Multi-shear-blade roller flying shear and design method thereof

Abstract

The invention provides a multi-shear-blade roller flying shear and a design method thereof. The multi-shear-blade roller flying shear comprises an upper roller, a lower roller, an upper shear blade, a lower shear blade, an upper shear blade pressing block and a lower shear blade pressing block, shear blade grooves, used for installing the upper shear blade and the lower shear blade, of the upper roller and the lower roller are of a multi-section structure, the section number of the shear blade grooves of the upper roller and the lower roller is an odd number, all the sectional shear blade grooves of the upper roller are communicated with one another, and all the sectional shear blade grooves of the lower roller are communicated with one another. And all the sectional shear blade grooves of the lower roller are communicated with one another. According to the multi-shear-blade roller flying shear, the shear blade grooves of the upper shear blade and the lower shear blade are of a multi-section type structure, the multi-section type structure is similar to a spiral line design form from the calculus concept, sectional type machining and sectional type installation are adopted when the multi-section type structure is machined and installed, and therefore the problem that a spiral line is difficult to machine and install is solved.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical steel rolling machinery, and in particular to a multi-shear blade drum flying shear and a design method thereof. Background Art

[0002] At present, flying shears are widely used in the continuous production and processing lines of strip steel in the metallurgical industry. The connecting rod flying shear is not suitable for high-speed shearing due to its large rotational inertia. The drum flying shear has a shear blade set on a circular drum with a small rotational inertia, which is suitable for high-speed shearing.

[0003] In the prior art, the shear blades of the drum-type flying shears are designed in a spiral line form. Although this can ensure uniform shear blade gaps, it is very difficult to process and install, and requires extremely high toughness and strength of the shear blade material. Summary of the invention

[0004] The main purpose of the present invention is to provide a multi-blade drum flying shear and a design method thereof, aiming to reduce the difficulty of processing and assembling the shear blades.

[0005] To achieve the above-mentioned purpose, the present invention provides a multi-shearing blade roller flying shear, comprising an upper roller, a lower roller, an upper shearing blade, a lower shearing blade, an upper shearing blade pressing block and a lower shearing blade pressing block, wherein the shearing blade grooves on the upper roller and the lower roller for installing the upper shearing blade and the lower shearing blade adopt a multi-section structure, the number of sections of the shearing blade grooves of the upper roller and the lower roller is an odd number, all the sectioned shearing blade grooves of the upper roller are interconnected, and all the sectioned shearing blade grooves of the lower roller are interconnected.

[0006] Preferably, the shear blade groove is a straight shear blade.

[0007] Preferably, the shearing grooves of the upper roller and the lower roller each include a first shearing groove section located in the middle and a second shearing groove section and a third shearing groove section located at both ends of the first shearing groove section, wherein: The first section of the shearing groove is machined symmetrically with oblique straight lines from the middle section of the drum to both sides.

[0008] Preferably, the second section shearing blade groove and the third section shearing blade groove both start from the two side end faces of the first section shearing blade groove, and the side wall of the shearing blade section used to contact the upper shearing blade or the lower shearing blade is its first side wall. By adjusting the angle of the shearing blade groove, the first side wall is made to be in a straight line with the center of the current cross-section of the roller, and is extended toward the end face in the direction of the shearing blade groove.

[0009] Preferably, the cross-section of the first shearing groove on the drum center section is a central cross-section, the first side wall of the central cross-section is in a straight line with the transverse symmetry axis of the drum center section, and the bottom wall of the first shearing groove is arranged parallel to the vertical symmetry axis of the drum center section.

[0010] Preferably, the groove widths of the first section shearing edge groove, the second section shearing edge groove and the third section shearing edge groove are all equal.

[0011] The present invention further proposes a design method for a multi-shear blade roller flying shear, in which the shear blade grooves on the upper roller and the lower roller for installing the upper shear blade and the lower shear blade are set as a multi-section structure, the number of sections of the shear blade grooves of the upper roller and the lower roller is an odd number, all the sectioned shear blade grooves of the upper roller are interconnected, and all the sectioned shear blade grooves of the lower roller are interconnected.

[0012] Preferably, the shearing blade groove is a straight shearing blade, and the shearing blade grooves of the upper roller and the lower roller each include a first shearing blade groove located in the middle and a second shearing blade groove and a third shearing blade groove located at both ends of the first shearing blade groove, wherein: The first section of the shearing groove is machined symmetrically with oblique straight lines from the middle section of the drum to both sides. Preferably, the second section shearing blade groove and the third section shearing blade groove both start from the two side end faces of the first section shearing blade groove, and the side wall of the shearing blade section used to contact the upper shearing blade or the lower shearing blade is its first side wall. By adjusting the angle of the shearing blade groove, the first side wall is made to be in a straight line with the center of the current cross-section of the roller, and is extended toward the end face in the direction of the shearing blade groove.

[0013] Preferably, the cross-section of the first shearing groove on the drum center section is a central cross-section, the first side wall of the central cross-section is in a straight line with the transverse symmetry axis of the drum center section, and the bottom wall of the first shearing groove is arranged parallel to the vertical symmetry axis of the drum center section.

[0014] The multi-blade drum flying shear proposed by the present invention adopts a multi-segment structure for the blade grooves of the upper blade and the lower blade. The multi-segment structure is similar to a spiral design form from the concept of calculus. The multi-segment structure adopts segmented processing and segmented installation during processing and installation, thus avoiding the problem of difficult spiral processing and installation, and reducing the processing difficulty and assembly difficulty of the blade. At the same time, the multi-blade drum flying shear also has the advantages of simple structure and easy implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the roller in the multi-blade roller flying shear of the present invention; Figure 2 It is a schematic cross-sectional structural diagram of a multi-blade drum flying shear of the present invention; Figure 3a for Figure 1 A schematic cross-sectional view of the structure in the AA direction is shown; Figure 3b for Figure 1 The schematic diagram of the cross-sectional structure in the BB direction when the angle of the shearing blade groove is not adjusted; Figure 3c for Figure 1The cross-sectional structure schematic diagram in the BB direction after adjusting the shear groove angle is shown.

[0016] In the figure, 1-upper shearing blade, 2-upper shearing blade pressing block, 3-upper roller, 4-lower shearing blade, 5-lower shearing blade pressing block, 6-lower roller, 7-first section shearing blade groove, 8-second section shearing blade groove, 9-third section shearing blade groove.

[0017] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0018] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0019] It should be noted that in the description of the present invention, the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0020] The invention provides a multi-blade drum flying shear.

[0021] Reference Figure 1 and Figure 2 In the preferred embodiment, a multi-blade roller flying shear comprises an upper roller 3, a lower roller 6, an upper blade 1, a lower blade 4, an upper blade pressing block 2 and a lower blade pressing block 5. The blade grooves on the upper roller 3 and the lower roller 6 for mounting the upper blade 1 and the lower blade 4 adopt a multi-segment structure. The number of segments of the blade grooves of the upper roller 3 and the lower roller 6 is an odd number (three-segment type, five-segment type, etc.). All segmented blade grooves of the upper roller 3 are interconnected, and all segmented blade grooves of the lower roller 6 are interconnected. The upper roller 3 and the lower roller 6 are usually rollers.

[0022] Specifically, in this embodiment, the shearing blade groove is a straight shearing blade, which means that the two side walls of the shearing blade groove and the bottom wall thereof are arranged perpendicularly.

[0023] In this embodiment, the shearing groove is set to be three-stage as an example for specific description. When the shearing groove is set to be three-stage, the shearing grooves of the upper roller 3 and the lower roller 6 both include a first shearing groove 7 located in the middle and a second shearing groove 8 and a third shearing groove 9 located at both ends of the first shearing groove 7, wherein: The first section of the shearing groove 7 is the middle section of the drum (the middle section of the drum refers to Figure 1 The cross section in the AA direction is processed symmetrically on both sides with oblique straight lines starting from the middle of the drum.

[0024] Specifically, the second section shearing blade groove 8 and the third section shearing blade groove 9 both start from the two side end faces of the first section shearing blade groove 7, the side wall of the shearing blade section used to contact the upper shearing blade 1 or the lower shearing blade 4 is the first side wall, and the shearing blade section arranged opposite to the first side wall is the second side wall. By adjusting the angle of the shearing blade groove, the first side wall and the center of the current cross-section of the roller are in a straight line, and are extended toward the end face in the direction of the shearing blade groove.

[0025] like Figure 3b to Figure 3c As shown, the cross-sectional schematic diagrams of the two side end surfaces of the first section shearing groove 7 are Figure 3b In this slot structure, the two side end faces of the first section of the shear groove 7 are not in a straight line with the center of the current section of the drum. Therefore, it is necessary to start from the two side end faces of the first section of the shear groove 7 and rotate an angle to adjust to Figure 3c The slotting direction shown (that is, from Figure 3b Adjust to Figure 3c Then, an oblique straight groove is opened until it reaches the side of the drum, thereby forming the second section shearing groove 8 and the third section shearing groove 9.

[0026] Here, the two side end faces of the first shear blade groove 7 are adjusted at an angle and then oblique straight grooves are opened to form the second shear blade groove 8 and the third shear blade groove 9. This is because if the first shear blade groove 7 is set without adjusting the direction, the second side wall of the shear blade groove will be shallower, and it will not provide sufficient depth for the installation of the upper shear blade block 2 and the lower shear blade block 5 (the installation of the upper shear blade block 2 and the lower shear blade block 5 requires ensuring that the corresponding bolts have sufficient installation margin).

[0027] Specifically, Figure 3a As shown, the cross section of the first section of the shearing groove 7 on the drum is the central cross section (the schematic diagram of the central cross section is as shown in Figure 3a ), the side wall of the central section for contacting the upper shear blade 1 or the lower shear blade 4 is its first side wall, the first side wall is in a straight line with the transverse symmetry axis of the middle section of the drum, and the bottom wall of the first section of the shear blade groove 7 is arranged parallel to the vertical symmetry axis of the middle section of the drum.

[0028] In this embodiment, the groove widths of the first section shearing groove 7, the second section shearing groove 8 and the third section shearing groove 9 are all equal.

[0029] The multi-blade drum flying shear proposed in this embodiment adopts a multi-segment structure for the blade grooves of the upper blade 1 and the lower blade 4. The multi-segment structure is accumulated into a spiral design form from the concept of calculus. The multi-segment structure is processed and installed in sections during processing and installation, thus avoiding the problem of difficult spiral processing and installation, and reducing the processing and assembly difficulty of the blades. At the same time, the multi-blade drum flying shear also has the advantages of simple structure and easy implementation.

[0030] The invention further proposes a design method for a multi-blade drum flying shear.

[0031] In this preferred embodiment, a design method for a multi-shearing blade roller flying shear is provided, in which the shearing blade grooves on the upper roller 3 and the lower roller 6 for installing the upper shearing blade 1 and the lower shearing blade 4 are arranged as a multi-segment structure, the number of segments of the shearing blade grooves of the upper roller 3 and the lower roller 6 is an odd number, all the segmented shearing blade grooves of the upper roller 3 are interconnected, and all the segmented shearing blade grooves of the lower roller 6 are interconnected.

[0032] Specifically, the shearing blade groove is a straight shearing blade, and the shearing blade grooves of the upper roller 3 and the lower roller 6 each include a first shearing blade groove 7 located in the middle, and a second shearing blade groove 8 and a third shearing blade groove 9 located at both ends of the first shearing blade groove 7, wherein: The first section of the shearing groove 7 is processed with oblique straight lines symmetrically to both sides starting from the middle section of the drum.

[0033] The second section shearing blade groove 8 and the third section shearing blade groove 9 both start from the two side end faces of the first section shearing blade groove 7, and the side wall of the shearing blade section used to contact the upper shearing blade 1 or the lower shearing blade 4 is its first side wall. By adjusting the angle of the shearing blade groove, the first side wall is made to be in a straight line with the center of the current cross-section of the roller, and is extended toward the end face in the direction of the shearing blade groove.

[0034] The cross section of the first shearing groove 7 on the drum center section is the central section, the first side wall of the central section is in a straight line with the transverse symmetry axis of the drum center section, and the bottom wall of the first shearing groove 7 is parallel to the vertical symmetry axis of the drum center section.

[0035] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A multi-blade roller flying shear, comprising an upper roller, a lower roller, an upper shear blade, a lower shear blade, an upper shear blade pressing block and a lower shear blade pressing block, characterized in that: The shear blade grooves on the upper roller and the lower roller for installing the upper shear blade and the lower shear blade adopt a multi-section structure, the number of sections of the shear blade grooves of the upper roller and the lower roller is an odd number, all the sectioned shear blade grooves of the upper roller are interconnected, and all the sectioned shear blade grooves of the lower roller are interconnected.

2. The multi-blade drum flying shear according to claim 1, characterized in that: The shear blade groove is a straight shear blade.

3. The multi-blade drum flying shear according to claim 2, characterized in that: The shearing grooves of the upper roller and the lower roller each include a first shearing groove located in the middle and a second shearing groove and a third shearing groove located at both ends of the first shearing groove, wherein: The first section of the shearing groove is machined symmetrically with oblique straight lines from the middle section of the drum to both sides.

4. The multi-blade drum flying shear according to claim 3, characterized in that: The second and third shear blade grooves both start from the end faces of both sides of the first shear blade groove, and the side wall of the shear blade section that is used to contact the upper shear blade or the lower shear blade is its first side wall. By adjusting the angle of the shear blade groove, the first side wall is made to be in a straight line with the center of the current cross-section of the roller, and is extended toward the end face in the direction of the shear blade groove.

5. The multi-blade drum flying shear according to claim 3 or 4, characterized in that: The cross section of the first section of the shearing groove on the drum center section is the central section, the first side wall of the central section is in a straight line with the transverse symmetry axis of the drum center section, and the bottom wall of the first section of the shearing groove is arranged parallel to the vertical symmetry axis of the drum center section.

6. The multi-blade drum flying shear according to claim 3, characterized in that: The groove widths of the first section shearing edge groove, the second section shearing edge groove and the third section shearing edge groove are all equal.

7. A design method for a multi-blade drum flying shear, characterized in that: The shear blade grooves on the upper roller and the lower roller for installing the upper shear blade and the lower shear blade are set to a multi-section structure, the number of sections of the shear blade grooves of the upper roller and the lower roller is an odd number, all the sectioned shear blade grooves of the upper roller are interconnected, and all the sectioned shear blade grooves of the lower roller are interconnected.

8. The design method of the multi-blade drum flying shear according to claim 7, characterized in that: The shearing blade groove is a straight shearing blade, and the shearing blade grooves of the upper roller and the lower roller each include a first shearing blade groove located in the middle, and a second shearing blade groove and a third shearing blade groove located at both ends of the first shearing blade groove, wherein: The first section of the shearing groove is machined symmetrically with oblique straight lines from the middle section of the drum to both sides.

9. The design method of the multi-blade drum flying shear according to claim 7, characterized in that: The second and third shear blade grooves both start from the end faces of both sides of the first shear blade groove, and the side wall of the shear blade section that is used to contact the upper shear blade or the lower shear blade is its first side wall. By adjusting the angle of the shear blade groove, the first side wall is made to be in a straight line with the center of the current cross-section of the roller, and is extended toward the end face in the direction of the shear blade groove.

10. The design method of the multi-blade drum flying shear according to claim 7, characterized in that: The cross section of the first section of the shearing groove on the drum center section is the central section, the first side wall of the central section is in a straight line with the transverse symmetry axis of the drum center section, and the bottom wall of the first section of the shearing groove is arranged parallel to the vertical symmetry axis of the drum center section.

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