JPS598874A - Iron wire assembling machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for manufacturing sieve-shaped reinforcing bars used for concrete pipes, concrete piles, etc.

A sieve reinforcing bar is made by wrapping a spiral bar around the outer periphery of a plurality of longitudinal bars, and resistance welding the intersections of the longitudinal bar and the spiral bar.

Conventional cage-shaped reinforcing bars manufacturing equipment generally has a vertical bar support device that supports horizontally arranged vertical bars l in a cylindrical shape as shown in Figure 1 and rotates each vertical bar l. By supplying a spiral muscle 2 to the outside of the vertical reinforcement 1 to be rotated by this support device,
This spiral muscle is wound spirally around the outside of a group of vertical muscles that move in the axial direction while rotating, and the intersection of vertical muscles 1 and spiral muscles 2 is connected to an electrode 3.
．． 4 for resistance welding.

In the case of the conventional reinforcing bar manufacturing equipment described above, the equipment that rotates and sends out a large number of vertical bars 1 arranged in a cylindrical shape as shown in Figure 1 in the axial direction at a constant speed is extremely complicated. Become.

In addition, in the welded part, the electrodes that support the inside of the vertical reinforcement 1 must not interfere with the rotation of the vertical reinforcement 1, resulting in a complicated structure. It is impossible to organize

If we arrange the vertical reinforcements l in a triangle or quadrilateral as shown in Figures 2 and 8, weld by rotating the vertical reinforcement group around the 0 point and moving it in the axial direction, wrapping the spiral reinforcement 2 around it. If so, the electrode 3.4 must be moved every time the distance of the vertical stripe l from the zero point changes, making the electrode support mechanism extremely complicated.

This invention was made in order to solve the problems of the conventional reinforcing reinforcement machine as described above. The present invention aims to provide a knitting machine that can extremely easily knit reinforcing bars of complicated shapes other than circular ones by welding spiral reinforcing bars for each longitudinal bar.

The knitting machine of the present invention includes a vertical reinforcement sending means for upwardly sending out a plurality of vertical reinforcements arranged to have an arbitrary shape, and a spiral reinforcement feeding means for sending out a plurality of vertical reinforcements arranged in an arbitrary shape to the outside of a group of vertical reinforcements sent upward by the sending means. The present invention is characterized by comprising a spiral reinforcement supplying means for winding the spiral reinforcement, and a welding means for each vertical reinforcement for welding the intersection of the vertical reinforcement and the spiral reinforcement.

Hereinafter, an embodiment of the present invention is attached to Figures 4 and 5 of the drawings.
This will be explained based on the diagram.

As shown in FIG. 1, a circular annular base 11 is supported on a floor 18 by a plurality of legs 12, and a vertical reinforcement supply means 14 is provided on the floor 18.

This supply means 14 consists of a plurality of sets of two grooved pinch rollers 15 and a motor reducer for driving each pinch roller 15 at a constant speed in the direction of the arrow. It consists of a plurality of drive devices 16 and a plurality of flexible guide pipes 19 for feeding the longitudinal strips 17 fed out by the respective pinch rollers 15 towards the welding means 18 in the center of the base 11.

A welding means 18 is provided for each longitudinal strip 17. 20 is one electrode attachment member of each welding means 18 connected to the upper end of each guide pipe 19, and includes a through hole through which the vertical bars 17 come out from the pipe 19 and one electrode 21 that supports the inside of each vertical bar 17. have.

Further, each member 20 is connected to a piston rod 2B of a plurality of hydraulic or air cylinders 22 attached to the base 11J.

24 is a hydraulic or air cylinder fixed on the rear part of the electrode mounting member 20, and the other electrode 25 is fixed to the tip of the piston rod of this cylinder 24.

Although not shown, the mounting member 20 is provided with a cutting means for cutting the vertical reinforcement 17 when it reaches a certain length.

26 is a spiral muscle supply means. This means
It consists of a swing arm 28 with a post 35 at its upper end rotatably attached to a bearing 27 concentric with the center of the seventh group, and a spiral muscle supply pipe 29 at its lower end.

This pipe 29 is connected to a support frame 8 fixed to the F end of the swing arm 28.
It is pivotably attached to the 0.

Reference numeral 31 denotes a pair of grooved pinch rollers attached to the support frame 30. This roller 30 is driven by a motor attached to the support frame 80, and directs the spiral strip 32 pinched by the pair of pinch rollers 80 toward the supply pipe 29. and sending it out.

This spiral muscle 32 is guided to the vertical hole at the center of the boss 35 at the upper end of the rotating arm 28 and the vertical hole of the bearing 27 by grooved guide rollers 33 and 34 attached to the rotating arm 28, and is guided to the bearing support base 3.
The support stand 36, which leads to the S guide roller 37 on the top of the support stand 36, is fixed to a suitable stand (not shown), and this stand is provided with a drum having a spiral wire wound thereon.

The electrodes 21 and 25 are insulated from each other with a suitable electrical insulating material and connected to output terminals of a welding transformer (not shown).

The structure of the present invention is the same as described above, and its operation will be explained next.

Although not shown, a plurality of drums with vertical stripes wound around them are arranged on the floor, and the vertical stripes drawn out from each drum are straightened into a straight line by a straightening roller (not shown), and each pinch It is held between the rollers 15 and pushed into the guide pipe 19, passes through the through hole of the electrode mounting member 2o, and is sent out in one direction vertically along the outside of the electrode 21.

On the other hand, the spiral muscle 32 fed from the upper drum and passed through the straightening roller passes through the bearing 27 and the vertical hole of the post 85, passes through the guide rollers 34 and 33, is pulled by the pinch roller 31, and enters the spiral muscle supply pipe 29. and is pushed out from its lower end toward the outside of the vertical strip 17 on the outside of the electrode 21.

Unfortunately, the swing arm 28 is driven by a drive device (not shown).
Since it is turning in the direction of the arrow in FIG. 5, the spiral reinforcement 82 pulled out from the pipe 29 is wound around the outside of the vertical reinforcement 17 group.

Therefore, at first, the pinch roller 15 is stopped and the rotating arm 28 is rotated to wrap the spiral muscle 82 around the outside of the group of vertical bars 17 about two times in the same manner.

When the spiral muscle 82 is wrapped around the cylinder 24, the electrode 25 is moved back as shown in FIG.
Then, when it is detected that the vertical muscle 17 supported by the electrode 21 and the spiral muscle 82 alternate, the electrode 25 is advanced and this electrode 25 and the inner electrode 21 are used to wrap the vertical muscle 17. The intersection between the two electrodes and the spiral muscle 82 is strongly pinched, and a current is applied between the two electrodes to weld them.

As described above, after the spiral reinforcement 17 is wrapped around the upper end of the vertical reinforcement 17 group and welded, the pinch roller 15 is driven to
is sent upward at a constant speed, and at the same time, while winding the spiral muscle 32 in a spiral shape, the vertical muscle 17 and the spiral muscle 8 are
Sandwich the intersection of the two and weld.

When the reinforcing bar of a certain length is rubbed by the above operation, the pinch roller 15 is stopped, the spiral bar 32 is wound twice in parallel and melted, and then the cutting means provided on the electrode mounting member 20 is The vertical bars 17 and spiral bars 32 are cut, and the completed semi-shaped reinforcing bars are all carried out and moved to the next process.

This invention has the following effects due to the configuration and operation described below.

(1) Since the longitudinal strips are guided upward without being rotated, there is no risk of twisting the longitudinal strips unlike in conventional longitudinal strip rotation type knitting machines.

(2) There is a welding means for each vertical reinforcement, and this welding means can be moved by hydraulic pressure or an air cylinder, so even if the reinforcing bars to be knitted are not cylindrical, they can be knitted easily.

(3) The drum around which the spiral muscles are wound is located at a fixed position, and the spiral muscles drawn out from this drum rotate together with the arm and wrap around the outside of the longitudinal muscle group, which reduces inertia compared to the method of rotating a heavy drum. It is small and easy to start and stop winding.

(4) Since the reinforcing bars are organized vertically, it is easy to transport them as they are and store them in a storage location, and since they are oriented vertically, the efficiency of the storage location can be increased.

[Brief explanation of the drawing]

Figures 1 to 3 are cross-sectional views showing each reinforcing bar;
The figure is a partially longitudinal side view showing one embodiment of the reinforcing bar knitting machine of the present invention, and FIG. 5 is an enlarged cross-sectional plan view taken along line V-V in FIG. 4.

Claims (1)

[Scope of Claims] l) A plurality of longitudinal muscle supply means for feeding a plurality of vertical muscle upwards, and a spiral muscle is supplied to the outside of the vertical muscle group fed upward by the feeding means and wound in a spiral shape. Consisting of a spiral reinforcement supply means and a welding means for welding the intersection of the longitudinal reinforcement and the spiral reinforcement,
The welding means is provided with an electrode mounting member for each vertical strip,
The electrode mounting member has a through hole through which the vertical bars pass and one electrode that supports the inside of each vertical bar, and is slidably connected to the electrode mounting member.
Further, the reinforcing bar knitting machine is characterized in that the other electrode is slidably provided so as to face one electrode on the outside of the longitudinal reinforcement. 2) The spiral muscle supplying means is provided on a rotating arm that rotates outside the longitudinal muscle group, and the spiral muscle is supplied to the rotating arm from a spiral muscle winding drum located at a fixed position. Iron bar jJN74 machine described in scope 1,