JP4947638B2 - Laminating equipment - Google Patents

Description

  In the present invention, a transparent or translucent laminate film coated with an adhesive material on one side is attached to the surface of a printed matter such as a poster or an advertisement or an output medium of a computer (hereinafter referred to as a medium). The present invention relates to a laminating apparatus used for laminating a laminate that improves the water resistance and weather resistance of media by protecting.

  Laminate film rolls are made of a long laminate with an adhesive applied to one side of a transparent or translucent film such as polyester or vinyl chloride, and a release paper attached to the surface of this adhesive side. Paper tube).

  As shown in FIG. 11, a conventional laminating apparatus for covering such a laminating film in close contact with the surface of the media includes side plates 10 fixed in parallel on the left and right sides of the underframe. Peeled from the laminate film A, the shaft 1a of the transport roller 1, the shaft 5a that supports the core of the laminate film A, the shaft 3a that supports the core of the original 3 of the transport film C, and the shaft 3a. A shaft 6a that supports a winding core that winds the release paper B and the shaft of the idle roller 70 are suspended. Further, between the side plates 10, a table 4 a for feeding the media M and an axis of the idle roller 7 are installed.

  The conveyance roller 1 supported between the left and right side plates 10 is driven by a motor 11, and a pressure roller 2 is provided so as to make a pair with the conveyance roller 1 in the vertical direction. The outer peripheral portions of the transport roller 1 and the pressure roller 2 are generally made by applying rubber lining to the outer periphery of a metal core.

  The shaft of the pressure roller 2 is held by a bearing provided on the movable plate 61. One end of the movable plate 61 is pivotally supported by the side plate 10, and the other end is rotated by a lever 63. The cam 64 and the rod 65 can be moved up and down, and the pressure roller 2 can be separated from the conveying roller 1. The spring 66 applies a pressure greater than its own weight to the pressure applied by the pressure roller 2. The pressure is adjusted by rotating the screw rod 67 by the handle 68, and the pressure member 69 and the movable plate are adjusted. A pressure can be applied to the pressure roller 2 via 61.

  After the operator operates the lever 63 to move the pressure roller 2 away from the conveying roller 1, the operator sets the original film 3 of the conveying film C on the shaft 3a and passes through the idle roller 7 and the table 4a. Then, the transport film C is inserted between the transport roller 1 and the pressure roller 2. Then, the original film 5 of the laminate film A is set on the shaft 5a, the release paper B is peeled off from the laminate film A, the release paper B is wound around the shaft 6a via the idle roller 70, and the adhesive surface is exposed. After the laminate film A is inserted between the conveying roller 1 and the pressure roller 2 together with the conveying film C, the lever 63 is operated to lower the pressure roller 2.

  The operator places the medium M on the transport film C fed to the table 4a, steps on the foot switch, rotates the motor 11, and winds the transport roller 1 and the release paper B. The shaft 6a is rotated. Due to the rotation of the transport roller 1, the medium M is drawn between the transport roller 1 and the pressure roller 2 together with the transport film C. At this time, the medium M is supplied along the surface of the pressure roller 2, and the adhesive surface is The exposed laminate film A is affixed to the surface of the medium M and is discharged onto the rear inclined table 4b. The release paper B that has been peeled off is wound around the core 6 supported by the shaft 6a. (See Patent Document 1)

Commonly used media M are those printed by an inkjet printer for printing (thickness around 0.1 mm. This type of media is called “thin media”, hereinafter referred to as media Mn), polystyrene, etc. A sheet of printed paper pasted on a plate-like panel made (thickness of 5 to 10 mm, suspended from the ceiling of a supermarket sales floor. This type of media is called “thick media”. , Hereinafter referred to as media Mk). The thin media Mn and the thick media Mk have different pressurizing forces required for laminating, so a laminating apparatus that can provide appropriate pressurizing forces to both media is required. Also, there is a need for a device with higher pressure for “thin media” Mn. For this reason, a proposal for a pressing method has been made such as supporting the pressing roller with a backup roller in order to apply a large pressing force (see, for example, Patent Document 2).
JP 2002-254515 A JP 2000-334836 A

  The medium Mn is usually printed by an ink jet printer. However, in recent years, depending on the ink used for this printing, if the laminating process is not performed with a stronger pressurizing force, the ink printed through the laminating film A can be used. Some have poor color and gloss reproducibility. On the other hand, since the medium Mk is generally used indoors and does not require strong water resistance and weather resistance, the ink used may be conventionally used, and does not require a strong pressure in laminating. That is, it is necessary to apply a pressing force to the thin media Mn by the spring 66 in addition to the weight of the pressure roller 2. On the other hand, the thick media Mk does not require a strong pressing force, and if a strong pressing force is applied, a plate-like panel made of polystyrene or the like may be crushed and deformed.

  In the case of such a laminating apparatus, the pressure P for pressing the transport film C, the medium M, and the laminate film A fed between the pressure roller 2 and the transport roller 1 is mainly the pressure roller. 2 is determined by its own weight W. Needless to say, the pressure F by the spring 66 adjusted by tightening the left and right screw rods 67 (the sum of the left and right pressures is F) is added to the weight W of the pressure roller 2. (See FIGS. 11 and 12)

  However, since the pressure roller 2 and the conveying roller 1 are made of a so-called straight outer peripheral shape in which the outer diameter does not change at the center and both ends of the roller, respectively, if the pressure F by the spring 66 is increased, 12, the pressure roller 2 is bent, and a gap is generated at the center between the rollers. For this reason, even if a sufficient pressing force is applied to both ends of the media, the necessary pressing force is not applied to the central portion, and a satisfactory laminating process cannot be obtained.

  Further, if the weight of the pressure roller 2 is increased in order to increase the pressure, the pressure F applied by the spring 66 causes a slight deflection of the rubber wound around the outer periphery of the pressure roller 2 and the conveying roller 1. However, since the weight of the roller increases and the weight of the member supporting the roller increases, the weight of the entire device increases, making it difficult to carry it into the office where it is used, In addition, the price of the device itself increases.

  For this reason, the pressure roller 2 is light in its own weight, and even when a strong pressurizing force is applied by the pressurizing force of the spring 66 or the like when laminating the thin medium Mn, the rollers of the transport roller 1 and the pressure roller 2 There is a need for a laminating apparatus having a pressurizing apparatus having a structure that does not cause a gap in the center between them.

  When the thick medium Mk is fed into the laminating apparatus shown in FIG. 11, the thick medium Mk pushes up the pressure roller 2 and the movable plate 61 rotates around the shaft 62 as shown in FIG. The result is that the spring 22 is compressed via the pressure roller 69 and a large pressing force is applied to the pressure roller 2, and the pressing force stronger in the case of the thick medium Mk than the thin medium Mn by the amount of compression of the spring 66. Is added.

  That is, in the case of processing the thin medium Mn, lamination is performed with a high pressure P obtained by adding the pressure F of the spring 66 to the weight W of the roller, and in the case of processing the thick medium Mk, the pressure roller 2 The processing is performed only by the pressing force due to its own weight, and the apparatus applies a pressing force opposite to the strength of the pressing force required for the thickness of the media. There is a need for a laminating apparatus that can provide the necessary applied pressure.

  In the laminating apparatus shown in FIG. 11, the pressure is basically determined by the thickness of the medium. Therefore, the pressure can be changed according to the type of ink used even in the medium having the same thickness. It was difficult. That is, when changing the pressing force, the left and right handles 68 are individually operated to rotate the screw rod 67 to adjust the pressing force, and it is difficult to equalize the left and right pressures. Met.

  Further, there is no means for reading the applied pressure P quantitatively, and furthermore, it is impossible to know the applied pressure W due to its own weight and the applied pressure F due to compression of the spring.

  Further, in the laminating apparatus shown in FIG. 11, after the laminate film A passes through the idle roller 70 and is in contact with the conveying roller 6, the release paper B is peeled off, and the release paper B peeled off from the film is supported. It is wound around the core 6 that is pivotally supported by the shaft 6a. At this time, the position where the release paper B is separated from the laminate film A is not limited to the T1 position shown in FIG. 14 (tangent position of the release paper B), but changes from the T1 position on the travel line of the laminate film A. (S position). Alternatively, the separation position of the release paper B and the laminate film A is not limited to the T2 position shown in FIG. 15 (tangential position of the laminate film A), but changes from the T2 position on the travel line of the release paper B (T3 position). . This change occurs due to the magnitude of the tension resistance (tension) applied to the laminate film A via the shaft 5a and the magnitude of the resistance value when the laminate film A and the release paper B are separated.

  The change in the peeling position between the separation points T1 and S of the release paper B or between the points T2 and T3 becomes a vibration that reciprocates between the respective points during laminating, and the release paper B during laminating. The laminate film A separated from the substrate is caused to vibrate in a direction perpendicular to the film surface between the separation position (S point or T2, T3) and the pressure roller 2. When this vibration occurs, wrinkles are generated in the laminate film A, and the wrinkles do not disappear even if they come into contact with the pressure roller 2. For this reason, the wrinkled film is coated on the medium M. This wrinkle tends to occur when the applied pressure is high. For this reason, there is a need for a laminating film A guide means / apparatus that does not cause wrinkles in the laminating film A even when the applied pressure is increased.

The laminating apparatus of the present invention is a laminate in which a laminate is formed by attaching a laminate film to the surface of a printed material supplied from an original fabric roller or an output medium of a computer by a pressure between a conveying roller and a pressure roller. In the machine, the conveying roller has a tapered outer shape with a gradually decreasing outer diameter from the center toward both ends, and the pressure roller can make contact with the upper part of the conveying roller in pairs It has a straight outer peripheral shape with no change in outer diameter at the center and both ends,
A rotating shaft that is inserted into the left and right side plates of the laminating apparatus body;
A screw rod that moves in a vertical direction on a spring receiver in which a spring is provided in conjunction with direction change gears installed at both ends of the rotating shaft,
A U-shaped upper spring receiver having a horizontal part bent at the upper and lower part, and a bent horizontal part at the lower part of the upper spring receiver, and suspended from the upper spring receiver. A spring receiver having a lower spring receiver to be installed;
The pressure is applied to both ends of the roller shaft of the pressure roller by pressure application means having a pressure roller bearing that applies pressure to the pressure roller in conjunction with the spring receiver .

  The lower spring support stops when the pressure roller comes into contact with the media or laminate film fed onto the transport roller. After the lower spring support stops, the lower spring support is lowered by the lower spring support. The spring provided is compressed, and pressure is applied to the pressure roller via the pressure roller bearing.

  Further, a display plate that rotates in conjunction with the rotation of the rotary shaft is mounted on the side plate, and a scale plate that rotates approximately once is attached to the display plate between all strokes that move the pressure roller up and down. It is characterized in that the dimension between the rollers and the pressure applied to the rollers are continuously described on the scale of the plate.

  In addition, a stroke sensor is provided that recognizes the amount of vertical movement of the upper spring receiver and the pressure state of the pressure roller in conjunction with the vertical movement of the upper spring receiver.

  The laminating apparatus according to the present invention comprises a conveying roller having a tapered outer peripheral shape whose outer diameter is gradually reduced from the central part toward both ends, and a pair of the conveying roller and the upper part. Since the pressure roller has a straight outer peripheral shape with no change in the outer peripheral shape, when a strong pressure is applied to the pressure roller by the pressure applying means, and the pressure roller is bent. Even in such a case, since the conveying roller has a tapered outer peripheral shape, the generation of a gap in the central portion of the roller between the conveying roller and the pressure roller is prevented, and the laminated body pressed and joined by both rollers is used. The applied pressure distribution can be made uniform.

  In addition, by rotating the rotating shaft, the springs installed in the spring receivers provided on the left and right sides of the main body of the device are compressed at the same time. Even when the laminating pressure is increased by force, the contact line between the conveying roller and the pressure roller can be in a state of almost uniform pressure distribution across the entire area of the rollers without any gap. By appropriately selecting the shape of the outer taper of the conveying roller and the pressure on the left and right springs as the pressure determined by the roller's own weight, it becomes possible to obtain a pressure higher than that of the conventional laminating device, A label that can give the required pressure even to media output with ink that requires laminating with a stronger pressure. It is possible to provide the sulfonates device.

  In addition, the entire device can be made lighter than conventional devices that pressurize the pressure required for laminating mainly by the weight of the roller, making it easier to carry into the office. Also, the price of the apparatus can be reduced.

  Further, according to the present invention, when the rotating shaft is rotated and the upper spring receiver is lowered, the pressure roller is lowered via the pressure roller bearing together with the lower spring receiver suspended from the upper spring receiver. At the point of contact with the media or laminate film fed on the transport roller, the pressure roller and lower spring receiver stop descending, and the upper spring receiver continues to descend, and the lower spring receiver and upper spring receiver By stopping the descent when there is a slight gap between the lower horizontal part and the media, the media will be in a state where it receives pressure from the pressure roller itself. Pressure is applied only by the self-weight of the pressure roller, and there is no need to press and deform the media more than necessary, and a good laminating process is possible for thick media.

  On the other hand, when laminating thin media, if the upper spring receiver is lowered by further rotating the rotating shaft, the distance between the upper horizontal portion of the upper spring receiver and the lower spring receiver decreases, and the spring between the two spring receivers decreases. Is compressed, a compression force is applied to the pressure roller by a spring, the pressure applied between the conveyance roller and the pressure roller increases, and the pressure roller is deformed, but the conveyance roller has a tapered outer peripheral shape. Therefore, there is no gap between the conveying roller and the pressure roller, and it is possible to obtain a substantially uniform pressure distribution without gaps over the entire area of both rollers, and to perform lamination with high pressure.

  As described above, the laminating apparatus according to the present invention presses the thick media only by its own weight, so that the media is not pressed and deformed more than necessary. For example, a pressing force applied by a spring can be applied to the pressing force due to the weight of the pressure roller, and lamination can be performed with a high pressing force.

  Furthermore, the laminating apparatus of the present invention rotates the rotating shaft and simultaneously rotates the screw rods via the bevel gears provided at the left and right ends of the rotating shaft, thereby the left and right upper spring receivers, Even when the pressure roller is suspended vertically via the pressure roller bearing, or when the left and right springs are compressed and the pressure roller is pressurized with the applied pressure, Since the movement amount and the applied pressure are always kept in the same state on the left and right, the left and right applied forces can always be made equal, and there is no need for the operator to adjust the left and right applied forces.

  Further, the laminating apparatus of the present invention has a scale plate that rotates about one turn corresponding to the amount of movement from the uppermost point to the lowermost point of the upper spring receiver, and the scale plate allows the pressure roller and the transport roller to be rotated. If there is a gap between the rollers, the space between the rollers is determined by the pressure applied by the compression when the pressure roller and transport roller contact the media via the media and the upper spring receiver is further lowered to compress the spring. The pressure applied by adding the weight of the pressure roller can be displayed.

  In addition, the laminating apparatus of the present invention has a circular cross section in which the central portion is symmetrical on the left and upper sides of the pressure roller before the laminating film comes into contact with the conveying roller, and the lower portion is slightly curved in a bow shape. Since the front idler roller is provided on the upper downstream side after contact with the guide member having a round bar-like shape, the laminate film that contacts the pressure roller via the guide member during laminating is the guide member. The laminate film is generated by the frictional resistance with the guide member because it contacts the pressure roller in the state of being subjected to the longitudinal tension caused by the frictional resistance of the sheet and the lateral tension resulting from the curved shape in the width direction. Since it is pressed against the pressure roller by tension, it prevents vibrations in the direction perpendicular to the laminate film from occurring, resulting in the laminate film. It is possible to prevent the occurrence of word.

  Embodiments of the present invention will be described below. About the same structure as a prior art example, the same code | symbol is used and description is abbreviate | omitted.

  As shown in FIG. 1, the laminating apparatus of the present invention includes a side plate 10 fixed in parallel to the left and right sides of a frame, and the side plate 10 has a shaft 1 a of a transport roller 1 and an original film of a transport film C. A shaft 3a for supporting the core 3 of the film, a shaft 5a for supporting the core of the laminate film A, and a shaft 6a for supporting the core for winding the release paper B peeled off from the laminate film A are pivoted. ing.

  Further, between the side plates 10, a guide member 8, a table 4 a for feeding the medium M, a shaft of the holding idle roller 9, a shaft of the guide idle roller 7, and a rotating shaft 13 of the operation handle 12 described later are attached. It is installed.

  The conveyance roller 1 supported between the left and right side plates 10 is driven by a motor 11, and a pressure roller 2 is provided so as to make a pair with the conveyance roller 1 in the vertical direction. As shown in FIGS. 2 to 4 at the time of pressure operation by both rollers, in the present invention, the conveying roller 1 has a tapered outer periphery whose outer diameter is gradually reduced from the center toward both ends. The pressure roller 2 has a straight outer peripheral shape with no change in outer diameter at the center and both ends. The pressure roller 2 is applied with a pressing force by a pressing force applying means described below.

  Next, the pressure applying means of the present invention will be described with reference to FIGS.

  In the figure, 12 is a handle, 13 is a continuous shaft provided on the handle 12, and is a rotation shaft fitted and inserted into the left and right side plates 10. ing. Reference numeral 15 denotes a vertical axis bevel gear which is fixedly provided at the front ends of screw rods 17 and 17 fitted to bearings 16 installed outside the side plate 10 and meshes with the horizontal axis bevel gear 14. The screw rods 17, 17 are screwed into female screws 18, 18 provided on the upper bent horizontal portion 19 a of the upper spring receiver 19 formed in a U-shape, and the screw rods 17, 17 are rotated to thereby rotate the female screws 18, 18. The upper spring receiver 19 can be moved up and down via the. Reference numeral 19 denotes a U-shaped upper spring receiver, and reference numeral 20 denotes a horizontal portion 20 a that contacts the lower bent horizontal portion 19 b of the upper spring receiver 19, and an L-shaped lower spring receiver that hangs downward from the upper spring receiver 19. , 21 are pressure roller bearings installed under the lower spring receiver 20. The pressure roller bearing 21 is provided so as to be movable up and down between guide grooves 10 a provided in the side plate 10. Reference numeral 22 denotes a spring stretched at an interval provided between the upper horizontal portion 19 a of the upper spring receiver 19 and the horizontal portion 20 a of the lower spring receiver 20.

  The shaft 2a of the pressure roller 2 is supported by a pressure roller bearing 21 installed at the lower portion of the lower spring bearing 20 bent into an L shape. The pressure roller bearing 21 is shown in FIGS. As described above, the left and right guide plates 10a are provided so as to be slidable in the vertical direction between the left and right guide grooves 10a provided at positions that are paired up and down with the conveying rollers 1 of the left and right side plates 10.

  As described above, the horizontal shaft bevel gear 14 is attached to the rotary shaft 13 at a position in contact with the bearing portion outside the left and right side plates 10, and the handle 12 is attached to one end of the rotary shaft 13. The horizontal axis bevel gear 14 meshes with the left and right vertical axis bevel gears 15, and the vertical axis bevel gear 15 is fixed to the shaft ends of screw rods 17 and 17 fitted in bearings 16 fixed to the left and right side plates 10. ing.

  The screw rods 17 and 17 are respectively engaged with female screws 18 and 18 provided on the upper horizontal portion of the upper spring receiver 19, and the female screws 18 and 18 are horizontal portions 19a on the upper portion of the upper spring receiver 19 formed in a U-shape. Is attached. The screw pitches of the left and right screw rods 17, 17 and the female screws 18, 18 are the same, but the left and right screws are made of right and left screws, respectively. Accordingly, the left and right upper spring receivers 19 move up and down at the same pitch by the rotation of the screw rods 17 and 17.

  The upper spring receiver 19 is a bent horizontal portion 19b at the lower portion thereof and abuts against a horizontal portion 20a of the lower spring receiver 20 formed by being bent in an L shape. Is done. Further, as shown in FIG. 5, a spring 22 having a free length D is fitted in a space D between the upper horizontal portion 19a of the upper spring receiver 19 and the inner portion of the horizontal portion 20a of the lower spring receiver 20. Yes.

  When the operator rotates the handle 12 and lowers the upper spring receiver 19 through the bevel gears 14 and 15 and the screw rods 17 and 17, the lower spring receiver 20 and the lower spring receiver 20 suspended from the upper spring receiver 19 are fixed to the lower spring receiver 20. The provided pressure roller bearing 21 descends along the guide groove 10a and presses the medium Mk between the conveying roller 1 and the pressure roller 2 as shown in FIG. At this time, the pressure roller 2 and the lower spring receiver 20 stop descending, but the upper spring receiver 19 has a gap E between the horizontal portion 20a of the lower spring receiver 20 and the horizontal portion 19a of the upper spring receiver 19. Continue to descend. When the rotation of the handle 12 is stopped at the time when the gap E is generated, the medium Mk is in a state where it receives a pressure force only by its own weight of the pressure roller 2.

  Since the thick medium Mk is generally made of a light and soft material such as expanded polystyrene, the medium Mk is compressed by its own weight W of the pressure roller 2 as shown in FIG. Absorbs the difference in diameter due to the shape and deforms along the outer shape of the conveying roller, and the medium Mk and the laminate film A are in intimate contact between the pressure roller 2 and the conveying roller 1. Is done.

  On the other hand, when laminating thin media Mn, when the operator further rotates the handle 12 and lowers the upper spring receiver 19, the distance D between the inner portions of the upper spring receiver 19 and the lower spring receiver 20 shown in FIG. , The spring 22 is compressed by the decrease in the interval, the applied pressure to the pressure roller 2 is increased, and the pressure roller 2 is deformed as shown in FIG. Is a taper shape that is gradually narrowed from the center to both ends so as to correct the deformation, and in order to fill the gap caused by the deformation, the contact line between the conveying roller 1 and the pressure roller 2 is spread over the entire area without any gap. With a nearly uniform pressure distribution, the thin media Mn and the laminate film A are in intimate contact between the pressure roller 2 and the conveying roller 1, and a good laminating process is achieved. Divide.

  As described above, the laminating apparatus according to this embodiment presses the thick media Mk only by its own weight, so that it is not necessary to press and deform the media more than necessary. For thin media Mn, the pressure applied by the spring 22 can be applied to the pressure applied by the pressure of the pressure roller 2, and laminating can be performed with high pressure.

  Furthermore, the laminating apparatus of this embodiment rotates the handle 12 and simultaneously rotates the screw rods 17 and 17 via the left and right bevel gears 14 and 15 to raise and lower the female screws 18 and 18. 18 is moved up and down by left and right upper spring receivers 19 through left and right lower spring receivers 20 and pressure roller bearings 21, and the left and right springs 22 are compressed. The pressurizing force is applied to the pressure roller 2, but the vertical movement amount and pressurizing force of the pressure roller 2 at this time are always kept equal to each other, so the operator adjusts the left and right pressurizing forces. There is no need, and it is always possible to apply pressure in the same state on the left and right. In the above description, the form using the bevel gears 14 and 15 has been described. However, instead of the bevel gear, a gear gear that can change the direction, such as a worm gear or a screw gear, can be used.

  Next, the pressure display means of the present invention will be described. As shown in FIGS. 7 and 8, a small gear 23 is fixed to the other end of the rotary shaft 13, and the small gear 23 surrounds a support shaft 27 fixed to a shaft mounting seat 28 fixed to the side plate 10. Is engaged with a large gear 24 fitted in a bearing cylinder 26 that rotates. A display plate 25 is fitted in the bearing cylinder 26 so as to rotate in synchronization with the large gear 24. Therefore, when the rotating shaft 13 is rotated and the upper spring receiver 19 is lowered via the bevel gears 14 and 15 and the screw rods 17 and 17 and the like, the left and right springs 22 are compressed and interlocked with the rotation of the rotating shaft 13, The large gear 24 meshed with the gear 23 rotates, and the display plate 25 also rotates in the direction of the arrow H or the arrow I in FIG.

  The large gear 24 and the display plate 25 that rotates integrally with the large gear 24 rotate by an angle slightly smaller than one rotation while the upper spring receiver 19 that moves up and down by the rotation of the rotating shaft 13 moves from the highest point to the lowest point. Thus, the gear ratio between the small gear 23 and the large gear 24 is determined. In the case of this embodiment, as shown in FIG. 9, the distance (= stroke) to move from the uppermost point of the upper spring receiver 19 to the lowermost point is set to 40 mm. Of these, the upper 15 mm is a stroke by which the pressure roller 2 descends. That is, the maximum value of the roller interval F shown in FIG. 7 is 15 mm. When the rotating shaft 13 is further rotated and the upper spring receiver 19 is lowered, the spring 22 is compressed between the upper spring receiver 19 and the lower spring receiver 20. The total amount of movement (stroke) for compression of the spring is 25 mm, and a pressure of 300 kg is applied to the pressure roller 2 by compression of the spring. That is, two compression springs having a spring constant of 6 kg / mm are used for the spring 22, and when the pressure roller is raised, the distance between the spring contact portions of the upper spring receiver 19 and the lower spring receiver 20 is free of the spring 22. It is attached in a long state. [6 kg / mm × 25 mm × 2 = 300 kg] During this time (while the upper spring receiver moves 40 mm from the uppermost point to the lowermost point), the display plate 25 (and the large gear 24) rotate by 330 degrees at an angle. .

  FIG. 9A shows the relationship between the descending amount (mm) from the uppermost point of the upper spring receiver, the roller interval (mm), and the applied pressure (kg). In this case, the pressure roller has its own weight of 43 kg. As shown to Fig.9 (a), a scale plate is affixed between 330 degrees on the outer periphery periphery of a display board. The scale indicates the roller gap G (mm) for 15 mm of the 40 mm stroke (between 330 ÷ 40 × 15 = 123.75 degrees in angle) and the stroke of 25 mm (206.45 in angle). Between 25 degrees) indicates the pressure PKg applied to the pressure roller.

  The scale display of the applied pressure will be described. FIG. 9A shows a scale (in mm) indicating a gap (interval) between the pressure roller 2 and the transport roller 1, and the pressure roller 2 and the transport roller 1. The scale (unit of Kgf) indicating the applied pressure between the pressure roller 2 and the conveying roller 1 is shown as shown in FIG. 9B. The scale (in mm) shown and the scale (in Kgf) showing the applied pressure between the pressure roller 2 and the conveying roller 1 are displayed in one band, but the pressure is not normally used. As shown in FIG. 9C, a scale (in mm) indicating a gap (interval) between the pressure roller 2 and the conveyance roller 1, and the pressure roller 2 and the conveyance roller are used. Separate scales (Kgf unit) indicating the pressure applied to the roller 1 But it can also be displayed in the form a strip.

  Further, a reading window 31 is provided at a position facing the outer periphery of the display plate 25 of the side cover 30 attached to the side surface of the side plate 10 on which the display plate 25 is attached, and an operator can display the display plate 25 through this window. The scale of the scale plate 29 affixed to the outer periphery of the can be read.

  The operator sets the original film 5 of the laminate film A on the shaft 5 a, and pulls the drawn laminate film A to the upper side of the pressure roller 2 through the lower side of the guide member 8. At that position, the release paper B is peeled off from the laminate film A, wound around the winding core 6 supported by the shaft 6a via the front idler roller 9, and the laminate film A with the adhesive surface exposed is transported together with the transport film C. After being inserted between the roller 1 and the pressure roller 2, the handle 12 is rotated, and the pressure roller 2 is lowered together with the upper spring receiver 19 and the lower spring receiver 20 that is lowered in conjunction with the upper spring receiver 19. The value of the roller interval G corresponding to the thickness of the medium (in the case of the thick medium Mk), or the value of the pressurizing force corresponding to the ink used when the medium M to be used for output printing by the ink jet printer (the thin medium Mn The scale plate 29 attached to the outer periphery of the display board 25 through the reading window 31 provided on the side cover 30, and each medium It is possible to set a pressure suitable for.

  In this embodiment, when the rotary shaft 13 is rotated and the upper spring receiver 19 is lowered via the bevel gears 14 and 15, the screw rod 17, etc., the pressure roller 2 is lowered, and the upper spring receiver 19 is further lowered. Then, the left and right springs 22 are compressed, and the pressure applied by the compression of the springs 22 is applied to the pressure roller 2. On the other hand, when the rotating shaft 13 rotates, the large gear 24 that meshes with the small gear 23 rotates. The large gear 24 is fitted and fixed to the bearing cylinder 26 together with the display plate 25, and rotates around a support shaft 27 fixed to the side plate 10 on one side by a shaft mounting seat 28. A reading window 31 is provided at a position facing the outer periphery of the display plate 25 of the side cover 30, and the operator can read the scale on the scale plate 29 attached to the outer periphery of the display plate 25 through this window.

  The laminating apparatus according to this embodiment has a scale plate 29 that rotates about one turn corresponding to the amount of movement of the upper spring receiver 19 from the uppermost point to the lowermost point. If the pressure roller 2 and the conveying roller 1 are in contact with each other via the medium Mn, the upper spring receiver 19 is further lowered to move the spring 22 between the rollers and the conveying roller 1. Is compressed, the force obtained by adding the weight of the pressure roller 2 to the pressure applied by the compression, that is, the pressure applied to the pressure roller 2 is displayed.

  When the operator laminates thick media Mk, the roller spacing corresponding to the thickness of the media Mk is adjusted by moving the upper spring receiver 19 by operating the handle 12 to adjust the roller spacing G, and the media Mk to be used. The value of the roller interval according to the thickness can be set by reading the scale plate 29 affixed to the outer periphery of the display plate 25 through the reading window 31 provided in the side cover 30.

  In addition, when laminating thin media Mn, the operator raises and lowers the upper spring receiver 19 by operating the handle 12 with the applied pressure corresponding to the ink used when the media is output and printed by the inkjet printer. Then, the compression of the spring 22 is adjusted, and the value of the pressurizing force according to the thickness of the medium Mn to be used is read through the reading window 31 provided on the side cover 30 on the scale plate 29 attached to the outer periphery of the display plate 25. It can be set by taking.

  Next, display means for displaying digital values instead of display means using a scale plate will be described. As shown in FIG. 10A, the main body of the stroke sensor (linear displacement sensor) 33 is fixed to a bracket 32 attached to the bearing 1b of the conveying roller 1, and the tip of the detection shaft 33a of the stroke sensor 33 is placed on the upper spring bearing. A voltage output that changes in proportion to the amount of movement of the upper spring receiver 19 in the vertical direction is obtained by being fixed to the tip guide member 34 attached to 19, and this voltage value is A / D converted by the microcomputer of the controller of the laminating apparatus The digital value is read and calculated.

   FIG. 10A shows a position where the gap (gap) between the pressure roller 2 and the conveying roller 1 is zero (that is, a position where the crown-shaped bulged central portion of the conveying roller 1 starts to contact the pressure roller 2. ). The expansion state of the stroke sensor 33 at this time is L0, the voltage value at this time is V0, and this is used as a reference value (origin value).

  When the upper spring receiver 19 moves upward from the position shown in FIG. 10A, the extension L at the tip of the detection shaft 33a of the stroke sensor (linear displacement sensor) 33 becomes larger than L0, and the obtained voltage value V is V0. Bigger than. When the voltage value V obtained from the stroke sensor 33 is larger than V0, the microcomputer recognizes that the gap (gap) between the pressure roller 2 and the conveying roller 1 is open.

  On the other hand, when the upper spring receiver 19 moves downward from the position of FIG. 10A, the extension amount L of the tip of the detection shaft 33a of the stroke sensor (linear displacement sensor) 33 becomes smaller than L0, and the obtained voltage value V Becomes smaller than V0.

  When the voltage value V obtained from the stroke sensor 33 is smaller than V0, the microcomputer recognizes that there is no space (gap) between the pressure roller 2 and the conveying roller 1 and the pressure is applied.

  FIG. 10B shows a state in which the pressure is increased to about 230 kgf, and the extension amount of the stroke sensor 33 at this time changes to L1, and the output voltage value changes to V1. That is, by rotating the rotating shaft 13, the upper spring receiver 19 moves downward and the spring 22 contracts by L0-L1 (V0-V1). In this case, since the voltage value V obtained from the stroke sensor 33 is smaller than V0, the microcomputer recognizes that there is no gap (gap) between the pressure roller 2 and the conveying roller 1 and the pressure is applied.

  Further, the relationship between the amount of extension of the stroke sensor 33 and the output voltage, such as V0 at the position of L0 and V1 at the position of L1, is a known value known in the specification of the stroke sensor 33, and Since the spring constant of the spring 22 is also a known value, the current applied pressure Kgf can be calculated by determining how many mm the amount of contraction of the spring 22 corresponding to L0-L1 (V0-V1) is. . The present applied pressure obtained by calculation may be displayed on the display unit of the laminating apparatus, or when the applied pressure reaches a predetermined applied pressure 230 kgf by rotating the rotary shaft 13, a buzzer is sounded. The operator may be notified.

In the present embodiment, a pressure of about 12 kgf (spring constant of 6 kg / mm is 2) is applied to the weight of the pressure roller 2 every time the spring 22 is shrunk by 1 mm. For example, the spring 22 is shrunk by 25 mm from FIG. The current pressure is
(Weight of the pressure roller 2 43 kgf) + (12 kgf × 25 mm) = 343 kgf
It can be obtained by calculation that the applied pressure is obtained.

  FIG. 10C shows a state where the upper spring receiver 19 is moved upward by rotating the rotating shaft 13 and the space (gap) between the pressure roller 2 and the conveying roller 1 is 10 mm away. At this time, it is required from the output voltage V3 of the stroke sensor 33 that the space (gap) between the pressure roller 2 and the conveying roller 1 is L2−L0 (V2−V0).

  In this case, since the voltage value V obtained from the stroke sensor 33 is larger than V0, the microcomputer recognizes that the gap (gap) between the pressure roller 2 and the conveying roller 1 is open, and this Is displayed on the display unit of the laminating apparatus in units of 1 mm between the pressure roller 2 and the conveying roller 1.

  Alternatively, a motor may be attached to the shaft end of the rotating shaft 13 and the rotating shaft 13 may be rotated by the motor.

  In addition, if the "Pressure roller lowering switch" and "Pressure roller lowering switch" are provided in the operation part of this laminating device and the "Pressure roller lowering switch" is pressed for a long time (continuous pressing for about 1 second) The microcomputer of the control unit of the apparatus rotates the motor in the direction in which the upper spring receiver 19 moves downward, reads the voltage value of the current stroke sensor 33, and if the voltage value is smaller than V0, the pressure is applied. The pressure roller 2 is lowered while displaying the applied pressure (unit: Kgf) on the display unit, and is stopped when the calculated applied pressure reaches 230 kgf.

  If you want to finely adjust the pressure after the pressure reaches 230Kgf and stops, press the "Pressure roller lowering switch" for a short time (about 0.2 seconds). Each time it is pressed once, it stops at a position where the applied pressure has increased by about 5 kgf.

  Alternatively, if you press the "Pressure roller lift switch" for a short time (about 0.2 seconds), the motor will move each time it is pressed once, and it will stop at a position where the applied pressure decreases by about 5 kgf each time it is pressed. Can be made.

  Further, from the state of FIG. 10B, if the “pressure roller raising switch” is pressed long (continuously pressed for about 1 second), the microcomputer of the control unit of the laminating apparatus moves the motor upward by the upper spring receiver 19. Rotate in the direction and read the current voltage value of the stroke sensor 33. If the voltage value is larger than V0, the gap between the pressure roller 2 and the conveying roller 1 is obtained by calculation, and the interval is displayed on the display unit. While displaying (unit mm), it is stopped at the position where the gap between the pressure roller 2 and the conveying roller 1 becomes zero. If you want to make fine adjustments from this position, press the “Pressure Roller Lift Switch” for a short time (about 0.2 seconds). 2 is stopped at a position where the distance between the conveying roller 1 and the conveying roller 1 is increased by 1 mm, the setting of the distance between the pressure roller 2 and the conveying roller 1 can be changed to 2 mm, 3 mm, 4 mm, and 5 mm.

  Alternatively, after stopping at a position where the gap between the pressure roller 2 and the conveying roller 1 becomes zero, the pressure roller 2 can be pressed again by pressing and holding the “pressure roller lift switch” again (for about one second continuously). And the transport roller 1 moves to a position where the distance is 10 mm and stops. If you want to make fine adjustments from this position, press the “Pressure Roller Down Switch” for a short time (about 0.2 seconds), and the motor will move each time you press it once. 2 is stopped at a position where the distance between the conveying roller 1 and the conveying roller 1 is reduced by 1 mm, so that the interval between the pressure roller 2 and the conveying roller 1 can be changed to 9 mm, 8 mm, 7 mm, and 6 mm.

  As described above, when the gap between the pressure roller 2 and the conveying roller 1 is large, the gap is displayed on the display unit in mm, and the pressure is applied without any gap between the pressure roller 2 and the conveying roller 1. In this state, the pressing force is displayed in Kgf unit, and when the operator presses the “pressing roller lowering switch” or the “pressing roller raising switch”, the rotating shaft 13 is rotated by the motor and the arbitrary pressing force is applied. Alternatively, a laminating apparatus that can easily set an arbitrary roller interval is obtained.

  Also, as shown by E in FIGS. 10A and 10C, a free length spring having a clearance of about 1 mm between the tip (upper end) of the spring 22 and the upper end inside of the upper spring receiver 19. 22 is used, when laminating to a medium such as styrene board with a thickness of 10 mm, the gap between the pressure roller 2 and the conveyance roller 1 is set to about 9 mm. Lamination can be performed with a pressure of only 43 kgf of the roller 2 itself.

  Next, the wrinkle generation preventing device for the laminate film A of the present invention will be described.

  As shown in FIG. 1, a guide member 8 is provided on the upper upstream side of the pressure roller 2 before the laminating film A contacts the conveying roller 1, and a front idler roller 9 is provided on the upper downstream side after the contact. Yes. The front idler roller 9 has a shaft pivoted by left and right side plates 10, and both ends of the guide member 8 are fixed to the left and right side plates 10, and the central portion is symmetrical in the left and right direction and slightly bent in a bow shape downward. It has a round bar shape with a circular cross section.

  The laminate film A contacting the pressure roller 2 through the guide member 8 was subjected to the longitudinal tension generated by the frictional resistance with the guide member 8 and the lateral tension generated from the curved shape in the width direction. In this state, the pressure roller 2 is contacted at a point T shown in FIG.

  Further, the laminate film A that has come into contact with the pressure roller 2 separates the release paper B at the contact point S between the front idle roller 9 and the tangent line of the pressure roller 2, and the separated release paper is supported by the shaft 6a. It is wound around the core 6. The separation position of the release paper B changes in the vicinity of the contact S due to variations in the adhesive force between the laminate film and the release paper and changes in the tension applied to the laminate film, but the laminate film A is TS in FIG. In order to peel the release paper in the tangential direction at the point S, the center of the pressure roller 2 of the present invention The guide member 8 having a round bar-like shape with a circular cross section curved slightly in the shape of an arc on the lower side and an idle roller 9 is provided on the upper outlet side, and the gap between the guide member 8 and the idle roller 9 is Thus, the laminating film A is brought into contact with the pressure roller, so that the vibration in the direction perpendicular to the film surface is prevented from occurring, so that the laminating film A is separated. It is possible to prevent the occurrence of word.

  Further, the guide member 8 is not limited to a fixed rod-shaped material, but may be a rotating roller, and the outer shape is not limited to an arcuate shape. Instead of the idle roller 9, a rod-like member having a smooth outer periphery may be used.

  Further, as shown in FIGS. 2, 3 and 4, the outer periphery (tapered) shape of the conveying roller 1 is preferably a quadratic curve (parabola), but the central part is parallel (straight) and both ends are tapered. Even when approximated by the straight line, the same effect as in the case of the quadratic curve can be obtained by appropriately selecting the thickness and hardness of the rubber lining layer applied to the outer periphery of the conveying roller 1 and the pressure roller 2. .

  Although the embodiment has been described with reference to the illustrated example, the present invention is not limited to this and can be implemented in various modes.

It is sectional drawing which shows the positional relationship with the flow of each film of a laminating device of this invention, a roller, a guide member, and a table. It is roller part sectional drawing which shows the state of the pressurization only by the own weight of a pressure roller. FIG. 5 is a cross-sectional view of a roller portion showing a state where a contact line between a pressure roller and a conveyance roller is made to have a substantially uniform pressure distribution without a gap by applying an appropriate pressure to the pressure roller. It is roller part sectional drawing which shows the state which processes a thick medium with the applied pressure only by the self-weight of a pressure roller. It is sectional drawing which shows the state which expanded the space | interval of a pressure roller and a conveyance roller. It is sectional drawing which shows the state which processes a thick medium by the pressurization force only by the self-weight of a pressure roller with the laminating apparatus of this invention. It is sectional drawing which shows the attachment and drive state of a scale plate with the lamination apparatus of this invention. It is a side view which shows the attachment and drive state of a scale board with the lamination apparatus of this invention. (A)-(c) is an expanded view which shows the structural principle of a scale used as a display means of the laminating apparatus of this invention, and the attachment state to the laminating apparatus. It is principal part sectional drawing which shows the attachment state of the sensor which detects the clearance gap between a lower spring receiver and an upper spring receiver, and applied pressure. It is principal part sectional drawing which shows the attachment state of the sensor which detects the clearance gap between a lower spring receiver and an upper spring receiver, and applied pressure. It is principal part sectional drawing which shows the attachment state of the sensor which detects the clearance gap between a lower spring receiver and an upper spring receiver, and applied pressure. It is sectional drawing which shows the conventional laminating apparatus. It is sectional drawing which shows a deformation | transformation of the roller at the time of the pressurization of the conventional laminating apparatus. It is a side view which shows the state which processes a thick medium with the conventional laminating apparatus. It is a principal part side view which shows the position where a release paper is isolate | separated from a laminate film with the conventional laminating apparatus. It is a principal part side view of the other example which shows the position where the release paper B is isolate | separated from the lamination film with the conventional laminating apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Conveyance roller 2 Pressure roller 3 Conveyance film original fabric 4a, 4b Table 3a The axis | shaft which supports the original core of the conveyance film 5 Laminate film A original fabric 5a Supports the lamination film core Shaft 6a Shaft 8 supporting the winding core for winding the release paper Guide member 9 Idle roller 12 Handle 13 Rotating shaft 14 Horizontal bevel gear 15 Vertical bevel gear 16 Bearing 17 Screw rod 18 Female screw 19 Upper spring receiver 20 Lower spring receiver 21 Addition Pressure roller bearing 22 Spring 23 Small gear 24 Large gear 25 Display plate 26 Bearing cylinder 27 Support shaft 28 Shaft mounting seat 29 Scale plate 30 Side cover 31 Reading window 32 Bracket 33 Stroke sensor

Claims (4)

In a laminating apparatus that forms a laminate by attaching a laminate film to the surface of a printed material supplied from an original fabric roller or an output medium of a computer by applying pressure between the conveying roller and the pressure roller, the conveying roller is The outer peripheral shape of the taper has a tapered outer diameter that gradually decreases from the central part toward both ends, and the pressure roller is provided so as to be in contact with the upper part of the conveying roller in a pair. It has a straight outer periphery with no change in outer diameter at both ends.
A rotating shaft that is inserted into the left and right side plates of the laminating apparatus body;
A screw rod that moves in a vertical direction on a spring receiver in which a spring is provided in conjunction with direction change gears installed at both ends of the rotating shaft,
A U-shaped upper spring receiver having a horizontal part bent at the upper and lower part, and a bent horizontal part at the lower part of the upper spring receiver, and suspended from the upper spring receiver. A spring receiver having a lower spring receiver to be installed;
A laminating apparatus, wherein pressure is applied to both ends of a roller shaft of a pressure roller by pressure application means having a pressure roller bearing that applies pressure to the pressure roller in conjunction with a spring receiver . The lower spring support stops when the pressure roller comes into contact with the media or laminate film fed onto the transport roller. After the lower spring support stops, the lower spring support is installed inside the spring support. 2. The laminating apparatus according to claim 1, wherein the spring is compressed and pressure is applied to the pressure roller via the pressure roller bearing. A display plate that rotates in conjunction with the rotation of the rotary shaft is mounted on the side plate of the laminating apparatus main body, and a scale plate that rotates approximately once during the entire stroke of the pressure roller is attached to the display plate. 2. The laminating apparatus according to claim 1, wherein a dimension between the rollers and a pressure applied to the rollers are continuously described on the scale plate. 2. The laminating apparatus according to claim 1, further comprising a stroke sensor that recognizes a vertical movement amount of the upper spring receiver and a pressure state of the pressure roller in conjunction with the vertical movement of the upper spring receiver.

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