JPH0733118A - Box-opening device of box-packing machine for commodity - Google Patents

Abstract

PURPOSE:To provide a box-opening device with an extremely simple constitution, which can automatically open a flatly folded box body into a square shape. CONSTITUTION:On right and left, a pair of chains 31 which are moved in one direction, a receiving claw 32 and pushing claw 33 are provided with an interval which corresponds with the width dimension of a box body A under an opened condition. The pushing claw 33 moves upward from one side of a tail sprocket 35 which guides the movement of the chains 31 and tilts, and the flat box body A which is taken out under a hopper 2 is fed between the pushing claw 33 under the tilted condition and the receiving claw 32. Then, a rear part of the box body A, which is prevented from moving forward by the receiving claw 32, is pushed by the rotating motion of the pushing claw 33, and the box body A is opened into a square shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box-opening device for a product boxing machine, which opens a flatly folded box body and packs products therein.

[0002]

2. Description of the Related Art In a product cartoning machine in which a flat folded box is opened in a rectangular shape and products are packed in the box, flat boxes are usually stacked in a hopper and The boxes are taken out one by one from the lower part, and in the process of transporting the boxes in one direction, the boxes are opened to pack the products.

[0003]

By the way, in a conventional product packing machine, a box opening device is provided in the middle of the transfer path of the box conveyed by the box conveying device, and the box is opened by the operation of the box opening device. Because I try to open the body,
There was the inconvenience that the total length of the boxing machine became long.

Further, since the box is opened without being stopped, there is a disadvantage that the configuration of the box opening device is extremely complicated.

An object of the present invention is to provide a product box opening device having an extremely simple structure capable of automatically opening a flat box body taken out from a hopper onto a carrying device.

[0006]

In order to solve the above-mentioned problems, in the present invention, a foldable flat box body is housed in a stacked state with a pair of end plates as front and back, and a hopper inside the hopper. A take-out device that takes out the boxes one by one from the bottom, a table that supports the boxes that are taken out below the hopper, and a box supported by the table that is conveyed in one direction with a pair of end plates as the front and back. The transport device is configured such that the transport device is provided with a pair of left and right chains with a receiving claw and a pushing claw at an interval corresponding to the width dimension of the box body in the open box state, and the front side of the pushing claw. An engaging piece that is engageable with the upper surface of the box body in the opened box state is provided on the upper part, and the engaging claw and the receiving claw that are inclined by passing through one side of the outer circumference of the tail sprocket that guides the movement of the chain. A structure in which the hopper is provided at an upper position. It was adopted.

[0007]

In the box opening device having the above-mentioned structure, the receiving claw moves below the hopper, and the pushing claw is rotated from one side of the outer circumference of the tail sprocket to the upper side. In the meantime, the flat box taken out from the lower part of the hopper is supplied, and by contacting the inclined pushing claw, the box is opened in a parallelogram state, and the pushing claw rotates around the outer circumference of the tail sprocket. The box body is brought into a rectangular open box state by the change of posture from the inclined state to the vertical state.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 and 2 show a product box packing machine.
The product boxing machine includes a box opening device 1, a product transport device 40, and a pushing device 50 that pushes a product B transported by the product transport device 40 into a box A opened by the box opening device 1.

As shown in FIGS. 1 to 3, the box opening device 1
Includes a hopper 2, a take-out device 10 for taking out the flat boxes A stacked in the hopper 2 downward one by one from the lower part of the hopper 12, a table 20 for supporting the boxes A taken out downward, and The transport device 30 transports the box A taken out on the table 20 in one direction along the upper surface of the table.

The box A has a pair of side plates a and a pair of end plates b, and inner flaps c are connected to both ends of the end plates b via fold lines. Further, one of the side plates a is provided with a bottom lid d continuously through a fold line, and the other is provided with an upper lid e continuously through a fold line.

The box A is stored in the hopper 2 in a flatly folded state. At this time, the box A is housed in the hopper 2 so that the pair of end plates b are positioned front and back, and the front and rear are supported by the receiving piece 3 provided in the lower opening of the hopper 2.

In the take-out device 10, a suction foot 11 to which a suction force is applied is provided below the hopper 2, and as the suction foot 11 rises, the suction foot 11 is brought into contact with the box A in the hopper 2 to suck the suction foot 11, and the suction state. And suction foot 1
1 is lowered to take out the box A on the table 20.

In the conveying device 30, the pair of left and right chains 31 which are moved in the direction of the arrow in FIG. 1 are provided with the receiving claws 32 and the pressing claws 33 at intervals corresponding to the width dimension of the box A opened in a rectangular shape. The engaging piece 34 is provided on the front upper part of the pushing claw 33.

The engaging claw 34 is adapted to engage with the upper surface of the box A when the box A is opened in a square shape on the table 20.

When the push claw 33 is rotated from one side of the outer circumference of the tail sprocket 35 for guiding the movement of the chain 31 toward the upper side, the push claw 33 is inclined as shown in FIG. The hopper 2 is provided above the claw 32 and the receiving claw 32.

As shown in FIG. 1 and FIG. 2, the product carrier device 40 is provided with a product support table 41 in parallel to one side of the table 20 of the box opening device 1, and the product support table 4 is provided.
A pair of chains 42 are arranged on both sides of 1, and push plates 43 are attached at equal intervals between the chains 42, and the product B placed on the product support table 41 is moved forward by the movement of the push plates 43 in the arrow direction. It is being transported.

Further, the pushing device 50 is provided with a pair of left and right chains 51 on one side of the product transporting device 40, and a plurality of support pieces 52 are attached to the chains 51 at equal intervals. The push rod 53 is slidably supported, the push rod 53 is moved in the direction of the arrow by the movement of the chain 51, and the protrusion 54 provided on the push rod 53 is guided by the inclined guide plate 55 to move the push rod 53. The product B that is moved in the axial direction and moved along the product support table 41 of the product transport device 40 is placed on the table 20 of the box opening device 1.
I try to push it upwards.

Here, the chain 42 of the product transfer device 40
And the chain 51 of the pushing device 50 is the box opening device 1
The chain 31 is moved in the same direction at the same speed.

The boxing machine shown in the embodiment has the above-mentioned structure, and in the take-out device 10 of the box opening device 1, as shown in FIG. 3, the push claw 33 is rotated upward from one side of the tail sprocket 35. In the tilted state, the pushing claw 3
The box A in the hopper 2 is supplied between the 3 and the receiving claw 32.

Now, when the flatly folded box A is supplied between the inclined pushing claw 33 and the receiving claw 32, the box A is inclined before the table 20 is placed on the table 20. It contacts the front edge of 33. Box A from that state
The box A begins to open due to the further downward movement, and is brought into a parallelogram-shaped open box while being supported by the table 20 (see FIG. 3).

The pushing claw 33 changes its posture from a tilted state to a vertical state as it moves, and the front upper part of the pushing claw 33 moves relative to the rear side edge of the receiving claw 32, and the movement causes the box A to move. Is pressed.

At this time, since the front side of the box A is prevented from moving forward by the receiving claw 32, the pushing claw 33 is provided.
The box A is gradually opened by pressing.

When the box is opened, since the push claw 33 pushes the box A in the inclined state, the portion of the box A pressed by the push claw 33 slides along the front edge of the inclined state of the push claw 33 to push the claw 33. Trying to leave 33. However, since the engaging piece 34 is provided on the upper front side of the push claw 33, the engaging piece 34 prevents the push claw 33 from being separated from each other, and the pressing of the push claw 33 surely opens the box A. .

When the pushing claw 33 is in the vertical state as shown in FIG. 4, the box A is opened into a rectangular box, and the pushing claw 33 and the receiving claw 32 are conveyed forward with the front and back being sandwiched. .

When the box A is moved in one direction, the article carrier 40 conveys the article B in one direction in synchronization with the movement of the box A, and the article B is operated by the pushing device 50. It is pushed into the opened box A.

[0027]

As described above, in the box opening device according to the present invention, the push claws pass through one side of the tail sprocket and are inclined, and the push claws and the receiving claws in the inclined state are flattened. A folded box is supplied, and the box that is prevented from moving forward by the receiving claws due to the movement of the pushing claw that changes its posture from the inclined state to the vertical state is pushed from the rear part, so it is extremely easy With this configuration, the box can be opened, and the outward movement of the box when it is opened is prevented by the engaging piece provided on the push claw, so the box can be opened securely. Can be a box.

Further, since the pushing claw rotates around the tail sprocket and the posture changes from the inclined state to the vertical state, the box body can be opened by a slight movement amount of the pushing claw, so that the entire length of the boxing machine. Can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic view of a product box packing machine in which the box opening device according to the present invention is implemented.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a sectional view showing an open state of the box body.

FIG. 4 is a sectional view showing a state where the box body is completely opened.

[Explanation of symbols]

 A box 2 hopper 10 take-out device 20 table 30 transfer device 31 chain 32 receiving claw 33 pushing claw 34 engaging piece 35 tail sprocket

Claims (1)

[Claims] 1. A hopper in which flatly folded box bodies are stored in a stacked state with a pair of end plates as front and back, a take-out device for taking out the box bodies in the hopper one by one from the lower side, and a lower side of the hopper. And a transport device that transports the box supported by the table in one direction with a pair of end plates in front and back, and the transport device receives the pair of left and right chains. And a pressing claw provided at an interval corresponding to the width dimension of the box body in the opened box state, and an engaging piece capable of engaging with the upper surface of the box body in the opened box state at the front upper part of the pressing claw. And a hopper provided above the position between the pushing claw and the receiving claw that are inclined by passing one side of the outer circumference of the tail sprocket that guides the movement of the chain.