JPH0737903U - Welding type wire coil automatic binding machine - Google Patents

Abstract

(57) [Summary] [Purpose] When binding wire rod coils, the strength of the steel strip joint portion of the binding by the steel strip is strengthened so that the bound steel strip does not cause a cutting accident, and the wire rod is joined by the seal notch joint. We aim to make improvements to prevent the occurrence of flaws and to prevent rust from the seal notch. [Structure] The conventional seal notch joint is equipped with a binding head including a welding device for performing multi-point spot welding so as to make it a welded joint, which imparts strong impact resistance to a steel strip joint portion, and a wire rod by the seal notch portion. To prevent damage to
In addition, it was constructed to prevent the occurrence of rust.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a wire rod coil automatic binding machine using steel strips, and more particularly, to a wire rod coil automatic binding machine equipped with a binding head including a welding device for performing weld joining of steel strip joints instead of seal joining. It is about.

[0002]

[Prior art]

 Conventionally, metal wires such as wire rods and bar steel materials are wound into a coil in the final manufacturing process, and the wire coil automatic binding machine that binds them with a steel strip binds them extremely tightly and strongly, and afterwards Has been involved in smooth transportation, storage and handling in the distribution process. The joining portion of the binding steel strip is, for example, "Tighten and bind the binding steel strip" on the third line from the bottom of page 6 of the original application specification in Japanese Utility Model Publication No. 61-160003. For example, as shown in FIG. 5 of Japanese Utility Model Laid-Open No. 1-179803, joining of steel strips by a seal notch method in which a cut is made together with a polymerized steel strip through a seal (sealing material) is applied. It was common sense. However, although the joining operation and treatment of the steel strip by the seal notch method are very simple, the strength against the base metal is generally guaranteed to be about 75%, and as described above, after the strong compression. In order to bind the wire rod coil, it is necessary to use several steel strips having a tensile strength (tensile strength) of 1 ton or more, which has been generally well known and practiced. Even in the situation where such measures are taken, the bound steel strip is cut from the steel notch part of the seal notch joint due to the severe external pressure and impact that the wire coil to be bound receives in the distribution process. It often caused troublesome things. For example, it is unexpectedly high that shocks or excessive shocks such as stacking and stacking of bundled wire coils or sudden unloading during crane suspension and transportation, collision with obstacles, etc. are unexpectedly high. The tension applied to the bound steel strip in combination with the expansion force induced by the contained internal pressure of the wire rod coil to be bound below is extremely large, which causes the cutting of the joint and the post-processing confusion that the person in charge of handling suffers. It wasn't worth mentioning, and it was sometimes dangerous. On the other hand, there was welding joining as another method of steel strip joining, but from the viewpoint of its joining strength and joining reliability, it has been shunned by the wire rod coil bundling in the past. One of the applicants of the present application developed and applied for earlier the application of "multi-point welding method for joining steel strips" (Japanese Patent Application No. 1-39144 ... steel strip row multi-point joining) A rapid increase in the bonding strength was observed, the strength against the base metal was also increased to more than 90%, and the stable bonding strength was maintained, reaching a reliability of 3 nines. It was

On the other hand, the wire coil is generally bundled in a bare package and put into the distribution process, and in particular, domestic products are 100% bare. By the way, in recent years, there have been particularly stringent requirements regarding the surface quality of wire rods, and scratches on the wire rod surface due to the projection shape of the steel strip joints due to the conventional seal notch method have become a problem, and measures to prevent this flaw have been seriously studied. I arrived. Further, in the bare binding of the wire rod, rust is likely to occur, but there is also a problem that the rust of the wire rod itself is particularly promoted due to the rust from the notch of the seal notch.

[0004]

[Problems to be solved by the device]

 In view of the situation as described above, the present invention aims at binding a wire rod coil in a direction in which a bound steel strip does not cause a cutting accident, a direction in which a flaw is prevented, and a direction in which rust is suppressed. In order to make it possible to incorporate the welding joining method into the binding head by searching for the mode and specifications as the optimum type for the wire coil automatic binding machine, instead of just adopting the welding joining method as a simple replacement, As a result of earnest trials, the present invention has been provided.

[0005]

[Means for Solving the Problems]

 The present invention has dealt with by applying the following means in order to solve the above-mentioned problems. That is, the seal notch joining method is changed to the welding joining method as a steel strip joining means of the automatic wire coil binding machine, and therefore, a joining head including a welding device for performing multi-point spot welding is provided to join the steel strip after strong tightening. This structure is designed to give strong impact resistance to the wire part, prevent the wire coil from being damaged, and eliminate the seal notch that is the igniter of rusting, including the welding device to the wire coil automatic binding machine. When mounting the binding head, it was selected and used because it has a particularly high welding efficiency in the space of the compression truck.

[0006]

[Function of the device]

 The operation of the present invention is shown in FIG. 11 by performing multi-point spot welding by moving the upper electrode 61 shown in FIG. 9 of the embodiment drawings (multi-point spot welding in the steel strip width direction as a preferred embodiment). It is possible to obtain a good welding nugget and to perform strong steel strip joining with a base metal strength of approximately 90% or more, and even in the multi-point longitudinal spot welding of steel strips shown in Fig. 12, compared to conventional seal notch joining. It has a much higher strength against the base metal, and the impact resistance of the steel strip joint is greatly improved by adopting multi-point spot welding. The joining action is very successful. Furthermore, as can be seen in Figs. 11 and 12, the steel strip joints are extremely flat and do not cause any scratches or the like on the wire to be bound, and at the same time they do not cause rusting. Is.

[0007]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of an automatic wire rod coil binding machine (hereinafter simply referred to as the binding machine) 1 of the present invention, FIG. 2 is its plan view, FIG. 3 is a side view taken along the line AA of FIG. 1, and FIG. In the binding machine 1, the head side compression carriage 4 and the opposite side compression carriage 5 are close-compressed and separated from each other on the binding machine base 2 as shown in FIG. It is mounted as much as possible, and the compression cylinders 41 and 51 respectively move close to and away from each other. The wire rod coil 90 is suspended by the C hook 81 of the trolley 80 to be loaded into and removed from the binding machine 1. When binding the wire rod coil, the wire rod coil 90 is supported by the lifter 3 and the C hook 81 is free from play. Become. The head-side compression carriage 4 is provided with a bundling head 10 and a plurality of head-side steel strip guide frames 20 corresponding to the bundling head 10 radially, and the opposite-side compression carriage 5 has an opposite-side steel strip guide frame. Numerals 30 are provided so as to be engageable with the binding heads 10 of the head side compression carriage 4 and the head side steel strip guide frame 20, respectively. The present binding machine 1 has the same specifications as the conventional wire coil automatic binding machine except for the binding head 10, and the binding head 10 including the welding device 60 for tightening the steel strip 70 and welding and joining the overlapped portion is used. The difference is that the overlapping portion of the steel strip 70 is replaced with a binding head having a sealing device for joining a seal notch.Detailed description of the entire binding machine will be omitted. explain.

FIG. 5 is a front view showing one of the binding heads 10 mounted on the head-side compression carriage 4 in a form showing the mounting state thereof, and FIG. 6 is a side view thereof. Further, FIG. Although the head 10 itself is shown in detail as a front partial sectional view and as a side partial sectional view thereof in FIG. 8, the binding head 10 is provided with a head transfer device 13 including a transfer cylinder 14 along a head transfer guide 12. When the bundling head 10 comes into close contact with the wire rod coil 90 during binding of the wire rod coil or separates from the wire rod coil 90 after binding, the head side compression truck 4 moves in the direction perpendicular to the axial direction of the wire rod coil 90. In contrast, it is mounted radially. As shown in FIGS. 7 and 8, the binding head 10 itself includes a feeding and tightening device 11 for a steel strip 70, a shear device 19 for cutting excess steel strip, and a welding device 60 which is a feature of the present invention. Is equipped with. The feed tightening device 11 and the shear device 19 including the air motor 15 are known and will not be described.

The welding device 60 includes an upper electrode 61, a lower electrode 62, a transformer 66, a lead wire 67, and an upper electrode moving mechanism 65 for multipoint spot welding.

A mechanism such as a suspension type steel strip line alignment separation / separation mechanism for supporting the pressing force of the upper electrode 61 to and from the steel strip 70 by the pressing cylinder in the welding device 60 and the pressing force of the upper electrode 61 is known. For a single upper electrode moving device for multi-point spot welding, an eccentric shaft 652 is used to move the holder 655 of the upper electrode 61 in the width direction of the steel strip 70, for example, as shown in FIG. The spot position is moved by moving L _{1 to the} right of the center line C-C as shown in (a) or by moving L _{2 to the} left of the center line C-C as shown in FIG. It is displaced. This will be described collectively with reference to FIG. 10. With respect to the widthwise center line C-C of the steel strip 70, L _{1 is} moved to the right and L _{2 is} moved to the left, so that a welding nugget as shown in FIG. 11 is formed. Then, three-point lateral spot welding as in this embodiment is performed, and a joint strength of about 90% or more with respect to the base metal strength is obtained.

As described above, the multi-point spot welding is more preferable to the multi-point welding in the width direction of the steel strip, but it does not mean that multi-point welding in the longitudinal direction with respect to the steel strip 70 as shown in FIG. 12 is completely impossible. , Can be adopted in some cases.

When the wire rod coil was bound by the present binding machine 1, the wire rod coil 90 itself was found to be damaged even after severe handling in 200 experimentally conducted cases, but the steel strip 70 was cut. Did not occur at all. In addition, in the wire rod coil to be bound, no scratches were found on the wire rod itself due to the steel strip joint. Furthermore, the rust-proof condition due to open-stacking did not occur at the joint, but only at the limit of the rust resistance of the wire itself.

[0013]

[Effect of device]

 By implementing the present invention, it becomes possible to bind the wire coil by welding the steel strip joints, and the following effects are expected. That is, (1) the impact resistance of the bundled wire coil is increased, the number of handling accidents in the wire coil distribution process is drastically reduced, and smooth handling is achieved. (2) The quality of the wire rod coil is guaranteed, and in addition, safety is secured when handling the wire rod coil. (3) Furthermore, it is possible to prevent the occurrence of scratches on the wire rod at the steel strip joint, which is also effective in terms of quality. (4) In addition, in the case of rusting, which is a concern, the steel strip joint does not act as the initiator, and there is no adverse effect on the rust preventive surface.

[Brief description of drawings]

[Summary] All the drawings show the embodiments of the present invention.

FIG. 1 is a front view of the present binding machine.

FIG. 2 is a plan view of the binding machine.

3 is a side view of the binding machine taken along the line AA of FIG.

FIG. 4 is a side view of the present binding machine taken along the line BB of FIG.

FIG. 5 is a front view showing a binding head mounted state.

FIG. 6 is a side view showing a bundling head mounted state.

FIG. 7 is a front partial cross-sectional view of the binding head.

FIG. 8 is a partial side sectional view of the binding head.

FIG. 9 is a schematic explanatory view of an upper electrode moving mechanism.

FIG. 10 is an explanatory diagram showing a mode of movement of the upper electrode.

FIG. 11 is an aspect diagram of multi-point spot welding.

FIG. 12 is another embodiment of multi-point spot welding.

[Explanation of symbols]

1 binding machine 2 binding machine base 3
Coil lifter 4 Head side compression truck 5 Opposite side compression truck 10
Bundling head 11 Feeding and tightening device 12 Head transfer guide 13
Head transfer device 14 Transfer cylinder 15 Air motor 19
Shear device 20 Steel strip guide frame on the head side 25 Steel strip feeding guide 30
Opposing steel strip guide frame 41 Compression cylinder 51 Compression cylinder 60
Welding device 61 Upper electrode 62 Lower electrode 65
Electrode moving mechanism 66 Transformer 67 Lead wire 68
Weld nugget 70 Steel strip 80 Trolley 81
C hook 90 wire rod coil.

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. In a wire rod coil automatic binding machine for binding wire rod coils using a steel strip, while giving impact resistance to the steel strip joint after strong compression tightening, it is possible to prevent flaws from being formed on the wire to be bound. At the same time, in order to prevent rust from being generated from the seal notch portion, a welding head including a binding head including a welding device for performing multi-point spot welding to weld and join the joint portion is provided. Binding machine.