JPH06247407A - Brake of tape reel in banding machine with belt - Google Patents

Abstract

PURPOSE:To prevent unnecessary winding off of a tape and increase the replacing workability of a tape reel. CONSTITUTION:As an axial member 30 is provided so as to prohibit the rotation of the core member T1 against a tape holder 20 because it is engaged into the arched section between the linear part 23 of the tape holder 20 and the core member T1 of the tape reel, T, when the tape holder 20 ceases to rotate, the sliding motion of the core member T1 of the tape reel T with the tape holder 20 is securely prohibited and unnecessary winding off of the tape does not occur. And hence, the tape reel can be easily exchanged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape reel braking device in a strapping machine in which postcards, letter envelopes, etc. are piled up with a tape.

[0002]

2. Description of the Related Art As a conventional tape reel braking device in a strapping machine, there is one shown in FIG. That is, the cylindrical paper tube T1 of the tape reel T is externally fitted to the holder 2 fixed to the rotary shaft 1, the tightening nut 3 is rotated to move the stopper member 4 in the axial direction, and the stopper member 4 and the holder After holding the paper tube T1 in the axial direction by holding the paper tube T1 in the axial direction with the flange member 5 of 2, the required amount of tape is fed from the tape reel T, and then the holder 2 is moved to the holder 2 by an electromagnetic brake or belt. The brake is applied to suppress unnecessary rotation of the tape reel T.

In recent years, long tapes have begun to be used and the weight and outer diameter of the tape reel T have increased, and it is necessary to stop the tape reel T which is rotating with a large inertial force in an instant.

[0004]

However, in such a conventional tape reel braking device in the band strapping machine, for example, the stopper member 4 and the flange member 5 are moved to the paper tube T1 by repeatedly stopping the rotation of the tape reel T. Since both edges are rubbed and scraped off, the force for holding the paper tube T1 is weakened, and even when the holder 2 supporting the tape reel T is stopped, the tape reel T has a large inertial force,
The paper tube T1 of slips and rotates with respect to the holder 2,
There was a problem that unnecessary tape was taken out.

On the other hand, when a leaf spring is attached to the holder 2 and the paper tube T1 is fixed to the holder 2 by the frictional force of the leaf spring, the biasing force of the leaf spring increases as the tape reel T becomes larger in diameter and its inertial force increases. Need to be bigger. Further, if the paper tube T1 is fastened from both sides with screws or the like, when the tape reel T is replaced, the work of attaching and detaching the screws is troublesome and the workability is not good.

The present invention has been made by paying attention to such a conventional problem, and it is possible to reliably prevent the tape core of the tape reel and the holder from slipping, thereby preventing unnecessary feeding of the tape, It is an object of the present invention to provide a tape reel braking device in a strapping machine that enables easy reel replacement.

[0007]

The gist of the present invention for attaining the above object is to provide a tape reel in a strapping machine in which postcards or letter-sealed letters and the like are strapped with tape in a stacked state. In the braking device, the tape reel (T) is fixed to the tip of the rotating shaft (1), the tubular core member (T1) of the tape reel (T) is externally fitted, and the outer periphery thereof is partially covered. A tape holder (20) having a linear portion (23) formed in a linear shape, and the tape holder (20) when the tape holder (20) is rotating.
When the tape holder (20) is loosely fitted in the gap (25) of the arcuate section between the straight portion (23) of the core member and the inner peripheral wall of the core member (T1) and the rotation of the tape holder (20) is stopped, (2
5) A tape reel braking device in a strapping machine, comprising: a shaft-shaped member (30) that bites into the tape holder (20) to make the core member (T1) non-rotatable. Exist.

[0008]

The tubular core member (T1) of the tape reel (T) is externally fitted to the tape holder (20) fixed to the tip of the rotating shaft for rotating the tape reel (T).

When the tape holder (20) is rotating, the tape is unwound from the tape reel (T), and postcards or envelopes are stacked and wrapped with the tape. At this time, the shaft-shaped member (30) is loosely fitted in the gap (25) of the arcuate cross section between the linear portion (23) of the tape holder (20) and the inner peripheral wall of the core member (T1).

The tape holder (2
0) when rotation stops, the shaft-shaped member (30) bites into the gap (25) of the arcuate section, and the core member (T1) cannot rotate with respect to the tape holder (20). Thereby,
It is not necessary to feed the excess tape from the tape holder (20).

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 7 show an embodiment of the present invention. As shown in FIGS. 1 to 5, the strapping machine according to the present embodiment,
A postcard or a sealed letter is overlapped with a tape, and the tape is wound around a paper tube T1 which is a tubular core member of a tape reel T.

The strapping machine comprises a support wall plate 10 and a table 12 mounted on the support wall plate 10.
The arch member 14 is erected on the table 12. The tape is delivered from the tape reel T and fed into the arch member 14.

The rotating shaft 1 of the tape reel T is a support wall plate 10.
Is rotatably supported by a bearing member 19 on the rotary shaft 1
An electromagnetic brake 1a is attached to the base end of the.

A tape holder 20 is fixed to the tip of the rotary shaft 1. The tape holder 20 is formed in a shaft shape,
The fitting portion 21 into which the paper tube T1 of the tape reel T is fitted, and the paper tube T having a diameter larger than that of the fitting portion 21 and continuous with the base end of the fitting portion 21.
1 has a flange portion 22 with which it abuts. On the outer periphery of the fitting portion 21, linear portions 23 formed in a linear shape are formed at three equal intervals in the circumferential direction.

That is, the paper tube T1 is fitted in the arcuate portion 24 left on the outer periphery of the fitting portion 21, and an arc shape is formed between the inner peripheral wall of the paper tube T1 and the straight portion 23 of the fitting portion 21. Cross section gap 2
5 is formed.

When the tape holder 20 is rotating, it is loosely fitted in the gap 25 of each arcuate section as shown in FIG. 7, and when the tape holder 20 stops rotating. As shown in FIG. 6, a shaft-shaped member 30 that fits into the gap 25 having an arcuate cross section to make the paper tube T1 non-rotatable with respect to the tape holder 20 is fitted. A straight pin is used for the shaft member 30.

A tape holder 20 is attached to the tip of the rotary shaft 1.
The tape reel T with the paper tube T1 sandwiched by the flange portion 22 of
There is provided a holding member 40 for holding the so as not to rattle.

Next, the operation will be described.

The paper tube T1 of the tape reel T is externally fitted to the fitting portion 21 of the tape holder 20 fixed to the tip of the rotary shaft 1 for rotating the tape reel T. To replace the tape reel T, the paper tube T1 of the tape reel T is pulled out from the fitting portion 21, the paper tube T1 of the new tape reel T is aligned with the tape holder 20, and the tape holder 20 is pushed until it abuts the flange portion 22. You can push in.

When the electromagnetic brake is not operating,
The tape holder 20 is rotatable so that the tape can be delivered from the tape reel T. The fed tape is fed to the arch member 14. The postcards or postcards placed on the table 12 are wrapped with tape in a stacked state.

As the tape is fed out, the tape reel T and the tape holder 20 rotate integrally. At this time, as shown in FIG.
A shaft-shaped member 30 is loosely fitted in a gap 25 having an arcuate cross section between the inner peripheral wall 3 and the inner peripheral wall of the paper tube T1.

When the electromagnetic brake operates and the tape holder 20 stops rotating via the rotary shaft 1, when the paper tube T1 of the tape reel T tries to rotate due to inertial force, the paper tube T1
The shaft-shaped member 30 moves so as to be rubbed against the inner peripheral wall of the
As shown in FIG. 6, the shaft-shaped member 30 has a gap 25 with an arcuate cross section.
The paper core T1 of the tape reel T becomes unrotatable with respect to the tape holder 20,
The tape cannot be taken out from the tape holder 20, and the extra tape is not taken out.

In the above embodiment, the linear portions 23 formed in a linear shape on the outer periphery of the fitting portion 21 are formed at three equal intervals in the circumferential direction, but the shaft-shaped member 30 has three portions. It may be fitted to any place of the place, and since the place is not limited, the work of fitting is easy. Also, the straight line portion 23 is 1
Alternatively, it may be provided at two locations, or four or more locations.

[0024]

According to the tape reel braking device of the strapping machine of the present invention, when the tape holder stops rotating, the gap of the arcuate section between the linear portion of the tape holder and the core member of the tape reel. Since the shaft-shaped member that bites into the tape holder to make the core member non-rotatable with respect to the tape holder is securely provided, the slip between the core member of the tape reel and the holder is securely stopped, and unnecessary feeding of the tape is prevented, The reel can be easily replaced.

[Brief description of drawings]

FIG. 1 is a front view of a main part of a tape reel braking device in a strapping machine according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of essential parts of a tape reel braking device in a strapping machine showing an embodiment of the present invention.

FIG. 3 is a front view of a strapping machine showing an embodiment of the present invention.

FIG. 4 is a cross-sectional view of an essential part of a tape reel braking device in a strapping machine showing an embodiment of the present invention.

FIG. 5 is a partially enlarged view of FIG.

FIG. 6 is an operation explanatory view of the tape reel braking device in the strapping machine showing the embodiment of the present invention.

FIG. 7 is an operation explanatory view of the tape reel braking device in the strapping machine showing the embodiment of the present invention.

FIG. 8 is a cross-sectional view of an essential part of a tape reel braking device in a conventional strapping machine.

[Explanation of symbols]

 T ... Tape reel T1 ... Paper tube 1 ... Rotating shaft 10 ... Support wall plate 20 ... Tape holder 21 ... Fitting part 22 ... Flange part 23 ... Straight part 25 ... Bow section gap 30 ... Shaft member 40 ... Holding member

Claims (1)

[Claims] 1. A tape reel braking device in a strapping machine in which postcards, envelopes, etc. are piled up with a tape, and the tape reel is fixed to the tip of a rotating shaft for rotating the tape reel. A tape holder having a tubular core member fitted on the outside and having a linear portion whose outer periphery is partially formed linearly; and a linear portion of the tape holder and the inner peripheral wall of the core member when the tape holder is rotating. It fits loosely in the gap of the bow section between
A tape in a strapping machine, further comprising: a shaft-like member that bites into the gap of the arcuate cross section to prevent the core member from rotating with respect to the tape holder when the tape holder stops rotating. Brake device for reels.