JPS63216735A - Production unit for single-sided corrugated board - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a single-sided corrugated board manufacturing apparatus configured to selectively produce different types of single-sided corrugated boards with one apparatus.

As shown in FIG. 6, the conventional single-sided corrugated board manufacturing apparatus has an upper roll 30 and a lower roll 21 each having a corrugated stepped portion on their circumferential surface. (not shown) are arranged rotatably in a vertical relationship, and a press roll 12 is placed on the lower roll 21, and a core paper 4 is placed on the lower roll 21.
1 and a liner 43. The core paper 41 is attached to the upper roll 30 and the lower roll 21.
A required flute is formed by the interlocking of the flutes when the flute is supplied between the grooves and passes through the flute, and the top of the corrugated flute is filled with glue provided in the gluing mechanism 37 shown in FIG. A sizing agent is applied by the application roll 38. Also core paper 4
A liner 43 supplied from the opposite side of the core paper 12 via the press roll 12 is pressure-adhered to the corrugated top part of the core paper 41 between the press roll 12 and the lower roll 21.
A single-sided corrugated board 46 is manufactured.

Note that the single-sided corrugated board 46 is divided into five types: A flute, B flute, C flute, D flute, and E flute, depending on the height of the flute provided on the core paper 41 and the standard number of flutes per 30 cm. The selection of the type depends on the shape of the stepped portions of the upper and lower corrugated rolls mounted on the apparatus.

Problems to be Solved by the Invention As mentioned above, there are many corrugation types for single-sided corrugated board, and these corrugation types depend on the shape of the corrugated portions of the upper and lower corrugating rolls incorporated in the single-sided corrugated board production equipment. In order to support single-sided corrugated board production of multiple corrugation types using a single-sided corrugated board manufacturing device, it is necessary to completely replace the upper and lower corrugating rolls of the device with upper and lower corrugating rolls having a different corrugation type each time one corrugation type is changed. . However, this work of replacing corrugated rolls requires complicated labor and a lot of time. Moreover, the combinations of single-sided corrugated cardboard of different corrugation types that are selectively manufactured are not random, but are fixed combinations such as A flute and E flute, B flute and E flute, and C flute and E flute. It has become. Therefore, in the past, a configuration was adopted in which two types of single-sided corrugated board were manufactured within the range of the above-mentioned fixed combinations by installing two single-sided corrugated board manufacturing devices in parallel in a corrugator line and selectively switching their operation. ing.

This method of installing two single-sided corrugated board manufacturing machines in parallel includes:
Generally known are the tandem type, in which two units of this equipment are arranged in series in a front-to-back relationship in a corrugator line, and the double-deck type, in which two units of this equipment are stacked in two layers, one above the other, in a corrugator line. The reality is that one of the two methods is selectively adopted depending on the installation space of the production factory and other circumstances.

In each of the above-mentioned methods, it goes without saying that the installation cost doubles because two double-sided corrugated board manufacturing machines are installed in parallel, but the following difficulties have also been pointed out in terms of installation area, workability, ancillary equipment, etc. Ru.

■In the tandem type, two single-sided corrugated board production machines with the exact same mechanical configuration are installed in series, so at least the installation area for each machine is large, making effective use of limited space. I can't.

■With the double deck type, the installation area is sufficient for one unit, but
Since two identical single-sided corrugated board manufacturing machines are stacked on top of each other, the workability of the upper machine is significantly reduced.

■Power transmission mechanisms such as reducers, machine stands, and piping systems for steam, oil and pneumatics, etc. are all required for two units. Furthermore, a preheater,
Two sets of ancillary equipment such as take-up conveyors are also required to transport the single-sided cardboard produced by each device.

■It is also necessary to install two electrical control systems such as motors, control panels, and operation panels.

Therefore, as disclosed in FIG. 4 of Japanese Unexamined Patent Publication No. 54-143384, a pair of upper and lower corrugating rolls is pivotally supported on two sets of suspension members 30, and the suspension members 3o are rotated around a fixed shaft 31. , an apparatus has been proposed in which each set of corrugated rolls is selectively brought into contact with a pressure roll 34. However, since the upper and lower corrugating rolls have a large weight, the suspension member 3 is equipped with two sets of corrugating rolls.
In order to alternately switch between each set of corrugated rolls by rotating the corrugating roller approximately 180 degrees, an extremely large-scale drive mechanism and support mechanism are required, and high positioning accuracy is required when the corrugating roll is stopped. However, there is a drawback that the manufacturing cost increases.

Purpose of the Invention As mentioned above, the present invention has been made in view of the drawbacks inherent in the conventional corrugator line in which two single-sided corrugated board manufacturing devices were installed in parallel in order to selectively produce single-sided corrugated boards of different corrugation types. , was proposed to suitably solve this problem, and is capable of manufacturing different types of single-sided corrugated cardboard in one tier with a single single-sided corrugated board manufacturing device, and which does not require a large installation area and has excellent workability. The purpose is to provide

Furthermore, another object of the present invention is to provide mechanical equipment such as steam/hydraulic/pneumatic piping systems and power transmission systems that conventionally required two units;
The purpose is to reduce manufacturing costs by making one electrical equipment such as a control panel sufficient.

Means for Solving the Problems In order to solve the above-mentioned problems and suitably achieve the intended purpose, a single-sided corrugated board manufacturing apparatus according to the present invention is provided.

A first unit rotatably includes a plurality of lower rolls each having a different stage type, and a plurality of upper rolls set to have a stage type capable of correspondingly meshing with the plurality of lower rolls. the first unit is rotatable to selectively index the lower rolls of a required stage type, and the first unit is rotatable to selectively index the lower rolls of the desired stage type, and the first unit is rotatable to selectively index the lower rolls of the specific stage type that has been indexed, to the press roll. The second unit is configured to be able to selectively move toward and away from each other, and the second unit is rotatable to index an upper roll of a required stage type, and the indexed upper roll is transferred to the first unit. It is characterized by being configured to be able to selectively move toward and away from the indexed lower roll.

Embodiment Next, a preferred embodiment of the single-sided corrugated board manufacturing apparatus according to the present invention will be described below with reference to the accompanying drawings.

(Regarding the first embodiment) FIGS. 1 to 3 show a preferred first embodiment of the single-sided corrugated board manufacturing apparatus according to the present invention. In particular, FIG.
The device according to the example is observed with the front frame 10 partially removed. In addition, regarding the corrugated roll support mechanisms that are arranged in eight pairs at both ends of the corrugated roll, such as horizontal guide bars, sliders, and three-pronged arms, which will be described later, only one member located on the near side will be explained. However, a description of the other member located on the opposite side will be omitted.

In the figure, a lever 13 is swingably supported below a pair of frames 10.11 that are spaced apart from each other at a predetermined interval via a pivot 14 provided at one end of the lever 13. A press roll 12 is rotatably disposed at. The other end of the lever 13 is pivotally connected to a piston rod provided in a nip pressure adjusting cylinder 15 via a pin 16, and is connected to a press roll 1 for a lower roll, which will be described later.
2 nip pressure can be adjusted.

The press roll 12 includes a first unit U1 rotatably equipped with a plurality of lower rolls each having a different type of stage.
are arranged so as to be able to selectively index the lower roll of a desired type. That is, horizontal guide bars 17 are horizontally arranged and fixed diagonally above the press roll 12 and on the back side of the frame 10, and a slider 18 is arranged on the horizontal guide bars 17 so as to be able to move back and forth in the horizontal direction. has been done. A lower three-pronged arm 20 having the shape shown in the figure is rotatably supported on the slider 18 via a support shaft 19, and each end of the three arms of the lower three-pronged arm 20 has an A flute, for example. Three lower rolls 21, 22.2 set to different stage types of B flute and E flute
3 are arranged rotatably. Note that each lower roll is selectively indexed to be described later, and the press roll 12
When it reaches above, it is connected to a drive system (not shown) and rotated in the desired direction.

Further, a hydraulic cylinder 24 is connected to the frame 10 with a clevis, and a piston rod 2 that is included in the hydraulic cylinder 24 is connected to the frame 10.
5 is connected to the slider 18 via a connecting piece 26. By applying pressure to the hydraulic cylinder 24, the slider 18 can be moved horizontally along the guide bar 17 in the direction of the arrow with the lower three-pronged arm 20 supporting each lower roll. be. Note that the first
The figure shows the lower three-pronged arm 2 being energized by the hydraulic cylinder 24.
0 is pushed out to the left as much as possible, and the A lower roll 21 provided on the lower three-pronged arm 20 reaches above the press roll 12. In addition, FIG. This shows a state in which the lower three-pronged arm 20 is pushed back as much as possible to the right with respect to the guide bar 17. In the state shown in FIG. 2, the lower three-pronged arm 20 is rotated relative to the slider 18 by a required indexing mechanism, but at this time, the lower rolls 21, 22, 23 provided at the tip of each arm Of course, the lower three-pronged arm 20 is retracted to an appropriate position so as not to come into contact with and interfere with the lower three-pronged arm 12.

Next, a second unit U forming a pair with the first unit U1
Let me explain about 2. In this embodiment, the second unit U2
The configuration of is exactly the same as that of the first unit U,
The only difference is in the location of the frame 10, 11. In other words, a vertical guide bar 27 is vertically arranged and fixed on the back side of the frame 10, and a slider 28 can be moved up and down on this vertical guide bar 27. It is arranged. The slider 28 is connected via a connecting piece 36 to a piston rod 35 of a hydraulic cylinder 34 which is connected to the frame 10 through a clevis, and thereby is given a predetermined stroke of vertical movement. Further, an upper three-pronged arm 29 having the shape shown in the figure is rotatably disposed on the slider 28 via a support shaft 33, and upper rolls 30, 31, and 32 are attached to the tip of each arm of the upper three-pronged arm 29, respectively. It is rotatably supported.

These upper rolls 30, 31, and 32 are all set to different stage types such as the above-mentioned A flute, B flute, and E flute. Lower rolls 21, 22.
23 and can be engaged with each other in a corresponding manner.

Also in this second unit U2, the hydraulic cylinder 3
4, the slider 28 can move up and down with the upper three-pronged arm 29, and its range of movement is limited to the A upper roll that has been indexed in a predetermined manner, as shown in FIG. 30 is between the position where the A lower roll 30 in the first unit U□ comes into engagement with the A lower roll 21 and the position where the A upper roll 30 is raised to the maximum extent as shown in FIG. Note that when the upper three-pronged arm 29 is rotated at the maximum raised position shown in FIG. 2, the upper rolls 30, 31, and 32 provided on each arm are set so as not to contact and interfere with the first unit U1. Of course.

Further, it is assumed that the vertical locus of movement when the second unit U2 is raised and lowered is set in advance at a position that passes through the center of rotation of the press roll 12. Furthermore, both the first unit U1 and the second unit U8 are rotationally indexed by a predetermined center angle by a required drive mechanism.
This rotary indexing mechanism may employ a gear train or other various configurations, and its illustration is omitted. In addition, in FIG. 1 and FIG. 2, the reference numeral 37 is 1, for example, A.
This is a gluing device that glues the corrugated top part of the fluted core paper 41 by the engagement of the upper roll 30 and the A lower roll 21, and this gluing device 37
A gluing roll 38 that transfers the glue stored in the group pan 40 to the top of the step and a gluing roll 39 that removes excess glue.
It is composed of.

Next, the operation of the apparatus of the first embodiment having this configuration will be explained. When operating this single-sided corrugated board machine, it is first necessary to select the type of corrugated board for the corrugated board to be manufactured.For example, when trying to manufacture single-sided corrugated board of A flute standard, the A lower tier in the first unit U1 is selected. It is necessary to select a combination of the roll 21 and the A upper roll 30 in the second unit U2. At this time, as shown in FIG. 2, the corresponding hydraulic cylinders 24
．． 34, the first unit U1 and the second unit U8 are moved backward to a position farthest from the press roll 12.

Next, a rotation indexing mechanism (not shown) is driven to rotate the lower three-pronged arm 20 in the first unit U in a required direction, thereby indexing the A lower roll 21.
This A lower roll 21 is brought to a position closest to the press roll 12.

Further, the upper three-pronged arm 29 in the second unit U2 is also 1
The A upper roll 30 corresponding to the A lower roll 21 is rotated by a predetermined central angle by a rotation indexing mechanism (not shown).
is indexed to bring this A upper roll 3o directly above the press roll 12.

Next, as shown in FIG.
8, it is moved to the left along the horizontal guide bar 17 and stopped at a predetermined position above the press roll 12. Also in the second unit U2, the hydraulic cylinder 34
The slider 28 equipped with an upper three-pronged arm 29
is moved downward, whereby the A upper roll 30 indexed by the upper three-pronged arm 29 is slowly engaged with the A lower roll 21 of the first unit U□. Note that the core paper 41 and liner 43 supplied from the direction shown in the figure are
The upper roll 30 and the A lower roll 21 are completely engaged,
Further, the paper is threaded before the A lower roll 21 and the press roll 12 come into contact with each other. In other words, as shown in FIG.
And it is pulled out to the downstream side via the guide roll 56. Further, the liner 43 is supplied from the opposite direction to the supply side of the core paper 41.
After going around the guide roll 44 and the press roll 12 and joining the core paper 41 which has been pasted as described later,
It is pulled out to the downstream side via the guide roll 56.

If the apparatus according to the embodiment is operated in this state, the core paper 4
1 is formed with a step according to the A flute standard, and the top of this step is glued with a glue roll 38 of a gluer [37]. Further, it is bonded to the liner 43 on the press roll 12.

A single-sided corrugated board 46 is manufactured.

In the previous explanation, a case was explained in which a single-sided corrugated cardboard sheet 46 for an A flute was manufactured. For example, when manufacturing a single-sided corrugated cardboard sheet 46 for an E flute or a B flute, the same procedure as described above is carried out. That is, the first unit U1 and the second unit U3 are retreated to their corresponding rotation indexing positions, the required indexing of the lower roll and upper roll is performed at this position, and then the first unit U1 and the second unit U3 are
By bringing the unit U and the second unit U to the position shown in FIG. 1 in this order, the stacking can be easily changed.

(Regarding the second embodiment) Next, FIGS. 4 and 5 show a second embodiment of the single-sided corrugated board manufacturing apparatus according to the present invention, and in this example, the first unit U4 and the second unit U Two sets of corrugating rolls with different stacking levels are arranged in each of the columns. Further, as in the first embodiment, the press roll 12 and the gluing device 37 are arranged in a predetermined positional relationship below the two opposing frames 10.11.

Above the press roll 12, a first unit u t
is installed. That is, on the back surface of the frame 10 diagonally above and to the right of the press roll 12, an inclined guide bar 47 is arranged in an inclined state, and a slider 48 is supported by this guide bar 47 so as to be freely movable in an oblique direction. The slider 48 is energized by a drive source (not shown) such as a hydraulic cylinder, so that it can move between the operating position shown in FIG. 4 and the lower roll rotation indexing position shown in FIG. It has become.

A pair of brackets 49.50 are pivotally supported on the slider 48 via a support shaft 19, and the brackets 49.50 are rotated about the support shaft 19 by a rotation indexing mechanism (not shown). A lower roll 21 of, for example, an A flute is rotatably disposed on one bracket 49, and a lower roll 23 of, for example, an E flute is rotatably disposed on the other bracket 50. The rotationally indexed A lower roll 21 can be stopped at a position close to the press roll 12 at the position shown in FIG.

Further, a second unit U2 is disposed diagonally above and to the left of the first unit U1. In this second unit U3, a bracket 54 is rotatably disposed via a support shaft 33 at the tip of an arm 51 that is swingably supported via a pivot shaft 57. At both ends of the bracket 54, there are provided an A upper roll 30 that can engage with the A lower roll 21 provided in the first unit U1, and an E upper roll that can engage with the E lower roll 23 that is also provided in the first unit U1. 3
2 are arranged rotatably. frame 10
A hydraulic cylinder 34 is pivotally supported by a pin 53,
A piston rod 58 provided in this cylinder 34 is pivotally attached to the intermediate portion of the arm 51 via a pin 52. Therefore, by energizing the hydraulic cylinder 34, the arm 51 can swing about the pivot 57 within the required center angle range shown in FIGS. 4 and 5.

Also in this second unit U2, as shown in FIG. 5, the arm 51 is pulled up to the highest position.

The bracket 54 can be pivoted by the required rotary indexing mechanism to selectively index either of the two upper rolls 30,32. It goes without saying that the two upper rolls 30 and 32 are designed so as not to come into contact with and interfere with other members during this rotational indexing.

The operation of the apparatus according to the second embodiment constructed in this way will be first explained. Before operating the apparatus, select a desired stack of corrugated rolls. For example, when manufacturing A-flute single-sided corrugated cardboard, as shown in FIG. At this position, the brackets 49 and 50 are rotated around the support shaft 19 by the required rotary indexing mechanism, and the A lower roll 21
The selection index is performed. In the second unit U2 as well, the bracket 54 is rotated at its uppermost position by a required rotation indexing mechanism, and the A upper roll 30 that engages with the A lower roll 21 is rotated and indexed.

Next, the slider 48 in the first unit U1 is again brought to the diagonally downward operating position as shown in FIG.
The indexed A lower roll 21 is positioned above the press roll 12. Further, the hydraulic cylinder 34 in the second unit U2 is reversely biased, the arm 51 is rotated counterclockwise about the pivot shaft 57, and the A upper roll 30, which has already been indexed, is transferred to the A upper roll 30 of the first unit U1. It is brought close to the lower roll 21.

However, there is a slight gap between both rolls, and the core paper 41 is wound around the A upper roll 30 after going around the break heater 55 and passing through a plurality of guide rolls.

The paper is passed through the gap. This core paper 41 is further drawn out downstream via a guide roll 56. Further, the liner 43 is passed around the press roll 12 via a plurality of guide rolls 44, and there, the liner 43 joins the core paper 41.
Next, the arm 51 in the second unit U2 is further slightly rotated counterclockwise, whereby the first unit U1
The A lower roll 21 of the second unit U2 and the A upper roll 3o of the second unit U2 are engaged with each other with the core paper 41 sandwiched therebetween.

When the single-sided corrugated board manufacturing apparatus is operated in this state, A-flute corrugations are formed on the core paper 41 by the two corrugating rolls 21 and 30. The top of this flute A is pasted with glue by the pasting device 37, and is further laminated with a liner 43 to produce a single-sided corrugated board 46. This second
In the embodiment as well, when changing the stacking, the first unit U8 and the second unit U2 are moved back to the position shown in FIG. Perform indexing and set again using the same procedure as before.

Effects of the Invention As described above, the single-sided corrugated board manufacturing apparatus according to the present invention can easily cope with the production of single-sided corrugated cardboard sheets with different stacks. Moreover, compared to the conventional tandem type, which has two devices with the exact same mechanical configuration in series, the device of the present invention basically has a structure in which multiple corrugated rolls are added to one single-sided corrugated board manufacturing device. Therefore, the installation area is sufficient for one unit, making effective use of space. Furthermore, since the power transmission mechanism, steam/hydro-pneumatic piping system, etc. can be shared, manufacturing costs can be kept low.

Furthermore, since the first unit and the second unit are each equipped with a corresponding lower roll and an upper roll, 1, for example, when A membrane sheet is produced by a combination of A lower roll and A upper roll, The upper and lower rolls of other stage types, which wear out due to long-term use and require replacement, can be easily replaced even while the corrugated line is in operation. Therefore, there is an advantage that there is no need to stop the entire corrugated board sheet production line.

Further, in the first embodiment, the second unit is supported by the vertical guide bar and is constantly subjected to a force that tends to move it downward. Therefore, the required nip pressure can be easily obtained between the A upper roll provided in the second unit and the A lower roll provided in the first unit.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a schematic configuration of a first preferred embodiment of the single-sided corrugated board manufacturing apparatus according to the present invention, with the first and second units each reaching the operating position. 2 is a side view similar to the device shown in FIG. 1, with the first and second units retracted to their rotational index positions, and FIG. 3 is a side view of the device shown in FIG. A perspective view showing the schematic configuration of the device shown in FIG. 1, FIGS. 4 and 5
The figures are plan views of an apparatus according to a second embodiment of the present invention, and FIG. 6 is a schematic structural diagram of a single-sided corrugated board manufacturing apparatus according to the prior art. 12... Press roll 21. 22, 23... Lower roll 30. 31, 32... Upper roll U2... First unit U2... Second unit

Claims (1)

[Claims] A plurality of lower rolls (21, 2
2, 23), the first unit (U_1) is rotatably equipped with
and a second unit rotatably equipped with a plurality of upper rolls (30, 31, 32) set to a stage type that can mesh with the plurality of lower rolls (21, 22, 23) in a corresponding manner. U_2), the first unit (U_1) is rotatable in order to selectively index the lower rolls (21, 22, 23) of a required stage type, and The lower roll (for example, 21) is configured to be able to selectively move toward and away from the press roll (12), and the second unit (U_2) is configured to move the upper rolls (30, 31, 32) of the required stage type. is rotatable to index the indexed upper roll (for example, 30),
A single-sided corrugated board manufacturing apparatus characterized in that it is configured to be able to selectively move toward and away from the lower roll (21) indexed in the first unit (U_1).