JP2005271970A - Carton extraction feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a high speed carton extraction feeder by securely and steadily performing the operation of extracting cartons 50 from a carton magazine M and supplying formed cartons 50 to a conveying device 9, the carton extraction feeder being designed such that the cartons 50 stored in the carton magazine M are successively extracted by suction heads 30 pressing the cartons 50 in the direction in which the cartons 50 are stacked, each carton extracted is unfolded and formed into a box, and the box formed is supplied to the conveying device 9. <P>SOLUTION: The carton extraction feeder includes: a rotation transmitting means which rotates a drive shaft 1 such that a planetary shaft 2 freely rotatably attached to an arm 10 rotates around its axis, a crank 5 by which a sucking body 3 having the suction heads 30 for sucking the cartons 50 is held so as to freely rotate, and a slide means for keeping the suction body 3 outward. When a formed carton is supplied to the conveying device 9, the transmission of the rotation of the drive shaft 1 to the planetary shaft 2 is temporarily stopped by a correcting means 4. Thereby, the locus of each of the suction heads 30 is corrected so as to be circular. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention sequentially takes out flat folded cartons accommodated in a carton magazine by a suction head pressed in the overlapping direction, opens them during conveyance, forms them into a box, and performs subsequent conveyance. The present invention relates to a carton take-out and supply device to be supplied to the device.

As a carton take-out and supply device that takes out the cartons stored in a folded state one by one, opens them and molds them into boxes that can be filled with articles, and then feeds the molded cartons to the conveying device that conveys them to the article filling device As shown in FIG. (Japanese Patent Laid-Open No. 9-315412)
In this example, a drive shaft 1, a planetary shaft 2 rotatably attached to the tips of three arms 10 extending in the radial direction from the drive shaft 1, and a crank 5 fixed to the planetary shaft 2, The slider 6 attached to the tip of the crank 5 and reciprocating along the radial direction of the drive shaft 1 along the slide shaft 60, and the support bar 31 fixed to the slider 6 and the carton 50 are sucked and held. The adsorbing body 3 includes an adsorbing head 30.
The drive shaft 1 and the planetary shaft 2 are connected by a chain 51 wound around a large-diameter sprocket 52 externally fitted to the drive shaft 1 and a small-diameter sprocket 53 externally fitted to the planetary shaft 2; In this example, the planetary shaft 2 is set to rotate three times while the drive shaft 1 makes one revolution.

With the above configuration, when the drive shaft 1 is rotated counterclockwise, the planetary shaft 2 rotates in the clockwise direction, and the adsorbent 3 moves along the slide shaft 60 in conjunction with the rotation of the planetary shaft 2. And reciprocating around the drive shaft 1. Therefore, after the suction cup 30 sucks and holds the carton 50 at the point A that is the outermost position in the radial direction, the suction face that holds the carton 50 is maintained outward as shown in FIG. As it is, it is moved to point B where the transfer device 9 is provided. After supplying the molded carton 50 to the transfer device 9 at the point B, the suction cup 30 similarly follows the locus shown by the broken line in FIG. 7 while keeping the suction surface outward. Returning to the point A where the carton magazine M is provided, the taking out of the carton 50 and the supply to the transfer device 9 are repeated.
Japanese Patent Laid-Open No. 9-315412 Japanese Patent Laid-Open No. 11-277463

  However, in the carton take-out and supply device, the locus of the suction head 30 is substantially triangular, and the suction head 30 protrudes acutely outward in the radial direction of the drive shaft 1. The time when the belt 91 and the molded carton 50 are closest to each other is short, and the suction release timing of the suction head 30 is moved back and forth, so that the molded carton 50 is dropped from above or lifted by the suction head 30. For example, the supply position of the molded carton 50 is displaced.

  Further, as shown in FIG. 7, in the transport device 9 in which a pair of guide plates 90 is provided on the transport belt 91 in order to maintain the carton 50 in the opened state, the molded carton is caused by a shift in the supply position. 50 may be caught by the guide 90, and the carton 50 may be tilted or dropped from the transport device 9. In particular, the above problem is remarkable when the carton 50 is taken out and supplied at a high speed.

  As a method for solving the above problem, it is conceivable to loosen the acute protrusion of the suction head 30 outward in the radial direction, but in order to reliably take out the folded carton 50 from the carton magazine M. Since it is necessary to press the suction head 30 against the surface of the carton 50 at an angle close to vertical, if the protrusion of the suction head 30 is made loose, another problem of defective takeout of the carton 50 occurs. End up.

  The present invention has been made in view of the above circumstances, and is described as follows: `` Flatly folded cartons accommodated in a carton magazine are sequentially taken out by a suction head pressed in the overlapping direction and opened during conveyance. In a carton take-out and supply device that is boxed and formed into a box and is supplied to the subsequent transfer device, the carton is taken out from the carton magazine and the formed carton is supplied to the transfer device reliably and stably. It is an object of the present invention to make it possible to increase the speed of the carton take-out and supply device by making it possible.

(1) The carton take-out and supply device according to the first aspect of the present invention is as follows: "By rotating the drive shaft, the drive shaft makes one rotation of a planetary shaft rotatably attached to an arm extending in a radial direction from the drive shaft. Rotation transmission means for rotating a plurality of times during
A crank that is fixed to the planetary shaft, and that rotatably holds an adsorber including an adsorption head that takes out and conveys the carton by adsorption;
Slide means for guiding the adsorber in the radial direction of the drive shaft while maintaining the adsorber outward,
The rotation transmission means temporarily stops transmission of rotation from the drive shaft to the planetary shaft when supplying the molded carton to the transport device that transports the article in the tangential direction of the revolution orbit of the planetary shaft. It has a correction means to make it ".
Here, the rotation transmission means may be a mechanism in which the planetary shaft is rotated by the revolution of the drive shaft, and a mechanism that uses a chain and a sprocket as in the conventional example, or an internal gear and a planetary gear. A mechanism, a belt or a mechanism using a rope and a pulley can be considered.

  According to this, in the normal operation state where the correction means does not function, the planetary shaft attached to the arm extending from the drive shaft by the rotation of the drive shaft rotates with the arm while revolving, as in the conventional example. Thus, the crank fixed to the planetary shaft and the adsorbent held by the crank revolve around the drive shaft while rotating around the planetary shaft. Thereby, the suction head draws a star-shaped locus that protrudes radially outward of the drive shaft by the same number of rotations as the planetary shaft during one rotation of the drive shaft, and around the drive shaft. It will revolve.

When the correcting means functions, the planetary shaft does not rotate but revolves around the drive shaft together with the arm in a stopped state, so that the crank and the adsorbing member reciprocate along the radial direction of the drive shaft. Rather, it moves circularly around the drive shaft along the orbit of the planetary shaft. Thereby, the suction head revolves around the drive shaft while drawing a circular locus.
Regardless of whether or not the correction means functions, the suction head moves around the drive shaft while maintaining the suction surface that sucks the carton by the action of the slide means outward in the radial direction of the drive shaft. Revolved.

  Since it is the said structure, in the normal driving | running state, the said adsorption | suction head protrudes at an acute angle to the radial direction of the said drive shaft, takes out the folded state carton from the said carton magazine, and supplies a molded carton to a conveying apparatus. Sometimes, the carton can be supplied while driving the correction means and causing the suction head to make a circular motion along the mounting surface of the transport device.

(2) The carton take-out and supply device of the invention according to claim 2 is: “The correction means is driven intermittently every time the drive shaft rotates by a predetermined angle, and the suction head moves in the radial direction of the drive shaft. Set to temporarily stop transmission of rotation to the planetary shaft when in the innermost position,
The suction head takes out a folded carton from the carton magazine when projecting to the outermost radial position of the drive shaft, and circularly moves around the drive shaft along the orbit of the planetary shaft. Sometimes the supplied carton is supplied to the conveying device.
According to this, the suction head rotates around the drive shaft while alternately repeating the radially outward projecting motion and the circular motion along the orbit of the planetary shaft by intermittent driving of the correction means. Revolve. Therefore, in a normal driving state where the correction means is not driven, the correction means protrudes the outer side in the radial direction by the same number of rotations of the planetary shaft per revolution of the drive shaft. By temporarily stopping the rotation, the number of protrusions of the trajectory of the suction head to the outside in the radial direction can be reduced.
Thereby, it is possible to employ a rotation transmission means having a high transmission ratio such that the number of rotations of the planetary shaft per revolution of the drive shaft is 6 or 8.

(3) The carton take-out and supply device of the invention according to claim 3 is: “The suction head is disposed in the radial direction of the drive shaft in the transport path from the carton magazine to the transport device. An opening assisting device is provided for temporarily sucking and holding the outer surface of the folded carton in which the inner surface is sucked and held by the sucking head when projecting to the outermost position and opening the carton. It is characterized by that.
According to this, the folded carton is sucked and held by the opening assisting device by the radially outward projection of the sucking head, and then the sucking head returns to the inner side from the outermost position. And it is quickly formed into a three-dimensional box by being pulled from both surfaces by the opening assistance device and being opened at once. After the opening, the suction of the outer surface by the opening assistance device is released, so that the molded carton is transported to the transport device while being sucked and held by the suction head.

(4) The carton take-out and feeding device of the invention according to claim 4 is provided with “an opening support means for contacting the front end surface or the rear end surface in the conveying direction of the molded carton to support the carton in an open state. It is characterized by that.
According to this, it is possible to prevent the molded carton once molded into a three-dimensional shape from returning to the folded state due to gravity or centrifugal force.

As described above, according to the first aspect of the present invention, when the molded carton is supplied to the conveying device, the correction means is driven to temporarily stop rotation transmission from the drive shaft to the planetary shaft. By correcting the trajectory of the head, when taking out the folded carton from the carton magazine, the suction head protrudes at an acute angle outward in the radial direction of the drive shaft, thereby being close to the surface of the carton. The carton can be reliably sucked and held by pressing at an angle. Then, when supplying the molded carton to the transport device, the suction head is gently moved along the mounting surface of the transport device to release the suction, thereby ensuring that the carton is at a predetermined position. It can be mounted on.
As described above, since the removal of the carton from the carton magazine and the supply of the molded carton to the transfer device can be performed reliably and stably, the conventional problem also occurs when the drive shaft is driven at high speed. Is less likely to occur, and the speed of the carton take-out and supply device can be increased.

According to the invention of claim 2, the rotation number of the planetary shaft per revolution of the drive shaft can be reduced by intermittently driving the correction means every time the drive shaft rotates by a predetermined angle. Therefore, it is possible to prevent inconveniences such as the molded carton returning to the folded state due to unnecessary protrusion of the suction head, or the suction head protruding unnecessarily coming into contact with a peripheral device or the like. .
Further, by adopting a rotation transmission means having a high transmission ratio such that the number of rotations of the planetary shaft per revolution of the drive shaft is 6 times or 8 times, the protrusion of the suction head to the outside in the radial direction is made more acute. Therefore, the folded carton can be taken out more reliably from the carton magazine.

  According to the invention of claim 3, the opening assistance device temporarily sucks and holds the outer surface of the carton to open the carton, so that the carton is pulled from both surfaces and opened at once. Thus, the carton can be molded quickly and reliably in a short time. Therefore, the conveyance path can be shortened and the entire apparatus can be made compact.

  According to the invention according to claim 4, by supporting the front end surface or the rear end surface of the molded carton by the opening support means, it is possible to prevent the molded carton from returning to the folded state or warping. The carton formed into a fillable box can be stably supplied to the transport device.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
<Embodiment 1>
An example of the carton take-out and feeding device according to the embodiment of the present invention is shown in FIG.
The carton take-out and supply device of this example is arranged in a process of filling and packing an article into a box, and takes out the cartons 50 accommodated in a state folded flat in the carton magazine M one by one, It is for supplying to the conveying apparatus 9 conveyed to the filling apparatus which fills the articles | goods in the shape | molded carton 50, after shape | molding in the solid shape which can be filled with articles | goods during conveyance.

  In this example, a fixed shaft 11, a drive shaft 1 that is rotatably fitted to the fixed shaft 11, a disk-like arm 10 that is integrally formed on the front end of the drive shaft 1, The drive shaft 1 includes a planetary shaft 2 that is rotatably attached to the tip of the arm, a planetary gear 20 that is externally fixed to one end of the planetary shaft 2, and an internal gear 12 that meshes with the planetary gear 2. Rotation transmitting means for rotating the planetary shaft 2 in the reverse direction by rotation, a crank 5 fixed to the other end of the planetary shaft 2 and rotating together with the planetary shaft 2, and rotatably held at the tip of the crank 5. An adsorbing body 3 comprising a supporting rod 31 and an adsorbing head 30 attached to the supporting rod 31, a slide shaft 60 rotatably attached to the fixed shaft 11 via a rotating plate 61, and the supporting rod 31. The slide attached to the bottom And a correcting means 4 having a correcting gear 40 that meshes with the internal gear 12 and rotates the internal gear 12 in the same direction as the drive shaft 1; A support rod 71 rotatably attached to the arm 10, an opening support means comprising an L-shaped auxiliary lever 7 attached to the support rod 71, and a cam mechanism, and a folded state attracted and held by the suction head 30 And a carton opening assisting device 8 for temporarily holding and opening the carton 50. A circular top plate T is attached to the rotating plate 61.

In this example, three planetary shafts 2 are provided at every 120 degrees of the tip of the arm 10, and the planetary gear 2 and the internal gear 12 have a diameter ratio of 1: 6. Is set to Therefore, while the drive shaft 1 revolves counterclockwise, the planetary shaft 2 rotates six times clockwise, and the adsorbent 3 attached to the planetary shaft 2 via the crank 5 is attached to the planetary shaft. 2 is rotated at a speed 6 times that of the drive shaft 1.
Further, in this example, the whole device is changed by changing the height position of the fixed shaft 11 in accordance with the size and shape of the molded carton 50 and the height position of the mounting surface 91 of the transfer device 9. Can be moved up and down.

As shown in FIG. 1, the drive shaft 1 is held by a support frame 13 that is rotatably fitted on a peripheral wall of the drive shaft 1, and a rear end portion of the drive shaft 1 (not shown here) It is rotationally driven by a drive belt wound around a drive motor. In addition, an air passage 14 is formed in the drive shaft 1 along the axial direction for sucking and discharging air in the suction surface of the suction head 30 described later.
The planetary shaft 2 is rotatably attached to the arm 10 such that a rear end portion protrudes rearward, the crank 5 is fixed to the front end, and the internal gear 12 meshes with the rear end. The planetary gear 20 is fixed.

  The internal gear 12 is rotatably fitted on the drive shaft 1, and a front internal gear 120 that meshes with the planetary gear 20 divided forward and backward by a partition plate 123, and a correction gear 40 described later. The rear inner teeth 121 are engaged with each other. When only the drive shaft 1 is rotationally driven, the internal gear 12 is maintained in a stopped state by the correction gear 40 meshed with the rear internal teeth 121, and the drive is performed by the rotational drive of the correction gear 40. It is configured to rotate in the same direction as the shaft 1.

  As shown in FIG. 1, the correction means 4 is driven separately from the drive gear 1 and the correction gear 40 that meshes with the rear internal teeth 121 of the internal gear 12, and the drive that rotates the correction gear 40. The motor 41 is comprised. The correction gear 40 functions as a stopper of the internal gear 12 that is rotatably fitted to the drive shaft 1 when not driven, and the internal gear 12 is driven at the same speed in the same direction as the drive shaft 1 when driven. The rotation of the planetary shaft 2 is temporarily stopped by canceling the transmission of rotation from the drive shaft 1 to the planetary shaft 2. In this example, the correction gear 40 is set to the same diameter as the planetary gear 2.

The crank 5 rotatably holds a support rod 31 having a suction head 30 that sucks and holds the carton 50 at the tip, and the rotation radius of the crank 5 (from the center of the planetary shaft 2 to the support rod). (Distance to the center of 31) is set to 1/5 of the distance from the center of the fixed shaft 11 to the center of the support rod 31.
Two suction heads 30 are attached to the support bar 31 in the front-rear direction so as to face outward on the suction surface, and the suction head 30 is mounted between the attachment position and the suction heads 30 by an attachment member 32. The distance can be adjusted.

As shown in FIG. 2, when the suction head 30 is located at the innermost position in the radial direction of the drive shaft 1, the suction head 30 is substantially at the same position as the peripheral edge of the top plate T, and when located at the outermost position, It is set so as to protrude largely outward from the periphery of T. The suction / discharge of the suction surface of the suction head 30 is performed via the air passage 14 formed along the planetary shaft 2, the crank 5, the support rod 31, and the attachment member 32 from the arm 10 of the drive shaft 1. This is performed by a rotary valve (not shown) provided at the rear end of the drive shaft 1.
Below the support rod 31, a pair of slide shafts 60 attached in the radial direction of the drive shaft 1 so as to sandwich the support rod 31 from both sides from a rotating plate 61 rotatably attached to the drive shaft 1. A slider 6 that reciprocates along is attached. Thereby, the suction head 30 revolves around the drive shaft 1 in a state where the suction surface is always kept outward.

  The opening support means includes a support bar 71 that revolves together with the arm 10, and two auxiliary levers 7 that are attached in the front-rear direction of the support bar 71 and abut against and support the front end surface of the molded carton 50. And a cam mechanism attached to the lower part of the support bar 71. The cam mechanism includes a disc-shaped cam plate 72 that is externally fitted and fixed to the fixed shaft 11, and a cam groove 74 that has one end externally fixed to the support rod 71 and the other end formed in the cam plate 72. The cam follower 73 to which the cam 75 which moves along is attached is comprised. In this example, as shown in FIG. 4, only when the folded carton 50 is opened at point C until it is supplied to the conveying device 9 at point D, the auxiliary lever 7 The cam groove 47 is formed so that the tip portion protrudes outward from the peripheral edge of the top plate T and can support the molded carton 50 in the opened state.

  As shown in FIG. 2, the opening assistance device 8 has a configuration in which a suction head 80 is attached to the tip of a rotatable arm 81, and the inner surface 51 is moved by the suction head 30 of the suction body 3. In FIG. 2, while the suctioned and folded carton 50 is protruded to the outermost position, the suction head 80 is pressed substantially vertically against the outer surface 52 of the carton 50 to temporarily hold it. By returning to the standby position indicated by the one-dot difference line, the carton 50 can be pulled from both the inner and outer surfaces to be opened at once.

* Actual Operation of Carton Removing / Supplying Device Next, an actual operation when taking out the carton 50 from the carton magazine M using the carton removing / supplying device and supplying it to the conveying device 9 will be described in detail.
As shown in FIG. 2, when the drive shaft 1 is driven to rotate counterclockwise, the planetary gear 20 is six times as large as the drive shaft 1 due to meshing with the front internal teeth 120 of the internal gear 12. Rotates clockwise at speed. That is, while the drive shaft 1 rotates 60 degrees, the suction body 3 rotates once around the planetary shaft 2, so that the suction head 30 keeps the suction surface facing outward while driving the drive shaft 1. The shaft 2 reciprocates once between the radially innermost position and the outermost position. Therefore, as shown in FIG. 2 and FIG. 3A, the suction head 30 draws the drive shaft 1 while drawing a mountain-shaped locus that projects acutely outward from the periphery of the top plate T in the radial direction. Revolve around.

The suction head 30 projected at the point A sucks and holds the carton 50 by pressing it at an angle close to perpendicular to the surface of the carton 50 accommodated in the carton magazine M, and the innermost position in the radial direction. The carton 50 is taken out from the carton magazine M by returning to step S2.
As shown in FIG. 3, when the suction head 30 returns to the innermost position (when the drive shaft 1 rotates 60 degrees), the drive motor 41 of the correction means 4 is driven to correct the correction gear 40. To rotate the internal gear 12 in the same direction as the drive shaft 1 at the same speed. Thereby, transmission of rotation from the drive shaft 1 to the planetary shaft 2 is stopped, so that the planetary shaft 2 moves circularly around the drive shaft 1 in the innermost position without moving in the radial direction. . Thereby, the suction head 30 revolves around the drive shaft while drawing a circular trajectory along the periphery of the top plate T, as shown by point B in FIGS. Therefore, the carton 50 sucked and held by the suction head 30 is also conveyed along the periphery of the top plate T while making a circular motion.

  When the drive of the correction means 4 is stopped when the drive shaft 1 has rotated to 120 degrees, the transmission of rotation from the drive shaft 1 to the planetary shaft 2 is resumed, and C in FIGS. As indicated by the dots, the suction head 30 protrudes acutely from the periphery of the top plate T to the outside while holding the carton 50. At this time, the arm 81 of the opening assistance device 8 is rotated so that the suction head 80 is pressed substantially perpendicularly to the outer surface 52 opposite to the inner surface 51 held by the suction head 30, so that the carton 50 is Temporarily adsorb and hold. The carton 50 is pulled to both the inside and outside by the suction head 30 to return to the innermost position and the arm 81 to return to the standby position, and is opened at a stretch to be formed into a three-dimensional box. .

When the carton 50 is molded, the suction of the suction head 80 of the opening assisting device 8 is released, so that the molded carton 50 is held by the suction head 30 and held at the periphery of the top plate T. And revolves around the drive shaft 1.
As shown in FIG. 4, the carton 50 does not return to the folded state from when it is opened at point C until it is supplied onto the conveying belt 91 of the conveying device 9 at point D. The front end surface in the transport direction is supported by the auxiliary lever 7 that protrudes outside the peripheral edge of the top plate T by a mechanism.

When the drive shaft 1 is rotated up to 180 degrees, the correction unit 4 is driven again, and the suction head 30 moves circularly along the transport belt 91 of the transport device 9 at the radially innermost position. Then, the molded carton 50 sucked and held by the suction head 30 is placed between the guide plates 90 projecting from the conveyor belt 91.
In this example, even after the molded carton 50 is supplied, as shown in FIGS. 2 and 3, when the drive shaft 1 rotates 240 degrees, the driving of the correction means 4 is stopped, and 300 The correction unit 4 is driven again when the rotation is rotated, and the driving and stopping of the correction unit 4 are repeated every time the drive shaft 1 rotates 60 degrees.
Therefore, the cartons 50 are sequentially adsorbed by the three adsorbing bodies 3 arranged at intervals of 120 degrees on the arm 10 of the drive shaft 1, and the three cartons 50 are taken out while the drive shaft 1 rotates once. , And can be supplied to the transfer device 9.

  As described above, according to the carton take-out and supply device of this example, the correction means 4 temporarily stops the rotation transmission from the drive shaft 1 to the planetary shaft 2 to correct the locus of the suction head 30. Further, when taking out the folded carton 50 from the carton magazine M, as in the conventional example, the suction head 30 is protruded acutely outward in the radial direction of the drive shaft 1 so that the carton 50 is securely attached. Can be taken out. Then, when the molded carton 50 is supplied to the transport device 9, the suction head 30 is caused to make a circular motion along the transport belt 91 of the transport device 9 to ensure that the carton 50 is in a predetermined position. Can be supplied to. As described above, since the removal of the carton 50 and the supply of the molded carton 50 can be performed reliably and stably, the carton 50 can be taken out and supplied even when the drive shaft 1 is driven to rotate at a high speed. Sometimes trouble is less likely to occur. Therefore, it is possible to increase the speed of the carton take-out and supply device.

  In this example, every time the drive shaft 1 rotates 60 degrees, the correction means 4 is intermittently driven, so that the planetary shaft 2 is normally 6 while the drive shaft 1 makes one revolution. Since the number of rotations is reduced to 3 times and the suction head 30 is circularly moved at the innermost position, the suction head 30 is not unnecessarily protruded, and the suction head 30 Can prevent inconvenience such as contact with peripheral devices. Further, since the transmission ratio of rotation from the drive shaft 1 to the planetary shaft 2 is high, the suction head 30 protrudes at a more acute angle than the one having a low transmission ratio. The carton 50 can be taken out from the carton magazine M more reliably.

By disposing the opening assisting device 8 in the transport path of the carton 50, the carton 50 can be opened at once and can be quickly and surely formed into a three-dimensional box. The path can be shortened and the entire apparatus can be made compact.
Further, by supporting the molded carton 50 with the auxiliary lever 7, it is possible to prevent the molded carton 50 from returning to the folded state or warping, so that the carton 50 molded into a box that can be filled with articles. Can be stably supplied to the transfer device 9.
Further, in this example, the height position of the fixed shaft 11 can be changed so that the entire apparatus can be moved up and down easily, so that the carton 50 can be easily resized. It is.

<Embodiment 2>
FIG. 5 shows the drive shaft only when the carton 50 is taken out from the carton magazine M and when the carton 50 is opened by the opening assisting device 8 by the action of the correction gear 40 as the correction means. 1 shows a carton take-out and supply device in which the suction head 30 protrudes outwardly in the radial direction.
In this example, as shown in FIG. 5, the carton magazine M and the opening assistance device 8 are provided at a position of 180 degrees, and the drive shaft 1 is rotated by 60 degrees and 240 degrees. The correction unit 4 is sometimes driven and has the same configuration as that of the first embodiment except that the correction unit 4 is set to stop when rotated 180 degrees or 240 degrees. .

  5 (a) and 5 (b), the suction head 30 has the above-described configuration by the point A for taking out the carton 50 from the carton magazine M and the opening assisting device 8 as described above. While the carton 50 is opened at only two points, point D, the drive shaft 1 protrudes in a mountain shape outwardly in the radial direction, and at other points, a trajectory that moves circularly along the periphery of the top plate T is drawn. Revolve around the drive shaft 1.

  According to this, as in the first embodiment, the carton 50 can be taken out, opened, and supplied more reliably, so that the speed of the carton take-out and supply device can be increased. Further, the suction head 30 is projected outward in the radial direction of the drive shaft 1 only when necessary, and is circularly moved along the automatic revolution of the drive shaft 1 at the innermost position when not required. There is no waste in the 30 trajectories, and the carton 50 can be taken out and supplied smoothly.

* Others The carton take-out and supply device of the present invention is not limited to the above embodiment.
In the above example, the rotation transmitting means is set so that the planetary shaft 2 rotates six times while the drive shaft 1 makes one revolution, but the planetary shaft per revolution of the drive shaft 2 The number of rotations of 2: n may be set to any number of rotations as long as n = 2 or more. Further, the number of the adsorbing bodies 3 including the adsorbing heads 30 may be equal to or less than the number of rotations of the planetary shaft 2 per revolution of the driving shaft 1: n, and three (1 / N pieces, 2n / 3 pieces).

  In the above example, the correction gear 40 is driven when the suction head 30 is at the radially innermost position of the drive shaft 1, and the suction head 30 is moved along the edge of the top plate T. The trajectory is corrected so as to make a circular movement, but if the suction head 30 can project acutely outward in the radial direction when the carton 50 is taken out of the carton magazine M, the suction head The correction means may be driven when 30 is in any position in the radial direction.

  In the above-described example, the auxiliary lever 7 of the opening support means is in contact with the front end surface in the transport direction of the molded carton 50 to maintain the molded carton 50 in the opened state. Depending on the folding mode and the three-dimensional shape of the carton 50, the rear end surface may be supported in the transport direction.

It is sectional drawing which shows the carton taking out and supplying apparatus which concerns on Embodiment 1 of this invention. It is the schematic which shows operation | movement of a carton taking-out supply apparatus. It is a chart which shows notionally the locus of a suction head. It is the schematic which shows the state which supplies the shape | molded carton to a conveying apparatus. (A) It is the schematic which shows the carton extraction supply apparatus which concerns on Embodiment 2 of this invention. (B) A chart conceptually showing the locus of the suction head. It is a front view of a prior art example. It is the schematic which shows the locus | trajectory of the suction head of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drive shaft 10 Arm 12 Internal gear 2 Planetary shaft 20 Planetary gear 3 Adsorption body 30 Adsorption body 4 Correction means 40 Correction gear 5 Crank 50 Carton 6 Slider 60 Slide shaft 7 Auxiliary lever 8 Opening assistance device 9 Conveying device M Carton magazine

Claims (4)

The flat folded cartons accommodated in the carton magazine are sequentially taken out by the suction head pressed in the overlapping direction, opened during transport, formed into a box, and supplied to the subsequent transport device In the carton take-out and supply device,
Rotation transmitting means for rotating a planetary shaft rotatably attached to an arm extending in a radial direction from the drive shaft by rotating the drive shaft a plurality of times while the drive shaft makes one rotation;
A crank that is fixed to the planetary shaft, and that rotatably holds an adsorber including an adsorption head that takes out and conveys the carton by adsorption;
Slide means for guiding the adsorber in the radial direction of the drive shaft while maintaining the adsorber outward,
The rotation transmission means temporarily stops transmission of rotation from the drive shaft to the planetary shaft when supplying the molded carton to the transport device that transports the article in the tangential direction of the revolution orbit of the planetary shaft. A carton take-out and supply device, characterized in that it has a correcting means. The carton take-out and feeding device according to claim 1,
The correction means is intermittently driven every time the drive shaft rotates by a predetermined angle, and temporarily transmits rotation to the planetary shaft when the suction head is at the radially innermost position of the drive shaft. Is set to stop automatically,
The suction head takes out a folded carton from the carton magazine when projecting to the outermost radial position of the drive shaft, and circularly moves around the drive shaft along the orbit of the planetary shaft. A carton take-out and supply device characterized in that the molded carton is sometimes supplied to the transport device. In the carton take-out and supply device according to claim 1 or 2,
In the conveyance path from taking out the carton from the carton magazine and supplying it to the conveyance device, the adsorption head adsorbs the inner surface when the adsorption head projects to the outermost position in the radial direction of the drive shaft. A carton take-out and supply device characterized in that an opening assisting device is provided for temporarily sucking and holding the outer surface of the held folded carton to open the carton. In the carton take-out and supply device according to any one of claims 1 to 3,
A carton take-out and feeding device, comprising: an opening support means for contacting the front end surface or the rear end surface of the molded carton in the conveying direction to support the carton in an open state.

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