JPH0116228B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for knitting a wire mesh.

[Conventional technology]

The wire mesh for manufacturing reinforcing reinforcing bars for lightweight aerated concrete plates is made by welding horizontal reinforcing bars at predetermined intervals on top of multiple parallel vertical reinforcing bars. Generally, horizontal reinforcing bars are provided on top of the reinforcing bars, and the vertical reinforcing bars and horizontal reinforcing bars are welded together. When this method is used to automatically organize wire mesh, conventionally, as seen in Japanese Patent Publication No. 53-22062 and Japanese Patent Publication No. 53-34599, vertical reinforcing bars are intermittently fed longitudinally, and the In addition to straightening coiled reinforcing bars by effectively utilizing tension,
Weld the vertical reinforcing bars and horizontal reinforcing bars every time the vertical reinforcing bars stop feeding.
Next, the vertical reinforcing bars were cut to a predetermined length.

[Problem to be solved by the invention]

However, the internal strain that occurred during straightening remains in the straightened vertical reinforcing bars. Therefore,
When the horizontal reinforcing bars are welded, the internal strain is doubled due to welding, causing the horizontal reinforcing bars to bend in an out-of-plane direction during the formation of the wire mesh. For this reason, in the conventional welding method of welding vertical and horizontal reinforcing bars by applying current to multiple electrodes from one transformer, the pressure applied to the reinforcing bars differs at each welding point, making it impossible to adjust the current value at each electrode. It was difficult to obtain a specified welding quality. Moreover, as mentioned above, when the vertical reinforcing bars are bent, the wire mesh is greatly warped, resulting in poor product precision and a problem in product quality. In addition, it is necessary to install a larger number of spare coiled reinforcing bars than the number of vertical reinforcing bars, and the equipment space is extremely large, which limits the ability to make the device more compact.

[Purpose of the invention]

The present invention was devised to solve the above problem, and eliminates the cause of warping of wire mesh by using vertical reinforcing bars in which coiled reinforcing bars are straightened and then cut to a certain length to eliminate internal strain. It is an object of the present invention to provide a method and apparatus capable of knitting a high-quality wire mesh by horizontally feeding the vertical reinforcing bars to a transfer line for knitting the wire mesh. In addition, the present invention uses vertical reinforcing bars cut to a predetermined length to produce a wire mesh used for manufacturing a reinforcing reinforcing bar cage for lightweight cellular concrete as shown in FIG. It is an object of the present invention to provide a method and apparatus capable of efficiently knitting a wire mesh having a first and last transverse reinforcing bar near the front and rear ends of the wire mesh.

[Means to solve the problem]

The method of the present invention is as follows: (A) Cut vertical reinforcing bars of a predetermined length are fed one by one onto an endless conveyor with claws, and the conveyor is used to place a plurality of vertical reinforcing bars in a predetermined position on a temporary reinforcing bar holder. A process of vertically feeding the reinforcing bars while maintaining the parallel state of the vertical reinforcing bars when there are no reinforcing bars at the bottom of the temporary reinforcing bars. (B) The process of vertically feeding the supplied vertical reinforcing bars toward the welding machine. (C) A process in which vertical reinforcing bars are sequentially moved using a movable gripper that is installed in front of the welding machine's electrode and can move back and forth at predetermined intervals. (D) A process in which vertical reinforcing bars are sequentially moved by a movable gripper that has a stopper after the electrode of the welding machine, independent of the movable gripper mentioned above. (E) Process of supplying horizontal reinforcing bars one by one to the electrode position of the welding machine. (F) Process of welding the horizontal reinforcing bars to the vertical reinforcing bars at the electrode position of the welding machine. This is a method for knitting a wire mesh, characterized by comprising at least the steps (A) to (F) above.

The apparatus of the present invention also includes a cross-feeding device 5 that feeds cut longitudinal reinforcing bars 2 of a predetermined length in parallel at predetermined intervals, and A vertical reinforcing bar feeding device 3 consisting of a vertical feeding device 4 that vertically feeds the reinforcing bar group 2A to the vertical reinforcing bar transfer device 1; Vertical reinforcing bar transfer device 1
and a horizontal reinforcing bar feeding device 6 that supplies horizontal reinforcing bars at predetermined intervals onto the vertical reinforcing bars fed vertically via the vertical reinforcing bar transfer device 1, and converting the horizontal reinforcing bars supplied via the horizontal reinforcing bar feeding device 6 into vertical reinforcing bars. The horizontal feeding device 5 is equipped with a welding machine 8 that performs welding each time the feeding is stopped, and the horizontal feeding device 5 is equipped with a device that feeds cut vertical reinforcing bars 2 of a predetermined length onto an endless conveyor 44 with claws one by one, and an endless conveyor 44 with claws. The vertical reinforcing bar parallel device consists of a conveyor 44 with claws and a reinforcing bar temporary cradle 45, and the longitudinal reinforcing bar transfer device 1 includes a stopper 24 in the advancing direction provided in front of the electrode position of the welding machine 8.
a movable gripper 12 that can move back and forth between the welding machine 8 and a stopper 25 in the backward direction, and a plurality of rods 22a that are provided independently of the movable gripper 12 at a stage downstream from the electrode position of the welding machine 8 and that are retractable. This is a wire mesh knitting device characterized by comprising a movable gripper 11 having a cylinder 22 as a stopper in the direction of movement.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of the apparatus of the present invention will be explained below with reference to an illustrated embodiment.

1 and 2 schematically show the arrangement and configuration of the devices, and the device shown in FIG. The apparatus of the present invention comprising a wire mesh stacking device 9 further includes a wire mesh stacking device 9.

As can be seen in FIG. 1, the vertical reinforcing bar supplying device 3 includes a transverse feeding device 5 that feeds cut longitudinal reinforcing bars 2 of a predetermined length by horizontally feeding them and arranging them in parallel at a predetermined interval.
A vertical feeding device 4 that supplies the longitudinal reinforcing bars 2A arranged in parallel and sent by the device 5 to the vertical reinforcing bar transfer device 1.
It is made up of.

Further, the lateral feed device 5 is shown in FIGS. 1, 5, and 8.
As shown in FIG. 9, there is a device for feeding cut vertical reinforcing bars 2 of a predetermined length onto an endless conveyor 44 with claws one by one, and a device that feeds cut vertical reinforcing bars 2 of a predetermined length onto an endless conveyor 44 with claws and a reinforcing bar temporary pedestal 45. It consists of a vertical reinforcing bar parallel device. Furthermore, Fig. 5 is a front view showing in detail the reinforcing bar feeding device shown in Fig. 1 together with the incidental equipment, Fig. 6 is its right side view, and Fig. 7 is a detailed view of the reinforcing bar feeding device shown in Fig. 5. 8 is a perspective view of the main part of FIG. 5, and FIG. 9 is an enlarged front view of the main part of FIG. 5.

As shown in these drawings, in the horizontal feeding device 5 of the vertical reinforcing bar supplying device 3, a device that feeds cut vertical reinforcing bars 2 of a predetermined length onto an endless conveyor 44 with claws one by one is used. , Fig. 5, Fig. 6, Fig. 8, and Fig. 9, particularly Fig. 8 and Fig. 9.
As clearly shown in the figure, it is composed of a stock chute 36 and a disc-shaped supply cam 37. That is,
Stock shoot 36 of vertical reinforcing bar 2 as shown in the drawing
A plurality of disc-shaped supply cams 37 that can rotate in synchronization with each other while blocking the lower end of the chute are installed at the lower stage of the rotating shaft 3.
9. Note that the rotating shaft 39 is supported by a pedestal 38 shown in FIG. Further, these supply cams 37 are provided with engagement recesses 40 for discharging reinforcing bars that correspond to each other at intervals on the circumferential surface.
engaging with a pawl 43 that is caused to slide through the
The supply cam 37 is configured to ratchet drive at the interval between the engagement recesses 40, 40. The vertical reinforcing bars 2 having a predetermined length thus cut are fed one by one onto an endless conveyor 44 with claws, which will be described later.

In the apparatus shown in FIG. 5, a hopper 50 to which vertical reinforcing bars 2 are supplied from a reinforcing bar feeder 49 is located on the right end side of the apparatus, and a hopper 50 is provided with vertical reinforcing bars 2 on a diaphragm 33, which will be described later.
It is located so that it can be supplied at a low height.

Further, as an auxiliary device to the horizontal feed device 5 of the vertical reinforcing bar supply device 3, a conveyor 35 with a diaphragm 33 and a magnet 34 is provided as shown in FIG.
Incidentally, FIG. 7 is a plan view of this portion. That is, in the apparatus shown in FIG. 5, a diaphragm 33 to which vibration is applied via a vibrator 32 is present at the upper right end side, and a plurality of conveyors 35 having magnets 34 around the periphery are located below the diaphragm 33 as shown in FIG. The base is set up. A plurality of longitudinal reinforcing bars are supplied to this device from a hopper 50, and the longitudinal reinforcing bars 2 of a predetermined length cut by this device are vibrated via a diaphragm 33 to loosen the mutual entanglement of the vertical reinforcing bars 2. At the same time, it is attracted and moved via a magnet 34, and can be supplied to a stock chute 36 shown in FIGS. 5, 8, and 9 by lateral feeding.

At the lower stage of the supply cam 37, as shown in FIGS. 8 and 9, there is an endless conveyor 44 with claws.
Additionally, a vertical reinforcing bar parallel arrangement device consisting of a reinforcing bar temporary pedestal 45 is provided. That is, a plurality of conveyors 44 with claws are provided endlessly so that their upper and lower parallel parts 44A, 44B can be intermittently replaced and driven. Then, the above-mentioned supply cam 37, which supplies the vertical reinforcing bars 2 one by one onto the conveyor 44 with claws, is controlled via the air cylinder 42 to select between predetermined claws 44a of the conveyor 44 and provide vertical reinforcing bars 2 thereon. 2 is supplied. Furthermore, as shown in FIG. 9, a reinforcing bar temporary pedestal 45 is provided in contact with the lower surface of the endless conveyor 44 with claws. The reinforcing bar temporary cradle 45 consists of a plurality of inverted L-shaped movable pieces 48 arranged in a row on the pedestal 38 at intervals slightly larger than the thickness of the vertical reinforcing bars 2, as shown in FIGS. 9 to 12. It protrudes upward so that it is flush with the surface.

The vertical reinforcing bars 2 arranged in parallel at a predetermined interval on the upper parallel portion 44A of the endless conveyor 44 with claws are attached to the lower part of the conveyor 44 by using the claws 44a of the conveyor 44 as reinforcing bar stoppers. They are arranged in parallel at predetermined intervals on a reinforcing bar temporary pedestal 45 provided in contact with the parallel portion 44B. The plurality of vertical reinforcing bars 2 arranged in parallel via the conveyor 44 are moved to the movable piece 48 between the fixed pieces 46 and 46 of the reinforcing bar temporary cradle 45, respectively.
is configured to be supported above. This state is shown in FIG. As shown in FIG. 11, when the movable piece 48 is moved by the operating member 47, the member 47
Even if the vertical reinforcing bars 2 are moved, the vertical reinforcing bars 2 do not move laterally, and the vertical reinforcing bars 2 are kept parallel to the fixed pieces 46, 4.
6 and falls into the groove 2 of the feed roller 30, which will be described later.
The vertical reinforcing bars 2 can be placed at 9.

In this way, in the illustrated device, the horizontal feed device 5 of the vertical reinforcing bar supply device 3 includes a stock chute 36, a disk-shaped cam 37 having an engagement recess 40 provided at the lower stage thereof, and a plurality of It is composed of an endless conveyor 44 with claws and a reinforcing bar pedestal 45 provided in contact with the conveyor 44.

The vertical feed device 4 of the vertical reinforcing bar supply device 3 is shown in FIG.
As shown in FIG. 6, a plurality of feed rollers 30 and rotating electromagnets 31 have corresponding engagement grooves 29 (for example, n grooves 29) at predetermined intervals on the circumferential surface for stationary support of reinforcing bars, and are arranged in parallel. It is a device for vertically feeding the parallel vertical reinforcing bars 2 supplied by the horizontal feeding device 5 of the vertical reinforcing bar supplying device 3, and is a device for sending them to the vertical reinforcing bar transferring device 1 in the next process. In the apparatus shown in the drawings, in addition to the feed roller 30 provided on the frame 38, there are also rollers so that the longitudinal reinforcing bars 2 can be fed into the vertical reinforcing bar transfer guides 26, 26' shown in FIG.
As seen in FIGS. 1, 2, and 3, a rotating electromagnet 31 is provided in parallel with the feed roller 30 on the side of a movable gripper 12, which will be described later. These rollers 30 and 31 can be freely rotated and stopped in synchronization. When the rotary electromagnet 31 is provided in this manner, as will be described later, the vertical reinforcing bar group 2 can be moved up to the position of the stopper 28 seen in FIG.
A can be fed vertically.

The vertical reinforcing bar transfer device 1 is a device that grasps a plurality of parallel vertical reinforcing bars 2 supplied from a vertical feeding device 4 and intermittently transports them vertically.
It is configured as shown in the figure.

That is, the vertical reinforcing bar transfer device 1 has a welding machine 8 which will be described later.
The movable gripper 12 is provided in front of the electrode position of the welding machine 8, and the movable gripper 11 is provided in the rear stage of the electrode position of the welding machine 8. A movable gripper 12 provided in front of the electrode position of the welding machine 8 can move back and forth at a predetermined interval, and in order to sequentially move the vertical reinforcing bars 2A, a stopper 24 in the advancing direction and a stopper in the backward direction are provided. 25, and can move forward and backward between these stoppers. In addition, a movable gripper 11 provided after the electrode position of the welding machine 8
is provided independently of the above-mentioned movable gripper 12, has a plurality of selectable stoppers in the direction of movement, and sequentially moves the vertical reinforcing bars. That is, the rod 22a that can be withdrawn
It has a cylinder 22 attached as a stopper in the traveling direction.

Movable gripper 11 shown in FIGS. 2 and 3
is configured to be able to freely move forward and backward in the reinforcing bar transfer direction, to grip each vertical reinforcing bar 2 when moving forward, and to release when moving backward. Furthermore,
Upon final release and retreat of the movable gripper 11,
If necessary, the wire mesh 10 may be taken up by a conveyor provided in front of the reinforcing bar stacking device 9 as shown in FIG. The cylinders 17 and 18 are not provided and are fixed.) may be placed further downstream.

Like the movable gripper 11, the movable gripper 12 can move forward and backward in the vertical reinforcing bar transfer direction, and is configured to grip each vertical reinforcing bar 2 when moving forward, and to release it when moving backward.

In addition, each gripper is provided with a pedestal 13 along the upper part of which the vertical reinforcing bar 2 crosses, as shown in FIG. 3 and as shown in FIG. 4, which shows the gripper 12 as a representative example. A vertical air cylinder 14 is provided at the bottom. Further, the pedestal 13 is provided with a presser foot 15 that is movable up and down by the operation of these air cylinders 14. This presser foot 15
The vertical reinforcing bars 2 are gripped and released by moving up and down. Further, in the movable grippers 11 and 12 shown in FIG. 4, the pedestal 13 is connected to the guide 1 as shown in FIG.
It is assumed that the movement is guided through 6. A lever 18 having air cylinders 17, 18 provided at the lower part of the pedestal 13 of the movable grippers 11, 12 is connected via a link 20, and is configured to be able to rapidly move forward and backward in the forward and backward directions.

Further, shock absorbers 21 and 21' facing forward and backward in the forward and backward directions are attached to the lower part of each pedestal 13 to soften the shock when stopped by the stopper. In addition, the movable gripper 11
In order to freely adjust and define the reinforcing bar feed amount, a plurality of air cylinders 22 are provided horizontally at predetermined intervals in front of the shock absorber 21. In order to adjust the feed amount, the rod 22a of one of the air cylinders 22 is made to protrude, and the shock absorber 21 is received by the protruded rod 22a. In this way, the pedestal 13
Determine the forward end of.

Further, a stopper 23 is provided at the rear of the shock absorber 21', and defines the retreating end of the pedestal 13 by receiving the shock absorber 21'. In this way, the movable gripper 11 is configured to be able to move back and forth at desired intervals.

On the other hand, in order to regulate the amount of rebar feed by the movable gripper 12, a stopper 24 is provided in front of the shock absorber 21 provided on the movable gripper 12, and a stopper 25 is provided in the rear of the shock absorber 21'. 24 and 25 receive the shock absorbers 21 and 21' of the movable gripper 12, thereby defining the forward and backward ends of the pedestal 13. In this way, the movable gripper 12 is also configured to be able to move back and forth at predetermined intervals.

In this way, the vertical reinforcing bars group 2A is conveyed longitudinally in an intermittently manner by the above-mentioned vertical reinforcing bar transfer device 1, movable gripper 12, and movable gripper 11.

Incidentally, reinforcing bar transfer guides 26, 26' are provided in the horizontal reinforcing bar supply device 6 and the welding machine 8, which will be described later, in order to set and hold the vertical reinforcing bars 2 before the operation thereof starts. In addition, reinforcing bar transfer guides 26, 26'
A stopper 28 is provided that can be freely projected by an air cylinder 27 in order to position the tip of the vertical reinforcing bar 2 held by the vertical reinforcing bar 2 . The reinforcing bar transfer guides 26, 26' and the stopper 28 are provided so as not to obstruct the movement of the movable grippers 11, 12. The reinforcing bar group 2A is vertically fed to the position of this stopper 28 by the above-mentioned vertical reinforcing bar transfer device 1.

The horizontal reinforcing bar supply device 6 is thus a device that supplies the horizontal reinforcing bars 7 at predetermined intervals onto the vertical reinforcing bar group 2A that has been vertically fed via the vertical reinforcing bar transfer device 1, and is shown in FIGS. 1 to 3. In the apparatus shown in FIG. 1, a stock chute 51, a hopper 57 for horizontal reinforcing bars 7 provided at the upper stage of the chute 51, and a reinforcing bar take-out machine 58,
The supply cam 53 is provided at the lower stage of the stock chute 51. This supply cam 53
1 is a plurality of disc-shaped supply cams having engagement recesses 52 for discharging reinforcing bars corresponding to each other at intervals on the circumferential surface, and these supply cams 53 are rotated in synchronization with each other by an air cylinder (not shown). It is configured to be driven. Then, the horizontal reinforcing bars 7 are supplied from inside the stock chute 51 via the supply cam 53.
The upper and lower electrodes 5 of the welding machine 8 are connected via the guide receiving member 54.
It is configured so that it can be placed between 5 and 56.

The welding machine 8 is a device that welds the horizontal reinforcing bars supplied via the horizontal reinforcing bar supply device 6 to the vertical reinforcing bar group 2A every time the feeding is stopped, and as shown in FIG. From the right, No. 1, No. 2,...
As shown in FIG.
A transformer 59, a thyristor actuator (not shown), and electrodes 55 and 56 as shown in FIG. 3 are provided as a pair, and the current value at each welding point is
Each electrode can be controlled and adjusted. In addition, vertical reinforcing bars 2 supplied by the longitudinal reinforcing bar transfer device 1
Accordingly, the electrodes actually used for welding can be selected, and as shown in FIG. 3, each upper electrode 55 is made vertically movable by an air cylinder 60.

The apparatus of the present invention includes a cross-feeding device 5 that feeds vertical reinforcing bars 2 of a predetermined length that have been cut in parallel at predetermined intervals by transverse feeding, and vertical reinforcing bars 2 that are arranged in parallel and are fed by the device 5. A vertical reinforcing bar supplying device 3 consisting of a vertical reinforcing bar feeding device 4 that vertically feeds the group 2A to the vertical reinforcing bar transfer device 1; a vertical reinforcing bar transfer device 1 for vertically feeding vertical reinforcing bars; a horizontal reinforcing bar feeding device 6 for feeding horizontal reinforcing bars at predetermined intervals onto the vertical reinforcing bars fed vertically via the vertical reinforcing bar transferring device 1; and a welding machine 8 that welds the horizontal reinforcing bars that have been cut to the vertical reinforcing bars every time the feed is stopped, and the horizontal feeding device 5 welds the cut vertical reinforcing bars 2 of a predetermined length onto the endless conveyor 44 with claws. and a vertical reinforcing bar parallel arrangement device consisting of an endless conveyor with claws 44 and a reinforcing bar temporary pedestal 45, and the vertical reinforcing bar isolating device 1 is located in front of the electrode position of the welding machine 8. A movable gripper 12 is provided and is movable back and forth between a stopper 24 in the advancing direction and a stopper 25 in the backward direction. This wire mesh knitting device is characterized in that it is composed of a movable gripper 11 having a plurality of cylinders 22 with retractable rods 22a as stoppers in the direction of movement, and the device of each part is not necessarily the same as the above embodiment. Of course, it is not necessary to use the device described in detail. And the first
The wire mesh stacking device 9 shown in the figure is an auxiliary device of the device of the present invention, and is a device for sequentially stacking the wire meshes 10 that are knitted and sent out by the transfer device 1.

Next, a method of knitting a wire mesh using the wire mesh knitting device of the above embodiment will be explained.

This method consists of the following steps (a) to (v).
That is, (a) the vibrator 32 of the lateral feed device 5 of the vertical reinforcing bar supply device 3 shown in FIG. At this time, the vertical reinforcing bars 2 in the hopper 50 are supplied onto the diaphragm 33 while vibrating, and the vertical reinforcing bars 2 are vibrated and moved while being attracted by the magnets 34 of the conveyor 35, so that a plurality of vertical reinforcing bars 2 are Stock shoot 36 by horizontal feed
Supplied in a uniform condition. Such a diaphragm 3
By using the transfer line using 3, the vertical reinforcing bars are untangled and the stock shoot 3
6, vertical reinforcing bars can be aligned.

(b) While operating the conveyor 44 shown in FIGS. 8 and 9, the supply cam 37 is actuated by the air cylinder 42 every time a predetermined gap between the claws 44a and 44a is reached, so that the conveyor 44 shown in FIGS. The vertical reinforcing bars 2 in the trunk 36 are supplied. conveyor 4
The vertical reinforcing bars 2 supplied on the reinforcing bar 4 are sequentially moved and supplied onto the reinforcing bar temporary cradle 45, and when the conveyor 44 stops, they are arranged in parallel on the movable piece 48 between the fixed pieces 46, 46 of the reinforcing bar temporary cradle 45. be done. This state is shown in FIG.

(c) After confirming that there is no vertical reinforcing bar on top of the feed roller 30, operate the operating member 47 of the reinforcing bar temporary holder 45 to move the movable piece 48, as shown in FIG. At this time, the plurality of parallel vertical reinforcing bars 2 (hereinafter simply referred to as vertical reinforcing bar group 2A) are as follows:
Due to the position holding action of the claw 44a of the conveyor 44 and the positioning action between the fixed pieces 46, 46, the conveyor 44 falls at a predetermined position, and the engagement groove 2 of the feed roller 30
9 is engaged and supported.

In the step (b), a sensor (not shown) is provided near the supply cam 37 at the upper stage of the conveyor 44 to count the number of pawls 44a that pass after the conveyor 44 is started. The air cylinder 42 is activated by the third, fifth, and ninth claw detection signals, respectively.
If activated, the vertical reinforcing bars 2 will be placed on the first, third, fifth, and ninth fixing pieces 46 and 46 from the right side when viewed from the vertical reinforcing bar transfer direction on the reinforcing bar pedestal 45. Can be arranged in parallel. Further, depending on the group of vertical reinforcing bars to be supplied, the electrodes 55 and 56 to be used in the welding machine 8 can be set to the first, third, fifth, or ninth using this sensor.

(d) The vertical reinforcement group 2A arranged in parallel on the feed roller 30 is connected to the feed roller 30 and the rotating electromagnet 3.
1, as shown in FIG.
It is fed vertically until it reaches number 8. At this time, the vertical reinforcement group 2A is set in the vertical reinforcement transfer device 1 and the welding machine 8, as shown in the steps described later.

(E) In this state, the supply cam 53 for the horizontal reinforcing bar 7 shown in FIG. 3 is operated. By this operation, one horizontal reinforcing bar 7 in the stock chute 51 is taken out and placed on the vertical reinforcing bar group 2A via the guide receiving member 54.

(f) Next, the air cylinder 60 of the welding machine 8 is operated to move the electrode 55 downward, pressurizing the intersection of the vertical and horizontal reinforcing bars 2 and 7 between the upper and lower electrodes 55 and 56, and in this state, the energize and weld.

(G) Next, the movable gripper 12 is operated.
That is, after activating the air cylinder 14, lowering the presser foot 15, and grasping the vertical reinforcing bar group 2A to which one horizontal reinforcing bar 7 is welded, and activating the air cylinder 27 and retracting the stopper 28, Operate the air cylinder 18 until it hits the stopper 24 to rapidly advance the vertical reinforcing bar group 2A, raise the presser foot 15,
After operating the air cylinder 17 until it hits the stopper 25 and returning the movable gripper 12, the presser foot 15 is lowered again to grip the vertical reinforcing bar 2.

(H) Repeat the steps (E), (F), and (G) above to sequentially move the vertical reinforcing bars 2A to the other movable gripper 11 side by operating the movable gripper 12. Therefore, the movable gripper 12 is released,
Operate the air cylinder 17 to return to the backward position. Furthermore, the movable gripper 11 is operated to grip and hold the vertical reinforcing bar group 2A.

(i) Next, both steps (e) and (f) are repeated, and the air cylinder 18 is operated until it hits the rod 22a of the selected air cylinder 22, thereby rapidly moving the vertical reinforcing bar group 2A. After the grip is released, the air cylinder 17 is operated to return the vertical reinforcing bars 2A to the rear, and then the vertical reinforcing bars 2A are gripped again.
Note that the rapid feed amount can be selected by changing the selected air cylinder 22.

(J) Repeat the step (J) above to attach the horizontal reinforcing bars 7 to the vertical reinforcing bar group 2A at predetermined intervals, and then attach the wire mesh 10.
After knitting the wire mesh 10, the wire mesh stacking device 9
Transfer them to the storage area and stack them in stock. Thereafter, each wire mesh 10 is bent by a bending machine (not shown) and a spacer 61 is attached, resulting in a reinforcing bar cage 62 shown in FIG. 13.

The method using the device of the embodiment has been described in detail above, but the method of the present invention is as follows: (A) Feeding cut vertical reinforcing bars of a predetermined length one by one onto an endless conveyor with claws, When a plurality of vertical reinforcing bars are placed in parallel at a predetermined interval on a temporary reinforcing bar pedestal using The process of feeding the vertical feed device. (B) The process of vertically feeding the supplied vertical reinforcing bars toward the welding machine. (C) A process in which vertical reinforcing bars are sequentially moved using a movable gripper that is installed in front of the welding machine's electrode position and can move back and forth at predetermined intervals. (D) A process in which vertical reinforcing bars are sequentially moved by a movable gripper that is installed downstream of the electrode position of the welding machine independently of the movable gripper mentioned above, and has multiple stoppers that can be selected in the direction of movement. (E) Process of supplying horizontal reinforcing bars one by one to the electrode position of the welding machine. (F) Process of welding the horizontal reinforcing bars to the vertical reinforcing bars at the electrode position of the welding machine. This is a method for knitting a wire mesh, characterized by comprising at least the steps (A) to (F) above.

The above-mentioned vertical reinforcing bars are coiled reinforcing bars that are straightened and then cut to a predetermined length, and because they are cut reinforcing bars that eliminate the internal strain that occurs during the straightening process, each horizontal reinforcing bar is welded to a group of vertical reinforcing bars. Welding can be performed reliably by keeping the pressure applied at a point substantially constant, and the knitted wire mesh does not warp, making it possible to manufacture wire mesh with high precision.

In addition, since the method is to arrange multiple vertical reinforcing bars in parallel at predetermined intervals on the reinforcing bar temporary pedestal 45, when there are no vertical reinforcing bars at the bottom of the reinforcing bar temporary cradle 45, the vertical reinforcing bar group 2A is placed in parallel. The vertical reinforcing bars are fed to the vertical transfer device 1 while maintaining the same. As soon as the supply is finished, the next parallel arrangement of longitudinal reinforcing bars can be prepared.

Furthermore, it has a vertical reinforcing bar transfer process using a movable gripper 12 that moves back and forth at a predetermined interval before and after the electrode position of the welding machine, and a movable gripper 11 that can move back and forth by selecting a desired interval. Using longitudinal reinforcing bars cut into a wire mesh, the horizontal reinforcing bars in the wire mesh 10 as shown in FIG. A wire mesh 10 that is larger at the center and has horizontal reinforcing bars close to the front and rear ends of the wire mesh can be manufactured efficiently. In other words, the part where the initial horizontal reinforcing bar spacing is narrow,
By operating the movable gripper 12 installed in front of the electrode position of the welding machine, the part where the interval between horizontal reinforcing bars in the center is large and the part where the interval between horizontal reinforcing bars at the end is narrow can be adjusted to the position of the electrode of the welding machine. By operating the movable gripper 11 provided at the rear stage, vertical reinforcing bars are vertically ironed, and horizontal reinforcing bars are welded every time the movement of the reinforcing bars is stopped, thereby efficiently forming a wire mesh with different intervals between horizontal reinforcing bars within the wire mesh. In particular, since there is a transfer process of longitudinal reinforcing bars by the movable gripper 11 installed after the welding machine independently of the movable gripper 12 installed before the welding machine, the last part of the wire mesh near the last part The horizontal reinforcing bars can also be welded, and the wire mesh used in manufacturing the above-mentioned reinforcing reinforcing bar cages for lightweight cellular concrete can be efficiently knitted.

The apparatus of the present invention also includes a cross-feeding device 5 that feeds cut vertical reinforcing bars 2 of a predetermined length in parallel at predetermined intervals, and a group of vertical reinforcing bars arranged in parallel fed by the device 5. a vertical reinforcing bar feeding device 3 consisting of a vertical reinforcing bar feeding device 4 that vertically feeds 2A to the longitudinal reinforcing bar transfer device 1; A vertical reinforcing bar transfer device 1 for feeding, a horizontal reinforcing bar feeding device 6 for feeding horizontal reinforcing bars at predetermined intervals onto the vertical reinforcing bars fed vertically via the device 1, and a horizontal reinforcing bar feeding device 6 for feeding the horizontal reinforcing bars fed via the device 6 vertically. It is equipped with a welding machine 8 that welds the reinforcing bars each time the feed is stopped, and the horizontal feeding device 5 is a device that feeds cut vertical reinforcing bars 2 of a predetermined length onto an endless conveyor with claws 44 one by one. , an endless conveyor with claws 44, and a vertical reinforcing bar parallel arrangement device consisting of a temporary reinforcing bar cradle 45, and the vertical reinforcing bar transfer device 1 is provided in front of the electrode position of the welding machine 8 and is oriented in the advancing direction. stopper 24
A movable gripper 12 that can move back and forth between the welding machine 8 and a stopper 25 in the backward direction, and a plurality of rods 22a that are provided independently of the movable gripper 12 at a stage downstream from the electrode position of the welding machine 8 and that are retractable. This is a wire mesh knitting device characterized by comprising a movable gripper 11 having a cylinder 22 as a stopper in the direction of movement.

Therefore, with the device of the present invention, the installation space can be made smaller and more compact than the conventional device that uses a coiled reinforcing bar, a device for straightening it, and a cutting machine.
In addition, in the apparatus of the present invention, as described in the explanation of the method above, since the vertical reinforcing bars can be prepared on the reinforcing bar temporary cradle 45, when there are no reinforcing bars on the vertical reinforcing bar transfer device 1, The vertical reinforcing bars 2A arranged in parallel can be immediately supplied onto the longitudinal reinforcing bar transfer device 1.
Also, a movable gripper 12 is provided in front of the electrode position of the welding machine 8 and has stoppers at predetermined intervals.
and a movable gripper 11 which is provided independently of the above-mentioned movable gripper 12 after the electrode position of the welding machine 8 and is provided with a plurality of stoppers in the forward direction, so that the method described above can be performed. As mentioned in the explanation, the horizontal reinforcement spacing is different within the wire mesh,
A wire mesh having first and last horizontal reinforcing bars close to the front and rear ends of the wire mesh can be efficiently knitted.

As described above, the apparatus of the present invention is an extremely advantageous apparatus for carrying out the method of the present invention.

[Brief explanation of drawings]

FIG. 1 is a perspective view schematically showing the entire apparatus of the present invention, and FIG. 2 is a partial front view of the apparatus. 3 is a simplified diagram of FIG. 2, and FIG. 4 is a partially enlarged perspective view of FIG. 2. Fig. 5 is a front view of the vertical reinforcing bar supply device, Fig. 6 is a right side view of Fig. 5, Fig. 7,
8 and 9 are a plan view, a perspective view, and a front view, respectively, showing enlarged portions of the apparatus shown in FIG. 5. 10 and 11 are partially enlarged rear views of FIG. 9 showing before and after operation, FIG. 12 is a view of the portion shown in FIG. 10 in the direction of arrows, and FIG. 13 is a perspective view of the reinforcing bar cage. 1... Vertical reinforcing bar transfer device, 2... Vertical reinforcing bar, 2A...
... Vertical reinforcing bar group, 3... Vertical reinforcing bar supply device, 4... Vertical feeding device, 5... Horizontal feeding device, 6... Horizontal reinforcing bar feeding device, 7... Horizontal reinforcing bar, 8... Welding machine, 9... Wire mesh stacking device, 10... Wire mesh, 11, 12... Movable gripper, 17, 18... Air cylinder, 19...
...Feed lever, 20... Lever, 30... Feed roller, 31... Rotating electromagnet, 33... Vibration plate,
35...Conveyor, 36...Stock shoot,
37... Supply cam, 44... Conveyor with claws, 4
5... Temporary reinforcement stand, 51... Stock shoot, 53... Supply cam, 54... Guide receiving member,
55, 56... Electrode, 62... Rebar cage.

Claims (1)

[Scope of Claims] 1 (A) Cut vertical reinforcing bars of a predetermined length are fed one by one onto an endless conveyor with claws, and using the conveyor, a plurality of vertical reinforcing bars are placed on a temporary reinforcing bar holder. A step in which vertical reinforcing bars are arranged in parallel at predetermined intervals, and when there are no reinforcing bars at the bottom of the reinforcing bar temporary pedestal, the vertical reinforcing bars are fed to a longitudinal reinforcing bar feeding device while maintaining the parallel arrangement state of the vertical reinforcing bars. (B) The process of vertically feeding the supplied vertical reinforcing bars toward the welding machine. (C) A process in which vertical reinforcing bars are sequentially moved using a movable gripper that is installed in front of the welding machine's electrode and can move back and forth at predetermined intervals. (D) A step in which the vertical reinforcing bars are sequentially moved by a movable gripper that is installed downstream of the electrode of the welding machine independently of the movable gripper and has a plurality of stoppers that can be selected in the direction of movement. (E) Process of feeding horizontal reinforcing bars one by one to the electrode position of the welding machine. (F) Process of welding horizontal reinforcing bars to vertical reinforcing bars at the welding supply electrode position. A method for knitting wire mesh, comprising at least the steps (A) to (F) above. 2. A transverse feed device 5 that feeds cut longitudinal reinforcing bars 2 of a predetermined length by transversely disposing them in parallel at predetermined intervals;
Vertical reinforcing bars 2 arranged in parallel fed by the device 5
A vertical reinforcing bar feeding device 3 consisting of a vertical feeding device 4 that vertically feeds A to the vertical reinforcing bar transfer device 1; A vertical reinforcing bar transfer device 1 for feeding, a horizontal reinforcing bar feeding device 6 for feeding horizontal reinforcing bars at predetermined intervals onto the vertical reinforcing bars fed vertically via the device 1, and a horizontal reinforcing bar feeding device 6 for feeding the horizontal reinforcing bars fed via the device 6 vertically. It is equipped with a welding machine 8 that welds the reinforcing bars each time the feed is stopped, and the horizontal feeding device 5 is a device that feeds cut vertical reinforcing bars 2 of a predetermined length onto an endless conveyor 44 with claws one by one. , an endless conveyor with claws 44, and a vertical reinforcing bar parallel arrangement device consisting of a temporary reinforcing bar holder 45, and the longitudinal reinforcing bar transfer device 1 is provided in front of the electrode position of the welding machine 8 and is oriented in the direction of movement. stopper 24
A movable gripper 12 that can move forward and backward between the welding machine 8 and a stopper 25 in the backward direction, and a plurality of rods 22a that are provided independently of the movable gripper 12 at a stage downstream from the electrode position of the welding machine 8 and that are retractable. and a movable gripper 11 having a cylinder 22 as a stopper in the direction of movement.