JPS5929484B2 - Lifter in wire coil binding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a lifter for a wire coil binding machine comprising a lifter for lifting a wire coil to a predetermined height, and a binding device for compressing and binding the lifted wire coil in its axial direction. It is related to.

Before being bundled, the wire rod coils that are suspended from the hangers of the trolley conveyor have a complicated shape with the loops of each coil mixed together.

The above-mentioned lifter for lifting the wire rod coil is used to organize the wire rod coil and correct it into a substantially perfect cylindrical shape. In this case, when the wire coil on the lifter was compressed in the axial direction, both ends of the wire coil would undergo a kind of buckling phenomenon and swell into a bump-like shape. If bundled in this state, the performance of tight binding will deteriorate, and the raised portion will be easily deformed during the subsequent transportation process, resulting in a decrease in binding strength. In particular, in a half coil where the coil wall thickness (difference between the inner and outer diameters) is thin and the wire diameter is small, the above-mentioned buckling phenomenon is likely to occur during compression. The present invention aims to eliminate the above-mentioned conventional drawbacks, and one embodiment thereof will be described below based on illustrative drawings. Fig. 1 shows the entire binding machine, 1 is a lifter, 2 is a mandrel carriage, 3 is a head carriage, 4 is a binding device,
5 is a binding band supply device, and 6 is a hanger of a trolley conveyor for transporting wire coils.

Further, T is a wire coil, 8 is a wire coil support stand of the lifter 1, 9 and 10 are wire coil compression surfaces of both the carriages 2 and 3, and 11 is a mandrel of the mandrel carriage 2. The wire coil support stand 8 of the lifter 1 is
As shown in FIGS. 2 and 3, guide rods 1 are provided in pairs on the left and right, are connected to each other by a frame 12, and pass vertically through four fixed guide cylinders 13.
4, and is raised and lowered by a piston rod 17 of a cylinder unit 16 pivotally supported by a fixed base 15.

Further, on the wire coil support surface 18 of the wire coil support base 8, there are grooves in opposite directions such that the height increases as the distance from the point 19 corresponding to the axial center of the wire coil 7 to be supported increases in the axial direction. It has an inclined portion 20 which is inclined to the side. In the tying machine configured as described above, the wire coil 7 is transported to just above the lifter 1 while being suspended from the hanger 6.

At this time, the wire rod coil 7 has its axial direction aligned with both carriages 2,
The direction is to connect 3. In this state, the wire coil support 8 of the lifter 1 is raised by the cylinder unit 16 to lift the wire coil 7 to a predetermined height, and then both carriages 2 and 3 are moved toward each other to remove the wire coil. The compression surfaces 9 and 10 are brought into contact with both ends of the wire coil 7 in the axial direction, and the mandrel 11 is advanced once to engage the head carriage 3, and then the mandrel 11 is retreated to forcibly close both carriages 2 and 3. Move closer to. As a result, the wire coil 7 is compressed in its axial direction, but at this time, the wire of the wire coil 7 slightly descends along the inclined portion 20 of the support surface 18, and the buckling force that bulges the wire is absorbed. . Once the wire coil 7 on the support surface 18 has been compressed in the axial direction as desired, the wire coil 7 is bound at a plurality of locations in the circumferential direction by the binding device 4. The lifter in the wire rod coil binding machine of the present invention can be implemented as described above, and the feature is that the wire rod coil supporting surface of the lifter has a wire rod coil tying machine that extends from a point corresponding to a substantially central portion in the axial direction of the wire rod coil. The point is that it has sloped portions (sloped portions 20 in the embodiment) that slope in opposite directions to each other so that the height increases as the distance in the axial direction increases.

According to this configuration of the present invention, when the wire coil is compressed in the axial direction while the wire coil is lifted up by the wire coil support surface, the wire of the wire coil is moved along the inclined portion of the support surface. By lowering the wire slightly, the buckling force that would normally act to bulge the wire at both ends of the wire coil is absorbed, and the buckling phenomenon does not occur, causing the wire to bulge at both ends of the wire coil. can be prevented from occurring.

This eliminates the possibility that, when the wire coil is bundled with a partial bulge, the bulge later collapses and the binding strength is significantly reduced.
Note that since the wire coil deforms to follow the shape of the supporting surface, if the angle of inclination of the inclined portion is too large, the entire wire coil will appear bent, which will actually reduce the binding strength. In carrying out the invention, the angle of inclination of the inclined portion must be set to the minimum necessary.

The angle of inclination of this inclined portion must be determined according to various conditions such as the size of the wire coil, the material of the wire, and the diameter of the wire, but it has been found that generally around 2 degrees is suitable. When carrying out the present invention, as shown in FIG. 2, if the portion 19 of the support surface 18 corresponding to the axial center of the wire coil is configured horizontally over an appropriate length, both ends of the wire coil 7 While the inclined portion 20 on which the wire rod is supported has a necessary inclination angle, the amount of descent of the central portion in the axial direction of the wire rod coil can be reduced, and deformation of the entire wire rod coil can be reduced.

Furthermore, when the binding machine equipped with the lifter of the present invention handles both full coils with a large coil length (width) and large wall thickness, and half coils as described above, the support surface 1 of the lifter 1
If the inclination angle of the inclined needle part 20 in 8 is configured to be suitable for a half coil that is prone to buckling, the amount of drop in the axial center of the coil when the full coil is lifted will be large, and the entire coil may be unduly damaged. It will be bent.

In the case of a full coil, the buckling phenomenon during compression is difficult to occur, so in such a case, when supporting the half coil 7a as shown in FIGS. 4 and 5, When both ends of the coil 7a ride on the inclined part 20 and support the full coil 7b, both ends of the full coil 7b are configured so as to ride on the horizontal part 21 continuous to the outer end of the inclined part 20. Inclined part 20
This makes it possible to securely prevent buckling of the half coil 7a while minimizing the amount of deformation of the full coil 7b. In this case, if the full coil 7b is configured so that when it is compressed in the axial direction, both ends thereof are located at or near the boundary between the horizontal portion 21 and the inclined portion 20, the buckling phenomenon of the full coil can be further resolved. It is actually preventable.

[Brief explanation of the drawing]

Fig. 1 is a side view of the entire binding machine, Fig. 2 is a front view of the lifter, Fig. 3 is a side view of the same, and Figs. 4 and 5 are front views of main parts showing modified examples of the lifter. 1... Lifter 7, 7a, 7b... Wire coil, 8...
... Support stand, 13 ... Fixed guide cylinder 14 ... Guide rod, 16 ... Cylinder unit, 18 ... Support surface, 19, 21
...Horizontal part, 20... Slope part.

Claims (1)

[Scope of Claims] 1. The lifter in a wire coil binding machine comprising a lifter for lifting a wire coil to a predetermined height, and a binding device for compressing and binding the lifted wire coil in its axial direction, A wire coil bundle in which the supporting surface of the wire coil has sloped portions that slope in opposite directions so that the height increases as the distance in the axial direction increases from a location corresponding to approximately the central portion in the axial direction of the wire rod coil. Lifter on the machine. 2. The lifter according to item 1, wherein the wire coil supporting surface has a horizontal portion at a location corresponding to a substantially central portion in the axial direction of the wire coil, and the inclined portions are provided on both sides of the horizontal portion. 3. The first or second item, wherein the wire coil supporting surface has a horizontal portion continuous with each outer end of the both inclined portions.
Lifter as described in section.