JPH0558970B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to an automatic binding device for short bundles of iron wire, etc.

``Prior Art'' Conventionally, in order to bind double-bent bundles of short iron wire for connecting reinforcing bars, a binding machine (U.S. Patent No. No. 3369573) installed in the lift frame was used. However, the above-mentioned flat string is not only expensive, but also has a complicated mechanism because it is wound and then twisted and tied, and it is prone to failure and cannot withstand continuous use for long periods of time.
Therefore, it was difficult to apply the above method to bundling a large quantity of short iron wire bundles. Furthermore, because the flat cords are colored, they have defects that tend to scatter them around the construction site after use and get mixed into the poured concrete.

"Problems to be Solved by the Invention" The present invention not only makes it possible to easily bind short wire bundles using a simple mechanism without using the above-mentioned flat strings, but also enables long-term continuous binding work using inexpensive binding wires. The object is to obtain a binding device that can perform the following.

"Means for Solving the Problems" The present invention provides a machine frame with opposed U-shaped groove-shaped holders for short wire bundles, an elevating frame above the holder, and a short wire bundle insertion groove in the lower part of the elevating frame. form,
Provide a support device for the binding wire across both sides of the same groove,
The upper end surface of the groove is formed in a downward semicircular shape, and a lifting metal fitting that can rise along the groove and against the spring force is provided inside the inner groove, and the lower end surface of the metal fitting is formed in a downward semicircular shape. A binding needle wire fitting groove is formed on the lower end surface of the same so as to slightly intersect with the center line of the insertion groove, and a binding needle wire tightening arm is formed to alternately detour below the upper end surface of the insertion groove. It is constituted by a binding device pivotally supported on both sides of the upper part of the insertion groove.

"Function" Therefore, the short wire bundle 2 is held between the opposing U-shaped groove-shaped holders 3, 3, and the binding needle wire 6 is passed on both sides of the insertion groove 5, and this is supported by the support device 7. do. In this state, when the elevating frame 4 is lowered, the short wire bundle 2 enters the insertion groove 5 while being held by the holders 3, 3, and bends the binding wire 6 downward (FIG. 7). At the same time, the downward semicircular lower end surface 11 of the lifting fitting 10 that is descending fits into the upper surface of the short wire bundle 2, and the binding needle 6 fits into the fitting groove 12 formed on the lower end surface 11. The direction of the needle line 6 slightly intersects the center line of the short filament bundle 2, that is, the insertion groove 5 (FIG. 6). When the elevating frame 4 further descends, the elevating metal fitting 10 rises against the spring 9, and the upper surface of the short green strip bundle 2 comes into contact with the downward semicircular upper end surface 8 of the insertion groove 5 and stops. In this state, the binding needle wire 6 is bent into an inverted U shape, and one end is lifted below the short wire bundle 2 by one of the clamping arms 13 that detoured downward, and the bundle 2 is pulled from below. Tighten upward (Figure 10). Thereafter, the arm 13 opens to its original position, and the other tightening arm 13 detours downward and tightens the bundle 2 from below to above along the needle line 6, but the needle line 6 slightly intersects the center line. Therefore, both ends of the inverted U-shaped needle wire 6 are bent spirally in parallel without overlapping each other (see FIG. 13), and the bundle 2 can be tightened from below.

``Example'' A large number of short (approximately 35 to 50 cm long) iron wire strips 2' (approximately 0.7 mmφ) for connecting reinforcing bars are bundled in a machine frame 1 set on the floor and bent from the center as shown in Figure 12. An annular bundle 2 is formed as shown in FIG. 14 (the binding device is shown in FIG. 14).
The annular bundle 2 is held in a fixed position by U-shaped groove-shaped holders 3, which move toward each other in opposite directions (FIGS. 3 and 4). Above the holders 3, 3, a lifting frame 4 is installed directly into the inner guide 1.
4 and 14 to form a downward insertion groove 5 for the bundle 2 in the lower part of the frame 4, and a binding wire 6 with a length of about 55 mm and a diameter of 1.5 mm is passed on both sides of the groove 5. , a support groove 7' is formed on one side, and a support spring 7'' is provided at the upper part of the groove 7 to form a support device 7 (FIG. 4).The upper end surface 8 of the downward insertion groove 5 is An elevating metal fitting 10 formed in a downward semicircular shape and capable of rising along the insertion groove 5 against the force of the spring 9 is provided inside the groove 5, and a lower end surface 11 of the metal fitting 10 is formed in a downward semicircular shape. A fitting groove 12 for the binding needle wire 6 is formed in the lower end surface 11 as shown in FIGS. 5 and 6.The direction of the fitting groove 12 is aligned with the center line of the insertion groove 5. The bases of the rotating arms 13', 13' are rotatably supported by pins 15 above both sides of the upper end surface 8 of the insertion groove 5, and the operating arms of the arms 13', 13' are is connected to large and small upright cylinders 16, 16' so that it can freely rotate back and forth, and the rotating arms 13', 1
The needle line tightening arms 13 are provided in opposite directions at the lower end of 3', and the tightening arms 13, 13 can be alternately detoured below the upper end surface 8. It is preferable to detour the tightening arm 13 on the large erecting cylinder 16 side first, and then the tightening arm 13 on the small erecting cylinder 16' side. In the drawing, 17 indicates a cylinder of the lifting frame 4, 18 a take-up reel for the needle line 6, 19 a correction roller for the needle line 6, 20 a cutter for the binding needle line 6, 21 a lever for operating the cutter 20, 2
2 is the lifting spring of the cutter 20, 23 is the same lever 2
1 cylinder, 24 a reciprocating sliding feeder for the binding needle 6, 25 a cylinder for reciprocating movement, and a second cylinder.
In Fig. 14, 26 is a lifting column for bending the annular bundle 2, 27 is a turning pin for bending, 28 is a plate for aligning both ends of the short wire bundle, 29 is a bifurcated support for the bundle 2, and 30 is the same. The two branches for delivery of the bundle 2, 31, are product chute.

``Effects'' Since the present invention is constructed as described above, not only can the bundle of short filaments held at a fixed position be bound almost instantaneously using the short binding needle, but also both ends of the binding needle can be tied together by the short wire. It is possible to bind the bundles in a spirally parallel manner in a tightened state, and it is possible to omit knots by twisting or the like, and it is possible to easily bind the bundles. In addition, the mechanism of the binding machine is simplified and there are few failures, and it can withstand continuous use for a long time and can be applied to large quantities of binding, and since the binding needle is inexpensive, material costs can be reduced.

[Brief explanation of the drawing]

Figure 1 is a front view showing the binding device of the present invention, Figure 2 is a front view showing the binding device of the present invention;
The figure is a plan view taken along line A-A in Figure 1, and Figure 3 is a plan view taken along line A-A in Figure 1.
A front view of the U-shaped groove-shaped holder taken along the line B-B,
Figure 4 is a partially enlarged front view of Figure 1, and Figure 5 is a partially enlarged front view of Figure 1.
Side view taken along line C-C, Figure 6 is Figure 5 D-D
Figures 7 and 8 are a front view of the binding needle in a bent state, Figure 9 is a front view of the binding needle in an inverted U-shaped bent state, and Figures 10 and 11 are the tightening arms. 12 is a perspective view of the bundled state, FIG. 13 is a plan view of the binding portion, and FIG. 14 is a perspective view of the short filament supply device. 1... Machine frame, 2... Short wire bundle, 3... U-shaped groove holder, 4... Lifting frame, 5... Short wire bundle insertion groove, 6... Needle wire for binding, 7... Support device, 8...
Upper end surface, 9...spring, 10...lifting metal fitting, 11...
...Lower end surface, 12... Needle wire fitting groove for binding, 13...
Binding needle wire tightening arm.

Claims (1)

[Claims] 1 Opposed U-shaped groove-shaped holders for short wire bundles are provided on the machine frame, an elevating frame is provided above the holder, a short wire bundle insertion groove is formed at the bottom of the elevating frame, and a short wire bundle insertion groove is provided on both sides of the groove for bundling. A support device for the needle wire is provided, the upper end surface of the groove is formed in a downward semicircular shape, and an elevating metal fitting that can rise along the groove and against the spring force is provided inside the groove. The lower end surface is formed into a downward semicircular shape, and binding needle wire fitting grooves are formed on the lower end surface so as to slightly intersect the center line of the insertion groove, and the grooves are alternately detoured below the upper end surface of the insertion groove. A binding device in which binding needle wire tightening arms are pivotally supported on both sides of the upper part of the insertion groove.