JP2011184074A - Method and device for unpacking box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely cut a box open without damaging the content inside the box. <P>SOLUTION: A guard member 40 is provided so as to face a cutting blade 30. The guard member 40 is inserted inside a box 100 and positioned on the back surface side of a cutting surface 100A; thereby, even in a case where the cutting surface 100A is warped or deformed, the warp or deformation is straightened and the box is surely cut by the cutting blade 30. By the guard member 40 positioned inside the box 100, the content of the box 100 is prevented from being damaged by the cutting blade 30. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a box body unpacking apparatus and a box body unpacking method for unpacking a box body such as a cardboard box.

  As an apparatus for unpacking a box such as a cardboard, there is an apparatus having a mechanism for moving a cutting blade relative to the box.

  For example, Patent Document 1 discloses a technique for incising a cardboard box by holding the cardboard box and moving an incision blade along a guide.

However, if a cutting blade having the same length as the thickness of the plate-shaped material forming the box is used, the cutting blade cannot penetrate the box material if the outer surface of the box is deformed or bent. Or the cutting blade may not reach the box material. As a result, the box body is left uncut or the box body cannot be cut, and the box body cannot be unpacked.
On the other hand, when the length of the cutting blade is longer than the plate thickness of the material forming the box, the cutting blade protrudes into the box. As a result, the contents inside the box may be damaged.

  Therefore, in Patent Document 2, a state in which the material forming the box is attracted to the cutting blade side and held by sucking the surface of the box from the outside of the box by the suction member provided around the cutting blade. And the structure which performs the cutting | disconnection by an incision blade is disclosed. As a result, even if the box is deformed or bent, the box can be surely cut by the cutting blade, and the cutting blade does not need to be longer than necessary. Is less likely to hurt.

JP 2008-229819 A No. 7-16578

However, in the technique described in Patent Document 2, for example, when the surface of the box is greatly deformed, the surface of the box cannot be reliably adsorbed by the adsorbing member. Then, the material forming the surface of the box cannot be drawn toward the cutting blade, and the box may not be completely cut with the cutting blade.
Even in this case, in order to completely cut the material forming the box, the cutting blade projects into the box, and there is no possibility of damaging the contents of the box. In particular, when cutting various boxes with different plate thicknesses in one box unpacking device, it is necessary to set the cutting blade to a length that matches the one with the largest plate thickness. In the case of incising the box, the incision blade protrudes inward of the box and the problem of preventing the contents from being damaged cannot be completely solved.
An object of the present invention made there is to provide a box body unpacking apparatus and a box body incision method capable of reliably cutting the box body without damaging the contents of the box body.

The present invention employs the following means in order to solve the above problems.
That is, the box unpacking device of the present invention is a holding table that holds a box to be cut, a cutting blade that moves along the cutting surface of the box held by the holding table, and a cutting edge of the cutting blade. And a guard member that is inserted into the box and is located on the back side of the cut surface of the box.

    The unpacking method for a box of the present invention includes a step of inserting a guard member through a side surface adjacent to an incision surface for incising the box and inserting the guard member into the box, and A step of positioning the cutting surface inside the body on the back side of the cutting surface; and a step of cutting the cutting surface by moving a cutting blade along the cutting surface of the box. .

    According to the present invention, the box can be reliably incised without damaging the contents of the box.

It is a top view of the box body unpacking apparatus concerning a 1st embodiment. It is a perspective view which shows a cutting blade and a guard member, (a) is a figure which shows the state which covered the front-end | tip part of the cutting blade with the guard member, (b) is the state which exposed the front-end | tip part of the cutting blade from the guard member. FIG. It is a figure which shows the unpacking method of a box, and is a figure which shows the state before making a cutting blade and a guard member approach a box. It is a figure which shows the state following FIG. 3, and is a figure which shows the state which made the guard member penetrate the side surface of a box. It is a figure which shows the state following FIG. 4, and is a figure which shows the state which is incising the incision surface of a box with an incision blade. It is a figure which shows the state following FIG. It is a figure which shows the state which finished incision of the incision surface. It is a top view of the box unpacking apparatus concerning other embodiments. It is a top view which shows the state which closed the fixing member and hold | gripped and fixed the box.

    The best mode for carrying out a box unpacking apparatus according to the present invention will be described below with reference to the accompanying drawings. However, the present invention is not limited only to these examples.

(First embodiment)
FIG. 1 is a plan view showing a configuration of a box unpacking apparatus 10 according to the present embodiment.
As shown in FIG. 1, the box body unpacking device 10 is opposed to the rotary table 20 on which the box body 100 to be cut is set, the cutting blade 30 that cuts the box body 100, and the blade tip of the cutting blade 30. The guard member 40 is provided, a stage 50 to which the cutting blade 30 and the guard member 40 are fixed, and a moving mechanism 60 that moves the stage 50.

    The rotary table 20 has a box 100 mounted on the upper surface thereof. The turntable 20 has a rotation mechanism (not shown) so that the turntable 20 can rotate in a horizontal plane. Thereby, the direction with respect to the cutting blade 30 of the box 100 on the turntable 20 can be changed.

    The moving mechanism 60 includes a first guide member 61 extending along one horizontal direction, and a second guide member 62 extending perpendicularly to the first guide member 61 in a horizontal plane. The stage 50 is provided so as to be movable along a guide rail 63 formed on the first guide member 61. The first guide member 61 is provided such that both end portions thereof can move along the second guide member 62 in a horizontal direction orthogonal to the first guide member 61. By such a moving mechanism 60, the stage 50 can be moved in two directions along the first guide member 61 and the second guide member 62 in the horizontal plane. The operation of the stage 50 along the first guide member 61 and the operation of the first guide member 61 along the second guide member 62 are performed by the controller of the box unpacking apparatus 10 based on a preset computer program. Control is automatically executed.

The stage 50 has a plate shape, and the cutting blade 30 and the guard member 40 are fixed to the upper surface thereof.
The incision blade 30 includes a blade body 31 and a holder 32 that holds the blade body 31. A holder 32 is fixed to the upper surface of the stage 50 so that the blade body 31 faces the box 100 mounted on the rotary table 20 at a predetermined angle. In the blade body 31, the blade tip 31 a side extends along the first guide member 61 of the stage 50 when cutting the box body 100 with respect to the direction orthogonal to the cutting surface 100 </ b> A of the box body 100 mounted on the rotary table 20. It is provided to be inclined rearward in the traveling direction (in the example of FIG. 1, the direction of arrow A: hereinafter, this direction is referred to as incision direction A).

    The incision blade 30 is configured to incise the incision surface 100A of the box body 100 by the blade body 31 by moving the stage 50 along the first guide member 61 in parallel with the incision surface 100A of the box body 100. is there.

The guard member 40 includes a support member 41 fixed to the stage 50 and a penetrating member 42.
The support member 41 is provided on the rear side in the cutting direction A with respect to the cutting blade 30 in the stage 50. One end 41 a of the support member 41 is provided so as to protrude from the stage 50 to the box 100 mounted on the rotary table 20.
The penetrating member 42 is formed to extend from one end 41 a of the support member 41 to the incision direction A side. The penetrating member 42 is provided such that its outer peripheral surface faces the cutting edge 31 a of the incision blade 30. The penetrating member 42 has a round bar shape, and a tip end portion 42a is formed in a sharp shape that shrinks toward the tip.

    A cylindrical cover 43 is provided on the penetrating member 42. The cover 43 is provided so as to be movable in the axial direction along the outer peripheral surface of the penetrating member 42. The penetrating member 42 is provided with a biasing member 44 such as a spring that biases the cover 43 toward the tip end portion 42a. Thereby, as shown in FIG. 2 (a), the cover 43 accommodates the tip end portion 42a of the penetrating member 42 in the normal state, and the cover 43 is moved by an external force as shown in FIG. 2 (b). When pressed to the support member 41 side, the tip part 42a is exposed by moving to the support member 41 side.

    Such a guard member 40 moves the stage 50 along the first guide member 61 in parallel to the cut surface 100A of the box body 100, whereby the side surface 100B adjacent to the cut surface 100A by the distal end portion 42a of the penetrating member 42. Is penetrated and penetrates into the inside of the box body 100. Then, the guard member 40 is positioned on the back side of the incision surface 100A (inside the box body 100), thereby preventing the incision surface 100A from escaping from the cutting edge 31a of the incision blade 30.

    Here, the urging member 44 of the cover 43 has a repulsive force that is weaker than the force that the front end portion 42a of the penetrating member 42 is pressed against the side surface 100B to break through the side surface 100B of the box body 100. The cover 43 moves to the support member 41 side to expose the distal end portion 42a. Further, after the penetrating member 42 enters the box body 100, the urging member 44 returns the cover 43 to the original position and accommodates the distal end portion 42a. Further, the guard member 40 is placed on the cut surface 100A on the rear side. The cover 43 is set so that the cover 43 does not move to the support member 41 side due to the friction even if the cover 43 moves while being in contact therewith.

    The stage 50 includes a first sensor 51 and a second sensor 52 that detect the box 100. The first sensor 51 is provided at a position separated from the distal end portion 42 a of the penetrating member 42 of the guard member 40 on the incision direction A side by at least the plate thickness of the box body 100. The second sensor 52 is provided on the opposite side of the incision direction A from the rear end of the guard member 40 at a position separated by at least the plate thickness of the box body 100.

Next, an incision operation of the box body 100 in the box body unpacking apparatus 10 will be described.
The operation of the box unpacking apparatus 10 described below is automatically performed by a controller (not shown) automatically executing control based on a preset computer program.
First, as shown in FIG. 3, the box body 100 is set on the rotary table 20. At this time, the stage 50 including the cutting blade 30 and the guard member 40 is set at a position separated from the box 100 in a direction orthogonal to the cutting direction A. The stage 50 is positioned upstream of the cutting direction A in the first guide member 61, the guard member 40 faces the side surface 100B adjacent to the cutting surface 100A of the box body 100, and the first sensor 51 is the box body. It is made to face 100 incision surfaces 100A.

    Next, the first guide member 61 and the stage 50 are brought close to the box body 100 along the second guide member 62, and are stopped when the first sensor 51 detects the cut surface 100 </ b> A of the box body 100. In this state, the surface 40 a of the guard member 40 is located deeper (inner side) of the box body 100 than the thickness of the cut surface 100 </ b> A of the box body 100.

Then, the stage 50 is moved in the incision direction A along the first guide member 61. As shown in FIG. 4, when the front end portion 42a of the penetrating member 42 is pressed against the side surface 100B of the box body 100, the cover 43 moves to the support member 41 side, and the front end portion 42a is exposed. It penetrates through the side surface 100B of 100.
When the stage 50 further moves and the penetrating member 42 enters the box body 100, the cover 43 returns to its original position by the urging force of the urging member 44, and accommodates the tip end portion 42a.
At this time, the cutting blade 30 has a cutting edge 31a protruding beyond the box 100 by the thickness of the cutting surface 100A of the box 100, and the cutting of the cutting surface 100A is started as the stage 50 moves. .

    As shown in FIG. 5, after the guard member 40 is inserted into the back side of the cut surface 100A of the box body 100 in this way, the second guide 52 detects the cut surface 100A of the box body 100, and then the second guide. The first guide member 61 and the stage 50 are moved along the member 62 to the side away from the box body 100. And the movement of the 1st guide member 61 and the stage 50 is stopped in the state which the surface a of the guard member 40 contact | abutted to the back side of the incision surface 100A of the box 100. FIG.

    In this state, the stage 50 is moved in the incision direction A along the first guide member 61. Then, the cutting surface 100 </ b> A of the box body 100 is cut along the cutting direction A by the cutting blade 30. At this time, since the cut surface 100A of the box 100 is supported from the back side by the guard member 40 facing the cutting edge 31a of the cut blade 30, even if the cut surface 100A is distorted or deformed, Can be corrected, and the incision surface 100A can be reliably incised. Further, since the support member 41 of the guard member 40 passes through the portion incised by the incision blade 30 from the rear of the incision blade 30, no breakage occurs.

Then, as shown in FIG. 6, when the guard member 40 reaches the front side 100 </ b> C on the downstream side of the cut surface 100 </ b> A of the box body 100, the first sensor 51 does not detect the box body 100. Therefore, the first guide member 61 and the stage 50 are advanced by a predetermined dimension along the second guide member 62 toward the side closer to the box body 100. Then, the stage 50 is further moved in the incision direction A along the first guide member 61. Then, the tip end portion 42a of the penetrating member 42 is pressed against the side surface 100C of the box body 100 from the inside of the box body 100, the cover 43 moves to the support member 41 side, the tip end portion 42a is exposed, and the penetrating member 42 is boxed. It penetrates through the side surface 100C of 100. When the penetrating member 42 comes out of the box 100, the cover 43 returns to the original position by the urging force of the urging member 44 and accommodates the distal end portion 42a.
In this state, the cut surface 100A of the box 100 is completely cut.

    Thereafter, as shown in FIG. 7, when the stage 50 further moves in the incision direction A along the first guide member 61 and the second sensor 52 no longer detects the box body 100, the first guide member 61. Then, the stage 50 is retracted along the second guide member 62 in a direction away from the box 100 so that the cutting blade 30 and the guard member 40 do not interfere with the box 100. Then, the stage 50 is moved along the first guide member 61 to the side opposite to the incision direction A, and returned to the original position before the incision.

    Next, the turntable 20 is rotated by 90 °, and the side surface 100B or 100C adjacent to the cut surface 100A of the box body 100 is opposed to the stage 50 side. Thereafter, the same operation as described above is repeated, and the side surface 100B or 100C is incised as the incision surface 100A. Similarly, it is possible to unpack the box body 100 by rotating the turntable 20 by 90 ° and sequentially cutting the three or four side surfaces of the box body 100.

As described above, the guard member 40 is provided so as to face the cutting blade 30, and the guard member 40 is inserted into the box body 100 and positioned on the back side of the cutting surface 100A, so that the cutting surface 100A is distorted. Even if it is deformed or deformed, it can be corrected and the incision blade 30 can be incised reliably. In addition, since the guard member 40 is provided on the inner side of the box body 100, it is possible to prevent the contents of the box body 100 from being damaged by the cutting blade 30.
In addition, after the guard member 40 is inserted into the box body 100, the guard member 40 is moved to the back side of the cut surface 100A and moved along the back side of the cut surface 100A. Thereby, it is possible to prevent the contents of the box body 100 from being damaged by the guard member 40 also in this respect. Further, the guard member 40 is provided with a cover 43 on the penetrating member 42, and the front end portion 42 a of the penetrating member 42 is covered with the cover 43 except when the side surfaces 100 </ b> B and 100 </ b> C of the box body 100 are broken through. Thereby, it can also prevent that the contents of the box 100 are damaged by the guard member 40.

(Other embodiments)
In addition, the box body unpacking apparatus 10 of this invention is not limited to each above-mentioned embodiment demonstrated with reference to drawings, Various modifications can be considered in the technical scope.
For example, as shown in FIG. 8, a configuration can be added to the rotary table 20 so that the position of the box body 100 is not shifted. Specifically, a pair of fixing members 21A and 21B that sandwich the box body 100 from both sides are provided on the rotary table 20 ′. These fixing members 21A and 21B can be moved toward and away from each other along the guide rail 22 by using a ball screw or a cylinder. As shown in FIG. 9, the side surfaces 100B and 100C of the box body 100 are sandwiched from both sides. It can be fixed with.
In this manner, the box 100 is sandwiched and fixed from both sides by the fixing members 21A and 21B, so that the box 100 can be prevented from being displaced during incision by the incision blade 30, and the incision process can be performed reliably.
In accordance with this, in order to prevent the fixing members 21 </ b> A and 21 </ b> B from interfering with the rotary table 20 ′, the rotary table 20 ′ has a size that does not protrude outward from the bottom surface of the box body 100.

Such fixing members 21A and 21B hold and fix the box 100 from both sides during a series of incision steps.
When the incision of one incision surface 100A is completed, the fixing members 21A and 21B are opened, and the gripping / fixing of the box body 100 is released. Then, the rotary table 20 ′ is rotated, the fixing members 21A and 21B are closed again, and the box body 100 is gripped and fixed.
This is performed every time the incision of one incision surface 100A is completed, so that the box body 100 is securely fixed while incising each incision surface 100A, the incision by the incision blade 30, and the box body of the guard member 40 The penetration process of 100 side surfaces 100B and 100C can be performed stably.

Moreover, in the said embodiment, although the guard member 40 was set as the structure which provides the cover 43 in the penetration member 42, it is not restricted to this, It can insert in the box 100 and the content in the box 100 can be inserted. Any other configuration may be used as long as it can be prevented from being damaged.
Furthermore, although the 1st sensor 51 and the 2nd sensor 52 were made into the non-contact type, this can also be made into a contact type.
In addition, instead of moving the cutting blade 30 and the guard member 40 relative to the box body 100, the rotary table 20 side holding the box body 100 may be moved.
In addition to this, as long as it does not depart from the gist of the present invention, the configuration described in the above embodiment can be selected or changed to another configuration as appropriate.

DESCRIPTION OF SYMBOLS 10 Box body unpacking apparatus 20, 20 'Rotary table 21A, 21B Fixing member 30 Cutting blade 40 Guard member 42 Penetrating member 42a Tip part 43 Cover 50 Stage 51 1st sensor 52 2nd sensor 60 Moving mechanism 100 Box body 100A Cutting surface 100B side surface 100C side surface A cutting direction

Claims (7)

A holding table for holding a box to be incised;
An incision blade that moves along the incision surface of the box held by the holding table;
A guard member provided opposite to the cutting edge of the cutting blade, inserted into the box, and positioned on the back side of the cutting surface of the box;
A box unpacking device comprising: The guard member is a penetrating member capable of penetrating another side surface adjacent to the cut surface of the box,
A cover that is movably provided along the penetrating direction of the penetrating member, and that can be switched between a state of covering the tip of the penetrating member and a state of exposing the tip of the penetrating member;
An urging member that urges the cover from a state in which the tip of the penetrating member is exposed to a state of covering the tip of the penetrating member;
The box body unpacking apparatus according to claim 1, comprising: The cutting blade and the guard member are provided on one stage,
The box unpacking apparatus according to claim 1 or 2, wherein the stage is provided so as to be movable by a first moving mechanism that continues in a direction along the cut surface of the box.     The box unpacking apparatus according to claim 3, wherein the stage is provided so as to be movable by a second moving mechanism that is continuous in a direction orthogonal to the cut surface of the box. The guard member is supported by the stage via a support member,
5. The box according to claim 3, wherein the support member passes through a portion where the incision surface is incised by the incision blade when the stage moves in a direction along the incision surface. Unpacking device. A method of unpacking the box by opening the box and opening it,
Inserting a guard member through the side surface adjacent to the incision surface for incising the box body and inserting the guard member into the box body;
A step of positioning the guard member on the back side of the incision surface inside the box;
And a step of cutting the cut surface by moving a cutting blade along the cut surface of the box.   The method for unpacking a box according to claim 6, wherein, in the incision step, the guard member is moved along the incision surface together with the incision blade at a position sandwiching the incision blade and the incision surface.

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