Spacing-adjustable cold-rolled steel coil slitting equipment

Abstract

The invention relates to the field, in particular to spacing-adjustable cold-rolled steel coil slitting equipment. Comprising a winding mechanism and an unwinding mechanism, and further comprises two power mechanisms arranged on the side, close to the unwinding mechanism, of the winding mechanism and each comprising a motor and four tandem shafts, two ends of the four tandem shafts are fixedly connected with the output ends of the motors through flange plates, and two cutting assemblies arranged on the two power mechanisms. Each cutting mechanism comprises a plurality of main cutting mechanisms, a plurality of auxiliary cutting mechanisms and a plurality of positioning discs, the main cutting mechanisms are arranged in an array at equal intervals along the tandem shaft, the auxiliary cutting mechanisms are arranged on the sides of the main cutting mechanisms respectively, and the positioning discs are fixedly connected to the two ends of the main cutting mechanisms and the two ends of the auxiliary cutting mechanisms respectively; each auxiliary cutting mechanism comprises two main fluted discs, two auxiliary fluted discs and four scaling cutter sets, the two main fluted discs and the two auxiliary fluted discs are rotationally connected with the corresponding positioning discs respectively, and the four scaling cutter sets are arranged on the sides, close to each other, of the two positioning discs in an equal-angle array mode in the circumferential direction.

Description

Technical Field

[0001] The invention relates to a field, and in particular to a cold-rolled steel coil slitting device with adjustable spacing. Background Art

[0002] In the cold-rolled steel coil slitting machine, the conventional machine is usually connected and cooperated with the steel coil device by means of a belt drive mechanism. In this connection and cooperation mode, the belt drive mechanism drives the steel coil device to operate, thereby driving the cold-rolled steel coil to unfold, and then the cutting operation can be carried out. However, this type of cold-rolled steel coil slitting machine has an obvious defect that it cannot adjust the splitting spacing. This deficiency will cause the finished product size of the coil to be fixed after being split, lacking flexibility and difficult to meet diverse production needs.

[0003] The Chinese patent with announcement number CN202210748913.6 provides an adjustable spacing cold-rolled steel coil slitting device. The device is designed to be equipped with a plurality of cutting tools in the loader frame, and the upper edge of the cutting tool extends out of the bearing surface of the slitting machine box and is exposed, so as to cut the cold-rolled steel coil into strips; the cutting tool is installed on the adjusting part through the mounting part, and the cutting tool is driven to move by the driving of the adjusting part, so as to adjust the spacing of the cutting tool; a plurality of separation supports for separating the mounting parts and the adjusting parts are provided on the proposed part. In the preparation stage, the separation supports are adjusted to a predetermined coordinate position according to the proposed slitting size of the cold-rolled steel coil, and the adjusting part drives the cutting tool to move. After the mounting part collides with the separation support, the mounting part and the adjusting part are separated from each other, and the cutting tool at this time is retained at the coordinate position of the corresponding separation support.

[0004] However, the cutting tools in the equipment can only be adjusted synchronously as a whole, and the number of tools cannot be changed in time. Therefore, under the premise that the width of the cold-rolled steel coil remains unchanged, if the number of tools cannot be increased or decreased in time, the spacing between the cold-rolled steel coils cannot be significantly reduced when they are cut. For example, when the number of cutting columns is increased or decreased by half, the tools located on the side need to be away from the steel coils. At this time, the floor space of the equipment needs to be increased. At the same time, the traditional spacing adjustment equipment requires the tools to move along the tool axis during the adjustment process. This process will cause wear on the tools, thereby affecting the subsequent processing of the tools. Summary of the invention

[0005] Based on this, it is necessary to provide a cold-rolled steel coil slitting equipment with adjustable spacing to address the existing technical problems.

[0006] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

[0007] A cold-rolled steel coil slitting device with adjustable spacing includes a winding mechanism and an unwinding mechanism for driving the steel coil to move, and also includes:

[0008] Two power mechanisms are symmetrically arranged on one side of the winding mechanism close to the unwinding mechanism. Each power mechanism includes a motor and four series-connected shafts. The two ends of the four series-connected shafts are respectively fixedly connected to the output end of the motor through flanges.

[0009] Two groups of cutting components are respectively arranged beside the two motors, and each group of cutting components is respectively connected to four series shafts beside one motor;

[0010] Each cutting assembly includes a plurality of main cutting mechanisms, a plurality of secondary cutting mechanisms and a plurality of positioning disks. The plurality of main cutting mechanisms are arranged in an array at equal intervals along the serial axis, and the plurality of secondary cutting mechanisms are arranged beside the plurality of main cutting mechanisms. Positioning disks are fixedly connected to both ends of the main cutting mechanism and the secondary cutting mechanism.

[0011] Each auxiliary cutting mechanism includes two main toothed discs, two auxiliary toothed discs and four retractable knife groups. The two main toothed discs and the two auxiliary toothed discs are coaxially rotatable. The two main toothed discs and the two auxiliary toothed discs are respectively rotatably connected to the corresponding positioning discs. The four retractable knife groups are arranged in an equiangular array along the circumferential direction on one side close to the two positioning discs.

[0012] Furthermore, the power mechanism includes a power handle, an assembly gear ring and four assembly gears. The assembly gear ring is rotatably connected to a positioning plate close to the motor. The four assembly gears are respectively coaxially fixed to four series shafts. The four assembly gears are respectively meshed with the assembly gear ring. The power handle is fixed to the outer edge of the assembly gear ring.

[0013] Furthermore, the secondary cutting mechanism also includes eight power gears, two power gear rings, eight transfer gears, eight connecting gears, eight differential gears and eight differential pins. The eight power gears are respectively rotatably arranged on the side away from the two positioning plates. The power gear is coaxially fixedly connected to the series shaft. The side of the power gear close to the positioning plate is fixedly connected with the differential gear. The differential gear is formed with differential grooves along the circumferential direction. One end of the eight differential pins is fixedly connected to the power gear, and the other end is slidably connected to the differential groove. The two power gear rings are respectively coaxially rotatably connected to the side away from the two positioning plates. The power gear rings are meshed with the differential gears. A transfer gear is respectively arranged on the side of each power gear. The transfer gear is rotatably connected to the positioning plate and meshed with the power gear. The eight connecting gears are respectively coaxially fixedly connected to the eight transfer gears. The two main gear plates are respectively meshed with the corresponding connecting gears, and the two secondary gear plates are respectively coaxially fixedly connected to the two power gear rings.

[0014] Furthermore, the main cutting mechanism also includes a main knife and a main shaft, the main shaft is fixedly connected to the positioning plate coaxially, and the main knife fixing sleeve is arranged outside the main shaft.

[0015] Furthermore, the auxiliary cutting mechanism also includes a plurality of auxiliary shafts, both ends of which are respectively fixedly connected to the positioning plates, and the auxiliary shafts are formed with four limiting grooves at equal intervals along the circumferential direction.

[0016] Furthermore, the zoom tool group includes an auxiliary tool, a main gear, a main screw sleeve, a main screw, a main slider and a main baffle. The auxiliary tool is arranged on the side close to the two positioning disks and on the side of the limiting groove away from the center of the positioning disk. The main gear is rotatably connected to the positioning disk and meshes with the main gear disk. The main screw sleeve is coaxially fixed to the main gear, the main screw is threadedly connected to the main screw sleeve, the main slider is fixedly connected to one end of the main screw close to the auxiliary tool, the main baffle is fixedly connected to the main screw, the main baffle is fixedly connected to one end of the auxiliary tool close to the main screw, and the main slider is slidably connected to the main baffle.

[0017] Furthermore, the retractable tool assembly also includes a limiting tool holder, a secondary screw sleeve and a secondary screw rod. The secondary screw sleeve is fixedly connected to the limiting tool holder, one end of the secondary screw rod is fixedly connected to the secondary tool, and the other end is threadedly connected to the secondary screw sleeve. The limiting tool holder is slidably connected to the limiting groove.

[0018] Furthermore, the expansion and contraction tool group also includes a bevel gear rack, a main bevel gear, and a secondary bevel gear. The bevel gear rack is fixedly connected to the limiting tool holder, the secondary bevel gear is rotatably connected to the bevel gear rack and is coaxially fixed to the secondary screw sleeve, and the main bevel gear is rotatably connected to the bevel gear rack and meshes with the secondary bevel gear.

[0019] Furthermore, the expansion and contraction tool assembly also includes a secondary gear, a limit pin and a limit sleeve. The secondary gear is rotatably connected to the positioning plate and meshes with the secondary gear plate. The limit pin is coaxially fixed to the secondary gear. The limit sleeve is slidably connected to the limit pin and coaxially fixed to the main bevel gear.

[0020] Furthermore, the retractable tool assembly also includes two limit plates and two limit covers. The two limit plates are respectively arranged on both sides of the auxiliary screw and are fixedly connected to the limit tool holder. The two limit covers are respectively slidably connected to the two limit plates and are fixedly connected to the auxiliary tool.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] First, the device adjusts the cutting distance by setting a number of auxiliary cutting mechanisms that can be adjusted uniformly. Compared with the traditional spacing adjustment tool, the main knife in the device will not change during the adjustment process, and the auxiliary knives will only retract and expand, thereby enhancing the overall stability of the device and improving the stability of the finished steel coil before and after cutting;

[0023] Second, several auxiliary knives in the device will move along during the adjustment process, but this movement will not cause the cutting trajectory to be interrupted when the auxiliary knives cut the steel coil, thereby improving the stability of the device when processing the steel coil;

[0024] Third: This device can achieve a large adjustment of the cutting interval. Compared with the traditional interval adjustment mechanism, the adjustment process of this device is simple and the adjusted cutting interval is more stable. There is no need to worry about the tool moving due to the tool sliding on the knife shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the three-dimensional structure of an embodiment;

[0026] Figure 2 yes Figure 1 A magnified view of the structure at center;

[0027] Figure 3 is a side view of an embodiment;

[0028] Figure 4 Schematic diagram of the local structure of the power mechanism in the embodiment;

[0029] Figure 5 is a schematic diagram of the three-dimensional structure of the auxiliary cutting mechanism in the embodiment;

[0030] Figure 6 is a schematic diagram of the three-dimensional structure decomposition of the auxiliary cutting mechanism in the embodiment;

[0031] Figure 7 is a half-section view of the three-dimensional structure of the auxiliary cutting mechanism in the embodiment;

[0032] Figure 8 yes Figure 7 A magnified view of the structure at B in the middle;

[0033] Fig. 9 is a half-section view of the three-dimensional structure of the auxiliary cutting mechanism in another angle in the embodiment;

[0034] Fig.10 yes Fig. 9 Enlarged view of the structure at point C in the middle.

[0035] The numbers in the figure are:

[0036] 1. Rewinding mechanism; 2. Unwinding mechanism; 3. Steel coil; 4. Cutting assembly; 5. Main cutting mechanism; 6. Main knife; 7. Main shaft; 8. Secondary cutting mechanism; 9. Power gear; 10. Power gear ring; 11. Transfer gear; 12. Connecting gear; 13. Secondary shaft; 14. Limiting groove; 15. Main gear plate; 16. Secondary gear plate; 17. Differential gear; 18. Differential groove; 19. Differential pin; 20. Retracting knife group; 21. Secondary knife; 22. Main gear; 23. Main screw sleeve; 24, main screw; 25, main slider; 26, main baffle; 27, auxiliary gear; 28, limit pin; 29, limit sleeve; 30, bevel gear rack; 31, main bevel gear; 32, auxiliary bevel gear; 33, auxiliary screw sleeve; 34, limit tool holder; 35, auxiliary screw; 36, limit plate; 37, limit cover; 38, positioning plate; 39, power mechanism; 40, serial shaft; 41, power handle; 42, assembly gear ring; 43, assembly gear; 44, motor. DETAILED DESCRIPTION

[0037] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0038] refer to Figures 1 to 10 , a cold-rolled steel coil slitting device with adjustable spacing, comprising a winding mechanism 1 and an unwinding mechanism 2 for driving a steel coil 3 to move, and also comprising:

[0039] Two power mechanisms 39 are symmetrically arranged on one side of the winding mechanism 1 close to the unwinding mechanism 2. Each power mechanism 39 includes a motor 44 and four serially connected shafts 40. Both ends of the four serially connected shafts 40 are respectively fixedly connected to the output end of the motor 44 through flanges.

[0040] Two groups of cutting assemblies 4 are respectively arranged beside two motors 44, and each group of cutting assemblies 4 is respectively connected to four serial shafts 40 beside one motor 44;

[0041] Each cutting assembly 4 includes a plurality of main cutting mechanisms 5, a plurality of secondary cutting mechanisms 8 and a plurality of positioning plates 38. The plurality of main cutting mechanisms 5 are arranged in an array at equal intervals along the serial axis 40, and the plurality of secondary cutting mechanisms 8 are arranged beside the plurality of main cutting mechanisms 5. The two ends of the main cutting mechanism 5 and the secondary cutting mechanism 8 are respectively fixedly connected with the positioning plates 38.

[0042] Each auxiliary cutting mechanism 8 includes two main toothed discs 15, two auxiliary toothed discs 16 and four retractable knife groups 20. The two main toothed discs 15 and the two auxiliary toothed discs 16 are coaxially rotatably arranged. The two main toothed discs 15 and the two auxiliary toothed discs 16 are respectively rotatably connected to the corresponding positioning discs 38. The four retractable knife groups 20 are arranged in an equiangular array along the circumferential direction on one side close to the two positioning discs 38.

[0043] When the device is in operation, the unwinding mechanism 2 unwinds the steel coil 3, and the rewinding mechanism 1 rewinds the slit steel coil 3. When the steel coil 3 is cut and slit, under the action of the power mechanism 39, the two motors 44 are started and drive the corresponding cutting components 4 to rotate through a plurality of serial shafts 40 respectively.

[0044] When the cutting assembly 4 rotates, a number of main cutting mechanisms 5 and a number of auxiliary cutting mechanisms 8 will cut the steel coil 3. When the cutting interval needs to be adjusted, the operator first drives the number of serially connected shafts 40 to rotate through the power mechanism 39, and then the number of serially connected shafts 40 will drive the corresponding number of retractable knife groups 20 to deform. After the number of retractable knife groups 20 shrink, they cannot contact the steel coil 3 during the subsequent cutting process, thereby realizing the adjustment of the subsequent cutting interval.

[0045] In order to supplement the specific structure of the power mechanism 39, the following features are also specifically provided:

[0046] The power mechanism 39 includes a power handle 41, an assembly gear ring 42 and four assembly gears 43. The assembly gear ring 42 is rotatably connected to the positioning plate 38 near the motor 44. The four assembly gears 43 are respectively coaxially fixed to the four series shafts 40 (refer to Figure 4 ), the four assembly gears 43 are respectively meshed with the assembly gear ring 42, and the power handle 41 is fixedly connected to the outer edge of the assembly gear ring 42. When it is necessary to drive the four series-connected shafts 40 to rotate, the operator turns the power handle 41, and the power handle 41 moves to drive the assembly gear ring 42 to rotate, and the assembly gear ring 42 rotates to drive the assembly gear 43 meshed with it to rotate.

[0047] In order to realize the driving of the main gear disc 15 and the auxiliary gear disc 16, the following features are also specifically provided:

[0048] The auxiliary cutting mechanism 8 also includes eight power gears 9, two power ring gears 10, eight transfer gears 11, eight connecting gears 12, eight differential gears 17 and eight differential pins 19. The eight power gears 9 are respectively rotatably arranged on the side away from the two positioning plates 38 (refer to Figure 5 ), the power gear 9 is coaxially connected to the series shaft 40, and the side of the power gear 9 close to the positioning plate 38 is fixedly connected to the differential gear 17 (reference Figure 5 and Figure 6 ), the differential gear 17 is formed with a differential groove 18 along the circumferential direction, one end of the eight differential pins 19 is fixedly connected to the power gear 9, and the other end is slidably connected to the differential groove 18, the two power ring gears 10 are respectively connected to the side of the two positioning plates 38 away from each other coaxially, the power ring gear 10 is meshed with the differential gear 17, and a transfer gear 11 is provided on the side of each power gear 9, the transfer gear 11 is connected to the positioning plate 38 and meshed with the power gear 9, the eight connecting gears 12 are respectively connected to the eight connecting gears 11 coaxially, the two main toothed plates 15 are respectively meshed with the corresponding connecting gears 12, and the two auxiliary toothed plates 16 are respectively connected to the two power ring gears 10 coaxially. When the series shaft 40 rotates, the series shaft 40 will drive the corresponding differential gear 17 to rotate through the power gear 9, the differential gear 17 will drive the power ring gear 10 meshed with it to rotate, and the power ring gear 10 will drive the auxiliary toothed plate 16 fixedly connected with it to rotate (reference Figure 5 ), at the same time, the power gear 9 will drive the connecting gear 12 to rotate through the transfer gear 11, and the connecting gear 12 will drive the main gear plate 15 meshing therewith to rotate.

[0049] In this process, because the differential pin 19 drives the differential gear 17 to rotate only when it reaches the edge of the differential slot 18 , the differential gear 17 rotates later than the connecting gear 12 , that is, the auxiliary sprocket 16 rotates later than the main sprocket 15 .

[0050] In order to supplement the specific structure of the main cutting mechanism 5, the following features are also specifically provided:

[0051] The main cutting mechanism 5 also includes a main knife 6 and a main shaft 7, and the main shaft 7 is coaxially connected to the positioning plate 38 (refer to Figure 4 ), the main knife 6 is fixedly mounted on the outside of the main shaft 7. When the motor 44 drives the plurality of series-connected shafts 40 to rotate along the output end of the motor 44 through the flange, the main knife 6 mounted on the outside of the main shaft 7 will cut the steel coil 3, and after adjusting the spacing, the main knife 6 still has a cutting effect.

[0052] In order to drive the plurality of retractable knife groups 20 to move, the following features are also specifically provided:

[0053] The auxiliary cutting mechanism 8 also includes a plurality of auxiliary shafts 13, both ends of which are respectively fixedly connected to the positioning plate 38, and the auxiliary shaft 13 is formed with four limiting grooves 14 at equal intervals along the circumferential direction (refer to Fig.10 When the four retractable knife groups 20 move, the retractable knife groups 20 will move along the corresponding limiting grooves 14 to determine whether the retractable knife groups 20 cut the steel coil 3.

[0054] In order to supplement the specific structure of the retractable knife assembly 20, the following features are also specifically provided:

[0055] The retractable knife assembly 20 includes an auxiliary knife 21, a main gear 22, a main screw sleeve 23, a main screw 24, a main slider 25 and a main baffle 26. The auxiliary knife 21 is arranged on the side where the two positioning plates 38 are close to each other and on the side where the limiting groove 14 is away from the center of the positioning plate 38 (reference Figure 7 ), the main gear 22 is rotatably connected to the positioning disk 38 and meshes with the main toothed disk 15, the main screw sleeve 23 is coaxially fixedly connected to the main gear 22, the main screw 24 is threadedly connected to the main screw sleeve 23, the main slider 25 is fixedly connected to one end of the main screw 24 close to the auxiliary knife 21, the main baffle 26 is fixedly connected to one end of the auxiliary knife 21 close to the main screw 24, the main baffle 26 is fixedly connected to the main screw 24, and the main slider 25 is slidably connected to the main baffle 26. When the main toothed disk 15 rotates, the main toothed disk 15 will drive the main screw sleeve 23 to rotate through the main gear 22, and the main screw sleeve 23 will drive the auxiliary knife 21 to move toward the direction close to the positioning disk 38 through the main screw 24.

[0056] In order to realize the axial movement of the auxiliary knife 21 along the auxiliary axis 13, the following features are also specifically provided:

[0057] The expansion and contraction tool assembly 20 also includes a limited tool holder 34, a secondary screw sleeve 33 and a secondary screw rod 35, the secondary screw sleeve 33 is fixedly connected to the limited tool holder 34, and one end of the secondary screw rod 35 is fixedly connected to the secondary tool 21 (refer to Figure 7), the other end is threadedly connected to the secondary screw sleeve 33, and the limiting tool holder 34 is slidably connected to the limiting groove 14. When the main screw 24 drives the secondary knife 21 to move, the limiting tool holder 34 is slidably connected to the limiting groove 14 to ensure that the two adjacent secondary knives 21 will move in a dislocated manner, thereby preventing the two adjacent secondary knives 21 from colliding when they move toward the limiting groove 14 in the subsequent movement.

[0058] In order to realize the movement of the auxiliary knife 21 toward the direction close to the limiting groove 14, the following features are also specifically provided:

[0059] The expansion and contraction knife group 20 also includes an umbrella gear frame 30, a main umbrella gear 31, and a secondary umbrella gear 32. The umbrella gear frame 30 is fixedly connected to the limiting knife frame 34. The secondary umbrella gear 32 is rotatably connected to the umbrella gear frame 30 and is coaxially fixedly connected to the secondary screw sleeve 33. The main umbrella gear 31 is rotatably connected to the umbrella gear frame 30 and meshes with the secondary umbrella gear 32. When the main umbrella gear 31 rotates (the specific transmission process is explained later), the main umbrella gear 31 will drive the secondary screw sleeve 33 to rotate through the secondary umbrella gear 32. After the secondary screw sleeve 33 rotates, it will drive the secondary screw 35 to move. After the secondary screw 35 moves, it will drive the secondary knife 21 to move in the direction close to the limiting groove 14. At this time, the four sets of secondary knives 21 will no longer contact the steel coil 3 after moving, that is, the adjustment of the cutting spacing is completed.

[0060] In order to prevent the power transmission of the auxiliary toothed disc 16 from being interrupted when the auxiliary knife 21 moves toward the direction close to the positioning disc 38, the following features are also specifically provided:

[0061] The retracting knife assembly 20 further includes a secondary gear 27, a stop pin 28 and a stop sleeve 29. The secondary gear 27 is rotatably connected to the positioning plate 38 and meshes with the secondary toothed disc 16. The stop pin 28 is coaxially fixedly connected to the secondary gear 27. The stop sleeve 29 is slidably connected to the stop pin 28 and coaxially fixedly connected to the main bevel gear 31. When the secondary toothed disc 16 rotates, the secondary toothed disc 16 drives the stop pin 28 to rotate through the secondary gear 27. The stop pin 28 drives the main bevel gear 31 to rotate through the stop sleeve 29. After the main bevel gear 31 rotates, it drives the secondary screw sleeve 33 to rotate. In this process, when the secondary knife 21 moves, the stop pin 28 slides relative to the stop sleeve 29, thereby preventing the power of the secondary toothed disc 16 from being interrupted.

[0062] In order to limit the movement of the auxiliary knife 21 toward the limiting groove 14, the following features are also specifically provided:

[0063] The retractable knife assembly 20 further includes two limit plates 36 and two limit covers 37. The two limit plates 36 are respectively arranged on both sides of the auxiliary screw 35 and are fixedly connected to the limit knife holder 34 (refer to Fig.10), the two limiting covers 37 are respectively slidably connected with the two limiting plates 36 and fixedly connected with the auxiliary knife 21. When the auxiliary screw 35 drives the auxiliary knife 21 to move in the direction close to the limiting groove 14, the limiting plates 36 and the limiting covers 37 will slide relative to each other, thereby limiting the movement of the auxiliary knife 21, preventing the auxiliary screw 35 from idling and causing the auxiliary knife 21 to be unable to move.

[0064] The working principle of this device is that when the device is running, the unwinding mechanism 2 unwinds the steel coil 3, and the rewinding mechanism 1 rewinds the slit steel coil 3. When the steel coil 3 is cut and slit, under the action of the power mechanism 39, the two motors 44 are started and drive the corresponding cutting components 4 to rotate through a number of serial shafts 40 respectively.

[0065] When the cutting assembly 4 rotates, several main knives 6 and several auxiliary knives 21 will cut the steel coil 3. When the cutting interval needs to be adjusted, the operator first drives the several serial shafts 40 to rotate by the power handle 41, and then the several serial shafts 40 will drive the corresponding differential gears 17 to rotate through the power gear 9, and the differential gear 17 will drive the power ring gear 10 meshing with it to rotate, and the power ring gear 10 will drive the auxiliary gear plate 16 fixed to it to rotate. At the same time, the power gear 9 will drive the connecting gear 12 to rotate through the transfer gear 11, and the connecting gear 12 will drive the main gear plate 15 meshing with it to rotate.

[0066] In this process, because the differential pin 19 drives the differential gear 17 to rotate only when it reaches the edge of the differential slot 18 , the differential gear 17 rotates later than the connecting gear 12 , that is, the auxiliary sprocket 16 rotates later than the main sprocket 15 .

[0067] When the main toothed disc 15 rotates, the four auxiliary knives 21 located on the same auxiliary shaft 13 will move toward the direction close to the positioning disc 38. At this time, the two adjacent auxiliary knives 21 will be staggered first. Then, when the auxiliary toothed disc 16 rotates, the four auxiliary knives 21 will move toward the direction close to the auxiliary shaft 13 to ensure that they cannot contact the steel coil 3 during the subsequent cutting process, thereby realizing the adjustment of the subsequent cutting spacing.

[0068] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A cold-rolled steel coil slitting device with adjustable spacing, comprising a winding mechanism (1) and an unwinding mechanism (2) for driving a steel coil (3) to move, characterized in that: Also includes: Two power mechanisms (39) are symmetrically arranged on one side of the reeling mechanism (1) close to the unreeling mechanism (2), each power mechanism (39) comprises a motor (44) and four serially connected shafts (40), and both ends of the four serially connected shafts (40) are respectively fixedly connected to the output end of the motor (44) through flanges. Two groups of cutting assemblies (4) are respectively arranged beside the two motors (44), and each group of cutting assemblies (4) is respectively connected to four series-connected shafts (40) beside one motor (44); Each cutting assembly (4) comprises a plurality of main cutting mechanisms (5), a plurality of secondary cutting mechanisms (8) and a plurality of positioning disks (38); the plurality of main cutting mechanisms (5) are arranged in an array at equal intervals along the serial connection axis (40); the plurality of secondary cutting mechanisms (8) are arranged beside the plurality of main cutting mechanisms (5); and the two ends of the main cutting mechanism (5) and the secondary cutting mechanism (8) are respectively fixedly connected with positioning disks (38); Each auxiliary cutting mechanism (8) comprises two main toothed discs (15), two auxiliary toothed discs (16) and four retractable knife groups (20); the two main toothed discs (15) and the two auxiliary toothed discs (16) are coaxially rotatably arranged; the two main toothed discs (15) and the two auxiliary toothed discs (16) are respectively rotatably connected to corresponding positioning discs (38); and the four retractable knife groups (20) are arranged in an array at equal angles along the circumferential direction on one side close to the two positioning discs (38).

2. The adjustable spacing cold-rolled steel coil slitting equipment according to claim 1 is characterized in that: The power mechanism (39) comprises a power handle (41), an assembly gear ring (42) and four assembly gears (43); the assembly gear ring (42) is rotationally connected to a positioning plate (38) close to a motor (44); the four assembly gears (43) are respectively coaxially fixedly connected to four series-connected shafts (40); the four assembly gears (43) are respectively meshed with the assembly gear ring (42); and the power handle (41) is fixedly connected to the outer edge of the assembly gear ring (42).

3. The adjustable spacing cold-rolled steel coil slitting equipment according to claim 1, characterized in that: The secondary cutting mechanism (8) also includes eight power gears (9), two power gear rings (10), eight transfer gears (11), eight connecting gears (12), eight differential gears (17) and eight differential pins (19). The eight power gears (9) are respectively rotatably arranged on the side away from the two positioning plates (38). The power gear (9) is coaxially fixedly connected to the series connection shaft (40). The side of the power gear (9) close to the positioning plate (38) is fixedly connected to the differential gear (17). The differential gear (17) is formed with a differential groove (18) along the circumferential direction. One end of the eight differential pins (19) is fixedly connected to the power gear (9), and the other end is fixedly connected to the differential. The two power gear rings (10) are respectively connected to the two sides of the two positioning plates (38) for coaxial rotation, the power gear rings (10) are meshed with the differential gear (17), a transfer gear (11) is respectively arranged on the side of each power gear (9), the transfer gear (11) is rotationally connected to the positioning plate (38) and meshed with the power gear (9), the eight connecting gears (12) are respectively fixedly connected to the eight connecting gears (11) coaxially, the two main gear plates (15) are respectively meshed with the corresponding connecting gears (12), and the two auxiliary gear plates (16) are respectively fixedly connected to the two power gear rings (10) coaxially.

4. The adjustable spacing cold-rolled steel coil slitting equipment according to claim 1, characterized in that: The main cutting mechanism (5) also comprises a main knife (6) and a main shaft (7). The main shaft (7) is coaxially fixedly connected to the positioning plate (38), and the main knife (6) is fixedly sleeved on the outside of the main shaft (7).

5. The adjustable spacing cold-rolled steel coil slitting equipment according to claim 1, characterized in that: The auxiliary cutting mechanism (8) also includes a plurality of auxiliary shafts (13). The two ends of the plurality of auxiliary shafts (13) are respectively fixedly connected to the positioning disk (38). The auxiliary shafts (13) are formed with four limiting grooves (14) at equal intervals along the circumferential direction.

6. The adjustable spacing cold-rolled steel coil slitting equipment according to claim 5, characterized in that: The retractable knife group (20) comprises an auxiliary knife (21), a main gear (22), a main screw sleeve (23), a main screw rod (24), a main slide block (25) and a main baffle plate (26). The auxiliary knife (21) is arranged on a side close to two positioning disks (38) and on a side of the limiting groove (14) away from the center of the positioning disk (38). The main gear (22) is rotatably connected to the positioning disk (38) and meshes with the main toothed disk (15). The main screw sleeve (23) is coaxially fixedly connected to the main gear (22). The main screw rod (24) is threadedly connected to the main screw sleeve (23). The main slide block (25) is fixedly connected to one end of the main screw rod (24) close to the auxiliary knife (21). The main baffle plate (26) is fixedly connected to one end of the auxiliary knife (21) close to the main screw rod (24). The main baffle plate (26) is fixedly connected to the main screw rod (24). The main slide block (25) is slidably connected to the main baffle plate (26).

7. The adjustable spacing cold-rolled steel coil slitting equipment according to claim 6, characterized in that: The retractable tool assembly (20) further comprises a limiting tool holder (34), a secondary screw sleeve (33) and a secondary screw rod (35); the secondary screw sleeve (33) is fixedly connected to the limiting tool holder (34); one end of the secondary screw rod (35) is fixedly connected to the secondary tool (21) and the other end is threadedly connected to the secondary screw sleeve (33); the limiting tool holder (34) is slidably connected to the limiting groove (14).

8. The adjustable spacing cold-rolled steel coil slitting equipment according to claim 7, characterized in that: The retractable tool assembly (20) further comprises a bevel gear frame (30), a main bevel gear (31), and a secondary bevel gear (32); the bevel gear frame (30) is fixedly connected to a position limiting tool frame (34); the secondary bevel gear (32) is rotatably connected to the bevel gear frame (30) and is coaxially fixedly connected to a secondary screw sleeve (33); and the main bevel gear (31) is rotatably connected to the bevel gear frame (30) and meshes with the secondary bevel gear (32).

9. The adjustable spacing cold-rolled steel coil slitting equipment according to claim 8, characterized in that: The retractable knife assembly (20) further comprises a secondary gear (27), a limiting pin (28) and a limiting sleeve (29); the secondary gear (27) is rotatably connected to the positioning disk (38) and meshes with the secondary gear disk (16); the limiting pin (28) is coaxially fixedly connected to the secondary gear (27); and the limiting sleeve (29) is slidably connected to the limiting pin (28) and coaxially fixedly connected to the main bevel gear (31).

10. The adjustable spacing cold-rolled steel coil slitting equipment according to claim 7, characterized in that: The retractable knife assembly (20) further comprises two limit plates (36) and two limit covers (37). The two limit plates (36) are respectively arranged on both sides of the auxiliary screw rod (35) and are fixedly connected to the limit knife holder (34). The two limit covers (37) are respectively slidably connected to the two limit plates (36) and are fixedly connected to the auxiliary knife (21).

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