JPH11172925A - Anchor pin for repairing external wall of building and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an anchor pin rich in durable strength and a mass producing effect made of one piece of metal sheet material. SOLUTION: An outflow hole 22 for an adhesive and an expanding slot 15 to open its head end part are cut out on a longitudinal central line Y-Y of a metal sheet material which is nearly rectangular in an expanded state, a pair of symmetrical recessed cutouts 23a to be another outflow hole 23 for the adhesive is added at the time of winding and solidifying both longer sides of the sheet material as closed lines 16, and another pair of outflow holes 20, 21 for the adhesive and dowels 18, 19 for falling stop of a plug 10 are projected at symmetrical positions sandwiching the central line of the sheet material. Thereafter, an irregular wire 17 for chamfering to a concrete building frame is formed in a waveform to cross with the expanding slot on a head end part of the sheet material in the longitudinal direction, a base end part in the longitudinal direction on the sheet material is bent out at a cross-over angle θroughly rectangular in the opposite direction of the dowels as a presser flange 12 for floating prevention of an external wall as well as for contraflow prevention of the adhesive, and the sheet material in an expanded state is formed in a roughly cylindrical shape by winding and solidifying it around its central line.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anchor pin for repairing an outer wall of a building and a method of manufacturing the same.

[0002]

2. Description of the Related Art In general, the mortar outer wall is used for repairing the outer wall of a building to prevent the mortar outer wall from rising and swelling over time from the concrete body and to be deformed so as to expand (so-called swelling phenomenon). In order to mechanically fix the anchor to the concrete frame, various cylindrical anchor pins, each of which has an expansion plug inserted and set inside the hollow, are used.

[0003] In other words, in advance of its use, into the inside of the prepared hole drilled from the outer wall of the mortar to the concrete frame,
First, the anchor pin is embedded, and the expanding plug is hit to expand the anchor pin from the front end side, so that the anchor pin is bitten and fixed to the concrete frame.

[0004] Next, an adhesive such as a wet-curable epoxy resin is injected into the hollow of the anchor pin, and the adhesive is injected into the hollow of the anchor pin from the hollow of the anchor pin to the lower hole or the outer wall of the mortar by injection pressure. By flowing and spreading to the gap between the concrete skeleton (the floating part of the outer wall) and the synergistic effect of the adhesive force and the biting force of the anchor pin, the mortar outer wall is prevented from rising and expanding or coming off. Has become.

Among the various types of anchor pins into which an adhesive can be injected, the only one shown in FIGS. 53 to 57 is the only one that is practically used as a product finished from a metal plate into a substantially cylindrical shape. is there.

This conventional anchor pin is formed by pressing a metal plate into a semi-cylindrical shape, and a pair of identical half halves (1L) and (1R) facing each other, and both half halves (1R).
L) An injection port cylinder (2) for a synthetic resin material adhesively welded and integrated to cover the outer peripheral surface and the inner peripheral surface at the base end of (1R). The two halves (1L) and (1R) are assembled and fixed in an overall cylindrical shape via (2).

In addition, the base end side of the inlet cylinder (2) is smoothly curved as an outwardly expanding conical flange portion (2a) adapted to the base end sides of the two halves (1L) (1R). On the other hand, the distal end side of the inner peripheral surface of the injection port cylinder (2) also serves as a stop step portion (2b) to prevent the expansion plug (3) from falling off toward the base end side of the anchor pin. I have.

[0008] (4) is a concave and convex strip for biting the concrete body (C) corrugated at the tip of both halves (1L) and (1R), and (5) is also a double halved body (1L). )
The expanding recess notched at a predetermined length (L) along the crevice while being located at the tip of (1R), (6) remaining both halves (1L) and (1R) It is needless to say that there are a plurality of outflow holes for adhesive distributed in the middle portion, and one pair of the outflow holes faces each other.

[0009]

However, in the anchor pin having the above structure, the two halves (1L) and (1R) are assembled as two independent pieces by the injection port cylinder (2) for synthetic resin material. Since the product is an integrated product, a part of the injection port cylinder (2) has a through hole (1L) (1R) which is open facing the base end of the half body (1L) (1R) as is clear from FIG. 7), even if the two halves (1L) and (1R) are forcibly expanded from the distal end side by hitting the expansion plug (3), even if the insertion and welding state is fixed and maintained.
Cracks are easily formed in the inlet cylinder (2) from the cracks, and it is inevitable that the durability of the anchor pin is reduced.

Further, the base end side of the two half-pieces (1L) and (1R) integrally attached to the injection port cylinder (2) has a conical shape having a smooth outer spread as a flange portion (2a). 57, and the flange portion (2a) is embedded and fixed in a state of being immersed into the prepared hole (H) from the surface of the mortar outer wall (M), as is apparent from the use state of FIG. It is difficult for the flange portion (2a) to seal the backflow and overflow of the adhesive (B) to the base end along the prepared hole (H) under the injection pressure.
Moreover, it is impossible at all to prevent the mortar outer wall (M) from being deformed so as to rise and expand by the flange portion (2a).

As a countermeasure, the flange portion (2)
It is conceivable that a) protrudes from the base end side of the injection port cylinder (2) at a large angle and substantially at a right angle. If the material is greatly bent and deformed, there is no danger that the injection port cylinder (2) made of a synthetic resin material that cannot withstand the tensile force may fall out of the two halves (1L) and (1R).

Further, the method of manufacturing the anchor pin is not limited to the sheet metal press working of the two halves (1L) and (1R), and the processed facing pair is continuously and accurately combined to form the injection port cylinder (2). )) Into the molding die, and by pouring a synthetic resin material into the die, simultaneously with the molding and hardening of the injection port cylinder (2), the two halves (1L)
Since (1R) must be fixedly integrated, it is not possible to automate the production process, and it is not possible to exert the effect of mass-producing such a large amount of anchor pins.

[0013]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an anchor pin for repairing an outer wall of a building, which is arranged on a longitudinal center line of a substantially rectangular metal plate material in a developed state in its configuration. When the outflow hole for the adhesive and the split groove for opening at the tip are cut out, and the long side parallel to the metal plate is also bent and solidified by winding both long sides of the metal plate as closed lines. A pair of symmetrical recesses serving as another adhesive outflow holes are provided, and a pair of other adhesive outflow holes and a plug for preventing the plug from coming off are provided at symmetrical positions sandwiching the longitudinal center line of the metal plate material. Along with distributing a pair of inwardly projecting dowels, the front end of the metal plate in the longitudinal direction is provided with a concave / convex strip for biting into the concrete frame, and the expanding groove. While it is shaped like intersecting waves, The base end in the longitudinal direction is bent almost at a right angle in a direction opposite to the inward dowel as a holding flange for preventing the backflow of the adhesive and for preventing the floating of the outer wall. It is characterized by being formed into a substantially cylindrical shape by winding and bending around the longitudinal center line to form a three-dimensional shape.

In order to manufacture the anchor pin,
As an automatic press working in the process of punching a pair of positioning pilot holes at the left and right ends of a long metal plate material with a constant band width, and intermittently feeding the metal plate material at a constant pitch of the pilot holes,

First, either one of the left and right sides of the metal plate material is cut into a substantially U-shape in plan view in which one side edge is opened and one of the pilot holes is removed. As a notch hole, by partially punching the contour, the processing die in the subsequent process is kept cantilevered by the other pilot hole until the end, and one side edge of the contoured metal plate material is continuously As a holding flange for preventing backflow of the adhesive and for preventing the rising of the outer wall, it is bent at a substantially right-angled crossing angle, and secondarily, the other side of the metal plate is secondarily formed with the U-shaped cutout hole. As a substantially T-shaped notch hole in plan view communicating with the metal plate material, it is connected to the metal plate material through a small number of support legs, and is also partially contoured. Shape the crude plate having the overall development profile of goods,

Thereafter, the rough plate is sequentially bent in a stepwise manner so as to form a cylindrical shape in which the holding flange projects outward, and as a pre-process before the bending process is started,
On one side of the metal plate material, a dowel protruding process that results in an inward direction for retaining the plug and a punching process of at least two sets of four outflow holes for the adhesive that are interspersed and distributed as a total of four. At the same time, on the other side of the other side, cut the groove for expansion and corrugate the corrugated strip for the concrete body,

The first feature is that the support leg of the crude plate bent into the cylindrical shape is finally cut off from the metal plate material to thereby dimension it to a fixed length.

Also, a pair of positioning pilot holes are punched at both left and right ends of a long metal plate having a constant band width,
As an automatic press working in the process of intermittently feeding the metal plate at a constant pitch of the pilot hole,

First, either one of the right and left sides of the metal plate is partially cut out as a substantially T-shaped cutout hole in plan view, and then the metal plate is secondarily formed. The other side of the pilot hole communicates with the T-shaped notch hole and is formed as a substantially U-shaped notch hole in a plan view in which one side edge is opened, and the other portion of the pilot hole is removed. By performing contour contouring, the working mold in the subsequent process is maintained in a cantilevered state by one of the pilot holes to the end, and is continuously connected to the metal plate material through a small number of supporting legs, and the entire product is formed. A rough plate having a wide developed contour shape is formed, and then the other side edge of the rough plate is formed as a substantially right-angled pressing flange for preventing backflow of the adhesive and for preventing floating of the outer wall. Bending processed into or angle,

Subsequently, the crude plate is sequentially bent in a stepwise manner so as to form a cylindrical shape whose holding flange projects outward. As a pre-process before the bending process is started, one side of the metal plate material is bent. On one side of the groove, cut the groove for expansion and corrugate the ridges and bites on the concrete frame, and on the other side, the dowels that turn inward to prevent the plug from coming off And a punching process of adhesive outflow holes that are scattered and distributed as a total of four at least two sets,

The second feature is that the support leg of the crude plate bent into the cylindrical shape is finally cut off from the metal plate material to thereby make it sized to a certain length.

[0022]

1 to 10 show a finished product of an anchor pin (P) according to the present invention, FIG. 11 shows its expanded state, and FIGS. 12 to 16 show a building using the anchor pin (P). Respectively shows the outer wall repair work process.

The anchor pin (P) of the present invention can be formed only by pressing a stainless steel plate (SUS304) having a certain thickness (T1) (for example, about 0.8 mm) or other non-rusting metal plate material by pressing only the mortar outer wall (M). )) To a substantially cylindrical shape having a certain length (L1) (for example, about 50 mm) that can reach the required depth of the concrete skeleton (C) and a certain outer diameter (D1) (for example, about 6 mm). A tapered conical or bullet-shaped expanding plug (10) made of the same material is inserted and set in the hollow interior of the coil.

However, since the thickness (T) of the mortar outer wall (M) of the building actually varies, the length (L1) of the anchor pin (P) penetrating the outer wall (M) is also
Various types of long and short according to the thickness change are selectively used.

FIGS. 17 and 18 show the length (L1).
6 shows a different anchor pin (P) having a relatively long length, but when the length (L1) is changed in length during manufacture, as apparent from comparison with FIGS. Only the length (L2) of the pin (P) from the inward dowel for retaining the plug, which will be described later, on the base end side may be changed according to the thickness (T) of the mortar outer wall (M).

In any case, the base end of the anchor pin (P) forms an adhesive injection port (11), and from that position, a crossing angle (θ) that is substantially perpendicular to the body surface is established.
A large-diameter circular pressing flange (12) for preventing backflow and overflow of the adhesive (B) and floating and expansion of the mortar outer wall (M) is continuously and integrally bent.

Outer diameter (D2) of the holding flange (12)
Is about 8.5 mm, for example, and the opening edge of the adhesive injection port (11) has a conical shape that expands outward. The nozzle (14) of the adhesive injection pump (13) or its connection adapter (illustrated) (Omitted) can be accepted smoothly.

On the other hand, on the longitudinal center line (YY) of the anchor pin (P) in the unfolded state, as is apparent from FIG. 11, a fixed length (L3) from its tip (for example, about 2 mm).
The expansion groove (15) is cut by an amount of 0 mm). As can be seen from FIGS. 9 and 10, the split groove (15) is an anchor pin (P) wound into a cylindrical shape and bent three-dimensionally.
And extends as parallel lines to each other.

(17) is an uneven strip for biting the concrete body (C), which is also corrugated by a predetermined length (L4) (for example, about 12 mm) from the tip of the anchor pin (P). The inner diameter (d) of the concave peripheral ridge (17a) is, for example, about 3.4 mm, and is smaller than the outer diameter (D3) of the expanding plug (10).

Therefore, there is no possibility that the plug (10) falls off toward the tip end of the anchor pin (P). The outer diameter (D3) of the plug (10) is, for example, about 4.2 mm, and the length (L5) is, for example, about 14 mm.

Moreover, when the plug (10) is hit, the anchor pin (P) is moved from the front end side of FIG. 14 by the opposing split groove (15) and the closing line (16) on the body surface. As a result, the convex ridges (17b) of the ridges (17) exert a biting frictional force on the concrete skeleton (C).

In this case, in the illustrated embodiment, the concave peripheral ridge (17a) and the convex peripheral ridge (17b) of the concave and convex ridge (17) are formed in an annular shape orthogonal to the longitudinal center line (Y-Y). However, they may be arranged in a continuous spiral form obliquely intersecting the longitudinal center line (Y-Y).

(18) and (19) are dowels for preventing the plug (10) from falling off toward the opposite base end side of the anchor pin (P) from the middle of the body surface of the anchor pin (P). It is protruded inward as a pair facing each other. Moreover, a pair of dowels (1
8) and (19) are distributed at symmetrical positions sandwiching the longitudinal center line (Y-Y) when the anchor pin (P) is deployed as shown in FIG.

Reference numerals (20), (21), (22), and (23) denote at least two sets of four outflow holes for the adhesive, which are also distributed in the middle part of the body surface of the anchor pin (P). Like the inward dowels (18) and (19) for preventing the plug from slipping out, the pair of outflow holes (20) and (21) has a longitudinal center line (Y-Y) in a deployed state at the anchor pin (P). Facing the symmetrical position sandwiching.

Then, the remaining pair of two outflow holes (22)
(23) is on the longitudinal center line (Y-Y) and the closing line (both long sides of the metal plate parallel to the longitudinal center line) (16)
It is open at the top and the two opposite ones are shown in FIGS.
As described above, the pair of outflow holes (20) (21)
In a radially symmetric distribution state orthogonal to. Moreover, the two sets of outflow holes (20) to (23) are opened so as to be displaced along the longitudinal direction of the anchor pin (P) so as to sandwich the inward dowels (18) and (19) for retaining the plug. They are also distributed.

Therefore, the adhesive (B) injected into the hollow through the adhesive inlet (11) opened at the base end of the anchor pin (P) is supplied to the outlet holes (20) to (2).
From 3), it can be discharged to the periphery of the body surface quickly and uniformly over a wide range in each direction. When the length (L1) of the anchor pin (P) is long, as apparent from FIGS. 17 and 18, the adhesive outflow holes (20) to (2) are used.
The number of aperture sets in 3) may be increased as a positional relationship that is alternately orthogonal. Each of the outlet holes (20) to (23) is preferably opened in a rectangular or elliptical shape of, for example, about 6 mm × 2 mm.

Since the anchor pin (P) of the present invention is a product made of a one-piece stainless steel plate or other metal plate as described above, an automatic press using both an automatic feeder and a multi-stage continuous type (progressive type) is used. By processing, mass production can be performed very efficiently.

That is, FIG. 19 shows a series of manufacturing steps in the present invention. In manufacturing the anchor pin (P), a long metal having a constant thickness (T1) and a band width is used. The sheet material (blank) (W) is sequentially fed in the direction of the arrow (A) in the same figure along a straight line by a roll feed or other automatic feeder (not shown). Various processes in the following first to twelfth steps (I) to (XII) are performed.

Reference numerals (24) and (25) in FIGS. 19 and 20 denote a pair of positioning pilot holes punched out at the left and right ends of the metal plate (W) immediately before the first step (I). Pre-machined pilot hole (24)
By inserting a process punch (not shown) of each processing die into and out of (25) so that it can be freely inserted and removed, the metal plate material (W) is properly positioned and stopped by itself, and the pilot holes (24) and (25) are formed. Is intermittently forwarded intermittently as the pitch (F) of the metal plate material (W).

First, in the first step (I), FIGS.
As is clear from FIG. 22, a pair of left and right preliminary punched holes (26) (2) are formed on the left side of the metal plate material (W) by the first processing die.
7) and a pair of front and rear dowels (18) and (19) are also projected upward on the right side of the metal plate (W). The preliminary holes (26) and (27) correspond to the primary processing for smoothly and correctly cutting the expanding split groove (15) having a fixed length (L3). The dowels (18) and (19)
Is used to prevent the anchor pin (P) from being pulled out of the plug, so that it is projected inward by winding and bending into a cylinder in a later step.

Next, in the second step (II), FIGS.
As is clear from 24, at least three adhesive outflow holes (20), (21), (22) are punched out to the right side of the metal plate (W) by the second processing die. Out of the three total holes, a pair of outflow holes (20) and (21) are aperture-distributed as a pair of front and rear parallel to the positions corresponding to the dowels (18) and (19), and one remaining outflow hole ( 22) is to form another set, and the pre-drilled hole (26)
An opening is arranged on an imaginary extension line (a longitudinal center line of a rough plate described later) connecting a pair of right and left of (27).

In the succeeding third step (III), as a primary outline punching (shaping) process of the anchor pin (P), FIG.
9, 25, 26, the pilot hole (2) opening at the right end of the metal plate (W) in advance.
5) Remove the right side of the metal plate (W)
By the processing die, the right side edge is cut out and separated in a substantially U-shape in a plan view opened.

In this case, the U-shaped cutout hole (28)
The inner concave portion is formed as a pair of front and rear concave portions (23a) facing each other, and is removed to have a width wider than the entrance portion.
3a) is closed, and another set of one adhesive outflow hole (23) is formed as a separate set from one of the adhesive outflow holes (22) punched in the second step (II). Prepare to be formed.

In the primary contour cutting in the third step (III), the pilot hole (25) opened at the right end of the metal plate (W) is removed in advance. The three-working mold also has a so-called cantilevered state only at the pilot hole (24) opened at the left end of the metal plate material (W), and this state is the same in the subsequent subsequent steps. When performing the various processes in III) to (VIII), the adhesive outflow holes (22) punched out in the second step (II)
May be used as a pilot hole (25) opened at the right end of the metal plate material (W), so that the working mold in each step may be maintained in a double-supported state.

At the time of the contour cutting in the third step (III), as shown in FIGS.
The right side edge of is notched in a stepped state with a certain band width. This is because even if the metal plate material (W) has a warp habit or a band width variation, the holding flange ( 12) is intended to be able to be bent with high precision. Therefore, if there is no variation in the metal plate material (W), it is not necessary to cut out the metal plate material (W) in a narrow step with a constant band width.

Then, in the next fourth step (IV), the first step
Pre-drilled holes (26) (2) opened in step (I)
While utilizing the above 7), the left and right sides of the pre-drilled holes (26) and (27) are cut into a communicating state by a fourth processing die, and only a predetermined length (L3) as shown in FIGS. It is arranged in a row as one extending split groove (15).

Since the right side of the metal plate (W) is partially separated with the contour shape of the anchor pin (P) by the contour punching in the third step (III), the subsequent fifth step In (V), as is clear from FIGS. 19, 29 and 30, the right side edge of the metal plate (W) can be flanged without any trouble by the fifth processing die.

That is, the right side edge of the metal plate material (W) is bent downward at a substantially right-angled crossing angle (θ) with the downward direction opposite to the dowels (18) and (19) in the first step (I). Thus, a holding flange (12) for preventing the adhesive (B) from flowing back and for preventing the mortar outer wall (M) from lifting up is formed. The holding flange (1
2) results in overhanging outwardly by winding and bending into a cylinder in a later step.

Next, in the sixth step (VI), FIGS.
32, as a secondary contour punching (shape punching) processing of the anchor pin (P), a substantially T in plan view communicating with the U-shaped cutout hole (28) in the third step (III). A character-shaped notch hole (29) is punched and opened by the sixth processing die on the left side of the remaining metal plate material (W) so that the contour shape of the anchor pin (P) is separated even in the remaining portion. By keeping the narrow supporting legs (30) at the left end, a crude plate (P1) of the anchor pin (P) is formed, as shown in FIG. 33, which is still continuous with the metal plate (W).

The rough plate (P1) has a substantially rectangular shape in plan view corresponding to the deployed state of the anchor pin (P) shown in FIG. 11, and has a fixed length (L1). And
On the longitudinal center line (Y-Y), a single splitting groove (15) having the predetermined length (L3) extends.

When the rough plate (P1) of the anchor pin (P) is separated from the metal plate (W) by punching the T-shaped notch hole (29), the adhesive outlet hole is formed. The width of the notch opening is made as narrow as that of the U-shaped notch hole (28) so that the double notch (23a) in the third step (III) serving as (23) does not collapse. At the same time, the left end of the parallel long side of the crude plate (P1) is cut off in a wavy shape by a predetermined length (L4).

In the seventh step (VII), as is apparent from FIGS. 19 and 34 to 36, a predetermined length (L4) of the rough plate (P1) cut in a wavy shape is subjected to the seventh processing. A corrugation (embossing or beading) process is performed by a mold to form an uneven strip (17) for biting the concrete skeleton (C). The rough plate (P1) of the anchor pin (P) is in a state of being separated from each other, so to speak, by the contour cutting in the sixth step (VI), so that the corrugation of the uneven strip (17) is also an obstacle. It can be done without.

Next, in an eighth step (VIII), the parallel long sides of the crude plate (P1) are slightly upwardly bent by the eighth working mold as apparent from FIGS. 19 and 37 to 39. Raising (so-called nose-bending) processing and the following 9th and 10th steps (I
X) The ninth and tenth processing dies in (X) are used to remove the rough plate (P1) from the U-shape as shown in FIGS.
19, 46 to 48 by the eleventh processing die in the eleventh step (XI).
The long side of the above-mentioned crude plate (P1) is pressed firmly so as to be completely closed, and a three-dimensional cylindrical shape having a constant outer diameter (D1) is formed.

During the stepwise bending in the eighth to eleventh steps (VIII) to (XI), the backing flange (12) is backed up by the processing die in each step so that the holding flange (12) does not open again. Of course, the bending angle (θ) is maintained substantially at a right angle, and this results in the outward projection opposite to the dowels (18), (19) for plug removal.

In the last twelfth step (XII), the slight supporting legs (30) still maintaining the rough plate (P1) in a continuous state with the metal plate material (W) are subjected to the twelfth processing metal. Separated by a mold, the crude plate (P1) was
As in 49, the splitting groove (15) is defined to have a predetermined length (L1) at which the cutting groove (15) is cut, so that the product as a cylindrical anchor pin (P) can be formed. Finish.

In the above manufacturing method, the eighth step (VII)
The processes from I) to the twelfth step (XII) are performed stepwise in the order described, but the ninth step (IX) and the tenth step (XII)
Between the step (X) and the rough plate (P
In 1), a process of once bending and bending upward on the longitudinal center line (Y-Y) is interposed, so that the rough plate (P1) can be more smoothly and correctly plastically deformed from a U-shape to a C-shape. It may be determined as follows.

The second step (II) and the third step (III)
And the processing order of the two steps (II) and (III)
All processes at the same time in the fourth step (I
V) is performed as a pre-process in the third step (III), and the processing in the fourth step (IV) is performed in the sixth step (V).
Immediately before or immediately after I) may be considered.

In short, the dowels (18) and (19) are protruded, the adhesive outflow holes (20) to (23) are punched out, the splitting grooves (15) are cut, and the concave and convex strips (17) are formed. Various processes such as corrugation are intended to be freely performed in the pre-process from the eighth process (VIII) to the start of the winding bending process.

FIG. 51 shows a series of different manufacturing steps corresponding to FIG. 19, and shows the anchor pin (P) of the present invention.
Can also be produced by the following method.

That is, during the intermittent progressive feeding along the straight line of the metal plate material (W), in the third step (III), the spaces between the preliminary punched holes (26) and (27) are cut into a communicating state. With this, the splitting groove for expansion (1) having a fixed length (L3)
5) are arranged in a row, and as a primary contour punching (shape punching) processing in the subsequent fourth step (IV), a substantially T-shaped cutout hole (29) in plan view is formed on the left side of the metal plate material (W). ) Is punched and opened to keep the contour shape of the anchor pin (P) in a partially separated state. Until the fourth step (IV), each processing die is inserted into a pair of left and right pilot holes (24) (2).
According to 5), the two-sided holding state is maintained.

In the subsequent fifth step (V), a substantially U-shaped notch hole (28) in plan view communicating with the T-shaped notch hole (29) is formed in the metal plate material (W).
In order to remove the pilot hole (25) opened at the right end portion of the anchor pin (P), the contour of the anchor pin (P) is separated even at the remaining portion so that the pilot hole (25) opened at the right end is removed. Therefore, the narrow support legs (3
The rough plate (P1) of the anchor pin (P) which is still continuous with the metal plate material (W) via 0) is formed.

Then, in the next sixth step (VI), the right side edge of the rough plate (P1) is bent downward at a substantially right-angle crossing angle (θ) to form a holding flange (12). After the formation, the seventh to the same as in FIG.
The various processes of the 12 steps (VII) to (XII) are sequentially performed step by step to finish the cylindrical anchor pin (P). In this case, the order of the flanging in the sixth step (VII) and the step of corrugating the concavo-convex strip (17) in the seventh step (VII) may be reversed.

The series of manufacturing steps described with reference to FIGS. 19 and 51 are the same as those of the anchor pin (P) shown in FIGS. 1 to 11 described above, but have a longer length (L1) shown in FIGS. In the case of manufacturing the anchor pin (P), as shown in FIG. 52, a long metal plate (W) having a constant band width wider by the length (L1) is employed. Outflow hole for adhesive (22) (2) to right side of metal plate material (W)
What is necessary is just to add a pair which opposes 3).

In any of the manufacturing steps shown in FIGS. 19, 51 and 52, a plurality of adhesive outlet holes (20), (21) and (2) are used.
2) In (23), in addition to the method of punching all of them at once, it is also possible to punch several sets of them in another successive process.

Since the other methods are substantially the same as those described with reference to FIG. 19, only the reference numerals corresponding to those in FIG. 19 are entered in FIGS. 51 and 52, and detailed description thereof will be omitted. . In any case, the expanding plug (10) is inserted into the hollow of the finished anchor pin (P) from the adhesive inlet (11) through the inward dowels (18) (1).
It will be pushed and set strongly so as to pass through 9).

According to the manufacturing method of the present invention, a pair of positioning pilot holes (24) and (25) are preliminarily formed on both left and right ends of a long metal plate (W) having a fixed band width. Therefore, in the process of sequentially feeding the metal plate material (W) at a constant pitch (F) by guiding the pilot holes (24) and (25), the U-shaped cutout hole (28) or the T-shaped cutout is used. Various processes up to the partial contour punching (shape punching) process by the notch hole (29), that is, the dowels (18) (1)
9) protrusion and adhesive outflow holes (20) (21) (2)
2) Pre-processing such as punching of (23) and cutting of the split groove for expansion (15) can be performed stably and accurately.

The U-shaped cutout hole (28) as the partial contour cutting process allows one of the right and left sides of the metal plate material (W) to be cut off. Even if one of the pilot holes (25) is removed by this, each processing die in the subsequent process is maintained in a cantilever state until the final process by the other pilot hole (24). One side edge in W) can be used as a holding flange (12) to be bent without interfering with a substantially perpendicular crossing angle (θ).

Further, the T-shaped cutout hole (29) as the remaining partial contour punching process is punched out in a state of communicating with the U-shaped cutout hole (28), thereby forming the anchor pin (P). A rough plate (P1) having an overall developed contour shape as described above is formed, and further, each of the processing dies for successively winding and bending the rough plate (P1) in a three-dimensional manner is also used. The pilot hole (2
4) Since the cantilever is provided, the stepwise bending can be performed without any trouble.

As a result, a high-quality cylindrical anchor pin (P) can be produced very efficiently only by the automatic press working in the progressive process along the straight line of the metal plate material (W). Is remarkably excellent.

The anchor pin (P) of the present invention is used for repairing an outer wall of a building as follows.

That is, in performing the repair work,
First, a drill bit (31) for drilling as shown in FIG. 12 to the floating part marked in advance on the mortar outer wall (M) of the building.
Is used to open a pilot hole (H) for embedding anchor pins of a certain depth reaching from the mortar outer wall (M) to the concrete skeleton (C).

The drill bit (31) is located at the boundary between the small-diameter drilling portion (31a) at the distal end and the large-diameter chip removing portion (31b) at the base end, and the chip removing portion (31b) is provided.
A plurality of intermediate cutting blades (31c) having an even larger diameter are so-called two-stage bits fixed and integrated in a radially symmetric distribution type, and are used for rotary driving tools (32) such as vibration type electric drills and hammer drills. Used for mounting. (31d) is a tip cutting edge fixed to the perforation section (31a).

The edge (entrance) where the prepared hole (H) opens on the surface of the mortar outer wall (M) is formed by the intermediate cutting edge (31c) of the drill bit (31) with the anchor pin (P). A large-diameter stepped hole (33) corresponding to the holding flange (12) can be formed at once. The perforated state is as shown in FIG.

Next, the anchor pin (P) is buried in the prepared hole (H) having the stepped hole (33) as shown in FIG. 14, and is inserted and set inside the hollow of the anchor pin (P). The expanding plug (10) is struck by a striking tool (34) such as a driving rod or a hammer.

In this case, the expansion plug (10) inserted and set inside the hollow of the anchor pin (P) is provided with the inward dowels (18) (1) at the anchor pin (P).
9) and the concavo-convex strip (17a) of the concavo-convex strip (17) is sealed so as not to fall off toward either the base end or the tip end, so that it can be transported and used at a construction site. It is very convenient for handling and also improves the efficiency of the tapping operation.

By tapping the expanding plug (10),
The anchor pin (P) is connected to the split groove (15) for expansion and the closing line (1).
According to 6), the ridges (17) are gradually expanded and deformed from the front end side, and particularly the convex peripheral ridges (17b) of the concave and convex strips (17) are undetachably fixed to the concrete frame (C). Similarly, the large-diameter holding flange (12) of the anchor pin (P) is correctly locked in the stepped hole (33), and the mutual gap between the body surface of the anchor pin (P) and the pilot hole (H). (S1) is shielded from the surface of the mortar outer wall (M).

Then, the nozzle (14) of the adhesive injection pump (13) is directly connected to the adhesive injection port (11) of the anchor pin (P) as shown in FIG. It is inserted and set indirectly via a connection adapter, and a wet-curable epoxy resin or other adhesive (B) is injected under pressure into the hollow interior of the anchor pin (P).

Then, the injected adhesive (B)
As shown in FIG. 16, a plurality of adhesive outflow holes (20), (21), (2) distributed on the body surface of the anchor pin (P).
2) Through (23), the splitting groove for expansion (15), and the closing line (16), smoothly and quickly flow into and out of the gap (S1) between the body surface and the pilot hole (H), and furthermore, mortar. The interspace (floating portion) (S2) between the outer wall (M) and the concrete skeleton (C) will spread and penetrate a wide area.

As a result, the anchor pin (P) fixed to the concrete frame (C) is fixed to the adhesive (B).
The mortar outer wall (M) rises from the concrete skeleton (C) and expands due to the synergistic action of the mechanical fixing force and the adhesive force of the anchor pin (P). It is remarkably firmly bonded and integrated with the concrete skeleton (C) without fear of bending deformation and further peeling off.

In this case, since the adhesive (B) is injected under pressure into the hollow of the anchor pin (P) by the injection pump (13), the adhesive (B) receiving the internal pressure Tries to flow back and overflow to the surface of the mortar outer wall (M) along the mutual gap (S1) between the body surface of the anchor pin (P) and the prepared hole (H), and lifts the mortar outer wall (M). An acting force acts to bend and deform into an expanded state.

In this respect, the anchor pin (P) of the present invention has one
The piece is formed into a cylindrical shape by bending the metal plate (W) of the piece into a three-dimensional shape, and the injection port for the adhesive at the base end side (11)
The holding flange (12) is bent so as to maintain a crossing angle (θ) substantially perpendicular to the body surface, so that the holding flange (12) correctly opposes the above-described acting force, and The backflow and overflow of the adhesive (B) toward the surface of the outer wall (M), thereby contaminating the surface, and the flexural deformation of the mortar outer wall (M) can be reliably suppressed. In this case, there is no possibility that the anchor pin (P) may be cracked or broken, and the anchor pin (P) has high durability.

After the injection of the adhesive (B), the nozzle (14) is pulled out from the adhesive injection port (11) of the anchor pin (P), and the injection port (11) is set in FIG.
As suggested in the above, a beautiful closed state may be obtained by using a putty such as an epoxy mortar having affinity for the adhesive (B) or a decorative plug (35).

[0083]

As described above, the anchor pin (P) for repairing the outer wall of the building according to the present invention is an integral product which is formed by bending a metal plate (W) into a substantially cylindrical shape and three-dimensionally, and in the longitudinal direction. Pressing flange (1) for preventing backflow of the adhesive (B) from the base end portion and for preventing the outer wall (M) from floating.
2) is bent outward at a substantially right-angled crossing angle (θ), so that cracking or breakage may occur even if it is forcibly expanded from the tip side by hitting the expansion plug (10). There is no possibility that the adhesive (B) flows back or overflows on the surface of the outer wall (M) even if the pressure of the adhesive (B) is injected, or the outer wall (M) rises and expands even when receiving the pressure of the adhesive (B). There is no danger that the anchor pin (P) can be provided with high durability, and the problem of the conventional product described with reference to FIGS.

Also, the outflow holes (20), (21), (22), (2) for the adhesive are provided on the body surface of the anchor pin (P) according to the present invention.
3) is formed as an opening of at least two sets of four in total, and the set of two outflow holes (22) and (23) is closed with the longitudinal center line (Y-Y) of the anchor pin (P). Line (1
6) Because they are in a facing relationship above, the remaining pair of outflow holes (20) and (21) are facing symmetrical positions orthogonal to these, and are distributed in the overall radially symmetric form. The adhesive (B) injected into the hollow interior of the anchor pin (P) is smoothly and quickly applied to the mutual gap (S1) between the body surface and the embedding pilot hole (H), and is universal in each direction. It is possible to spread and permeate a wide area toward the mutual gap (floating portion) (S2) between the outer wall (M) and the concrete skeleton (C).

Further, according to the method of manufacturing the anchor pin (P) according to the present invention, a long metal plate material (W) having a constant band width is formed by a straight line regardless of any of the second and third aspects. The anchor pin (P) can be manufactured very efficiently only by the automatic press working in the process of intermittent sequential feeding along the line, and the effect of mass production can be maximized.

A pair of positioning pilot holes (24) and (25) are preliminarily machined at both left and right ends of the metal plate (W), and are intermittently fed at regular intervals (F). One of the left and right sides of the metal plate material (W) to be cut is partially cut off by punching out a U-shaped cutout hole (28). Since each processing die is kept cantilevered until the final step by the pilot hole (24) remaining on the other side, one side edge of the metal plate (W) is connected to the adhesive (B). As a holding flange (12) for preventing backflow and for preventing the outer wall (M) from rising, it can be bent without interfering with a substantially right-angle crossing angle (θ), and is continuously anchored on a metal plate (W). ( Crude plate having an overall expansion contour shape as) the (P1), sequentially stepwise Maki bending, it is from without hindrance allow for three-dimensional in a cylindrical.

According to the manufacturing method of the second aspect, a substantially U-shaped cutout hole (28) in a plan view is partially partially formed on one side of the metal plate material (W). Notch hole (28) to one side of remaining metal plate (W)
A substantially T-shaped notch hole (29) in plan view communicating with
Since the holding flange (12) is bent before performing the next contour punching, the holding flange (12) is supported on the metal plate material (W) under a supporting state in which the metal plate (W) is not easily deformed in a large area. 12) has the effect that it can be bent with high accuracy and stability.

The inward dowel (18) for retaining the plug
Protrusion of (19) and outflow hole for adhesive (20)
(21) Punching of (22) and (23), slitting of the split groove for expansion (15), and concrete skeleton (C)
The corrugation of the rugged strips (17) is carried out freely on the metal plate (W) as a pre-process until the rough plate (P1) of the anchor pin (P) starts to be bent and bent. Can be applied.

If the manufacturing method according to the fourth aspect is adopted, the longitudinal center line (Y-Y) is placed on the closing line (16) parallel to the longitudinal center line (Y-Y) of the crude plate (P1). ) A separate outflow hole for adhesive (23) facing the outflow hole for adhesive (22) opening upward can be formed by the bending process of the crude plate (P1), which is extremely advantageous. is there.

If the production method according to claim 5 is adopted, the uneven strip (17) for biting the concrete body (C) is smoothly and smoothly corrugated (beading or embossing). It can be machined, and when it is finished as a cylindrical anchor pin (P) to make it three-dimensional, there is an effect that the concave and convex strips (17) can be kept in an accurate closed state by themselves.

As a precautionary measure, this type of anchor pin is not limited to the conventional one described at the beginning with reference to FIGS. 53 to 57, as well as Japanese Patent Application Laid-Open No. 4-128473 and Japanese Utility Model Publication No. 4-12206.
No. 4-23154, No. 5-28288 and No. 7-36015 are known, all of which are formed from metal pipe material, and are formed by bending a temporary metal sheet into a pipe shape. Even if it is suggested that
The specific configuration of the anchor pin made of the metal plate and the specific manufacturing method are not described at all. Therefore, it is impossible to easily conceive the present invention from these known techniques.

[Brief description of the drawings]

FIG. 1 is a plan view of an anchor pin according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a rear view of FIG. 2;

FIG. 4 is a right side view of FIG. 1;

FIG. 5 is a left side view of FIG. 1;

FIG. 6 is a sectional view taken along line 6-6 in FIG. 1;

FIG. 7 is a sectional view taken along line 7-7 of FIG. 2;

FIG. 8 is an enlarged sectional view taken along line 8-8 in FIG. 2;

FIG. 9 is an enlarged sectional view taken along line 9-9 in FIG. 2;

FIG. 10 is an enlarged sectional view taken along line 10-10 in FIG. 2;

11 is an exploded perspective view showing the anchor pin of FIG. 1;

FIG. 12 is a cross-sectional view showing a drilling operation state of the anchor pin embedding pilot hole.

FIG. 13 is a sectional view showing the prepared anchor pin embedding hole.

FIG. 14 is a cross-sectional view showing a tapping operation state of the expanding plug.

FIG. 15 is a cross-sectional view showing a state in which an adhesive is injected into an anchor pin.

FIG. 16 is a cross-sectional view showing a state in which the outer wall has been repaired by the anchor pin.

FIG. 17 is a sectional view corresponding to FIG. 6 and showing a modified embodiment of the anchor pin according to the present invention.

FIG. 18 is a sectional view corresponding to FIG. 7 showing a modified embodiment.

FIG. 19 is a plan view showing a series of manufacturing steps for the anchor pin of the present invention.

FIG. 20 is an enlarged plan view extracting and showing a preliminary step of FIG. 19;

FIG. 21 is an enlarged plan view extracting and showing a first step of FIG. 19;

FIG. 22 is a sectional view taken along line 22-22 of FIG. 21;

FIG. 23 is an enlarged plan view extracting and showing a second step of FIG. 19;

FIG. 24 is a sectional view taken along line 24-24 in FIG. 23;

FIG. 25 is an enlarged plan view showing a third step extracted from FIG. 19;

26 is a sectional view taken along line 26-26 of FIG.

FIG. 27 is an enlarged plan view extracting and showing a fourth step of FIG. 19;

FIG. 28 is a sectional view taken along line 28-28 of FIG. 27;

FIG. 29 is an enlarged plan view extracting and showing a fifth step of FIG. 19;

FIG. 30 is a sectional view taken along line 30-30 of FIG. 29;

FIG. 31 is an enlarged plan view extracting and showing a sixth step of FIG. 19;

FIG. 32 is a sectional view taken along line 32-32 of FIG. 31;

FIG. 33 is an enlarged plan view showing a rough plate of the anchor pin partitioned and formed in the sixth step.

FIG. 34 is an enlarged plan view showing a seventh step extracted from FIG. 19;

FIG. 35 is a sectional view taken along line 35-35 of FIG. 34;

FIG. 36 is an explanatory view showing a corrugating operation in a seventh step.

FIG. 37 is an enlarged plan view extracting and showing the eighth step of FIG. 19;

FIG. 38 is a sectional view taken along line 38-38 of FIG. 37;

FIG. 39 is an explanatory view showing a nose bending operation in an eighth step.

FIG. 40 is an enlarged plan view extracting and showing the ninth step of FIG. 19;

FIG. 41 is a sectional view taken along line 41-41 of FIG. 40;

FIG. 42 is an explanatory diagram showing a U-shaped bending operation in a ninth step.

FIG. 43 is an enlarged plan view extracting and showing a tenth step of FIG. 19;

FIG. 44 is a sectional view taken along line 44-44 of FIG. 43;

FIG. 45 is an explanatory view showing a C-shaped bending operation in a tenth step.

FIG. 46 is an enlarged plan view showing an eleventh step extracted from FIG. 19;

FIG. 47 is a sectional view taken along the line 47-47 in FIG. 46;

FIG. 48 is an explanatory view showing the depressing and pressing operation in the eleventh step.

FIG. 49 is an enlarged plan view extracting and showing a twelfth step of FIG. 19;

FIG. 50 is an explanatory view showing another intermediate bending operation interposed between the ninth step and the tenth step.

FIG. 51 is a plan view showing a different series of manufacturing steps corresponding to FIG. 19;

FIG. 52 is an enlarged plan view partially illustrating a manufacturing process of the anchor pin corresponding to FIG. 17;

FIG. 53 is an exploded perspective view showing a conventional anchor pin.

FIG. 54 is a plan view showing the assembled state of FIG. 53.

FIG. 55 is a front view of FIG. 54.

FIG. 56 is a sectional view taken along line 56-56 of FIG. 54;

FIG. 57 is a cross-sectional view showing a use state of a conventional product.

[Explanation of symbols]

 (10) ・ Plug (12) ・ Pressing flange (15) ・ Split groove (17) ・ Concavo-convex strip (18) ・ Inward dowel (19) ・ Inward dowel (20) ・ Outflow hole for adhesive (21) ・Outflow hole for adhesive (22) ・ Outflow hole for adhesive (23) ・ Outflow hole for adhesive (23a) ・ Recess (24) ・ Pilot hole (25) ・ Pilot hole (28) ・ U-shaped notch Hole (29) ・ T-shaped notch hole (30) ・ Support leg (B) ・ Adhesive (C) ・ Concrete skeleton (F) ・ Pitch of pilot holes (M) ・ Mortar outer wall (P) ・ Anchor pin (P1) ・ Rough plate of anchor pin (W) ・ Metal plate (Y─Y) ・ Longitudinal center line (L1) ・ Length of anchor pin (θ) ・ Crossing angle of holding flange

Claims (5)

[Claims] 1. An adhesive outflow hole (22) and a split groove for opening at a tip end thereof on a longitudinal center line (YY) of a substantially rectangular metal plate material (W) in an expanded state. (15) is cut out. Similarly, when two long sides of the metal plate (W) are wound and bent into a three-dimensional shape as a closed line (16) on the parallel long side of the metal plate (W), another adhesive is formed. A pair of symmetrical recesses (23a) serving as the outflow holes (23) are provided, and another outflow for the adhesive is provided at a symmetrical position across the longitudinal center line (Y-Y) of the metal plate material (W). A pair of holes (20) and (21) and a pair of inwardly protruding dowels (18) and (19) for retaining the plug (10) are scattered and distributed. At the front end in the direction, there is an uneven strip (1) for biting into the concrete skeleton (C).
7) is formed in a wavy shape intersecting with the expanding groove (15), and the base end of the metal plate material (W) in the longitudinal direction is also used to prevent backflow of the adhesive (B) and the outer wall ( The metal plate (W) in the unfolded state is bent as a holding flange (12) for preventing the lifting of M) in a direction opposite to the inward dowels (18) and (19) at a crossing angle (θ) that is substantially perpendicular to the dowels (18) and (19). Is wound around a longitudinal center line (Y-Y) to form a substantially cylindrical shape, thereby forming an almost cylindrical shape. 2. A pair of positioning pilot holes (24) and (25) at both left and right ends of a long metal plate material (W) having a constant band width.
As an automatic press working in the process of intermittently feeding the metal plate (W) at a constant interval pitch (F) of the pilot holes (24) and (25). A substantially U-shaped cutout hole (28) in plan view in which one of the left and right sides of the plate (W) is opened at one side edge and one of the pilot holes (25) is removed. By partially contouring, the metal mold in the subsequent process is maintained in a cantilevered state by the other pilot hole (24) until the end, and one side of the contoured metal plate material (W) The edge is subsequently bent to a substantially right-angled crossing angle (θ) as a holding flange (12) for preventing backflow of the adhesive (B) and for preventing lifting of the outer wall (M). The other side of the metal plate material (W) is formed as a substantially T-shaped notch hole (29) in plan view communicating with the U-shaped notch hole (28), and is also partially contoured. Forming a crude plate (P1) which is continuous with the metal plate material (W) via the still small number of support legs (30) and has an overall developed contour shape of the product, and thereafter the crude plate (P1) is formed. The holding flange (1
2) Bending stepwise so as to form a cylindrical shape that protrudes outward, and as one of the pre-processes before starting the bending processing, a plug is removed from one side of the metal plate material (W). Protruding dowels (18) and (19) that result inward for stopping and adhesive outflow holes (20) (21) (22) (23) that are scattered and distributed as at least two sets of four in total. )
And the other one side is cut into the split groove for expansion (15) and corrugated with the concave and convex strips (17) for the concrete skeleton (C). The supporting leg (30) of the crude plate (P1) bent into the cylindrical shape is finally cut off from the metal plate material (W) to be dimensioned to a fixed length (L1). Manufacturing method of anchor pins for exterior wall repair. 3. A pair of positioning pilot holes (24) and (25) at both left and right ends of a long metal plate (W) having a constant band width.
As an automatic press working in the process of intermittently feeding the metal plate (W) at a constant interval pitch (F) of the pilot holes (24) and (25). Either one of the left and right sides of the plate material (W) is partially contoured as a substantially T-shaped cutout hole (29) in plan view, and then, secondarily, the metal plate material (W) The other side of the pilot hole (25) communicates with the T-shaped notch hole (29) and has a substantially U-shaped notch hole (28) in a plan view whose one side edge is open.
Is partially removed to remove the other of the metal plate material (W) while maintaining the processing die in the subsequent process in a cantilevered state by one of the pilot holes (24) to the end. To form a crude plate (P1) that is continuous through still few support legs (30) and has the overall deployment profile of the product, and then the other side edge of the crude plate (P1) is As a holding flange (12) for preventing backflow of the adhesive (B) and for preventing the rising of the outer wall (M), it is bent at a substantially right-angled crossing angle (θ), and the crude plate (P1) is successively bent. (1
2) Bending stepwise in order so that it becomes a cylindrical shape that protrudes outward, and as a pre-process until the bending processing is started, one side of the metal plate material (W) is expanded. Split groove (1
5) and the corrugation of the biting concave and convex strips (17) on the concrete skeleton (C) are performed, and the other side of the dowel (18) is turned inward to prevent the plug from coming off. And (3) punching out the adhesive outflow holes (20), (21), (22) and (23) which are scattered and distributed as at least two sets of four in total. For repairing an outer wall of a building, characterized in that a support leg (30) of a crude plate (P1) bent into a shape is finally cut off from a metal plate material (W) to be dimensioned to a fixed length (L1). An anchor pin manufacturing method. 4. When a substantially U-shaped cutout hole (28) in plan view is contoured in a metal plate material (W), an inner deep portion of the cutout hole (28) faces wider than an entrance portion. When the rough plate (P1) is bent into a cylindrical shape as a pair of recesses (23a), one adhesive outflow hole (23) is defined by closing the two recesses (23). 3. The method for producing an anchor pin for repairing an outer wall of a building according to claim 1, wherein the anchor pin is used for repairing an outer wall of a building. 5. When a substantially T-shaped cutout hole (29) in a plan view is contoured in a metal plate material (W), the parallel edges of the cutout hole (29) are partially wavy to continue. The outer wall of a building according to claim 1 or 2, wherein the uneven strip (17) for biting the concrete body (C) conforming to the wavy portion is corrugated to a rough board (P1). An anchor pin manufacturing method.