Paper clamping and stacking device

Abstract

The present invention relates to a nip sheet stacking device (100) for sequentially stacking nip sheets (1) on the front surfaces of a plurality of glass substrates (G) being conveyed, the nip sheet stacking device (100) being provided with: a feeding mechanism (25) for feeding long nip sheets (1L) from a roll paper (1R) formed by winding the long nip sheets (1L) into a roll shape; a cutting mechanism (26) for cutting the elongated nip paper (1L) discharged by the discharge mechanism (25) to form a nip paper (1) having a size that overlaps the front surface of the glass substrate (G); a guide mechanism (27) that conveys the nip paper (1) cut by the cutting mechanism (26) to the front surface of the glass substrate (G); and a mist spraying mechanism (13) that is disposed on the upstream side of the cutting mechanism (26) in the discharge direction (Y) of the long nip paper (1L) and that sprays mist-like water (W) to at least one surface of the long nip paper (1L).

Description

Technical Field

[0001] The invention relates to a paper sandwiching and laminating device. Background Art

[0002] For example, glass substrates for FPDs (flat panel displays) used in liquid crystal displays (LCDs) and plasma displays are required to prevent the adhesion of minute foreign matter and damage to the front surface. Consequently, paper is often placed on the front surface of the glass substrate during storage and transportation (e.g., Patent Document 1).

[0003] The paper is pulled out from a roll formed by winding a long paper strip into a roll shape, cut by a cutting machine into a size covering the front surface of the glass substrate, and overlapped on the glass substrate (for example, see Patent Documents 2 and 3).

[0004] Prior art literature Patent Literature Patent Document 1: Japanese Patent Application Laid-Open No. 2013-256315 Patent Document 2: Japanese Patent No. 5807417 Patent Document 3: Japanese Patent No. 6953795

[0005] Problems to be solved by the invention

[0006] However, as the diameter of the paper roll decreases, the curl of the long paper strips pulled from the roll becomes stronger. This can cause the paper to get caught on the device or become misaligned during transportation after being cut. This can result in lamination defects where the paper floats off the glass substrate when being superimposed on the front surface of the glass substrate. Summary of the Invention

[0007] Therefore, an object of the present invention is to provide a paper laminating device capable of cutting a long paper drawn out from a roll of paper and laminating the cut paper on a glass substrate in a satisfactory manner.

[0008] Means for solving problems

[0009] The present invention is constituted by the following structure.

[0010] A paper laminating device is provided for laminating paper on the front surfaces of a plurality of glass substrates being conveyed, wherein: The paper-stacked stacking device comprises: a discharging mechanism for discharging a long strip of paper from a paper roll, wherein the paper roll is formed by winding the long strip of paper into a roll shape; a cutting mechanism for cutting the long strip of paper released by the releasing mechanism to form paper of a size that overlaps the front surface of the glass substrate; a guiding mechanism for conveying the paper cut by the cutting mechanism to the front surface of the glass substrate; and The spray mechanism is disposed upstream of the cutting mechanism in a feeding direction of the long paper strip and sprays mist water onto at least one surface of the long paper strip.

[0011] Effects of the Invention

[0012] According to the present invention, it is possible to provide a paper laminating device that can cut long strips of paper pulled out from a roll of paper and laminate the cut strips on a glass substrate in a satisfactory manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the paper stacking device of this embodiment. Figure 2 yes Figure 1 Sectional view II-II in . Figure 3 This is a structural diagram of a paper stacking device according to Modification 1. Figure 4 It is a structural diagram of the paper stacking device of Modification 2. Figure 5 It is a structural diagram of the paper stacking device of Modification 3. Figure 6 It is a structural diagram showing another example of the guide mechanism.

[0014] Label Description 1 Paper Jam 1L long paper clip 1R roll paper 13, 71, 72 spray mechanism 25 Release Agency 26 Cutting mechanism 27 Guidance Agency 31 Pull-out roller (roller) 32 tension adjustment roller (roller) 33 Guide roller (roller) 34 Pay-out roller (roller) 51 Sprayer 52 nozzle 61 Sensors 62 Control Department 100, 100A, 100B, 100C Paper stacking device D distance G Glass Substrate W Water X conveying direction Y release direction DETAILED DESCRIPTION

[0015] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0016] Figure 1 2 is a structural diagram of the paper stacking device 100 according to this embodiment.

[0017] like Figure 1 As shown, the paper laminating device 100 of this embodiment is a device for stacking and laminating paper 1 so as to cover one main surface, that is, the front surface, of a glass substrate G. The paper 1 is stacked on the glass substrate G by cutting the long paper 1L into a size that covers the front surface of the glass substrate G.

[0018] The paper laminating device 100 includes a conveying device 11 for conveying a glass substrate G and a laminating device 12 for laminating the paper 1 so as to cover the front surface, which is one main surface of the glass substrate G conveyed by the conveying device 11 .

[0019] The paper 1 stacked on the front surface of the glass substrate G is a sheet-like material that is sandwiched between the glass substrates G when a plurality of glass substrates G are stacked during transportation or storage. As the paper 1, for example, a material having a smoothness of 5 seconds to 30 seconds (JIS P8119, 1998) and a density of 0.4 g / cm 3 ~1.0g / cm 3 , a paper having a resin content of 0.5% by mass or less (JIS P 8224, 2002), excellent cushioning properties, and little transfer of the resin component.

[0020] The glass substrate G on which the interlayer paper 1 is laminated is made of, for example, an alkali-free glass material used in flat panel displays (FPDs) such as LCDs (Liquid Crystal Displays) and OLEDs (Organic Light-Emitting Diodes).

[0021] The conveyor 11 includes a plurality of horizontally arranged conveyor rollers 21. These conveyor rollers 21 are arranged at intervals from each other, and glass substrates G are sequentially fed onto the upper portions of these conveyor rollers 21. The conveyor 11 conveys the fed glass substrates G horizontally in a single direction, namely, a conveyance direction X, by rotating the conveyor rollers 21 in the same direction.

[0022] The laminating device 12 includes a feeding mechanism 25 , a cutting mechanism 26 , a guiding mechanism 27 , and a spraying mechanism 13 .

[0023] The feed mechanism 25 is a mechanism that pulls the long strip of paper 1L, which has been wound around the core material 2 to form the paper roll 1R, out of the paper roll 1R and feeds it in the feed direction Y. The feed mechanism 25 comprises, in order from the upstream side, a pair of feed rollers 31, a tensioning roller 32, a guide roller 33, and a pair of feed rollers 34. The long strip of paper 1L, which has been wound around the core material 2 to form the paper roll 1R, is pulled out by the feed rollers 31, then hooked onto the tensioning rollers 32 and guide rollers 33, and fed downstream by the feed rollers 34.

[0024] A pair of pull-out rollers 31 are positioned opposite each other and sandwich the long paper strip 1L from the paper roll 1R and pull it out. A tensioning roller 32 applies tension to the long paper strip 1L between the pull-out roller 31 and the delivery roller 34, allowing the long paper strip 1L to be delivered downstream without slack. A guide roller 33 guides the long paper strip 1L, which has been tensioned by the tensioning roller 32, toward the delivery roller 34. A pair of delivery rollers 34 are positioned opposite each other and sandwich the long paper strip 1L and deliver it downstream.

[0025] The cutting mechanism 26 includes a long cutter 35. The cutter 35 is positioned above the long paper strip 1L released by the feeding mechanism 25 and is arranged along the width direction of the long paper strip 1L. The cutting mechanism 26 lowers the cutter 35 when the length of the long paper strip 1L released from the feeding mechanism 25 reaches a set length for overlapping the long paper strip 1L with the glass substrate G. As a result, the long paper strip 1L is cut by the cutter 35, leaving a paper strip 1 of the set length that covers the front surface of the glass substrate G.

[0026] The guide mechanism 27 includes a conveyor 41, a pressing roller 42, and a guide portion 43. One end of the conveyor 41 is disposed on the cutting mechanism 26 side, and the other end of the conveyor 41 is disposed above the conveying device 11. The conveyor 41 is disposed so as to be inclined downward from one end toward the other end.

[0027] The conveyor 41 has a pair of pulleys 45 and an endless belt 46 hung on these pulleys 45. The upper side of the belt 46 moves obliquely downward as the pulleys 45 rotate.

[0028] The pressing roller 42 is arranged near the lower end of the upper surface side of the conveyor 41. A plurality of pressing rollers 42 are arranged at intervals in the width direction of the conveyor 41, and press the paper 1 conveyed by the belt 46 on the conveyor 41 from above.

[0029] The guide portion 43 is provided between the lower end of the conveyor 41 and the vicinity of the upper portion of the glass substrate G being conveyed by the conveyor device 11. The guide portion 43 is formed in a comb-like shape and is arranged so as to be inclined downward from one end toward the other end. The paper 1 fed from the conveyor 41 is passed to the upper surface of the glass substrate G in the guide portion 43.

[0030] The spray mechanism 13 is arranged on the upstream side of the cutting mechanism 26 of the stacking device 12 in the feeding direction Y of the long strip of paper 1L. The spray mechanism 13 is particularly preferably arranged on the upstream side of the cutting mechanism 26 in the feeding direction Y and on the upstream side of the feeding roller 34 at the most downstream side in the feeding direction Y. In this example, the spray mechanism 13 is arranged between the pulling roller 31 and the tension adjustment roller 32 on the winding surface side of the long strip of paper 1L wound around the core material 2. It should be noted that the spray mechanism 13 can be provided integrally with the other mechanisms of the stacking device 12, or can be provided separately from the other mechanisms of the stacking device 12.

[0031] Figure 2 yes Figure 1 Sectional view II-II in .

[0032] like Figure 1 and Figure 2 As shown, the spray mechanism 13 has a plurality of (four in this example) sprayers 51. The sprayer 51 has a nozzle 52, from which water W is sprayed in a mist form. The sprayer 51 is arranged so that the nozzle 52 is directed toward the long paper clip 1L. These sprayers 51 are arranged at intervals in the width direction perpendicular to the release direction Y relative to the long paper clip 1L. In addition, each sprayer 51 of the spray mechanism 13 is arranged so that the distance D between the nozzle 52 and the long paper clip 1L is preferably greater than 100 mm and less than 1000 mm, and more preferably greater than 100 mm and less than 500 mm. As a result, the mist water W sprayed from the nozzle 52 of each sprayer 51 is fully sprayed toward the long paper clip 1L in the width direction without omission.

[0033] The spray mechanism 13 also includes a sensor 61 and a control unit 62. The sensor 61 is a proximity sensor such as a laser sensor, and is disposed near the roll paper 1R. The sensor 61 detects the outer diameter of the roll paper 1R.

[0034] The control unit 62 is connected to the sensor 61 and the sprayer 51. A detection signal from the sensor 61 is sent to the control unit 62. The control unit 62 operates each sprayer 51 based on the detection signal from the sensor 61. Specifically, based on the detection signal from the sensor 61, the control unit 62 operates the sprayer 51 to spray mist water W from the nozzle 52 when the outer diameter of the roll paper 1R becomes below a threshold value. The threshold value can be selected appropriately. For example, it is preferable to set the winding thickness of the long strip of paper clip 1L, that is, the outer diameter of the roll paper 1R at which the thickness in the radial direction from the core material 2 becomes 20 mm as a threshold value, and operate the sprayer 51 to spray mist water W from the nozzle 52 from the time point when the outer diameter of the roll paper 1R becomes below the threshold value.

[0035] Here, if the long strip of paper 1L is pulled out from the paper roll 1R and the winding diameter of the paper roll 1R decreases, the curl imparted to the long strip of paper 1L becomes stronger, and the paper 1 cut by the cutting mechanism 26 becomes curved. As a result, when the paper 1 is fed toward the front surface of the glass substrate G using the guide mechanism 27, conveying defects may occur, such as the end of the curved paper 1 being caught in the gap between the conveyor 41 and the guide portion 43 of the guide mechanism 27, resulting in damage to the paper 1 or positional displacement. In addition, lamination defects may occur, such as the curved paper 1 floating off the glass substrate G when the paper 1 is superimposed on the front surface of the glass substrate G.

[0036] In the paper loading device 100 of this embodiment, the spray mechanism 13 sprays mist-like water W onto the long paper strip 1L. This reduces the winding diameter of the roll paper 1R, and the curling of the strongly curled long paper strip 1L is suppressed by containing the sprayed water W within the long paper strip 1L. This prevents the paper strip 1 from bending due to the curling when the cutting mechanism 26 cuts the long paper strip 1L to form a paper strip 1 of a predetermined size. Consequently, it is possible to prevent improper feeding and loading of the paper strip 1, allowing the paper strip 1 to be smoothly overlapped on the front surface of the glass substrate G without gaps. This allows the roll paper 1R wound around the core material 2 to be used up without waste, thus reducing costs.

[0037] Next, a modified example of the jammed paper loading device 100 will be described.

[0038] (Variant 1)

[0039] Figure 3 1 is a structural diagram of a paper stacking device 100A according to Modification 1.

[0040] like Figure 3As shown, in the paper loading device 100A of Modification 1, the spray mechanisms 13 and 71 are arranged at multiple locations (two locations in this example) in the feed direction Y of the long paper strip 1L. Like the spray mechanism 13, the spray mechanism 71 also includes multiple sprayers 51. These sprayers 51 are arranged at intervals in the width direction perpendicular to the feed direction Y relative to the long paper strip 1L, with the spray outlet 52 of each sprayer 51 facing the long paper strip 1L.

[0041] One spray mechanism 13 is disposed between the pull-out roller 31 and the dancer roller 32, and another spray mechanism 71 is disposed between the dancer roller 32 and the guide roller 33. Both of these spray mechanisms 13 and 71 are disposed on the winding side of the long paper strip 1L that is wound around the core material 2. The operation of each of these spray mechanisms 13 and 71 is controlled by the control unit 62.

[0042] In this paper loading device 100A, mist water W can be sprayed at multiple locations along the paper roll 1R in the direction of the paper roll 1L. For example, the spray mechanisms 13 and 71 at multiple locations can be independently activated according to the roll diameter of the paper roll 1R. In other words, by increasing the number of activated spray mechanisms 13 and 71 as the roll diameter of the paper roll 1R decreases, the curling of the paper 1 can be appropriately suppressed according to the intensity of the curl.

[0043] (Variant 2)

[0044] Figure 4 It is a structural diagram of a paper stacking device 100B according to a second modification.

[0045] like Figure 4 As shown, in the paper loading device 100B of Modification 2, the spray mechanisms 13 and 72 are also arranged at multiple locations (two locations in this example) in the feed direction Y of the long paper strip 1L. Similar to the spray mechanism 13, the spray mechanism 72 also includes multiple sprayers 51. These sprayers 51 are arranged at intervals in the width direction perpendicular to the feed direction Y relative to the long paper strip 1L, and the spray outlet 52 of each sprayer 51 is arranged to face the long paper strip 1L.

[0046] This paper loading device 100B can also spray mist water W onto a long paper 1L drawn from a paper roll 1R at multiple locations along the paper roll's delivery direction Y. For example, the spray mechanisms 13 at multiple locations can be independently activated based on the roll diameter of the paper roll 1R. In other words, by increasing the number of spray mechanisms 13 and 72 activated as the roll diameter of the paper roll 1R decreases, the curling of the paper 1 can be appropriately suppressed based on the strength of the curl.

[0047] Furthermore, in the paper loading device 100B, mist water W can be sprayed onto both the winding surface of the long paper 1L wound around the core material 2 and the surface opposite to the winding surface, thereby effectively suppressing curling.

[0048] (Variant 3)

[0049] Figure 5 100C is a structural diagram of a paper stacking device according to a third modification.

[0050] like Figure 5 As shown, in the paper loading device 100C of Modification 3, a single spray mechanism 71 is disposed between the tension adjustment roller 32 and the guide roller 33, and its operation is controlled by the control unit 62. The spray mechanism 71 also includes a plurality of sprayers 51 disposed at intervals in the width direction perpendicular to the feeding direction Y relative to the long paper 1L, with the spray outlet 52 of each sprayer 51 disposed toward the long paper 1L.

[0051] In the paper loading device 100C of this modification 3, mist water W is sprayed between the dancer roller 32 and the guide roller 33 onto the long paper 1L drawn out from the roll paper 1R, thereby suppressing the paper 1 from being bent due to curling.

[0052] Next, another example of the guide mechanism 27 will be described.

[0053] Figure 6 1 is a structural diagram showing another example of the guide mechanism 27 .

[0054] like Figure 6 As shown, in the guide mechanism 27, a pad 47 is provided between the conveyor 41 and the guide portion 43. The pad 47 is fitted between the teeth of the comb-shaped guide portion 43 and attached to the guide portion 43. A plurality of pads 47 are provided at intervals in the width direction of the guide portion 43.

[0055] Thus, if the pad 47 is provided between the conveyor 41 and the guide portion 43 in the guide mechanism 27, the pad 47 can smoothly convey the paper 1 from the conveyor 41 to the guide portion 43. Therefore, it is possible to suppress conveying defects caused by the end of the paper 1 fed from the conveyor 41 entering the gap between the conveyor 41 and the guide portion 43.

[0056] It should be noted that, in the above embodiment, the spray mechanisms 13, 71, and 72 are exemplified as including a plurality of sprayers 51 for spraying mist water W. However, these spray mechanisms 13, 71, and 72 are not limited to a configuration including a plurality of sprayers 51. For example, the spray mechanisms 13, 71, and 72 may also include a plurality of spray outlets spaced apart in a long tube, and spray mist water W from each of the spray outlets.

[0057] Thus, the present invention is not limited to the above-mentioned embodiments, and combinations of the various structures of the embodiments, changes and applications made by those skilled in the art based on the description in the specification and known technologies are also intended by the present invention and are included in the scope of protection requested.

[0058] As described above, this specification discloses the following matters.

[0059] (1) A paper laminating device for laminating paper sequentially on the front surfaces of a plurality of glass substrates being conveyed, wherein: The paper-stacked stacking device comprises: a discharging mechanism for discharging a long strip of paper from a paper roll, wherein the paper roll is formed by winding the long strip of paper into a roll shape; a cutting mechanism for cutting the long strip of paper released by the releasing mechanism to form paper of a size that overlaps the front surface of the glass substrate; a guiding mechanism for conveying the paper cut by the cutting mechanism to the front surface of the glass substrate; and The spray mechanism is disposed upstream of the cutting mechanism in a feeding direction of the long paper strip and sprays mist water onto at least one surface of the long paper strip.

[0060] According to this paper stacking device, a spray mechanism sprays mist-like water onto the long paper strips, reducing the winding diameter of the roll paper. This reduces the curling of the long paper strips, which have a strong curling property, by containing the sprayed water within the long paper strips. This prevents the long paper strips from bending due to curling after being cut by the cutting mechanism. Consequently, poor paper transport and loading onto the glass substrate can be prevented, allowing the paper strips to be smoothly stacked onto the front surface of the glass substrate without gaps. This allows the roll paper to be used up without waste, thus reducing costs.

[0061] (2) The paper laminating device according to (1), wherein: The feeding mechanism includes a plurality of rollers, and the long paper clip contacts the outer peripheral surfaces of the plurality of rollers. The spray mechanism is arranged upstream of a contact portion with the most downstream roller of the release mechanism.

[0062] According to this paper stacking device, the roller can make the mist water sprayed onto the long paper uniform before the long paper is cut by the cutting mechanism, thereby more effectively suppressing the curling of the long paper.

[0063] (3) The paper laminating device according to (1) or (2), wherein: The spray mechanism includes a plurality of sprayers, and the plurality of sprayers spray mist-like water toward the long strip of paper. The plurality of sprayers are arranged at intervals in a width direction perpendicular to a feeding direction of the long paper.

[0064] According to this paper stacking device, the mist water sprayed from each sprayer can be sprayed sufficiently to the long paper without omission in the width direction.

[0065] (4) The paper laminating device according to any one of (1) to (3), wherein: The spray mechanism is arranged at a plurality of locations in the feeding direction of the long-shaped paper.

[0066] The paper stacking device can spray mist water onto multiple locations of the long paper in its delivery direction. In addition, for example, by increasing the number of spray mechanisms as the roll diameter of the paper decreases, the curling of the paper can be appropriately suppressed according to the intensity of the curling.

[0067] (5) The paper stacking device according to any one of (1) to (4), wherein: The spray mechanism is arranged on the front side and the back side of the long strip of paper.

[0068] According to this paper laminating device, mist water can be sprayed onto both the winding surface and the surface opposite to the winding surface of the long paper, thereby effectively suppressing curling.

[0069] (6) The paper stacking device according to any one of (1) to (5), wherein: The distance between the spray port of the spray mechanism, which sprays the mist water, and the long paper clip is 100 mm or more and 1000 mm or less.

[0070] According to this paper stacking device, the mist water ejected from the ejection port can be fully and completely sprayed onto the long paper.

[0071] (7) The paper stacking device according to any one of (1) to (6), wherein: The paper-stacked stacking device comprises: a sensor for detecting an outer diameter of the paper web; and The control unit operates the spray mechanism when the outer diameter of the roll paper becomes equal to or smaller than a threshold value based on the detection result of the outer diameter from the sensor.

[0072] According to this paper stacking device, the spray mechanism can be activated to spray mist water onto the long paper strips when the outer diameter of the roll paper falls below a threshold value. In other words, the mist water can be sprayed onto the long paper strips at an appropriate time when the roll paper diameter decreases and the curl of the paper becomes stronger.

[0073] This application is based on Japanese Patent Application No. 2024-046556 filed on March 22, 2024, the contents of which are incorporated herein by reference.

Claims

1. A paper laminating device for laminating paper on the front surfaces of a plurality of glass substrates being conveyed, wherein: The paper-stacked stacking device comprises: a discharging mechanism for discharging a long strip of paper from a paper roll, wherein the paper roll is formed by winding the long strip of paper into a roll shape; a cutting mechanism for cutting the long strip of paper released by the releasing mechanism to form paper of a size that overlaps the front surface of the glass substrate; a guiding mechanism for conveying the paper cut by the cutting mechanism to the front side of the glass substrate; as well as The spray mechanism is disposed upstream of the cutting mechanism in a feeding direction of the long paper strip and sprays mist water onto at least one surface of the long paper strip.

2. The paper stacking device according to claim 1, wherein: The feeding mechanism includes a plurality of rollers, and the long paper clip contacts the outer peripheral surfaces of the plurality of rollers. The spray mechanism is arranged upstream of a contact portion with the most downstream roller of the release mechanism.

3. The paper stacking device according to claim 1, wherein: The spray mechanism includes a plurality of sprayers, and the plurality of sprayers spray mist-like water toward the long strip of paper. The plurality of sprayers are arranged at intervals in a width direction perpendicular to a feeding direction of the long paper.

4. The paper laminating device according to claim 1, wherein: The spray mechanism is arranged at a plurality of locations in the feeding direction of the long-shaped paper.

5. The paper laminating device according to claim 1, wherein: The spray mechanism is arranged on the front side and the back side of the long strip of paper.

6. The paper laminating device according to claim 1, wherein: The distance between the spray port of the spray mechanism, which sprays the mist water, and the long paper clip is 100 mm or more and 1000 mm or less.

7. The paper stacking device according to any one of claims 1 to 6, wherein: The paper-stacked stacking device comprises: a sensor for detecting an outer diameter of the paper web; and The control unit operates the spray mechanism when the outer diameter of the roll paper becomes equal to or smaller than a threshold value based on the detection result of the outer diameter from the sensor.

8. The paper laminating device according to claim 1, wherein: The guide mechanism includes a conveyor, a pressing roller, and a guide portion.

9. The paper laminating device according to claim 1, wherein: The guide mechanism further comprises a pad, The mat is provided between the conveyor and the guide.

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