RU2734212C1 - Apparatus for cutting rolled materials - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: invention relates to apparatus for cutting paper rolls, corrugated cardboard, linoleum rolls and various types of film. Apparatus for cutting rolled materials comprises a cutting assembly, a drive to rotate the reel and a mounting assembly for supporting the reel. Cutting assembly comprises carriage mounted on frame to displace cutting assembly in direction parallel to lengthwise axis of reel on which saw is mounted. Cutting assembly is capable of swinging the saw of the saw in a plane perpendicular to the axis of the reel and is arranged to enable the roll to be cut in the upward direction, said sawing is carried out by upper part of tire at opposite movement of chain and surface of roll so that cutting teeth on tire top part are directed to power saw motor. Mounting assembly is made in the form of front fixed head and rear adjustable head, providing centering of roll, wherein front fixed head is connected to drive to ensure rotation of said roll.

EFFECT: result is accuracy of cutting coils of different materials by measured lengths and increased operational reliability.

7 cl, 4 dwg

Description

The invention relates to an installation for cutting paper rolls, corrugated board, linoleum rolls, various types of film.

Known installations that allow to cut with high precision rolls of various materials: paper, corrugated cardboard, adhesive tape, spunbond, fabric, insulation materials, foam materials, etc.

Well-known is a band saw for cutting toilet paper rolls from Qinyang City Shunfu Paper Making Machinery Co., Ltd. This band saw can be used to cut small diameter rolls.

Known devices for cutting a sheet with rewinding to another shaft. The disadvantages of such devices are the violation of the winding geometry, which leads to the appearance of folds, a complex design with a large number of shafts, high cost, large dimensions, complex maintenance and adjustment.

Known machines for disk roll cutting of large format paper. Their disadvantages are the large dimensions of the machine itself and the disk, high cost and increased noise level during operation.

Known tire cutters of fixed rolls. The disadvantages of the devices are high requirements for the chain, high cost of equipment, inconvenience of using a tire whose length exceeds the diameter of the roll, high labor intensity.

A device for cutting rolled material is known from the prior art (utility model patent RU125120, IPC B26D1 / 14, published 02/27/2013), containing a housing on which an unwinding unit with a brake is fixed, a cutting unit in the form of two shafts, one of which is fixed knife, and on the other there are annular grooves, a tape drive unit and a unit for winding strips of cut material with a drive, as well as two tension units installed before and after the cutting unit, each of which is made in the form of three shafts, while the tape drive unit is installed in front of the winding unit belts and is made in the form of a shaft with annular grooves and a variable diameter decreasing towards the ends of the shaft, and the knife consists of at least two circular knives.

The device is used for slitting roll material, mainly metal foil.

A device for cutting corrugated board is known from the prior art (patent RU2254981, IPC B26D1 / 06, published on June 27, 2005), containing a frame, a cutting mechanism with a drive and a storage device. The device is also equipped with a drum with trunnions and a gear motor, a drum drive, the cutting mechanism is made with a movable knife and a mechanism for fixing the knife blade relative to the drum, the cutting mechanism drive has a differential gearbox, which is kinematically connected by the first receiving shaft through a worm gearbox with an electric motor, the second receiving shaft connected to the drum journal by means of a mechanical transmission, and its output shaft is connected to the movable knife of the cutting mechanism, while another drum journal is mounted on the output shaft of the gear motor.

The disadvantage of this technical solution is the lack of a laser sight, which affects the convenience for an accurate sight.

A machine for cutting cardboard sleeves is known from the prior art in patent RU2673254 (IPC B26D1 / 60, B26D7 / 06, published on 11/23/2018), which includes a cutting unit with a carriage on which a knife is installed, and a supporting element for supporting the cardboard sleeve intended for cross-cutting with a knife. The supporting element allows the sleeve to slide along a predetermined direction parallel to its longitudinal axis and rotate around this axis. The carriage is made with the ability to move the knife in two directions parallel to the longitudinal axis of the sleeve. The supporting element is installed at the location of the cutting unit and is made with a part that can be moved from the knife and back.

The disadvantages of this technical solution are the impossibility of using for sawing dense rolls of large diameter paper, as well as the absence of a laser sight, which affects the accuracy of the product cut.

A device for sawing roll materials from LM Equipment is known in the art. The machine uses a special carbide saw chain to cut cardboard, kraft paper, newsprint and other large diameter paper materials. The device also includes an optional paper dust collection system. The roll is rotated using two lower shafts. A tire that is longer than the bale diameter is being used.

The disadvantages of this technical solution are the high cost of equipment and consumables, the need for an additional pusher device to push the bales from the support shafts into the loader grips due to the possible risk of damage to the lower support rollers by the loader grips, the risk of the bar and chain being pinched when cutting from above if the cut will close and the cut will "settle" in relation to the edges of the bale.

As the closest analogue, a roll cutter with roll rotation on two lower shafts from CFE Nordic AB (https://youtu.be/AWtRSkcWXwE, http://www.cfenordic.com/eng/) was chosen. The device is a tire roll cutter with a rotating roll on two support shafts. The length of the tire slightly exceeds the radius of the roll. Loading and unloading of a roll is carried out by a loader with special grippers for rolls.

The disadvantages of this technical solution are the high cost of equipment and consumables, the risk of damage to the lower support rollers by the loader grips.

The objective of the invention is to create an installation for precise cross-cutting of roll materials of large diameters into rolls of a given length using a high-performance economical electric saw and a laser sight, the use of cheaper and more affordable consumables (tires, chains), and increased operational reliability.

The technical result is the accuracy of cutting rolls of various materials to measured lengths using an electric saw and ensuring a high cutting speed, increasing operational reliability by eliminating the risk of damage to the machine by the loader when loading and unloading the roll, eliminating the risk of the tire being jammed by the roll when cutting.

The technical result is achieved by the fact that the installation for cutting roll materials contains a cutting unit, a drive for ensuring rotation of the roll and an installation unit for supporting the roll, while the cutting unit contains a carriage mounted on a frame with the ability to move the cutting unit in a direction parallel to the longitudinal axis of the roll, on which an electric saw is installed, while the cutting unit has the ability to swing the electric saw bar in the plane perpendicular to the roll axis and is located so that the roll is cut in the direction from bottom to top, while the sawing occurs with the upper part of the bar with the oncoming movement of the chain and the roll surface so that the cutting teeth are on the upper part of the tire is directed to the electric saw motor, and the installation unit is made in the form of a front fixed headstock and an adjustable rear headstock, providing centering of the roll, and the front fixed headstock is connected to the drive to ensure rotation of the said roll.

The main difference of the invention is that the sawing of the rolled material is carried out by the chain saw from the bottom up, which eliminates the possibility of clamping the saw chain and improves the process of removing the cut products using the aspiration unit.

The present invention is further illustrated by the following drawings.

FIG. 1 shows an installation for cutting paper rolls.

Figure 2 shows a section of the tailstock quill.

FIG. 3 shows a diagram of the cutting unit for manual operation.

FIG. 4 shows the installation of the laser pointer and stops.

An installation for cutting paper rolls is shown in FIG. 1.

The installation for cutting paper rolls includes a frame 1 with cylindrical linear guides for moving the carriage 2, a cutting unit 3 and an installation unit including a front fixed headstock 4 and a rear adjustable headstock 5 (Fig. 1).

The stationary headstock 4 is installed on the base of the stationary drive headstock 6, which is rigidly fixed to the frame 1, and is connected to the chain drive 7, with a worm gear motor 8 fixed on the base with an electric motor 9 of the headstock drive (Fig. 1).

An adjustable tailstock 5 is installed on a base 10, which can be moved along the frame 1 by means of a chain drive 11 by a winch with a flywheel 12 through a bypass sprocket 13. In the desired position, the base 10 of the tailstock 5 is fixed with a locking device (Fig. 1). The movement of the centering cone 14 of the tailstock 5 for clamping the roll is carried out by rotating the screw 15 with the handwheel 16. The position of the centering cone 14 is fixed in the working position by the locking screws 17 (Fig. 2).

Cutting paper rolls is carried out using a cutting unit 3, which contains a carriage 18 (Fig. 3), manually moved along cylindrical linear guides 2, located on the frame 1 on bearings, and an electric saw, for example, EPCh-3 "Gigant-900", which mounted on the carriage 18 on the swing axis (Fig. 1). The use of an electric saw is preferred as the absence of emissions improves the environmental performance of the process.

The cutting unit 3 (Fig. 3) includes a bar with a saw chain 19, an outlet for aspiration 20 and a control handle 21, which is connected to the power saw body 22 by a hollow lever 23 using fastening screws 24. The lever 23 is installed in a cylindrical groove on the power saw body 22 after fixing the contact wires passing inside the hollow lever 23 from the control handle 21 in the terminal box 25. Busbars with dimensions from 700 to 1500 mm can be used in accordance with the roll radius based on the roll radius + 50 ... 100 mm.

The cutting unit 3 is attached to the carriage 18 on the swing shaft 26, mounted on housing bearings, the bracket 27 with fastening bolts 28 and the screw securing the cutting unit to the swing shaft 26 (Fig. 3).

The cutting unit 3 can be operated in a portable version with the possibility of using it as a manual electric saw, for which it is dismantled from the device and then the handles supplied with the electric saw are installed.

The paper roll cutter works as follows:

To cut a roll into measured parts, perform the following preparatory operations.

The bolts of fixing 17 of the rod 29 are released and the centering cone 14 of the tailstock 5 is moved to the extreme rear position by rotating the screw 15 with the flywheel 16 (Fig. 3).

Release the attachment of the tailstock 30 (figure 1) and install it at the required distance (roll length + 50… .100 mm for loading the roll and its subsequent clamping by the installation centers) from the headstock 4 for loading the roll with a loader into the installation centers.

The carriage 18 with the cutting unit 3 (Fig. 1) is retracted to the extreme position to the headstock 4 and fixed with a screw, the tire with the chain 19 is lowered down to prevent their deformation when the roll is placed in the centers.

A loader (or a hoist) brings the roll with the holes of the inner sleeve to the installation axis between the centers of the headstock 4,5, while the inner hole of the roll sleeve is aligned with the centers of the cones of the fixed front head 4 and the adjustable tail head 5.

The winch 12 moves the tailstock 5 to the roll until its center touches the inner roll sleeve, through the bypass sprocket 13 passes the branch of the chain of the drive for moving the tailstock 5 (from the winch drive sprocket through the bypass sprocket to the base of the tailstock). The other branch of the chain covers the drive sprocket (not shown) of the winch 12 and is attached to the base 10 of the tailstock 5 from the opposite side. Thus, by rotating the bypass sprocket 13 by the winch 12, the branches of the chain move, which in turn move the tailstock 5 in the required direction. The chain tension is adjusted by adjusting screws located on the base of the tailstock 5. After the center contacts the inner roll sleeve, the tailstock 5 is fixed on the frame with fixing strips using a ratchet wrench with screws 30 (Fig. 1).

By rotating the screw with the flywheel 16 (Fig. 1) of the movable center of the tailstock 5, the roll is clamped in the centers of the installation. The clamping force should be sufficient to ensure the retention of the roll in the centers of the installation and its rotation by the driven headstock 4. Next, the rod 29 is fixed with bolts 17 (Fig. 3).

Then the loader grips are released and removed from the working area of the installation.

Using a tape measure or a measuring device, the length of the cut part of the roll is marked. When the equipment is connected to the power supply, the opposite direction of rotation of the bale and the saw chain, indicated in FIG. 4. Sawing occurs with the upper part of the bar when the surface of the bale moves at the moment of sawing in the direction from the electric saw motor and when the chain moves in the opposite direction to the electric saw motor. In this case, the chain is installed on the bar so that the cutting teeth on the upper part of the bar are directed towards the electric saw motor.

A portable control panel is installed in a place convenient for the operator.

The cut of the roll into several parts is carried out according to the marking from the side of the movable clamping head 5. To do this, move the carriage 18 of the cutting unit 3 with the tire 19 along the guides 2 until the marking aligns with the beam of the laser pointer 31 (Fig. 4) located on the carriage 18, indicating the position tires 19 relative to the roll. The roll is marked manually, the laser pointer 31 serves to align the tire 19 with the mark for sawing to ensure a more accurate cut by aligning the operator with the laser pointer with the markings on the roll. The roll rotates against the movement of the teeth of the cutting unit chain, which increases the cutting speed.

The carriage 18 is fixed relative to the frame 1 with a screw. One of the cut limiters of the cutting unit 32 or 33 is installed on a fixed diameter of the used roll sleeves in the working (upper) position (Fig. 4). Cutting stops ensure that the running chain does not come into contact with the cone of the drive headstock when the cut is completed on a bale less than 60 mm wide from the end of the bale on the side of the drive headstock. They consist of swivel bases fixed on an axle on the carriage of the cutting unit, with adjusting screws and locking nuts. The length of the screws is designed to provide this function when cutting bales with cores inside the bales. When turning the cutting unit at the end of the cut, the body of the cutting unit abuts against the adjusting screw, preventing further movement of the bar.

Further, they include an exhaust dust collecting installation and a frequency converter of an electric saw. The knob of rotation of the potentiometer for adjusting the rotation speed of the roll is moved to the zero position and the drive for rotation of the roll is turned on. By gradually turning the potentiometer knob clockwise, set the required roll rotation speed. Turn on the rotation of the saw chain and, turning the handle of the cutting unit with the tire, cut the roll from the bottom until the cardboard sleeve of the roll is cut.

Before finishing cutting the bale, install a stand between the bed and the bottom of the bale, reduce the rotation speed of the bale in order to avoid its sharp fall, destruction of the tire and the power saw body.

After the end of the cut, the electric saw bar 19 is lowered and the carriage 18 with the cutting unit 3 is retracted to its original position. A loader grab and clamp the cut workpiece. The bolts of fixing 17 of the rod 29 of the tailstock 5 are released and the centering cone 14 is removed. The fixation of the base 10 of the tailstock 5 is released with screws and it is retracted by the winch 12 to the required distance to dismantle the cut part of the roll. The cut off part of the roll is removed by the loader into the storage area. If it is necessary to cut the rest of the coil, the above cutting operations are repeated.

When sawing, the operator adjusts the bale speed and cutting unit feed depending on the cutting process, bar position and bale movement.

The main advantages of the claimed invention: increased cutting speed, improved accuracy of roll marking, adjustable roll rotation speed, high economic and environmental performance, lower noise level, high quality and cutting geometry that do not require additional processing, compact installation, no risk of clamping the saw chain, increased operational reliability by eliminating the risk of damage to the machine by the loader when loading and unloading the roll, eliminating the risk of the tire being pinched by the roll when cutting.

Claims (7)

1. Installation for cutting roll materials, comprising a cutting unit, a drive for ensuring rotation of the roll and an installation unit for supporting the roll, characterized in that the cutting unit contains a carriage mounted on a frame with the ability to move the cutting unit in a direction parallel to the longitudinal axis of the roll on which is equipped with an electric saw, while the cutting unit has the ability to swing the electric saw bar in a plane perpendicular to the roll axis, and is positioned to ensure the cut of the roll in the direction from bottom to top, while sawing occurs with the upper part of the bar with the oncoming movement of the chain and the roll surface so that the cutting the teeth on the upper part of the tire are directed to the electric saw motor, and the installation unit is made in the form of a fixed front headstock and an adjustable rear headstock, providing centering of the roll, and the fixed headstock is connected to the drive to ensure the rotation of the said roll. 2. Installation according to claim 1, characterized in that the cutting unit is removable. 3. Installation according to claim 1, characterized in that it contains guides for moving the adjustable tailstock along the frame. 4. Installation according to claim 1, characterized in that it contains a laser pointer located on the carriage of the cutting unit, for the operator to align the laser pointer with the markings made on the roll. 5. Installation according to claim 1, characterized in that the fixed headstock is connected by means of a chain transmission with a worm gear motor of the drive to ensure rotation of the roll against the movement of the teeth of the cutting unit chain. 6. Installation according to claim 1, characterized in that the adjustable tailstock has a screw clamp for the roll. 7. Installation according to claim 1, characterized in that the adjustable tailstock is connected to a winch for moving along the frame depending on the length of the roll.

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