Strip edge cutting device and adjusting method thereof

Abstract

The invention discloses a strip trimming device and an adjusting method thereof.The strip trimming device comprises a driving unit, a rack and linear guide rails, the two linear guide rails are horizontally arranged on the rack in parallel and are perpendicular to the conveying direction of trimmed strips, and the bottom of a cutter shaft frame is connected to the linear guide rails in a guiding and sliding mode through sliding blocks; an upper cutter shaft and a lower cutter shaft are rotatably erected on the cutter shaft frame, and an upper cutter head group and a lower cutter head group are respectively mounted at the front ends of the upper cutter shaft and the lower cutter shaft; the driving unit is mounted on the cutter shaft frame and outputs power to drive the upper cutter shaft and the lower cutter shaft; the upper cutter shaft is coaxially and rotatably installed in an inner hole of the bearing sleeve, the two ends of the bearing sleeve are slidably connected into installation holes in the front side wall and the rear side wall of the cutter shaft frame, and an annular groove is formed in the middle of the outer wall of the bearing sleeve. The working end of the stirring assembly stretches into the annular groove and can stir the bearing sleeve to move front and back. The shifting shaft is used for shifting the bearing sleeve to achieve left-right movement of the upper cutter shaft so as to adjust the backlash between the cutting discs, operation is convenient, and time and labor are saved.

Description

Technical Field

[0001] The invention relates to the technical field of metal plate and strip production, and in particular to a strip trimming device and an adjustment method thereof. Background Art

[0002] Disc shears are indispensable trimming equipment for plate and strip production workshops and are widely used in plate and strip production workshops. The two upper and lower blades of this shearing machine are made into disc shapes. When shearing, the two disc knives make circular motion relative to the continuously produced and transported metal strips, thereby forming a pair of continuous shearing blades without breakpoints.

[0003] The disc shearing equipment working online often causes the disc cutter to wear out due to long-term continuous work, and the side clearance between the upper and lower disc cutters becomes larger, which leads to poor cutting effect of the plate and strip, and is prone to edge warping and burrs. Moreover, after the thickness specifications of the plates and strips produced on the production line change, the side clearance between the disc cutters also needs to be adjusted adaptively in time to better complete the cutting operation. The existing method of adjusting the side clearance is often to install axially spaced gaskets at the installation position of a disc cutter, that is, to adjust the thickness of the axial gasket to adjust the side clearance between the disc cutters. This is time-consuming and labor-intensive, and requires operators to have a high level of skills and rich operating experience to efficiently complete the side clearance adjustment.

[0004] In order to overcome the above problems, a strip trimming device and an adjustment method thereof are needed. Summary of the invention

[0005] The purpose of the present invention is to provide a strip trimming device and an adjustment method thereof, which adopts a shifting shaft to shift a bearing sleeve to realize the left and right movement of an upper cutter shaft and thus complete the side clearance adjustment between disc cutters, is easy to operate, and saves time and effort.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The present invention discloses a strip trimming device, which is applied to a metal strip production line and comprises a driving unit and a frame, and further comprises:

[0008] Linear guide rails, two of which are arranged horizontally and parallelly on the frame and perpendicular to the conveying direction of the trimmed strip, the bottom of the knife shaft frame is slidably connected to the linear guide rails through a plurality of slide blocks; the knife shaft frame can rotatably mount an upper knife shaft and a lower knife shaft, and the upper knife shaft and the lower knife shaft are respectively installed with an upper knife disc group and a lower knife disc group facing one end of the strip; the driving unit is installed on the knife shaft frame and outputs power to drive the upper knife shaft and the lower knife shaft to rotate in opposite directions;

[0009] A bearing sleeve, wherein the upper cutter shaft is coaxially rotatably mounted in the inner hole of the bearing sleeve, both ends of the bearing sleeve are slidably connected to the mounting holes of the front and rear side walls of the cutter shaft frame, and an annular groove is provided in the middle of the outer wall of the bearing sleeve;

[0010] The toggle assembly is mounted on the top plate of the knife shaft frame. The working end of the toggle assembly penetrates into the annular groove and can toggle the bearing sleeve to move forward and backward.

[0011] Furthermore, a horizontal base plate is provided at the bottom of the tool shaft frame, and the bottom surface of the base plate is connected to the linear guide rail through a plurality of sliding blocks; the drive unit is installed on the base plate and is located behind the tool shaft frame, and the drive unit is connected to the upper tool shaft input end through a retractable universal coupling.

[0012] Furthermore, the toggle assembly includes a first reduction motor and a toggle shaft, the first reduction motor is mounted on the top plate of the knife shaft frame, the top end of the vertically arranged toggle shaft is inserted into the output sleeve of the first reduction motor, and the bottom end of the toggle shaft is an integrally formed eccentric shaft head, and the eccentric shaft head extends into the annular groove.

[0013] Furthermore, the toggle assembly also includes an eccentric sleeve, which includes a flange plate on the top and a sleeve portion on the bottom, and the flange plate and the sleeve portion are coaxially arranged; the flange plate is connected between the top plate of the knife shaft frame and the bottom surface of the first reduction motor; a toggle shaft hole is vertically opened on the eccentric sleeve, and the toggle shaft is coaxially installed in the toggle shaft hole, and the toggle shaft hole and the axis line of the sleeve portion are arranged parallel and separately; a plurality of bolt mounting holes evenly distributed around the circumference are opened on the flange plate, and the mounting holes are long arc holes.

[0014] Furthermore, the toggle assembly also includes a bushing and a wear-resistant sleeve, the bushing is coaxially installed in the bushing hole section at the bottom end of the toggle shaft hole, and the inner hole of the bushing is gap-matched with the outer wall of the toggle shaft; the wear-resistant sleeve is sleeved on the eccentric shaft head, and the outer diameter of the wear-resistant sleeve is adapted to the width of the annular groove.

[0015] Furthermore, an outer oil groove is formed on the flange plate, an inner oil groove is formed in the center of the lower middle portion of the shift shaft, and the outer oil groove and the inner oil groove are connected to the gap between the inner hole of the bushing and the outer wall of the shift shaft.

[0016] Furthermore, a plurality of grease grooves are circumferentially provided on the outer wall of the bearing sleeve and the matching walls of the mounting holes of the front and rear side walls of the cutter shaft frame, and an oil passage for replenishing grease to the grease grooves is provided on the cutter shaft frame.

[0017] Furthermore, the axis line of the bearing seat of the upper knife shaft bearing installed on the inner hole of the bearing sleeve and the axis line of the mating wall of the grease groove are arranged parallel and separately; the rear end of the bearing sleeve is provided with a circumferential drive component for driving the bearing sleeve to rotate.

[0018] Furthermore, the circumferential drive assembly includes a driven gear and a second reduction motor, and the annular driven gear is coaxially assembled on the rear end surface of the bearing sleeve; the second reduction motor is installed on the rear side wall of the knife shaft frame, and the output shaft of the second reduction motor is installed with a driving gear, and the driving gear is meshed with the driven gear.

[0019] The present invention also discloses a method for adjusting a strip trimming device. The strip trimming device described in any one of the above is used to trim the strip, and the side clearance between the upper disc cutter and the lower disc cutter can be adjusted.

[0020] Compared with the prior art, the beneficial technical effects of the present invention are:

[0021] The strip trimming device of the present invention is provided with the toggle assembly, and the working end of the toggle assembly is inserted into the annular groove and the bearing sleeve is moved forward and backward to achieve the forward and backward movement of the bearing sleeve, thereby driving the forward and backward movement of the upper cutter shaft and the upper cutter disc assembly, and finally deforming into the side clearance adjustment between the upper disc cutter and the lower disc cutter. By adding the bearing sleeve, the forward and backward movement of the upper cutter shaft can be achieved without damaging the upper cutter shaft. The strip trimming device of the present invention uses a toggle shaft to toggle the bearing sleeve to achieve the left and right movement of the upper cutter shaft and thus complete the side clearance adjustment between the disc cutters. Compared with the method of adjusting the cutter shaft gasket, the operation is more convenient and saves time and effort.

[0022] In addition, the drive unit and the upper cutter shaft connected by the telescopic universal coupling transmission will not affect the forward and backward movement of the upper cutter shaft. The two sets of spacers and gaskets are respectively arranged on the front and rear sides of the upper disc cutter, and the lower cutter disc group and the upper cutter disc group have the same structure, which can ensure that the edge of the strip is effectively supported when the strip is sheared and cut by the disc cutter to avoid curling. By setting an eccentric shaft head as the part of the toggle shaft that penetrates into the ring groove, the eccentric shaft head can be deflected while the first reduction motor drives the toggle shaft to rotate, thereby driving the bearing sleeve to move forward and backward. By adding an eccentric shaft sleeve, on the one hand, the toggle shaft is supported to prevent it from bending and breaking. On the other hand, when the deflection range of the eccentric shaft head is not enough to adjust the side clearance of the disc cutter, the eccentric shaft sleeve can be rotated and reinstalled to expand the side clearance adjustment range, thereby ensuring strong adaptability. By setting the bushing, the bottom end of the toggle shaft can be effectively supported, and the bending resistance of the toggle shaft during operation can be increased; by setting the wear-resistant sleeve, the friction with the ring groove is improved, the wear is reduced, and it is easy to maintain and replace. By setting the locking wire hole and the locking top wire, the bushing is prevented from rotating relative to each other in the bushing hole section. By setting the outer oil groove and the inner oil groove, lubricating grease can be added to the gap between the inner hole of the bushing and the outer wall of the toggle shaft to avoid serious wear caused by dry friction. By setting the lubricating grease groove on the outer wall of the bearing sleeve, dry friction between the bearing sleeve and the side wall mounting hole of the knife shaft frame can be avoided, which is convenient for sliding forward and backward and circumferential rotation. By setting the bearing sleeve as an eccentric bearing sleeve, the bearing sleeve is driven by the circumferential drive assembly to rotate, which drives the upper knife shaft to move up and down, so that the axial spacing between the upper knife shaft and the lower knife shaft changes, and the overlapping size of the upper disc knife and the lower disc knife changes, which can adapt to the cutting of strips of different thicknesses and achieve better trimming effect. The arrangement of the moving gear and the second reduction motor facilitates the electronic control of the overlapping size of the disc cutter. The arrangement of the displacement sensor and the measuring plate enables the adjustment amount to be directly observed from the operation interface when adjusting the side clearance between the upper disc cutter and the lower disc cutter, thereby making the adjustment highly controllable.

[0023] The strip trimming device adjustment method of the present invention supports the upper cutter shaft by arranging a floating bearing sleeve, and the bearing sleeve can move forward and backward and rotate to realize the upper and lower translation of the upper cutter shaft, thereby realizing the dual adjustment of the disc cutter side clearance and the overlap amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the front cross-sectional structure of the strip trimming device of the present invention;

[0026] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the installation parts of the upper and lower knife shafts;

[0027] Figure 3 for Figure 2 A top view of the structure and a cross-sectional view at AA;

[0028] Figure 4 It is a schematic diagram of the main cross-sectional structure of the bearing sleeve in the present invention;

[0029] Figure 5 It is a schematic diagram of the main structure of the shifting shaft in the present invention;

[0030] Figure 6 It is a schematic diagram of the front and cross-sectional structure of the eccentric shaft cylinder in the present invention;

[0031] Figure 7 for Figure 6 Schematic diagram of the structure viewed from above.

[0032] Description of reference numerals: 1, linear guide rail; 2, slider; 3, knife shaft frame; 301, bottom plate; 4, upper knife shaft; 5, bearing sleeve; 501, ring groove; 502, bearing seat; 503, grease groove; 6, first reduction motor; 7, toggle shaft; 701, inner oil groove; 702, eccentric shaft head; 8, eccentric sleeve; 801, toggle shaft hole; 802, bushing hole section; 803, sealing groove; 804, Mounting holes; 805, external oil channel; 806, locking screw hole; 9, upper cutter disc assembly; 901, upper disc cutter; 902, spacer sleeve; 903, washer sleeve; 10, lower cutter shaft; 11, lower cutter disc assembly; 12, driven gear; 13, second reduction motor; 14, bushing; 15, wear-resistant sleeve; 16, connector; 17, displacement sensor support; 18, displacement sensor; 19, measuring plate; 20, guide wheel. DETAILED DESCRIPTION

[0033] The core of the present invention is to provide a strip trimming device and an adjustment method thereof, which adopts a shifting shaft to shift the bearing sleeve to realize the left and right movement of the upper knife shaft and thus complete the side clearance adjustment between the disc knives, which is easy to operate and saves time and effort.

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 a limitation on the present invention.

[0036] With reference to the accompanying drawings, Figure 1 It is a schematic diagram of the front cross-sectional structure of the strip trimming device of the present invention; Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the installation parts of the upper and lower knife shafts; Figure 3 for Figure 2 A top view of the structure and a cross-sectional view at AA; Figure 4 It is a schematic diagram of the main cross-sectional structure of the bearing sleeve in the present invention; Figure 5 It is a schematic diagram of the main structure of the shifting shaft in the present invention; Figure 6 It is a schematic diagram of the front and cross-sectional structure of the eccentric shaft cylinder in the present invention; Figure 7 for Figure 6 Schematic diagram of the structure viewed from above.

[0037] In a specific embodiment, Figures 1 to 7 As shown, the strip trimming device of the present invention is applied to a metal strip production line, and can trim the strip edge online to facilitate neat winding. The strip trimming device of the present invention comprises a drive unit and a frame, and the drive unit can adopt a reduction motor or a hydraulic motor. The important difference from the existing disc shears is that the strip trimming device of the present invention also includes:

[0038] Linear guide rails 1, two linear guide rails 1 are arranged horizontally and parallelly on the frame and perpendicular to the conveying direction of the trimmed strip. The bottom of the knife shaft frame 3 is connected to the linear guide rails 1 through a plurality of sliders 2. The sliders 2 are ball sliders with low friction resistance. A locking structure or a limiting mechanism is also arranged between the knife shaft frame 3 and the frame. For example, a hydraulic cylinder is used to control the front and rear position of the knife shaft frame 3 on the linear guide rail 1. The knife shaft frame 3 can rotatably mount an upper knife shaft 4 and a lower knife shaft 10. The upper knife shaft 4 and the lower knife shaft 10 are respectively installed with an upper knife disc group 9 and a lower knife disc group 11 toward one end of the strip. The knife shaft is positioned toward one end of the trimmed strip as the front end. The driving unit is installed on the knife shaft frame 3 and outputs power to drive the upper knife shaft 4 and the lower knife shaft 10 to rotate in the opposite direction. The upper knife disc group 9 includes an upper disc knife 901, and the lower knife disc group 11 includes a lower disc knife. The upper disc knife 901 and the lower disc knife rotate to shear the edge of the strip.

[0039] The bearing sleeve 5 and the upper knife shaft 4 are coaxially rotatably installed in the inner hole of the bearing sleeve 5. The two ends of the bearing sleeve 5 are slidably connected to the mounting holes of the front and rear side walls of the knife shaft frame 3. An annular groove 501 is opened in the middle of the outer wall of the bearing sleeve 5.

[0040] The toggle assembly is mounted on the top plate of the cutter shaft frame 3 , and the working end of the toggle assembly is inserted into the annular groove 501 and can toggle the bearing sleeve 5 to move forward and backward.

[0041] By adding the toggle assembly, the working end of the toggle assembly is inserted into the annular groove 501 and the bearing sleeve 5 is moved forward and backward to realize the forward and backward movement of the bearing sleeve 5, thereby driving the forward and backward movement of the upper cutter shaft 4 and the upper cutter disc assembly 9, and finally deforming into the side clearance adjustment between the upper disc cutter 901 and the lower disc cutter. By adding the bearing sleeve 5, the forward and backward movement of the upper cutter shaft 4 can be realized without damaging the upper cutter shaft 4. The strip trimming device of the present invention adopts a toggle shaft to toggle the bearing sleeve to realize the left and right movement of the upper cutter shaft and then complete the side clearance adjustment between the disc cutters. Compared with the method of adjusting the cutter shaft gasket, the operation is more convenient, saving time and effort.

[0042] In a specific embodiment of the present invention, Figure 1 and Figure 2 As shown, a horizontal bottom plate 301 is provided at the bottom of the knife shaft frame 3, and the bottom surface of the bottom plate 301 is connected to the linear guide rail 1 through a plurality of sliders 2. The driving unit is installed on the bottom plate 301 and is located behind the knife shaft frame 3. The driving unit is connected to the input end of the upper knife shaft 4 through a retractable universal coupling. That is, the retractable universal coupling is connected to the rear end of the upper knife shaft 4 through a connector 16. Similarly, a set of the driving unit is also provided at the rear end of the lower knife shaft 10 for separate driving.

[0043] The driving unit and the upper cutter shaft 4 are connected by the telescopic universal coupling, which will not affect the forward and backward movement of the upper cutter shaft 4.

[0044] In a specific embodiment of the present invention, Figure 2 and Figure 3 As shown, the upper cutter disc assembly 9 also includes a set of spacer sleeves 902 and gasket sleeves 903, and the two sets of spacer sleeves 902 and gasket sleeves 903 are coaxially mounted on the shaft ends of the upper cutter shaft 4 and are respectively located on the front and rear sides of the upper disc cutter 901. The spacer sleeve 902 is coaxially sleeved on the shaft end of the upper cutter shaft 4 and the two are connected by a flat key, and the gasket sleeve 903 is coaxially compounded on the outer wall of the spacer sleeve 902, and the gasket sleeve 903 is made of rubber or nylon. Similarly, the lower cutter disc assembly 11 and the upper cutter disc assembly 9 have the same structure.

[0045] By using two sets of spacer sleeves 902 and gasket sleeves 903 to pad the front and rear sides of the upper disc knife 901 respectively, the lower cutter disc group 11 and the upper cutter disc group 9 have the same structure, which can ensure that when the strip is sheared by the disc knife, the edge of the strip is effectively supported to avoid curling.

[0046] In a specific embodiment of the present invention, Figures 1 to 5 As shown, the toggle assembly includes a first reduction motor 6 and a toggle shaft 7. The first reduction motor 6 is mounted on the top plate of the knife shaft frame 3, the top end of the vertically arranged toggle shaft 7 is inserted into the output sleeve of the first reduction motor 6, and the bottom end of the toggle shaft 7 is an integrally formed eccentric shaft head 702, which is inserted into the annular groove 501. In other words, the axis centerline of the eccentric shaft head 702 and the main axis centerline of the toggle shaft 7 are arranged parallel and separately.

[0047] By configuring the eccentric shaft head 702 as the part of the shifting shaft 7 that is inserted into the annular groove 501 , the eccentric shaft head 702 can be swung while the first reduction motor 6 drives the shifting shaft 7 to rotate, thereby driving the bearing sleeve 5 to move forward and backward.

[0048] Specifically, if Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the toggle assembly also includes an eccentric sleeve 8, and the eccentric sleeve 8 includes a flange plate at the top and a sleeve portion at the bottom, and the flange plate and the sleeve portion are coaxially arranged. The flange plate is connected between the top plate of the knife shaft frame 3 and the bottom surface of the first reduction motor 6, and the flange plate is horizontally cushioned. A toggle shaft hole 801 is vertically opened on the eccentric sleeve 8, and the toggle shaft 7 is coaxially installed in the toggle shaft hole 801, and the toggle shaft hole 801 and the axis center line of the sleeve portion are parallel and separated. A plurality of bolt mounting holes 804 evenly distributed around the circumference are opened on the flange plate, and the mounting holes 804 are long arc holes, and the center of the long arc holes coincides with the axis center line of the sleeve portion at the bottom of the eccentric sleeve 8. Bolts pass through the mounting holes 804 from top to bottom to fix the flange plate to the top plate of the knife shaft frame 3.

[0049] By adding the eccentric sleeve 8, on the one hand, the driving shaft 7 is supported to prevent it from bending and breaking; on the other hand, when the swing range of the eccentric shaft head 702 is not sufficient to adjust the side clearance of the disc cutter, the eccentric sleeve 8 can be rotated and reinstalled to expand the side clearance adjustment range, thereby ensuring strong adaptability.

[0050] Specifically, if Figure 2 , Figure 5 and Figure 6As shown, the toggle assembly also includes a bushing 14 and a wear-resistant sleeve 15. The bushing 14 is coaxially mounted on the bushing hole section 802 at the bottom end of the toggle shaft hole 801, and the inner hole of the bushing 14 is clearance-matched with the outer wall of the toggle shaft 7. The wear-resistant sleeve 15 is sleeved on the eccentric shaft head 702, and the outer diameter of the wear-resistant sleeve 15 is adapted to the width of the annular groove 501. Specifically, the bushing 14 is made of a tin bronze sleeve, and the wear-resistant sleeve 15 is made of a cast iron sleeve.

[0051] Specifically, if Figures 5 to 7 As shown, a locking wire hole 806 is provided at the bottom end of the inner wall of the bushing 14 and the bushing hole section 802, and a locking top screw is installed in the locking wire hole 806.

[0052] The bushing 14 can effectively support the bottom end of the toggle shaft 7 and increase the bending resistance of the toggle shaft 7 during operation; the wear-resistant sleeve 15 can improve the friction with the annular groove 501, reduce wear, and facilitate maintenance and replacement. The locking screw hole 806 and the locking top screw can prevent the bushing 14 from rotating relative to the bushing hole section 802.

[0053] Specifically, if Figure 2 , Figure 5 and Figure 6 As shown, an outer oil groove 805 is formed on the flange plate, an inner oil groove 701 is formed in the middle of the lower middle portion of the toggle shaft 7, and the outer oil groove 805 and the inner oil groove 701 are connected to the gap between the inner hole of the bushing 14 and the outer wall of the toggle shaft 7. At the connection between the outer oil groove 805 and the inner oil groove 701, two sealing grooves 803 are formed on the inner wall of the toggle shaft hole 801 and a sealing ring is installed.

[0054] By providing the outer oil channel 805 and the inner oil channel 701 , lubricating grease can be added to the gap between the inner hole of the bushing 14 and the outer wall of the shifting shaft 7 to avoid serious wear caused by dry friction.

[0055] In a specific embodiment of the present invention, Figures 1 to 4 As shown, a plurality of grease grooves 503 are provided on the outer wall of the bearing sleeve 5 and the circumference of the matching wall of the mounting holes of the front and rear side walls of the knife shaft frame 3, and an oil passage for replenishing grease to the grease grooves 503 is provided on the knife shaft frame 3. Two adjacent grease grooves 503 are connected.

[0056] By arranging the lubricating grease groove 503 on the outer wall of the bearing sleeve 5, dry friction between the bearing sleeve 5 and the mounting hole of the side wall of the knife shaft frame 3 can be avoided, so that the front and rear sliding and circumferential rotation can be realized.

[0057] In a specific embodiment of the present invention, Figures 1 to 4As shown, the axis of the bearing position 502 of the upper cutter shaft 4 bearing installed on the inner hole of the bearing sleeve 5 is parallel to the axis of the matching wall at the grease groove 503. In other words, the bearing sleeve 5 is an eccentric bearing sleeve. The rear end of the bearing sleeve 5 is provided with a circumferential drive assembly for driving the bearing sleeve 5 to rotate.

[0058] Specifically, the circumferential drive assembly includes a driven gear 12 and a second reduction motor 13. The annular driven gear 12 is coaxially mounted on the rear end surface of the bearing sleeve 5. The second reduction motor 13 is mounted on the rear side wall of the knife shaft frame 3. The output shaft of the second reduction motor 13 is mounted with a driving gear, and the driving gear is meshed with the driven gear 12 in an open manner.

[0059] By setting the bearing sleeve 5 as an eccentric bearing sleeve, the bearing sleeve 5 drives the upper cutter shaft 4 to move up and down during the rotation of the circumferential drive assembly, so that the axis spacing between the upper cutter shaft 4 and the lower cutter shaft 10 changes, and the overlapping size of the upper disc cutter 901 and the lower disc cutter changes, which can adapt to the cutting of strips of different thicknesses and achieve a better trimming effect. The arrangement of the moving gear 12 and the second reduction motor 13 facilitates the electronic control to adjust the overlapping size of the disc cutters.

[0060] In a specific embodiment of the present invention, Figure 3 As shown, the strip trimming device of the present invention further includes a displacement sensor 18 and a measuring plate 19. The measuring plate 19 is bolted to the shoulder at the front end of the upper cutter shaft 4 and is parallel to the rear of the upper cutter disc group 9. The displacement sensor 18 is mounted on the front side wall of the cutter shaft frame 3 through the displacement sensor support 17, and the contact of the displacement sensor 18 contacts the front side of the measuring plate 19. The displacement sensor 18 is electrically connected to the device controller, and the adjustment amount can be observed from the human-computer interaction operation interface. When the displacement sensor 18 is not in use, the measuring rod of the displacement sensor 18 can be pulled back to not contact the front side of the measuring plate 19.

[0061] By providing the displacement sensor 18 and the measuring plate 19, when adjusting the side clearance between the upper disc cutter 901 and the lower disc cutter, the adjustment amount can be directly observed from the operation interface, so that the adjustment is highly controllable.

[0062] In a specific embodiment of the present invention, Figure 3 As shown, the strip trimming device of the present invention further includes a guide wheel 20, which is disposed at the front end of the bottom plate 301. The guide wheel 20 is located below the lower cutter disc assembly 11 to guide the cut edge scraps.

[0063] The working principle of the strip trimming device of the present invention is as follows: during normal operation, the two sets of the driving units drive the upper cutter shaft 4 and the lower cutter shaft 10 respectively, so that the upper cutter shaft 4 and the lower cutter shaft 10 rotate in opposite directions, and the upper disc cutter 901 and the lower disc cutter rotating in opposite directions shear the edge of the strip conveyed on the production line. The cut edge scraps are guided downward by the guide wheel 20 to the waste winding roller. When the upper disc cutter 901 and the lower disc cutter are worn after long-term use, resulting in a larger side clearance, or when the thickness specifications of the produced metal strip change, the side clearance needs to be adjusted to a reasonable range accordingly. Before adjustment, the measuring plate 19 is located behind the contact of the displacement sensor 18, and the two are in good contact, and the reading is recorded. The control panel of the control device is operated, the first reduction motor 6 is started, driving the toggle shaft 7 to rotate, and the eccentric shaft head 702 deflects and drives the bearing sleeve 5 to move forward and backward, thereby realizing the movement of the upper disc cutter 901 relative to the lower disc cutter. Observe the change in the reading of the displacement sensor 18 until the adjustment amount is met. If the side clearance adjustment direction is opposite, control the first reduction motor 6 to reverse. When the swing range of the eccentric shaft head 702 is not enough to adjust the side clearance of the disc cutter, remove the bolts on the eccentric sleeve 8, and reinstall the eccentric sleeve 8 by slightly rotating it to expand the side clearance adjustment range, ensuring strong adaptability. When the overlapping size of the upper disc cutter 901 and the lower disc cutter needs to be adjusted, operate the control panel of the equipment, start the second reduction motor 13, and the driving gear drives the driven gear 12 to rotate. During the driven rotation of the bearing sleeve 5, the upper cutter shaft 4 is driven to move up and down, so that the axial spacing between the upper cutter shaft 4 and the lower cutter shaft 10 changes, and observe the overlap between the upper disc cutter 901 and the lower disc cutter until the requirements are met. After the side clearance and the disc cutter overlap meet the set requirements, the machine can be turned on for online trimming operations.

[0064] In summary, the strip trimming device of the present invention, by adding the toggle assembly, the working end of the toggle assembly is inserted into the annular groove 501 and the bearing sleeve 5 is moved forward and backward to realize the forward and backward movement of the bearing sleeve 5, thereby driving the forward and backward movement of the upper cutter shaft 4 and the upper cutter disc group 9, and finally deforming into the side clearance adjustment between the upper disc cutter 901 and the lower disc cutter. By adding the bearing sleeve 5, the forward and backward movement of the upper cutter shaft 4 can be realized without damaging the upper cutter shaft 4. The strip trimming device of the present invention adopts a toggle shaft to toggle the bearing sleeve to realize the left and right movement of the upper cutter shaft and then complete the side clearance adjustment between the disc cutters. Compared with the method of adjusting the cutter shaft gasket, the operation is more convenient, time-saving and labor-saving. In addition, the drive unit and the upper cutter shaft 4 connected by the telescopic universal coupling will not affect the forward and backward movement of the upper cutter shaft 4. By using two sets of spacer sleeves 902 and washer sleeves 903 to be respectively placed on the front and rear sides of the upper disc cutter 901, the lower cutter disc group 11 and the upper cutter disc group 9 have the same structure, which can ensure that when the strip is sheared and cut by the disc cutter, the edge of the strip is effectively supported to avoid curling. By setting the eccentric shaft head 702 as the part of the toggle shaft 7 that is inserted into the annular groove 501, the eccentric shaft head 702 can be deflected while the first reduction motor 6 drives the toggle shaft 7 to rotate, thereby driving the bearing sleeve 5 to move forward and backward. By adding the eccentric shaft sleeve 8, on the one hand, the toggle shaft 7 is supported to prevent it from bending and breaking. On the other hand, when the deflection range of the eccentric shaft head 702 is not enough to adjust the side clearance of the disc cutter, the eccentric shaft sleeve 8 can be rotated and reinstalled to expand the side clearance adjustment range, thereby ensuring strong adaptability. By setting the bushing 14, the bottom end of the toggle shaft 7 can be effectively supported, and the bending resistance of the toggle shaft 7 during operation can be increased; by setting the wear-resistant sleeve 15, the friction with the annular groove 501 is improved, the wear is reduced, and it is easy to maintain and replace. By setting the locking wire hole 806 and the locking top wire, the bushing 14 is prevented from rotating relative to each other in the bushing hole section 802. By setting the outer oil groove 805 and the inner oil groove 701, the gap between the inner hole of the bushing 14 and the outer wall of the toggle shaft 7 can be filled with lubricating grease to avoid dry friction and serious wear. By setting the lubricating grease groove 503 on the outer wall of the bearing sleeve 5, dry friction between the bearing sleeve 5 and the side wall mounting hole of the knife shaft frame 3 can be avoided, which facilitates the realization of forward and backward sliding and circumferential rotation. By setting the bearing sleeve 5 as an eccentric bearing sleeve, the bearing sleeve 5 drives the upper cutter shaft 4 to move up and down during the rotation of the circumferential drive assembly, so that the axis spacing between the upper cutter shaft 4 and the lower cutter shaft 10 changes, and the overlapping size of the upper disc cutter 901 and the lower disc cutter changes, which can adapt to the cutting of strips of different thicknesses and achieve a better trimming effect. The arrangement of the movable gear 12 and the second reduction motor 13 facilitates the electronic control of the overlapping size of the disc cutter. The arrangement of the displacement sensor 18 and the measuring plate 19 allows the adjustment amount to be directly observed from the operation interface when adjusting the side clearance between the upper disc cutter 901 and the lower disc cutter, so that the adjustment is highly controllable.

[0065] The present invention also discloses a method for adjusting a strip trimming device, by using the strip trimming device described in any one of the above embodiments to trim the strip, the side clearance between the upper disc cutter and the lower disc cutter can be adjusted.

[0066] The upper cutter shaft is supported by setting a floating bearing sleeve, which can move forward and backward as well as rotate to achieve the up and down translation of the upper cutter shaft, thereby realizing the dual adjustment of the disc cutter side clearance and overlap amount.

[0067] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0068] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A strip trimming device, used in a metal strip production line, comprising a drive unit and a frame, characterized in that: Also includes: A linear guide rail (1), wherein two linear guide rails (1) are horizontally and parallelly arranged on the frame and perpendicular to the conveying direction of the trimmed strip, and the bottom of the knife shaft frame (3) is slidably connected to the linear guide rail (1) through a plurality of slide blocks (2); the knife shaft frame (3) can rotatably mount an upper knife shaft (4) and a lower knife shaft (10), and the upper knife shaft (4) and the lower knife shaft (10) are respectively mounted with an upper knife disc group (9) and a lower knife disc group (11) facing one end of the strip; the driving unit is mounted on the knife shaft frame (3) and outputs power to drive the upper knife shaft (4) and the lower knife shaft (10) to rotate in opposite directions; A bearing sleeve (5), wherein the upper cutter shaft (4) is coaxially rotatably mounted in the inner hole of the bearing sleeve (5), the two ends of the bearing sleeve (5) are slidably connected to the mounting holes on the front and rear side walls of the cutter shaft frame (3), and an annular groove (501) is provided in the middle of the outer wall of the bearing sleeve (5); A toggle assembly is mounted on the top plate of the knife shaft frame (3); a working end of the toggle assembly penetrates into the annular groove (501) and is capable of toggling the bearing sleeve (5) to move forward and backward.

2. The strip trimming device according to claim 1, characterized in that: A horizontal base plate (301) is arranged at the bottom of the knife shaft frame (3), and the bottom surface of the base plate (301) is connected to the linear guide rail (1) via a plurality of slide blocks (2); the drive unit is mounted on the base plate (301) and is located behind the knife shaft frame (3), and the drive unit is connected to the input end of the upper knife shaft (4) via a telescopic universal coupling.

3. The strip trimming device according to claim 1, characterized in that: The toggle assembly comprises a first reduction motor (6) and a toggle shaft (7), wherein the first reduction motor (6) is mounted on the top plate of the knife shaft frame (3), the top end of the vertically arranged toggle shaft (7) is inserted into the output shaft sleeve of the first reduction motor (6), and the bottom end of the toggle shaft (7) is an integrally formed eccentric shaft head (702), and the eccentric shaft head (702) is inserted into the annular groove (501).

4. The strip trimming device according to claim 3, characterized in that: The toggle assembly also includes an eccentric sleeve (8), the eccentric sleeve (8) includes a flange plate at the top and a sleeve portion at the bottom, the flange plate and the sleeve portion are coaxially arranged; the flange plate is connected between the top plate of the knife shaft frame (3) and the bottom surface of the first reduction motor (6); a toggle shaft hole (801) is vertically opened on the eccentric sleeve (8), the toggle shaft (7) is coaxially installed in the toggle shaft hole (801), and the toggle shaft hole (801) and the axis line of the sleeve portion are parallel and separated; a plurality of bolt mounting holes (804) are evenly distributed on the circumference on the flange plate, and the mounting holes (804) are long arc holes.

5. The strip trimming device according to claim 4, characterized in that: The toggle assembly also includes a bushing (14) and a wear-resistant sleeve (15); the bushing (14) is coaxially mounted on the bushing hole section (802) at the bottom end of the toggle shaft hole (801); the inner hole of the bushing (14) is clearance-matched with the outer wall of the toggle shaft (7); the wear-resistant sleeve (15) is sleeved on the eccentric shaft head (702); the outer diameter of the wear-resistant sleeve (15) is adapted to the width of the annular groove (501).

6. The strip trimming device according to claim 5, characterized in that: An outer oil groove (805) is provided on the flange plate, and an inner oil groove (701) is provided in the center of the lower middle portion of the shifting shaft (7). The outer oil groove (805) and the inner oil groove (701) are connected to the gap between the inner hole of the bushing (14) and the outer wall of the shifting shaft (7).

7. The strip trimming device according to claim 1, characterized in that: A plurality of lubricating grease grooves (503) are circumferentially provided on the mating walls of the outer wall of the bearing sleeve (5) and the front and rear side wall mounting holes of the knife shaft frame (3), and an oil passage for replenishing lubricating grease to the lubricating grease grooves (503) is provided on the knife shaft frame (3).

8. The strip trimming device according to claim 7, characterized in that: The axis of the bearing seat (502) on which the bearing for the upper cutter shaft (4) is mounted on the inner hole of the bearing sleeve (5) is parallel to and separated from the axis of the mating wall at the grease groove (503); a circumferential drive assembly for driving the bearing sleeve (5) to rotate is provided at the rear end of the bearing sleeve (5).

9. The strip trimming device according to claim 8, characterized in that: The circumferential drive assembly comprises a driven gear (12) and a second reduction motor (13); the driven gear (12) in an annular shape is coaxially mounted on the rear end surface of the bearing sleeve (5); the second reduction motor (13) is mounted on the rear side wall of the knife shaft frame (3); the output shaft of the second reduction motor (13) is equipped with a driving gear, and the driving gear is meshed with the driven gear (12) in an open position.

10. A method for adjusting a strip trimming device, characterized in that: By using the strip trimming device described in any one of claims 1 to 9 to trim the strip, the side gap between the upper disc cutter and the lower disc cutter can be adjusted.

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