JPS6257480B2 - - Google Patents

Description

Detailed Description of the Invention [Industrial Application Field] The present invention is directed to cutting an original strip material of a predetermined width that moves in the longitudinal direction and a plurality of strip materials that are cut into smaller widths by longitudinally cutting the original strip material. related to a device for

[Conventional technology]

Typical corrugated paperboard manufacturing equipment forms a strip of paperboard that is wider than the desired corrugated paperboard as the final product for the production of cardboard stock. Depending on the width of the cardboard material to be produced in each case, the initially one-piece corrugated paperboard strip is divided into a plurality of parallel strips by means of a longitudinal cutting device. This device is followed by a cutting device for transversely cutting (cutting) the strip into different lengths. In this way, cardboard blanks of different dimensions can be produced from one type of corrugated paperboard. Known cutting devices include rotary cutting machines with bladed rolls, guillotine cutting machines, water jet cutting machines,
This is a laser cutting machine, etc.

Known corrugated paperboard production machines generally have two cutting stations, so that two strips can be cut transversely independently of one another. These cutting machines are arranged one above the other in the same vertical cross section with respect to the direction of movement of the strip material, or one after the other at different heights. The device is equipped with a cutting machine in the form of a roll with two rotating blades on the top and bottom.
For example, the Federal Republic of Germany Patent Application Publication no.
It is known from specification No. 2055313.

It has already been proposed to install three cutting machines in front and behind each other, with the first cutting machine being preceded by the second and third cutting machines.
Since it is mounted higher than the cutting machine, three strips of different widths resulting from longitudinal cutting can be obtained independently of each other. A feature of the known cutting devices in machines for producing corrugated paperboard is that, even though the strip always has a significantly smaller width, the individual cutting machines have a cutting length that is designed for the entire width of the original strip. It is that you are. Since the individual cutting machines are initially designed so that they can be used for cutting full-width strips of material, cutting machines of known design are not utilized optimally.

[Problem that the invention seeks to solve]

The object of the invention is to avoid these drawbacks and to significantly improve the utilization of a machine for processing longitudinally moving strips of material.

[Means for solving problems]

In order to solve this problem, according to the present invention, a first cutting machine that cuts the original strip material in a width corresponding to a predetermined width of the original strip material, and this first cutting machine are installed at different vertical positions. the first cutting machine and the plurality of additional cutting machines each having a width smaller than the predetermined width of the original strip material and extending over a width approximately equal to the predetermined width of the original strip material; A cutting device for a strip-like material is constituted by a cutting device and a frame that supports the cutting device at positions vertically apart from each other.

〔Effect of the invention〕

The advantages achieved by the present invention are that while maintaining the same cutting possibilities offered by three individual devices, each designed for the entire width of the strip material,
The equipment costs of the second and third cutting machines are significantly reduced due to the significant reduction in width. Furthermore, the maintenance costs of this cutting device are correspondingly reduced. And weight savings also occur. because,
Due to the small support length in the shortened cutting device, there is less risk of deflection and the load-bearing cross-section, for example the axial cross-section, can therefore be designed smaller.
A saving is likewise made in the parts and outer frame structure necessary for supporting a device with reduced width.

Furthermore, since two cutting devices of reduced width can be placed side by side in a vertical cross section, the longitudinal length of the entire device can be significantly reduced.

〔Example〕

As an embodiment of the present invention, a corrugated paperboard cutting device will be described below.

In the illustrated embodiment, the first cutting machine A for the full width of the original strip material, and the second and third cutting machines B and C for narrow width cutting machines are provided in independent frame structures, so that Each frame structure can be used interchangeably as a module within the corrugated paperboard manufacturing equipment.

The frame structure of the cutting machine A comprises essentially two parallel side plates 1 and a substrate 2 attached to these side plates. A bearing device 3 that supports a pair of bladed rolls 4 is provided inside the side plate 1 . The bladed roll can be of conventional construction. Regarding the diameter of the bladed roll, bladed rolls of different diameters can be used.

To drive the bladed rolls 4 of the cutting machine A, a common drive motor 5 is provided outside the frame structure and is connected to the bladed rolls 4 via a speed reduction device.

The frame structure for cutting machines B and C includes two outer side plates 6 and an intermediate side plate 7, and these side plates 6, 7
are connected by suitable cross beams on the upper and lower sides to form a rigid frame structure. The bearing devices 3 for the bladed rolls 8 and 9 of the cutting machines B and C are constructed in the same way as in the cutting machine A, and are mounted on the inside of the outer side plate 6 and on both sides of the intermediate side plate 7.

In order to drive the cutting machines B and C, drive motors 10 and 11 and speed reducers are provided on both outer sides of the frame structure, respectively.

As can be seen from the side view of FIG. 2, in this embodiment, the cutting machine A and the small width cutting machines B and C are
With respect to the direction of movement of the strip material, they are provided one above the other in the same vertical cross section. When different types of strip material are fed into this device in the longitudinal direction, the lower strip material generally moves from the feed table in approximately the same horizontal plane as the bladed roll 4 of the cutting machine A. On the other hand, since the upper strip material is fed from the same supply table to the upper bladed roll B, it bends upward from the initial direction of movement at one point.

If the cutting machines B and C are arranged behind the cutting machine A with respect to the direction of movement of the strip material, the cutting machines B and C can be installed at a lower position than the illustrated position. Therefore, in this way, cutting machine A and cutting machines B and C
In this arrangement, the strips of material fed to the cutting machines B, C bend upwardly to a lesser extent than in the illustrated embodiment.

In a conventional corrugated paperboard production machine having an initial width of 2500 mm, the width of the second cutter is approximately 1250 mm and the width of the third cutter is approximately 833 mm.

The device of the invention with cutters of different widths is suitable for cutting of any width. This is suitable not only for dividing a raw material strip into three or more strips, but also for dividing a raw material strip into two strips of the same or different widths.

[Brief explanation of the drawing]

FIG. 1 is a front view of a cutting device according to the present invention, which is equipped with three cutting machines each having a roll with a rotary blade, and FIG. 2 is a side view of the cutting device with its drive device removed. A...first cutting machine, B...second cutting machine, C...third cutting machine.

Claims (1)

[Scope of Claims] 1. In an apparatus for cutting an original strip-shaped material of a predetermined width that moves in the longitudinal direction and a plurality of strip-shaped materials that are cut into smaller widths by longitudinal cutting of this original strip-shaped material, A first cutting machine that cuts the original strip material with a corresponding width; and a first cutting machine that is installed at a different vertical position from the first cutting machine and has a width smaller than a predetermined width of the original strip material and that cuts the original strip material. A frame that supports the first cutting machine and the plurality of additional cutting machines at positions vertically apart from each other. This is a cutting device for strip-shaped material that moves in the vertical direction. 2 A plurality of additional cutting machines cut a strip material having a width half the width of the original strip material and a second cutting machine cutting a strip material having a width one third of the width of the original strip material. 2. The apparatus according to claim 1, further comprising a third cutting machine. 3. The device according to claim 1 or 2, wherein the cutting machine is a pair of bladed rolls. 4. Device according to claim 2, characterized in that the second and third cutting machines are arranged side by side at the same height in the same vertical cross section. 5. The device according to claim 2, characterized in that the first cutting machine is provided below the second and third cutting machines. 6. Device according to claim 2, characterized in that the first cutting machine is arranged above the second and third cutting machines. 7. Device according to claim 5 or 6, characterized in that three cutting machines are arranged in the same vertical cross section. 8 The first cutting machine and the second and third cutting machines,
7. Device according to claim 5, characterized in that the devices are arranged offset from each other in the direction of movement of the strip material.