JPS6130964B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] When wrapping an article with a box made of cardboard or the like,
Sheet A is the same as this unfolded state (Figure 7)
Pre-fabricated A ₂ side, which will become the top wall, is bent at right angles from the crease line A ₁ , and A ₁ , which will become the bottom wall, is made in advance.
After placing the packaged object B on the surface of A ₁ (FIG. 8), the inner flaps A ₅ and A are placed as shown in FIGS. 10 to 13. _6. The lower flaps A ₃ , A _{4 ,} etc. may be sequentially bent from each fold line to finally form a box shape as shown in FIG. 14 to complete the packaging work.

The present invention relates to a method and apparatus for folding a flap extending outwardly from a horizontal paperboard along a fold line so as to stand obliquely upward relative to the paperboard.

[Conventional technology]

This work of folding the flap can be done by guiding the flap to a guide rod placed on the side of the conveyance path while transporting the folding bag, or by stopping the bag to be assembled and turning the pusher. This is usually done by activating it.

[Problem that the invention seeks to solve]

However, when these methods are adopted, the flaps extending outward from the horizontal paperboard are folded in either the up or down direction before being completely bent at right angles to the paperboard. The disadvantage is that it cannot be held securely so that it does not move. This flap may be folded once at the crease line and a crease is made in advance at that part (referred to as pre-folding), but in this case the flap is particularly susceptible to movement, so It is particularly convenient for other operations to hold this position securely before completely bending it to a right angle. For example, when pushing the packaged item B onto the surface _A1 as shown in Fig. 9, when folding the inner flaps _A5 and _A6 from the crease line, glue the inner flaps _A5 and _A6 . This is because when applying a chemical, the flap must be held securely so that it does not move in either the up or down direction, otherwise the flap will get in the way and interfere with the above-mentioned work.

[Means for solving problems]

The present invention is aimed at overcoming these drawbacks and is characterized by the fact that the length is increased from the horizontal paperboard to the flap extending outwardly through the fold line. A different set of upper and lower operating rods 3 and 4 are operated upward from a direction in which the shorter operating rod 3 contacts the flap first, and the shorter operating rod 3 of the upper and lower sets of operating rods 3 and 4 contacts the flap first. 3 is positioned on the opposite side beyond the flap, and the other long operating rod 4 is used to push the flap so that the flap stands diagonally upward from the fold line with respect to the horizontal paperboard.

The device of the present invention is also characterized by the fact that there are two blocks on the side of the stand on which the box is placed, which has a flap extending outward from the horizontal paperboard through the fold line.
A pair of operating rods 3 and 4 of different lengths are provided inside the block 2 at a predetermined interval vertically, so that the block 2 can move up and down.

[Effect]

When the block 2 is moved upwardly toward the flap extending outwardly from the horizontal paperboard through the fold line, from the direction in which the short operating rod 3 contacts the flap first, the short operating rod 3 As the flap moves forward, it gradually bends diagonally upward from the crease line, but when it reaches a certain point, the flap's rigidity causes it to cross over the operating rod 3 that was in contact with its outer edge. The flap enters the lower side, and the flap is positioned between a pair of upper and lower operating rods 3 and 4 of different lengths, and is supported by the other long operating rod 4 located on the lower side, against the paperboard. Forced to stand diagonally upward.

In this way, the flap extending outward from the horizontal paperboard through the fold line is once held and regulated in an upwardly inclined state by the pair of upper and lower operating levers 3 and 4.

〔Example〕 The present invention will be explained based on drawings which are examples.

In the example, when the present invention is applied when the two left and right flaps A ₃ and A ₄ located on the lower side are bent so that the flaps are inclined diagonally upwards with respect to the paperboard that is the first side of A ₁ , As I will explain, the bending work is done in the same way on both the left and right sides, so only one side, that is, the _A4 side, will be explained in detail.

The box A', which is in the middle of being bent as shown in Fig. 8, is fed into the space between the machine frames 1 and 1 from the direction of the arrow in Fig. 3 while maintaining its shape, and is placed on a horizontal platform (not shown) in between. It will be placed.

In other words, side _A is on the table and its flap is
A ₃ and A ₄ extend upward and downward in Figure 3;
Furthermore, the _A2 side is established at right angles to the _A1 plane, as shown in FIGS. 1 and 2.

Blocks 2, 2 are provided on both sides of the stand (appearing on the upper and lower sides in FIG. 3) so as to be movable up and down, and on the inside thereof, operating rods 3, 4 are respectively attached in pairs parallel to each other.

The lower operating lever 4 is made to project inward and wider than the upper operating lever 3, and both operating levers 3 and 4 are spaced apart to some extent.

A cylinder 5 (Figs. 1 and 2) for simultaneously moving the left and right blocks 2, 2 up and down is provided below the stand, and the tip of its piston rod 6 is pivotally connected to the tip of a rod 7. The base of the rod 7 is fixed to a horizontal shaft 8 that bridges between the machine frames 1 and 1.

The bases of rods 9 for each block 2 are fixed on the horizontal shaft 8, and the tips thereof are connected to shafts 11 extending below the blocks 2 via connecting rods 10, respectively.

In other drawings, 12 (Fig. 1, Fig. 2)
is a bracket, and a shaft 11 passes through the center line of the bracket, and guides the block 2 as it moves up and down.

Reference numeral 13 denotes a cylinder provided below the stand, which undulates the flap bending member 14 that bends the inner flaps A ₅ and A ₆ from the fold line, and in conjunction with this, the front edge of A ₇ that is to become the side wall. The member 15 holding down is undulated.

Next, the operation of the apparatus shown in the example will be explained.

The box A', which is in the middle of being bent as shown in Fig. 8, is sent from the direction of the arrow in Fig. 3 to between the machine frames 1 and 1 while maintaining its shape, and is placed on a horizontal platform (not shown) in between. will be placed on.

At this time, the _A1 side is inserted on the table, and the front edge of _A7 is inserted into the groove 15a (the direction is the longitudinal direction) of the holding member 15 lying horizontally,
The flaps A ₃ and A ₄ are free and extend outward from the base (upper and lower sides in FIGS. 3 and 4).

Cylinder 5 operates and its piston rod 6
As the shaft moves in the direction of the arrow in Fig. 1, the rods 7 and 9 operate as shown by the broken lines in the figure, and the shaft 11 moves upward via the connecting rod 10, and the block 2 at its upper end moves upward on both the left and right sides. .

That is, as the block 2 moves upward from the state shown in Fig. 4, the upper short operating rod 3 advances while pushing up the flap _A4 , and accordingly, the flap _A4 is sequentially bent from the fold line _a3 . I'm going, but
When it reaches a certain point, the rigidity of the flap A ₄ causes it to go beyond the operating rod 3 that was in contact with the outer edge of the flap A 4 and go under it, and the flap A ₄ becomes the fifth flap.
As shown in the figure, it is located between a pair of upper and lower operating levers 3 and 4, and is supported by the lower operating lever 4 to stand obliquely upward relative to the _A1 plane.

The same operation is performed on the flap _A3 side, and the flap _A3 is also bent from the crease line _a2 to stand diagonally upward.

The left and right flaps A ₃ and A ₄ are thus held and regulated in an upwardly inclined state by a pair of upper and lower operating rods 3 and 4.

Therefore, when pushing the packaged item B in the direction of _{the arrow} in FIG.
It is convenient to place it on the A ₁ side). Even if the object to be packaged B is a collection of many small items (loose items) stacked together, these items can be guided to a predetermined position in an orderly manner.

Next, when the cylinder 5 is actuated and its piston rod 6 is moved in the opposite direction to the above, the left and right blocks 2, 2 move downward in the opposite direction to the above case, and the left and right blocks 2 are moved by the short operating rod 3 on the upper side. flap of
A ₃ and A ₄ are tilted diagonally downward as shown in Figure 6.

Therefore, by operating the cylinder 13, the flap bending member 14 is raised, and when the inner flaps A ₅ , A ₅ , A ₆ , A ₆ are respectively bent, the flaps A ₃ , A ₄ does not get in the way, and the bending work can be done particularly smoothly.

After that, when the cylinder 5 is operated again and the piston rod 6 is retracted, the left and right blocks 2, 2 are raised one after another, and the flaps A ₃ and A ₄ are bent upward again by the lower operating rod 4. When the block 2 rises to a certain point, the stiffness of the flap causes it to again cross the operating rod 3 and be positioned above it.

Thereafter, the folded flaps are moved, for example _, to the right in _FIG .
As shown in the figure, it can be bent at right angles to the _A1 plane.

In addition, as shown in the example, if the flaps extending outward are once bent in the opposite direction, the work of folding the inner flaps can be done particularly smoothly, and there are no errors in the folding work. It will be close.

〔Effect of the invention〕

According to the method of the invention, the flap extending outwardly from the paperboard through the fold line is moved by two operating rods 3 and 3,
Since the flap can be held securely at 4, there is an effect that the flap does not fluctuate. Furthermore, when pushing the packaged item into a predetermined position inside the flap, the flap, which is securely held by the two upper and lower operating rods 3 and 4, acts as a guide.
This is convenient because there is no need to provide a separate guide.

Furthermore, by using the device according to the present invention, the flap, which is relatively prone to fluttering, can be regulated and securely held from both the top and bottom directions, making it possible to perform folding operations of the flaps and wrapping operations with folding without any malfunction. Furthermore, even if the object to be packaged is an aggregate of loose objects, it is possible to reliably package the objects without scattering them.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a front view of the device, FIG. 2 is a front view after operation, FIG. 3 is a plan view, and FIGS. 4 to 6 are views of the folding flap. FIGS. 7 to 14 are side views showing the bending state in the order of steps, and perspective views showing the bending steps in order from the sheet to the completed folding. 1...Machine frame, 2...Block, 3, 4...Operation rod, _A3 , _A4 ...Flap, _A5 , _A6 ...Inner flap, _a1 , _a2 , _a3 ...Fold line , B... Item to be packaged.

Claims (1)

[Claims] 1. A pair of upper and lower operating levers 3 and 4 of different lengths are moved toward the flap extending outward from the horizontal paperboard through the fold line, with the shorter operating lever 3 contacting the flap first. The short operating lever 3, which comes into contact with the flap first among the upper and lower operating levers 3 and 4, is positioned on the opposite side beyond the flap, and the other long operating lever 4 is used to move the flap upward. A method for folding a flap part of a baguette, which is characterized by pressing the flap and making the flap stand diagonally upward from the fold line with respect to a horizontal paperboard. 2. From the state in which the flap is erected diagonally upwards with respect to the horizontal paperboard using the long operating lever 4, both operating levers 3 and 4 are operated in the opposite direction, and the flap is pushed with the other short operating lever 3 to once move in the opposite direction. 2. A method for folding a flap portion of a bag according to claim 1, wherein the flap portion is bent in the following manner. 3 Arrange block 2 on the side of the stand on which the box is placed, which has a flap extending outward from the horizontal paperboard through the fold line, and inside the block 2, there are blocks of different lengths arranged vertically at predetermined intervals. A set of operating rods 3 and 4 are provided,
The block 2 is a folding device for the flap portion of a box which moves up and down.