JP2002137311A - Cardboard sheet transfer device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To assemble a cardboard sheet into a cardboard box by damaging a glue margin formed at one end of a cardboard sheet to enhance the penetration of an adhesive into the glue margin. Provided is a cardboard sheet transfer device capable of performing a process smoothly and reliably. SOLUTION: The cardboard sheet transfer device A of the present invention.
Is a cardboard sheet transfer device A for holding the cardboard sheet E between the upper and lower conveyor belts 1 and 3 and transferring the cardboard sheet E toward the front.
At least one of the cardboard sheet holding surfaces 11a, 31a of the upper and lower conveyor belts 1a, 3a for holding one end of the cardboard sheet E on which E3 is formed is provided with a projection for damaging the surface of the cardboard sheet E. Therefore, since the adhesive margin portion surface is in a state in which countless tears are formed by being damaged by the convex portion of the conveyor belt, the adhesive applied to the adhesive margin portion of the cardboard sheet is A part thereof smoothly and surely penetrates into the laceration, and is reliably layered on the surface of the glue margin by the anchor effect.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of transferring a corrugated cardboard sheet into a cardboard box in which a glue margin formed at one end of the corrugated cardboard sheet is damaged in a slotter process so that the assembling process of the corrugated cardboard sheet into a cardboard box can be carried out smoothly. Related to the device.

[0002]

2. Description of the Related Art Conventionally, there have been provided many cardboard sheet processing machines for producing cardboard sheets constituting a cardboard box. As such a cardboard sheet processing machine, a supply device for supplying a cardboard sheet, a plurality of printing devices provided at predetermined intervals in front of the supply device, and a printing device provided in front of the printing device. And a processing device comprising a ruled line roller and a slotter roller, and a plurality of cardboard sheet transfer devices disposed between these devices.

In the above-mentioned printing apparatus, after a predetermined printing is performed on the surface of the corrugated cardboard sheet, a glue margin is formed at one end of the corrugated cardboard sheet and a ruled line is formed at a predetermined position in the left-right direction. And slots are formed.

[0004] As shown in Fig. 8, the cardboard sheet processed as described above is bent from the ruled line after an adhesive is applied to its adhesive margin, and is bent at the other end of the cardboard sheet. And the glue margin are bonded and integrated to form a flat cylindrical shape.

On the other hand, in recent years, the surface of a cardboard sheet constituting a cardboard box is often subjected to a water-repellent treatment in order to put fresh food such as marine products and fruits and vegetables.
If the surface of the cardboard sheet is water-repellent in this manner, even if the adhesive is applied to the adhesive margin, the adhesive does not penetrate well into the adhesive margin, and the other end of the cardboard sheet Insufficient adhesion and integration between the adhesive and the margin allowance, and in the subsequent assembly process of the cardboard sheet into the cardboard box, the other end of the cardboard sheet and the adhesive margin are unexpectedly separated, which hinders the assembly process. There was a problem of coming.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a glue margin formed at one end of a corrugated cardboard sheet is scratched in a slotter process to enhance the penetration of the adhesive into the glue margin. The present invention relates to a cardboard sheet transfer device capable of securely bonding and integrating an end portion and a glue margin portion and performing a subsequent and assembling step of a cardboard sheet into a cardboard box smoothly and reliably.

[0007]

According to a first aspect of the present invention, there is provided a cardboard sheet transfer device for holding a cardboard sheet between a pair of upper and lower conveyor belts and transferring the cardboard sheet forward. A protrusion for damaging the surface of the cardboard sheet is provided on at least one of the cardboard sheet holding surfaces of the upper and lower conveyor belts for holding one end of the cardboard sheet on which the glue margin is formed by the slotter process. It is characterized by.

According to a second aspect of the present invention, there is provided a cardboard sheet transfer apparatus according to the first aspect, wherein the pair of upper and lower conveyor belts sandwich one end of the cardboard sheet. The projections for damaging the surface of the corrugated cardboard sheet are provided so as to protrude from the upper clamping surface and the lower clamping surface between the vertically opposed clamping surfaces for clamping the other end of the cardboard sheet.

Further, the cardboard sheet transfer device according to claim 3 is the cardboard sheet transfer device according to claim 1, wherein the pair of upper and lower conveyor belts includes:
Protrusions for damaging the surface of the cardboard sheet protrude from the lower holding surface of the upper and lower opposing holding surfaces that hold one end of the cardboard sheet and the upper holding surface of the upper and lower opposing holding surfaces that hold the other end of the cardboard sheet. It is characterized by being provided.

According to a fourth aspect of the present invention, there is provided a cardboard sheet transfer apparatus according to any one of the first to third aspects, wherein the surface of the cardboard sheet is water-repellent. The cardboard sheet is characterized in that the surface of the cardboard sheet is damaged by the projections to expose the cloth of the cardboard sheet.

[0011]

The glue margin is formed at one end of the cardboard sheet by a slotter process. According to the cardboard sheet transfer device of the present invention, the upper and lower cardboards of the upper and lower conveyor belts sandwiching the one end of the cardboard sheet. Since at least one of the sheet sandwiching surfaces is provided with a projection for damaging the surface of the cardboard sheet, the surface of one end of the cardboard sheet is pressed from above and below by the upper and lower conveyor belts by the upper and lower cardboard sheet sandwiching surfaces, When it is pinched, it is damaged by the protrusions provided on the cardboard sheet pinching surface.

In the process of assembling the cardboard sheet into the cardboard box, when an adhesive is applied to the margin of the cardboard sheet, the adhesive is smoothly and surely inserted into the margin by the scratch on the surface of the margin. In particular, even when the surface of the cardboard sheet is water-repellent, the water-repellent layer is torn by the projections, exposing the cloth of the cardboard sheet portion forming the glue margin. Then, a part of the adhesive penetrates into the exposed cloth and is surely layered on the surface of the glue margin.

Therefore, in the process of assembling the cardboard sheet into the cardboard box, the margin for the cardboard sheet is
The other end of the cardboard sheet is firmly bonded and integrated with the adhesive by the adhesive which has well penetrated into the glue margin, and the cardboard sheet is assembled smoothly and reliably in the cardboard box.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of a cardboard sheet transfer device according to the present invention will be described with reference to the drawings. The cardboard sheet transfer device is disposed between respective devices described later in the cardboard sheet processing machine as shown in FIG.

That is, in the corrugated cardboard processing machine shown in FIG. 1, B is a supply device for supplying a corrugated cardboard sheet E provided with a kicker B1 reciprocating in the front-rear direction toward the front. In front of the supply device B, a plurality of printing devices C are arranged at predetermined intervals in the front-rear direction. Further, the plurality of printing apparatuses C, C,.
A processing device D including a ruled line roller D1 and a slotter roller D2 is disposed at a predetermined interval in front of the foremost printing device C.

The supply device B and the printing device C
, Between the printing apparatuses C, C and between the printing apparatus C on the forefront side and the processing apparatus D in the plurality of printing apparatuses C, C,.
・ ・ Is provided.

The cardboard sheet transfer device A will be described in detail. The cardboard sheet transfer device A is, as shown in FIG. 2 and FIG. An endless upper conveyor belt 1 having an endless fixed width which is stretched between the gear wheels 21 and 22;
, Lower gear wheels 41, 42 disposed in opposition to each other.
A pair of an endless lower conveyor belt 3 having an endless constant width, which is disposed between the upper conveyor belt 1 and is opposed to the upper conveyor belt 1 with an interval smaller than the thickness of the cardboard sheet E; A pair of upper and lower conveyor belts 1,
3 is separated in the left-right direction by a distance slightly smaller than the left-right width of the cardboard sheet, that is, one of the upper and lower conveyor belts 1a and 3a is placed at one end of the cardboard sheet E, and the other upper and lower conveyor belts 1b and 3b are placed in the cardboard box. It is arranged in a state corresponding to the other end of the sheet E.

The upper and lower conveyor belts 1, 3
As shown in FIG. 4, the cardboard sheet E is sandwiched between the opposed upper and lower cardboard sheet sandwiching surfaces 11 and 31, and the upper and lower gear wheels 21 and 41 are driven and rotated to rotate the cardboard sheet sandwiching surface. The cardboard sheet E between the cardboard sheet sandwiching surfaces 11 and 31 is transferred forward at the same speed.

Further, as shown in FIGS. 5 to 7, the upper cardboard sheet holding surface 11a of the upper and lower conveyor belts 1a and 3a holding the one end E1 of the cardboard sheet E.
Are provided with innumerable hard convex portions 111a, while the lower cardboard sheet holding surfaces 31b of the upper and lower conveyor belts 1b and 3b that hold the other end portion E2 of the cardboard sheet E are similarly provided with countless hard convex portions. A part 311b is provided to protrude. The convex portions 111a and 311b are used to hold countless hard particles having sharp corners such as sand and glass pieces, and hold the belts 1a and 3b between the holding surfaces 11a and 3b.
It is formed by attaching and fixing to 31b.

The upper and lower conveyor belts 1a, 3a,
When the corrugated cardboard sheet E is supplied between 1b and 3b, the corrugated cardboard sheet E is attached to the upper and lower conveyor belts at both ends to be adhered to each other in a subsequent assembling process.
Pressed from above and below by 1a, 3a, 1b, 3b, pinched,
Due to this pinching force, one end of the cardboard sheet E
The convex portions 111a and 311b are sunk into the upper surface of the E1 and the lower surface of the other end E2 to damage the upper surface of the one end E1 and the lower surface of the other end E2 of the cardboard sheet E, and a part of the adhesive penetrates into the tear. It is configured to exhibit the anchor effect.

The upper cardboard sheet holding surface 11
The shape of the convex portion 111a protruding from the a and the convex portion 311b protruding from the lower cardboard sheet sandwiching surface 31b is determined by the upper surface of one end E1 of the cardboard sheet E and the other end E2 of the cardboard sheet E. There is no particular limitation as long as the lower surface can be scratched to form an infinite number of tears.

Next, the cardboard sheet transfer device A
How to use is explained. First, a cardboard sheet E is supplied between the upper and lower conveyor belts 1 and 3 of the cardboard sheet transfer device A disposed immediately before the supply device B from the supply device B of the cardboard sheet processing machine.

Then, the cardboard E has one end portion thereof.
Upper and lower conveyor belt 1 where E1 is moving forward
a, pressed between the cardboard sheet holding surfaces 11a, 31a of 3a,
While being nipped, the other end portion E2 is pressed and nipped between the cardboard sheet nipping surfaces 11b and 31b of the upper and lower conveyor belts 1b and 3b which are being transported forward, and is transported forward.

At this time, as shown in FIGS. 5 and 6, the upper surface of the one end portion E1 of the cardboard sheet E is pressed by the upper and lower conveyor belts 1a and 3a from above and below by the cardboard sheet of the upper conveyor belt 1a. The projection 111a protruding from the holding surface 11a is damaged by being entangled,
The lower surface of one end portion E2 of the cardboard sheet E is also pressed by the upper and lower conveyor belts 1b and 3b from above and below by the pressing force from above and below, and the cardboard sheet holding surface 31b of the lower conveyor belt 3b is pressed.
The projection 311b protruding from the inner side is damaged due to the indentation.

Thereafter, the cardboard sheet E is moved to the position shown in FIG.
As shown in the above, in the processing apparatus D, a margin portion E3 is formed at one end thereof, and a ruled line and a slotter are formed at a predetermined position, and the margin margin E3 of the corrugated cardboard sheet E which has been subjected to the scratching process is formed. After applying an adhesive to the upper surface, the upper surface is bent from the ruled line, and the lower surface of the other end portion E2 of the cardboard sheet E and the upper surface of the glue margin E3 are bonded and integrated.

At this time, the glue margin of the cardboard sheet E is used.
Since the upper surface of E3 is scratched as described above,
Even if the surface of the cardboard sheet E is water-repellent, the water-repellent layer is torn at the time of the scratching process by the projections, and the material of the cardboard sheet E is exposed from the tear portion. The adhesive applied to the exposed adhesive margin E3 of the corrugated cardboard sheet E partially and smoothly penetrates into the cloth of the cardboard sheet E constituting the adhesive margin E3 of the corrugated cardboard sheet E. It is surely layered on the upper surface of the glue margin E3.

Therefore, the other end of the cardboard sheet E
Adhesive integration between the lower surface of E2 and the upper surface of the glue margin E3 is reliably performed by the adhesive applied to the glue margin E3, and both are unexpectedly separated during the subsequent assembly process of the cardboard sheet E into the cardboard box. The process of assembling the cardboard sheet E into the cardboard box can be performed smoothly and reliably.

The both ends of the cardboard sheet E are:
As described above, between the conveyor belts 1a, 3a, 1b, and 3b, the convex portions 111a and 311a projecting from the cardboard sheet sandwiching surfaces 11a and 31b of the conveyor belts 1a and 3b are in a state of being recessed. The cardboard sheet E is smoothly and reliably transported forward without slipping on the conveyor belts 1a, 3a, 1b, 3b and causing a transfer deviation.

Accordingly, as shown in FIG. 1, a plurality of the printing apparatuses C are provided, and the cardboard sheets E are sequentially supplied to the respective printing apparatuses C, and multicolor printing is performed on the surface of the cardboard sheets E. Even in such a case, the cardboard sheet E is supplied to the printing device C with high precision without causing a transfer deviation, and therefore, if the cardboard sheet E is transferred by the cardboard sheet transfer device A,
High-quality multicolor printing can be accurately performed on the surface of the cardboard sheet.

Further, since the cardboard sheet sandwiching surface of the conventional upper and lower conveyor belts is formed as a flat surface with no irregularities, the cardboard sheet E is reliably transferred forward without causing slippage with respect to the upper and lower conveyor belts. For this purpose, the upper and lower conveyor belts are pressed against the cardboard sheet surface with extremely large force to firmly hold the cardboard sheets between the upper and lower conveyor belts, and a very large addition to the gear wheel motor that drives the upper and lower conveyor belts. Was joining.

On the other hand, the cardboard sheet transfer device A
As described above, the convex portion 111a of the upper conveyor belt 1a is embedded in the surface of the one end portion E1 of the cardboard sheet E, and the convex portion 111a of the lower conveyor belt 3b is fitted in the surface of the other end portion E2 of the cardboard sheet E. Since the 311b is recessed, the upper and lower conveyor belts 1a, 3a, 1b, 3b are also held against the cardboard sheet E when the both ends of the cardboard sheet E are sandwiched between the upper and lower conveyor belts 1a, 3a, 1b, 3b. It is not necessary to press with such a large force, so that the load on the motor driving the upper and lower gear wheels 21 and 41 is reduced, and a low-torque motor can be used.

In the above embodiment, in all the plurality of cardboard sheet transfer devices A provided in the cardboard sheet processing machine, the upper conveyor belt 1a of the upper and lower conveyor belts 1a, 3a and the upper and lower conveyor belts 1b, 3b Projecting parts 111a, 311b are provided on each of the lower conveyor belts 3b,
A case has been described in which the upper surface of the one end portion E1 and the lower surface of the other end portion E2 of the cardboard sheet E are scratched by the respective cardboard sheet transfer devices A. Convex portions 111a, 311b only on upper and lower conveyor belts 1, 3 of a single cardboard sheet transfer device A
May be provided.

In the above embodiment, as shown in FIG. 8, the upper surface of the margin portion E3 of the cardboard sheet E is bonded and integrated with the lower surface of the other end portion E2 of the cardboard sheet E with an adhesive. The transfer device A for assembling the cardboard sheet E into a cardboard box has been described. As shown in FIG. 9, the upper surface of the other end E2 of the cardboard sheet E is bonded to the lower surface of the margin E3. When assembling the cardboard sheet E into a cardboard box by integrating them, instead of protruding the projection 111a on the cardboard sheet holding surface 11a of the upper conveyor belt 1a, the cardboard sheet E is attached to the cardboard sheet holding surface 31a of the lower conveyor belt 3a. Convex part
In addition to projecting the projection 311a and projecting the projection 311b on the cardboard sheet sandwiching surface 31b of the lower conveyor belt 3b, a projection 111b is projected on the cardboard sheet sandwiching surface 11b of the upper conveyor belt 1b. Good.

Further, in the above embodiment, the upper and lower conveyor belts 1b (3b) holding the other end of the cardboard sheet E are used.
Of the cardboard sheet holding surface 11b (31b)
(311b) has been described as being protruded.
(311b) may be protruded as needed.

Lastly, in the above embodiment, the case where the upper and lower conveyor belts 1 and 3 are provided only at the positions corresponding to both ends of the cardboard sheet E has been described, but as shown in FIG. Left and right conveyor belts 1a, 3a,
One or more pairs of upper and lower conveyor belts 1 and 3 may be arranged between 1b and 3b. In this case, the cardboard sheet sandwiching surfaces 11 of the upper and lower conveyor belts 1 and 3 arranged in the center,
31 is formed on a flat surface, similarly to a conventional conveyor belt.

[0036]

According to a first aspect of the present invention, there is provided a cardboard sheet transfer apparatus for holding a cardboard sheet between a pair of upper and lower conveyor belts and transferring the cardboard sheet forward, wherein a slotter process is performed. A protrusion for damaging the surface of the cardboard sheet is provided on at least one of the cardboard sheet holding surfaces of the upper and lower conveyor belts for holding one end of the cardboard sheet in which the glue margin is formed. Therefore, the glue margin surface formed by the slotter process at one end of the cardboard sheet is damaged by the convex portion of the conveyor belt, and is in a state where countless tears are formed. Part of the adhesive applied to the glue margin is smoothly and reliably adhered to the tear. Is reliably particle course on the marginal portion surface by an anchor effect to penetrate into.

Accordingly, in the next step of assembling the cardboard sheet into the cardboard box, the bonding and integration of the other end of the cardboard sheet with the glue margin is performed by bonding the glue margin securely to the glue margin. It is performed reliably by the agent, and during the assembling process of the cardboard sheet into the cardboard box, there is no unexpected situation that the other end of the cardboard sheet is separated from the glue margin, and the cardboard sheet is transferred to the cardboard box. Can be performed smoothly and reliably.

Further, when the cardboard sheet is sandwiched between the upper and lower conveyor belts, at least one of the upper and lower surfaces of one end of the cardboard sheet is a convex formed on the cardboard sheet clamping surface of the upper and lower conveyor belt. The part is in a state of being recessed, and there is no possibility of unexpected slippage with respect to the upper and lower conveyor belts.

Accordingly, there is no need to pinch the cardboard sheet between the upper and lower conveyor belts with a large force, and the cardboard sheet is pinched between the upper and lower conveyor belts without a large force and is transported forward without fail. be able to.

As described above, since the pinching force of the cardboard sheet by the upper and lower conveyor belts can be suppressed to a low level, the load on the motor for driving the upper and lower conveyor belts can be reduced, and therefore the motor for driving the upper and lower conveyor belts can be reduced. , A low-torque motor can be used.

According to a second aspect of the present invention, there is provided a cardboard sheet transfer apparatus according to the first aspect, wherein the pair of upper and lower conveyor belts sandwich one end of the cardboard sheet. An upper clamping surface in the vertically opposed clamping surface, a lower clamping surface in the vertically opposed clamping surface that clamps the other end of the cardboard sheet, or a lower clamping surface in the vertically opposed clamping surface that clamps one end of the cardboard sheet. The upper holding surface of the upper and lower opposing holding surfaces for holding the other end portion of the cardboard sheet is provided with a projection for projecting the surface of the cardboard sheet, so that the cardboard sheet may be glued in a separate process. A surrogate portion, a ruled line and a slotter are formed, and the cardboard sheet is bent from the ruled line, and the other end of the cardboard sheet is glued to the other end. When bonding the cardboard sheet, the surface of both the other end of the cardboard sheet and the glue margin is scratched by the protrusion projecting from the cardboard sheet sandwiching surface, and countless tears are formed. The adhesive for bonding the other end of the cardboard sheet to the glue margin is smoothly and reliably inserted into the other end of the cardboard sheet and the glue margin through the tear portion attached thereto. Therefore, the other end of the corrugated cardboard sheet is securely integrated with the glue margin by an adhesive, and the other end of the corrugated cardboard sheet and the glue margin are assembled in a process of assembling the cardboard sheet into a cardboard box. A situation in which the cardboard sheet is unexpectedly separated does not occur, and the process of assembling the cardboard sheet into the cardboard box can be performed smoothly and reliably.

According to a fourth aspect of the present invention, there is provided a cardboard sheet transferring apparatus according to any one of the first to third aspects, wherein the surface of the cardboard sheet is water-repellent. And, since the surface of the cardboard sheet is configured to be exposed by damaging the surface of the cardboard sheet by the protrusions, the cardboard sheet is subjected to water repellency even if the surface of the cardboard sheet is water-repellent. A part of the water-repellent layer on one end surface of the corrugated cardboard sheet is broken and torn by the convex portions protruding from the cardboard sheet holding surfaces of the upper and lower conveyor belts, so that the cardboard card cloth is exposed. Therefore, in another step, the surface of the glue margin formed at one end of the cardboard sheet is in a state where the cloth of the cardboard sheet is exposed, and the adhesive applied to the glue margin is the glue margin. Smoothly penetrates into the exposed corrugated cardboard sheet fabric and is reliably layered on the glue margin surface, so that in the next step, the adhesive integration between the other end of the cardboard sheet and the glue margin can also be reliably performed. Also, the process of assembling the cardboard sheet into the cardboard box can be performed smoothly and reliably.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a cardboard sheet processing machine provided with a cardboard sheet transfer device of the present invention.

FIG. 2 is a schematic side view showing the cardboard sheet transfer device of FIG.

FIG. 3 is a schematic plan view showing the cardboard sheet transfer device of FIG. 1;

FIG. 4 is a partially enlarged schematic side view showing the cardboard sheet transfer device of FIG. 2;

5 is a schematic longitudinal sectional view showing a state where one end of a cardboard sheet is held between upper and lower conveyor belts in the cardboard sheet transfer device of FIG. 2;

6 is a schematic longitudinal sectional view showing a state where the other end of the cardboard sheet is held between upper and lower conveyor belts in the cardboard sheet transfer device of FIG. 2;

FIG. 7 is a plan view showing a cardboard sheet sandwiching surface of the conveyor belt on which convex portions are projected.

FIG. 8 is a side view showing a process of assembling the cardboard sheet into a cardboard box.

FIG. 9 is a side view showing a process of assembling the cardboard sheet into a cardboard box.

FIG. 10 is a schematic plan view showing another example of a cardboard sheet transfer device.

[Explanation of symbols]

 1, 1a, 1b Upper conveyor belt 11, 11a, 11b Upper cardboard sheet holding surface 111a convex portion 3, 3a, 3b Lower conveyor belt 31, 31a, 31b Lower cardboard sheet holding surface 311b convex portion A Cardboard sheet transfer device E Cardboard sheet E1 One end of cardboard sheet E2 The other end of cardboard sheet E3 Glue margin of cardboard sheet

Claims (4)

[Claims] 1. A cardboard sheet transfer device for holding a cardboard sheet between a pair of upper and lower conveyor belts and transferring the cardboard sheet toward the front, wherein one end of a cardboard sheet portion is formed by a slotter process. A convex portion for damaging the surface of the corrugated cardboard sheet is provided on at least one of the cardboard sheet clamping surfaces of the upper and lower conveyor belts for clamping the corrugated cardboard sheet. 2. In a pair of upper and lower conveyor belts, an upper sandwiching surface of a vertically opposed sandwiching surface that sandwiches one end of a cardboard sheet and a lower sandwiching surface of an upper and lower opposed sandwiching surface that sandwiches the other end of a corrugated cardboard sheet. 2. The cardboard sheet transfer device according to claim 1, wherein a projection for damaging the surface of the cardboard sheet is provided in a protruding manner. 3. In a pair of upper and lower conveyor belts, a lower holding surface of an upper and lower opposing holding surface for holding one end of a cardboard sheet and an upper holding surface of an upper and lower opposing holding surface for holding the other end of a cardboard sheet. 2. The cardboard sheet transfer device according to claim 1, wherein a projection for damaging the surface of the cardboard sheet is provided in a protruding manner. 4. The cardboard sheet according to claim 1, wherein the surface of the cardboard sheet is water-repellent, and the surface of the cardboard sheet is damaged by a convex portion to expose the cloth of the cardboard sheet. The cardboard sheet transfer device according to any one of claims 3 to 3.