JPH0634251Y2 - Arch of automatic baler - Google Patents

Description

[Detailed Description of the Invention] [Industrial application] The present invention relates to a structure of an arch for guiding a tape in an automatic packing machine.

[Conventional technology]

As shown in FIG. 6, the automatic packing machine accommodates a mechanism for feeding the tape, clamping, tightening, welding, cutting, etc. of the tape in the table 1 and forming a part of the table 1 into a frame shape. The formed arch 2 is erected, the arch 2 is covered with a cover 3, and the article A to be packed placed on the table 1 is inserted into the arch 2 to perform packing work.

The arch 2 is provided with a tape running passage for guiding the tape over its entire length, and guides the tape fed to one end side by the feeding roller in the table 1 along the passage to arrange the tape over the entire length of the arch 2. It will be.

By the way, since the tape is comparatively weak and is fed by the feeding roller in the table in a back-pressed state, it is necessary to minimize the frictional force generated between the tape leading end portion and the tape running path.

[Problems to be solved by the device]

In the conventional arch, the tape running path has a uniform space in the tape plane direction over the entire length in the tape traveling direction. As the distance between the tape tip and the tape becomes longer, a frictional force is applied to the tape tip, and the tape may become wavy in the middle to cause a trouble in which the tape cannot run.

In addition, in order to prevent the occurrence of tape running trouble, a structure has been proposed in which a rotating body driven by a power source is arranged in the middle of the tape running path to assist the running of the tape by this rotating body. The arch has a problem that the mechanism is complicated and the manufacturing cost is high.

Therefore, in order to solve the above problems, it is an object of the present invention to provide an arch of an automatic packing machine which has a simple structure and can reduce the occurrence of frictional resistance of the tape running path with respect to the tape tip. There is.

[Means for Solving the Problems]

In order to solve the above problems, the first invention adopts a configuration in which the interval of the tape running path provided in the tape guide arch in the tape plane direction is gradually widened in the tape advancing direction. .

Similarly, the second invention adopts a configuration in which the tape running path provided in the tape guide arch has a wider interval in the tape plane direction continuously in the tape advancing direction.

[Action]

The tape fed into the tape running path of the arch runs along this path, and the path is gradually or continuously widened in the tape traveling direction. As the tape moves away from the tape feeding roller, the contact resistance to the tape tip is less likely to occur, and the tape can reliably travel even in the case of a large arch.

〔Example〕

An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in the figure, the arch 2 is formed in a rectangular frame shape in which the lower part is cut off in the middle and the four corners are bent in an arc shape, and is arranged on the table 1 so as to be upright and positioned on the table 1. Both sides and the upper part are covered with a cover 3 having a U-shaped cross section.

In the first embodiment shown in FIGS. 1 to 3, the arch 2
Has a U-shaped cross section, and the inside thereof is a running path 4 for the tape B, and the open surface of the running path 4 is in the shape of a frame. The upper and lower and straight line portions are pivotally fixed to the cover 3. The lid member 5 closes the open surface of the traveling passage 4 so as to be openable and closable.

Although not shown in the figure, the lid member 5 always elastically closes the open surface of the traveling passage 4 by a spring to prevent the tape B traveling in the traveling passage 4 from being detached.
During the tightening process of the tape B, the tape B is pushed open by the tape B that is reduced in diameter.

The tape running path 4 provided in the arch 2 is gradually widened in the tape plane direction from the receiving end of the tape B toward the tape advancing direction.

In the case of FIG. 1, the interval of the tape running passage 4 in the tape plane direction is set stepwise so as to be gradually increased for each straight line portion, and the inner peripheral surface side of the running passage 4 is a continuous surface over the entire length. .

That is, in the tape running path 4, the gap W '(see FIG. 3) between the straight portions on the left side of FIG. 1 in the tape plane direction (see FIG. 2) is set to be wide. There is.

The first embodiment of the present invention has the above-described structure, and the tape B is supplied to the arch 2 by the feeding roller installed in the table 1 into the tape running path 4.
It is fed from the left end of the figure.

The tape B travels along the tape traveling passage 4, but since the tape traveling passage 4 is gradually widened in the tape traveling direction, a contact resistance of the tape tip to the tape traveling passage 4 is generated. Is gradually decreased in the traveling direction, and the tape B does not become a waveform during traveling,
Even in the case of a large arch, the tape B can be reliably loaded over the entire length.

Next, the second embodiment shown in FIGS. 4 and 5 employs a structure in which the tape running passages 4 provided in the arch 2 are continuously widened in the tape plane direction in the tape traveling direction. It is a thing.

In the second embodiment, the arch 2 is formed into a frame shape with a U-shaped cross section having an opening on one side surface and is cut off at the lower portion, and the arch 2 is provided on the table 1 with a cover 3.
It is movably mounted in the interior through a plurality of springs 6.

As shown in FIG. 5, the arch 2 is constructed so that the open surface of the tape running passage 4 is closed by the side wall 3a of the cover 3 in a natural state so that the tape B running in the tape running passage 4 does not come off. At the same time, during the tightening process of the tape B, the tape B moves due to the diameter reduction of the tape B as shown by the alternate long and short dash line in FIG.

The interval of the tape running path 4 provided in the arch 2 in the tape plane direction is formed so as to continuously widen from the tape receiving end portion on the left side in FIG. 4 along the tape advancing direction.

Also in the second embodiment, the tip of the tape B fed into the tape running path 4 has less contact resistance as it progresses, and even if it is a large arch, the tape B can be reliably loaded over its entire length. .

In any of the embodiments, the tape plane-side interval at the tape receiving side end of the tape running path 4 is set to be the smallest along the entire length of the running path 4, but there is no need to supply the tape B to the arch 2. It does not hinder.

That is, the distance between the receiving end of the arch 2 and the tape feeding roller is short, and a sufficient feeding force is applied to the tape B even if the distance of the traveling passage 4 in the tape plane direction is narrow. It can be sent without any problems.

On the other hand, if the gap in the tape plane direction at the receiving side end of the tape running path 4 is set wide, the guiding function of the fed tape tip is lost, and the tape is wavy from the beginning. , It becomes impossible to load the entire arch length.

〔effect〕

As described above, according to the present invention, the tape running path provided in the arch is made wider in the tape plane direction stepwise or continuously in the tape advancing direction. The frictional resistance of the passage and the passage is reduced in the tape traveling direction, and the tape can be reliably loaded over the entire length of the arch with a simple structure.

[Brief description of drawings]

1 is a longitudinal sectional front view showing a first embodiment of an arch according to the present invention, FIG. 2 is an enlarged cross-sectional view taken along the arrow II-II in FIG. 1, and FIG. 3 is an arrow III- in FIG. FIG. 4 is an enlarged transverse sectional view taken along line III, FIG. 4 is a longitudinal sectional view of the second embodiment, FIG. 5 is an enlarged transverse sectional view taken along arrow VV in FIG. 4, and FIG. 6 is a front view of the automatic packing machine. It is a figure. 1 ... table, 2 ... arch, 3 ... cover, 4 ... tape running path, 5 ... lid member, 6 ... spring, B ... tape.

Claims (2)

[Scope of utility model registration request] 1. An arch of an automatic packing machine in which a tape running path provided in a tape guide arch is gradually widened in a tape plane direction in a tape traveling direction. 2. An arch of an automatic packing machine in which a tape running path provided in a tape guide arch is continuously widened in a tape plane direction in a tape advancing direction.