JPH02166035A - Unpacking apparatus for packed material - Google Patents

Abstract

PURPOSE:To positively cut a snake tape with a cutter without generating wrinkles on the cut part by picking up a point near the cut part of said snake tape with two parallel gripper fingers. CONSTITUTION:When a packed material 1 lifts to an unpackaging space, vacuum pads 62 descend, attract one side end 92 of the cut part 63 of a snake tape 3 on the top of the packed material 1, and lift again to pull up said side end 92 of the snake tape 3. Thereby a gap is made between packages 2 in the top layer of the packed material 1 and the snake tape 3 on the top. The other side end 91 of the cut part of the snake tape 3 is kept being picked up. The cut part 93 between the side ends 91 and 92 of the snake tape 3 is thus kept levitated from the packages 2 in the top layer 4a. A motor 42 and an air-pressure cylinder 45 are actuated and a rotary knife 44 moves forward while rotating to cut the snake tape 3 at the cut part 93.

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.

Some of the items to be packed are unpacked, some are packaged but not in use, and many items may be wrapped with the same packaging material to form a single package.

lI! When manufacturing i2i, the M cylinder is filled with contents, and then the IM is wrapped around the opening of the can cylinder to complete the process.

Such canned products are sent to subsequent processes such as retort processing as necessary.

52-1188.

[Prior art 1] A large number of can lids are stacked and packaged to form a cylindrical packaging body 2 (Fig. 3).
As shown in FIGS. 1 and 2, a required number of packages 1 are arranged in a line, and a required number of packages 1 are stacked in a zigzag shape, and a required number of stacked packages 1 are placed thereon.・Transfer part 5 to the part 1 lift position by the infeed conveyor, and then move it up to the position where the uppermost package 2 of the packages 1 on this pallet is sent to post-process equipment such as a seaming machine. When the snake tape 3 on the top surface is pulled up by the suction device, a gap is formed between the top package 2 and the snake tape 3! Cut the snake tape with a cutter and unwrap package 1,
The package 2 released from the snake tape 3 is pushed out to the next step by a pusher V-.

[Problem to be solved by the invention] However, in the conventional unpacking device configured in this way, it is difficult to ensure that the snake tape 3 is cut by the cutter. In order to do this, it is necessary to be able to reliably lift and hold the cut portion of the snake tape 3 on the I suction device, but with the conventional suction device method, it is not always possible to lift and hold the snake tape 3 reliably. The snake tape tends to wrinkle at the suction area, and therefore the cutter may not be able to cut it completely. In addition, in the snake tape after cutting, since the left and right sides of the cut point are playing without being restrained, the part marked M/υ is pulled to the push V-, and the snake tape 3 is pulled and the inquiry is made. There were times when it was disturbed.

This invention was made in view of the above circumstances, and it is possible to reliably pull up and hold the snake tape when cutting the snake tape when unwrapping the package.
Therefore, the cutter can reliably cut the snake tape without wrinkles at the cut point, and it also ensures that both sides of the snake tape are treated properly, ensuring that the package can be put out immediately in the subsequent process. The purpose of the present invention is to provide a device for unwrapping a package that can be used to unpack a package.

[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 disassembly SI device for MLing 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 point of the snake tape, and a vacuum slider device movable in the front-rear direction and left-right direction and pinching the vicinity of the opposite end of the cut point of the snake tape. a snake gripper device that lifts the snake tape, and a cutter device that is movable in the backward direction and capable of cutting the snake tape;
A feed roll device 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 working together to feed the snake tape by 1q. and a snake clamp device that is located near the other end in the left and 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 position one space away from the snake gripper device through which at least a portion of the snake gripper device can pass.

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

When the package is lifted into the unwrapping space, a vacuum slider device attracts and pulls up the topmost snake tape, a snake gripper grips the snake tape, and a 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 the snake tape at a speed of nip/v and discharges the snake tape. The package exposed at the top is pushed out to the next step by a pusher 17-.

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 a raised state and push out the package with the pusher V-.

In the case of extrusion of the third stage package, the snake tape is discharged 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, j3 indicates a package 1, in which a large number of packages 2 are packed using a Snake Chee/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.

As a whole, the packages 2 of this sharpened package 1 are arranged in a staggered arrangement. Between each tier 4 of the packages 2, there is a snake tape 3 that snakes in the shape of a jig 1 to bind the packages 2. are doing.

A step pole bat 6 is placed on top of the pallet 5,
The lower end of the snake tape 3 is folded under the corrugated pole batt 6, as shown in FIG. In addition, the upper end of the snake tape 3 is sealed with packing tape 7 as shown in Figure 4.
It is fastened to a snake tape 3 that covers the packaging body 2 at the bottom of the stage.

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 0t11 is a snake gripper device! 12 and cutter mount @ 13 and feed roll mount r1114 and vacuum slider @! 15 and a snake clamp device 16.

The snake gripper device 12 serves to pick up the cut portion of the snake tape 3 and remove the cut end from above the step 4 of the package 1 by cutting the snake tape.

As shown in FIGS. 9 and 10, the snake gripper device 12 includes an upper gripper finger 21 and a lower gripper finger 22 in the form of a long rod. The lower gripper finger 22 is rotationally displaceable with respect to the bin 23;
The upper gripper 2 is driven by a pneumatic cylinder 24.
1 and a mouth for holding the snake tape 3 is formed. 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. along the guide bar 27 located at l! ! ! fh is possible. In this way, the upper gripper fingers 21 and the lower gripper fingers 22 can move back and forth along the guide bar 27 in the front-rear direction, that is, in the 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 vibration frame 31 is suspended from another guide bar 33 by a linear bearing 32. Other guide bar 33
is attached to a 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 rotary blade 44 attached to a rotating shaft 43 of the motor 42. The frame 41 is attached to a piston of a pneumatic cylinder 45, and is movable in the front-back direction by the operation of the pneumatic cylinder 45. Therefore, the cutter device W13 cuts the snake tape 3 by crossing the snake tape 3 while the rotary blade 44 rotates.

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 rotating shaft in the forward printing direction, and can be rotated by the operation of the motor 53 to feed the snake tape 3.

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

When the press roll 52 rises and comes into contact with the snake tape 3, both of them work together to cut the snake tape 3.
Pinch and feed the snake tape 3 to the packing body 1.
Eliminate from above.

On the other hand, the press roll 52 descends and the snake roll 51
If a gap occurs between the two rolls, the upper gripper fingers 21 and lower gripper fingers 22 of the snake gripper device N1 pass through the gap between both rolls while gripping the snake tape 3, as will be described later. It is possible.

The vacuum slider device 15 includes a frame 61 and two vacuum butts 62 facing downward. Due to the movement of the frame 61, the vacuum pad 62 cuts the snake tape at a position opposite to the upper and lower gripper fingers 21, 22 of the snake gripper device 12 across the cutting position of the snake tape 3 to be traversed by the cutter device in the left-right direction. Adsorption position to adsorb 3 (position shown by virtual line)
to a retracted position (position shown by a solid line) in which the retracted position is retracted above the end of the package 1. Movement of frame 61 is controlled by pneumatic cylinders (not shown).

The snake clamp device 16 has a pair of arms 71 and a holding 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 IN state shown by the imaginary line, it does not interfere with the snake tape 3, but when it is in the IN state shown by the solid line, the plate 72 holds down the cut end of the snake tape 3 in the upright state.
We work together to hold it down. A binion 74 is attached to the rotating shaft 73, the binion 74 is driven by a rack 75, and the rack 75 is driven by an air cylinder 76.

A pusher 81 is located in the direction of the package unwrapping position.

The butcher 81 has a rod shape provided in the left-right direction, and is movable in six directions via a guide bar 82 by the operation of a pneumatic cylinder (not shown), and the uppermost part of the package that is successively moved upward by a lift. The first stage that has reached the top is pushed forward to be sent to the next process.

In the package unwrapping device 11 configured in this way,
Unpack as follows! jiff? I do.

When the package 1 rises into the unwrapping space, the vacuum pad 62 descends and adsorbs one end 92 of the cut point 63 of the snake tape 3 at the top of the package 1, and the vacuum butt 62 rises again. One end 92 of the snake tape 3
pull up. As a result, am is created between the uppermost package 2 of the package 1 and the uppermost snake tape 3.

Next is Snake Gripper-1Li! The upper gripper finger 21 and the lower gripper finger 22 of 12 are moved forward by the actuation of the pneumatic cylinder 28, so that the barbed ripper finger 21 reaches above the snake tape 3, and the lower gripper finger 22 moves between the snake tape 3 and the package 2. It is inserted into the gap between it and the top stage 4a. Then, the lower gripper finger 22 is raised by the actuation 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 cooperate to remove the snake tape. The other end 91 of the cut point 3 is held in a pinched state.

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

Next, the motor 42 is activated, and the pneumatic cylinder 45 is activated, so that the rotary blade 44 rotates and moves forward to cut the snake tape 3 at the cutting point 93.

When the snake tape 3 is finished cutting, the rotary blade 44:b
and retract to the retracted position.

At this time, the other ends 91 on both sides of the cut point 93 of the snake tape 3 are held by the upper and lower gripper fingers 21 and 22, and the one end 92 is in a state where it is attracted to the vacuum pad 62. is retained.

Next, the vacuum pad 62 retreats above the end of the unwrapping space, so that one end 92 of the snake tape 3 stands up in front of the holding plate 72. Next arm 7
1 closes, one end 92 of the snake tape 3 is sandwiched between the holding plate 72 and the arm 71, and then the suction of the vacuum rose 62 is released.

On the other hand, the upper and lower gripper fingers 21 and 221 move 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 descending, and the snake roll 51 and press roll 52 are lowered.
Since the space between the two rolls 51, 52 is open, the upper and lower gripper fingers 21, 22 pass between the two rolls 51, 52. After this passage, the press roll 52 rises and contacts the snake [1-ru] 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 present on the top surface of the package 1, so the bushing 81 moves forward and the package 2 on the top stage 4a of the package 1 is sent out to the next process.

When sending out the package 2 of the next stage 4b, first
rises by one stage into the unpacking space, and then the vacuum butt 62 attracts the snake tape 3 and rises. At this time,
At the same time, the press roll 52 descends to release the snake tape 3, so that the movement of the vacuum rose I/62 upward while adsorbing the snake tape 3 is not hindered. Vacuum bat 62 that has risen after adsorbing snake tape 3
moves back above the end of the unpacking space while holding the snake jaw 73 by suction, and the arm 71 of 16 operates on the snake clamp device to hold down the snake tape 3, and the vacuum butt 62 releases the snake tape 3. do.

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 upper surface of the second-stage package 2 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 push*y
-81 operates again to send the package 2 to the next process.

The snake clamp device 16 then 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, if the snake tape 3 is continued to be discharged by the feed roll device 14 as shown in step 2, the snake tape 3 on the package 2 of the third stage 4C will disappear. In this state, the package 2 is sent out again by the pusher 81.

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 the present invention, the snake tape is picked up near the cut point 11i with two parallel gripper fingers, so that wrinkles do not occur at the cut point of the snake tape, and the cutter can easily cut the snake tape. This can be done reliably, and the package can be easily and reliably sent to the next process.

Furthermore, it is quite difficult to pick up the snake tape by vacuum suction and pinch it between the spikes and the snake feed roll, but in this invention, the snake tape is gripped by a rod-shaped gripper and then pressed between the snake roll and the snake feed roll. Since the snake tape is passed between the rolls, it is certain 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. Fig. 6 is an explanatory diagram of the upper end of the tape;
8 is a front view of the package unwrapping device, FIG. 9 is a front view of the snake gripper device, FIG. 10 is a side view of the snake gripper device, and FIG. 11
The figure is a front view of the cutter v device, FIG. 12 is a plan view of the cutter device, FIG. 13 is a front view of the feed roll device, and FIG.
The figure is a plan view of the feed roll device. 1... Packaging body, 2... Packaging body, 3... Snake tape, 4... Tier, 4a...
Tier, 5... Pallet, 6... Tier pole bat, 7
... Packing tape, 11 ... Packing body unwrapping device, 12
... Snake gripper device, 13... Cutter device, 14... Feed roll device,
15... Vacuum slider device 116... Snake clamp device, 21... Upper gripper finger 22... Lower gripper finger 23... Bin, 24... Pneumatic cylinder, 25...
・Sliding frame, 26...Linear motion bearing, 27...Guide bar 28...Pneumatic cylinder, 31...Other sliding frame, 32...Linear motion bearing, 33...Others Guide bar 34... Mounting bracket, 35... Fixed frame, 36... Pneumatic cylinder, 41... Frame,
42...Motor, 43...Rotating shaft, 44...
Rotating blade, 45... Pneumatic cylinder, 51... Snake roller, 52... Press roll, 53... Motor, 54... Pneumatic cylinder, 61... Frame,
62...Vacuum butt, 71...Arm, 7
2... Holding plate, 73... Rotating shaft, 74... Binion, 75... Rack, 76... Air cylinder,
81... Pusher 82... Guide bar 91.
...Other side end, 92...One side end, 93... Cutting point Figure 3 Figure Figure Figure

Claims (1)

[Claims] A package unpacking device for unwrapping a package in which a plurality of package stages formed by arranging a plurality of packages in the left-right direction are packed with a snake tape bent in a zigzag shape interposed therebetween,
A vacuum slider device capable of adsorbing and displacing one end of both sides of the cut point of the snake tape, and a vacuum slider device movable in the front-rear direction and left-right direction and pinching the vicinity of the other end of the cut point of the snake tape. a snake gripper device that can be moved and lifted up; a cutter device that is movable in the front-back 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 feeding roll device having a pair of rolls that are separable and capable of feeding the snake tape in cooperation with each other; a snake clamp device for restraining side edges, and the pair of rolls in the feed roll device are arranged between a close position where the snake tape is sandwiched and a spaced position through which at least a portion of the snake gripper device can pass. A package unwrapping device characterized in that the package unwrapping device is capable of moving toward and away from the package by relative displacement.