Workpiece bonding device and workpiece bonding method

Abstract

To provide a work bonding device capable of improving a productivity of a bonding process by shortening a time required for one bonding process of a first work and a second work.SOLUTION: A work bonding device of the present invention includes a sheet supply mechanism 2, a work mounting table 3, a work transport mechanism 4, a rotary bonding table 5, a bonding mechanism 6, and the like. When an initial bonding process including a preparation process is completed, transfer of a second work W2 by the work transport mechanism 4, bonding of both works W1 and W2 by a bonding roller 37, and reversal drive of the rotary bonding table 5 by a table driving mechanism 30 are continuously and repeatedly performed in described order to form a bonded body of both works W1 and W2 on each of bonding surfaces 31 of the rotary bonding table 5 in a layered manner.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a workpiece laminating apparatus and a workpiece laminating method for laminating a sheet-like workpiece to a flat plate-like workpiece. [Background technology]

[0002] The present applicant has previously proposed this type of work lamination device (Patent Document 1). The work lamination device of Patent Document 1 is composed of a conveyor device that intermittently feeds a first work adsorbed on a conveyor belt toward a lamination position, a turntable that intermittently rotates a second work adsorbed on a plurality of adsorption tables to make it face the first work fed to the lamination position, a first peeling device, a second peeling device, a positioning device that corrects the positional deviation of each work during the intermittent rotation of the turntable, and a lamination device that presses the first work after positioning against the second work with a lamination roller to laminate the two workpieces. The work lamination device of Patent Document 1 is used when laminating a functional sheet such as a polarizing sheet, an anti-reflection film, an electromagnetic wave shielding film, or an ultraviolet ray shielding film to a flat workpiece such as a liquid crystal substrate or a plasma display substrate. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2012-3037 A Summary of the Invention [Problem to be solved by the invention]

[0004] According to the work laminating device of Patent Document 1, the supply of the first and second workpieces, the peeling off of the protective paper, the positioning, and the lamination by the laminating roller can be performed continuously, so that the waiting time between each process can be shortened, the time required for the series of laminating processes can be shortened, and productivity can be improved. However, since it is necessary to sequentially supply the workpieces, peel off the protective paper, position the workpieces, and laminate the workpieces by the laminating roller while rotating the turntable by 90 degrees at a time up to 270 degrees, and then to reversely rotate the turntable by 270 degrees to return it to the initial state, although the waiting time between each process can be shortened to some extent, there is a limit to the degree to which the time required for the series of laminating processes can be shortened.

[0005] An object of the present invention is to provide a work bonding device and a work bonding method which can shorten the time required for each bonding process of the two workpieces and further improve the productivity of the bonding process by continuously bonding the first workpiece and the second workpiece to form a group of bonded bodies of the two workpieces in a layered state. [Means for solving the problem]

[0006] The work bonding device according to the present invention includes a sheet supply mechanism 2 which feeds and supplies a continuous sheet-like first work W1, a rotary laminating table 5 which has a plurality of bonding surfaces 31 and is driven to rotate about a horizontal axis to hold one of the bonding surfaces 31 in a bonding position while winding up the first work W1, a work mounting table 3 which is disposed adjacent to the rotary laminating table 5 and on which a flat second work W2 is stacked and mounted, a work transport mechanism 4 which adsorbs and holds the second work W2 on the work mounting table 3 and transports it onto the bonding surface 31 held in the bonding position, and a bonding mechanism 6 which presses the first work W1 connected to the rotary laminating table 5 against the second work W2 with a laminating roller 37 to bond both workpieces W1 and W2 together. The rotary laminating table 5 is intermittently rotated by the table driving mechanism 30, and while winding up the first work W1, the laminate of the first work W1 and the second work W2 is withdrawn from the laminating position, and a new laminating surface 31 is held in a laminating position. The transfer of the second work W2 onto the new laminating surface 31 by the work transport mechanism 4, the laminating of the first work W1 and the second work W2 by the laminating mechanism 6, and the rotational driving of the rotary laminating table 5 by the table driving mechanism 30 are repeatedly and continuously performed, so that a group of laminates of the first work W1 and the second work W2 are laminated on the laminating surface 31 of the rotary laminating table 5.

[0007] The workpiece placement table 3 is composed of a front stage placement table 3A and a rear stage placement table 3B, and the rear stage placement table 3B is disposed between the rotary laminating table 5 and the front stage placement table 3A. The workpiece transport mechanism 4 is composed of a front stage transport mechanism 4A that adsorbs and holds the second workpiece W2 on the front stage placement table 3A and transports it to the rear stage placement table 3B, and a rear stage transport mechanism 4B that adsorbs and holds the second workpiece W2 on the rear stage placement table 3B and transports it onto the laminating surface 31 of the rotary laminating table 5. The front stage transport mechanism 4A and the rear stage transport mechanism 4B move back and forth, and the front stage transport mechanism 4A transports the second workpiece W2 from the front stage placement table 3A to the rear stage placement table 3B, and the rear stage transport mechanism 4B transports the second workpiece W2 on the rear stage placement table 3B onto the laminating surface 31 of the rotary laminating table 5.

[0008] The apparatus includes a welding mechanism 7 that welds and fixes the outer edge of the bonding end of the first work W1 bonded to the second work W2 to the first work W1 in the lower layer.

[0009] The present invention also relates to a method for laminating a workpiece using a workpiece laminating device including: a sheet supply mechanism 2 which pays out and supplies a continuous sheet-like first workpiece W1; a rotary laminating table 5 which has a plurality of laminating surfaces 31 and is driven to rotate about a horizontal axis to hold one of the laminating surfaces 31 in a laminating position while winding up the first workpiece W1; a workpiece mounting table 3 which is disposed adjacent to the rotary laminating table 5 and on which a flat plate-like second workpiece W2 is mounted in a stack; a workpiece transport mechanism 4 which adsorbs and holds the second workpiece W2 on the workpiece mounting table 3 and transports it onto the laminating surface 31 held in the laminating position; and a laminating mechanism 6 which presses the first workpiece W1 connected to the rotary laminating table 5 against the second workpiece W2 with a laminating roller 37 to laminate both workpieces W1 and W2. The lamination process includes a preparation step in which the unwound end of the first work W1 in the form of a continuous sheet unwound from the sheet supply mechanism 2 is fixed to the clamp 26 of the rotary lamination table 5; a work transport step in which the second work W2 on the work mounting table 3 arranged adjacent to the rotary lamination table 5 is held by the work transport mechanism 4 and transported to the lamination surface 31 of the rotary lamination table 5; a lamination step in which the first work W1 connected to the rotary lamination table 5 is pressed against the second work W2 by the lamination roller 37 of the lamination mechanism 6 to laminate both workpieces W1 and W2; and a lamination table rotation step in which the rotary lamination table 5 is intermittently rotated to retract the laminate of the first work W1 and the second work W2 from the lamination position while winding up the first work W1, and hold the new lamination surface 31 in a lamination posture. The method is characterized in that the work transport step, lamination step, and lamination table rotation step are repeatedly and continuously performed to form a group of laminated bodies in which the first work W1 and the second work W2 are laminated on the lamination surface 31 of the rotating lamination table 5.

[0010] This includes a welding process in which, while the outer edge of the lamination end of the first work W1 is held down by the lamination roller 37, the first work W1 between the lamination end of the first work W1 and the lamination roller 37 is welded and fixed to the lower first work W1. Effect of the Invention

[0011] The work bonding device according to the present invention is composed of a sheet supply mechanism 2, a work placement table 3, a work transport mechanism 4, a rotary laminating table 5, and a laminating mechanism 6, and after the initial laminating process including laminating preparation is completed, the work transport mechanism 4 transports the second work W2, the laminating roller 37 laminates the two workpieces W1 and W2, and the table drive mechanism 30 rotates the rotary laminating table 5. This allows the laminating body of the two workpieces W1 and W2 to be laminated on each laminating surface 31 of the rotary laminating table 5. Unlike the conventional laminating device, the work bonding device according to the present invention does not need to return the rotary laminating table to its initial state for each series of laminating cycles, and accordingly, the time required for laminating the first workpiece W1 and the second workpiece W2 per laminating process can be shortened, thereby improving the productivity of the laminating process.

[0012] The front stage mounting table 3A and the rear stage mounting table 3B constitute the work mounting table 3, and the front stage transport mechanism 4A and the rear stage transport mechanism 4B constitute the work transport mechanism 4. According to this work bonding device, when the work is transferred, the front stage transport mechanism 4A and the rear stage transport mechanism 4B move back and forth to transfer the second work W2 from the front stage mounting table 3A to the rear stage mounting table 3B, and the second work W2 on the rear stage mounting table 3B can be transferred onto the bonding surface 31 of the rotary laminating table 5, so that the time required for the work transfer can be shortened and the time required for each laminating process can be shortened accordingly. In addition, in a case where the upper surface of the second work W2 is covered with a protective paper, while the second work W2 on the rear stage mounting table 3B is transferred to the rotary laminating table 5 by the rear stage transport mechanism 4B, the protective paper of the second work W2 transferred by the front stage transport mechanism 4A can be peeled off by the peeling device, so that the processing time required for the series of laminating processes can be further shortened.

[0013] The lamination table 5 is provided with a welding mechanism 7 that welds and fixes the outer edge of the lamination end of the first work W1 laminated to the second work W2 to the first work W1 in the lower layer. With this, the first work W1 between the lamination end of the first work W1 and the lamination roller 37 can be fixed integrally to the first work W1 in the lower layer. Therefore, when the rotary lamination table 5 is rotated and driven by the table drive mechanism 30, the tension of the first work W1 acts on the lamination surface of both workpieces W1 and W2, and it is possible to reliably prevent the first work W1 from peeling off from the second work W2. Therefore, the first work W1 can be wound up by the rotary lamination table 5 in a stable state, which is continuous with lamination of the first work W1 to the second work W2.

[0014] In the work bonding method according to the present invention, the preparation step, the work transfer step, the bonding step, and the bonding table inversion step are performed in sequence, so that the first work W1 can be continuously bonded to the second work W2. In particular, in the continuous bonding step after the initial bonding process including the preparation step is completed, the work transfer step, the bonding step, the welding step, and the bonding table inversion step are repeatedly performed in succession, so that a group of bonded bodies in which the first work W1 and the second work W2 are bonded to each other can be continuously formed on the multiple bonding surfaces 31 of the rotary bonding table 5. According to this work bonding method, a group of bonded bodies of both work W1 and W2 can be formed in a layered state on each of the bonding surfaces 31 of the rotary bonding table 5. Therefore, unlike the conventional bonding device, it is not necessary to return the rotary bonding table to the initial state for each series of bonding cycles, and the time required for each bonding process of the first work W1 and the second work W2 can be shortened, thereby improving the productivity of the bonding process.

[0015] If the method includes a welding process of welding and fixing the first work W1 between the lamination end of the first work W1 and the lamination roller 37 to the first work W1 in the lower layer while the outer edge of the lamination end of the first work W1 is pressed by the lamination roller 37, the first work W1 between the lamination end of the first work W1 and the lamination roller 37 can be fixed integrally to the first work W1 in the lower layer. Therefore, when the rotary lamination table 5 is rotated and driven by the table drive mechanism 30, the tension of the first work W1 acts on the lamination surface of both workpieces W1 and W2, and it is possible to reliably prevent the first work W1 from peeling off from the second work W2. Therefore, the winding of the first work W1 by the rotary lamination table 5, which is subsequent to lamination of the first work W1 to the second work W2, can be always performed in a stable state. [Brief description of the drawings]

[0016] [Figure 1] FIG. 2 is a front view of the workpiece bonding device according to the embodiment of the present invention. [Diagram 2] FIG. 2 is a view taken along the arrow A in FIG. [Diagram 3] FIG. 2 is a view taken along the arrow B in FIG. [Figure 4] FIG. [Diagram 5] FIG. 11 is an explanatory diagram showing a work transfer step in the bonding procedure. [Figure 6] FIG. 11 is an explanatory diagram showing a work transfer step and a lamination step of the lamination procedure. [Figure 7] FIG. 11 is an explanatory diagram showing a lamination table reversing step and a second workpiece transport step in the lamination procedure. [Figure 8] FIG. 11 is an explanatory diagram showing a second lamination step and a welding step in the lamination procedure. [Figure 9] 11 is an explanatory diagram showing a second lamination table reversing step and a third workpiece transport step in the lamination procedure. FIG. [Figure 10] FIG. 13 is an explanatory diagram showing successive lamination steps (a third lamination step and a second welding step) of the lamination procedure. [Figure 11] FIG. 11 is an explanatory diagram showing a sheet cutting step of the lamination procedure. [Figure 12] FIG. 11 is a front view showing a schematic view of the blank bonded body after a sheet cutting process. [Figure 13] 1A and 1B are a perspective view and a front view of a blank laminate after finish cutting. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] (Embodiment) Figures 1 to 13 show an embodiment of the work bonding device according to the present invention. In this embodiment, front, rear, left, right, and up and down refer to the crossed arrows shown in Figures 1 and 2 and the indications of front, rear, left, right, and up and down written near each arrow. In Figure 1, the work bonding device has a pair of front and rear frames 1·1, and a sheet supply mechanism 2, a work placement table 3, a work transport mechanism 4, a rotary bonding table 5, a bonding mechanism 6, a welding mechanism 7, etc. are arranged between the front and rear frames 1·1.

[0018] The sheet supply mechanism 2 is composed of a roll shaft 10 rotatably supported by the frame 1·1 and supporting the original roll R of the first work W1, a brake (not shown) that keeps the amount of sheet fed from the original roll R constant, three guide rollers 11 arranged on the upper part of the frame 1·1, and a tension mechanism 12 arranged below the two guide rollers 11 near the original roll R and applying a constant tension to the first work W1 while moving up and down relative to both rollers 11. The continuous sheet-like first work W1 fed from the original roll R is reversed and guided downward by the first guide roller 11, reversed and guided upward by the tension roller 13 of the tension mechanism 12, guided horizontally by the second and third guide rollers 11, and fed and guided in a downward inclined manner toward the rotary laminating table 5 while being supported by the third guide roller 11.

[0019] The workpiece placement table 3 is composed of a front stage placement table 3A and a rear stage placement table 3B. The front stage placement table 3A and the rear stage placement table 3B are arranged between the rotary lamination table 5 and the sheet supply mechanism 2. The front stage placement table 3A is arranged near the sheet supply mechanism 2, and the rear stage placement table 3B is arranged between the rotary lamination table 5 and the front stage placement table 3A. A group of flat plate-shaped second workpieces W2 are placed on the front stage placement table 3A. The platform part of the front stage placement table 3A is lifted by a lifting mechanism (not shown) by the thickness of the second workpiece W2 every time the second workpiece W2 is transferred. A pair of front stage cameras 8A are provided on the lower surface of the rear stage placement table 3B, one on each side, to detect the placement posture of the second workpiece W2 on the rear stage placement table 3B.

[0020] The work transport mechanism 4 is composed of a front-stage transport mechanism 4A that adsorbs and holds the second work W2 on the front-stage mounting table 3A and transports it to the rear-stage mounting table 3B, and a rear-stage transport mechanism 4B that adsorbs and holds the second work W2 on the rear-stage mounting table 3B and transports it onto the laminating surface 31 of the rotary laminating table 5. The front-stage and rear-stage transport mechanisms 4A and 4B are guided and supported by guide rails 15 fixed to the front and rear frames 1 and 1 so as to be freely slidable left and right. 2, the front and rear transport mechanisms 4A and 4B are composed of an inverted L-shaped transport frame 16 guided and supported by front and rear guide rails 15, front and rear operation mechanisms 17 fixed on the transport frame 16, a transport table 19 supported by an elevation shaft 18 of the operation mechanism 17, a suction stand 20 provided on the underside of the transport table 19 for suctioning and holding the second work W2, and a drive mechanism (not shown) arranged between the transport frame 16 and either the front or rear frame 1 for reciprocatingly driving each transport mechanism 4A and 4B. In the rear transport mechanism 4B, a holding roller 21 is provided on the side edge of the suction stand 20 on the rotary laminating stand 5 side to receive the first work W1 when the rear transport mechanism 4B transfers the second work W2 to the rotary laminating stand 5. The operation mechanism 17 of the rear transport mechanism 4B is also provided with a positioning device.

[0021] As shown in FIG. 3 and FIG. 4, the rotary laminating table 5 is composed of a flat plate 25 fixed between a pair of front and rear frames 24, a clamp 26 fixed to the side end of the plate 25, a winding roller 27 arranged at the side end of the frame 24, and a rotating shaft 28 fixed to the front and rear surfaces of the frame 24. The rotating shaft 28 is rotatably supported by bearings 29 fixed to the front and rear frames 1·1. Reference numeral 30 denotes a table drive mechanism that intermittently reverses (rotates) the rotary laminating table 5. By intermittently reversely driving (rotates) the rotary laminating table 5 by the table drive mechanism 30, the first work W1 can be wound up by the plate 25 and the winding roller 27 while the pair of upper and lower laminating surfaces 31 of the plate 25 can be alternately opposed to the first work W1. A pair of left and right rear stage cameras 8B are provided above the rotary laminating table 5 to detect the placement posture of the second work W2 transferred onto the plate 25. The rear stage camera 8B detects the placement posture of the second workpiece W2 after the first workpiece W1 has been bonded.

[0022] 1 and 3, the laminating mechanism 6 is composed of a slide frame 34 that is guided and supported by the guide rails 15, an operation mechanism 35 that is fixed to the front and rear of the underside of the slide frame 34, a roller frame 36 that is raised and lowered by the operation mechanism 35, and a laminating roller 37 that is rotatably supported by the roller frame 36. A guide rail 38 that is long in the front-rear direction is fixed to the top surface of the slide frame 34, and this guide rail 38 guides and supports the welding mechanism 7 so that it can move back and forth along the central axis of the laminating roller 37.

[0023] 3, the welding mechanism 7 is composed of a slide block 41 guided by a guide rail 38, an operation mechanism 42 fixed to the slide block 41, a welding head 43 which is raised and lowered by the operation mechanism 42, and the like. A cutting mechanism 45 for cutting the first workpiece W1 is provided in the slide block 41 in addition to the welding mechanism 7. The cutting mechanism 45 is composed of an operation mechanism 46 fixed to the slide block 41 like the welding mechanism 7, a cutter 47 which is raised and lowered by the operation mechanism 46, and the like.

[0024] The work bonding device configured as described above bonds the first work W1 to the top surface of the second work W2 in the manner described below. In the bonding process of the two workpieces W1 and W2, a preparation process, a work transfer process, a bonding process, a welding process, a bonding table reversal process (a bonding table rotation process), a continuous bonding process, a sheet cutting process, and a finish cutting process are carried out in this order.

[0025] In the preparation process, the first work W1 fed from the sheet supply mechanism 2 is wound around each guide roller 11 and tension roller 13 as shown in Fig. 1, and then the fed end of the first work W1 is wound around the left winding roller 27 and then fixed to the clamp 26 on the left back side of the rotary laminating table 5. In this state, the tension mechanism 12 is raised and lowered to apply a certain tension to the first work W1. In addition, the second work W2 on the front stage mounting table 3A is transferred to the rear stage mounting table 3B by the front stage conveying mechanism 4A.

[0026] In the work transfer step, as shown in Fig. 5(a)-(b), the second work W2 on the work placement table 3 is held by the work transfer mechanism 4, and then transferred to the laminating surface 31 on the upper surface side of the rotary laminating table 5 to face the first work W1. Specifically, the second work W2 on the rear stage placement table 3B is held by the rear stage transfer mechanism 4B and transferred onto the laminating surface 31 of the rotary laminating table 5, and in parallel, the second work W2 on the front stage placement table 3A is held by the front stage transfer mechanism 4A and transferred to the rear stage placement table 3B. At this time, the second work W2 is suction-held by the suction tables 20 of the front and rear stage transfer mechanisms 4A and 4B, and while the transfer table 19 and the suction table 20 are raised and lowered by the operation mechanism 17, both workpieces W1 and W2 are suction-held or released from suction to transfer both workpieces W1 and W2. 5(b), the holding roller 21 receives the first work W1 and holds it to the side of the lamination surface 31 before the rear-stage conveying mechanism 4B finishes moving onto the lamination surface 31 of the rotary lamination table 5. The placement posture of the second work W2 transferred onto the rear-stage placement table 3B by the front-stage conveying mechanism 4A is detected and stored by the front-stage camera 8A.

[0027] In the first lamination process, the first workpiece W1 covering the upper surface of the rotary lamination table 5 is pressed against the second workpiece W2 by the lamination roller 37 of the lamination mechanism 6 to laminate both workpieces W1 and W2. Specifically, as shown in FIG. 6(a), the roller frame 36 is lowered by the operation mechanism 35, and the lamination roller 37 presses the first workpiece W1 against the second workpiece W2. In this state, as shown in FIG. 6(b), the lamination mechanism 6 is moved toward the rear stage mounting table 3B side (right side) to laminate both workpieces W1 and W2. When lamination of both workpieces W1 and W2 is completed, the lamination posture of the second workpiece W2 is detected by the rear stage camera 8B and stored. When the first lamination process is completed, the first workpiece W1 does not exist under (the lower surface side of) the first workpiece W1 laminated to the second workpiece W2, so the welding process is not performed.

[0028] Next, the second work transfer process is performed. In the second work transfer process, as shown in FIG. 7(a), the lamination mechanism 6 is returned to the standby position on the lamination start side, and then the rotary lamination table 5 is reversely driven in the counterclockwise direction by the table drive mechanism 30, and the first work W1 is wound up by the base plate 25 and the winding roller 27, while the laminate of the first work W1 and the second work W2 is retreated to the lower surface side of the rotary lamination table 5 as shown in FIG. 7(b), and the new lamination surface 31 is made to face the first work W1. In this state, as shown in FIG. 7(c), the second work W2 on the front stage placement table 3A and the second work W2 on the rear stage placement table 3B are held by the front stage conveying mechanism 4A and the rear stage conveying mechanism 4B, and are transferred onto the lamination surface 31 of the rear stage placement table 3B and the rotary lamination table 5.

[0029] Next, the second lamination process is performed. In the second lamination process, as in the first lamination process, the lamination roller 37 presses the first workpiece W1 against the second workpiece W2, and in this state, the lamination mechanism 6 moves toward the rear stage mounting table 3B to laminate both workpieces W1 and W2 (see Fig. 8(a)(b)). When lamination of both workpieces W1 and W2 is completed, the lamination posture of the second workpiece W2 is detected by the rear stage camera 8B and stored.

[0030] After the second lamination process is completed, the first welding process is performed. In the welding process, as shown in FIG. 8(c), while the first workpiece W1 is pressed down by the lamination roller 37, the first workpiece W1 between the lamination end of the first workpiece W1 and the lamination roller 37 is welded and fixed to the first workpiece W1 in the lower layer by the welding mechanism 7. In detail, while the welding head 43 is intermittently or continuously lowered by the operation mechanism 42, the slide block 41 is moved backward to weld the upper first workpiece W1 to the lower first workpiece W1. As described above, by welding and fixing the first workpiece W1 between the lamination end of the first workpiece W1 and the lamination roller 37 to the lower first workpiece W1, when the rotary lamination table 5 is reversed and driven by the table drive mechanism 30, the tension of the first workpiece W1 acts on the lamination surfaces of both workpieces W1 and W2, and the first workpiece W1 can be reliably prevented from peeling off from the second workpiece W2. When the welding step is completed, the laminating roller 37 is raised, and at the same time, the slide block 41 is moved to the front standby position, and the laminating mechanism 6 is returned to the standby position on the laminating start end side, and the laminating table reversing step is started, and the rotary laminating table 5 is driven to reverse as shown in Figures 9(a) and (b). The above preparation step to the second laminating table reversing step constitute the initial laminating process.

[0031] In the continuous laminating process, the following steps are continuously repeated to form a group of laminated bodies on the pair of laminating surfaces 31 of the rotary laminating table 5: a work transfer step in which the second work W2 on the front stage mounting table 3A and the rear stage mounting table 3B is held by the front and rear transport mechanisms 4A and 4B and transferred to the rear stage mounting table 3B and the laminating surface 31 of the rotary laminating table 5 (see FIG. 9(c)); a laminating step in which the first work W1 is pressed against the second work W2 by the laminating roller 37 to laminate both workpieces W1 and W2; a welding step in which the outer edge of the laminating end of the first work W1 is welded and fixed to the first work W1 below by the welding mechanism 7; and a laminating table inversion step in which the rotary laminating table 5 is rotated counterclockwise by the table drive mechanism 30. In the work transfer process, the position of the placement posture of the second work W2 held by the subsequent transport mechanism 4B is adjusted by a positioning device above the rotary laminating table 5 based on the memorized laminating posture of the second work W2.

[0032] 10(a)-(b) show a state where the first work W1 is bonded to the third second work W2, and FIG. 10(c) shows a state where the outer edge of the bonding end of the first work W1 is welded and fixed to the lower first work W1 by the bonding mechanism 7. When the bonding amount of both work W1 and W2 reaches a predetermined amount by the continuous bonding process, a sheet cutting process is performed to obtain a blank bonded body 50. Specifically, as shown in FIG. 11, in a state where the cutter 47 is lowered by the operating mechanism 46 of the cutting mechanism 45, the slide block 41 is moved backward to cut the outer edge of the welded part by the bonding mechanism 7, and the blank bonded body 50 is separated from the first work W1. The rotary bonding table 5 in this state is separated from the bearing 29, and the blank bonded body 50 is removed from the rotary bonding table 5, whereby the blank bonded body 50 as shown in FIG. 12 is obtained. In order to avoid complicating the drawings, Figs. 12 and 13 show the blank bonded body 50 in a state in which only three layers of the bonded body of the first workpiece W1 and the second workpiece W2 are laminated. However, the number of layers of the bonded body of both workpieces W1 and W2 can exceed several tens of layers, depending on the size of the workpieces.

[0033] In the finishing cutting process, unnecessary portions of the blank laminated body 50 obtained through the sheet cutting process are cut off. In a state where the blank laminated body 50 is removed from the rotary laminating table 5, the upper and lower blank laminated bodies 50 face each other as shown in FIG. 12. By cutting the first work W1 between the welded portion of the blank laminated body 50 in this state and the side edge of the second work W2, two blank laminated bodies 50 are obtained. Finally, by cutting the first work W1 protruding outside the side edge of the second work W2, a laminated body of the first work W1 and the second work W2 having a predetermined outer dimension as shown in FIG. 13 can be obtained. Thereafter, by repeatedly performing the preparation process to the finishing cutting process, the laminated body of the first work W1 and the second work W2 can be efficiently produced. Furthermore, in the work bonding apparatus and work bonding method of this embodiment, a bonded body of the first work W1 and the second work W2 is produced while winding up the first work W1, so that both workpieces W1 and W2 can be laminated even if the first work W1 is made of a material such as wrap film that is difficult to maintain a flat shape in sheet form.

[0034] According to the work bonding device and the work bonding method configured as described above, in the continuous bonding process after the initial bonding process is completed, the transfer of the second work W2 by the rear transport mechanism 4B, bonding of both workpieces W1 and W2 by the bonding roller 37, welding of the bonding end of the first work W1 by the welding mechanism 7, and the reverse drive of the rotary bonding table 5 by the table drive mechanism 30 are performed repeatedly and continuously in the order described above, so that a bonded body of both workpieces W1 and W2 can be formed on each of the bonding surfaces 31 of the rotary bonding table 5. Therefore, unlike the conventional bonding device, it is not necessary to return the rotary bonding table to the initial state for each series of bonding cycles, and therefore the time required for each bonding process of the first workpiece W1 and the second workpiece W2 can be shortened, and the productivity of the bonding process can be further improved.

[0035] In addition, the workpiece mounting table 3 is composed of the front stage mounting table 3A and the rear stage mounting table 3B, and the workpiece transport mechanism 4 is composed of the front stage transport mechanism 4A and the rear stage transport mechanism 4B. Therefore, in the workpiece transport step, the front stage transport mechanism 4A and the rear stage transport mechanism 4B move back and forth to transport the second workpiece W2 from the front stage mounting table 3A to the rear stage mounting table 3B, and at the same time, the second workpiece W2 on the rear stage mounting table 3B can be transported onto the laminating surface 31 of the rotary laminating table 5. Therefore, the time required for the workpiece transport can be minimized, and the time required for each laminating process can be shortened accordingly. In addition, in the case where the upper surface of the second workpiece W2 is covered with a protective paper, the protective paper of the second workpiece W2 transported by the front stage transport mechanism 4A can be peeled off by the peeling device while the second workpiece W2 on the rear stage mounting table 3B is transported to the rotary laminating table 5 by the rear stage transport mechanism 4B, so that the processing time required for the series of laminating processes can be further shortened.

[0036] The laminating mechanism 6 is disposed in a standby position on one side of the rotary laminating table 5, and the welding mechanism 7 is disposed adjacent to the outer side of the mechanism 6. In addition, while the laminating roller 37 holds down and holds the outer edge of the laminating end of the first workpiece W1, the welding mechanism 7 is moved along the central axis of the laminating roller 37 to weld and fix the first workpiece W1 between the laminating end of the first workpiece W1 and the laminating roller 37 to the first workpiece W1 in the lower layer. According to this laminating device, while maintaining the laminating posture of the first workpiece W1 and the second workpiece W2, the first workpiece W1 between the laminating end of the first workpiece W1 and the laminating roller 37 can be precisely welded and fixed to the first workpiece W1 in the lower layer by the welding mechanism 7. Furthermore, by welding and fixing the first work W1 between the lamination end of the first work W1 and the laminating roller 37 to the first work W1 in the lower layer in this way, when the rotary laminating table 5 is driven in reverse by the table driving mechanism 30, the tension of the first work W1 acts on the laminating surfaces of both workpieces W1 and W2, and it is possible to reliably prevent the first work W1 from peeling off from the second work W2. Therefore, the winding up of the first work W1 by the rotary laminating table 5, which is subsequent to laminating the first work W1 to the second work W2, can be performed in a constantly stable state.

[0037] In the above embodiment, the workpiece mounting table 3 is composed of a front stage mounting table 3A and a rear stage mounting table 3B, and the workpiece transport mechanism 4 is composed of a front stage transport mechanism 4A and a rear stage transport mechanism 4B, but this is not necessary, and one workpiece mounting table 3 and one workpiece transport mechanism 4 may be provided between the sheet supply mechanism 2 and the rotary laminating table 5. In this case, the workpiece transport mechanism 4 is provided with a holding roller 21, similar to the rear stage transport mechanism 4B. The rotary laminating table 5 may be structured to have one or more pairs of laminating surfaces 31 having a cross section of a triangle or a square. The sheet supply mechanism 2 can be disposed above the workpiece mounting table 3 or above the rotary laminating table 5. [Explanation of symbols]

[0038] 2 Sheet supply mechanism 3 Workpiece placement table 3A Front stage mounting table 3B Rear stage mounting table 4 Work transport mechanism 4A Front-stage transport mechanism 4B Back-stage transport mechanism 5 Rotating lamination table 6 Lamination mechanism 7 Welding mechanism 30 Drive mechanism 31 Bonding surface 37 Laminating roller W1 First Work W2 2nd Work

Claims

1. A sheet supply mechanism (2) that feeds and supplies a continuous sheet-like first work (W1); a rotary laminating table (5) having a plurality of laminating surfaces (31), which is rotated around a horizontal axis and holds one of the laminating surfaces (31) in a laminating position while winding up the first work (W1); A workpiece placement table (3) is disposed adjacent to the rotary lamination table (5) and on which a flat second workpiece (W2) is placed in a layered manner; a work transport mechanism (4) that adsorbs and holds the second work (W2) on the work placement table (3) and transports it onto the lamination surface (31) that is held in a lamination posture; a lamination mechanism (6) that presses a first work (W1) connected to a rotary lamination table (5) against a second work (W2) with a lamination roller (37) to laminate both workpieces (W1, W2); It is equipped with The rotary laminating table (5) is intermittently rotated by a table driving mechanism (30) to retract the laminate of the first work (W1) and the second work (W2) from the laminating position while winding up the first work (W1), and to hold a new laminating surface (31) in a laminating position; The work bonding device is configured to repeatedly and continuously transfer the second work (W2) onto a new bonding surface (31) by the work transport mechanism (4), bond the first work (W1) and the second work (W2) by the bonding mechanism (6), and rotate the rotary bonding table (5) by the table drive mechanism (30) to form a group of bonded bodies of the first work (W1) and the second work (W2) on the bonding surface (31) of the rotary bonding table (5).

2. The workpiece placement table (3) is composed of a front-stage placement table (3A) and a rear-stage placement table (3B), and the rear-stage placement table (3B) is disposed between the rotary lamination table (5) and the front-stage placement table (3A); The work transport mechanism (4) is composed of a front-stage transport mechanism (4A) that adsorbs and holds the second work (W2) on the front-stage mounting table (3A) and transports it to the rear-stage mounting table (3B), and a rear-stage transport mechanism (4B) that adsorbs and holds the second work (W2) on the rear-stage mounting table (3B) and transports it onto the laminating surface (31) of the rotary laminating table (5), The work bonding device according to claim 1, wherein the front-stage conveying mechanism (4A) and the rear-stage conveying mechanism (4B) move back and forth, the front-stage conveying mechanism (4A) transfers the second work (W2) from the front-stage mounting table (3A) to the rear-stage mounting table (3B), and the rear-stage conveying mechanism (4B) transfers the second work (W2) on the rear-stage mounting table (3B) onto the bonding surface (31) of the rotary bonding table (5).

3. The work joining device according to claim 2, further comprising a welding mechanism (7) for welding and fixing an outer edge portion of a joining end of the first work (W1) joined to the second work (W2) to the first work (W1) in the lower layer.

4. a sheet supply mechanism (2) for unwinding and supplying a continuous sheet-like first work (W1); a rotary laminating table (5) having a plurality of laminating surfaces (31), which is driven to rotate about a horizontal axis and holds one of the laminating surfaces (31) in a laminating position while winding up the first work (W1); a work placement table (3) arranged adjacent to the rotary laminating table (5) and on which a flat plate-like second work (W2) is placed in a layered manner; a work transport mechanism (4) for adsorbing and holding the second work (W2) on the work placement table (3) and transporting it onto the laminating surface (31) held in the laminating position; and a laminating mechanism (6) for pressing the first work (W1) connected to the rotary laminating table (5) against the second work (W2) with a laminating roller (37) to laminate both workpieces (W1, W2), A preparation process of fixing a feed end of a continuous sheet-like first work (W1) fed from a sheet supply mechanism (2) to a clamp (26) of a rotary lamination table (5); A work transfer process in which a second work (W2) on a work placement table (3) arranged adjacent to the rotary lamination table (5) is held by a work transfer mechanism (4) and transferred to a lamination surface (31) of the rotary lamination table (5); a lamination process in which a first work (W1) connected to a rotary lamination table (5) is pressed against a second work (W2) by a lamination roller (37) of a lamination mechanism (6) to laminate both workpieces (W1, W2); a lamination table rotating process in which the rotary lamination table (5) is intermittently rotated and driven to wind up the first work (W1), while retracting the laminate of the first work (W1) and the second work (W2) from the lamination position, and holding a new lamination surface (31) in a lamination posture; This method for laminating works is characterized in that a work transport step, a lamination step, and a lamination table rotation step are repeatedly and continuously performed to form a group of laminated bodies in which a first work (W1) and a second work (W2) are laminated on a lamination surface (31) of a rotary lamination table (5).

5. 5. The work bonding method according to claim 4, further comprising a welding step of welding and fixing the first work (W1) between the lamination end of the first work (W1) and the lamination roller (37) to the underlying first work (W1) while keeping the outer edge of the lamination end of the first work (W1) pressed by the lamination roller (37).

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