Drum flying shear and multi-axis frame

Abstract

The present invention provides a drum-type flying shear and a multi-axis frame, wherein the drum-type flying shear comprises: a frame, an upper cutter shaft, a lower cutter shaft, an upper gear and a lower gear, the frame comprises an upper connecting beam, a lower connecting beam and at least two spaced-apart arches, at least two arches are respectively arranged on a transmission side and an operating side; the arches comprise an upper archway and a lower archway; the upper cutter shaft is installed on the upper archway located on the transmission side and the upper archway located on the operating side, and the lower cutter shaft is installed on the lower archway located on the transmission side and the lower archway located on the operating side; the upper cutter shaft is connected to an upper scissors, and the lower cutter shaft is connected to a lower scissors; the upper gear is installed on the upper cutter shaft, and the lower gear is installed on the lower cutter shaft, and the upper gear is arranged on the outer side of the upper archway located on the transmission side, and the lower gear is arranged on the outer side of the lower archway located on the transmission side, and the upper gear is meshed with the lower gear, thereby solving the technical problems of difficult assembly and high manufacturing cost of the drum-type flying shear in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of strip steel processing equipment, in particular to a drum-type flying shear and a multi-axis frame. Background Art

[0002] According to the structural form, flying shears include crank flying shears, disc flying shears, and drum flying shears. In the drum flying shear, the flying shear arch is mainly used to fix the upper and lower cutter shafts and bear the shear impact. Usually, the operating side and transmission side arches are fixed to the base with bolts. The arches on both sides are connected to form a whole with upper and lower crossbeam bolts to ensure sufficient overall rigidity. The base is tightly fixed with civil engineering bolts. This arch-shaped flying shear can ensure overall rigidity, but increases the difficulty of assembly and maintenance: ① The upper and lower cutter shafts and gears are often connected by interference fit or wedge keys to resist the impact of shearing. Due to the large interference or mechanical self-locking, it is difficult to remove the gear from the cutter shaft after installation; ② Due to the need to adjust the side clearance of the shear blade, the transmission gears basically use helical gear transmission. After one of the gear pairs is installed on the upper and lower cutter shafts, the remaining meshing paired helical gears must be installed while rotating themselves and pushed axially. For hot-assembled gears, once the gear is not pushed into the cutter shaft smoothly, the cutter shaft will expand with the inner ring of the gear after heating, and the gear will be difficult to remove; ③ Since the side clearance of the shear blade requires sufficient precision, the relative positions of the meshing teeth of the helical gears and the tooth grooves, keyways, and cutter grooves must be accurate before installation. Once the meshing teeth of the upper and lower transmission gear pairs are misaligned, the cutter grooves of the upper and lower cutter shafts will also be circumferentially misaligned. The above three points are key points and difficulties in the assembly process of a drum-type flying shear. If an assembly error occurs, one of the gears must be destroyed and re-machined before assembly. This affects the delivery cycle and places enormous pressure on the assembly process. Therefore, flying shear buyers are often forced to choose manufacturers with experience in flying shear manufacturing and processing, which leads to high manufacturing costs.

[0003] Chinese invention patent application CN110666237A discloses a high-speed flying shear eccentric shearing structure for shearing thin strip steel, which adopts an integral archway, and directly processes two upper and lower bearing holes on the archway, which correspond to the bearing mounting holes of the upper and lower cutter shafts respectively. The entire frame consists of three parts: the operating side archway, the transmission side archway, and the middle connecting crossbeam. This frame structure is also a common design form at home and abroad. It is simple in design, difficult to assemble, and not convenient for the installation of gears and cutter shafts. It is mainly reflected in: 1) The frame needs to be disassembled before installing the upper and lower cutter shafts: the operating side and transmission side archways and the connecting crossbeam need to be disassembled first, and the upper and lower cutter shafts are respectively inserted into the bearing holes of the archways on both sides before installing the crossbeam to connect the archways; 2) The transmission gear must be assembled after the cutter shaft is installed in the archway. Due to the relative position relationship of the keyway, tooth groove and cutter groove, the tooth tops and tooth grooves of the meshing upper and lower gears need to be marked before installation. Once the gears are installed, the gears need to be marked. If the gear meshing position is misaligned, one gear must be scrapped and reprocessed and installed; 3) Since the inner ring of the gear and the cutter shaft use an interference fit, hot installation is often used. After installing one gear, the remaining mating gears need to be quickly rotated and pushed into place at one time. If the gear heating temperature is not appropriate or there is a deviation in the gear processing, resulting in a long gear assembly time, the cutter shaft is prone to heat expansion, and the gear will be stuck with the cutter shaft before it is installed in place, and the gear cannot be disassembled. In this case, the gear can only be destroyed, reprocessed, and reinstalled. The loss is relatively large, which increases the difficulty of assembly at the manufacturer.

[0004] In order to reduce the difficulty of manufacturing flying shear equipment, Chinese utility model patent CN2796907Y discloses a headless high-speed slitting flying shear for rolled strip steel. The form of the overall arch is changed and the overall arch is split into three parts. The arch is split at the center of the upper and lower knife shaft bearings respectively. A larger diameter concentric countersunk hole is machined at the position of the tie rod at the joint surface of the adjacent arches to place a concentric sleeve to position the three split arches. The tie rod and nut are used to lock the vertical direction. Concentric countersunk holes are machined on the joint surface of the arches to place the positioning sleeve for radial positioning. In order to obtain greater impact resistance, the diameter of the sleeve placed in the machined concentric countersunk hole reaches This is more suitable for large thick plate flying shears that are subject to relatively large impacts. The thickness of the arch can often meet the requirements of processing large-diameter countersunk holes inside them. For cold-rolled flying shears, since the thickness of the sheared strip is often less than 3mm, the shearing impact force is relatively small, and the thickness of the arch is generally less than 240mm. In this case, the technical solution requires additional increase in the design thickness of the arch. At the same time, there are certain requirements for the coaxiality and dimensional tolerance range of the three holes, which increases the difficulty of machining.

[0005] The high-speed strip slitting shear structure disclosed in Chinese utility model patent CN2796907Y is primarily designed for hot-rolled headless rolling. The arch is designed to be thick to resist shearing shock. This thick arch facilitates machining a concentric countersunk hole with a larger diameter than the tie rod hole inside the arch to accommodate a locating sleeve. However, for cold-rolled flying shears that shear thinner strips and experience less impact, the arch thickness is often much thinner than that of hot-rolled thick plate flying shears. This method of machining locating sleeve countersunk holes inside the arch requires additional arch thickness. Furthermore, the high concentricity of the concentric countersunk hole increases manufacturing costs. Furthermore, to achieve sufficient rigidity, the arch is divided into three parts, which also requires ensuring a sufficient diameter for the locating sleeve. This also requires a sufficiently thick arch, adding to the cost. Summary of the Invention

[0006] The purpose of the present invention is to provide a drum-type flying shear and a multi-axis frame to solve the technical problems of the existing drum-type flying shear in that the assembly is difficult and the manufacturing cost is high.

[0007] The above-mentioned purpose of the present invention can be achieved by adopting the following technical solutions:

[0008] The present invention provides a drum-type flying shear, comprising: a frame, an upper cutter shaft, a lower cutter shaft, an upper gear, and a lower gear; the frame comprises an upper connecting beam, a lower connecting beam, and at least two spaced-apart archways, wherein the at least two archways are respectively arranged on a transmission side and an operating side; the archways comprise an upper archway and a lower archway, the upper archway being fixedly connected to the top of the lower archway, and the upper archway on the transmission side is connected to the upper archway on the operating side via the upper connecting beam, and the lower archway on the transmission side is connected to the lower archway on the operating side via the lower connecting beam;

[0009] The upper cutter shaft is installed on the upper archway located on the transmission side and the upper archway located on the operating side, and the lower cutter shaft is installed on the lower archway located on the transmission side and the lower archway located on the operating side; the upper cutter shaft is connected to the upper scissors, and the lower cutter shaft is connected to the lower scissors; the upper gear is installed on the upper cutter shaft, and the lower gear is installed on the lower cutter shaft, and the upper gear is arranged on the outer side of the upper archway located on the transmission side, and the lower gear is arranged on the outer side of the lower archway located on the transmission side, and the upper gear is meshed with the lower gear.

[0010] In a preferred embodiment, the archway includes a locking mechanism, which includes a pull rod and a locking nut. The lower end of the pull rod is threadedly connected to the lower archway, and the locking nut is threadedly connected to the upper end of the pull rod and abuts against the upper archway.

[0011] In a preferred embodiment, the lower archway is provided with a longitudinal locking hole, in which a locking block is provided; the upper archway is provided with a first vertical hole, and the lower archway is provided with a second vertical hole, and the pull rod is provided in the first vertical hole, the second vertical hole and the locking hole and is screwed to the locking block.

[0012] In a preferred embodiment, the locking hole is a cylindrical hole, and the locking block is cylindrical and matches the locking hole.

[0013] In a preferred embodiment, the lower archway is provided with a limiting block, the limiting block has a positioning surface extending in the longitudinal direction, and the upper archway abuts against the positioning surface through the positioning block.

[0014] In a preferred embodiment, the positioning surface is arranged to be inclined relative to the axial direction of the upper cutter shaft, and the positioning block is in the shape of an inclined wedge adapted to the positioning surface.

[0015] In a preferred embodiment, the slope of the positioning surface relative to the axial direction of the upper cutter shaft is 1:100.

[0016] In a preferred embodiment, the upper arch is provided with a first circular arc groove, and the lower arch is provided with a second circular arc groove matching the first circular arc groove, and the first circular arc groove and the second circular arc groove are both perpendicular to the axial direction of the upper cutter shaft; the arch includes a round pin, and the round pin is provided in the first circular arc groove and the second circular arc groove.

[0017] In a preferred embodiment, the joint surface between the upper arch and the lower arch at least partially overlaps with the flying shear wire.

[0018] The present invention provides a multi-axis frame, which is applied to the above-mentioned drum-type flying shear. The multi-axis frame includes: an upper connecting beam, a lower connecting beam, and at least two spaced-apart archways, wherein the at least two archways are respectively arranged on a transmission side and an operating side; the archways include an upper archway and a lower archway, wherein the upper archway is fixed to the top of the lower archway, and the upper archway located on the transmission side is connected to the upper archway located on the operating side via the upper connecting beam, and the lower archway located on the transmission side is connected to the lower archway located on the operating side via the lower connecting beam;

[0019] The upper archway located on the transmission side and the upper archway located on the operating side are both provided with a first mounting hole for installing the upper cutter shaft, and the lower archway located on the transmission side and the lower archway located on the operating side are both provided with a second mounting hole for installing the lower cutter shaft.

[0020] The characteristics and advantages of the present invention are:

[0021] The frame of this drum-type flying shear ensures the concentricity of the corresponding bearing holes on the operating and transmission sides, as well as the parallelism of the upper and lower bearing holes, and helps to ensure the strength of the overall structure. This drum-type flying shear facilitates adjustment during assembly, reducing the risk of misoperation during the hot assembly of the helical gear and cutter shaft. It does not require additional thickness of the arch, and it reduces the difficulty of assembling the gear and cutter shaft, which helps to save manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic diagram of the drum-type flying shear provided by the present invention;

[0024] Figure 2 A schematic structural diagram of a frame in a drum-type flying shear provided by the present invention;

[0025] Figure 3 A schematic structural diagram of the archway in the drum-type flying shear provided by the present invention;

[0026] Figure 4 A schematic structural diagram of the lower archway in the drum-type flying shear provided by the present invention;

[0027] Figure 5 for Figure 4 A top view of

[0028] Figure 6 A schematic structural diagram of a locking block in a drum-type flying shear provided by the present invention;

[0029] Figure 7 A side view of a locking block in a drum-type flying shear provided by the present invention;

[0030] Figure 8 A front view of a positioning block in a drum-type flying shear provided by the present invention;

[0031] Figure 9 A side view of a positioning block in the drum-type flying shear provided by the present invention.

[0032] Description of Figure Numbers:

[0033] 11. Transmission side; 12. Operation side; 13. Strip running direction;

[0034] 21. Upper blade shaft; 22. Lower blade shaft; 23. Bearing;

[0035] 31. Upper gear; 32. Lower gear;

[0036] 40. Frame; 41. Upper connecting beam; 42. Lower connecting beam;

[0037] 50. Archway; 51. Bearing hole; 52. Joint surface;

[0038] 60. Upper archway; 61. First vertical hole; 62. First arc groove;

[0039] 70. Lower archway; 71. Locking hole; 72. Second vertical hole; 73. Second arc groove; 74. Limit block; 741. Positioning surface;

[0040] 80. Locking mechanism; 81. Pull rod; 82. Locking nut; 83. Locking block;

[0041] 91. Positioning block; 92. Pressing block;

[0042] 93. Round pin. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] Option 1

[0045] The present invention provides a drum type flying shear, such as Figure 1-Figure 3As shown, the drum flying shear includes: a frame 40, an upper cutter shaft 21, a lower cutter shaft 22, an upper gear 31 and a lower gear 32, the frame 40 includes an upper connecting beam 41, a lower connecting beam 42 and at least two spaced archways 50, at least two archways 50 are respectively arranged on the transmission side 11 and the operating side 12; the archway 50 includes an upper archway 60 and a lower archway 70, the upper archway 60 is fixed to the top of the lower archway 70, and the upper archway 60 located on the transmission side 11 is connected to the upper archway 60 located on the operating side 12 through the upper connecting beam 41, and the lower archway 70 located on the transmission side 11 is connected to the lower archway 70 located on the operating side 12. It is connected through the lower connecting beam 42; the upper cutter shaft 21 is installed on the upper arch 60 located on the transmission side 11 and the upper arch 60 located on the operating side 12, and the lower cutter shaft 22 is installed on the lower arch 70 located on the transmission side 11 and the lower arch 70 located on the operating side 12; the upper cutter shaft 21 is connected to the upper scissors, and the lower cutter shaft 22 is connected to the lower scissors; the upper gear 31 is installed on the upper cutter shaft 21, and the lower gear 32 is installed on the lower cutter shaft 22, and the upper gear 31 is arranged on the outer side of the upper arch 60 located on the transmission side 11, and the lower gear 32 is arranged on the outer side of the lower arch 70 located on the transmission side 11, and the upper gear 31 is engaged with the lower gear 32.

[0046] The frame 40 in the drum-type flying shear separates the archway 50 vertically. During manufacturing, the upper archway 60 of the operating side 12 and the upper archway 60 of the transmission side 11 are tightened by the upper connecting beam 41, and the lower archway 70 of the operating side 12 and the lower archway 70 of the transmission side 11 are tightened by the lower connecting beam 42, and the upper archway 60 and the lower archway 70 on the same side are fixed together; then, the bearing hole 51 for installing the upper cutter shaft 21 is processed on the upper archway 60, and the bearing hole 51 for installing the lower cutter shaft 22 is processed on the lower archway 70, so as to ensure the concentricity of the corresponding bearing holes 51 on the operating side 12 and the transmission side 11, and also to ensure the parallelism of the upper and lower bearing holes 51, and to ensure the strength of the overall structure.

[0047] During assembly, the lower cutter shaft 22, the lower gear 32, and the lower arches 70 on both sides can be assembled separately. The upper cutter shaft 21, the upper gear 31, and the upper arches 60 on both sides can also be assembled separately. The upper cutter shaft 21 is installed on the upper arch 60, and the lower cutter shaft 22 is installed on the lower arch 70. Then, the upper arch 60 and the lower arch 70 are assembled together with the upper cutter shaft 21, the lower cutter shaft 22, the upper gear 31, and the lower gear 32. If the upper gear 31 and the lower gear 32 are out of phase, the upper arch 60 and the lower arch 70 can be opened and the gear meshing position can be readjusted. If there is a deviation in the cutter shaft center distance, the upper and lower bearing hole 51 center distance, or the gear center distance, it can still be adjusted without scrapping the arch 50, thereby avoiding the risk of hot-fitting the helical gears in the meshing state and reducing the difficulty of assembly.

[0048] Unlike the solution of the integral arch structure which requires hot-installing the helical teeth while the gears are in meshing state, the drum-type flying shear is easy to adjust during assembly, reducing the risk of erroneous operation during the hot assembly process of the helical gears and the cutter shaft. It does not require additional increase in the thickness of the arch 50, and reduces the difficulty of assembling the gears and the cutter shaft, which is conducive to saving manufacturing costs.

[0049] The upper gear 31 and the lower gear 32 can be helical gears; the upper cutter shaft 21 is mounted on the upper arch 60 through the bearing 23, and the lower cutter shaft 22 is mounted on the lower arch 70 through the bearing 23, such as Figure 1 and Figure 2 As shown, the upper arch 60 and the lower arch 70 are respectively provided with bearing holes 51 for installing the bearing 23; the upper arch 60 and the lower arch 70 on the operating side 12 are independent forgings, and the upper arch 60 and the lower arch 70 on the transmission side 11 are also independent forgings, which eliminates the difficult assembly operation of the helical gear that needs to be pushed while rotating, and avoids the misalignment of the tooth top and tooth groove during the assembly of the upper cutter shaft 21, the lower cutter shaft 22 and the gear.

[0050] The joint surface 52 between the upper archway 60 and the lower archway 70 is parallel to the horizontal direction. The joint surface 52 can be set in the middle position of the two bearing holes 51. The joint surface 52 can also be set on the center line of the upper bearing hole 51 or the center line of the lower bearing hole 51. Furthermore, the height of the joint surface 52 between the upper archway 60 and the lower archway 70 is set at the midpoint of the line connecting the upper and lower bearing holes 51. The joint surface 52 between the upper archway 60 and the lower archway 70 at least partially overlaps with the flying shear wire, which ensures assembly accuracy and structural strength, reduces assembly difficulty, increases flexibility, and reduces manufacturing pressure.

[0051] like Figure 3 As shown, the archway 50 includes a locking mechanism 80, which includes a pull rod 81 and a locking nut 82. The lower end of the pull rod 81 is screwed to the lower archway 70, and the locking nut 82 is screwed to the upper end of the pull rod 81 and abuts against the upper archway 60. The pull rod 81 and the locking nut 82 apply a vertical force to the upper archway 60 and the lower archway 70, thereby locking the upper archway 60 and the lower archway 70.

[0052] Furthermore, the lower archway 70 is provided with a longitudinal locking hole 71, in which a locking block 83 is provided; the upper archway 60 is provided with a first vertical hole 61, and the lower archway 70 is provided with a second vertical hole 72. The pull rod 81 is provided in the first vertical hole 61, the second vertical hole 72 and the locking hole 71 and is screwed to the locking block 83. The locking block 83 is provided with a vertical threaded hole, and a pre-tightening force can be provided by tightening the pull rod 81. Figure 3 and Figure 4 As shown, the locking hole 71 is a cylindrical hole, and the locking block 83 is cylindrical and matched with the locking hole 71, which is convenient for manufacturing and assembly.

[0053] The horizontal direction of the frame 40 is the strip running direction 13. In some embodiments, the lower archway 70 is provided with a limit block 74, such as Figure 3-Figure 5 and Figure 8-Figure 9 As shown, the limit block 74 has a positioning surface 741 extending in the longitudinal direction, and the upper archway 60 is in contact with the positioning surface 741 through the positioning block 91, thereby realizing the lateral positioning of the upper archway 60 and the lower archway 70. By processing the limit block 74, a stop is formed to ensure the accuracy and strength of the connection between the upper archway 60 and the lower archway 70. Furthermore, the positioning surface 741 is tilted relative to the axial direction of the upper cutter shaft 21, and the positioning block 91 is in the shape of an oblique wedge that matches the positioning surface 741. Preferably, the inclination of the positioning surface 741 relative to the axial direction of the upper cutter shaft 21 is 1:100, realizing a good mechanical self-locking function. In addition, the use of a cylindrical locking block 83, a mechanical stop and an oblique wedge-shaped positioning block 91 will not increase the thickness of the archway 50, which is conducive to cost saving and has obvious advantages in shearing thin materials. The positioning surface 741 is finely ground to ensure that it fits securely, such as Figure 3 As shown, the upper archway 60 and the lower archway 70 are clamped by an oblique wedge-shaped positioning block 91; the large end of the positioning block 91 is provided with a clamping block 92, and the clamping block 92 is fixed to the lower archway 70 by bolts to clamp the positioning block 91 and prevent it from loosening.

[0054] In some embodiments, the upper arch 60 is provided with a first arc groove 62, and the lower arch 70 is provided with a second arc groove 73 that matches the first arc groove 62. The first arc groove 62 and the second arc groove 73 are both perpendicular to the axial direction of the upper cutter shaft 21; Figure 3 and Figure 5-Figure 7 As shown, the archway 50 includes a round pin 93, which is disposed in the first arc groove 62 and the second arc groove 73. The round pin 93 cooperates with the first arc groove 62 and the second arc groove 73 to achieve horizontal positioning of the upper archway 60 and the lower archway 70 perpendicular to the running direction of the strip, reducing the number of mating surfaces that require fine grinding and lowering manufacturing costs. Preferably, the round pin 93 is a cylindrical pin.

[0055] Figure 1-Figure 3In the illustrated drum-type flying shear frame 40, the positioned archways 50 on the operating side 12 and the transmission side 11 are fixed together into a single frame by upper and lower connecting beams 41 and 42. Thus, the integrally connected frame 40 is further machined with the bearing holes 51, which ensures both the coaxiality of the bearing holes 51 on both sides and the parallelism of the upper and lower bearing holes 51. When installing the cutter shaft, the frame 40 is opened, and the upper cutter shaft 21 can be directly installed in the bearing hole 51, and then the upper gear 31 is heat-fitted; the lower cutter shaft 22 can still be assembled independently with the upper and lower gears 32 in a non-meshing state. The lower cutter shaft 22 is placed in the bearing hole 51, and then the lower gear 32 is heat-fitted. The upper arch 60 and the lower arch 70 are then tightened with the pull rod 81 using a tensioner. If it is found that the meshing relationship of the upper and lower gears 32 and the phase relationship of the upper and lower cutter shaft slots are not correct, the pull rod 81 can be loosened, the upper arch 60 and the lower arch 70 can be loosened, and any cutter shaft can be directly rotated to adjust and readjust the meshing relationship of the upper and lower gears 32 and the phase relationship of the upper and lower cutter shaft slots. For example, the lower arch 70 can be loosened to disengage the meshing gears, and the lower cutter shaft 22 can be directly rotated for circumferential adjustment to correct the meshing relationship of the upper and lower teeth and the phase relationship of the cutter shaft 22 slots. If the center distance between the upper and lower cutter shafts 21 and 22 deviates, this can be adjusted by adding shims or fine-grinding the mating surfaces, without having to scrap the arch 50. This drum-type flying shear is suitable for cold rolling projects and has obvious advantages for shearing thin strip steel. It has the advantage of being easy to manufacture, avoiding the economic losses of remachining parts caused by improper gear hot assembly or deviation in the center distance of the cutter shaft bearing holes 51, and also reduces the time lost due to remachining.

[0056] Option 2

[0057] The present invention provides a multi-axis frame, which is applied to the above-mentioned drum-type flying shear, and the multi-axis frame includes: an upper connecting beam 41, a lower connecting beam 42 and at least two spaced-apart arches 50, at least two arches 50 are respectively arranged on the transmission side 11 and the operating side 12; the arches 50 include an upper archway 60 and a lower archway 70, the upper archway 60 is fixed to the top of the lower archway 70, and the upper archway 60 located on the transmission side 11 is connected to the upper archway 60 located on the operating side 12 through the upper connecting beam 41, and the lower archway 70 located on the transmission side 11 is connected to the lower archway 70 located on the operating side 12 through the lower connecting beam 42; the upper archway 60 located on the transmission side 11 and the upper archway 60 located on the operating side 12 are both provided with a bearing hole 51 for installing the upper cutter shaft 21, and the lower archway 70 located on the transmission side 11 and the lower archway 70 located on the operating side 12 are both provided with a bearing hole 51 for installing the lower cutter shaft 22.

[0058] This multi-axis frame has the structural characteristics and beneficial effects of the above-mentioned mechanism, which will not be described in detail here. This multi-axis frame is not limited to the situation where helical gears mesh with the cutter shaft in a drum-type flying shear and are thermally assembled; other mechanical equipment such as helical gears and shaft parts are thermally assembled and fixed to an integral bearing seat can also adopt this multi-axis frame.

[0059] For the scheme of machining the upper and lower cutter shaft bearing holes 51 simultaneously on a single arch, in order to ensure the control accuracy of the side clearance of the shear blades and the resistance to shear shock, the cutter shaft and the transmission gear are usually assembled using an interference fit or a small interference fit + key combination, which makes the installation of the helical gear pairs in the transmission meshing more difficult. For the scheme of dividing the arch into three parts to reduce the difficulty of the helical gear meshing assembly, the mating surfaces of the operating side 12 and the transmission side arch 50 need to be finely ground to eight surfaces, which is relatively high in processing and manufacturing costs. In addition, after the arch is divided into three parts, the arch thickness needs to be increased and positioning sleeves need to be added, which also increases the manufacturing cost. Different from these two schemes, the multi-axis frame provided by the present invention divides the archway into two, and uses a mechanical stop and an oblique wedge-shaped positioning block 91 to locate the main direction of the shear impact force, and the other direction is positioned by a round pin 93 and a first circular arc groove 62 and a second circular arc groove 73 to achieve horizontal positioning of the upper and lower archways; the operating side 12 and the transmission side 11 archways are tightened by the upper connecting beam 41 and the lower connecting beam 42 to ensure the overall rigidity of the frame 40; the height direction uses a pull rod 81 to tighten the upper archway 60 and the lower archway 70, which reduces the manufacturing cost and assembly difficulty, has higher flexibility, and reduces the manufacturing pressure.

[0060] The above descriptions are only several embodiments of the present invention. Those skilled in the art may make various changes or modifications to the embodiments of the present invention based on the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims

1. A drum-type flying shear, characterized in that: include: A frame, an upper cutter shaft, a lower cutter shaft, an upper gear, and a lower gear, wherein the frame includes an upper connecting beam, a lower connecting beam, and at least two spaced-apart archways, wherein the at least two archways are respectively arranged on the transmission side and the operation side; the archways include an upper archway and a lower archway, wherein the upper archway is fixedly connected to the top of the lower archway, and the upper archway on the transmission side is connected to the upper archway on the operation side via the upper connecting beam, and the lower archway on the transmission side is connected to the lower archway on the operation side via the lower connecting beam; The upper cutter shaft is installed on the upper archway located on the transmission side and the upper archway located on the operating side, and the lower cutter shaft is installed on the lower archway located on the transmission side and the lower archway located on the operating side; the upper cutter shaft is connected to an upper scissors, and the lower cutter shaft is connected to a lower scissors; the upper gear is installed on the upper cutter shaft, and the lower gear is installed on the lower cutter shaft, and the upper gear is arranged on the outer side of the upper archway located on the transmission side, and the lower gear is arranged on the outer side of the lower archway located on the transmission side, and the upper gear is meshed with the lower gear; The lower archway is provided with a limiting block, the limiting block has a positioning surface extending in the longitudinal direction, and the upper archway abuts against the positioning surface through the positioning block; The positioning surface is arranged to be tilted relative to the axial direction of the upper cutter shaft, and the positioning block is in the shape of an inclined wedge adapted to the positioning surface; The upper arch is provided with a first circular arc groove, and the lower arch is provided with a second circular arc groove matching the first circular arc groove, and the first circular arc groove and the second circular arc groove are both perpendicular to the axial direction of the upper cutter shaft; the arch includes a round pin, and the round pin is provided in the first circular arc groove and the second circular arc groove.

2. The drum flying shear according to claim 1, characterized in that: The archway includes a locking mechanism, which includes a pull rod and a locking nut. The lower end of the pull rod is screwed to the lower archway, and the locking nut is screwed to the upper end of the pull rod and abuts against the upper archway.

3. The drum flying shear according to claim 2, characterized in that: The lower arch is provided with a longitudinal locking hole, and a locking block is provided in the locking hole; the upper arch is provided with a first vertical hole, and the lower arch is provided with a second vertical hole. The pull rod is provided in the first vertical hole, the second vertical hole and the locking hole and is screwed to the locking block.

4. The drum flying shear according to claim 3, characterized in that: The locking hole is a cylindrical hole, and the locking block is cylindrical and matched with the locking hole.

5. The drum flying shear according to claim 1, characterized in that: The inclination of the positioning surface relative to the axial direction of the upper cutter shaft is 1:

100.

6. The drum flying shear according to claim 1, characterized in that: The joint surface of the upper arch and the lower arch at least partially overlaps with the flying shear wire.

7. A multi-axis frame, applied to the drum-type flying shear according to any one of claims 1 to 6, characterized in that: The multi-axis frame includes: an upper connecting beam, a lower connecting beam and at least two spaced archways, at least two of which are respectively arranged on the transmission side and the operation side; the archways include an upper archway and a lower archway, the upper archway is fixed to the top of the lower archway, and the upper archway on the transmission side is connected to the upper archway on the operation side by the upper connecting beam, and the lower archway on the transmission side is connected to the lower archway on the operation side by the lower connecting beam; The upper archway located on the transmission side and the upper archway located on the operating side are both provided with a first mounting hole for mounting an upper cutter shaft, and the lower archway located on the transmission side and the lower archway located on the operating side are both provided with a second mounting hole for mounting a lower cutter shaft; The lower archway is provided with a limiting block, the limiting block has a positioning surface extending in the longitudinal direction, and the upper archway abuts against the positioning surface through the positioning block; The positioning surface is arranged to be tilted relative to the axial direction of the upper cutter shaft, and the positioning block is in the shape of an inclined wedge adapted to the positioning surface; The upper arch is provided with a first circular arc groove, and the lower arch is provided with a second circular arc groove matching the first circular arc groove, and the first circular arc groove and the second circular arc groove are both perpendicular to the axial direction of the upper cutter shaft; the arch includes a round pin, and the round pin is provided in the first circular arc groove and the second circular arc groove.

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