JPH0550533A - Method and apparatus for applying pressure sensitive adhesive tape to corrugated fiber board case - Google Patents

Abstract

PURPOSE:To obtain a firmly fastened adhesion state with a good appearance without causing any creases on an pressure sensitive adhesive tape by pressing an pressure sensitive adhesive tape to the corner part in a state of applying tension to the adhesive tape in the direction across the corner in the corner part of a corrugated fiber board case. CONSTITUTION:A cylinder 46 is contracted by putting a pilot valve 72 off. A press roller 53 moves while pressing a pressure sensitive adhesive tape 6 to an outwardly folding piece 16 thus securing the pressure sensitive adhesive tape to the upper surface. At the completion of contraction of the cylinder, the frame 60 of the pressing roller 53 goes slightly over the corner 1e of a corrugated fiber board case 1, and the pressing roller 53 is pressed to the corner 1e through the forces of a spring 65 in retaining a state of applying tension to the pressure sensitive adhesive tape 6. Accordingly, the pressure sensitive adhesive tape 6 is secured without generating creases on the corner part 1e.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a device for making a crease on a corrugated board, putting an article therein, bending the corrugated board into a quadrangular shape, and attaching an adhesive tape to the joint of the ends of the folds.

[0002]

2. Description of the Related Art For example, in order to put a sash frame of a fitting into a vertically long corrugated cardboard for transportation, conventionally, an adhesive tape is generally manually attached to the corners of the corrugated pieces of the corrugated cardboard. In today's labor-intensive work, where it is difficult to secure personnel, automation has been demanded.

In order to meet this demand, FIG.
There is one shown in (A). That is, the inner fold piece 1a and the outer fold piece 1b of the corrugated cardboard box 1 are overlapped, and the adhesive tape 6 is applied from the outer fold piece 1b to the adjacent surface 1c of the inner fold piece 1a through the corner portion 1e which is the fold of the inner fold piece 1a. Corrugated cardboard box 1 folded into a square shape as shown to attach it
Stick the half surface of the adhesive tape 6 on the outer folded piece 1b on the
After moving the cardboard box 1 in the direction of the arrow X, the adhesive tape 6 is passed under the horizontal roller 7a to press the adhesive tape 6 onto the outer folded piece 1b by the horizontal roller 7a. In order to bring the portion protruding laterally from 1e close to the adjacent surface 1c, one side is tapered, and the adhesive tape 6 is guided by contacting a plurality of guide rollers 7b and 7c whose taper angles are successively increased,
Finally, the adhesive tape 6 is applied to the adjacent surface 1e by the vertical roller 7d.
Is pressed and fixed.

[0004]

According to the prior art shown in FIG. 13A, when the adhesive tape 6 is relatively thin and flexible, the vertical roller 7d applies the adhesive tape 6 to the adjacent surface 1c. When pressed, there was a problem that wrinkles 8 were generated in the corner portion 1e as shown in FIG. 13 (B). Further, there is a problem that a narrow adhesive tape cannot be attached.

Further, since the guide rollers 7a to 7d are arranged along the moving direction X of the cardboard box 1, there is a problem that the scale of the adhesive tape sticking device becomes large.

In view of the above problems, the present invention can firmly adhere the adhesive tape to the corner portion of the cardboard box with good appearance without being influenced by the material and width of the adhesive tape, and can reduce the scale of the apparatus. An object of the present invention is to provide a method and an apparatus for attaching an adhesive tape to a cardboard box.

[0007]

To achieve this object, the method of the present invention comprises folding a corrugated cardboard board along the creases of the corrugated board and opening the corrugated board box from the opposite side to the inner fold. It is a method of assembling a corrugated cardboard box by folding and closing the outer folded piece and pasting an adhesive tape from the outer folded piece through the corner portion that is the bent portion of the inner folded piece to the adjacent surface perpendicular to the inner folded piece. (1) A step of pressing the tip of the adhesive tape against the outer folded piece. (2) While pressing a roller in a direction perpendicular to the plate surface of the outer folded piece, the roller is moved in a direction closer to the corner portion, thereby fixing the adhesive tape to the outer folded piece, and fixing the adhesive tape A step of continuing the state of pressing the roller to a position beyond the corner. (3) A step of cutting the adhesive tape while the roller is pressed against the portion beyond the corner. (4) A step of fixing the adhesive tape to the adjacent surface up to the cut end by moving the roller while pressing it along the adjacent surface. It consists of and.

Further, the apparatus of the present invention (1) is folded along the creases of the corrugated board and holds the state in which the opening of the corrugated box is closed by folding the outer fold from the opposite side to the inner fold. apparatus. (2) A head in which an adhesive tape pressing roller is attached to the tip, an adhesive tape suction means and an adhesive tape reel are mounted, and a tape cutter is attached between the adhesive tape pressing roller and the adhesive tape suction means. (3) Biasing means for pressing the pressing roller against the outer folded piece. (4) The first head is moved in the direction perpendicular to the surface of the outer folded piece, and the position in the vertical direction is changed stepwise.
Means of transportation. (5) The head is moved in a direction vertical to an adjacent surface that is parallel to the surface of the outer folded piece and is vertically adjacent to the inner folded piece via a fold line, and the position of the head is stepwise. The second means of transportation to change. (6) The control device for the first and second moving means. It consists of and.

[0009]

In the present invention, the adhesive tape is pressed against these surfaces by the pressing roller in the order of the outer folded piece, the corner portion, and the adjacent surface while the cardboard box is fixed without being fed. .. In the present invention, the adhesive tape is pressed by a series of operations from the outer folded piece to the portion beyond the corner portion, so that the adhesive tape is firmly pressed against the roller even at the corner portion and is not wrinkled.

[0010]

1 is a side view showing an embodiment of a sticking apparatus according to the present invention, and FIG. 2 is a plan view. In FIGS. 1 and 2, 10 is a base frame, and 11 is a holding device that is installed on the base frame 10 and folds and holds a quadrangular shape along a fold line from a corrugated board. Reference numeral 12 is a first moving means for moving the sticking head 13 in the vertical direction and positioning it in three steps, 14
Is a second moving means for moving the head 13 in the horizontal direction and positioning it in three stages.

The holding device 11 for the corrugated cardboard box 1 includes side surface pressing plates 16 and 17 for standing up side surface portions 1c and 1d of the corrugated cardboard box 1, and upper surface pressing members for respectively pressing the inner folded piece 1a and the outer folded piece 1b constituting the upper surface. It has plates 18 and 19. The side surface pressing plates 16 and 17 are fixed to the rotary shafts 21 and 22 so as to form the same plane as the table 20 on which the bottom plate portion 1f of the corrugated board box 1 is placed in the initial state, and the rotary shafts 21 and 22 respectively. It is supported by bearings 23 and 24.

An operating device for operating the side pressing plates 16 and 17 is a motor 26 and a screw rod 25 rotated by the motor 26 and having a right screw 27 and a left screw 28.
And a female screw block 29 screwed to each screw 27, 28,
30 and an operation plate 3 fixed to one end of the rotary shafts 21 and 22.
1 and 32, and coupling mechanisms 33 and 34, which are provided between the operation plates 31 and 32 and the blocks 29 and 30, and are formed of elongated holes and pins.

As shown in the side views of FIGS. 1 and 3, the bases 35 and 36 attached to the rear surfaces of the side pressing plates 16 and 17, respectively.
A hydraulic or electric rotary actuator 3
Shafts 39, 40 rotated by 7, 38 are attached, and the upper pressing plates 18, 19 are attached to the rotary shafts 39, 40, respectively.
Is installed. Pressing plate 18 for pressing inward folded piece 1a
The base 35 for mounting is movable along the guide rod 41, and when the adhesive tape is attached, the side pressing plate 16 and the base 3 are attached.
5, the fluid pressure cylinder 42 is extended as shown by the chain double-dashed line a in FIG.
It is removed from between 1b to prevent a gap from being formed between both pieces 1a and 1b.

As shown in FIGS. 1 and 2, the first moving means 12 is installed on the movable base 44 of the second moving means 14, and the movable base 44 is mounted on the base frame 10. It is movably installed along two guide rods 45 which are horizontally installed so as to form a right angle with respect to the rotary shafts 21 and 22. Between the movable table 44 and one end of the guide rod 45, the horizontal position of the movable table 44 and the first moving means 12 with respect to the cardboard box 1 is set in three stages.
Two fluid pressure cylinders 46 and 47 are connected in a cascade connection.

The first moving means 12 mounts the two guide rods 48 vertically on the movable base 44 and mounts the head 13 so as to be vertically movable along the guide rods 48. Between the head 13 and the upper end of the guide rod 48, in order to set the vertical position of the head 13 with respect to the corrugated cardboard box 1 in three stages, two fluid pressure cylinders 50 and 51 are connected in cascade connection. ing.

The head 13 is connected to a pressing roller 53, a tape cutter 54, a vacuum pump (not shown) or the like via a hose 55 and a tape suction plate having a large number of suction holes 56a in this order from the tip. 56, a tape guide roller 57, and an adhesive tape reel 58 are mounted.

As shown in the side view of FIG. 4 and the front sectional view of FIG. 5, the support frame 60 of the pressing roller 53 is attached to the lower end of a rod 62 which is vertically movably fitted to a guide cylinder 61 attached to the head 13. The plate 63 attached to the upper end of the rod 62 is pressed downward by a spring 65 attached to a pin 64 fixed to the head 13.
The pressing roller 53 projects downward by Δh from the lower surface (suction surface) of the tape suction plate 56, and the head 1
It projects from the tip of 3 forward by ΔL.

The tape cutter 54 is attached to the lower end of a rod 67 fitted in a guide cylinder 66 attached to the head 13, and the rod 67 is connected to a piston rod 69 of a fluid pressure cylinder 68 attached to the head 13. Has been done. As shown in FIG. 2, these moving means 12, 14
Shows an example in which two sets of moving means 12 and 14 (these are collectively referred to as A) are installed between the pressing plates 16 to 19 in this example.

FIG. 6 shows a control circuit for the cylinders of the moving means 12 and 14. In this embodiment, the spring loaded pneumatic cylinders 46, 47, 50, 51 and 68 are piloted by a control device 70 such as a sequencer. Valves 72-7
6 is controlled to control the supply and discharge of compressed air from the compressor 71 to each of the cylinders so as to expand and contract.

In the present invention using such a device, in the state shown in FIG. 1, a corrugated cardboard plate with four corner folds is placed on the table 20 and the pressing plates 16 and 17 which are in a flat posture. Is placed on the bottom plate portion 1f, and an object to be packaged such as a sash frame is placed on the bottom plate portion 1f.
The side parts 1c and 1d shown in FIG. Next, the rotary actuator 37 on the right side of FIG. 1 is rotated in the forward direction to rotate the pressing plate 18 as indicated by arrow c to bend the inner fold piece 1a along the fold line as shown by the solid line in FIG. The rotary actuator 38 is rotated in the forward direction to rotate the pressing plate 19 as indicated by the arrow c to fold the outer fold piece 1b onto the inner fold piece 1a along the fold line as shown by the solid line in FIG. Is extended and the pressing plate 18 is pulled out from between the inner folded piece 1a and the outer folded piece 1b.

In this state, by operating the cylinders of the moving means 12, 14 in the order of steps S1 to S7 of FIG. 7, the adhesive tape 6 is automatically moved from the outer folded piece 1b to the corner portion 1e and the side surface portion 1c (inner side). Stick it on the adjacent surface of the folded piece 1a).

FIG. 8 is a view corresponding to step S1 in FIG. 7, and the pilot valve 72, 73 is turned on by the controller 70 in a state where the tip end portion of the adhesive tape 6 is sucked by the tape suction plate 56. Cylinder 4
6 and 47 are extended, and the pressing roller 53 and the tape suction plate 56 are positioned on the cardboard box 1.

Next, in step S2, the pilot valve 74 is turned on to extend the cylinder 50, and as shown in FIG. 9, the adhesive tape 6 is adhered onto the outer folded piece 1b via the tape suction plate 56. The adhesive surface of the tape 6 is pressed. As a matter of course, the lower surface of the tape suction plate 56 when the cylinder 50 is extended is set to be slightly lower than the upper surface of the outer folded piece 1b, whereby the tip portion of the adhesive tape 6 can be adhered. In this state, the pressing roller 53 is pushed up by the outer folded piece 1b against the force of the spring 65 as shown in the figure.

Next, in step S3 of FIG. 7, the cylinder 46 is turned off by turning off the pilot valve 72.
Contract, so that the pressing roller 53 moves while pressing the adhesive tape 6 against the outer folded piece 1b to fix the adhesive tape 6 to the upper surface. This moving state is shown in FIG. 10, and the ending state of the moving in this step is shown in FIG. The movement distance from the state of FIG. 9 to the state of FIG. 11 is the stroke of the cylinder 46, and by the combination of the strokes of the cylinder 47 and the cylinder 46, when the contraction of the cylinder 46 ends,
The frame 60 of the pressing roller 53 slightly exceeds the corner portion 1e of the cardboard box 1, and the pressing roller 53 causes the spring 6 to move.
The adhesive tape 6 is pressed against the corner 1e with the force of 5.
By being pressed against the corner portion 1e while keeping the tension applied to the corner portion 1e, the adhesive tape 6 is fixed without wrinkling at the corner portion 1e.

Then, as shown in step S4 of FIG.
The pilot valve 76 is turned on to extend the cylinder 68, thereby lowering the tape cutter 54 downward as shown by the chain double-dashed line d in FIG. 11, and cutting the adhesive tape 6 at a portion beyond the corner 1e. After that, the pilot valve 76 is turned off and the tape cutter 54 is returned to the original position.

Subsequently, as shown in step S5 of FIG.
By turning on the pilot valve 75 and extending the cylinder 51, the adhesive tape 6 is cut by vertically pushing down the pressing roller 53 along the side surface 1c of the cardboard box 1 as shown in FIG. The end portion is fixed to the side surface portion 1c.

Subsequently, as shown in step S6 of FIG.
The pilot valve 73 is turned off to contract the cylinder 47, thereby separating the pressing roller 53 from the side surface portion 1c, and subsequently, as shown in step S7 of FIG. 7, the pilot valves 74 and 75 are turned off and the cylinders 50 and 51 are turned off. Is contracted to return the head 13 to the position shown in FIG.

In the above embodiment, an example was described in which the adhesive tape was attached to the mating portion in the longitudinal direction of the cardboard box 1, but the present invention can be applied to the case where the adhesive tape is attached to the end surface of the cardboard box 1. .. A rack, pinion type or screw rod type may be used as the moving means 12 and 14 for carrying out the present invention, and the positioning means is not a combination of strokes of two cylinders but a limit switch. It is also possible to adopt the on / off control of the actuator by the or the numerical control method. Further, as the tape suction means, it is possible to use an electrostatic suction type or the like instead of the vacuum suction type. In addition, the adhesive tape 6 has a large resistance to cutting by the tape cutter 54.
When using, the tape reel 58 may be provided with a brake so that the tape is not fed out at the time of cutting.

Others When the present invention is carried out, the present invention is not limited to the above-mentioned embodiments, and various modifications and additions can be made to the specific shape, structure, combination, or movement of the heads, and further the fixing of the cardboard box 1. is there.

[0030]

According to the first aspect of the present invention, in the corner portion of the corrugated cardboard box, the adhesive tape is pressed against the corner portion in a state where tension is applied to the adhesive tape in a direction crossing the corner portion. Even when it is made of a soft material, the adhesive tape has a good appearance and is firmly adhered without wrinkling. Also,
When attaching the adhesive tape, it is not necessary to move the cardboard box, and the device can be constructed in a small size. Further, since the adhesive tape is attached in the direction orthogonal to the corner portion, even an adhesive tape having a narrow width can be attached.

According to claim 2, the first, which are orthogonal to each other,
By the second moving means, the sticking device can be configured with a simple mechanism.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of an adhesive tape sticking device of the present invention.

2 is a plan view of the embodiment of FIG.

FIG. 3 is a side view showing a part of the corrugated board box holding device of the present embodiment.

FIG. 4 is a side view showing the head of this embodiment.

FIG. 5 is a front sectional view of a pressing roller according to the present embodiment.

FIG. 6 is a control circuit diagram of the actuator of the moving means of the present embodiment.

FIG. 7 is a process drawing of the present example.

FIG. 8 is a side view showing an initial positioning state by the moving means of the present embodiment.

FIG. 9 is a side view showing a state in which the adhesive tape is pressed by the moving means of the present embodiment.

FIG. 10 is a side view showing a state in which the roller is horizontally moved and pressed by the moving means of the present embodiment.

FIG. 11 is a side view showing a horizontal movement completion state and an adhesive tape cutting state by the movement means of the present embodiment.

FIG. 12 is a side view showing a state where the side surface of the adhesive tape is pressed by the moving means of the present embodiment.

FIG. 13 (A) is a perspective view showing a conventional adhesive tape attaching method, and FIG. 13 (B) is a front view of a corrugated cardboard box corner portion for explaining the problem.

[Explanation of symbols]

 1 Cardboard Box 1a Inner Folding Piece 1b Outer Folding Piece 1c Side Part 1e Corner Part 10 Base Frame 12 First Moving Means 13 Head 14 Second Moving Means 16-19 Pressing Plate 21, 22 Rotating Shaft 26 Motors 37, 38 Rotary Actuator 44 Movable table 46, 47, 50, 51, 68 Fluid pressure cylinder 45, 48 Guide rod 53 Pressing roller 54 Tape cutter 56 Tape suction plate 57 Guide roller 58 Tape reel 65 Spring

Claims (2)

[Claims] 1. A corrugated paper board is folded along a fold line of the paper board, an opening of the corrugated board is closed by folding an outer fold piece from the side opposite to the inner fold piece, and the inner fold piece is internally folded. A method of assembling a corrugated cardboard box by sticking an adhesive tape over the adjacent surface perpendicular to the inner foldable piece through the corner part that is the bent part of the piece, and comprising the following steps: How to attach tape. (1) A step of pressing the tip of the adhesive tape against the outer folded piece. (2) While pressing the roller in the direction perpendicular to the plate surface of the outer folded piece, the pressing roller is moved in the direction close to the corner portion, thereby fixing the adhesive tape to the outer folded piece, and fixing the adhesive tape. The step of performing the work while keeping the state where the roller is pressed to a position beyond the corner portion. (3) A step of cutting the adhesive tape while the roller is pressed against the portion beyond the corner. (4) A step of fixing the adhesive tape to the adjacent surface up to the cut end by moving the roller while pressing it along the adjacent surface. 2. An adhesive tape sticking device for a corrugated cardboard box having the following structure. (1) A device that is folded along the creases of a corrugated board and holds the state where the opening of the corrugated box is closed by folding the outer fold from the opposite side to the inner fold. (2) A head in which an adhesive tape pressing roller is attached to the tip, an adhesive tape suction means and an adhesive tape reel are mounted, and a tape cutter is attached between the adhesive tape pressing roller and the adhesive tape suction means. (3) Biasing means for pressing the pressing roller against the outer folded piece. (4) The first head is moved in the direction perpendicular to the surface of the outer folded piece, and the position in the vertical direction is changed stepwise.
Means of transportation. (5) The head is moved in a direction vertical to an adjacent surface that is parallel to the surface of the outer folded piece and is vertically adjacent to the inner folded piece via a fold line, and the position of the head is stepwise. The second means of transportation to change. (6) The control device for the first and second moving means.