JPH0386339A - Manufacture of cage body for reinforcing formed part and its apparatus - Google Patents

Abstract

PURPOSE:To restrain a manufacturing cost and to increase the reinforcement efficiency in a formed part by combining intersecting areas of plural axial reinforcements extending nearly in parallel to a diametral direction and a spiral reinforcement unfastened from a spiral reinforcement coil outside them to manufacture a cage body for reinforcing the formed part. CONSTITUTION:In the manufacture of the cage body 16 for reinforcing the formed part composed of the axial reinforcements 12 and a spiral reinforcement 10 wound spirally outside them, a wire to make a spiral reinforcement 10 is wound tightly on a coil holding body 18 in advance to form a spiral reinforcement coil. Plural axial reinforcements 12 extending nearly in parallel with the diametral direction at a specified interval are supplied inside the spiral reinforcement coil. With the supply of these axial reinforcements to the lengthwise direction, the above spiral reinforcement is unfastened in the axial direction. The areas wherein this successively unfastened spiral reinforcement 10 intersects with each axial reinforcement 12 are welded selectively to obtain the cage body 16 for reinforcing the formed part.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a spiral reinforcement made of a wire rod with high bending stress, such as high-tensile steel, and a plurality of spiral reinforcements wound around the outside in a spiral shape. The present invention relates to a method and an apparatus for suitably manufacturing a cage for reinforcing a molded product, which is composed of shaft reinforcement.

Prior art] When manufacturing poured concrete products such as concrete piles, as a core for reinforcing the products,
Generally, parts made of reinforcing steel are used.

This part has a substantially cylindrical shape in which a plurality of long reinforcing bars (hereinafter referred to as "axial bars") are spaced apart in parallel at required intervals in the circumferential direction, and ""Spiralmuscle"
It is constructed by winding a wire rod called a spiral in a spiral shape. To manufacture this reinforcing member, a spiral reinforcement is wound around the outer periphery of the plurality of axial reinforcements while being fed out horizontally in the axial direction, so that the axial reinforcement and the spiral reinforcement are The intersecting parts are joined by spot welding, clips, or wire wrapping. Note that this part is not only the core of the concrete pile.

It is also used as a reinforcing core for water pipes with polygonal cross sections and caissons for submerged box construction.

Problems to be Solved by the Invention In response to recent demands regarding the reinforcing member of the concrete molded product, attempts have been made to increase the mechanical strength of the member by using high-tensile steel as the material for the spiral reinforcement. The problem with using high-strength steel as spiral reinforcement is that its bending stress is extremely large, so when manufacturing the above-mentioned parts, while supplying axial reinforcement as in the past, This means that the task of winding the helical muscle in a spiral becomes extremely difficult. That is, the work of winding high-strength steel in synchronization with the feeding of the shaft reinforcement could be easily done in the case of steel made of conventional soft materials. However, if high-tensile steel is used as the material for the spiral reinforcement, it requires a large amount of force to bend, making it difficult to use conventional methods. be.

Purpose of the Invention Therefore, in view of the on-site demand for using such high-tensile steel as spiral reinforcement, the inventor conducted repeated trial production in order to suitably solve this problem, and as a result, developed a wire rod made of high-tensile steel. A "spiral muscle coil" is manufactured by tightly winding the "spiral muscle coil" so that it has the desired cross section (circular, square, or other polygon), and this "spiral muscle coil" is set outside the shaft reinforcement, and the shaft reinforcement is In synchronization with the feeding of the coil, the spiral muscle is pushed forward in the axial direction at a required pitch from the tightly wound coil, and the spiral muscle and the axial muscle are connected at the required location, thereby making the high-tensile steel the spiral muscle. It has been found that the parts can be manufactured easily.

In other words, an object of the present invention is to prevent the need for a large-scale mechanical structure when a spiral reinforcement is made of a wire rod, such as high-tensile steel, which is difficult to bend into a desired shape at the manufacturing site of reinforcing cages. First, it is an object of the present invention to provide a method and apparatus for manufacturing a cage for reinforcing a molded product, which can be manufactured at a low cost.

Means for solving the problems In order to suitably overcome the above problems and achieve the intended purpose,
The method for manufacturing a cage for reinforcing a molded product according to the present invention includes a plurality of axial reinforcements extending substantially parallel to the circumferential direction at required intervals, and a spiral reinforcement wound spirally around the outside of the axial reinforcements. When manufacturing a cage for reinforcing a molded product, a spiral reinforcement coil is formed by tightly winding the wire rod to become the spiral reinforcement in advance, and the spiral reinforcement coil is formed at required intervals on the inside of the spiral reinforcement coil. In addition to supplying a plurality of axial reinforcements extending substantially parallel to the circumferential direction,
In synchronization with the longitudinal supply of this axial muscle.

The method is characterized in that the spiral muscle coil is loosened in the axial direction, and the intersecting parts of the sequentially loosened spiral muscle and each axial muscle are selectively connected.

Further, the apparatus for manufacturing a cage for reinforcing a molded product according to another invention of the present application includes a plurality of shaft reinforcements extending substantially parallel to the circumferential direction at required intervals, and a plurality of shaft reinforcements that are wound spirally around the outside of the shaft reinforcements. An apparatus for manufacturing a cage for reinforcing a molded product made of spiral reinforcements, and an axial reinforcement support stand that supports the plurality of axial reinforcements so as to be freely delivered in the axial direction thereof.

A spiral muscle coil formed by closely winding a wire rod to become the spiral muscle, a coil holder into which the spiral muscle coil can be detachably loaded, and a coil holder loaded with the spiral muscle coil, horizontally. A holder support stand that holds the holder in a fixed position, and a spiral muscle delivery device that loosens the tightly wound spiral muscle coil in the axial direction at a required pitch in synchronization with the longitudinal supply of the axial muscle. a coupling device that selectively connects and fixes the intersection of the spiral muscle and the plurality of axial muscles, which are being loosened in sequence; It is characterized by being composed of a shaft-bar tensioned trolley.

Furthermore, an apparatus for manufacturing a cage for reinforcing a molded product according to another invention of the present application includes a plurality of axial reinforcements extending substantially parallel to the circumferential direction at required intervals, and a plurality of axial reinforcements that are wound spirally around the outside of the axial reinforcements. An apparatus for manufacturing a cage for reinforcing a molded product made of spiral reinforcements, comprising: an axial reinforcement support stand that supports the plurality of axial reinforcements so as to be freely fed out in the axial direction; and a wire rod to become the spiral reinforcements. A spiral muscle coil formed by closely winding the spiral muscle coil in advance, a coil holder on which the spiral muscle coil can be detachably loaded, and a coil holder loaded with the spiral muscle coil are held in a fixed position in a horizontal posture. The tightly wound spiral muscle coil is sequentially unraveled by a holder support stand and a spiral muscle delivery device for unwinding the tightly wound spiral muscle coil in the axial direction at a required pitch in synchronization with the longitudinal supply of the axial muscle. a coupling device that selectively connects and fixes an intersection between a spiral muscle and the plurality of axial muscles; and a shaft that is inserted inside the plurality of axial muscles and maintains a distance between each of the axial muscles. supporting a large number of muscle spacing retaining rings and the axial muscle spacing retaining rings;
a ring supply device that supplies the plurality of axial reinforcements to the inside of the plurality of axial reinforcements at required intervals; a coupling device that connects and fixes the plurality of axial reinforcements to the axial reinforcement spacing ring that is sequentially supplied; and a coupling device that connects and fixes the plurality of axial reinforcements; , and a shaft tensioning cart that intermittently supplies tension to the downstream side in the longitudinal direction.

EXAMPLES Next, the method and apparatus for manufacturing a cage for reinforcing a molded product according to the present invention will be described using preferred examples with reference to the accompanying drawings. FIG. 1 is an overall perspective view schematically showing an apparatus for manufacturing a reinforcing cage as an example. It shall be used for manufacturing reinforcing bars.

As shown in the overall configuration of FIG. 1, the reinforcing cage manufacturing apparatus according to the embodiment can freely feed out the shaft reinforcement 12 from the upstream side to the downstream side with respect to the longitudinal supply direction of the shaft reinforcement 12. The axial muscle support stand 74 supports the axial muscle coil 14, the holder support stand 48 holds the coil holder 18 loaded with the spiral muscle coil 14 horizontally in a fixed position, and the tightly wound spiral muscle coil 14 is unraveled in the axial direction at a required pitch. Spiral muscle delivery device 7 for
0, and a clip device f that connects the spiral muscle 10 loosened by the device and the required number of axial muscles 12 with clips at necessary locations.
154, and an axial reinforcement tensioning cart 30 that intermittently pulls out the required number of axial reinforcements 12 toward the downstream side.

(Regarding the spiral muscle coil and its holder) In the present invention, the spiral muscle coil 14 formed by closely winding the spiral muscle 10 is loosened in the axial direction, and the required number of shaft reinforcements 2 are maintained at parallel intervals.
Since the reinforcing member 16 is manufactured by coupling the reinforcing member 16 to the coil holder 18, the spiral muscle coil 14 and the coil holder 18 will be explained first. Especially as shown in FIG.

For example, the spiral reinforcement 10 made of high-tensile steel is tightly wound in a spiral shape and formed into a spiral reinforcement coil 14. This spiral reinforcement coiler 4 is shipped from the factory in a wound state at the spiral reinforcement manufacturer, but at that time, to prevent the winding part from becoming loose, the package shape is maintained by storing it in a case, etc. (Fig. (not shown) will be done. Note that the dimensional values such as the thickness of the spiral reinforcement 10 and the diameter of the spiral reinforcement coil 14 are appropriately set in consideration of various factors such as the standard and required strength of the molded product such as a concrete pile to be reinforced.

The spiral muscle coil 14 is inserted into a coil holder 18 having an outer diameter slightly smaller than the inner diameter of the coil at the manufacturing site of the reinforcing member, and is suspended, for example, by an overhead running lane. It is attached in a horizontal position to a holder support stand 48 that is arranged upright on a fixed base 46 . A schematic structure of this coil holder 18 is shown perspectively in FIG. 4 with a portion cut away. That is, the coil holder 18 is basically configured as a cylindrical body, and has an inlet flange 20 at one end and an outlet flange 22 at the other end (hereinafter referred to as "inlet side"). refers to the side from which the shaft reinforcement 2 is carried in, and the "exit side" refers to the side from which the shaft reinforcement 12 is carried out).

The cylindrical body of the spiral muscle coil 14 is provided with an axial reinforcement introduction path 2 that guides each axial reinforcement 12 to the axial reinforcement tension truck 30, as described later.
4 are formed in plural numbers at required intervals in the circumferential direction of the main body. This axial muscle introduction path 24 is configured as a groove extending in the axial direction.

A taper is provided that becomes shallower from the inlet side toward the outlet side. A cylindrical sleeve 26 is attached to the coil holder 18.
is externally fixed, thereby covering each axial muscle introduction path 24 from the outside. Further, the inlet side flange 20 and the outlet side flange 22 are each provided with a shaft reinforcement insertion hole 28 at a portion corresponding to each shaft reinforcement introduction path 24, so that each shaft reinforcement 12 is inserted into the corresponding shaft during operation of the device, which will be described later. It can pass through the muscle insertion hole 28.

The number of axial reinforcement introduction passages 24 and axial reinforcement insertion holes 28 formed in the coil holder 18 is determined depending on the actual design specifications, but in the illustrated example, they are each set to six. In reality, in order to give the coil holder 18 versatility, for example, 12 radial shapes are formed in the cross section, and in addition to the 12 axial reinforcements 12, 9 axial reinforcements 12 or 6 axial reinforcements are formed. It is preferable to design it so that it can cope with 12 cases.

(Regarding the holder support stand and shaft tension cart) As shown in FIGS. 1 to 4, the holder support stand 48 for horizontally mounting and supporting the coil holder 18 is attached to a fixed base 46
placed upright on top.

This holder support stand 48 includes a flange abutting plate 50 that can be brought into close contact with the inlet side flange 20 of the coil holder 18, and the flange abutting plate 50 also has a hole formed in the inlet side flange 20. A shaft reinforcement insertion hole 52 corresponding to each shaft reinforcement insertion hole 28 is bored. and spiral muscle coil 1
As shown in FIG. ．． After aligning the shaft reinforcement insertion holes 52, horizontal mounting is achieved by fixing with appropriate means such as bolts and nuts.

A long horizontal frame 32 is extended on the front side of the fixed base 46, and two rails 34 are laid on the upper surface of this horizontal frame 32. The shaft tension cart 30 is capable of reciprocating. The shaft tensioning cart 30 pulls out a plurality of shaft reinforcements 12 in the direction of the arrow in FIG. 1 on its outward journey.
It is moved intermittently for the clipping operation that connects the spiral muscle 10 and the spiral muscle 10. As shown in FIG. 2, the shaft tension trolley 30
is equipped with a horizontal cylindrical base 31, and this base 31 has an axial muscle tip holder 3 pointing toward the holder support stand 48.
8 is provided. As particularly shown in FIGS. 5 and 6, the axial muscle tip holder 38 is composed of a fixed disk 40 and a movable disk 42, each of which has a required number of axial muscle insertion holes. 44 are bored at required intervals in the circumferential direction.

That is, both discs are set to have the same diameter and are concentric, but the movable disc 42 is driven by a mechanism (not shown) and can rotate slightly with respect to the fixed disc 40. Therefore, after inserting the tip of the shaft muscle 12 formed in one spherical head as shown in FIG. 5 into the shaft muscle insertion hole 44 of both discs (see FIG.
(a)), by slightly rotating the movable disc 42 in the required direction, the shaft 12 can be reliably ramped as shown in FIG. 6(b). The original position of the axial muscle tension cart 3o is as shown in FIG. The rear end of the body 18 and the axial muscle tip holding part 38 of the axial muscle tensioning cart 3°
are facing each other with a small gap between them.

As is clear from FIG. 1, the horizontal frame 32 is intermediately supported at a predetermined position to support the member 16, which extends horizontally while being pulled by the shaft tension cart 30 during operation of the apparatus, to prevent the deflection of the member 16. A cage support 82 is provided to prevent this. This cage support 82 is normally located below the installation level of the rail 34 and in a standby state, and after the shaft tension truck 30 has completely passed above the cage support 82, it is raised and The member 16 can be supported so as to be movable in the horizontal direction.

(About the clip device) As shown in FIG. 2, a clip device 54 is disposed on the fixed base 46 in close proximity to the shaft muscle tip holding portion 38 of the shaft muscle tensioning cart 30 that is waiting at the original position. has been done. As is clear from FIG. 1, this clip device 54 is attached to the fixed base 4.
It consists of a ring-shaped frame 56 that stands upright at 6, and the shaft muscle tip holder 38 of the shaft muscle tensioning cart 30 can pass through the inner diameter portion of the ring-shaped frame 56 without contact. As shown in FIG. 7, a plurality of heads 58 are arranged on the ring-shaped frame 56 at required intervals in the circumferential direction. In the illustrated example, six heads 58 are provided, of which three heads 58 are fixed to the ring-shaped frame 56. In addition, other heads 58 (total of three heads) are provided every other head with respect to the fixed head 58 so as to be movable with respect to the ring-shaped frame body 56.

That is, three arcuate grooves 59 having a predetermined arcuate angle are bored in the ring-shaped frame 56 so as to be equally divided at a predetermined central angle. In this arcuate groove 59, the movable head 58
is provided and driven by a mechanism (not shown) so that it can move in an arc within the range of the arc-shaped groove 59.

What is the reason for providing the fixed and movable heads 58 in this manner?

As mentioned above, the number of axial reinforcements 12 provided in the manufactured part 16 varies depending on the specific design specifications, and the clip locations that connect the spiral reinforcement 0 and the axial reinforcements 12 may also differ, so the number of axial reinforcements 12 may be small. This is because a number of heads 58 can be used to manufacture parts 16 according to many design specifications. For example, FIG. 7 shows an example in which six heads 58 deal with six spiral muscles 10, and FIG. 11 shows an example in which six heads 58 deal with nine spiral muscles 1o. ing.

Each head 58 has a clip 64 having two crimped parts 64a and 64b, as shown in FIG.

Two clipping jaws 60 are provided in parallel to attach to the intersection of the spiral reinforcement 0 and the shaft reinforcement 12. Both clipping jaws 60 are biased by a booster mechanism (not shown) consisting of a fluid pressure cylinder and a toggle link, for example, to open and close synchronously. When the clipping jaws 60 are closed, the pressing arm 62 is urged by a mechanism (not shown) to forcefully press the central portion of the clip 64 located at the intersection of the spiral muscle 10 and the axial muscle 12. , the two caulking portions 64a.

64b and 3 points can be used for "caulking". Note that the head 58 holds a large number of clip groups connected by adhesive tape or the like, and feeds the clips 64 using a built-in clip supply section 66.

One piece can be supplied to each intersection of the spiral muscle 10 and the axial muscle 12. This clip supply section 66 is provided with a clip guide 68 that smoothly guides a large number of clip groups. The operating order of this head 58 is shown in FIGS. 9(a) to 9(d).

(Regarding the spiral muscle delivery device) As shown in FIGS. 1 and 2, the fixed base 46 has a spiral muscle consisting of a gate-shaped stand at an intermediate position between the holder support stand 48 and the clip device @54. A delivery device 70 is arranged upright. A delivery piece 72 is disposed at the center of the top of the spiral muscle delivery device 70 and is intermittently driven to swing by a mechanism not shown. The coil holder 1 is horizontally supported on the holder support stand 48.
The spiral muscle coil 14 extends under the gate-shaped stand of the spiral muscle delivery device 70 and is loaded on the coil holder 18.
The lower end of the delivery piece 72 is located above the rear end. This spiral muscle delivery device 70 swings the delivery piece 72 intermittently when coupling the spiral muscle 10 to the axial muscle 12 that is intermittently delivered downstream as described later, thereby creating a close contact state. The spiral muscle coil 14 is loosened, and the direction is supplied to the downstream side one pitch at a time. Note that the coil holder 18 loaded with the spiral muscle coil 14 is
When attached to the holder support stand 48, the spiral muscle delivery device 70 is configured to be retracted to a position where it does not interfere with the coil holder 18.

(About the axial muscle spacing mechanism) As described above, the plurality of axial muscles 12 are supplied to the downstream side through each axial muscle introduction path 24 in the coil holder 18, and are loosened by the spiral muscle delivery device 70. A clip connection with the spiral muscle 10 is made by a clip device 54. In this case, a required distance is necessarily required from the outlet side flange 22 of the coil holder 18 to each clipping jaw 60 of the clip device 54. For this purpose, the axial muscle 12
If the diameter of the axial muscle 12 is small, for example, each axial muscle 12 as a whole will be bent downward loosely, and there is a concern that the axial muscle 12 and the spiral muscle 10 will not come into close contact at the intersection. If the axial muscle 12 and the spiral muscle 10 separate at the intersection in this way,
This prevents the clip device 54 from smoothly connecting the clips, which poses a major obstacle to automation.

Therefore, in such a case, as shown in FIG. 12, a axial muscle supporter 73 is installed between the spiral muscle delivery device 70 and the clip device 54 as a mechanism to maintain a constant interval between the adjacent axial muscles 12. It is preferable to set it in advance. The shaft supporter 73 is configured as a ring body having U-shaped holding pieces 75 that allow linear movement of the shaft reinforcement 12 at required intervals in the circumferential direction. It is attached and vertically held in an optimal position between the spiral muscle delivery device W70 and the clip device 54.

(Regarding Modifications) As a modification of the body 16 manufactured by the above-described apparatus, there is a bodywork 6 as shown in FIG. 13.

This molded product reinforcing cage 16 includes spiral reinforcements 10 and axial reinforcements 1.
2, and is also provided with shaft spacing retaining rings 76 at predetermined intervals in the axial direction. Each of the axial reinforcement spacing rings 76 is configured to caulk and hold each of the axial reinforcements 12 by protruding pawls 78 formed at required intervals in the circumferential direction.

There is an advantage that the shaft reinforcements 12 can be maintained at regular intervals when manufacturing the part body 16, and the strength can be increased.

That is, as an example of a mechanism for supplying the direction to the clip device 54 while maintaining appropriate intervals between the respective shaft reinforcements 12, the shaft reinforcement supporter 73 provided with the U-shaped holding piece 75 was previously described. What is proposed in place of the arrangement of 73 is the shaft spacing retaining ring 76 referred to herein. The apparatus for automatically manufacturing the cylindrical body 16 containing the shaft spacing retaining ring 76 is based on the device shown in FIG. .

For example, FIGS. 14 and 16 show a preferred embodiment of an apparatus for manufacturing a bodywork 6 containing a shaft spacing ring 76. As shown in FIGS. This device is basically based on the device shown in FIG. 1, but for example, the clip device i! It has a cylindrical ring support drum 84 passing through t54. On this ring support drum 84, a required number of shaft spacing retaining rings 76 are externally and closely supported. And the ring support drum 84
A ring pushing member 86 for sequentially and intermittently drawing out the shaft spacing retaining ring 76 is located on the front side of the ring group (on the left side in FIG. 16(a)).

This ring extrusion member 86 is an extrusion bar 8 that is inserted into a bar support tube 92 that is coaxially arranged on the coil holder 18 so as to be able to move forward and backward.
It is fixed to one end of 8. The other end of the push-out bar 88 is attached to a bar support stand 90 that is disposed on the fixed base 46 and is movable back and forth in the axial direction of the coil holder 18. A caulking device [80 for caulking the protruding pawls 78 of the muscle spacing retaining ring 76 to each corresponding shaft muscle 12 is arranged upright. The structure itself of this crimping device 80 is basically almost the same as the clip device 54 described above, and while the clip device 54 crimps the clip 64,
The caulking device [80 is used for caulking the protruding pawl 78. However, the clipping device 54 is equipped with a pair of clipping jaws 60 in order to caulk the clip 64 at two locations, but the caulking device 80 only requires that each protruding pawl 78 be caulked at one location. There are one jaw (not shown) for each head.

In this configuration, as shown in Fig. 16 (,), the axial muscle 1
If the bar support stand 90 is moved in the direction of the arrow at the required timing in accordance with the delivery and supply of the spiral reinforcement 2 and the spiral reinforcement 10, the plurality of shaft reinforcement spacing retaining rings 76 closely supported by the ring support drum 84 will be in a vertical position. are pushed out horizontally into the inside of the plurality of shaft reinforcements 12 one by one while holding the same. The extruded shaft reinforcement spacing retaining ring 76 has each protruding pawl 78 projecting in the circumferential direction located inside each shaft reinforcement 2, so that the projection against the shaft reinforcement 12 under the action of the caulking device R80. The claw 78 is caulked. Then, the shaft spacing retaining ring 76 is fed out and crimped at the required timing*
80 causes the axial muscle 1 to move as shown in Fig. I6(b).
A cylindrical body 16 as shown in FIG. 13 is obtained, in which shaft spacing retaining rings 76 are caulked and connected at required intervals inside the cylindrical body 2.

Function of the Embodiment Next, the function of the reinforcing member manufacturing apparatus according to the illustrated embodiment will be explained.6 As already explained with reference to FIG. For example, it is assumed that the spiral muscle coil 14 tightly wound with a circular cross section is transported to the manufacturing site of the a-body construction 6. This spiral muscle coil 1
4 is extrapolated onto the above-mentioned coil holder 18, and then the coil holder 18 is lifted up by means such as a crane and transported to the upper part of the cage manufacturing apparatus according to this embodiment. The coil holder 18 is then horizontally attached to a holder support stand 48 arranged in series on the fixed base 46 by means of bolts or the like. At this time, the spiral muscle sending device 70 is kept on standby until it does not interfere with the installation of the coil holder 18, and is returned to the current position when the installation is completed, as described above. It is.

Further, the shaft tensioning cart 30 is waiting at the current position described above, and its shaft end holding portion 38 is positioned opposite to the outlet side flange 22 of the coil holder 18 with a slight distance therebetween. There is. Furthermore, the cage support 82 shown in FIG. 1 has been lowered to a level below the horizontal frame 32 and is on standby.

In this state, as shown in FIGS. 1 and 2, a required number of axial reinforcements 12 are horizontally supplied on the axial reinforcement support stand 74. As shown in FIG.
■ Axial reinforcement insertion hole 28° of inlet side flange 20 in coil holder 18 ■ Axial reinforcement introduction path 24 defined between coil holder 18 and cylindrical sleeve 26 ■ Axial reinforcement insertion hole in outlet side flange 22 28 to the downstream side, and finally, as shown in FIG. 5, the spherical head of each shaft muscle 12 is inserted and set into the shaft muscle insertion hole 44 of the shaft muscle tip holding part 38. And the movable side disk 42 with respect to the fixed side disk 40.
When rotated by the required angle, both discs will move as shown in Figures 6(a) to (b).
), whereby the tip of each shaft reinforcement 12 is securely fixed to the shaft reinforcement tip holding portion 38 of the shaft reinforcement tensioning cart 30.

Further, as shown in FIG. 10(b), the downstream end of the spiral muscle coil 4 loaded on the coil holder 18 is.

It is located outward from the tip side of each axial muscle 12. Then, near the third turn from the beginning of the spiral muscle coil 14, the spiral muscle 10 and the axial muscle 12 are clipped together with a clip 64 as shown in FIG.

In this way, after the third roll of the spiral muscle coiler 4 is connected to the corresponding one shaft muscle, when the shaft muscle tension cart 30 in the current position is intermittently moved downstream, the tip of the shaft muscle The plurality of axial reinforcements 12 held by the holding part 38 are shown in FIG.
It will be drawn out to the downstream side as shown in c). In addition, the spiral muscle delivery device 70 operates, and the delivery piece 72
The spiral muscle coil 14 loaded on the coil holder 18 is sent forward at a required pitch. Therefore, the spiral muscle coil 14 is loosened in the axial direction from the tight state, and the spiral is axially moved outside of the plurality of axial muscles 12. will be expanded greatly.

Then, in the vicinity of each head 58 of the clip device 54, the intersection of the axial muscle ↓2 and the spiral muscle 10 is
As shown in the drawings and FIG. 9, the operation of the clipping jaws 60 causes the clips 64 to be crimped synchronously. In addition, in the example.

Although six axial reinforcements 12 are used, nine axial reinforcements 12 may be used as shown in the eleventh example. In this case, the head 58 on the movable side described above is in charge of attaching the clip 64 to the two shaft muscles 12, and the head 58 moves in an arc shape in the arc groove 59. Further, the head 58 on the fixed side generally clips the shaft reinforcement 2 and the spiral reinforcement 0 sequentially at their intersection points, but this may depend on design specifications.

It is also possible to clip every other or every second location. Furthermore, the head 58 on the movable side generally does not clip all the intersections of the axial muscle 2 and the spiral muscle 10, but clips them at predetermined intervals.

Note that each axial muscle 12 is supported by the U-shaped holding piece 75 of the axial muscle supporter 73 shown in FIG.
2 can closely intersect. Further, in FIG. 1, as the shaft tensioning table *30 horizontally pulls out the member 16 largely in the direction of the arrow, the member 16 bends downward near the center due to its own weight. After the shaft tensioning cart 30 passes above the cage support 82 which is waiting at a level below the horizontal frame 32, the cage support 82
2 is driven upward. As a result, the cage support 82 movably supports the horizontally drawn out part 16 and
prevent it from hanging downward.

Next, the operation of the modified apparatus shown in FIGS. 13 to 16 will be explained. In this case, basically the same function as the device shown in the drawing is performed, but the axial reinforcement spacing ring 76 described in connection with FIG. sent inward. Then, the caulking device 80 located on the downstream side caulks each protruding pawl 78 of the shaft spacing retaining ring 76 against the shaft reinforcement 12, whereby the part 16 shown in FIG. 13 is suitably manufactured.

Further, in this embodiment, a case has been described in which the clip device 54 is used as a means for fixedly connecting the portion where the axial muscle 12 and the spiral muscle 10 intersect. However, this is shown as a preferred example, and a device may also be used in which a binding wire such as a wire is automatically supplied to the intersection of the axial reinforcement 12 and the spiral reinforcement 10, and a fixed connection is achieved by twisting the wire. .

As described in detail, according to the method and apparatus for manufacturing a cage for reinforcing molded products according to the present invention, even spiral reinforcements made of high-strength steel can be manufactured without using large-scale equipment. Since it can be positioned in a spiral shape outside the striations, manufacturing costs can be kept low. It also has the advantage of greatly increasing the reinforcing effect in each rare concrete molded product. Although the example uses high-tensile steel, the spiral reinforcement and axial reinforcement are not limited to metal materials such as iron, and wire materials such as plastic may be used to reduce weight. In this case, the present invention can be applied as is.

Further, the spiral muscle coil does not have a circular cross section, and may have a rectangular or other polygonal shape. In this case, it is easy to wrap a helical wire with a polygonal cross section, which is difficult to achieve with conventional wrapping methods.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a schematic configuration of a part manufacturing apparatus as an example, which can suitably carry out the method for manufacturing a cage for reinforcing a molded product according to the present invention, and FIG. FIG. 3 is a longitudinal cross-sectional view showing the device in its original position on standby, and FIG. 4 @
5 is a partially cutaway perspective view showing the internal structure of the coil holder when it is attached to a stand. FIG. , FIG. 6(a) and FIG. 6(b) are sectional views taken along the line VI-VI shown in FIG. 5, FIG. 7 is a front view showing the arrangement of the head in the clip device, and FIG. , FIGS. 9(a) to 9(d) are enlarged perspective views showing one embodiment of the head in the clipping device, and FIGS. 1
Figure O (c) is a cross-sectional explanatory diagram showing the operating state of the part manufacturing device according to the embodiment, and Figure 11 shows the movable rod in the clip device moving to perform clip connection at another site. An explanatory diagram showing the state, FIG. 12 is a partially cutaway perspective view showing the state in which the axial muscle supporter is attached, FIG. I3 is a perspective view of a cylinder according to another embodiment, and FIG. 14 is a modified example. FIG. 15 is a schematic perspective view of the part manufacturing apparatus according to the modification, and FIG. 16(a) is a side view showing the overall configuration of the part manufacturing apparatus according to the modification.
And FIG. 16(b) is a cross-sectional explanatory view showing the operating state of the part manufacturing apparatus according to the modified example. 0... Spiral bar 12... Axial bar 4... Spiral bar coil 16... Molded product reinforcement cage 8.
... Coil holder 20 ... Inlet side flange 2 ... Outlet side flange 4 ... Axial reinforcement introduction path 26 ... Cylindrical sleeve 8 ...
Axial reinforcement insertion hole 30... Axial reinforcement tension trolley 2... Horizontal frame 38... Axial reinforcement tip holding part 6... Fixed base 4
8... Holder support stand 4... Clip device 58
... Head O ... Clipping jaw 4 ... Clip 70 ... Spiral muscle delivery device 2
...Feeding piece 74...Axis support stand 6...
・Axial muscle spacing holding ring O...Caulking device 82...Cage support FIG, 6 (al FIG, 5 1,...-1 12...Coelone muscle 0.7

Claims (1)

[Scope of Claims] [1] A plurality of axial reinforcements (12) extending substantially parallel to the circumferential direction at required intervals, and a spiral reinforcement (10) wound spirally around the outside of the axial reinforcements (12). ) and a cage for reinforcing molded products (16
), the wire rod to become the spiral muscle (10) is tightly wound in advance to form a spiral muscle coil (14), and inside this spiral muscle coil (14), A plurality of axial reinforcements (12) extending substantially parallel to the circumferential direction are supplied at required intervals, and in synchronization with the supply of the axial reinforcements (12) in the longitudinal direction, the spiral reinforcement coil (14) is supplied. A method for manufacturing a cage for reinforcing a molded product, which method comprises loosening the spiral reinforcement in the axial direction, and selectively joining the intersecting portions of the sequentially loosened spiral reinforcement (10) and each axial reinforcement (12). . [2] Molded product consisting of a plurality of axial reinforcements (12) extending substantially parallel to the circumferential direction at required intervals and a spiral reinforcement (10) wound spirally around the outside of the axial reinforcements (12). Reinforcement cage (16
), the apparatus includes: a shaft support stand (74) that supports the plurality of shaft reinforcements (12) so as to be freely delivered in the axial direction;
10); a coil holder (18) on which the spiral muscle coil (14) can be detachably loaded; Coil holder (18) loaded with 14)
The holder support stand (
48) and the tightly wound spiral muscle coil (14) to the axial muscle (12).
a spiral muscle feeding device (70) for loosening the spiral muscle in the axial direction at a required pitch in synchronization with the supply in the longitudinal direction; ), a coupling device (54) that selectively connects and fixes the intersection of the plurality of shaft reinforcements (10); 1. A manufacturing device for a cage for reinforcing a molded product, characterized by comprising: [3] Molded product consisting of a plurality of axial reinforcements (12) extending substantially parallel to the circumferential direction at required intervals and a spiral reinforcement (10) wound spirally around the outside of the axial reinforcements (12). Reinforcement cage (16
), the apparatus includes: a shaft support stand (74) that supports the plurality of shaft reinforcements (12) so as to be freely delivered in the axial direction;
10); a coil holder (18) on which the spiral muscle coil (14) can be detachably loaded; Coil holder (18) loaded with 14)
The holder support stand (
48) and the tightly wound spiral muscle coil (14) to the axial muscle (12).
a spiral muscle feeding device (70) for loosening the spiral muscle in the axial direction at a required pitch in synchronization with the supply in the longitudinal direction; ); and a coupling device (54) that selectively connects and fixes the intersections of the plurality of axial muscles (10); a retaining ring (76); a ring supply device (84, 86) that supports a large number of the axial reinforcement spacing rings (76) and supplies them to the inside of the plurality of axial reinforcements (10) at required intervals; a coupling device (80) that connects and fixes the axial muscle spacing ring (76) and the plurality of axial muscles (10); A manufacturing device for a cage for reinforcing a molded product, characterized in that it is comprised of a shaft tensioning cart (30) for supplying tension.