JPH0747291Y2 - Cardboard box cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a cardboard box cutting device.

2. Description of the Related Art In recent years, cardboard boxes have been widely used for convenience of transportation, packing, handling and the like, and are used for transportation of various products. In order to take out such a cardboard box packed with products, the cardboard box must be manually opened to take out the necessary amount or all of the products inside. Therefore,
In order to take out the product from the cardboard box, the cardboard box is cut open with a convenient blade such as a cutter or the joint part of the cardboard box is manually peeled off without damaging the product.

However, cutting a cardboard box with a cutter in this way requires skill and time, and may damage the product, making it difficult to perform by hand. There are problems such as being troublesome.

Therefore, an object of the present invention is to solve the above problems in the related art, and a cardboard box provided with a pair of cutting blades that can accurately cut the corners of the cardboard box without damaging the products inside. To provide a cutting device.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention is directed to the supply conveyor device inwardly in order to cut both upper edge corners of a cardboard box fed by the supply conveyor device. In a cardboard box cutting device having a pair of rotary blades inclined to each other, one rotary blade is supported parallel to it at a certain interval outside thereof, and one upper edge of the cardboard box is provided. The fixed side guide plate that guides the corner and the other rotary blade are supported in parallel with the same at a constant interval, and the position in the transverse direction is adjusted so that the other upper edge corner of the cardboard box is adjusted. A guide plate on a movable side for guiding, and an extension portion extending on the upstream side of the supply conveyor device is provided on the guide plate on the fixed side, and the guide plate on the movable side is provided. On the upstream side of the guide plate, there is provided a pressing member movable in the transverse direction in order to position the cardboard box with the extension of the fixed guide plate.

Action First, with respect to the supplied cardboard box, the cardboard box is laterally pressed by the pressing member between the extension portion of the guide plate on the fixed side and the pressing member movable in the transverse direction, and one upper edge of the cardboard box is pressed. Positioning is performed by bringing the corners into contact with the extensions. Next, one upper edge corner portion is guided as it is by the fixed side guide plate, and at the same time, the other upper edge corner portion is guided by the movable side guide plate whose position in the transverse direction can be adjusted. The fixed side guide plate and the movable side guide plate respectively support the rotary blades in parallel with it and at a certain distance outside the rotary blade, so that the guide plate on both sides guides the cardboard box to be fed. The rotary blades come into contact with the upper edge corners at regular intervals and cut the portions. Thus, the upper edge corner of the cardboard box can be accurately and reliably cut and separated from the cardboard box at regular intervals.

Embodiment Hereinafter, a preferred embodiment of the cutting device for a cardboard box according to the present invention will be described in detail with reference to the drawings.

1 and 2 of the drawings show a first embodiment of a cutting device for a corrugated cardboard box according to the present invention, wherein the cutting device 1 comprises a pair of rotary blades 2 inclined inwardly toward each other. Three
The upper edge corner a of the cardboard box A can be cut. As shown in the figure, this cutting device 1 of the present invention comprises a pair of rotary blades 2 and 3 inclined inward toward each other on the downstream side of a supply conveyor device to be described later, and an outer side of these rotary blades 2 and 3. The upper edge corner portion a of the cardboard box A is provided so as to have a certain interval (outward in the thickness direction of the rotary blades 2 and 3) and to be parallel to the plane of the rotary blades 2 and 3. A pair of movable side guide plates 4 and a fixed side guide plate 5 for guiding. Further, the fixed guide plate 5 is provided with an extension portion 5a extending to the upstream side of the supply conveyor device 12, and the extension portion 5a is provided on the upstream side of the movable guide plate facing the extension portion 5a. A pressing member 22 that is movable in the transverse direction by a positioning device 20 is provided for positioning the cardboard box A between them.

The rotary blades 2 and 3 are provided with the guide plates 4 and 5 so as to be inclined inward at an appropriate angle, and at least one of them, for example, the rotary blade 2 is slidable in a transverse direction with respect to the frame 10. It is movably supported in the transverse direction together with the guide plate 4 via a frame member 6 provided. The movement of the rotary blade 2 and the guide plate 4 in the transverse direction can be performed by the adjusting device 7 provided on the frame member 10. The adjusting device 7 is composed of a handle 8 for adjusting the distance between the rotary blades 2 and 3, and a connecting screw device 9 for connecting the shaft of the handle 8 and the frame member 6 to each other. The frame member 4 can be moved in the transverse direction.

A supply conveyor device 12 for feeding the cardboard box A to the rotary blades 2 and 3 includes a bed 15 supported by a frame 14 and a hook-shaped standing member 16 provided on the chain at a distance. The cardboard box A can be supplied to the cutting blades 2, 3 by pressing the standing member 16. Further, the positioning device 20 for moving the pressing member 20 in the transverse direction includes a width-adjusting handle 23 fixed to the screw shaft, and by rotating the handle 23, a screw to be screwed onto the screw shaft is provided. The pressing member 22 provided can be moved in the transverse direction, and one upper edge corner of the cardboard box A can be brought into contact with the extension 5a of the guide plate 5 on the fixed side.

Next, the operation of the device for cutting a cardboard box of the present invention will be described.

First, when the cardboard box A for cutting the upper edge corner a is placed on the supply conveyor device 12, the cardboard box A is transferred by the upright member 16 and reaches the positioning device 20,
The cardboard box A is pressed in the transverse direction by the pressing member 22 by operating the width-adjusting handle 23, and the cardboard box A is moved until the upper edge corner a of the cardboard box A comes into contact with the extension 5a of the fixed guide plate 5. . When the cardboard box A is accurately positioned in this way, the handle 8 for adjustment is rotated according to the adjustment amount of the width-shifting to correctly determine the positions of the movable rotary blade 2 and the guide plate 4. After that, if the cardboard box A is fed to the correctly positioned rotary blades 2 and 3 by the supply conveyor device 12, the upper edge corner portion a of the cardboard box A is cut by the rotating rotary blades 2 and 3. While being pushed along the guide plates 4 and 5, both upper edge corners a of the cardboard box A are fixed side and movable side guide plates (5, 4) and the rotary blades (3, 2) supported by them. The cardboard box A is surely cut and separated according to a constant interval between the and.

Even when a lifting force is generated on the cardboard box A by cutting with a rotary blade, or when the cardboard box A is bounced by a supply conveyor or the like, the rotary blades are attached to both upper edge corners a of the cardboard box. Since both guide plates (4,5) inclined inwardly in parallel with each other, the cardboard box A can be reliably maintained at a predetermined position because there is a bias from diagonally above to below. In addition, even if both sides and the upper surface of the cardboard box are swollen due to the relationship with the products inside, the bias from the diagonally upper side to the lower side by both guide plates (4,5) is not affected. Therefore, both upper edge corners a of the cardboard box A to be cut can be maintained at accurate positions. Therefore, it is possible to reliably cut and separate the upper edge corner portion corresponding to the constant interval between the rotary blade and the guide plate, so that the damage to the products in the cardboard box that occurs when the cardboard box is cut. It can be avoided.

If the cardboard boxes have the same size, the cardboard boxes that are continuously supplied can be continuously cut by performing the above adjustment first. Also, cardboard box A
When cutting all four corners of the cardboard box A, the corrugated cardboard box A is turned over and the same procedure is repeated again to cut the next upper uncut corner of the cardboard box A.

Next, referring to FIG. 3 of the drawings, there is shown a second embodiment of the cutting device for a cardboard box according to the present invention.
Differs from that of the first embodiment in that an automatic adjusting device 30 for the movable rotary blade 2 and an automatic positioning device 40 for aligning the width of the cardboard box A are provided.

That is, the automatic adjustment device 30 includes a reversible motor 31, a connecting screw device 32 that connects the shaft of the reversible motor 31 and the frame member 6, and a sensing limit switch 33. Therefore, the operation of the reversible motor 31 causes the connecting screw device.
Rotary blade 2 mounted and supported on the frame member 6 via 32
Can be moved in the transverse direction, and when the widthwise guide plate 4 comes into contact with the upper edge corner a of the cardboard box A, the sensing limit switch 33 operates to stop the reversible motor 31. It is like this.

In addition, in order to accurately position the cardboard box A, the automatic positioning device 40 presses the cardboard box A in the transverse direction, and thus the pressing member 41 that positions the cardboard box A in cooperation with the extension portion 5a, A reversible motor 42 for pressing the pressing member 41 via a pressing rod 43 and a sensing limit switch 44 provided on the pressing member 41 are provided. Therefore,
As a result of the reversing motor 42 being operated, the pressing rod 43 is slid in the transverse direction and the pressing member 41 presses the cardboard box A in the transverse direction. Is contacted with the guide plate 5a.

In the cardboard box cutting apparatus 1'of the second embodiment, when the cardboard box A is placed on the supply conveyor device 12 as in the first embodiment, the cardboard box A is raised. When it is transferred by 16 and reaches the automatic positioning device 40, the reversing motor 42 for width adjustment is operated. As a result, the pressing member 41 presses the cardboard box A in the transverse direction via the pressing rod 43, and the upper edge corner portion a of the cardboard box A is moved to the extended side 5a of the guide plate 5 on the fixed side until the width thereof is adjusted. To be done. Then, the pressing force with which the cardboard box A contacts the guide plate 5 is detected by the detection limit switch 44, and the operation of the reversible motor 42 is automatically stopped.

After the cardboard box A is correctly aligned in this way, a part of the cardboard box A is detected by detecting means (eg, photocell, not shown).
When detected, the reversible motor 31 of the automatic adjustment device 30 operates to move the frame member 6 in the transverse direction, and the guide plate 4 is moved to the edge corner a of the cardboard box A until the guide plate 4 comes close to the edge. In this case, the pressing force with which the cardboard box A contacts the guide plate 4 is detected by the detection limit switch 33, and the operation of the reversible motor 31 is automatically stopped. Furthermore, both upper edge corners a of the cardboard box A fed to the rotary blades 2, 3 are
As a result of being pushed along the guide plates 4 and 5 while being cut by 3, the upper edge corners a of the cardboard box A
However, it is reliably cut and separated from the cardboard box A according to a certain distance between the fixed and movable guide plates (4,5) and the rotary blades (2, 3) supported by them.

Therefore, not only in the case of the same size but also in the case where cardboard boxes of various sizes A are continuously supplied, it is possible to automatically position and adjust according to the size of the cardboard box A and perform continuous cutting processing. is there.

The fact that all the edge corners of the cardboard box A can be cut is the same as in the case of the first embodiment.

Advantageous Effects of Invention According to the present invention, a fixed side guide plate that supports one rotary blade in parallel with it at a certain interval and at the outside thereof and guides one upper edge corner of the cardboard box, A movable side guide plate that supports the other rotary blade in parallel with it at a constant interval and outwardly and adjusts the position in the transverse direction to guide the other upper edge corner of the cardboard box. Since the upper edge corner portion of the corrugated cardboard box, which is less deformed, is guided by the inwardly inclined guide plate, the upper edge angle can be reliably ensured by an amount corresponding to a certain distance between the rotary blade and the guide plate supporting it. Parts can be cut and separated. Therefore, when the cardboard box is cut, the products in the cardboard box are not damaged.
Further, the fixed guide plate is provided with an extension extending to the upstream side, and the pressing member movable in the transverse direction is provided on the upstream side of the movable guide plate facing the extension. Therefore, the positioning of the cardboard box inserted between the guide plates can be performed in advance with a simple configuration, and efficient cutting is possible.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view showing a first embodiment of a cardboard box cutting device according to the present invention, FIG. 2 is a front view of a cutting blade portion, and FIG. 3 is a cardboard according to the present invention. Box cutting device No. 2
FIG. 3 is a schematic perspective view showing the embodiment of FIG. In the figure, 1, 1 ': cutting device, 2, 3: cutting blade, 4, 5: guide plate, 61: frame member, 7: adjusting device, 8, 23: handle, 9, 32: connecting screw device, 10 , 14: frame, 12: supply conveyor device,
15: belt conveyor, 16, 22, 41: pressing member, 20: positioning device, 30: automatic adjusting device, 31, 42: reversible motor, 33, 4
4: Sensing limit switch, 40: Automatic positioning device, 43: Push rod.

Claims (1)

[Scope of utility model registration request] 1. A pair of corrugated boxes (A) fed by a supply conveyor device, each of which is provided on the supply conveyor device so as to be inclined inward with respect to each other so as to cut both upper edge corners (a). In a cardboard box cutting device having rotating blades (2, 3), one rotating blade (3) is supported in parallel with it at a predetermined interval and is supported at the outside thereof, and one of the cardboard boxes (A) The fixed side guide plate (5) for guiding the upper edge corner part and the other rotary blade (2) are supported at a certain interval in parallel to the outside of the plate, and the position in the transverse direction is adjusted. And a movable guide plate (4) for guiding the other upper edge corner of the cardboard box (A), and the fixed guide plate (5) is provided on the upstream side of the supply conveyor device. With an extension that extends In addition, on the upstream side of the movable side guide plate, a cardboard box (A) is provided between the movable side guide plate and the extension of the fixed side guide plate.
A corrugated cardboard box cutting device, which is provided with a pressing member that is movable in a transverse direction in order to perform the positioning.