JPS5834327B2 - How to wrap a film around the end of a long body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of wrapping a film around the end of a long body, and is used for bundling pipes when shipping them.

When transporting a large number of pipes by truck or the like, it is necessary to tightly bundle the pipes so that the pipes do not become loose due to shocks, vibrations, etc. during transport.

Various methods are known for converging a group of pipes, but as shown in FIG.
We have separately proposed a method in which a is made to protrude from the pipe end, and the film width molecules that are pressed against the pipe end are stretched and wound.

According to this focusing method, the film width molecule a protruding from the pipe end is collapsed and the pipe end is supported by the film width molecule a, so even if the pipe group is subjected to shock or vibration. , longitudinal movement of the pipe can be well prevented.

Therefore, stable focusing of the pipe group can be achieved.

To pack the pipes using the pipe bundling method shown in Figure 7, the collecting pipes are automatically fed into a film wrapping device; Automation of winding, that is, film winding, is desired, but so far, no suitable method or device has been found.

The method of wrapping a film around the end of a long body according to the present invention is as follows:
This is a method that can automate the focusing by wrapping the pipe with a film as explained in FIG. The film is conveyed intermittently at regular intervals in a state in which the film is conveyed, and at one side outside the middle of the conveyance path, the film supply bobbin is continuously revolved around the intermediate position of the conveyance path, and the film is fed to the intermediate position of the conveyance path. The film from the film supply bobbin is delivered several times to one end of the elongated body while it is stopped at an intermediate position.
Winding, this winding is carried out after the film supply bobbin passes directly below the above-mentioned elongated object.At this point, the film is cut, and the above-mentioned conveying speed and revolution speed of the bobbin are When the next elongated object mentioned above reaches the intermediate position of the transport path and is stopped at that intermediate position, the film is placed at one end of the elongated object. The cut end of the film on the supply bobbin is fastened with a film presser, and thereafter, the above-described winding of the film, cutting of the film, and fastening of the cut end of the film are carried out on the elongated body that is intermittently conveyed. It is characterized by being repeated sequentially.

The present invention will be explained below with reference to the drawings.

FIG. 1 shows a side view of the device used in the present invention, and FIG. 2 shows a top view of the same device.

In FIGS. 1 and 2, 1 is a pipe conveyor, which is composed of an input conveyor 1a and an output conveyor 1b.

The pipe conveyor 1a has claws 2, 2 at regular intervals.
...... is installed, and the horizontal pipe P1. P2・
... are brought in between these claws in groups of several.

One end of this pipe is carried in by the carrying conveyor 1a.
It is protruding from one side.

The carry-in conveyor 1a runs intermittently as described below,
The carry-out conveyor 1b runs continuously.

Reference numeral 3 denotes a film supply bobbin disposed outside one side of the terminal end of the carry-in conveyor, supported by a rotating arm 31, and revolved at a constant speed in the M direction.

The fulcrum of this rotary arm 31 is indicated by a weight of 0 in the figure, and the bobbin 3 revolves around point O.

4 is an upper cylinder located directly above position O;
A film supply bobbin 3 is attached to the tip of the piston rod 41.
A trowel 42 is attached to press the cut end of the film to the pipe, which will be described later.

5 is a lower cylinder located directly below position O;
At the tip of the piston rod 51, as will be described later, there is a cutter 52 for cutting the film after it has been wound around the collecting tube, and a trowel 5 for fixing the end of the winding film.
3 is installed.

FIG. 3 shows the state immediately after the film f from the film supply bobbin 3 has been wound several times around the pipe group P1, the carry-in conveyor 1a is stopped, and the pipe group P1 is stationary at position O. .

Immediately after this, the lower cylinder 4 is operated and the film f is cut by the cutter 52 as shown in FIG.

During this time, since the bobbin 3 continues to revolve, the film f continues to be drawn out from the bobbin 3, and the length of the film drawn out at the time when the film cutting is completed is made sufficiently long.

Simultaneously with the cutting of the film f (the running of the carry-in conveyor 1a is restarted).

This re-driving of the carry-in conveyor 1a is performed by a signal generated when the rotation of the bobbin 3 (indicated by N in FIG. 4) is stopped.

The pipe group P, around which the film f' is wrapped, is transferred to the carry-out conveyor 1b by the re-travel of the carry-in conveyor, and
The next group of pipes P2 (FIGS. 1 and 2) is sent toward position O.

The traveling speed of the carry-in conveyor 1a and the revolution speed of the bobbin 3 are set so that the bobbin 3 passes directly above the position O before the next pipe group P2 reaches the position O.

Therefore, before the next pipe group P2 reaches the position O, as shown in FIG. There is.

When the next pipe group P2 reaches position O, this curtain-like film drawer end f〃 is lifted onto the pipe group P2 as shown in Fig. 6. In this way, the next pipe group P2 When reaching position O, the running of the carry-in conveyor 1a is stopped again by the operation of the limit switch, and at the same time, the upper cylinder 4 is driven, and the film pull-out end f'' is moved by the trowel 42 to the pipe group P.
It is fixed on 2.

The stopped pipe group P2 is wound with the film f drawn out from the revolving bobbin 3, and this winding is performed several times before returning to the stage shown in FIG. 3.

Thereafter, the steps shown in FIGS. 3 to 6 described above are repeated, and the pipe group P3 sent by the carry-in conveyor 1a is
．． The film is wound around P4...

In the above, the film supply bobbin continuously revolves during the operation of the device, but as shown in FIG. can also be made slower.

As described above, according to the present invention, the film can be automatically wrapped around the ends of the pipes simply by transferring the pipes to the carry-in conveyor. It is possible to efficiently pack pipes by wrapping them with film.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is an explanatory side view of the device used in the present invention;
Figure 2 is an explanatory top view of the same device, Figures 3, 4, and 5.
6 and 6 are explanatory views showing the method of the present invention, and FIG. 7 is an explanatory view showing a pipe convergence method separately proposed by the applicant. In the figure, 1 is a conveyor, 1a is a loading conveyor, 1b
is an unloading conveyor, 3 is a film supply bobbin, f is a film, O is an intermediate position of conveyor path 1, Pl, P2...
. . is a collecting pipe, 41 is a piston rond, 42 is a trowel for fixing the film cut end f〃, 51 is a piston rond, and 52 is a cutter for cutting the winding film f'.

Claims (1)

[Scope of Claims] 1. A long body is oriented laterally on a conveyance path, and one end of the long body protrudes from one side of the conveyance path, and the long body is intermittently conveyed at regular intervals. A film supply bobbin is continuously revolved around the intermediate position of the conveyance path, and one end of the elongated body is sent to the intermediate position of the conveyance path and is stopped at the intermediate position. (During this revolution, the film from the film supply bobbin is wound several times, and after this winding is completed, the film supply bobbin passes directly under the above-mentioned elongated body. At this point, the film is cut and the above-mentioned transport The speed and the revolution speed of the bobbin are set so that the next elongated object passes directly above the intermediate position of the conveyance path (by the time it reaches this intermediate position, the next elongated object mentioned above is conveyed. When the elongated body reaches the intermediate position and is stopped at the intermediate position, one end of the elongated body (the cut end of the film on the film supply bobbin) is fixed by a film presser, and the film is then conveyed intermittently. A method for wrapping a film around an end of a long body, the method comprising sequentially repeating the above-described winding of the film around the long body, cutting of the film, and fastening of the cut end of the film.