JPH04267706A - Packaging device - Google Patents

Abstract

PURPOSE:To improve the productivity of a packaging device, and make the installation space smaller. CONSTITUTION:For a packaging device to package a object-to-be-packaged R using a packaging sheet S which is fed on a conveyor or table 3 from a storage unit 1, a packaging unit 4 which is located next to the conveyor or table 3, and a sheet transfer device which receives the packaging sheet S on the conveyor or table 3 and transfers to the above mentioned packaging unit 4 are provided, and a feature of the packaging device is that a holding surface of the packaging sheet S in the sheet transfer device 5 is confronted with the surface of the packaging sheet S on the conveyor or table 3.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging device for packaging objects using packaging sheets delivered from a storage section onto a conveyor or table.

0002

2. Description of the Related Art Conventionally, such packaging devices include, for example, as disclosed in Japanese Utility Model Publication No. 41-13722,
A cylindrical product to be packaged is rolled on a packaging sheet prepared on a conveyor in the direction across the conveyor, and the packaging sheet is wrapped around the cylindrical product. be.

0003

However, the above-mentioned type of packaging apparatus has the following problems. That is, since the wrapping sheet is wrapped around the outer periphery of the wrapping object while rolling on the conveyor that prepares the wrapping sheet, the next wrapping sheet cannot be prepared until the wrapping object passes over the conveyor. Therefore, the waiting time of the packaging sheet preparation device is long.
It takes time to prepare packaging sheets. In particular, in lined packaging processes, objects to be packaged are sent one after another, so one
A slight difference in the packaging time for each individual packaged object has a large impact on the overall productivity. Moreover, the wrapped object is unstable during rolling and is susceptible to the influence of inertia, making it difficult to increase the rolling speed. Furthermore, the packaged objects are likely to be damaged by unevenness on the conveying surface of the conveyor, foreign objects on the conveyor table, etc., resulting in a loss of quality. Furthermore, since transport platforms are provided on both sides of the conveyor and are wider than the width of the objects to be packaged, a large installation area is required. Further, it is difficult to perform edge treatment such as taping both edges at the same time as packaging the outer periphery of the object to be packaged.

[0004] Therefore, in view of the above-mentioned problems, the present invention
The purpose is to provide a packaging device with high productivity and a small footprint.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a packaging device for packaging objects to be packaged using packaging sheets fed from a storage section onto a conveyor or table. a packaging section located beside the conveyor or table, and a sheet transport device that receives the packaging sheet on the conveyor or table and transfers it to the packaging section, the holding surface of the packaging sheet in the sheet transport device and the conveyor or table. It is characterized in that the upper surface of the packaging sheet is opposed to the upper surface of the packaging sheet.

[0006]

[Operation] The surface of the packaging sheet on the conveyor or table faces the packaging sheet holding surface of the sheet transport device, so when the packaging sheet is prepared on the conveyor or table, the sheet transport device The packaging sheet can be received from the conveyor or table onto the holding surface in a short time. Then, as soon as the sheet transport device receives the packaging sheet, the packaging sheet can be received on the conveyor or table, so that the next packaging sheet can be prepared on the conveyor or table even during packaging in the packaging section.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be explained with reference to FIGS. 1 to 5.

FIG. 1 is a plan view of the packaging device, and FIG. 2 is a front view thereof. In FIGS. 1 and 2, S is a packaging sheet, R
For example, a roll-shaped packaged object such as a wound sheet roll, 1
is a first storage section in which materials for the packaging sheet S are stocked;
2 is a second storage section, 3 is a conveyor, 4 is a packaging section that wraps the packaging sheet S around the outer periphery of the object R, and 5 is a sheet transport device.

[0009] The first storage section 1 stores a rolled band-shaped packaging sheet Sa as a material for the packaging sheet S, and has an unwinding device 6 for unwinding the band-shaped packaging sheet Sa.
and a cutting device 7 that cuts the rewound band-shaped packaging sheet Sa in the width direction.

The unwinding device 6 unwinds the belt-shaped packaging sheet Sa from a roll S0 supported between a pair of machine frames 8 by a pull-out roller 9, stores a certain amount on a dancer roller 10, and then unwinds the belt-shaped packaging sheet Sa. The rollers 11 feed the packaged object R to the conveyor 3 by the required amount according to its width. The amount of feed of the strip-shaped packaging sheet Sa can be automatically controlled by a control device (not shown) based on a detection signal of the width of the object R detected in advance. In this embodiment, a roll of adhesive tape 13 is attached to a pair of support arms 12 above a feed roller 11, respectively. The tip of the adhesive tape 13 pulled out through the nip roller 14 is pasted in advance to the edge of the strip-shaped packaging sheet Sa, so that the adhesive tape 13 can be attached to the feed roller 11.
When the strip-shaped packaging sheet Sa is fed out, the adhesive tape 13 automatically sticks along the edge of the upper surface of the strip-shaped packaging sheet Sa with a part of the adhesive part protruding from the strip-shaped packaging sheet Sa. ing. FIG. 3 shows a strip-shaped packaging sheet Sa with adhesive tape 13 attached to both edges.
shows a state where it cannot be fed out from the feeding roller 11 onto the conveyor 3.

The conveyor 3 is a suction belt conveyor, and has a negative pressure box 16 on the underside of an endless flat belt 15 with a large number of holes 15a, the inside of which can be depressurized by a vacuum pump (not shown). The packaging sheet S can be suctioned by the negative pressure box 16 through the suction hole 16a and the hole 15a of the flat belt 15. Then, while adsorbing the packaging sheet S, it can be conveyed downstream by the length fed out by the feeding roller 11 (8 in the embodiment shown in FIG. 3).
(The holes and suction holes for seven of the flat belts are omitted in FIG. 3). Note that adhesive tape 13 is stuck to both edges of the rolled-out strip-shaped packaging sheet Sa, and since the adhesive surface is on the lower side, the adhesive tape 13 can be easily peeled off from the flat belt 15 that supports that part. Materials with high releasability are used. Furthermore, since this embodiment includes the second storage section 2,
The conveyance direction can be reversed.

After the feeding of the strip-shaped packaging sheet Sa has stopped, the cutting device 7 moves the cutting blade 7a in the width direction of the strip-shaped packaging sheet Sa to cut the strip-shaped packaging sheet Sa and the adhesive tape 13 as shown in FIG. Cut along the dashed line. Thereby, the strip-shaped packaging sheet Sa becomes a packaging sheet S.

When the strip-shaped packaging sheet Sa is cut by the cutting device 7, the conveyor 3 cuts the packaging sheet S further downstream.
It is transported to the delivery position shown by the two-dot chain line in FIG. In this embodiment, the conveyor 3 is provided with a stopper 16b for positioning the packaging sheet S more accurately and reliably. This stopper 16b protrudes from the sheet conveyance surface of the conveyor 3 and receives the leading end of the packaging sheet S when the packaging sheet S moves to the delivery position. At this time, the suction force of the negative pressure box 16 is made small to allow the packaging sheet S and the flat belt 15 to slip. When the flat belt stops circulating, the stopper 16b retreats below the conveying surface. The two-dot chain line in FIG. 3 indicates the packaging sheet S positioned at the center of the delivery position. The position of the stopper 16b is controlled by a control device (not shown) to control the position of the packaged object R.
It is automatically controlled based on the width detection signal.

The sheet transport device 5 includes a negative pressure box 17 above the conveyor 3, as shown in FIG. Negative pressure box 17
is provided with a number of suction holes (not shown) on its lower surface, and by depressurizing the interior with a vacuum pump (not shown), the packaging sheet S can be suctioned onto its lower surface. In this embodiment, the suction force of the negative pressure box 17 is made larger than the suction force of the negative pressure box 16 of the conveyor 3. Further, the distance between the upper surface of the flat belt 15 of the conveyor 3 and the lower surface of the negative pressure box 17 is such that the packaging sheet S can be received from the conveyor 3 by the suction force of the negative pressure box 17. Then, when the packaging sheet S arrives at the delivery position on the conveyor 3, the sheet transport device 5
The suction operation of this negative pressure box 17 is started. Thereby,
The packaging sheet S is sucked and received from the top of the conveyor 3 onto the lower surface of the negative pressure box 17, which serves as the sheet holding surface 5a, and can be sucked and held on the lower surface of the negative pressure box 17. Therefore, in this case, there is no need for lifting and lowering operations to transfer the packaging sheet S.

Further, the negative pressure box 17 is movably supported along a pair of rails 18 in order to transfer the packaging sheet S received from the delivery position on the conveyor 3 to the packaging section 4. This rail 18 is provided parallel to the cut edge of the packaging sheet S cut by the cutting device 7. Figure 4
2 is an explanatory diagram showing a side view of the sheet transport device 5 and the packaging section 4. FIG. By the action of the reciprocating mechanism 19, the negative pressure box 17 can be placed at a receiving position shown by a two-dot chain line in FIG. 4 and a supply position shown by a solid line in FIG. According to this embodiment, the reciprocating mechanism 19 includes a pair of racks 20 provided on the left and right sides of the upper surface of the negative pressure box 17, a pinion 21 that meshes with the racks 20, and drives the racks in forward or reverse rotation, as shown in FIG. A motor 22 is provided.

In the packaging section 4, the packaging sheet S supplied from the sheet transport device is wrapped around the outer periphery of the object R to be packaged. The packaging section 4 is equipped with a support device 23 for supporting the packaged object R so that its central axis is parallel to the width direction of the packaging sheet. Furthermore, as shown in FIG. 4, the packaging section 4 includes an edge wrapping device 25 for performing edge wrapping processing on the object to be packaged R almost simultaneously with the wrapping of the packaging sheet S.
is provided.

The support device 23 includes a cart 27 running on a track 26 to facilitate the loading and unloading of the packaged object R.
and a known automatic lifting platform 28 installed on this trolley 27.
and a lifting platform 28 for placing and rotating the packaged object R.
A pair of driven rotating drums 30 supported on the upper machine frame 29
have. When the sheet transport device 5 is at the supply position, the lifting table 28 raises the packaged object R placed on the rotating drum 30 and presses it against the leading end of the packaging sheet S. It is attached to the adhesive tape 13 attached to the sheet S, and after lowering the packaged object R a little by the lifting table 28, the packaged object R is rotationally driven. By doing this, the packaging sheet S is wrapped around the outer periphery of the packaged object R.

In this embodiment, the edge wrapping processing device 25 applies wrapping discs to both end surfaces of the object R around which the wrapping sheet S is wrapped, and wraps the wrapping disks around the outer periphery of the wrapped object R. This is a device for edge wrapping by wrapping an adhesive tape around the edge of the packaging with about half its width protruding, and then folding the protruding part of the wrapped adhesive tape and adhering it to a packaging disc. It also includes an adhesive tape supply device 31 for edge wrapping processing provided on the negative pressure box 17 of the sheet transfer device 5, and a packaging material folding mechanism 32 provided in the machine frame 29 of the support device 23.

The adhesive tape supply device 31 includes a stand 35 for supporting the adhesive tape 34 wound into a roll;
A belt conveyor 36 that feeds out the adhesive tape 34 supported on the stand 35 and supplies it near the tip of the negative pressure box 17, and the tip of the swinging arm 37 supported on the stand 35 for cutting the adhesive tape 34 that has been fed out. and a roller 40 supported at the tip of a swinging arm 39 for pressing the adhesive tape 34 that has been fed out onto the packaging sheet S. The stand 35 is movable in the width direction of the packaging sheet S along a rail 33 attached to the upper surface of the negative pressure box 17.

FIG. 5 is an explanatory plan view of the packaging section. As shown in FIG. 5, the stand 35 has a pair of left and right screws, and the interval between them can be adjusted by rotating a screw shaft 41 having a right-handed screw and a left-handed screw on both sides by a motor 42 that can be driven in both forward and reverse directions. There is. The swing arm 39 of the roller 40 is swingably supported by the negative pressure box 17. Further, the belt conveyor 36 feeds out the adhesive tape 34 attached to the surface of the belt 43. Therefore, in order to automatically peel off the adhesive tape 34 at the tip of the belt conveyor 36 due to its rigidity, the radius of curvature at the tip of the belt conveyor 36 is made small, and the belt has appropriate peelability. I am using it.

The adhesive tape supplying device 31 feeds the adhesive tape 34 according to the width of the object R by controlling the motor 42 by a control device (not shown) based on the detection signal. Attach it in advance to the position corresponding to the edge. Further, after the tip of the packaging sheet S is stuck to the packaged object R, when the packaged object R starts rotating, the adhesive tape 34 is fed out from the tip of the belt conveyor 36, and the swinging arm 39 (not shown) is moved. The roller 40 is oscillated by an actuator and pressed against the outer periphery of the packaged object R. As a result, the adhesive tape 34 is made to adhere to both ends of the packaging sheet S wrapped around the outer periphery of the packaged object R. When the wrapping of the adhesive tape 34 is completed, the swinging arm is swung to a cutting position by an actuator (not shown) to cut the adhesive tape 34.

The packaging material folding mechanism 32 includes brush rollers 46 each rotatably driven by a motor 45 on a pair of stands 44 movable in parallel to the width direction of the packaged object R by a guide surface 43 of the machine frame 29. ing. A pair of stands 44 have screw shafts 47 with right-handed and left-handed screws on both sides.
are rotated by a motor 48 that can be driven in both forward and reverse directions, thereby making it possible to adjust the mutual spacing. The stand 44 is positioned according to the width of the packaged object R similarly to the stand 35 of the adhesive tape supply device 31. Thereby, the brush roller 46 is pressed against the corners of both edges of the object R to be packaged. Then, when the support device 23 starts rotationally driving the packaged object R, the packaging material folding mechanism 32 rotates the brush roller 46 using the motor 45. and,
The protruding portion of the adhesive tape 34 fed out from the adhesive tape supply device 31 and wrapped around the edge of the object R is applied to the end surface of the object R by folding it into the end surface of the object R using the brush roller 46. Adhere to the disc.

When the packaging in the packaging section 1 is completed, the sheet transport device 5 moves to the receiving position shown by the chain line in FIG. On the other hand, as soon as the packaging sheet S is received by the sheet transport device 5, the first storage unit 1 and the conveyor 3 prepare the next packaging sheet S based on the width detection value of the waiting packaged object R. . Therefore, the sheet transport device 5 that has arrived at the receiving position immediately receives a new packaging sheet S, and as shown in FIG.
Return to the supply position shown by the solid line. Meanwhile, the support device 23
The transport conveyor 49 of the packaged object R and the support device 2 on both sides of
By working with the cart No. 3, the packaged object R is carried out for which wrapping has been completed, and the next packaged object R is carried in. Then, the leading end of the packaging sheet S prepared by the sheet transfer device 5 is adhered to a new object to be packaged R supported on the support device 23, and the next packaging is started.

The second storage section 2 has a similar structure and operates in the same manner as the first storage section 1, except that it can store a material having a width different from that of the packaging sheet S supplied from the first storage section 1. do. The storage section from which the packaging sheet S is to be supplied can be automatically selected based on the detection signal of the outer diameter of the object R.

In the case of this embodiment, the first storage section 1 and the second storage section 2 are provided to store strip-shaped packaging sheets Sa of different widths, so that the width and outer circumference of the object to be packaged R may change. However, depending on the outer diameter, the first storage part 1 and the second storage part 2
By selecting one of the strip-shaped packaging sheets Sa, it is possible to reduce the waste of the packaging sheets S. It also includes an edge wrapping device 25 that wraps the edge of the object R supported at a predetermined position by the support device 23, and
Since the edge wrapping process can be performed almost simultaneously with the work of wrapping the material around the outer periphery of the object to be packaged R, the time for wrapping the object to be packaged R can be significantly shortened, and the equipment area for the packaging process can be reduced.

Although one embodiment has been described above, its implementation can be varied in various ways depending on the design conditions and the well-known techniques of the designer.

That is, for example, although the storage portions were provided at two locations in the above-described embodiment, it is natural that they may be provided at one location. It is also possible to provide multiple stages. In addition, when feeding the packaging sheet onto the conveyor, if the belt-shaped packaging sheet is fed onto the conveyor by a length corresponding to the width of the object to be packaged and then cut by a cutting device, the cutting device is used, for example, to cut the packaging sheet into the packaging section. This includes cases in which the wrapping sheet is supported on the frame, etc. of a sheet transport device to be supplied to the conveyor, and the leading edge of the band-shaped packaging sheet is fed out to a delivery position on a conveyor and then cut by a cutting device, or in which the already cut packaging sheet is fed onto the conveyor. shall be held. Moreover, regardless of the type of unwinding device or cutting device, the packaging sheet is not necessarily fed out horizontally, and the packaging sheet may be oriented vertically in the width direction as necessary. In addition, the packaging sheet is paper,
Not limited to film.

[0028] Furthermore, the conveyor by which the packaging sheet is sent out from the storage section is not limited to a suction belt conveyor, as long as the packaging sheet can be attached to a predetermined position in the unfolded state, and if necessary, a negative pressure box or an electrostatic adsorption plate can be used. A movable table or a fixed table such as the above conveyor, or another conveyor without suction function may be used, or the packaging sheet may be held and conveyed on the underside of the conveyor. Further, in order to deliver the packaging sheet to the sheet transport device, it may be possible to approach and separate from the sheet holding surface of the sheet transport device.

Further, the sheet transport device does not necessarily transport the packaging sheet at right angles to the transport direction of the above-mentioned conveyor. Further, it is possible to employ a conveyor or table similar to the conveyor through which the packaging sheet is supplied from the storage section. For example, a suction belt conveyor is used, and a lifting mechanism allows the sheet holding surface of the suction belt conveyor to move forward and backward relative to the packaging sheet on the conveyor. At the same time as adsorption, the packaging sheet is fed onto the conveyor again,
After sending a predetermined amount of the previous packaging sheet to the packaging section, the suction belt conveyor is lowered and the front edge of the next packaging sheet is pressed against the rear edge of the previous packaging sheet on the suction belt conveyor. A subsequent packaging sheet may be connected to the rear portion of the previous packaging sheet to make it applicable to packaging objects having a large outer diameter.

[0030] Furthermore, the packaging section may be equipped with a support device that supports the center of the packaged object instead of the support device that supports the packaged object with a pair of rotating drums, or may be equipped with a support device that supports the center of the packaged object. It may also be provided with a winding device having a mechanism around which the holding means at the leading end of the packaging sheet rotates. In addition, the wrapping process for both edges of the packaged object is not limited to folding and adhering adhesive tape to the end surface of the packaged object, but also using a rotary disk,
It may be provided with a processing mechanism such as edge folding or edge squeezing of the packaging sheet using rollers or the like. Further, it is considered that the adhesion of the leading end of the packaging sheet to the outer periphery of the packaged object is caused by movement of the packaged object, movement of the sheet transport device, or the like. Further, instead of applying adhesive tape to the leading end or end of the packaging sheet, an adhesive may be applied. Further, the object to be packaged is not limited to a roll-shaped object, but may be, for example, a polygonal column-shaped object. Furthermore, a supporting device that does not move up and down may be provided, and the leading end of the sheet may be adhered to the object to be packaged by raising and lowering the sheet transporting device or by a known leading end wrapping device.

[0031]

According to the present invention, packaging sheets can be prepared on a conveyor or table without waiting for the completion of packaging in the packaging section, so the time required to prepare packaging sheets can be significantly shortened. In addition, since the packaged items can be supported and packaged in a predetermined position in the packaging section next to the conveyor or table, the quality of the packaged items is less likely to be compromised during the packaging process and the packaging speed can be increased. You can also do that. Furthermore, it is easy to perform different packaging processes simultaneously. This opens the door to significantly shortening the packaging time until packaging is completed. Therefore, productivity is greatly improved. Furthermore, since there is no need for conveyors on both sides of the conveyor unlike in the past, the installation area can be small.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a packaging device according to an embodiment of the present invention.

FIG. 2 is a front view of a packaging device according to an embodiment of the present invention.

FIG. 3 is an explanatory plan view of a conveyor according to an embodiment of the present invention.

FIG. 4 is an explanatory side view of a sheet transport mechanism and a packaging section according to an embodiment of the present invention.

FIG. 5 is an explanatory plan view of a packaging section of a packaging section according to an embodiment of the present invention.

[Explanation of symbols]

S Packaging sheet Sa band-shaped packaging sheet R　Packaged object 1 First storage section 2 Second storage section 3 Conveyor 4 Packaging department 5 Sheet transport device 6 Rewinding device 7 Cutting device 17 Negative pressure box 18 Rail 19 Reciprocating mechanism 23 Support device 25 Edge packaging processing equipment 32 Packaging material folding mechanism

Claims (1)

[Claims] A packaging device for packaging objects to be packaged using a packaging sheet sent out from a storage section onto a conveyor or table, comprising a packaging section located beside the conveyor or table, and a packaging section that receives the packaging sheet on the conveyor or table. A packaging device comprising: a sheet transporting device for transporting the packaging sheet to the packaging section, wherein a holding surface of the packaging sheet in the sheet transporting device faces a surface of the packaging sheet on the conveyor or table.