JPH0228412B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a tapered reinforcing bar cage for concrete poles, and more specifically, to a main cage in which the number of shaft reinforcing bars is gradually reduced toward the end end of the main cage. The present invention relates to a manufacturing method for continuously knitting a tapered reinforcing bar basket consisting of end baskets that are combined to form an extended shape on the sides, and an apparatus for manufacturing a tapered reinforcing bar cage used to carry out this manufacturing method.

<Conventional technology and its problems> Tapered reinforcing bar cages used for concrete poles can be roughly divided into two types depending on how the shaft reinforcing bars are treated to introduce prestress. Spiral bars are directly welded to the reinforcing bars, a reinforcing bar cage is formed by the axial reinforcing bars and the spiral bars, and prestress is directly introduced into the axial reinforcing bars.

The second method is to form a reinforcing bar using ordinary reinforcing wire and introduce prestress, instead of introducing stress into the shaft reinforcing bars of the tapered rebar cage.
In this method, the spiral reinforcement is not directly welded to the prestressed steel wire, but the prestressed steel wire is set in a separate process to the reinforcing bar cage.

This invention is applied to the formation of tapered reinforcing bar baskets in which prestressed steel wires are set in a separate process.

By the way, in general, the amount of reinforcing bars to reinforce the strength of concrete is called the reinforcing bar ratio, which is proportional to the cross-sectional area, and in the case of concrete poles, the diameter is different at the base and end. ,
By adjusting the number of reinforcing bars at the beginning and end, the ratio of reinforcing bars can be adjusted to ensure uniform strength and economic efficiency.

FIGS. 15 to 18 illustrate the structure of a reinforcing bar cage and the types and arrangement of shaft reinforcing bars for obtaining the above-mentioned reinforcing bar ratio in a concrete pole.

In the same figure, the reinforcing bar cage is constructed by a combination of a main cage 1 and a tip cage 2 disposed at the distal end of the main cage 1, and the main cage 1 includes shaft reinforcing bars A of different lengths.
are arranged in a circle as shown in FIG. 18 with their base ends aligned, spiral reinforcement B is wound around the outer periphery of these shaft reinforcing bars, and each fulcrum is welded.

Further, the tip cage 2 is formed by using a plurality of shaft reinforcing bars C having a smaller diameter than the shaft reinforcing bars A of the main body cage 1, and by winding and welding a spiral reinforcement B around the outer periphery of the shaft reinforcing bars C.

In the reinforcing bar cage having the above structure, the amount of shaft reinforcing bars gradually decreases toward the end, and the reinforcing bar ratio is the same in all cross sections.

Conventionally, the production of the above-mentioned reinforcing bar basket consists of a main body basket 1 knitted using thick shaft reinforcing bars A, and a thin shaft reinforcing bar C.
The tip basket 2 was knitted using the same, and the two were knitted separately, and both were connected with a binding wire D for use.

For this reason, naturally, in order to make the main basket and the tip basket,
Two knitting machines are required, and an operator must be assigned to each knitting machine.

In addition, in order to combine and bind two baskets in a separate process, a considerable amount of manpower and a place for final processing, processing, and storage of finished products are required, resulting in high work and equipment costs and a large work space. The problem is that we have to ensure that.

<Means for Solving the Problems> In order to solve the above-mentioned problems, the present invention feeds a plurality of shaft reinforcing bars for end cages cut to a certain length into a tapered reinforcing bar cage knitting machine, By winding spiral reinforcement around the outer periphery of the plurality of shaft reinforcing bars for the tip and welding their intersections, a tapered tip cage is formed from the small diameter end to the large diameter base, and this tip cage is During the formation of the main cage, a plurality of shaft reinforcing bars for the main cage of different lengths arranged in a predetermined arrangement with their respective ends constituting the large diameter end of the main cage were aligned and From the end that will be the mouth side, feed it toward the base of the tip basket being knitted by the knitting machine to form the distal end of the main cage shaft reinforcing bar and the base end of the tip cage shaft reinforcing bar. By wrapping the spiral reinforcement continuously from the outer periphery of the shaft reinforcing bar group for the tip cage to the outer periphery of the shaft reinforcing bar group for the main cage, and welding the intersection points, the tip cage and the main cage are connected to the continuous spiral reinforcement. Provided is a method for manufacturing a tapered reinforcing bar cage for a concrete pole, characterized in that the tapered reinforcing bar cage for a concrete pole is knitted continuously and integrally from the base end of the tip cage to the base end of the main cage via the distal end of the main cage by winding. It is something to do.

In addition, in order to solve the above problem, this invention involves winding a spiral reinforcement around the outer periphery of a shaft reinforcing bar that moves in the axial direction, welding the intersection points of each shaft reinforcement and the spiral reinforcement, and creating a taper that feeds out with the end of a small diameter as the beginning. A reinforcing bar cage knitting machine, a tip cage shaft reinforcing bar supply mechanism for cutting a plurality of shaft reinforcing bars for the tip cage into predetermined lengths and supplying the plurality of shaft reinforcing bars for the tip cage to the knitting machine, and a plurality of shaft reinforcing bars for the main cage. Cut the main cage shaft reinforcing bars into various lengths, arrange the cut shaft reinforcing bars for the main cage in a predetermined arrangement, and align each end that will become the base end of the main cage to the end end of the main cage shaft reinforcing bars. It consists of an axial reinforcing bar supply mechanism for the main cage that supplies the material from the side end to the knitting machine, and the axial reinforcing bar material for the main cage is fed out in the axial direction to sequentially lengthen it to the required length. A straight line cutting machine that cuts, an automatic feeding mechanism that receives the shaft reinforcing bars discharged from the cutting machine, supports them in a parallel state in the cutting order, and transfers them; An alignment table is used to send out the axial reinforcing bars in the direction, and the shaft reinforcing bars sent out from this alignment table are received, and the feeding is limited according to the length of each axial reinforcing bar. The present invention also provides an apparatus for manufacturing tapered reinforcing bars for concrete poles, which is configured in combination with an inserter that feeds the reinforcing bars from the side ends into the knitting machine.

<Operation> First, a predetermined number of shaft reinforcing bars for the tip basket are fed into the knitting machine at the same time, and each shaft reinforcing bar is cut to a certain length, and a spiral bar is wound and welded around the outer circumference of the shaft reinforcing bar to form the tip. The basket is knitted from the end side, and when the knitting of the tip basket is nearing the end, the shaft reinforcing bar for the main basket is supplied from the main basket shaft reinforcing mechanism to the knitting machine, and the spiral reinforcement is continuously wound. By welding, the main basket is continuously knitted from the end basket following the tip basket.

The shaft reinforcing bar supply mechanism for the main body cage uses a linear cutter to sequentially cut the shaft reinforcing bars while changing the cutting length according to the order of arrangement, and then arranges each shaft reinforcing bar in parallel on an alignment table in the cutting order. This is sent out in the axial direction, and the insertion machine that receives this shaft reinforcing bar adjusts the length of each shaft reinforcing bar and limits the feeding, and in order from the longest shaft reinforcing bar, the feeding is delayed by the difference in length, and the end side is aligned. In this state, the shaft reinforcing bars are fed into the knitting machine, and the main basket is knitted from the end side.

<Example> Hereinafter, an example of the present invention will be described based on the accompanying drawings.

FIG. 1 shows the overall arrangement of the tapered reinforcing bar basket manufacturing device, in which an axial reinforcing bar supply mechanism 21 for the tip basket is located on the axial reinforcing bar supply side of the tapered reinforcing bar basket knitting machine 11.
A shaft reinforcing bar supply mechanism 31 for the main body cage is arranged,
Travel platform 12 installed on the rebar basket drawer side of the knitting machine 11
A pull-out truck 14 is provided on the top, which is movable forward and backward relative to the knitting machine 11 and is equipped with a chuck mechanism 13 made of shaft reinforcing bars.

The above-mentioned knitting machine 11 supports a large number of axial reinforcing bars in a circular axial arrangement using an expansion/contraction mechanism, and expands and moves the arrangement diameter in proportion to the amount of axial movement, although details are omitted from illustration. It has a well-known structure in which a tapered reinforcing bar cage is formed by winding a spiral reinforcing bar around the outer periphery of a group of axial reinforcing bars and welding each fulcrum of the axial reinforcing bar and the spiral bar using electrodes.

Further, the pull-out cart 14 is used to clamp the end end of the shaft reinforcing bars in the reinforcing bar basket sent out from the knitting machine 11 using the chuck mechanism 13, and transport the reinforcing bar cage forward. It is carried out of the line by a crane-type cage lifting device 15.

As shown in FIGS. 1, 2, and 3, the shaft reinforcing bar supply mechanism 21 for the tip basket draws out raw shaft reinforcing bars from the coils C', which are equal in number to the shaft reinforcing bars C of the tip basket 2. is sent toward the knitting machine 11 by a pair of pinch rollers 22, and the feeding length of the shaft reinforcing bar is measured by a pulse generator in conjunction with the shaft of the pinch roller 22, and the feeding is stopped or stopped based on the measurement signal of the set length. The knitting machine 11 arranges the fed shaft reinforcing bars C in a circular shape, winds the spiral reinforcing bars B around the outer circumference, and knits the tip basket 2 from the end. .

Next, the shaft reinforcing bar supply mechanism 31 for the style basket straightens the shaft reinforcing bar A pulled out from the coil 32 into a straight line, sends it forward, and cuts it into a commanded length. A length detection mechanism 34 is located in front of the cutting machine 33 and detects the length of the shaft reinforcing bar A sent out from the cutting machine 33 and operates the cutting machine 33. An automatic supply mechanism 35 receives the shaft reinforcing bars discharged from the detection mechanism 34 and supports them in a parallel state in the cutting order, and lifts and transfers the parallel shaft reinforcing bars A group, and the shaft reinforcing bars A fed by the automatic feeding mechanism 35. An alignment table 36 receives the groups in parallel and sends them forward in the axial direction, and receives the shaft reinforcing bars A group sent out from the alignment table 36, and arranges shaft reinforcing bars of the same length into long shafts for each group. It is composed of an insertion machine 37 that sequentially feeds the reinforcing bars toward the knitting machine 11 while delaying the delivery by the difference in length, and supplies the shaft reinforcing bars A group to the knitting machine 11 with the base ends aligned,
The alignment table 36 and the insertion machine 37 are arranged in a plane on the line of the knitting machine 11.

The straight line cutting machine 33 is a shaft reinforcing bar straightening machine 38.
and a flying cutter 40 that stores force in a flyhole 39 to shear the shaft reinforcing bar A, and cuts the shaft reinforcing bar in response to a signal from a length detection mechanism 34, which will be described later.

As shown in FIGS. 4, 5, and 6, the length detection mechanism 34 has a rod 41 that receives the shaft reinforcing bar A sent out from the straight cutter 33, and is arranged in front of the cutter 33. A stopper mechanism 42 is fixed to the upper part of the rod 41 at predetermined intervals in the longitudinal direction.

The stopper mechanism 42 is formed by attaching a stopper 45 that moves up and down within the rod 41 to the lower end of a piston rod 44 of a cylinder 43 fixed on the rod 41, and each stopper mechanism 42 is configured to cut a cutting length according to a command from a control panel. The stopper 45 at the corresponding position is activated to lower the stopper 45, and when the tip of the shaft reinforcing bar A comes into contact with the stopper 45, the switch detects this and sends a signal to the straight cutter 33, cutting the length of each length. Axial reinforcement is now available.

Each stopper mechanism 42 is installed, for example, at a position 7 m, 8 m, etc. from the center of the cutter blade of the cutting machine 33, and cuts various lengths according to commands, and the types and order of cutting lengths are as follows: For example, the 17th
The arrangement of shaft reinforcing bars A is set as shown in the figure.

The rod 41 of the length detection mechanism 34 opens and closes every time cutting is completed, and the supply mechanism 35 that transfers the shaft reinforcing bars A discharged from the rod 41 to the alignment table 36 is operated as shown in FIGS. 7 and 8. A slope guide 5 receives the shaft reinforcing bar A that has been dropped and discharged from the rod 41 directly below the rod 41.
1 is provided on the tip side of the slope guide 51, and an endless conveyor 52 that supports and intermittently transfers the shaft reinforcing bars A transferred from the slope guide 51 in parallel in the order of transfer, and parallel shafts on the conveyor 52. It is configured by arranging a transfer machine 53 that lifts and transports a group of reinforcing bars.

The endless conveyor 52 has a sprocket 54 disposed close to the tip of the slope guide 51.
and sprockets 55 and 56 located above and below the front on the right side of FIG.
A holding part 60 for the shaft reinforcing bar is formed between the projecting pieces 59 protruding from each link 58 of the chain 57, and the holding part of the upper running part receives the shaft reinforcing bar, and it is sequentially conveyed to the position on the tip side. I'm starting to do that.

The transfer machine 53 has a horizontal rail 62 supported by a frame 61 so as to be movable up and down, which is moved up and down by a pinion 63 and a rack 64, and a cart 65 placed on the rail 62 so as to be movable forward and backward. It is formed by providing a parallel support stand 66 on the upper part, and the parallel support stand 66 is located directly below the tip of the endless conveyor 52, as shown by the solid line in FIG. It circulates between the standby position and the forward position where it has moved to the line portion of the alignment table 36, as shown by the dashed line in the figure, in the order of arrows X to Y in the figure.

The parallel support stand 66 has concavities lined up on its upper surface with the same pitch as the holding parts 60 in the endless chain 57 for the number of shaft reinforcing bars, and by rising from the standby position, the parallel support stand 66 supports group A of shaft reinforcing bars parallel to the tip of the conveyor 52. The robot is then lifted up as it is and transported to the forward position.

As shown in FIG. 9, the alignment table 36 that receives the group A of shaft reinforcing bars made up of the transfer machine 53 includes a corrugated alignment plate 71 having the same pitch as the holding part 60 of the endless chain 57, and this alignment plate 71. When the parallel support base 66 of the transfer machine 53 moves downward from the forward position in the direction of the arrow Y, each axial reinforcing bar A is connected to the alignment plate. 71 and supported by a motor pulley 72, and when the motor pulley 72 is activated, each shaft reinforcing bar A is simultaneously sent out in the axial direction toward the insertion machine 37.

The knitting machine 1 receives the shaft reinforcing bars A group from the alignment table 36.
The insertion machine 37 that feeds the
The structure is shown in Fig. 3, in which a stopper mechanism 82, an insertion drive roller mechanism 83, a feed-out restriction mechanism 84 are provided in front of the shaft reinforcing bar entry guide 81.
It consists of a combination of a drive roller mechanism 83 and a drive section 85.

The stopper mechanism 82 is formed so that the stopper 87 is moved up and down by a cylinder 86 with respect to the moving line of the shaft reinforcing bars A group, and when the shaft reinforcing bars A group are sent out from the alignment table 36, the stopper 87
is waiting at the lowered position, and the end of the shaft reinforcing bar A comes into contact with the stopper 87, so that it stops with its end ends aligned, and when the end ends are aligned, the stopper 8
7 rises, allowing the shaft reinforcing bar A to move forward.

The insertion drive roller mechanism 83 is located in front of the stopper mechanism 82 and consists of a combination of a drive roller 88 and a presser roller 90' that is moved up and down by a cylinder 89. A number of rollers 91 equal to the number of shaft reinforcing bars A are attached to one shaft 90 so as to rotate independently.
Each roller 91 is connected to a roller drive unit 85 as shown in FIG.
Power is transmitted from a motor 92 via a clutch 93 to sprockets 94, 95 and a chain.

Further, as shown in FIG. 13, the presser roller 90' is
A number of rollers 97 equal to the number of shaft reinforcing bars A are provided on the shaft 96.
are mounted side by side, and the shaft reinforcing bar A is sent forward by the pressure applied by the upper and lower rollers 88, 90' by the air cylinder 89. The feed-out limiting mechanism 8
4 changes the timing of sending out each shaft reinforcing bar A for each length so that the end ends of the shaft reinforcing bars A group are aligned by the stopper mechanism 82, so that the base ends of the shaft reinforcing bars A are aligned. When shaft reinforcing bars of four different lengths as shown in the figure are used, three shutters 98, 99, and 100 are used, and each shutter is configured to be moved up and down independently by a cylinder 101. .

Fig. 14 shows the length types and arrangement of shaft reinforcing bars A and the shape of each shutter 98, 99, 100. Since the shaft reinforcing bar A ₁ is sent out from the beginning, a shutter is not required, and the first, second,
When the third shutters 98, 99, and 100 are placed in the lowered position, only the first shaft reinforcing bar A is fed out.

For example, the first shutter 98 is formed to restrict the shortest No. 4 shaft reinforcing bar A ₄ , the second shutter 99 restricts the No. 3 shaft reinforcing bar A ₃ , and the third shutter 100 is formed to restrict the No. 3 shaft reinforcing bar A _2. a third shutter 100;
The second shutter 99 and the first shutter 98 are pulled up in this order, and the delivery of the shaft reinforcing bars of each length is delayed by the difference in length, and the shaft reinforcing bars A are sent to the knitting machine 11 with the base end of each shaft reinforcing bar A aligned. become.

In addition, the detection of the length of the shaft reinforcing bar A of each length is performed by the first
Each shaft 102, 1 of the roller drive unit 85 shown in FIG.
03, 104, and 105 by moving the pulse generator 106 and detecting the feed amount in proportion to the number of rotations of the drive roller 88. Starting from the longest shaft reinforcing bar, the feed is delayed by the length difference.

The manufacturing apparatus of the present invention has the above-mentioned configuration, and first, four shaft reinforcing bars C are cut into a predetermined length by the shaft reinforcing bar supply mechanism 21 for the tip basket and fed into the knitting machine 11, and the shaft reinforcing bars C A spiral muscle B is wound around the outer circumference of the group, and a tip basket 2 is knitted from the distal end.

Next, the shaft reinforcing bar supplying mechanism 31 for the main body basket cuts the shaft reinforcing bars pulled out from the coil 32 into shaft reinforcing bars of different lengths using a linear cutter 33 according to the arrangement order shown in FIGS. 14 to 18. The shaft reinforcing bars A are cut in order, and the cut shaft reinforcing bars A are arranged on the alignment table 36 in the cutting order by the supply mechanism 35, and the shaft reinforcing bars A group fed by the alignment table 36 toward the insertion machine 37 are placed in the stopper. The mechanism 82, the insertion drive roller mechanism 83, and the feed-out limiting mechanism 84 feed the basket into the knitting machine 11 with the main end aligned, and as shown in FIG. The arrangement is such that it overlaps with the shaft reinforcing bar C of the tip cage 2 of A, and the spiral reinforcement B is continuously wound and welded, so that the main cage 1 is connected to the tip cage 2 continuously by the spiral reinforcement B. The shaft iron basket, which is organized in a vine shape, will be completed.

<Effects> As described above, according to the present invention, tapered reinforcing bar cages for concrete poles consisting of a tip cage and a main cage can be continuously knitted using a single knitting machine, reducing equipment costs and labor. Therefore, it is possible to reduce product costs.

Further, since the tapered iron baskets can be continuously knitted with one knitting machine, there is no need for space for separately storing the tip basket and the main basket.

[Brief explanation of drawings]

FIG. 1 is a plan view of the manufacturing apparatus according to the present invention, FIG. 2 is a plan view of the shaft reinforcing bar supply mechanism for the tip cage, and FIG.
The figure is a side view of the same as above, FIG. 4 is a plan view of the straight line cutting machine and the length detection mechanism, FIG. 5 is a front view showing the stopper of the length detection mechanism, and FIG. 6 is a longitudinal side view of the same as above.
Fig. 7 is a longitudinal sectional front view of the automatic feeding mechanism, Fig. 8 is an enlarged explanatory view of the main parts of the same, Fig. 9 is a longitudinal sectional view of the alignment table, Fig. 10 is a front view of the insertion machine, and Fig. 11. is a side view of the same as above, FIG. 12 is a plan view of the drive unit in the same as above, FIG. 13 is an enlarged cross section of the drive roller portion, FIG. 14 is an explanatory diagram showing the length relationship between the shutter plate and the shaft reinforcing bars, and FIG. 18 are explanatory diagrams showing the structure of the reinforcing bar cage of the concrete pole and the types and arrangement of shaft reinforcing bars, and FIG. 19 is a perspective view showing the connecting portion between the tip cage and the main cage. DESCRIPTION OF SYMBOLS 1... Main body basket, 2... Tip basket, 11... Knitting machine, 21, 31... Shaft reinforcing bar supply mechanism, 32... Coil, 33... Straight line cutting machine, 33... Length detection mechanism, 35... ... Automatic supply mechanism, 36 ... Alignment table, 3
7... Winding machine.

Claims (1)

[Scope of Claims] 1. A plurality of shaft reinforcing bars for tip cages cut to a certain length are fed into a tapered reinforcing bar cage knitting machine, and a spiral bar is wound around the outer periphery of the plurality of shaft reinforcing bars for tip cages. By welding the intersection points, a tapered tip basket is formed from the small diameter end to the large diameter base.
In the middle of forming this tip cage, a plurality of shaft reinforcing bars for the main cage with different lengths arranged in a predetermined arrangement with their respective ends constituting the large-diameter base side of the main cage are aligned, are inserted into the main cage. From the end of the small-diameter end, feed it toward the base of the tip basket being knitted by the knitting machine to remove the distal end of the main cage shaft reinforcing bar and the bottom end of the tip cage shaft reinforcing bar. The spiral reinforcement is wound continuously from the outer periphery of the shaft reinforcing bar group for the tip cage to the outer periphery of the shaft reinforcing bar group for the main cage, and the intersection points are welded to connect the tip cage and the main cage to the spiral reinforcement. A method for manufacturing a tapered reinforcing bar cage for a concrete pole, which is characterized in that it is continuously and integrally knitted from the base end of the tip cage to the base end of the main cage via the distal end of the main cage by continuous winding. . 2. A tapered reinforcing bar cage knitting machine that winds a spiral bar around the outer periphery of a shaft reinforcing bar that moves in the axial direction, welds the intersection of each axial bar and the spiral bar, and sends it out with the small-diameter end as the beginning, and a plurality of tapered bar basket knitting machines for the tip cage. A shaft reinforcing bar supply mechanism for a tip basket that cuts main shaft reinforcing bars into predetermined lengths and supplies them to the knitting machine; and a shaft reinforcing bar supply mechanism for cutting a plurality of shaft reinforcing bars for the main cage into various lengths and supplying the cut main cages to the knitting machine. Supply the shaft reinforcing bars for use to the knitting machine in a predetermined arrangement state and from the ends that become the end end of the main body cage shaft reinforcing bars with each end that becomes the mouth end of the main cage aligned. The axial reinforcing bar supply mechanism for the main body cage feeds out the axial reinforcing bar material in the axial direction and sequentially cuts it into required lengths, and the linear cutting machine, and discharges the material from the cutting machine. an automatic feeding mechanism that receives the shaft reinforcing bars that have been cut, supports them in a parallel state in the cutting order, and transfers them; an alignment table that receives the shaft reinforcing bars in a parallel state and sends them out in the axial direction in this state; An insertion machine that receives the sent-out shaft reinforcing bars, limits the sending out according to the length of each shaft reinforcing bar, and feeds each shaft reinforcing bar from the end end into the knitting machine with the main end of each shaft reinforcing bar aligned. A manufacturing device for tapered reinforcing bars for concrete poles, which is configured in combination with.