Coiling machine directly driven by motor

Abstract

The invention discloses a coiling machine directly driven by a motor, and belongs to the technical field of coiling equipment. The coiling machine directly driven by the motor comprises a coiling block, wherein the coiling block comprises a hollow shaft; the transmission mechanism is fixed on the driving side of the hollow shaft, the transmission mechanism is connected with the driving motor through the brake disc coupling, and the central axes of all the components are coaxial. The transmission mechanism adopts two implementation schemes, and the main shaft is driven to slide to achieve expansion and shrinkage of the sector plate through cooperation of an expansion component and a shrinkage component or cooperation of a rotary hydraulic cylinder and a rotary oil feeder.

Description

Technical Field

[0001] This invention relates to the field of winding equipment technology, and in particular to a direct-drive motor winding machine. Background Technology

[0002] Winding machines are core equipment in industrial production used for winding various continuous materials, and their performance directly affects production efficiency and product quality. Currently, most existing winding machines use an indirect transmission method involving a motor, coupling, reducer, and drum. This transmission structure suffers from problems such as a long transmission chain, high energy loss, and system response lag, making it difficult to meet the demands for high-precision and high-efficiency winding. Meanwhile, while some direct-drive winding machines shorten the transmission chain, they have shortcomings in the drum expansion and contraction structure design, such as unstable expansion and contraction of the sector plates and low positioning accuracy. This leads to easy deviation of the winding material and uneven winding tension during the winding process, affecting product quality.

[0003] Furthermore, existing winding machines mostly use ordinary rigid or flexible couplings, lacking braking functionality. An additional braking device is required when the machine stops, increasing the complexity of the equipment structure and the space it occupies. Simultaneously, the unreasonable design of the drum's support structure leads to poor stability during operation, making the equipment prone to vibration and affecting its service life. For example, patent document CN121566844A discloses a direct-drive motor and winding device for a drum, which improves response efficiency by integrating the motor and drum into one unit. However, it does not address the corresponding cooperation structure between the wedge assembly and the sector plate, making it difficult to achieve precise expansion and contraction of the sector plate. Patent document CN207026175U discloses a winding machine drum that uses a wedge shaft and plunger assembly to achieve sector plate expansion and contraction, but it employs an indirect transmission method, resulting in an inherently long transmission chain. Summary of the Invention

[0004] 1. The problem to be solved

[0005] In view of at least some of the problems existing in the prior art, the present invention proposes a motor direct-drive winding machine, which achieves efficient and stable operation of the winding machine by optimizing the transmission structure and expansion and contraction structure.

[0006] 2. Technical Solution To solve the above problems, the technical solution adopted by the present invention is as follows: This invention provides a direct-drive winding machine for winding metal coils, comprising a drum for winding metal coils, a brake disc coupling, a drive motor, and a transmission mechanism. The drum includes a hollow shaft, and the drive side of the hollow shaft is fixedly connected to the transmission mechanism. The transmission mechanism is connected to the drive motor via the brake disc coupling. The central axes of the hollow shaft, the brake disc coupling, the drive motor, and the transmission mechanism are coaxially arranged. The metal coil includes aluminum plates, steel plates, etc.

[0007] The aforementioned direct drive is a transmission technology in which a drive motor directly drives the movement of the actuator without the need for intermediate mechanical transmission links. By optimizing the design of the drive motor, it enables it to have sufficient low-speed, high-torque output capability, thereby achieving direct coupling between the output shaft of the drive motor and the load. The drive motor includes a direct drive rotary motor (torque motor) or a direct drive linear motor (linear motor).

[0008] Furthermore, as a first preferred embodiment of the present invention, the roll is a hot-rolled roll or a cold-rolled structural roll, wherein the hollow shaft of the hot-rolled roll has a plurality of sector plates evenly distributed on its outer circumference, and the hollow shaft has a hollow hole extending along its axial direction inside, a main shaft is slidably connected in the hollow hole, and a plurality of wedge surface groups are evenly distributed on the circumferential surface of the main shaft, each of the plurality of wedge surface groups corresponding to a plurality of sector plates, and the wedge surface group includes a plurality of wedge surfaces arranged along the axial direction of the main shaft; a support bearing is installed on the hollow shaft.

[0009] Furthermore, as a first preferred embodiment of the present invention, the transmission mechanism includes an expanding component and a shrinking component. The expanding component is used to provide an elastic force to drive the main shaft to slide, thereby expanding the sector plate. The shrinking component is used to extend after winding is completed, and can push the main shaft to slide in the opposite direction, thereby shrinking the sector plate to achieve unwinding.

[0010] Specifically, the expansion component includes a base, a positioning block, a screw, an expansion spring, a sliding seat, and a pin. The base is sleeved with the hollow shaft and laterally positioned and fixed by the positioning block. The sliding seat is hollow, with several copper sleeves on its inner sidewall. The sliding seat is fitted onto the hollow shaft and can slide along the surface of the hollow shaft. The screw is fitted with an expansion spring, one end of which is connected to the base, and the other end is connected to the sliding seat, so that the expansion spring is located between the base and the sliding seat. The hollow shaft has an oblong hole along the axial direction, and the length of the oblong hole is greater than the maximum stroke distance of the reduction component. The pin passes through the sliding seat, the hollow shaft, and the main shaft, and can slide along the oblong hole. The pin is fixed to the sliding seat and the main shaft.

[0011] More specifically, the sliding seat is provided with an oil inlet hole A, which is connected to the copper sleeve. The oil inlet hole A is fitted with an oil cup to provide lubricating oil to the copper sleeve, reduce the friction between the sliding seat and the hollow shaft, extend the service life of the component, and ensure the smooth sliding of the sliding seat.

[0012] Specifically, the shrinking component includes a shrinking cylinder, one structure of which includes a cylinder body A and a piston rod A. The cylinder body A is fixed to the ground. The piston rod A is placed in the cylinder body A. The hollow shaft can pass through the piston rod A and is connected to the brake disc coupling. By extending and retracting the shrinking cylinder, the main shaft slides in the opposite direction, thereby completing the shrinking and unwinding of the sector plate.

[0013] Another structure: the number of reducing cylinders is at least two, the two reducing cylinders are arranged around the hollow shaft, and the sliding seat is moved by the two reducing cylinders.

[0014] Furthermore, as a second preferred embodiment of the present invention, the transmission mechanism includes a connecting shaft, a rotary hydraulic cylinder, and a rotary oiler. One end of the connecting shaft is connected to the rotary hydraulic cylinder, and the other end is connected to the brake disc coupling. The rotary oiler is mounted on the connecting shaft and is used to provide power to the rotary hydraulic cylinder. The rotary hydraulic cylinder is connected to the end of the main shaft away from the sector plate and rotates synchronously with the hollow shaft to push the main shaft to slide axially along the hollow hole, thereby realizing the expansion and contraction of the sector plate.

[0015] Specifically, the rotary hydraulic cylinder includes a cylinder body B, a piston rod B, an end cover flange, and a connecting flange. One end of the connecting flange is connected to a fixed flange on the hollow shaft, and the other end is connected to the end cover flange. The piston rod B passes through the end cover flange and is connected to the main shaft. Several sealing components are provided between the piston rod B and the end cover flange to ensure the sealing performance of the rotary hydraulic cylinder and prevent hydraulic oil leakage.

[0016] More specifically, the connecting shaft is provided with hydraulic oil hole B and hydraulic oil hole A. Hydraulic oil hole B is connected to the first inner cavity of the cylinder body B. Hydraulic oil hole C is provided on the cylinder body B. Hydraulic oil hole C is connected to the second inner cavity of the cylinder body B and hydraulic oil hole A. The rotary oil supply device, hydraulic oil hole B and the first inner cavity constitute the first oil circuit. The rotary oil supply device, hydraulic oil hole A, hydraulic oil hole C and the second inner cavity constitute the second oil circuit. Through the alternating oil supply of the two oil circuits, the reciprocating motion of the piston rod B is realized, thereby driving the main shaft to slide and controlling the expansion and contraction of the sector plate.

[0017] More specifically, a support frame fixed to the ground is provided on the connecting shaft. The support frame is located between the rotary oiler and the brake disc coupling to support the connecting shaft and the rotary oiler, ensuring the stability of the equipment operation and reducing vibration.

[0018] Furthermore, the support bearing adopts a self-aligning roller bearing, or a combination of a self-aligning roller bearing and a double-row tapered roller bearing. The self-aligning roller bearing and the double-row tapered roller bearing have the characteristics of simple structure, strong load-bearing capacity and high rotational accuracy, which can effectively support the rotation of the hollow shaft, ensure the stability of the winding process, and reduce the maintenance cost of the equipment.

[0019] Furthermore, the number of sector plates is 3-6, and there is a gap between adjacent sector plates. The gap can prevent deformation caused by mutual compression when the sector plates expand and contract, and at the same time facilitate the installation and disassembly of the sector plates. The number of sector plates of 3-6 can simplify the structure and reduce costs while ensuring the stability of winding. Among them, the preferred number of sector plates is 4, which takes into account both stability and economy.

[0020] Furthermore, the brake disc coupling, connecting components, and output shaft of the drive motor are all keyed. Keyed connections have the advantages of simple structure, reliable transmission, and convenient disassembly, which can ensure that the power of the drive motor is stably transmitted to the hollow shaft and reduce power loss. At the same time, the design with a brake disc can realize the rapid stopping of the equipment without the need for an additional braking device, simplifying the equipment structure, saving installation space, and improving the safety of the equipment.

[0021] 3. Beneficial effects Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The present invention uses a drive motor to directly drive the hollow shaft to rotate through a brake disc coupling, which eliminates intermediate transmission components such as reducers, shortens the transmission chain, reduces energy loss, and improves the system's response speed and control accuracy, enabling precise winding of the roll material and avoiding winding deviation. (2) By setting a set of inclined wedge surfaces on the main shaft that correspond one-to-one with the sector plates, when the main shaft slides along the hollow hole of the hollow shaft, the inclined wedge surfaces can smoothly push the sector plates to expand and contract radially. With the help of the sliding guide structure, it is ensured that the sector plates do not shift circumferentially during expansion and contraction, and the wound roll material is uniformly tight and neat at the edges, thus improving product quality. At the same time, the inclined wedge surfaces are arranged along the main shaft axis, which can make the sector plates bear force evenly and avoid component damage caused by local stress concentration. (3) The brake disc coupling of the present invention integrates transmission and braking functions, eliminating the need for additional braking devices, simplifying the equipment structure and saving installation space; the hollow shaft is supported at both ends by support bearings and end bearings, and the support structure is reasonable, which can effectively reduce vibration during equipment operation and improve the stability and service life of the equipment; the connecting parts adopt flange connection, which has good sealing performance, can prevent impurities from entering, and further extend the service life of the equipment. (4) By adjusting the sliding distance of the main shaft, the expansion and contraction of the sector plate can be precisely adjusted to meet the winding requirements of rolls of different thicknesses and diameters. The sector plate adopts a detachable design, which is convenient for maintenance and replacement, and reduces equipment maintenance costs. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a direct-drive winding machine according to the first embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the (expansion component + shrinkage component) in the first embodiment of the present invention; Figure 3 This is an enlarged view of the structure of the expansion component in the first embodiment of the present invention; Figure 4 for Figure 3 Cross-sectional view along line AA; Figure 5 This is a schematic diagram of the structure of a direct-drive winding machine according to the second embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the second embodiment of the present invention (rotary hydraulic cylinder + rotary oiler); Figure 7 This is an enlarged view of the second embodiment of the present invention (rotary hydraulic cylinder + rotary oiler); Explanation of markings in the diagram: 100. Drum; 110. Hollow shaft; 111. Hollow hole; 112. Fixed flange; 120. Sector plate; 130. Main shaft; 140. Wedge face assembly; 150. Support bearing; 160. Clamping flange; 200. Brake disc coupling; 300. Drive motor; 400. Transmission mechanism; 410. Expansion component; 411. Base; 412. Positioning block; 413. Screw; 414. Expansion spring; 415. Sliding seat; 4151. Copper sleeve; 4152. Waist-shaped hole; 4153. Oil inlet A; 4154. Oil cup; 416. Insert pin; 420. Reduction component; 421. Cylinder body A; 422. Piston rod A; 430. Connecting shaft; 431. Support frame; 440. Rotary hydraulic cylinder; 441. Cylinder body B; 4411. Hydraulic oil hole C; 442. Piston rod B; 443. End cover flange; 444. Connecting flange; 445. Sealing component; 450. Rotary oil feeder; 451. Hydraulic oil hole A; 452. Hydraulic oil hole B. Detailed Implementation

[0024] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Example 1 like Figures 1 to 4 As shown, this embodiment provides a direct-drive winding machine, including a drum 100, a brake disc coupling 200, a drive motor 300, and a transmission mechanism 400. The brake disc coupling 200 and the drive motor 300 can both be commercially available products or existing technologies. For example, the brake disc coupling 200 can be a brake disc drum gear coupling (the product disclosed in patent CN202323101470.0) and used in conjunction with a brake. The drive motor 300 can be the motor disclosed in CN121566844A.

[0026] The drum 100 includes a hollow shaft 110, on which four sector plates 120 are evenly distributed around its outer circumference. A gap of 2-3 mm is left between adjacent sector plates 120 to prevent them from squeezing and deforming each other when they expand and contract, and to facilitate installation and disassembly. The hollow shaft 110 has a hollow hole 111 extending along its axial direction inside. A main shaft 130 is slidably connected inside the hollow hole 111. Four sets of inclined wedge surfaces 140 are evenly distributed on the circumference of the main shaft 130. The four sets of inclined wedge surfaces 140 correspond one-to-one with the four sector plates 120. Each set of inclined wedge surfaces 140 includes two inclined wedge surfaces arranged along the axial direction of the main shaft 130. Through the guiding effect of the inclined wedge surfaces, the radial expansion and contraction of the sector plates 120 is realized when the main shaft 130 slides.

[0027] In this embodiment, a support bearing 150 is installed on the hollow shaft 110. The support bearing 150 is a self-aligning roller bearing, or a combination of a self-aligning roller bearing and a double-row tapered roller bearing. The combination of the self-aligning roller bearing and the double-row tapered roller bearing has a simple structure, strong load-bearing capacity, and high rotational accuracy, and is used to support the rotation of the hollow shaft 110.

[0028] Combination Figure 1 As shown, the drive side of the hollow shaft 110 is fixedly connected to the transmission mechanism 400 by bolts, and the transmission mechanism 400 is connected to the drive motor 300 through the brake disc coupling 200. The central axes of the hollow shaft 110, the brake disc coupling 200, the drive motor 300, and the transmission mechanism 400 are coaxially arranged to ensure the stability of power transmission, keep the vibration value within a controllable range, and reduce energy loss by about 10%. Extensive field use has shown that it can achieve precise winding of thin sheets, such as aluminum sheets, with a winding deviation reduction of 0.1%.

[0029] The first transmission mechanism 400 implementation scheme is adopted, such as... Figure 3 As shown, the transmission mechanism 400 includes an expansion component 410 and a shrinking component 420. The expansion component 410 is used to provide elastic force to drive the main shaft 130 to slide, so that the sector plate 120 expands. The shrinking component 420 is used to extend after winding is completed, push the main shaft 130 to slide in the opposite direction, so that the sector plate 120 shrinks to achieve unwinding.

[0030] Specifically, in this embodiment, such as Figure 3 and Figure 4 As shown, the expansion component 410 includes a base 411, a positioning block 412, a screw 413, an expansion spring 414, a sliding seat 415, and a pin 416. The base 411 is sleeved with the hollow shaft 110 and is laterally positioned and fixed by the positioning block 412. The positioning block 412 adopts a pin connection to ensure the relative fixation of the base 411 and the hollow shaft 110. The sliding seat 415 is hollow, and two copper sleeves 4151 are provided on its inner sidewall. The sliding seat 415 is fitted onto the hollow shaft 110 and can slide along the surface of the hollow shaft 110. An expansion spring 414 is fitted onto the screw 413. One end of the expansion spring 414 is connected to the base 411 by a nut, and the other end is connected to the sliding seat 415 by a nut, so that the expansion spring 414 is located between the base 411 and the sliding seat 415. When the expansion spring 414 is in its natural state, it pushes the sliding seat 415 to slide away from the base 411.

[0031] When the winding machine experiences an emergency stop, a change in operating conditions, or a sudden pressure relief and force cutoff, the sliding seat can be automatically reset to its initial working position by relying on the natural rebound thrust of the expansion spring. No manual adjustment is required, ensuring normal engagement and stable operation of the equipment when it is started up next time.

[0032] Furthermore, extensive field use has revealed that when small radial offsets occur due to uneven material loading or force distribution during coiler operation, the copper sleeve inside the sliding seat can reduce wear during the reciprocating sliding of the hollow shaft. Simultaneously, when the coiler operates continuously at high temperatures or experiences large temperature fluctuations during intermittent operation, especially in summer when the factory temperature remains above 35°C, components such as the hollow shaft, metal sliding seat, and base will experience thermal expansion or contraction. The aforementioned sliding seat can slide freely along the axial direction of the hollow shaft, and in conjunction with the copper sleeve sliding fit structure, it can adaptively compensate for axial dimensional differences caused by thermal deformation of various parts, avoiding shaft stiffness issues.

[0033] In this embodiment, the hollow shaft 110 has an oblong hole 4152 along the axial direction. The length of the oblong hole 4152 is greater than the maximum stroke distance of the reduction component 420, ensuring the sliding space of the insert pin 416. The insert pin 416 passes through the sliding seat 415, the hollow shaft 110 and the main shaft 130, and can slide along the oblong hole 4152. The insert pin 416 is fixed with the sliding seat 415 and the main shaft 130 by interference fit, so that the sliding of the sliding seat 415 can synchronously drive the sliding of the main shaft 130.

[0034] In this embodiment, the sliding seat 415 is provided with an oil inlet hole A4153, which is connected to the copper sleeve 4151. The oil inlet hole A4153 is fitted with an oil cup 4154, which is filled with lubricating oil (e.g., thin lubricating oil). The oil inlet hole A4153 provides lubricating oil to the copper sleeve 4151, reducing the friction between the sliding seat 415 and the hollow shaft 110, ensuring the smooth sliding of the sliding seat 415, and extending the service life of the component.

[0035] In this embodiment, the shrinking component 420 includes a shrinking cylinder, which includes a cylinder body A421 and a piston rod A422. The cylinder body A421 is fixed to the ground by anchor bolts. The piston rod A422 is placed in the cylinder body A421. The hollow shaft 110 can pass through the piston rod A422 and is connected to the brake disc coupling 200. When the piston rod A422 extends, it can push the sliding seat 415 to slide closer to the base 411, thereby driving the main shaft 130 to slide in the opposite direction, realizing the shrinkage of the sector plate 120.

[0036] In this embodiment, the brake disc coupling 200, the base 411 of the transmission mechanism 400, and the output shaft of the drive motor 300 are all connected by a flat key. The flat key connection structure is simple, reliable, and easy to disassemble, which enables the power of the drive motor 300 to be stably transmitted to the hollow shaft 110. At the same time, the design with a brake disc can realize the quick stop of the equipment without the need for an additional braking device, simplifying the equipment structure and saving installation space.

[0037] The working process of this embodiment is as follows: Before the winding operation, the expansion spring 414 is in its natural state, pushing the sliding seat 415 to slide away from the base 411. The sliding seat 415 drives the main shaft 130 to slide synchronously through the insert pin 416. The inclined wedge surface group 140 on the main shaft 130 pushes the sector plate 120 to expand radially until the sector plate 120 reaches the preset tension state. The drive motor 300 is started, and the drive motor 300 transmits power to the hollow shaft 110 through the brake disc coupling 200. 10 drives the sector plate 120 to rotate synchronously, realizing the winding operation of the roll material; after winding is completed, the shrinking cylinder is activated, the piston rod A422 extends, pushes the sliding seat 415 to slide towards the base 411, compresses the expansion spring 414, the sliding seat 415 drives the main shaft 130 to slide in the opposite direction, the thrust of the inclined wedge assembly 140 on the sector plate 120 disappears, the sector plate 120 retracts, and the unwinding is completed; when it is necessary to stop the machine, the machine is stopped through the brake disc of the brake disc coupling 200, which improves the safety of operation.

[0038] Example 2 like Figures 5 to 7 As shown, this embodiment provides a second transmission mechanism 400 implementation scheme for a motor direct-drive winding machine. The difference from Embodiment 1 is that the structure of the transmission mechanism 400 is different. Specifically, the structure of the hollow shaft 110, sector plate 120, main shaft 130, inclined wedge surface group 140, support bearing 150, brake disc coupling 200, and drive motor 300 is the same as that of Embodiment 1, and will not be described again here.

[0039] like Figure 6 and Figure 7 As shown, the transmission mechanism 400 includes a connecting shaft 430, a rotary hydraulic cylinder 440, and a rotary oiler 450. The connecting shaft 430 and the rotary hydraulic cylinder 440 are integrally manufactured, and the other end is connected to the brake disc coupling 200 via a flat key. The rotary oiler 450 is a German GAT M200 NX2-S rotary oiler, which is mounted on the connecting shaft 430. The rotary oiler 450 is connected to an external hydraulic station via a pipeline to provide hydraulic power to the rotary hydraulic cylinder 440. The rotary hydraulic cylinder 440 is threaded to the end of the main shaft 130 away from the sector plate 120, and the rotary hydraulic cylinder 440 rotates synchronously with the hollow shaft 110 to push the main shaft 130 to slide axially along the hollow hole 111, thereby realizing the expansion and contraction of the sector plate 120.

[0040] In this embodiment, the rotary hydraulic cylinder 440 includes a cylinder body B441, a piston rod B442, an end cover flange 443, and a connecting flange 444. One end of the connecting flange 444 is bolted to a fixed flange 112 on a hollow shaft 110, and the other end is bolted to the end cover flange 443. The piston rod B442 passes through the end cover flange 443 and is connected to the main shaft 130 through a clamp-type flange 160. Four sealing rings (sealing components 445) are provided between the piston rod B442 and the end cover flange 443 to ensure the sealing performance of the rotary hydraulic cylinder 440 and prevent hydraulic oil leakage.

[0041] In this embodiment, combined with Figure 7 As shown, the connecting shaft 430 has a hydraulic oil hole B452 and a hydraulic oil hole A451. The hydraulic oil hole B452 is connected to the first inner cavity (one side of the piston rod B442) of the cylinder body B441. The cylinder body B441 has a hydraulic oil hole C4411, which is connected to the second inner cavity (the side away from the piston rod B442) of the cylinder body B441 and the hydraulic oil hole A451. The rotary oiler 450, the hydraulic oil hole B452 and the first inner cavity constitute the first oil circuit. The rotary oiler 450, the hydraulic oil hole A451, the hydraulic oil hole C4411 and the second inner cavity constitute the second oil circuit. The two oil circuits are alternately supplied with oil by an external hydraulic station to realize the reciprocating motion of the piston rod B442.

[0042] The hydraulic cylinder rotates synchronously with the hollow shaft and main shaft. Combined with a rotary oil supply and internal axial / radial hydraulic oil holes A, B, and C, it forms a closed-loop rotary oil circuit, ensuring continuous and reciprocating rotation of the main shaft. Extensive field use has shown that when the coiler operates continuously, generating high temperatures, or experiences large temperature fluctuations during intermittent operation, especially in hot summer weather when the factory temperature remains above 35°C, the aforementioned oil circuit design accelerates heat transfer of the hydraulic oil, preventing pressure fluctuations caused by high-temperature dilution and thus stabilizing the operating pressure.

[0043] In this embodiment, as Figure 6 As shown, a support frame 431 fixed to the ground is provided on the connecting shaft 430. The support frame 431 is located between the rotary oiler 450 and the brake disc coupling 200. Bearings are installed on the support frame 431 to support the connecting shaft 430 and the rotary oiler 450, ensuring the stability of the equipment operation and reducing vibration.

[0044] The working process of this embodiment is as follows: Before the winding operation, the external hydraulic station supplies oil to the first oil circuit through the rotary oiler 450. The hydraulic oil enters the first inner cavity of the cylinder body B441 through the hydraulic oil hole B452, pushing the piston rod B442 to extend. The piston rod B442 drives the main shaft 130 to slide. The inclined wedge surface assembly 140 on the main shaft 130 pushes the sector plate 120 to expand radially until the sector plate 120 reaches the preset tension state. The drive motor 300 is started. The drive motor 300 transmits power to the connecting shaft 430 through the brake disc coupling 200. 430 drives the rotary hydraulic cylinder 440 and the hollow shaft 110 to rotate synchronously. The hollow shaft 110 drives the sector plate 120 to rotate, realizing the winding operation of the coil material. After winding is completed, the external hydraulic station switches the oil circuit and supplies oil to the second oil circuit. The hydraulic oil enters the second inner cavity of the cylinder body B441 through the hydraulic oil hole A451 and the hydraulic oil hole C4411, pushing the piston rod B442 to retract. The piston rod B442 drives the main shaft 130 to slide in the opposite direction, and the sector plate 120 retracts, completing the unwinding. When stopping, the machine can be stopped quickly through the brake disc of the brake disc coupling 200.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A direct-drive motor winding machine, comprising a drum (100) for winding a metal coil, said drum (100) including a hollow shaft (110); characterized in that, It also includes a brake disc coupling (200), a drive motor (300), and a transmission mechanism (400). The drive side of the hollow shaft (110) is fixedly connected to the transmission mechanism (400), and the transmission mechanism (400) is connected to the drive motor (300) through the brake disc coupling (200); the central axes of the hollow shaft (110), the brake disc coupling (200), the drive motor (300) and the transmission mechanism (400) are coaxial.

2. The direct-drive winding machine according to claim 1, characterized in that, The hollow shaft (110) has a plurality of sector plates (120) evenly distributed on its outer circumference. The hollow shaft (110) has a hollow hole (111) extending along its axial direction inside. A main shaft (130) is slidably connected inside the hollow hole (111). A plurality of inclined wedge surface groups (140) are evenly distributed on the circumferential surface of the main shaft (130). The plurality of inclined wedge surface groups (140) correspond one-to-one with the plurality of sector plates (120). The inclined wedge surface group (140) includes a plurality of inclined wedge surfaces arranged along the axial direction of the main shaft (130). A support bearing (150) is installed on the hollow shaft (110).

3. The direct-drive winding machine according to claim 2, characterized in that, The transmission mechanism (400) includes an expansion component (410) and a shrinking component (420). The expansion component (410) is used to provide elastic force to drive the main shaft (130) to slide, so that the sector plate (120) expands. The shrinking component (420) is used to extend after winding is completed, and can push the main shaft (130) to slide in the opposite direction, so that the sector plate (120) shrinks to achieve unwinding.

4. The direct-drive winding machine according to claim 3, characterized in that, The expansion component (410) includes a base (411), a positioning block (412), a screw (413), an expansion spring (414), a sliding seat (415), and a pin (416). The base (411) is sleeved with the hollow shaft (110) and is laterally positioned and fixed by the positioning block (412). The sliding seat (415) is hollow, and several copper sleeves (4151) are provided on its inner sidewall. The sliding seat (415) is sleeved on the hollow shaft (110) and can slide along the surface of the hollow shaft (110). An expansion spring (414) is fitted on the screw (413), with one end connected to the base (411) and the other end connected to the sliding seat (415), so that the expansion spring (414) is located between the base (411) and the sliding seat (415); The hollow shaft (110) has an axially oriented oblong hole (4152), the length of which is greater than the maximum travel distance of the shrinking component (420); the insert pin (416) passes through the sliding seat (415), the hollow shaft (110) and the main shaft (130), and can slide along the oblong hole (4152); the insert pin (416) is fixed to the sliding seat (415) and the main shaft (130).

5. The direct-drive winding machine according to claim 4, characterized in that, The sliding seat (415) is provided with an oil inlet hole A (4153), which is connected to the copper sleeve (4151). The oil inlet hole A (4153) is fitted with an oil cup (4154).

6. The direct-drive winding machine according to claim 5, characterized in that, The shrinking component (420) includes a shrinking cylinder, which includes a cylinder body A (421) and a piston rod A (422). The cylinder body A (421) is fixed to the ground. The piston rod A (422) is placed in the cylinder body A (421). The hollow shaft (110) can pass through the piston rod A (422) and is connected to the brake disc coupling (200).

7. The direct-drive winding machine according to claim 1, characterized in that, The transmission mechanism (400) includes a connecting shaft (430), a rotary hydraulic cylinder (440), and a rotary oiler (450). One end of the connecting shaft (430) is connected to the rotary hydraulic cylinder (440), and the other end is connected to the brake disc coupling (200). The rotary oiler (450) is mounted on the connecting shaft (430) and is used to provide power to the rotary hydraulic cylinder (440). The rotary hydraulic cylinder (440) is connected to the end of the main shaft (130) away from the sector plate (120) and rotates synchronously with the hollow shaft (110). It is used to push the main shaft (130) to slide axially along the hollow hole (111) to realize the expansion and contraction of the sector plate (120).

8. The direct-drive winding machine according to claim 7, characterized in that, The rotary hydraulic cylinder (440) includes a cylinder body B (441), a piston rod B (442), an end cover flange (443), and a connecting flange (444). One end of the connecting flange (444) is connected to the fixed flange (112) on the hollow shaft (110), and the other end is connected to the end cover flange (443). The piston rod B (442) passes through the end cover flange (443) and is connected to the main shaft (130). Several sealing components (445) are provided between the piston rod B (442) and the end cover flange (443). The connecting shaft (430) is provided with a hydraulic oil hole B (452) and a hydraulic oil hole A (451). The hydraulic oil hole B (452) is connected to the first inner cavity of the cylinder body B (441). The cylinder body B (441) is provided with a hydraulic oil hole C (4411). The hydraulic oil hole C (4411) is connected to the second inner cavity of the cylinder body B (441) and the hydraulic oil hole A (451). The rotary oiler (450), the hydraulic oil hole B (452) and the first inner cavity constitute the first oil circuit. The rotary oiler (450), the hydraulic oil hole A (451), the hydraulic oil hole C (4411) and the second inner cavity constitute the second oil circuit.

9. The direct-drive winding machine according to claim 8, characterized in that, The connecting shaft (430) is provided with a support frame (431) fixed to the ground, and the support frame (431) is located between the rotary oiler (450) and the brake disc coupling (200).

10. The direct-drive winding machine according to claim 1, characterized in that, The brake disc coupling (200) is keyed to the output shaft of the transmission mechanism (400) and the drive motor (300).

Images