JP3503660B2 - Crease imparting device for cardboard for cushioning material - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crease imparting device for imparting a crease to a cardboard for cushioning material.

[0002]

2. Description of the Related Art When transporting electric products and other various products, it is common to store the products in a cardboard box while being supported by a cushioning material. Conventionally, the cushioning material used at this time was often formed of styrofoam. However, since it is difficult to dispose of styrofoam, it has recently been desired to form a cushioning material using corrugated board. When making a cushioning material using corrugated board, usually, one corrugated board is cut into a predetermined shape, and a fold line or a half cut line is further formed at a predetermined position, and the fold line or the half cut line is formed. By folding the cardboard as a boundary, a cushioning material having a predetermined shape is formed.

Conventionally, in a factory or the like, when an electrical product or the like is stored in a corrugated cardboard box for transportation while being supported by a corrugated cardboard cushioning material, the corrugated cardboard is manually folded and cushioned in a factory production line. It was common to carry out product storage work while assembling materials. However, the corrugated cardboard folding work requires a very large force, and if this work is continued for a long time, the worker's body may be adversely affected.

The crease imparting device according to the present invention allows a corrugated cardboard to be preliminarily creased, and when a worker manually folds the corrugated cardboard to assemble the cushioning material, the work can be performed very easily. The main purpose is to

Conventionally, a cushioning material forming device is not intended to give a crease but a cushioning material is automatically formed by automatically folding a single corrugated board along a folding line. It has been known. However, in this forming apparatus, each part of the corrugated board is forcibly folded by a pressing member that is moved by an air cylinder or the like, and the corrugated board may be bent or damaged at a place other than the folding line. Further, in this conventional cushioning material forming apparatus, the installation positions of the plurality of pressers installed corresponding to the respective parts of the corrugated board are unique locations corresponding to the structures and dimensions of the individual cushioning materials. When forming different cushioning materials, etc., each presser must be individually attached to a different place, and the attachment work requires a long time.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is a crease that a corrugated board is always bent in a certain direction at a fold line or a half cut line. It is a first object of the present invention to provide a folding habit imparting device capable of stably and accurately imparting a crease and not applying an unreasonable force for damaging the corrugated board to the corrugated board during processing for imparting the crease. To aim.

A second object of the present invention is to provide a folding habit imparting device which can easily cope with bending of each part of the corrugated board when the structure and size of the cushioning material are variously changed.

[0008]

In order to achieve the first object, a crease imparting device for a corrugated board according to claim 1 is a corrugated board which is formed into a cushioning material by being folded, A crease imparting device for imparting a crease to a corrugated board having an upright portion and a roll-up portion defined by a fold line, wherein the upright portion is bent in a direction opposite to the upright direction and a mountain fold crease portion is formed in the upright portion. The present invention is characterized by having upright portion mountain folding means for forming a roll, preliminary lifting means for preliminarily lifting the rolled-up portion by a small angle in the rolled-up direction, and rolling-up means for lifting the rolled-up portion at a large angle.

The standing portion may be divided by a fold line or a half-cut line,
Alternatively, it may be divided by both the fold line and the half cut line.

The roll-up means is to lift the roll-up portion of the corrugated board to a large angle at which a sufficient crease can be formed. On the other hand, the preliminary lifting means is a means for lifting the rolled-up portion of the corrugated board by a small angle, for example, an angle of about 10 ° prior to such a rolled-up operation. This pre-lifting means can be configured by any structure.For example, a corrugated cardboard mounting table that supports the corrugated cardboard outside the roll-up boundary folding line of the roll-up portion, and a corrugated cardboard placed on the corrugated cardboard mounting table are rolled-up boundaries. It can be constituted by a pre-lifting pressing pin that presses the cardboard mounting table to a position below the corrugated cardboard mounting surface inside the folding line.

A mountain fold portion is formed in the rising portion of the corrugated board by the rising portion mountain folding means, and then the rolling portion of the corrugated board is preliminarily lifted to a small angle by the preliminary lifting means, and then the rolling portion is lifted by the rolling up means. By rolling up to a sufficiently large angle, it is possible to reliably and stably give the desired corrugation to the corrugated board. However, when higher reliability is required, it is desirable to provide an upright pressing pin for pushing up the upright portion of the corrugated board in the upright direction. As a result, the standing portion can be surely raised in the predetermined standing direction.

The rolling-up means for rolling up the rolled-up portion of the corrugated board can be constituted by any structure, for example, by a lifting member that moves straight in an oblique direction from a downstream position in the rolling direction to an upstream position. , The roll-up means can be configured. Since the linear movement mechanism can be easily configured by using an air cylinder or the like, it is advantageous in simplifying the structure. When using such a lifting member, it is desirable to provide a roller at the tip of the lifting member. In this case, the lifting member and the cardboard are in rolling contact, not sliding contact, so that the lifting member can be moved smoothly and damage to the cardboard can be prevented.

The rising portion mountain folding means, the preliminary lifting means and the roll-up means may be installed together on one processing stage. However, in that case, the structure in the processing stage becomes very complicated. In contrast,
By arranging each of the upright portion mountain folding means, the preliminary lifting means and the roll-up means separately in at least two processing stages, the structure in each processing stage can be simplified.

When a plurality of processing stages are provided as described above, it is necessary to provide a corrugated board transport device for transporting corrugated board between the processing stages. This corrugated board transport device can be configured by any structure, for example, a transport rail extending in the transport direction of the corrugated board, a transport needle that moves between a position to pierce the corrugated cardboard placed on the transport rail and a position away from it, It can be constituted by a structure having a needle moving means for moving the conveying needle in the corrugated board conveying direction. In this case, it is desirable that the transport needles be provided at at least two different locations in the corrugated board transport direction. If there is only one transport needle, the corrugated cardboard may rotate around the transport needle in a horizontal plane. However, if two transport needles are pierced into the corrugated cardboard and transported, such a corrugated cardboard is used. The rotation of can be avoided.

In order to achieve the above-mentioned second object, claim 9
The crease imparting device for a corrugated cardboard described is a corrugated cardboard that is molded into a cushioning material by being folded, and a crease that gives a crease to a corrugated cardboard having an upright portion and a roll-up portion that are defined by fold lines. In the habit imparting device, a standing portion processing means for pressing the standing portion and bending the portion, and a rolled-up portion processing means for pressing the rolled-up portion and bending the portion,
Further, the present invention is characterized by having a pressing position changing means for changing the pressing position of the cardboard by the standing portion processing means and the pressing position of the cardboard by the roll-up portion processing means.

The concrete structure of the pressing position changing means is not limited to a specific structure, but, for example, a screw shaft for supporting the standing portion processing means and a screw shaft for supporting the rolled-up portion processing means are used. Configuration can be adopted. When this configuration is adopted, the screw shaft is manually or automatically rotated by using a motor or the like to change the pressing position with respect to the corrugated board.

Further, when the standing portion is raised by bending, it is conceivable that the standing pressing pin arranged at the lower position of the corrugated board corresponding to the rising portion is lifted upward to press the standing portion. In the case of using such an upright pressing pin, the pressing position changing means can be configured by a pin support plate having a plurality of mounting holes for holding the upright pressing pin. In the case of this configuration, when mounting the upright pressing pin on the pin support plate,
By changing the mounting holes to be mounted variously, it is possible to arbitrarily change the pressing position of the standing press pin against the corrugated board in accordance with the shape of the corrugated board.

[0018]

In the crease imparting device for the corrugated board for cushioning material according to the first aspect, first, the crease creases of the mountain folds are attached to the erected portions of the corrugated board by the erection portion mountain fold means.
Next, the rolled-up portion of the cardboard is lifted by a small angle, for example, about 10 ° by the preliminary lifting means. At this time, the rising part has a mountain fold crease beforehand, so when the rolled up part is lifted a little, the standing part automatically lifts up in the standing direction, and even if it is wrong, the standing direction is reversed. It does not bend in the direction. After that, the roll-up means lifts the roll-up portion of the cardboard to a sufficiently large angle, and the folding process ends.

In the folding habit imparting device for the cardboard for cushioning material according to the ninth aspect, the position where the upright portion is bent and the position where the rolled up portion is bent can be freely changed by the action of the pressing position changing means. When the shape of the corrugated board that is the target of folding changes in various ways, the bending positions of the standing portion and the rolled-up portion are changed in this way.

[0020]

EXAMPLE FIG. 7 shows an example of cardboard. This corrugated cardboard 1 is composed of a central standing portion 2, both side standing portions 3a, 3
b, and each part of the roll-up parts 4a and 4b located on both sides of those standing parts. The chain line in the drawing indicates the fold line, and each part of the corrugated board 1 is folded along these fold lines to form the cushioning material 5 as shown in FIG. The electric product or the like is housed in a cardboard box with the cushioning material 5 applied to the corner of the electric product or the like. Of course, if the shape of the product to be buffered changes, the shape of the buffer material 5 also changes, and thus the shape of the corrugated board 1 also changes. However, even when the shape of the corrugated board changes in various ways, the corrugated board basically has an upright portion and a rolled-up portion.

FIG. 8 shows a state in which the corrugated board 1 of FIG. 7 is inverted by 180 ° around the center line L1 as indicated by an arrow A, that is, the back surface of the corrugated board 1. In this figure,
Folding line LA on the back side that divides the standing portions 2, 3a, 3b
Is formed by a half-cut line. The half-cut line is a fold line formed by cutting the corrugated board 1 to about half in the thickness direction with a cutter.

FIG. 1 shows an entire embodiment of a folding habit imparting device according to the present invention. This crease imparting device includes an untreated corrugated board stack stage 6 on which a large number of untreated corrugated board 1 are stacked, a first folding stage 7, a second folding stage 8, and a processed corrugated board with a crease. 1 ', and the discharge stage 9 is stacked. A corrugated board transportation device 10 is arranged on each stage. The transfer device 10 includes a stationary linear rail 11 and a moving plate 13 that is hung on the rail 11 by a plurality of sets of rollers 12 and moves back and forth linearly along the rail 11.

Three sets of transport needles 21 are fixed to the movable plate 13 at intervals equal to the intervals between the stages 6, 7, 8 and 9. The moving plate 13 is connected to an endless timing belt 14 that is driven by a motor or the like to rotate and rotates, and the reciprocating circumferential rotation of the endless timing belt 14 causes the moving plate 13 to linearly reciprocate in the left-right direction in the drawing. . Each carrier needle 21 is fixed to the plunger of the air cylinder 15, and moves in the vertical direction in the figure according to the ON / OFF operation of the air cylinder 15. When the transport needles 21 move downward, the transport needles 21 pierce the cardboard 1 existing under the moving plate 13. When the movable plate 13 is driven by the timing belt 14 in the stuck state and moves in the direction of arrow B, the single corrugated cardboard 1 on which the transport needle 21 is stuck is transported in the direction of arrow B. When the cardboard 1 is transported to a predetermined stage, the transport needle 21
Are lifted up by the air cylinder 15 and pulled out from the cardboard 1. The moving plate 13 repeats reciprocal movement in the left-right direction, and at the same time, the transport needle 21 repeats vertical movement in synchronization therewith, whereby the corrugated board 1 is intermittently transferred between the stages 6, 7, 8 and 9 one by one. Be transported.
The corrugated board 1 is stacked on the stack stage 6 of FIG. 1 in a state of being conveyed in the direction of arrow B in FIG. 7.

When the first folding stage 7 is viewed along the line II-II, it has the structure shown in FIG. In this embodiment, the first processing stage 7 includes two transfer rails 16
And a holding pin 18 driven by an air cylinder 17 to move up and down, and a side plate 20 driven by an air cylinder 19 to move up and down. The corrugated cardboard 1 transported by the transport needle 21 has side guides 22a,
It slides on the transport rail 16 while being guided by 22b. At this time, the transfer rail 16 is shown in FIG.
As shown in FIG.
A portion slightly inside the fold line L2 that divides is placed.

As shown in FIG. 7, the presser pin 18 is 1
Four pieces are provided for one cardboard 1. In addition, a supporting bracket 26 that sandwiches the cardboard 1 under pressure in cooperation with the pressing pins 18 is provided at a lower position facing the pressing pins 18. The pressing position of the cardboard 1 by the pressing pin 18 is slightly inside the folding line L2 for roll-up part partitioning, as indicated by the symbol C in FIG. Figure 3
In the side plate 20, at the lower end thereof, a lower pressing piece 23 protruding outward in the direction perpendicular to the lower plate, a pressing roller 24 also rotatably provided at the lower end, and a lower pressing piece 23.
Each member such as an upper pressing piece 25 provided at a position slightly above is provided. As shown in FIG. 7, a plurality of pressing rollers 24 are provided along the conveyance direction B of the corrugated board 1, for example, three pressing rollers are provided on each side.

Returning to FIG. 2, the receiving plate 27 is fixed to the outer side surface of the transport rail 16. In addition, holding plates 29a and 29b, which are driven obliquely by the air cylinders 28a and 28b and linearly move back and forth, at positions obliquely below the transport rail 16.
Is provided. A guide rod 31 fixed to the upper surface of the upper frame 30 is provided with two sliders 32a and 32b slidably movable. The pressing pin 18 and the side plate 20 are provided.
The individual units including the air cylinders 17 and 19 for driving them are supported by the respective sliders 32a and 32b. Each slider 32a, 32b is
It is fitted to the screw part of the screw shaft 33 in the different direction on the peripheral surface,
By turning the handle 34, both sliders 32a, 3
The spacing between 2b can be adjusted. Further, the pair of left and right conveying rails 16 are also fitted to the screw portions of the screw shaft 35 in different directions on the circumferential surface, and the handle 36 is turned to adjust the distance between the conveying rails 16. These are for adapting the positions of the pressing pin 18, the transport rail 16 and the like to the corrugated board 1 having different sizes.

In FIG. 1, the second folding stage 8 is set to IV
The structure shown in FIG. 4 is obtained when viewed along line IV. In the present embodiment, the second folding stage 8 has two transport rails 46 and a pre-lifting pressing pin 48 that is driven by an air cylinder 47 to move up and down. The corrugated board 1 carried by the carrying needle 21 slides on the carrying rail 46. At this time, as shown in FIG. 11 and FIG.
A portion slightly outside the folding line L2 that divides the rolled-up portions 4a and 4b of the corrugated board 1 is placed.

As shown in FIG. 11, four pre-lifting pressing pins 48 are provided for one corrugated board 1. Further, at the lower position facing each pressing pin 48,
A receiving plate 40 for receiving the pressing pins 48 is fixedly provided on the inner surface of the upper portion of the transport rail 46. The pressing position of the corrugated cardboard 1 by the pressing pin 48 is slightly inside the roll-up portion partitioning fold line L2, as indicated by the symbol D in FIG. 11 and also in FIG. Further, the receiving plate 40 is
As shown in FIG. 6, the corrugated board placement surface 4 of the transport rail 46
It is arranged at a position lower than 6a.

In FIG. 4, lifting members 42a and 42b, which are driven by air cylinders 41a and 41b and linearly reciprocate diagonally in the vertical direction, are provided on both sides of the transport rail 46. These lifting members 42
As shown in FIG. 11, a and 42b have a plurality of a and 42b at their tips.
For example, it includes three rotatable rollers 43. Figure 4
Returning to, inside the pair of transport rails 46, a flat pin support plate 45 that is driven by the air cylinder 44 and moves up and down is provided. And this pin support plate 45
The upright pressing pin 50 is provided on the upper part. As shown in FIG. 11, four upright pressing pins 50 are provided corresponding to lower positions corresponding to four points P in the central upright portion 2 of the corrugated board 1.

As shown in FIG. 14, the pin support plate 45 is provided with a large number of mounting holes H, and the upright pressing pins 50 are mounted in any of them. By selecting the mounting holes to be mounted appropriately,
The arrangement position of the pressing pin 50 can be freely selected according to the shape of the standing portion 2. As described above, apart from the method in which a large number of mounting holes are provided in the pin support plate and the mounting positions of the pressing pins are changed appropriately according to the shape of the corrugated cardboard, pressing is performed in accordance with the required corrugated cardboard shape. It is also conceivable to prepare a plurality of types of pin support plates having different positions of the pins 50 and replace the entire pin support plate with another one in accordance with the shape of the cardboard.

In FIG. 4, two sliders 52a, 5 are attached to a guide rod 51 fixed to the upper surface of the upper frame 30.
2b is provided so as to be slidably movable, and individual units including a pre-lifting pressing pin 48 and an air cylinder 47 for driving the pressing pin 48 are provided in respective sliders 52a, 52.
supported by b. Each slider 52a, 52b
Are fitted to screw portions of the screw shaft 53 on the circumferential surface in different directions, and the handle 54 is turned to rotate the sliders 52.
The distance between a and 52b can be adjusted. Further, the pair of left and right conveying rails 46 are also fitted to the screw portions of the screw shaft 55 in different directions on the peripheral surface, and the handle 56 can be rotated to adjust the distance between the conveying rails 46. These are also for adapting the positions of the pressing pin 48, the transport rail 46, etc. to the corrugated board 1 having different sizes.

The operation of the folding habit imparting device having the above structure will be described below.

In FIG. 1, the stack stage 6 is shown in FIG.
A plurality of unprocessed cardboards 1 as shown in FIG. The air cylinder 15 of the corrugated board transporting device 10 is actuated and the two transport needles 21 are lowered to move the topmost 1 of the corrugated board 1.
Stick into a sheet. Then, the moving plate 13 is driven by the timing belt 14 to move to the left in the figure, and one corrugated board 1 is carried to the first folding stage 7. When the corrugated board 1 reaches a predetermined position on the first stage 7 shown in FIG.
The transport needle 21 moves upward and is pulled out from the cardboard 1. After that, the air cylinder 17 operates and the presser pin 1
8 is lowered, and the four portions indicated by reference symbol C in FIG. 7 are supported by being pressed by the pressing pin 18 and the supporting bracket 26 from above and under pressure.

Thereafter, referring to FIG. 3, the air cylinder 19
Is activated and the side plate 20 is lowered. At this time, the lower pressing piece 23 provided on the side plate 20 moves downward until it hits the receiving plate 27, whereby the rolled-up portions 4a and 4b of the corrugated board 1 are moved to the lower pressing piece 23 and the roller 24 as shown in FIG. The sheet is pressed by and is folded downward at the folding line L2. As a result, the central standing portion 2 and the side standing portions 3
A crease portion of mountain fold is formed inside the a and 3b along the fold line L2.

Then, in FIG. 3, the pressing plates 29a and 29b are driven by the air cylinders 28a and 28b to extend and move upward, and the corrugated board 1 is folded by the pressing plates 29a and 28b as shown in FIG. It will be folded at L4. When the above work is completed, in FIG. 3, the holding pin 18, the side plate 20, and the holding plates 29a, 29
b returns to the initial position where it is separated from the cardboard 1. Then, although the corrugated board 1 has a crease at the folding lines L2 to L5, the corrugated board 1 is automatically expanded to a state close to the expanded state shown in FIG. 7 by the action of the elastic restoring force unique to the corrugated board 1. .

When the processing in the first folding stage 7 is completed as described above, in FIG. 1, the transport needle 21 descends again and pierces the corrugated cardboard 1 and further in the transport direction B.
To move the cardboard 1 to the second folding stage 8. When the corrugated board 1 reaches a predetermined position of the second folding stage 8 shown in FIG. 4, the transport needle 21 is pulled out from the corrugated board 1. After that, the pressing pin 48 is driven by the air cylinder 47 and descends until it hits the receiving plate 40.

As shown in FIG. 6, since the receiving plate 40 is fixed to a position lower than the corrugated board receiving surface 46a of the transport rail 46, when the pressing pin 48 hits the receiving plate 40,
The roll-up portions 4a and 4b of the corrugated board 1 are lifted upward and inclined to a relatively small angle δ, for example, δ = about 10 °. In FIG. 11, since the folding line L2 passing through the inside of the upright portions 2, 3a, 3b has already been given a crease of mountain fold, as described above, the rolled-up portion 4
When a and 4b are lifted by the angle δ, the standing portion 2,
3a and 3b automatically lift up slightly, that is, slightly upward in the figure. This lifting is caused when the folding line that divides the upright portions 2, 3a, 3b is formed as a half-cut line LA on the back surface side as in this embodiment.
Brought to prominence.

Thereafter, referring to FIG. 5, the air cylinder 44
Is activated to raise the upright pressing pin 50, and the four pins P (FIG. 11) of the central upright portion 2 are pushed upward by these pressing pins. Almost in synchronism with this operation, the lifting members 42a and 42b move the air cylinder 41.
It is driven by a and 41b to move upward, and the rolled-up portions 4a and 4b of the corrugated board 1 are largely lifted upward as indicated by arrow E. Thus, as shown in FIG. 12, the roll-up portions 4a and 4b are largely lifted upward. At this time, the central upright portion 2 and both upright portions 3a, 3b upright upright. From this state,
If the rolled-up portions 4a and 4b are further folded in the direction of the arrow F and further engaged with the standing portions 2, 3a and 3b, the cushioning material 5 made of corrugated cardboard as shown in FIG.
Is formed. However, the present folding habit imparting device does not perform the folding as indicated by the arrow F because the purpose is not to make the cushioning material 5 but to simply give the folding habit.

Thereafter, referring to FIG. 5, the pre-lifting pressing pin 48, the upright pressing pin 50 and the lifting member 42.
The a and 42b return to the initial position where they are separated from the cardboard 1.
Then, the corrugated board 1 is unfolded and moved from the standing state shown in FIG. 12 to the unfolded state shown in FIG. 11 by the action of gravity and the elastic restoring force of the corrugated board 1, and thus the second folding stage 8
The process in is ended. After that, the transport needle 21 descends again and pierces the corrugated board 1, and the moving plate 13 further moves in the direction of arrow B in FIG. 1, whereby the corrugated corrugated board 1 ′ is transported to the discharge stage 9. And it gets stuck there.

The corrugated cardboard 1'after processing is transported to an appropriate place to be assembled as a cushioning material, for example, to the production line of the product to be packed, where it is brought into the state shown in FIG. Can be assembled. At the time of this assembly work, the corrugated cardboard has already been given a crease, so that the worker does not need to exert much force,
The cushioning material can be assembled very easily.

As described above, according to the present embodiment, as shown in FIG. 9, the mountain-folding creases L2 are formed inside the upright portions 2, 3a, 3b, and thereafter, as shown in FIG. The raising portions 4a and 4b are preliminarily slowly lifted by a small inclination angle δ. Due to the synergistic effect of the folding process of the mountain fold and the subsequent preliminary lifting process, the upright portions 2, 3a, 3b are surely lifted in the normal upright direction, that is, the upward direction of FIG. You can be addicted. Therefore, after that, in FIG.
When the roll-up portions 4a and 4b are largely lifted upward as indicated by arrow E, the standing portions 2, 3a and 3b can be surely raised in the normal standing direction as shown in FIG. Temporarily, without performing the folding habit processing of the mountain fold and the subsequent preliminary lifting processing,
Suddenly, if the roll-up portions 4a and 4b are forcibly lifted by a large amount, the standing portions 2, 3a and 3b are bent in a direction completely unrelated to the normal standing direction due to the inherent resistance of the corrugated board. However, according to the present embodiment, there is no such concern.

The present invention has been described above with reference to the preferred embodiments, but the present invention is not limited to the embodiments and can be variously modified within the technical scope described in the claims.

For example, the corrugated board is not limited to the shape shown in FIG. 7 as long as it has an upright portion and a rolled-up portion, and an arbitrary shape corresponding to the desired shape of the cushioning material. Can be Further, in the case of the corrugated board of FIG. 7, the back side of the folding line L2 that divides the upright portions 2, 3a, 3b is set to the half-cut line LA, but the present invention also relates to the corrugated board not using such half-cut line LA. The crease imparting device can be effectively used.

Further, in the above embodiment, as shown in FIG. 1, a step of forming a mountain-folding crease in the upright portion, and a step of preliminarily lifting the roll-up portion at a small angle,
Then, the three steps such as the step of largely rolling up the rolled-up portion were divided into two processing stages, that is, the first folding stage 6 and the second folding stage 7, but these steps should be performed collectively in one processing stage. You can also do it. However, in that case, various devices must be installed together in one processing stage, which may require a mechanical improvement.

[0045]

According to the crease imparting device of the first aspect of the present invention, the process of forming a mountain fold crease in the standing portion of the corrugated board is performed, and subsequently, the rolled-up portion of the corrugated board is preliminarily set to a small angle δ. Due to the synergistic effect with the lifting process, the standing direction of the standing portion of the corrugated board can be definitely determined as the normal standing direction. This is particularly effective when the corrugated board becomes thick and difficult to bend.

According to the crease imparting device of claim 2,
The standing portion of the corrugated board can be more reliably raised in the normal standing direction.

According to the folding habit imparting device of claim 3,
With an extremely simple structure, a preliminary lifting process for the rolled-up portion can be realized.

According to the crease imparting device of claim 4,
It is possible to more reliably lift the standing portion of the cardboard in the proper standing direction.

According to the crease imparting device of claim 5,
With a device having a simple structure, the rolled-up portion of the cardboard can be rolled up at a large angle with certainty.

According to the crease imparting device of claim 6,
The roll-up operation of the roll-up portion of the corrugated board can be smoothly performed, and the corrugated board can be reliably prevented from being damaged.

According to the folding habit imparting device of claim 7,
The device for transporting the corrugated board can be constructed very simply and inexpensively.

According to the folding habit imparting device of claim 8,
Even when the device for conveying the corrugated board is extremely simple and inexpensive, it is possible to prevent the positional deviation during the conveyance of the corrugated board.

According to the crease imparting device of the ninth to eleventh aspects, when the shape of the corrugated cardboard to be bent changes, each part of the corrugated cardboard can be bent only by performing an extremely simple operation. The device can be repositioned to the proper position.

[0054]

[Brief description of drawings]

FIG. 1 is a front view showing an entire embodiment of a folding habit imparting device according to the present invention.

FIG. 2 is a side sectional view showing a first folding stage according to a line II-II in FIG.

FIG. 3 is an enlarged view showing a main part of FIG.

FIG. 4 is a side sectional view showing a second folding stage according to the line IV-IV in FIG.

5 is an enlarged view showing a main part of FIG.

FIG. 6 is an enlarged view showing a main part of FIG.

FIG. 7 is a perspective view showing an example of a corrugated board as a corrugated board.

FIG. 8 is a perspective view showing a back side surface of the corrugated board by turning it over.

FIG. 9 is a perspective view showing a process of forming a mountain fold crease on the standing portion of the corrugated board.

FIG. 10 is a perspective view showing a step of forming a rolled-up portion of corrugated board.

FIG. 11 is a perspective view showing a step of preliminarily lifting the rolled-up portion of the cardboard at a small angle.

FIG. 12 is a perspective view showing the final step of the corrugated board folding process.

13 is a perspective view showing a cushioning material formed by folding the cardboard of FIG.

14 is a perspective view showing a main part of FIG. 5, in particular a standing pressing pin and a supporting mechanism thereof.

[Explanation of symbols]

1 untreated cardboard 1'treated cardboard 2 Central upright 3a, 3b both sides upright 4a, 4b Rolling up part 5 cushioning material 6 Cardboard stack stage 7 First folding stage 8 Second folding stage 9 Discharge stage 10 Corrugated board carrier 11 straight rail 12 roller 13 Moving plate 14 Endless timing belt 15 Air cylinder 16 Conveyor rail (cardboard mounting table) 18 Presser pin 20 side plate 21 Conveyor needle 22a, 22b Side guide 23 Lower presser piece 24 Presser roller 25 Upper presser piece 26 Support bracket 27 support plate 29a, 29b Presser plate 40 support plate 42a, 42b Lifting member 43 Roller 45 pin support plate 46 Conveyor rail (cardboard mounting table) 48 Pre-lifting push pin 50 Standing push pin LA half-cut line H pin mounting hole

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B31F 1/08 B65D 81/04

Claims (11)

(57) [Claims] 1. A crease forming device for forming a crease on a corrugated board formed by folding into a cushioning material, the crease having a crease defined by fold lines and a roll-up portion. Upright part mountain folding means for forming a mountain fold crease in the upright part by bending the upright part in the direction opposite to the upright direction, and pre-lifting means for preliminarily lifting the upright part in the upright direction by a small angle. A folding habit imparting device for a cardboard for cushioning material, comprising: a raising means for raising a raising portion at a large angle. 2. A crease imparting device for a corrugated board for cushioning material according to claim 1, wherein the standing boundary fold line of the erected portion is constituted by a half cut line. apparatus. 3. The folding habit imparting device for a cardboard for cushioning material according to claim 1 or 2, wherein the preliminary lifting means supports the cardboard outside the roll-up boundary fold line of the roll-up portion. The present invention is characterized by having a placing table and a pre-lifting pressing pin for pushing the cardboard placed on the cardboard placing table to a position below the cardboard placing surface of the cardboard placing table inside the roll-up boundary fold line. Folding device for cardboard for cushioning material. 4. The folding habit imparting device for a cardboard for cushioning material according to claim 1, further comprising an upright pressing pin that pushes up the upright portion in the upright direction. A device for imparting a crease for a cardboard for cushioning material, characterized by: 5. The folding device for a cushioning material corrugated board according to any one of claims 1 to 4, wherein the roll-up means comprises an upstream side and a downstream side in the roll-up direction. A crease imparting device for a cardboard for cushioning material, comprising a lifting member that moves straight in a diagonal direction to a position. 6. The crease imparting device for a cardboard for cushioning material according to claim 5, wherein a roller is provided at a tip of the lifting member. 7. The folding habit imparting device for a cardboard for cushioning material according to claim 1, wherein the rising portion mountain folding means, the preliminary lifting means and the roll-up means are at least It has a corrugated board transfer device that is divided into two processing stages and that transfers corrugated board between the processing stages. The corrugated board transfer device is mounted on the transfer rail that extends in the transfer direction of the corrugated board. Fold imparting device for a cardboard for cushioning material, comprising: a transport needle that moves between a position for piercing the corrugated cardboard and a position away from the corrugated cardboard; and a needle moving unit that moves the transport needle in the corrugated fiberboard transport direction. . 8. The folding device for a cushioning cardboard according to claim 7, wherein the transport needles are provided at at least two different positions in the corrugated-cardboard transport direction. Addition device. 9. A crease-creasing device for forming a crease on a corrugated board that is formed by folding into a cushioning material and has a standing portion and a roll-up portion that are defined by fold lines. Upright part processing means for pressing and bending the part, roll-up part processing means for pressing the roll-up part and bending the part, and pressing position of the corrugated cardboard by the stand-up part processing means and roll-up part processing means A folding habit imparting device for a cardboard for cushioning material, comprising a pressing position changing means for changing a pressing position of the cardboard. 10. A folding habit imparting device for a cardboard for cushioning material according to claim 9, wherein the pressing position changing means includes a screw shaft supporting the upright portion processing means and a screw shaft supporting the roll-up portion processing means. A crease imparting device for a corrugated board for cushioning material, characterized in that a pressing position with respect to the corrugated board is changed by rotating these screw shafts. 11. The folding habit imparting device for a corrugated cardboard cushioning material according to claim 9 or 10, wherein the standing portion processing means pushes up the standing portion in the standing direction, and the standing pressing pin. By having a pin support plate provided with a plurality of mounting holes for holding, by changing the mounting hole for mounting the upright pressing pin,
A folding habit imparting device for a cardboard for cushioning material, characterized in that the position of the upright pressing pin with respect to the cardboard is changed.