JP2018012524A - Packing material take-out device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing material take-out device which can take out laminated packing materials one by one.SOLUTION: A take-out device for a packing material 2 comprises a first suction pad which is vertically moved toward a lower side of a stacker 1, is pressed onto a lowermost packing material 2 of packing materials 2, which are accommodated in the stacker 1 in a laminated state, and adsorbs the lowermost packing material 2. The first suction pad is inclined with respect to an underside of the laminated packing materials 2 when the lowermost packing material 2 is lowered in an adsorbed state, and is lowered in the state that the pad is inclined with respect to the underside of the lowermost packing material 2, whereby the lowermost packing material 2 and other packing materials 2 are separated while a contact point between the lowermost packing material 2 adsorbed by the first suction pad and the other packing materials 2 laminated on the lowermost packing material 2 is moved from one end side to the other end side.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an apparatus for taking out a packaging material, and more particularly to an apparatus for taking out the packaging material from the lower side of a laminated packaging material.

  An example of a packaging bag used in this type of device is described in Patent Document 1. The packaging bag has an opening-side fin portion on the opening side, and a main holding hole is formed in the opening-side fin portion. A closing side fin portion is formed on the opposite side of the opening side fin portion, and a sub holding hole that is easily broken from the main holding hole is formed in the closing side fin portion. Further, in the configuration described in Patent Document 1, an accumulator that holds the packaging bag having the above-described configuration is provided with an accumulation rod that is inserted into the main holding hole and a blocking rod that is inserted into the auxiliary holding hole. The sticks are inserted into the holding holes, and the packaging bag is held by the accumulator. A suction cup holding plate that is close to and away from the stacker is disposed below the stacker. A plurality of suction cups communicating with a vacuum suction device are provided on the suction cup holding plate. Then, the suction cup holding plate is raised and pressed parallel to the lower surface of the packaging bag held by the stacker, and the packaging bag is adsorbed to the suction cup holding plate. Next, the suction cup holding plate is lowered parallel to the lower surface of the packaging bag. When the suction cup holding plate is lowered as described above, the auxiliary holding hole is broken by the blocking bar, but the main holding hole is not broken. Therefore, the opening-side fin portion is held by the accumulator, and the packaging bag is pulled out below the accumulator while opening.

JP-A-8-133234

  A load corresponding to the weight of the packaging bags stacked above the lower packaging bag acts on the lower packaging bag in the stacking direction, and the upper and lower packaging bags are engaged with each other by the load. In the configuration described in Patent Document 1, the suction cup holding plate is lowered parallel to the lower surface of the packaging bag held by the stacker. That is, since the suction cup holding plate is lowered while the packaging bag adsorbed on the suction cup holding plate and the packaging bag laminated on the packaging bag are engaged, a plurality of packaging bags may be taken out. There is.

  An object of the present invention is to provide a packaging material take-out device that can take out laminated packaging materials one by one.

  In order to achieve the above object, the present invention provides a packaging material takeout device configured to accommodate packaging materials in a stacked state in a stacker and to take out the packaging material from the lower side of the stacker. While being moved up and down toward the lower side of the stacker, it is pressed against the lowermost packaging material among the packaging materials stored in a stacked state in the stacker and the lowermost packaging material is adsorbed The first suction pad is inclined with respect to the lower surface of the laminated packaging material when the first suction pad is lowered in a state where the lowermost packaging material is adsorbed, And being lowered in a state inclined with respect to the lower surface of the packaging material, the lowermost packaging material adsorbed by the first suction pad, and the uppermost packaging material Laminated to The lowermost packaging material and the other packaging material are separated while moving the contact point with the other packaging material from one end side to the other end side. To do.

  Further, according to the present invention, a second suction pad that is connected to the first suction pad and constitutes a work table is provided below the stacker, and the second suction pad is provided on the work table. The pad is arranged at a position corresponding to the opening of the lowermost packaging material taken out from the stacker by the pad, and the opening is sucked. The unevenness may be formed, and the opening may be wrinkled by the unevenness.

  Further, according to the present invention, a third suction pad is provided above the second suction pad, and the third suction pad is configured to approach and separate from the second suction pad. With the lowermost packaging material being adsorbed, the third suction pad comes into contact with the opening side of the lowermost packaging material by bringing the third suction pad closer to the second suction pad. The opening may be opened by adsorbing the opening side to the third suction pad and separating the third suction pad from the second suction pad.

  According to this invention, the 1st suction pad which made the lowermost packaging material adsorb | suck is dropped in the state inclined with respect to the lower surface of the laminated | stacked packaging material. Therefore, the contact point between the lowermost packaging material and the other packaging material laminated on the lowermost packaging material can be moved from one end side to the other end side. That is, since the packaging materials can be gradually separated from each other, the plurality of packaging materials can be prevented from being pulled out from the stacker at a time, or can be taken out one by one. In addition, since the first suction pad is disposed below the stacker, the space in the height direction can be used effectively.

  Moreover, according to this invention, since the work table is configured by connecting the first suction pad and the second suction pad, the area for fixing the packaging material can be widened. Thereby, the movement of the packaging material when opening the packaging material can be prevented. Moreover, since the wrinkles can be formed at the opening end of the packaging material adsorbed on the second suction pad by the irregularities formed on the second suction pad, when opening the opening, Air gets inside. As a result, it becomes easy to open the packaging material.

  Furthermore, according to this invention, the third suction pad provided above the second suction pad is sucked into the opening of the packaging material, and the third suction pad and the second suction pad are separated from each other. Open the open end of the packaging material up and down. Therefore, the space in the height direction can be used effectively.

It is a side view of the stacker in this invention. It is a top view of the stacker in this invention. It is a side view which shows the work table arrange | positioned under a stacker. It is a figure which shows the state which fixed the packaging material to the upper surface of a work table. It is an upper view which shows an example of a structure of the 1st suction pad and the 2nd suction pad in this invention. It is a figure for demonstrating operation | movement of the apparatus based on this invention. It is a figure which shows the other example of a structure of the 1st suction pad in this invention.

  The packaging material take-out device according to the present invention is a device that automatically performs a step of taking out the laminated packaging materials one by one from the lower side in the laminating direction and a step of opening the taken out packaging material. As will be described below, the structure for taking out the packaging materials one by one is that the suction pad is adsorbed to the lower surface of the packaging material arranged at the bottom in the stacking direction, and the lower surface of the packaging bag in which the adsorption pad is stacked And the suction pad is lowered with respect to the lower surface of the laminated packaging bag.

  FIG. 1 is a side view of a stacker according to the present invention, and FIG. 2 is a top view of the stacker according to the present invention. The stacker 1 is configured to store a plurality of bundles 3 in which, for example, about 50 to 500 packaging materials 2 are stacked. Further, the bundle 3 is supplied from the upper part of the stacker 1 to the inside thereof, and the packaging material 2 is taken out from the lower part of the stacker 1. As shown in FIG. 1, shutters 4 are provided at regular intervals in the height direction of the stacker 1. Each shutter 4 is configured to be removable from the stacker 1, and the bundle 3 is placed on each shutter 4. By doing so, a load corresponding to the weight of the bundle 3 disposed above in the height direction of the stacker 1 does not act on the lower bundle 3. When the shutter 4 is pulled out from the stacker 1, the bundle 3 of the packaging material 2 placed on the shutter 4 falls downward and is stacked on the lower packaging material 2.

  A positioning member 5 adjacent to the shutter 4 and extending in the height direction of the stacker 1 is attached to the side wall 6 of the stacker 1. The positioning member 5 determines the position of the bundle 3 on the shutter 4. Further, since the positioning member 5 is formed to extend in the height direction of the stacker 1 in the example shown here, the bundle 3 falls along the positioning member 5 when the shutter 4 is pulled out.

  A hole penetrating in the thickness direction of the lower plate 7 is formed in the lower plate 7 of the stacker 1. In the example shown in FIG. 1, the hole is formed in a long hole shape extending in the length direction of the packaging material 2, and the packaging material 2 is placed on the lower plate 7 so as to close the hole. Therefore, among the bundles 3 arranged on the lower side of the stacker 1, the central portion of the packaging material 2 arranged on the lowermost side in the stacking direction is exposed from the hole. The outer peripheral portion of the packaging material 2 contacts the peripheral portion of the hole, that is, the lower plate 7 of the stacker 1. And the 1st suction pad attached to the main chamber 9 arrange | positioned under the stacker 1 is pressed by the center part of the packaging material 2 exposed from this hole, and it adsorb | sucks to the 1st suction pad. Thereafter, the bundle 3 is peeled off as the main chamber 9 is lowered. The hole functions as an outlet for the packaging material 2. In the following description, the hole is referred to as a takeout port 8. The configurations of the main chamber 9 and the first suction pad will be described later.

  The lower plate 7 is fixed at a predetermined angle with respect to a frame member (not shown) of the take-out device according to the present invention. The frame member is horizontally attached to a fixed portion (not shown), and an angle θ1 formed by the frame member and the lower plate 7 is designed to be 20 °. In addition, said packaging material 2 is formed in the bag shape as an example. As shown in FIG. 2, one end 2A formed in a fan shape is an opening, and the other end 2B formed in a rectangular shape is closed. The width of one end 2A is wider than the width of the other end 2B. That is, the outer shape of the packaging material 2 is generally fan-shaped or triangular, and when the opening 2A is opened as will be described later, the internal shape of the packaging material 2 is substantially triangular.

  FIG. 3 is a side view showing a work table disposed on the lower side of the stacker 1. The work table 10 includes a main chamber 9, a movable table 11 rotatably attached to the frame member, and a sub-chamber 12 fixed to the movable table 11. First, the configuration of the main chamber 9 will be described. The main chamber 9 is formed in a rectangular cup shape, and a first suction pad described later is attached to the opening. Further, the outer dimension of the main chamber 9 is smaller than the inner dimension of the take-out port 8 described above. This is because a first suction pad, which will be described later, is pressed against the packaging material 2 exposed from the take-out port 8. A main hose (not shown) is connected to the bottom of the main chamber 9. This main hose is connected to a vacuum pump (not shown). Therefore, when the vacuum pump is operated, air is sucked through the first suction pad, the main chamber 9 and the main hose, and the packaging material 2 is sucked by the first suction pad by the suction force. In addition, a piston in the elevating cylinder 13 is connected to the bottom, and is configured to move up and down by the elevating cylinder 13. Further, a guide shaft 14 is attached. A guide hole (not shown) into which the guide shaft 14 is inserted is formed in the movable base 11. These guide shafts 14 and guide holes guide the vertical movement of the main chamber 9.

  The movable table 11 is configured to engage the main chamber 9 on the upper side thereof and fix the main chamber 9 horizontally. Further, when the main chamber 9 is raised toward the stacker 1, the movable table 11 is configured to be inclined so that the main chamber 9 fixed to the upper side of the movable table 11 faces the stacker 1 side. Yes. As shown in FIG. 3, a lower right end portion 11A is rotatably attached to a frame member (not shown) in the left-right direction of FIG. When the elevating cylinder 13 is operated, the main chamber 9 starts to rise. When the main chamber 9 rises in this way, the movable base 11 moves or rotates with the lower right end portion 11A obliquely upper right in FIG. As a result, the main chamber 9 is directed to the stacker 1 side. The rotation angle θ2 of the movable table 11 is designed to be 30 °, for example. When the main chamber 9 is lowered, the movable base 11 rotates in the opposite direction to make the upper surface horizontal, and the main chamber 9 engages with the upper part of the movable base 11. Thus, the position of the main chamber 9 when the main chamber 9 is engaged with the movable base 11 is a so-called base position. The angle θ3 formed between the main chamber 9 and the lower plate 7 inclined as described above is designed to be 10 °, for example. Therefore, the main chamber 9 and the first suction pad are brought into contact with and separated from the bottom surface of the bundle 3 in the stacker 1 while being inclined by 10 °.

  A sub chamber 12 is attached adjacent to the main chamber 9 engaged with the movable table 11. The sub-chamber 12 constitutes a work table 10 together with the main chamber 9, and a first suction pad and a second suction pad are attached to the upper surface of the work table 10, and the packaging material 2 is sucked through these pads. And fix. Specifically, as shown in FIG. 4, the main chamber 9 is disposed at a position corresponding to the opening 2 </ b> A of the packaging material 2 taken out from the stacker 1. The sub chamber 12 is mainly configured in the same manner as the main chamber 9, and is connected to a vacuum pump via a hose (not shown). The configuration of the second suction pad will be described later.

  Further, as shown in FIG. 3, a third suction pad 15 is provided above the work table 10. The third suction pad 15 is pressed against the opening 2A of the packaging material 2 fixed to the work table 10 and sucks the opening 2A. And it is comprised so that the opening part 2A of the packaging material 2 may be opened by separating from the work table 10. FIG. Although details are not shown, like the main chamber 9 and the sub chamber 12, they are connected to a vacuum pump via a hose. Moreover, the piston of the raising / lowering cylinder which is not shown in figure is connected to the 3rd adsorption | suction pad 15, It is made to approach the work table 10 by the raising / lowering cylinder, and is made to separate.

  Here, the structure of the first suction pad and the second suction pad described above will be described. As shown in FIG. 5, the first suction pad 16 has a rectangular shape and is designed to have the same external dimensions as the main chamber 9. A rib portion 17 extending in the length direction is formed in the center portion of the first suction pad 16 in the width direction. Grooves 18 having a shallow depth measured in the thickness direction of the first suction pad 16 are formed along the ribs 17 on both sides of the ribs 17. A plurality of holes penetrating in the thickness direction of the first suction pad 16 are formed in each groove portion 18 at regular intervals in the length direction. In the example shown here, twelve pieces are formed on the top and bottom in FIG. When the first suction pad 16 is attached to the main chamber 9 and the vacuum pump is operated, air is sucked into the main chamber 9 through these holes and the groove portion 18, and the first suction pad 16 is packed into the first suction pad 16 by the suction force. 2 is adsorbed. That is, each hole functions as an adsorption hole. In the following description, each hole is referred to as an adsorption hole 19. As shown in FIG. 5, these suction holes 19 are formed so as to be offset toward one end side of the first suction pad 16. The second suction pad 20 is disposed on the one end side. Further, both ends of the first suction pad 16 in the vertical direction in FIG. 5 are designed so that the height measured in the plate thickness direction is the same as that of the rib portion 17. Bolt holes 21 are formed at both ends. The first suction pad 16 is bolted to the main chamber 9 described above using each bolt hole 21.

  The second suction pad 20 has a length measured in a direction parallel to the length direction of the first suction pad 16 shorter than the first suction pad 16 and a length measured in a direction parallel to the width direction of the first suction pad 16. Is longer than the first suction pad 16. Both end sides in the width direction of the second suction pad 20 are formed so as to extend to the first suction pad 16 as shown in FIG. By doing so, the second suction pad 20 is formed with a concave portion 22 whose length measured in the length direction is shallow, and one end portion of the first suction pad 16 is arranged or connected to the concave portion 22. .

  Further, a plurality of groove portions 23 having a shallow depth measured in the thickness direction are formed in the second suction pad 20. In the example shown here, three are formed, and concave portions and convex portions are alternately formed in the width direction. Each groove 23 extends from one end to the other end in the length direction of the second suction pad 20. Each groove 23 formed on both ends in the width direction of the second suction pad 20 is formed wider than the groove 23 formed in the center in the width direction. Each groove 23 is formed with one hole penetrating in the thickness direction. Therefore, air is sucked into the sub-chamber 12 through these holes, and the opening 2A of the packaging material 2 is sucked to the second suction pad 20 by the suction force. Each hole functions as an adsorption hole 24. In the example shown here, as described above, the concave portions and the convex portions are alternately formed in the width direction of the second suction pad 20, so that the opening 2A of the packaging material 2 is formed along the concave and convex portions. My self is formed. Each of the center part and both ends in the width direction of the second suction pad 20 is designed to have the same height. And the center part and both ends of the width direction of the 2nd suction pad 20 are fixed to the movable stand 11 so that the rib part 17 and both ends of the 1st suction pad 16 may become the same height.

  Next, the operation of the above-described apparatus according to the present invention will be described. FIG. 6 is a diagram for explaining the operation of the apparatus according to the present invention. For example, when the main switch is turned on and a packaging object is detected by a sensor (not shown), as shown in FIG. 6A, the elevating cylinder 13 starts operation, and the main chamber 9 and the first attached to the main chamber 9 are started. The suction pad 16 is raised toward the stacker 1. When the piston of the elevating cylinder 13 is further raised, the first suction pad 16 enters the stacker 1 from the outlet 8. The first suction pad 16 is pressed against the lower surface of the bundle 3 arranged at the lowermost position in the stacker 1, that is, the lowermost packaging material 2. The bundle 3 may be slightly pushed up by the first suction pad 16 as shown in FIG. Since the vacuum pump is operating and air is sucked through the first suction pad 16, the packaging material 2 is sucked to the first suction pad 16 by the suction force.

  Next, when the piston of the elevating cylinder 13 is returned, the first suction pad 16 is lowered accordingly. Since the first suction pad 16 is inclined by 10 ° with respect to the lower plate 7, the bundle 3 pushed up as described above starts to contact the lower plate 7 from the other end 2 </ b> B side of the packaging material 2. These contact points move from the other end 2B side of the packaging material 2 to the one end 2A side as the first suction pad 16 descends. That is, it moves from the right side to the left side in the left-right direction in FIG. In addition to this, the other end 2B of the packaging material 2 adsorbed by the first adsorption pad 16 and another packaging material laminated on the packaging material 2 adsorbed by the first adsorption pad 16 are combined. 2 starts to separate from the other end 2B. That is, the contact point or peeling point of the packaging material 2 moves from the other end portion 2B side of the packaging material 2 to the one end portion 2A side as described above. As a result, the lowermost packaging material 2 is peeled off from the bottom of the bundle 3 as shown in FIG.

  Although the central portion of the packaging material 2 is adsorbed by the first suction pad 16, the outer peripheral portion of the packaging material 2, that is, one end portion 2A is not adsorbed by the first suction pad 16, so that FIG. ) Protrudes from the first suction pad 16. When the piston of the elevating cylinder 13 is further returned, one end of the first suction pad 16 is connected to the recess 22 of the second suction pad 20 attached to the movable base 11 in the process. At this time, one end 2 </ b> A of the packaging material 2 protruding from the first suction pad 16 is sucked to the second suction pad 20. Further, the main chamber 9 is engaged with the movable base 11. When the piston of the elevating cylinder 13 is returned to the original position, the rotation angle of the movable base 11 becomes 0 °. In this way, the work table 10 is configured as shown in FIG. Since the vacuum pump continues to operate, the packaging material 2 is brought into close contact with the work table 10.

  At substantially the same time as the work table 10 is configured, the elevating cylinder of the third suction pad 15 starts operating and approaches the work table 10. Then, as shown in FIG. 6F, the third suction pad 15 comes into contact with the opening 2A of the packaging material 2 sucked by the second suction pad 20, and sucks it. Subsequently, when the piston of the lifting cylinder of the third suction pad 15 is returned, the second suction pad 20 and the third suction pad 15 are separated from each other. As a result, the opening 2A of the packaging material 2 is opened as shown in FIG. In this state, the operation of the elevating cylinder of the third suction pad 15 is temporarily stopped, or the packaging object is inserted into the packaging material 2 in accordance with the opening of the opening 2 </ b> A of the packaging material 2. In the example shown here, the packaging object is grasped and lifted by the tongue 25 and inserted into the packaging material 2 in that state. The mechanism for operating the tongue 25 and the tongue 25 may be a conventionally known mechanism.

  When the packaging object is inserted into the packaging material 2, the third suction pad 15 is retracted as shown in FIG. 6 (h). That is, the suction by the third suction pad 15 is temporarily stopped and the piston of the elevating cylinder is returned to the original position. Next, the tongue 25 is further advanced and advanced on the conveyor 26 disposed in front of the work table 10 and adjacent to the work table 10. The conveyor 26 is a belt conveyor, and may be a belt conveyor having a conventionally known configuration. In the state where the tongue 25 has advanced on the conveyor 26, the lower part of the packaging material 2 is not in contact with the conveyor 26.

  When the tongue 25 advances on the conveyor 26, the stopper 27 arranged on the side of the conveyor 26 operates. This stopper 27 presses the other end 2 </ b> B side of the packaging material 2 onto the conveyor 26. This is because when the tongue 25 is pulled out from the packaging material 2, the packaging material 2 is prevented from moving with the operation of the tongue 25. Therefore, the tongue 25 holding the object to be packaged is released in a state where the other end 2B side of the packaging material 2 is pressed onto the conveyor 26 by the stopper 27, and the tongue 25 is pulled out from the packaging material 2. It is. FIG. 6 (i) shows a state in which the tongue 25 is pulled out from the packaging material 2. Then, as shown in (j) of FIG. 6, the packaging object wrapped in the packaging material 2 is conveyed to the next process by the conveyor 26.

  According to the apparatus of the present invention, as described above, the contact point between the lowermost packaging material 2 in the stacking direction and the other packaging material 2 laminated on the lowermost packaging material 2 is determined. The lowermost packaging material 2 is peeled off from the bundle 3 of the packaging materials 2 so as to be moved. Therefore, it can be reliably taken out from the stacker 1 one by one. Moreover, since the opening 2A of the packaging material 2 taken out in this way is adsorbed by the second suction pad 20 to form a wrinkle, air can easily enter the inside of the packaging material 2 through the wrinkle. Can be opened. As a result, the take-out operation and opening of the packaging material 2 can be performed at high speed and stably.

  FIG. 7 is a top view showing another example of the configuration of the first suction pad 16. The example shown here is an example in which the number of suction holes 19 is reduced as compared with the first suction pad 16 shown in FIG. 5 and the groove portion 18 is formed so as to be offset toward one end side. That is, the suction holes 19 are formed vertically at predetermined intervals from one end side of the first suction pad 16, and the same is performed at regular intervals on the other end side with these suction holes 19 as a base point. A suction hole 19 having a diameter of 5 mm is formed. In the example shown here, 11 pieces are formed on the upper side and the lower side in FIG. Further, two groove portions 18 having a shallow depth measured in the thickness direction of the first suction pad 16 are formed. Each groove portion extends from one end side toward the other end portion, and five suction holes 19 are formed in each groove portion 18. Even with such a configuration, it is possible to obtain the same operations and effects as the above-described example.

  DESCRIPTION OF SYMBOLS 1 ... Stacker, 2 ... Packaging material, 16 ... 1st adsorption pad.

Claims (3)

In the packaging material take-out device configured to accommodate packaging materials in a stacked state in the stacker and to take out the packaging material from the lower side of the stacker,
While being moved up and down toward the lower side of the stacker, it is pressed against the lowermost packaging material among the packaging materials stored in a stacked state in the stacker and the lowermost packaging material is adsorbed A first suction pad that is
The first suction pad is inclined with respect to the lower surface of the stacked packaging material when the lowermost packaging material is lowered while being adsorbed, and the lower surface of the packaging material The lowermost packaging material adsorbed by the first suction pad and the other packaging material laminated on the lowermost packaging material by being lowered in the inclined state. The packaging material take-out device is configured to separate the lowermost packaging material from the other packaging material while moving the contact point from one end to the other end. .   A second suction pad that is connected to the first suction pad and constitutes a work table is provided below the stacker, and the second suction pad is removed from the stacker by the first suction pad on the work table. The opening is arranged at a position corresponding to the opening of the lowermost packaging material and the opening is sucked, and a plurality of irregularities are formed on the surface of the second suction pad. The packaging material take-out device according to claim 1, wherein wrinkles are formed in the opening by the unevenness.   A third suction pad is provided above the second suction pad, and the third suction pad is configured to approach and separate from the second suction pad, and the lowermost packaging material on the work table. When the third suction pad is brought close to the second suction pad while the second suction pad is being sucked, the third suction pad is brought into contact with the opening side of the lowermost packaging material, and the third suction pad is brought into contact with the second suction pad. 3. The packaging material according to claim 2, wherein the opening is opened by adsorbing the opening side to the suction pad and separating the third suction pad from the second suction pad. 4. Take-out device.

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