Copper strip double-station uncoiling device and working method

Abstract

The invention discloses a copper strip double-station uncoiling device and a working method, and belongs to the technical field of strip uncoiling equipment. The device comprises a rack, the rack comprises a base and a barrel, a rotary supporting bearing is coaxially assembled on the top of the barrel, a working table is installed on an outer ring of the rotary supporting bearing, and a first gear motor is installed on the outer wall of the barrel through a supporting plate and drives an outer gear ring of the rotary supporting bearing; the uncoiling arm group comprises a bearing seat, a main shaft and a clamping mechanism, the main shaft is rotatably mounted on the working table, and the cantilever end of the main shaft is provided with the clamping mechanism for clamping a copper flat master strip coil; the two uncoiling arm sets are symmetrically and coaxially arranged at the two ends of the top face of the workbench plate. The two output ends of the differential mechanism are output to the two main shafts respectively, and the input end of the differential mechanism is connected with a second gear motor; and the locking assembly can lock the clamping mechanism in the circumferential direction. The differential mechanism is used for centrally driving the winding drum driving main shafts on the two sides, and the copper flat master tape clamping mechanisms on the two sides are alternately driven by the gear motor.

Description

Technical Field

[0001] The invention relates to the technical field of strip unwinding equipment, and in particular to a copper strip double-station unwinding device and a working method. Background Art

[0002] As a key electronic material, high-precision special-shaped copper strip is crucial in the electronics industry due to its unique profile design and excellent electrical and mechanical properties. It mainly acts as a chip carrier in electronic components, responsible for the transmission of electrical signals and the dissipation of heat energy, and is widely used in semiconductor discrete devices, large-scale integrated circuits, consumer electronics, aerospace and other high-tech fields.

[0003] In the lead frame forging special-shaped copper strip production line, copper flat master tape is used as raw material to produce high-precision special-shaped copper strip. The uncoiler is needed in the initial process of unwinding the copper flat master tape. At present, most of the metal strip uncoilers on the market are cantilever single-drum uncoilers. When the strip material roll on the cantilever is used up, the baffle is removed and a new roll is installed. Since the installation of the roll is time-consuming, the downstream equipment cannot operate continuously, the production time is shortened, and the production efficiency is low. Of course, there are also some double-head double-station uncoilers on the market. However, most of these double-station uncoilers are manufactured for steel coils, and often use hydraulic motors as the uncoiler driving force. They need to be equipped with hydraulic pump stations, which are relatively complicated and prone to oil leakage. Some uncoilers need to use two sets of motors to drive the two rolls separately, and the electronic control and circuit control are relatively complicated. The applicant's copper flat mother tape is 2.38mm thick, 60mm wide, with a maximum outer diameter of 1500mm and a maximum weight of 1 ton, which is a light load. It is necessary to develop more applicable unwinding equipment in a targeted manner.

[0004] Therefore, it is necessary to develop a copper strip double-station unwinding device to address the above defects. Summary of the invention

[0005] The purpose of the present invention is to provide a double-station unwinding device for copper strips, which adopts a differential to centrally drive the reels on both sides to drive the main shaft, thereby realizing a set of reduction motors to alternately drive the copper flat mother tape clamping mechanisms on both sides.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention discloses a copper strip double-station unwinding device, comprising: The frame includes a cross-shaped base and an upper cylinder, a slewing bearing is coaxially mounted on the top of the cylinder, a workbench is mounted on the outer ring of the slewing bearing, a first reduction motor is mounted on the outer wall of the cylinder through a support plate, and a pinion gear at the main shaft output end of the first reduction motor is meshed with the outer gear ring of the slewing bearing; The unwinding arm group includes a bearing seat, a main shaft and a clamping mechanism. The main shaft is horizontally rotatably mounted on the workbench through two bearing seats. The cantilever end of the main shaft is provided with a clamping mechanism for clamping the copper flat mother tape roll. Two sets of the unwinding arm groups are symmetrically and coaxially arranged at both ends of the top surface of the workbench. A differential is centrally mounted in the middle of the top surface of the worktable, the two output ends of the differential are respectively output to the two spindles, and the input end of the differential is connected to a second reduction motor; The locking assembly comprises two groups of locking assemblies which are respectively arranged directly below the cantilever end of the main shaft; the locking assembly is installed on the bottom surface of the workbench through a support plate seat, and the locking assembly can circumferentially lock the clamping mechanism.

[0007] Furthermore, the clamping mechanism includes a guide chassis, a sleeve arc plate, a baffle frame and a slider. The guide chassis is installed on the cantilever end of the main shaft through flange bolts. The four sleeve arc plates are evenly distributed on the outer wall of the guide chassis. The inner end of the sleeve arc plate is slidably connected to the radial waist hole of the guide chassis through a slider; a tensioning assembly is provided on the inner side of the sleeve arc plate; two baffle frames are installed on each sleeve arc plate, and the baffle frames limit the side walls of the copper flat master tape roll.

[0008] Furthermore, the baffle frame is formed by bending and welding a narrow steel strip, and the overall shape is a triangle with a larger inside and a smaller outside. The barbs at the root of the baffle frame are hooked on the bottom surfaces of both side edges of the sleeve arc plate, and the baffle frame is clamped on the sleeve arc plate by pushing the top wall of the sleeve arc plate through a top screw.

[0009] Furthermore, the locking assembly includes a locking cylinder and a latch, the end flange of the locking cylinder is installed on the support plate seat, and the outward piston rod end of the locking cylinder is coaxially fixedly connected to the latch; a locking hole is opened on the inner side wall of the guide chassis, and the latch can be inserted into the locking hole.

[0010] Furthermore, it also includes a first proximity switch, which is installed on the support plate seat and is located directly below the locking cylinder. A sensing block is provided directly below the locking hole. The first proximity switch feeds back a signal to the electronic control system of the equipment.

[0011] Furthermore, it also includes a clamping wheel assembly, which is arranged on the frame and can clamp and prevent the copper flat mother tape roll clamped by the clamping mechanism of the work station from loosening.

[0012] Furthermore, the pressure wheel assembly includes a pressure wheel, a swing arm, a distal pin shaft seat and a cylinder. One side of the base is fixedly connected to a horizontally arranged extension base plate. The distal pin shaft seat is installed on the outer end of the extension base plate. The distal pin shaft seat supports the bottom pin of the swing arm. The pressure wheel can be rotatably installed on the top of the swing arm. The outer wheel surface of the pressure wheel can roll and contact the outer wall of the copper flat mother tape roll; the middle part of the cylinder is installed on the extension base plate through a hinge support, and the cylinder piston rod end pin is connected to the bottom end of the swing arm.

[0013] Furthermore, an arc-shaped long hole is provided on the ear plate of the distal pin shaft seat, and the center of the arc-shaped long hole is located on the axis of the pin shaft at the bottom of the swing arm; a second proximity switch is installed on the arc-shaped long hole, and the second proximity switch can collect the signal of the completion of the fast unwinding of the copper flat master tape roll and feed it back to the electronic control system of the equipment; It also includes an infrared sensor, the radial angle of the locking hole is located in the middle of two adjacent sleeve arc plates, the infrared sensor is installed on the support plate seat and is located directly below the first proximity switch; the axial centerline distance from the infrared sensor to the guide chassis is greater than the radius of the guide chassis; the infrared sensor can feed back a signal of whether a new copper flat master tape roll is installed or not to the electronic control system of the equipment.

[0014] The present invention discloses a working method of a copper strip double-station unwinding device, using the copper strip double-station unwinding device described above to carry out an unwinding operation of the copper flat master tape roll. During the unwinding operation: the unwinding arm group at the working station works, the corresponding locking cylinder is in a retracted state, the second reduction motor outputs power to the differential, the differential drives the main shaft to rotate, and the clamping mechanism drives the copper flat master tape roll to actively unwind; The unwinding arm group at the other end does not work, the corresponding locking cylinder is pushed out, and the latch can be inserted into the locking hole.

[0015] Further, the copper flat master tape roll at the working station is pressed by the pressing wheel assembly, the cylinder is pushed out, and the bottom end of the swing arm is pushed up, and the top end of the swing arm moves toward the copper flat master tape roll at the working station, and the pressing wheel is pressed on the outer wall of the copper flat master tape roll; When the bottom end of the swing arm triggers the second proximity switch, the signal indicating that the copper flat mother tape roll is quickly unwound is transmitted to the electronic control system of the equipment. When the electronic control system fails to collect the signal indicating that the material is ready from the infrared sensor at the material preparation station, an alarm message is issued to prompt material preparation.

[0016] Compared with the prior art, the beneficial technical effects of the present invention are: The copper strip double-station unwinding device of the present invention drives the outer ring of the slewing support bearing to rotate by the first reduction motor to drive the worktable to realize 180-degree reciprocating rotation, so that the two unwinding arm groups can be switched back and forth between the working station and the material preparation station, avoiding the material change downtime and improving the production efficiency. The second reduction motor and the differential are centrally arranged between the two main shafts, which can switch and drive the two unwinding arm groups, so that one set of power units can drive two sets of working ends, simplifying the structure and reducing the equipment investment cost. By adopting a locking assembly to lock the loading mechanism of the material preparation station, the power output by the differential is fully transmitted to the loading mechanism of the working station, driving the copper flat mother tape to unwind, that is, ensuring that the loading mechanism of the material preparation station does not rotate, and the loading mechanism of the working station obtains all the power, realizing one-to-two controllable switching. The copper strip double-station unwinding device of the present invention adopts a differential to centrally drive the reel driving spindles on both sides, so that a set of reduction motors alternately drive the loading mechanisms of the copper flat mother tapes on both sides.

[0017] In addition, by tightening the center hole of the copper flat master tape roll through four sleeve arc plates, the roll can be effectively clamped, and at the same time, the baffle frame limits the inner and outer side walls of the roll to prevent tilting and loosening; the baffle frame adopts a top screw locking method, which is easy to disassemble and install. The locking cylinder and the latch are specifically used by the locking assembly, and the guide chassis of the preparation station is locked by inserting into the locking hole. The locking is reliable and will not loosen. The top of the latch is set as a ball head and the outer edge of the locking hole is chamfered, so that the latch can be smoothly guided and inserted into the locking hole. By adding the clamping wheel group, the outer wall of the copper flat master tape roll of the working station can be continuously clamped to avoid loosening during the unwinding process; by the cylinder pushing the swing arm to swing, the clamping wheel can be continuously close to the sleeve arc plate during the unwinding process and is always in a clamping state. By setting the second proximity switch, the signal that the copper flat master tape roll is about to be unloaded can be collected and fed back to the electronic control system of the equipment, which plays the role of early warning for material change; by setting the infrared sensor, it can feedback whether the operator has unloaded the roll to the material preparation station in time, which also plays the role of early warning for material change. In addition, the radial angle of the locking hole on the guide chassis is located in the middle of the two adjacent sleeve arc plates, which can ensure that the opening of the two adjacent sleeve arc plates is directly above the tensioning sleeve, which is convenient for the operator to use the sling to hoist the copper flat master tape roll and clear the position of the sling, which is convenient for feeding the roll and removing the sling. At the same time, this angle relationship also ensures that the baffle frame will not block the erroneous signal caused by the infrared sensor.

[0018] The working method of the copper strip double-station unwinding device of the present invention realizes unlocking and locking of the guide chassis by retracting the working stations of the two locking cylinders and ejecting the material preparation stations, thereby ensuring that the output power of the second reduction motor is fully utilized. The electronic control system collects signals from the second proximity switch and the infrared sensor to determine whether to issue an alarm message, making the judgment more accurate, avoiding production line shutdown caused by operators forgetting to feed materials, and ensuring continuous and stable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the main structure of the copper strip double-station unwinding device of the present invention; Figure 2 It is a right side structural schematic diagram of the copper strip double-station unwinding device of the present invention; Figure 3 It is a right-side structural schematic diagram of the copper strip double-station unwinding device in working state of the present invention; Figure 4 This is a schematic diagram of the driving principle of the copper strip double-station unwinding device of the present invention; Figure 5 It is a perspective structural diagram of the distal pin seat of the present invention; Figure 6 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction.

[0021] Explanation of the reference numerals in the accompanying drawings: 1. Frame; 101. Base; 102. Extended base plate; 2. Slewing support bearing; 3. First reduction motor; 4. Work table; 401. Lower support plate; 5. Bearing seat; 6. Spindle; 7. Clamping mechanism; 701. Guide chassis; 702. Sleeve arc plate; 703. Baffle frame; 704. Slider; 705. Locking hole; 706. Induction block; 8. Second reduction motor; 9. Differential; 10. Locking assembly; 11. First proximity switch; 12. Pressure wheel; 13. Swing arm; 14. Far end pin shaft seat; 1401. Arc-shaped long hole; 15. Cylinder; 16. Second proximity switch; 17. Infrared sensor; 18. Copper flat mother tape. DETAILED DESCRIPTION

[0022] The core of the present invention is to provide a double-station unwinding device for copper strips, which uses a differential to centrally drive the reels on both sides to drive the main shaft, thereby realizing a set of reduction motors to alternately drive the copper flat mother tape clamping mechanisms on both sides.

[0023] 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.

[0024] 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.

[0025] With reference to the accompanying drawings, Figure 1 This is a schematic diagram of the main structure of the copper strip double-station unwinding device of the present invention; Figure 2 It is a right side structural schematic diagram of the copper strip double-station unwinding device of the present invention; Figure 3 It is a right-side structural schematic diagram of the copper strip double-station unwinding device in working state of the present invention; Figure 4 This is a schematic diagram of the driving principle of the copper strip double-station unwinding device of the present invention; Figure 5 It is a perspective structural diagram of the distal pin seat of the present invention; Figure 6 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction.

[0026] In a specific embodiment, Figures 1 to 6 As shown, a copper strip double-station unwinding device comprises: The frame 1 includes a cross-shaped base 101 and an upper cylinder. The base 101 is formed by cross-welding of H-shaped steel and is placed flat on the workshop floor. The cylinder is a vertically arranged cylinder and the bottom is welded to the middle position of the base 101 through a transition plate. A slewing support bearing 2 is coaxially assembled on the top of the cylinder, and an outer gear ring is arranged on the outer wall of the outer ring of the slewing support bearing 2. A workbench 4 is installed on the outer ring of the slewing support bearing 2, and a first reduction motor 3 is installed on the outer wall of the cylinder through a support plate. The pinion at the main shaft output end of the first reduction motor 3 is meshed with the outer gear ring of the slewing support bearing 2. The first reduction motor 3 is electrically connected to the electronic control system of the equipment.

[0027] The unwinding arm assembly includes a bearing seat 5, a main shaft 6 and a clamping mechanism 7. The main shaft 6 is horizontally rotatably mounted on the workbench 4 through two bearing seats 5, and the cantilever end of the main shaft 6 is provided with a clamping mechanism 7 for clamping the copper flat mother tape 18 material roll. The workbench 4 is a horizontally placed rectangular sheet material, and two sets of unwinding arm assemblies are symmetrically and coaxially arranged at both ends of the top surface of the workbench 4.

[0028] The differential 9 is centrally mounted on the middle of the top surface of the workbench 4. The two output ends of the differential 9 are respectively output to the two main shafts 6. The input end of the differential 9 is connected to the second reduction motor 8. The driving gear output by the second reduction motor 8 drives the planet carrier to rotate. Figure 4 As shown, the differential 9 is similar to the planetary gear differential in the axle, and will not be described in detail here.

[0029] The locking assembly 10 includes two sets of locking assemblies 10, which are respectively arranged directly below the cantilever end of the main shaft 6. The locking assembly 10 is installed on the bottom surface of the workbench 4 through a support plate seat, the root of the support plate seat is installed on the bottom surface of the workbench 4 through screws, and the locking assembly 10 is installed on the vertical plate of the support plate seat. The working end of the locking assembly 10 can circumferentially lock the clamping mechanism 7 to prevent the clamping mechanism 7 from rotating.

[0030] The first reduction motor 3 drives the outer ring of the slewing support bearing 2 to rotate and drive the worktable 4 to achieve a reciprocating 180-degree rotation, so that the two unwinding arm groups can switch back and forth between the working station and the material preparation station, avoiding the downtime of material change and improving production efficiency. The second reduction motor 8 and the differential 9 are centrally arranged between the two main shafts 6, which can switch and drive the two unwinding arm groups, so that one set of power units can drive two sets of working ends, simplifying the structure and reducing the equipment investment cost. By using the locking assembly 10 to lock the clamping mechanism 7 of the material preparation station, the power output by the differential 9 is fully transmitted to the clamping mechanism 7 of the working station, driving the copper flat mother tape 18 to unwind the material roll, that is, ensuring that the clamping mechanism 7 of the material preparation station does not rotate, and the clamping mechanism 7 of the working station obtains all the power, realizing a one-to-two controllable switching. The copper strip double-station unwinding device of the present invention uses a differential to centrally drive the reel drive spindles on both sides, so that a set of reduction motors alternately drives the clamping mechanism 7 of the copper flat mother tape 18 on both sides.

[0031] In a specific embodiment of the present invention, Figures 1 to 3 and Figure 6 As shown, the clamping mechanism 7 includes a guide chassis 701, a sleeve arc plate 702, a baffle frame 703 and a slider 704. The guide chassis 701 is coaxially mounted on the cantilever end of the main shaft 6 through flange bolts, and four sleeve arc plates 702 are evenly distributed on the outer wall of the guide chassis 701. The inner end of the sleeve arc plate 702 is slidably connected to the radial waist hole of the guide chassis 701 through a slider 704. A tensioning assembly is arranged on the inner side of the sleeve arc plate 702. The tensioning assembly described here is consistent with that in the prior art. It can be tightened manually with a nut or with a cylinder drive, and will not be described here. Two baffle frames 703 are mounted on each sleeve arc plate 702, and the baffle frames 703 limit the inner and outer walls of the copper flat mother tape 18 roll.

[0032] Specifically, if Figures 1 to 4 As shown, the tensioning diameters of the four sleeve arc plates 702 are Φ385-Φ405 mm, which can provide effective tensioning support for the center hole of the copper flat mother tape 18 roll.

[0033] Specifically, if Figures 1 to 4 As shown, the baffle frame 703 is formed by bending and welding a narrow steel strip, and is generally a triangular shape with a larger inside and a smaller outside. The barbs at the root are hooked on the bottom surfaces of the two side edges of the sleeve arc plate 702, and the top wall of the sleeve arc plate 702 is pushed up using a top screw, and then the baffle frame 703 is locked on the sleeve arc plate 702.

[0034] By tightening the middle hole of the copper flat mother tape 18 coil through four sleeve arc plates 702, the coil can be effectively clamped. At the same time, the baffle frame 703 limits the inner and outer side walls of the coil to prevent tilting and loosening. The baffle frame 703 adopts a top screw locking method to facilitate disassembly and installation.

[0035] In a specific embodiment of the present invention, Figure 1 , Figure 4 and Figure 6 As shown, the locking assembly 10 includes a locking cylinder and a latch, the end flange of the locking cylinder is mounted on the support plate seat, and the piston rod end of the locking cylinder facing outward is coaxially fixedly connected to the latch. A locking hole 705 is provided on the inner side wall of the guide chassis 701, and the latch can be inserted into the locking hole 705. The air supply solenoid valve of the locking cylinder is electrically connected to the electronic control system of the device.

[0036] Specifically, if Figure 4 and Figure 6 As shown, the top end of the latch pin is configured as a ball head, and the outer edge of the locking hole 705 is configured with a chamfer.

[0037] The locking assembly 10 specifically uses the locking cylinder and the latch, which are inserted into the locking hole 705 to lock the guide chassis 701 of the material preparation station, and the locking is reliable and will not loosen. The top of the latch is set as a ball head and the outer edge of the locking hole 705 is chamfered, so that the latch can be smoothly guided and inserted into the locking hole 705.

[0038] Obviously, the locking assembly 10 can also use a disc brake method to circumferentially lock the clamping mechanism 7, which requires coaxial installation of a brake disc on the spindle 6, and a cylinder-driven brake is used to clamp the brake disc to achieve braking. Similar simple replacement methods also fall within the scope of protection of the present invention.

[0039] Specifically, if Figure 4 and Figure 6As shown, the copper strip double-station unwinding device of the present invention also includes a first proximity switch 11, which is installed on the support plate seat and is located directly below the locking cylinder. A sensing block 706 is provided directly below the locking hole 705. The first proximity switch 11 can capture the passing signal of the magnetic sensing block 706, and the first proximity switch 11 feeds back the signal to the electronic control system of the equipment.

[0040] When the first proximity switch 11 feeds back a signal to the electronic control system indicating that the sensing block 706 has reached its position, the electronic control system controls the air supply solenoid valve of the locking cylinder to open, the locking cylinder is pushed out, and the latch is inserted into the locking hole 705 to lock the guide chassis 701, thereby improving the locking accuracy.

[0041] In a specific embodiment of the present invention, Figures 1 to 3 and Figure 5 As shown, the copper strip double-station unwinding device of the present invention further includes a clamping wheel assembly, which is arranged on the frame 1 and can clamp and prevent the copper flat mother strip 18 material roll clamped by the clamping mechanism 7 of the working station from loosening.

[0042] Specifically, if Figures 1 to 3 and Figure 5 As shown, the clamping wheel assembly includes a clamping wheel 12, a swing arm 13, a distal pin seat 14 and a cylinder 15. A horizontally arranged extension base plate 102 is welded on one side of the base 101, and the distal pin seat 14 is installed on the outer end of the extension base plate 102. The distal pin seat 14 supports the bottom pin of the swing arm 13. Note that the pin is not located at the bottom of the swing arm 13 but at the bottom position close to the bottom end. The clamping wheel 12 is rotatably installed at the top of the swing arm 13, and the outer wheel surface of the clamping wheel 12 can roll and contact the outer wall of the copper flat master tape 18 roll. The outer wheel of the clamping wheel 12 is made of polytetrafluoroethylene plastic material to avoid indentation on the copper flat master tape 18. The middle part of the cylinder 15 is installed on the middle top surface of the extension base plate 102 through a hinge support, and the pin at the end of the piston rod of the cylinder 15 is connected to the bottom end of the swing arm 13.

[0043] By adding the clamping wheel group, the outer wall of the copper flat tape 18 roll at the work station can be continuously clamped to avoid loose rolls during the unwinding process; by the cylinder 15 pushing the swing arm 13 to swing, the clamping wheel 12 can be continuously close to the sleeve arc plate 702 during the unwinding process and is always in a clamped state.

[0044] Specifically, if Figures 1 to 3 and Figure 5As shown, an arc-shaped long hole 1401 is provided on the ear plate of the distal pin shaft seat 14, and the edge center of the arc-shaped long hole 1401 is located on the axis center line of the pin shaft at the bottom of the swing arm 13. A second proximity switch 16 is installed on the arc-shaped long hole 1401, and the second proximity switch 16 can collect the signal that the copper flat mother tape 18 material roll is about to be unloaded and feed it back to the electronic control system of the equipment. In other words, as the cylinder 15 continues to push up, the bottom end of the swing arm 13 gradually swings outward around the axis center line of the pin shaft, and when the unloading is about to be completed, the bottom end of the swing arm 13 triggers the second proximity switch 16.

[0045] Specifically, if Figure 1 and Figure 2 As shown, the copper strip double-station unwinding device of the present invention further includes an infrared sensor 17, the radial angle of the locking hole 705 on the guide chassis 701 is located in the middle of two adjacent sleeve arc plates 702, and the infrared sensor 17 is installed on the support plate seat and is located directly below the first proximity switch 11. The distance between the infrared sensor 17 and the axial centerline of the guide chassis 701 is greater than the radius of the guide chassis 701. The infrared sensor 17 can feed back a signal of whether a new copper flat mother tape 18 roll is installed or not to the electronic control system of the device.

[0046] By setting the second proximity switch 16, the signal indicating that the copper flat mother tape 18 roll is about to be unloaded can be collected and fed back to the electronic control system of the equipment, which plays the role of early warning for material change; by setting the infrared sensor 17, it can be fed back whether the operator has unloaded the roll to the material preparation station in time, which also plays the role of early warning for material change. Moreover, the radial angle of the locking hole 705 on the guide chassis 701 is located in the middle of the two adjacent sleeve arc plates 702, which can ensure that the opening of the two adjacent sleeve arc plates 702 is directly above the tensioning sleeve, which is convenient for the operator to use the sling to hoist the copper flat mother tape 18 roll, and to clear the position of the sling, which is convenient for feeding the roll and removing the sling. At the same time, this angle relationship also ensures that the baffle frame 703 will not block the erroneous signal caused by the infrared sensor 17.

[0047] In summary, the copper strip double-station unwinding device of the present invention drives the outer ring of the slewing support bearing 2 to rotate by the first reduction motor 3 to drive the worktable 4 to achieve a reciprocating 180-degree rotation, so that the two unwinding arm groups can switch back and forth between the working station and the material preparation station, avoiding the material change downtime and improving production efficiency. The second reduction motor 8 and the differential 9 are centrally arranged between the two main shafts 6, which can switch and drive the two unwinding arm groups, so that one set of power units can drive two sets of working ends, simplifying the structure and reducing the equipment investment cost. By adopting the locking assembly 10 to lock the loading mechanism 7 of the material preparation station, the power output by the differential 9 is fully transmitted to the loading mechanism 7 of the working station, driving the copper flat mother tape 18 to unwind the material, that is, ensuring that the loading mechanism 7 of the material preparation station does not rotate, and the loading mechanism 7 of the working station obtains all the power, realizing a controllable switching of one to two. The copper strip double-station unwinding device of the present invention adopts a differential to centrally drive the reel drive spindles on both sides, realizing a set of reduction motors to alternately drive the clamping mechanism 7 of the copper flat mother tape 18 on both sides. In addition, the four sleeve arc plates 702 are used to tighten the center hole of the copper flat mother tape 18 material roll, so that the material roll can be effectively clamped, and at the same time, the baffle frame 703 limits the inner and outer side walls of the material roll to prevent tilting and loosening; the baffle frame 703 adopts a top screw locking method, which is easy to disassemble and install. The locking assembly 10 specifically adopts the locking cylinder and the latch, which are inserted into the locking hole 705 to realize the locking of the guide chassis 701 of the material preparation station, and the locking is reliable and will not loosen. The top end of the latch is set as a ball head and the outer edge of the locking hole 705 is chamfered, so that the latch can be smoothly guided and inserted into the locking hole 705. By adding the clamping wheel group, the outer wall of the copper flat tape 18 roll at the work station can be continuously clamped to avoid loose rolls during the unwinding process; by the cylinder 15 pushing the swing arm 13 to swing, the clamping wheel 12 can be continuously close to the sleeve arc plate 702 during the unwinding process and is always in a clamping state. By setting the second proximity switch 16, the signal of the copper flat tape 18 roll being quickly unwound can be collected and fed back to the electronic control system of the equipment, which plays the role of material change warning; by setting the infrared sensor 17, it can feedback whether the operator has unwound the roll to the material preparation station in time, which also plays the role of material change warning. Moreover, the radial angle of the locking hole 705 on the guide chassis 701 is located in the middle of the two adjacent sleeve arc plates 702, which can ensure that the gap between the two adjacent sleeve arc plates 702 is directly above the tensioning sleeve, making it convenient for operators to use the sling to hoist the copper flat mother tape 18 material roll and clear the position of the sling to facilitate the feeding and removal of the sling. At the same time, this angle relationship also ensures that the baffle frame 703 will not block the erroneous signal caused by the infrared sensor 17.

[0048] The present invention also discloses a working method of a copper strip double-station unwinding device, wherein the copper strip double-station unwinding device in the above embodiment is used to unwind 18 copper flat mother strips, and during the unwinding operation: The unwinding arm group at the working station works, the corresponding locking cylinder is in the retracted state, the second reduction motor 8 outputs power to the differential 9, the differential 9 drives the main shaft 6 on one side to rotate, and the clamping mechanism 7 at the working station drives the copper flat mother tape 18 to actively unwind the material roll. The electronic control system controls the speed of the second reduction motor 8 to adjust the unwinding speed.

[0049] At this time, the unwinding arm group at the other end is in the material preparation position and does not work. The corresponding locking cylinder is pushed out, and the latch can be inserted into the locking hole 705 to lock the guide chassis 701. In a stable state, it is convenient to disassemble the outer baffle frame 703 and load the spare copper flat mother tape 18 material roll.

[0050] The unlocking and locking of the guide chassis 701 are achieved by retracting the two locking cylinder working stations and ejecting the material preparation station, thereby ensuring that the output power of the second reduction motor 8 is fully utilized.

[0051] In a specific embodiment of the present invention, Figure 3 As shown, the copper flat tape 18 roll at the working station is pressed by the clamping wheel assembly, and the electronic control system controls the electromagnetic pneumatic valve to operate, so that the cylinder 15 is ejected, pushing the bottom end of the swing arm 13, and the top end of the swing arm 13 moves toward the copper flat tape 18 roll at the working station, and the clamping wheel 12 is pressed on the outer wall of the copper flat tape 18 roll.

[0052] When the bottom end of the swing arm 13 triggers the second proximity switch 16, the signal that the copper flat mother tape 18 material roll is quickly unwound is transmitted to the electronic control system of the equipment. When the electronic control system fails to collect the signal that the material is ready from the infrared sensor 17 of the material preparation station, an alarm message is sent to the touch screen to prompt material preparation, and an audible and visual alarm is also issued.

[0053] The electronic control system collects signals from the second proximity switch 16 and the infrared sensor 17 to determine whether to issue an alarm, making the judgment more accurate, thus avoiding production line shutdowns caused by operators forgetting to feed materials, and ensuring continuous and stable operation of the system.

[0054] The working method of the copper strip double-station unwinding device of the present invention is to switch the materials between the working station and the material preparation station: when the copper flat tape 18 roll on the clamping mechanism 7 originally at the working station is about to be put out, the second proximity switch 16 is triggered, and the electric control system controls the electromagnetic pneumatic valve to operate, so that the cylinder 15 contracts, pulls back the bottom end of the swing arm 13, and the top end of the swing arm 13 swings backward, and the clamping wheel 12 leaves the outer wall of the copper flat tape 18 roll. After the copper flat tape 18 roll is put out, the operator controls the control panel of the electric control system, the first reduction motor 3 is started, and the outer ring of the slewing support bearing 2 is driven to rotate to drive the work table 4 to achieve a 180-degree rotation. The two unwinding arm groups complete the switching between the working station and the material preparation station. The second reduction motor 8 rotates at a low speed, driving the guide chassis 701 at the material preparation station to rotate slowly. When the first proximity switch 11 feeds back the signal that the induction block 706 is in place to the electronic control system, the electronic control system controls the second reduction motor 8 to stop, the air supply solenoid valve of the locking cylinder is opened, the locking cylinder is pushed out, and the latch is inserted into the locking hole 705 to lock the guide chassis 701. Then, the electronic control system controls the locking cylinder at the working station to retract, and the latch exits the locking hole 705 to unlock the guide chassis 701. The operator manually pulls the end of the copper flat master tape 18 to the welding machine station for jointing, and then controls the control panel of the electronic control system, the cylinder 15 is pushed out, and the bottom end of the swing arm 13 is pushed out, and the top end of the swing arm 13 moves toward the copper flat master tape 18 roll at the working station, and the clamping wheel 12 is pressed on the outer wall of the copper flat master tape 18 roll, and the second reduction motor 8 is started to start normal tape unwinding.

[0055] In summary, the working method of the copper strip double-station unwinding device of the present invention realizes unlocking and locking of the guide chassis 701 by retracting the working stations of the two locking cylinders and ejecting the material preparation stations, thereby ensuring that the output power of the second reduction motor 8 is fully utilized. The electronic control system collects signals from the second proximity switch 16 and the infrared sensor 17 to determine whether to issue an alarm message, and the judgment is more accurate, avoiding the production line shutdown caused by the operator forgetting to feed materials, and ensuring the continuous and stable operation of the system.

[0056] 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.

[0057] 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 copper strip double-station unwinding device, characterized in that: include: The frame (1) comprises a cross-shaped base (101) and an upper cylinder, a slewing bearing (2) is coaxially mounted on the top of the cylinder, a workbench (4) is mounted on the outer ring of the slewing bearing (2), a first reduction motor (3) is mounted on the outer wall of the cylinder via a support plate, and a pinion gear at the main shaft output end of the first reduction motor (3) meshes with the outer gear ring of the slewing bearing (2); An unwinding arm assembly comprises a bearing seat (5), a main shaft (6) and a clamping mechanism (7); the main shaft (6) is horizontally rotatably mounted on the work table (4) via two bearing seats (5); a clamping mechanism (7) for clamping a copper flat mother tape (18) coil is arranged at the cantilever end of the main shaft (6); two sets of the unwinding arm assembly are symmetrically and coaxially arranged at the two ends of the top surface of the work table (4); A differential (9) is centrally mounted in the middle of the top surface of the worktable (4), the two output ends of the differential (9) are respectively output to the two main shafts (6), and the input end of the differential (9) is connected to a second reduction motor (8); The locking components (10) are provided in two groups and are respectively arranged directly below the cantilever end of the main shaft (6); the locking components (10) are installed on the bottom surface of the workbench (4) via a support plate seat, and the locking components (10) are capable of circumferentially locking the clamping mechanism (7).

2. The copper strip double-station unwinding device according to claim 1 is characterized in that: The clamping mechanism (7) comprises a guide chassis (701), a sleeve arc plate (702), a baffle frame (703) and a slider (704); the guide chassis (701) is mounted on the cantilever end of the main shaft (6) by means of flange bolts; four sleeve arc plates (702) are evenly distributed on the outer wall of the guide chassis (701) in a circumference; the inner end of the sleeve arc plate (702) is slidably connected to the radial waist hole of the guide chassis (701) by means of a slider (704); a tensioning assembly is arranged on the inner side of the sleeve arc plate (702); two baffle frames (703) are mounted on each sleeve arc plate (702); the baffle frames (703) limit the side wall of the copper flat mother tape (18) roll.

3. The copper strip double-station unwinding device according to claim 2 is characterized in that: The baffle frame (703) is formed by bending a narrow steel strip and then welding it. The overall shape is a triangle with a larger inner side and a smaller outer side. The barbs at the root of the baffle frame (703) are hooked on the bottom surfaces of both sides of the sleeve arc plate (702). The baffle frame (703) is clamped on the sleeve arc plate (702) by pushing the top wall of the sleeve arc plate (702) through a push screw.

4. The copper strip double-station unwinding device according to claim 2 is characterized in that: The locking assembly (10) comprises a locking cylinder and a latch, wherein the end flange of the locking cylinder is mounted on the support plate seat, and the outward piston rod end of the locking cylinder is coaxially fixedly connected to the latch; a locking hole (705) is provided on the inner side wall of the guide chassis (701), and the latch can be inserted into the locking hole (705).

5. The copper strip double-station unwinding device according to claim 4 is characterized in that: It also includes a first proximity switch (11), which is mounted on the support plate seat and is located directly below the locking cylinder. A sensing block (706) is provided directly below the locking hole (705). The first proximity switch (11) feeds back a signal to the electronic control system of the device.

6. The copper strip double-station unwinding device according to claim 5, characterized in that: It also includes a clamping wheel assembly, which is arranged on the frame (1) and is capable of clamping and preventing the copper flat mother tape (18) roll clamped by the clamping mechanism (7) at the working station from loosening.

7. The copper strip double-station unwinding device according to claim 6, characterized in that: The clamping wheel assembly comprises a clamping wheel (12), a swing arm (13), a distal pin shaft seat (14) and a cylinder (15); one side of the base (101) is fixedly connected to a horizontally arranged extension base plate (102); the distal pin shaft seat (14) is mounted on the outer end of the extension base plate (102); the distal pin shaft seat (14) supports the bottom pin shaft of the swing arm (13); the clamping wheel (12) is rotatably mounted on the top of the swing arm (13); the outer wheel surface of the clamping wheel (12) is capable of rolling contact with the outer wall of the copper flat master tape (18) roll; the middle part of the cylinder (15) is mounted on the extension base plate (102) through a hinge support; the piston rod end pin of the cylinder (15) is connected to the bottom end of the swing arm (13).

8. The copper strip double-station unwinding device according to claim 7, characterized in that: An arc-shaped long hole (1401) is provided on the ear plate of the distal pin shaft seat (14), and the center of the arc-shaped long hole (1401) is located on the axis of the pin shaft at the bottom of the swing arm (13); a second proximity switch (16) is installed on the arc-shaped long hole (1401), and the second proximity switch (16) can collect the signal of the completion of the fast unwinding of the copper flat mother tape (18) and feed it back to the electronic control system of the equipment; It also includes an infrared sensor (17), the radial angle of the locking hole (705) is located in the middle of two adjacent sleeve arc plates (702), the infrared sensor (17) is installed on the support plate seat and is located directly below the first proximity switch (11); the axial centerline distance between the infrared sensor (17) and the guide chassis (701) is greater than the radius of the guide chassis (701); the infrared sensor (17) can feed back a signal to the electronic control system of the equipment whether a new copper flat mother tape (18) roll is installed or not.

9. A working method of a copper strip double-station unwinding device, characterized in that: The copper strip double-station unwinding device according to claim 8 is used to carry out the unwinding operation of the copper flat mother strip (18) material roll. During the unwinding operation: the unwinding arm group at the working station works, the corresponding locking cylinder is in a retracted state, the second reduction motor (8) outputs power to the differential (9), the differential (9) drives the main shaft (6) to rotate, and the clamping mechanism (7) drives the copper flat mother strip (18) material roll to actively unwind; The unwinding arm assembly at the other end does not work, the corresponding locking cylinder is pushed out, and the latch can be inserted into the locking hole (705).

10. The working method of the copper strip double-station unwinding device according to claim 9, characterized in that: The copper flat master tape (18) roll at the working station is pressed by the pressure wheel assembly, the cylinder (15) is pushed out, pushing the bottom end of the swing arm (13), the top end of the swing arm (13) moves toward the copper flat master tape (18) roll at the working station, and the pressure wheel (12) is pressed against the outer wall of the copper flat master tape (18) roll; When the bottom end of the swing arm (13) triggers the second proximity switch (16), a signal indicating that the copper flat mother tape (18) roll has been quickly unwound is transmitted to the electronic control system of the equipment. When the electronic control system fails to collect a signal indicating that the material preparation is ready from the infrared sensor (17) at the material preparation station, an alarm message is issued to prompt material preparation.

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