Apparatus and method for boring hole in take-up member in shutter device for building

Abstract

To easily drill a bolt hole 14 for bolt-fixing a hanging member 11 and a welding hole part 15 for welding a flange part 13 on the cylinder depth side arranged in support shaft parts 5 and 6 to a body cylinder part 10, in the body cylinder part 10 being a constituting member of a winding body 4 for winding a shutter curtain 3.SOLUTION: The welding hole boring means 20, the burring hole boring means 21 serving as the bolt hole boring means, and the thread groove forming means 22 can be moved left and right and rotated around the axis relative to the main body cylinder portion 10, and boring of the welding hole 15 and the bolt hole 14 is controlled by the welding hole boring means 20, the burring hole boring means 21, and the thread groove forming means 22 relatively moved to the corresponding operation positions.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a hole drilling device and a hole drilling method for a winding body in a shutter device for a building that opens and closes openings in buildings such as buildings, houses, and warehouses. [Background technology]

[0002] Generally, shutter devices for buildings are installed to open and close openings such as entrances and exits of buildings such as buildings, houses, garages, etc., and such shutter devices are configured using various component devices such as guide rails installed on the left and right sides of the opening, a shutter curtain that is guided by the guide rails to open and close the opening, a winding body (winding drum, winding wheel) that is arranged in the space above the opening (ceiling) and on which the shutter curtain is wound, and left and right brackets that are attached to a member on the main body side above the opening and support both left and right end edges of the winding body.In such shutter devices, in order to attach the shutter curtain to the winding body, a hanging member installed at the upper end of the shutter curtain is attached via bolts to the circumferential surface of the cylindrical main body that constitutes the winding body. For this reason, conventionally, there are known products in which a threaded hole is formed in the cylindrical main body portion for threading a bolt (see, for example, Patent Document 1), and products in which a bolt through hole is drilled in the cylindrical main body portion and a nut is welded to the outer surface (see, for example, Patent Document 2). Meanwhile, the winding body is configured such that a support shaft protruding outward in the left-right direction from the left-right edge is attached to the support bracket. In this case, the support shaft is attached to the winding body by a flange portion that fits into the tubular main body portion and is fixed by welding the flange portion fitted into the tubular main body portion. In this case, to firmly secure the support shaft to the tubular main body portion, multiple flange portions are provided, not only on the end side of the tube but also on the inner side of the tube. Of these flange portions, the flange portion on the end side of the tube can be welded to the tubular main body portion from the outer end side, but the flange portion on the inner side of the tube cannot be welded to the tubular main body portion due to the flange portion on the end side getting in the way and being located on the inner side of the tube. For this reason, a welding hole is drilled in the welding portion of the inner flange portion of the main body tubular portion, and the inner flange portion and the main body tubular portion are welded at the drilled welding hole portion.In this case, it is required that the welding hole be drilled not in one place but in multiple places around the axis in the portion of the main body tubular portion corresponding to the inner flange portion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-201869 [Patent Document 2] Japanese Patent Publication No. 2020-20107 Summary of the Invention [Problem to be solved by the invention]

[0004] In this way, the cylindrical main body portion that constitutes the winding section is required to have holes for bolts, welding holes, etc. These holes are drilled in multiple directions, either left and right or around the axis, and therefore the drilling work for the multiple holes needs to be performed while the cylindrical main body portion is positioned left and right and around the axis, but performing the drilling work for these multiple holes after marking (drafting) each time is troublesome, complicated, and poor in workability, and these are the problems that the present invention aims to solve. [Means for solving the problem]

[0005] The present invention has been made in view of the above-mentioned circumstances and with the aim of solving these problems, and the invention of claim 1 is a shutter device for a building comprising guide rails provided on the left and right sides of an opening, a shutter curtain that is guided by the guide rails to open and close the opening, a take-up body that is arranged in the space above the opening and around which the shutter curtain connected via a hanging member is wound, and left and right support brackets that are attached to a body side member and support both left and right end edge portions of the take-up body, wherein the take-up body is configured to comprise a main body tubular portion that is long in the left-right direction and to which the hanging member is attached via a bolt to the outer periphery thereof, a support shaft that protrudes from the left and right end edge portions of the main body tubular portion and is supported by the support brackets, and a flange portion that is provided on the support shaft and welded to the main body tubular portion in a state where it is fitted into the main body tubular portion, and a control means for controlling the left-right movement means for moving the main body tubular portion relative to the hole drilling means in the left-right direction, a rotation means for rotating the main body tubular portion relative to the hole drilling means in the direction around the axis, and a control means for controlling each of these means, wherein the control means executes each of the following controls: movement control for moving the left-right movement means relative to a left-right drilling position corresponding to the hole to be drilled in the main body tubular portion; rotation control for rotating the rotation means relative to a drilling position corresponding to the hole to be drilled in the main body tubular portion in the direction around the axis; and hole drilling control for controlling the hole drilling means to drill a hole in the main body tubular portion that has been moved to the hole drilling position. The invention of claim 2 is provided with the hole drilling means including bolt hole drilling means for drilling bolt holes in the tubular main body portion and welding hole drilling means for drilling welding holes in the tubular main body portion, and the movement control by the left-right direction moving means is left-right movement control for moving the tubular main body portion relatively to the bolt hole drilling means and the welding hole drilling means in the left-right direction to a hole drilling corresponding position in the left-right direction, and the rotation control by the axial direction rotating means is The hole drilling device for a winding body in a shutter device for a building as described in claim 1 is characterized in that the rotation control around the axis is performed by rotating the hole drilling means relative to the bolt hole drilling means in a direction around the axis to rotate it to a hole drilling corresponding position in the direction around the axis, and the hole drilling control by the hole drilling means is characterized in that the bolt hole drilling control drills bolt holes in the main body tubular portion that has moved relative to the bolt hole drilling position, and the welding hole drilling control drills welding holes in the main body tubular portion that has moved relative to the welding hole drilling position. The invention of claim 3 is a hole drilling device for a winding body in a building shutter device described in claim 2, characterized in that the bolt holes are provided in multiple positions at the same position around the axis relative to the main body cylindrical portion, with gaps in the left-right direction, and the control means controls movement in the left-right direction to each bolt hole drilling position, while omitting rotation control around the axis. The invention of claim 4 is a hole drilling device for a winding body in a building shutter device described in claim 2, characterized in that a plurality of bolt holes are provided at the same position around the axis and at different positions around the main body tube portion, spaced apart in the left-right direction, and the control means controls movement in the left-right direction and rotation around the axis to each bolt hole drilling position. The invention of claim 5 is a hole drilling device for a winding body in a shutter device for a building described in claim 2, characterized in that the welding holes are provided at the same left-right position on the main body cylindrical portion and at intervals around the axis, and the control means moves the main body cylindrical portion, which has been moved to a position corresponding to the drilling of the welding holes by movement control, to each corresponding welding hole drilling position by rotation control. The invention of claim 6 is a hole drilling device for a winding body in a shutter device for a building described in claim 2, characterized in that the drilling of welding holes and bolt holes is performed sequentially from one end side to the other end side in the left-right direction. The invention of claim 7 is a hole drilling device for a take-up body in a shutter device for a building described in any one of claims 2 to 4, characterized in that the bolt holes are burring holes with thread grooves formed in them, the bolt hole drilling means is composed of burring hole drilling means for drilling burring holes in the main body cylindrical portion and thread groove forming means for forming thread grooves for the bolt in the drilled burring holes, and the control means controls the thread groove forming means to form thread grooves in the burring holes drilled by the burring hole drilling means. The invention of claim 8 is a hole drilling device for a take-up body in a shutter device for a building described in any one of claims 2 to 4, characterized in that the bolt hole is a through hole with a thread groove formed in it, the bolt hole drilling means is composed of a through hole drilling means for drilling a through hole in the main body cylindrical portion and a thread groove forming means for forming a thread groove for the bolt in the drilled through hole, and the control means controls the thread groove forming means to form a thread groove in the through hole drilled by the through hole drilling means. The invention of claim 9 is a system for a shutter curtain that is guided by the guide rails provided on the left and right sides of an opening and that opens and closes the opening, a winding body that is arranged in the space above the opening and around which the shutter curtain connected via a hanging member is wound, and left and right support brackets that are attached to a body side member and support both left and right end edges of the winding body, the winding body being formed by a cylindrical main body part that is long in the left-right direction and to which the hanging member is attached via a bolt on the outer periphery, and support brackets that protrude from the left and right end edges of the cylindrical main body part and are supported by the support brackets. In a shutter device for a building comprising a support shaft and a flange portion provided on the support shaft and welded to the cylindrical main body portion in a state of being fitted into the cylindrical main body portion, the device comprises a hole processing device for drilling bolt holes in the cylindrical main body portion for bolting a hanging member and drilling welding holes in the cylindrical main body portion for welding the flange portion to the cylindrical main body portion, the device comprises a bolt hole drilling means for drilling bolt holes in the cylindrical main body portion, and a welding hole drilling means for drilling welding holes in the cylindrical main body portion, and a device for rotating the cylindrical main body portion in a left-right direction relative to the bolt hole drilling means and the welding hole drilling means. The control step by the control means includes a movement control step of moving the left-right movement means so as to move the left-right movement means relative to the bolt hole drilling means or the welding hole drilling means of the cylindrical main body portion in a direction about the axis corresponding to the left-right drilling of the bolt holes or the welding holes in the left-right direction by the bolt hole drilling means or the welding hole drilling means of the cylindrical main body portion, and a movement control step of moving the left-right movement means relative to the bolt hole drilling means or the welding hole drilling means of the cylindrical main body portion in a direction about the axis corresponding to the left-right drilling of the bolt holes or the welding holes in the left-right direction by the bolt hole drilling means or the welding hole drilling means of the cylindrical main body portion. a bolt hole drilling control step of controlling the bolt hole drilling means to rotate relative to a position corresponding to the drilling of a bolt hole in an axial direction or a welding hole in an axial direction by the bolt hole drilling means; a bolt hole drilling control step of controlling the bolt hole drilling means to drill a bolt hole in the main body tubular portion that has moved relatively to the bolt hole drilling position; and a welding hole drilling control step of controlling the welding hole drilling means to drill a welding hole in the main body tubular portion that has moved relatively to the welding hole drilling position. The invention of claim 10 is a method for drilling holes in a take-up body in a shutter device for a building described in claim 9, characterized in that the bolt hole drilling means is configured to include a burring hole drilling means or a through hole drilling means that drills a burring hole or a through hole in the cylindrical main body portion, and a thread groove forming means that forms a thread groove for a bolt in the drilled burring hole or through hole, and the process of controlling bolt hole drilling by the bolt hole drilling means executes each of the steps of drilling a burring hole or a through hole in the cylindrical main body portion that has been moved relative to the bolt hole drilling position, and forming a thread groove for a bolt in the drilled burring hole or through hole. [Effects of the Invention]

[0006] By adopting the invention of claim 1, when drilling holes using a hole drilling device equipped with hole drilling means that drills at least one of the bolt holes for bolting the hanging member for attaching the shutter curtain to the main body cylindrical portion, which is a constituent member of the winding body that winds up the shutter curtain, and the welding holes for welding the flange portion provided on the support shaft supported by the left and right support brackets attached to the main body side to the main body cylindrical portion, the hole drilling device is equipped with left and right direction movement means that moves the main body cylindrical portion left and right relative to the hole drilling means, and axial direction rotation means that rotates the main body cylindrical portion relative to the hole drilling means in the axial direction, and the control means that controls each of these means executes left and right direction and axial direction relative movement control for the left and right direction movement means and axial direction rotation means so that the hole drilling means is located at the drilling position on the main body cylindrical portion, and controls the hole drilling means that has moved to the drilling position, resulting in easier hole drilling work in the cylindrical main body portion and improved workability. According to the invention of claim 2 or 9, the hole drilling means includes a bolt hole drilling means for drilling bolt holes in the tubular main body portion, and a welding hole drilling means for drilling welding holes in the tubular main body portion, and the tubular main body portion is moved in the left-right direction relative to the bolt hole drilling means and the welding hole drilling means by movement control using the left-right direction moving means to a left-right position where the tubular main body portion moves to a left-right hole drilling position, and the axial rotation means controls rotation of the tubular main body portion. The bolt hole drilling means and the welding hole drilling means are rotated relative to each other in the axial direction to a hole drilling corresponding position in the axial direction, and the hole drilling control by the hole drilling means becomes bolt hole drilling control for drilling bolt holes in the main body tubular portion that has moved to the bolt hole drilling position, and welding hole drilling control for drilling welding holes in the main body tubular portion that has moved relative to the welding hole drilling position, making it possible to drill bolt holes and welding holes easily and reliably. By adopting the invention of claim 3, when a plurality of bolt holes are provided at the same position around the axis relative to the main body cylindrical portion and spaced apart in the left-right direction, the control means can execute left-right movement control to each bolt hole drilling position, and can execute control in which rotation control around the axis is omitted, thereby further simplifying the bolt hole drilling work. By adopting the invention of claim 4, when a plurality of bolt holes are provided at the same position around the axis and at different positions around the axis on the main body cylindrical portion with spacing in the left-right direction, the control means can control movement in the left-right and axial directions to each bolt hole drilling position, thereby further simplifying the bolt hole drilling work. By adopting the invention of claim 5, when a plurality of welding holes are provided at the same left-right position relative to the main body cylindrical portion and spaced apart in the axial direction, the control means can simply control the movement of the main body cylindrical portion, which has been moved to a position corresponding to the drilling of the welding holes, and then rotate it to each corresponding welding hole drilling position by rotation control, thereby further simplifying the work of drilling the welding holes. By adopting the invention of claim 6, the drilling of the welding holes and bolt holes is carried out sequentially from one end to the other in the left-right direction, making it possible to drill holes more efficiently. According to the invention of claim 7, the bolt hole drilling means is configured to include burring hole drilling means for drilling burring holes in the cylindrical main body portion, and thread groove forming means for forming thread grooves for bolts in the drilled burring holes, and the control means controls the thread groove forming means to form thread grooves in the burring holes drilled by the burring hole drilling means, so that the burring holes and thread grooves can be formed in a continuous process, improving workability. By adopting the inventions of claims 8 and 10, the bolt hole drilling means is configured to include through hole drilling means for drilling a through hole in the main body cylindrical portion, and thread groove forming means for forming a thread groove for a bolt in the drilled through hole, and the control means controls the thread groove forming means to form a thread groove in the through hole drilled by the through hole drilling means, so that the formation of the through hole and the thread groove can be performed in a continuous process, thereby improving workability. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. [Figure 2] FIG. [Figure 3] FIG. 10 is a side view of the drive side portion of the winding body. [Figure 4] (A), (B), and (C) are a front view, a cross-sectional front view, and a perspective view of the winding body. [Figure 5] 1A, 1B, and 1C are cross-sectional side views of the bolt hole portion of the winding body, a cross-sectional side view of the bolt hole, and a cross-sectional side view of the welding hole portion. [Figure 6] 1A and 1B are a schematic front view and a schematic side view of the hole drilling device. [Figure 7] FIG. 2 is a block circuit diagram of a control mechanism. [Figure 8]10(A) to 10(C) are explanatory views showing the first half of the procedure for drilling a driven-side welding hole. [Figure 9] 10(A) to 10(E) are explanatory views showing the latter half of the procedure for drilling holes for welding on the driven side. [Figure 10] 10(A) to 10(D) are explanatory views showing the procedure for drilling holes for driven-side bolts. [Figure 11] 5(A) to 5(C) are explanatory views showing the procedure for drilling a drive-side bolt hole. [Figure 12] 10(A) to 10(C) are explanatory views showing the procedure for drilling a drive-side welding hole. [Figure 13] FIG. 10 is a cross-sectional front view of a winding body according to a modified example of the first embodiment. [Figure 14] 10A and 10B are a front view and a cross-sectional front view of a winding body according to a second embodiment. [Figure 15] FIG. 10 is a plan view of a winding body portion of the third embodiment. [Figure 16] 1A, 1B, and 1C are a front view, a longitudinal sectional view, and a side view of the driving side of the cylindrical main body of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a shutter device for a building that is erected at an opening such as a building entrance / exit, and the shutter device 1 is configured using various components and devices, such as guide rails 2 provided on both the left and right sides of the opening E, a shutter curtain 3 that is guided up and down by the guide rails 2 to open and close the opening E, a winding body 4 that is arranged on a ceiling H above the opening E and winds up the shutter curtain 3 in a spiral shape, drive-side and driven-side (left and right) support brackets 7 and 8 that are attached to a frame member G such as a wall and that support drive-side (left and right) and driven-side support shafts 5 and 6 that protrude from both left and right end edges of the winding body 4, and an electric switch (switching mechanism) 9 that drives the winding body 4 to open and close, and the switch 9 and the drive-side support shaft 5 are interlocked via a chain transmission mechanism 9a, all of which are conventional.

[0009] The winding body 4 is configured with a main body tube portion 10 having a cylindrical shape that is long in the left-right direction, and left and right hanging members 11 attached to the upper edge of the shutter curtain 3 are attached to the outer peripheral surface of the main body tube portion 10 via bolts 11a. In addition, the left and right support shaft portions 5, 6 are provided with a pair of left and right flange portions 12, 13 on the tube end side and the tube inner side, respectively, via welding M, which are fixed to the main body tube portion 10 by welding when fitted into the tube of the main body tube portion 10. The main body tube portion 10 configured in this manner is configured to have left and right bolt holes 14 (14X, 14Y) on the driven side and drive side into which the bolts 11a for attaching the hanging member 11 are threaded, and left and right welding holes 15 (15X, 15Y) on the driven side and drive side for welding the inner tube flange portions 13 provided on the left and right support shaft portions 5, 6, respectively, to the main body tube portion 10.The drilling of these bolt holes 14 and welding holes 15 will be explained below. Incidentally, due to the thickness of the main body tubular portion 10, the bolt holes 14 are formed by first drilling burring holes 14a so that the tubular material protrudes into the tubular main body portion 10, and then thread grooves 14b are formed on the inner surface of the burring holes 14a by tapping. However, if the main body tubular portion 10 is thick, it is of course also possible to drill through holes 14c for the bolts instead of burring holes 14a, and then form the thread grooves 14b by tapping, as will be described later. Furthermore, it is sufficient for the welding holes 15 to be drilled for welding the inner flange portion 13 to the main body tubular portion 10 (Ma). As for welding the end flange portion 12 to the main body tubular portion 10 (Mb), welding work can be performed from the outside of the end of the main body tubular portion 10, so there is no need to drill welding holes 15 as when welding the inner flange 13, but of course it is possible to configure the structure with welding holes 15 in some cases.

[0010] In this way, left and right bolt holes 14 and welding holes 15, which are the driven side and the driving side, respectively, are drilled in the main body cylindrical portion 10. Of these, the left and right bolt holes 14 are fixed (fastened) to the main body cylindrical portion 10 via bolts 11a at the same position around the axis relative to the left and right hanging members 11, and therefore are arranged with gaps on the left and right sides on a single imaginary reference line Z facing left and right and set at the top of the outer surface of the main body cylindrical portion 10. In contrast, the welding holes 15 are arranged so as to be located closer to the left-right tube end than the bolt holes 14, but due to the welding strength, welding is required at multiple locations around the axis rather than just one.For this reason, in this embodiment, the multiple welding holes 15 are set so that they are provided in four locations (appropriate locations) at an angle of 90 degrees (appropriate angle) along the outer peripheral lines Zx and Zy of the driven and driving sides in the axial direction, with one welding hole 15 located on the reference line Z.

[0011] In the main body tube portion 10 configured in this manner, driven side welding holes 15X, driven side bolt holes 14X, driving side bolt holes 14Y, and driving side welding holes 15Y are drilled in sequence from the driven side tube end portion 10a to the driving side tube end portion 10b, and the hole drilling device K used to drill these holes 15, 14 is configured as follows.

[0012] The hole drilling device K is configured to include a mounting table 16 on which the main body tubular portion 10 is positioned while lying on its side in the left-right direction, a movable table 17 arranged above the mounting table 16 and constituting a left-right movement means for moving left and right relative to the main body tubular portion 10 placed on the mounting table 16, and a rotating roller 18 constituting an axial rotation means for rotating the main body tubular portion 10 placed on the mounting table 16 in an axial direction.The movable table 17 and the rotating roller 18 are configured to perform left-right movement control and axial rotation control under the control of a control means 19 described later, and are configured using commonly known movement control means and rotation control means, so details thereof will be omitted. Incidentally, the hole drilling device K of this embodiment is configured to perform relative left-right movement of the main body tubular portion 10 and relative rotation around the axis by moving the movable table 17 left and right relative to the main body tubular portion 10 and rotating the main body tubular portion 10 using the rotating rollers 18. However, it is of course also possible to configure the main body tubular portion 10 to perform relative left-right movement and relative rotation around the axis by, for example, using a fixed table in which the movable table 17 does not move left and right, and holding both left and right end edges of the main body tubular portion 10 with a holding means such as a chuck, and controlling the holding means to move left and right and rotate around the axis.

[0013] The movable table 17 is equipped with a drill-type welding hole drilling means 20 for drilling welding holes 15 in the main body cylindrical portion 10, a burring hole drilling means 21 for drilling burring holes 14a for drilling bolt holes 14, and a thread groove forming means 22 for forming (tapping) thread grooves (bolt grooves) 14b in the drilled burring holes 14a, and these welding hole drilling means 20, burring hole drilling means 21 and thread groove forming means 22 are arranged in a row in the left-right direction on the movable table 17. The welding hole drilling means 20, the burring hole drilling means 21, and the thread groove forming means 22 are configured to move left and right relative to the main body cylindrical portion 10 placed on the loading table 16 by controlling the movement of the movable table 17 in the left and right directions, and to rotate relative to the main body cylindrical portion 10 placed on the loading table 16 in the direction around the axis by controlling the rotation of the rotating roller 18 in the direction around the axis. Incidentally, in the above embodiment, the relative movement is performed by moving the movable table 17, and the relative rotation is performed by moving the rotating roller 18, but the present invention can also be implemented by configuring the movable table 17 as the fixed side and the main body cylindrical portion 10 to move left and right for the relative movement, and it goes without saying that the present invention can also be implemented by configuring the movable table 17 side to rotate in an axial direction relative to the main body cylindrical portion 10 for the relative rotation.

[0014] Next, the procedure for drilling control by the control means 19 will be described with reference to Figures 8 to 12. For convenience, the drilling procedure in this embodiment will be described assuming that hole drilling control is performed in the order from the driven side to the drive side of the main body cylindrical portion 10, but this procedure can be set arbitrarily as needed, and the description of this embodiment should not be construed as limiting.

[0015] First, the control means 19 identifies the top of the outer peripheral surface of the tubular main body portion 10 placed on the mounting table 16 as a virtual reference line Z in the left-right direction, and the edge of the driven side tube on the reference line Z as a starting position Za (for example, by detecting the top of the tubular main body portion 10 with a laser detector 17a provided on the movable table 17). Then, as shown in Fig. 8, the control means 19 controls the left-right movement of the movable table 17 using the identified reference line Z as a reference so that the welding hole drilling means 20 is positioned at the position of the driven side welding hole 15X. Then, as the welding hole drilling means 20 moves to the driven side welding hole drilling position, the control means 19 controls the welding hole drilling means 20 to drill the driven side welding hole 15X. Incidentally, the driven side welding hole 15X drilled here is drilled on the reference line Z. After the first driven side welding hole 15X has been drilled in this manner, as shown in Figure 9, the control means 19 repeats three times the rotation control of the rotating roller 18 around the axis by 90 degrees and the drilling control of the welding hole drilling means 20 for the driven side welding hole 15X, thereby drilling four driven side welding holes 15X around the axis.

[0016] After the required number of driven-side welding holes 15X have been drilled in this manner, control means 19 performs rotation control so that welding hole drilling means 20 returns to the position on reference line Z. Thereafter, as shown in Fig. 10, control means 19 performs left and right movement control of movable table 17 so that burring hole drilling means 21 is positioned at the position of driven-side bolt hole 14X, and after burring hole drilling means 21 is positioned at the position of driven-side bolt hole 14X, control means 19 performs drilling control of burring hole drilling means 21 to drill burring holes 14a. Thereafter, left and right movement control is executed on the movable table 17 so that the thread groove forming means 22 moves to the position of the drilled burring hole 14a, and with the thread groove forming means 22 moved to the position of the burring hole 14a, control is executed to form the thread groove 14b in the burring hole 14a by the thread groove forming means 22, thereby forming the driven-side bolt hole 14X.

[0017] Next, as shown in Figure 11, the control means 19 controls the movement of the movable table 17 to move the burring hole drilling means 21 to the position of the drive-side bolt hole 14Y, drills the burring hole 14a by the burring hole drilling means 21, moves the thread groove forming means 22 to the position of the burring hole 14a by the movable table 17, and then controls the thread groove formation by the moved thread groove forming means 22, thereby forming the drive-side bolt hole 14Y. Thereafter, the control means 19 executes drilling control of the drive side welding holes 15Y, as shown in Figure 12. This drilling control is carried out by controlling the movement of the movable table 17 to position the welding hole drilling means 20 at the drive side bolt hole 15Y position. After the welding hole drilling means 20 executes drilling control of the drive side welding holes 15Y, the rotation control of the main body cylindrical portion 10 by the rotating roller 18 and the drilling control of the welding holes by the welding hole drilling means 20 are repeated to drill the required number of drive side welding holes 15Y, and in this way the drilling of bolt holes 14 and welding holes 15 in the main body cylindrical portion 10 is executed.

[0018] That is, as a drilling control process for drilling the welding holes 15 and the bolt holes 14 by the control means 19, a step of controlling the movement of the movable table 17 to move the burring hole drilling means 21, the thread groove forming means 22, and the welding hole drilling means 20, which constitute the bolt hole drilling means, to positions corresponding to the left and right drilling of the bolt holes 14 or the welding holes 15; a step of rotating the rotary roller 18 to rotate the burring hole drilling means 21, the thread groove forming means 22, and the welding hole drilling means 20 to positions corresponding to drilling the bolt holes 15 or the welding holes 14 in the axial direction; a step of controlling the drilling of the bolt hole 14 by controlling the burring hole drilling means 21 and the thread groove forming means 22 that have moved to the drilling position of the bolt hole 14 to drill the burring hole 14a and form the thread groove 14b; a step of controlling the drilling of the welding holes 15 by controlling the welding hole drilling means 20 that has moved to the drilling position of the welding holes 15 to drill the welding holes 15; will be executed.

[0019] In the present embodiment configured as described above, in order to drill both the bolt holes 14 for bolting the hanging member 11 for attaching the shutter curtain 3 to the cylindrical main body portion 10, which is a component of the winding body 4 for winding up the shutter curtain 3, and the welding holes 15 for welding the flange portions 13 on the inner side of the cylinder provided on the support shafts 7 and 8 to the cylindrical main body portion 10, the cylindrical main body portion 10 is placed on the placement table 16, and a welding hole drilling means 20 for drilling the welding holes 15 and a bolt hole drilling means 30 for drilling the bolt holes 14 are provided. The boring hole drilling means 21 and the thread groove forming means 22 for drilling are mounted on a movable table 17 that moves left and right, thereby controlling the relative movement left and right with respect to the main body cylindrical portion 10, and further, the relative rotation around the axis is controlled by a rotating roller 18 that rotates the main body cylindrical portion 10 placed on the mounting table 16 around the axis.As a result, the drilling work of the welding holes 15 and the bolt holes 14 in the main body cylindrical portion 10 can be easily performed by control by the control means 19, improving workability.

[0020] Moreover, in this case, multiple bolt holes 14 are provided at intervals on the left and right sides and positioned on reference line Z relative to the main body cylindrical portion 10, but the control of drilling of bolt holes 14 by control means 19 is such that the burring hole drilling means 21 and thread groove forming means 22, which serve as the bolt hole drilling means, are positioned on reference line Z and are arranged side by side on the left and right.As a result, the movement of burring hole drilling means 21 and thread groove forming means 22 to their respective bolt hole drilling positions only requires control of movement in the left and right direction, with no control of rotation around the axis, which further simplifies the drilling operation of bolt holes 14.

[0021] In addition, multiple welding holes 15 are provided at the same left-right position on the main body cylindrical portion 10 and spaced apart around the axis. In this case, the control means 19 controls the left-right movement of the movable table 17 to move the welding hole drilling means 20 relative to a position corresponding to the drilling of the welding hole 15, and then repeats the drilling control by the welding hole drilling means 20 on the main body cylindrical portion 10 and the rotation control of the main body cylindrical portion 10 around the axis by the rotating roller 18 as many times as the number of welding holes 15 to be drilled, thereby drilling multiple welding holes 15 around the axis, and as a result, the drilling work of the welding holes 15 is further simplified.

[0022] In this case, the welding holes 15 and bolt holes 14 drilled in the main body tubular portion 10 are drilled in the following order from the driven side tubular end portion 10a of the main body tubular portion 10: driven side welding hole 15X, driven side bolt hole 14X, drive side bolt hole 14Y, and drive side welding hole 15Y, thereby allowing for efficient hole drilling work. In the hole drilling process configured as described above, when drilling bolt holes 14, burring holes 14a are drilled in the main body cylindrical portion 10 by burring hole drilling means 21, and then thread grooves 14b for bolts 11a are formed in the drilled burring holes 14a by thread groove forming means 22, so that the formation of burring holes 14a and thread grooves 14b can be performed in a continuous process, thereby improving workability.

[0023] Of course, the present invention is not limited to the above-described embodiment, and when the main body cylindrical portion 10 is thick enough to maintain sufficient strength when the bolt is fastened, there is no need to drill burring holes 14a as in the above-described embodiment when drilling bolt holes 14. Of course, it is also possible to simply drill through holes 14c and form thread grooves 14b in the through holes 14c, as in the modified example shown in Figure 13.

[0024] In addition, the main body cylindrical portion 10 may have three or more hanging members 11 attached in the left-right direction to attach the shutter curtain 3 to the main body cylindrical portion 10 depending on various conditions such as the opening width and height of the opening, and the slat thickness of the shutter curtain 3, and may also have multiple bolt holes 14 provided in the axial direction, or the bolt holes 14 provided in a position shifted in the axial direction.In such cases, the required bolt holes 14 can be drilled by appropriately combining left-right movement control and axial rotation control.

[0025] On the other hand, similarly, the flange portion 13 at the inner end of the tube may be provided with not just one but two or more welding holes 15, and even in such cases, the required welding holes 15 can be drilled by appropriately combining left-right movement control and rotation control around the axis. This example will be described using the second embodiment shown in Fig. 14. In this example, a total of four bolt holes 14 are drilled in the left-right direction in the main body cylindrical portion 10, and a plurality of welding holes 15 for welding the two cylinder inner flange portions 5a, 6a provided on each of the left and right support shaft portions 5, 6 to the main body cylindrical portion 10 are drilled in the axial direction, with a plurality of holes formed corresponding to each of the cylinder inner flange portions 5a, 6a. Even in this example, a simple drilling operation can be performed by control by the control means 19.

[0026] Furthermore, as shown in Figures 15 and 16, a third embodiment is available in which a bearing member 9c, which is interlocked with a driven sprocket 9b that constitutes a chain transmission mechanism 9a on the drive side of the tubular main body 10, passes through a through hole 10d formed in a tubular end flange 10c welded to the drive side tubular end of the tubular main body 10. A fixing nut 10e is welded to the periphery of the through hole 10d, and the bearing member 9c is fastened to the tubular main body 10 using a bolt 10g inserted through a through hole 10f provided in the tubular main body 10. This integrates the bearing member 9c with the tubular main body 10. In this case, the through hole 10f formed in the tubular main body 10 can also be formed during the same series of hole drilling control processes as described above. In this case, if the diameter of the through hole 10f is the same as the diameter of the welding hole 15, it can be drilled using the welding hole drilling means 20, but if the diameters are different, the drilling of the through hole 10f can be controlled by, for example, providing a dedicated through hole drilling means separately. [Industrial Applicability]

[0027] The present invention can be used as a hole drilling device and a hole drilling method for a winding body in a shutter device for a building that opens and closes an opening in a building such as a building, a house, or a warehouse. [Explanation of symbols]

[0028] 1. Shutter device 2 guide rails 3. Shutter Curtain 4 Winding body 5 Drive side support shaft 6 Driven side support shaft 7 Driven side support bracket 8 Drive side support bracket 10. Main body cylinder 10a Driven side cylinder end 10b Drive side cylinder end 11 Hanging member 11a Bolt 13 Flange at the back of the cylinder 14 Bolt holes 14a Burring hole 14b screw groove 14X Driven side bolt hole 14Y Drive side bolt hole 15 Welding hole 15X Driven side welding hole 15Y Drive side welding hole 16 Loading table 17 Movable Table 18 Rotating roller 19 Control Means 20 Welding hole drilling means 21 Burring hole drilling means 22 Thread groove forming means E Opening Z reference line Ma Welded part between the main body cylinder and flange

Claims

1. A shutter device for a building comprises guide rails provided on the left and right sides of an opening, a shutter curtain that is guided by the guide rails to open and close the opening, a winding body that is arranged in the space above the opening and on which the shutter curtain connected via a hanging member is wound, and left and right support brackets that are attached to a body side member and support both left and right end edges of the winding body. The winding body is configured to include a cylindrical main body portion having a long cylindrical shape in the left-right direction, and a suspension member attached to the outer peripheral surface via a bolt, a support shaft protruding from the left-right end edge of the main body portion and supported by a support bracket, and a flange portion provided on the support shaft and welded to the main body portion in a state where it is fitted into the main body portion, In constructing a hole drilling device for a winding body provided with hole drilling means for drilling at least one of a bolt hole for bolting the suspension element to the cylindrical main body portion and a welding hole for welding the flange portion to the cylindrical main body portion, the hole drilling device further comprises: a left-right movement means for moving the main body tubular portion in the left-right direction relative to the hole drilling means; Axis-rotating means for rotating the main body tubular portion relative to the hole-punching means in the axial direction; A control means for controlling each of these means is provided, The control means a movement control for moving the left-right direction moving means so as to move the means relative to a position corresponding to a hole to be drilled in the left-right direction of the main body cylindrical portion; a rotation control for rotating the rotation means in the axial direction so as to rotate relative to a position corresponding to the hole to be drilled in the tubular main body portion in the axial direction; a hole drilling control for controlling the hole drilling means to drill a hole in the main body tubular portion that has been moved to the hole drilling position; A hole drilling device for a winding body in a shutter device for a building, characterized by executing each of the above controls.

2. The hole drilling means includes a bolt hole drilling means for drilling a bolt hole in the tubular main body portion, and a welding hole drilling means for drilling a welding hole in the tubular main body portion, The movement control by the left-right direction moving means is a left-right movement control in which the main body cylindrical portion is moved in the left-right direction relative to the bolt hole drilling means and the welding hole drilling means to move the main body cylindrical portion to a hole drilling corresponding position in the left-right direction, the rotation control by the axial rotation means is a rotation control in the axial direction in which the main body cylindrical portion is rotated relative to the bolt hole drilling means and the welding hole drilling means in the axial direction to rotate it to a hole drilling corresponding position in the axial direction; A hole drilling device for a winding body in a shutter device for a building as described in claim 1, characterized in that the hole drilling control by the hole drilling means includes bolt hole drilling control for drilling bolt holes in the main body cylindrical portion that has moved relatively to the bolt hole drilling position, and welding hole drilling control for drilling welding holes in the main body cylindrical portion that has moved relatively to the welding hole drilling position.

3. The bolt holes are provided in a plurality of positions at the same position around the axis of the main body cylindrical portion, spaced apart in the left-right direction, A hole drilling device for a winding body in a building shutter device as described in claim 2, characterized in that the control means performs left-right movement control to each bolt hole drilling position, and omits rotation control around the axis.

4. The bolt holes are provided in a plurality of positions at the same position around the axis and at different positions at intervals in the left-right direction with respect to the main body cylindrical portion, A hole drilling device for a winding body in a building shutter device as described in claim 2, characterized in that the control means controls movement in the left and right directions and rotation around the axis to each bolt hole drilling position.

5. The welding holes are provided at the same positions in the left-right direction on the main body cylindrical portion and spaced apart in the axial direction, A hole drilling device for a winding body in a building shutter device as described in claim 2, characterized in that the control means rotates the main body cylindrical portion, which has been moved to a position corresponding to the drilling of welding holes by movement control, to each corresponding welding hole drilling position by rotation control.

6. 3. The hole drilling device for a winding body in a shutter device for a building according to claim 2, wherein the holes for welding and the holes for bolts are drilled sequentially from one end side to the other end side in the left-right direction.

7. The bolt holes are burred holes with thread grooves formed therein, the bolt hole drilling means is configured to include burring hole drilling means for drilling burring holes in the main body cylindrical portion, and thread groove forming means for forming thread grooves for bolts in the drilled burring holes; A hole drilling device for a winding body in a building shutter device described in any one of claims 2 to 4, characterized in that the control means controls the thread groove forming means to form a thread groove in the burring hole drilled by the burring hole drilling means.

8. The bolt hole is a through hole with a screw groove formed therein, the bolt hole drilling means is configured to include a through hole drilling means for drilling a through hole in the main body tubular portion, and a thread groove forming means for forming a thread groove for a bolt in the drilled through hole; A hole drilling device for a winding body in a shutter device for a building as described in any one of claims 2 to 4, characterized in that the control means controls the thread groove forming means to form a thread groove in the through hole drilled by the through hole drilling means.

9. The shutter curtain is guided by the guide rails on the left and right sides of the opening, and opens and closes the opening. The shutter curtain is arranged in the space above the opening and connected to the hanging member. The shutter curtain is wound around a winding body. The winding body is attached to a body side member and supports both the left and right end edges of the winding body. In a shutter device for a building, the winding body is configured to have a cylindrical shape that is long in the left-right direction, and a main body tube portion to which a hanging member is attached via a bolt on the outer peripheral surface, a support shaft that protrudes from the left-right end edge portion of the main body tube portion and is supported by a support bracket, and a flange portion that is provided on the support shaft and welded to the main body tube portion in a state where it fits into the main body tube portion, a hole processing device for drilling bolt holes in the main body tubular portion for bolting the suspension member and drilling welding holes in the main body tubular portion for welding the flange portion to the main body tubular portion; a bolt hole drilling means for drilling a bolt hole in the cylindrical main body portion; a welding hole drilling means for drilling a welding hole in the cylindrical main body portion; a left-right movement means for moving the main body tubular portion in the left-right direction relative to the bolt hole drilling means and the welding hole drilling means; Axis-rotating means for rotating the main body tubular portion relative to the bolt hole drilling means and the welding hole drilling means in a direction about the axis; and a control means for controlling each of these means. As a control step by the control means, a movement control step of moving the left-right moving means so as to move the means for moving ... a rotation control step of rotating the axial rotation means so as to rotate the axial rotation means relative to a position corresponding to drilling of a bolt hole or a welding hole in the axial direction by the bolt hole drilling means or the welding hole drilling means of the main body cylindrical portion; a bolt hole drilling control step of controlling the bolt hole drilling means to drill bolt holes in the main body tubular portion that has moved relatively to the bolt hole drilling position; a welding hole drilling control step of controlling the welding hole drilling means to drill welding holes in the main body tubular portion that has been moved relatively to the welding hole drilling position; A method for drilling holes in a roll-up body of a shutter device for a building, characterized in that each of the steps above is carried out.

10. the bolt hole drilling means is configured to include burring hole drilling means or through hole drilling means for drilling burring holes or through holes in the main body cylindrical portion, and thread groove forming means for forming a thread groove for a bolt in the drilled burring hole or through hole, The process of controlling the drilling of bolt holes by the bolt hole drilling means includes: a step of drilling burring holes or through holes in the main body cylindrical portion that has been moved relatively to a bolt hole drilling position; forming a thread groove for a bolt in the drilled burring hole or through hole; The method for drilling holes in a winding body of a shutter device for a building according to claim 9, characterized in that the steps of: a.

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