JP3372278B2 - Unpacking device - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to an unpacking device. Here, as the paper sheets that the unpacking device can handle,
Paper, plastic sheets, metal sheets, etc. shall be included.

[0002]

2. Description of the Related Art In a sheet processing line such as a printing line, a bundle of sheets taken out by cutting a packing sheet is used.

By the way, the work of cutting the packaging paper, that is, the unpacking work has been performed manually until now.
That is, the operator cuts open the side surface of the packing sheet with a cutter and takes out the bundle of sheets.

However, the manual unpacking work is extremely inefficient and the burden on the operator is heavy.

Therefore, an automatic unpacking operation is described in, for example, Japanese Utility Model Laid-Open No. 64-9110. As shown in FIG. 11, the first rotary cutter blade 2 for cutting the side surface of the packing sheet 1 in the conveying direction and the front side surface (width side surface) of the packing sheet 1 for cutting the side surface in the conveying direction of the packing sheet 1 as shown in FIG. Two rotary cutter blades 3 are respectively arranged, and the side surface in the transport direction is cut open by the first rotary cutter blade 2 until the packing paper 1 is stopped at a predetermined position of the transport path, and after the stop, the second The front side surface is cut open with the rotary cutter blade 3.

[0006]

By the way, in the conventional unpacking device, the cutter blades 2 and 3 are configured to be rotated at a constant height position, and therefore the direction of the cutting line L by the cutter blade is completely horizontal. Direction. Therefore, the following inconvenience has occurred. For example, as shown in FIG. 12, packing paper 1
When the conveyance support surface 4 of FIG. 2 is inclined due to poor processing accuracy or assembly accuracy, the stacking surface of the packing paper 1 and the sheet bundle 5 in the packing paper is conveyed in an inclined state. However, since the direction of the cutting line L by the cutter blade is the horizontal direction as described above, the cutting line L of the cutter blade and the stacking line of the sheet bundle 5 in the packing paper 1 cross each other. 1 has a defect that the cutter blades 2 and 3 damage the sheet bundle 5 when the sheet 1 is cut open.

It is an object of the present invention to provide a packing device capable of slitting a packing sheet without damaging the inner sheet bundle even if the packing sheet is inclined.

[0008]

DISCLOSURE OF THE INVENTION The present invention is an unpacking device having a slitting device for slitting a side surface of a packaging paper, and a paper sheet take-out device for taking out paper sheets from the packaging paper cut by the slitting device. In, the slitting device,
A cutter blade that cuts open the side surface of the packing paper, and a support body for the cutter blade, the cutter blade being rotatably supported by the support body and movably in the thickness direction of the packing paper. The support is provided with a movement blocking member that temporarily blocks movement of the cutter blade with respect to the support in the thickness direction of the packing paper.

Further, the present invention provides an unpacking device having a slitting device for slitting a side surface of a packaging paper and a paper sheet take-out device for taking out paper sheets from the packaging paper cut by the slitting device. Has a cutter blade that cuts open the side surface of the packing paper, and a support for the cutter blade, and the cutter blade is rotatably supported by the support and movable in the thickness direction of the packing paper. Along with
The support is rotatably supported around an axis perpendicular to the side surface of the packing paper.

[0010]

According to the present invention, the cutter blade is movable in the thickness direction of the packing paper, and the support of the cutter blade is rotatable about the axis perpendicular to the side surface of the packing paper. Therefore, when the packaging paper is in the inclined state, the cutter blade displaces along the inclined state and cuts and cuts the packaging paper.

[0011]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view of an unpacking device according to the present invention, FIG. 2 is a perspective view of an opening portion in FIG. 1, FIG. 3 is a cross-sectional view of the cutter in FIG. 2, and FIG. 4 is a view showing a moving path of the cutter in FIG. 5 is a schematic view of the cut open state, and FIG. 6 is a sectional view taken along line FF in FIG.

First, the unpacking device in FIG. 1 is broadly divided into a packing paper supply section A, a transport section B, a slitting section C, and a sheet bundle storage section D.

The supply unit A has a first elevating table 6 which is moved up and down by a driving device (not shown), and the packing paper 1 stacked on a pallet 7 is placed on the elevating table 6. Then, by the upward movement of the elevating table 6, the uppermost packing sheet 1 is positioned at a fixed position.
Further, the supply section A is provided with a pushing arm 9 which is moved back and forth by the cylinder 8, and the forward movement of the pushing arm 9 pushes the uppermost packing sheet 1 in the direction of the slit C through the cross plate 10. .

The transport section B has a first conveyor 12 and a second conveyor 13 which are rotationally driven in synchronization by a motor 11, and the second conveyor 13 has a connecting shaft 14 with the first conveyor 12 as a center. It is positioned at two positions, that is, a horizontal position indicated by a solid line and a two-dot chain line position that bends downward. Moreover, above both conveyors 12 and 13, respectively,
The packing paper 1 conveyed by both conveyors is conveyed to the conveyor 12,
Pressing rollers 15 and 16 that are sandwiched with 13 are provided. Above the exit side of the second conveyor 13, a suction plate 18 that is moved up and down by a drive source such as a cylinder 17 is arranged so as to face it. The suction plate 18 is connected to a vacuum source (not shown) via a solenoid valve (not shown). The second conveyor 13
A suction roller 21 having a plurality of suction holes 20 on the outer periphery is fixed to the pulley support shaft 19 on the output side.

The slit C is, as shown in FIG.
The first cutter 22 and the second cutter 23 are provided, and the supply unit A
The front side surface (side surface in the width direction) and the side surface in the transport direction of the packing paper 1 pushed out from the transport section B are cut open. The first cutter 22 and the second cutter 23 can be moved on the transition plate 10 in a direction orthogonal to the transport direction of the packaging paper 1. Here, since the first cutter 22 and the second cutter 23 have the same configuration, the first cutter 22 will be described below as a representative. The first cutter 22 has a bracket 25 that is movable by being guided by a guide 24 that extends in a direction orthogonal to the transport direction of the packing paper 1, and a pair of support portions 26 of the bracket 25 that project in the horizontal state are provided with a spline shaft. 27 is rotatably supported in the vertical direction (see FIG. 3). The spline shaft 27 is rotationally driven by a motor 28. The cutter blade 29 is held by the pair of holding members 70 meshing with the spline shaft 27, whereby the cutter blade 29 rotates together with the spline shaft 27, but is relatively movable in the axial direction. Further, springs 31 and 32 are interposed between the holding member 70 and the pair of collars 30 integrated with the spline shaft 27, and the cutter blade 29 has both springs 3.
Floating state by 1 and 32. Then, when there is no load, the cutter blade 29 is adjusted so as to face the central position in the thickness direction of the packing sheet 1 positioned at the top of the supply section A. The bracket 25 has a vertical piece 33 fixed to an endless chain 34 stretched along the guide 24. When the endless chain 34 is driven by a motor 35, the bracket 25 moves while being guided by the guide 24. To be made.

Returning to FIG. 1 again, the sheet bundle storage section D has a storage arm 36 and a second lifting table 37. The storage arm 36 has a chuck 38 for holding the sheet bundle 5 carried out from the second conveyor 13 at the tip thereof, and is moved forward by a cylinder (not shown). The second elevating table 37 is for stacking and accommodating the sheet bundle 5 on the upper part thereof via the pallet 39, and every time the sheet bundle 5 is laminated by the accommodating arm 36, the second descending table 37 is lowered by the thickness thereof.

A supply unit A, a conveyance unit B, a slitting unit C,
Each operation control of the sheet bundle storage unit D is controlled by a control unit (not shown).

Next, the operation of the above configuration will be described. First, the packing paper 1 is placed on the first lifting table 6 in the supply unit A via the pallet 7. in this case,
The elevating table 6 is positioned at the lowermost position, and is lifted after the packing paper 1 is placed to position the uppermost packing paper 1 at a fixed position. Then, the push-out arm 9 moves forward by the operation of the cylinder 8, and pushes out the uppermost packing sheet 1. In this pushing-out operation, the front side of the packing paper 1 in the conveying direction is the crossing plate 1.
It is temporarily stopped when it is located at a predetermined position above 0. Here, the cutter blade 29 of the first cutter 22 is the motor 2
8 is rotated via the spline shaft 27, and the endless chain 34 is moved by the rotation of the motor 35 so that the packing paper 1 is moved in the width direction (a → b) as shown in FIG. 4 (A). ), The front side surface of the packaging paper 1 is cut open during this movement. Next, the first cutter 22 moves from b to c,
The second cutter 23 moves from d to e in FIG.
The packing paper 1 is between the cutter blades 29, 29 of both cutters 22, 23.
It is set to be narrower than the width of. Here, as the pushing arm 9 moves forward again, the packing paper 1 is pushed forward toward the first conveyor 12 as shown in FIG. Is cut open by both cutters 22 and 23.

By the way, since the cutter blade 29 is floatingly supported by the bracket 25 by the springs 31 and 32 provided on both sides, when the packaging paper 1 is cut open, it operates as follows. That is, FIG. 5 is a schematic view showing a state where the side surface of the packing paper 1 is cut open by the cutter blade 29, but when the packing paper 1 is cut open by the cutter blade 29 as shown in FIG. The paper 1 is pierced, and the leading end of the paper 1 enters the paper bundle 5. At this time, for example, packing paper 1
12 is in the inclined state as described with reference to FIG. 12, the inclination causes a difference in the pressing force acting on both side surfaces of the cutter blade 29 as the cutting and opening work progresses. At this time, the cutter blade 29 causes the spline shaft 2 to move due to the force difference.
It will move up or down along 7.

The packaging paper 1 which is cut open on three sides as described above is further forwarded by the first conveyor 12. When the packing paper 1 reaches the second conveyor 13, the suction plate 18 descends and rises, and the upper packing paper 1a (see FIG. 11) of the packing paper 1 is suction-held and lifted. Then, as the packing paper 1 moves, the upper packing paper 1a is unpacked, and at the output side of the second conveyor 13, the lower packing paper 1b of the packing paper 1 is adsorbed by the adsorbing roller 21 so that the leading end of the paper bundle 5 is removed. Exposed.

When the upper packing paper 1a is unpacked, the second conveyer 13 is bent with respect to the first conveyer 12 to sacrifice the bundle of papers 5, the details of which are described in Japanese Patent Application No. Hei. Since it is described in Japanese Patent Publication No. 4-40504, its description is omitted here.

The front end portion of the sheet bundle 5 exposed in this way is pinched by the chuck 38 of the storage arm 36 which moves forward and waits. Then, in this state, the storage arm 36 moves backward, and the sheet bundle 5 is placed on the previously stacked sheet bundle 5 on the second elevating table 37. The second elevating table 37 then descends and positions the uppermost stacking surface height at a fixed position.

As described above, in the above-described embodiment, when the packing paper 1 is cut open by the cutters 22 and 23, the cutter blade 29 moves upward or downward due to the difference in the pressing force acting on both side surfaces of the cutter blade 29. Therefore, even when the packing paper 1 is tilted, it is possible to unpack the paper bundle 5 inside without damaging it when the paper is cut open.

In the cutter of the above embodiment,
A blocking mechanism 40 that temporarily blocks the cutter blade 29 from moving up and down along the spline shaft 27 may be provided. As an example of this blocking mechanism 40, as shown in FIGS. 3 and 6, an arm 41 and a cylinder 42 supported by a bracket 25 so as to be horizontally movable are provided, and the arm 41 has a U-shaped member 43 at its free end. The sphere 44 held by the U-shaped member 43 when the cylinder 42 contracts
The holding member 70 of 9 is sandwiched from above and below to prevent the cutter blade 29 from moving up and down.

Therefore, according to this mechanism, when the cutter blade 29 starts to cut the packing sheet 1, the cylinder 42 is contracted to move the arm 41 to prevent the cutter blade 29 from moving up and down, thereby opening the packing sheet 1. It is possible to prevent the cutter blade 29 from wobbling at the start and always set the slit opening start position to a fixed position. After the start of slitting, the cylinder 41 causes the arm 41 to escape outward.

If such a blocking mechanism 40 is provided, the springs 31 and 32 on the side surface of the cutter blade 29 are not particularly required, and the point is that the cutter blade 29 can move vertically along the spline shaft 27. It is sufficient that the cutter blade 29 is positioned at a fixed position by the blocking mechanism 40 only when the opening of the packing paper 1 is started.

FIG. 7 shows a schematic view of a modification of the cutter.
The cutter 50 in this example is a pair of fluid cylinders 5.
A cutter blade 55 in which 1 and 52 are arranged so as to face each other and are rotationally driven by piston rods 53 and 54 of both cylinders 51 and 52.
Is to support. The opposing inner chambers 51a and 52a of the cylinders 51 and 52 are connected by a pipe 57 provided with a shutoff valve 56 on the way. Further, the outer chamber 52b of the cylinder 52 is provided with the pipe 5 provided with the switching valve 58.
It is connected to the pressure fluid supply pipe 60 via 9. The pressure fluid supply pipe 60 is connected to a pressure fluid supply device (not shown). The outer chamber 51b of the cylinder 51 is open to the atmosphere.

In such a structure, when the packing paper 1 is cut open, the pressurized fluid from the pressure fluid supply pipe 60 is supplied to the outer chamber 52b of the cylinder 52 through the pipe 59 by the operation of the switching valve 58. . At this time, the shutoff valve 56 does not operate,
Both inner chambers 51a and 52a are connected by a pipe 57. Therefore, the cutter blade 55 moves upward, but the cutter blade 5
The switching valve 58 is actuated when the height position of 5 is almost at the center position in the thickness direction of the packing paper 1, the supply of the pressure fluid to the outer chamber 52b is stopped, and the outer chamber 52b is opened to the atmosphere. At the same time, the shutoff valve 56 is actuated and the inner chamber 51
The communication between a and 52a is cut off. As a result, the position of the cutter blade 55 is held at a fixed position, and in this state, the slitting of the packing paper 1 is started. After that, the shut-off valve 56 is operated, and the inner chambers 51a and 52a are connected again by the pipe 57. After that, as in the first embodiment, the cutter blade 5 moves due to the difference in pressing force acting on both side surfaces of the cutter blade.
5 will move up and down freely.

Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 8 is a plan view of the second embodiment of the present invention, FIG. 9 is a front view of FIG. 8, and FIG. 10 is a front view showing a cut open state by the cutter shown in FIG. This example
The cutter blade swings together with the bracket that rotatably supports the cutter blade. Specifically, the cutter 61 shown here has a cutter blade at the tip of a swing arm 63 that is rotatably supported by a fixed shaft 62 supported by the apparatus main body in a direction orthogonal to the side surface of the packing paper 1. 64 is supported in a state similar to that described with reference to FIG. This swing arm 6
A torque setting member 65 is provided on one side surface of No. 3 via a spring 66 in a pressed state. The facing surface between the torque setting member 65 and the swing arm 63 is formed as a rough surface, and the fixed shaft 6
By adjusting the position of the collar 67 attached to the No. 2, it is possible to change the pressing force between both surfaces, that is, the setting of the rotational torque of the swing arm 63. In the figure, reference numeral 68 indicates a balance spring.

In this embodiment, similarly to the first embodiment, when the pressing force acting on both side surfaces of the cutter blade 64 is different, the cutter blade 64 moves along the spline shaft 27 due to the force difference. It will move up or down. Therefore, when the packaging paper 1 is cut open by the cutter blade 64,
Even if the packing paper 1 is tilted, it is possible to unpack the paper stack 5 inside without damaging it when the paper is cut.

Further, according to this embodiment, the cutter blade 64
Can move not only in the thickness direction of the packing paper 1, but also can swing about the fixed shaft 62 via the swing arm 63 as shown in FIG. As a result, the cutting angle by the cutter blade 64 automatically changes according to the placed state of the packing sheet, so that the effect of not damaging the inner sheet bundle at the time of opening the packing sheet is further ensured. can do.

In this embodiment, the cutter blade 64
A bracket for vertically moving the spline shaft along the spline shaft is rotatably provided on the side surface of the packing paper 1 and a support shaft orthogonal to the spline shaft 27.
The same effect can be obtained even if 4 is configured to be able to move up and down and swing.

According to the present invention, even if the packing paper is inclined, it is possible to cut open the packing paper without damaging the bundle of paper inside.

[Brief description of drawings]

FIG. 1 is a schematic view of an unpacking device according to the present invention.

FIG. 2 is a perspective view of a cutout portion in FIG.

FIG. 3 is a sectional view of the cutter in FIG.

FIG. 4 is a diagram showing a moving path of the cutter in FIG.

FIG. 5 is a schematic view of a cut open state.

6 is a sectional view taken along line FF in FIG.

FIG. 7 is a schematic view of a modified example of the cutter.

FIG. 8 is a plan view of the second embodiment of the present invention.

9 is a front view of FIG. 8. FIG.

10 is a front view showing a cut open state by the cutter shown in FIG. 8. FIG.

FIG. 11 is a perspective view of a conventional technique.

FIG. 12 is a schematic view showing a drawback of the conventional technique.

[Explanation of symbols]

L cutting line A supply section B transport section C slit part D paper stack storage 1 packing paper 5 paper bundle 22 1st cutter 23 Second cutter 25 bracket 27 spline shaft 29 cutter blade 31 spring 32 spring 40 Blocking mechanism 50 cutter 55 cutter blade 61 cutter 62 fixed axis 63 swing arm 64 cutter blade 65 Torque setting member 70 holding member

Claims (3)

(57) [Claims] 1. An unpacking device having a slitting device for slitting a side surface of packing paper and a paper sheet take-out device for taking out paper sheets from the packing paper slit by the slitting device, wherein the slitting device is A cutter blade that cuts open the side surface of the packing paper, and a support body for this cutter blade, the cutter blade being rotatably supported by the support body and movably in the thickness direction of the packing paper, An unpacking device, wherein the support is provided with a movement blocking member for temporarily blocking movement of the cutter blade in the thickness direction of the cutter blade with respect to the support. 2. An unpacking device having a slitting device for slitting a side surface of a packaging paper and a paper sheet take-out device for taking out paper sheets from the packaging paper slit by the slitting device, wherein the slitting device is the A cutter blade that cuts open the side surface of the packing paper, and a support body for this cutter blade, the cutter blade being rotatably supported by the support body and movably in the thickness direction of the packing paper, The unpacking device, wherein the support is rotatably supported around an axis perpendicular to the side surface of the packing paper. 3. The support is provided with a movement blocking member for temporarily blocking the movement of the cutter blade with respect to the support in the thickness direction of the packing paper.
Unpacking device as described.