JP2007223051A - Folder gluer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a folder gluer which can form a good case body with the opposite edges of the first panel and the fourth panel made parallel. <P>SOLUTION: A corrugated paper sheet S<SB>0</SB>having four panels P<SB>1</SB>-P<SB>4</SB>partitioned by a vertical ruled line and joining parts P<SB>5</SB>formed successively at the side ends of the panel P<SB>4</SB>on one side is conveyed in one direction. During the conveyance, a vertical ruled line part inside the panels P<SB>1</SB>and P<SB>4</SB>on both sides is crushed by a pressing means 20 to reduce folding strength, and the strength-reduced part is folded along a folding guide formed along the vertical ruled line to obtain the good rectangular flat case body A<SB>0</SB>high in dimensional accuracy. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a folder gluer that forms a flat box by bending and bonding both sides of a flat corrugated cardboard sheet having a joint margin on one side.

As a material for forming a flat box, a corrugated cardboard sheet S ₀ shown in FIG. 9 (I) is conventionally known. The corrugated cardboard sheet S ₀ includes first panel P _{1 to} fourth panel P ₄ and a joining margin P ₅ divided by the first vertical ruled line a _{1 to} fourth vertical ruled line a ₄ , and the first panel P ₁ The lid flap F ₁ is connected to _one end of the fourth panel P ₄ via the horizontal ruled line b ₁ , and the bottom flap F ₂ is connected to the other end of the fourth panel P ₄ via the horizontal ruled line b _2. The

As a folder gluer that forms a flat box from the corrugated cardboard sheet S ₀ as described above, the one described in Patent Document 1 is conventionally known.

The folder gluer opposes the first panel P ₁ and the fourth panel P ₄ on both sides along the first vertical ruled line a ₁ and the third vertical ruled line a ₃ while conveying the cardboard sheet S ₀ in one direction. The flat box A ₀ as shown in FIG. 9 (II) is formed by bending 180 ° in the direction to be bonded and bonding the overlapping portion of the joining margin P ₅ and the first panel P ₁ to each other. .
Japanese Utility Model Publication No. 6-21926

By the way, in the folder gluer described in Patent Document 1, the first panel P ₁ and the fourth panel P ₄ on both sides are moved at a high speed by contact with fixed folding bars provided on both sides of the conveyance path of the cardboard sheet S _0. since the bending while moved by friction acting resists contact portion between the bent bar, the first panel P ₁ and the fourth panel P ₄ occurring inclination, the first panel P ₁ and the fourth panel P ₄ As shown in FIG. 10, there is a problem that the first panel P ₁ and the joining margin P ₅ are bonded in a relatively inclined state, and a defective flat box A ₁ is formed.

  An object of the present invention is to provide a folder gluer in which the opposing edges of the first panel and the fourth panel are parallel to each other so that a good box having a regular size can be formed.

  In order to solve the above-described problem, in the present invention, four panels divided by ruled lines and a corrugated cardboard sheet having a joining margin continuously provided at the side end of the one panel are unidirectionally moved by a sheet conveying device. During the conveyance, the panels on both sides are bent by approximately 180 ° in the opposite direction along the inner ruled line, and the overlapping portion of the joining margin and the other panel is joined to each other to be flat. In a folder gluer forming a box, a ruled line inside the panels on both sides of the corrugated sheet is provided in the corrugated sheet transport path from when the corrugated sheet is fed into the sheet transporting device until the panels on both sides are bent by approximately 180 °. A configuration is provided in which pressing means for crushing the peripheral portion into a flat shape is provided.

  Here, as a pressing means, when a pair of left and right folding guides provided along the inner ruled line of the panels on both sides of the cardboard sheet and the panels on both sides of the cardboard sheet are folded along the folding guides , The inner peripheral edge of the panel line on both sides is pressed against the bending guide and flattened to crush flatly, and the flange inner surface of the flanged roller facing the bending panel is bent at the panel. It is possible to adopt a configuration in which the distance from the bending guide is reduced as it reaches the downstream flanged roller.

  As described above, by adopting a bending means and a plurality of flanged rollers as the pressing means, the corrugated cardboard sheet is gradually crushed flat by the plural rollers, so that the corrugated cardboard sheet is damaged. It can be crushed smoothly without any damage, and the inner periphery of the ruled line inside the panels on both sides can be crushed flatly, so the strength of the peripheral part of the ruled line can be reduced and the weakened part Since it is bent along the bending guide, the bent portion can always be substantially constant.

  As described above, press means is provided in the corrugated sheet conveyance path from when the corrugated sheet is fed into the sheet conveying apparatus until the panels on both sides are bent by approximately 180 °. Since the periphery of the ruled line is crushed flat, the bending strength at the crushing portion of the cardboard sheet can be weakened. For this reason, when the panels on both sides are bent, the bent portion can be made almost constant without being affected by the step-shaped structure of the middle shin, and the dimensional accuracy of the opposite edges of the panels on both sides is parallel. A high quality box can be formed.

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the corrugated sheet S ₀ shown in FIG. 9 (I) is transported in one direction indicated by the arrow by the sheet conveying apparatus 1.

  The sheet conveying apparatus 1 has a pair of left and right upper conveying belts 2 and a pair of left and right lower conveying belts 3.

One of the pair of upper transport belts 2 is provided at a position corresponding to the side of the second panel P ₂ of the cardboard sheet S ₀ on the first vertical ruled line a ₁ side, and the other is the third panel of the cardboard sheet S ₀ . It is provided at a position corresponding to the side portion of P ₃ on the third vertical ruled line a ₃ side.

  As shown in FIGS. 4 to 6, suction holes 4 are formed in each of the upper conveying belts 2. Further, as shown in FIG. 7, a suction box 5 is provided on the lower carrier side belt 2a of the upper conveyor belt 2, and the carrier side belt 2a moves to the lower belt guide plate 5a of the suction box 5. A slit 6 extending in the direction is formed.

Therefore, when sucking the internal air of the suction box 5, the suction force is applied to the suction holes 4 of the carrier belt 2a, the corrugated sheet S ₀ is conveyed moves by being adsorbed by the carrier side belt 2a.

  As shown in FIG. 2, the lower conveyor belt 3 is shorter than the upper conveyor belt 2, and the position of the carry-in end substantially coincides with the position of the carry-in end of the upper carry belt 2 as shown in FIG. Thus, it is provided below each upper conveyance belt 2.

Upper carrier side belt 3a of the lower conveyor belt 3 is arranged to hold the corrugated board sheet S ₀ between the carrier side belt 2a of the upper conveyor belt 2 from above and below, the corrugated sheet S ₀ is the carrier side of the upper conveyor belt 2 The belt is transported downstream by suction by the belt 2a and the carrier-side belt 2a of the upper transport belt 2 and the carrier-side belt 3a of the lower transport belt 3.

As shown in FIGS. 3 and 4, under the conveyance path of the cardboard sheet S ₀ is the corrugated sheet S folding guides 7 conveying direction extending long in the left-right pair vertical shape of ₀ is provided. The ends of the pair of bending guides 7 are the width dimension of the box A ₀ to be formed (the dimension between the outer end portions of the second panel P ₂ and the third panel P ₃ shown in FIG. 9 (II)). ) Are provided at substantially equal intervals, _{one of} which corresponds to the first vertical ruled line a ₁ formed on the corrugated cardboard sheet S ₀ , and the other of which is provided at a position substantially corresponding to the third vertical ruled line a _3. ing.

As shown in FIGS. 1 and 3, the first panel P ₁ and the fourth panel P ₄ of the corrugated cardboard sheet S ₀ are respectively connected to the first vertical ruled line a ₁ and the _first panel P _{4 on} the outer sides of the pair of upper transport belts 2. A pair of left and right panel bending bars 8 are provided that bend 90 ° downward along the three vertical ruled lines a ₃ .

The panel folding bar 8 extends long in the conveying direction of the corrugated cardboard sheet S ₀ , and one upstream end thereof is inclined with an upward gradient toward the upstream side, so that the corrugated cardboard sheet S ₀ conveyed by the sheet conveying apparatus 1. Facing the upper side of the first panel P ₁ and the fourth panel P ₄ , the other end on the downstream side is provided outside the downstream end of the vertical bending guide 7.

Each of the first panel P ₁ and the fourth panel P ₄ of the corrugated cardboard sheet S ₀ is 90 ° downward along the first vertical ruled line a ₁ and the third vertical ruled line a ₃ due to contact with the panel folding bar 8. It can be bent.

As shown in FIG. 1, each of the first panel P ₁ and the fourth panel P ₄ bent 90 ° downward includes the panel folding bar 8 and the other end portion on the downstream side of the panel folding bar 8. It is finally bent by approximately 180 ° by the panel folding belt 9 on which the upstream end is located.

Corrugated sheet S ₀ facing the lower side of the carrier belt 9a of the panel folding belt 9 twisting is applied is guided by a plurality of belt guide rollers 10, delivery tip of the downstream side of the carrier-side belt 9a is top The carrier belt 2 is disposed so as to face the carrier side belt 2a in the vertical direction.

As shown in FIGS. 3 to 6, a plurality of rollers R _{1 to} R _n forming press means 20 with the bending guide 7 are disposed on the other end portion on the downstream side of the pair of left and right bending guides 7. Is provided. The pressing means 20 formed by a plurality of rollers R _{1 to} R _n and the bending guide 7 flattenes the periphery of the first vertical ruled line a _{1 and} the periphery of the third vertical ruled line a ₃ of the cardboard sheet S ₀ . It is supposed to crush.

Each of the plurality of rollers R _{1 to} R _n has a flange F at one end and a tapered portion T having a roller end as a small diameter end at the other end.

The plurality of flanged rollers R _{1 to} R _n are provided at intervals in the conveyance direction of the corrugated cardboard sheet S ₀ so that the flange F faces the first panel P ₁ or the fourth panel P ₄ on the left and right. arranged on the folding guides 7 Te, facing the inner surface of the first panel P ₁ and the fourth panel P ₄ of each flange F is tapered corresponding to the bending angle of the first panel P ₁ and the fourth panel P ₄ The surface FT is used.

Further, the plurality of flanged rollers R _{1 to} R _n are arranged such that the distance from the upper surface and the outer surface of the bending guide 7 decreases as the downstream flanged roller R _n is reached. The step shapes of the peripheral portions of the first vertical ruled line a ₁ and the third vertical ruled line a ₃ of the cardboard sheet S ₀ are flattened so as to be pressed against the bending guide 7 by R _{1 to} R _n .

As shown in FIGS. 1 and 8, flat box-like cardboard sheets formed by bending the first panel P ₁ and the fourth panel P ₄ on both sides of the downstream end of the sheet conveying apparatus 1. A pair of left and right forming guides 30 for forming S _{0 so as} to have the width of the box A ₀ shown in FIG.

The forming guide 30 includes a forming belt 31, a belt guide plate 32 provided at the back of the carry-out side end of the carrier side belt 31 a facing the corrugated cardboard sheet S ₀ of the forming belt 31, and downstream of the belt guide plate 32. It comprises a plurality of rollers 33 provided on the side for guiding the forming belt 31.

Right and left pair of forming guide 30, the spacing between the opposing surfaces at the delivery tip of the carrier belt 31a is arranged as to match the width of the box A _0, cardboard at unloading end of the carrier-side belt 31a so that molded to the width of defining sheet S _0.

The forming guide 30 is not limited to the above. For example, a plurality of the grooved rollers spaced in the conveying direction of the cardboard sheet S _0, the groove inner direction and the thickness direction outer end portion of the corrugated sheet S ₀ a flat box shape by the grooved rollers It may be formed so as to be gradually pressed into a specified width dimension.

The folder gluer shown in the embodiment has the above-described structure, and when the corrugated cardboard sheet S ₀ is fed between the carrying sections of the upper transport belt 2 and the lower transport belt 3, the corrugated cardboard sheet S ₀ is connected to the upper transport belt 2. It is sandwiched from above and below by the lower conveyance belt 3 and conveyed along the upper surface of the bending guide 7 to the downstream side of the conveyance path.

While moving along the conveyance path, the first panel P ₁ and the fourth panel P ₄ of the corrugated cardboard sheet S ₀ come into contact with the folding bar 8, and the first panel P ₁ and the fourth panel P ₄ are bent downward by the contact. It is done.

In the process in which the first panel P ₁ and the fourth panel P ₄ are bent close to 90 °, the corrugated cardboard sheet S ₀ has rollers R _{1 to} R _n whose distance from the bending guide 7 is successively reduced. , And at the time of passing, the rollers are sequentially pressed by the press of the plurality of rollers R _{1 to} R _n , and the step shape of the peripheral portion of the first vertical ruled line a _{1 and} the third vertical ruled line a ₃ is flattened. It is.

By the crushing, the strength of each peripheral portion of the first vertical ruled line a _{1 and} the third vertical ruled line a ₃ is weakened, and the weakened part is bent along the bending guide 7, so that a step-shaped structure is obtained. Without being affected, the bent part is always almost constant.

When the first panel P ₁ and the fourth panel P ₄ are bent downward by approximately 90 °, the panel folding belt 9 starts to contact the first panel P ₁ and the fourth panel P ₄ , and the panel folding belt 9, the first panel P ₁ and the fourth panel P ₄ are further bent in the same direction and finally bent by 180 ° to form a flat box shape.

Corrugated sheet S ₀ of the flat box-like, as shown in FIGS. 7 and 8, enters between the left and right pair of forming guide 30, while being formed into a width dimension of the defined by the forming guide 30, the 1 panel P ₁ is bonded with an adhesive superimposed bonding margins P _5.

At the time of forming by the forming guide 30, the strength of each peripheral portion of the first vertical ruled line a _{1 and} the third vertical ruled line a ₃ of the corrugated cardboard sheet S ₀ is weakened in advance by the pressing means 20. to the dimensional correction, it is possible to obtain an excellent flat box a ₀ of the rectangular high very dimensional accuracy.

As shown in the embodiment, the press means 20 crushes the step shape of each peripheral portion of the first vertical ruled line a _{1 and} the third vertical ruled line a ₃ of the cardboard sheet S ₀ to weaken the strength, and the weakened portion the by folding along the folding guides 7, can be folded accurately bent portion constantly corrugated sheet S ₀ smoothly as almost constant. Thus molded in a molding guide 30 sites bending that occasion , it is possible to obtain an excellent flat box a ₀ very dimensional accuracy is high rectangular.

In the embodiment, the folder gluer is shown in which the first panel P ₁ and the fourth panel P ₄ of the corrugated cardboard sheet S ₀ are bent downward by 180 °. However, the folder gluer is not limited to this, and A folder gluer in which the first panel P ₁ and the fourth panel P ₄ are bent 180 ° upward may be used.

In the embodiment, the press means 20 is positioned at a relatively upstream position where the first panel P ₁ and the fourth panel P ₄ of the corrugated cardboard sheet S ₀ are bent by approximately 90 °, that is, at a position at an early stage of bending. The first vertical ruled line a _{1 and} the third vertical ruled line a ₃ are crushed flatly so as to be folded more accurately and accurately. However, the position of the pressing means 20 is limited to this. the invention is not, the corrugated sheet S ₀ may if position to bend the first panel P ₁ and the fourth panel P ₄ approximately 180 ° folding being fed to the sheet conveying device 1.

Furthermore, although the press means 20 is composed of the bending guide 7 and the plurality of flanged rollers R _{1 to} R _n , the press means 20 is not limited to this. For example, a pair of rollers that are vertically opposed to the conveyance path of the corrugated cardboard sheet S ₀ reaching the folding guide 7 is provided at an interval in the conveyance direction of the corrugated cardboard sheet S ₀ , and the opposed distance between the pair of rollers reaches the downstream side. gradually decreases as the pair of rollers, may be obtained by gradually pushing collapsing as the peripheral portion of the first vertical lines a ₁ and the third vertical lines a ₃ in each pair of rollers.

The perspective view which shows embodiment of the folder gluer which concerns on this invention Front view of FIG. Enlarged view of the press means shown in FIG. Sectional view along line IV-IV in FIG. Transverse plan view of the pressing means shown in FIG. Plan view of FIG. Longitudinal side view of the forming guide shown in FIG. Sectional drawing which shows the shaping | molding state of a flat box-shaped cardboard sheet (I) is a perspective view showing a cardboard sheet, (II) is a perspective view of a flat box formed by the cardboard sheet Plan view showing a defective box

Explanation of symbols

S ₀ corrugated sheet P ₅ joining allowance a ₁ 1st vertical ruled line a ₂ 2nd vertical ruled line a ₃ 3rd vertical ruled line a ₄ 4th vertical ruled line 1 Sheet conveying device 7 Bending guide 20 Press means R ₁ roller R _n roller

Claims (2)

The four panels divided by the ruled line and the corrugated cardboard sheet having a joining margin continuously provided at the side edge of the one side panel are conveyed in one direction by the sheet conveying device. In the folder gluer that is bent approximately 180 ° in the opposite direction along the inner ruled line and joins the overlapping portion of the joining margin and the other panel to form a flat box,
A press that flatly crushes the periphery of the ruled line inside the panels on both sides of the cardboard sheet in the cardboard sheet conveyance path from when the cardboard sheet is fed into the sheet conveyance device until the panels on both sides are bent by approximately 180 °. Folder gluer characterized by providing means.   When the pressing means is a pair of left and right folding guides provided along the ruled lines inside the panels on both sides of the cardboard sheet, and the panels on both sides of the cardboard sheet are folded along the folding guides, It consists of a plurality of flanged rollers that press the peripheral part of the inner panel of the panel against the bending guide and flatten it, and the inner surface of the flanged roller facing the bending panel corresponds to the bending angle of the panel The folder gluer according to claim 1, wherein the distance to the bending guide is reduced as it reaches the downstream flanged roller.

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