JP3510456B2 - Unloading box unloading device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for taking out a folded box. For example, it is applied in the case where the boxes stacked in the case magazine are taken out one by one in a boxing machine.

[0002]

2. Description of the Related Art Generally, a conventional box packing machine takes out, as shown in FIG. 7, boxes 31 which are folded flat and stacked in a case magazine 30 one by one, and discharges them to a bucket 38 of a conveyer 39. Products are supplied separately and packed in boxes, then packaged and shipped. In this box packing machine, a box take-out device is used when taking out the boxes 31 folded and stacked in the case magazine 30 one by one.

In this box take-out device, a shaft 36 of a planetary gear 33 which meshes with an internal gear 32 and a drive shaft 35 are connected to an arm 3.
4 and the suction cup 37 is attached to the outer peripheral position of the planetary gear 33.
For example, when the arm 34 is revolved in the counterclockwise direction indicated by the arrow in the figure via 5, the planetary gear 33 rotates about the shaft 36 in the clockwise direction indicated by the arrow in the figure.

For example, if the diameter of the internal gear 32 is 3D,
The diameter of the planetary gear 33 is D, and the transmission ratio between both gears is 3:
When set to 1, the planetary gear 33 makes two revolutions around the shaft 36 while the arm 34 makes one revolution around the drive shaft 35. At this time, one point (suction cup 37
(The mounting position of) rotates by drawing a locus a indicated by a two-dot chain line,
It will be contacted three times every 120 °.

In this box take-out device, the case magazine 30 is placed at the position I where the suction cup 37 provided at the outer periphery of the planetary gear 33 contacts the internal gear 32, and the position II.
Each of the conveyors 39 is arranged in the same position, and the folded box 31 is adsorbed by the suction cup 37 at the position I, taken out from the case magazine 30, and transferred inward as shown in FIG. , At position II, it is discharged into the bucket 38 of the conveyor 39 and conveyed to the next process.

In the conventional box take-out device as described above,
There was a case where the box 31 taken out from the case magazine 30 was conveyed from the folded flat state to the position II without being sufficiently opened.

[0007]

As described above, the boxes 31 folded and stacked in the case magazine 30 are provided.
However, when suction suction is performed by the suction cup 37 and the removal processing is performed, it should be opened from the folded flat state to a state close to a box shape and transported to the position II along the locus a.

However, there are cases where the box 31 is transported to the position II without being opened sufficiently due to the suction force of the suction cup 37 or the timing of removal, and in this state, the box 31 of the transport conveyor 39. There was a problem that the bucket 38 was not successfully entered. Therefore, the transport conveyor 39 is sent while the box 31 is missing in the bucket 38, and there is a problem that the work of the next process cannot be continued.

SUMMARY OF THE INVENTION It is an object of the present invention to solve these problems and to provide a box take-out device which can surely form folded and stacked boxes into a substantially box shape.

[0010]

A device for taking out a folded box according to claim 1 of the present invention, which achieves the above object, comprises:
It was fixed in a box take-out device equipped with an adsorbing station that adsorbs the boxes that have been folded and stacked from inside the case magazine and takes them out one by one, and a transfer station that forms and takes out the taken-out boxes into a box shape. One or a plurality of first planetary gears are provided for the first sun gear, and the first sun gear and the first planetary gears are meshed with each other via a first intermediate gear, Forming a first planetary gear mechanism having a transmission ratio of 3: 1 between the sun gear and the first planetary gear, and one for a second sun gear fixed coaxially with the first sun gear. Or a plurality of second planetary gears, the second sun gear and the second planetary gear are meshed via a second intermediate gear, and the second sun gear and the second planetary gear Forming a second planetary gear mechanism with a gear transmission ratio of 2: 1 or 4: 1 A rotating arm for rotating the rotary shafts of the first and second planetary gears around the first and second sun gears, and a flange fixed to the rotary shafts of the first planetary gears, A standing lever that raises a box, which is attached to a cam shaft that is rotatably supported by the flange and is foldable, in a rectangular shape, and a box that is attached and folded to the other end side of the rotating shaft of the first planetary gear. A suction cup that absorbs
The second planetary gear rotatably attached to the rotary shaft, and a cam attached to the other end of the cam shaft that engages with a cam groove that rotates integrally with the second planetary gear. It is characterized in that the box is erected in a rectangular shape by swinging the erection lever by the operation of the cam due to the rotation difference between the planetary gear and the second planetary gear.

According to a second aspect of the present invention which achieves the above object, the folded box take-out device according to the first aspect is the box picked up by suction in the middle of the suction station and the transfer station. Is provided on the side opposite to the suction surface.

[Operation] According to the folded box take-out device of the present invention, in the adsorption station, the folded and stacked boxes are adsorbed and taken out one by one from the case magazine, and taken out while being conveyed. The side of the box is pressed by an erecting lever to erect in a rectangular shape, sent to a transfer station, formed into a box shape, and conveyed to the next step.

First, when the rotating arm is driven to operate the first and second planetary gears, the first and second planetary gears are moved to the first and second intermediate gears via the first and second intermediate gears. It revolves around the sun gear 2 while rotating. Due to this rotation, the flange fixed to the rotation shaft of the first planetary gear and the suction cup also rotate about the same axis, and at the same time, the cam engaged with the cam groove that rotates integrally with the second planetary gear is the cam. When sliding along the groove, the movement of the cam causes the cam shaft to rotate and the standing lever to swing.

In contrast to the revolution that makes one revolution around the first sun gear and the second sun gear, the rotation speeds of the first planetary gear and the second planetary gear are 3: 2 or 3: 4, respectively. Since the transmission ratio is set so that the rotation difference becomes one rotation, the standing lever is swung by increasing or decreasing by one rotation with respect to the rotation of the suction cup. By pressing the side surface side of the box taken out from the suction station and folded by this raising lever, the flat box is conveyed to the conveyance station while standing up in a box shape.

Further, when a suction means for opening the box picked up by suction is provided in the middle of the suction station and the transfer station, a box body such as a cube that is difficult to stand up or a pressing force for standing up is applied. Even a large box can be reliably pulled and opened by the suction means from the opposite side of the box sucked by the suction cup.

[0016]

DETAILED DESCRIPTION OF THE INVENTION

[Embodiment 1] FIGS. 1 to 5 show a device for taking out a folded box according to a first embodiment of the present invention. 1 is a partial cross-sectional front view of the box take-out device, FIG. 2 is an enlarged view of the cam portion of FIG. 1,
3 is an explanatory view of the box take-out device, FIG. 4 is a partially enlarged view of FIG. 3, and FIG. 5 is an explanatory view of a sun gear, an intermediate gear, and a planetary gear.

In the folded box take-out device according to the present embodiment, the boxes 31 that are flatly folded and stacked in the case magazine 30 are taken out one by one, formed into a box shape during transportation, and supplied separately. The box 3 which forms a part of a boxing machine for packaging the products to be boxed, and packaging and shipping them, and which is folded and stacked in the case magazine 30.
It is used, for example, when picking up one by one and carrying it to the carrying conveyor 39.

That is, as shown in FIGS. 1 and 2, 1 is a drive shaft that pivotally mounts a rotating arm 5 and revolves planetary gears A3 and B3, and 2 is a shaft that is rotatably mounted on a drive shaft 1 via a bearing. The support member is fixed to the frame 3 with bolts 4 so as not to rotate along with the drive shaft 1, and the sun gears A1 and B1 are tightly fitted to the outer diameter side. Intermediate gears A2 and B2 are meshed with the fixed sun gears A1 and B1, and planetary gears A3 and B3 are meshed with the intermediate gears A2 and B2 to form a planetary gear mechanism.

The transmission ratio between the sun gear A1 and the planetary gear A3 is set to 3: 1, and the sun gear B1 and the planetary gear B3 are set.
Is set to 2: 1 (or 4: 1). As shown in FIG. 5, the planetary gear mechanism has two sets of an intermediate gear A2 and a planetary gear A for one fixed sun gear A1.
3 is meshed and the diameter of the sun gear A1 is 3D, the diameter of the planetary gear A3 is set to D.

If two sun gears B2 and a planetary gear B3 are meshed with one fixed sun gear B1 and the diameter of the sun gear B1 is 2d, the diameter of the planetary gear B3 is set to d. ing. As shown in FIGS. 1 and 2, the planetary gear A3 is firmly fitted to one end of the rotary shaft 9, and the suction cup 12 is attached to the other end of the rotary shaft 9 via a pipe 11. The suction cup 12 is provided with an air suction port, and is connected to a vacuum means (not shown) through the tube 11 and the inner hole of the rotary shaft 9. The planetary gear B3 is rotatably attached to the rotating shaft 9 via a bearing.

Reference numeral 6 has a cam groove 7 on its side surface, and a planetary gear B3
A cam disk fixed to the rotary shaft 9 and rotatably mounted on the rotary shaft 9 via a bearing.
Are rotatably mounted via bearings. Reference numeral 8 is a flange fixedly fitted to the rotary shaft 9, 13 is a cam shaft rotatably attached to the flange 8 via a bearing, and a cam 18 is loosened at one end side via a lever 16 with a bolt 17. The cam 18 is fitted and supported, and the cam 18 is engaged with the cam groove 7.

At the other end of the cam shaft 13, a pair of "doglegged" standing levers 15 are fixed to a lever support member 14 via a connecting member 10. Further, in the above description, the case where the planetary gears A3 and B3 are two sets above and below the fixed sun gears A1 and B1 has been described.
It is also possible to provide 3 and B3.

With the take-out device for the folded boxes constructed as described above, as shown in FIG. 3, at the position I of the suction station, the boxes 31 folded and stacked from inside the case magazine 30 are sucked. Take out one by one,
Standing lever 15 while transporting the flat box 31 taken out.
Is erected in a rectangular shape and is transported to the position II of the transport station, is fed into the bucket 38 of the transport conveyor 39, and is transported to the next process.

For example, when the rotary arm 5 is rotated counterclockwise around the drive shaft 1, the planetary gears A3 and B3 are rotated.
While revolving around No. to the right, it revolves to the left. By this rotation, the flange 8 fixed to the rotation shaft 9 of the planetary gear A3 and the suction cup 12 also rotate about the same axis,
At the same time, when the cam 18 engaged with the cam groove 7 of the cam disk 6 that rotates integrally with the planetary gear B3 slides along the cam groove 7, the movement of the cam 18 causes the cam shaft 13 to rotate and the standing lever. 15 rocks.

In contrast to the revolution that makes one revolution around the sun gears A1 and B1, the rotation speed of the planetary gears A3 and B3 is 3: 2 (or 3: 4) from the above transmission ratio, and the difference in rotation is one revolution. Since the transmission ratio is set so that the rotation of the suction cup 12 is increased or decreased by one rotation, the standing lever 15 is swung. This standing lever 1
5 is transferred to position II of the transfer station while standing up the flat box in a rectangular shape by pressing the side surface side of box 31 that is taken out from position I of the suction station and folded.

FIG. 4 shows a state in which the box 31, which is erected in a rectangular shape while being pressed by the erection lever 15, is fed into the bucket 38 of the conveyor 39. In this way, the flat box 3 taken out from the case magazine 30
By pressing 1 with the erecting lever 15, even if the flat box is slightly incompletely opened, it can be forcibly raised and opened to a predetermined box state.

[Second Embodiment] FIG. 6 shows a second embodiment of the present invention. In this embodiment, in contrast to the first embodiment shown in FIGS. 1 to 5, suction means 20 is provided in the middle of the suction station and the transfer station to further open the box picked up by suction. Therefore, as shown in FIG. 6, the suction station is moved to the position III, the suction means 20 is installed at the position I, and the transfer station similar to that of the first embodiment is arranged at the position II.

The suction means 20 arranged at the position I has a position
It is located on the opposite side of the suction surface with respect to the flat box 31 suctioned and taken out by the suction cup 12 from the suction station III. Other configurations are the same as those in FIGS. 1 to 5 of the above-described first embodiment, the same parts are denoted by the same reference numerals, and overlapping description will be omitted.

As shown in FIG. 6, at the suction station position III, the folded box stacking apparatus according to the present embodiment configured as described above is folded and stacked from inside the case magazine 30. 31 is picked up and taken out one by one, and the flat box 31 sucked by the suction cup 12 is sent to the next position I as shown by a two-dot chain line. Then, at the position I, the flat box 31 sucked by the suction cup 12 is surely sucked by the suction means 20 on the opposite side, and is opened into a rectangular shape from the flat state.

After being opened in a rectangular shape, the suction means 20 is separated, and while the suction cup 12 continues to rotate, it is reliably raised by the raising lever 15 and sent to the position II of the transfer station, and inside the bucket 38 of the transfer conveyor 39. Sent to the next process.

As described above, since the suction means 20 for further opening the box picked up by suction is provided in the middle of the suction station and the transfer station, a box body such as a cube which is difficult to stand up or a pusher which stands up. Even a box with a large pressure can be reliably pulled and opened by the suction means.

[0032]

As described above in detail, the apparatus for taking out the folded boxes according to the first aspect of the present invention sucks the boxes that are folded and stacked from the case magazine and sucks them one by one. A box take-out device comprising a station and a carrying station for carrying the box taken out into a box shape, the box taking-out apparatus having one fixed first sun gear.
A first planetary gear or a plurality of first planetary gears, wherein the first sun gear and the first planetary gear are meshed with each other via a first intermediate gear, and the first sun gear and the first planetary gear are Transmission ratio is 3: 1
Forming a first planetary gear mechanism having one or a plurality of second planetary gears with respect to a second sun gear fixed coaxially with the first sun gear. The sun gear and the second planetary gear are meshed with each other via the second intermediate gear,
The transmission ratio between the sun gear and the second planetary gear is 2: 1 or 4:
A second planetary gear mechanism of No. 1 and a rotating arm that rotates the rotation shafts of the first planetary gear and the second planetary gear around the first sun gear and the second sun gear. A flange fixed to the rotation shaft of the first planetary gear, and a erection lever for erecting a folded box attached to a cam shaft rotatably supported by the flange in a rectangular shape; A suction cup attached to the other end of the rotation shaft of the planetary gear to adsorb a folded box, and a cam groove that rotates integrally with a second planetary gear rotatably attached to the rotation shaft. And a cam attached to the other end of the cam shaft,
Since the cam is actuated by the rotation difference between the first planetary gear and the second planetary gear to oscillate the erection lever to erect the box in a rectangular shape, the flat box taken out from the case magazine is erected. By pressing with, there is an effect that even if the opening is somewhat insufficient, it can be forcibly erected and opened to a predetermined box-shaped state.

According to a second aspect of the present invention, in the apparatus for taking out a folded box according to the first aspect, the box picked up by suction is further opened in the middle of the suction station and the transfer station. Since the suction means is provided on the opposite side of the suction surface, it is possible to securely pull and open the box in advance by the suction means even for a box body such as a cube that is difficult to stand up or a box body with a large pressing force to stand up. There is an effect that can be. As described above, since the flat box taken out from the case magazine is surely erected, the mistake of feeding the conveyer into the bucket is eliminated and the reliability of the conveying work to the next process is improved.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional front view of a device for taking out a folded box according to a first embodiment of the present invention.

FIG. 2 is an enlarged view of a cam portion of FIG.

FIG. 3 is an explanatory diagram of a box takeout device.

FIG. 4 is a partially enlarged view of FIG.

FIG. 5 is an explanatory diagram of a sun gear, an intermediate gear, and a planetary gear.

FIG. 6 is an explanatory diagram of a box takeout device according to a second embodiment of the present invention.

FIG. 7 is an explanatory view of a conventional box take-out device.

[Explanation of symbols]

Position I, II, III A1, B1 sun gear A2, B2 Intermediate gear A3, B3 planetary gears 1 drive shaft 5 rotating arm 6 cam disc 7 Cam groove 8 flange 9 rotation axis 12 suction cups 13 Cam shaft 15 Standing lever 18 cams 20 Suction means 30 case magazine 31 folded box 38 buckets 39 Conveyor

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-3-200518 (JP, A) JP-A-56-4524 (JP, A) JP-A-2-202440 (JP, A) JP-A 63- 203523 (JP, A) JP 63-162436 (JP, A) Actual development 62-102523 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B65B 43/00

Claims (2)

(57) [Claims] 1. A box take-out device provided with an adsorbing station for adsorbing boxes that are folded and stacked from inside a case magazine and taking out the boxes one by one, and a carrying station for forming and carrying the taken-out boxes into a box shape. In one, there is one or a plurality of first planetary gears with respect to the fixed first sun gear, and the first sun gear and the first planetary gear mesh with each other via a first intermediate gear. A second sun fixed on the same axis as the first sun gear to form a first planetary gear mechanism having a transmission ratio of 3: 1 between the first sun gear and the first planetary gear. One or a plurality of second planetary gears are provided for the gears, the second sun gear and the second planetary gears are meshed with each other via a second intermediate gear, and the second sun gear is A second planetary gear, wherein the transmission ratio of the second planetary gear is 2: 1 or 4: 1. A rotation arm that forms a mechanism and rotates the rotation shafts related to the first and second planetary gears around the first and second sun gears, and is fixed to the rotation shafts of the first planetary gears. And a standing lever that raises a box, which is mounted on a cam shaft rotatably supported by the flange and folds into a rectangular shape, and is mounted on the other end side of the rotating shaft of the first planetary gear. And a suction cup for adsorbing the folded box and a cam groove that rotates integrally with the second planetary gear that is rotatably attached to the rotation shaft, and is attached to the other end side of the cam shaft. And a cam attached to the box, and the cam is actuated by the rotation difference between the first planetary gear and the second planetary gear to swing the erection lever to erect the box in a rectangular shape. Device for picked up boxes. 2. The suction means for opening the box, which has been sucked and taken out, between the suction station and the transfer station on the side opposite to the suction surface. A device for taking out folded boxes.