JPH09315412A - Device for taking out box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily take out a large folded box even by a small device by providing a slider which is driven by a specific planetary shaft through a crank and moved along a slide shaft projected on a drive shaft with a base end freely fitted and a specific vacuum cup on the slider. SOLUTION: When a drive shaft 1 is driven and an arm 7 is revolved, a planetary shaft 8 on the arm 7 is rotated while it is revolved to rotate a crank 9, a slide shaft 11 is turned around the drive shaft 1 by the prescribed range through a crank pin 10, and at the same time, a slider 12 to be engaged with the crank pin 10 is reciprocated on the slide shaft 11. A vacuum cup 20 on a supporting rod 15 projected from the slider 12 is moved along the moving locus while being revolved outside, and a folded box sucked by the vacuum cup 20 is similarly carried while being revolved outside. A box taking-out device need not be increased in size to secure the moving space of the folded box.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box packing machine which is constructed by folding and stacking boxes in a case magazine.
The present invention relates to a box take-out device that is applied when taking out sheets one by one.

[0002]

2. Description of the Related Art FIG. 4 is an explanatory view of a conventional box take-out device used when taking out the boxes that are folded and stacked in a case magazine one by one in a box packing machine. In the figure, generally, a boxing machine folds flatly and takes out the boxes stacked in a case magazine one by one, forms them in a box during transportation and packs the products to be supplied separately, and then packages and ships them. . The take-out device for this box comprises a shaft 56 of a planetary gear 52 meshing with an internal gear 51 and a drive shaft 55.
Are connected by an arm 53, and a vacuum cup 54 is attached to the outer peripheral position of the planetary gear 52. When the arm 53 is revolved counterclockwise, for example, through a drive shaft 55, the planetary gear 52 is rotated. It is designed to rotate clockwise around 56.

For example, the diameter of the internal gear 52 is 3D,
Assuming that the diameter of the planetary gear 52 is D, the planetary gear 52 makes three revolutions around the shaft 56 while the arm 53 makes one revolution around the drive shaft 55. At this time, one point on the outer periphery of the planetary gear 52 is 2 A locus a indicated by a dotted chain line is drawn and rotated. In this box take-out device, a position A where a vacuum cup 54 provided at a position on the outer periphery of the planetary gear 52 contacts the internal gear 51
The case magazine 30 is disposed in the position B, and the transport conveyor 56 is disposed in the position B. The folded box 50 is attracted to the vacuum cup 54 at the position A and the case magazine 30 is disposed.
Then, after being transferred along the trajectory a, it is discharged into the bucket 56a of the transfer conveyor 56 at the position B and transferred to the next process.

[0004]

In the conventional box take-out device as described above, for example, when the arm 53 revolves counterclockwise, the planetary gear 52 rotates clockwise clockwise. When the folded box 50 is sucked up by the vacuum cup 54 and taken out, and is transferred along the trajectory a, the vacuum cup 54 may be removed at a position on the way.
Moves while moving inwardly, so that the folded box 50 moves inside the locus a. Therefore, in order to secure a space in which the large folded box 50 can move without any hindrance, it is necessary to increase the size of the box take-out device, resulting in an increase in installation cost.

[0005]

A box take-out device according to the present invention is intended to solve the above-mentioned problems, and is mounted on the tip of a rotating arm protruding from a drive shaft and driven by the drive shaft via a chain. A folded box in a case magazine in which a vacuum cup is attached to a slider that is driven by a rotating planetary shaft through a crank and moves along a slide shaft that is mounted by projecting the base end of the planetary shaft. Is picked up and taken out and conveyed. Driven by the drive shaft, the arm revolves and the planetary shaft at the end of the arm also revolves while being driven by the drive shaft to rotate, causing the crank to rotate, and the rotation of the crank causes the slide shaft to move around the drive shaft within a predetermined range. And the slider reciprocates along the slide shaft. Such a movement of the slider causes the vacuum cup attached to the slider to move outward while changing its direction, so that the folded box that is adsorbed by the vacuum cup and taken out from the case magazine also faces outward. It is transported while changing.

[0006]

1 to 3 are explanatory views of a box take-out device according to an embodiment of the present invention. In the figure, the box take-out device according to the present embodiment is used for taking out, for example, one by one the boxes stacked and folded in the case magazine in the cartoning machine, and the cartoning machine is flatly folded. The boxes stacked in the case magazine are taken out one by one, formed into a box during transportation, and the products to be supplied separately are packed into a box and then packaged and shipped.
As shown in FIG. 1, this box take-out device includes a drive shaft 1 supported by a mount 2 via bearings 3, and a large-diameter sprocket 4 loosely fitted to the drive shaft 1 and fixed in position on the mount 2. , A small diameter sprocket 5 connected to the large diameter sprocket 4 via a chain 6, an arm 7 having a base end fixed to the drive shaft 1, and a loose fitting to the tip of the arm 7, and the small diameter sprocket 5 tightly fitted. A planetary structure including a planetary shaft 8 and a crank 9 having a base end fixed to the planetary shaft 8 and a crank pin 10 at the tip, and a slide having a base end rotatably fitted to the drive shaft 1 via a bearing 14. A shaft 11; a slider 12 that is fitted to the slide shaft 11 so as to move up and down and is rotatably engaged with a crank pin 10 and a bearing 13;
It is composed of a vacuum cup 20 and the like attached to the support rod 15. The vacuum cup 20 is attached to the support rod 15 such that the position of the suction surface thereof coincides with the center position where the crank pin 10 and the slider 12 are engaged with each other.

In the take-out device for the bookcase, the diameter ratio of the small diameter sprocket 5 and the large diameter sprocket 4 is 1 :.
3, the radius of rotation of the crank 9, that is, the distance between the center of the planet shaft 8 and the center of the crank pin 10 is D / 2, and the center of the drive shaft 1 and the center of the crank pin 10 (center of engagement with the slider 12)
The maximum interval between and is set to 3D / 2. Further, two sets of take-out mechanisms including the vacuum cup 20 are arranged around the drive shaft 1 at intervals of 180 degrees.

When picking up the boxes folded and stacked in the case magazine one by one by the take-out device for the book case, first, the drive shaft 1 is driven by the driving means (not shown) to rotate (revolve) the arm 7. As a result, the small-diameter sprocket 5 mounted on the planetary shaft 8 revolves around the large-diameter sprocket 4 via the chain 6 while rotating at a speed three times as fast as the revolution speed. The crank 9 attached to 8 also rotates at the same speed. FIG. 2A shows the rotation characteristics of the arm 7 and the crank 9 at this time, and the crank is generated while the arm 7 rotates 1/3 (120 degrees) to the left around the drive shaft 1 in the figure. Reference numeral 9 indicates the tip of the crank 9 when it makes one rotation to the right (rotate 360 degrees) and is separated from the drive shaft 1 by a maximum distance of 3D / 2 (point A of the tip of the crank 9 on a virtual circle b drawn by the center of the crank pin 10 described later) ) Moves to point B.

That is, the crank pin 1 is attached to the tip of the crank 9.
0 is attached, and the crank pin 10 is rotatably engaged with a slider 12 movably fitted to a slide shaft 11. Therefore, when the crank 9 rotates around the planet shaft 8, the slide shaft 11 moves to the crank pin 10
And it rotates around the drive shaft 1 via the slider 12. FIG. 2B shows the movements of the slide shaft 11 and the slider 12 which are interlocked with the rotation of the crank 9 at this time. While the crank 9 makes one revolution around the planetary shaft 8, the slide shaft 11 becomes the drive shaft 1. Is rotated rightward and leftward by a predetermined range, and at the same time, the slider 12 reciprocates along the slide shaft 11 in the direction of the drive shaft 1 in conjunction with this movement.
Therefore, the vacuum cup 20 on the support rod 15 protruding from the slider 12 also reciprocates in parallel with the slide shaft 11.

FIG. 3 shows the movement of the vacuum cup 20 while the arm 7 rotates 1/3 around the drive shaft 1 to the left in the figure and the crank 9 rotates around the planetary shaft 8 once. The chain double-dashed line a indicates the crank pin 10 and the slider 1.
2 shows the center of engagement with 2, that is, the locus of the suction surface of the vacuum cup 20, and the vacuum cup 20 in the outward direction at the point A on the imaginary circle b follows the locus a along the slide axis 1
In conjunction with the movement of 1, the direction of the suction surface is gradually changed to the outer periphery and the movement is made to point B. Therefore, by installing the case magazine 30 at the position of point A and the transport conveyor 56 at the position of point B as shown in FIG.
At the point, the folded box 50 that is sucked by the vacuum cup 20 and taken out from the case magazine 30 is
After transferring to the point B while changing the direction to the outer periphery along the locus a, it can be discharged onto the transfer conveyor 50 and transferred to a predetermined place.

The planetary structure is not limited to the configuration of the box take-out device according to the present embodiment.
As long as the device has the same function, for example, a device using the internal gear and the planetary gear in FIG. 4 or another device may be used. Further, the number of take-out mechanisms including the vacuum cup 20 is not limited to two sets like the take-out device for the bookcase, and may be one set or a plurality of sets, for example.

In the conventional box take-out device, for example, when the arm revolves counterclockwise, the planetary gears rotate clockwise, so that when the folded box in the case magazine is adsorbed by the vacuum cup, it is taken out and transferred. , In the middle position, the vacuum cup moves inward, so that the folded box moves inside the trajectory of the vacuum cup. For this reason, it is necessary to increase the size of the box take-out device, especially when trying to secure a space in which a large folded box can be moved without any hindrance, which leads to an increase in installation cost. An arm 7 that is fixed to the shaft 1 and revolves; a planetary shaft 8 that rotates on the arm 7;
A planetary structure including a crank 9 fixed to the planetary shaft 8, a slide shaft 11 having a base end loosely fitted to the drive shaft 1 and vertically attached to the drive shaft 1, and a slide shaft 11 movably. It is composed of a slider 12 which is fitted and engaged with a crank pin 10 provided on a crank 9, and drives a drive shaft 1, and the slider 1 via the crank pin 10.
2 reciprocates on the slide shaft 11 and revolves around the drive shaft 1, and a support cup 15 is provided on the slider 12 to attach a vacuum cup 20 for adsorbing and ejecting a folded box 50. By aligning the position of the suction surface of the vacuum cup 20 attached to the support rod 15 with the center of engagement between the crank pin 10 and the slider 12, the drive shaft 1 is driven and the arm 7 revolves. The planetary shaft 8 on the arm 7 revolves around its own axis to rotate the crank 9, and the slide shaft 11 rotates about the drive shaft 1 through the crank pin 10 within a predetermined range and simultaneously engages with the crank pin 10. The slider 12 reciprocates on the slide shaft 11. As a result, the vacuum cup 20 on the support rod 15 projecting from the slider 12 moves along the movement track while making an outer periphery, and thus the folded box 50 adsorbed by the vacuum cup 20 also makes an outer periphery. While being transported. In this way, the folded box 50 in the case magazine 30 can be adsorbed by the vacuum cup 20 and transferred to a predetermined place while changing its direction to the outside, whereby the folded box 50 can be transferred. It is not necessary to upsize the box take-out device in order to secure the space for moving the box, and the small-sized apparatus can easily take out the large folded box 50. In addition, suction of the box 50 folded by aligning the positions of the suction surface of the vacuum cup 20 and the center of the crank pin 10 with respect to the drive shaft 1,
The removal is accurate and reliable.

[0013]

The box take-out device according to the present invention is constructed as described above, and the vacuum cup mounted on the slider moves outward while changing its direction to be attracted to the vacuum cup and then the case magazine. The folded box taken out from the inside is also transported while changing the direction to the outside, so it is not necessary to enlarge the box take-out device to secure the movement space of the folded box, and it is small. Even a device can easily take out a large folded box.

[Brief description of drawings]

FIG. 1 (a) is a front view of a box takeout device according to an embodiment of the present invention, and FIG. 1 (b) is a BB arrow view in FIG. 1 (a).

FIG. 2A and FIG. 2B are explanatory diagrams of the operation.

FIG. 3 is also an explanatory view of its operation.

FIG. 4 is an operation explanatory view of a conventional box take-out device.

[Explanation of symbols]

 1 Drive shaft 2 Frame 3 Bearing 4 Large diameter sprocket 5 Small diameter sprocket 6 Chain 7 Arm 8 Planetary shaft 9 Crank 10 Crankpin 11 Slide shaft 12 Slider 13 Bearing 14 Bearing 15 Support rod 20 Vacuum cup 30 Case magazine 50 Folded box 56 Transport conveyor

Claims (1)

[Claims] 1. A planetary shaft that is mounted on the tip of an arm that is provided so as to project from a drive shaft and that rotates by being driven by the drive shaft via a chain; and a planetary shaft that is driven by the planetary shaft via a crank and is attached to the drive shaft. A slider provided with a base end that moves along a protruding slide shaft, and a vacuum cup that is attached to the slider and that sucks a folded box in a case magazine to pick it up and convey it A box take-out device.