JP2018015982A - Method for producing block body for the positioning of separator for mold frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing block bodies for the positioning of a separator for mold frames, while easily releasing block bodies for positioning from each mold making frame, capable of smoothly performing separation from core materials.SOLUTION: After mortar M filled to each mold making frame 31 in a state where a through hole part 32 is covered with the tip of a core material 33 is cured, in a state where the mortar-fitted mold making frame body 3 is rotated up and down, they are placed on a hollow mold making frame body 3 in such a manner that the mutual respective mold making frames 31 are made consistent in a vertical direction and are installed in the lower part of a lift, the respective core materials 33 of the mortar-fitted mold making frame bodies 3 are pushed out from each through hole part 32 by the lowering of each core material bar 142 of the lift, the tip thereof is inserted into ech through hole part 32 of the hollow mold making frame body 3 to obtain an injection preparation state capable of injecting the mortar M into each mold making frame 31 of the hollow mold making frame body 3, and further, in accordance with the extrusion operation of core material 33 extruded from each mold making frame 31 of the mortar-fitted mold making frame body 3, each block body 21 for positioning is extruded so as to be acquired.SELECTED DRAWING: Figure 13

Description

  The present invention relates to a method for manufacturing a positioning block body for a formwork separator used to hold the inside of a formwork at a predetermined interval when assembling a formwork for producing a concrete structure.

  In general, when constructing a concrete structure, in order to harden the mortar, which is a fluid, into a desired shape, a pair of concrete molds composed of steel plates, plywood, etc. A mold separator for maintaining the internal space at a predetermined size is used.

  By the way, the conventional separator for formwork is basically composed of a rod-shaped shaft body A and plastics provided at both ends in the length direction of the shaft body A, as schematically shown in FIG. And a pair of scissors-shaped positioning members B.

  Further, male screw portions C are formed at both ends in the length direction of the shaft body A, and an annular break groove D is formed at a predetermined length inward from the inner end of the male screw portion C in the shaft body A. And a stopper E positioned outside the break-off groove D is formed, and the positioning member B is interposed between the male screw portion C and the stopper E in the shaft body A (see Patent Document 1).

  In such a mold separator, each positioning member B is brought into contact with the inner surface of the mold F, and the mold clamping member G is fastened to the male thread portion C of the shaft A protruding outside the mold F. Thus, the interval between the molds F is set. After the construction of the concrete structure, the mold fastening members G are loosened from the male threaded portions C at both ends of the shaft body A to remove the mold F, and the male threaded portions C are cut off from the folding grooves D at both ends of the shaft A. Then, after the positioning member B is removed, the space after the positioning member B is removed is filled with mortar.

  Further, as each positioning member, there is one using a positioning block formed of mortar (see Patent Document 2). Since such a positioning block body is integrated with the concrete structure, there is no need to remove the positioning block body after removing the male threaded portions from the cut-off grooves at both ends of the shaft body. Mortar or the like is filled in the insertion hole for the shaft body opened in the subsequent positioning block body.

Japanese Utility Model Publication No. 6-4258 JP 2010-163857 A

  By the way, if the positioning block body formed by the mortar described above is used, it is not necessary to remove the positioning block body, so it is only necessary to fill the shaft body hole of the positioning block body after removing the male screw portion with mortar or the like. Therefore, a smaller amount of mortar is required as compared with the case where mortar is filled in a large space after removal of the positioning member made of plastic, and the mortar filling operation can be speeded up and increased in efficiency.

  In that case, when manufacturing the positioning block body made of mortar, a mold-taking frame body in which a plurality of mold-taking frames for individually molding the positioning block bodies are arranged vertically and horizontally is used. At this time, a core material having a diameter substantially matching the insertion hole of the positioning block body needs to be erected on the bottom of each mold taking frame.

  Then, when obtaining the positioning block body from each mold frame of the mold frame, the positioning block is applied from each mold frame by applying an impact to the core material of each mold frame with a hammer or the like. I try to release my body.

  However, to the extent that an impact is applied to the core material of each mold taking frame with a hammer or the like, the positioning block body is very difficult to release from each mold taking frame, and the operation is very troublesome. In addition, it is necessary to separate the positioning block body from the core material, and a countermeasure for it has been desired.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a mold that can be easily separated from the core material while easily releasing the positioning block body from each mold taking frame. It is providing the manufacturing method of the block body for positioning of the separator for frames.

  In order to achieve the above object, in the present invention, a mold separator for holding a fixed gap between molds facing each other by screwing members that are screwed into male screw portions at both ends in the longitudinal direction of the shaft body. The manufacturing method of the positioning block body having a substantially frustoconical shape that is inserted and mounted so that the small-diameter side ends are in contact with the inner ends of the molds with respect to both end portions of the shaft main body. And each mold-taking frame in which the small-diameter side end of the positioning block body is located using a mold-taking frame body in which a plurality of mold-taking frames that individually mold the positioning block body are arranged vertically and horizontally The end of the core material having a diameter substantially matching the insertion hole of the positioning block body is inserted into the through-hole portion penetrating at the bottom of each of the positioning block bodies, and the lid is put in this state. The filling process of filling the mortar from around the base end of the material, and after the mortar filled in each mold frame in the filling process is cured, the mold frame body filled with this mortar is turned upside down. In this state, the molds are placed on an empty mold frame having the same shape so that the mold frames are aligned in the vertical direction, and the cores approximately match the diameter of the core material of the mold frames. Below each of the cores below the elevator that raises and lowers the bar An installation step in which the tip of the rod is placed so as to face the core material of each mold frame of the dressed frame, and each core material of the dressed frame frame installed in the installation step The core rods of the elevator are lowered, and the cores of the molded mold frame body are pushed out from the through-hole portions of the mold mold frame body so that the through-holes of the empty mold frame body And inserting a tip into each part to obtain an injection preparation state in which mortar can be injected into each mold frame from around the base end of each core material of the empty mold frame, and And an injection preparation / acquisition step in which the positioning block body is pushed out and acquired in accordance with the pushing-out operation of the core material pushed out from each mold taking frame of the take-up frame body.

  Further, a convex piece respectively accommodated inside each mold taking frame of the empty mold taking frame body is provided between the empty mold taking frame body and the worn mold taking frame body in the installation step. An intermediate core loading jig provided is interposed, provided in the core core loading jig inside each convex piece, and from each mold frame of the dressed frame body in the installation step. A guide path for guiding the extruded core material to each through-hole portion of the empty mold frame and a base end side of the guide path. And a receiving portion that receives the positioning block body that is pushed out and separated from each mold frame of the frame body.

  Furthermore, each guide path may be formed in a tapered surface that increases in diameter as it approaches the base end from a distal end side portion having a diameter that substantially coincides with each through-hole portion of the empty mold frame. .

  In short, when the mortar filled in each mold frame of the mold frame is cured, an empty mold having the same shape as the mold mold frame filled with the mortar is turned upside down. Each mold frame is placed on the frame so that the mold frames are aligned with each other in the vertical direction, and the core of each mold frame of the mold frame with the tip of each core rod is placed under the elevator. Install so as to face each material. Then, each core rod of the elevator is lowered with respect to the core material of each mold frame of the dressed frame, and the core material is removed from the through-hole portion of each mold frame of the dressed frame body. Each positioning block is extruded and acquired in accordance with the extrusion operation of each core material. As a result, when releasing the positioning block body from each mold frame and core material of the mold frame body, each core of the elevator is not applied to the core material of each mold frame with a hammer or the like. When the core is pushed down, the positioning block body is easily released from each mold taking frame as the core material is pushed out from the mold taking frame. It can be separated smoothly.

  In addition, each core material of the molded mold frame body is pushed out from each through hole portion of the mold mold frame body, and the tip is inserted into each through hole portion of the empty mold mold frame body. Extruding the core material extruded from the through-hole part of each mold-fitting frame by obtaining an injection preparation state in which mortar can be injected into each mold-carrying frame from around the base end of each core material of the body At the same time, the positioning block body is pushed out and acquired in accordance with the operation, and at the same time, the core material pushed out from the through-hole portion of each mold-receiving frame is inserted into the through-hole portion of each mold-receiving frame of the empty mold-taking frame body. Thus, it is possible to quickly and efficiently obtain an injection preparation state in which mortar can be injected, and the manufacturing process of the positioning block body can be greatly shortened.

  In addition, in the installation process, a core loading jig having convex pieces respectively accommodated inside each mold frame of the blank mold frame between the blank mold frame and the worn mold frame. The core material pushed out from each mold taking frame of the mold taking frame body that has been used in the installation process is inserted into this center core loading jig through the guide path of the convex piece. The core material pushed out from each mold taking frame of the mold casting frame body is guided to the through hole part of each mold taking frame to the through hole part of each mold taking frame of the empty mold casting frame body. Each can be guided smoothly and reliably. Furthermore, the positioning block body which is pushed out from each mold frame of the molded mold frame and separated by the receiving part is received together with the fine debris by the receiving part, and the delivery of the positioning block body released from each mold frame is smooth. In addition, it is possible to reliably prevent debris from being mixed into the mortar injected into each mold frame of the empty mold frame that has obtained the injection ready state.

  Furthermore, each guide path is formed into a tapered surface that increases in diameter as it approaches the base end from the distal end side portion having a diameter that substantially coincides with the through-hole portion of each mold taking frame of the empty mold taking frame body. The core material that is pushed out from each mold frame of the mold frame that has been removed by lowering each core rod of the elevator is unreasonable against the base end whose diameter has been expanded relative to the guide path of the convex piece. It is possible to guide more smoothly and reliably to each through-hole portion of the empty mold frame by the leading end that is guided and reduced in diameter.

It is a perspective view of the manufacturing apparatus used with the manufacturing method of the block body for positioning of the separator for formwork which concerns on embodiment of this invention. It is a side view of the manufacturing apparatus of FIG. It is explanatory drawing of the state which assembled | attached the separator for mold forms which has the block body for positioning manufactured with the manufacturing apparatus of FIG. 1 between mold forms. It is the top view which looked at the type | mold taking frame provided in the manufacturing apparatus of FIG. 1 from upper direction. It is the bottom view which looked at the mold frame of the manufacturing apparatus of FIG. 4 from the downward direction. It is the side view which looked at the mold frame of the manufacturing apparatus of FIG. 4 from the side. It is the top view which looked at the core loading jig | tool provided in the manufacturing apparatus of FIG. 1 from upper direction. It is the bottom view which looked at the core loading jig | tool of the manufacturing apparatus of FIG. 7 from the downward direction. It is the side view which looked at the core loading jig | tool of the manufacturing apparatus of FIG. 7 from the side. It is the perspective view which looked at the core loading jig | tool of the manufacturing apparatus of FIG. 7 from diagonally upward. It is explanatory drawing explaining the filling process which fills each mold taking frame of the mold taking frame of the manufacturing apparatus of FIG. 1 with mortar. It is explanatory drawing explaining the installation process which installs an empty mold-capturing frame body and a used mold-capturing frame body in the manufacturing apparatus of FIG. It is explanatory drawing explaining the injection | pouring preparation and acquisition process which descend | falls each core bar of an elevator with respect to each core material of the mold form frame of the manufacturing apparatus of FIG. FIG. 13 is a cross-sectional plan view in which the mold frame of the empty mold frame body of FIG. 12 is cut in the vicinity of a through-hole portion. It is the cross-sectional top view which cut | disconnected the mold making frame of the empty mold taking frame body of FIG. 13 in the through-hole part vicinity. It is a partially omitted front view showing a conventional mold separator.

  Hereinafter, an example of the manufacturing apparatus which manufactures the block body for positioning of the separator for formwork which concerns on embodiment of this invention is demonstrated based on drawing.

  FIG. 1 is a perspective view of a manufacturing apparatus used in a method for manufacturing a positioning block body for a form separator according to an embodiment of the present invention, and FIG. 2 is a side view of the manufacturing apparatus. In FIG. 1 and FIG. 2, reference numeral 1 denotes a manufacturing apparatus for manufacturing a positioning block body 21 for a mold separator 2 described later. The manufacturing apparatus 1 includes a substantially rectangular installation base (not shown) provided on an installation surface (not shown) and upper ends of support pillars 10 (only three are shown in FIG. 1) extending upward from four corners of the installation base. A substantially rectangular mounting table 11 attached to the support plate 12, a support plate 12 attached to the middle of four columns (not shown) each extending upward from the mounting table 11, and an upper surface of the support plate 12 An attached guide plate 13 and an elevator 14 attached to the upper end of each column are provided.

  The elevator 14 is attached to the tip (lower end) of a piston rod (not shown) of an air cylinder (not shown), and is substantially rectangular box-shaped elevator 141 that moves up and down according to the expansion and contraction of the piston rod, and the lower surface of the elevator 141 below the elevator 141. Are provided with a plurality of core rods 142, 142,. The support plate 12 and the guide plate 13 are provided with guide holes 121 and 131 (see FIGS. 12 and 13) for guiding the core rods 142 that move up and down as the elevating body 141 moves up and down. . In this case, the air pressure of the air cylinder when the piston rod is extended to lower the elevating body 141 is set to 0.80 MPa to 0.90 MPa.

  FIG. 3 shows an explanatory diagram of a state in which the mold separator having the positioning block manufactured by the manufacturing apparatus 1 is assembled between the molds. In FIG. 3, reference numeral 2 denotes a formwork separator. The formwork separator 2 is basically a positioning body 20 and a positioning body mounted on both ends in the longitudinal direction of the shaft body 20. The block bodies 21 and 21 and the retaining member 22 for preventing the positioning block bodies 21 from coming off the shaft body 20 are provided. The mold separator 2 is set between the pair of molds 27 and 27.

  The shaft body 20 includes a rod-shaped shaft main body 201 and a male screw portion 202 integrally extending in the axial direction from both longitudinal ends of the shaft main body 201. At the inner end portion of the male screw portion 202, there are a loading portion 23 for the positioning block body 21 and the retaining member 22, and a threaded groove 24 located closer to the shaft body 201 (inward) than the loading portion 23. Is provided.

  The twist groove 24 has a V-shaped cross section, is formed on the entire outer periphery of the shaft main body 201, and is twisted by a rotation operation with the shaft core of the male screw portion 202 with respect to the shaft main body 201 as a fulcrum. Can be separated from the shaft main body 201. Further, the inner end of the twist groove 24 is formed to have a diameter slightly larger than the diameter of the shaft main body 201, and restricts further inward movement of the ring-shaped positioning member 25 inserted through the loading portion 23. ing.

  Each positioning block body 21 is formed in a substantially frustoconical shape by the mortar M, and the large-diameter side end 211 is brought into contact with the positioning member 25 to restrict the inward movement further. An insertion hole 210 through which the shaft body 20 can be inserted is formed in the shaft core portion of each positioning block body 21. In addition, the code | symbol 212 in FIG. 3 is a small diameter side end of the block body 21 for positioning.

  The retaining member 22 is formed in an annular shape from an elastic plastic material (e.g., elastomer) and is fixed to the loading portion 23 by friction. The retaining member 22 abuts against the peripheral edge of the insertion hole 210 at the small-diameter side end 212 of the positioning block body 21 to keep the positioning block body 21 from slipping out of the loading portion 23. Further, a nut 203 as a screwing member is screwed to the male screw portion 202. The retaining member 22 may be a donut plate-like member that covers almost the entire area of the small-diameter side end 212 of the positioning block body 21.

  A pair of rotation blocking pieces 26 for blocking the rotation of the shaft body 201 embedded in the concrete structure with the shaft core of the shaft body 201 as a fulcrum are located inward of the twisted groove 24 in the shaft body 201. It extends outward in the radial direction.

  Here, a case where the mold separator 2 is set between a pair of molds 27 and 27 will be described. One male screw portion 202 of the shaft body 20 is inserted into a through hole 271 provided in the molds 27 and 27. When the male screw portions 202 and 202 at both ends of the shaft body 20 are protruded outside the mold frames 27 and 27 and the nut 203 is screwed to both the male screw portions 202 and 202, the large-diameter side end of the positioning block body 21 is obtained. 211 is received by the inner end of the twisted groove 24 via the positioning member 25, and the small-diameter side end 212 of the positioning block body 21 comes into contact with the inner surface of the mold 27, and accordingly, the positioning block body The loading position 21 is restricted to a predetermined position, and the interval between the molds 27 and 27 is kept constant.

  On the other hand, when a concrete structure is formed between the molds 27, 27, first, the nut 203 is removed from the male screw portions 202, 202 at both ends of the shaft body 20, and the molds 27, 27 are replaced with the concrete structure. Remove from.

  Next, using a tool such as a pipe wrench provided with a clamping part capable of clamping the male screw parts 202 and 202 at both ends of the shaft body 20, the male screw part 202 is clamped by this tool and the male screw part 202 is Forcibly rotate around the axis. At this time, since the shaft main body 201 embedded in the concrete structure cannot be rotated by the rotation preventing piece 26, the male screw portion 202 rotates together with the loading portion 23 around the shaft main body 201 with respect to the shaft main body 201. Then, by the rotation of the male screw portion 202, the male screw portion 202 and the loading portion 23 are separated from the shaft main body 201.

  In this case, with the removal of the molds 27, 27, each positioning block body 21 remains embedded in the concrete structure, but each positioning block body 21 is formed of mortar M. Therefore, even if the small-diameter side end 212 is exposed to the outer surface of the concrete structure, it does not give a sense of incongruity, and the positioning block body 21 is integrated with the concrete structure well, so that the concrete structure It is possible to ensure sufficient strength of the outer surface. Then, after the male screw portion 202 and the loading portion 23 are removed, the insertion hole 210 of the positioning block body 21 is filled with mortar bond or a caulking agent to fill the insertion hole 210.

  4 is a plan view of the mold frame provided in the manufacturing apparatus 1 as viewed from above, FIG. 5 is a bottom view of the mold frame of the manufacturing apparatus 1 as viewed from below, and FIG. 6 is a mold frame of the manufacturing apparatus 1 The side view which looked at the body from the side is shown, respectively.

  In FIG. 4 to FIG. 6, reference numeral 3 denotes a mold-taking frame body in which a plurality of mold-taking frames 31, 31,... That individually mold the positioning block body 21 are arranged vertically and horizontally. The mold frame 3 is formed of a synthetic resin (for example, polypropylene) or the like. Each mold frame 31 is recessed from the base plate 30. Each of the mold frames 31 is arranged five by one in the vertical direction of the base plate 30 (vertical direction in FIGS. 4 and 5), and in the horizontal direction of the base plate 30 (horizontal direction in FIGS. 4 and 5). 8), a total of 40 positioning block bodies 21 can be individually molded. Further, the mold taking frames 31, 31 adjacent to each other of the mold taking frame body 3 are connected by a rib 34 protruding from the back surface of the base plate 30. In this case, each rib 34 is omitted in FIG.

  A through-hole portion 32 penetrating the bottom portion is provided at the bottom portion of each mold taking frame 31 where the small-diameter side end 212 of the positioning block body 21 is located. The leading end (front end in FIG. 5) of the core member 33 having a diameter substantially matching the insertion hole 210 of the positioning block body 21 is inserted into the through-hole portion 32, thereby covering the through-hole portion 32. To be closed.

  7 is a plan view of the core loading jig provided in the manufacturing apparatus 1 as viewed from above, FIG. 8 is a bottom view of the core loading jig as viewed from below, and FIG. The side view which looked at the core loading jig from the side, FIG. 10 has each shown the perspective view which looked at the core loading jig of the manufacturing apparatus from diagonally upward.

  In FIGS. 7 to 10, a core loading jig 4 is interposed between the empty mold frame 3 installed in the installation basket 17 and the mold frame 3 that is used. The core loading jig 4 is formed of a light metal (for example, aluminum) or the like, and includes a plurality of convex pieces 41, 41,... Protruding from the rear surface of the substantially rectangular base plate 40, respectively. Each of the convex pieces 41 is arranged five by five in the vertical direction (vertical direction in FIGS. 7 and 8) of the base plate 40 and 8 in the horizontal direction of the base plate 40 (horizontal direction in FIGS. 7 and 8). They are arranged one by one.

  The protruding pieces 41, 41 adjacent to each other in the longitudinal direction of the base plate 40 of the core loading jig 4 are connected by a rib 44 protruding from the back surface of the base plate 40. Further, rib pieces 46, 46,... Projecting from three places at equal intervals in the horizontal direction are provided at both longitudinal ends of the back surface of the base plate 40. Each rib piece 46 projects the same amount as each rib 44. And each convex piece 41 of the core loading jig 4 is accommodated inside each mold taking frame 31 of the empty mold taking frame 3, and at that time, the base plate 30 of the empty mold taking frame 3 Each rib 44 and each rib piece 46 of the core loading jig 4 are in contact with the surface. At this time, each convex piece 41 is accommodated in a loosely fitted state with respect to each mold frame 31 of the empty mold frame 3, and there is a space between the tip and the bottom of each mold frame 31. Yes.

  FIG. 11 is an explanatory diagram for explaining a filling process for filling each mold frame 31 of the mold frame 3 of the manufacturing apparatus 1 with mortar M. FIG.

  As shown in FIG. 11, mortar M is filled in each mold taking frame 31 of the mold taking frame 3 from around the base end (front end in FIG. 3) of the core material 33, and the mortar M is cured. By doing so, the positioning block body 21 is obtained. In this case, the mold frame 3 in which the mortar M is cured in each mold frame 31 is referred to as a mold mold frame 3 that is filled, and the mold frame 3 that is not filled with the mortar M is an empty mold frame 3. Called.

  FIG. 12 is an explanatory diagram for explaining an installation process for installing an empty mold frame 3 and a built-in mold frame 3 in the manufacturing apparatus 1.

  As shown in FIG. 12, when the mold frame 3 is put on the mounting table 11 of the manufacturing apparatus 1, the base plate 30, In a state where the upper and lower portions 30 are turned upside down so as to overlap each other, the respective mold taking frames 31 and 31 are placed so as to coincide with each other in the vertical direction. In addition, the installation car 17 has its front end abutted while the left and right ends are guided by three guide pieces 111 provided on the mounting table 11 (only two of the right end and the front end are shown in FIGS. 1 and 2). Are positioned below the elevator 14 for raising and lowering the core rods 142, 142,... Slightly smaller than the diameter of the core member 33 of each mold taking frame 31, and the tips of the core rods 142 are used as molds. The frame 3 is installed so as to face the core material 33 of each mold frame 31. In this case, the installation basket 17 is formed in a thin box shape, and the upper surface and the rear surface thereof are opened, and the base plate of the mold mold frame 3 and the empty mold frame frame 3 that are worn with respect to the left and right side surfaces and the front surface. 30 are slidably contacted and are held incapable of positional displacement.

  FIG. 13 is an explanatory diagram for explaining an injection preparation / acquisition step for lowering each core rod 142 of the elevator 14 with respect to each core member 33 of the dressed frame 3 of the manufacturing apparatus 1.

  As shown in FIG. 13, when the installation cage 17 is positioned below the elevator 14 in each convex piece 41 of the core loading jig 4, each convex piece 41 of the core loading jig 4 is empty. The core of each mold frame 31 of the mold frame 3 that is contained by the core rod 142 that descends as the elevating body 141 moves downward while being accommodated in each mold frame 31 of the mold frame 3. When the material 33 is pushed down, guide paths 42 are provided for guiding the core material 33 of each of the mold frame 31 toward the through-hole portion 32 of each mold frame 31 of the empty mold frame 3. Yes. Each guide path 42 has a distal end side portion (a lower end side portion in FIGS. 12 and 13) having a diameter substantially matching the through-hole portion 32 of each mold taking frame 31 of the mold taking frame body 3. It is formed in a tapered shape that slightly expands in diameter as it approaches.

  Further, the base plate 40 of the core loading jig 4 is provided with a receiving portion 43 in which the proximal end side of each guide path 42 is stepped and diameter-expanded. Each receiving portion 43 is formed to have a diameter slightly larger than the diameter of the large-diameter side end 211 of each positioning block body 21. Each of the receiving portions 43 is recessed to a depth of several millimeters from the surface of the base plate 40 (side surface of the anti-convex piece 41). The large-diameter side end 211 of the positioning block body 21 that is pushed out and separated from the mold taking frame 31 is received. 7 and 8 is a handle for gripping the core loading jig 4.

  14 is a cross-sectional plan view in which the mold frame 31 of the empty mold frame 3 shown in FIG. 12 is cut in the vicinity of the through-hole portion 32. FIG. 15 shows the mold frame 31 of the empty mold frame 3 shown in FIG. The cross-sectional plan view cut | disconnected in the through-hole part 32 vicinity is shown, respectively.

  As shown in FIGS. 14 and 15, the core material 33 and the peripheral surface of the through-hole portion 32 when the core material 33 is pushed down from each mold frame 31 of the molded mold frame body 3. Are provided with a plurality of ribs 321, 321,... Projecting radially inwardly at equal intervals in the circumferential direction so as to reduce the contact area. These ribs 321, 321,... Extend in the axial direction near the substantially central portion of the through-hole portion 32. In this case, each rib 321 reduces friction because only the tip (radially inner end) contacts the core material 33 pushed down from each mold frame 31 of the mold mold frame 3 that is included, The core material 33 is smoothly inserted and removed from the through hole portion 32 of each mold taking frame 31 so that the core material 33 can be easily set at the center of the through hole portion 32 of each mold taking frame 31.

  Next, a procedure for manufacturing the positioning block body 21 by the manufacturing apparatus 1 will be described with reference to FIGS.

  First, as shown in FIG. 11, as a filling process, an empty mold frame 3 in which 40 mold frames 31, 31,... For individually molding the positioning block body 21 are arranged vertically and horizontally. , And a core member 33 having a diameter substantially matching the insertion hole 210 of the positioning block body 21 with respect to the through-hole portion 32 at the bottom of each mold taking frame 31 where the small-diameter side end 212 of the positioning block body 21 is located. The mortar M is filled from the periphery of the base end of the core material 33 into each mold taking frame 31 in a state where the tip of the core is inserted and the lid is capped. At this time, prior to filling the mortar M in each mold taking frame 31, an oily release agent may be applied in advance to the inner peripheral surface of each mold taking frame 31 and the periphery of each core member 33.

  Then, it waits for about 1 to 2 days until the mortar M is completely cured in each mold frame 31 of the molded mold frame 3 filled with the mortar M.

  After that, as shown in FIG. 12, as an installation process, an empty mold frame 3 is set on an installation basket 17 placed on the mounting table 11 of the manufacturing apparatus 1, and the empty mold frame 3 is placed on the empty mold frame 3. In a state where the base plates 30 and 30 are turned upside down so as to overlap with each other, the dressed frame 3 is placed so that the mold frames 31 and 31 are aligned with each other in the vertical direction.

  At this time, the core loading jig 4 is interposed between the empty mold frame 3 and the worn mold frame 3. Specifically, in the state where the ribs 44 of the core loading jig 4 are sandwiched between the base plates 30 and 30 of the empty mold frame 3 and the used mold frame 3, the core Each convex piece 41 of the loading jig 4 is accommodated inside each mold taking frame 31 of the empty mold taking frame 3.

  After that, each guide piece on the mounting table 11 is placed on an installation basket 17 placed in a state where the core loading jig 4 is interposed between the empty mold frame 3 and the worn mold frame 3. The front end of each core member 142 is positioned below the elevator 14 by guiding the left and right ends thereof while being guided by 111, and the core material of each mold frame 31 of the mold frame 3 that contains the core rod 142 is positioned. 33 so as to face each other.

  Thereafter, as shown in FIG. 13, as the injection preparation / acquisition step, each core rod 142 of the elevator 14 is attached to the core 33 of each mold frame 31 of the mold frame 3 installed in the installation step. The core material 33 of each mold frame 31 of the mold mold frame 3 is pushed out from the through-hole portion 32 of each mold frame 31, and each mold pattern of the empty mold frame frame 3 below is pushed down. The tips are inserted through the through-hole portions 32 of the frame 31.

  At this time, an injection preparation state is obtained in which the mortar M can be injected into each mold frame 31 from around the base end of each core member 33 of the empty mold frame 3, and the dressed mold frame The positioning block body 21 pushed out by the pushing operation of the core member 33 pushed out from each of the three mold taking frames 31 is received by a receiving portion 43 that is recessed from the surface of the base plate 40.

  As described above, when the mortar M filled in each mold frame 31 of the empty mold frame 3 is cured, the loaded mold frame 3 filled with the mortar M is turned upside down. After placing the empty mold frame 3 on the installation car 17 placed on the table 11, the base plate 40 of the core loading jig 4 is sandwiched between the base plates 30 of the empty mold frame 3. The base plate 30 is placed so that the mold taking frames 31 are aligned in the vertical direction. The installation cage 17 is positioned below the elevator 14 by abutting the front end while guiding the left and right ends by the guide pieces 111 on the mounting table 11, and the tip of each core rod 142 is shaped as a mold. The frame 3 is installed so as to face the core material 33 of each mold taking frame 31. Then, the core rods 142 of the elevator 14 are lowered with respect to the core members 33 of the dressed frame 3, and the through holes 32 of the mold frames 31 of the dressed frame 3 are used. Each of the core members 33 is extruded, and the positioning block body 21 is extruded and acquired along with the pushing operation of each of the core members 33. As a result, when the positioning block body 21 is released from each mold taking frame 31 of the mold taking frame 3, the elevator 14 can be moved without applying an impact to the core member 33 of each mold taking frame 31 with a hammer or the like. When the core bar 142 is lowered, the positioning block body 21 is easily removed from the mold frame 31 in accordance with the pushing operation of the core material 33 of the mold frame 31 of the mold frame 3 that is worn. It can be smoothly separated from the core material 33 while being released.

  In addition, each core material 33 of the dressed frame 3 is pushed out from the through hole 32 of each mold frame 31 and is inserted into the through hole 32 of each mold frame 31 of the empty mold frame 3. , And an injection preparation state in which the mortar M can be injected into each mold frame 31 from around the base end of each core member 33 of the empty mold frame 3 is obtained. Each positioning block 21 is obtained by pushing out and acquiring the positioning block body 21 in accordance with the pushing operation of the core member 33 pushed out from the through-hole portion 32 of each mold taking frame 31 of the mold taking frame 3. The core material 33 pushed out from the through-hole portion 32 of the take-up frame 31 is inserted into the through-hole portions 32 of the respective mold take-up frames 31 of the empty mold take-up frame body 3 so that the injection preparation state in which the mortar M can be injected quickly and quickly. The positioning block 21 can be obtained efficiently. It can be greatly shortened granulation process.

  Further, in the installation process, the guide of each convex piece 41 of the core loading jig 4 in which the base plate 40 is sandwiched between the base plates 30 and 30 of the empty mold frame 3 and the used mold frame 3 is shown. The cores 33 that are pushed out of the mold frames 31 of the molded mold frame 3 by the descending of the core bars 142 of the elevator 14 by the path 42 are separated from the mold frames 3 of the empty mold frame 3. Since each guide is guided by the through-hole portion 32 of the frame 31, the core material 33 pushed out from each mold taking frame 31 of the mold casting frame 3 is inserted into each mold taking frame 31 of the empty mold taking frame 3. Each of the through holes 32 can be guided smoothly and reliably. Further, the positioning block body 21 which is pushed out from each mold frame 31 of the molded mold frame body 3 and separated by the receiving portion is received together with fine fragments, and the positioning block body is released from each mold frame 31. 21 can be smoothly delivered, and it is possible to surely prevent debris from being mixed into the mortar M injected into each mold frame 31 of the empty mold frame 3 that has been prepared for injection. it can.

  Further, as the guide path 42 of each convex piece 41 of the core loading jig 4 approaches the base end from the tip end having a diameter that substantially matches the through-hole portion 32 of each mold take frame 31 of the empty mold take frame 3. Since it is formed in the taper surface which expands in diameter, the core material 33 pushed out from each mold-carrying frame 31 of the mold-carrying frame body 3 by the descending of each core-material bar 142 of the elevator 14 is made into each convex. The base 41 whose diameter is expanded relative to the guide path 42 of the piece 41 is guided without difficulty and is smoother with respect to the through-hole portion 32 of each mold frame 31 of the empty mold frame 3 by the diameter-reduced tip. And it can guide reliably.

  In addition, this invention is not limited to the said embodiment, The other various modifications are included. For example, in this embodiment, the core loading jig 4 is interposed between the empty mold frame 3 and the worn mold frame 3, but the empty mold frame and The core loading jig may not be interposed between the mold frame and the mold frame. Even in this case, when releasing the positioning block body from each mold frame and each core material of the mold frame body, when the core rod of the elevator is lowered, With the pushing operation of the core material of each mold taking frame, the positioning block body can be easily separated from the core material while being easily released from each mold taking frame. Moreover, the cores pushed out from the through-holes of each of the mold-fitting frames at the same time are obtained by pushing out the positioning block bodies in accordance with the pushing-out operation of the core material pushed out from the through-holes of the respective mold-fitting frames. It is also possible to obtain a mortar injection preparation state quickly and efficiently by inserting the material through the through-hole portion of each mold frame of an empty mold frame.

  Further, in the present embodiment, each of the mold taking frames 31 is arranged in the vertical direction of the base plate 30, and eight in the horizontal direction of the base plate 30, for a total of 40 positioning block bodies 21. However, the number of mold frames is not limited to this, and the same applies to the number of arrangements in the vertical and horizontal directions. Moreover, what is necessary is just to change also about the number of arrangement | sequence of the vertical direction of the convex piece of a core loading jig | tool, and a horizontal direction according to each mold-taking frame of a mold-taking frame body.

  Furthermore, in this Embodiment, although the raising / lowering body 141 was raised / lowered by expansion / contraction of the piston rod of an air cylinder, you may make it raise / lower the raising / lowering body by the fluid pressure cylinder extended / contracted by fluid pressures, such as hydraulic pressure.

14 Elevator 142 Core Bar 2 Formwork Separator 201 Shaft Body 202 Male Threaded Section 203 Nut (Screw Member)
21 Positioning block body 210 Insertion hole 212 Small-diameter side end 27 Mold frame 3 Molding frame body 31 Molding frame 32 Through-hole part 33 Core material 4 Core loading jig 41 Convex piece 42 Guide path 43 Receiving part M Mortar

Claims (3)

In a separator for a formwork that maintains a constant distance between the formwork facing each other by screw members that are screwed into male threaded parts at both ends in the length direction of the shaft body, A manufacturing method of a positioning block body having a substantially frustoconical shape that is inserted and mounted so that the small-diameter side ends abut on the inside of the mold frame,
A bottom part of each of the mold taking frames on which a small-diameter side end of the positioning block body is located, using a mold taking frame body in which a plurality of mold taking frames for individually molding the positioning block bodies are arranged vertically and horizontally. In this state, the ends of the core material having a diameter substantially matching the insertion hole of the positioning block body are inserted and covered, and in this state, the core material is inserted into each mold taking frame. Filling process of filling mortar from around the proximal end;
After the mortar filled in each mold frame in the filling step is cured, an empty mold frame having the same shape as the mold mold frame filled with the mortar is turned upside down. The core rods are placed below the elevator to move up and down the core rods substantially matching the diameter of the core members of the mold trim frames. An installation step of installing the tip of the mold mold frame so as to face the core material of each mold frame of the molded mold frame body,
The core rod of the elevator is lowered with respect to each core material of the dressed frame body installed in the installation step, and each core material of the dressed frame body is moved to the core frame of the mold frame body. A mortar is pushed out from each through-hole portion and inserted into each through-hole portion of the empty mold-receiving frame body, and the mortar is placed around the base end of each core member of the empty mold-receiving frame body into each mold-receiving frame. Injecting preparation for obtaining and injecting each of the positioning block bodies in accordance with the extruding operation of the core material extruded from each mold taking frame of the dressed mold taking frame. Acquisition process;
The manufacturing method of the block body for positioning of the separator for a formwork characterized by comprising. Protruding pieces respectively accommodated in the interior of each mold frame of the empty mold frame are provided between the empty mold frame and the dressed frame in the installation step. A core loading jig is interposed,
The core loading jig is
Provided inside each convex piece and guides the core material pushed out from each mold frame of the dressed mold frame in the installation step to each through-hole portion of the empty mold frame. A guideway,
A receiving portion for receiving the positioning block body, which is provided on the proximal end side of the guide path, and is separated from the mold frame of the dressed mold frame by being pushed out by the core material;
The manufacturing method of the block body for positioning of the separator for formwork of Claim 1 provided with each.   The guide path is formed in a tapered surface that increases in diameter as it approaches the base end from a distal end side portion having a diameter substantially coinciding with each through hole portion of the empty mold frame. The manufacturing method of the block body for positioning of the separator for formwork of description.

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