JPH0716564Y2 - Portable metal band welding type binding machine - Google Patents

Description

[Detailed Description of the Invention] [Industrial application] The present invention relates to a binding machine for binding objects by using a metal band, and more particularly, by welding an overlapping part of a binding metal band that can be energized. The present invention relates to a compact and easy-to-handle portable binding machine that joins together.

[Conventional technology]

Machines that bind objects that require strong binding using metal bands have been used frequently from the past, and this has played a major role in modern logistics processes, and it is widely used as an increasingly important tool even now. It is used. Methods for binding objects with a metal band, tightening them, and joining the overlapped parts include the seal notch joining method, the seal crimp joining method, the sealless joining method, and the welding joining method. The form of the bound object and the binding purpose However, in general, from the standpoints of binding certainty and binding strength, and the ease of automatic mechanization, the seal notch connection mainly made of steel strip has been selected. Legal binding machines have been widely used.

However, in this seal notch joining method, in addition to the metal band to be bound, a sealing seal that covers the overlapped portion of the metal band is required, and there is a problem in that the cost increases accordingly. Furthermore, since the metal band joint is surrounded by a seal in addition to the polymerization of the metal band and is notched, it becomes an undesired presence of inclusions with respect to the bound object. Often cause damage to the. As a means for solving such a problem, a binding machine adopting the above-mentioned welding and joining method is disclosed in Japanese Patent Publication No. 53-140.
It appeared as a stationary automatic binding machine as seen in Japanese Patent No. 39, and has been active in applicable fields. However, this welding type binding machine requires a large transformer in order to obtain the welding strength of the metal strip, and the electrode pressurizing device also needs a strong and large one, which exists as a so-called large automatic binding machine. The conditions of use were, of course, limited by the place and time. That is, the welding-type binding machine as a so-called tool, which is lightweight and compact and can be freely carried by the user, was undesired.

On the other hand, the seal crimp joining method requires no wax for the steel strip to be used, and is not preferable for a bound object when it is stored for a long period of time due to problems such as rust generation. The joining method is an extremely simple joining method, which is strong against tensile force but has no joining effect in the pushing direction, so that the joining is generally maintained by the expansion force of the bundled body after compression joining such as Kotton bale. In the situation where it is used as a bundle to be bound, both of them have hardly been used as something unfamiliar to Japanese industry.

[Problems to be solved by the device]

The biggest cause of the fact that there is nothing that should be put to practical use as a small portable binding machine while understanding the merit of welding joining method in metal band binding machine, that is, the economic superiority and quality safety that does not require a seal is understood. , The transformer for securing and controlling the welding current necessary for metal welding was large, and it was difficult to miniaturize the electrode pressing mechanism for good welding nugget formation and securing welding strength. That is, it was not possible to overcome the difficulty of constructing it in a lightweight and compact form while having the functions.

Upon seeing the advent of small transformers, the present inventors immediately found the relationship between the welding strength required for trial manufacture of a compact pressure mechanism and metal band welding and the pressure applied to obtain it, the current value, and the energization time, and satisfied these. After repeated trials for a compact structure, we have been earnestly researching to provide a portable welding type binding machine that is lightweight, compact, and extremely easy for the user to handle.

[Means for solving problems]

As a result of the above examination, in a portable binding machine that binds objects using a metal band, including a metal band tightening device, a metal band joining device, and a surplus metal band cutting device, a metal band that can be energized as the metal band As a metal band joining device, a pair of electrodes for welding and joining the metal band overlapping part, a pressure mechanism by an air cylinder for strongly pressing the metal band overlapping part by the electrodes, and a voltage applied to the electrodes. A transformer for loading and energizing the battery and a timer for controlling the welding time are provided, and the bundling has a weight that can be easily carried by one user.

It should be noted that the metal strips used are not only steel strips that are most often used at present, but stainless steel strips, copper strips, brass strips, aluminum strips, and the like that can carry electricity.

[Action]

The operation of the portable welding type binding machine (hereinafter simply referred to as a binding machine) according to the present invention is such that a metal band is first circulated around an object to be bound, and the tip of the metal band is placed on the bound object by the user. The metal band tip locking device of the binding machine mounted on the binding device is used to lock the succeeding metal bands on the band line of the binding device, and the operation lever is pushed to strongly tighten the metal band tightening device. After that, push down the welding operation lever to lower the upper electrode,
The metal band overlapping part is clamped between the lower electrode and the lower electrode.At this time, during the descending process of the upper electrode, the cutter presser of the excess metal band cutting device attached to a part of the pressurizing mechanism already has The excess metal band is cut by pushing down the upper cutter that holds the metal band together with the lower cutter. Thus, with the metal band overlapped portion strongly clamped between the upper electrode and the lower electrode, the energization timer turns on and welding is started.
With the passage of the welding energizing time preset in the energizing timer, the energizing timer is turned off, the welding joining is completed, and a good welding nugget is formed.

The strength of welding depends on the material and thickness of the metal strip, but it has a joining force of about 900-1,000 kg in one-point welding, and a satisfactory strength can be obtained against the slightly light bundling by the metal strip welding. be able to. When stronger welding joint strength is required, it is advisable to adopt the method of 2-point welding or 3-point welding, but in this case, it is necessary that the pressure of the metal strip by the electrode is even at each welding point. Another pressure mechanism will be considered.

When the reset lever is pushed down after the welding is completed, each mechanism of the binding machine is restored to its original state, and the user completes the binding work by removing the binding machine from the bundle.

〔Example〕

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic side view of a transportable metal band welding type binding machine for one-point welding (hereinafter simply referred to as a binding machine as in the previous section), FIG. 2 is a plan view thereof, and FIG. 3 is A- of FIG. As shown in the view of the arrow A, a metal band tightening device 2, a metal band welding device 3, a surplus metal band cutting device 4, a metal band tip locking device 5, etc. are provided on the binding machine base 1, and A holding lever 8 is provided for facilitating the holding and operation of the binding machine when it is placed on the body to be bound.

The metal band tightening device 2 is configured to drive a tightening wheel 22 by using an air motor 21 as a drive source, as is well known, and is connected to an air cylinder 23 so that the metal band is tightened by the tightening wheel 22.
Made it possible to connect and disconnect. These operations are separately provided on the upper side of the air cylinder 31 as an operation lever 71 which is connected to the air motor 21 and the air cylinder 23.

The sectional view of the metal band welding device 3 is shown in detail in FIG. 4, and the electrode holder 30, the upper electrode 32, the lower electrode 33, the air cylinder 31 for pressurizing the electrode, the piston rod 29, the piston rod.
A guider 36 for correctly supporting the reciprocating motion of 29, and an insulating plate 34 for insulating the piston rod 29 and the electrode holder 30 are provided, and as can be seen in FIGS. , 38.

The lower electrode 33 is detachably attached to the binding machine base 1 and communicates with the transformer 35 by an energizing plate 38. The upper electrode 32 is replaceably attached to the electrode holder 30, and the electrode holder 30 is attached to the lower portion of the piston rod 29 via the insulating plate 34.
Further, the power supply plate 37 leads to the transformer 35. An upper cutter holder 41, which will be described later, is attached to the lower portion of the piston rod 29 (above the electrode holder 30).

The surplus metal band cutting device 4 has a lower cutter 43 on the binding machine base.
Further, it is provided with an upper cutter 42 which is rotated by the lowering of the upper cutter presser 41 and is engaged with the lower cutter 43 in a scissor-like manner. Although not shown on the lower side of the upper cutter 42,
It is equipped with a spring and normally pushes the upper cutter 42 upward.

The metal band tip locking device 5 has a locking claw 53 at the lower end, and a locking lever 51 configured so that the locking claw 53 is constantly pressed against the binding machine base 1 by a spring 52 with a fulcrum near the bottom as a tie. When the locking claw 53 is attached to the machine base 1 and the locking lever 51 is pushed down, the locking claw 53 forms a gap apart from the binding machine base 1 and the metal band tip can be locked easily.

In order to facilitate the operation of the binding machine, a suspending metal 9 for suspending the binding machine is fixed to a part of the metal band tightening device 2 on a balancer (not shown) or the like. Further, the levers for operating the binding machine are arranged side by side with the operation lever 71 for the metal band tightening apparatus 2 described above, and the operation lever 73 for the metal band welding apparatus 3 and further each mechanism of the binding machine are used. A reset lever 72 for returning to the air cylinder 31 is provided on the upper side of the air cylinder 31.

Now, the operation of the binding machine will be described.

First, the binding machine is placed on the binding object, the metal band is circulated around the binding object, and the tip end thereof is locked by the metal band tip locking device 5 of the binding machine. Then, the metal strips are aligned with the electrode positions of the binding machine to superimpose subsequent metal strips, and further subsequent metal strips are set between the upper cutter 42 and the lower cutter 43 of the surplus metal strip cutting device 4. Then, when the operation lever 71 is pushed down to bring the tightening wheel 22 into contact with the metal band, the air motor 21 starts driving, and the tightening wheel 22 rotates clockwise to circulate the bound object. Tighten the band and tie it tightly. Thus, when the operating lever 73 is pushed down while the stall tension remains on the metal strip, the air cylinder 31 of the metal strip welding device 3 operates to push down the piston rod 29, and the upper cutter retainer 41 and the upper cutter 42. Is pressed to cut the surplus subsequent metal strip set between the lower cutter 43 and the lower cutter 43, and the piston rod 29 is further lowered to cause the upper electrode 32 of the electrode holder 30 to move the metal strip overlapping portion to the lower electrode 32.
Press strongly between and. At the same time, although not shown,
The energizing timer incorporated in the energizing circuit is automatically turned "on", and is turned "off" as the preset energizing time value elapses, and welding is completed. Then, when the reset lever 72 is pushed down, the metal band tightening device 2, the metal band welding device 3, and the surplus metal band cutting device 4 are restored to their original positions. Thus, the locking lever 51 is pushed down to release the metal band tip from the locking claw 53, the binding machine is unloaded from the bundled object, and the binding work by welding the metal bands is completed.

〔effect〕

The portable metal band welding type binding machine provided by the present invention can be used for binding using a metal band without the need for a seal, and can perform the binding work without damaging the bound object, and can be seen conventionally. It can be carried out at a low cost and in a safe condition in terms of quality when it can be carried around by a single user, and will exert great power in the future logistics world and contribute to its development. Believe.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a schematic side view thereof, FIG. 2 is a plan view thereof, and FIG.
FIG. FIG. 4 is a partial cross-sectional view of the metal band welding device. 1 ... Bunding machine base, 2 ... Metal band tightening device, 3 ... Metal band welding device, 4 ... Surplus metal band cutting device, 5 ... Metal band tip locking device, 8 ... Holding lever, 9 ... … Hanging hardware, 21
...... Air cylinder, 22 ...... Tightening wheel, 23 ...... Air cylinder, 29 ...... Piston rod, 30 ...... Electrode holder, 31 ...... Air cylinder, 32 ...... Upper electrode, 33 ...... Lower electrode, 34 ...... Insulation Plate, 35 ...... Transformer, 36 ......, 37 ...... Current carrying plate, 38 ...... Current carrying plate, 39 ...... Piston, 41 ...... Upper cutter presser, 42 ...... Upper cutter, 43 ...... Lower cutter, 51 ......
Locking lever, 52 …… Spring, 53 …… Locking claw, 71 ……
Control lever, 72 ... Reset lever, 73 ... Control lever.

Claims (1)

[Scope of utility model registration request] 1. A portable binding machine including a metal band tightening device, a metal band joining device, and a surplus metal band cutting device, which binds objects using the metal band, wherein a metal band which can be energized is used as the metal band. As the metal band joining device, a pair of electrodes for welding and joining the metal band overlapping part, a pressurization mechanism by an air cylinder for strongly pressing the metal band overlapping part, and a voltage are applied to the electrodes. A portable metal band welding type binding machine characterized by comprising a transformer for energizing electricity and a timer for controlling welding time, and the binding machine has a weight that can be carried by one user.