JP2553381B2 - Cutting equipment for dumbbell boxes - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a corrugated cardboard box cutting device for accurately and surely cutting a box body of a corrugated cardboard box, and in particular, for cutting an upper edge portion of the box body. The present invention relates to a box cutting device suitable for opening the top surface of the box.

(Prior Art) Japanese Patent Laid-Open Publication No.
Those described in 63-11297 and Japanese Utility Model Publication No. 52-27178 are known.

Explaining the conventional technique described in the above publication, JP-A-63-11297 discloses a conveyor that conveys a box body and an upper edge of the box body that is arranged above the conveyor or the vicinity thereof. There is described a box cutting device including a cutter that cuts along with conveyance of a conveyor.

Also, Japanese Utility Model Publication No. 52-27178 discloses a packing disassembling device in which a bottom cutter and an upper cutter for cutting the bottom and the top of both sides of a package are connected in series.

(Problems to be solved by the invention) However, the above-mentioned conventional technology has the following problems.

That is, the box cutting device described in Japanese Patent Laid-Open No. 63-11297 or the packing dismantling device described in Japanese Utility Model Publication No. 52-27178 has a cutting depth for cutting the box. It cannot be set arbitrarily.

Therefore, an object of the present invention is to provide a cardboard box cutting device capable of accurately and surely cutting a box body by providing a cutting depth adjusting mechanism that moves a cutting blade according to a desired cutting depth. Especially.

(Means for Solving the Problem) According to the configuration of the present invention which solves the above problem, the downward position is adjusted to the elevating frame 31 that moves and moves up and down in the direction approaching the side surface of the cardboard box conveyed by the conveyor. Attaching the cutter frame 13 possible, in a cardboard box cutting device that cuts the edge of the cardboard box by the rotary blade by moving the cardboard box by a conveyor, a pair of pressing rollers 36 arranged in the cutting direction on the elevating frame, 36, the rotary blade attached to the cutter frame is interposed between the pair of pressing rollers, and is vertically movably attached to the rotary blade of the elevating frame, and the opening / closing frame for vertically elevating the elevating frame 31 is moved. Then, the box holding device 6 is brought into contact with the side surface of the cardboard box, and the elevating frame is lowered to move the box holding device 6 to the above. Position the rollers and lower the cutter frame according to the set values corresponding to the shape of the cardboard box edge, the thickness of the cardboard paper in the cardboard box, and the vertical position of the rotary blade with respect to the pressing roller. The cutting device for a cardboard box is configured so that the cutting depth by the rotary blade is adjusted by adjusting.

(Operation) According to the present invention, the open / close frame is moved horizontally to adjust the horizontal position, and the horizontal / vertical position of the box body holding device attached to the open / close frame is adjusted to move the box body holding device to the cardboard box. Hold the cardboard box against the sides.

Also, the elevating frame attached to the open / close frame is moved up and down to adjust the vertical position of the presser roller attached to the elevating frame, and the presser roller is pressed against the top edge of the cardboard box to position the cardboard box. .

Further, by vertically moving the cutter frame interposed between the pressing rollers with respect to the elevating frame, the vertical distance between the pressing roller and the rotary blades attached to the cutter frame is adjusted, and the cutting depth of the rotary blade is adjusted. Shall be appropriate according to the shape of the edge of the cardboard box and the thickness of the cardboard paper. This enabled the rotary blade to cut the edge of the cardboard box with the required cutting depth.

(Embodiment) First, an embodiment of a cutting device suitable for carrying out the cardboard box cutting device of the present invention will be described.

FIG. 1 is a front view showing an embodiment of a carton box cutting device, FIG. 2 is a side view thereof, and FIG. 3 is a plan view thereof. In these drawings, (1) indicates a carton box body ( A cutter provided with a cutting blade for cutting A), (2) a vertical movement device for vertically moving the cutter (1), (3) a cutting depth adjusting device for adjusting the cutting depth of the cutting blade, ( 4) is a horizontal movement device that moves the cutter (1) in the left-right direction, (5) is a biasing member that biases the cutter (1) toward the box (A), and (6) is the box (A) Is a box body holding device for holding the blade from the left and right directions, in which the cutter (1) is vertically moved by a vertical movement device (2) via a biasing tool (9), and the cutting blade of the box body (A). It is designed to be vertically aligned according to the top surface position, and by the cutting depth adjustment device (3) After moving the cutting blade according to the desired cutting depth, by moving the box body (A) by the box body holding device (6) and the transfer conveyor (7), the moving box body (A) The upper edge (B) can be cut. In FIG. 3, the cutter (1), the box holding device (6), the conveyor (7), etc. are omitted.

Explaining each part in the above-mentioned embodiment, two sets of the cutters (1) are provided so that the upper edge parts (B) at two places on the left and right of the box body (A) can be cut at the same time. 1) is composed of a rotary round blade (11) as a rotary blade of the present invention, a motor (12) for driving the rotary round blade (11), a cutter frame (13), a linear bearing (14), etc., The cutter (1) is configured to be moved in the vertical direction by a vertical movement device (2) via a biasing device (5) described later, and a cutting depth adjusting device (3).
Thus, the rotary round blade (11) is moved according to the desired cutting depth.

FIG. 4 shows the positional relationship of the rotary round blade (11) with respect to the upper edge portion (B) and the top surface (C) of the box body (A). The box pair (A) has a thickness of 2 mm to 8 mm. A suitable example is corrugated cardboard, but the invention is not limited thereto. That is,
The rotating round blade (11) is 60 against the top surface (C) of the box (A).
It is installed at an angle of °, but preferably 30 to 12
It may be attached at an angle of 0 °, more preferably 45 ° to 75 °. Also, as the vertical cutting depth,
An example of 5 mm to 15 mm is shown, but preferably 2 mm to 30 m
m, more preferably 3 mm to 20 mm. In addition, although an example in which the depth of cut in the left-right direction is 4 mm is shown, it is preferably 1 mm to 10 mm, more preferably 3 mm to 5 mm.

The vertical movement device (2) includes a linear rail (21) provided on the pair of open / close frames (41) and a timing belt (2).
2), an up-and-down moving body (23) that moves in the up-down direction by the rotation of the timing belt (22), an inverter-shifted lifting motor (24) and a ball spline (25) for driving the timing belt (22). ) Etc., the vertical moving body (23) is moved up and down so that the bracket (23b) and the box body holding device (3) described below move vertically through the linear bearing (23a). There is. The linear rail (21) has a linear bearing (23
Not only is the bracket (23b) and the box holding device (6) slid through a), but also the cutter frame (13) through the linear bearing (14) and the linear bearing (35). A stepping motor (33) and a lifting roller (36), which will be described later, are attached to the elevating frame (31) so that they can slide independently of each other, and have a triple slide structure.

In addition, the cutting depth adjusting device (3) is moved up and down by a vertical movement device (2) via a biasing tool (5) described later, a lifting frame (31), a lifting frame (31).
It is composed of a stepping motor (33) mounted on a bracket via a bracket (32), a ball screw (34) driven by the stepping motor (33), a linear bearing (35), and the like, and an elevating frame (31). Two pressing rollers (36) as pressing members for pressing the top surface (C) of the box body (A) are provided in the lower part of the box so as to sandwich the rotary round blade (11), and the stepping motor (33 ), The ball screw (34) is rotated, the cutter frame (13) is moved in the vertical direction, and the rotary round blade (11) is positioned at a desired cutting depth. That is, the cutting depth can be adjusted by increasing or decreasing the amount of protrusion of the rotary round blade (11) with respect to the pressing roller (36).

In addition, the left and right moving device (4) has a linear bearing (41
b), a width-adjusting bed (42) including a linear rail (42a), a ball screw (43) arranged parallel to the width-adjusting bed (42), and a screw shaft (43a) of the ball screw (43). A floating support (45) that includes a nut (43b) is moved in the left-right direction by the rotation of the screw shaft (43a) of the ball screw (43), which is composed of a width-shifting motor (44) that drives an inverter With the movement of the floating support (45), one opening / closing frame (41) is moved in the left-right direction via a biasing tool (9) described later. The other opening / closing frame is fixed in the left-right direction.

The biasing tool (5) includes a compression spring (51) mounted on the bracket (23b) and a pressing plate (5).
2) and the like, and the compression spring (5
By the extension of 1), a part of the weight of the elevating frame (31) and the like is added to the box body (A) to generate a biasing force.

Further, the box body holding device (6) is a pair of side surface belt conveyors that move in the vertical direction via the linear bearings (23a) as the vertical moving body (23) moves up and down.

Further, the transport conveyor (7) is a roller conveyor for transporting the box body (A), and has a stopper (8) for stopping the box body (A).

Further, (9) is a biasing member for biasing the cutter (1) toward the box body (A), and includes a floating support (45).
It is composed of a compression spring (91) and the like provided between the plate (41a) attached to the open / close frame (41) and the like, and when the compression spring (91) contracts, an urging force is generated. There is.

Next, one embodiment of the present invention will be described based on an embodiment in which the above-described box body cutting device is used.

In one embodiment of the present invention, first, one or a plurality of boxes (A) for each product type are continuously or intermittently conveyed by a conveyor (7), and the top box (A) is a stopper. When a detector (not shown) detects arrival at (8), the conveyer conveyor is stopped, and the rotary round blade is rotated according to the positions of the top surface (C) and side surface (D) of the leading box (A). (1
1) is moved up and down and left and right, and the rotary round blade is moved up and down according to the desired cutting depth, and then the transport conveyor (7) is operated again and the front is transported by the transport conveyor (7). The upper edge portion (B) of the second and subsequent boxes (A) is cut.

That is, the vertical moving device (2) and the horizontal moving device (4) are simultaneously operated to align the rotary round blade (11) with the positions of the top surface (C) and the side surface (D) of the box body (A). By this, the rotary round blades that are on standby above and outside the box body (A) to be cut are moved in the box body (A) direction. That is,
The lifting motor (24) is rotated at high speed, the box holding device (6) attached to the vertical moving body (23) is lowered at high speed via the timing belt (22), and the urging tool (5) is also installed.
The rotary round blade (11), the presser roller (36), etc. descend at a high speed via the. When the light projecting photoswitch (PH1) attached to the box body holding device (6) is shielded by the box body (A), the vertical movement device (2) causes the box body holding device (6) and the rotary round blade ( 11), the presser roller (36), etc. are switched to descend at a low speed, and the photo switch (PH2) turns into a box (A).
When the light is shielded by, the descent is temporarily stopped. At the same time, the width-shifting motor (44) is rotated at high speed, and the floating support (45) is width-shifted at high speed via the screw shaft (43a), so that one opening / closing frame ( 41) is width-shifted, and one of the rotary round blades (11), the box body holding device (6), etc. is width-shifted at high speed. When the reflection type photo switch (PH3) attached to the open / close frame (41) is shielded from light by the box body (A), the left and right moving device (4) causes one rotary round blade (11) and the box holding device (6). ), Etc. can be switched so that they can be moved at a low speed
When is blocked by the box body (A), the width adjustment is temporarily stopped. A reflection plate for the photo switches (PH3) and (PH4) is provided between the rollers of the transfer conveyor (7).

When both the lowering operation of the vertical moving device (2) or the width-shifting operation of the horizontal moving device (4) are temporarily stopped,
That is, while one of the previously stopped states stands by and the other temporarily stops, the lowering operation of the vertical movement device (2) and the width-shifting operation of the left and right movement device (4) are restarted. . In the vertical movement device (2), the pressing roller (36) presses the top surface (C) of the box body (A) via the urging tool (5), so that the pressing roller (36) stops descending. Also, the lowering operation is continued until it is detected that a predetermined biasing force is applied to the box body (A), that is, the compression spring (51) is extended by a predetermined amount. When the movement of the dog (31a) is detected by the photo switch (PH5), a predetermined biasing force is applied to the box body (A), so the vertical movement device (2)
Stops the lowering operation, and the vertical alignment (up / down alignment process) is completed. Further, in the left-right moving device (4), the box body holding device (6) presses the side surface (D) of the box body (A) via the urging tool (5), so that the box body holding device (6) moves. Even when the width adjustment is stopped, the width adjustment operation is continued until it is detected that a predetermined biasing force is applied to the box body (A), that is, the compression spring (91) is contracted by a predetermined amount. Dog (45
When the movement of a) is detected by the photo switch (PH6), it means that a predetermined urging force is applied to the box (A), so the left / right moving device (4) stops the width-shifting operation and moves to the left / right position. The alignment is complete. If you want to adjust the urging force, use the dogs (31a), (45a) or photo switches (PH5), (PH
Move the mounting position of 6).

At the same time as the alignment step of moving the rotary round blade (11) according to the positions of the top surface (C) and the side surface (D) of the box body (A) is performed, it is rotated by the cutting depth adjusting device (3). The round blade (11) is moved up and down according to the desired cutting depth. That is, the upper edge (B) of the box (A) to be cut
Shape and dimensions (thickness of the corrugated board that composes the box (A))
For example, as shown in FIG. 4, the cutting depth at the time of cutting is set in advance, so that the rotary round blade (11) is based on the stepping value of the stepping motor (33) corresponding to the set value. Is moved in the vertical direction, and the protrusion amount of the rotary round blade (11) with respect to the pressing roller (36) is increased or decreased. The relationship between the stepping value and the amount of movement of the rotary round blade (11) can be set as appropriate, but may be, for example, 0.1 m / pulse, preferably 0.02 mm / pulse.

At this time, when not cutting either of the two upper edges (B), raise the rotary round blade (11) on the upper edge (B) side which is not cut to the upper position, that is, the position where it is not cut. Good. As described above, since the stepping motor (33) can operate independently, the upper edge (B) of the box (A)
Can be cut simultaneously, or only one of them can be cut. Therefore, by using two box cutting devices, a box cutting device that cuts the upper edge (B) of the box (A) in the longitudinal direction and a box cutting device that cuts in the width direction, It is possible to cut all four upper edge portions (B) of the box body (A), but if necessary, cut only one upper edge portion (B) or two upper edge portions (B). (B) can be cut into an L-shape, or the three upper edge portions (B) can be cut into a U-shape. Also, the respective cutting depths can be set to different values.

As described above, when the rotary round blade is located on the extension line of the upper edge portion (B) of the box body (A), the stopper (8) descends, and at the same time, the conveyor (7) and the box body holding device (6). ) Side belt conveyor is operated, and the first and second boxes (A) move in the direction of the arrow, and the boxes (A)
The upper edge (B) is cut. Although the second and subsequent boxes (A) are not aligned with each other, the pressing roller (36) and the box holding device (6) are moved by the urging tools (5) and (9). Since it is urged in the direction A), even if there is a slight dimensional difference due to deformation etc. of the individual box bodies (A), the rotary round blade (11) is moved according to the size of each box body (A). To follow.

If different types of boxes (A) are conveyed by the conveyor (7), the rotary blade (1
1) returns to the standby position, and the rotary blade (1
The box body (A) is cut after 1) is automatically aligned and moved according to a desired cutting depth.

The embodiments of the box cutting device and the embodiments of the present invention suitable for carrying out the present invention have been described above, but the present invention is not limited thereto. For example, the box body (A) in the stopped state may be cut.

Further, instead of detecting the deflection of the compression springs (51) and (91) and performing alignment, the vertical movement device (2) and / or
Alternatively, the left-right moving device (4) may be moved to a desired position without being temporarily stopped, and then stopped to be aligned. In this case, the compression spring (5
1) and (91) are adjusted so that they are bent.

Further, as the pressing body (36), instead of the flanged roller,
A collarless roller, a large number of caterpillar rollers, and a sled-shaped sliding body having good sliding property may be used.

(Effects of the Invention) As described above, in the corrugated cardboard box cutting device of the present invention, since the cutting depth is adjusted so that the cutting blade moves in accordance with the desired cutting depth, the upper edge portion of the box body can be accurately and surely. Can be cut.

Since the moving box can be cut, the box can be cut with high ability.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing an embodiment of a corrugated cardboard box cutting device of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a plan view thereof, and FIG. 4 is a rotation thereof. It is explanatory drawing of the positional relationship between a round blade and a box. (11): Cutting blade (rotary round blade) (A): Box body, (C): Top surface

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP 62-271828 (JP, A) JP 63-11297 (JP, A) JP 2-85123 (JP, A) Actual development Sho 61- 102413 (JP, U)

Claims (1)

(57) [Claims] 1. A cutter frame (13) that can adjust its downward position to an elevating frame (31) that moves and moves up and down toward the side of a cardboard box conveyed by a conveyor.
In a cutting device for a cardboard box that cuts the edge of the cardboard box by the rotary blade by moving the cardboard box by a conveyor, a pair of pressing rollers 36, 36 arranged in the cutting direction on the elevating frame are attached, and The rotary blade attached to the cutter frame is interposed between the pair of pressing rollers, movably attached to the rotary blade of the elevating frame up and down, and the open / close frame that supports the elevating frame 31 is moved to move the box. The body holding device 6 is brought into contact with the side surface of the cardboard box, the elevating frame is lowered to position the pressing roller, and the shape of the edge of the cardboard box, the thickness of the cardboard paper of the cardboard box, etc. are dealt with. The cutter frame can be lowered according to the set value to adjust the vertical position of the rotary blade with respect to the pressing roller. Cutting apparatus of the cardboard box which is adapted to adjust the cutting depth by the rotary blade by.