JP2002249116A - Unpacking device for box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically unpack a paper box or the like. SOLUTION: An unpacking device for the box 1 or the like has a driving roller conveyor 8 for placing the box 1, an elevating/lowering frame 17 which is vertically movable above the driving roller conveyor 8, horizontally moving bodies 20A to 20D which are provided in the elevating/lowering frame 17 in such a way so as to move along the upper peripheral edge of the box 1, and cutting units 25A to 25D for cutting the corner parts of the peripheral edge of the box 1, which are obliquely provided in the horizontally moving bodies 20A to 20D.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for unpacking a box such as a paper box.

[0002]

SUMMARY OF THE INVENTION An object of the present invention is to provide a box unpacking apparatus for automatically unpacking a box such as a paper box.

[0003]

Means for Achieving the Object The present invention employs the following means to achieve the object. The invention according to claim 1 includes a box mounting table on which a box is mounted, an elevating frame capable of moving up and down above the box mounting table, and an elevating frame.
One having a horizontal moving body provided so as to move along the upper peripheral corner of the box, and a cutting unit provided with an oblique cutter provided at the horizontal moving body for cutting off the upper peripheral corner of the box It is. The invention according to claim 2 is characterized in that the cutting unit is provided so as to be vertically swingable directly or indirectly on a horizontal moving body, and a vertically swinging member having a guide abutting on the upper surface of the box, and a vertically swinging member, A sliding member having a guide which is obliquely movable back and forth with respect to the side surface of the box so as to form an acute angle with the lower side thereof, and which has a guide abutting on the side surface of the box; A cutter provided so as to be parallel to the moving surface, wherein the vertically swinging member is urged in a direction in which the guide comes into contact with the upper surface of the box, and the slide member comes into contact with the side surface of the box. 2. The device according to claim 1, wherein the bias is applied in the direction. According to a third aspect of the present invention, a front-rear moving member is provided on the elevating frame so as to be able to move back and forth, and the second and third horizontal moving members are provided on the front-rear moving member so as to be able to approach and separate from each other. Is provided so as to be able to move left and right, and a first horizontal moving body is provided so as to be able to move left and right at a front portion of the lifting frame.
It is described.

[0004]

According to the present invention, the following effects can be obtained by the above-described configuration. According to the first aspect of the present invention, the box can be automatically unpacked by cutting off the upper wall of the box. According to the invention of claim 2, even if the box is slightly deformed, the cutting unit can be reliably moved along the box and the upper wall of the box can be cut off. According to the third aspect of the present invention, the boxes can be unpacked in a short time by using the cutting units provided on the four horizontal moving bodies.

[0005]

Embodiments of the present invention will be described below. In this description, the front refers to the right side in FIG. 1, the rear refers to the left side in FIG. 1, the left refers to the back side of FIG. 1, and the right refers to the front side.

[0006] A drive roller conveyor 8 (a box mounting table referred to in the claims) is provided on the base frame 7 of the unpacking device 6 with the transport direction facing forward, and a stopper is provided slightly behind the front end of the drive roller conveyor 8. Reference numeral 10 is provided so as to be able to protrude and retract with respect to the transport surface of the drive roller conveyor 8. The stopper 10 is operated by an operating device 11 such as a hydraulic cylinder.

[0007] A pair of left and right holding pieces 12 whose longitudinal direction is directed in the front-rear direction are provided movably right and left above a portion of the drive roller conveyor 8 behind the stopper 10.
A pair of left and right moving pieces 14 are provided on the holding pieces 12 between the rollers of the driving roller conveyor 8, and these left and right moving pieces 14 are directed to the base frame of the driving roller conveyor 8 so that the longitudinal direction is directed to the left and right directions. The guide rod 13 is provided so as to be movable left and right. The pair of left and right holding pieces 12 are made to approach or separate from each other by a known operating device (not shown). With such a configuration, the projected stopper 10
The left and right side walls 3 of the box 1 stopped by the
2, the center of the box 1 in the left-right direction can be positioned at the center of the drive roller conveyor 8 in the left-right direction.

[0010] Guide rods 16 whose longitudinal direction is directed up and down are provided near the four corners of the base frame 7, and an elevating frame 17 is provided along these guide rods 16 so as to be able to move up and down. The lift frame 17 is raised and lowered by a known operating device (not shown).

A pair of front and rear guide rods 19A whose longitudinal direction is directed to the left and right are provided at the front of the lifting frame 17, and a first horizontal moving body 20A is provided along these guide rods 19A so as to be movable left and right. Have been. The first horizontal moving body 20A is configured to move left and right by a known operating device (not shown) (provided on the lifting frame 17).

A longitudinal moving member 22 composed of a self-propelled carriage is provided on the elevating frame 17 so as to be movable back and forth, and the longitudinal moving member 22 is provided with a pair of front and rear guide rods 19B whose longitudinal direction is directed to the left and right. Along the guide rod 19B, a second horizontal moving body 20B and a third horizontal moving body 20C are provided so as to be movable left and right. The pair of left and right second horizontal moving bodies 20B and the third horizontal moving body 20C are moved closer to each other or separated from each other by a known actuator (not shown) (provided on the front-rear moving member 22). It has been made like that.

A pair of front and rear guide rods 19D whose longitudinal direction is directed to the left and right are provided at a rear portion of the front and rear moving member 22, and a fourth horizontal moving body 20D is provided along these guide rods 19D so as to be movable left and right. ing. The fourth horizontal moving body 20D is configured to move left and right by a known operating device (not shown) (provided on the front-rear moving member 22).

A cutting unit 25A is provided on the first horizontal moving body 20A. The cutting unit 25A includes:
A bracket 26 provided on the first horizontal moving body 20A,
A pivot 27 with its axis oriented in the left-right direction on this bracket 26
Swinging member 28 which is vertically swingable via
And a guide roller 29 (a guide referred to in the claims) that is rotatably provided at the rear portion of the vertically swinging member 28 so that the axis is oriented in the front-rear direction, and abuts on the upper surface of the upper wall 2 of the box 1. And the side wall 3 on the front side of the box 1
And a slide member 30 provided obliquely so as to be able to advance and retreat slidably so that a lower angle α formed with the side surface of the slide member 30 becomes an acute angle, and an arm 31 provided on the slide member 30.
A guide roller 32 (a guide in the claims), which is rotatably provided with its axis centered in the vertical direction and abuts against the side surface of the front side wall 3 of the box 1, is provided on the slide member 30. And a cutter 33 provided so as to be parallel to the sliding movement surface.

As shown in FIG. 5, the cutting edge of the cutter 33 is located between the guide roller 29 and the guide roller 32 located on the right side of the guide roller 29 when viewed from above. The blade portion 33a of 33 faces the left side.

The cutter 33 is provided with a guide roller 29.
Is in contact with the upper wall 2 of the box 1 and the axis of the guide roller 29 is horizontal, so that the angle α formed with the upper wall 2 of the box 1 is about 45 degrees. Then, the cutter 33 (the vertical swing member 28) is moved to its swing reference position G.
(See FIG. 4). That is, the vertical swing member 28 is configured to hit a stopper (not shown) provided on the bracket 26 at a position where the vertical swing member 28 swings by the angle β from the swing reference position G. The vertical swing member 28 is urged by an urging means (not shown) such as a spring so that the guide roller 29 side faces downward.

The guide roller 32 is arranged so that its axis is oriented vertically when the guide roller 29 is in contact with the upper wall 2 of the box 1 and the axis of the guide roller 29 is horizontal. The slide member 30 is urged by urging means (not shown) such as a spring in a direction protruding toward the box 1. Then, the guide roller 32 comes into contact with the side wall 3 of the box 1 and the slide member 30 is retracted from the box 1 to a middle position of the sliding range 2L (see FIG. 4) against the force of the urging means. In this state, the cutter 33 is located at a position suitable for cutting the corner of the upper edge of the upper portion of the box 1. That is, the cutting unit 25A provided on the first horizontal moving body 20A has a positional relationship as shown in FIG. 4 with respect to the box 1 stopped by the stopper 10.

According to the structure described above, the guide roller 29 can move the upper wall 2 even if the upper wall 2 is slightly undulated in the vertical direction.
And the guide roller 32 is provided on the side wall 3 even if the side wall 3 is slightly undulating in the front-rear direction.
To make sure that it abuts.

The third horizontal moving body 20C has the same structure as the cutting unit 25A, except that the cutting unit 25A provided on the first horizontal moving body 20A is rotated clockwise 90 degrees horizontally. Cutting unit 25 having
C is attached. In order to make the height position of the guide roller 29 equal to the height position of the guide roller 29 of the cutting unit 25A, the cutting unit 25C has a bracket 26 whose vertical length is different from that of the bracket 26 of the cutting unit 25A. However, the rest has the same structure as the cutting unit 25A.

The second horizontal moving body 20B is provided with a cutting unit 25B. The cutting unit 25B includes a cutting unit 25C provided on the third horizontal moving body 20C.
Has the same shape as the image that appears when the cutting unit 25C is projected with a mirror placed at the center in the left-right direction with the mirror surface facing right.

The fourth horizontal moving body 20D has the same configuration as the cutting unit 25B, except that the cutting unit 25B provided on the second horizontal moving body 20B is rotated horizontally by 90 degrees counterclockwise. Cutting unit 2 having structure
5D is attached.

[0020]

Next, the operation of the embodiment of the present invention will be described with reference to FIGS. The following operations are performed using a computer (not shown), a lifting frame 17, a forward / backward moving member 22, and position detectors (not shown) provided on the first to fourth horizontal moving bodies 20A to 20D. Automatically.

As shown in FIG. 8, the front / rear moving member 22 is located at the rear standby position, and includes a first horizontal moving body 20A (cutting unit 25A) and a third horizontal moving body 20C (cutting unit 2).
5C) and the fourth horizontal moving body 20D (the cutting unit 25).
D) is located at the standby position on the right side, and the second horizontal moving body 20
B (cutting unit 25B) is located at the standby position on the left side. The lifting frame 17 is located at a standby position (uppermost position), the left and right holding pieces 12 are located at left and right standby positions, and the stopper 10 is in a lowered state. When the box 1 is placed on the rear end of the drive roller conveyor 8, the drive roller conveyor 8 is driven and the box 1 is transported forward. And
The box 1 stops upon hitting a stopper 10 which has been raised as the drive roller conveyor 8 is driven. When the box 1 comes into contact with the stopper 10, the drive roller conveyor 8 stops. After that, the left and right holding pieces 12 are adjacent to each other and hold the box 1 so that the center of the box 1 in the left and right direction is located at the center of the driving roller conveyor 8 in the left and right direction.

Thereafter, the lifting frame 17 is moved to the guide roller 2.
In a state in which 9 hits the upper wall 2 of the box 1, the vertical swinging member 28 is lowered to the height position where the vertically swinging member 28 becomes as shown in FIG.

Thereafter, as shown in FIG. 9, when the first horizontal moving body 20A moves from right to left, the upper front corner of the box 1 is cut off by the cutter 33 of the cutting unit 25A. In addition, in FIGS. 1 to 7, the first horizontal moving body 20A is illustrated in a state where the first horizontal moving body 20A is at the position “A” in FIG. At the same time, the front-rear moving member 22 is moved by the guide rollers 2 of the cutting unit 25B and the cutting unit 25C.
9 moves forward so that it is located near the rear of the box 1.

Thereafter, as shown in FIG. 10, the second horizontal moving body 20B and the third horizontal moving body 20C swing up and down to the state shown in FIG. 7 when the guide roller 29 hits the upper wall 2 of the box 1. The members 28 approach each other so as to be.

Thereafter, as shown in FIG. 11, the forward / backward moving member 22 is advanced so that the cutter 33 of the cutting unit 25D is located at a position suitable for cutting off the upper rear corner of the box 1. Along with the movement, the rear portions of the upper and lower edge corners of the box 1 are cut by the cutter 33 of the cutting unit 25B and the cutter 33 of the cutting unit 25C.

Thereafter, as shown in FIG. 12, when the fourth horizontal moving body 20D moves from right to left, the upper rear corner of the box 1 is cut off by the cutter 33 of the cutting unit 25D. Note that in FIGS. 1 to 7, the second horizontal moving body 20B is drawn in a state of “B” in FIG. 12, and the third horizontal moving body 20C is in a state of “C” in FIG. , And the fourth horizontal moving body 20D is drawn in a state of “d” in FIG.

Thereafter, as shown in FIG. 13, the front and rear moving member 22 advances, so that the remaining left and right corners of the upper portion of the box 1 are cut off by the cutter 33 of the cutting unit 25B and the cutter 33 of the cutting unit 25C. You.

Thereafter, the lifting frame 17, the first horizontal moving body 20
The A to fourth horizontal moving bodies 20D and the like return to the standby positions in FIG.

Thereafter, when the stopper 10 is lowered and the drive roller conveyor 8 is driven, the unpacked box 1 is sent out to a carry-out conveyor (not shown) provided in front of the drive roller conveyor 8. Thereafter, the holding pieces 12 are separated from each other left and right.

In the operation described above, it is apparent that the guide roller 29 rides on the upper wall 2 of the box 1 after the cutting units 25A to 25D start moving to start the cutting operation. Keep it.

[0031]

[Modifications and the like] Modifications and the like are described below. (1) Instead of the drive roller conveyor 8, a simple table may be used as the box mounting table. (2) A cutting unit may be provided in one horizontal moving body, and the horizontal moving body may be moved along the upper four corners of the box 1 to open the box 1. (3) The guide may be a simple guide piece instead of a roller.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

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

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

FIG. 4 is an enlarged view of a part of the part A in FIG.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a sectional view taken along line VI-VI of FIG. 4;

FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. 4 without an intermediate portion.

FIG. 8 is a schematic plan view for explaining the operation of unpacking, part 1
It is.

FIG. 9 is a schematic plan view for explaining the operation of unpacking, part 2
It is.

FIG. 10 is a schematic plan view for explaining an unpacking operation, part 3;

FIG. 11 is a schematic plan view for explaining an unpacking operation, part 4;

FIG. 12 is a schematic plan view for explaining an unpacking operation, part 5;

FIG. 13 is a schematic plan view for explaining an unpacking operation, part 6;

[Explanation of symbols]

 1 Box 2 Upper Wall 3 Side Wall 6 Unpacking Device 8 Drive Roller Conveyor 17 Lifting Frame 20A First Horizontal Moving Body 20B Second Horizontal Moving Body 20C Third Horizontal Moving Body 20D Fourth Horizontal Moving Body 25A Cutting Unit 25B Cutting Unit 25C Cutting Unit 25D Cutting unit 33 Cutter

Claims (3)

[Claims] 1. A box mounting table on which a box is mounted, an elevating frame movable up and down above the box mounting table, and a horizontal frame provided on the elevating frame so as to move along an upper peripheral corner of the box. A box unpacking apparatus comprising: a moving body; and a cutting unit provided on the horizontal moving body, the cutting unit including an oblique cutter for cutting off a corner at an upper peripheral edge of the box. 2. A vertical swinging member having a guide abutting on an upper surface of a box, wherein the cutting unit is provided so as to be able to swing vertically or indirectly on a horizontal moving body, and a vertical swinging member includes A slide member is provided slidably and obliquely so that the lower side angle formed with respect to the side surface is an acute angle, and has a guide abutting on the side surface of the box. And a cutter provided so as to be parallel to the upper and lower swinging members, wherein the vertically swinging member is urged in a direction in which the guide comes into contact with the upper surface of the box, and the slide member is moved in a direction in which the guide comes into contact with the side surface of the box. The box unpacking device of claim 1, wherein the device is energized. 3. A vertically movable member is provided on the elevating frame so as to be able to move back and forth, and a second and third horizontal moving member is provided on the front and rear moving member so as to be able to approach and separate from each other, and a fourth horizontal moving member is provided on the left and right. 3. The box unpacking device according to claim 1, wherein the first horizontal moving body is movably provided at a front portion of the lifting frame so as to be movable left and right.