JP2756525B2 - Flat tube feeding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a flat-folded tube made of a synthetic resin such as a heat-shrinkable label or a stretch label made of a self-stretchable film. The present invention relates to an apparatus for supplying a flat tube which is used when mounting a bent tube in a container.

[0002]

2. Description of the Related Art Conventionally, for example, a long flat tube is cut into a predetermined length by a cutting device, and then the cut flat tube is adsorbed on a transfer suction belt and transferred. The two pieces are opened while being sucked by a pair of suction belts, and the opened flat tube is attached to the container.

[0003]

However, in the above-mentioned conventional means, the cut flat tubes are adsorbed on a suction belt for transfer, and a pair of suction belts for opening the flat tubes while transferring the flat tubes in the same direction. Because of the transfer configuration, when the two pieces of the flat tube are attached to each other, the opening cannot be performed reliably, which results in poor opening of the flat tube and high-speed automation cannot be achieved. There were drawbacks.

[0004] The poor opening of the flat tube tends to be particularly pronounced when, for example, a cutting device for cutting the flat tube is configured to hold and cut the flat tube.

The present invention has been made in view of the above-mentioned conventional problems, and when the cut flat tube is supplied to a suction belt device having a pair of suction belts, the flat tube temporarily adheres. It is an object of the present invention to make it possible to reliably open the flat tube with the suction belt device even when the suction belt device is used, and to speed up a series of operations from cutting the flat tube to opening the flat tube. .

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a flat tube 3 cut to a predetermined length by a cutting device 4 is provided with a pair of suction belts 5.
A flat tube supply device for supplying the suction belt device 42 having an opening 3 to the suction belt device 42, the suction device 47 for sucking the cut piece 3b of the flat tube 3;
The flat tube 3 adsorbed by the adsorbent is provided so as to be able to move substantially circularly about the rotation shaft 43, and the other piece 3a is adsorbed to the adsorbing belt device 42 to be delivered. It is to become.

[0007]

In the flat tube feeding apparatus according to the present invention, the adsorbent 47 makes a substantially circular motion about the rotary shaft 43 while adsorbing the cut piece 3b of the flat tube 3 to adsorb the flat tube 3. It is transported to belts 53 and 53a. The suction belt 53 is a flat tube 3 that moves circularly through the suction body 47.
In order to adsorb the other piece 3a, the flat tube 3 is to be transported linearly along the adsorption belt 53.

As a result, one piece 3b of the flat tube 3 moves circularly by the adsorbent 47, and the other piece 3a moves linearly by the suction belt 53.
A relative displacement occurs between a and 3b, the flat tube 3 is forcibly displaced, and even if the two pieces 3a and 3b are attached, the opening is easily and reliably performed. Thus, the poor opening of the flat tube 3 in the suction belt device 42 is eliminated.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 9 show one embodiment of the present invention.
In FIG. 3, reference numeral 1 denotes, for example, a tube cutting device for cutting a long flat tube 3 which is wound in a roll shape and fed downward by a pair of feeding rolls 2 into a predetermined length. A disk-shaped rotary cutter 4 as a device, a rotating mechanism 5 for rotating the rotary cutter 4, and a tension applying device for applying tension to the flat tube 3 when the flat tube 3 is cut by the rotary cutter 4. 6 is provided.

As shown in FIG. 3, the rotation mechanism 5 has a rotation drive shaft 9 connected to an electric motor (not shown) and driven to rotate via a pulley 8 around which a belt 7 is wound. The slide body 12 is fixed to the lower part of the body via one of the holding arms 11. The holding arm 11
On the other side, a rotary balancer 10 is attached. A housing 15 is slidably attached to the slide body 12 via a slide guide 13, and a cutter shaft 16 for supporting the rotary cutter 4 is attached to a tip end of the housing 15.
Are rotatably supported via bearings 17.

Reference numeral 20 denotes a cam body 20 fixed to a casing 19 holding the rotary drive shaft 9. The cam body 20 has a flat plate shape, and a cam follower 22 attached to the housing 15 is provided on the lower surface thereof. A cam groove 23 to be fitted is formed. The cam groove 23 is provided along the circumferential direction of the cam body 20 as shown in FIG. 5, and has a circular arc portion 24 centered on the rotation center O of the rotary drive shaft 9 and a rotary portion for cutting the flat tube 3. It has a curved portion 25 formed in a curved shape so that the cutter 4 moves linearly.

That is, the cutter shaft of the rotary cutter 4
Since the distance between the axis 16 and the cam follower 22 is constant, to move the rotary cutter 4 linearly,
The curved portion 25 needs to have a shape such that its central portion is close to the rotation center O side. It is preferable that the distance L of the moving linear portion of the rotary cutter 4 is set to be substantially equal to or larger than the width L1 of the flat tube 3. Here, the cam body 20, the cam follower 22, the housing 15, and the slide body 12 constitute a cutter moving means.

Reference numeral 27 denotes a guide roller fixed to the cutter shaft 16 so as to be located above the rotary cutter 4. The guide roller 27 is used to move the cam body 20 when the cam follower 22 moves along the arc portion 24. Guide body 28 provided on the upper surface
Rolling. Therefore, the guide roller
By the rolling of the guide body 28 by the 27, the rotary cutter 4 rotates by itself, and the flat tube 3 can be cut in the horizontal direction.

In the tension applying device 6, the lower ends of a pair of swing arms 32 to which a pressing rubber 31 longer than the width of the flat tube 3 is fixed are pivotally supported on a horizontal axis 34 as a fulcrum.
The arm 35 projecting from the 34 is connected to a cam lever 37 that swings by a cam mechanism via a connecting rod 38.

Therefore, immediately before the rotary cutter 4 cuts the flat tube 3, the cam lever 37 swings and the
Since the swing arm 32 is swung in the direction of the arrow a as shown in (1), the pressing rubber 31 can press the flat tube 3 against the receiving member 30. Reference numeral 30a denotes a cutter escape opening groove formed on the front surface and in the longitudinal direction of the receiving member 30 as shown in FIG. 3 and FIG. The tip is inserted, and the flat tube 3 can be reliably cut. Reference numeral 39 denotes a return spring for urging the cam lever 37 so that the pressing rubber 31 is separated from the receiving member 30.

Reference numeral 41 denotes a supply device for transferring the flat tube 3 cut by the tube cutting device 1 to a suction belt device 42 provided below the tube cutting device 1. The supply device 41 comprises: As shown in FIGS. 2 and 8, suction pads 46 for sucking the flat tube 3 are attached to both ends of a rotating body 45 fixed to an end of a rotating shaft 43 which is driven to rotate.
Is inserted so as to be able to move back and forth.

Reference numeral 49 denotes an adsorbent for retracting the adsorbent 47.
With the return springs fitted to the outside, the respective adsorbents 47 are advanced by the cam mechanism 50 fixed to the bracket 51 against the return springs 49 to adsorb the flat tubes 3 from which the adsorbing pads 46 have been cut. . Further, the adsorbent 47 rotated downward by the rotation of the rotating body 45 is moved by the cam mechanism 50 in the same manner as described above.
The suction tube 46 advances to deliver the flat tube 3 to the suction belt device 42, and the suction pad 46 stops the suction after transferring the flat tube 3 to the suction belt device 42.

The suction belt device 42 includes a plurality of pulleys.
52, a pair of suction belts 53, 53a inclined downward and having a plurality of suction holes (not shown) are provided, and one suction belt 53 is provided longer than the other suction belt 53a. The flat tube 3 is delivered to one end of the one suction belt 53. A pair of suction belts 53,
On the inside of 53a, the upstream part is parallel and close to each other, but the downstream part is gradually separated,
Inside the suction belts 53 and 53a, there is a suction chamber.
A suction tube 55 sucks the flat tube 3 through the suction hole to open the flat tube 3 transferred between the suction belts 53 and 53a.

Reference numeral 57 denotes an expanding jig for receiving the opened flat tube 3 and further expanding it.
The flat tube 3 is attached to the rotary table 58, and the flat tube 3 is expanded with the rotation of the rotary table 58. The expanded flat tube 3 is fitted to the container 60 raised from below. I have.

Next, a case where the flat tube 3 is mounted on the container 60 using the above-described apparatus will be described. First, the long flat tube 3 is fed by the feeding roll 2, and the rotary drive shaft 9 rotates to revolve the rotary cutter 4 in the direction of arrow b shown in FIG. At this time, the cam follower 22 of the housing 15 that rotates together with the rotary drive shaft 9 moves along the cam groove 23 of the cam body 20, and when the cam follower 22 moves through the curved portion 25 of the cam groove 23, it slides. Since the housing 15 moves in the radial direction of the cam body 20 via the slide guide 13 with respect to the main body 12, the rotary cutter 4 can be moved linearly along the flat tube 3.

When the cam follower 22 is located at the curved portion 25 of the cam groove 23, the guide roller 27 rolls on the guide body 28, so that the rotary cutter 4 rotates in the direction of arrow c shown in FIG. Then, the rotary cutter 4 moves linearly while cutting the flat tube 3.

Immediately before the cam follower 22 is positioned at the curved portion 25, the cam lever is interlocked with the rotation of the rotary drive shaft 9.
37 swings and the pressing rubber 31 receives the flat tube 3
Press 31. Since the pressing rubber 31 tensions the flat tube 3 downward (longitudinally), the rotary cutter 4 can easily and reliably cut the flat tube 3 in the tension state.

Further, the suction body 47 rotated upward is projected by the upper cam mechanism 50, the suction pad 46 sucks the cut flat tube 3, and is retracted by the return spring 49. When the flat tube 3 is rotated downward while being suctioned by the suction pad 46, the suction body 47 is again protruded by the lower cam mechanism 50, and the suction pad 46 transfers the flat tube 3 to the one suction belt 53. Press.

At this time, as shown in FIG.
Numeral 53 indicates that the other piece 3a of the flat tube 3 is to be sucked and is to be transported linearly. A relative displacement occurs between the other piece 3a adsorbed on the 53 and the one piece 3b adsorbed on the suction pad 46. For this reason, the flat tube 3 is forcibly displaced, and temporarily, both pieces 3a,
Even when 3b is attached, the opening can be easily and reliably made.

Further, the flat tube 3 is a double suction belt.
It is opened while being transported to 53 and 53a, and then dropped into a spreading jig 57 located below it. The expansion jig 57
Is rotated by the rotary table 58, and the flat tube 3 is opened, and the expanded flat tube 3 is fitted on the container 60 to be raised.

The present invention is not limited to the above-described embodiment. As means for rotating the rotary cutter 4 on its own, an electric motor may be used in addition to the configuration in which the guide roller 27 is rolled on the guide body 28. It may be configured to rotate directly. Further, the cutter is not limited to the rotating rotary cutter 4, and may be fixed to the housing 15 or may be configured to hold and cut a flat tube. The design can be freely changed. Furthermore, although the adsorbent 47 is configured to move over the entire circle, it is also possible to move the adsorbent 47 in an arc shape only at least a portion that passes the flat tube 3 to the suction belt device 42, Flat tube 3
It is only necessary that the transfer directions of the adsorbent 47 and the belt device 42 for suction be different at the time of delivery.

[0027]

As described above, according to the present invention, a flat tube cut into a predetermined length by a cutting device is supplied to a suction belt device having a pair of suction belts so as to be opened. An adsorbent for adsorbing a piece of the cut flat tube is provided so as to be able to move substantially circularly about a rotation axis, and the other piece of the flat tube adsorbed by the adsorbent is provided. Since the suction tube device is sucked and transferred by the suction belt device, the two pieces of the flat tube are relatively displaced due to the difference in the transfer direction between the suction member that sucks the flat tube and the suction belt device that receives the flat tube. It becomes possible.

As a result, for example, since the cutting device for cutting the flat tube is configured to pinch and cut the flat tube, even if both pieces are attached, the opening can be easily formed. And it is possible to do it reliably,
There is an advantage that a series of operations from cutting of the flat tube to opening can be speeded up.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing one embodiment of the present invention.

FIG. 2 is a front view including the same section.

FIG. 3 is a cross-sectional side view showing the main part.

FIG. 4 is a side view showing the main part.

FIG. 5 is a plan view including a partial cross section of the rotary cutter portion.

FIG. 6 is a sectional view when the flat tube is cut by the rotary cutter.

FIG. 7 is a schematic diagram showing a delivery state of the cut flat tube.

FIG. 8 is a cross-sectional plan view showing a delivery state of the cut flat tube.

FIG. 9 is a perspective view of a flat tube.

[Explanation of symbols]

3 ... Flat tube, 4 ... Cutting device (rotary cutter), 42 ... Suction belt device, 43 ... Rotary shaft, 46 ... Suction pad, 47 ... Suction body, 53, 53a ... Suction belt

Claims (1)

(57) [Claims] 1. A flat tube (3) cut to a predetermined length by a cutting device (4) is passed through a pair of suction belts (53),
A flat tube supply device for supplying to a suction belt device (42) having an opening (53a), the suction device (47) for suctioning a piece (3b) of a cut flat tube 3 (53). ) Are provided so as to be able to make a substantially circular motion about the rotation axis (43), and the other piece (3a) of the flat tube (3) adsorbed by the adsorbent (47) is attached to the adsorbing belt device (4).
2) A flat tube supply device characterized in that it is configured to be delivered by being adsorbed to the flat tube.