets cannot be denied, and a lot of troubles occur in the downstream process due to the shift.

  The object of the present invention is to use the same vacuum suction plate and reliably correct the misalignment in the middle of conveyance even if the sheet feeding speed is increased or the misalignment of the sheet stacking occurs with high accuracy. It is an object of the present invention to provide a laminator that can superimpose sheets and can cut and continuously cut a continuous sheet after lamination.

  In order to solve the above problems, a laminator according to the present invention includes a sheet supply unit that feeds stacked sheets one by one from the upper surface, and an independent spherical roller on the upper side, and a backup roller below the spherical roller. A sheet conveying section composed of a pair of nip rollers and various guides, a stacking section at the end of the sheet provided with a guide for pressing the sheet while forming a step lower than the height of the sheet conveying section, and an end section It is characterized by comprising a laminating portion for covering the laminated paper with a laminating film and a cutting portion for cutting the laminated film of the laminated portion of the laminated paper to separate the paper.

In the present invention, a roller composed of an independent sphere is disposed on the upper side, and a pair of nip rollers having a backup roller disposed on the lower side of the sphere roller and a sheet transport unit composed of various guides. Thus, the posture is reliably controlled without generating wrinkles or the like even when the sheet is drawn downstream.
In addition, since a step is formed lower than the height of the paper transporting portion and an overlap portion of the paper end portion provided with a guide for pressing the paper is provided, the paper forms an overlap if the paper simply passes through the step. By combining with the transport unit, high-speed work can be handled with a sufficient margin for high-speed work.

1A and 1B are a conceptual plan view and a side view of a main part of a laminator of the present invention. FIG. 2 is a perspective view of a main part for explaining the sheet posture control. FIG. 3 is a front view of a main part when viewed from the left arrow side in FIG. 2. FIG. 4 is a side view of the main part in FIG. FIG. 5 is a plan view of the main part in FIG. 6 to 9 are main part plan views for explaining the flow of the sheet posture control over time. 10 to 13 are main part side views for explaining the overlapping portion of the sheet edge portion over time. FIG. 14 is a plan view of the main part of the overlapping portion of the paper edge. FIGS. 15A and 15B are side views of the main part for explaining the overlapping state of the paper edge portions. FIG. 16 is an enlarged view of a main part showing a cutting state in the cutting part. FIGS. 17A and 17B to FIGS. 20A and 20B are a front view and a plan view of the main part for explaining the cutting of the paper over time.
Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1A and 1B, in the laminator of the present invention, a plurality of sheets S are stacked on a sheet mount 1 upstream of the process. Then, as shown in FIGS. 2 (A) and 2 (B), the sheet S corresponding to the uppermost part of the stacked sheets S is fed one by one by the vacuum suction disk 2 (which may be a feed roller or the like). They are sucked up and conveyed to the sheet conveying section X surrounded by the alternate long and short dashed line on the right side.

  For example, as shown in FIG. 3 and FIG. 4 (front view when viewed from the left arrow direction in FIG. 3), the sheet transport unit X is composed of a spherical roller 3 whose upper side is independent, and a backup roller 4 is provided on the lower side thereof. The pair of upper and lower nip rollers R holds the sheet S conveyed by the vacuum suction disk 2. Then, the sheet S held by the spherical roller 2 that is in rotation with the drive of the backup roller 4 is sent out downstream as shown in FIG.

  As shown in FIG. 4, the nip roller R has a lower backup roller 4 whose diameter gradually decreases from left to right. That is, each backup roller 4 rotated by the same shaft has a smaller amount of paper S to be fed to the right side in order from the left side roller having the larger outer periphery. Accordingly, the sheet S sent out by the nip roller R of the present invention is sent out so as to rotate slightly to the right side in the drawing as shown in FIG. 3, 4, and 6, the nip roller R is shown by three spherical rollers 3 and backup rollers 4 for convenience, but the number of the nip rollers R may be larger than that. Incidentally, in FIG. 1 (A), five are illustrated.

Next, the posture control means of the paper S will be described with reference to FIGS.
As shown in FIG. 7, the paper transport section X is composed of, for example, the above-described nip roller R, paper feed guides 7 and 8, and a second nip roller 9 (not necessarily required) composed of a pair of ordinary rollers. . The paper S carried by the vacuum suction disk 2 is first fed to the nip roller R. Thereafter, as described above, the sheet S is sent out while being rotated clockwise little by little as shown in FIG.

  Since the spherical roller 3 constituting the nip roller R is not driven by itself and is free to rotate, each roller can rotate in synchronization with the lower backup roller 4. It is merely holding down and does not have the influence to force the paper S to be sent out. Therefore, as shown in FIG. 9, the right end portion of the sheet S hits the feed guide 7, and is fed downstream while being pressed against the feed guide 7 by a force mixed with forward and rotation. Then, as shown in FIG. 10, the posture is completely corrected in the direction along the feed guide 7, and is held by the second nip roller 9 waiting downstream, and further conveyed to the downstream process.

Next, referring to FIGS. 11 to 15, a means for overlapping a predetermined amount of the end portions of the first paper S1 sent out first and the second paper S2 sent out next will be described.
As shown in FIG. 11, the first sheet S1 sent out from the second nip roller 9 passes through the step portion 11 and is pressed downward by the sheet pressing guide 10 so as to pass between the downstream laminating rollers 12 and 12. pass. The laminate film F fed from the laminate film roll 13 waiting upward is guided to the upper laminate roller 12 and aligned with the surface of the sheet S1 and superposed. A heat-sensitive adhesive (not shown) provided in advance on the surface of the laminate film F that comes into contact with the surface of the sheet S1 exhibits the adhesiveness due to the heat of the laminating rollers 12 and 12, and the adhesion between the sheet S1 and the laminate film F is achieved. Both are firmly bonded and integrated.

  The sheet S1 laminated as described above is conveyed downstream, but as shown in FIGS. 12 and 13, the rear end portion of the sheet S1 on the right side in the drawing passes through the step portion 11 to the lower conveyance table. At the same time as it gets down, the second sheet S2 increases in speed from the left upstream side and enters the step portion 11. 14 and FIG. 15 (shown by diagonal lines in the figure) when arranged so as to overlap the trailing edge portion of the preceding right sheet S1 along the table on the laminating rollers 12 and 12 side which is lowered by one level. ), The two sheets S1 and S2 are adjusted to the same speed and pass between the laminating rollers 12 and 12 with the predetermined amount of overlap.

  Incidentally, as shown in FIG. 16 (A), the sheets S1 and S2 conveyed while overlapping their respective end portions pass between the laminating rollers 12 and 12, and are continuously laminated by the laminating film F. Finish in the state of (B). Then, in the next downstream process, the sheets S1 and S2 made continuous by the laminate film F are cut only at the laminate film F at the overlapping portions of the ends, and cut into individual sheets S1 and S2, respectively.

Next, the individual cutting means for the sheets S1 and S2 which are continuous by the laminate film F in the laminator of the present invention will be described.
As shown in FIG. 15, in the laminator of the present invention, a cutter 14 is disposed downstream of the laminating roller 12. As shown in the enlarged view of FIG. 17, the cutter 14 is divided between the overlapping portions of the sheets S <b> 1 and S <b> 2 from the side end portion where the laminate film F is not covered, and a slight amount at the end portion of the laminate film F. Make a break.

  The cut sheets S1 and S2 pass above the cutting roller 15 disposed downstream as shown in FIG. In the figure, the alternate long and short dash line is the pass line of the sheet S group that is sequentially conveyed. For example, the cutting roller 15 is supported at both ends of a shaft by a support shaft 16 formed of a combination of a rod end bearing and an air cylinder so as to be movable up and down. When the cut passes through the cutting roller 15 configured as described above, the cut side formed on the sheets S1 and S2 of the cutting roller 15 is formed as shown in FIGS. 19A and 19B. The other side is lifted and tension is applied by pushing up. Then, the laminate film F starts to crack from the cut when it is tensioned by the means described above.

Further, as shown in FIGS. 20A and 20B, the support shaft 16 on the other side of the obliquely disposed cutting roller 15 is lifted in synchronism with the conveying speed of the sheets S1 and S2, and the sheets S1 and S2 are lifted. It breaks by running a crack over the entire laminated film F being coated. Then, after the sheets S1 and S2 are cut into pieces by breaking the laminate film F, as shown in FIGS. 21A and 21B, the cutting roller 15 descends below the pass line of the sheet S group, and the next In preparation for cutting of the paper S being conveyed.
The sheets S individually cut in this way are stacked on the right sheet stacking table 18 by the discharge rollers 17 and 17 as shown in FIGS.

  (A) And (B) is the principal part conceptual plan view and side view of the laminator of this invention.   It is a principal part perspective view explaining the attitude control of the paper.   It is a principal part front view at the time of seeing from the left arrow side in FIG.   It is a principal part side view in FIG.   It is a principal part top view in FIG.   FIG. 6 is a plan view of a main part for explaining the flow of sheet attitude control over time.   FIG. 6 is a plan view of a main part for explaining the flow of sheet attitude control over time.   FIG. 6 is a plan view of a main part for explaining the flow of sheet attitude control over time.   FIG. 6 is a plan view of a main part for explaining the flow of sheet attitude control over time.   It is a principal part side view explaining the overlapping part of a paper edge part over time.   It is a principal part side view explaining the overlapping part of a paper edge part over time.   It is a principal part side view explaining the overlapping part of a paper edge part over time.   It is a principal part side view explaining the overlapping part of a paper edge part over time.   FIG. 6 is a plan view of a main part of an overlapping portion at a paper edge.   (A) And (B) is a principal part side view explaining the overlapping state of a paper edge part.   It is a principal part enlarged view which shows the cutting state in a cutting part.   (A) And (B) is the principal part front view and top view which demonstrate cutting | disconnection of a paper over time.   (A) And (B) is the principal part front view and top view which demonstrate cutting | disconnection of a paper over time.   (A) And (B) is the principal part front view and top view which demonstrate cutting | disconnection of a paper over time.   (A) And (B) is the principal part front view and top view which demonstrate cutting | disconnection of a paper over time.

Explanation of symbols

S, S1, S2 Paper F Laminate film X Paper orientation controller R Nip roller 1 Paper platform 2 Vacuum suction disk 3 Spherical roller 4 Backup roller 5 Fixed guide plate 6 Shaft 7, 8 Guide plate 9 Second nip roller 10 Paper presser Plate 11 Stepped portion 12 Laminating roller 13 Laminating film roller 14 Cutter 15 Cutting roller 16 Spindle 17 Discharging roller 18 Paper stacking table

Claims (1)

  A sheet supply unit that feeds stacked sheets one by one from the upper surface, a pair of nip rollers in which a roller made of an independent sphere is arranged on the upper side and a backup roller is arranged on the lower side of the sphere roller, and various guides A stacking unit that forms a step lower than the height of the sheet transporting unit and is provided with a guide for pressing down the sheet, and a laminating unit that covers the sheet with the end overlapped with a laminate film, A laminator comprising a cutting unit that cuts a laminated film of an overlapped portion of laminated paper and separates the paper.

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