JPH0479900B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for unpacking a package containing a large number of articles.

Items to be packed may be unpacked, packaged single items, or multiple items may be wrapped with the same packaging material to form a single package.

When producing canned goods, the can body is filled with the contents, and then a can lid is wrapped around the opening of the can body. Such canned products are sent to subsequent processes such as retort processing as necessary.

[Prior Art] A large number of can lids are stacked and packaged to form a cylindrical package 2 (FIG. 3), and such a package 2 is shown in FIGS. 1 and 2. A pallet 5 on which a required number of packages 1 are stacked in a required number of stages is transported to a pallet lift position by an infeed conveyor, with a required number of packages 1 arranged in a row interposed by a neck tape 3 bent in a zigzag shape. Then, package 1 on this pallet
When the uppermost package 2 is raised to the position where it is sent to a post-processing device such as a seaming machine, the snake tape 3 on the upper surface is pulled up by the suction device, and the uppermost package 2 and the snake tape 3 are removed. The snake tape is cut with a cutter to unwrap the package 1 with a gap formed between the snake tape 3 and the package 2 released from the snake tape 3, and then pushed out to the next process with a pusher. .

Such a conventional unwrapping device was developed by the applicant,
No. 52-1188.

[Problems to be Solved by the Invention] However, in the conventional unpacking device configured as described above, in order to ensure that the snake tape 3 is cut by the cutter, the cut portion of the snake tape 3 must be lifted and held by a suction device. However, with the conventional method using a suction device, it is not always possible to lift and hold the snake tape 3 reliably, and wrinkles tend to occur at the suction point of the snake tape, resulting in incomplete cutting by the cutter. Something happened. In addition, since the left and right sides of the cut portion of the snake tape are loose without being restrained after being cut, the loose portions may get caught on the pusher and the snake tape 3 may be pulled, disturbing the appearance of the package. Ta.

This invention has been made in view of the above-mentioned circumstances, and it is possible to securely pull up and hold the snake tape when cutting the snake tape when unwrapping the package, and to avoid wrinkles at the cut portion of the snake tape. To provide a packaging unwrapping device that can reliably perform cutting with a cutter without causing any damage, and can also reliably process both sides of the snake tape cut point and reliably extrude the packaging in a subsequent process. The purpose is to

[Means for Solving the Problem] Corresponding to this object, the package unwrapping device of the present invention has a structure in which a plurality of package stages formed by arranging a plurality of packages in the left-right direction are arranged in a snake shape bent in a zigzag shape. A package unwrapping device for unwrapping a package packed with a tape interposed therebetween, a vacuum slider device capable of adsorbing and displacing one end of both sides of the cut portion of the snake tape; A snake gripper device that is movable in the front-rear direction and the left-right direction and is capable of gripping and lifting the vicinity of the other end of the snake tape to be cut; and a cutter device that is movable in the front-rear direction and capable of cutting the snake tape. and a feed roll having a pair of rolls located near one end in the left and right direction of the package, capable of moving toward and away from each other by relative displacement in the vertical direction, and capable of working together to feed the snake tape. and a snake clamp device that is located near the other end in the left-right direction of the package and restrains the one end of the snake tape, and the pair of rolls in the feed roll device is configured to clamp the snake tape. The snake gripper device is characterized in that the snake gripper device can be moved toward and away from the snake gripper device by relative displacement between a close position sandwiching the snake gripper device and a remote position through which at least a portion of the snake gripper device can pass.

[Operation] The unpacking operation in the package unwrapping device configured as described above is as follows.

When the package rises into the unwrapping space, the vacuum slider device attracts and pulls up the topmost snake tape, the snake gripper grips the snake tape, and the cutter device cuts across the snake tape. A snake gripper carries the cut end of the snake tape to a feed roll device, and the feed roll device rotates while sandwiching the snake tape and discharges the snake tape. The package exposed at the top is pushed out to the next process by a pusher.

In the case of extruding the next package, the vacuum slider, snake clamp device, and feed roll device work together to tension the snake tape in an elevated state and extrude the package with a pusher.

In the case of extrusion of the third stage package, the snake tape is ejected by a feed roll device to expose the package and extruded by a pusher.

The above operations are repeated to unwrap the package.

[Example] In FIGS. 1 and 2, 1 is a package, and a large number of packages 2 are packed using snake tape 3.

The package 2 is, for example, a large number of can lids (not shown) stacked together and wrapped using wrapping paper, and has a short cylindrical shape as a whole as shown in FIG. 3.

Assuming that the directions of the three orthogonal axes of the three-dimensional coordinates are the left-right direction, the front-back direction, and the up-down direction, a large number of packages 2 are arranged in parallel in the left-right direction to form one tier 4, and this one tier 4 is arranged in the up-down direction. are stacked on top of each other.
At this time, the packages 2 of the package 1 as a whole are arranged in a staggered arrangement. A snake tape 3 meandering in a zigzag manner is interposed between each stage 4 of the package 2 to bind the package 2 together.

A cardboard pallet 6 is placed on top of the pallet 5, and the lower end of the snake tape 3 is folded under the cardboard pallet 6, as shown in FIG. Further, the upper end of the snake tape 3 is fixed to the snake tape 3 which is applied to the packaging body 2 one level below with a packing tape 7, as shown in FIG.

The purpose of the package unwrapping device of the present invention is to unpack such a package 1.

As shown in FIGS. 6, 7, and 8, the package opening device 11 includes a snake gripper device 12, a cutter device 13, a feed roll device 14, a vacuum slider device 15, and a snake clamp device 16. It is equipped with

The snake gripper device 12 has the function of picking up the cut portion of the snake tape 3 and removing the cut end from above the stage 4 of the package 1 after cutting the snake tape.

The snake gripper device 12 is shown in FIGS.
As shown in FIG. 0, it is provided with an upper gripper finger 21 and a lower gripper finger 22 in the form of a long rod. The lower gripper finger 22 is rotatably displaceable with respect to the pin 23 and is driven by a pneumatic cylinder 24 and can cooperate with the upper gripper 21 to clamp the snake tape 3. The upper gripper finger 21 and the lower gripper finger 22 are supported by a sliding frame 25, and a linear bearing 26 is attached to the sliding frame 25, and the linear bearing 26 is connected to the pneumatic cylinder 28. By operation, it can slide along a guide bar 27 arranged in the front-rear direction. In this way, the upper gripper finger 21 and the lower gripper finger 22 are movable back and forth along the guide bar 27, that is, in a direction across the snake tape 3, by the operation of the pneumatic cylinder 28.

On the other hand, the guide bar 27 is supported by another sliding frame 31, and the other sliding frame 31 is suspended from another guide bar 33 by a linear bearing 32. The other guide bar 33 is attached to the fixed frame 35 by a mounting bracket 34. Therefore, the upper gripper finger 21 and the lower gripper finger 22 are movable in the left-right direction along the other guide bar 33 by the operation of the pneumatic cylinder 36.

As shown in FIGS. 11 and 12, the cutter device 13 has a motor 42 attached to a frame 41, and a rotating blade 44 attached to a rotating shaft 43 of the motor 42. The frame 41 is a pneumatic cylinder 45
It is attached to the piston of pneumatic cylinder 4.
It is movable in the front-back direction by the operation of 5. Therefore, the cutter device 13 cuts the snake tape 3 by crossing the snake tape 3 while the rotary blade 44 rotates.
cut.

As shown in FIGS. 13 and 14, the feed roll device 14 is located near one end of the package unwrapping device 11 in the left-right direction. The feed roll device 14 has a snake roll 51 and a press roll 52 on the upper and lower sides.
The snake roll 51 has a rotation axis in the front and back direction,
The snake tape 3 can be rotated and fed by the operation of the motor 53 .

The press roll 52 has a rotation axis in the front and back direction,
Moreover, it can be moved up and down by the operation of the pneumatic cylinder 54, and comes into contact with and leaves the snake roll 51.

The press roll 52 rises and the snake roll 5
1, the two work together to pinch the cut snake tape 3, feed the snake tape 3, and remove it from the package 1.

On the other hand, when the press roll 52 is lowered and a gap is created between the snake roll 51 and the press roll 52, the upper gripper finger 21 of the snake gripper device 12 and the upper gripper finger 21 of the snake gripper device The lower gripper finger 22 can pass through the snake tape 3 while gripping it.

The vacuum slider device 15 is a frame 61
It is provided with two vacuum parts 62 facing downward. Due to the movement of the frame 61, the vacuum part 62 snaps the snake at a position facing the upper and lower gripper fingers 21, 22 of the snake gripper device 12 across the cutting position of the snake tape 3 that the cutter device should cross in the left-right direction. It can be displaced between a suction position where the tape 3 is suctioned (the position shown by the imaginary line) and a retreat position (the position shown by the solid line) where it is retreated above the end of the package 1. frame 6
1 movement is controlled by a pneumatic cylinder (not shown).

The snake clamp device 16 has a pair of arms 7
1. It has a restraining plate 72. The arm 71 is attached to a rotating shaft 73 provided in the vertical direction, and as the rotating shaft 73 rotates, the arm 71 swings in a manner similar to opening and closing a door. When the arm 71 is in the open state shown by the imaginary line, it does not interfere with the snake tape 3, but when it is in the closed state shown by the solid line, the plate 7 holds down the cut end of the snake tape 3 in the raised state.
Work together with 2 to hold down. A pinion 7 is attached to the rotating shaft 73.
4 is mounted, the pinion 74 is driven by a rack 75, and the rack 75 is driven by an air cylinder 76.

A pusher 81 is located behind the package unwrapping position. The pusher 81 has a rod shape provided in the left-right direction, and is movable in the front-rear direction via a guide bar 82 by the operation of a pneumatic cylinder (not shown). The one stage that has reached the top is pushed forward to send it to the next process.

In the package unwrapping device 11 configured in this way, the unwrapping operation is performed as follows.

When the package 1 rises into the unwrapping space, the vacuum putt 62 descends and adsorbs one side end 92 of the cut point 63 of the snake tape 3 at the top of the package 1, and the vacuum putt 62 rises again to remove the snake tape. 3. Pull up one side end 92 of 3. This creates a gap between the uppermost package 2 of the package 1 and the uppermost snake tape 3. Next, the upper gripper finger 21 and the lower gripper finger 22 of the snake gripper device 12 are moved forward by the operation of the pneumatic cylinder 28, and the upper gripper finger 21 reaches above the snake tape 3. ,
Lower Gritsper Finger 22 is Snake Tape 3
and the uppermost stage 4a of the package 2. Next, the lower gripper finger 22 is raised by the operation of the pneumatic cylinder 24 to the position where the upper gripper finger 21 is waiting, and in this raised position, the upper gripper finger 21 and the lower gripper finger 22 cooperates with each other to hold the other end 91 of the snake tape 3 at the cut point in a pinched state.

In this way, the cut point 93 between the one side end 92 and the other side end 91 of the snake tape 3 is maintained in a raised state above the uppermost stage 4a of the package 2.

The motor 42 then operates and the pneumatic cylinder 4
5 is activated, the rotary blade 44 rotates and moves forward to cut the snake tape 3 at the cutting location 93.

When the snake tape 3 has been cut, the rotary blade 4
4 retreats to the original retreat position.

At this time, the other ends 91 on both sides of the cut point 93 of the snake tape 3 are connected to the upper and lower gripper fingers 2.
1 and 22, and one end 92 is held attracted to the vacuum pad 62.

The vacuum pad 62 is then retracted above the end of the unwrapping space, thereby removing the snake tape 3.
One side end 92 of is in a raised state in front of the restraining plate 72. Next, the arm 71 is closed and one end 92 of the snake tape 3 is placed between the holding plate 72 and the arm 71.
After that, the suction of the vacuum part 62 is released.

On the other hand, the upper and lower gripper fingers 21, 22
is moved toward the feed roll device 14 by the operation of the pneumatic cylinder 36 while holding the other end 91 of the snake tape 3 . At this time, the press roll 52 of the feed roll 14 is lowered and the space between the snake roll 51 and the place roll 52 is open, so the upper and lower gripper fingers 21 and 22 pass between both rolls 51 and 52. do. After this passage, the press roll 52 rises and contacts the snake roll 51, thereby pinching the other end 91 of the snake tape 3. When the snake roll 51 rotates in this state, the snake tape 3 is fed and discharged. In this way, the snake tape 3 is no longer on the top surface of the package 1, so the pusher 81 moves forward and removes the package 1 from the top 4a of the package 1.
is sent to the next process.

When sending out the package 2 of the next stage 4b, the package 2 first rises by one stage into the unwrapping space, and then the vacuum pad 62 adsorbs the snake tape 3 and rises. At this time, the press roll 52
Since the vacuum pad 62 descends and releases the snake tape 3, the movement of the vacuum pad 62 to rise while adsorbing the snake tape 3 is not hindered. Vacuumpat 62 which has risen by adsorbing Snake Tape 3
moves backwards above the end of the unwrapping space while holding the snake tape 3 by suction, and the arm 71 of the snake clamp device 16 operates to remove the snake tape 3.
, and the vacuum patch 62 releases the snake tape 3.

Next, the press roll 52 rises again to sandwich the snake tape 3, and the snake roll 51 rotates until the snake tape 3 is stretched. As a result, the snake tape 3 on the top surface of the second-stage package 2
is in a state where it is pulled by the snake clamp device 16 and the feed roll device 14 at an upper position away from the package 2. In this state, the pusher 81 operates again to send the package 2 to the next process.

Next, the snake clamp device 16 releases the snake tape 3, and the released snake tape 3
is discharged by the feed roll device 14.

In this way, the feeding of the packages 2 of the second stage 4b is completed.

Next, when sending out the package 2 of the third stage 4c, the snake tape 3 is sent directly to the feeding roll device 14.
As the snake tape 3 on the package 2 in the third stage 4c continues to be discharged, the snake tape 3 on the package 2 in the third stage 4c is exhausted, so the package 2 is sent out again by the pusher 81 in this state.

The feeding operation of the packages 2 on the fourth stage 4d is the same as the feeding operation of the packages 2 on the second stage 4b.

The delivery of the packages 2 from the fifth stage onward is performed by repeating the above operations.

[Effect of the invention] In the package unwrapping device of this invention, two parallel
Since the area near the cut point of the snake tape is picked up with the gripper finger of the book, wrinkles do not occur at the cut point of the snake tape, and the cut can be performed reliably with the cutter, allowing the package to be transferred to the next process. can be sent easily and reliably.

Furthermore, it is quite difficult to pick up the snake tape by vacuum suction and pinch it onto the snake feed roll, but in this invention, the snake tape is held between the snake roll of the snake feed roll and the press roll while the snake tape is held by the rod-shaped gripper. This ensures that the snake tape is caught in the snake feed roll.

[Brief explanation of the drawing]

Figure 1 is a front view of the package, Figure 2 is a side view of the package, Figure 3 is a perspective view of the package, Figure 4 is an illustration of the upper end of the snake tape, and Figure 5 is the snake tape. An explanatory view of the lower end of the tape, FIG. 6 is a perspective explanatory view of the package unwrapping device, FIG. 7 is a plan view of the package unwrapping device, FIG. 8 is a front view of the package unwrapping device, and FIG. 9 is a front view of the snake gripper device, No. 10
11 is a front view of the cutter device, FIG. 12 is a plan view of the cutter device, FIG. 13 is a front view of the feed roll device, and FIG. 14 is a front view of the feed roll device. FIG. 1... Packaging, 2... Packaging, 3... Snake tape, 4... Tier, 4a... Tier, 5... Pallet, 6... Cardboard pad, 7... Gum tape,
DESCRIPTION OF SYMBOLS 11... Packing body unwrapping device, 12... Snake gripper device, 13... Cutter device, 14... Feed roll device, 15... Vacuum slider device, 16... Snake clamp device, 21... Top Gritzper finger, 22...Lower gripper finger, 23...Pin, 24...Pneumatic cylinder, 25...Sliding frame, 26...Linear motion bearing,
27... Guide bar, 28... Pneumatic cylinder, 31
...Other sliding frames, 32...Direct bearings, 33
...Other guide bars, 34...Mounting brackets, 35...
Fixed frame, 36... Pneumatic cylinder, 41...
Frame, 42... Motor, 43... Rotating shaft, 4
4...Rotary blade, 45...Pneumatic cylinder, 51...
Snake roll, 52...Press roll, 53...
... Motor, 54 ... Pneumatic cylinder, 61 ... Frame, 62 ... Vacuum part, 71 ... Arm, 72 ... Holding plate, 73 ... Rotating shaft, 74 ...
Pinion, 75... Rack, 76... Air cylinder, 81... Pusher, 82... Guide bar, 9
1...other side end, 92...one side end, 93...cutting location.

Claims (1)

[Claims] 1. A package unwrapping device for unwrapping a package in which a plurality of packages are arranged side by side in the left-right direction, with a snake tape bent in a zigzag shape interposed therebetween, the package unwrapping device including the snake tape. a vacuum slider device capable of suctioning and displacing one end of both sides of the cut portion of the snake tape; a snake gripper device that can be lifted; a cutter device that is movable in the front-rear direction and capable of cutting the snake tape; and a cutter device that is displaceable in the front-back direction and capable of cutting the snake tape; a feed roll device having a pair of rolls that are separable and that can cooperate to feed the snake tape;
a snake clamp device that is located near the other end in the left-right direction of the package and restrains the one end of the snake tape; The package unwrapping device is characterized in that the device is capable of moving toward and away from the snake gripper device by relatively displacing the snake gripper device between a position where the snake gripper device is opened and a remote position through which at least a portion of the snake gripper device can pass.