JPH0565127A - Packing device - Google Patents

Abstract

PURPOSE:To make it possible to pack a cylindrical article-to-be-packed by placing a band in the article-to-be-packed by a method wherein one end side of a band is moved along one of the internal or external peripheral surface of an article-to-be- packed, and after the other end side of the band is moved along the other surface of the internal or external peripheral surface, the band is moved along the first peripheral surface and placed together with the first end side. CONSTITUTION:A band 22 is sent out from a band feeding source 23 by a send-out mechanism 24. The leading end of the band 22 is gripped by a first holding mechanism 26, and is moved from one end side to the other end side along one of the internal or external surface of an article-to-be-packed 16. Also, the band 22 is pulled out by a specified dimension by a measuring mechanism 34, and cut by a cutting mechanism 41. In addition, the cut end of the band 22 is gripped by a second holding mechanism 28, and is moved from one end side to the other end side along the other surface of the internal or external surface of the article-to-be-packed 16. Then, the cut end of the moved band 22 is gripped by a third holding mechanism 42, and is moved from the other end side to the first end side along one peripheral surface of the article- to-be-packed 16,; and the cut end is placed together is with the leading end of the band 22. Then, the part put together heat-welded by a welding mechanism 44.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packing device for packing a cylindrical object to be packed through a band inside the object to be packed.

[0002]

2. Description of the Related Art FIG. 18 shows a conventional packing device. This packing device packs a box-shaped object 1 to be packed as shown in FIG. 17 with a band 2 made of polypropylene, for example.
The main body 3 is provided with a gate-shaped guide 4 for guiding the band 2 around the outside of the object to be packed 1, and a welding mechanism for welding both ends of the band 2 wound around the object to be packed 1 in the main body 3. It is equipped with 5.

As shown in FIGS. 19 and 20, the welding mechanism 5 is provided with a heating arm 6 for melting both ends of the band 2 and a holding arm 7 for pressing both ends of the melted band 2. 6 and the presser arm 7,
The cams 10 to 12, which are individually driven by a speed reduction mechanism 9 that decelerates and outputs the rotation of the motor 8, swings and moves up and down.

To explain the operation of packing the objects to be packed 1 by such a packing device, first, the band 2 is sent out from the drum 13 provided on the side portion of the main body 3 by a feeding mechanism (not shown). Then, the band 2 is guided to the gate type guide 4 through the lower side of the receiving plate 14 shown in FIG.
The gate-shaped guide 4 guides the object to be packed 1 placed on the main body 3 so as to go around the outside. Then, the tip portion of the band 2 is finally guided to the lower side of the receiving plate 14 as shown in FIG. After that, the heating arm 6 of the welding mechanism 5 enters between the tip portion of the band 2 and the middle portion of the band 2,
The tip portion and the middle portion of the band 2 are appropriately melted.
Then, the heating arm 6 is retracted and the pressing arm 7 is moved upward to press the tip end portion and the middle portion of the band 2 against the receiving plate 14 to weld them together. After this welding, cutter 1
5 operates to cut an intermediate part of the band 2, and the packing of the object to be packed 1 is completed as described above.

[0005]

In the conventional packing device described above, the box-shaped object 1 to be packed as shown in FIG. 17 can be packed, but as shown in FIG.
The band 2 cannot be packed in the stacked state.

What happens is that the band 2 is attached to the outside of the component 16.
If the parts 16 are wound and packed, the parts 16 may be rectangular, but if the parts 16 are cylindrical, the band 2 slips and comes off the parts 16. Therefore, the bands 2 must be passed inside the parts 16 for packing. However, the conventional packing device has a structure in which the band 2 is wound around the outside of the object to be packed, and the band 2 cannot be passed inside the tubular component 16.

The present invention has been made in view of the above circumstances, and an object thereof is that even a tubular object to be packed can be packed through a band inside the hollow object of the tubular object to be packed. To provide packing equipment.

[0008]

In order to achieve the above object, the packing apparatus of the present invention packs a cylindrical object to be packed with a band, and the band is supplied from a band supply source to the object to be packed. And a delivery mechanism for delivering to a position opposite to one end side of the package, and a tip portion of the band delivered by the delivery mechanism is gripped and the object to be packaged along one of the inner peripheral surface and the outer peripheral surface of the object to be packaged. A first holding mechanism that moves from one end side to the other end side of the package, and a measuring mechanism that pulls out the band from the band supply source in a required size while the first holding mechanism holds the tip of the band. And a cutting mechanism that cuts the band pulled out by the measuring mechanism, and the cut end of the band on the side of the first holding mechanism separated from the band supply source by the cutting mechanism to hold the object to be packed. Inner surface and outside A second holding mechanism that moves from one end side to the other end side of the object to be packed along the other peripheral surface of the surfaces, and the second holding mechanism moves to the other end side of the object to be packed. The cut end of the band was gripped and moved from the other end side to the one end side along the one peripheral surface of the object to be packed, and the cut end of the band was gripped by the first holding mechanism. The present invention is characterized in that a third holding mechanism to be superposed on the tip portion of the band and a welding mechanism to heat and weld both end portions of the superposed bands are provided.

[0009]

The one end side of the band is held by the first holding mechanism and moved along one of the outer peripheral surface and the inner peripheral surface of the article to be packed. The other end of the band (the end cut by the cutting mechanism) is held by the second holding mechanism and moved along the other peripheral surface of the outer peripheral surface and the inner peripheral surface of the article to be packed. After that, the other end of the band is held by the third gripping device, moved along one of the outer peripheral surface and the inner peripheral surface of the object to be packed, and overlapped with one end of the band. Finally, both ends of the band are welded by the welding mechanism.

As described above, since the band is passed inside the tubular object to be packed by the first holding mechanism or the second holding mechanism, the tubular object to be packed can be packed by passing the band inside the object.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
It will be explained based on. In this embodiment, as shown in FIG. 16, for example, two cylindrical objects 16 to be packed are packed in a band made of polypropylene, for example, in a state of being stacked in the axial direction.

In FIG. 1 showing the overall construction of the packing device,
As shown in FIG. 2, reference numeral 21 designates a base, which is composed of a pair of substantially U-shaped base plates 21a, 21a arranged side by side with a gap therebetween. Then, the article 16 to be packed is placed on the base 21 so as to straddle the pair of base plates 21a, 21a.

On the upper left side of the table 21 in the figure, the band 2 is provided.
A drum 23, which is a band supply source around which 2 is wound, is provided, and two sets of feed rollers 24 and 25 as a delivery mechanism are provided on the right side of the drum 23 in the drawing.
The feed rollers 24 and 25 feed the band 22 pulled out from the drum 23 to the right as indicated by the arrow A. The band 22 is moved by the feed rollers 24 and 25 so that the tip end portion thereof moves to the upper right side of the table 21 in the figure. First holding mechanism 26 provided
It will be sent until it reaches.

The first holding mechanism 26 includes a pair of grip claws 2.
6a, 26a, and is provided at the lower end of an arm 27 that is vertically moved by an air cylinder or the like (not shown). The grip claws 26a, 26a are adapted to be opened and closed by a drive source such as an air cylinder (not shown), and grip the tip of the band 22 by the closing operation.

The first holding mechanism 26 and the feed roller 25
A second holding mechanism 28 is provided between and. The second holding mechanism 28 is rotatably provided on the main plate 30 while a large roller 31 is rotatably provided on a main plate 30 fixed to the lower end of an arm 29 that is vertically moved by an air cylinder or the like (not shown). 2 to the rotating plate 32 shown in FIG.
The small rollers 33a and 33b are rotatably provided. The rotation plate 32 is rotated 180 degrees in the vertical direction by a drive source such as a motor (not shown). The rotation center C1 of the rotation plate 32 is the large roller 31.
Is slightly eccentric above the rotation center C2. The rotating plate 32 is always rotated upward by 180 degrees, and the small rollers 33a and 33b are located above the large roller 31. In this state, there is a gap to the extent that the band 22 can pass between the large roller 31 and the small rollers 33a and 33b, and the band 22 sent out by the feed rollers 24 and 25 passes through the gap to form the first band. Of the holding mechanism 26.

When the rotating plate 32 is rotated 180 degrees downward, the small roller 33 is positioned below the large roller 31, but the rotation center C1 of the rotating plate 32 is located at the large roller 31. Since it exists above the center of rotation C2, the gap between the one small roller 33a and the one large roller 31 becomes substantially zero. As a result, the band 22 is attached to the small roller 33 on one side.
The small roller 33a and the large roller 31 which are strongly pressed between a and the large roller 31 and receive the reaction force thereof cannot rotate due to the friction with their bearings, and the band 22 is located between the small roller 33a and the large roller 31. It is sandwiched between.

A measuring mechanism 34 is provided between the first holding mechanism 26 and the second holding mechanism 28. The measuring mechanism 34 includes a screw rod 36 rotated by a motor 35 and an elevating body 37 having a nut (not shown) screwed to the screw rod 36. As shown in FIG. 4, an arm 39 having a roller 38 at its tip is rotatably supported by the elevating / lowering body 37 in the vertical direction, and the arm 3 is also supported.
An air cylinder 40 for rotating 9 is provided. The arm 39 is always in a horizontal state, and the feed roller 24,
The band 22 sent by 25 passes over the roller 38. Then, when the arm 39 is rotated downward by 90 degrees as shown by the chain double-dashed line in FIG. 4, the roller 38 is suspended between the first holding mechanism 26 and the second holding mechanism 28. Away from the band 22 at.

Further, a cutting mechanism 41 for cutting the band 22 is provided between the two sets of feed rollers 24 and 25. The cutting mechanism 41 is composed of a pair of cutters 41a and 41b which are vertically moved by a drive source (not shown).

On the other hand, below the table 21, the third holding mechanism 4 is provided.
2 are provided. The third holding mechanism 42 is composed of a pair of gripping claws 42a, 42a, and is provided on the upper end portion of an arm 43 that is laterally moved in the left-right direction by an air cylinder or the like not shown and is vertically moved by another air cylinder or the like. Has been. Then, the grip claws 42a, 42a are
It is designed to be opened and closed by a drive source such as an air cylinder (not shown), and the cut end portion of the band 22 to be described later is gripped by the closing operation.

Incidentally, the arm 2 of the first holding mechanism 26.
As shown in FIG. 5, the arms 7 of the seventh and third holding mechanisms 42 are arranged so as to be shifted forward and backward so as not to interfere with each other. The gripping claws 26a, 26a and the gripping claws 42a, 42a are, as shown in the figure, bent inward so that the tip portions for gripping the band 22 face each other.

A welding mechanism 44 is provided on the arm 43 of the third holding mechanism 42. This welding mechanism 44
Is the arm 4 of the third holding mechanism 42, as shown in FIG.
3, a mounting base 45 is attached to the mounting base 45, and a receiving plate 46 is supported on the mounting base 45 so as to be horizontally rotatable as shown in FIG.
And the air cylinder 4 also mounted on the mounting base 45
7, a holding frame 48 attached to the rod 47a, and a welding portion 50 attached to the rod 49a of the air cylinder 49 attached to the holding frame 48. The welding part 50 has, for example, three welding pins 53 attached to a heating plate 52 having a heater 51, and an air passage 54 for cooling after welding, which air passage 54 is provided via a solenoid valve (not shown). It is connected to the compressor. Further, the receiving plate 46 has an escape hole 46 for the welding pin 53.
a is formed.

Next, the operation of the above configuration will be described.

Two cylindrical objects 16 to be packed are vertically stacked and placed so as to straddle the base plates 21a, 21a of the base 21, and the packing apparatus is activated. Then, first, the feed roller 2
While rotating the belts 4 and 25 and pulling out the band 22 from the drum 23, the band 22 is fed in the direction of arrow A toward a position facing the upper end side of the article to be packed 16. The band 22 sent in the direction of the arrow A includes the large roller 31 and the small roller 33a of the second holding mechanism 26,
33b, passes over the roller 38 of the measuring mechanism 34 held in a horizontal state, and enters between the pair of gripping claws 26a, 26a of the first holding mechanism 26. Then, when the tip of the band 22 enters between the pair of gripping claws 26a, 26a, the feed rollers 24, 25 are stopped to stop further feeding of the band 22, and as shown in FIG. The claws 26a, 26a close and hold the tip of the band 22.

Next, the arm 27 of the first holding mechanism 26 descends, whereby the first holding mechanism 26 pulls out the band 22 from the drum 23 as shown in FIG. The surface 16 is pulled down from the upper end side which is one end side of the article 16 to the lower end side along the outer peripheral surface. Then, when the tip end of the band 22 reaches the upper end portion of the lower article 16 to be packed, the arm 27 stops the descending operation.

When the arm 27 stops the lowering operation, the motor 35 of the measuring mechanism 34 is activated to rotate the screw rod 36 and raise the elevating body 37 to a required amount, for example, the position shown by the chain double-dashed line in FIG. .. Then, the roller 38 moves to the band 22.
The band 22 is pulled out from the drum 23 by a required length because the band 22 is hooked up and raised. And the lifting body 3
When 7 stops at the position shown by the alternate long and two short dashes line in FIG. 9, the cutters 41a and 41b of the cutting mechanism 41 operate as shown in FIG. 9 to cut an intermediate part of the band 22. As a result, the band 2 having a necessary and sufficient length for packing the article 16 to be packed is provided.
2 is obtained.

Now, when the band 22 whose tip is held by the first holding mechanism 26 is separated from the drum 23 side, the motor 35 of the measuring mechanism 34 is activated again and the screw rod 3
6 is rotated to raise the lifting / lowering body 37 to the position shown by the solid line in FIG. As a result, the cut end of the band 22 becomes the second end.
Of the holding mechanism 28 is pulled close to the small roller 33b. After that, the rotating plate 32 of the second holding mechanism 28 is moved to the position shown in FIG.
As shown in FIG. 3, the cut end of the band 22 is pinched between the large roller 31 and the small roller 33a. Further, the cut end of the band 22 is turned to the right side in the figure by turning the turning plate 32.

In this way, the cut end of the band 22 is the second
When held by the holding mechanism 28, the air cylinder 40 of the measuring mechanism 34 operates to rotate the arm 39 downward by 90 degrees as shown by the chain double-dashed line in FIG. 4 and remove the roller 38 from the band 22. .. Next, the arm 2 of the second holding mechanism 28
9 moves downward, which causes the second holding mechanism 28 to move to the position shown in FIG.
As shown in FIG. 2, the band 22 is pulled down along the inner peripheral surface of the object 16 to be packed from the upper end, which is one end of the object 16, to the lower end. Then, the lowering operation of the arm 29 is completed when the second holding mechanism 28 passes through the lower article 16 to be packed and projects downward from the gap between the pair of base plates 21a, 21a.

Now, the second holding mechanism 28 serves as the pair of base plates 2
When projecting downward from 1a, 21a, the cut end of the band 22 causes the pair of gripping claws 42a, 42 of the third holding mechanism 42 to move.
Intrude between a. Therefore, the pair of grip claws 42a, 42a
Closes and grips the cut end of the band 22.
Then, the rotating plate 32 of the second holding mechanism 28 is rotated upward by 90 degrees as shown in FIG. 13, and the large roller 38 is rotated upward by 90 degrees so as to lie on the rotating plate 32. Remove from band 22.

When the cut end of the band 22 is transferred from the second holding mechanism 28 to the third holding mechanism 42 in this manner, the arm 43 of the third holding mechanism 42 laterally moves to the right in the drawing, The cut end of the band 22 is moved to the outside of the article to be packed 16. Next, the arm 43 of the third holding mechanism 42 moves up, whereby the third gripping mechanism 42 moves the band 22 along the outer peripheral surface of the inner and outer peripheral surfaces of the article to be packed 16 as shown in FIG. It is pulled up and superposed on the tip of the band 22 held by the first holding mechanism 26.

When both ends of the band 22 are overlapped,
The receiving plate 46 of the welding mechanism 44 rotates from the position shown by the chain double-dashed line in FIG. 7 to the position shown by the solid line, and enters the back side of the overlapping ends of the band 22. Next, the air cylinder 47
Moves forward and moves the mounting base 45 to the receiving plate 46 side,
Both ends of the band 22 are sandwiched between the receiving plate 46 and the tip of the holding frame 48. After that, the heater 51 is energized to heat the welding pin 53. Then, when the welding pin 53 is sufficiently heated, the air cylinder 49 advances to move the welding portion 50 to the receiving plate 46 side. This allows
As shown in FIG. 15, the welding pin 53 melts and overlaps both ends of the band 22, and penetrates the band 22. Thereafter, the air cylinder 49 is retracted to pull out the welding pin 53 from both ends of the band 22, and compressed air is blown out from the air passage 54 to cool and solidify the portion melted by the welding pin 53. Fix both ends of.

After this, the grip claws 26 of the first holding mechanism 26
a and the grasping claws 42a of the third holding mechanism 42 are opened to release the grasping of both ends of the band 22. Then, the arm 27 of the first holding mechanism 26 and the arm 29 of the second holding mechanism 28 move up to return to their original positions, and the arm 43 of the third holding mechanism 42 moves down, then leftward. Move horizontally to return to the original position. Further, the rotating plate 32 of the second holding mechanism 28 is rotated 90 degrees upward to return to the original position, and the motor 35 of the measuring mechanism 34 is rotated in the reverse direction to return the elevating body 37 to the original position. And the roller 38 downwards by 90
Turn it once to return it to its original horizontal position. Thus, everything is returned to its original state and the next packing operation is performed.

In the above embodiment, the first holding mechanism 26
The tip end of the band 22 is moved along the outer peripheral surface of the article to be packed 16 by the second holding mechanism 28, and the cut end of the band 22 is moved along the inner peripheral surface of the article 16 to be packed. The third holding mechanism 42 moved along the outer peripheral surface of the article to be packed 16, but the first holding mechanism 26 moved the distal end portion of the band 22 along the inner peripheral surface of the article to be packed 16, The second holding mechanism 28 moves the cut end of the band 22 along the outer peripheral surface of the article 16 to be packed, and then the third holding mechanism 42 moves it along the inner peripheral surface of the article 16. May be.

Besides, the present invention is not limited to the embodiments described above and shown in the drawings. For example, various band holding configurations of each holding mechanism can be considered, and various modifications can be made without departing from the scope of the invention. It can be implemented.

[0034]

As described above, according to the present invention, even a cylindrical object to be packed can be packed by passing a band inside the cylindrical object to be packed.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention.

FIG. 2 is a plan view of a table on which an object to be packed is placed.

FIG. 3 is an enlarged front view of a second holding mechanism.

FIG. 4 is a side view of the main part of the measuring mechanism.

FIG. 5 is a plan view showing a positional relationship between a first holding mechanism and a third holding mechanism.

FIG. 6 is an enlarged front view of the welding mechanism.

FIG. 7 is a plan view for explaining the operation of the receiving plate of the welding mechanism.

FIG. 8 is a view corresponding to FIG. 1 for explaining the operation of the first holding mechanism.

FIG. 9 is a view corresponding to FIG. 1 for explaining the operation of the measuring mechanism and the cutting mechanism.

FIG. 10 is a view corresponding to FIG. 1 for explaining the operation of gripping the band by the second holding mechanism.

FIG. 11 is a view corresponding to FIG. 1 for explaining the operation of removing the band from the measuring mechanism.

FIG. 12 is a view corresponding to FIG. 1 for explaining the operation of the second holding mechanism.

FIG. 13 is a view corresponding to FIG. 1 for explaining the operation of gripping the band by the third holding mechanism.

FIG. 14 is a view corresponding to FIG. 1 for explaining the operation of the third holding mechanism.

FIG. 15 is a view corresponding to FIG. 6 for explaining the operation of the welding mechanism.

FIG. 16 is a vertical cross-sectional view of an object to be packed, showing a state of packing with a band.

FIG. 17 is a perspective view of an object to be packed packed by a conventional packing device.

FIG. 18 is a front view of a conventional packing device.

FIG. 19 is a sectional view showing a schematic configuration.

FIG. 20 is a perspective view showing a band welding mechanism.

[Explanation of symbols]

16 is an object to be packed, 21 is a stand, 22 is a band, 24, 25
Is a feed roller (delivery mechanism), 26 is a first holding mechanism, 2
7 is an arm, 28 is a second holding mechanism, 29 is an arm, 3
2 is a rotating plate, 34 is a measuring mechanism, 37 is a lifting body, 41 is a cutting mechanism, 42 is a third holding mechanism, 43 is an arm, 44 is a welding mechanism, 46 is a pedestal, 48 is a holding frame, 50 Is the welded part,
Reference numeral 51 is a heater, 53 is a welding pin, and 54 is an air passage.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeo Sumiyoshi 1-1-16 Kita-Shinagawa, Shinagawa-ku, Tokyo Itoman Engineering Co., Ltd.

Claims (1)

[Claims] 1. A packing object for packing a tubular object to be packed by a band, and a sending mechanism for sending the band from a band supply source to a position facing one end of the object to be packed, and a sending mechanism. A first holding mechanism that grips the tip of the band and moves from one end side to the other end side of the packaged object along one peripheral surface of the inner peripheral surface and the outer peripheral surface of the packaged object. A measuring mechanism for pulling the band from the band supply source to a required size while the first holding mechanism holds the tip of the band; and a cutting mechanism for cutting the band pulled out by the measuring mechanism. The cut end of the band on the side of the first holding mechanism separated from the band supply source by the cutting mechanism is gripped and the packaged object is packed along the other peripheral surface of the inner peripheral surface and the outer peripheral surface of the packaged object. From one end to the other end A second holding mechanism that moves and a cut end portion of the band that is moved to the other end side of the object to be packed by the second holding mechanism are gripped to move along the one circumferential surface of the object to be packed. A third holding mechanism that moves from the other end side toward the one end side and overlaps the cut end of the band with the tip end of the band held by the first holding mechanism, and heats both ends of the overlapped bands. A packaging device comprising a welding mechanism for welding.