A spindle mechanism and fully automatic optical fiber winding machine

Abstract

The present invention discloses a spindle mechanism and a fully automatic optical fiber winding machine. The spindle mechanism is rotatably arranged on the side plate of a workbench and driven to rotate by a spindle motor. The characteristics are as follows: the spindle motor is mounted on the side plate of the workbench; and the output shaft of the spindle motor has a thick shaft section and a thin shaft section; the spindle mechanism includes an outer sleeve and an inner shaft rod; the outer sleeve is rotationally engaged with the spindle hole of the side plate of the workbench; the inner shaft rod is clearance-engaged with the inner hole of the outer sleeve; the thick shaft section is coaxially connected to the input end of the outer sleeve through an elastic coupling; the thin shaft section is coaxially connected to the input end of the inner shaft rod; the output end of the outer sleeve is coaxially connected to the turntable; and the output end of the inner shaft rod is coaxially connected to the optical fiber ring skeleton. The present invention can realize the synchronous rotation of the turntable and the optical fiber ring skeleton, and at the same time, the turntable will not generate interference effects such as dynamic balance or circular runout on the rotation of the optical fiber ring skeleton during rotation, and can ensure that the optical fiber ring skeleton always maintains high-precision movement.

Description

Technical Field

[0001] The invention relates to a main shaft mechanism and a full-automatic optical fiber winding machine. Background Art

[0002] The fully automatic fiber optic ring winding machine is an automated equipment specially used for fiber optic winding. It is mainly used for winding fiber optic rings for fiber optic gyroscopes. It is also widely used in the fields of fiber optic communications and fiber optic sensing. The fully automatic fiber optic ring winding machine has a workbench, a left spindle mechanism, a right spindle mechanism, a first fiber supply module, a second fiber supply module, a first displacement module, a second displacement module and a fiber optic ring skeleton. It can be used to achieve multi-level symmetrical automated winding of fiber optic rings. For example, in processes such as the four-level symmetric and hexadecane-pole symmetric winding method, the optical fiber to be wound is first divided into two sections from the midpoint, and the midpoint of the optical fiber is set on the fiber optic ring skeleton. The optical fiber sections at both ends are pre-wound on the fiber supply wheels of the first fiber supply module and the second fiber supply module. The first fiber supply module and the second fiber supply module serve as two fiber supply sources respectively. The first fiber supply module and the second fiber supply module supply fiber to the fiber optic ring skeleton in sequence. During fiber winding on a fiber ring skeleton, the first fiber supply module supplies fiber on the first displacement module and is driven by the first displacement module to shift left and right (i.e., along the X-axis). The second fiber supply module, on the other hand, orbits on the turntables of the left and right spindle mechanisms. Conversely, the second fiber supply module supplies fiber on the second displacement module and is driven by the second displacement module to shift left and right (i.e., along the X-axis). The first fiber supply module and the second fiber supply module alternately supply fiber and orbit around the turntables of the left and right spindle mechanisms. For details, see published patents such as CN118929345A, CN118954207A, CN219669819U, and CN211234448U.

[0003] Therefore, when the optical fiber ring is wound, the optical fiber ring skeleton is assembled on one of the spindle mechanisms (such as the left spindle mechanism), and the optical fiber ring skeleton and the turntable on the spindle mechanism rotate coaxially. During the winding process, the turntable on the spindle mechanism where the optical fiber ring skeleton is located sometimes has a single fiber supply module hung on it and sometimes does not have a fiber supply module hung on it.

[0004] Regarding the displacement module of the present application, the closest prior art found is a fiber winding machine (CN118929345A). Because the turntable and frame (equivalent to the "fiber ring frame") of the spindle mechanism in this existing fiber winding machine are fixed to the same spindle, the fiber supply module sometimes revolves around the turntable. Due to the turntable's large size and heft, the turntable is very heavy. Furthermore, since the fiber supply module is only fixed to one side of the turntable, the force applied to the turntable is asymmetrical and uneven. Furthermore, the turntable's heft exerts downward pressure on the spindle, causing the spindle's centerline to tilt and sag, preventing horizontal rotation. This causes the turntable's center of mass to misalign with its center of rotation, resulting in unbalanced rotation. The existing method of adding a counterweight further increases the pressure, exacerbating the spindle sag. This structural design is highly unsuitable. Furthermore, when the turntable and frame are fixed to the same spindle, improper turntable rotation directly interferes with the frame's rotation, causing unbalanced rotation during winding.

[0005] The rotational accuracy of the bobbin during fiber winding on a fully automatic fiber optic ring winding machine directly impacts the precision, performance, and quality of the fiber ring. Unbalanced bobbin rotation creates forces of varying magnitude and direction at different locations on the fiber, potentially causing localized excessive stretching or compression, and irregular vibrations that impose additional mechanical stress on the fiber. This unbalanced bobbin rotation also leads to unstable fiber winding speeds, resulting in uneven fiber winding around the bobbin. This can result in some areas being too densely wound and others too sparsely wound, severely impacting the performance of the fiber ring. Summary of the Invention

[0006] The present invention provides a main shaft mechanism and a fully automatic optical fiber ring winding machine to solve the problem that the rotation of the turntable of the main shaft mechanism of the existing fiber winding machine interferes with the rotation of the optical fiber ring frame, causing the optical fiber ring frame to rotate unbalanced during winding.

[0007] In order to achieve the above-mentioned purpose, the technical solution of the present invention is: a spindle mechanism, which is rotatably arranged on the side plate of the worktable and driven to rotate by a spindle motor; it is characterized in that: the spindle motor is installed on the side plate of the worktable; and the output shaft of the spindle motor has a thick shaft section and a thin shaft section; the spindle mechanism includes an outer sleeve and an inner shaft rod; the outer sleeve is rotatably matched with the spindle hole of the worktable side plate; the inner shaft rod is clearance-matched with the inner hole of the outer sleeve; the thick shaft section is coaxially connected to the input end of the outer sleeve through an elastic coupling; the thin shaft section is coaxially connected to the input end of the inner shaft rod; the output end of the outer sleeve is coaxially connected to the turntable; the output end of the inner shaft rod is coaxially connected to the optical fiber ring skeleton.

[0008] According to the above technical solution, when the spindle motor drives the spindle mechanism to rotate on the side plate of the worktable, its working principle is as follows:

[0009] First, when the output shaft of the spindle motor rotates, its thick shaft section drives the outer sleeve to rotate coaxially on the spindle hole of the worktable side plate through the elastic coupling, and the outer sleeve drives the turntable to rotate coaxially;

[0010] Second, when the output shaft of the spindle motor rotates, its thin shaft section drives the inner shaft rod to rotate coaxially, and the inner shaft rod drives the optical fiber ring skeleton to rotate coaxially;

[0011] Third, the inner shaft rotates in the gap inside the outer sleeve and rotates independently without contacting each other. Therefore, the inner shaft will not be disturbed or affected by the unbalanced rotation of the turntable on the outer sleeve. The thick shaft section and the outer sleeve are coaxially connected through an elastic coupling, and the elastic coupling can eliminate the reaction effect of the rotation of the outer sleeve on the output shaft of the spindle motor. The elastic coupling can compensate for the axial, radial and angular deviations of the outer sleeve, absorb vibration energy, and reduce impact.

[0012] Therefore, the above technical solution can solve the problem that the rotation of the turntable of the main shaft mechanism of the existing fiber winding machine interferes with the rotation of the optical fiber ring skeleton, causing the optical fiber ring skeleton to rotate unbalanced during winding.

[0013] The above technical solution has the following beneficial effects: first, the outer sleeve and inner shaft can be driven coaxially by the thick and thin shaft sections of the spindle motor's output shaft to rotate independently; second, the outer sleeve and inner shaft are loosely matched, and the thick shaft section is coaxially connected to the outer sleeve via an elastic coupling; thus, through the above ingenious combination, the turntable and the fiber optic ring frame can be driven by a single spindle motor to rotate independently, with synchronous and separate outputs without interfering with each other; even if the turntable's own bulkiness causes the centerline to tilt and sag, preventing it from rotating horizontally, or if the center of mass of the turntable and the center of rotation are inconsistent, resulting in unbalanced rotation, the turntable's rotation will not interfere with or affect the fiber optic ring frame's rotation around the fiber, thereby ensuring the independent motion accuracy of the fiber optic ring frame. Therefore, the present invention can achieve synchronous rotation of the turntable and the fiber optic ring frame, and at the same time, the turntable will not interfere with the rotation of the fiber optic ring frame due to dynamic balance or circular runout, thereby ensuring that the fiber optic ring frame always maintains high-precision motion.

[0014] Furthermore, the spindle hole includes a first bearing hole section, a center hole section, and a second bearing hole section, arranged in sequence; the middle portion of the outer wall of the outer sleeve is provided with a first outer circular section, a shoulder section, and a second outer circular section, in sequence; the first bearing hole section and the first outer circular section are rotatably connected via a first bearing; and the second bearing hole section and the second outer circular section are rotatably connected via a second bearing. Since the outer sleeve is supported by two bearings as it rotates on the spindle hole, the dual-bearing support can better constrain the movement of the outer sleeve, making its rotation smoother, more precise, and more efficient in transmitting power. The dual-bearing support can also share the loads acting on the outer sleeve, including radial and axial loads. Compared to a single-bearing support, the dual-bearing support can withstand greater forces, meet the requirements of use under high-load conditions, and extend the service life of the shaft and bearings. The shoulder section is used to block and limit the first and second bearings, preventing axial displacement toward each other.

[0015] In addition, since the axial length of the inner shaft is relatively long and the optical fiber ring frame is fixed at the output end (free end) of the inner shaft, it is a cantilever rotation. When the cantilever rotates, due to the gravity of the optical fiber ring frame and the optical fiber ring itself, a certain deformation will occur, thereby affecting the rotation accuracy of the optical fiber ring frame.

[0016] Furthermore, a radial hole extending radially through the center of the shoulder section is provided; a radial rod is provided in the center of the inner shaft; the radial rod extends through the radial hole with a clearance fit; an annular groove for lubricating fluid is provided in the center of the center hole section; and a rotating member is provided at the outer end of the radial rod for rolling contact with the inner wall of the annular groove. Thus, when the inner shaft rotates, the rotating member at the outer end of the radial rod rolls in contact with the inner wall of the annular groove, providing radial support for the center of the inner shaft, limiting radial displacement of the inner shaft, enabling precise rotation of the inner shaft about its axis, and limiting vibration and uneven force caused by radial swing of the inner shaft. The outer sleeve and the inner shaft revolve in orbital motion, but because the radial rod extends through the radial hole with a clearance fit, they do not contact each other. Furthermore, when the radial rod on the inner shaft rotates, it does not come into contact with the inner wall of the radial hole of the outer sleeve, preventing interference. This provides radial support for the center of the inner shaft, improving the rotational accuracy of the optical fiber ring frame while preventing interference from the outer sleeve on the radial rod. Since the rotating part at the outer end of the radial rod is in rolling contact with the inner wall of the annular groove and is lubricated, the rolling friction coefficient is small, the resistance is small, the energy loss can be reduced, it is not easy to wear, and it can maintain precise fit for a long time, and can provide relatively stable support and motion trajectory. At the same time, when the rotating part moves in the annular groove, the lubricating fluid will not be lost in the annular groove, and long-term effective lubrication can be maintained, dry friction can be avoided, and maintenance-free or long-term maintenance-free can be achieved.

[0017] Furthermore, the rotating member is a ball, a roller or a rolling bearing. Specifically, the rotating member is rotatably arranged on the outer end of the radial rod.

[0018] Furthermore, the end of the thin shaft section is provided with a boss and a tapered column; the input end of the inner shaft rod is provided with a cylindrical hole section for coaxially mating with the boss and a tapered hole section for coaxially mating with the tapered column; and a locking sleeve is further provided; the locking sleeve is provided with a threaded hole for threadedly mating with the inner shaft rod and a retaining ring for compressing the boss. The cylindrical hole section for coaxially mating with the boss and the tapered hole section for coaxially mating with the tapered column provided at the input end of the inner shaft rod allow the inner shaft rod and the thin shaft section to be coaxially positioned, while the locking sleeve allows the inner shaft rod and the thin shaft section to be mutually locked and prevent radial and axial loosening.

[0019] Furthermore, a first retaining spring for limiting the axial displacement of the first bearing is installed on the first outer circular segment, and a second retaining spring for limiting the axial displacement of the second bearing is installed on the second outer circular segment, thereby preventing the first bearing and the second bearing from loosening in the axial direction.

[0020] Furthermore, the spindle motor is mounted on the workbench side panel via a motor mounting base; the motor mounting base includes a motor mounting plate and a first pressure cap spaced apart on the left and right sides; the motor mounting plate and the first pressure cap are connected as a whole by two connecting plates; the two connecting plates are spaced apart front to back; the motor mounting plate, the first pressure cap, and the two connecting plates together form an inner cavity capable of accommodating the elastic coupling; the first pressure cap is fixed to the workbench side panel and is used to compress the outer ring of the first bearing. During assembly, the spindle motor is fixed to the motor mounting plate of the motor mounting base, while the elastic coupling is located in the inner cavity and coaxially connects the thick shaft section with the outer sleeve, while the first pressure cap is fixed to the workbench side panel and is used to compress the outer ring of the first bearing to prevent the outer ring of the first bearing from loosening outward. Therefore, this motor mounting base is ingenious and rational in structure, can be integrally formed, has reliable strength, strong load-bearing capacity, and low vibration, while meeting the assembly relationship and technical requirements of related parts, has high positioning accuracy, and also facilitates assembly and disassembly of the elastic coupling, as well as fault observation and repair.

[0021] Furthermore, a second pressure cover for pressing the second bearing outer ring is provided on the side plate of the workbench.

[0022] Furthermore, the middle of the first and second glands are provided with a stepped hole; the small hole section of the stepped hole is away from the workbench side plate and is installed with a sealing ring, so as to prevent dust from entering the interior and affecting the movement of the internal bearing.

[0023] The present invention also discloses a fully automatic optical fiber ring winding machine, which has a main shaft mechanism described in any one of the above technical solutions.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] First, the present invention can realize the independent rotation of the turntable and the optical fiber ring skeleton driven by a single spindle motor, with synchronous and separate outputs without interfering with each other; even if the center line of the turntable itself is tilted and drooped due to its bulkiness and cannot rotate horizontally, and the center of mass of the turntable is inconsistent with the center of rotation, resulting in unbalanced rotation, etc., it will not cause any interference or influence on the optical fiber ring skeleton during fiber winding. Therefore, the independent movement accuracy of the optical fiber ring skeleton can be guaranteed, and the problem that the rotation of the turntable of the existing fiber winding machine spindle mechanism will interfere with the rotation of the optical fiber ring skeleton and cause unbalanced rotation of the optical fiber ring skeleton during winding can be solved. The present invention can realize the synchronous rotation of the turntable and the optical fiber ring skeleton, and at the same time, the turntable will not produce interference effects such as dynamic balance or circular runout on the rotation of the optical fiber ring skeleton during rotation, and can ensure that the optical fiber ring skeleton always maintains high-precision movement;

[0026] Second, the spindle mechanism of the present invention is supported by two bearings as the outer sleeve rotates on the spindle hole. The dual-bearing support can better constrain the movement of the outer sleeve, making the outer sleeve's rotation more stable, precise, and efficient in transmitting power. The dual-bearing support can share the load acting on the outer sleeve, including radial and axial loads. Compared with a single-bearing support, the dual-bearing support can withstand greater forces, meet the requirements of use under high-load conditions, and extend the service life of the shaft and bearings. The shoulder section is used to block and limit the first and second bearings to prevent axial displacement toward each other.

[0027] Third, when the inner shaft of the spindle mechanism of the present invention rotates, the rotating member at the outer end of the radial rod rolls in contact with the inner wall of the annular groove, providing radial support for the middle portion of the inner shaft. This limits radial displacement of the inner shaft, enabling precise rotation of the inner shaft about its axis and limiting vibration and uneven force caused by radial swinging of the inner shaft. The outer sleeve and the inner shaft revolve in orbital motion, but because the radial rods pass through the radial holes and are fitted with clearance, they do not contact each other. Furthermore, when the radial rods on the inner shaft rotate, they do not come into contact with the inner wall of the radial hole of the outer sleeve, resulting in no interference. This provides radial support for the middle portion of the inner shaft, improving the rotational accuracy of the optical fiber ring skeleton, while also preventing interference from the outer sleeve on the radial rods. Since the rotating member at the outer end of the radial rod is in rolling contact with the inner wall of the annular groove and is lubricated, the rolling friction coefficient is small, the resistance is small, the energy loss is reduced, it is not easy to wear, and it can maintain precise fit for a long time, and can provide relatively stable support and movement trajectory. At the same time, when the rotating member moves in the annular groove, the lubricating fluid will not be lost in the annular groove, and long-term effective lubrication can be maintained, dry friction can be avoided, and maintenance-free or long-term maintenance-free can be achieved;

[0028] Fourth, the present invention provides a cylindrical hole section for coaxially cooperating with the boss and a conical hole section for coaxially cooperating with the tapered column in the input end of the inner shaft rod; and a threaded hole for threadedly cooperating with the inner shaft rod and a retaining ring for pressing the boss in the locking sleeve. The cylindrical hole section for coaxially cooperating with the boss and the conical hole section for coaxially cooperating with the tapered column in the input end of the inner shaft rod enable the inner shaft rod and the thin shaft section to be coaxially positioned. The locking sleeve realizes mutual locking between the inner shaft rod and the thin shaft section without radial and axial loosening. At the same time, the inner shaft rod and the thin shaft section can be disassembled from each other.

[0029] Fifth, in the present invention, since the spindle motor is fixed on the motor mounting plate of the motor mounting seat, and the elastic coupling is located in the inner cavity and coaxially connects the thick shaft section and the outer shaft sleeve, and the first pressure cover is fixed on the workbench side plate and is used to press the outer ring of the first bearing to prevent the outer ring of the first bearing from loosening outward, the motor mounting seat is ingenious and has a reasonable structure, can be integrally formed, has reliable strength, strong load-bearing capacity, low vibration, and at the same time meets the assembly relationship and technical requirements of related parts, has high positioning accuracy, and is also convenient for assembly, disassembly, and fault observation and maintenance of the elastic coupling. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional representation of a spindle mechanism in the present invention. Figure 1 .

[0031] Figure 2 It is a three-dimensional representation of a spindle mechanism in the present invention. Figure 2 .

[0032] Figure 3 It is a main sectional view of a main shaft mechanism in the present invention.

[0033] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0034] Figure 5 It is a three-dimensional cutaway view of a spindle mechanism in the present invention.

[0035] Figure 6 This is a three-dimensional diagram of a spindle mechanism in the present invention when the workbench side plates are not assembled.

[0036] Figure 7 This is a main cross-sectional view of a spindle mechanism in the present invention when the spindle motor and the inner shaft are not assembled.

[0037] Figure 8 It is a partial cross-sectional view of a side panel of a workbench in the present invention.

[0038] Figure 9 It is a main sectional view of an outer shaft sleeve in the present invention.

[0039] Figure 10 It is a three-dimensional cutaway view of the connection relationship between the inner shaft, radial rods and rotating parts in the present invention (when the rotating parts are balls).

[0040] Figure 11 This is a main sectional view of the connection relationship between the inner shaft, radial rod and rotating member in the present invention (when the rotating member adopts a roller or rolling bearing).

[0041] Figure 12 It is a three-dimensional diagram of a motor mounting base (equipped with a sealing ring) in the present invention.

[0042] Figure 13 This is a working state diagram of a fully automatic optical fiber winding machine in the present invention.

[0043] Figure 14 yes Figure 13 Enlarged view of point K in the middle.

[0044] In the figure: workbench side plate 1, spindle motor 2, thick shaft section 2-1, thin shaft section 2-2, spindle hole 1-1, first bearing hole section 1-11, middle hole section 1-12, second bearing hole section 1-13, outer sleeve 3-1, inner shaft 3-2, inner hole 3-10, input end 3-11, first outer circle section 3-12, shoulder section 3-13, second outer circle section 3-14, output end 3-15, turntable 4, fiber ring skeleton 5, elastic coupling 3-3, first bearing 3-5, second bearing 3-6, first retaining spring 3-7, second retaining spring 3-8, ring groove 1-121 , radial hole 3-131, radial rod 6, rotating part 7, boss 2-21, conical column 2-22, cylindrical hole section 3-21, conical hole section 3-22, motor mounting seat 9, motor mounting plate 9-1, first pressure cover 9-2, connecting plate 9-3, second pressure cover 10, step hole 10-1, small hole section 10-11, sealing ring 11, workbench M-1, spindle mechanism M-2, fiber supply module M-3, displacement module M-4, locking assembly M-5, inner cavity N, lubricating liquid Y. DETAILED DESCRIPTION

[0045] The present invention will be further described below with reference to the accompanying drawings and examples:

[0046] Example 1:

[0047] See Figures 1-9 A spindle mechanism is rotatably mounted on a side plate 1 of a workbench and driven by a spindle motor 2. The key points are:

[0048] See Figure 3-Figure 5 , the spindle motor 2 is installed on the workbench side plate 1;

[0049] See Figure 3-Figure 5 The output shaft of the spindle motor 2 has a thick shaft section 2-1 and a thin shaft section 2-2;

[0050] See Figure 3-Figure 5 Specifically, the spindle mechanism includes an outer sleeve 3-1 and an inner shaft 3-2;

[0051] See Figure 3-Figure 5 The outer sleeve 3-1 is rotationally matched with the spindle hole 1-1 of the workbench side plate 1; the inner shaft rod 3-2 is clearance-matched with the inner hole 3-10 of the outer sleeve 3-1;

[0052] See Figure 3-Figure 5 The thick shaft section 2-1 is coaxially connected to the input end 3-11 of the outer sleeve 3-1 through an elastic coupling 3-3; the thin shaft section 2-2 is coaxially connected to the input end of the inner shaft rod 3-2.

[0053] Since the elastic coupling can adopt an existing structure or be directly purchased and assembled from the market according to the required model requirements, it will not be described in detail.

[0054] See Figure 3-Figure 5 The output end 3-15 of the outer sleeve 3-1 is coaxially connected to the turntable 4; the output end of the inner shaft rod 3-2 is coaxially connected to the optical fiber ring skeleton 5.

[0055] Regarding the above spindle mechanism, when the spindle motor 2 drives the spindle mechanism to rotate on the worktable side plate 1, its working principle is as follows:

[0056] First, when the output shaft of the spindle motor 2 rotates, its thick shaft section 2-1 drives the outer sleeve 3-1 to rotate coaxially on the spindle hole 1-1 of the worktable side plate 1 through the elastic coupling 3-3, and the output end of the outer sleeve 3-1 drives the turntable 4 to rotate coaxially;

[0057] Second, when the output shaft of the spindle motor 2 rotates, its thin shaft section 2-2 drives the inner shaft rod 3-2 to rotate coaxially, and the output end of the inner shaft rod 3-2 drives the optical fiber ring skeleton 5 to rotate coaxially;

[0058] Third, the inner shaft rod 3-2 rotates in a clearance fit within the inner hole of the outer sleeve 3-1, and they rotate independently without contacting each other. Therefore, the inner shaft rod 3-2 will not be disturbed or affected by the unbalanced rotation of the turntable 4 on the outer sleeve 3-1, and the thick shaft section 2-1 and the outer sleeve 3-1 are coaxially connected through an elastic coupling 3-3, and the elastic coupling 3-3 can eliminate the reaction effect of the rotation of the outer sleeve 3-1 on the output shaft of the spindle motor 2, and the elastic coupling 3-3 can compensate for the axial, radial and angular deviations of the outer sleeve 3-1, absorb vibration energy, and reduce impact.

[0059] Therefore, the main shaft mechanism can solve the problem that the rotation of the turntable of the main shaft mechanism of the existing fiber winding machine interferes with the rotation of the optical fiber ring frame, causing the optical fiber ring frame to rotate unbalanced during winding.

[0060] The beneficial effects of this solution are: first, the thick shaft section 2-1 and the thin shaft section 2-2 of the output shaft of the spindle motor 2 can coaxially drive the outer sleeve 3-1 and the inner shaft rod 3-2 to rotate independently; then the inner hole 3-10 of the outer sleeve 3-1 and the inner shaft rod 3-2 are clearance-fitted (to avoid interference), and then the thick shaft section 2-1 and the outer sleeve 3-1 are coaxially connected through an elastic coupling 3-3; in this way, through the above-mentioned clever combination, it is possible to achieve the independent rotation of the turntable 4 and the optical fiber ring skeleton 5 driven by a single spindle motor 2, and the output is synchronized and separated without interfering with each other; even if the center line of the turntable 4 itself is tilted and drooped due to its own bulk and cannot rotate horizontally, and the center of mass of the turntable is inconsistent with the center of rotation, resulting in unbalanced rotation, and the turntable 4 will not cause any interference or influence on the optical fiber ring skeleton 5 when it rotates around the fiber, thereby ensuring the accuracy of the optical fiber ring skeleton 5's independent movement.

[0061] Specifically, the spindle motor 2 of the present invention is configured in a fully automatic optical fiber winding machine. During operation, the turntable 4 is provided with a locking assembly M-5 for securing the fiber supply module M-3 during its revolution. To ensure multi-stage symmetrical winding, the locking assemblies M-5 are provided in pairs, one in front and one in back.

[0062] Example 2: This example is a further improvement on Example 1:

[0063] See Figure 8 , further, the main shaft hole 1-1 includes a first bearing hole section 1-11, a middle hole section 1-12 and a second bearing hole section 1-13 arranged in sequence; see Figure 9 The middle portion of the outer wall of the outer sleeve 3-1 is provided with a first outer circle section 3-12, a shoulder section 3-13 and a second outer circle section 3-14 in sequence; Figure 7 The first bearing hole segment 1-11 and the first outer circle segment 3-12 are rotationally connected through the first bearing 3-5; the second bearing hole segment 1-13 and the second outer circle segment 3-14 are rotationally connected through the second bearing 3-6.

[0064] Thus, when the outer sleeve 3-1 rotates on the spindle hole 1-1, it is supported by two bearings spaced apart. The dual-bearing support can better constrain the movement of the outer sleeve 3-1, making the rotation of the outer sleeve 3-1 more stable, precise, and efficient in transmitting power. The dual-bearing support can also share the loads acting on the outer sleeve 3-1, including radial and axial loads. Compared with a single-bearing support, the dual-bearing support can withstand greater forces, meet the requirements of use under high-load conditions, and extend the service life of the shaft and bearings. The shoulder segment 3-13 is used to block and limit the first bearing 3-5 and the second bearing 3-6 to prevent axial displacement towards each other.

[0065] Can be combined Figure 3-Figure 9 Preferably, the first bearing 3-5 and the second bearing 3-6 are spherical roller bearings, which can withstand radial loads and bidirectional axial loads, have high radial load capacity, can adapt to heavy loads or vibration loads, and can stably support the rotation of the outer sleeve and the turntable.

[0066] Can be combined Figure 3-Figure 9 Furthermore, a first retaining spring 3-7 is mounted on the first outer segment 3-12 to limit the axial displacement of the first bearing 3-5; a second retaining spring 3-8 is mounted on the second outer segment 3-14 to limit the axial displacement of the second bearing 3-6. This prevents axial loosening of the first bearing 3-5 and the second bearing 3-6. Both the second outer segment 3-14 and the first outer segment 3-12 are provided with retaining grooves 3-24, within which the first retaining spring 3-7 or the second retaining spring 3-8 is mounted. Both the first retaining spring 3-7 and the second retaining spring 3-8 are standard components, also known as shaft circlips, and are not described in detail.

[0067] Example 3: This example is a further improvement on Example 2:

[0068] Since the inner shaft 3-2 has a long axial length and the optical fiber ring frame 5 is fixed at the free end of the output end of the inner shaft 3-2, it is cantilevered. When the cantilever rotates, due to the weight of the optical fiber ring frame and the optical fiber ring itself, a certain deformation will occur, thereby affecting the rotation accuracy of the optical fiber ring frame 5. In order to solve this problem:

[0069] See also Figure 9 Furthermore, a radial hole 3-131 is provided in the middle of the shoulder section 3-13; Figure 10-11 , the middle part of the inner shaft 3-2 is provided with a radial rod 6; Figure 3 and Figure 5 , the radial rod 6 passes through the radial hole 3-131 and is clearance-fitted; Figure 3 and Figure 8 A ring groove 1-121 for holding lubricating liquid Y is provided in the middle of the middle hole section 1-12.

[0070] visible Figure 10-11 The outer end of the radial rod 6 is provided with a rotating member 7 for rolling contact with the inner wall of the annular groove 1-121. Figure 3 、 Figure 5 and Figure 6 Thus, when the inner shaft rod 3-2 rotates, the rotating member 7 at the outer end of the radial rod 6 rolls in contact with the inner wall of the annular groove 1-121, thereby providing radial support for the middle portion of the inner shaft rod 3-2 and limiting the radial displacement of the inner shaft rod 3-2, enabling the inner shaft rod 3-2 to accurately rotate about its axis and limiting the vibration and uneven force caused by the radial swing of the inner shaft rod 3-2. The outer sleeve 3-1 and the inner shaft rod 3-2 revolve in orbital motion, and since the radial rods 6 pass through the radial holes 3-131 and are in clearance fit with each other, they do not contact each other. Furthermore, when the radial rods 6 on the inner shaft rod 3-2 rotate, they do not contact the inner wall of the radial holes 3-131 of the outer sleeve 3-1, and do not interfere with each other. This not only provides radial support for the middle portion of the inner shaft rod 3-2 and improves the rotation accuracy of the optical fiber ring skeleton 5, but also avoids the interference of the outer sleeve 3-1 on the radial rods 6. Since the rotating part 7 at the outer end of the radial rod 6 is in rolling contact with the inner wall of the annular groove 1-121 and is lubricated, the rolling friction coefficient is small, the resistance is small, the energy loss can be reduced, it is not easy to wear, and can maintain precise matching for a long time, and can provide relatively stable support and motion trajectory. At the same time, when the rotating part 7 moves in the annular groove 1-121, the lubricating fluid will still not be lost in the annular groove 1-121, and long-term effective lubrication can be maintained, dry friction can be avoided, and maintenance-free or long-term maintenance-free can be achieved.

[0071] Furthermore, the rotating member 7 is a ball, a roller or a rolling bearing (see Figure 10 、 Figure 11 Specifically, the rotating member 7 is rotatably mounted on the outer end of the radial rod 6.

[0072] Further, it can be seen Figure 3 and Figure 5 The rotating member 7 and the inner wall of the annular groove 1-121 adopt point contact or line contact.

[0073] Example 4: This example is a further improvement on the basis of Example 1, 2 or 3:

[0074] In order to solve the problem that the thin shaft section 2-2 and the input end of the inner shaft rod 3-2 cannot be disassembled, are not concentric and are not strong enough when they are coaxially connected.

[0075] Furthermore, a convex column 2-21 and a conical column 2-22 are provided at the end of the thin shaft section 2-2.

[0076] See Figure 10-11The input end of the inner shaft 3-2 is provided with a cylindrical hole section 3-21 for coaxially cooperating with the boss 2-21 and a conical hole section 3-22 for coaxially cooperating with the conical column 2-22; it also includes a locking sleeve 3-4; the locking sleeve 3-4 is provided with a threaded hole 3-41 for threadedly cooperating with the inner shaft 3-2 and a retaining ring 3-42 for pressing the boss 2-21. Figure 3-Figure 5 The cylindrical hole section 3-21 for coaxially cooperating with the convex column 2-21 and the conical hole section 3-22 for coaxially cooperating with the conical column 2-22 are provided in the input end of the inner shaft rod 3-2, so that the inner shaft rod 3-2 and the thin shaft section 2-2 are coaxially positioned, and the locking sleeve 3-4 is used to realize the mutual locking between the inner shaft rod 3-2 and the thin shaft section 2-2 and prevent radial and axial loosening. At the same time, the inner shaft rod 3-2 and the thin shaft section 2-2 can be disassembled from each other (see Figure 4 ).

[0077] Example 5: This example is a further improvement on the basis of Example 2 or 4:

[0078] See Figure 3-Figure 7 Furthermore, the spindle motor 2 is mounted on the workbench side plate 1 through a motor mounting seat 9.

[0079] See Figure 12 In the embodiment, the motor mounting seat 9 includes a motor mounting plate 9-1 and a first pressure cover 9-2 spaced apart on the left and right sides; the motor mounting plate 9-1 and the first pressure cover 9-2 are connected as a whole by two connecting plates 9-3; and the two connecting plates 9-3 are spaced apart in the front and back; the motor mounting plate 9-1, the first pressure cover 9-2 and the two connecting plates 9-3 are surrounded to form an inner cavity N that can accommodate the elastic coupling 3-3.

[0080] See Figure 3-Figure 7 , the first pressure cover 9-2 is fixed to the workbench side plate 1 and is used to compress the outer ring of the first bearing 3-5. During assembly, the spindle motor 2 is fixed to the motor mounting plate 9-1 of the motor mounting seat 9, and the elastic coupling 3-3 is located in the inner cavity and coaxially connects the thick shaft section 2-1 and the outer sleeve 3-1. The first pressure cover 9-2 is fixed to the workbench side plate 1 and is used to compress the outer ring of the first bearing 3-5 to prevent the outer ring of the first bearing 3-5 from loosening outward. Therefore, this motor mounting seat 9 has an ingenious and reasonable structure, can be integrally formed, has reliable strength, strong load-bearing capacity, low vibration, and at the same time meets the assembly relationship and technical requirements of related parts, has high positioning accuracy, and also facilitates the assembly and disassembly of the elastic coupling 3-3, as well as fault observation and repair.

[0081] See Figure 3-Figure 7Furthermore, a second pressure cover 10 for pressing the outer ring of the second bearing 3-6 is provided on the workbench side plate 1, so as to limit the axial loosening of the second bearing 3-6.

[0082] See Figure 7 Furthermore, the first gland 9-2 and the second gland 10 are both provided with a step hole 10-1 in the middle; the small hole section 10-11 of the step hole 10-1 is away from the workbench side plate 1 and is installed with a sealing ring 11 (also visible Figure 12 This prevents dust from entering the bearing and affecting its movement.

[0083] Example 6: A fully automatic optical fiber winding machine having the spindle mechanism described in any one of the above examples 1-5.

[0084] See Figure 13 Specifically, the fully automatic optical fiber winding machine includes a workbench M-1, two spindle mechanisms M-2, two fiber supply modules M-3, and two displacement modules M-4. The turntable 4 of the spindle mechanism M-2 is equipped with a locking assembly M-5 for locking the fiber supply module M-3 during its orbital rotation. Specifically, each turntable 4 is equipped with two locking assemblies M-5, and the two locking assemblies M-5 are distributed front to back.

[0085] Among them, the two spindle mechanisms M-2 are arranged on the workbench M-1 and are relatively spaced apart on the left and right; one of the spindle mechanisms M-2 (i.e. the one on the left) is equipped with a fiber optic ring skeleton 5, and the other spindle mechanism M-2 (i.e. the one on the left) can be equipped with or not equipped with a fiber optic ring skeleton 5.

[0086] Specifically, the fiber supply module M-3, the optical fiber ring skeleton 5, the displacement module M-4 and the locking assembly M-5 can all adopt existing structures, so they are not described in detail.

[0087] See Figure 13 When a fiber supply module M-3 on the rear side is supplying fiber for winding, the working principle is as follows:

[0088] During winding, the spindle motors 2 of the two spindle mechanisms M-2 move synchronously; a fiber supply module M-3 located in the rear position continuously supplies fiber to the optical fiber ring skeleton 5 in rotation and is on the displacement module M-4 located in the rear position and is driven by it to move along the X-axis (i.e. left and right); at this time, the fiber supply module M-3 located in the front position does not supply fiber and revolves on the turntable 4 of a spindle mechanism M-2 located on the left, and the fiber supply module M-3 in the front position is hung on the turntable 4 and is locked and fixed by a locking assembly M-5 located in the front position (see Figure 14 ).

[0089] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solution that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A spindle mechanism, which is rotatably mounted on a side plate (1) of a workbench and driven to rotate by a spindle motor (2); characterized in that: The spindle motor (2) is mounted on the workbench side plate (1); and the output shaft of the spindle motor (2) has a thick shaft section (2-1) and a thin shaft section (2-2); The main shaft mechanism comprises an outer shaft sleeve (3-1) and an inner shaft rod (3-2); The outer shaft sleeve (3-1) is rotationally matched with the main shaft hole (1-1) of the workbench side plate (1); the inner shaft rod (3-2) is clearance-matched with the inner hole of the outer shaft sleeve (3-1); The thick shaft section (2-1) is coaxially connected to the input end of the outer shaft sleeve (3-1) via an elastic coupling (3-3); the thin shaft section (2-2) is coaxially connected to the input end of the inner shaft rod (3-2); The output end of the outer shaft sleeve (3-1) is coaxially connected to the turntable (4); and the output end of the inner shaft rod (3-2) is coaxially connected to the optical fiber ring skeleton (5).

2. A spindle mechanism according to claim 1, characterized in that: The main shaft hole (1-1) comprises a first bearing hole section (1-11), a middle hole section (1-12) and a second bearing hole section (1-13) which are arranged in sequence; The middle portion of the outer side wall of the outer sleeve (3-1) is provided with a first outer circle section (3-12), a shoulder section (3-13) and a second outer circle section (3-14) in sequence; The first bearing hole section (1-11) and the first outer circle section (3-12) are rotatably connected via a first bearing (3-5); and the second bearing hole section (1-13) and the second outer circle section (3-14) are rotatably connected via a second bearing (3-6).

3. A spindle mechanism according to claim 2, characterized in that: A radial hole (3-131) is provided in the middle of the shoulder section (3-13); A radial rod (6) is provided in the middle of the inner shaft (3-2); the radial rod (6) passes through the radial hole (3-131) and is clearance-fitted; The middle portion of the middle hole section (1-12) is provided with an annular groove (1-121) capable of containing lubricating liquid; The outer end of the radial rod (6) is provided with a rotating member (7) for rolling contact with the inner wall of the annular groove (1-121).

4. A spindle mechanism according to claim 3, characterized in that: The rotating member (7) is a ball, a roller or a rolling bearing.

5. The spindle mechanism according to claim 1, wherein: The end of the thin shaft section (2-2) is provided with a convex column (2-21) and a conical column (2-22); The input end of the inner shaft (3-2) is provided with a cylindrical hole section (3-21) for coaxially cooperating with the convex column (2-21) and a conical hole section (3-22) for coaxially cooperating with the conical column (2-22); It also includes a locking sleeve (3-4); the locking sleeve (3-4) is provided with a threaded hole (3-41) for threadedly engaging with the inner shaft (3-2) and a retaining ring (3-42) for pressing the boss (2-21).

6. A spindle mechanism according to any one of claims 2 to 4, characterized in that: A first retaining spring (3-7) for limiting the axial displacement of the first bearing (3-5) is installed on the first outer circular segment (3-12); and a second retaining spring (3-8) for limiting the axial displacement of the second bearing (3-6) is installed on the second outer circular segment (3-14).

7. A spindle mechanism according to claim 2, characterized in that: The spindle motor (2) is mounted on the workbench side plate (1) via a motor mounting seat (9); The motor mounting seat (9) comprises a motor mounting plate (9-1) and a first pressure cover (9-2) spaced apart from each other on the left and right sides; the motor mounting plate (9-1) and the first pressure cover (9-2) are connected as a whole via two connecting plates (9-3); and the two connecting plates (9-3) are spaced apart from each other in the front and back; an inner cavity capable of accommodating the elastic coupling (3-3) is formed between the motor mounting plate (9-1), the first pressure cover (9-2) and the two connecting plates (9-3); the first pressure cover (9-2) is fixed on the workbench side plate (1) and is used to press the outer ring of the first bearing (3-5).

8. A spindle mechanism according to claim 7, characterized in that: A second pressure cover (10) for pressing the outer ring of the second bearing (3-6) is provided on the workbench side plate (1).

9. A spindle mechanism according to claim 8, characterized in that: The first gland (9-2) and the second gland (10) are both provided with a stepped hole (10-1) in the middle; The small hole section (10-11) of the step hole (10-1) is away from the workbench side plate (1) and is installed with a sealing ring (11).

10. A fully automatic optical fiber winding machine, characterized by: A spindle mechanism according to any one of claims 1 to 9.

Images