JP4463036B2 - Folder gluer - Google Patents

Description

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

A corrugated cardboard sheet S ₀ shown in FIG. 13 is conventionally known as a material for forming a flat box. 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. In such a direction, the flat box A ₀ as shown in FIG. 14 is formed by bending 180 ° in the direction to be bonded and bonding the overlapping portion of the joining allowance P ₅ and the first panel P ₁ to each other.

Further, a corrugated cardboard sheet S ₁ shown in FIG. 15 is known as a material for forming a flat box. This corrugated cardboard sheet S ₁ is composed of two strips consisting of an outer ruled line l ₁ and an inner ruled line l _2, which are an inner vertical ruled line a ₁ inside the first panel P ₁ and a third vertical ruled line a ₃ inside the fourth panel P ₄ . It differs from the corrugated cardboard sheet S ₀ shown in FIG. 13 in that it is a parallel ruled line. In the corrugated cardboard sheet folding apparatus described in Patent Document 2, the corrugated cardboard sheet S ₁ is used to bend the first panel P ₁ and the fourth panel P ₄ , and to join the joining margin P ₅ and the first panel P ₁ . A flat box is formed by bonding.
Japanese Utility Model Publication No. 6-21926 JP-A-10-296885

By the way, in the folder gluer described in Patent Document 1 and the corrugated sheet folding apparatus described in Patent Document 2, the first on both sides is brought into contact with the fixed folding bars provided on both sides of the corrugated sheet transport path. Since the panel P ₁ and the fourth panel P ₄ are bent, the first panel P ₁ and the fourth panel P ₄ are inclined due to the frictional resistance acting on the contact portion with the folding bar, and the first panel P _1. When, as shown in the fourth panel P ₄ Togazu 12 (I), relative first panel P ₁ and the inclined states and bonding margins P ₅ is bonded, poor flat box a ₁ is formed There was a problem of being.

  The problem of the present invention is that even if a defective box body in which the first panel and the fourth panel are relatively inclined is formed, this can be corrected and a good box body is always formed. Is to provide a folder gluer.

  In order to solve the above-described problems, in the present invention, the cardboard sheet having a joining margin continuously provided on the side edges of the four panels and one side panel divided by the vertical ruled lines is conveyed in one direction. During the conveyance, the panels on both sides are bent 180 ° along the inner vertical ruled line, and the joining margin connected to the side edge of the panel on one side and the overlapping part of the panel on the other side are adhered to each other. In a folder gluer in which a flat box is formed and the box is transported downstream, it can be engaged with the transport path of the flat box with respect to the rear edge in the transport direction of the box A first box conveying means that has a pressing member and conveys the box body downstream by movement of the pressing member in one direction, and supports the box body conveyed by the first box conveying means. Then transport it downstream, and position the front edge of the box in the transport direction on the transport surface. And a second box transport means to which a positioning member to be determined is attached. The pressing member of the first box transport means and the positioning member of the second box transport means sandwich the box from the front and rear. The moving speed of the positioning member is set to be lower than the moving speed of the pressing member so as to be conveyed.

  If comprised as mentioned above, a flat box body is moved back and forth by the pressing member and the positioning member due to the relative speed difference between the pressing member of the first box conveying means and the positioning member of the second box conveying means. Since it can be transported to the downstream side in a state where it is pinched from the side, if the folded panels on both sides are relatively tilted, the tilt of the panels on both sides can be corrected, and the box is always good. Can be formed.

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, a folder gluer that forms a flat box A ₁ from the cardboard sheet S ₁ shown in FIG. 15 is shown.

As shown in FIGS. 1 and 2, the folder gluer is of the first panel P ₁ and the fourth panel P ₄ of the corrugated board sheet S ₁ folding and, the first panel P ₁ and bonding margins P ₅ overlapping portion of It consists of a bent part 1 that forms a flat box A ₁ by bonding and a correction part 20 that corrects the box A ₁ formed in the bent part 1.

The folding unit 1 has a pair of upper transport belts 2 and a pair of lower transport belts 3 as a sheet transport device for transporting the corrugated cardboard sheet S ₁ to the downstream side.

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 ₁ on the first vertical ruled line a ₁ side, and the other is the third panel of the cardboard sheet S ₁ . 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. 7 to 9, suction holes 4 are formed in each of the upper conveyance belts 2. Further, a suction box 5 is provided on the carrier side belt 2a below the upper conveyance belt 2, and a slit 6 extending in the moving direction of the carrier side belt 2a is formed in the belt guide plate 5a below the suction box 5. 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, corrugated board sheet S ₁ is conveyed is absorbed 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 is provided below each upper conveyor belt 2 so that the carry-in end thereof substantially coincides with the carry-in end of the upper carry belt 2. ing.

Upper carrier side belt 3a of the lower conveyor belt 3 has become the corrugated fiberboard sheet S ₁ at the carrier side belt 2a of the upper conveyor belt 2 from above and below so as to sandwich, corrugated board sheet S ₁ 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 FIG. 4, step Below the conveyance path of the ball seat S _1, cardboard elongated in the conveying direction of the sheet S _1, a pair of first folding guide 7 and the pair of second folding guide 8 and cardboard It is provided by shifting the position in the conveying direction of the sheet S _1.

As shown in FIG. 5, one of the pair of first folding guides 7 is provided at a position corresponding to the outer ruled line l _{1 of} the third vertical ruled line a ₃ formed on the cardboard sheet S ₁ , and the other Is provided at a position corresponding to the outer ruled line l _{1 of} the first vertical ruled line a _{1 in} the same manner as shown in FIG.

Further, as shown in FIG. 7, one of the pair of second bending guides 8 is provided at a position corresponding to the inner ruled line l _{2 of} the third vertical ruled line a ₃ , and the other is shown in FIG. Similarly to the above, the first vertical ruled line a ₁ is provided at a position corresponding to the inner ruled line l ₂ .

As shown in FIG. 3, each outer side of the pair of upper transport belt 2, the corrugated sheet outer borders l ₁ of each first vertical line a ₁ of the first panel P ₁ and the fourth panel P ₄ of S ₁ A pair of panel bending belts 9 (first bending means) are provided as panel bending means for bending 180 ° downward along the outer ruled line l ₁ of the third vertical ruled line a ₃ .

Corrugated sheet S ₁ 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 carrier-side belt 9a is top conveyor belt 2 The carrier side belt 2a is arranged so as to face the upper and lower sides.

Carrier-side belt 9a of the pair of panel folding belts 9, push down the first panel P ₁ and the fourth panel P ₄ of the cardboard sheet S _1, the the first panel P ₁ and the fourth panel P ₄ respectively 1 The sheet is bent by 90 ° along the outer ruled line l ₁ of the vertical ruled line a ₁ and the third vertical ruled line a ₃ and then bent by 90 °. At this time, the pair of first bending guides 7 guide the movement of the outer ruled line l ₁ until the first panel P ₁ and the fourth panel P ₄ are bent 90 ° downward.

In order to make the first panel P ₁ and the fourth panel P ₄ bend 90 ° along the outer ruled line l ₁ and then bend completely 90 °, the first panel P ₁ and the fourth panel P ₄ Is disposed at one end of the folding bar 11 extending in the conveying direction on the outer side of the 90 ° bent position, and the other end of the second panel P ₂ and the third panel P ₃ of the corrugated cardboard sheet S ₁ . The first panel P ₁ and the fourth panel P ₄ which are disposed below and bent by 90 ° are further bent by 90 ° in the same direction by contact with the folding bar 40.

As shown in FIG. 3, the first vertical ruled line a ₁ and the third vertical ruled line a of the corrugated cardboard sheet S ₁ shown in FIG. 15 are provided between the pair of upper conveying belts 2 and the panel folding belts 9 provided on the outer sides thereof. ₃ of the outer borders l ₁ and the inner borders l fold forming belt 12 of the portion P ₆ between the _two as a second bending means for bending 90 ° folding along the inside border l _2, respectively.

  One end of the folding belt 12 faces a position slightly offset downstream from the carry-in end of the upper conveyor belt 2, and the other end is arranged at a position substantially corresponding to the carry-out end of the panel folding belt 9. Yes.

The carrier-side belt 12a below the folding belt 12 is guided by a plurality of belt guide rollers 13 in a range from a position slightly offset toward the downstream side from the downstream end of the first folding guide 7 to the carry-out end. The torsion is applied, and a portion P ₆ between the outer ruled line l ₁ and the inner ruled line l ₂ of the corrugated cardboard sheet S ₁ is lowered downward along the inner ruled line l ₂ guided by the second folding guide 8 at the twisted belt portion. It is designed to bend 90 °.

In the bent portion 1 having the above-described configuration, when the corrugated board sheet S ₁ between loading unit of the upper conveyor belt 2 and the lower conveyor belt 3 comes sent, the corrugated board sheet S ₁ is an upper conveyor belt 2 and a lower conveyor belt 3 is sandwiched from above and below and conveyed downstream along the first bending guide 7. In its transport course, the carrier side belt 9a of the panel folding belt 9 presses down each panel P _1, P ₄ in contact with the first panel P ₁ and the fourth panel P _4, by the carrier-side belt 9a The first panel P ₁ and the fourth panel P ₄ are bent 90 °.

At this time, the first panel P ₁ and the fourth panel P ₄ are bent along the outer ruled line l ₁ guided by the first folding guide 7.

Although FIG. 7 shows only the bent state of the fourth panel P ₄ , the first panel P ₁ is bent in the same manner.

When the first panel P ₁ and the fourth panel P ₄ are bent downward by approximately 90 °, the corrugated sheet S ₁ is transferred from the first folding guide 7 to the second folding guide 8, and the second folding guide 8. Thus, the inner ruled line l ₂ of each of the first vertical ruled line a ₁ and the fourth vertical ruled line a ₄ is supported.

At this time, twisting beginning of the carrier belt 12a in the fold forming belt 12 begins to press the portion P ₆ between the outer borders l ₁ and the inner borders l ₂ of the cardboard sheet S _1, is the portion P ₆ by the pressing It can be bent downward.

In this case, the portion P ₆ is bent along the inner ruled line l ₂ of the third vertical ruled line a ₃ guided by the second folding guide 8 as shown in FIG. The first vertical line a ₁ parts is similar.

Further, when the first panel P ₁ and the fourth panel P ₄ are bent downward by approximately 90 °, the first panel P ₁ and the fourth panel P ₄ start to contact the folding rod 11, and the folding rod 11 The panels P ₁ and P ₄ are further bent in the same direction by the contact with the belt and the pressing of the carrier side belt 9 a of the panel bending belt 9.

When the cardboard sheet S ₁ reaches the carry-out end of the panel folding belt 9, the portion P ₆ between the outer ruled line l ₁ and the inner ruled line l ₂ is bent 90 ° in the vertical direction as shown in FIG. At the same time, the first panel P ₁ and the fourth panel P ₄ are bent by 180 °, and the joining margin P ₅ and the first panel P ₁ connected to the side edge of the fourth panel P ₄ are connected. overlap each other, through the pre-applied adhesive on the bonding margins P _5, bonding margins P ₅ is bonded to the first panel P _1, flat box a ₁ is formed.

As described above, the bent portion 1, the outer border is guided by the panel folding belt 9 as a first folding unit first panel P ₁ and a fourth panel P ₄ in the first folding guide 7 l ₁ is bent by 90 ° and then bent by 90 °, and the portion P ₆ between the outer ruled line l ₁ and the inner ruled line l _{2 is second} bent by the folding belt 12 as the second folding means. The cardboard sheet S ₁ is bent by 90 ° along the inner ruled line l ₂ guided by the guide 8, and the distance between the outer ruled line l ₁ and the inner ruled line l ₂ is substantially equal to the thickness of the cardboard sheet S _1. Thus, the cardboard sheet S ₁ can be folded along the outer ruled line l ₁ and the inner ruled line l ₂ with extremely high accuracy.

For this reason, it is possible to obtain a flat box A ₁ with high bending accuracy in which the overlapping width of the first panel P ₁ and the joint allowance P ₅ is constant, and by opening the box A ₁ , a true square is obtained. Corrugated cardboard boxes with high dimensional accuracy can be obtained.

In the folding part 1 as described above, the first panel P ₁ and the fourth panel P ₄ are bent in contact with the fixed folding bar 11, so that the frictional resistance acting on the contact part with the folding bar 11 is affected. As shown in FIG. 12 (I), the first panel P ₁ and the fourth panel P ₄ are relatively flat, and the first panel P ₁ and the joint allowance P ₅ are bonded to each other to form a defective flat box. there is a possibility that the body A ₁ is formed.

In the correction part 20 provided on the downstream side of the bent part 1, when the first panel P ₁ and the fourth panel P ₄ are relatively inclined, the correction is performed.

As shown in FIG. 10 and FIG. 11, the correction unit 20 includes a pair of claw-conveying belts 21 as a first box-conveying means, and a first part provided below the carry-out end of the claw-conveying belt 21. And a guide plate 23 provided between the double-row correction belts 22 for guiding the movement of the box A ₁ .

  As shown in FIG. 3, the claw-conveying belt 21 is provided inside each of the pair of upper conveying belts 2, and the carry-in end is located between the carry-out end of the lower carry belt 3 and the carry-in end of the panel folding belt 9. In addition, the carry-out end is located downstream from the carry-out end of the panel folding belt 9.

The pair of pawl conveyor belt 21 pressing the pawl 24 as can contact pressing member in the transport direction rear edge of the cardboard sheet S ₁ is provided at regular intervals. The claw-conveying belt 21 is timed to convey the corrugated cardboard sheet S ₁ so that the push claw 24 is engaged with the trailing edge of the corrugated cardboard sheet S ₁ conveyed by the upper conveying belt 2 and the lower conveying belt 3. The conveyance speed of the claw-conveying belt 21 and the conveyance speed of the corrugated cardboard sheet S ₁ by the upper conveyance belt 2 and the lower conveyance belt 3 are the same.

As shown in FIGS. 10 and 11, a bar-shaped positioning member 25 for positioning the front end edge of the box A _{1 in} the transport direction is stretched between the double-row correction belts 22.

The double-row correction belts 22 are synchronized with the transport speed of the box A ₁ so that the positioning member 25 is disposed slightly downstream from the front edge in the transport direction of the box A ₁ transported by the transport belt 21 with the pawl. Thus, it is moved in the direction of the arrow in FIG. Further, the moving speed of the positioning member 25 of the correction belt 22 is set lower than the transport speed of the box A ₁ transported by the push claw 24.

Now, when the flat box A ₁ is sent from the bent part 1 to the correction part 20, the box A ₁ is supported by the carrier side belt 22 a on the upper side of the double-row correction belt 22 and the guide plate 23. In this case, faces the positioning member 25 to the front edge of the box A _1, since the movement speed of the positioning member 25 is slower than the moving speed of the pushing pawl 24 for conveying the box A _1, the push pawl 24 and the positioning member 25 Due to the relative speed difference, the push claw 24 is pressed against the positioning member 25 while transporting the box A ₁ , and the box A ₁ is sandwiched from the front and rear by the positioning member 25.

For this reason, as shown in FIG. 12I, in the case of a defective box A ₁ in which the first panel P ₁ and the fourth panel P ₄ are relatively inclined, the box A ₁ is connected to the positioning member 25. By being sandwiched by the push claws 24 from the front and rear, the inclinations of the first panel P ₁ and the fourth panel P ₄ are corrected.

As described above, the correction unit 20 automatically holds the box A ₁ between the positioning member 25 and the push claw 24 from the front and rear and conveys the relative inclination between the first panel P ₁ and the fourth panel P _4. manner can be modified, as shown in FIG. 12 (II), can always be obtained the box a ₁ non-defective.

In the embodiment, the folder gluer that forms the flat box A ₁ from the cardboard sheet S ₁ shown in FIG. 15 in which the first vertical ruled line a ₁ and the third vertical ruled line a ₃ are parallel ruled lines has been described as an example. Folder gluer is not limited to this. For example, the second bending guide 8 shown in FIG. 4 and the bending belt 12 shown in FIGS. 1 to 3 are omitted, and a flat box A ₀ is formed from the corrugated cardboard sheet S ₀ shown in FIG. Folder gluer.

The top view which shows embodiment of the folder gluer concerning this invention Front view of FIG. The perspective view which shows the bending part of the folder gluer shown in FIG. The perspective view which shows a 1st bending guide and a 2nd bending guide Sectional drawing along the VV line of FIG. Sectional view along line VI-VI in FIG. Sectional view along line VII-VII in FIG. Sectional view along line VIII-VIII in FIG. Sectional view along line IX-IX in FIG. The front view which shows the correction part of the folder gluer shown in FIG. Plan view of FIG. (I) is a plan view showing the state of the box before correction, (II) is a plan view showing the state after correction Perspective view showing cardboard sheet The perspective view of the flat box formed of the corrugated cardboard sheet of FIG. Plan view showing another example of cardboard sheet

Explanation of symbols

S ₁ 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 21 Conveyor belt with claw (first box transport means)
22 Straightening belt (second box transport means)
24 Pushing claw (pressing member)
25 Positioning member

Claims (1)

  The four panels divided by the vertical ruled lines and the corrugated cardboard sheet having the joining margin connected to the side edge of the one side panel are conveyed in one direction. During the conveyance, both the panels are used as the inner vertical ruled lines. Bend 180 ° along the edge of the panel on one side and the overlapping part of the panel on the other side is bonded to each other to form a flat box. In the folder gluer that is to be transported to the flat body, the flat box transport path has a pressing member that can be engaged with the rear end edge in the transport direction of the box, A first box transport means for transporting the box body to the downstream side by movement and a box body transported by the first box transport means for transporting to the downstream side, and the box body on the transport surface 2nd box carrying to which the positioning member which positions the front-end edge of the conveyance direction of this was attached And the moving speed of the positioning member is adjusted so that the pressing member of the first box conveying means and the positioning member of the second box conveying means sandwich and convey the box from the front and rear. Folder gluer characterized by being slower than the moving speed.

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