Adjusting structure and adjusting method for strip steel shear line of crank rocker flying shear

Abstract

The invention relates to an adjusting structure and an adjusting method for a strip steel shear line of a crank rocker flying shear, the structure comprises a first adjusting structure and a second adjusting structure, the first adjusting structure is arranged below a lower pinch roll and is used for adjusting the roll surface height of the lower pinch roll; the second adjusting structure is arranged below the outlet carrier roller and is used for adjusting the roller surface height of the outlet carrier roller; and the first adjusting structure and the second adjusting structure are matched to adjust the roller surface heights of the lower pinch roller and the outlet carrier roller, so that the actual strip steel walking line coincides with the lower shear blade shearing line, and the actual strip steel walking line and the lower shear blade shearing line are arranged at set elevation angles with the horizontal line in the strip steel walking direction. The roller surface elevation of the lower pinch roller and the outlet carrier roller can be flexibly and steplessly adjusted, flexible and accurate adjustment of the actual steel walking line of the strip steel is achieved, the shear line of the lower shear blade coincides with the actual steel walking line of the strip steel, an ideal shear mode is achieved, the strip steel is prevented from being scratched by the shear blade, and the product quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of cold-rolled thin plates, and in particular to an adjustment structure and an adjustment method for a shearing line of a crank rocker flying shear strip steel. Background Art

[0002] At present, there are many new production lines for high-performance cold-rolled thin plate units (such as galvanizing, continuous annealing, and acid flattening), and product performance is constantly improving, extending from general building materials to high-quality products such as automobiles, home appliance plates, zinc-aluminum-magnesium, and silicon steel.

[0003] When producing the above-mentioned high-quality cold-rolled thin plates, for the purpose of strip performance testing and removing strip head and tail shape defects, it is necessary to use flying shears to perform multiple shearing of the strip during coil operation, including coil splitting, sampling, and scrap shearing. While placing extremely high demands on shearing quality, higher demands are placed on the durability of the flying shear blades, that is, the blade replacement cycle must meet a certain period to reduce the time for blade replacement, avoid unit shutdown, and reduce production costs. This requires the flying shear blade to bear only the shear load as much as possible when shearing the strip, and not bear other additional loads, so as to maximize the service life of the blade while ensuring product quality.

[0004] In the above-mentioned high-performance cold-rolled sheet production unit, since the shearing process speed is generally controlled at 30 to 60 m / min, the crank rocker flying shear is suitable for the above-mentioned unit. Determined by the structure, during the shearing process of the crank flying shear, the upper shear blade makes a planar motion of an elliptical trajectory, and cooperates with the reciprocating swing trajectory of the lower shear blade to shear the strip. During the shearing process, the upper surface of the lower shear blade serves as the supporting surface of the strip, and the lower surface of the upper shear blade serves as the shearing surface to press down and shear. In order to ensure that the shearing quality meets the requirements and consider the service life of the shear blade, the strip shearing process is required to be smooth and impact-free. In theory, it is ideal for the shearing edge of the lower shear blade to be tangent to the lower surface of the strip.

[0005] The existing crank rocker shear area layout is shown in the attached Figure 4 :The upper shear blade 1 and the lower shear blade 2 of the crank rocker flying shear are respectively mounted on the upper tool holder 3 and the lower tool holder 4. During the shearing process, the lower tool holder 4 drives the lower shear blade 2 to swing back and forth, forming a lower shear blade swing trajectory line 5, and the upper tool holder 3 drives the upper shear blade 1 to make a similar elliptical plane motion, and cooperates with the reciprocating swing trajectory of the lower shear blade 2 to complete the shearing of the strip. The lower pinch roller 81 at the entrance of the flying shear is mounted on the fixed bearing seat 82 of the lower pinch roller, and the upper pinch roller 71 is mounted on the bearing seat 74 of the upper pinch roller swing arm 73, and the upper pinch roller swing arm 73 is driven by the hydraulic cylinder 75 to rotate around the hinge shaft 72. A fixed outlet roller 9 is arranged at the outlet of the flying shear, and a belt threading guide plate 11 is arranged before the outlet roller 9.

[0006] When shearing is required, the upper pinch roller 71 swings into position and clamps the strip with the lower pinch roller 81 to keep the strip stable. During the shearing process, the upper surface of the lower shear blade 2 serves as the supporting surface of the strip, and the lower surface of the upper shear blade 1 serves as the shearing surface to press down and shear. Figure 4 As shown, the common tangent line between the lower pinch roller 81 and the upper roller surface of the exit roller 9 is the actual steel strip route 10.

[0007] The shortcomings of the existing crank rocker shear area layout are mainly reflected in

[0008] 1. When installing the flying shear equipment, since the position of the lower shear blade is not a fixed highest point and the strip steel has a drooping deflection in the flying shear area (the theoretical calculation value has a large deviation), its installation accuracy cannot meet the requirement that the swing trajectory of the shearing edge of the lower shear blade is tangent to the lower surface of the strip steel. That is, the shearing line 6 of the lower shear blade cannot coincide with the actual steel line 10 of the strip steel, and is either higher or lower.

[0009] 2. As attached Figure 5 As shown, the shear line 6 of the lower shear blade is higher than the actual steel line 10 of the strip, that is, the shear line 6 of the lower shear blade is at an elevation angle α with the actual steel line 10 of the strip in the forward direction of the strip. After the shearing indication is started, the lower shear blade 2 is easy to scratch the lower surface of the strip during the swinging process. After the shearing is completed, the belt head continues to thread the belt. Because the shear blade is at a higher position, the lower belt head is easy to hit the shear blade, which seriously affects the life of the shear blade. In the case of a large height difference, the belt head may get stuck in the gap of the flying shear equipment, causing the unit to shut down.

[0010] 3. As attached Figure 6 As shown, the shear line 6 of the lower shear blade is lower than the actual steel line 10 of the strip, that is, the shear line 6 of the lower shear blade is in a depression angle β with the actual steel line 10 of the strip in the forward direction of the strip. After the shearing instruction is started, the upper shear blade will first press the strip downward for a distance before it can contact and shear with the lower shear blade. When the flying shear is shearing the strip, the strip is running continuously with a large tension before the first knife shearing, which will cause the following defects:

[0011] (1) Scratches will appear on the upper surface of the sampling strip before cutting, affecting the quality of the sample.

[0012] (2) The shear blades on the flying shear will be subjected to greater additional loads and impacts, which will increase wear.

[0013] (3) When producing extremely thin plates below 0.3 mm, the upper shear blade may easily cause scratches and breakage during the pressing process, resulting in production accidents.

[0014] (4) Since the actual slitting line is at a depressed angle, the slitting head is easily stuck under the guide plate table under the action of inertia, resulting in serious consequences such as production line shutdown.

[0015] The fundamental reason for the above problems is that the layout of the existing flying shear area is unreasonable, resulting in the lower shear blade shearing line and the actual strip steel line not completely overlapping. The key to solving the above problems is how to improve the design so that the two lines can be accurately, conveniently and flexibly adjusted.

[0016] Therefore, the inventor, relying on many years of experience and practice in related industries, proposes an adjustment structure and adjustment method for a crank rocker flying shear strip steel shearing line to overcome the defects of the prior art. Summary of the invention

[0017] The object of the present invention is to provide an adjustment structure and adjustment method for the shearing line of a crank rocker flying shear strip. The first adjustment structure and the second adjustment structure of the present invention can flexibly and steplessly adjust the roller surface elevations of the lower pinch roller and the exit roller, thereby realizing flexible and precise adjustment of the actual strip steel line formed by the common tangent line of the upper roller surface of the lower pinch roller and the exit roller. The shearing line of the lower shear blade coincides with the actual strip steel line, thereby achieving an ideal shearing mode, avoiding the strip steel from being scratched by the shear blade, and improving product quality.

[0018] The objective of the present invention is achieved in this way. A crank rocker flying shear strip shearing line adjustment structure comprises a first adjustment structure and a second adjustment structure, wherein the first adjustment structure is arranged below the lower pinch roller and is used to adjust the roller surface height of the lower pinch roller; the first adjustment structure comprises a first power actuator and a first mechanical adjustment part; the second adjustment structure is arranged below the exit roller and is used to adjust the roller surface height of the exit roller; the second adjustment structure comprises a second power actuator and a second mechanical adjustment part; the first adjustment structure and the second adjustment structure cooperate to adjust the roller surface height of the lower pinch roller and the exit roller so that the actual strip steel line coincides with the lower shear blade shearing line and the actual strip steel line and the lower shear blade shearing line are arranged at a set elevation angle with the horizontal line in the strip steel walking direction.

[0019] In a preferred embodiment of the present invention, the first mechanical adjustment part includes a first wedge block structure that can be raised and lowered to adjust the height, and the top end support of the first wedge block structure is provided with a lower pinch roller; the first power actuator can push and pull the first wedge block structure to adjust the roller surface height of the lower pinch roller.

[0020] In a preferred embodiment of the present invention, the first wedge block structure comprises a first upper inclined wedge and a first lower inclined wedge which are arranged in a vertically contacting manner, and the top surface of the first lower inclined wedge and the bottom surface of the first upper inclined wedge are arranged in an inclined manner; the upper support of the first upper inclined wedge is connected to the lower pinch roller bearing seat;

[0021] One side of the first lower inclined wedge is connected to the first power actuator, and a first position detection unit is arranged on the first power actuator. The first power actuator pushes and pulls the first lower inclined wedge to drive the lower pinch roller above the first upper inclined wedge to rise and fall so as to adjust the roller surface height of the lower pinch roller. The first position detection unit monitors the horizontal movement distance of the first lower inclined wedge in real time.

[0022] In a preferred embodiment of the present invention, the first mechanical adjustment part includes a first inclined wedge guide rail frame, the first inclined wedge guide rail frame includes a first base, and a first guide vertical plate is arranged on the first base at one lateral side of the first wedge block structure; a second inclined wedge guide rail frame is arranged on the first base at the other lateral side of the first wedge block structure, the second inclined wedge guide rail frame includes a second base, and a swing mechanism bracket of an upper pinch roller is supported and arranged above the second base, and a second guide vertical plate parallel to and spaced from the first guide vertical plate is arranged on one side of the second base, and the first lower inclined wedge, the first upper inclined wedge and the lower pinch roller bearing seat are raised and lowered between the first guide vertical plate and the second guide vertical plate.

[0023] In a preferred embodiment of the present invention, a first self-lubricating slide plate is provided on a side of the first guide vertical plate close to the first wedge block structure; a second self-lubricating slide plate is provided on a side of the second guide vertical plate close to the first wedge block structure; and the first lower inclined wedge, the first upper inclined wedge and the lateral side surfaces of the lower pinch roller bearing seat are slidably fitted with the first self-lubricating slide plate and the second self-lubricating slide plate respectively.

[0024] In a preferred embodiment of the present invention, guide blocks are respectively arranged on both sides of the first upper inclined wedge in the length direction on the second base, a fifth self-lubricating slide is arranged on the side of the guide block close to the first upper inclined wedge, and the two side surfaces of the first upper inclined wedge in the length direction are slidably fitted with the two fifth self-lubricating slides.

[0025] In a preferred embodiment of the present invention, a third self-lubricating slide is arranged on the bottom surface of the first lower inclined wedge, a first wear-resistant plate is arranged on the first base, and the third self-lubricating slide is slidably fitted with the first wear-resistant plate; a fourth self-lubricating slide is arranged on the top surface of the first lower inclined wedge; a second wear-resistant plate is arranged on the bottom surface of the first upper inclined wedge, and the fourth self-lubricating slide is slidably fitted with the second wear-resistant plate.

[0026] In a preferred embodiment of the present invention, a first groove is arranged on the first base, the first wear-resistant plate is arranged in the first groove, and the top surface of the first wear-resistant plate protrudes out of the first groove.

[0027] In a preferred embodiment of the present invention, the first power actuator includes a first hydraulic cylinder, the cylinder body of the first hydraulic cylinder is fixedly connected to the first cylinder bracket, and the cylinder rod of the first hydraulic cylinder is connected to the first lower inclined wedge; a first displacement sensor is arranged on the first hydraulic cylinder, and the first displacement sensor is used to detect the horizontal movement distance of the cylinder rod of the first hydraulic cylinder and the first lower inclined wedge.

[0028] In a preferred embodiment of the present invention, the second mechanical adjustment part includes a second wedge block structure that can be raised and lowered to adjust the height, and the top end support of the second wedge block structure is provided with an exit roller; the second power actuator can push and pull the second wedge block structure to adjust the roller surface height of the exit roller.

[0029] In a preferred embodiment of the present invention, the second wedge block structure comprises a second upper inclined wedge and a second lower inclined wedge which are arranged in a vertically contacting manner, and the top surface of the second lower inclined wedge and the bottom surface of the second upper inclined wedge are arranged in an inclined manner; the upper support of the second upper inclined wedge is connected to the outlet roller bearing seat;

[0030] One side of the second lower inclined wedge is connected to the second power actuator, and a second position detection unit is arranged on the second power actuator. The second power actuator pushes and pulls the second lower inclined wedge to drive the exit roller above the second upper inclined wedge to rise and fall so as to adjust the roller surface height of the exit roller. The second position detection unit monitors the horizontal movement distance of the second lower inclined wedge in real time.

[0031] In a preferred embodiment of the present invention, the second mechanical adjustment part includes a third inclined wedge guide rail frame, the third inclined wedge guide rail frame includes a third base, and a third guide vertical plate is arranged on the third base at one lateral side of the second wedge block structure; a fourth inclined wedge guide rail frame is arranged on the third base at the other lateral side of the second wedge block structure, the fourth inclined wedge guide rail frame includes a fourth base, and a fourth guide vertical plate parallel to and spaced from the third guide vertical plate is arranged on one side of the fourth base, and the second lower inclined wedge, the second upper inclined wedge and the outlet roller bearing seat are lifted and lowered between the third guide vertical plate and the fourth guide vertical plate.

[0032] The purpose of the present invention can also be achieved in this way. A method for adjusting the shearing line of a crank rocker flying shear strip steel comprises: a first adjustment structure connected to the adjustment structure of the crank rocker flying shear strip steel shearing line below the lower pinch roller at the entrance, and a second adjustment structure connected to the adjustment structure of the crank rocker flying shear strip steel shearing line below the exit roller; the roller surface elevations of the lower pinch roller and the exit roller are adjusted by the first adjustment structure and the second adjustment structure until the lower shearing blade shearing line and the actual steel strip running line coincide, and the lower shearing blade shearing line and the actual steel strip running line are at a set elevation angle with the horizontal line.

[0033] As described above, the adjustment structure and method of the crank rocker flying shear strip steel shearing line of the present invention have the following beneficial effects:

[0034] The first adjustment structure of the present invention can flexibly and steplessly adjust the roller surface elevation of the lower pinch roller at the entrance through a mechanical mechanism, and the second adjustment structure can flexibly and steplessly adjust the roller surface elevation of the outlet roller at the entrance through a mechanical mechanism, thereby realizing flexible and precise adjustment of the actual steel strip route formed by the common tangent line of the upper roller surface of the lower pinch roller and the outlet roller, the shearing line of the lower shear blade coincides with the actual steel strip route, and forms a set elevation angle with the horizontal line in the direction of strip travel, thereby achieving an ideal shearing mode, avoiding the strip from being scratched by the shear blade, and improving product quality; avoiding belt breakage accidents, and eliminating shutdown hazards; the belt head can be smoothly threaded to realize continuous operation of the unit; the upper shear blade avoids bearing large additional loads and impacts, thereby extending the service life of the shear blade; the adjustment means are flexible, convenient, time-saving and labor-saving, and work efficiency is improved.

[0035] The present invention is applied to the above-mentioned high-performance cold-rolled thin plate crank rocker flying shear. During the production process, the shear line height of the strip steel at the flying shear can be accurately adjusted according to the shearing accuracy requirements to achieve an ideal shearing mode. While achieving high-quality shearing, the shear blade life can be maximized, strip scratches can be reduced, and strip break accidents can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The following drawings are only intended to illustrate and explain the present invention, and are not intended to limit the scope of the present invention.

[0037] in:

[0038] Figure 1 It is a schematic diagram of an ideal shearing state of the adjustment structure of the crank rocker flying shear strip steel shearing line using the present invention.

[0039] Figure 2 When the cylinder rod of the first hydraulic cylinder of the present invention is retracted Figure 1 Schematic diagram of AA.

[0040] Figure 3 When the cylinder rod of the first hydraulic cylinder of the present invention is extended Figure 1 Schematic diagram of AA.

[0041] Figure 4 It is a schematic diagram of the ideal shearing state of the existing crank rocker flying shear area.

[0042] Figure 5 It is a schematic diagram of the shearing state of the existing crank rocker flying shear area when the shearing line of the lower shear blade is higher than the actual steel strip running line.

[0043] Figure 6 It is a schematic diagram of the shearing state of the existing crank rocker flying shear area when the shearing line of the lower shear blade is lower than the actual steel strip running line.

[0044] In the figure:

[0045] 1. Upper shear blade;

[0046] 2. Lower shear blade;

[0047] 3. Upper knife holder;

[0048] 4. Lower knife holder;

[0049] 5. Swing trajectory of lower shear blade;

[0050] 6. Lower shear blade shear line;

[0051] 71. Upper pinch roller; 72. Articulated shaft; 73. Upper pinch roller swing arm; 74. Bearing seat; 75. Hydraulic cylinder;

[0052] 81. Lower pinch roller; 82. Lower pinch roller fixed bearing seat;

[0053] 9. Export roller;

[0054] 10. Actual steel strip routing;

[0055] 11. Belt threading guide;

[0056] 12. First adjustment structure; 121. Fourth self-lubricating slide plate; 122. Lower pinch roller bearing seat; 123. First inclined wedge guide rail frame; 124. First upper inclined wedge; 125. Second wear-resistant plate; 126. First self-lubricating slide plate; 127. First lower inclined wedge; 128. Third self-lubricating slide plate; 129. First wear-resistant plate; 1210. Second inclined wedge guide rail frame; 1211. Second self-lubricating slide plate; 1212. First bolt; 1213. First hydraulic cylinder; 1214. First hydraulic cylinder bracket; 1215. First displacement sensor; 1216. Guide block;

[0057] 13. Second adjustment structure;

[0058] 14. Horizontal line. DETAILED DESCRIPTION

[0059] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0060] The specific embodiments of the present invention described herein are only used to explain the purpose of the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should be considered to belong to the scope of the present invention. It should be noted that when an element is referred to as "arranged on" another element, it can be directly on the other element or there can also be a central element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a central element at the same time. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation method.

[0061] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0062] like Figures 1 to 3 As shown, the present invention provides an adjustment structure of a crank rocker flying shear strip shearing line, comprising a first adjustment structure 12 and a second adjustment structure 13, wherein the first adjustment structure is arranged below the lower pinch roller 81 and is used to adjust the roller surface height of the lower pinch roller 81 (arranged in pairs with the upper pinch roller 71 at the entrance of the flying shear, in the prior art); the first adjustment structure comprises a first power actuator and a first mechanical adjustment part; the second adjustment structure is arranged below the outlet roller 9 (arranged at the entrance of the flying shear, in the prior art) and is used to adjust the roller surface height of the outlet roller 9; the second adjustment structure comprises a second power actuator and a second mechanical adjustment part; the first adjustment structure and the second adjustment structure cooperate to adjust the roller surface height of the lower pinch roller 81 at the entrance and the outlet roller 9 so that the actual strip steel line 10 coincides with the lower shear blade shearing line 6 and the actual strip steel line 10 and the lower shear blade shearing line 6 are arranged at a set elevation angle α with the horizontal line in the strip steel walking direction. The value of the elevation angle is determined according to actual production needs.

[0063] The layout of the flying shear area is as follows: the strip running direction is the pinch roller with adjustable roller surface elevation, the crank rocker flying shear, and the exit roller with adjustable roller surface elevation.

[0064] The common tangent line between the lower pinch roller 81 and the upper roller surface of the exit roller 9 is the actual strip steel line 10. Theoretically, it is ideal that the shearing edge of the lower shear blade 2 is tangent to the lower surface of the strip steel, that is, the shearing line 6 of the lower shear blade completely coincides with the actual strip steel line 10, and the strip steel advance direction is at a certain elevation angle to the horizontal line 14. In this way, after the flying shear completes a shearing, the strip head can be smoothly threaded under a certain upward inertia.

[0065] The first adjustment structure of the present invention can flexibly and steplessly adjust the roller surface elevation of the lower clamping roller 81 at the entrance through a mechanical mechanism, and the second adjustment structure can flexibly and steplessly adjust the roller surface elevation of the outlet roller 9 at the entrance through a mechanical mechanism, thereby realizing flexible and precise adjustment of the actual strip steel line 10 formed by the common tangent line of the upper roller surface of the lower clamping roller 81 and the outlet roller 9, and the lower shear blade shear line 6 coincides with the actual strip steel line 10, and is set at an elevation angle with the horizontal line in the direction of strip travel, thereby achieving an ideal shearing mode, avoiding the strip from being scratched by the shear blade, and improving product quality; avoiding belt breakage accidents, and eliminating shutdown hazards; the belt head can be smoothly threaded to realize continuous operation of the unit; the upper shear blade avoids bearing large additional loads and impacts, thereby extending the service life of the shear blade; the adjustment means are flexible, convenient, time-saving and labor-saving, and work efficiency is improved.

[0066] Furthermore, the first mechanical adjustment part includes a first wedge block structure that can be raised and lowered to adjust the height, and the top end support of the first wedge block structure is provided with a lower pinch roller 81; the first power actuator can push and pull the first wedge block structure to adjust the roller surface height of the lower pinch roller 81.

[0067] Further, if Figure 1 , Figure 2 , Figure 3 As shown, the first wedge block structure includes a first upper inclined wedge 124 and a first lower inclined wedge 127 which are arranged in close contact with each other, and the top surface of the first lower inclined wedge 127 and the bottom surface of the first upper inclined wedge 124 are arranged in an inclined surface; the upper support of the first upper inclined wedge 124 is connected to the lower pinch roller bearing seat 122; the lower pinch roller bearing seat 122 is connected to the first upper inclined wedge 124 by a first bolt 1212, and the lower pinch roller 81 is fastened to the lower pinch roller bearing seat 122 by bolts.

[0068] One side of the first lower inclined wedge 127 is connected to the first power actuator, and the first power actuator is provided with a first position detection unit. The first power actuator pushes and pulls the first lower inclined wedge 127 to drive the lower pinch roller 81 above the first upper inclined wedge 124 to rise and fall so as to adjust the roller surface height of the lower pinch roller 81. The first position detection unit monitors the horizontal movement distance of the first lower inclined wedge 127 in real time, and accurately calculates and converts the inclined surface slope of the top surface of the first lower inclined wedge 127 and the bottom surface of the first upper inclined wedge 124 into a height value, thereby accurately controlling and adjusting the roller surface elevation of the lower pinch roller 81.

[0069] Further, if Figure 1 As shown, the first mechanical adjustment part includes a first inclined wedge guide rail frame 123, and the first inclined wedge guide rail frame 123 has high strength; the first inclined wedge guide rail frame 123 includes a first base, and a first guide vertical plate is arranged on the first base at one lateral side of the first wedge block structure; a second inclined wedge guide rail frame 1210 is arranged on the first base at the other lateral side of the first wedge block structure, and the second inclined wedge guide rail frame 1210 includes a second base, and a swing mechanism bracket of an upper clamping roller is supported and arranged above the second base (existing technology), and the swing mechanism bracket of the upper clamping roller is engaged with the second base.

[0070] A second guide vertical plate is provided on one side of the second base, which is parallel to and spaced from the first guide vertical plate. The first lower inclined wedge 127, the first upper inclined wedge 124 and the lower pinch roller bearing seat 122 are lifted and lowered between the first guide vertical plate and the second guide vertical plate.

[0071] Further, if Figure 1 As shown, a first self-lubricating slide 126 is provided on the side of the first guide vertical plate close to the first wedge block structure; a second self-lubricating slide 1211 is provided on the side of the second guide vertical plate close to the first wedge block structure; the first lower inclined wedge 127, the first upper inclined wedge 124 and the lateral side surfaces of the lower pinch roller bearing seat 122 are slidably fitted with the first self-lubricating slide 126 and the second self-lubricating slide 1211 respectively.

[0072] Specifically, three first self-lubricating slides 126 are arranged on the first guide vertical plate from top to bottom, and are used for sliding guidance of the first lower inclined wedge 127, the first upper inclined wedge 124 and the lateral side of the lower clamping roller bearing seat 122 respectively; each first self-lubricating slide 126 is bolted to the first guide vertical plate (the side processing surface of the second inclined wedge guide rail frame 1210) by means of bolts.

[0073] Three second self-lubricating slide plates 1211 are arranged on the second guide vertical plate from top to bottom, respectively used for sliding and guiding the first lower inclined wedge 127, the first upper inclined wedge 124 and the lateral side of the lower pinch roller bearing seat 122. Each second self-lubricating slide plate 1211 is bolted to the second guide vertical plate (the side processing surface of the first inclined wedge guide rail frame 123).

[0074] Further, if Figure 2 , Figure 3 As shown, guide blocks 1216 are respectively arranged on both sides of the length direction of the first upper inclined wedge on the second base, and a fifth self-lubricating slide plate is arranged on one side of the guide block 1216 close to the first upper inclined wedge 124. The two side surfaces in the length direction of the first upper inclined wedge 124 are slidably fitted with the two fifth self-lubricating slide plates. The first upper inclined wedge 124 drives the lower pinch roller 81 to move up and down between the two guide blocks 1216. The guide blocks 1216 ensure that the first upper inclined wedge 124 is raised and lowered without causing horizontal movement, thereby achieving the requirement of accurate and stepless adjustment of the roller surface elevation of the lower pinch roller 81.

[0075] Further, if Figure 2 , Figure 3 As shown, a third self-lubricating slide 128 is arranged on the bottom surface of the first lower inclined wedge 127, a first wear-resistant plate 129 is arranged on the first base, and the third self-lubricating slide 128 and the first wear-resistant plate 129 are slidably fitted; a fourth self-lubricating slide 121 is arranged on the top surface of the first lower inclined wedge 127; a second wear-resistant plate 125 is arranged on the bottom surface of the first upper inclined wedge 124, and the fourth self-lubricating slide 121 and the second wear-resistant plate 125 are slidably fitted.

[0076] Furthermore, a first groove is provided on the first base, and the first wear-resistant plate 129 is provided in the first groove and the top surface of the first wear-resistant plate 129 protrudes out of the first groove. The first wear-resistant plate 129 is fastened in the first groove by bolts.

[0077] Further, if Figure 2 , Figure 3 As shown, the first power actuator includes a first hydraulic cylinder 1213, the cylinder body of the first hydraulic cylinder 1213 is fixedly connected to the first hydraulic cylinder bracket 1214, and the cylinder rod of the first hydraulic cylinder 1213 is connected to the first lower inclined wedge 127 (the rod head of the cylinder rod is connected to the first lower inclined wedge 127 through a thread); a first displacement sensor 1215 is provided on the first hydraulic cylinder 1213, and the first displacement sensor 1215 is used to detect the horizontal movement distance of the cylinder rod of the first hydraulic cylinder and the first lower inclined wedge 127. The cylinder rod of the first hydraulic cylinder 1213 extends and retracts to drive the first lower inclined wedge 127 to move horizontally in the roller body direction, and the movement distance is accurately controlled by the first displacement sensor 1215. The first upper inclined wedge 124 drives the lower pinch roller 81 to move up and down between the two guide blocks 1216 along with the first lower inclined wedge 127, so as to achieve the requirement of accurate and stepless adjustment of the roller surface elevation of the lower pinch roller 81.

[0078] The first hydraulic cylinder 1213 can be replaced by a lift and a motor combination, and the first displacement sensor can be replaced by an absolute encoder.

[0079] Furthermore, the principle and method of the second adjustment structure 13 for adjusting the roller surface elevation of the outlet roller 9 are substantially the same as the roller surface elevation adjustment structure and method of the lower pinch roller at the inlet.

[0080] like Figure 1 As shown, the second mechanical adjustment part includes a second wedge block structure that can be raised and lowered to adjust the height, and the top end support of the second wedge block structure is provided with an outlet roller 9; the second power actuator can push and pull the second wedge block structure to adjust the roller surface height of the outlet roller 9.

[0081] Furthermore, the second wedge block structure includes a second upper inclined wedge and a second lower inclined wedge which are arranged in a vertically contacting manner, and the top surface of the second lower inclined wedge and the bottom surface of the second upper inclined wedge are arranged in an inclined surface; the upper support of the second upper inclined wedge is connected to the outlet roller bearing seat;

[0082] One side of the second lower inclined wedge is connected to the second power actuator, and a second position detection unit is arranged on the second power actuator. The second power actuator pushes and pulls the second lower inclined wedge to drive the exit roller above the second upper inclined wedge to rise and fall so as to adjust the roller surface height of the exit roller. The second position detection unit monitors the horizontal movement distance of the second lower inclined wedge in real time.

[0083] Furthermore, the second mechanical adjustment part includes a third inclined wedge guide rail frame, the third inclined wedge guide rail frame includes a third base, and a third guide vertical plate is arranged on the third base at one lateral side of the second wedge block structure; a fourth inclined wedge guide rail frame is arranged on the third base at the other lateral side of the second wedge block structure, the fourth inclined wedge guide rail frame includes a fourth base, and a fourth guide vertical plate parallel to and spaced from the third guide vertical plate is arranged on one side of the fourth base, and the second lower inclined wedge, the second upper inclined wedge and the exit roller bearing seat are raised and lowered between the third guide vertical plate and the fourth guide vertical plate.

[0084] Self-lubricating slide plates are arranged on opposite sides of the third guide vertical plate and the fourth guide vertical plate for slidingly fitting the second lower inclined wedge, the second upper inclined wedge and the outlet roller bearing seat.

[0085] The second power actuator includes a second hydraulic cylinder, the cylinder body of the second hydraulic cylinder is fixedly connected to the second cylinder bracket, the cylinder rod of the second hydraulic cylinder is connected to the second lower inclined wedge (the rod head of the cylinder rod is connected to the second lower inclined wedge by a thread); a second displacement sensor is arranged on the second hydraulic cylinder, and the second displacement sensor is used to detect the horizontal movement distance of the cylinder rod of the second hydraulic cylinder and the second lower inclined wedge. The extension and retraction of the cylinder rod of the second hydraulic cylinder drives the second lower inclined wedge to move horizontally in the direction of the roller body, and the movement distance is accurately controlled by the second displacement sensor. The second upper inclined wedge drives the outlet roller 9 to move up and down with the second lower inclined wedge, so as to achieve the requirement of accurate and stepless adjustment of the roller surface elevation of the outlet roller 9.

[0086] The second hydraulic cylinder can be replaced by a lifter and a motor combination, and the second displacement sensor can be replaced by an absolute encoder.

[0087] The present invention is provided with a first adjustment structure 12 and a second adjustment structure 13, which can flexibly adjust the roller surface height of the lower clamping roller at the entrance and the exit roller through reliable position detection elements to achieve an ideal shearing state in which the lower shear blade shearing line 6 coincides with the actual strip steel line 10.

[0088] The present invention provides a method for adjusting the shearing line of a crank rocker flying shear strip steel, comprising: connecting a first adjustment structure 12 below a lower pinch roller 81 at an inlet, and connecting a second adjustment structure below an outlet roller 9;

[0089] Place a ruler (existing technology) on the roller surface of the lower pinch roller 81 and the outlet roller 9, jog the flying shear, observe the swing trajectory of the lower shear blade 2 of the flying shear, and adjust the roller surface elevation of the lower pinch roller 81 and the outlet roller 9 through the first adjustment structure 12 and the second adjustment structure according to the relative position of the highest point of the lower shear blade 2 and the lower surface of the ruler, until the actual steel strip route 10 and the lower shear blade shear line 6 coincide with each other, and the actual steel strip route 10 and the lower shear blade shear line 6 are at a set elevation angle with the horizontal line.

[0090] For the shearing state where the lower shearing blade shearing line 6 is higher than the actual strip steel running line 10 (the positional relationship between the lower shearing blade shearing line 6 and the actual strip steel running line 10 is shown in the attached figure) Figure 5 ), the roller surface elevation of the lower pinch roller 81 is lowered by the first adjustment structure 12, and the roller surface elevation of the outlet roller 9 is raised to a suitable value by the second adjustment structure, so that the actual strip walking line 10 coincides with the lower shear blade shearing line 6, and forms a certain elevation angle in the walking direction of the strip, thereby achieving an ideal shearing mode.

[0091] For the shearing state where the shearing line 6 of the lower shear blade is lower than the actual steel strip running line 10 (the positional relationship of the lower shearing line 6 being lower than the actual steel strip running line 10 is shown in the attached figure), Figure 6 ), the roller surface elevation of the lower pinch roller 81 is lowered by the first adjustment structure 12, and the roller surface elevation of the outlet roller 9 is adjusted to a suitable value by the second adjustment structure, so that the actual steel strip walking line 10 coincides with the lower shear blade shearing line 6, and forms a certain elevation angle in the walking direction of the strip, thereby achieving an ideal shearing mode.

[0092] Embodiment 1

[0093] For example, in a continuous production galvanizing unit, the layout of the flying shear area is the same as in the attached Figure 1 The flying shear body is installed according to the theoretical calibration value in the design stage. The first hydraulic cylinder 1213 of the first adjustment structure 12 is extended to the middle position, and the lower pinch roller 81 of the entrance is installed according to the theoretical steel wire elevation. The second hydraulic cylinder of the second adjustment structure 13 is extended to the middle position, and the outlet roller 9 is installed. In order to achieve the common tangent line between the upper roller surface of the lower pinch roller 81 and the upper roller surface of the outlet roller 9, that is, the actual steel wire is at an elevation angle with the horizontal line, the roller surface elevation of the outlet roller 9 is 40mm higher than the roller surface elevation of the lower pinch roller 81 during the initial installation.

[0094] After the initial installation is completed, a pre-processed steel ruler (existing technology) is placed on the roller surface of the lower pinch roller 81 and the outlet roller 9, and the flying shear is moved in steps to observe the swing trajectory of the lower shear blade 2 of the flying shear. There are three situations as follows:

[0095] 1. If the highest point of the lower shear blade 2 is just tangent to the lower surface of the steel ruler (i.e. the actual steel line), that is, the flying shear area layout and the ideal shearing state are met, then it is installed in place.

[0096] 2. If the highest point of the lower shear blade 2 is lower than the lower surface of the steel ruler, that is, the shear line 6 of the lower shear blade is lower than the actual steel strip running line 10, use a feeler gauge to measure the specific value, and theoretically calculate the value of the roller surface elevation that needs to be adjusted (increase or decrease) of the lower clamping roller 81 and the outlet roller 9. According to the inclination parameters of the inclined wedge, calculate the required retraction or extension length of the hydraulic cylinder (first hydraulic cylinder 1213, second hydraulic cylinder), and use the displacement sensor (first displacement sensor 1215, second displacement sensor) to accurately control the stroke of the hydraulic cylinder to achieve the ideal shearing state in which the shear line is accurately adjusted to coincide with the steel strip and is at a set elevation angle with the horizontal line.

[0097] 3. If the highest point of the lower shear blade 2 is higher than the lower surface of the steel ruler, that is, the shear line 6 of the lower shear blade is higher than the actual steel strip line 10, then at the same time, the lower pinch roller 81 and the exit roller 9 roller surface elevation are increased significantly to make the actual steel strip line 10 higher than the highest point of the lower shear blade 2 (that is, the shear line 6 of the lower shear blade is lower than the actual steel strip line 10), and the adjustment method of the above situation 2 is repeated to finally achieve the ideal shearing state in which the shear line is precisely adjusted to coincide with the steel strip line and is at a set elevation angle with the horizontal line.

[0098] The aforementioned adjustment method can also be flexibly adjusted according to actual conditions to ultimately achieve an ideal shearing state in which the shearing line is precisely adjusted to coincide with the steel wire and is at a set elevation angle with the horizontal line.

[0099] As described above, the adjustment structure and method of the crank rocker flying shear strip steel shearing line of the present invention have the following beneficial effects:

[0100] The first adjustment structure of the present invention can flexibly and steplessly adjust the roller surface elevation of the lower pinch roller at the entrance through a mechanical mechanism, and the second adjustment structure can flexibly and steplessly adjust the roller surface elevation of the outlet roller at the entrance through a mechanical mechanism, thereby realizing flexible and precise adjustment of the actual steel strip route formed by the common tangent line of the upper roller surface of the lower pinch roller and the outlet roller, the shearing line of the lower shear blade coincides with the actual steel strip route, and forms a set elevation angle with the horizontal line in the direction of strip travel, thereby achieving an ideal shearing mode, avoiding the strip from being scratched by the shear blade, and improving product quality; avoiding belt breakage accidents, and eliminating shutdown hazards; the belt head can be smoothly threaded to realize continuous operation of the unit; the upper shear blade avoids bearing large additional loads and impacts, thereby extending the service life of the shear blade; the adjustment means are flexible, convenient, time-saving and labor-saving, and work efficiency is improved.

[0101] The present invention is applied to the above-mentioned high-performance cold-rolled thin plate crank rocker flying shear. During the production process, the shear line height of the strip steel at the flying shear can be accurately adjusted according to the shearing accuracy requirements to achieve an ideal shearing mode. While achieving high-quality shearing, the shear blade life can be maximized, strip scratches can be reduced, and strip break accidents can be avoided.

[0102] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. An adjustment structure for the shearing line of a crank rocker flying shear strip, characterized in that: It comprises a first adjustment structure and a second adjustment structure, wherein the first adjustment structure is arranged below the lower pinch roller and is used to adjust the roller surface height of the lower pinch roller; the first adjustment structure comprises a first power actuator and a first mechanical adjustment part; the second adjustment structure is arranged below the outlet roller and is used to adjust the roller surface height of the outlet roller; The second adjustment structure includes a second power actuator and a second mechanical adjustment part; the first adjustment structure and the second adjustment structure cooperate to adjust the roller surface height of the lower pinch roller and the exit roller so that the actual steel strip running line coincides with the shearing line of the lower shear blade and the actual steel strip running line and the shearing line of the lower shear blade are set at a set elevation angle with the horizontal line in the running direction of the strip.

2. The adjustment structure of the crank rocker flying shear strip steel shearing line according to claim 1, characterized in that: The first mechanical adjustment part includes a first wedge block structure that can be raised and lowered to adjust the height, and the top end of the first wedge block structure supports the lower pinch roller; the first power actuator can push and pull the first wedge block structure to adjust the roller surface height of the lower pinch roller.

3. The adjustment structure of the crank rocker flying shear strip steel shearing line according to claim 2, characterized in that: The first wedge block structure comprises a first upper inclined wedge and a first lower inclined wedge which are arranged in a vertically contacting manner, wherein the top surface of the first lower inclined wedge and the bottom surface of the first upper inclined wedge are arranged in an inclined manner; the upper support of the first upper inclined wedge is connected to the lower pinch roller bearing seat; One side of the first lower inclined wedge is connected to the first power actuator, and a first position detection unit is arranged on the first power actuator. The first power actuator pushes and pulls the first lower inclined wedge to drive the lower pinch roller above the first upper inclined wedge to rise and fall so as to adjust the roller surface height of the lower pinch roller. The first position detection unit monitors the horizontal movement distance of the first lower inclined wedge in real time.

4. The adjustment structure of the crank rocker flying shear strip steel shearing line according to claim 3 is characterized in that: The first mechanical adjustment part includes a first inclined wedge guide rail frame, the first inclined wedge guide rail frame includes a first base, a first guide vertical plate is arranged on the first base at one lateral side of the first wedge block structure; a second inclined wedge guide rail frame is arranged on the first base at the other lateral side of the first wedge block structure, the second inclined wedge guide rail frame includes a second base, a swing mechanism bracket of an upper pinch roller is supported above the second base, a second guide vertical plate parallel to and spaced from the first guide vertical plate is arranged on one side of the second base, and the first lower inclined wedge, the first upper inclined wedge and the lower pinch roller bearing seat are raised and lowered between the first guide vertical plate and the second guide vertical plate.

5. The adjustment structure of the crank rocker flying shear strip steel shearing line according to claim 4, characterized in that: A first self-lubricating slide is provided on the side of the first guide vertical plate close to the first wedge block structure; a second self-lubricating slide is provided on the side of the second guide vertical plate close to the first wedge block structure; the first lower inclined wedge, the first upper inclined wedge and the lateral side surfaces of the lower pinch roller bearing seat are slidably fitted with the first self-lubricating slide and the second self-lubricating slide respectively.

6. The adjustment structure of the crank rocker flying shear strip steel shearing line according to claim 4, characterized in that: Guide blocks are respectively arranged on both sides of the first upper inclined wedge in the length direction on the second base, and a fifth self-lubricating slide is arranged on one side of the guide block close to the first upper inclined wedge, and the two side surfaces of the first upper inclined wedge in the length direction are slidably fitted with the two fifth self-lubricating slides.

7. The adjustment structure of the crank rocker flying shear strip steel shearing line according to claim 4, characterized in that: A third self-lubricating slide is arranged on the bottom surface of the first lower inclined wedge, a first wear-resistant plate is arranged on the first base, and the third self-lubricating slide is slidably fitted with the first wear-resistant plate; a fourth self-lubricating slide is arranged on the top surface of the first lower inclined wedge; a second wear-resistant plate is arranged on the bottom surface of the first upper inclined wedge, and the fourth self-lubricating slide is slidably fitted with the second wear-resistant plate.

8. The adjustment structure of the crank rocker flying shear strip steel shearing line according to claim 7, characterized in that: A first groove is arranged on the first base, the first wear-resistant plate is arranged in the first groove, and the top surface of the first wear-resistant plate protrudes out of the first groove.

9. The adjustment structure of the crank rocker flying shear strip steel shearing line according to claim 3, characterized in that: The first power actuator includes a first hydraulic cylinder, a cylinder body of the first hydraulic cylinder is fixedly connected to a first cylinder bracket, and a cylinder rod of the first hydraulic cylinder is connected to the first lower inclined wedge; a first displacement sensor is arranged on the first hydraulic cylinder, and the first displacement sensor is used to detect the horizontal movement distance of the cylinder rod of the first hydraulic cylinder and the first lower inclined wedge.

10. The adjustment structure of the crank rocker flying shear strip steel shearing line according to claim 1, characterized in that: The second mechanical adjustment part includes a second wedge block structure that can be raised and lowered to adjust the height, and the top end support of the second wedge block structure is used to set the outlet roller; the second power actuator can push and pull the second wedge block structure to adjust the roller surface height of the outlet roller.

11. The adjustment structure of the crank rocker flying shear strip steel shearing line according to claim 10, characterized in that: The second wedge block structure comprises a second upper inclined wedge and a second lower inclined wedge which are arranged in a vertically contacting manner, wherein the top surface of the second lower inclined wedge and the bottom surface of the second upper inclined wedge are arranged in an inclined manner; the upper support of the second upper inclined wedge is connected to the outlet roller bearing seat; One side of the second lower inclined wedge is connected to the second power actuator, and a second position detection unit is arranged on the second power actuator. The second power actuator pushes and pulls the second lower inclined wedge to drive the exit roller above the second upper inclined wedge to rise and fall so as to adjust the roller surface height of the exit roller. The second position detection unit monitors the horizontal movement distance of the second lower inclined wedge in real time.

12. The adjustment structure of the crank rocker flying shear strip steel shearing line according to claim 11, characterized in that: The second mechanical adjustment part includes a third inclined wedge guide rail frame, the third inclined wedge guide rail frame includes a third base, and a third guide vertical plate is arranged on the third base at one lateral side of the second wedge block structure; a fourth inclined wedge guide rail frame is arranged on the third base at the other lateral side of the second wedge block structure, the fourth inclined wedge guide rail frame includes a fourth base, and a fourth guide vertical plate parallel to and spaced from the third guide vertical plate is arranged on one side of the fourth base, and the second lower inclined wedge, the second upper inclined wedge and the outlet roller bearing seat are lifted and lowered between the third guide vertical plate and the fourth guide vertical plate.

13. A method for adjusting the shearing line of a crank rocker flying shear strip, characterized in that: include: The first adjustment structure of the adjustment structure of the crank rocker flying shear strip shearing line as described in any one of claims 1 to 12 is connected below the lower pinch roller at the entrance, and the second adjustment structure of the adjustment structure of the crank rocker flying shear strip shearing line as described in any one of claims 1 to 12 is connected below the exit roller; the roller surface elevations of the lower pinch roller and the exit roller are adjusted by the first adjustment structure and the second adjustment structure until the actual steel strip routing line and the lower shear blade shearing line coincide, and the actual steel strip routing line and the lower shear blade shearing line are at a set elevation angle with the horizontal line.

Images