A variable-diameter bobbin device and a yarn-doffing method for glass fiber

Abstract

The application relates to a variable-diameter supporting bowl device for glass fiber yarn stripping and a yarn stripping method, wherein the variable-diameter supporting bowl device comprises a supporting sleeve, an extension mechanism, a plurality of supporting bowls and a driving mechanism, the supporting bowls are arranged on the supporting sleeve through the extension mechanism, the supporting bowls are parallel to the axis of the supporting sleeve, the driving mechanism drives the extension mechanism to make the supporting bowls approach or move away from the supporting sleeve along the radial direction of the supporting sleeve, and the supporting diameter of the variable-diameter supporting bowl device is continuously adjustable. The application realizes continuous adjustment of the supporting diameter of the supporting bowl under the premise of guaranteeing the contact area of the cake and the supporting bowl, can be suitable for cakes with different diameters, greatly reduces the labor cost, and improves the work efficiency.

Description

Technical Field

[0001] This application belongs to the field of glass fiber production automation technology, and specifically relates to a variable diameter support device and a method for unloading glass fiber yarn. Background Technology

[0002] With rising energy and labor costs and intensifying production competition, improving efficiency and reducing costs have become key concerns for fiberglass companies, making production automation an inevitable trend. The unloading robot is an indispensable piece of equipment in automated fiberglass production lines, and the support plate is a necessary component of the unloading robot, used to temporarily store the yarn cake during the unloading process. When the yarn cake is unloaded from the drawing machine, its moisture content is approximately 10%, making it highly susceptible to collapse and deformation, affecting subsequent unwinding processes. To reduce yarn cake deformation, the bearing area of ​​the support plate needs to be increased. Support plates are generally arc-shaped, therefore the inner diameter of the yarn cake determines the diameter of the arc-shaped support plate.

[0003] Existing technology uses arc-shaped support tiles with a fixed diameter, which can only accommodate one type of yarn cake. However, in actual production, different yarn cakes of various sizes are produced on the same production line. Therefore, arc-shaped support tiles of different diameters are needed, which is not only costly but also time-consuming and labor-intensive to change between different sized support tiles, affecting production efficiency. Generally, in scenarios where yarn unloading robots are used, the yarn cakes are quite heavy, with a single yarn cake weighing up to 50kg, making manual unloading impossible. If a small-diameter support tile is used to unload a large-diameter yarn cake, the stress-bearing cross-section between the inner surface of the yarn cake and the support tile is very narrow, which can easily cause the yarn cake to deform, reduce the product qualification rate, and affect the use of subsequent processes. Summary of the Invention

[0004] In view of the above analysis, the present invention aims to provide a variable diameter jack for unloading glass fiber yarn and an unloading method to solve the above-mentioned technical problems existing in the prior art.

[0005] The objective of this invention is achieved as follows:

[0006] On the one hand, a variable diameter support device for unloading glass fiber yarn is provided, including a support sleeve, a telescopic mechanism, a plurality of supports and a drive mechanism. The supports are mounted on the support sleeve through the telescopic mechanism, and the supports are parallel to the axis of the support sleeve. The drive mechanism drives the telescopic mechanism to move the supports closer to or further away from the support sleeve in the radial direction of the support sleeve.

[0007] The towa has a fully retracted state, a partially extended state, and a fully extended state;

[0008] In the fully contracted state, the outer peripheral surfaces of the plurality of said towas have a first support diameter for temporarily storing the filament cake of the first support diameter;

[0009] In the partially unfolded state, the outer peripheral surfaces of the plurality of said towas have a second support diameter to temporarily store the filament cakes of the second support diameter;

[0010] In the fully extended state, the outer peripheral surfaces of the plurality of said towas have a third support diameter to temporarily store the filament cakes of the third support diameter;

[0011] The diameter of the first support is less than the diameter of the second support, which is less than the diameter of the third support.

[0012] Furthermore, the number of the toe pads is three, and the three toe pads are arranged on the same side of the semicircular surface of the support sleeve.

[0013] Furthermore, the length of the towa is 1.5-2.5 times the length of the support sleeve.

[0014] Furthermore, the telescopic mechanism includes:

[0015] A drive shaft is rotatably mounted inside the support sleeve via a bearing. One end of the drive shaft has a threaded section, and the other end has a connecting section. The threaded section extends out of the top end of the support sleeve, and the connecting section extends out of the tail end of the support sleeve.

[0016] The movable support is provided with an internal thread that is adapted to the external thread of the threaded section; the movable support can reciprocate linearly along the axis of the drive shaft as the drive shaft rotates.

[0017] The telescopic linkage assembly is a scissor-type structure, having a hinged first support rod and a second support rod. The first support rod has a first end a and a second end a, and the second support rod has a first end b and a second end b. The first end a is hinged to the tail end of the support sleeve, and the second end a is hinged to the bearing plate. The first end b is hinged to the bearing plate, and the second end b is hinged to the movable support.

[0018] Furthermore, the drive mechanism includes a servo motor, which is connected to the connecting section and configured to drive the drive shaft to rotate forward or backward, providing power for the toe to switch between the retracted and extended states.

[0019] Furthermore, there are two second support rods, which are arranged in parallel; the first support rod is rotatably positioned between the two parallel second support rods via a first pin.

[0020] Furthermore, the tail end of the support sleeve is provided with a flange seat, and the first end a is hinged to the flange seat through a fixed support.

[0021] Furthermore, the fixed support includes a horizontal part, a vertical part, and a limiting part arranged vertically; the vertical part is provided with a first through hole for hinged to the first end a of the first support rod; the horizontal part is provided with a bolt hole for connection to the flange seat by bolts; the limiting part is provided on the lower end face of the horizontal part, and the top surface of the flange seat is provided with a mounting groove that mates with the limiting part.

[0022] Furthermore, connecting plates are fixed on both sides of the first end a of the first support rod, and second through holes are provided on the two connecting plates. The vertical part of the fixed support is rotatably connected between the two connecting plates by passing through the first through hole and the second through hole with a second pin.

[0023] Furthermore, the towa has an arc-shaped plate, and a reinforcing plate is provided on the inner surface of the arc-shaped plate. The reinforcing plate is arranged along the axial direction of the arc-shaped plate. The outer surface of the arc-shaped plate has an arc-shaped support surface for supporting the inner circular surface of the silk cake.

[0024] Furthermore, there are two reinforcing plates, which are arranged in parallel and have a clamping space between them; a first connecting hole is provided in the middle of the reinforcing plate, and a second connecting hole is provided at one end of the reinforcing plate; the second end a of the first support rod is rotatably connected to the clamping space through a third pin; the first ends b of the two second support rods are rotatably connected to the outside of the clamping space through a fourth pin.

[0025] Furthermore, a support block is provided in the clamping space between the two second connecting holes. The support block is fixedly connected to the inner wall surface of the two reinforcing plates. The support block is provided with a through hole for the fourth pin to pass through. A support tube is provided at the second end a of the first support rod. Blind holes are provided on the inner wall surface of the two reinforcing plates. The diameter of the blind holes is greater than or equal to the outer diameter of the support tube. The support tube is provided with a through hole for the third pin to pass through.

[0026] Furthermore, the movable support has a screw cylinder, which is sleeved on the threaded section of the transmission shaft. The screw cylinder is provided with the same number of lugs as the telescopic connecting rod assembly. The second ends b of the two second support rods are rotatably connected to the lugs through a fifth pin.

[0027] Furthermore, a rotating sleeve is fitted onto the connecting section of the drive shaft; the rotating sleeve has a mounting hole, a limiting groove is provided on the wall of the mounting hole, and a protrusion is provided on the outer peripheral wall of the connecting section to engage with the limiting groove.

[0028] Furthermore, the variable diameter support device for unloading glass fiber yarn also includes a support base, which is an L-shaped structure with a vertically arranged first support plate and a second support plate. The first support plate is fixedly connected to the flange seat and has a through hole for the connecting section of the drive shaft to pass through. The second support plate is connected to the robot arm. A triangular support rib is provided in the right-angle space between the first support plate and the second support plate.

[0029] On the other hand, a method for unloading glass fiber yarn is provided, using the aforementioned variable diameter support device for unloading glass fiber yarn, the method comprising the following steps:

[0030] Based on the inner diameter of the silk cake, a servo motor is used to drive the transmission shaft to rotate, so that the outer circumferential surface of the multiple supports has a support diameter that matches the inner diameter of the silk cake.

[0031] The lifting mechanism of the yarn unloading robot moves to below the yarn cake and lifts it upward to detach the yarn cake from the drawing machine head. Then the lifting mechanism retracts and unloads the yarn cake from the drawing machine.

[0032] Place the inner circular surface of the silk cake on the lifting mechanism onto the support plate, so that the silk cakes leave the lifting mechanism one by one at the required intervals and are suspended on the support plate;

[0033] Place the silk cakes from the towa onto the spinning wheel.

[0034] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0035] a) The variable diameter support device for unloading glass fiber provided by the present invention sets multiple supports on the support sleeve through a telescopic mechanism. The support diameter of the variable support device can be precisely controlled online by a servo motor. Under the premise of ensuring the contact area between the yarn cake and the support, the support diameter of the support is continuously adjustable and can be used for yarn cakes of different diameters.

[0036] b) The glass fiber unloading method provided by the present invention adopts a variable diameter trolley device for glass fiber unloading, which enables the unloading robot on the same production line to automatically unload yarn cakes of different diameters, greatly reducing labor costs and improving work efficiency; at the same time, it meets the needs of flexible scheduling of fiber drawing production plans, making production planning more flexible. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this specification 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 recorded in the embodiments of this specification. For those skilled in the art, other drawings can be obtained based on these drawings.

[0038] Figure 1A schematic diagram of the unfolded state of the variable diameter bracket device for unloading glass fiber provided by the present invention. Figure 1 ;

[0039] Figure 2 A schematic diagram of the unfolded state of the variable diameter bracket device for unloading glass fiber provided by the present invention. Figure 2 ;

[0040] Figure 3 A schematic diagram of the shrinkage state of the variable diameter bracket device for unloading glass fiber provided by the present invention. Figure 1 ;

[0041] Figure 4 A schematic diagram of the shrinkage state of the variable diameter bracket device for unloading glass fiber provided by the present invention. Figure 2 ;

[0042] Figure 5 A schematic diagram of the variable diameter support device for unloading glass fiber provided by the present invention;

[0043] Figure 6 for Figure 5 A magnified view of a portion of region A in the middle;

[0044] Figure 7 A partial structural schematic diagram of the variable diameter bracket device for unloading glass fiber provided by the present invention;

[0045] Figure 8 This is a schematic diagram of the structure of the telescopic linkage assembly provided by the present invention;

[0046] Figure 9 This is a schematic diagram of the structure of the Towa provided by the present invention;

[0047] Figure 10 This is a schematic diagram of the structure of the drive shaft provided by the present invention;

[0048] Figure 11 This is a schematic diagram of the flange seat and support sleeve provided by the present invention;

[0049] Figure 12 A schematic diagram of the structure of the fixed support provided by the present invention;

[0050] Figure 13 This is a schematic diagram of the flange seat provided by the present invention;

[0051] Figure 14 A schematic diagram of the structure of the movable support provided by the present invention;

[0052] Figure 15 This is a schematic diagram of the rotating sleeve provided by the present invention.

[0053] Figure label:

[0054] 1. Drive shaft; 1-1. Threaded section; 1-2. Connecting section; 2. Flange seat; 2-1. Mounting groove; 3. Support sleeve; 4. Movable support; 4-1. Threaded barrel; 4-2. Ear seat; 5. Support plate; 5-1. Arc plate; 5-2. Reinforcing plate; 5-3. First connecting hole; 5-4. Second connecting hole; 5-5. Support block; 5-6. Slot; 6. Telescopic connecting rod assembly; 6-1. First support rod; 6-11. Second pin; 6-12. Third pin; 6-13. Connecting plate; 6-2. Second support rod; 6-21. Fourth pin; 6-22. Fifth pin; 6-3. First pin; 7. Rotating sleeve; 7-1. Mounting hole; 7-2. Limiting groove; 8. Fixed support; 8-1. Horizontal part; 8-2. Vertical part; 8-3. Limiting part; 9. Support seat. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0056] To facilitate understanding of the embodiments of this application, the following will provide further explanation and description with reference to the accompanying drawings and specific embodiments. These embodiments do not constitute a limitation on the embodiments of this application.

[0057] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the term "connected" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0058] Throughout the text, the terms “top,” “bottom,” “above,” “below,” and “on top” refer to the relative positions of components of the device, such as the relative positions of the top and bottom substrates within the device. It is understood that the device is multifunctional and independent of its spatial orientation.

[0059] Example 1

[0060] A specific embodiment of the present invention, such as Figures 1 to 5As shown, a variable diameter support device for unloading glass fiber yarn is disclosed, including a support sleeve 3, a telescopic mechanism and a plurality of supports 5. The supports 5 are mounted on the support sleeve 3 through the telescopic mechanism. The supports 5 are parallel to the axis of the support sleeve 3 and can move closer to or further away from the support sleeve 3 in the radial direction.

[0061] The Towa 5 has a fully retracted state, a partially extended state, and a fully extended state;

[0062] In the fully contracted state, the outer peripheral surfaces of the plurality of said towas 5 have a first support diameter for temporarily storing the filament cake of the first support diameter;

[0063] In the partially unfolded state, the outer peripheral surfaces of the plurality of said towas 5 have a second support diameter to temporarily store the filament cakes of the second support diameter;

[0064] In the fully extended state, the outer peripheral surfaces of the plurality of said towas 5 have a third support diameter to temporarily store the filament cakes of the third support diameter;

[0065] The diameter of the first support is less than the diameter of the second support, which is less than the diameter of the third support.

[0066] In this embodiment, the first support diameter is the minimum support diameter of the variable diameter support device, the third support diameter is the maximum support diameter of the variable diameter support device, and the second support diameter is not a fixed value, but can be any value between the first and third support diameters. The second support diameter value is continuously adjustable through a telescopic mechanism. Therefore, the variable diameter support device for unloading glass fiber in this embodiment uses a telescopic structure to achieve adjustable support surface diameter of multiple support tiles 5. Thus, by using one specification of the variable diameter support device for unloading glass fiber in this embodiment on a production line, it is possible to temporarily store yarn cakes of any diameter between the first support diameter (inclusive) and the third support diameter (inclusive), without the need to prepare arc-shaped support tiles of different diameters, thereby reducing costs and improving production efficiency.

[0067] It should be noted that in this embodiment, in the fully retracted state, the outer circumferential surfaces of each tile 5 are on a regular circular surface, and the first support diameter is equal to the diameter corresponding to the outer circumferential surface of the tile 5. In the partially unfolded and fully unfolded states, the outer circumferential surfaces of each tile 5 are not on a regular circular surface, but approximately on a circular surface. In this case, the support diameter of the variable diameter tile device refers to the circle formed by the central protrusions of the outer circumferential surfaces of the multiple tiles 5, and the diameter of this circle is the support diameter in the unfolded state. However, the approximately circular surface formed after the multiple tiles are unfolded can also satisfy the support of the silk cake, because the inner circular surface of the silk cake can deform to a certain extent and can fit the outer circumferential surfaces of the multiple tiles.

[0068] In this embodiment, the number of the three support tiles 5 is three, and the three support tiles 5 are arranged on the same side of the semi-circular surface of the support sleeve 3. When supporting the yarn cake, the three support tiles of the variable diameter support tile device include a middle support tile and two side support tiles located on both sides of the middle support tile. The supporting surface of the middle support tile faces upward, and the supporting surfaces of the other two side support tiles are inclined upward. It can also be understood that the support sleeve 3 has a horizontal plane of symmetry through the central axis, the three support tiles 5 are arranged above the horizontal plane of symmetry, the middle support tile is perpendicular to the horizontal plane of symmetry in the radial movement direction of the support sleeve 3, and the middle support tile forms an angle of 45°-60° with the side support tiles on both sides. The above structural arrangement can not only meet the requirements of effective support for the inner circular surface of the yarn cake, but also reduce the overall weight of the support tile device and improve the diameter change flexibility of the variable diameter support tile device.

[0069] In this embodiment, as Figures 7 to 8 As shown, the telescopic mechanism is a scissor telescopic mechanism, which includes a drive shaft 1, a movable support 4, a telescopic link assembly 6, and a drive mechanism; the number of telescopic link assemblies 6 is the same as the number of bearings 5.

[0070] Among them, such as Figure 10 As shown, the drive shaft 1 is rotatably mounted inside the support sleeve 3 via a bearing. One end of the drive shaft 1 is provided with a threaded section 1-1, and the other end is provided with a connecting section 1-2. The threaded section 1-1 extends out of the top end of the support sleeve 3, and the connecting section 1-2 extends out of the tail end of the support sleeve 3.

[0071] The movable support 4 is provided with an internal thread, which is adapted to the external thread of the threaded section 1-1; the movable support 4 is threadedly connected to the transmission shaft 1, and can move linearly back and forth along the axis of the transmission shaft 1 as the transmission shaft 1 rotates.

[0072] The telescopic linkage assembly 6 is a scissor-type structure, having a hinged first support rod 6-1 and a second support rod 6-2. The first support rod 6-1 has a first end a and a second end a, and the second support rod 6-2 has a first end b and a second end b. The first end a is hinged to the tail end of the support sleeve 3, and the second end a is hinged to the bearing 5. The first end b is hinged to the bearing 5, and the second end b is hinged to the movable support 4.

[0073] The drive mechanism is connected to the connecting section 1-2 and is configured to drive the drive shaft 1 to rotate forward or backward, providing power for the towa 5 to switch between the retracted and extended states.

[0074] Furthermore, the drive mechanism includes a servo motor. The output shaft of the servo motor is connected to the connecting section 1-2 of the transmission shaft. The servo motor is fixed to the flange seat. The servo motor can precisely control the unfolding support diameter of the variable diameter support device. During operation, the unloading robot controls the servo motor to drive the transmission shaft 1 to rotate in the forward and reverse directions according to the different specifications of the unloaded yarn cake. This, in turn, drives the movable support 4 to move back and forth along the transmission shaft 1 through the threaded pair, causing the first support rod 6-1 and the second support rod 6-2 to rotate around the pin shaft. This further drives the support 5 to rise and fall, completing the telescopic action of the scissor telescopic mechanism. This allows the diameter of the three sets of arc-shaped support tiles to change synchronously, adapting to the needs of different yarn cake inner diameter changes. This enables the unloading robot to unload both large-diameter and small-diameter yarn cakes.

[0075] In this embodiment, as Figure 11 As shown, the support sleeve 3 is a circular sleeve, and one end of the support sleeve 3 is a circular flange structure, that is, the tail end of the support sleeve 3 is provided with a flange seat 2. The circular sleeve 3 is welded to the flange seat 2, and the support sleeve 3 is fixed to the yarn unloading robot arm by the flange seat and bolts. The first end a of the first support rod 6-1 is hinged to the flange seat 2 by a fixed support 8, such as three sets of fixed supports 8 being fixed to the flange seat by bolts. Specifically, as Figure 12 As shown, the fixed support 8 includes a horizontal part 8-1 and a vertical part 8-2 arranged vertically; the vertical part 8-2 is provided with a first through hole for hinged to the first end a of the first support rod 6-1; the horizontal part 8-1 is provided with bolt holes for connection to the flange seat 2 by bolts.

[0076] To improve the connection stability between the fixed support 8 and the flange seat 2 and prevent loosening during operation, a limiting part 8-3 is provided on the lower end face of the horizontal part 8-1, and a mounting groove 2-1 that mates with the limiting part 8-3 is provided on the top surface of the flange seat 2. Figure 13 As shown. When the fixed support 8 is fixed on the flange seat 2, the limiting part 8-3 is inserted into the limiting part. The limiting part 8-3 cooperates with the bolts to better connect the fixed support 8 and the flange seat 2, preventing the fixed support 8 and the flange seat 2 from loosening during operation of the reducing bearing, and ensuring the working reliability of the reducing bearing device.

[0077] In one alternative embodiment, there are two second support rods 6-2, which are arranged in parallel. The first ends of the two second support rods 6-2 are connected by a fourth pin 6-21, and the second ends of the two second support rods 6-2 are connected by a fifth pin 6-22. The two parallel second support rods 6-2 are connected by the fourth pin 6-21 and the fifth pin 6-22.

[0078] In this embodiment, the first support rod 6-1 is rotatably mounted between two parallel second support rods 6-2 via a first pin 6-3, which can improve the load-bearing strength of the telescopic linkage assembly 6. Further, connecting plates 6-13 are fixedly mounted on both sides of the first end a of the first support rod 6-1. Second through holes are provided on the two connecting plates 6-13. A second pin 6-11 passes through the first and second through holes to rotatably connect the vertical part 8-2 of the fixed support 8 between the two connecting plates 6-13. The vertical part 8-2 of the fixed support 8 can be installed in the space between the two connecting plates 6-13. After the two connecting plates 6-13 are welded to the first support rod 6-1, a U-shaped structure is formed. The vertical part 8-2 of the fixed support 8 is rotatably mounted within the U-shaped structure space via the pin 6-11.

[0079] In this embodiment, the length of the towa 5 is 1.5-2.5 times the length of the support sleeve 3; for example... Figure 9 As shown, a reinforcing plate 5-2 is provided on the inner surface of the arc-shaped plate 5-1. The reinforcing plate 5-2 is arranged along the axial direction of the arc-shaped plate 5-1 and is perpendicular to the inner surface of the arc-shaped plate 5-1. The outer surface of the arc-shaped plate 5-1 has an arc-shaped support surface for supporting the inner circular surface of the yarn cake. This structure ensures support strength while maximizing the temporary storage of yarn cakes, thus improving yarn unloading efficiency.

[0080] Furthermore, there are two reinforcing plates 5-2, arranged in parallel, with a clamping space between them. Each reinforcing plate 5-2 has a first connecting hole 5-3 in its center and a second connecting hole 5-4 at one end. The second end a of the first support rod 6-1 is rotatably connected to the clamping space via a third pin 6-12. The first ends b of the two second support rods 6-2 are rotatably connected to the outside of the clamping space via a fourth pin 6-21. In other words, the first ends b of the two second support rods 6-2 clamp the two reinforcing plates 5-2. This structural arrangement not only improves the support strength of the support plate 5 but also allows for a longer length, enabling the support and temporary storage of a larger number of yarn cakes and improving yarn unloading efficiency.

[0081] To enhance the connection strength between the telescopic linkage assembly 6 and the bearing 5, a support block 5-5 is provided within the clamping space between the two second connecting holes 5-4. The support block 5-5 is fixedly connected to the inner walls of the two reinforcing plates 5-2, and has a through hole for the fourth pin 6-21 to pass through. A support tube is provided at the second end a of the first support rod 6-1, and blind holes 5-6 are provided on the inner walls of the two reinforcing plates 5-2. The diameter of the blind holes 5-6 is greater than or equal to the outer diameter of the support tube. The support tube has a through hole for the third pin 6-12 to pass through, and its axis is perpendicular to the first support rod 6-1. Both ends of the support tube are rotatably disposed within the blind holes 5-6. By providing the support block and support tube, the support strength at the ends of the two reinforcing plates 5-2 can be enhanced, preventing stress deformation of the reinforcing plates 5-2 at the connection with the telescopic linkage assembly 6, thereby improving the operational reliability of the variable diameter bearing.

[0082] In this embodiment, as Figure 14 As shown, the movable support 4 has a screw cylinder 4-1 (its internal thread is not shown), which is sleeved on the threaded section 1-1 of the transmission shaft 1. The screw cylinder 4-1 has the same number of lugs 4-2 as the telescopic connecting rod assembly 6. The second ends b of the two second support rods 6-22 are rotatably connected to the lugs 4-2 through fifth pins. For example, three sets of lugs 4-2 are machined on the movable support 4 and paired with three sets of fixed supports 8. The three sets of scissor-type telescopic connecting rod assemblies are arranged at a certain angle on the same side of the semicircular surface of the support sleeve 3, and are not arranged along the full circumference of the support sleeve 3.

[0083] In one alternative embodiment, the connecting section 1-2 of the drive shaft 1 is directly connected to the output shaft of the drive mechanism via a coupling.

[0084] In another alternative embodiment, the connecting section 1-2 of the drive shaft 1 is detachably connected to the output shaft of the drive mechanism via an adapter. When the servo motor malfunctions, the servo motor can be separated from the drive shaft 1, and the drive shaft 1 can be manually rotated to extend and retract the pallet device. Specifically, the adapter includes a rotating sleeve 7, which is disposed on the connecting section 1-2 of the drive shaft 1 and is detachably connected to the drive end of the servo motor; as shown... Figure 15 As shown, the rotating sleeve 7 has a mounting hole 7-1, and a limiting groove 7-2 is provided on the wall of the mounting hole 7-1. The outer peripheral wall of the connecting section 1-2 has a protrusion that engages with the limiting groove 7-2. In the manual rotation of the drive shaft, a locking component is also included to lock the rotational position of the drive shaft 1. This structural design, on the one hand, prevents relative rotation between the drive shaft 1 and the rotating sleeve 7 under servo motor drive, ensuring the rotational accuracy of the drive shaft 1; on the other hand, it also ensures the normal diameter-changing function of the variable diameter draggear device when the servo motor malfunctions.

[0085] In this embodiment, the variable diameter support device for unloading glass fiber yarn also includes a support base 9, such as... Figures 5 to 6 As shown, the support base 9 has an L-shaped structure with a vertically arranged first support plate and a second support plate. The first support plate is fixedly connected to the flange seat 2, and the first support plate is provided with a through hole for the connecting section 1-2 of the drive shaft 1 to pass through. The second support plate is connected to the robot arm. Triangular support ribs are provided in the right-angle space between the first support plate and the second support plate to improve the support strength of the support base 9.

[0086] This embodiment also provides a method for unloading glass fiber yarn. Using the variable diameter support device for unloading glass fiber yarn described in this embodiment, the unloading method includes the following steps:

[0087] Based on the inner diameter of the unloaded yarn cake, the servo motor is controlled to drive the transmission shaft 1 to rotate, so that the outer circumferential surface of the multiple rollers 5 has a support diameter that matches the inner diameter of the yarn cake.

[0088] The lifting mechanism of the yarn unloading robot moves to below the yarn cake and lifts it upward to detach the yarn cake from the drawing machine head. Then the lifting mechanism retracts and unloads the yarn cake from the drawing machine. After unloading the yarn cake from the drawing machine, the yarn unloading robot places the inner circular surface of the yarn cake on the lifting mechanism onto the support plate 5, so that the yarn cake leaves the lifting mechanism in sequence at the required intervals and is suspended on the support plate 5, which facilitates cutting and weighing of the yarn. Then the yarn cake on the support plate 5 is placed on the yarn cart.

[0089] Compared with existing technologies, the variable diameter support device and method for unloading glass fiber yarn provided in this embodiment, with the variable diameter support device precisely controlled by a servo motor, can change the diameter of the support online. While ensuring the contact area between the yarn cake and the support, the diameter of the support is continuously adjustable, making it suitable for yarn cakes of different diameters. This solves the problem that unloading robots on the same production line cannot automatically unload yarn cakes of different diameters, significantly reducing labor costs and improving work efficiency. It also meets the need for flexible scheduling in fiber drawing production plans, allowing for more flexible production planning.

[0090] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this application. It should be understood that the above description is only a specific embodiment of this application and is not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A variable diameter bobbin device for use in glass fiber unwinding, characterized by, The device includes a support sleeve, a telescopic mechanism, multiple support plates, and a servo motor. The support sleeve is fixed to the yarn unloading robot arm. The support plates are mounted on the support sleeve via the telescopic mechanism. The support plates are parallel to the axis of the support sleeve. The servo motor drives the telescopic mechanism to move the support plates closer to or further away from the support sleeve in the radial direction. The number of the support tiles is three, and the three support tiles are arranged on the same side of the semi-circular surface of the support sleeve; the support sleeve has a horizontal plane of symmetry through the central axis, the three support tiles are arranged above the horizontal plane of symmetry, the middle support tile is perpendicular to the horizontal plane of symmetry along the radial movement direction of the support sleeve, and the middle support tile forms an angle of 45°-60° with the side support tiles on both sides; when supporting the wire cake, the supporting surface of the middle support tile faces upward, and the supporting surfaces of the other two side support tiles are inclined upward; The telescopic mechanism includes: A drive shaft is rotatably mounted inside the support sleeve via bearings. One end of the drive shaft has an integrally formed threaded section, and the other end has a connecting section. The threaded section extends out of the top end of the support sleeve, and the connecting section extends out of the tail end of the support sleeve and is connected to the servo motor. The servo motor is configured to drive the drive shaft to rotate forward or in reverse. The movable support is provided with an internal thread that is adapted to the external thread of the threaded section; the movable support can rotate with the drive shaft and reciprocate linearly along the axis of the drive shaft. The telescopic linkage assembly is a scissor-type structure, having a hinged first support rod and a second support rod. The first support rod has a first end a and a second end a, and the second support rod has a first end b and a second end b. The first end a is hinged to the tail end of the support sleeve, and the second end a is hinged to the bearing plate. The first end b is hinged to the bearing plate, and the second end b is hinged to the movable support. There are two second support rods, and the first support rod is rotatably positioned between the two parallel second support rods via a first pin. The length of the support sleeve is 1.5-2.5 times the length of the support sleeve; the support sleeve has an arc-shaped plate, and two parallel reinforcing plates are arranged on the inner surface of the arc-shaped plate. The reinforcing plates are arranged along the axial direction of the arc-shaped plate and are perpendicular to the inner surface of the arc-shaped plate; there is a clamping space between the two reinforcing plates; a first connecting hole is provided in the middle of the reinforcing plate, and a second connecting hole is provided at one end of the reinforcing plate; the second end a of the first support rod is rotatably connected to the clamping space through a third pin; the first ends b of the two second support rods are rotatably connected to the outside of the clamping space through a fourth pin; a support block is also provided in the clamping space between the two second connecting holes. The support block is fixedly connected to the inner wall surface of the two reinforcing plates, and the support block has a through hole for the fourth pin to pass through; a support tube is provided at the second end a of the first support rod, and blind holes are provided on the inner wall surface of the two reinforcing plates. The diameter of the blind holes is greater than or equal to the outer diameter of the support tube, and the support tube has a through hole for the third pin to pass through.

2. The reducing bushing device for glass fiber unwinding according to claim 1, characterized in that, The servo motor is connected to the connecting section to provide power for the toe to switch between the retracted and extended states.

3. The reducing bushing device for glass fiber unwinding according to claim 1, characterized in that, The tail end of the support sleeve is provided with a flange seat, and the first end a is hinged to the flange seat through a fixed support.

4. The reducing bushing device for glass fiber unwinding according to claim 3, characterized in that, The fixed support includes a horizontal part and a vertical part that are vertically arranged; The vertical part is provided with a first through hole so that it can be hinged to the first end a of the first support rod; The horizontal section is provided with bolt holes for connection to the flange seat by bolts; the lower end face of the horizontal section is provided with a limiting part, and the top surface of the flange seat is provided with a mounting groove that mates with the limiting part.

5. The reducing bushing apparatus for glass fiber de-spooling according to claim 4, wherein, Connecting plates are fixed on both sides of the first end a of the first support rod. A second through hole is provided on the two connecting plates. The vertical part of the fixed support is rotatably connected between the two connecting plates by passing through the first through hole and the second through hole with a second pin.

6. The reducing bushing device for glass fiber unwinding according to any one of claims 1 to 5, characterized in that, The outer surface of the arc-shaped plate has an arc-shaped support surface for supporting the inner circular surface of the silk cake.

7. A glass fiber unwinding method characterized by, The method using the glass fiber unloading variable diameter bracket device according to any one of claims 1 to 6 comprises the following steps: Based on the inner diameter of the silk cake, a servo motor is used to drive the transmission shaft to rotate, so that the outer circumferential surface of the multiple supports has a support diameter that matches the inner diameter of the silk cake. The lifting mechanism of the yarn unloading robot moves to below the yarn cake and lifts it upward to detach the yarn cake from the drawing machine head. Then the lifting mechanism retracts and unloads the yarn cake from the drawing machine. Place the inner circular surface of the silk cake on the lifting mechanism onto the support plate, so that the silk cakes leave the lifting mechanism one by one at the required intervals and are suspended on the support plate; Place the silk cakes from the towa onto the spinning wheel.

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