DE1937309A1 - Cutting device and method - Google Patents

Description

Dr. Ing. E. BERKENFELD ■ D i ρ I.-1 η g. H. B E R K E N F E LD, patent attorneys, Cologne n Attachment file number

om June 9, 1969 Sch // Nome d. Note: Mesta Machine Company

Cutting device and method.

The invention relates to double rotating knives, and more particularly a cutting device suitable for cutting steel, which has a thickness that allows the use of the usual rotating Excludes knife. The invention also provides a garbage disposal device which can be used with the cutting device according to FIG Invention is used.

Although the rotary knife is of general utility in severing or cutting a relatively thick sheet of steel the invention will be described in connection with the trimming of the side edges in a conventional rolling mill. In this application, the new rotating knife can be arranged in such a way that that it trims one or both side edges of a moving plate, if desired, while the rolling mill is in operation. An example arrangement of the rotating cutting device can with a device for continuous Elimination of the side waste of the panel, when the same is passed through the rolling mill. It is of paramount importance that the operating force requirements of the new cutting device are considerably reduced.

A number of rotary cutters have been described which are used for trimming the side edges of a Steel band or the like were used when doing the same through a rolling mill passes through it. The known rotating knives were only for strip material and relatively thin plates useful. Because of their operating force requirements, the usual rotating knife a plate with a maximum thickness

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from about 1ö, 75 mm. Effect upon approaching this thickness the usual rotating knives put a significant speed limit on the rolling mill. Pur thicker panels are a must cascade-like knife can be used, which further limits the speed of the rolling mill.

In each type of known shearing device, the cut old edges of the strip are not kept within acceptable tolerances, especially at higher rolling mill operating speeds. In certain applications it was it is necessary to trim the side edges of the tape again or to use separate and subsequent cutting operations.

The cutting device according to the invention is more compact than one common guillotine-like knife currently used to shear off a Plate of the thickness required by the new rotating Cutting device can be handled. The new cutting device can cut or trim thicker panels with greater speed and less power consumption perform than was previously possible with any known form of cutting device. Despite their greater speed the cutting device according to the invention can adhere to more precise cutting tolerances. Certain embodiments of the Cutting devices are provided with a new device for removing the resulting waste. Still other arrangements the cutting device trim both side edges of a relatively thick steel plate at the same time and precisely Passage through the rolling mill.

A number of previously proposed rotary knives are known, which can handle tapes and relatively thin plates. In American patents j5 O8O 783, For example, 2 309 045, 2 205 738, 5 191 474, and 3 257 887 will be described the use of cutting heads having a single pair of opposing rotating knives. Some of these devices are for simultaneous trimming formed on both side edges of a strip or a thin plate as it passes through the rolling mill, such as the pre-M 9Ο / 2 -2-

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direction according to the American patent 3 O8O 783. Fig. this patent also shows the use of a single pair of correspondingly arranged replacement rotating blades for the rapid exchange. None of the devices of these patents however, it is useful for cutting a relatively thick panel or for trimming the side edges thereof. Equally important is the lack of precise tolerance regulation, which is required by today's manufacturing processes.

American patents 2,702,597, 2,814,345, 3060778 and 2,318,173 show different types of rotating knives, most of which are used for chopping up steel scrap. U.S. Patent 2,318,173 uses rotating ones Cleaver for cutting thin strips or chips from selected ones Length. However, none of the devices according to these patents are relatively thick for chopping the waste Plates or the like suitable for the purpose of waste disposal.

American patents 2,679,900, 1,619,684, 2,307,452 and 2,706,524 show for the most part the arrangement of multiple circular knives and spacers on a single shaft for use in multiple slitting or cutting for combined processes of schultzens and side trimming. The devices according to these patents are also only for cutting, slitting or trimming strip material or relatively thin plates.

These disadvantages of the known devices are overcome by the formation of a new rotary cutting device and a method that involves the use of a first cutting device to cut relatively deeply into the sheet material provides, which is followed by a second cutting device for shearing or separating the sheet material. Using the step-by-step method and device enables the cutting of much thicker sheet material than has previously been possible. Simultaneously the cutting process is faster and much more precise than was possible with any kind of conventional knife. Through the deep M 90/2 -3-

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Cutting into the sheet material becomes the hardened surface. or outer layer of the material pierced to the subsequent To facilitate the shearing or separating process. The device and the method therefore allow faster and much more accurate Cutting operations than was previously possible. In addition, the device and the method in connection with high-performance slab rolling ζwerke are used and are to adapt the Speeds capable as the development of technology increases further increases in the speeds of the rolling mills. The method and apparatus are to be used with equal ease Trimming one or both of the side edges of the sheet material suitable when passing through the rolling mill,

These desirable outcomes are achieved through training a A vision cutting device comprising: a first cutting device for cutting the material to be cut, a second cutting device for shearing off the material, a device, which the second cutting device behind the first Arranges cutting device in alignment with the incision of the material made by the first cutting device, and means which sequentially add the material to the first and feeds to the second cutter.

A similar device is provided in which the material consists of a steel plate with a hardened outer layer and in which, the first cutter is arranged so that the plate is cut so that the outer layer is pierced.

A similar device is provided in which each first and second cutting device with a pair of adjacent, rotatably arranged, circular knife is provided.

A similar device is provided in which a roller equalizer and chopping means are disposed generally behind the first and second cutting means for To remove chips or waste thereof.

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A similar device is provided in which the cutting device arranged for trimming the lateral edges of the strip or sheet material, one means being the first and disposing the second cutter adjacent the one lateral edge while additional first and second cutters are arranged adjacent to the other side edge.

A cutting process is also provided which includes the steps cutting the material to be cut on an intended one Including cutting line and the subsequent shearing of the material along this cutting line.

A similar procedure is also provided in which the Material has a hardened outer layer, the method the additional step of cutting the material to at least the depth of the skin prior to the shearing step includes.

A cutting device is described below which includes: first and second pairs of knives lying one behind the other, each pair of knives for the passage of the material to be cut is disposed therebetween, means which the first pair of knives "pushes against the material sandwiched between them to incise it, a device which the second pair locates the knife in alignment with the incision made by the first pair of knives and means which presses the second pair of knives against each other to separate the material at the incision when the material is between the Knives is arranged.

In the preceding discussion, various objectives, features and advantages of the invention. These and other objects, features, and advantages of the invention are discussed along with construction Details thereof in the following description of certain preferred embodiments of the invention and more preferred Method of carrying out the same explained in more detail with reference to the drawings in which:

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Pig. 1 is a plan view of an embodiment of the cutting device according to the invention, which for trimming both side edges of a steel plate or the like is arranged. The figure also shows a chip and debris removing device according to FIG Invention,

FIG. 2 is a front view of the device according to FIG. 1,

Fig. 3 i ⁿ a larger scale a cross section along the line III-III of Fig. 2,

4 shows a partially sectioned on a larger scale Partial view of the device according to FIG. 3,

Fig. 5 is a partial cross-section along the line V-V of Fig. 3,

6 shows a partial cross-section on a larger scale according to the line VI-VI of Fig. 3,

FIG. 7, on a larger scale, a partial longitudinal section along the line VII-VII in FIG. 3,

8 shows a partial cross-section on a larger scale along the line VIII-VIII in FIG. 3.

The following is an example embodiment of the device described in more detail according to the invention used in connection with a plate mill to simultaneously both trimming the side edges of the plate passing through it and removing the resulting waste. From the The following description it can be seen that the device according to the invention can also be used for other applications for precise and Rapid cutting of relatively thick material of various types can be used, with a considerable reduction the operating force requirements compared to known tendon id devices. It is also wildly recognizable that certain Features of the invention without the corresponding use of other Merk-M 90/2 -6-

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times can be used advantageously

According to FIGS. 1-3, the cutting device according to the invention consists of a rotating sawing device, generally designated 20, and a waste disposal device. 22. The cutting device 20 and the waste disposal device 22 are arranged for the processing of continuously moving material which, in the embodiment shown, is supported on the passage line 24. The through line may be that of a (not shown); usual rolling mill. The maximum plate width is indicated by the solid lines. Positions of the housing 26a, 26b determined, while the minimum width is determined by the position of the stationary housing 26a and the position of the other housing 26b indicated by the broken line 20.

The material to be cut is supported by a number of pods 30 which are arranged on a stand '32 which is between the housings 2oa, 26b is arranged. The positions of the movable housing 26b and movable stand j> 2 adjusted by a lead screw 34 having a first pitch section 36 and a second pitch section 38. In the embodiment shown, the incline sections a slope ratio of 1: 2. on so that the stand 32 over half the setting distance of the movable housing 26b is moved. Therefore, when the lead screw 34 by the Drive motor 40 is rotated, the stator 32 remains in the center between the housings 26a, 26b.

The cutter 20 is substantially identical on either side of the centerline 42 except for the new and useful adjustment feature described above. Both side edges of the material (supported on pass line 24) are therefore trimmed simultaneously and in the same manner, as will be described below. Of course, the new cutting device but can also be used for trimming a single lateral edge of the supported on the pass line 24 material. The waste disposal device 22 is also equipped with stationary and movable Ge-M 90/2 _ ₇ _

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houses 44, 46, between which a movable support 48 is arranged for the material. The support 48 and the movable housing 46 can be adjusted by means of a lead screw 50 which is formed in a manner similar to that of the lead screw 34.

As FIG. 1 shows, the rotary cutter includes 20 a pair of cutting heads 52, 54 adjacent to each lateral Edge of the plate material are arranged. Each cutting head 52, 54 includes a pair of substantially perpendicular, side by side horizontal rotating knife 56, 58 or 60, 62. Each pair of knives 56, 58 or 60, 62 is shifted laterally for the shearing action in the usual way. Other embodiments of the Adjacent knives can be used in accordance with the principles of the invention for particular applications require.

Each cutting head 52 or 54 (on a selected side of the material to be cut) is with a drive motor 64 or provided, each of which by the output shaft 72 or 74 with a reduction gear 68 and a pinion set 70 are coupled is. The output shafts 72, 74 are connected by connecting shafts 76, 78 individually connected to similar shafts 72, 74 that form a part the cutter on the other side of the material. Complementary to the one behind the other described above Arrangement (transverse to the Ducchganglinie 24) is each pair of the adjacent shafts 72, 74 in the lateral direction (parallel to the Passage line 24) connected to one another by the reduction gear 68 and the pinion set 70, which are the usual training exhibit. In this arrangement, the circumferential speeds of the eight rotating knives 56 to 62 are relative to each other and to the material moving along the passage line 24 is precisely synchronized.

In the illustrated embodiment, the front cutting heads 52 are arranged to hold the plate or similar material incision is made at least to a depth sufficient to pierce the hardened outer layer or layers of the plate. To encourage this, point the front rotating-M 90/2 _8-.

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the knife 56, 58 a slightly smaller diameter than that rear or separating rotating blades 60, 62, as in FIG. 3 shows. In addition, the lower rotating single knife 58 is offset somewhat forward relative to the upper rotating incising knife 56. This arrangement makes intrusion easier rotating knives 56, 58 in the hardened outer layers of the plate or other material.

As already mentioned, the shear blades 60, 62 have a larger one Diameter than the cutting blades 56, 58. The shearing blades 60, 62 are similar but larger Dimensions offset like the front rotating incising knives 56, 58. The greater offset is due to the larger diameter the rotating knives 60, 62 and their relatively deeper penetration into the plate to be trimmed required.

It has been found that the progressive or incremental cutting process, which comprises the steps of incision and later shearing or severing, significantly reduces the force requirements of the cutting operation. With the rotating knives, thicker sheet material can be cut off than was previously possible. The previous incision or the determination of the intended cutting line by the front cutting heads 52 therefore results in a faster one and more precisely separating the material by the rear cutting heads 54. Each of the cutting heads 52, 54 is in the horizontal direction adjustable to allow adjustment of the rear shear blades 60, 62 relative to the incisions made through the front incision knives 56, 58 were produced. Such an adjustment can be effected by a worm with a worm wheel by a corresponding MotoAnit reduction gear are driven.

In order to adapt to different thicknesses of the plate or another material, a device is provided for changing it the knife opening or the perpendicular distance between each pair of rotating knives 56, 58 or 60 ". .62. Like the characters 3 and 4 show such a vertical adjustment device at least one eccentric and preferably one pair of Ex-M 90/2 -9.

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centers 8θ, 82 or 8.4, 86 on each cutting head 52 or 54 are arranged. Each pair of eccentrics is angularly displaced by the drive motor 88 or 92 and the reduction gear 90 or 94. The output shaft of each reduction gear 90 or 94 is with the associated pair of eccentrics 84, 86 or 80, 82 coupled, for example, by drive pinions which are in engagement with driven gears which are on the eccentrics are arranged.

After they have been completely severed by the shear blades 60, 62 the scraps pass through a roller leveler 96 which, in the embodiment shown, is on each side of the plate or of the material and aligned with the adjacent rotating knives 56,58 and 60,62. As Fig. J5 shows, the waste separated by the separating knives 60, 62 is straightened by each roller equalizer 96. The staggered arrangement the cutter 60, 62 g bends the waste, as indicated by the broken line 98. The roller equalizer 96, which is inclined for this purpose, leads the waste from the passage line 24 down and a little outward. As shown in Figures 7 and 8, the two pairs of opposing equalizer rollers 100 and 102 relative to the direction of movement of the waste inclined to aid in guiding and straightening the waste. With the inclined arrangement of the opposite The concave acts on rollers 100, 102 of the equalizer 96 Umrifl of the rolling surfaces of the rollers 100, 102 together.

In order to accommodate various thicknesses of material, the leveling rollers are arranged to move back and forth against the waste passage line 104, as shown in FIGS. 5 and 5. For this purpose, the lower rollers of the equalizer 96 are arranged on an adjustable table 106. The normal adjustment thereof relative to the pass line 104 is controlled by the screw spindle 108 which is rotated by the motor and reduction gear unit 110.

In order to adapt to the normal setting of the table 106 is A curved roller table 112 is provided for the entry of the waste 90/2 -10-

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see. The table 112 extends generally from the knife opening the rotating shear blades 60, 62 up to the entry end of the roller equalizer 96. For the purpose of adapting to different Thicknesses of the material and corresponding settings of the roller table 106 in the transverse direction is the roller table 112 at 114 pivotally attached.

At the lower or exit end of the roller equalizer 96 is a Chopping head 116 arranged, which breaks the waste into pieces of advantageously Chopped up length for easy handling later. Pure the the latter purpose is next to the other side of the chopping head II6 a chute 118 is arranged.

In the illustrated embodiment, the chopping head 116 includes a pair of rotating chopping devices 120, 122, each of which has a number of chopping knives 124 extending on the circumferential surface are arranged obliquely. The devices 120, 122 are generally cylindrical in outline to accommodate the oblique chopping knives 124 to be included.

The devices 120, 122 are rotated by the drive motor 126 which is coupled to the reduction gear 128 Knife can be changed by, for example, the lower knife 122 is moved towards the upper knife 120 or away from the same. The knife opening is changed by the device shown in FIG. 6. The output shaft of the reduction gear 12ö is coupled to the pinion shaft I30, which is arranged generally below the lower knife 122. The pinion 152 on the shaft 1 ^ 0 is in engagement with the bell wheel 1j54, which is in one piece with the eccentric 1j56. The eccentric 156 also serves as a bearing housing for the lower cutter shaft 138, which is mounted in the same by means of corresponding bearings 140. The bell wheel 1J4 of the lower eccentric 1j56 is in engagement with a similar bell wheel 144 of an upper eccentric 146, which also serves as a bearing housing for the upper knife whale 148, which is mounted in the same in a similar manner. M 90/2 -I ₁ -

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Like Pig. 6 shows, the eccentrics 1 ^ 6, 146 are arranged so that There is a minimal opening 150 between the knives 120, 122. When the eccentrics 1 ^ 6, 146 by rotating the pinion shaft 1j50 is given half a turn, reaches the knife opening 150 their maximum size (not shown).

As Fig. 6 shows, port sets 152, 154 of the knife shafts I38, 148 coupled with a gear reduction, which in turn the output shaft of the reduction gear 128 is connected (Fig. 3).

The new cutting device described above enables rapid and accurate trimming or other severing of Plate material. The cutter incorporates new facilities for chopping up and removing debris from the cutting process is produced. There will be new facilities for straightening, directing and chopping up the waste into pieces of suitable length described. The cutting device can accommodate thicker plate material or the like than previously with the known devices was possible. Moreover, the cutting device according to the invention is for the handling of plates or similar materials different thickness easily adjustable.

Obwoai the device according to the invention mainly in connection with trimming the side edges of sheet material, it is more general for applications Usefulness in which rapid and accurate cutting is desired. For example, the cutting device that as a double-head side cutting device in a high-performance hot or cold strip rolling mill is arranged, advantageous for rapid and precise trimming of the lateral edges of the strip or the plate.

The invention is not limited to the illustrated and described exemplary embodiment, which has various modifications can experience without departing from the scope of the invention.

Claims

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Claims (1)

Dr. Ing. E. BERKENFELD · Dipl.-Ing. H. BERKENFELD, patent attorneys, Cologne Attachment file number on the submission of June 9, 1969 Sch // Name d. Note: Mesta Machine Company Claims Cutting device, characterized by one behind the other egend arranged first and second pairs of adjacent one another Knives (56,58 and 60,62), each pair of the knives being arranged with the material to be cut between them passes through a device which holds the first pair of knives (56,58) against the material disposed therebetween presses to incise the same by means of which the second pair of knives (6O, 62) aligned with the Incision made by the first pair of knives and by means made by the second pair of Presses knives against each other to separate the material at the incision when the material is placed between the knives. 2. Cutting device according to claim 1, characterized by a first cutting device (52) for cutting into the to be cut Material, by a second cutting device (54) for shearing the material, by a device which the second Cutter located behind the first cutter in alignment with the incision of the material passed through the first cutting device was generated, and by a device which successively the material of the first and the second cutting device supplies » 3. Cutting device according to claim 2, characterized in that each first and second cutting device contains a pair of juxtaposed knives (56 * 58 and 60, 62) and that a device is provided which changes the opening between each pair of knives to cut material different thickness to accommodate ~. M 90/2 -13- .803888 / 1087 '4. Cutting device according to claim 2, characterized ^ eA * "" ^{e 'c? "E} * ■ net, y that the material consists of a steel plate having a hardened outer layer and that the first cutting means (52) is arranged so that the same cuts into the plate to penetrate the outer layer » 5. Cutting device according to claim 2, characterized in that a device is provided which has a first and aligning a second cutting device adjustably relative to one another in order to coincide with the alignment of the second cutting device to ensure the incision made by the first cutter. 6. Cutting device according to claim 2, characterized in that each first and second cutting device is a pair next to one another contains horizontal, rotatably arranged, circular knife. 7 · Cutting device according to claim 3 * characterized in that that the device for changing the opening has at least one eccentric (80, 82 and 84, 86) for each first and second cutting device that includes a knife on each cutter the associated eccentric is arranged and that a device for angular displacement of the eccentric is provided to the to change openings. 8. Cutting device according to claim 2, characterized in that that a roller equalizer (96) and a chopping head (116) in the generally located behind the first and second cutters are to remove chips or waste from the same. 9. Cutting device according to claim 8, characterized in that the roller compensator (9.6) at least one pair at an angle arranged rollers (100,102) for straightening and steering the Contains waste. 10. Cutting device according to claim 8, characterized in that the chopping head (116) contains a pair of chopping knives (120, 122) lying next to one another and that a device for setting M 90/2 -n- 9 09886/1087 fs the opening between the knives is provided. 11. Cutting device according to claim 10, characterized in that that the device for adjusting the opening is a shaft (148 and 138) for at least one of the knives (120 and 122), which are in an eccentric tubular part (146 and I36) is stored and that a device (1 ^ 0) for angular displacement of the eccentric tubular parts is provided. 12. Cutting device according to claim 2, characterized in that the cutting device for trimming the lateral Edges of the tape or sheet material is disposed and includes means which the first and second cutting means adjacent to the one lateral edge while additional first and second cutting devices are arranged adjacent to the other lateral edge. 13. Cutting device according to claim 12, characterized in that that drive devices are provided for each first and second cutting device and that one device is the output shafts the drive means of the first and second cutting means are coupled to one another for synchronous engagement to ensure each first and second cutter with the tape or the plate. 14. Cutting device according to claim 2, characterized in that each first and second cutting device at least one contains rotating knife and that the diameter of the knife (56,58) of the first cutting device is smaller than that of the Knife (60,62) of the second cutting device. 15. Cutting device according to claim 2, characterized in that each first and second cutting device is a pair next to one another lying rotating knife and that one knife of each pair of knives relative to the other knife of each pair of knives as well as relative to the direction of movement of the material between them is offset. M 9O / 2 -15- 9 0 9 BR _{6/1 0 8 7 ßAD} Ύ9 .16. Schneidvorriohtung naoh claim 15 # characterized ^ net that the offset of the knives of the second pair of knives is greater 1st as the displacement of the knives of the first pair of knives. 17. Cutting process «characterized by the steps of Kinsohnens the material to be cut on an intended th cutting line and the later soaking of the material lengthways this cutting line. 18 * The method according to claim 17 *, wherein the material is a hardened outer layer «characterized by the additional Step of cutting the material at least up to Depth of the outside layer before the step of removing the material. «90/2 -16- 909886/1087