JP2007077594A - Anchor fitting embedded lightweight cellular concrete panel, its manufacturing method and its manufacturing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To excels in anchor fitting mounting work efficiency and mounting strength to a reinforcing bar embedded in a lightweight cellular concrete panel. <P>SOLUTION: This anchor fitting embedded lightweight cellular concrete panel 10 is provided with a pair of spaced locking parts 18a, 18a at the end of an anchor fitting 18, wherein openings facing opposite to each other are formed at the respective sidewalls of the pair of locking parts 18a, 18a, and the locking part 18a of the anchor fitting 18 and one reinforcing bar (a horizontal reinforcement) 16b fitted from the opening of the locking part 18a are fixed by spot welding. In a manufacturing method, one reinforcing bar (the horizontal reinforcement) 16b is disposed between the pair of locking parts 18a, 18a, and the anchor fitting 18 is rotated to fit the one reinforcing bar (the horizontal reinforcement) 16b into the opening. The anchor fitting 18 is then fixed to the one reinforcing bar (the horizontal reinforcement) 16b by spot welding. A manufacturing device is for use in the manufacturing method. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to an anchor bracket embedded lightweight cellular concrete panel, a method for manufacturing the same, and an apparatus for manufacturing the same, and more specifically, anchor bracket embedded lightweight foam used suitably for a structural member such as an outer wall, a roof, a floor, etc. The present invention relates to a concrete panel, a manufacturing method thereof, and a manufacturing apparatus thereof.

  Lightweight cellular concrete panels used as structural members such as outer walls, roofs, floors, etc. of buildings and ordinary houses are generally reinforcing bars for increasing the panel strength and anchors used when attaching the panels to the building frame. Metal fittings are buried.

  The anchor fitting is mainly attached to the reinforcing bar when embedded in the panel. In this case, usually, it is often attached to two reinforcing bars in consideration of the pulling strength, but there is also one attached to one reinforcing bar.

  For example, Patent Literature 1 discloses a lightweight cellular concrete panel embedded with an anchor fitting in which the anchor fitting is attached to one reinforcing bar. FIG. 10 shows the structure. A locking portion 44 is provided at the end of the anchor fitting 42, and a U-shaped groove is provided below the locking portion 44.

  Then, by inserting a reinforcing bar 48 embedded in the lightweight cellular concrete panel 40 into the U-shaped groove, the anchor fitting 42 is locked to the reinforcing bar 48, and the U-shaped groove and the groove of the reinforcing bar 48 are used. The engaging portion 44 and the reinforcing bar 48 are fixed by arc welding of the portion fitted in.

Japanese Patent Laid-Open No. 10-227098

  However, the conventional anchor metal-embedded lightweight cellular concrete panel 40 has the following problems. That is, since it is necessary to fit the reinforcing bar 48 into a relatively narrow U-shaped groove, the positioning of the anchor fitting 42 and the reinforcing bar 48 requires an accurate positioning accuracy. For this reason, there is a problem that the workability of attaching the anchor fitting 42 to the reinforcing bar 48 is poor.

  On the other hand, in such an anchor fitting 42, in order to improve the workability of attaching to the reinforcing bar, the U-shaped groove provided in the lower portion of the locking portion 44 may be expanded. The adhesion between the portion 44 and the reinforcing bar 48 is lowered. In this case, the method of welding the locking portion 44 and the reinforcing bar 48 must be based on the arc welding method. As a result, the locking portion 44 and the reinforcing bar 48 are melted to reduce the mounting strength. There was a problem that it became easier.

  The problem to be solved by the present invention is to provide an anchor bracket embedded lightweight cellular concrete panel excellent in workability and mounting strength of an anchor bracket to a reinforcing bar embedded in a lightweight cellular concrete panel, a manufacturing method thereof, and a manufacturing apparatus thereof. It is to provide.

  In order to solve the above-mentioned problem, the anchor metal-embedded lightweight cellular concrete panel according to the present invention is an anchor metal-embedded lightweight cellular concrete panel in which an anchor metal is attached to a reinforcing bar embedded in the light-weight cellular concrete panel, The anchor fitting has a pair of spaced apart locking portions at the end thereof, and openings opposite to each other are formed on the respective side walls of the pair of locking portions. Is summarized in that one reinforcing bar inserted from the opening of the locking part and the locking part locked to the one reinforcing bar are fixed by spot welding. And

  In this case, it is desirable that the separation distance between the pair of locking portions is in a range of 1 to 4 times the diameter of the reinforcing bar.

  Moreover, it is desirable that a protrusion is provided on the inner peripheral surface of the locking portion.

  And the manufacturing method of the anchor metal fitting embedded lightweight lightweight concrete panel which concerns on this invention is a process of arrange | positioning one reinforcement between a pair of spaced apart latching | locking parts which an anchor metal has, and rotating an anchor metal A step of fitting one reinforcing bar through the opening formed in the side wall of the locking part and locking the locking part to the one reinforcing bar; and the one reinforcing bar and the engagement The gist is to have at least a step of spot welding and fixing the stopper.

  In this case, the tip shape of the welding electrode used for the spot welding may be a substantially U shape having two convex portions, and the heights of the two convex portions may be different.

  Furthermore, an apparatus for manufacturing an anchor metal embedded lightweight cellular concrete panel according to the present invention includes a mechanism for supplying an anchor metal to a reinforcing bar and a pair of spaced apart locking portions that hold the anchor metal and have the anchor metal. A reinforcing bar of the book is arranged and an anchor fitting is rotated, so that one reinforcing bar is inserted from an opening formed in the side wall of the locking part, and the locking part is inserted into the one reinforcing bar. And a mechanism for spot welding the one reinforcing bar and the locking portion.

  According to the anchor metal-embedded lightweight cellular concrete panel according to the present invention, a pair of locking portions are provided in a form separated from the ends of the anchor metal, and openings are formed in opposite directions on the side walls of the pair of locking portions. Since one reinforcing bar is disposed between the pair of locking portions, the anchor metal fitting is horizontally rotated, so that one opening is provided from the opening provided on the side wall of the locking portion. Reinforcing bars can be inserted and locked. As described above, since the anchor fitting can be easily locked to one reinforcing bar, the workability of attaching the anchor fitting to the reinforcing bar is excellent.

  At this time, by positioning one reinforcing bar between the pair of locking parts, the locking part and the reinforcing bar can be positioned. And the magnitude | size between this pair of latching | locking parts can be changed freely, and since it will become easy to position so much if this space is enlarged, the freedom degree of positioning becomes high.

  Further, as described above, in order to increase the degree of freedom of positioning, it is not necessary to widen the opening of the locking portion. Therefore, the opening of the locking portion is narrowed to reduce the inner peripheral surface of the locking portion. Adhesion with the outer peripheral surface of the reinforcing bar can be increased. Thereby, even if the welding between the locking portion and the reinforcing bar is spot-welded, sufficient attachment strength can be obtained. And it is not necessary to weld by the arc welding method like the past, and since it does not melt a latching | locking part and a reinforcement, it becomes excellent also in attachment strength.

  In this case, since the distance between the pair of locking portions of the anchor metal fitting is within the range of 1 to 4 times the diameter of the reinforcing bar, the locking portion does not become too small. The positioning with the reinforcing bars can be easily performed, and a sufficient locking force is secured.

  Then, by providing the protrusion on the inner peripheral surface of the locking portion of the anchor metal, the anchor metal and the reinforcing bar that are locked come into contact with each other at the protrusion, and the contact area is reduced. When spot welding is performed, the supply current concentrates on the contact portion, so that the welding strength can be increased.

  On the other hand, according to the manufacturing method of the anchor metal embedded lightweight cellular concrete panel according to the present invention, the anchor metal can be easily attached to the reinforcing bar and has high mounting strength. A lightweight cellular concrete panel embedded in metal fittings can be manufactured.

  In this case, the tip shape of the welding electrode used for spot welding is substantially U-shaped, and the heights of the two approximately U-shaped projections that come into contact with the workpiece during spot welding are different. When spot welding the anchor metal fitting to the reinforcing bar, the pair of locking portions can be spot welded at a time.

  Then, according to the manufacturing apparatus of the anchor metal-buried lightweight cellular concrete panel according to the present invention, the anchor metal is supplied to the reinforcing bar, and after the supplied anchor metal is gripped, the pair of locking portions of the anchor metal One reinforcing bar is placed on the anchor bar, and the anchor bracket is rotated so that the one reinforcing bar is fitted into the locking portion, so that the anchor bracket is locked to the single reinforcing bar. A series of operations of spot welding the anchor metal fittings fixed to a single reinforcing bar can be performed with high accuracy and efficiency. Can be increased.

  An embodiment of the present invention will be described in detail with reference to FIGS.

  As shown in FIG. 1, for example, as shown in FIG. 1, the anchor reinforcement embedded lightweight cellular concrete panel according to the present invention has a panel reinforcing body 14 embedded in a lightweight cellular concrete panel, and anchor reinforcement metal (horizontal) 16b of the panel reinforcing body 14 is anchor metal. It consists of what 18 was attached.

  The anchor metal-embedded lightweight cellular concrete panel 10 is usually manufactured as having a length of 600 to 6000 mm, a width of 300 to 600 mm, and a thickness of 75 to 200 mm. The number and position of the anchor metal fittings 18 to be attached can be determined as appropriate depending on the size and use of the anchor metal embedded lightweight cellular concrete panel 10.

  The reinforcing bars constituting the panel reinforcing body 14 are arranged in the longitudinal bars (main bars) 16a arranged along the long direction of the anchor metal-embedded lightweight cellular concrete panel 10, and in the direction (short direction) perpendicular thereto. There is a transverse muscle (sub-muscle) 16b. A predetermined number of reinforcing bars are assembled in a mesh shape vertically and horizontally, and a frame (upper frame 20a, lower frame 20b) is formed by welding. The cage-like panel reinforcing body 14 is formed by arranging the frame bodies 20a and 20b at a predetermined interval, and spanning and welding the spacers 22 to both the frame bodies 20a and 20b. In addition, a reinforcing bar etc. are used suitably for the reinforcing bars 16a and 16b. Moreover, the anchor metal fitting 18 is normally locked and fixed to the transverse muscle (secondary muscle) 16b.

  Next, the structure of the anchor metal fitting that can be suitably used for the lightweight metal concrete panel embedded with the anchor metal fitting according to the present invention will be described in detail with reference to FIG. FIG. 2A is a front view of the anchor fitting 18, and FIG. 2B is a side view of the anchor fitting 18.

  The anchor fitting 18 includes a pair of locking portions 18a and 18a at the lower portion (one end). The pair of locking portions 18a and 18a are provided apart from each other, and openings 18g and 18g that are opposite to each other are formed on the side walls of the locking portions 18a.

  The shape of the locking portion 18a is not limited to a substantially C-shape as illustrated. Since it may be a structure in which the openings 18g and 18g are formed on the side wall, for example, it may have a cornered shape such as a substantially square shape or a substantially U shape.

  Then, one reinforcing bar is inserted from the openings 18g and 18g of the pair of locking parts 18a, 18a, and the single reinforcing bar and the locking part are fixed by spot welding, and the lightweight metal concrete embedded in the anchor metal fittings. It becomes a panel.

  Moreover, the anchor metal fitting 18 has the screw part 18b for attaching a lightweight cellular concrete panel main body to a building frame normally at an upper part (other end). As shown in the drawing, the screw portion 18b may be a female screw or a male screw. The shape is not particularly limited as long as it can be attached to the building frame.

  The structure other than the lower part of the anchor metal fitting 18 is not particularly limited. For example, as shown in FIG. 2, the anchor metal part 18 includes a cylindrical part 18d and a communication hole 18e at the center part between the upper part and the lower part. It is good to make it. It is desirable to attach a lid 18c made of porous rubber or the like to prevent the raw material slurry from entering the screw hole when the raw material slurry is poured into the mold frame at the tip of the screw portion 18b.

  In this case, the locking portions 18a, 18a, the cylindrical portion 18d, and the communication hole 18e other than the screw portion 18b are formed by, for example, relative to a pair of identical steel plates in which concave portions are continuously formed from the central portion to the lower portion. And can be formed by welding. And the screw part 18b is also formed by welding and attaching a screw to the upper part of a pair of steel plate formed by joining. Further, when the raw material slurry is injected, for the purpose of preventing the raw material slurry from entering the metal fittings from the joint surface 18f, the lateral end of the steel plate can be bent to close the joint surface 18f.

  In addition, when the anchor metal fitting 18 is formed by welding the pair of steel plates in which the concave portions are formed as described above, it is assumed that the locking portions 18a are provided for each of the pair of steel plates. good. And it can be made for the opening parts 18g and 18g to face a mutually opposing direction by making a steel plate face and face.

  As shown in the figure, protrusions 18h and 18h may be provided on the inner peripheral surfaces of the substantially C-shaped locking portions 18a and 18a. Then, for example, the protrusions 18h and 18h can be formed by applying an external force from the outside of the locking portions 18a and 18a to dent the side walls of the locking portions 18a and 18a inward.

  In addition, although what is shown by FIG. 2 makes the number of latching | locking parts a pair, this arrange | positions one reinforcing bar between a pair of latching | locking parts, and only rotates an anchor metal fitting laterally. This is because the shape is convenient for being easily inserted from the opening. Therefore, it is good also as what provided the number of latching | locking parts three or more, and was spaced apart, respectively. In this case, if one reinforcing bar is arranged between the adjacent locking parts and rotated in the horizontal direction in the same manner, the reinforcing bar can be easily fitted from the opening, and one anchor metal fitting is attached. Can be locked to the reinforcing bar. At this time, it is only necessary that the engaging portions on one side from where the reinforcing bars are arranged and the engaging portions on the other side have openings that are opposite to each other.

  Next, the relationship between the characteristics of the locking portion 18a of the anchor metal fitting 18 and the diameter of the lateral stripe (sub-bar) 16b will be described with reference to FIG. In the figure, the pair of locking portions 18a, 18a has a substantially C-shaped structure, and openings that are opposite to each other are formed on the side walls (front and back surfaces in the figure) of the locking portions 18a, 18a. The part is formed. Thus, since the opening is on the side walls of the locking portions 18a and 18a, an electrode is provided between the non-opening portion of the locking portions 18a and 18a and the horizontal stripe (sub-bar) 16b exposed in the opening. Since it is possible to apply pressure while sandwiching, the structure is easy to spot weld. Note that the side wall of the locking portion refers to the plate thickness of the locking portion.

  In this case, it is preferable that the pair of locking portions 18a and 18a be spaced apart by a diameter Y or more of the horizontal bar (sub-bar) 16b to be locked. The larger the distance X is from the diameter Y of the transverse muscle (secondary muscle) 16b, the easier it is to arrange the transverse muscle (secondary muscle) 16b between the locking portions 18a, 18a.

  On the other hand, when the separation distance X is increased, the locking portion 18a is decreased by that amount, and the locking force is reduced. In this case, it is preferable that the separation distance X is in the range of 1 to 4 times the diameter Y of the transverse muscle (secondary muscle) 16b. More preferably, it is in the range of 2 to 3 times.

  According to the lightweight metal concrete panel 10 with the anchor bracket embedded in such a configuration, a pair of locking portions 18a is provided in a manner spaced apart from the end of the anchor bracket 18, and the side walls of the pair of locking portions 18a and 18a are provided. Since the openings 18g and 18g that are opposite to each other are formed, one reinforcing bar (horizontal bar) 16b is disposed between the pair of locking parts 18a and 18a, and then the anchor bracket 18 is rotated horizontally. By doing so, one reinforcing bar (lateral bar) 16b can be fitted and locked from the openings 18g and 18g provided on the side wall of the locking part 18a. Thus, since the anchor metal fitting 18 can be easily locked to one reinforcing bar (horizontal line) 16b, the workability of attaching the anchor metal piece 18 to the reinforcing bar (horizontal line) 16b is excellent.

  At this time, by positioning one reinforcing bar (lateral bar) 16b between the pair of locking parts 18a, 18a, the locking part 18a and the reinforcing bar (horizontal bar) 16b can be positioned. The size X between the pair of locking portions 18a, 18a can be freely changed, and if the space between the pair is increased, the positioning becomes easier, so the degree of positioning freedom is high.

  Further, as described above, in order to increase the degree of freedom of positioning, it is not necessary to widen the openings 18g and 18g of the locking portion 18a. Therefore, the openings 18g and 18g of the locking portion 18a are narrowed, Adhesion between the inner peripheral surface of the locking portion 18a and the outer peripheral surface of the reinforcing bar (lateral bar) 16b can be increased. Thereby, even if the welding of the locking portion 18a and the reinforcing bar (horizontal bar) 16b is spot-welded, sufficient attachment strength can be obtained. And it is not necessary to weld by an arc welding method like the past, and since it does not melt the latching | locking part 18a and the reinforcing bar (horizontal line) 16b, it will also be excellent in attachment strength.

  When the protrusions 18h and 18h are provided on the inner peripheral surfaces of the locking portions 18a and 18a, the anchor metal fitting 18 and the horizontal bars (secondary bars) 16b that are locked contact each other at the protrusions 18h and 18h. That is, when spot-welding the locking portion 18 and the horizontal stripe (sub-bar) 16b, the contact area becomes small. And since supply current concentrates on the contact part, the welding strength in the contact part can be raised.

  Next, the manufacturing method (henceforth this manufacturing method) of the anchor metal fixture lightweight lightweight concrete panel which concerns on this invention is demonstrated. The manufacturing method includes a step of arranging one reinforcing bar between a pair of locking portions, a step of locking the locking portion by one reinforcing bar, a single reinforcing bar, and a locking portion. And fixing by spot welding. Hereinafter, each step will be described.

  As shown in FIG. 4 (a), the step of arranging one reinforcing bar between the pair of locking portions is a pair of engagements so that the anchor metal fitting 18 is in a direction perpendicular to the horizontal bar (sub bar) 16b. One transverse line (secondary line) 16b is arranged between the stop portions 18a and 18a. In this arrangement, it is not always necessary that the anchor fitting 18 and the transverse stripe (secondary stripe) 16b be orthogonal to each other. This is because there is no problem if the direction (angle) is such that the horizontal stripes (secondary stripes) 16b can be easily placed between the locking portions 18a and 18a.

  Then, in the step of locking the locking portion with one reinforcing bar, the anchor fitting 18 is rotated by 90 ° so that the state shown in FIG. 4 (a) is changed to the state shown in FIG. 4 (b). 18a, 18a is inserted into a lateral line (secondary muscle) 16b from an opening provided in each side wall (facing opposite directions), and the horizontal part (secondary muscle) 16b is engaged with a locking part 18a of the anchor fitting 18. 18a is locked.

  The rotation angle of the anchor fitting 18 is not limited to 90 °. This is because it is determined by the arrangement angle between the anchor metal fitting 18 and the horizontal stripe (sub-bar) 16b in the arrangement step.

  Further, the step of spot welding the one reinforcing bar and the locking part is to fix the anchor metal 18 to one horizontal bar (sub-bar) 16b, and then to the locking parts 18a and 18a. The anchor fitting 18 is fixed to the horizontal line (sub-bar) 16b by spot welding the horizontal bar (sub-bar) 16b.

  In spot welding, for example, as shown in FIG. 5, the outer peripheral surface of the horizontal bar (sub-bar) 16 b and the inner peripheral surface of the locking portion 18 a, 18 a of the anchor metal fitting 18 are brought into contact with each other. It can be performed by pressing and energizing. At this time, one pole is applied to the outer wall surface of the locking portions 18a and 18a of the anchor fitting 18, and the other pole is applied to the outer peripheral surface of the horizontal stripe (sub-bar) 16b fitted in the locking portions 18a and 18a.

  Examples of the material of the electrode 24 include, but are not limited to, a copper alloy. Further, the shape of the electrode 24 is not particularly limited. The shape may be a round bar shape or a roller shape. As for the shape of the electrode 24, preferably, as shown in FIG. 5, the tip shape is substantially U-shaped having two convex portions 24a and 24b, and the height of the two convex portions 24a and 24b is as follows. It is a different electrode rod (in the drawing, the convex portion 24a is higher than 24b). FIG. 5 is a view of the anchor metal fitting 18 and the horizontal stripes (secondary stripes) 16b that are locked from the bottom to the top in FIG. It has become.

  As shown in the figure, the higher convex portion 24a is disposed on the opening side of the locking portion 18a, and the lower convex portion 24b is disposed on the side wall side of the locking portion 18a. In order to achieve such an arrangement, the difference in height between the two convex portions 24a and 24b is compared with the horizontal stripes (secondary muscles) 16b when the locking portions 18a are locked to the horizontal stripes (secondary muscles) 16b. It is good to make it the same as the difference of thickness with the side wall surface of the latching | locking part 18a. Thereby, when the latching | locking part 18a and the horizontal line | wire (secondary reinforcement) 16b are pinched | interposed with the electrode 24, it can clamp firmly, and the two latching | locking parts 18a and 18a can be spot-welded at once.

  According to the manufacturing method having such a configuration, the anchor metal fitting 18 can be easily attached to the reinforcing bar 16b and has high attachment strength. Can be manufactured.

  About the other process which manufactures an anchor metal fixture lightweight lightweight concrete panel, what is necessary is just to pass through the process generally known. As a generally known process, processes S1-S6 as shown in FIG. 6 can be illustrated, for example.

  That is, a mold for injecting the raw material slurry is assembled (S1), the reinforcing bar and the anchor fitting are arranged in this mold (S2), and the raw material slurry is injected into the mold in which the reinforcing bar and the anchor fitting are arranged. (S3), the injected raw material slurry is foamed and semi-cured (S4), the semi-cured concrete is divided and cut (S5), and the concrete is completely cured (cured) in an autoclave (S6). An embedded lightweight cellular concrete panel is obtained.

  In the step of assembling the mold (S1), if two sets of reinforcing bars are prepared in the length direction, a large number of anchor metal-embedded lightweight cellular concrete panels can be manufactured efficiently.

  As shown in FIG. 1, the panel reinforcement is formed by arranging two welded frames that are assembled in a mesh shape vertically and horizontally by a plurality of reinforcing bars and arranged at predetermined intervals, and a spacer is bridged between both frames. And formed into a cage shape by welding. After attaching an anchor metal fitting to this panel reinforcement body, it arrange | positions in a formwork (S2).

  Next, the raw material slurry is injected into the formwork in which the panel reinforcement is disposed (S3). A foaming agent such as aluminum powder is added to the raw material slurry in order to expand the normal concrete slurry to a volume of about 2 to 3 times.

  And after pouring raw material slurry in a formwork, this raw material slurry is made to foam by generation | occurrence | production of the hydrogen gas by a foaming agent. Then, by leaving it for a predetermined time, the raw material slurry is solidified to become a semi-cured concrete (S4).

  After removing the semi-cured concrete from the mold, it is divided and cut so as to include one embedded panel reinforcement (S5).

  Thereafter, the semi-cured concrete containing one panel reinforcement is put in an autoclave and cured under high temperature and high pressure steam to be completely cured (S6) to obtain a lightweight cellular concrete panel.

  Next, an apparatus for manufacturing an anchor-fitting embedded lightweight cellular concrete panel according to the present invention (hereinafter sometimes referred to as the present manufacturing apparatus) will be described. 7 and 8 show the overall configuration of the manufacturing apparatus. FIG. 7 is a view of the manufacturing apparatus as seen from the side, and FIG. 8 is a view as seen from the front.

  The manufacturing apparatus includes at least a mechanism for supplying an anchor fitting to a reinforcing bar, a mechanism for locking a locking portion on one reinforcing bar, and a mechanism for spot welding the single reinforcing bar and the locking portion. Have.

  First, the entire manufacturing line is provided with a conveyor device 26 that conveys the frame body 20b from a frame manufacturing process (not shown) to a concrete molding process (not shown), and this manufacturing apparatus can be operated while conveying the frame body 20b. . In this case, the mechanisms of the manufacturing apparatus are arranged in the vicinity of the conveyor device 26. In addition, as for the frame 20b conveyed on the conveyor apparatus 26, the vertical line | wire (main line | wire) 16a is arrange | positioned along the advancing direction of a conveyor, and a horizontal line | wire (secondary line | wire) 16b is arrange | positioned in the direction orthogonal to it.

  In the frame body 20b, four vertical bars (main bars) 16a are arranged vertically at equal intervals, and horizontal bars (sub-barbs) 16b are superimposed on the vertical bars (main bars) 16a, and are sandwiched by electrodes from above and below to generate a high-voltage current. It is formed into a mat shape by resistance welding of the vertical bars (main bars) 16a and the horizontal bars (sub bars) 16b. The arrangement interval of the horizontal stripes (secondary muscles) 16b varies depending on the size of the panel. For example, in the case of a panel having a length of 3000 mm, usually 5 to 6 horizontal stripes (secondary muscles) 16b are arranged. And the anchor metal fitting 18 is often attached to the 2nd-3rd horizontal stripe (sub-bar) 16b from both ends.

  Moreover, in this manufacturing apparatus, although the anchor metal fitting 18 can be attached to the frame 20b conveyed by the conveyor apparatus 26, it is also possible to attach the anchor metal fitting 18 while conveying the panel reinforcement body 14. FIG. Preferably, the object is the frame body 20b, which has advantages such as a wide working space and easy work.

  Here, in FIGS. 7 and 8, a roller conveyor is shown as the conveyor device 26, but it is not particularly limited. When using a roller conveyor, the roller 26a is provided, and the groove 26b used as the passage of the vertical line (main line) 16a is formed in this roller 26a. And by making this roller 26a itself into a magnet, the frame 20 can be moved by the magnetic force of the rotating roller 26a. Therefore, in this case, a reinforcing bar is preferably used as the reinforcing bar.

  Further, the groove 26b formed in the roller 26a is for preventing the vertical stripe (main stripe) 16a from coming off in the width direction of the roller 26a. The roller 26a of the conveyor device 26 can be operated by chain drive, but may be belt-driven.

  As shown in FIG. 8, the mechanism (anchor bracket supply mechanism 30) for supplying the anchor bracket to the reinforcing bar is composed of a hopper 30a, a parts feeder 30b, a rectilinear feeder 30c, and a tray 30d. It is arranged on the side near the center.

  The hopper 30a is for stacking the anchor metal pieces 18 in a random state. Moreover, the parts feeder 30b is for aligning the anchor metal fittings 18 input from the hopper 30a by vibration and transporting them one by one. Moreover, the straight advance feeder 30c is for conveying the anchor metal fittings 18 one by one by vibration like the parts feeder 30b. In addition, the tray 30d is used to drop the anchor bracket so as to convey the anchor fitting to the vicinity of the mounting position.

  The hopper 30a, parts feeder 30b, rectilinear feeder 30c, and tray 30d can be combined using commercially available products. On the inner periphery of the parts feeder 30b, it is preferable to provide a spiral feeding path or the like for moving the anchor metal member 18 from the top to the bottom by vibration. And the anchor metal fittings 18 are aligned in a line by setting the width of the feed path so that the anchor metal parts 18 can move in a line. For those in which the anchor metal piece 18 moves on the feeding path, a wiper or the like for removing the anchor metal piece 18 that has overlapped in the middle of the feeding path may be provided.

  In order to align the orientations of the anchor fittings 18 in a line, a guide member or the like may be provided at the terminal end of the feed path. The anchor fitting 18 has a screw portion 18b that is larger in the thickness direction than the cylindrical portion 18c and the locking portion 18a. Then, it is only necessary to form a slit between this guide member and the feeding path so that only the screw portion 18b does not pass. As a result, the threaded portion 18b is hooked on the guide member to align the orientation of the anchor fitting 18.

  Then, the anchor fittings 18 that have come out of this terminal portion are carried one by one in a state where they are aligned with the straight advance feeder 30c following the parts feeder 30b, and further carried to the subsequent tray 30d. The tray 30d is disposed obliquely downward from the rectilinear feeder 30c at a position higher than the supply location of the anchor fitting 18 toward the supply location.

  As shown in FIG. 7, the mechanism for locking the locking portion to one reinforcing bar is composed of an arrangement / rotation mechanism 32 disposed above the vicinity of the center of the conveyor device 26. The arrangement / rotation mechanism 32 mainly includes a lateral movement frame 32a, a vertical movement frame 32b, an elevating cylinder 32c, a rotation device 32d, and an arm 32e.

  The lateral movement frame 32a can be moved in a direction (lateral direction) perpendicular to the traveling direction of the conveyor by the cylinder 32g via the rail 32f, and the horizontal stripe (sub-bars) of the frame body 20b conveyed by the conveyor device 26. ) Used to adjust the horizontal mounting position on 16b.

  A receiving metal fitting 32h is attached to the lower part of the lateral movement frame 32a so as to be suspended in an inclined state, and a cylinder 32i is attached to the side thereof. The cylinder 32i is disposed in the vicinity of the receiving metal fitting 32h. The receiving metal fitting 32h is disposed at the end of the tray 30d and receives the anchor metal fitting 18 that has fallen and dropped, and the cylinder 32i is used to raise the receiving metal fitting 32a vertically from the inclined position.

  A stopper is provided in the middle of the tray 30d so that the next anchor fitting 18 is not supplied and dropped from the tray 30d when the receiving fitting 32h at the end of the tray 30d is raised vertically by the cylinder 32i. Several places should be provided.

  The longitudinal movement frame 32b is provided on the upper part of the lateral movement frame 32a on the front side in the conveyor traveling direction, and can be moved forward and backward by the cylinder 32k via the guide 32j.

  An elevating cylinder 32c, a rotating device 32d, and an arm 32e are attached to the vertical movement frame 32b. The arm 32e is disposed below the rotating device 32d, and is moved up and down and rotated by the lifting cylinder 32c and the rotating device 32d. The arm 32e can be opened and closed in order to hold the screw portion 18b of the anchor metal fitting 18 that fits in the receiving metal fitting 32h. The arm 32e is normally an air chuck, but may be an electromagnetic chuck other than the air type. These can be moved above the receiving bracket 32h by the movement of the longitudinal movement frame 32b.

  A mechanism for spot-welding one reinforcing bar and the locking portion includes a welding mechanism 34 disposed below the vicinity of the center of the conveyor device 26.

  The welding mechanism 34 includes a welding electrode portion 34a and an elevating device 34b that moves the welding electrode portion 34a up and down. The welding electrode portion 34a has a pair of electrodes 34c and 34c attached to the shaft 34d, and the cylinder 34e opens and closes the pair of electrodes 34c and 34c. And the transformer 34f is arrange | positioned under the electrodes 34c and 34c.

  These welding electrode portions 34a can be lifted and lowered by a lifting device 34b provided therebelow. The lifting device 34b moves up and down by the pantograph method, but may be a cylinder method and is not particularly limited. The welding electrode portion 34a is opened and closed while being lifted up and down by an elevating device 34b so as not to come into contact with the horizontal streak (secondary muscle) 16b when opened due to the relationship with the arrangement interval of the horizontal streaks (secondary muscle) 16b of the frame 20b. It is preferable.

  The lifting / lowering device 34b can be moved in a direction orthogonal to the traveling direction of the conveyor by a cylinder 34h via the rail 34g, and the welding position is adjusted according to the adjustment position by the lateral movement frame 32a of the arrangement / rotation mechanism 32. Used to do.

  In addition, the manufacturing apparatus may include a stop mechanism 28. The stop mechanism 28 is installed on both sides near the center of the conveyor device 26, and stops the frame 20b at a predetermined position when the anchor fitting is attached. When the stop mechanism 28 is not installed, the operation of the arrangement / rotation mechanism 32 and the welding mechanism 34 is performed after the operation of the conveyor device 26 is stopped at a predetermined position.

  The stop mechanism 28 includes a gear 28a provided at both ends of the roller 26a of the conveyor device 26, and a control device (not shown) that measures the rotation of the gear 28a and stops the gear at a predetermined rotation. The gear 28a shown in the figure has four teeth, but is not limited thereto.

  When the frame body 20b moves on the conveyor device 26, the gear 28a comes into contact with the horizontal stripes (secondary muscles) 16b of the frame body 20b. Streak) 16b is counted. Since the gear 28a is a ratchet type, it does not rotate in the opposite direction. Further, the rotation is detected by a sensor, and an encoder is used to determine how many transverse stripes (subsidiary muscles) 16b have passed through the tachometer.

  Next, with reference to FIGS. 7-9, operation | movement of this manufacturing apparatus is demonstrated (what installed the conveyor apparatus 26 and the stop mechanism 28 is demonstrated). As shown in FIGS. 7 and 8, the arrangement / rotation mechanism 32 and the welding mechanism 34 are set so that the lateral movement frame 32a and the welding electrode portion 34a are located at substantially the center in the width direction of the frame body 20b. ing.

  The anchor fittings 18 thrown into the hopper 30a are aligned in a row by the vibration of the parts feeder 30b, and are fed one by one to the tray 30d through the straight feeder 30c in the state of being aligned. The anchor fitting 18 is tilted and dropped on the tray 30d with the locking portion 18a facing down, and is received by the receiving fitting 32h so that the thickness direction thereof is perpendicular to the traveling direction of the conveyor, and is raised vertically by the cylinder 32i. It becomes a state.

  On the other hand, the frame body 20 b formed in a mesh shape with reinforcing bars on the conveyor device 26 further moves on the conveyor device 26. At this time, the passing horizontal stripes (secondary muscles) 16b are counted by the gear 28a of the stop mechanism 28, and when the predetermined number has passed, the rotation of the gear 28a is stopped, and the frame at the position of the predetermined horizontal stripes (secondary reinforcement) 16b The body 20b is stopped.

  In this state, the arm 32e of the arrangement / rotation mechanism 32 is moved from the position A (anchor bracket mounting position) to the position B (anchor bracket supply position) in FIG. After that, the upper end (screw portion 18b) of the anchor metal fitting 18 in the vertically raised state is grasped (see FIG. 9A).

  The arm 32e that has grasped the anchor fitting 18 rises again by the operation of the elevating cylinder 32c and returns to the position A by the operation of the longitudinal movement frame 32b. At this position A, the arm 32e is moved down by the operation of the elevating cylinder 32c, and between the locking portion 18a and the locking portion 18a of the anchor fitting 18, one horizontal bar (sub-bar) 16b of the stopped frame 20b. Is positioned (the anchor fitting 18 and the transverse stripe (secondary stripe) 16b are positioned in a direction orthogonal to each other (see FIG. 9B)).

  After that, the arm 32e is rotated by 90 ° by the rotating device 32d, and the locking portion 18a of the anchor fitting 18 is locked to one horizontal bar (sub-bar) 16b from the opening (see FIG. 9C). ).

  In this state, the welding electrode portion 34a of the welding mechanism 34 is lifted up by the elevating device 34b, and the locking portion 18a and the horizontal stripe (sub-bar) 16b are sandwiched between the pair of electrodes 34c and 34c. Then, the engaging portion 18a and the horizontal stripe (sub-bar) 16b are pressurized and energized by the pair of electrodes 34c and 34c, and are spot-welded (see FIG. 9D).

  After the anchor metal fitting 18 and the horizontal bars (sub-bars) 16b are welded, the opening operation of the pair of electrodes 34c and 34c and the welding electrode part are performed so that the pair of electrodes 34c and 34c do not contact the horizontal bar (sub-bar) 16b. The lowering operation by the elevating device 34b of 34a is performed simultaneously, and the welding electrode portion 34a returns to a predetermined position.

  At the same time, the arm 32e is opened and rotated 90 ° in the opposite direction to the original position while being lifted away from the anchor bracket 18 and returned to the original position. Thereby, the attachment of the anchor metal fitting 18 to the transverse line (secondary line) 16b is completed. After the end, the gear 28a of the stop mechanism 28 is restarted by a signal from the control device, and the passage of the horizontal stripe (secondary reinforcement) 16b is counted again by the gear 28a.

  After such an anchor fitting attachment operation is performed at two locations on the top and bottom of one panel, the frame 20b to which the anchor fitting 18 is attached is further fed by the conveyor device 26, and the anchor fitting 18 is attached. It is arranged in parallel with the frame body 20 a that is not, and is welded to the cage-like panel reinforcement body 14 by the spacer 22. Thereafter, the panel reinforcement body 14 to which the anchor metal fittings 18 are attached is sent to the concrete forming process, and after being embedded in the concrete, the anchor metal fitting embedded lightweight cellular concrete panel is manufactured.

  According to the manufacturing apparatus having such a configuration, after the anchor metal fitting 18 is supplied to the frame body 20b and the supplied anchor metal fitting 18 is gripped, 1 is interposed between the pair of locking portions 18a, 18a of the anchor metal fitting 18. The horizontal bar (sub-bar) 16b is arranged, and the anchor bracket 18 is rotated so that the horizontal bar (sub-bar) 16b of the frame 20b is fitted into the locking portion 18a, so that the anchor bar 18 is connected to one horizontal bar (sub-bar). ) A series of operations of fixing to the frame body 20b by spot welding the anchor metal fitting 18 locked to 16b and locked to one horizontal bar (sub-bar) 16b with high mounting accuracy and efficiency. It can be carried out. Moreover, when using the conveyor apparatus 26, since such a series of operation | work can be performed by a flow operation, the productivity of the anchor metal fitting lightweight lightweight concrete panel 10 can further be improved.

  In this case, since the distance between the locking portion 18a and the locking portion 18a is in the range of 2 to 3 times the diameter of the transverse stripe (sub-bar) 16b (in this embodiment, about twice as large. For example, even if the horizontal stripes (secondary stripes) 16b are slightly distorted by welding when forming the frame body 20b, the positioning can be performed without shifting. That is, when the anchor metal fitting is locked to one reinforcing bar (horizontal bar) as in the prior art, this reinforcing bar (horizontal bar) is used to accurately position the anchor metal locking portion and the reinforcing bar. There is no need for a reinforcing bar gripping mechanism or the like for fixing at an accurate position, and the anchor fitting and the reinforcing bar (lateral bar) can be easily positioned. And the latching | locking part 18a of the anchor metal fitting 18 can be easily latched by the horizontal line | wire (secondary muscle) 16b.

  Furthermore, when the stop mechanism 28 is provided, the frame body 20b to which the anchor metal fitting 18 is attached can be automatically stopped, and then the above series of operations can be performed. Further, even when the pitch of the horizontal stripes (secondary muscles) 16b of the frame body 20b is different, the frame body 20b can be automatically stopped at a predetermined position based on the preset number of passages, and the predetermined horizontal stripes (secondary muscles) The anchor metal fitting 18 can be attached to 16b.

  As mentioned above, although embodiment of this invention was described in detail, this invention is not limited to the said embodiment at all, A various change is possible in the range which does not deviate from the summary of this invention.

  For example, in the above-described embodiment, the welding position of the anchor fitting is fixed at the center in the width direction of the panel reinforcing body, but it can also be attached by being offset in the width direction from the demand during use. It is also possible to weld anchor fittings to the four corners of the panel reinforcement. Furthermore, it is also possible to provide two sets of anchor metal supply mechanism, arrangement / rotation mechanism, and welding mechanism on the production line, and attach the anchor metal to both ends of the panel reinforcement at the same time.

  Further, the arrangement of the arrangement / rotation mechanism 32 is not limited to the upper part in the vicinity of the center of the conveyor device 26, and may be the lower part thereof. The position at which the welding mechanism 34 is disposed is not limited to the lower part near the center of the conveyor device 26, and may be above the lower part.

It is a perspective view showing one embodiment of an anchor metal fitting lightweight cellular concrete panel concerning the present invention. It is a figure showing an example of the structure of the latching | locking part of an anchor metal fitting. It is an enlarged view showing the state in which the anchor metal fitting is locked and fixed to one reinforcing bar (lateral bar). It is a figure explaining the attachment method of the anchor metal fitting to one reinforcing bar. It is a figure explaining the tip shape of a welding electrode. It is process drawing explaining the manufacturing method of an anchor metal fitting lightweight lightweight concrete panel. It is a whole side view which shows an example of the manufacturing apparatus which concerns on this invention. It is a whole front view which shows an example of the manufacturing apparatus which concerns on this invention. It is an enlarged view explaining operation | movement of the manufacturing apparatus which concerns on this invention. It is a figure explaining the attachment structure to the reinforcement bar of the conventional anchor metal fitting.

Explanation of symbols

10 Anchor metal embedded lightweight cellular concrete panel 14 Panel reinforcement 16a Longitudinal reinforcement (main reinforcement)
16b Transverse muscle (secondary muscle)
18 Anchor bracket 18a Locking portion 18g Opening portion 18h Projection portion 20a, 20b Frame 30 Anchor bracket supply mechanism 32 Arrangement / rotation mechanism 34 Welding mechanism X Separation distance between locking portion and locking portion Y Diameter of reinforcing bar (horizontal bar)

Claims (6)

An anchor bracket embedded lightweight cellular concrete panel in which an anchor bracket is attached to a reinforcing bar embedded in a lightweight cellular concrete panel,
The anchor metal fitting has a pair of spaced apart locking portions at its ends, and openings that are opposite to each other are formed on the side walls of the pair of locking portions,
The anchor fitting is attached by spot welding of one reinforcing bar inserted from the opening of the locking part and the locking part locked to the single reinforcing bar. A lightweight cellular concrete panel embedded in anchor metal fittings.   The anchor metal-embedded lightweight cellular concrete panel according to claim 1, wherein a distance between the pair of locking portions is in a range of 1 to 4 times the diameter of the reinforcing bar.   The anchor metal-embedded lightweight cellular concrete panel according to claim 1, wherein a protrusion is provided on an inner peripheral surface of the locking portion. Placing one reinforcing bar between a pair of spaced apart locking portions of the anchor fitting;
A step of inserting one reinforcing bar from an opening formed in the side wall of the locking part by rotating the anchor metal and locking the locking part to the one reinforcing bar;
Fixing the one reinforcing bar and the locking portion by spot welding;
The method for producing a lightweight cellular concrete panel embedded with an anchor fitting according to any one of claims 1 to 3, wherein:   5. The anchor metal embedment lightweight according to claim 4, wherein a tip shape of the welding electrode used for the spot welding is a substantially U shape having two convex portions, and the heights of the two convex portions are different. A method for producing a cellular concrete panel. A mechanism for supplying anchor fittings to the reinforcing bars,
An opening formed on the side wall of the locking portion by gripping the anchor fitting and disposing one reinforcing bar between a pair of spaced apart locking portions of the anchor fitting and rotating the anchor fitting. A mechanism for inserting one reinforcing bar and locking the locking portion to the one reinforcing bar;
A mechanism for spot welding the one reinforcing bar and the locking portion;
The apparatus for producing a lightweight lightweight concrete panel with embedded anchor metal fittings according to any one of claims 1 to 3, wherein:

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