Yarn supporting device suitable for winding machine

Abstract

The utility model discloses a yarn supporting device suitable for a bobbin winder, and relates to the technical field of textile equipment, the yarn supporting device is arranged on the bobbin winder, the yarn supporting device comprises a rollable yarn supporting plate, the yarn supporting plate is curled to form a cylindrical supporting cylinder, and the supporting cylinder is arranged in the inner circle face of a spinning cake in a supporting and sleeving mode; the yarn supporting device further comprises a front locking mechanism and a rear locking mechanism, the front locking mechanism and the rear locking mechanism are arranged at the two ends of the supporting cylinder respectively, and when the yarn supporting plate is curled into the supporting cylinder, the front locking mechanism and the rear locking mechanism are used for clamping the supporting cylinder and keeping the shape of the supporting cylinder. The yarn supporting device has the advantages that a simple yarn supporting plate structure is adopted, the yarn supporting device is light in weight, and stability under rotation is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of textile equipment, in particular to a yarn supporting device suitable for a winding machine. Background Art

[0002] Viscose filament winding means that after the silk cake is washed, dehydrated, dried and humidified, the viscose filament is actively unwound by a precision high-speed winding machine to be wound into parallel bobbins or three-conical bobbins, that is, the viscose fiber is made into a tube. During this yarn winding process, the silk cake needs to be replaced. The silk cake is concentric and there is no preset sleeve in the inner circular surface. Therefore, when unwinding, the silk cake needs to be placed on the unwinding shaft driven by the unwinding motor, so that the silk cake can rotate synchronously with the unwinding shaft driven by the unwinding motor. Therefore, it is necessary to control the unwinding effect of the silk cake to avoid deformation of the silk cake during rotation, thereby ensuring the quality and performance of the final product.

[0003] On June 16, 2020, a Chinese patent document published a yarn supporter for reeling hanks, with the patent publication number CN210765888U. This solution uses a yarn supporter to stretch the loose yarn after expansion or contraction, and automatically adjusts the degree of opening as the layers of yarn are withdrawn to ensure that the outer layer of yarn is taut and convenient for yarn unwinding. However, when using multiple external support plates to expand the inner circular surface of the silk cake outward, the silk cake may be over-stretched, causing the silk cake to be subjected to a greater support force. At the same time, the inner circular surface of the silk cake changes from a circle to a polygon. When rotating at high speed, it is not conducive to the stability of the silk cake during unwinding. When the silk cake is unwound and becomes thinner, and under the action of rotation, it is easy to cause the lines on the silk cake to become scattered, and part of it is entangled on the yarn supporter.

[0004] like Fig. 9 As shown, the yarn support device used in the yarn support device of some current precision high-speed winding machines includes a closed-loop S-shaped steel wire support spring, which has a large weight and elastic force. When in use, it is compressed and clamped on the inner cylindrical surface of the silk cake to support and shape the silk cake. The locking device is a cylindrical cone with a threaded through hole in the middle, which is used to clamp the support spring and fix it on the unwinding shaft. It is heavy and has a bulky structure. When the spring is compressed and clamped inside the silk cake, the inside of the silk cake changes from a circle to a polygon, which destroys the stability of the silk cake during high-speed rotation. At the same time, when the silk cake is about to be unwound, the inside and outside of the silk cake gradually become thinner, resulting in the binding force of the silk cake on the support spring becoming smaller and smaller. When it is less than the elastic force of the support spring, the support spring opens rapidly under the centrifugal force caused by high-speed rotation, destroying the internal structure of the silk cake, resulting in a large number of messy and hairy silk. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the utility model provides a yarn supporting device suitable for a bobbin winding machine, which can solve the problems that the silk cake has low stability when rotating at high speed, and that the existing yarn supporting device easily destroys the internal structure of the silk cake, causing a large number of messy and fuzzy yarns.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions: a yarn supporting device suitable for a bobbin winding machine, the bobbin winding machine includes a winding mechanism, a guide roller mechanism, a controller panel, a tension mechanism and an unwinding mechanism, a continuous passage for unwinding the silk strip into a bobbin is formed between the winding mechanism, the guide roller mechanism, the controller panel, the tension mechanism and the unwinding mechanism, including a yarn supporting device, the yarn supporting device is arranged on the unwinding mechanism, the yarn supporting device includes a curlable yarn supporting plate, a front locking mechanism and a rear locking mechanism, the yarn supporting plate is curled to form a cylindrical supporting tube, the outer diameter of the supporting tube is matched with the inner diameter of the inner circle of the silk cake; the front locking mechanism and the rear locking mechanism are respectively arranged at both ends of the supporting tube, and when the yarn supporting plate is curled into the supporting tube, the front locking mechanism and the rear locking mechanism are used to clamp the supporting tube.

[0007] Furthermore, the yarn support plate is a rectangular yarn support plate, and the maximum diameter of the support tube is greater than or equal to the maximum inner diameter of the inner circle of the yarn cake.

[0008] Furthermore, the yarn support plate is made of a flexible material, and the four corners of the yarn support plate are rounded.

[0009] Furthermore, a first annular groove is provided on one side of the front locking mechanism, and a second annular groove is provided on a side of the rear locking mechanism opposite to the front locking mechanism, and both ends of the support tube are respectively clamped in the first annular groove and the second annular groove.

[0010] Furthermore, the inner groove walls of the first annular groove and the second annular groove are inclined to form a guide portion, and the guide portion is used for the end of the support tube to smoothly abut against the groove bottom of the first annular groove and / or the second annular groove.

[0011] Furthermore, the middle parts of the front locking mechanism and the rear locking mechanism are both provided with mounting holes along the axial direction, and the front locking mechanism and the rear locking mechanism are coaxially penetrated on the rotating shaft through the mounting holes.

[0012] Furthermore, a support disk is sleeved on the rotating shaft, a middle portion of the rotating shaft extends radially to form a mounting portion, and the support disk is slidably sleeved on the mounting portion of the rotating shaft.

[0013] Furthermore, the front locking mechanism and the rear locking mechanism have locking holes coaxially arranged with the mounting hole on the sides opposite to each other, and the outer side of the rotating shaft is sleeved with a movable locking member for limiting the front locking mechanism and the rear locking mechanism.

[0014] Furthermore, the winding mechanism includes a winding motor and a handle; the guide roller mechanism includes a tube and a roller shaft that holds the silk strip close to the tube; the controller panel is used to control the start and stop of the winding mechanism, the unwinding mechanism and the tension mechanism, as well as the calibration of the tension mechanism; the tension mechanism includes a tension wheel motor and a tension disk motor; the unwinding mechanism includes an unwinding motor, the rotating shaft is transmission-connected to the unwinding motor, and the front locking mechanism and the rear locking mechanism are installed on the rotating shaft.

[0015] In summary, the beneficial technical effects brought by the utility model are:

[0016] 1. A flexible yarn support plate is used, which makes it convenient to curl the yarn support plate into a cylindrical support tube of suitable diameter according to the size of the inner circle of the silk cake, and clamp the support tube on the inner circle surface of the silk cake. This makes the support structure simpler and the weight of the support tube itself lighter. The support tube can be more fully in contact with the inner circle surface of the silk cake due to its own flexibility, which is more convenient when installing or replacing the silk cake. Since the yarn support plate and the curled yarn support tube are complete surfaces, the phenomenon of silk entanglement can be avoided.

[0017] 2. After curling, the support tube provides tension to the inner surface of the yarn cake under the action of its own elasticity. When rotating, the locking devices at both ends are used to fix the support tube to prevent the support tube from automatically opening due to rotation. Even when the yarn cake gradually becomes thinner, it can also avoid deformation of the yarn cake due to the tension of the support tube itself and the centrifugal force during rotation.

[0018] 3. By changing the material and structure of the yarn support plate and the locking device, the weight is reduced, the problem of hairy yarns in the inner layer of the silk cake and disordered yarns on the surface is solved, and the structural stability of the silk cake during high-speed rotation is ensured. In addition, the yarn support device can be better installed on the rotating shaft and cooperate with the winder to complete the unwinding work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a yarn support device suitable for a winding machine.

[0020] Figure 2 It is a schematic diagram of the structure of the yarn support plate and the support tube.

[0021] Figure 3 This is a cross-sectional view of the front locking mechanism.

[0022] Figure 4 for Figure 3 Right view of the center front locking mechanism.

[0023] Figure 5 for Figure 3 Left side view of the center front locking mechanism.

[0024] Figure 6 It is a schematic diagram of the socket connection between the rotating shaft and the supporting disk.

[0025] Figure 7 This is a schematic diagram of the installation of the silk cake on the support tube.

[0026] Figure 8 It is a schematic diagram of the transmission working of the high-speed winding machine.

[0027] Fig. 9 It is a schematic diagram of the S-shaped closing spring structure in the prior art.

[0028] The accompanying drawings are described as follows: 1. Winding machine; 11. Winding mechanism; 111. Winding motor; 112. Handle; 12. Guide roller mechanism; 121. Tube; 122. Roller; 13. Controller panel; 14. Tension mechanism; 141. Tension wheel motor; 142. Tension disk motor; 15. Unwinding mechanism; 151. Unwinding motor; 16. Yarn break sensor; 17. Rewinding sensor; 2. Yarn supporting device; 21. Yarn supporting plate; 22. Support tube; 3. Front locking mechanism; 31. First annular groove; 32. Guide part; 33. Mounting hole; 34. Locking hole; 4. Rear locking mechanism; 41. Second annular groove; 5. Rotating shaft; 6. Locking member; 7. Support disk. DETAILED DESCRIPTION

[0029] The utility model is further described in detail below in conjunction with the embodiments.

[0030] Example 1

[0031] like Figure 1-Figure 5 As shown, this embodiment discloses a yarn holding device suitable for a winding machine, the winding machine 1 includes a winding mechanism 11, a guide roller mechanism 12, a controller panel 13, a tension mechanism 14 and an unwinding mechanism 15, a continuous passage for unwinding the silk strip into a tube is formed between the winding mechanism 11, the guide roller mechanism 12, the controller panel 13, the tension mechanism 14 and the unwinding mechanism 15, including a yarn holding device 2, the yarn holding device 2 is arranged on the unwinding mechanism 15, the yarn holding device 2 includes a curlable yarn holding plate 21, a front locking mechanism 3 and a rear locking mechanism 4, the yarn holding plate 21 is curled to form a cylindrical supporting tube 22, the outer diameter of the supporting tube 22 is matched with the inner diameter of the inner circle of the silk cake; the front locking mechanism 3 and the rear locking mechanism 4 are respectively arranged at both ends of the supporting tube 22, when the yarn holding plate 21 is curled into the supporting tube 22, the front locking mechanism 3 and the rear locking mechanism 4 are used to clamp the supporting tube 22.

[0032] The silk cake is a hollow, short and fat cylinder. By changing the material and structure of the yarn support plate 21, the front locking mechanism 3 and the rear locking mechanism 4, the problem of hairy silk in the inner layer of the silk cake and messy silk on the surface is solved, and the structural stability of the silk cake during high-speed rotation is ensured, thereby improving the unwinding effect of the silk cake. Specifically, when the viscose filaments are formed into a tube, a flexible yarn support plate 21 is used to curl to form a support tube 22. The yarn support plate 21 is made of PVC and other materials to form a rectangular thin plate structure, which has the characteristics of lighter weight, less tension, and better fitting effect. Among them, because the yarn support plate 21 can be curled into a tube shape, the integrity of the inner circular surface of the silk cake is ensured. Therefore, it can better fit with the inner circular surface of the silk cake, and the contact area is larger, so that the support tube 22 has better support for the silk cake. The tension of the yarn support plate 21 is compared to Fig. 9 The tension of the steel wire spring shown is smaller. When the silk cake is about to be unwound, since the two ends of the support tube 22 are respectively clamped by the front locking mechanism 3 and the rear locking mechanism 4, the stability of the silk cake structure can be ensured. When rotating at high speed, it can prevent the support tube 22 from opening and damaging the internal structure of the silk cake, thereby affecting the unwinding of the silk cake.

[0033] Example 2

[0034] The present embodiment discloses a yarn holding device suitable for a bobbin winding machine, the bobbin winding machine 1 comprises a winding mechanism 11, a guide roller mechanism 12, a controller panel 13, a tension mechanism 14 and an unwinding mechanism 15, wherein the winding mechanism 11, the guide roller mechanism 12, the controller panel 13, the tension mechanism 14 and the unwinding mechanism 15 form a continuous passage for unwinding the silk strip into a bobbin, and the yarn holding device 2 is arranged on the unwinding mechanism 15, the yarn holding device 2 comprises a curlable yarn holding plate 21, a front locking mechanism 3 and a rear locking mechanism 4, the yarn holding plate 21 is curled to form a cylindrical supporting tube 22, the outer diameter of the supporting tube 22 matches the inner diameter of the inner circle of the silk cake; the front locking mechanism 3 and the rear locking mechanism 4 are respectively arranged at both ends of the supporting tube 22, and when the yarn holding plate 21 is curled into the supporting tube 22, the front locking mechanism 3 and the rear locking mechanism 4 are used to clamp the supporting tube 22.

[0035] In this embodiment, the yarn support plate 21 is rectangular, and the maximum diameter of the support tube 22 is greater than or equal to the maximum inner diameter of the inner circle of the silk cake. In this way, since the yarn support plate 21 has a certain length, it is convenient to curl the yarn support plate 21 into the support tube 22. When the support tube 22 is supported on the inner circle surface of the silk cake, it can be ensured that the side of the support tube 22 fits the inner circle surface of the silk cake, which plays a supporting role for the silk cake; the yarn support plate 21 is rectangular, which means that the length of the yarn support plate 21 is greater than or equal to the width, and the maximum diameter of the support tube 22 is greater than or equal to the maximum inner diameter of the inner circle of the silk cake, which means that after the yarn support plate 21 is curled into the support tube 22, the maximum diameter of the support tube 22 after expansion (the two sides of the support plate are in contact) is greater than the normal diameter of the inner circle of the silk cake. Preferably, one side of the support plate 21 after curling should exceed the other side, so that a better tension is formed on the silk cake; for specific reference Figure 7 As shown, the yarn cake is installed on the wound support tube 22, and the maximum diameter of the support tube 22 that can be rolled by the yarn support plate 21 (that is, the state where the two sides of the support plate abut against each other) is larger than the inner diameter of a general yarn cake.

[0036] Example 3

[0037] like Figure 1-Figure 6 As shown, this embodiment discloses a yarn holding device suitable for a winding machine, the winding machine 1 includes a winding mechanism 11, a guide roller mechanism 12, a controller panel 13, a tension mechanism 14 and an unwinding mechanism 15, a continuous passage for unwinding the silk strip into a tube is formed between the winding mechanism 11, the guide roller mechanism 12, the controller panel 13, the tension mechanism 14 and the unwinding mechanism 15, including a yarn holding device 2, the yarn holding device 2 is arranged on the unwinding mechanism 15, the yarn holding device 2 includes a curlable yarn holding plate 21, a front locking mechanism 3 and a rear locking mechanism 4, the yarn holding plate 21 is curled to form a cylindrical supporting tube 22, the outer diameter of the supporting tube 22 is matched with the inner diameter of the inner circle of the silk cake; the front locking mechanism 3 and the rear locking mechanism 4 are respectively arranged at both ends of the supporting tube 22, when the yarn holding plate 21 is curled into the supporting tube 22, the front locking mechanism 3 and the rear locking mechanism 4 are used to clamp the supporting tube 22.

[0038] In the specific implementation, the yarn support plate 21 is made of a flexible material, including a PVC material that can be bent into a cylindrical shape and restored to a rectangular shape, and the four corners of the yarn support plate 21 are rounded. Compared with the yarn support plate 21 with right angles, the four corners of the yarn support plate 21 can be rounded to avoid the four corners of the yarn support plate 21 from hooking the yarn cake, disturbing the yarn, etc., and at the same time, it can avoid damage to the yarn cake during the use of clamping the yarn cake or changing the yarn cake. The front locking mechanism 3 and the rear locking mechanism 4 are also made of plastic.

[0039] The front locking mechanism 3 and the rear locking mechanism 4 are respectively provided with a first annular groove 31 and a second annular groove 41 on the opposite side, and the two ends of the support tube 22 are respectively clamped in the first annular groove 31 and the second annular groove 41. The two ends of the support tube 22 are respectively clamped in the first annular groove 31 and the second annular groove 41, and the size of the first annular groove 31 and the second annular groove 41 can be used to accommodate the end of the curled support tube 22. After the two front locking mechanisms 3 and the rear locking mechanism 4 clamp the support tube 22, the support tube 22, the silk cake, the front locking mechanism 3 and the rear locking mechanism 4 can be driven by the unwinding motor 151 to realize the synchronous rotation of the support tube 22, so that the silk on the silk cake is wound on the bobbin.

[0040] The inner groove walls of the first annular groove 31 and the second annular groove 41 are inclined to form a guide portion 32, and the guide portion 32 is used to allow the end of the support tube 22 to smoothly abut against the groove bottom of the first annular groove 31 and / or the second annular groove 41. In this way, since the first annular groove 31 and the second annular groove 41 have the inclined guide portion 32, when the support tube 22 is clamped by the front locking mechanism 3 and the rear locking mechanism 4, the two ends of the support tube 22 can be conveniently and quickly clamped in the first annular groove 31 and the second annular groove 41 respectively. The middle part of the front locking mechanism 3 and the rear locking mechanism 4 is axially provided with a mounting hole 33, and the front locking mechanism 3 and the rear locking mechanism 4 are coaxially penetrated on the rotating shaft through the mounting hole 33. The front locking mechanism 3 and the rear locking mechanism 4 are replaced with a frame-type locking device. When the silk cake is about to be unwound, the yarn support plate 21 can also maintain a cylindrical shape and be stuck in the first annular groove 31 and the second annular groove 41, such as Figures 3 to 5 As shown, the rear locking mechanism 4 adopts a structure of the same size as the front locking mechanism 3. During injection molding, the front and rear ends of the front locking mechanism 3 and the rear locking mechanism 4 are usually hollowed out to reduce costs and reduce weight.

[0041] The middle of the front locking mechanism 3 and the rear locking mechanism 4 is provided with a mounting hole 33 along the axial direction, and the front locking mechanism 3 and the rear locking mechanism 4 are coaxially penetrated on the rotating shaft 5 through the mounting hole 33. A support plate 7 is sleeved on the rotating shaft 5, and the middle of the rotating shaft 5 extends radially to form a mounting portion, and the support plate 7 is slidably sleeved on the mounting portion of the rotating shaft 5. Compared with the non-mounting part of the rotating shaft 5, that is, the two sides of the mounting part on the rotating shaft 5, the cross-sectional diameter of the mounting part is larger than the cross-sectional diameter of the non-mounting part, so that it is convenient for the support plate 7 to be sleeved on the mounting part along the axial direction of the rotating shaft 5, and the support plate 7 is fastened and clamped by the mounting part. The support plate 7 has a certain width, that is, its outer surface can be used to contact the inner surface of the support tube 22 and form a better support for the support tube 22 to ensure the stability of the shape of the support tube 22 and the stability during rotation, and avoid deformation of the middle part of the support tube 22; specifically, the rotating shaft 5 is a stepped shaft, and the part where the cross-sectional size changes on the stepped shaft is set as a transition shoulder, and the transition shoulder is turned into an arc or chamfered.

[0042] Example 4

[0043] like Figure 6-Figure 8 As shown, the yarn holding device in this embodiment is applied to a winding machine, and the winding machine 1 includes the above-mentioned yarn holding device 2, the winding mechanism 11 includes a winding motor 111 and a handle 112; the guide roller mechanism 12 includes a tube 121 and a roller shaft 122 that holds the silk strip close to the tube 121; the controller panel 13 is used to control the start and stop of the winding mechanism 11, the unwinding mechanism 15 and the tension mechanism 14, and the calibration of the tension mechanism 14; the tension mechanism 14 includes a tension wheel motor 141 and a tension disk motor 142; the unwinding mechanism 15 includes an unwinding motor 151 and a rotating shaft 5 that is transmission-connected to the unwinding motor 151, and the front locking mechanism 3 and the rear locking mechanism 4 are installed on the rotating shaft 5. A yarn break sensor 16 is arranged between the winding mechanism 11 and the tension mechanism 14 to detect whether the yarn is broken. If the yarn is broken, the winding motor 111 will stop rotating; a re-clamping sensor 17 is arranged between the tension mechanism 14 and the unwinding mechanism 15 to detect whether the yarn is broken. If the yarn is broken, the unwinding motor 151 and the tension wheel and tension disk motor 142 will be controlled to stop rotating; the yarn break sensor 16 mainly monitors the working state of the yarn, while the re-clamping sensor 17 mainly monitors the position and tension of the yarn.

[0044] The side opposite to the front locking mechanism 3 and the rear locking mechanism 4 has a locking hole 34 coaxially arranged with the mounting hole 33, and the outer end of the rotating shaft 5 is installed with a movable locking member 6, and the movable locking member 6 is used to push the front locking mechanism 3 at the outer end close to the rear locking mechanism 4, so that the support tube 22 is clamped between the front locking mechanism 3 and the rear locking mechanism 4. The yarn supporting device 2 is installed on the unwinding motor 151 through the rotating shaft 5, and the front locking mechanism 3 and the rear locking mechanism 4 are installed on the rotating shaft 5 through the mounting hole 33. After the silk cake is put on the supporting tube 22, it is installed between the front locking mechanism 3 and the rear locking mechanism 4, and then the front locking mechanism 3 is pushed closer to the rear locking mechanism 4 by the locking member 6. The locking member 6 can be a movable locking head, and the position is fixed by threaded connection with the rotating shaft 5, wherein a spring is arranged between the locking hole 34 and the locking member 6, so that the front locking mechanism 3 and the rear locking mechanism 4 can complete the clamping and locking of the supporting tube 22.

[0045] The winding machine is driven by two independent motors, one is the winding motor 111, and the other is the active unwinding motor 151. The unwinding motor 151 is responsible for winding the silk strips into a certain regular bobbin, while the active unwinding motor 151 is responsible for unwinding the silk strips from the surface of the silk cake. After the operator peels the silk strips off the silk cake, it passes through a series of tensioning routes such as the return clamp sensor 17, the tension mechanism 14, the yarn break sensor 16, and the roller 122, and then winds it onto the paper tube 121. Then press the start control button, the unwinding motor 151 starts to drive the silk cake to rotate counterclockwise, and the silk strips unwind from the silk cake and reach the tube 121 through the tension part. The winding motor 111 drives the tube 121 to rotate clockwise, and then the wire guide makes a reciprocating motion, driving the silk strips to be tightly attached to the tube 121 and wound around the tube 121 in a certain regular pattern to form a tube. When the yarn break sensor 16 and the re-clamp sensor 17 sense that the yarn is broken, the winding motor 111 and the unwinding motor 151 will be controlled to stop automatically. After the stop, the operator needs to connect the tube 121 and restart it.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A yarn holding device suitable for a winding machine, the winding machine (1) comprising a winding mechanism (11), a guide roller mechanism (12), a controller panel (13), a tension mechanism (14) and an unwinding mechanism (15), wherein a continuous passage for unwinding a yarn into a bobbin is formed between the winding mechanism (11), the guide roller mechanism (12), the controller panel (13), the tension mechanism (14) and the unwinding mechanism (15), and wherein: The yarn support device (2) comprises a yarn support device (2), the yarn support device (2) being arranged on an unwinding mechanism (15), the yarn support device (2) comprising a rollable yarn support plate (21), a front locking mechanism (3) and a rear locking mechanism (4), the yarn support plate (21) being rolled to form a cylindrical support tube (22), the outer diameter of the support tube (22) being matched with the inner diameter of the inner circle of the yarn cake; The front locking mechanism (3) and the rear locking mechanism (4) are respectively arranged at two ends of the support tube (22); when the yarn support plate (21) is curled into the support tube (22), the front locking mechanism (3) and the rear locking mechanism (4) are used to clamp the support tube (22).

2. The yarn holding device suitable for a winding machine according to claim 1, characterized in that: The yarn support plate (21) is a rectangular yarn support plate, and the maximum diameter of the support tube (22) is greater than or equal to the maximum inner diameter of the inner circle of the yarn cake.

3. The yarn holding device suitable for a winding machine according to claim 2, characterized in that: The yarn support plate (21) is a yarn support plate made of a flexible material, and the four corners of the yarn support plate (21) have rounded corners.

4. The yarn holding device suitable for a winding machine according to claim 1, characterized in that: A first annular groove (31) is provided on one side of the front locking mechanism (3), a second annular groove (41) is provided on a side of the rear locking mechanism (4) opposite to the front locking mechanism (3), and two ends of the support tube (22) are respectively clamped in the first annular groove (31) and the second annular groove (41).

5. The yarn holding device suitable for a winding machine according to claim 4, characterized in that: The inner groove walls of the first annular groove (31) and the second annular groove (41) are both inclined to form a guide portion (32), and the guide portion (32) is used to allow the end of the support tube (22) to smoothly abut against the groove bottom of the first annular groove (31) and / or the second annular groove (41).

6. The yarn holding device suitable for a winding machine according to claim 5, characterized in that: The front locking mechanism (3) and the rear locking mechanism (4) are both provided with mounting holes (33) in the middle along the axial direction, and the front locking mechanism (3) and the rear locking mechanism (4) are coaxially penetrated on the rotating shaft (5) through the mounting holes (33).

7. The yarn holding device suitable for a winding machine according to claim 6, characterized in that: A support disk (7) is sleeved on the rotating shaft (5), a middle portion of the rotating shaft (5) extends radially to form a mounting portion, and the support disk (7) is slidably sleeved on the mounting portion of the rotating shaft (5).

8. The yarn holding device suitable for a winding machine according to claim 6, characterized in that: The front locking mechanism (3) and the rear locking mechanism (4) are provided with locking holes (34) coaxially arranged with the mounting hole (33) on the sides opposite to each other, and the outer side of the rotating shaft (5) is sleeved with a movable locking member (6) for limiting the position of the front locking mechanism (3) and the rear locking mechanism (4).

9. The yarn holding device suitable for a winding machine according to claim 8, characterized in that: The winding mechanism (11) comprises a winding motor (111) and a handle (112); the guide roller mechanism (12) comprises a tube (121) and a roller shaft (122) for holding the silk strip close to the tube (121); the controller panel (13) is used to control the start and stop of the winding mechanism (11), the unwinding mechanism (15) and the tension mechanism (14), as well as the calibration of the tension mechanism (14); the tension mechanism (14) comprises a tension wheel motor (141) and a tension disk motor (142); the unwinding mechanism (15) comprises an unwinding motor (151), the rotating shaft (5) is transmission-connected to the unwinding motor (151), and the front locking mechanism (3) and the rear locking mechanism (4) are mounted on the rotating shaft (5).

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