RU67490U1 - TAPE CUTTING LINE - Google Patents

Abstract

Usage: the production of tape blanks for wire and shaped profiles at the enterprises of the metallurgical, engineering and construction complexes. Objective: The utility model is based on the technical task of increasing the usable yield, simplifying the design, increasing productivity and durability, expanding the technological capabilities of the line by manufacturing blanks for wire drawing with a width of less than 4 mm, while increasing the accuracy of the blanks in terms of width and compactness of riots. The essence of the utility model: a slitting line, contains an unwinder 1, a butt welder 4, an introduction multi-roller device 6, disk shears 7, on the drive shafts 21 of which the cutting disks 23 and spacer rings 24 are mounted, and between the shafts a chipper 16 with a replaceable carbide plate 36, winding drums 8 with articulated link mechanism 10 and stacker 9. Introductory multi-roller device 6 contains four horizontal 11, 12 two vertical 13, 14 rollers. In this case, horizontal 11, 12 rollers are mounted in pairs on the bump 16 and the housing 15, and vertical 13, 14 rollers are mounted on the housing 15 on both sides of the first pair of horizontal 11 rollers during cutting. First by

while cutting, a vertical roller 14 is rigidly fastened to the housing 15, and the second 13 is mounted on a pivot arm 17 mounted by means of the axis 19 on the slider 18. The slider 18 is connected to the housing 15 to move in the direction of the axes of the shafts 21 of the disk shears 7 and is connected with the pivoting lever 17 with the help of a spring 20, turning the lever 17 towards the bump 16. On the horizontal sections of the fingers 29, rigidly connected with the bump 16, the pullers 28 are mounted with the possibility of free axial movement. The bump 16 and the housing 15 with the support 22 are equipped vans means of movement in the direction of the axes of the shafts 21 and the height. Winding reels 8 are mounted in height in two levels, in pairs, on both sides of the cutting axis, symmetrically last and kinematically connected with the stacker 9. The linkage mechanism 10 is made in the form of two articulated parallelograms 46, one of the horizontal arms 47 of which is pivotally connected to carriage 51 of stacker 9. Each of the reels 38 has horizontal rollers 48 mounted on horizontal levers 47 of articulated parallelograms 46. Positive effect: increased yield, simplified design, increased productivity and durability, expanding the technological capabilities of the line by manufacturing blanks for wire drawing with a width of less than 4 mm, while increasing the accuracy of blanks in width and compactness of riots. 20 ill.

Description

The utility model relates to equipment for cutting and can be used at enterprises of metallurgical, engineering and construction complexes.

A known unit for the longitudinal dissolution of the rolled sheet (slitting line), containing the unwinder roll, straightening machine, centering rollers, pulling rollers, disc scissors and winding device. (Anisimov V.I. et al. Extension of the range of rolled metal products - a reserve of savings / Anisimov V.I., Antipanov V.G., Shvartsman Z.M. - Chelyabinsk: Yuzh. - Ural. Publishing House, 1980 - C .30-31.)

The longitudinal cutting of the rolled sheet (tape) is combined with the trimming of the side edges that enter the edge-cutting shears for grinding.

The disadvantages of the technical solution are the low yield (the mass of the crushed edges is 1 ... 4% of the mass of the roll) and the inability to obtain tape blanks with a width of less than 4 mm. (GOST 503-81. Cold-rolled tape from low-carbon steel. Specifications.)

A known line for the longitudinal cutting of a tape containing an unwinder, a winder, feed rolls and circular shears, in which mounted composite disk cutting disks and pullers in the form of rings. The rings are installed between the composite disk disks and are supported on two pairs of support rollers mounted above the upper and

lower shafts with the possibility of adjustable movement in the direction perpendicular to the plane of the axes of the shafts. (RF patent No. 2192940, IPC. 7 В23D 19/06. Application. 04/23/2001; Publish. 11/20/2002. Bull. No. 32.)

This technical solution provides longitudinal cutting of a tape with a thickness of up to 0.15 ... 0.18 mm into ribbons (tape blanks) with a minimum width of 1.7 ... 1.8 mm. When cutting the initial workpiece with a thickness of more than 1 mm, it is impossible to obtain tape blanks with a width of less than 4 mm due to the low stiffness of the composite cutting disc, which significantly limits the possibilities of the technical solution and does not allow using it to obtain blanks for wire. (RF patent No. 2147259, IPC. 7 В21В 1/16, В21С 1/00. Publ. 10.04.2000. Bull. No. 10.) In addition, the execution of pullers complicates the design of scissors and increases the labor costs for their operation.

Closest to the composition of the equipment of the present invention is a slitting line containing an uncoiler, disk scissors and winding drums mounted on the drive frame for winding ribbon blanks and trimmed edge ribbons into rolls (riots). (Kogos A.M. Mechanical equipment of drawing and sheet rolling workshops. 3-ed. - Moscow: Metallurgy, 1980. P.299.)

Winding reels for winding edge ribbons are offset relative to the longitudinal axes of the latter, which leads to high rib and longitudinal curvature and, as a rule, does not allow the use of edge ribbons, for example, as a packing tape or further cutting into blanks to produce wire.

It should be noted that the known slitting technology on known equipment involves the use of tapes with trimmed and uncut edges as the initial blank. Moreover, in both cases, the edge ribbons arrive either on the edge-cutting scissors, or on the scrap winder, or are wound together with suitable

tapes on a winding drum, and in all cases, are mainly scrapped.

This is explained by the following.

The maximum deviations along the width of the initial rolled sheet with cut edges, for example, according to GOST 14918-80, depending on the accuracy, are +3 ... 10 mm, and with not cut edges +20 mm. Hence, the maximum deviations along the width of the edge ribbons will be commensurate with the maximum deviations along the width of the original tape, since the distance between the centering rollers during the longitudinal cutting process is constant. Given this circumstance, it is very problematic to find the use of edging ribbons, bypassing the steelmaking redistribution.

The utility model is based on the technical task of increasing the yield by halving the waste, simplifying the design, increasing productivity and durability, expanding the technological capabilities of the line by manufacturing blanks for wire drawing less than 4 mm wide, while improving the accuracy of blanks in width and compactness riots.

The problem is solved in that the line of longitudinal cutting of the tape containing the unwinder, winding reels and disc shears mounted on the drive frame according to the invention is equipped with an input multi-roller device with four horizontal and two vertical rollers and a chipper, while the horizontal rollers are mounted in planes parallel to the axis plane of shear shafts in pairs on the bump and the casing, and vertical rollers are mounted on the casing on both sides of the first horizontal cutting pair GOVERNMENTAL rollers, wherein the first cutting along the vertical roller rigidly secured to the housing, the second - is mounted on a pivoting arm, mounted via an axle on the slide, the latter is connected to the housing movably in the direction of the axes of the shafts disk

scissors and is connected to the rotary lever by means of a spring that rotates the lever towards the chipper, the chipper is mounted between the shafts of the disk shears on the bed with the possibility of adjustable vertical and horizontal movements and is equipped with means of movement in the form of screw-nut gears, in addition, installed between the cutting disks, pullers made in the form of plates are mounted on fingers rigidly connected to the chipper with the possibility of free axial movement, while the fingers are located on both sides of the plate the axes of the axes of the shafts of the disk shears, and the axes of the fingers are parallel to the axes of the shafts, the casing is mounted in a support with the possibility of vertical movement, the support is mounted on the scissors drive frame with the ability to move in the direction of the axes of the scissor shafts, and the horizontal rollers are mounted with the possibility of changing the center distance.

The chipper is equipped with a replaceable carbide plate.

A butt welder is installed between the unwinder and the disk shears.

Kinematically connected winding drums are mounted in height in two levels, in pairs, on both sides of the cutting axis, symmetrically last and equipped with an articulated lever mechanism in the form of two articulated parallelograms and a stacker that is kinematically connected with the winding drums, while on horizontal levers guide rollers are mounted at each of the drums of articulated parallelograms, and one of the horizontal levers of the mechanism is pivotally connected to the stacker.

Equipping the tape slitting line with a chipper and an introduction multi-roller device with four horizontal and two vertical rollers, the horizontal rollers of which are mounted in planes parallel to the plane of the axes of the shaft of the disk shears in pairs on the chipper and the casing, and the vertical rollers are mounted on the casing by

both sides of the first along the cutting pair of horizontal rollers, the first along the cutting vertical roller rigidly fastened to the housing, the second mounted on a swing arm mounted via an axis on the slider and the connection of the latter with the swing arm using a spring that pivots the lever toward the bump allows you to increase yield by reducing waste by half. This is due to the fact that throughout the entire cutting process, the tape is reliably pressed by the spring loaded roller to the chipper, while due to the distortion of the rollers, the tape contacts the chipper with the chipper near the cutting site, and this, in turn, allows the use of edge waste from longitudinal aggregates cutting a rolled sheet without first editing. Thus, the proposed utility model ensures that, when cutting the tape, one of the edge blanks (at the chipper) is suitable for further use, for example, as an initial blank during wire drawing.

Placing the chipper between the shafts of the disk shears on the bed with the possibility of adjustable vertical and horizontal movements and equipping it with means of movement in the form of screw-nut gears can reduce the number of technological equipment, increase the accuracy of the edge blank (at the chipper) and expand the technological capabilities of the disk shears.

Reducing the number of tooling is achieved by using one chipper for all sizes of cutting discs.

Improving the accuracy of the edge billet (at the chipper) is achieved by increasing the rigidity of the chipper (two-support fastening of the chipper on the bed) and increasing the accuracy of its installation.

The expansion of technological capabilities of disc scissors is achieved by precise installation of the chipper relative to the nearest

cutting disc, which allows to obtain an edge blank of a width of up to 1 mm.

Installing a slider on the housing with the ability to move in the direction of the axes of the shafts of the disk shears allows you to simplify the design of the disk shears by reducing the size of the spring.

The execution of the strippers in the form of plates mounted between the cutting disks on the fingers rigidly connected with the chipper with the possibility of free axial movement and the installation of the fingers on both sides of the plane of the axes of the shafts of the disk shears parallel to the axes of the shafts, eliminates the breakage of the tape blanks with a width of less than 4 mm when they are removed from cutting discs, simplify the design of scissors and reduce labor costs for their adjustment.

Mounting the casing in a support with the possibility of vertical movement, the support on the scissors drive frame with the ability to move in the direction of the axes of the scissors shafts allows you to ensure the specified accuracy of cutting the edge billet (at the chipper) regardless of the curvature of the original workpiece, to simplify the design of the scissors by using one body support) of the chipper for all sizes of the original tape and reduce the time spent on setting up the scissors.

The installation of horizontal rollers with the ability to change the center-to-center distance provides the required accuracy for adjusting the center-to-center distance of the rollers when the thickness and curvature of the initial workpiece change.

The supply of the chipper with a replaceable carbide plate allows to increase the accuracy of the edge billet (at the chipper) and the durability of the chipper.

The installation of a butt welder between the unwinder and disc scissors can significantly reduce the time spent on auxiliary operations when cutting the initial workpiece in the form of waste from the longitudinal cutting units of the rolled sheet and therefore

increase the productivity of the slitting line. This is due to the fact that the average mass of tape billets obtained from waste from slitting aggregates does not exceed 17 kg, and the mass of riots of tape billets, taking into account the assortment of the initial billet, can reach 80 kg. Hence, the implementation of butt welding to cutting provides a reduction of at least four operations for filling the original billet into circular shears, tape billets into winding drums and removing riots from the drums.

The installation of kinematically connected winding drums in height in two levels, in pairs, on both sides of the cutting axis and symmetrically to it, simplifies the design of the slitting line, improves the quality of winding of tape blanks and increases the yield.

Simplification of the design is achieved by the fact that such a design of the winding drums makes it possible to kinematically couple the drums with fairly simple means (chain transmission), while the area occupied by the drums remains unchanged when the second level is installed.

The increase in yield is due to the fact that when refueling the tape blanks, in drums located symmetrically relative to the cutting axis, there is no need to perform operations to trim the front ends when refueling them, for example, to the extreme drums.

Improving the quality of winding tape blanks is ensured by a pair of drums that are symmetrical with respect to the cutting axis, since the installation of more than two drums on each, for example, a friction clutch, as shown by experimental testing of a longitudinal cutting line, leads to a sharp deterioration in the quality of the winding.

The equipment of winding drums with a stacker and a pivot-lever mechanism in the form of two articulated parallelograms, one of the horizontal levers of which is pivotally connected to the stacker, and the stacker is kinematically connected to the drive of the winding drums,

allows you to improve the quality of the winding of tape blanks and the compactness of the riots with the simplest design of the styling tools.

Thus, the use of the proposed utility model allows to increase the yield by halving the waste, simplify the design, reduce the labor costs of operating the line, increase the durability and expand the technological capabilities of the line by manufacturing blanks for wire drawing less than 4 mm wide and used as the original waste stocks from slitting units while increasing the accuracy of blanks in width and compactness of riots.

The proposed utility model is illustrated by drawings, where Fig. 1 shows a slitting line, Fig. 2 is a view A in Fig. 1, Fig. 3 is a view B in Fig. 2, in Fig. 4 is a section BB in figure 3, figure 5 is a section GG in figure 2, figure 6 is a view of D in figure 1, figure 7 is a section EE in figure 1, figure 8 is a view W in Fig.6, in Fig.9 - view And in Fig.8, in Fig.10 - section KK in Fig.6, in Fig.11 - section L-L in Fig.6, Fig.12 - an external element M in Fig. 7, in Fig. 13 is a view H in Fig. 1, in Fig. 14 is a view O in Fig. 13, in Fig. 15 is a section P-P in Fig. 14, in Fig. 16 is a section PP in FIG. 13, in FIG. 17 is a section CC in FIG. 16, in FIG. 18 is an external element T in Fig.13, Fig.19 is a view of F in Fig.18, Fig.20 shows the position of the front end of the original workpiece before the task in the cutting discs.

The line for longitudinal cutting of the tape contains (Fig. 1) an unwinder 1 of a roll 2 with an initial tape 3, a butt welding machine 4, an input multi-roller device 6 mounted on a frame 5, disk scissors 7, a shear drive in the form of a gear stand with an open gear console gear and engine (not shown in Fig.), winding drums 8, stacker 9 and articulated link mechanism 10.

Introductory multi-roller device 6 contains (see figure 2-6) four horizontal 11, 12 and two vertical 13, 14 rollers. Horizontal

the rollers 11, 12 are mounted in pairs with the possibility of changing the center-to-center distance on the housing 15 and the bump 16, and the vertical rollers 13, 14 are placed on the housing 15 on both sides of the horizontal rollers 11. The first vertical roller 14 is rigidly fastened to the housing 15 and the second - 13 is mounted on a rotary lever 17, which is mounted on the slider 18 by means of the axis 19. The slider 18 is connected to the rotary lever 17 by a spring 20, which rotates the lever 17 towards the bump 16 and is coupled to the housing 15 with the possibility of movement in the direction of the axes of the shaft 21 circular shears 7. The housing 15 is secured to a support 22 vertically movably, and support 22 - to the frame 5 is movable in the direction of the axes of shafts 21, circular shears 7.

Disc scissors contain (see Fig.6-12) mounted on two parallel shafts 21 cutting disks 23, spacer rings 24, gears 25 kinematic coupling with the drive (not shown in Fig.), Frame 26, radial adjustment device of the upper shaft 27 , pullers 28, and the previously mentioned horizontal rollers 12 and chipper 16.

The chipper 16 with fingers 29 is rigidly attached to the brackets 30, which are mounted using the clips 31 on the frame 26. The brackets 30 with the clips 31 and the clips 31 with the frame 26 are interlocked by means of the joints groove-protrusion 32, 33 and are equipped with means of adjustable movement, respectively along the axis 34 and height 35. On the cylindrical sections of the fingers 29 with the possibility of free axial movement, pullers 28 are installed, and on the plane of the chipper 16 from the side of the cutting discs 23, a replaceable carbide plate 36.

The winding drums 8 comprise (see FIGS. 13-19) drums 38 mounted on shafts 37, flanges 39, friction clutches 40, nuts 41, chain 42 and transmission belt 43 kinematically connecting the upper shaft 37 and the stacker 9 with the drive 44, respectively . To the upper movable frame 45

the articulated lever mechanism 10 is made in the form of two articulated parallelograms 46, on the horizontal arms 47 of which the guide rollers 48 are fixed, while the lower horizontal arm 47 is articulated by an axis 49 and an eye 50 with the carriage 51 of the screw stacker 9. The stacker 9 is equipped with interchangeable gears 52.

The guide rollers 48 contain pairwise mounted, with the ability to change the center distance in the housings 53 horizontal 54 and vertical 55 rollers.

Setting up and working on a slitting line is as follows.

Disc scissors 7 are mounted on the frame 5. Gears 25 are engaged with cantilever gears of the gear stand (not shown in the drawing). A holder 31 and an arm 30 are mounted on the bed 26 by means of the notches-protrusions 32, 33. The fender 16 with the rollers 12 and the replaceable carbide insert 36 are attached to the arm 30 with the fingers 29. Depending on the process to be implemented, the corresponding cutting discs are placed on the shafts 21 23 and the distance rings 24, and on the cylindrical sections of the fingers 29, with the possibility of free axial movement - pullers 28. The radial adjustment device 27 sets the specified overlap of the cutting disks 23, and using displacement being adjusted 34, 35 required in relation to the proximal cutting disk 23, the position of deflector 16 with a replaceable hard metal plate 36 and the rollers 12.

A housing 15 is mounted on the support 22, with horizontal 11 and vertical 14 rollers mounted on it with a slider 18. On the slider 18, by means of the axis 19 and the spring 20, a pivoting lever 17 with a vertical roller 13 is placed. By moving the slider 18 in the direction of the axes of the shafts 21, by moving the housing 15 vertically and horizontally

the movement of the support 22 is pre-setting input multi-roller device 6.

On the shafts 37, with the help of nuts 41, drums 38 and flanges 39 are mounted. Using the chain 42 and belt 43 gears, the upper shaft 37 and the stacker 9 are kinematically connected with the drive 44, respectively. Vertical movement of the upper movable frame 45 and horizontal movement in the direction of the cutting axis stacker 9 carry chain tension 42 and belt 43 gears. The lower horizontal lever 47 of the articulated link mechanism 10, made in the form of two articulated parallelograms 46, is connected to the carriage 51 of the stacker 9 using the axis 49 and the eye 50. On the horizontal arms 47 of the articulated link mechanism 10, guide rollers 48 are installed with horizontal 54 and vertical 55 rollers. Depending on the width of the tape blanks on the stacker 9, the corresponding interchangeable gears 52 and the required center distance of the vertical rollers 55 are installed.

A roll 2 with an initial tape 3 is installed on the unwinder 1. The front end of the original tape 3 is wound from the unwinder 1, passed between the rollers 11-14 of the multi-roller input device 6 and brought to the cutting discs 23 of the disk scissors 7. By moving the bearings 22 and the slider 18 in the direction of the axes the shafts 21 achieve touching the front end of the original tape 3 with a carbide plate 36 bonded to the chipper 16 in close proximity to the cutting center (see Fig. 20). The horizontal rollers 11, 12 are brought into contact with the original tape 3. In the filling mode, the front end of the original tape 3 is passed through the cutting discs 23. The drive of the disk shears 7 is stopped and the width of the tape billet in contact with the replaceable carbide plate 36 is measured. If necessary, adjust the axial position of the chipper 16 with a replaceable carbide plate 36 and supports 22. Then in the filling mode

turn on the drive of the disk shears 7 and pass the front ends of the tape blanks between the rollers 54, 55 and fix them in the reels 38. The drives of the disk shears 7 and the winding reels 8 are turned on, and the roll 2 is cut with the original tape 3 in the operating mode. After the rear end of the original tape 3 has come off the unwinder 1, all drives are turned off. The following roll is installed on the unwinder 1 and the front and rear ends of the tape rolls are butt-welded.

According to the proposed utility model, the following studies of equipment for longitudinal cutting of the tape were performed. Waste from slitting aggregates, the so-called edge trim and substandard strip, was used as the initial blank. The thickness of the initial billet was 0.8 ... 2.0 mm. The width of the edge trim was 6 ... 70 mm. In this case, deviations along the width of the edge trim varied over a wide range from 1 mm to 20 mm, and substandard strip - 0.3 ... 1.0 mm. The maximum number of simultaneously obtained tape blanks did not exceed eight. When cutting a wide initial billet, the resulting trim was wound onto a winding device separately from the winding drums and subsequently subjected to further processing on the line. The cutting speed of the initial billet was 0.5 m / s. In total, 30 tons of edging and 12 tons of substandard strip were processed during the testing process. The utilization rate of equipment was 92%, which exceeds the same indicator for known technical solutions by 8 ... 12%. The width of the tape blanks varied from 1.0 mm (in contact with a replaceable carbide plate) to 2 ... 3.5 mm. The deviations of the tape blanks in width, including those in contact with a replaceable carbide plate, did not exceed 0.14 mm. Breaks in the tape blanks in the area of pullers during cutting were not observed. The mass of the riots of the tape blanks was mainly 80 kg. Riots were compact with high quality windings. Suitable for cutting substandard strip

reached 100%, and when cutting the edge trim - 80%, the latter is almost two times higher than the yield when using known centering rollers for processing the edge trim. Subsequently, the obtained tape blanks were processed into wire. In the process of wire production, there were no complaints about the quality of the tape blanks.

It should be noted that increasing the utilization rate of equipment is achieved by reducing labor costs for setting up scissors, performing butt welding of the ends of the rolls before cutting the initial workpiece and increasing the durability of the chipper.

Thus, as a result of experimental testing, it can be argued that the use of the proposed utility model in comparison with the closest analogue allows to increase the yield by halving the waste, simplify the design, reduce labor costs for operating the line, increase durability and expand the technological capabilities of the line by manufacturing blanks for drawing wire with a width of less than 4 mm and use as an initial blank of waste from slitting aggregates while simultaneously increasing the accuracy of tape blanks in width and compactness of rolls.

It is advisable to use the proposed slitting line at the enterprises of the metallurgical, machine-building and construction complexes for the production of wire and high-precision shaped sections.

Claims (4)

1. A line for longitudinal cutting of a tape containing an uncoiler, winding reels and disc scissors mounted on a drive frame, characterized in that it is equipped with an input multi-roller device with four horizontal and two vertical rollers and a chipper, while horizontal rollers are mounted in planes parallel to the plane of the axes of the disk shafts scissors in pairs on the chipper and the casing, and vertical rollers are mounted on the casing on both sides of the first pair of horizontal rollers along the cutting path, the first along the p The vertical roller is rigidly fixed to the body, the second is mounted on a swing arm mounted by means of an axis on the slide, the latter is connected to the housing with the possibility of movement in the direction of the axes of the disk shears and is connected to the swing arm using a spring that pivots the lever towards the bump, the chipper is mounted between the shafts of the disk shears on the bed with the possibility of adjustable vertical and horizontal movements and is equipped with means of movement in the form of screw-nut gears, except for about, the strippers installed between the cutting disks, made in the form of plates, are mounted on the fingers rigidly connected to the chipper with the possibility of free axial movement, while the fingers are located on both sides of the plane of the axes of the shaft of the disk shears, and the axis of the fingers are parallel to the axes of the shafts, the body is mounted in support with the possibility of vertical movement, the support is mounted on a shear drive frame with the ability to move in the direction of the axes of the scissors shafts, and the horizontal rollers are mounted with the possibility of changing the inter center distance. 2. The line according to claim 1, characterized in that the chipper is equipped with a replaceable carbide plate. 3. A line according to one of claims 1 and 2, characterized in that a butt welding machine is installed between the unwinder and the disk shears. 4. A line according to one of claims 1 to 3, characterized in that the winding reels kinematically connected to each other are mounted in height in two levels, in pairs, on both sides of the cutting axis, symmetrically last and equipped with a pivot-lever mechanism in the form of two hinge parallelograms and stacker, which is kinematically connected with winding drums, while on the horizontal levers of articulated parallelograms, guide rollers are mounted on each of the drums, and one of the horizontal levers of the mechanism is pivotally connected to the stacker com.