WO2008066315A1

WO2008066315A1 - Sheet attaching apparatus

Info

Publication number: WO2008066315A1
Application number: PCT/KR2007/006040
Authority: WO
Inventors: Seong-Jong Han; Young Jun Park; Dong Bae Lee
Original assignee: Samsung Heavy Ind. Co., Ltd.
Priority date: 2006-11-27
Filing date: 2007-11-27
Publication date: 2008-06-05
Also published as: JP2010510903A; JP4855524B2

Abstract

A sheet attaching apparatus having a first winding unit 610 for supplying a sheet 690, a driving part 400 for movement, and a frame 100 on which the first winding unit 610 and the driving port 400 installed, and a controller 10 includes a nozzle unit 200 detachably attached at the frame 100 and dispersing a glue supplied from an external glue supply line; a guide part 700 detachably attached at the frame 100 and guiding an attachment surface covered with the glue to be covered with the sheet 690; a second winding unit 620 supplying a protection film 691 covering and attaching both side portions of the sheet 690 covering the attachment surface; a roller 600 installed at the frame 100 and pressing the sheet 690 covering the attachment surface and the protection film 691 and spreading the glue uniformly on the attachment surface; and a video camera device 190 electrically connected to the controller 10 to capture a state of a sheet attaching process and send an image information generated therefrom.

Description

SHEET ATTACHING APPARATUS

Technical Field

[I] The present invention relates to a sheet attaching apparatus, more particularly to a sheet attaching apparatus capable of continiously attaching sheets on places where second insulation walls are formed in the cargo tank of a ship.

[2]

Background Art [3] Generally, a sheet attaching work in a cargo tank of a ship or the like is done by manually or performed by using a driving unit simply movable in a horizontal direction. [4] In the manual work, after coating a glue on a place for attaching the sheet in the cargo tank (hereinafter referred to as attachment surface), the sheet is pre-attached thereto by a manual roller. [5] Further, an air pressing board or an air matrix is installed and fixed, then air is supplied thereto. After 10 hours of solidification of the glue, a constant pressure is applied for about 24 hours by the air pressing board or the air matrix pressurized with the air, then the seat is attached and fixed. [6] At this time, at least three workers are needed. One worker performs a first coating with the glue, after testing an amount of glue needed for a unit area and a quality of the glue before attaching the sheet, while another worker performs a work marinating a depth of the glue being coated constantly. At the same time, the other worker needs to clean foreign materials, which causing inconveniences. [7] When the process of the sheet attaching process is done by manually, the process depends on a skill of a worker, which hinders reliable process. [8] The manual process also results in long time of sheet attaching work.

[9] In view of those problems, conventional sheet attaching apparatus includes a base frame capable of attaching the sheet while moving along the both wall around the sheet. [10] In such conventional sheeting attaching apparatus, a nozzle for dispersing the glue is connected to the base frame.

[I I] However, such conventional sheet attaching apparatus has a fixed type nozzle, which causes a difficulty in maintenances and position setting. When the hole of the nozzle is stuck, the whole sheet attaching apparatus needs to be temporarily stopped, which also cause inconvenience during the process.

[12] Further, the conventional sheet attaching apparatus has a disadvantage in that it is difficult to monitor a situation of the sheet attaching process in real time. [13] Such conventional sheeting attaching apparatus has a roller for pressing while rolling, in which the roller simply presses the sheet uniformly. [14] Furthermore, the conventional sheet attaching apparatus is connected with a cooling device and has a plurality of the shoes made of, e.g., cupper plate to support the sheet. [15] However, the conventional sheet attaching apparatus is disadvantageous in that the glue coated by the nozzle is not formed uniformly between the sheet and the attachment surface because the attachment surface to be attached with the sheet in a certain work environment does not have uniform width and surface curvature. [16] Further, the conventional sheet attaching apparatus without means for maintaining the straight movement of the sheet (hereinafter refer to as 'straightness') and for applying tensional force to the sheet while tightly contacting the sheet has a low attachment efficiency. [17] In other words, the conventional sheet attaching device is disadvantageous in that since it presses the glue right after injecting the glue between the attachment surface and the sheet, it can not horizontally spread the glue between the attachment surface and the sheet. [18] In addition, the conventional sheeting apparatus is disadvantageous in that since the glue is cooled before the glue is completely squeezed out by the cooling device of the shoes, it is difficult to spread out the glue between the attachment surface and the sheet. [19] In addition, the conventional sheeting apparatus is disadvantageous in that since it is difficult to monitor the attachment process occurring in the inside of the driving unit by a worker, an error in the attachment process can not be monitored in a real time. [20]

Disclosure of Invention

Technical Problem [21] The present invention provides a sheet attaching apparatus having a nozzle unit capable of being detachably installed and easy maintenances and monitoring the sheet attachment processing in a video image. [22] Further, the sheet attaching apparatus includes a supply roller and a guide part, thereby constantly maintaining a shape of glue pressing or squeeze-out shape, and improving an attachment quality. [23]

Technical Solution [24] The present invention provides a sheet attaching apparatus having a first winding unit for supplying a sheet, a driving part for movement, a frame on which the first winding unit and the driving part is installed, and a controller for control, including: a nozzle unit detachably attached at the frame and dispersing a glue supplied from an external glue supply line; a guide part detachably attached at the frame and guiding an attachment surface covered with the glue to be covered with the sheet; a second winding unit supplying a protection film covering and attaching both side portions of the sheet covering the attachment surface; a roller installed at the frame and pressing the sheet covering the attachment surface and the protection film and spreading the glue uniformly on the attachment surface; and a video camera device electrically connected to the controller to capture a state of a sheet attaching process and send an image information generated therefrom. [25]

Advantageous Effects

[26] Accordingly, the sheet attaching apparatus in accordance with an embodiment of the invention is provided with the nozzle unit, thereby providing easy maintenances. There is advantage in that the clamp configuration provides a convenient adjustment of the installation positions in a left, right, upper, lower directions.

[27] Further, the sheet attaching apparatus in accordance with an embodiment of the invention provides a video camera device, accordingly capable of monitoring the sheet attaching process in a real time, and also monitoring the errors of the process in a real time.

[28] Moreover, the sheet attaching apparatus in accordance with an embodiment of the invention includes a supply roller and a guide part, thereby constantly maintaining a shape of glue pressing or squeeze-out shape, and improving an attachment quality.

[29] Further, the sheet attaching apparatus in accordance with an embodiment of the invention includes a guide part which providing straightness by aligning the direction of the sheet unwinding from the first winding unit and the movement direction of the device.

[30] Furthermore, the sheet attaching apparatus in accordance with an embodiment of the invention provides protection films at both lower portion of the guide part with a pair of the second winding units, thereby providing the supplied protection film on the side portions of the sheet. As a result it prevents the glue from abnormally flowing outside of the sheet and avoids contamination the device.

[31] Further, the sheet attaching apparatus in accordance with an embodiment of the invention includes a roller having a pair of front and rear rollers having a step difference disposed at the front and rear thereof. Therefore, respective rollers can be contacted and rotated in response to the speed of the device and the geometry of the attachment surface. As a result, the glue can be spread while pressed and can be constrained in a predetermined height, thereby improving the straightness and controlling the coating depth of the glue uniformly. [32]

Brief Description of the Drawings

[33] Fig. 1 is a side view showing the configuration of the sheet attaching apparatus in accordance with an embodiment of the invention.

[34] Fig. 2 is a perspective view showing a nozzle unit of the embodiment shown in Fig

1.

[35] Fig. 3 is a side view illustrating a supply roller and guide part of the embodiment shown in Fig 1.

[36] Fig. 4 is a cross sectional view of the supply roller shown in Fig. 3.

[37] Fig. 5 is a front view showing the embodiment shown in Fig. 1.

[38] Fig. 6 is a side view showing the roller shown in Fig. 5.

[39]

Mode for the Invention

[40] Embodiments of the present invention will now be described with reference to accompanying drawings which form a part hereof.

[41] Fig. 1 is a side view showing the configuration of the sheet attaching apparatus in accordance with an embodiment of the invention. Fig. 2 is a perspective view showing a nozzle unit of the embodiment shown in Fig 1. Fig. 3 is a side view illustrating a supply roller and guide part of the embodiment shown in Fig 1. Fig. 4 is a cross sectional view of the supply roller shown in Fig. 3. Fig. 5 is a front view showing the embodiment shown in Fig. 1. Fig. 6 is a side view showing the roller shown in Fig. 5.

[42] Referring to Fig. 1, the sheet attachment apparatus in accordance with the embodiment of present invention includes a frame 100, wherein the frame 100 has a video camera device 190, a nozzle unit 200, a driving unit 400, a supply roller 600, a guide part 700, and a roller unit 800.

[43] A controller 10 is made by a known circuit controlling respective operation of elements electrically connected therein such as the driving unit 400 needed an electric or pneumatic control.

[44] The controller 10 has internal connection port (module) and external connection port (module) of predefined wire or wireless communication standards so that it is connected with the video camera device 190 and an external integration management system 90 by using the above communication ports.

[45] The controller 10 is a control unit using conventional control methods and electrically or electronically connected with the control devices, which controls an electric power supply to the elements described above or to be described later such as the video camera device 190, a driving motor of the driving unit 200, a transfer motor, a driving encoder installed at the frame 100, motor encoders installed in respective motors, contact breakers or driving breakers connected with respective output parts of respective motors, a nozzle pump, a load cell, various sensors, and a potentiometer, and a pneumatic power supply to a pneumatic cylinder, and controls control signals related with respective operation or sensor signals.

[46] In other words, the controller 10 is installed at the frame 100 or predefined remote places and may be integrated with external integration system 90. Such controller 10 supplied with electric power by its own (battery : not shown) or external power sources is a devices supplying the electric power to respective elements to be described later or control signals and performing controls by predefined operation or control algorithms after receiving signals or video signals transmitted from various sensors or the video camera device 190.

[47] The attachment surface 20 may be a bottom surface of grooves formed between top pads of the insulation blocks for the cargo container of the LNG carrier.

[48] The video camera device 190 is installed at the frame 100. The video camera device 190 is connected with an image processing board installed at the controller 10 and sends video or image information obtained from it to the controller.

[49] The video camera device 190 include a camera part such as a digital camera capable of capturing video image, an analog or digital camera, CCTV (Closed-Circuit Television) and a fixing housing 191 to fix those camera part to the frame 100. The video camera device 190 is connected to the controller 10 to transmit the video information generated from capturing the sheet 690, an attachment situation of a protection film 691, a movement situation of the device, and the attachment surface 20 and its surrounding area, thereby being used to check real time operation.

[50] The frame 100 moves along the attachment surface 20 by the driving unit 400. The frame 100 has functions of fixing the controller 10 and supporting respective elements in a horizontal and vertical direction.

[51] The nozzle unit 200 is installed at a vertical member perpendicularly installed at a front horizontal member of the frame 100. The nozzle 200 is a device dispersing or supplying the glue with a constant flow rate by using a plurality of nozzles. The nozzle 200 is connected to an external supply line of a glue supplying system (not shown). Further, the nozzle 200 can adjust installation places of the nozzles by using a first clamp lever, a second clamp lever, or a nozzle clamp device with respect to the frame 100, and detachably installed at the frame.

[52] A plurality of the driving units 400 (e.g. four) are disposed at four corners of the frame 100. Each driving motor of the driving units 400 moves the device in accordance with the present invention in all positions such as horizontal position, vertical position, and overhead position. Further, the motors can generate a driving force in response to a change of the movement velocity by using an encoder (not shown) installed at the frame 100. [53] The supply roller 600 supplies the sheet 690 or protection film 691 to the guide part 700. Specifically, the protection film 691 may be configured as a film having an attachment portion at its one side for attachment purpose. [54] The guide part 700 guides the sheet 690 and the protection film 691 being rolled out from a first wiring unit to the movement direction of the sheet attaching apparatus.

As a result, the sheet attaching apparatus can move straightly while working on the sheet attaching process. [55] Specifically, the guide part 700 is configured to straightly guide the protection film

691 as well as the sheet 690 when it is rolled out as to be described later, thereby performing the guide operation to cover the protection film 691a on the left and right side of the sheet 690a being pressed on the attachment surface 20 as shown Fig. 3. [56] The roller 800 presses the sheet and the protection film 691 at the same time.

[57] Such roller 800 is disposed at the front and rear in a pair. The roller 800 has a front and rear roller with a forward and back step (e.g. a pair of front roller and a pair of rear roller). The roller 800 can rotate respective rollers tightly in response to the movement velocity of the sheet attaching apparatus and the contour of the attaching surface 20.

Therefore, the spread sheet 690a is pressed toward the attaching surface 20 while spreading the glue. Further, the spreading of the glue is controlled in a predefined level and the depth of the glue is uniformly maintained as well as improving the straightness of movement of the rollers. [58] Hereinafter, there will be described relationships between respective elements and operations thereof with reference to Fig. 2 to 6. [59] Referring to Fig. 2, the nozzle unit 200 is disposed at the front of the frame 100 shown Fig. 1. The nozzle unit 200 has an injection opening of a tip portion of the nozzle (221, 211) disposed near a bottom portion of the guide part 700. [60] The nozzle unit 200 includes a plurality of the nozzle gun (210, 220) (e.g. two) connected with the external line of the external glue supply system to obtain the glue. [61] Further, the nozzle unit 200 has a first clamp lever 241 performing engaging or releasing operation to engage or release the nozzle gun 210, 220 separately. [62] The first clamp lever 241 is detachably attached at each angle bracket 240 disposed at the left and right side of an install shaft member 230 of wide bar shape. [63] Each angle bracket 240 has a gun insertion hole 249 penetrating therethrough in an inclined direction to separately install each nozzle gun 210, 220 in the inclined direction. [64] The first clamp lever 1 is engaged or released in a direction perpendicular to a direction of the each gun insertion hole 249 of the angle brackets 240.

[65] To do this, there is provide holes for engagement with screw members of the first clamp lever 241 at the upper portion of the angle bracket 240 in the direction perpendicular to the direction of the gun insertion direction 249.

[66] Accordingly, end portions of the screw members of the first clamp lever 241 penetrated through the holes having threads to be engaged with the screw members and protruded from the holes can contact or cannot contact respective surface of the nozzle gun 210, 220 in response to an engaging operation (a rotation of the lever in a positive direction) or a releasing operation (a rotation of the lever in a negative direction), thereby engaging or releasing the nozzle gun 210, 220.

[67] Each angle bracket 240 has a function of a mounting place for each nozzle gun

210, 220. Accordingly, when there is problem related with the nozzle in the working process, there is a need for the angle bracket 240 to be separately engaged and released. Therefore, each angle bracket 240 is installed at a corner portion of the install shaft member 230 through a rectangular installation member 244 fastened by a stud bolt. The install shaft member 230 is a light weight profile, e.g., a rectangular aluminum profile. In four surfaces of the install shaft member 230, there is provided engagement grooves along its length direction, where nuts (not shown) to be engaged with bolts is to be inserted and fixed. Accordingly, each angular bracket 240 is separately engaged with respective install shaft member 230 in a way that the each stud bolt passed through the bolt hole of the rectangular installation member 244 is engaged with the nut inserted in the install shaft member 230.

[68] Further, an operator can separately adjust a distance between the each injection hole of the nozzle 221, 211 of the nozzle gun 210, 220 and the portion below the guide part 700 shown in the Fig. 1 by adjusting each nozzle gun 210, 220 inserted in the gun insertion hole 249 in a released state of the first clamp lever 241. After the adjustment, the operator can attach the nozzle gun 210, 220 to respective gun insertion holes 249 by tightening back the first clamp lever 241.

[69] Meanwhile, it is preferable that the insertion direction of the gun insertion hole 249 is aligned with an extension direction of the nozzle 221, 211 of each nozzle gun 210, 220 or the nozzle injection direction.

[70] In addition, the nozzle unit 200 further includes clamp units 250 for the nozzle unit fixed at left and right end portions of the install shaft member 230 to be used to fix the nozzle unit 200 to a vertical member 109 vertically disposed at the front horizontal member of the frame 100 shown in Fig. 1.

[71] The clamp unit 250 is detachable type clamp, and has a pair of fixed plates 252,

253. A portion of each fixed plate 252, 253 is fixed with respective left and right end surfaces of the install shaft member 230. [72] Each free end of the fixed plates 252, 253 corresponding to opposite end of a fixed portion to the install shaft member 230 is provided with screw holes 254 penetrating the fixed plate 252, 253 in a depth direction.

[73] The penetrating direction of those screw holes 254 is aligned with each other. A threaded rod 251a of the second clamp lever 251 is engaged with each screw engagement holes 254 by nuts in a known manner.

[74] When the second clamp levers 251 disposed at both ends of the install shaft member 230 are rotated in positive direction, each free end of the fixed plate 252, 253 approaches to each other. Accordingly, Inner surfaces of each fixed plate 252, 253 are fixed to the respective area of the vertical member 10 vertically disposed at the front horizontal member of the frame 100 shown in Fig. 1. As a result, whole nozzle unit 200 can be mounted on the vertical member 109.

[75] Further, when the second clamp levers 251 are rotated in negative direction, the fixed plates 252, 253 approached to each other are separated from the vertical member 109. Each free end of the fixed plate 252, 253 approaches to each other. Accordingly, whole nozzle unit 200 is separated from and moved from the vertical member 109. At this time, the mounting position of the whole nozzle unit 200 can be adjusted in a left, right, upper, and lower direction while the fixed plate 252, 253 slidingly supported by the vertical member 109 in a reliable manner. Then the nozzle unit 200 is mounted back by the tightening operation.

[76] Meanwhile, the nozzle 211, 221 of the nozzle gun 210, 220 of bar shape is extended in an extension direction thereof. Each injection opening of the nozzle 211, 221 is disposed at a position equally divided considering the width of the sheet attachment surface to be attached by a surface of the sheet. Accordingly, the glue can be injected onto the divided places in a constant flow rate.

[77] Meanwhile, the flow rate control of the glue may be done by known glue injection method, e.g., by using a glue injection algorithm pre-stored in the memory of the controller 10 as shown in Fig. 1 and a processing of a processor a controller implementing such glue injection algorithm.

[78] The controller 10 in the Fig. 10 controls the frame 100 to move and, in response to its movement velocity, the injection speed or amount of the supply of the glue in a constant. When controlling the supply of the glue, the controller 10

[79] With the control of the flow rate of the glue injection, the controller 10 in Fig. 1 makes move the frame 100, and supplies the glue to the nozzle gun 210, 220 shown in Fig. 2 with a constant flow rate considering the speed and amount of the glue in response to the movement velocity.

[80] In this case, the glue supplied to the nozzle gun 210, 220 is injected to the attachment surface 20. Further, in response to the movement velocity of the frame 100, the sheet rolled out from the supply roller is guided by the guide part 700 and covers the glue on the attachment surface 20.

[81] While the frame moves, the roller 800 presses the unfolded sheet toward the sheet attachment surface 20 and spreads the glue on the sheet.

[82] Referring to Fig. 3 and 4, the frame 100 includes left and right shaft members 103,

104, the front horizontal member disposed between the left and right members 103, 104, and a plurality of horizontal members, thereby having torsional rigidity.

[83] The frame 100 is provided with the supply roller 600.

[84] The supply roller 600 is mounted on the central portion of the frame 100. The supply roller 600 includes a first winding unit 610 supplying the sheet 690 rolled therein in a foil, coil strip or the like shape in a way of unrolling the sheet 690 to the central portion of the guide part 700, and second winding unit 620 supplying the protection film 691 rolled therein in a way of unrolling the protection film 691 to both lower side portions, e.g. a rotation type tape support 740.

[85] For example, the first winding unit 610 is supported by first support 611, 619 fixed to the left and right member 103, 104 of the main frame, respectively behind the central portion of the frame 100; the second winding unit 620 is supported by plate type second support 621 fixed to the left and right member 103 104, respectively between the first support 611 and the guide part 700.

[86] Further, a friction bar 612 is protruded from one circular side plate shaft of one side of the first winding unit 610 (right direction viewed from front).

[87] The tension adjustment unit 614 for controlling rolled amount of the sheet 690 contacts the friction bar 612. One leading end portion of the tension adjustment unit 614 is assembled with a hinge to pivot. The other leading end portion of the tension adjustment unit 614 is configured to be pressed by a tension adjustment bolt.

[88] A counter rotation protection unit for the sheet 690 is configured in a way of holding the friction bar 612 with frictional force (not shown), in which the holding force is realized by a spring.

[89] A roll fitting part 622 of the second winding unit 620 rotates the rolled protection film 691 by using a bearing.

[90] Further, a rotation type guide step 623 is provided in a front lower portion of the second support 621. The rotation type guide step 623 guides the rolled protection film 691 in the second winding unit 620 with a tension to the guide part 700.

[91] Furthermore, while the sheet attaching apparatus moves, the protection film 691a rolled out from the second winding unit 620 is unfolded in an opposite direction of the movement direction of the sheet attaching apparatus at the rotation type tape support 740 changing its direction while moving around the rotation type tape support 740. At this time, with the effect of the guide function of the rotation type tape support 740, the protection film 691a covers the both side portions of the unfolded sheet 690a and attachment surfaces 20 near the both side portions, respectively.

[92] The attached protection film 691a seals the glue abnormally flowing, thereby avoiding an accident, e.g. attaching a portion of the glue to the sheet attaching apparatus, or the like. Therefore, the shape of pressing or squeeze-out of the glue can be maintained in a constant rate.

[93] Further, the guide part 700 in the Fig. 3 is vertically disposed with respect to the frame 100 at a distant place from the supply roller 600 in a front direction.

[94] The guide part 700 has a width corresponding to the sheet 690, 690a, and includes a curve plate 710 having both curved end portions and straight central portion; a support plates 720 vertically fixed at both curve plate 710, respectively; a pair of support bracket 730, 731 fixed to outer portion of the support plate 720 and engaged with the left and right member 103, 104 for support; and the rotation type tape support 740 rotatively engaged with at the both ends of the curve plate 710, respectively.

[95] The guide part 700 constrains the rolled out sheet 690 from the first winding unit

610 not to slide to both sides thereof by the guide support 721 formed at the frontal edge of the support plate 720, thereby providing straightness conforming to the rolled out direction of the sheet 690 and the movement direction of the sheet attaching apparatus.

[96] Moreover, a plurality of the protection part 722, 723 with a thin and shallow shape and having a width corresponding to the width of the guide part 700 are fixed at the upper and lower outer end portion of the guided support, respectively.

[97] When the rolled sheet 690 is rolled out and then slides along the central portion of the straight surface corresponding to the central portion of the curve plate 710 in a downward direction, the pair of the protection part 722, 723 prevents the sliding sheet from escaping from the curve plate 710. Accordingly, under the protection from the protection part 722, 723, the rolled out sheet 690a can be guided to the attachment surface 20 without escaping from the guide part 700.

[98] As shown in Fig. 4, the first winding unit 610 includes a first winding shaft member 615 and a second winding shaft member 616 that are rotatively engaged with first supports 611. 619 vertically disposed at the left and right member 103, 104 of the frame, respectively and centered each other.

[99] One leading end portion of the first winding shaft member 615 is provided with the friction bar 612. The other leading end portion of the first winding shaft member 615 is provided with a first circular constraint plate 615b connected with the first hub 615a. Here, support bars 695 for the sheet are inserted into the inner side surface of the first hub 615a.

[100] A second winding shaft member 616 is provided with a second circular constraint plate 616b connected with a second hub 616a supporting the support bars 695 for the sheet 690.

[101] Further, one leading end portion of the second winding shaft member 616 is assembled with an extension shaft member 617a and a shaft member transfer lever 617 one after the other.

[102] The pivot type shaft member transfer member lever helps quick replace of the sheet

690.

[103] Accordingly, the pivot type shaft member transfer lever 617 is disposed at outside of the first support 619, is pivotably connected with an end portion of the extension shaft member 617a and has a pivotable pressing end portion 617b. A spring block 618 is interposed between the other end portion of the extension shaft member 617a and the first winding shaft member 616.

[104] An operator upwardly or downwardly moves the pivot type shaft member transfer member 617 to lock or release.

[105] When the shaft member transfer lever 617 is locked, the first and second circular constraint plates 615b, 616b contracts the both sides of the support bar 695 for the sheet 690, thereby supporting the first a second hub 615a, 616a with the support 695 then rotating with the first and second winding shaft member 615, 616.

[106] When the shaft member transfer lever 617 is released, the first and second circular constraint plates 615b, 616b are retracted back to their original position with spring force of the spring block 618, thereby escaping from the both ends of the support bar 695 for the sheet 690. Accordingly, the support bar 695 can be escaped from the first and second hub 615a, 616a. As a result, used support 695 for the sheet 690 can be quickly removed and new sheet roll can be installed.

[107] As shown in Fig. 5 and 6, the roller 800 spreads the glue while pressing the sheet with a constant pressure, constrains the spreads of the glue in a predetermined range, improves the straightness, and controls the coating depth of the glue in a constant value.

[108] Specifically, the roller 800 has a hinge configuration to transfer surface pressures of a plurality of the forward and backward roller 880, 88Oa, 890, 890a.

[109] For this configuration, the roller 800 is assembled with a cylinder bracket 810 fixed at a central portion of the horizontal member of the frame; a pneumatic cylinder 812 installed at the central portion of the cylinder bracket 810 and having a cylinder shaft member 811 for applying the pneumatic pressure in a downward direction; a first joint bar 820 assembled with lower end portion of the cylinder shaft member 811; a plurality of support bush 822 of the frame 100; and stripper bolts 825 engaged with both end portion of the first joint bar 820, respectively through oil-less bearings 823. With this assembly, the height of the pneumatic cylinder 812 is controlled and the shock capable of being generated when attaching the sheet is absorbed.

[110] Here, a central joint part 821 is protruded from a bottom portion of the central portion of the first joint bar 820 in a downward direction.

[I l l] Further, the roller 800 is provided with another parallel type second joint bar 830 at a lower portion perpendicular to the first joint bar 820. The central joint part 821 of the first joint bar 820 is hingedly connected with at a central portion of the second joint bar 830. Accordingly, the second joint bar 830 can be rolled about the hinge 831.

[112] Furthermore, left and right end portion of the second joint bar 830 are hingedly connected with the upper portions of the vertical support member 840 through another respective hinges 832.

[113] The bottom portion of the each vertical support member 840 is fixed to the central portion of a roller upper plate 850. Such roller upper plate 850 has a pair of roller side plate 860.

[114] In other words, each roller side plate 860 is fixed at the both end portion of the roller upper plate 850 in a downward direction.

[115] A pair of front roller 880, 88Oa and a pair of rear roller 890, 890a is rotatively connected with rotation shaft member 870, 871 in a front and rear portion between the roller side plates 860, respectively.

[116] The front and rear rollers 880, 88Oa, 890, 890a are of shaft shape or hollow shaft shape, and external configuration thereof will be described.

[117] The front and rear rollers 880, 88Oa, 890, 890a includes guide steps 881, 881a, 891,

891a relatively protruding therefrom in a radial direction at outer leading end portions thereof, respectively, groove portions 882 at inner leading end portions thereof, and circumference surfaces 883, 884 between the inner leading end portions and the guide steps 881, 881a, 891, 891a.

[118] Specifically, each guide steps 881a, 891a of a pair of the front roller 88Oa and rear roller 890a disposed at left side is located at the left end portions, whereas each guide steps 881, 891 of a pair of the front roller 880, 890 disposed at right side is located at the right end portions.

[119] In this case, each guide steps 881, 881a, 891, 891a is located at a position capable of pressing the protection film, and the circumference surfaces 883, 884 of the front and rear roller 880, 88Oa, 890, 890a between the each guide steps 881, 881a, 891, 891a and the groove portions 882 are located at a position capable of pressing the sheet.

[120] As shown in Fig. 6, the front rollers 880, 88Oa and rear rollers 890, 890a includes front and rear step tl, t2 of different size in a small amount corresponding to a distance between a surface of the guide steps 881, 881a, 891, 891a and a surface of the circumference surfaces 883 and 884.

[121] In other words, the front step tl of the front rollers 880, 88Oa has relatively high height than the rear step t2 of the rear rollers 890, 890a. It is preferable that the height of the rear step t2 corresponds to a value adding the depths of the sheet and the glue.

[122] Accordingly, the glue, at first, spreads freely and widely between the bottom surface of the sheet and the attachment surface by the front roller 880, 88Oa. Secondly, the glue has a constant height constrained in the height of the rear step t2 by the rear roller 890, 890a.

[123] Inner side portions of the roller side plates 860 between the front rollers 880, 88Oa and rear rollers 890, 890a is rotatively connected with the guide rollers 895 in a wheel shape, respectively.

[124] Since such guide rollers 895 press edge portions of the sheet covered with protection film, the straightness of the front rollers 880, 88Oa and rear rollers 890, 890a are improved, and the spreads of the glue is constrained in a predetermined value.

[125]

Claims

[1] A sheet attaching apparatus having a first winding unit for supplying a sheet, a driving part for movement, a frame on which the the first winding unit and the driving part is installed and a controller comprising: a nozzle unit detachably attached at the frame and dispersing a glue supplied from an external glue supply line; a guide part detachably attached at the frame and guiding an attachment surface covered with the glue to be covered with the sheet; a second winding unit supplying a protection film covering and attaching both side portions of the sheet covering the attachment surface; and a roller installed at the frame and pressing the sheet covering the attachment surface and the protection film and spreading the glue uniformly on the attachment surface. [2] The sheet attaching apparatus of claim 1, further comprising a video camera device electrically connected to the controller to capture a state of a sheet attaching process and send an image information generated therefrom. [3] The sheet attaching apparatus of claim 2, wherein the state of the sheet attaching process is a sheet attachment status, a device movement status, the attachment surface, and the surrounding area thereof. [4] The sheet attaching apparatus of claim 2, wherein the video camera device includes a capture unit capable of capturing video image and a fixing housing to install and fix the video camera device to the frame. [5] The sheet attaching apparatus of claim 2, wherein the capture unit is a digital camera capable of capturing video image, a camcorder, and CCTV

(Closed-Circuit Television) camera. [6] The sheet attaching apparatus of claim 1 or 2, wherein the nozzle unit includes: a nozzle gun connected with the external glue supply line and supplied by the glue; a nozzle dispersing the glue supplied through the nozzle gun to the attachment surface; an angle bracket fixing the connected nozzle gun and the nozzle to the frame; and a first clamp lever for engaging the nozzle with the angle bracket and releasing the nozzle from the bracket. [7] The sheet attaching apparatus of claim 6, wherein the nozzle unit further includes a nozzle unit clamp for attaching the angle bracket to the frame. [8] The sheet attaching apparatus of claim 6, wherein the nozzle clamp includes: a pair of fixed plates fixing their one end portion at each left and right end portion of an installation shaft member installed at the frame; and a second clamp lever engaged with a screw shaft member penetrating through a pair of free ends of the other ends of the pair of the fixed plates in a depth direction. [9] The sheet attaching apparatus of claim 1, wherein the guide part includes: a curve plate having curved portions at both end portions thereof in an opposite direction of the device movement direction and a straight surface formed central portion thereof; and a support plate vertically fixed at the both ends of the curve plate and having a guide support having a predetermined height at the front edge thereof. [10] The sheet attaching apparatus of claim 9, wherein the guide support includes a plurality of protection parts having a thin and shallow shape and having a width corresponding to a width of the guide part at upper and lower outer portions thereof. [11] The sheet attaching apparatus of claim 1 or 2, further comprising a rotation type tape suppor rotatively connected at both lower portions the curve plate to supply the protection film. [12] The sheet attaching apparatus of claim 1 or 2, wherein the roller includes: a pair of a front roller and a rear roller disposed at front and rear; a cylinder providing pressing force to the front roller and the rear roller; a second joint bar hihgedly connected with the cylinder shaft member at a central join part; vertical support shaft members hingedly connected at both end portions of the second joint bar, seperately; a left and a right roller upper plates connected with the both vertical support shaft members; and a roller wheel rotatively installed at the left and the right roller upper plates seperately in a front and a rear positons. [13] The sheet attaching apparatus of claim 12 wherein the roller has the front roller having more high step than that of the rear roller. [14] The sheet attaching apparatus of claim 12, wherein the roller further includes: a bush installed at the frame at both end portions thereof interposing the cylinder; an oil-less bearing inserted into a hollow portion of the bush and installed thereto; a stripper bolt engaged through the oil-less bearing; and a first joint bar engaged with the stripper bolt at both end portion thereof and engaged with the cylinder shaft member, the roller controls a height of the cylinder and absorbs a shock when pressing the sheet. [15] The sheet attaching apparatus of claim 1 or 2, wherein the first winding unit includes: a first support to install the first winding unit to the frame; a support bar of hollow shape, the sheet surrunding the support bar; a first and a second circular constraints insterted at both end portions of the support bar; a first hub and a second hub installed at central portions of the first and the second circular constraints; a first winding shaft member disposed between the first support and the first circular constraint plate and rotatively connected with the first hub and the first support; a second winding shaft member disposed between the first support and the second circular constraint plate and rotatively connected with the second hub and the first support; a spring block instered in the second winding shaft member and pressing the second circular constrain plate to the first circular constraint plate; and a shaft member transfer lever providing a pressing force of releasing the pressing force to the spring block to engage the support bar wound with the sheet and release the support bar to rotate, the shaft member transfer lever being connected between the second wind shaft member and the first support. [16] The sheet attaching apparatus of claim 15, wherein the first winding unit includes a friction bar to prevent counter rotation by using a frictional force. [17] The sheet attaching apparatus of claim 1 or 2, wherein the second winding unit includes: a second support to fix at the frame; a roll insertion part in which a roll covered with the protection film can be rotatively installed; a rotation type tape support guiding the protection th the attachment surface.