JPH086724Y2 - Automatic packing machine - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an automatic packing machine for winding and tightening the outer periphery of an article to be packed by using a thin strip-shaped film, and more specifically, for arranging a film as a packing material on the outside of the article to be packed. The present invention relates to an automatic packing machine capable of smoothly feeding a film to an arch provided.

[0002]

2. Description of the Related Art An automatic packing machine is used for packing the outer periphery of an object to be packed in a wound shape by using a thin band-shaped film.

In an automatic packing machine, a frame-shaped arch with a part cut off is erected on a table, and an object to be packed is placed on the table with a film loaded in the arch, and the first end of the film is placed. 1 Clamping step, Tightening step of winding the object to be packed with the film that has been separated from the arch by tightening the film, Second clamping step of holding the middle of the film after the winding to prevent it from loosening, Cutting the middle of the film The cutting process and the welding process of welding the upper and lower opposite ends of the film are sequentially performed, and the film is loaded into the arch each time one packing is completed.

The thin strip-shaped film used for packaging is made of, for example, a thermoplastic synthetic resin having a width of 50 mm and a thickness of 0.10 to 0.15 mm, and such a film is weak and easily deformed. Therefore, the arch has a structure corresponding to the film.

FIG. 5 shows an arch 1 for a film. A guide groove 3 having a width for accommodating the film is formed on one surface side which is an inner circumference of an arch main body 2 which is formed into a frame shape by using a belt-shaped plate and is partially cut away. Provided on the bottom surface of the guide groove 3 are lengthwise ridges 4 arranged in the width direction so as to reduce the occurrence of contact resistance of the film, and the guide grooves 3 are sandwiched on one side of the arch main body 2. It has a structure in which the lid members 5 and 5 are attached so as to be movable in the width direction.

The arch 1 has a partially-separated frame shape so that the guide groove 3 opens on the inner peripheral side, and the lid members 5 and 5 on both sides move toward each other as shown in FIG. 5 to open the guide groove 3. The film projected into the part and fed into the guide groove 3 is prevented from being separated from the guide groove 3, and the both lid members 5 and 5 are laterally separated by a driving device such as a solenoid during the film tightening process. By moving, the opening of the guide groove 3 is completely opened, and the film is separated from the arch 1 without contacting the lid members 5 and 5.

As described above, the arch 1 reduces the occurrence of contact resistance of the fed film and enables loading of the film over the entire length, and when the film is detached, the lid members 5 and 5 are moved laterally, It is designed to prevent deformation.

[0008]

By the way, the above-mentioned arch 1 has the lid members 5 on both sides of the arch main body 2,
5 is configured to move laterally, the gaps 6 and 6 are formed in the overlapping portions of the opening side corners of the guide groove 3 and the lid members 5 and 5.
As described above, the film is extremely thin, and since the feeding tip of the film after the cutting process is a simple cutting, both corners are at right angles, and such a film is When the film is fed into the guide groove 3, the leading edge corner of the film fits into the gaps 6 and 6, and the film is clogged in the middle, which causes a problem that the film cannot be fed.

Therefore, an object of the present invention is to treat the cut end portion of the film so that the film can be reliably fed over the entire length of the arch without being jammed when the film is fed into the arch. To provide an automatic packing machine.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention proposes a cutting end portion, which is a feed-out front end of the film at the time of cutting the film, at a position adjacent to a cutting mechanism for cutting the film halfway. In contrast to this, a configuration is employed in which a shaping mechanism that gives a vertical bending shape that bends in the surface direction is provided.

[0011]

[Function] During the cutting process of the film wrapped with the object to be packed, the shaping mechanism makes the cutting end face the sending end of the film.
Since a three-dimensional bending shape that bends in the direction is given, the tip of the film faces either upward or downward with respect to the film surface, and when the film is fed to the arch, a gap created between the overlapping surface of the arch body and the lid member. In addition, the corner portion of the leading end of the film does not fit in, and the film can be reliably loaded over the entire length of the arch.

[0012]

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

FIG. 1A shows the entire structure of the automatic packing machine. A slide plate 12 is provided on the upper surface of a table 11 on which an object to be packed is placed so as to move back and forth. First clamp 13 and press stand 14
The second clamp 15 is arranged so as to be vertically movable by being supported by the guide 16, and the frame-shaped arch 1 separated by the slide plate 12 is erected on the table 11.
A film delivery / tightening mechanism 17 is provided in the table 11 for feeding the film A into the arch 1 and tightening the film A. The arch 1 has the structure shown in FIG.

The delivery and tightening mechanism 17 is composed of the film A.
A pair of rollers 18 and 19 that are rotated by a motor
The one roller 18 is provided with a pulse ring 20, and the proximity switch 21 detects the rotation of the pulse ring 20 to control the motor, so that the length of the film A sent toward the inside of the arch 1 is constant. It has become.

The pulse ring 20 and the proximity switch 21
In order to improve the accuracy of the length of the film A fed by the motor, as shown in FIG. 1 (B), the detector 41 faces the guide groove 3 on the outer side in the middle of the end of the arch 1 and the guide groove 3. A micro switch 42 for detecting the front end of the film A is arranged by pressing the detector 41 with the front end of the film A moving in the inside of the switch 3.
The motor for driving the roller 18 is switched to a low speed by the signal for detecting the leading edge of the film A by 2.

As described above, when the speed of the motor is switched by the micro switch 42, in feeding the film A into the arch 1, the work efficiency is improved by performing the operation in the first half at a high speed, and the speed in the latter half is reduced, and the motor is operated at a low speed. Since the motor is stopped in the rotating state, it is possible to prevent the motor from excessively rotating due to inertia when the motor is stopped, thereby improving the accuracy of the feeding length of the film A.

The film A is wound on a reel, and is drawn out by the rotation of the rollers 18 and 19 in the feeding direction, passes through the guide 22 and the guiding portion of the first clamp 13, and is second clamped in the arch 1. After being fed from the end portion on the 15th side and passing through the entire length of the arch 1, the tip end thereof projects from the end portion on the first clamp 13 side and faces directly below the slide plate 12.

A vertical movement of the first clamp 13, the press base 14, and the second clamp 15 and a front and rear portion of the slide plate 12 are provided by a cam mechanism 23, and the first clamp 13 and the slide plate 12 together with the slide plate 12 move the film A. The second clamp 15 rises after the tightening process of the film A and clamps the middle of the film A with the slide plate 12 so that the film A is not loosened.

Further, the press table 14 presses the middle and the leading end side of the film A so as to overlap with the lower surface of the slide plate 12 at the time of ascending movement. The upper part of the press table 14 has a surface facing the second clamp 15. 3 is provided with a heater mechanism 24 for welding the film A, and as shown in FIG. 3, the upper end corner edge 25 of the surface facing the first clamp 13 and the upper receiving edge 26 of the first clamp 13 are used to press the press table 14 Forming a cutting mechanism for cutting the middle of the film A when the film A moves upward.

A heater mechanism 24 provided on the press table 14
As shown in FIGS. 4A and 4B, the heating wire 28 is folded back from the upper surface to the back surface of the upper silicon plate 27 formed in a strip shape, and the lower silicon plate 29 is laminated on the lower surface of the upper silicon plate 27. The heating wire 28 is connected to a power source to supply heat to both ends to generate heat, and the overlapping portion of the film A is heat-welded when the press table 14 is raised.

The upper edge corner edge 25 of the surface of the press table 14 facing the first clamp 13 is inclined in the width direction of the press table 14 and the upper edge receiving blade 26 of the first clamp 13 forms a film A.
It is possible to reliably cut the middle of.

As shown in FIG. 3, on the surface of the first clamp 13 facing the press table 14, a concave step portion 30 is provided below the upper end receiving blade 26.
In the concave step portion 30, a shaping mechanism 31 that moves up and down simultaneously with the press table 14 is housed.

The shaping mechanism 31 is housed in the concave step portion 30 and has a cross-section shaped rod 32 whose upper end surface projects in a mountain shape.
And a spring 34 provided between the shaping rod 32 and a spring receiver 33 provided on the press base 14 so as to project into the concave step portion 30.
And a concave groove 34 provided on the upper end surface of the concave step portion 30 so as to receive the upper end of the shaping rod 32. When the film A is cut by raising the press table 14, the shaping rod 32 also rises. Then, the film A is pinched by the shaping rod 32 and the concave groove 34, and the cut end portion which is the tip end when the film A is fed into the arch 1 is shaped.

As shown in FIG. 3, the shaping mechanism 31 is located close to the upper edge corner edge 25 of the press table 14, and the film A is cut by the upper edge corner edge 25 and the upper edge receiving blade 26. The portion extremely close to the cutting position is shaped by pressing with the shaping rod 32 and the concave groove 34. Therefore, when feeding the tape A into the arch 1, as shown in FIG. The shaped portion a having a shape that bends to the one side is provided.

The shaped portion a applied to the tip of the film A is
By selecting the upper end of the shaping rod 32 and the cross-sectional shape of the concave groove 34, it is possible to form a downward curved shape or a mountain shape.

The automatic packing machine according to the present invention is constructed as described above. When the film A is loaded on the entire length of the arch 1 and the object to be packed is placed on the table 11, the start switch is turned on. 1 The clamp 13 moves upward to clamp the leading end side of the film A with the slide plate 12, and then the feeding and tightening mechanism 17 rotates to pull back the film A to separate it to the inner peripheral side of the arch 1, Tighten the outer circumference of the package directly. At this time, the arch 1 includes the lid members 5 and 5 on both sides.
And the film A is removed from the guide groove 3 without any trouble.

After tightening, the second clamp 15 rises, the middle of the film A is clamped to prevent it from loosening, and then the press base 14 moves upward.

The film A is moved by the upward movement of the press table 14.
Is pushed up and the film A is cut by the cutting mechanism, and the shaping mechanism 31 applies the shaped portion a to the end portion of the cut portion of the film A, which is the tip when the film A is fed into the arch 1.

At the same time, the welding mechanism 24 heats and welds the upper and lower overlapping portions of the film A, and when the welding is completed, the first
The clamp 13, the second clamp 15, and the press table 14 return to the lowered position, the slide plate 12 retracts and comes out between the object to be packed and the film A, and the object to be packed can be removed from the table 11.

When the slide plate 12 returns to the forward position, the feeding and tightening mechanism 17 rotates to feed the film A toward the arch 1 by a predetermined length, the film A moves in the guide groove 3, and the entire length of the arch 1 is reached. And will be ready for the next package.

When the film A is fed into the arch 1, the tip of the film A is provided with a three-dimensionally shaped portion a which bends in the plane direction , whereby the tip becomes stiff in the width direction. At the same time, it is bent toward the bottom surface side of the guide groove 3 in the arch 1, so that when the leading end of the film A moves in the guide groove 3, a gap 6 formed between the arch body 2 and the lid members 5 and 5 is formed. , 6 and the film A is not clogged in the guide groove 3 to make loading impossible, and the film A can be loaded to the entire length of the arch 1.

[0032]

As described above, according to the present invention, since the tip of the thin film fed into the arch is provided with a vertical shape that bends in the surface direction , the thickness of the thin film is reduced to 0. 15 mm
The following thin film and a by waist occurs at the tip of Moso, with stable movement of the tip is obtained when traveling induction groove arches film, the guide groove around the arch, even if such a gap As a result, the tip of the film does not fit into this, and the film can be reliably loaded into the arch.

[Brief description of drawings]

1A is a vertical sectional front view of an automatic packing machine according to the present invention, and FIG. 1B is an enlarged cross-sectional view showing a film tip detection switch portion of an arch.

FIG. 2A is a perspective view showing the shape of the leading end portion of the film, and FIG. 2B is an enlarged sectional view of the same.

FIG. 3 is an enlarged front view of a film cutting mechanism and a shaping mechanism.

FIG. 4A is a perspective view of the press table, and FIG. 4B is a side view of the press table.

FIG. 5 is an enlarged perspective view of the main part of the arch.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 arch 2 arch main body 3 guide groove 5 lid member 11 table 12 slide plate 13 first clamp 14 press table 15 second clamp 17 film feeding and tightening mechanism 24 heater mechanism 25 corner blade edge 26 receiving blade 30 concave step portion 31 shaping mechanism 32 Shaped rod 34 spring

Claims (1)

[Scope of utility model registration request] 1. A bottom surface of a film guide groove provided in an arch.
In the length direction to reduce the contact resistance of the film
Protrusions are provided side by side, and the arch is the opening of the film guiding groove.
Open and close the part in the width direction with the lid member, and when opening the film guide groove
The guide groove of this arch has a structure that fully opens the opening part of
Install a thin strip-shaped film with a thickness of 0.15 mm or less inside
It Hama, the outer periphery of the tightening of the tightening process the fill <br/> beam at object to be packed which has left from the arch when, with cutting halfway the cutting mechanism of the rear film, the both end portions of overlap film deposition mechanism In an automatic packing machine designed for welding, a three-dimensional bent shape that bends in the surface direction at the position adjacent to the cutting mechanism that cuts the middle of the film when the film is cut An automatic packing machine, which is equipped with a shaping mechanism that attaches to.