JP4554091B2 - Folder gluer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a folder gluer that forms a flat box by folding and bonding panels on both sides while transporting a blank having four panels separated by vertical ruled lines.
[0002]
[Prior art]
As shown in FIG. 5I, the corrugated cardboard sheet S in which two horizontal ruled lines a are ruled is usually manufactured by a corrugator. The corrugated sheet S is usually supplied to the printer slotter and together with the print on the surface is performed, FIG. 5 slot grooves 1 and the first vertical lines as shown in (II) b ₁ to fourth vertical lines b ₄ Are formed to form a box forming blank B having the first panel P _{1 to} the fourth panel P ₄ , the joining margin P ₅ , the lid panel P ₆ and the bottom panel P ₇ .
[0003]
The blank B is normally supplied to the folder gluer in the next process, and the first panel P ₁ and the fourth panel P ₄ on both sides are bent 180 ° by the folder gluer, and the adhesive previously applied to the joining margin P ₅ is applied. The joining allowance P ₅ and the first panel P ₁ are bonded to each other through the agent, so that a flat box A shown in FIG. 5 (III) is formed.
[0004]
As the folder gluer for forming the flat box A from the blank B, the one shown in FIG. 3 is conventionally known. In this folder gluer, a lower conveyor belt 12 having a length shorter than the upper conveyor belt 11 is provided below each of the two upper conveyor belts 11 arranged in parallel, and the carrier located below the upper conveyor belt 11 is provided. The blank B is held from above and below by the side belt 11a and the carrier side belt 12a positioned above the lower conveyance belt 12 and conveyed in the direction of the arrow, and the blank is formed by the first folding rods 13 provided on both sides of the conveyance path. The first panel P ₁ and the fourth panel P ₄ on both sides of B are bent downward along the first vertical ruled line b ₁ and the third vertical ruled line b ₃ inside thereof.
[0005]
At this time, a folding ruler 14 is provided on each side of the conveyance path of the blank B, as shown in FIG. 4, and each folding ruler 14 is arranged in advance so that the first vertical ruled line b ₁ and the third vertical ruled line b ₃ face each other. The position is adjusted and the first panel P ₁ and the fourth panel P ₄ are bent using the bending ruler 14 as a guide.
[0006]
Also, as shown in FIG. 3, one end of a folding belt 15 for folding the panel is arranged on the outer side at the discharge end of each lower conveying belt 12, and the carrier side belt 15a of the folding belt 15 is disposed. Are twisted by being guided by a plurality of belt pressing rollers 16, and the other end portions of the carrier side belts 15a are vertically opposed to the discharge ends of the carrier side belts 11a in the upper conveying belt 11, so that the folding is performed. The first panel P ₁ and the fourth panel P ₄ of the blank B are formed by the carrier side belt 15a of the bending belt 15 and the second folding rod 17 provided along the discharge end of each carrier side belt 15a. further bent in the direction, via the previously applied adhesive layer bonding margins P _5, to each other join the side edges of the first panel P ₁ that overlaps to its bonding margins P ₅ I try to do it.
[0007]
Here, the folding ruler 14 has the first panel P ₁ and the fourth panel P ₄ bent at about 90 ° with respect to the second panel P ₂ and the third panel P ₃ from the position where the blank B is horizontally supported. It has a length that reaches the position and does not hinder the bending of the first panel P ₁ and the fourth panel P ₄ by about 180 °.
[0008]
[Problems to be solved by the invention]
Incidentally, in the folder gluer conventionally known, in the vicinity of 90 ° folding bending position along the carrier-side belt 15a of the folding belt 15 first panel P ₁ and the fourth panel P ₄ in the folding ruler 14 Although the provided belt presser roller 16 is supported so that the position can be adjusted, the position adjustment is manual adjustment. Once the folding belt 15 is stretched, the position is not adjusted and the fixed arrangement is achieved. Between the carrier side belt 15a and the folding ruler 14, an interval substantially equal to the maximum thickness among the various blanks B is provided. Even if the position of the belt pressing roller is adjusted, the adjustment is performed manually, so that accurate position adjustment is difficult.
[0009]
For this reason, when various blanks B having a small thickness are supplied to the folder gluer, and the first panel P ₁ and the fourth panel P ₄ of the blank B are bent by approximately 90 °, they are folded with the panels P ₁ and P _4. There is a case where a play is formed between the bending ruler 14 and the first panel P ₁ and the fourth panel P ₄ are bent from a position shifted from the first vertical ruled line b ₁ and the third vertical ruled line b _{3 due} to the play. Yes, the panels P ₁ and P ₄ cannot always be accurately folded along the first vertical ruled line b ₁ and the third vertical ruled line b ₃ .
[0010]
When the first panel P ₁ and the fourth panel P ₄ are bent at approximately 90 °, if the bending position is shifted, the first panel P ₁ and the fourth panel P ₄ are further moved 90 along the shifted position. Since it is bent, when the flat box A is formed, it is not possible to obtain a predetermined interval between the opposing side edges of the first panel P ₁ and the fourth panel P ₄ . That is, the first panel P ₁ and the fourth panel P ₄ are not bent in a state where a regular interval is maintained between the first vertical ruled line b ₁ and the third vertical ruled line b ₃ . At this time, if the box is formed in a state of being opened squarely from the flat box A, a distorted box is formed, and a box with high dimensional accuracy cannot be obtained.
[0011]
The object of the present invention is to fold the panels on both sides of the four panels formed in the blank with high precision along the vertical ruled lines provided on the inside, even for various blanks having different thicknesses. It is to provide a folder gluer that can do.
[0012]
[Means for Solving the Problems]
In order to solve the above problems, in the present invention, along the vertical ruled lines inside the panels provided on both sides of the blank, in the blank transport path having four panels divided by the vertical ruled lines. A folding ruler is provided, and the panels on both sides of the blank are bent by approximately 90 ° along the folding ruler by pressing the carrier side belt of the folding belt that moves in the same direction as the conveyance direction of the blank, and further 90 ° In a folder gluer that is bent to form a flat box by adhering the joining margin provided continuously to the side edge of one panel and the overlapping part of the other panel, the panels on both sides of the blank are substantially A belt pressing roller for pressing the carrier side belt of the folding belt is provided at a position where it can be bent at 90 ° so that the position of the belt pressing roller can be adjusted with respect to the bending ruler. And the position adjustment mechanism based on the input of a signal corresponding to the thickness of the blank so that the distance between the folding ruler and the belt pressing roller is substantially equal to the thickness of the folding belt plus the blank thickness. The structure provided with the control part which controls the drive part of a mechanism was employ | adopted.
[0013]
As described above, a folding belt for folding a panel that folds the panels on both sides of the blank is provided with a belt pressing roller at a position where the panel is bent approximately 90 ° along a folding ruler. By providing a position adjusting mechanism for adjusting the position with respect to the bending ruler and a control unit for controlling the driving unit of the position adjusting mechanism, the position of the belt pressing roller is adjusted by the bending ruler and the belt pressing roller. The distance between the folding belts can be accurately adjusted in millimeters according to the thickness of the blank that is sent, and by adjusting the distance between the panels on both sides, Can be folded along the vertical ruled line with extremely high accuracy, and a constant distance can always be formed between the opposing side edges of a pair of folded panels.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to FIGS. Since the overall configuration of the folder gluer is the same as the folder gluer shown in FIG. 3 described above, the folder gluer is cited.
[0015]
In FIG. 1, the fourth panel P ₄ of the blank B held by the upper conveyor belt 11 and the lower conveyor belt 12 from above and below is approximately 90 downward along the folding ruler 14 by the carrier side belt 15 a of the folding belt 15. A front view showing a bent portion is shown, and FIG. 2 is a cross-sectional view taken along the line II-II in FIG.
[0016]
As shown in FIG. 2, a pressing roller 18 is provided on the carrier side belt 11 a in the upper conveying belt 11. A roller support member 19 that rotatably supports the presser roller 18 is supported so as to be able to move up and down, and is urged by a spring 20 in a direction to push down the carrier side belt 11a.
[0017]
On the other hand, the carrier side belt 12 a of the lower conveyance belt 12 is supported by a belt guide 21. A folding ruler 14 is provided on the outer side of the belt guide 21, and a carrier side belt 15 a to which the bending belt 15 is twisted is arranged on the outer side of the bending ruler 14 with a gap therebetween.
[0018]
The carrier side belt 15a is in a substantially vertical state with both side edges positioned vertically and parallel to the bending ruler 14, and is held between the carrier side belt 11a of the upper conveyance belt 11 and the carrier side belt 12a of the lower conveyance belt 12. The fourth panel P ₄ of the blank B to be conveyed is bent approximately 90 ° downward with the bending ruler 14.
[0019]
The carrier side belt 15a is held in a substantially vertical state by a belt pressing roller 22 provided on the outside thereof.
[0020]
The belt pressing roller 22 is supported so as to be position-adjustable with respect to the bending ruler 14, and the position is automatically adjusted by the position adjusting mechanism X.
[0021]
The support and position of the belt pressing roller 22 can be freely adjusted as follows. That is, a bracket 25 is attached to a belt support frame 26 that supports the upper transport belt 11, and an eccentric shaft 24 is provided at the lower end of a rotary shaft 23 that is rotatably supported by the bracket 25, and the belt pressing roller 22 is provided by the eccentric shaft 24. The belt pressing roller 22 is adjusted with respect to the bending ruler 14 by the rotation of the rotary shaft 23.
[0022]
The rotation of the rotary shaft 23 of the position adjusting mechanism X is performed by fixing a worm wheel 27 to the upper part of the rotary shaft 23 and driving a worm 28 meshed with the worm wheel 27 by a motor 29.
[0023]
A motor 29 as a drive unit of the position adjustment mechanism X is controlled by a control unit 30 shown in FIG. A data signal λ ₁ with the bending ruler 14 as a reference position and a data signal λ ₂ corresponding to the thickness of the blank B are input to the control unit 30. The control unit 30 determines that the distance between the folding ruler 14 and the belt pressing roller 22 from the signals λ ₁ and λ ₂ is a value obtained by adding the thickness of the blank B to the thickness of the bending belt 15 or the fourth panel P ₄ . Depending on the bent state and the running state of the folding belt 15, a calculation unit for obtaining a value obtained by slightly adding or subtracting this value is provided, and the bending ruler 14 and the belt are obtained by a signal from the control unit 30 based on the calculation result. The rotation of the motor 29 is controlled so that the distance between the 15 counters is approximately the thickness of the blank B.
[0024]
Although not shown in the figure, about 90 ° folding of the first panel P ₁ of the carrier side belt 15a is the first panel P ₁ of a fold belt 15 bending downwardly along fold ruler downwards blank B Also at the bending position, a belt pressing roller 22 shown in FIG. 2 and a position adjusting mechanism for adjusting the position of the belt pressing roller 22 with respect to the folding ruler 14 are provided in the same manner as the fourth panel P ₄ side.
[0025]
As described above, the belt pressing roller 22 to approximately 90 ° fold bending position a first panel P ₁ and the fourth panel P ₄ of the blank B carrier side belt 15a is in a bent ruler 14 in a downward folding belt 15 By providing a position adjusting mechanism X for adjusting the position of the belt pressing roller 22 with respect to the bending ruler 14 and a control unit 30 for controlling the rotary shaft driving motor 29 of the position adjusting mechanism X, a control unit is provided. By inputting a signal corresponding to the thickness of the blank B to 30, the distance between the carrier side belt 15 a of the folding belt 15 and the folding ruler 14 is automatically adjusted to a size substantially corresponding to the thickness of the blank B. be able to.
[0026]
As a result, the first panel P ₁ and the fourth panel P ₄ on both sides of the blank B are bent by approximately 90 ° without any play between them and the folding ruler 14. Therefore, the first panel P ₁ and the fourth panel P ₄ can be bent with extremely high precision along the first vertical ruled line b ₁ and the third vertical ruled line b ₃ shown in FIG. When the flat box A is formed, a highly accurate box A in which a predetermined interval is formed between the opposing side edges of the first panel P ₁ and the fourth panel P ₄ can be formed. .
[0027]
【The invention's effect】
As described above, according to the present invention, the belt pressing roller is provided at a position where the carrier side belt of the folding belt bends the panels on both sides of the blank approximately 90 ° between the folding ruler and the belt pressing roller is folded. By providing a position adjustment mechanism that adjusts the position relative to the bending ruler and a control unit that controls the drive unit of the position adjustment mechanism in accordance with the thickness of the blank, a signal corresponding to the thickness of the blank is input to the control unit. By doing so, the distance between the carrier side belt and the folding ruler can be automatically adjusted to a size substantially corresponding to the thickness of the blank.
[0028]
Therefore, even for various blanks with different thicknesses, the panels on both sides can be bent with high precision along the inner vertical ruled lines, and the distance between the opposite side edges of both panels is very accurate. A high flat box can be formed.
[Brief description of the drawings]
FIG. 1 is a front view showing a mounting portion of a belt pressing roller of a folder gluer according to the present invention. FIG. 2 is a cross-sectional view taken along line II-II in FIG. FIG. 4 is a cross-sectional view of the folder gluer shown in FIG. 3 at a position where the panels on both sides of the blank are bent downward by approximately 90 °. FIG. 5 (I) is a perspective view of a corrugated cardboard sheet manufactured by a corrugator. (II) is a perspective view showing a blank for forming a box formed from the sheet, (III) is a perspective view of a box formed from the blank.
B Blank P _{1 to} P ₄ Panel P ₅ Joining margin 14 Bending ruler 15 Bending belt 15a Carrier side belt 22 Belt pressing roller X Position adjusting mechanism 30 Control unit

Claims (1)

A folding ruler is provided along a vertical ruled line on the inside of the panel provided on both sides of the blank in a blank conveyance path having four panels divided by vertical ruled lines, and the blank panels on both sides of the blank are blanked. The carrier belt of the folding belt that moves in the same direction as the conveyance direction of the belt is bent approximately 90 ° along the bending ruler by pressing the carrier side belt, and is further bent 90 ° to be connected to the side edge of one panel. In a folder gluer that forms a flat box by adhering the bonded margin and the overlapping part of the panel on the other side, the carrier of the folding belt is positioned at a position where the panels on both sides of the blank are bent by approximately 90 °. A belt pressing roller that presses the side belt is provided so that the position of the belt pressing roller can be adjusted with respect to the bending ruler, and the position adjustment mechanism that adjusts the position of the belt pressing roller corresponds to the thickness of the blank. And a control unit for controlling the driving unit of the position adjusting mechanism so that the distance between the folding ruler and the belt pressing roller is substantially equal to the thickness of the folding belt plus the blank thickness based on the signal input. Folder gluer characterized by that.

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