JP2007296623A - Laminate film cutting means - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact and inexpensive laminate film cutting means easy in maintenance, without causing failure with a simple constitution, in a laminator for covering a surface of continuously carried printing paper with a laminate film. <P>SOLUTION: A cutting roller 6 having a cutter 5 and both ends vertically movably formed, is arranged between nip rollers 4, 4 and 7, 7 arranged in the front and in the rear of a stroke for passing the printing paper S. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention is a glossy processing machine that coats the surface of a printed material with a laminate film, that is, a laminator, etc., for a laminate film that automatically cuts paper that is continuously coated with a laminate film from an upstream process. It relates to a cutting means.

As a means for cutting a laminate film in a conventional single-wafer laminator, for example, there is a means for cutting a laminate film by a mechanism such as Japanese Patent Publication No. 2004-268191. In this conventional mechanism, a clutch brake and a speed reducer are attached to a rotating shaft of a chain to which a cutting blade for cutting a laminate film is attached, and further, interlocked with the rotating shaft of a paper feeder via a synchro control transformer. This is an evolution of the traditional means that the rotation axis of the paper feeder rotates once when the cutting blade attached to the chain rotates once. In a high-speed cutter method that laminates a laminated film on the surface of paper, puts a small amount of cut or perforation at one end in the axial direction of the film, and applies tension to the paper and the laminated film between two sets of rolls to cut the laminated film. Several sets of rollers 3 that move up and down via the lower roll 2 and the upper cam 10 in the downstream portion in the paper flow direction are arranged in one frame, and the cam and roller frame Shifting the tilting and mounting position of the cam obliquely with respect to the paper flow direction, a cutting method for cutting the laminate film was lowered and pressed sequentially rollers from a side of the perforations.
Japanese Patent Publication No. 2004-268191

  By the way, the means for cutting the laminated film according to the above-mentioned patent document requires a plurality of members such as paper pressing rollers, cam frames, pressing springs, cam support levers, cams, roller levers, cam rollers, cam shafts, etc. And In addition, since a plurality of paper pressing rollers are operated with slightly different timings, a inevitably complicated mechanism is required, and breakdowns and malfunctions are likely to occur. Also, the complicated mechanism makes maintenance very difficult and difficult. The operator who uses the machine wants to adopt a film cutting means of a simpler and trouble-free mechanism.

  In order to achieve the above object, the laminate film cutting means of the present invention includes a step of feeding out the sheets one by one from the upstream sheet feeding unit, a step of overlapping the ends of the front and rear sheets on the conveyance path leading to the laminating unit, In the laminator consisting of the process of laminating continuously with the laminated film while overlapping the edges, the process of separating the paper that is continuously laminated and in a long state individually, the process of collecting the separated and discharged paper, In the cutting process, a first nip roller is disposed on the upstream side of the process and a second nip roller is disposed on the downstream side, and a medium to be cut that is continuously covered with a laminate film is sandwiched between the first and second nip rollers. While laminating the medium to be cut between the first and second nip rollers. Cutter for cutting the end of the film is characterized in that provided upstream of the cutting roller.

In the present invention, there is no particular limitation on the material and shape of the first and second nip rollers.
For example, a silicon roller, a Teflon-treated roller, a roller made of various rubbers or resins, a ceramic, paper, cloth, or the like may be used. The roller diameter is not limited, and the surface may be subjected to anti-slip processing such as a groove, or the surface may be subjected to fluorine or Teflon treatment so that toner used for on-demand printing or the like is not transferred. .

  Similarly, the cutting roller disposed between the first and second nip rollers is not particularly limited in material or shape. For example, the shape of the roller is not limited to a cylindrical shape, and may be a shape including a conical inclination. Alternatively, for example, a roller having a shape formed by a combination of a plurality of curves or straight lines may be used.

  A known cutting means such as a cutter is employed in addition to the means described in Patent Document 1 as the means for cutting the film at the overlapping portion of the printing paper that is arranged upstream of the cutting roller and is conveyed with the overlapping end portions. it can.

According to the laminate film cutting means of the present invention, the cut sheet of the laminate film cut between the nip rollers is forcibly lifted above the pass line of the print sheet. The lifted printing paper is pulled by being sandwiched between the first and second nip rollers, so that a tension is applied and a crack runs automatically from the cut side. Since the cutting roller is lifted so as to apply tension along the crack, the film is cut to the end, and the printing paper is individually separated.
With the above configuration, the number of parts constituting the laminate film cutting means is significantly reduced. Therefore, the occurrence of trouble is suppressed as much as possible by simplifying the mechanism, and maintenance is easy even if it occurs. In particular, since the cutting roller is disposed below the printing paper pass line, only the surface of the paper being conveyed passes between the nip rollers, so that it is possible to minimize the phenomenon of jamming and jamming due to various parts. .
Moreover, the laminator using the cutting means of the present invention can be reduced in size by reducing the number of parts, and it is naturally possible to greatly reduce the cost.

Embodiments of the present invention will be described based on examples with reference to the drawings.
1A and 1B are a conceptual side view and a plan view of a main part of a laminator incorporating a cutting means of the present invention. 2 (A) and 2 (B) are a conceptual side view and a plan view of the main part for explaining the operating state of the laminator in FIG. FIGS. 3A and 3B are an immediate view of the main part of the printing paper fed out and conveyed while overlapping the end portions, and a side view of the main part of the printing paper conveyed by being laminated. FIG. 4 is an enlarged view of a portion X in FIG. 5 (A) and (B), FIGS. 6 (A) and (B), FIGS. 7 (A) and (B), and FIGS. 8 (A) and (B) show the movement of the cutting roller in the cutting means of the present invention. It is the principal part front view and top view explaining time-dependently.

First, the configuration of a laminator incorporating the laminate film cutting means of the present invention will be described.
As shown in FIGS. 1A and 1B, the laminator of the present embodiment is a pair of a paper supply unit including a paper platform 1 and a feed roller 2 provided on the left side, and a right side downstream of the stroke. Laminating section composed of heat rollers 3 and 3, a pair of nip rollers 4, 4 and 7, 7 and a cutter 5 provided therebetween, a paper cutting section composed of a cutting roller 6, and a paper for discharging and collecting the cut paper The paper collecting unit is composed of a platform 8.
Note that the printing paper S passes through the pass line indicated by the alternate long and short dash line in the drawing from the upstream of the left stroke to the downstream of the right stroke. Further, in order to prevent complication of the drawing, the laminate film F is omitted in FIG.

Next, the lamination process will be described with reference to FIG.
A plurality of printing sheets S are placed on the paper platform 1 on the left side in the figure. The uppermost printing paper S is sequentially fed out one by one by the upper feed roller 2. At this time, as shown in FIG. 3A, the front end portion of the printing paper S fed out later is set on the rear end portion of the printing paper S fed out earlier.

A pair of heat rollers 3 and 3 are arranged downstream of the feed roller 2 on the right side. Then, a roll-shaped laminate film F waiting upward is guided to the upper heat roller 3 and is aligned with the surface of the printing paper S by the feed roller 2 between the heat rollers 3 and 3. Here, since the heat-sensitive adhesive (not shown) provided on the side of the laminate film F that comes into contact with the surface of the printing paper S becomes adhesive due to the heat of the heat roller 3, both the laminating film F and the printing paper S are It is firmly bonded. In FIG. 2B, the laminate film F is omitted in order to prevent the drawing from becoming complicated.
By the way, the printing paper S that is sequentially fed out is laminated while the front and rear end portions thereof are overlapped with each other. Therefore, as shown in FIG. It is conveyed to the downstream process.

  The printing paper S that has passed between the first nip rollers 4, 4 downstream is between the two pairs of nip rollers 4, 4, 7, 7 that are arranged at a position shorter than the length of the printing paper S (not necessarily shorter). Will pass. A cutter 5 and a cutting roller 6 for cutting the laminate film F cut by the cutter are disposed between the two pairs of nip rollers. 2 (A) and 2 (B), the cutter 5 surrounded by a broken line overlaps each end portion of the preceding printing paper S1 and the printing paper S2 to be followed, as shown in an enlarged view of FIG. It is set to enter between the mating portions and to cut the end of the laminate film F, and is conveyed onto the right cutting roller 6 in a state where the laminate film F is cut.

  5A is a front view when the cutting roller 6 is viewed from the downstream side of the stroke, and FIG. 5B is a plan view. The printing paper S tends to pass above the cutting roller 6 as shown in FIG. A one-dot chain line in the figure indicates the position of the printing paper S. 6A and 6B, when the cut portion of the laminate film F reaches the upper left portion of the cutting roller 6 (disposed obliquely with respect to the flow of the printing paper S). Thus, the left shoulder portion of the cutting roller 6 is lifted above the pass line of the printing paper S. At that time, the front and rear printing papers S1 and S2 are gripped by the nip rollers 7, 7, 4 and 4, respectively, so that the left shoulder portion of the cutting roller 6 is moved up and down by a combination of a rod end bearing and an air cylinder, for example. It is movably connected and lifted in a state where the cut of the laminate film F is torn. By doing so, for example, the laminate film F made of stretched polypropylene or the like can be easily torn in the width direction of the printing paper S with a notch as a clue.

  Thereafter, as shown in FIGS. 7A and 7B, when the right shoulder portion of the cutting roller 6 is lifted along the flow of the printing paper S, the laminate film F that has connected the front and rear printing papers S1 and S2 is formed. It is completely cut off. Thereafter, as shown in FIGS. 8 (A) and 8 (B), the printing paper S1 before and after the cutting roller 6 does not disturb the conveyance of the printing paper S1 and S2. 7 is discharged and stacked on the most downstream paper platform 8.

The present invention is not limited to the above embodiment.
For example, the cutting roller may be arranged above the paper pass line, and the cut portion of the laminate film may be pushed downward to cut the paper.
Moreover, the cutting roller does not necessarily need to be a cylinder, and may be formed of a prism or a polygonal column.

  (A) And (B) is the principal part conceptual side view and top view of a laminator incorporating the cutting means of this invention.   (A) And (B) is the principal part conceptual side view and top view explaining the operating condition of the laminator of FIG.   (A) And (B) is a principal part immediate view of the printing paper which is fed out and conveyed while overlapping the end parts, and a principal part side view of the printing paper which is laminated and conveyed.   FIG. 3 is an enlarged view of a portion X in FIG. 2.   (A) And (B) is the principal part front view and top view explaining a motion of the cutting roller in the cutting | disconnection means of this invention with time.   (A) And (B) is the principal part front view and top view explaining a motion of the cutting roller in the cutting | disconnection means of this invention with time.   (A) And (B) is the principal part front view and top view explaining a motion of the cutting roller in the cutting | disconnection means of this invention with time.   (A) And (B) is the principal part front view and top view explaining a motion of the cutting roller in the cutting | disconnection means of this invention with time.

Explanation of symbols

S, S1, S2 Printing paper F Laminate film 1, 8 Paper platform 2 Feed roller 3 Heat roller 4, 7 Nip roller 5 Cutter 6 Cutting roller 9 Rod end bearing

Claims (1)

  The process of feeding one sheet at a time from the upstream sheet feeding section, the process of overlapping the edges of the front and back sheets on the conveyance path to the laminating section, the process of laminating continuously with the laminate film while overlapping the ends In a laminator comprising a process of individually separating sheets that have been laminated and in a long state, and a process of collecting the separated and discharged sheets, the cutting process includes a first nip roller on the upstream side of the process and a downstream side. Each of the second nip rollers is arranged and conveyed while sandwiching the medium to be cut, which is continuously covered with the laminate film, between the first and second nip rollers, and between the first and second nip rollers, A cutter for cutting the end of the laminate film coated with the cutting medium is disposed upstream of the cutting roller. Cutting means of the laminate film characterized by vignetting the.

Images