JP2004001317A - Press roll for corrugated cardboard sheet and apparatus for pressing corrugated cardboard sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To press a corrugated cardboard sheet uniformly in the width direction in a press roll for the sheet and an apparatus for pressing the sheet. <P>SOLUTION: The press roll for the corrugated cardboard sheet presses the sheet 1 which is arranged to face a prescribed roll 11 in a corrugation machine, is stuck on corrugated core paper, and travels between it and the roll 11 to the roll 11 at an appropriate pressure. The press roll is constituted by being provided with a beam-shaped member 21 formed in the width direction of the sheet 1, roll bodies 31 which are arranged at intervals narrower than the thickness of the sheet 1 in the width direction of the sheet 1 to face the roll 11, and roll support members which are fitted to the member 21 movably to the roll 11, are formed individually to the roll bodies 31, and support the roll bodies 31 rotatably. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a corrugating machine, which is disposed opposite to a predetermined roll in a corrugating machine, and a corrugated cardboard sheet laminated with a corrugated core paper and traveling between the predetermined roll is applied to the predetermined roll with an appropriate pressure. The present invention relates to a corrugated sheet pressure roll and a corrugated sheet pressure apparatus.
[0002]
[Prior art]
In a corrugating machine for producing corrugated cardboard sheets, there are many places where it is desired to press the corrugated cardboard web with a uniform linear pressure distribution over the entire width of the machine. For example, there are the following two places.
[0003]
(1) glue machine
FIG. 8 is a schematic side view showing a glue machine of a general corrugating machine and a mechanical arrangement around the glue machine.
The single-stage web 1 bonded by a single facer (not shown) is coated with glue on the top of the core paper 1a by a glue machine 2, and then the liner 3 and the double facer are supplied from a line different from the single-stage web 1. 4 to form a double-faced corrugated cardboard web 77.
The glue machine 2 will be described. In the glue machine 2, a sizing roll 11 is rotatably supported on frames 10, 10 erected on both sides in the width direction of the single-stage web 1, respectively. The web 1 is driven by a driving device (not shown) and rotates at a peripheral speed substantially equal to the traveling speed of the single-stage web 1.
[0004]
Below the sizing roll 11, a sizing tank 12 in which the lower part of the sizing roll 11 is immersed is provided, and the glue stored in the sizing tank 12 is rotated by the sizing roll 11. Is applied to the step top 1a of the single-step web 1. At this time, the glue adhered to the peripheral surface of the sizing roll 11 has a uniform thickness by the doctor roll 13 arranged opposite to the sizing roll 11 before being applied to the step top 1a of the single-stage web 1. Squeezed.
[0005]
The single-stage web 1 is pressed against the surface of the sizing roll 11 by the rider roll 14, and the rider roll 14 is rotatably attached to the center of the arm 15. The arm 15 has one end attached to the frame 10 by a pin 18 and is swingably supported by the frame 10. The other end (swinging end) of the arm 15 is connected to a pressurizing device (here, an air cylinder) 16 attached to the frame 10. Further, a stopper 17 is provided between the swing end of the arm 15 and the single-stage web 1. The reason for providing the stopper 17 will be described below.
[0006]
FIG. 9A is a diagram schematically showing a state where one-stage web 1 is sandwiched between two rolls R, and FIG. 9B is a diagram schematically showing a state where two-sided corrugated web 77 is sandwiched between two rolls R. FIG. As can be seen from FIG. 9 (b), in the case of the double-faced corrugated cardboard web 77, there are liners 1b, 3 on both sides of the core paper 1a, and the core paper 1a has its peaks (step tops) bonded to these liners 1b, 3. And the pressing force F applied from the roll R to the double-faced corrugated cardboard web 77 is dispersed to the liners 1b and 3 on both sides, so that the force acting on the core paper 1a is reduced by that much, It is hard to collapse.
[0007]
On the other hand, as shown in FIG. 9A, in the case of the single-stage web 1, there is nothing that restricts the deformation of the core paper 1a on one surface side (the side directly hitting the roll R) of the core paper 1a. The core paper 1a is freely and easily deformed. That is, the single-stage web 1 (core paper 1a) is greatly crushed by a small pressing force F including the own weight of the roll R.
The above-described rider roll 14 shown in FIG. 8 is a single roll whose axis length is the entire length of the machine width, and since it rotates at high speed, it needs to have a bending rigidity of a predetermined value or more to suppress vibration and the like. Yes, the weight becomes relatively heavy. For this reason, if the self-weight of the rider roll 14 is applied to the single-stage web 1 as it is, the single-stage web 1 is easily crushed as described above.
[0008]
Therefore, the pressure applied to the single-stage web 1 by the rider roll 14 is set by setting the gap dimension C between the gluing roll 11 and the rider roll 14 shown in FIG. 8 to a predetermined dimension smaller than the thickness T of the single-stage web 1. Done. That is, the pressing force is given by a crushing allowance (amount of pressurization) P (= TC) which is a difference between the gap dimension C and the thickness T of the single-stage web 1.
[0009]
This gap dimension C is kept constant by pressing the arm 15 against the stopper 17 by the air cylinder 16, and the size is set by the stopper 17. That is, the stopper 17 has the eccentric rotation shaft 17a, and by adjusting the rotation position of the stopper 17, the contact position between the stopper 17 and the arm 15 can be adjusted. That's it.
[0010]
If the gap C is too large, the contact between the single-stage web 1 and the sizing roll 11 becomes insufficient, and poor gluing to the single-stage web 1 occurs. Conversely, if the gap C is too small, the single-stage web 1 becomes Since it is crushed and the quality of the manufactured corrugated cardboard sheet is deteriorated, it is necessary to adjust the gap size C according to the thickness of the single-stage web 1 so that the gap size C is always an appropriate size. is there.
The arm 15 can be lifted out of the pass line of the single-stage web 1 as shown by a two-dot chain line in FIG. 8 so as not to hinder the work when removing or cleaning a paper jam. It has become.
[0011]
(2) Cut-off unit
FIG. 10 is a schematic diagram showing the configuration of the cutoff 73. In the example shown in FIG. 10, the cutoff 73 is configured as a double cutoff composed of an upper unit 73a and a lower unit 73b.
[0012]
The double-faced corrugated cardboard web 77 bonded by the double facer 4 (see FIG. 8) is slit in the web flow direction (conveying direction) by a slitter scorer 71 disposed upstream of the cutoff 73, and then the web director 75. As a result, the web 77a goes to the upper cutoff unit 73a and the web 77b goes to the lower cutoff unit 73b.
[0013]
In other words, the web director 75 has a plurality of director bodies arranged in the sheet width direction, and these director bodies are configured to be able to swing up and down with the downstream end as the swing end, and the cutoff With the slit position of the double-sided cardboard web 77 by 73 as a boundary, the director body on one side is swung upward to cut the double-sided cardboard web 77a passing over these director bodies via the guide table 79a. The double-sided corrugated cardboard web 77b that guides to the off unit 73a and swings the director body on the other side downward to pass over these director bodies is guided to the lower cutoff unit 73b via the guide table 79b. It is supposed to do it.
[0014]
The webs 77a, 77b sorted by the web director 75 in this manner are finally pulled by the feed rolls 83a, 83b provided at the entrances of the cut-off units 73a, 73b, respectively, to the cut-off units 73a, 73b. Sent. In each of the cut-off units 73a and 73b, cutting rolls 74 and 74 are arranged to face each other with the web path line therebetween. Cutting blades 74a are provided on the peripheral surface of each cutting roll 74 along the axial direction. These cutting blades 74a face each other with the webs 77a and 77b interposed every time the cutting roll 74 makes one rotation. 77a and 77b are cut to a predetermined length along the sheet width direction. These sheets are sent out by sending-out rolls 89a and 89b provided at the outlets of the cut-off units 73a and 73b, respectively, and are stacked on stacker conveyors 93a and 93b which are arranged vertically. It is carried to a post-process (not shown) by the stacker conveyors 93a and 93b.
[0015]
[Problems to be solved by the invention]
However, the above-mentioned (1) glue machine and (2) cut-off unit have the following problems.
(1) glue machine
There are various types of papers of the web (web forming the corrugated cardboard sheet) to be bonded by the corrugating machine, and the thickness thereof is also various from a thick one to a thin one. For this reason, the thickness of the single-stage web 1 also changes. As described above, in order to ensure the quality of the manufactured corrugated cardboard sheet, it is necessary to appropriately set the gap size C between the gluing roll 11 and the rider roll 14 according to the thickness of the single-stage web 1. Therefore, every time the thickness of the single-stage web 1 changes, the gap dimension C must be adjusted by the stopper 17 (see FIG. 8). Further, the thickness of the single-stage web 1 may be changed not only by the difference in the paper thickness of the web forming the single-stage web 1 but also by other factors. For example, if the step roll for stepping the core paper 1a is worn and the step height of the core paper 1a changes, the thickness of the single-layer web 1 also changes. For this reason, it is necessary to adjust the gap dimension C in consideration of various fluctuation factors of the thickness of the single-stage web 1, but it is difficult to perform such adjustment accurately.
[0016]
Further, as shown in FIG. 11, the glue roll 11 and the rider roll 14 have a relatively long shaft length (width) and are relatively heavy, and therefore are bent downward by their own weight. Therefore, the gap size C between the gluing roll 11 and the rider roll 14 is not constant in the roll width direction. Such bending of the rolls 11 and 14 also changes depending on the width dimension of the single-stage web 1 and the magnitude of the elastic reaction force that the rider roll 14 receives from the single-stage web 1. The deflection of the rolls 11 and 14 cannot be dealt with by permanent means such as crowning the rolls 11 and 14.
[0017]
(2) Cut-off unit
FIG. 12 is a schematic diagram showing a cross section XX (a cross section of the upper unit 73a at the installation position of the feed rolls 83a and 83b) of FIG. 10, and FIG. 13 is a cross section YY of FIG. 10 (a cross section of the lower unit 73b). It is a schematic diagram which shows the cross section at the installation position of the feed rolls 83a and 83b. Note that the cross-sectional view at the installation position of the upstream-side feed rolls 83a and 83b is the same as the cross-sectional view at the installation position of the downstream-side feed rolls 89a and 89b. Also, it is used as a cross-sectional view at the installation position of the delivery rolls 89a and 89b. Reference numerals as cross-sectional views at the installation positions of the delivery rolls 89a and 89b are shown in parentheses in FIGS.
[0018]
Each of the feed rolls 83a and 83b and the feed rolls 89a and 89b is composed of a single roll as shown in FIGS. Then, one of the rolls 83a and 83b (rolls 89a and 89b) (the upper roll 83a (89a) in FIGS. 12 and 13) stabilizes the web 77a or the web 77b. The roller 85 is pressed by the spring 85 toward the other roll (the lower roll 83b (89b) in FIGS. 12 and 13) so that the sheet can be conveyed.
[0019]
When the cutoff unit 73 is a double cutoff, the double-sided corrugated cardboard web 77 is divided into a web 77a going to the upper cutoff unit 73a and a web 77b going to the lower cutoff unit 73b, as described above. In this case, as shown in FIGS. 12 and 13, the double-faced corrugated cardboard web 77 is supplied separately on the left and right sides of the slit. As a result, the webs 77a and 77b run on one side in the width direction with respect to the rolls 83a and 83b (rolls 89a and 89b).
[0020]
Therefore, the feed rolls 83a and 83b and the feed rolls 89a and 89b press the webs 77a and 77b with the right half and the left half of the rolls, and the rolls 83a (89a) pressed by the springs 85 are inclined. , One end in the width direction of the webs 77a, 77b is crushed, or the distribution of pressure (linear pressure distribution) on the webs 77a, 77b along the width direction becomes non-uniform. Is pulled by an uneven force, so that the webs 77a and 77b do not move straight and meander.
[0021]
The present invention has been made in view of such problems, and has been made to provide a pressure roll for a corrugated cardboard sheet and a corrugated cardboard sheet pressurizing device that can press the corrugated cardboard sheet with a uniform pressure distribution in the width direction. The purpose is to provide.
[0022]
[Means for Solving the Problems]
For this reason, the pressure roll (corresponding to claim 1) of the corrugated cardboard sheet of the present invention is disposed opposite to a predetermined roll in a corrugating machine, and a corrugated core paper is stuck on one side to provide a gap between the predetermined roll. A corrugated cardboard sheet that travels, is pressurized against the above-mentioned predetermined roll with an appropriate pressure, a pressure roll of the corrugated cardboard sheet, and a beam-shaped member that is stretched along the width direction of the corrugated cardboard sheet; A plurality of support members are provided along the width direction of the corrugated cardboard sheet and are attached to the beam-like member so as to be movable in a substantially radial direction with respect to the predetermined roll, and each of the support members is rotatably supported by the support member. It is characterized in that it comprises a roll main body disposed at a smaller interval than the thickness of the corrugated cardboard sheet and opposed to the predetermined roll.
[0023]
It is preferable that a roll interval adjusting means for individually adjusting each interval between the plurality of roll bodies and the predetermined roll is provided.
For example, if the support member is swingably attached to the beam-like member, the roll gap adjusting means may be a swing-amount adjusting means for individually adjusting the swing amount of the support member with respect to the beam-like member. May be used.
Preferably, an urging means for urging the roll body toward the predetermined roll is provided, and the urging means is provided between each of the plurality of support members and the beam member. The elastic member is preferably provided in a compressed state.
[0024]
Further, it is preferable that a compression amount adjusting means for adjusting the compression amount of the elastic member is provided. The compression amount adjusting means includes a sliding member individually provided on the elastic member, one end of the elastic member being fixed, and slidably mounted on the beam-like member, and extending or retracting the elastic member. It is preferable to include a sliding member moving means for simultaneously moving the sliding members in the moving direction.
Each interval between the roll body and the predetermined roll is set to be narrower by 0.1 mm to 0.2 mm than the thickness of the corrugated cardboard sheet traveling between the roll body and the predetermined roll. Is preferred.
[0025]
The corrugated cardboard sheet pressurizing device of the present invention (claim 9) is arranged in a corrugating machine so as to face a predetermined roll, and a corrugated cardboard which is attached to one side of a corrugated core paper and runs between the predetermined roll. A pressurizing device for a corrugated cardboard sheet, which presses the sheet against the above-mentioned predetermined roll with an appropriate pressure, wherein a beam-like member stretched along the width direction of the corrugated cardboard sheet, A plurality of support members disposed along the width direction and attached to the beam-shaped member so as to be movable in a substantially radial direction with respect to the predetermined roll, and opposed to the predetermined roll supported by each of the support members The corrugated cardboard, wherein the corrugated board travels between the pressurizing member and the predetermined roll, with each interval between the pressurizing member and the predetermined roll. Than sheet thickness 0.1mm~0.2mm is characterized in that it is only narrowly set.
[0026]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(1) First embodiment
1 to 4 are views showing a pressure roll (pressing device) of a corrugated cardboard sheet as a first embodiment of the present invention, and FIG. 1 is a schematic front view of a glue machine (from the traveling direction of the corrugated cardboard sheet). FIG. 2 is a front view showing a partial configuration thereof, and FIG. 3 is a detailed view (partially cut away) of FIG. 1 and FIG. FIG. 4 is a schematic side view showing a configuration of a main part, which is a cross-sectional view taken along line BB of FIG. 1, and FIG. 4 is a schematic plan view (a top view of FIG. 3) showing the configuration of the main part. Is shown in cross section).
[0027]
The components described in the above-described related art are denoted by the same reference numerals, and description thereof is omitted.
As shown in FIG. 1, a pressure roll (pressure device) according to a first embodiment of the present invention has a plurality of roll bodies 31 disposed opposite to a gluing roll (predetermined roll) 11. It has a configuration. The roll main body 31 has a relatively short axial length, and a plurality of roll main bodies 31 are arranged at minute intervals along the machine width direction (= width direction of the corrugated cardboard sheet, hereinafter, also simply referred to as width direction).
[0028]
Hereinafter, the structure of the present pressure roll will be described in detail. In the present pressure roll, as shown in FIG. 1, a beam 21 is provided between the left and right frames 10 of the glue machine main body above the gluing roll 11. Has been passed over.
As shown in FIGS. 3 and 4, a support base 23 is protruded from a lower part of the front of the beam 21. The support base 23 is provided over the entire width of the machine at appropriate intervals along the width direction. The support 23 is attached to the beam 21 by welding or bolting (here, attached by welding).
[0029]
Further, an arm (support member) 25 is attached to a tip of each support base 23. Each arm 25 has its intermediate portion inserted through a pin 27 attached to the tip of the support 23, and is swingable with respect to the support 23. A shaft 29 is inserted into the end of each arm 25 on the side of the glue roll 11, and the roll body 31 is rotatably supported on each shaft 29 via a bearing 33. Each of these roll bodies 31 is disposed so as to face the gluing roll 11.
As shown in FIG. 3, a lever portion 25a is provided at an end of the arm 25 supporting the roll body 31 on the beam 21 side. The lever portion 25a is positioned so as to face a lower horizontal portion 41c of the elevating plate 41 described later, and a compression spring (biasing means, elastic member) 61 is provided between the lever portion 25a and the lower horizontal portion 41c. Is inserted. In FIG. 3, the compression spring 61 urges the lever 25 a (arm 25) counterclockwise about the pin 27, and urges the roll body 31 at the tip of the lever toward the glue roll 11. It has become. It should be noted that a rubber material in a compressed state may be interposed between the lever portion 25a and the lower horizontal portion 41c instead of the compression spring as the urging means and the elastic member.
[0030]
An eyebolt 65 is attached to the lever portion 25a of the arm 25 so that the compression spring 61 is inserted therethrough. One end of the eyebolt 65 is fixed to the lever portion 25 a by the pin 63, and the other end thereof is inserted through a hole formed in the support base 23 or the lower horizontal portion 41 c of the elevating plate 41, and is positioned below the support base 23. Through. A nut 67 is screwed to the other end of the eyebolt 65 outside the support base 23 (on the side not facing the lever portion 25a).
[0031]
The eyebolt 65 and the nut 67 constitute the swing amount adjusting means (roll interval adjusting means) of the present invention. That is, the eye bolt 65 is urged upward by the compression spring 61 integrally with the lever portion 25a, and the eye bolt 65 tries to be detached from the support base 23. The eyebolt 65 is set larger than the hole of the support base 23 to be inserted, so that the eyebolt 65 does not detach from the support base 23. Thereby, the movement of the eyebolt 65 is regulated, and the swing of the roll body 31 connected to the eyebolt 65 and the arm 25 can be regulated. Then, by rotating the nut 67 on the eyebolt 65 to adjust the vertical position of the nut 67, the amount of swing of the roll main body 31, and furthermore, the clearance dimension (interval) C between the roll main body 31 and the gluing roll 11 is determined. It can be adjusted every time.
[0032]
This gap size C (mm) is appropriately set according to the thickness T (mm) of the single-stage web (corrugated cardboard sheet) 1 sent between the roll body 31 and the sizing roll 11. It is preferable that the value be a numerical value (mm) that satisfies the relationship of Expression (1). That is, the gap dimension C is preferably smaller than the thickness T of the single-stage web 1 by 0.1 mm to 0.2 mm.
0.1 mm <TC <0.2 mm (1)
[0033]
This reason can be explained with reference to FIG. FIG. 5 shows the compression characteristics of the single-stage web 1. The horizontal axis represents the compression displacement L of the single-stage web 1 corresponding to the difference between the thickness T of the single-stage web 1 and the gap dimension C, and the vertical axis represents the single-stage web 1. This is the load F acting on.
As shown in FIG. 5, when the compression displacement L exceeds 0.1 mm, the load F acting on the single-stage web 1 sharply increases. When the compression displacement L exceeds 0.2 mm, the single-stage web 1 buckles and the load F increases. I quit and started to descend. That is, if the compression displacement L is in the range of 0.1 mm to 0.2 mm, a load can be sufficiently applied to the single-stage web 1 within a range where buckling is not caused.
[0034]
However, in the present pressurizing device, it is not necessary to adjust the gap dimension C so as to strictly satisfy the above equation (1) every time the thickness of the single-stage web 1 changes. That is, since the roll main body 31 is configured to be divided in the width direction with respect to a single conventional rider roll, the roll main body 31 is hardly bent as compared with the above-described conventional rider roll and does not require high rigidity. By itself, it is possible to reduce the weight of the single-stage web 1 more than by compressing the web 1 by 0.1 mm. The roll body 31 is urged toward the sizing roll 11 by a compression spring 61, and the gap between the sizing roll 11 and the roll body 31 is reduced due to the light weight of the roll body 31 as described above. , 31 naturally changes according to the thickness of the single-stage web 1 running between the webs. That is, the difference in the thickness of the single-stage web 1 can be absorbed to some extent by the elasticity of the compression spring 61, and the equation (1) is strictly calculated every time the thickness of the single-stage web 1 changes. It is not necessary to readjust the gap dimension C so as to satisfy the gap.
[0035]
As shown in FIGS. 3 and 4, an elevating plate (sliding member) 41 is attached to the front of the beam 21 above the support table 23 via a guide 43 so as to be slidable up and down. I have. As shown in FIG. 3, the elevating plate 41 has a vertical portion 41a, an upper horizontal portion 41b, and a lower horizontal portion 41c, and the vertical portion 41a is attached to the guide 43. The upper horizontal portion 41 b of the lifting plate 41 covers the upper surface of the beam 21.
[0036]
A wedge 45 is attached to the lower surface of the upper horizontal portion 41b of each lifting plate 41. As shown in FIG. 2, the lower surface of each of these wedges 45 is formed on a slope. Each wedge 45 is placed on the slope of the upper surface of the wedge 47 provided for each wedge 45. The wedge 47 has a shape wider than the wedge 45 and is installed on the upper surface of the beam 21. The wedges 47 are connected to each other by a connecting shaft 49, and the connecting shaft 49 is inserted into a guide 51 provided at a predetermined interval on the upper surface of the beam 21. Further, a rack 53 driven by a motor 57 via a pinion 55 is attached to a predetermined portion of the connection shaft 49, and the wedges 45 and 47, the connection shaft 49, the rack 53, the pinion 55, and the motor 57 The sliding member moving means of the present invention is constituted, and is driven by the motor 57 so that the elevating plate 41 can be raised and lowered at the same time.
[0037]
That is, when the motor 57 is operated, the connecting shaft 49 moves by a predetermined amount in the machine width direction while being guided by the guide 51 via the pinion 55 and the rack 53, and the wedge 47 is integrally formed with the connecting shaft 49. They move all at once along the machine width direction. As a result, the wedge 45 moves up and down on the slope of the wedge 47 at the same time, and the lift plate 41 moves up and down integrally with the wedge 47. In FIG. 2, when the wedge 47 is moved to the left side in the figure, the elevating plates 41 are simultaneously raised, and when the wedge 47 is moved to the right side in the figure, the elevating plates 41 are simultaneously lowered. ing.
[0038]
The upper surface of the beam 21 is provided with a sliding surface 21a whose surface is finished smoothly, so that the wedge 47 can slide on the beam 21 smoothly.
The pressure roll of the corrugated cardboard sheet according to the first embodiment of the present invention is configured as described above, and each roll body 31 has a short width and is individually supported by the beam 21. It does not require the high bending stiffness of a lidar roll. Therefore, the weight of the roll body 31 per unit length in the machine width direction can be sufficiently reduced as compared with the conventional rider roll. Thereby, the force for pressing the single-stage web 1 against the gluing roll 11 can be mainly given by the repulsive force of the compression spring 61.
[0039]
The arm 25 supporting the roll body 31 tries to rotate the pressing roll 1 in a direction to approach the gluing roll 11 by receiving the repulsive force of the compression spring 61 from the lever portion 25a. When a predetermined distance (gap size) C from the roll 11 is reached, the nut 67 at the tip of the eyebolt 65 attached to the lever 25a hits the support base 23 so that the pressure roll 1 does not approach the glue roll 11 any more. Position is regulated. The gap dimension C can be set to a predetermined size by adjusting the position of the nut 67 with respect to the eyebolt 65.
[0040]
In the present pressurizing device, the gap dimension C does not need to be strictly adjusted to the thickness T of the single-stage web 1 as in the conventional case, and may be set to an appropriate gap in which the roll body 31 does not hit the glued roll 11. . That is, in the conventional structure, since the rider roll is relatively heavy, regardless of the presence or absence or the thickness of the single-stage web 1 between the rider roll and the sizing roll 11, the rider roll and the sizing roll 11 Since the gap size C does not change and the amount of pressure applied to the single-stage web 1 is uniquely determined by the preset gap size C, the gap size C is determined in advance according to the thickness T of the single-stage web 1. Had to be strictly adjusted.
[0041]
On the other hand, in the present pressurizing device, when the single-stage web 1 enters between the sizing roll 11 and the roll main body 31, the compression spring 61 contracts and the roll main body 31 moves away from the sizing roll 11, so that Even if the thickness of the single-stage web 1 is changed, if the amount of change in the thickness is small, or if the step roll for stepping the core paper 1a is worn, the step height of the core paper 1a changes slightly. In such a case, the gap between the sizing roll 11 and the roll body 31 is automatically adjusted, so that the trouble of resetting the gap dimension C can be saved. In particular, when a core paper having a small basis weight is used, the core paper is easily thinned and crushed. However, even in this case, the pressing device presses the single-stage web 1 with the compression spring 61, so that the core paper is crushed more than before. Can be prevented.
[0042]
Further, when the paper quality or flute of the single-stage web 1 is changed and the pressing force of each roll body 31 on the single-stage web 1 is changed, the motor 57 is operated to move the wedge 47 and the elevating plate 41 is moved up and down. Just fine.
Thereby, in each roll body 31, at the same time, the interval between the lever portion 25a sandwiching the compression spring 61 and the lower horizontal portion 41c of the elevating plate 41 changes, so that the compression amount of the compression spring 61 changes. The repulsion force of 61 (= the pressure applied to the single-stage web 1 by the roll body 31) can be changed simultaneously. Specifically, the pressing force of the roll body 31 can be increased by raising the elevating plate 41, while it can be reduced by lowering the elevating plate 41.
[0043]
As described above, there is an advantage that the pressure applied to the single-stage web 1 by each roll body 31 can be changed simultaneously and easily.
Further, since the pressure roller 31 has a shorter shaft length as compared with the conventional rider roll, the bending in the axial direction is suppressed, and the single-stage web 1 can be pressed against the sizing roll 11 with a uniform force in the width direction. There is an advantage that the single-stage web 1 can be uniformly glued in the width direction.
[0044]
In addition, since the gap between each roll body 31 and the gluing roll 11 can be adjusted individually, even when the gluing roll 11 is bent by its own weight, by adjusting the gap individually for each roll body 31, There is an advantage that the pressure applied to the single-stage web 1 by each roll body 31 and the gluing roll 11 can be set equal.
[0045]
(2) Second embodiment
6 and 7 are schematic views showing an example in which a pressure roll (pressing device) of a corrugated cardboard sheet is applied to a cutoff feed roll or a feed roll as a second embodiment of the present invention, and FIG. FIG. 7 is a diagram corresponding to FIG. 12 used to explain a technical problem, and FIG. 7 is a diagram corresponding to FIG. 13 used to describe a conventional problem. The pressure roll of the corrugated cardboard sheet of the present embodiment is used in place of the feed roll 83a (or the feed roll 89a) in the upper unit 73a and the lower unit 73b of the cutoff 73 shown in FIG. As shown in FIG. 6 and FIG. 7, the feed roller is disposed to face a lower feed roll (predetermined roll) 83b. 6 and 7, only the roll body 31 is simply shown. However, the pressure roll of the present embodiment is configured in the same manner as the first embodiment, and includes the beam 21, the compression spring 61, and the swing amount adjusting means. (Roll interval adjusting means).
[0046]
The pressure roll of the corrugated cardboard sheet according to the second embodiment of the present invention is configured such that a plurality of roll bodies 31 arranged in the machine width direction are independently attached to and separated from the opposing feed roll 83b (or feed roll 89b). The first embodiment has the following advantages, in addition to the same effects as those of the first embodiment.
That is, in the cutoff 73, as shown in FIGS. 6 and 7, when the double-sided corrugated cardboard web (corrugated cardboard sheet) 77 runs at a position deviated in the machine width direction, as described above as the description of the related art. There is. In such a case, in the case of a single real roll provided over the entire width of the machine as in the related art, the roll is inclined and the pressure distribution (linear pressure) along the machine width direction becomes non-uniform. In this pressurizing roll, only the roll body 31 at the running position of the double-faced corrugated web 77 independently presses the double-faced corrugated web 77, so that the linear pressure can be made uniform. Therefore, there is an advantage that the double-sided corrugated cardboard web 77 can be suppressed from being crushed or meandering.
[0047]
In the present embodiment, an example has been described in which the upper pressure roll 83a (or the feed roll 89a) is replaced with the main pressure roll in the upper unit 73a and the lower unit 73b of the cutoff 73 shown in FIG. However, a main pressure roll may be used instead of the lower feed roll 83b (or the feed roll 89b).
(3) Other
In addition, the pressure roll of the cardboard sheet and the pressure device of the cardboard sheet of the present invention are not limited to the configuration of each of the above-described embodiments, and can be variously modified without departing from the spirit of the present invention.
[0048]
For example, in the above-described embodiment, an example in which the beam 21 is fixed to the frame 10 of the glue machine has been described. However, if the beam 21 is supported on the frame 11 so as to be able to slide up and down with respect to the frame 11, at the time of cleaning or the like, The roll body can be largely released from the glued roll 11 and the like integrally with the beam 21.
In the above embodiment, the moving means of the lifting plate (sliding member) 41 uses the wedges 45 and 47, the rack 53, the pinion 55, and the like to move the lifting plate 41 of each pressure roll simultaneously. However, for example, a motor for elevating may be attached to each elevating plate 41 and the operation of these motors may be interlocked.
[0049]
Further, in each of the above-described embodiments, the example in which the pressing member for pressing the corrugated cardboard web against the predetermined roll is configured by the pressing roll, but the pressing member is configured by the pressing shoe, for example. Is also good.
Further, in the above embodiment, the roll interval adjusting means for adjusting each interval between the roll body 31 and the predetermined roll 11 is provided with a swing amount adjusting amount for adjusting the swing amount of the support member (arm) 25 supporting the roll body 31. Although the example constituted by the means has been described, for example, the support member 25 is attached to the beam member (beam) 21 so as to be movable in the radial direction of the predetermined roll 11, and the support member 25 is linearly moved with respect to the predetermined roll 11. It is also possible to constitute a roll interval adjusting means by means for moving forward and backward (for example, a mechanism comprising a pinion, a rack and a motor).
[0050]
【The invention's effect】
As described above in detail, according to the pressure roll of the corrugated cardboard sheet of the present invention (claim 1), a plurality of roll bodies arranged along the width direction of the corrugated cardboard sheet are integrated with the support member supporting the roll body. The corrugated cardboard sheet can be moved toward and away from the predetermined roll, so that even when the corrugated cardboard sheet travels in a position deviated in the width direction, the corrugated cardboard sheet is applied to the predetermined roll with a uniform pressure distribution in the width direction. There is an advantage that can be pressed.
[0051]
And since the roll main body is provided with two or more with respect to the width direction, the bending of the roll main body can be suppressed compared with providing a long roll over the whole machine width, and the predetermined roll bent in the width direction. Also, according to the shape of the bent roll, a plurality of roll bodies provided in the width direction can individually move toward and away from a predetermined roll. There is an advantage that pressure can be applied with a uniform pressure distribution in the direction.
[0052]
Further, by providing a roll interval adjusting means for individually adjusting each interval between the plurality of roll bodies and the predetermined roll, it is possible to more effectively press the corrugated cardboard sheet with a uniform pressure distribution in the width direction. become.
Further, by urging the roll body to a predetermined roll side by the urging means, the card body can be stably pressed against the predetermined roll by the roll body regardless of the thickness of the cardboard sheet. Become.
[0053]
In particular, the urging means is constituted by an elastic member interposed in a compressed state between each of the support member and the beam-shaped member, so that the difference in the specification (thickness and flute) of the corrugated cardboard sheet due to the elasticity of the elastic member. It becomes possible to absorb and pressurize the corrugated cardboard sheet with an appropriate pressure, and even if the specifications of the corrugated cardboard sheet are changed, depending on the degree of the change, it is not necessary to adjust the intervals between the roll body and the predetermined roll.
[0054]
In this case, if a compression amount adjusting means for adjusting the compression amount of the elastic member is provided, the corrugated cardboard sheet can be more effectively pressed with a uniform pressure distribution in the machine width direction.
Further, the compression amount adjusting means includes a sliding member provided on each of the elastic members, one end of the elastic member being fixed and slidably attached to the beam-like member, and a sliding member for extending and contracting the elastic member. When the specifications of the corrugated cardboard sheet are changed by providing a sliding member moving means for moving the moving member all at once, the amount of compression of the elastic member and, consequently, the pressure applied to the corrugated cardboard sheet by each pressure roll are simultaneously controlled. Can be changed to
[0055]
By setting each interval between the roll body and the predetermined roll narrower by 0.1 mm to 0.2 mm than the thickness of the corrugated sheet traveling between the roll body and the predetermined roll, the collapse of the cardboard sheet is prevented. In addition, there is an advantage that the corrugated cardboard sheet can be stably pressed against a predetermined roll.
According to the corrugated cardboard sheet pressing device of the present invention (claim 9), a plurality of pressing members arranged along the width direction of the corrugated cardboard sheet can be moved away from a predetermined roll integrally with the support member. Further, since the mutual distance between the pressing member and the predetermined roll is set to be narrower by 0.1 mm to 0.2 mm than the thickness of the cardboard sheet traveling between the pressing member and the predetermined roll, The advantage that the corrugated cardboard sheet can be pressed against a predetermined roll with a uniform pressure distribution in the width direction, and the corrugated cardboard sheet can be stably pressed against the predetermined roll while preventing collapse of the corrugated cardboard sheet. There is.
[Brief description of the drawings]
FIG. 1 is a schematic front view of a glue machine according to a first embodiment of the present invention.
FIG. 2 is a front view showing a partial configuration of a pressure roll of the corrugated cardboard sheet as the first embodiment of the present invention, and is a detailed view of a portion A in FIG.
FIG. 3 is a schematic side view showing a configuration of a main part of a pressure roll of the corrugated cardboard sheet according to the first embodiment of the present invention, and is a cross-sectional view taken along line BB of FIG.
FIG. 4 is a schematic plan view (top view of FIG. 3) showing a configuration of a main part of a pressure roll of a corrugated cardboard sheet as a first embodiment of the present invention (a pressure roll portion is shown in cross section).
FIG. 5 is a diagram for describing a preferable set value of a gap size between the roll body and the sizing roll, and is a schematic diagram illustrating compression characteristics of a single-stage web.
FIG. 6 is a schematic diagram showing a pressure roll (an example applied to a cutoff feed roll and a feed roll) of a corrugated cardboard sheet according to a second embodiment of the present invention, and is a view corresponding to FIG.
FIG. 7 is a schematic diagram showing a pressure roll (an example applied to a cutoff feed roll or feed roll) of a corrugated cardboard sheet as a second embodiment of the present invention, and is a view corresponding to FIG.
FIG. 8 is a schematic side view showing a glue machine of a general corrugating machine and a mechanical arrangement around the glue machine.
9A and 9B are diagrams for explaining that a single-stage web is more easily crushed than a double-sided corrugated cardboard sheet, and FIG. 9A is a diagram schematically illustrating a state where a single-stage web is sandwiched between two rolls R; (b) is a diagram schematically showing a state in which a double-faced corrugated cardboard sheet is sandwiched between two rolls R.
FIG. 10 is a schematic diagram showing a configuration of a conventional cutoff.
FIG. 11 is a schematic front view (as viewed from the running direction of the single-stage web 1) for explaining the problems of the conventional sizing roll 11 and the rider roll 14.
FIG. 12 is a schematic diagram showing a cross section XX of FIG. 10;
FIG. 13 is a schematic view showing a cross section YY of FIG. 10;
[Explanation of symbols]
1 Single-stage web (cardboard sheet)
1a Core paper
1b liner
2 glue machine
3 liner
4 Double Facer
10 frames
11 Glue roll (predetermined roll)
12 glue tank
13 Doctor roll
14 Lidar Roll
15 arm
16 Air cylinder
17 Stopper
18 pin
21 beams
21a Sliding surface
23 Support
25 arms (supporting members)
25a lever part
27 pin
29 axes
31 Roll body
33 Bearing
41 Elevating version
41a Vertical part
41b Upper horizontal part
41c Lower horizontal part
43 Guide
45 wedge
47 wedge
49 Connecting shaft
51 Guide
53 racks
55 pinion
57 motor
61 compression spring (biasing means, elastic member)
63 pins
65 Eye Bolt
67 nut
71 Slitter Scorer
73 Cutoff
73a Upper unit
73b Lower unit
75 Web Director
77 Double-sided corrugated web
77a Upper web (cardboard sheet)
77b Lower web (cardboard sheet)
79 Guide Table
79a Upper guide table
79b Guide table for lower stage
83 feed roll
83a Upper roll
83b Lower roll
85 spring
89 Delivery roll
89a Upper roll
89b Lower roll
93 Stacker conveyor
93a Upper stacker conveyor
93b Lower stacker conveyor
C gap
R roll
F Pressing force

Claims (9)

In a corrugating machine, a corrugated cardboard sheet, which is arranged opposite to a predetermined roll, is attached to one side of a corrugated core paper, and runs between the predetermined roll, is applied to the predetermined roll with an appropriate pressure. A pressure roll of corrugated cardboard sheet for pressing,
A beam-like member spanned across the width of the corrugated cardboard sheet,
A plurality of support members disposed along the width direction of the corrugated cardboard sheet and attached to the beam-like member so as to be movable in a substantially radial direction with respect to the predetermined roll;
A roll main body rotatably supported by each of the support members and disposed at an interval smaller than the thickness of the corrugated cardboard sheet and opposed to the predetermined roll. To press the corrugated sheet pressure roll. 2. The pressure roll for a corrugated cardboard sheet according to claim 1, further comprising a roll interval adjusting means for individually adjusting each interval between the plurality of roll bodies and the predetermined roll. The support member is swingably attached to the beam-like member,
The roll interval adjusting means,
3. The pressure roll for a corrugated cardboard sheet according to claim 2, wherein the pressure roll is a swing amount adjusting means for individually adjusting the swing amount of the support member with respect to the beam-shaped member. The pressure roll for a corrugated cardboard sheet according to any one of claims 1 to 3, further comprising an urging means for urging the roll body toward the predetermined roll. The pressure of the cardboard sheet according to claim 4, wherein the urging means is an elastic member interposed in a compressed state between the plurality of support members and the beam members. roll. 6. A pressure roll for a corrugated cardboard sheet according to claim 5, further comprising a compression amount adjusting means for adjusting a compression amount of said elastic member. The compression amount adjusting means,
A sliding member individually provided to the elastic member, one end of the elastic member being fixed, and slidably mounted on the beam-shaped member;
7. The pressure roll for a corrugated cardboard sheet according to claim 6, further comprising a sliding member moving means for simultaneously moving the sliding member in a direction in which the elastic member is extended or retracted. Each interval between the roll body and the predetermined roll is set to be narrower by 0.1 mm to 0.2 mm than the thickness of the corrugated cardboard sheet traveling between the roll body and the predetermined roll. The pressure roll for a corrugated cardboard sheet according to claim 1, wherein: In a corrugating machine, a corrugated cardboard sheet, which is arranged opposite to a predetermined roll, is attached to one side of a corrugated core paper, and runs between the predetermined roll, is applied to the predetermined roll with an appropriate pressure. A corrugated sheet pressurizing device,
A beam-like member spanned across the width of the corrugated cardboard sheet,
A plurality of support members disposed along the width direction of the corrugated cardboard sheet and attached to the beam-like member so as to be movable in a substantially radial direction with respect to the predetermined roll;
It is configured to include a pressing member supported by each of the support members and disposed opposite to the predetermined roll,
Each interval between the pressing member and the predetermined roll is set to be narrower by 0.1 mm to 0.2 mm than the thickness of the corrugated cardboard sheet traveling between the pressing member and the predetermined roll. A pressure device for a corrugated cardboard sheet.

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