JPH0563363B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an interior bag folding device for folding interior bags used in containers.

[Conventional technology]

For example, items that come into direct contact with foodstuffs, such as crowns, are wrapped in interior bags for dust-proofing, moisture-proofing, etc., and then transported in containers for transportation.

Conventionally, in this type of field, a transport container with an interior bag inserted therein has been filled with objects to be transported, such as a crown, and the interior bag has been folded manually to seal the transport container.

[Problem that the invention seeks to solve]

However, since the work of inserting the inner bag and the work of folding the inner bag require manpower, it has not been possible to make the entire container filling line for transported objects unmanned.

The present invention was devised in view of the above circumstances, and its purpose is to make the entire container filling line for transported goods unmanned by automatically folding the inner bag inside the transport container. It is an object of the present invention to provide an interior bag folding device that can be used for folding bags.

[Means for solving problems]

In order to achieve the above object, there is provided an interior bag folding device for folding an open upper part of an interior bag housed in a box-like container having two pairs of opposing flaps at the upper part, the interior bag folding device comprising: It has a mechanism for positioning the box-shaped container at a folding position for folding the bag, and a pair of vertical levers that swing in opposite directions in a vertical plane about the base end, and the positioning mechanism allows the box-shaped container to be moved to a folding position for folding the bag. is positioned at the folding position, the tips of the pair of vertical levers engage with the inside of the side wall of the interior bag on the side of one of the two pairs of flaps, causing the vertical lever to swing. It has a drawer mechanism that pulls out the upper part of the interior bag outwardly as the bag moves, and a pair of horizontal levers that swing in opposite directions in a horizontal plane centering on the base end. When the upper part of the interior bag is pulled out outward, the tips of the pair of horizontal levers are applied to the outer or inner surface of the side wall of the interior bag from a direction substantially perpendicular to the pulling direction, as the horizontal levers swing. It has a folding mechanism that folds the upper part of the interior bag inward by pressing the bag against the bag and sliding it on the outer surface or inner surface thereof, and a pad that moves up and down, and the bag is folded inward by the folding mechanism. a pressing mechanism that presses the upper part of the interior bag downward by lowering the pad; and a pair of arms that swing in opposite directions in a vertical plane centering on the base end, the pressing mechanism a folding mechanism in which the pair of arms of the side wall portions of the interior bag that are each pulled out onto the pair of flaps by the pull-out mechanism bend inward by the swing thereof while the upper portion is being pressed by the pull-out mechanism; It is characterized by having the following.

[Effect]

In the interior bag folding device according to the present invention, when the box-shaped container into which the interior bag is inserted is positioned by the positioning mechanism at the folding position for folding the interior bag during transportation, the pull-out mechanism is activated. Then, the tips of a pair of vertical levers that swing in opposite directions in a vertical plane centering on the base end of the inner bag located on the flap side of one of the two pairs of flaps of the box-shaped container. Each engages with the inside of the side wall, and as the vertical lever swings, the upper part of the interior bag is pulled outward, and then the folding mechanism is activated to move the bag opposite each other in the vertical plane centering on the proximal end. The tips of the pair of horizontal levers that swing in the direction are attached to the outer or inner surface of the inner bag side wall when the upper part of the inner bag is pulled outward by the pull-out mechanism. At the same time, the upper part of the interior bag is folded inward by pressing from a direction substantially perpendicular to the drawing direction and sliding on the outer or inner surface of the bag, and then the pressing mechanism is activated to lower the pad. The folding mechanism presses the upper part of the interior bag folded inwardly downward, and then the folding mechanism operates to rotate the bag in opposite directions in a vertical plane centering on the proximal end. A pair of swinging arms bends inward side wall portions of the interior bag each pulled out onto the pair of flaps by the pull-out mechanism while the upper portion is pressed by the pressing mechanism.

〔Example〕

Embodiments of the interior bag folding device according to the present invention will be described below with reference to FIGS. 1 to 9.

FIG. 1 is a front view of the interior bag folding device, and in the same figure, reference numeral 2 is a driving roller conveyor;
At a box stop position A of the drive roller conveyor 2, a lifting platform 8 is provided for lifting the transported box 6 containing the interior bags 4. This lifting platform 8 is composed of three gate-shaped frames 10, and the gate-shaped frames 10 pass through the gap between the rollers 3 of the driving roller conveyor 2, and the box cylinder 12
It is designed to move up and down.

A stopper 14 for stopping the box 6 is provided at the downstream end of the elevating table 8, and as with the elevating table 8, the stopper 14 passes through the gap between the rollers 3 and is operated by a stopper cylinder 16. It is designed to move up and down.

The above configuration constitutes a positioning mechanism for the box 6.

Further, above the drive roller 2, a box conveyance path 1 is provided.
A frame 20 is provided so as to straddle the stage 8, and this frame 20 is provided with an upper stage 22 and a lower stage 24. And this upper stage 2
Above the box stop center position A of No. 2, at the surface target position,
Two side walls 4a, 4b of the interior bag 4 inside the box 6
a pair of vertical levers 2 for pulling the top of the
6a and 26b are rotary actuators 30
It is rotatably supported via a and 30b.

The above configuration constitutes the drawer mechanism.

Furthermore, the box stop center position A of the upper stage 22
Above the folded interior bag 4, 2
pad 3 for holding down orthogonal side walls 4c, 4d of
2 is arranged, and is adapted to be moved up and down by a cylinder 34 for the pad.

The above configuration constitutes a pressing mechanism.

On the other hand, a pair of lever slide cylinders 36a and 36b are provided on the upper side of the box stop center position A of the lower stage 24, and rotary actuators 40a and 36b are provided at the tips of the movable parts thereof.
40b, horizontal levers 42a and 42b for folding the one orthogonal side wall 4c are arranged.

The above configuration constitutes the folding mechanism.

Furthermore, the box stopping center position A of the lower stage 24
The two side surfaces 4a of the interior bag 4 are located at the upper surface target position,
A pair of arms 44a, 44b are arranged via rotary auguators 46a, 46b for folding the box 4b simultaneously with the inner flaps 6a, 6b of the box 6.

The above configuration constitutes the bending mechanism.

Next, the operation of the interior bag folding device according to the present invention configured as described above will be explained.

The rollers 3 for the drive roller conveyor 2 are rotated counterclockwise by a drive motor 5 via a drive chain 7. The box 6 into which the interior bag 4 has been inserted is conveyed from the right side in Fig. 1, and its tip comes into contact with the stopper 14, which has been raised by the operation of the stopper cylinder 16, and is stopped (the state shown in Fig. 1). .

Thereafter, pressurized air is supplied from a pressurized air source (not shown) to the lower side of the box cylinder 12 disposed at the bottom of the lifting platform 8, and the lifting platform 8 rises to the position shown in FIG. be stopped. Next, when pressurized air is supplied from the pressurized air source (not shown) to one supply hole (not shown) of the rotary actuators 30a, 30b, the movable parts of the rotary actuators 30a, 30b are The vertical levers 26a, 26b fixed to the vertical levers 26a, 26b rotate in the direction of the arrow in FIG.
The tip of 6b is connected to the upper 2 side walls 4a and 4b of the interior bag 4.
engage with. And two side walls 4a of the interior bag 4,
While pulling 4b outward, press this vertical lever 26.
The rotation of a and 26b further progresses and stops at the position shown in FIGS. 2 and 3. In this state, interior bag 4
The upper parts of the two orthogonal side walls 4c and 4d are inclined inward.

Next, the lever slide cylinder 36
Pressurized air is supplied from a pressurized air source (not shown) above a and 36b, and rotary actuators 40a and 40b and horizontal levers 42a and 42b are fixed to the movable parts of the lever slide cylinders 36a and 36b. descends and stops at the position shown in Figure 4. Here, the horizontal levers 42a and 42b are connected to the bag 4.
This results in pressing down one orthogonal side wall 4c. The plane of the position of the horizontal levers 42a and 42b is shown in FIG.
Indicated by the dotted chain line.

Therefore, pressurized air is supplied to the rotary actuators 40a, 40 from the pressurized air source (not shown).
When supplied to one supply hole (not shown) of b, the rotary actuators 40a, 40b begin to rotate in the direction of the arrow in FIG. A horizontal lever 4 is attached to the movable part of the rotary actuators 40a and 40b.
2a, 42b are fixed, the horizontal levers 42a, 42b can be slid and rotated on one orthogonal side wall 4c of the bag 4 in the direction of the arrow in FIG. Therefore, one orthogonal side wall 4c of the interior bag 4 is folded. As the rotation progresses, these horizontal levers 42a, 42b
reaches A and A', the interior bag 4 and the orthogonal side wall 4
Since d is not folded, the horizontal lever 42
a and 42b enter under the other orthogonal side wall 4d of the interior bag 4, rotate further, and stop at the position shown in FIG. Here, the other orthogonal side walls 4d of the interior bag 4 are folded up.

Next, pressurized air is supplied to the upper side of the pad cylinder 34 from a pressurized air source (not shown), and the pad 32 attached to the movable part of the pad cylinder 34 is lowered and the two of the interior bags 4 are perpendicular to each other. side wall 4
Press c and 4d from above (Figures 7 and 8).

And rotary actuators 40a, 4
When the pressurized air supplied from the pressurized air source (not shown) in 0b is switched from one supply hole to another (not shown), the The horizontal levers 42a and 42b rotate in the direction of the arrow in FIG. 8 and return to the position indicated by the solid line in the figure.

After that, the lever slide cylinder 36a,
When the supply of pressurized air that was being supplied to the lever 36b is switched from the upper side to the lower side, the rotary actuators 40a, 40b and horizontal levers 42a, 42b attached to the movable parts of the lever slide cylinders 36a, 36b will Rise. However, the pads 32 are connected to two orthogonal side walls 4 of the interior bag 4.
c, 4d, these two orthogonal side walls 4
c and 4d remain folded.

Next, one of the pair of rotary actuators 46a, 46b is driven from the pressurized air source (not shown).
When pressurized air is supplied to the supply hole (not shown),
A pair of arms 44a, 44 attached to the movable parts of the rotary actuators 46a, 40b.
b rotates in the direction of the arrow in FIG. 9, and reaches the position indicated by the solid line from the position indicated by the two-dot chain line.

At this time, the two side walls 4a and 4b of the interior bag 4 are connected to the box 6.
It is folded together with the inner flaps 6a and 6b.

When the pressurized air supplied to the pad cylinder 34 is switched from the upper side to the lower side, the pad 32 attached to the movable part of the pad cylinder 34 rises.

After that, the rotary actuators 46a, 4
When the supply of pressurized air that was being supplied to the rotary actuators 6b is switched from one supply hole to another supply hole (not shown), the arms 44a and 44b attached to the movable parts of the rotary actuators 46a and 46b are 9
It rotates in the opposite direction of the arrow in the figure and returns to the position indicated by the two-dot chain line in the same figure. However, at this time, the inner flap 6 of the box 6
2 side walls 4a, 4b of the interior bag 4 along with a, 6b
Since the paper was pressed down by the arms 44a and 44b for a certain period of time, the creases are completely formed and only slightly returned.

Next, the pressurized air supplied to the lower side of the box cylinder 12 is switched to the upper side. Then, the lifting platform 8 attached to the movable part of the box cylinder 12 is lowered, and the boxes 6 are placed on the driving roller conveyor 2.

Furthermore, the pressurized air supplied to the lower side of the stopper cylinder 16 is switched to the upper side. Then, the stopper 14 attached to the movable part of the stopper cylinder 16 is lowered.

Therefore, the roller 3 of this drive roller conveyor 2
is driven by a drive motor 5 through a drive chain 7,
Since the box 6 is rotating counterclockwise, the box 6 is conveyed to the left in FIG. 1, and the box 6 is sealed by a sealing machine (not shown).

〔Effect of the invention〕

As described above, according to the present invention, since the inner bag is automatically folded after being filled with objects to be transported,
It becomes possible to make the entire container filling line for transported objects unmanned.

According to the present invention, the vertical lever of the pull-out mechanism, the horizontal lever of the folding mechanism, the pad of the pressing mechanism, and the arm of the folding mechanism operate in sequence according to the stages of the folding process, and the folded form for each stage is maintained. However, since the interior bag is folded in the next step, folding can be carried out reliably and in an orderly manner.

[Brief explanation of the drawing]

Fig. 1 is a front view of the interior bag folding device according to the present invention, Fig. 2 is a front view showing the operation of the vertical lever, Fig. 3 is a plan view of Fig. 2 seen from above, and Fig. 4 is a horizontal view. Front view showing the lever in the lowered state, No. 5
The figure is a plan view of Fig. 4 seen from above, Fig. 6 is a perspective view showing the state of the bag after the horizontal lever is activated, Fig. 7 is a front view showing the action of the pad, and Fig. 8 is the same as Fig. 7. FIG. 9 is a front view seen from above, showing the operation of the arm. 2... Drive roller conveyor, 4... Interior bag,
4a, 4b... side wall, 4c, 4d... orthogonal side wall,
6... Box, 8... Lifting platform, 14... Stopper,
26... Vertical lever, 32... Pad, 42...
Horizontal lever, 44... arm.

Claims (1)

[Scope of Claims] 1. An interior bag folding device for folding an open upper part of an interior bag housed in a box-like container having two pairs of opposing flaps at the top, the interior bag folding device comprising: a positioning mechanism that positions the box-shaped container at a folding position for folding the bag; and a pair of vertical levers that swing in opposite directions in a vertical plane centering on a base end, the positioning mechanism After the shaped container is positioned at the folded position, the tips of the pair of vertical levers are engaged with the inside of the side wall of the interior bag on the side of one of the two pairs of flaps, and the vertical levers are The bag has a drawer mechanism that pulls out the upper part of the inner bag outwardly as the inner bag swings, and a pair of horizontal levers that swing in opposite directions in a horizontal plane centering on the base end. Therefore, when the upper part of the interior bag is pulled out outward, the tips of the pair of horizontal levers are applied to the outer or inner surface of the side wall of the interior bag from a direction substantially perpendicular to the pulling direction. It has a folding mechanism that folds the upper part of the interior bag inward by pressing against it as it moves and sliding on its outer or inner surface, and a pad that moves up and down, and the pad is folded inward by the folding mechanism. a pressing mechanism that presses the upper part of the interior bag in a state in which the pad is lowered by lowering the pad; and a pair of arms that swing in opposite directions in a vertical plane centering on the base end; While the upper part is being pressed by the pressing mechanism, the pair of arms bends inward by swinging the side wall portions of the interior bag that are each pulled out onto the pair of flaps by the pull-out mechanism. An interior bag folding device characterized by having a folding mechanism and the following.