JP5064304B2 - Opening device for folding cartons - Google Patents

Description

  The present invention relates to a folding carton opening molding apparatus for opening a carton taken out from a stacking portion into a cylindrical shape from a flat folded state.

Taking out flat folded cartons one by one from the magazine, opening them into a cylindrical shape, holding the cartons in the open state, and transporting them downstream, packing in small boxes to store articles in the cartons The machine is known. The carton folded flat is given a crease, but when opening the folded carton into a tubular shape, the carton is restored to its original flat state. Opening may not be performed well due to force, and as a response to such problems, a device that opens the folded carton and then reversely folds to remove the crease in the carton Has been proposed (see, for example, Patent Documents 1 and 2).
Japanese Utility Model Publication No. 62-4495 Japanese Patent Publication No. 5-24015

  In the apparatus disclosed in Patent Document 1, a flat carton taken out from a carton hopper is pushed from behind by a conveyor, and a carton once opened by abutting a front corner of the carton against a stopper is arranged downstream. Reverse folding is performed by guiding the clearance between the installed rails. When opening the carton, when the carton is brought into contact with the stopper, the upper and lower panels of the carton are not held. is there. Also, in the case of cartons made of easily damaged materials such as cardboard, there is also a problem that when the carton in the reverse folded state is pushed downstream in the passage between the rails, it rubs against the rails and gets scratched. Is done.

  The apparatus disclosed in Japanese Patent Laid-Open No. 2004-228688 is a case where a carton once opened by abutting a rear corner of a flat carton adsorbed and taken out from a magazine with a lower guide when the carton is opened by an upper protruding conveyor. The carton is folded backward by passing through the gap. Thus, when the carton is opened before reverse folding, the carton that is in contact with the guide is opened because the rear corner of the carton is in contact with the guide while the top panel of the carton is adsorbed. It is pointed out that there is a problem that it will be bent without any problem, or the carton will be detached from the adsorption part. Further, when the carton taken out on the conveyor is reversely folded on the conveyor with protrusions, the bottom panel of the carton is pushed while being rubbed against the lower guide, so that the carton is rubbed and scratched as in Patent Document 1. The difficulty is pointed out.

  In view of the above-described problems inherent in the prior art, the present invention has been proposed to suitably solve these problems, and provides a folding carton opening molding apparatus that can reliably and satisfactorily mold a carton. With the goal.

In order to overcome the above-mentioned problems and achieve an intended object, an apparatus for forming an opening of a folding carton according to claim 1 of the present application comprises:
Take-out means for sucking and holding the top panel of the carton folded flat and taking it out from the accumulating part, and transferring it to the lower raising part,
Opening means for sucking and receiving the bottom panel of the carton sucked and held by the picking means in the hoisting part, and opening the carton;
A pair of endlessly provided with the abutment member, the abutment portion being arranged on the upstream side, wherein the bottom panel is placed when the carton is opened at the abutment portion and the rear end abuts and supports when the carton is transported A conveyor belt consisting of a belt;
It is arranged above the conveying surface of the endless belt, moves from the downstream side in the conveying direction of the conveying conveyor toward the upstream side, and the carton opened in the hoisting part is folded in a substantially flat shape toward the upstream side. A reverse folding means for folding ,
The reverse folding means is configured to be capable of reciprocating so as to move toward the downstream side in the transport direction along with the transport of the reversely folded carton after moving toward the upstream side in the transport direction. .

  The gist of the invention according to claim 2 is that the reverse folding means includes a movable body in which a contact portion with the carton rolls and contacts when the carton is folded.

The gist of the invention according to claim 3 is that the movement of the reverse folding means upstream and downstream in the transport direction is horizontal reciprocation .

  The gist of the invention according to claim 4 is that the conveying path in the conveying conveyor until the carton in the reversely folded state is opened normally includes a guide member that supports the flap excluding the top panel from above. .

In the invention according to claim 5, a carton conveyor connected to the downstream side of the transport conveyor and configured to be able to adjust the interval between the support members before and after the opened carton is supported and transported;
In the front box part where the folded carton is delivered from the conveying conveyor to the carton conveyor, the rear side panel of the carton comes into contact with the reversed folded carton whose front end in the conveying direction is supported by the support member from the upstream side. And a standing means for standing up.

  According to the invention which concerns on Claim 1, it can carry out reverse folding reliably in the state where each panel of the folded carton opened favorably without folding inward. In addition, the carton can be reversely folded into a substantially flat shape to reduce the restoring force of the carton, and the opening state can be satisfactorily maintained in the conveying process until the carton is sealed on the downstream side. Furthermore, since the cartons taken out from the stacking section are delivered to the conveyor and opened in the box, the conveyor line length can be shortened.

According to the invention of claim 2, when the carton is reverse-folded by the reverse folding means, even a carton made of a material that is easily damaged such as cardboard is not damaged.
According to the invention of claim 3, the cycle until the next carton is delivered to the transport conveyor by the reverse folding means that reversely folds the carton moves downstream in the transport direction as the carton moves downstream. Time can be shortened.
According to invention of Claim 4, it can convey, without damaging the carton after reverse folding.
According to the invention of claim 5, the conveyor and the carton conveyor can be installed on the same horizontal line to open the reversely folded carton. Moreover, the restoring force of the reversely folded carton is weak, and the carton supported by the support member of the carton conveyor can be maintained in an open state and reliably conveyed. Furthermore, by changing the position of the support member that supports the front end of the carton, it is possible to easily cope with different sized cartons without changing the mechanical configuration.

  Next, a folding carton opening forming apparatus according to the present invention will be described below with reference to the accompanying drawings by way of preferred embodiments.

  In the carton 10 to be handled by the aperture forming apparatus according to the embodiment, a rectangular top surface panel 10a, a bottom panel 10b, and a pair of side panels 10c and 10d are connected to each other, and a body portion is formed. Flaps 10e are foldably formed at both ends of the panels 10a, 10b, 10c, and 10d on the opening side (see FIGS. 2 and 3). In addition, the top panel 10a and the bottom panel 10b in the embodiment are designated by the vertical relationship when transported by the transport conveyor 14 described later.

  FIG. 1 is a schematic view showing the overall configuration of a folding carton opening forming apparatus according to an embodiment, in which the carton 10 folded flat is aligned in a state in which the opening side stands in a posture facing sideways. A magazine (stacking unit) 12 for stacking is provided, and the cartons 10 are stacked in the magazine 12 in a state where the top panel 10a is taken out to face the outlet. Outside the take-out port of the magazine 12, take-out means 16 is provided for taking out the cartons 10 from the magazine 12 one by one and transferring them to the raising portion (described later) of the conveyor 14 disposed below. . The take-out means 16 includes a plurality of suction cups 18a, and has a take-out portion 18 to which a required operation (an operation in which the suction cup 18a moves along a locus indicated by a one-dot chain line in FIG. 1) is provided by a rotation mechanism (not shown). The top panel 10a of the carton 10 is sucked from the magazine 12 by each suction cup 18a and is taken out one by one. Further, the suction cup 18 a that sucks and holds the top panel 10 a of the carton 10 has a suction hole facing downward at the delivery position close to the upper side of the transport conveyor 14, and the bottom panel 10 b of the carton 10 is transported by the transport conveyor 14. The movement trajectory of the suction cup 18a of the take-out portion 18 that is operated by the rotation mechanism is set so as to oppose the.

  As shown in FIG. 2, the conveyor 14 located below the take-out means 16 includes a pair of endless belts 20 and 20 spaced apart in the width direction, and each endless belt 20 is contacted at a predetermined interval in the running direction. A contact member 20a is provided. In the conveyor 14, the bottom panel 10b of the carton 10 adsorbed by the opening means 22 to be described later is placed on the endless belts 20 and 20, and the rear ends thereof are in contact with and supported by the contact members 20a and 20a. The carton 10 is transported downstream by intermittent travel of the endless belts 20 and 20.

  A hoisting portion is provided on the upstream side of the conveying conveyor 14, and the hoisting portion 22 is provided with an opening means 22 having a suction hole of the suction cup 22 a facing upward between the pair of endless belts 20, 20. Arranged freely. The opening means 22 is configured such that the upper end of the suction cup 22a is substantially the same as or slightly below the transport surface of the transport conveyor 14, and the carton 10 sucked and held by the take-out means 16 arrives at the lifting portion. In addition, it is actuated by a driving means (not shown) so as to move up and down between the suction positions where it can be brought into contact with the bottom panel 10b of the carton 10 (see FIG. 3).

  A reverse folding means 24 that reversely folds the carton 10 opened by the opening means 22 is disposed in the raising portion of the conveyor 14. As shown in FIG. 2, the reverse folding means 24 includes a plurality of freely rotating guide rollers (movable bodies) 28a, 28b between a pair of side plates 26, 26 spaced apart in the width direction at a predetermined interval in the carton conveying direction. It is installed side by side. The reverse folding means 24 is moved from the standby position downstream from the hoisting part by the driving means (not shown) toward the upstream side, and the guide rollers 28a and 28b move the carton 10 to the side panel 10c and the top panel 10a. Are pushed against the endless belts 20 and 20 of the conveyor 14 and are reciprocated horizontally so as to be reversely folded to the opposite side of the folded state in the magazine 12 to form a substantially flat shape (see FIG. 1). As shown in FIG. 3, the most upstream guide roller 28a is disposed between the side plates 26 and 26 so as to be positioned above the other guide rollers 28b at the standby position of the reverse folding means 24, and the carton 10 is At the time of reverse folding, the side panel 10c is configured to be surely bent downward by coming into contact with the upper part of the side panel 10c located on the front side in the transport direction in the opened carton 10. In the following description, the side panel 10c positioned on the front side in the transport direction is referred to as a front side panel, and the side panel 10d positioned on the rear side in the transport direction is referred to as a rear side panel.

  The lower end levels of the guide rollers 28b arranged in parallel on the downstream side of the uppermost guide roller 28a in the reverse folding means 24 coincide with each other, and the lower ends of these downstream guide rollers 28b and the endless belts 20, The spacing distance from the upper surface 20 is set to be approximately the same or slightly larger than the thickness of the folding carton 10, and the carton 10 sandwiched between the reverse folding means 24 and the conveyor 14 is substantially flat. Wrapped. Further, the reverse folding means 24 is driven by a drive motor such as a servo motor, and after moving toward the upstream side in the transport direction, the transport speed of the carton 10 is transported along with the transport of the carton 10 by the transport conveyor 14. And move toward the downstream side in the transport direction at a corresponding speed.

  On the downstream side of the reverse folding means 24, flaps 10 e, 10 e extending left and right from the respective panels 10 a, 10 c of the carton 10 when the reversely folded carton 10 is transported downstream by the transport conveyor 14. A pair of first guide members 30, 30 capable of supporting the upper surface are disposed apart from each other in the width direction. Since the carton 10 is slightly opened by the restoring force after being reversely folded, the first guide members 30 and 30 have a height that can support the upper surface of the carton 10 with light contact corresponding to the swelling of the carton 10. The corresponding position is set so as to extend from the most downstream guide roller 28b at the standby position of the reverse folding means 24 to the normal box portion of the carton 10 described later. Accordingly, the reversely folded carton 10 is transported by the transport conveyor 14 without rubbing against a support member such as a guide, with the upper surface portion of the top panel 10a being in an open state. Thus, since the reversely folded carton 10 is not greatly opened due to the restoring force, the carton 10 conveyed to the normal box portion reopened after reverse folding is brought into contact with the conveyor 14. The first guide members 30 and 30 are supported from above by light contact so as not to be detached from the member 20a. Accordingly, even when the flaps 10e and 10e are supported and guided by the first guide members 30 and 30 as in the present embodiment, the flaps 10e and 10e extending to the left and right of the top panel 10a are directed downward. It won't bend towards you.

  A carton conveyor 32 is connected to the downstream side of the conveyor 14. As shown in FIG. 2, the carton conveyor 32 includes a first belt conveyor 36 including a pair of first endless belts 34, 34 that are spaced apart in the width direction, and a pair of first endless belts 34, 34 that are positioned outside the first endless belts 34, 34. And a second belt conveyor 40 including two endless belts 38 and 38. Each first endless belt 34 is provided with a plurality of first support members 34a spaced apart by a predetermined interval in the traveling direction, and each second endless belt 38 has a plurality of second end members spaced at a predetermined interval in the traveling direction. A support member 38a is provided. Then, the front end of the opened carton 10 delivered from the conveyor 14 and opened by the standing means 42 described later is supported by the first support members 34a, 34a, and the rear end of the carton 10 is the second end. In a state of being supported by the support members 38a and 38a (see FIG. 2), the carton 10 is configured to be conveyed downstream as the first and second belt conveyors 36 and 40 are intermittently traveled.

  The first belt conveyor 36 and the second belt conveyor 40 are configured to independently circulate by separate drive motors (not shown), and the first belt conveyor 36 and the second belt conveyor 40 are paired in front and rear according to the size of the carton 10. The mutual distance between the support member 34a and the second support member 38a can be adjusted.

  The forward box portion set at the connection portion between the transport conveyor 14 and the carton conveyor 32 abuts the carton 10 in the reverse folded state delivered from the transport conveyor 14 to the carton conveyor 32 from the upstream side in the transport direction. Thus, standing means 42 for opening the carton 10 forward is provided. As shown in FIG. 4, the standing means 42 includes a standing member 46 that is rotatably disposed coaxially with a pulley around which the endless belts 34 and 38 are wound at the conveyance start end of the carton conveyor 32. When the shaft 44 is rotated by a drive motor such as a servo motor (not shown), the upright member 46 is rotated from the lower side to the upper side of the conveying surface of the carton conveyor 32, so that the upright member 46 is in a reverse folded state. The rear side panel 10d is brought into contact with the carton 10 and is opened up to a position that is in a vertical posture with respect to the transport surface of the carton conveyor 32. The upright member 46 is temporarily stopped when the rear side panel 10d is rotated to the upright position where the rear side panel 10d is in the vertical posture, and the carton is supported by the first support member 34a supporting the front end of the opened carton 10. 10 is supported from the front and back, and the rotation of the carton conveyor 32 is resumed as the carton conveyor 32 subsequently travels. The second support member 38a reaches the rear of the carton 10 and is opened by the two support members 34a and 38a. The drive motor is rotationally controlled so as to rotate to the lower side of the conveying surface at a predetermined timing when it is conveyed toward the downstream side of the carton conveyor 32 while supporting it.

  Above the carton conveyor 32, as shown in FIG. 1, a pair of second guide members 48 capable of supporting the upper surface of the top panel 10a of the opened carton 10 are disposed spaced apart in the width direction. Yes.

  As shown in FIG. 2, an article supply conveyor 52 that conveys the articles 50 at a predetermined interval is arranged in parallel to the sides of the conveyor 14 and the carton conveyor 32, and the articles 50 of the article supply conveyor 52 are in the pushing position. Then, it is pushed by pushing means (not shown) toward the opening of the carton 10 supported by the carton conveyor 32. Further, flap folding means, sealing means, etc. (not shown) are arranged downstream of the pushing position of the article 50 in the carton conveyor 32, and the carton 10 containing the article 50 is conveyed downstream by the carton conveyor 32. On the way, the flaps 10e and 10e are folded and sealed by each means.

(Effects of Example)
Next, an operation of the folding carton opening forming apparatus according to the above-described embodiment will be described.

  The top panel 10a of the leading carton 10 that is accumulated in the magazine 12 and faces the take-out port is sucked and held by the suction cup 18a of the take-out means 16, and the suction hole of the suction cup 18a faces downward as shown in FIG. By moving downward while changing the posture, the carton 10 taken out from the magazine 12 is transferred to the lower hoisting portion. The suction cup 22a of the opening means 22 provided in the hoisting portion is on standby for the carton 10 that is sucked and held by the suction cup 18a and the bottom panel 10b has arrived at the delivery position facing the transport surface of the transport conveyor 14. The bottom panel 10b is sucked and held by the suction cup 22a.

  The suction cup 22a of the opening means 22 that has received the carton 10 from the suction cup 18a of the take-out means 16 descends with the bottom panel 10b of the flat carton 10 being sucked and held as shown in FIG. Corresponding to the timing when the carton 10 is delivered from the suction cup 18a of the take-out means 16 to the suction cup 22a of the opening means 22, the negative pressure of the suction cup 18a of the take-out means 16 is released.

  As the suction cup 22a of the opening means 22 is lowered to the standby position, the front side panel 10c of the carton 10 is abutted and guided by the most upstream guide roller 28a of the reverse folding means 24 facing the standby position. The carton 10 is opened in a cylindrical shape at the raising portion (see FIG. 3). When the front side panel 10c is pushed up and raised by the guide roller 28a, the guide roller 28a rolls on the surface of the front side panel 10c, so that the front side panel 10c is not rubbed and damaged by the guide roller 28a. The carton 10 is reliably opened.

  When the suction cup 22a of the opening means 22 is lowered to the standby position, the bottom panel 10b of the carton 10 sucked and held by the suction cup 22a is placed on the transport surface of the endless belts 20 and 20 in the transport conveyor 14. Is done. The reverse folding means 24 moves horizontally from the standby position toward the upstream side of the transport conveyor 14 with respect to the open carton 10 placed and held on the transport surface of the transport conveyor 14, thereby The side panel 10c is pushed downward by the guide rollers 28a, 28b of the reverse folding means 24 and bent downward, and the top panel 10a of the carton 10 is pushed by the guide rollers 28b of the reverse folding means 24 so that the carton 10 is substantially flat. (Refer to the two-dot chain line in FIG. 1). At this time, since the bottom panel 10b of the carton 10 is sucked and held by the suction cup 22a, the carton 10 is reliably folded back without the bottom panel 10b being displaced. Further, since the reverse folding means 24 moves above the top panel 10a and the front side panel 10c by the rolling of the guide rollers 28a, 28b, the panels 10a, 10c of the carton 10 are rubbed and scratched by the reverse folding means 24. It won't stick. Furthermore, since the carton 10 can be reverse-folded at the opening portion immediately below the position where the carton 10 is delivered from the take-out means 16 to the opening means 22, a compact device with a short conveyor line length can be obtained. can do.

  In accordance with the timing at which the reverse folding means 24 moves to the moving end toward the upstream side of the transport conveyor 14, the suction cup 22a is released from the negative pressure, and the suction of the bottom panel 10b is completed. As the car travels intermittently, the carton 10 in the reversely folded state is conveyed downstream by the abutting members 20a and 20a of the endless belts 20 and 20 being supported at the rear ends. At this time, the reverse folding means 24 also moves toward the downstream side of the transport conveyor 14 and reaches the standby position, so that the next carton 10 can be delivered from the take-out means 16 to the transport conveyor 14. The cycle time can be shortened. Further, the reversely folded carton 10 is placed on the endless belts 20 and 20 of the transport conveyor 14 and the rear ends thereof are in contact with and supported by the contact members 20a and 20a. It is conveyed by intermittent travel. The reversely folded carton 10 is transported by the transport conveyor 14 and passes between the transport conveyor 14 and the reverse folding means 24. The reversely folded cartons 10 are placed on the endless belts 20 and 20 and are reliably conveyed at predetermined intervals, and the guide rollers 28a and 28b of the reverse folding means 24 roll as the cartons 10 move. The carton 10 is not damaged by the reverse folding means 24.

  Then, the carton 10 in the reverse folding position is conveyed downstream by the conveyor 14 in a state where the flaps 10e, 10e are supported by the first guide members 30, 30. At this time, the carton 10 is reverse-folded by the reverse folding means 24 until the top panel 10a contacts the bottom panel 10b, so that the restoring force to return to the original shape is weakened. Even when supported by the first guide members 30 and 30, the carton 10 is guided in a light contact state with the first guide members 30 and 30, and at this time, the carton 10 is not damaged, and the flaps 10e and 10e There is no such thing as bending down.

  The carton 10 transported by the transport conveyor 14 arrives at the normal lifting box and is delivered to the carton conveyor 32, and the front end of the carton 10 is supported by the first support members 34a, 34a of the first belt conveyor 36. At the timing, the upright member 46 of the upright means 42 is rotated from the lower side of the conveying surface to the upright position, so that the upright member 46 comes into contact with the reversely folded carton 10 from the upstream side and the rear side panel 10d is vertical. The carton 10 stands up to a posture and opens in a cylindrical shape (see FIG. 4). In this case, since the front end of the carton 10 is supported by the first support members 34a and 34a, the carton 10 is reliably opened without being displaced. Further, since the restoring force of the carton 10 is weakened by reverse folding, the force required for raising the rear side panel 10d by the standing member 46 is small, and the rear side panel 10d is damaged by the standing member 46. It is suppressed. Moreover, since the cartons 10 in the reversely folded state are normally opened by the standing means 42 provided in the forward raising unit, the conveyor 14 and the carton conveyor 32 can be installed on the same horizontal line, and the cartons 10 are in the reverse folded state. It is not necessary to provide the required height difference between the conveyors in order to open the carton 10 in the forward direction.

  The carton conveyor 32 runs intermittently at a timing after the upright member 46 of the upright means 42 is temporarily stopped at the upright position and the carton 10 opened by the upright member 46 and the first support member 34a is supported from the front and rear. As a result, the second support member 38a reaches the rear part of the carton 10, supports the front and rear of the carton 10 opened by the support members 34a and 38a, and conveys it downstream. Further, the standing member 46 is temporarily stopped and then rotated while supporting the rear portion of the carton 10 with the intermittent running of the carton conveyor 32, and is supported from both the front and rear by the support members 34a and 38a. The carton 10 is transported to the downstream side and rotated to the lower side of the transport surface at a predetermined timing when it reaches a position where it does not interfere with the upright member 46. As described above, since the restoring force of the carton 10 is weakened by reverse folding, the carton 10 supported by the two support members 34a and 38a is deformed so that the front and rear side panels 10c and 10d are tilted by the restoring force. There is no such a thing, and it can convey reliably, maintaining an open state. When changing the size of the carton 10, the first belt conveyor 36 and the second belt conveyor 40 of the carton conveyor 32 are independently driven to drive the first support member 34a and the second support member 38a. This can be dealt with by changing the mutual interval. That is, it is possible to cope with the size change of the carton 10 without changing the mechanical configuration such as replacing the endless belt itself or changing the arrangement position of the support member with respect to the endless belt. Further, since the standing means 42 is also driven separately from the carton conveyor 32, when the size of the carton 10 is changed, it can be easily handled by changing the timing of turning from the lower side of the conveying surface to the standing position.

  In the carton 10 conveyed by the carton conveyor 32, the top panel 10a is guided and supported by the second guide members 48, 48, and the carton 10 is prevented from being deformed during conveyance. At this time, the top panel 10a is not strongly pressed against the second guide members 48, 48 by the restoring force, and is in a light contact state, so that damage to the top panel 10a is suppressed.

(Example of change)
The present application is not limited to the configuration of the above-described embodiment, and other configurations can be appropriately employed.
1. In the embodiment, the case where the carton 10 is opened by moving the opening means 22 away from the take-out means 16 has been described. However, the opening means 22 is fixedly arranged at the standby position, and the opening means 22 facing the standby position is arranged. It is possible to adopt a configuration in which the carton 10 is transferred by the take-out means 16 to a position where the bottom panel 10b can be adsorbed by the suction cup 22a, and then the carton 10 is opened by raising the take-out means 16 and releasing the suction in a timely manner. .
2. In the embodiment, the case where the movable body of the reverse folding means 24 is configured by a plurality of guide rollers 28a and 28b arranged in parallel in the conveyance direction has been described, but a plurality of short rollers are provided for each axis arranged in parallel in the conveyance direction. An endless belt that can be freely rotated or can freely run can be used. As a movable body of the reverse folding means 24, it comes into rolling contact with the movement of the carton 10 while in contact with the carton 10. Anything is acceptable. Further, the movable body may be driven by a driving means such as a motor so as to make rolling contact according to the movement of the carton 10 in contact.
3. In the embodiment, the reverse folding means 24 includes a movable body that is in rolling contact with the movement of the carton 10 in contact with the carton 10. However, in the case of the carton 10 made of a material that is not easily damaged, the carton It is possible to employ a configuration in which the abutting portion with 10 does not roll and contact. That is, depending on the material of the carton 10, it is possible to select a configuration in which the contact portion with the carton 10 is in rolling contact and a configuration in which the carton 10 is not in rolling contact.
4). In the embodiment, the carton conveyor 32 has been described as having the endless belts 34, 38 provided with the support members 34a, 38a. However, the transport member on which the carton 10 is placed, such as a roller conveyor or a slat conveyor, rolls. By moving, various configurations that can convey the carton 10 without rubbing against the conveying member can be adopted.
5. In the embodiment, the standing means 42 that opens the carton 10 in the reverse folded state has been described as being configured to rotate with its rotation fulcrum provided below the transport surface of the carton conveyor 32. A rotation fulcrum is provided above the conveying surface, and the configuration in which the carton 10 is opened by rotating from the standby position allowing the passage of the carton 10 downward to the standing position, and the standing member 46 of the standing means 42 are rotated. Instead of moving, various other configurations such as a configuration that swings between a standby position that allows the carton 10 to pass and a standing position may be employed.

It is a schematic side view which shows the whole opening shaping | molding apparatus of the folding carton which concerns on an Example. It is a schematic plan view which shows each conveyor in the opening molding apparatus which concerns on an Example. It is a schematic side view which shows the reverse folding means which concerns on an Example. It is a schematic side view which shows the standing means based on an Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Carton, 10a Top panel, 10b Bottom panel 10d Rear side panel (side panel), 12 Magazine (stacking part), 14 Conveyor 16 Take-out means, 20 Endless belt, 20a Contact member, 23 Opening means 24 Reverse folding means , 28a, 28b Guide roller (movable body), 30 First guide member 32 Carton conveyor, 34a First support member, 38a Second support member 42 Standing means

Claims (5)

An extraction means (16) for sucking and holding the top panel (10a) of the carton (10) folded flat and taking it out from the accumulating part (12) and transferring it to the lower raising part,
Opening means (22) for opening the carton (10) by sucking and receiving the bottom panel (10b) of the carton (10) sucked and held by the picking means (16) in the hoisting part,
The hoisting part is arranged on the upstream side, and the bottom panel (10b) is placed when the carton (10) is opened at the hoisting part, and the rear end is abutted and supported when the carton (10) is conveyed. A transport conveyor (14) composed of a pair of endless belts (20, 20) provided with contact members (20a);
A carton (10) disposed above the conveying surface of the endless belt (20, 20), moved from the downstream side in the conveying direction of the conveying conveyor (14) toward the upstream side, and opened in the hoisting portion. And a reverse folding means (24) for folding in a substantially flat shape toward the upstream side ,
The reverse folding means (24) moves reciprocally so that the upper part of the carton (10) moves toward the downstream side in the transport direction along with the transport of the reverse folded carton (10) after moving toward the upstream side in the transport direction. An opening forming apparatus for a folding carton, characterized in that it can be configured .   2. The folding carton opening forming apparatus according to claim 1, wherein the reverse folding means (24) includes a movable body (28a, 28b) in which a contact portion with the carton (10) rolls and contacts when the carton is folded. The folding carton opening forming apparatus according to claim 1 or 2 , wherein the reverse folding means (24) moves upstream and downstream in the conveying direction as a horizontal reciprocating movement .   A guide member (30) for supporting the flap (10e) excluding the top panel (10a) from above in the transport path of the transport conveyor (14) until the carton (10) in the reverse folded state is opened forward. The opening shaping | molding apparatus of the folding carton as described in any one of Claims 1-3 provided with these. A carton conveyor (32) connected to the downstream side of the transport conveyor (14) and configured to be able to adjust the interval between the front and rear support members (34a, 38a) for supporting and transporting the opened carton (10);
In the forward-facing box where the reversely folded carton (10) is delivered from the transport conveyor (14) to the carton conveyor (32), the reversely folded carton whose front end in the transport direction is supported by the support member (34a). 5. Folding carton opening molding according to any one of claims 1 to 4, further comprising erecting means (42) for abutting (10) from the upstream side to erect the rear side panel (10d) of the carton (10). apparatus.

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