Glass fiber precursor cake head finding ring and head finding equipment

Abstract

The utility model discloses a glass fiber protofilament cake head finding ring and a head finding device.The glass fiber protofilament cake head finding device comprises a spinning cake trolley and the glass fiber protofilament cake head finding ring, the spinning cake trolley is provided with a first connecting piece, a protofilament cake is installed on the spinning cake trolley, and the glass fiber protofilament cake head finding ring comprises a supporting ring, a second connecting piece and a flexible protective sleeve; the flexible protective sleeve is arranged on the periphery of the supporting ring in a sleeving mode, the second connecting piece is connected to the supporting ring, and the second connecting piece is rotatably connected to the first connecting piece so that the second connecting piece and the first connecting piece can be locked, or the second connecting piece can be disengaged from the first connecting piece. Therefore, the head finding ring can be conveniently mounted and dismounted, and the reliability of the head finding ring is improved. The method is widely applied to the technical field of glass fiber manufacturing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glass fiber manufacturing, in particular to a glass fiber strand cake head finding ring and a head finding device. BACKGROUND

[0002] The production process of alkali-free glass fiber is as follows: glass raw material preparation, batch melting, glass liquid drawing, winding, strand classification, strand head finding, strand conditioning, twisting, inspection, packaging, and product. The glass fiber cake taken from the strand classification process usually has unstable linear density of the surface yarn, and the thread is messy, so it is necessary to arrange and remove the uneven thread segments attached to the surface yarn, leaving only the unique strand thread of each yarn. This operation is called "head finding". During the strand head finding, the strand cake needs to be installed on the cake car, and an expander (i.e. head finding ring) with a diameter larger than the winding drum is installed at one end of the winding drum of the strand cake to lift the strand, so as to avoid the mutual friction between the glass strand and the edge of the winding drum during the removal of the surface yarn, which may cause single fiber breakage or even cut off the entire glass fiber yarn.

[0003] At present, the head finding ring is usually composed of a nylon disc and a steel frame, which is installed and fixed on the cake car by manual insertion, and is pulled out by manual external force when disassembled. In this way, the violent disassembly and assembly may cause damage to the structure of the head finding ring after repeated disassembly and assembly, such as causing the steel bar to be detached or deformed, affecting the installation and use of the head finding ring, or causing the nylon disc to wear and form burrs, which may easily scratch the yarn during head finding, resulting in unsuccessful yarn blowing. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides a glass fiber strand cake head finding ring and a head finding device, which can facilitate the installation and disassembly of the head finding ring and improve the reliability of the head finding ring.

[0005] The glass fiber strand cake head finding ring according to the first aspect of the present application is used for cooperation and installation with a cake car, the cake car is provided with a first connecting piece, a strand cake is installed on the cake car, and the glass fiber strand cake head finding ring comprises:

[0006] a support ring;

[0007] a second connecting piece connected to the support ring, the second connecting piece being rotatably connected to the first connecting piece, so that the second connecting piece is locked with the first connecting piece or the second connecting piece is separated from the first connecting piece;

[0008] a flexible protective sleeve sleeved on the outer periphery of the support ring.

[0009] According to the glass fiber filament cake head ring provided by the embodiment of the present application, at least the following beneficial effects are achieved: the second connecting member is rotatably connected to the first connecting member through the second connecting member, the second connecting member is fixed or separated from the first connecting member, the installation and disassembly of the head ring are realized, the installation and disassembly of the head ring are more convenient, the disassembly mode is more gentle, the head ring does not need to be forcibly disassembled, the head ring is protected, the reliability of the head ring is improved, the supporting ring is protected through the flexible protective sleeve sleeved on the outer periphery of the supporting ring, the influence of repeated disassembly on the head ring is reduced, the surface burrs on the outer periphery of the head ring are reduced, the position where the glass fiber filament (i.e., the yarn) contacts the head ring is kept smooth and soft, the reliability of the head ring is further improved, and the situation that the yarn is scratched and broken due to burrs on the head ring is avoided.

[0010] According to some embodiments of the present application, the first connecting member is snap-connected with the second connecting member.

[0011] According to some embodiments of the present application, the first connecting member is provided with a first hollow portion and a mounting hole communicating with the first hollow portion, the hole diameter of the mounting hole along a first direction is greater than the hole diameter of the mounting hole along a second direction, the first direction and the second direction are arranged at an angle, the second connecting member includes a fixed portion and a snap portion, one end of the fixed portion is connected to the supporting ring, the other end of the fixed portion is connected to the snap portion, the snap portion extends along the radial direction of the mounting hole, the length of the snap portion matches the hole diameter of the mounting hole along the first direction, the snap portion is movably passed through the mounting hole when the length direction of the snap portion is parallel to the first direction, and the snap portion is used to abut against the first connecting member when the length direction of the snap portion is staggered with the first direction.

[0012] According to some embodiments of the present application, the second connecting member further includes a connecting portion between and connected to the fixed portion and the snap portion, the size of the connecting portion is smaller than the minimum hole diameter of the mounting hole, the connecting portion is rotatably passed through the mounting hole, and the size of the fixed portion is greater than the maximum hole diameter of the mounting hole.

[0013] According to some embodiments of the present application, the filament cake includes a winding drum and a glass fiber filament yarn wound on the outer periphery of the winding drum, the winding drum is installed on the cake car, the winding drum is provided with a first through hole, the first connecting member is inserted into the first through hole, the fixed portion is inserted into the first through hole when the second connecting member is snap-connected with the first connecting member, and the flexible protective sleeve abuts against the winding drum.

[0014] According to some embodiments of the present application, one end of the snap portion away from the fixed portion is provided with a chamfer.

[0015] According to some embodiments of the present application, the support ring is spaced apart with a plurality of hollow parts, and the second connecting member is connected to the center of the support ring.

[0016] According to some embodiments of the present application, the flexible protective sleeve is detachably connected with the support ring.

[0017] According to some embodiments of the present application, the material of the flexible protective sleeve is any one of rubber, silica gel or polyurethane.

[0018] The glass fiber precursor cake finder ring according to the second aspect of the embodiments of the present application is used in a glass fiber precursor cake finder device, which comprises a cake car and the glass fiber precursor cake finder ring as described in the first aspect above, and the cake car is provided with a first connecting member, and the first connecting member is rotatably connected with the second connecting member, so that the second connecting member is locked with the first connecting member or is separated from the first connecting member.

[0019] The glass fiber precursor cake finder device according to the embodiments of the present application has at least the following beneficial effects: the installation and dismounting of the finder ring are facilitated, and the reliability of the finder ring is improved.

[0020] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0021] The present application will be further described below in conjunction with the drawings and embodiments, wherein:

[0022] Figure 1 A perspective view of the glass fiber precursor cake finder ring disclosed in the embodiments of the present application;

[0023] Figure 2 A front view of the glass fiber precursor cake finder ring disclosed in the embodiments of the present application;

[0024] Figure 3 A right view of the glass fiber precursor cake finder ring disclosed in the embodiments of the present application;

[0025] Figure 4 An assembly view of the glass fiber precursor cake finder ring and the cake car disclosed in the embodiments of the present application;

[0026] Figure 5 A partial sectional view of the glass fiber precursor cake finder ring and the cake car in an assembled state disclosed in the embodiments of the present application;

[0027] Figure 6 A Figure 5 An enlarged view of A in FIG. 6.

[0028] Reference signs:

[0029] 1, head ring; 11, support ring; 111, hollow part; 12, second connecting piece; 121, fixing part; 122, buckle part; 123, connecting part; 124, clamping part; 13, flexible protective sleeve;

[0030] 2, bobbin car; 21, first connecting piece; 211, first hollow part;

[0031] 3, raw bobbin; 31, winding drum; 311, first through hole; 32, yarn. DETAILED DESCRIPTION

[0032] The embodiments of the present application will be described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0033] In the description of the present application, it should be understood that if the orientation or positional relationship indicated by the terms "center", "middle", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, it is only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0034] In the description of the present application, if the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, within, etc. are understood as including the number. If it is described that the first, the second is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0035] In the description of the present application, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example: it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In the description of the present application, if the description of the terms "as an embodiment", "an embodiment", "some examples", "some embodiments", "illustrative embodiments", "example", "specific example", "some examples" and the like appears, it means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The embodiment of the present application discloses a glass fiber filament cake head ring, which can be applied to a glass fiber filament cake head device to realize the head of the original cake.

[0038] In order to facilitate the understanding of the structure of the glass fiber filament cake head ring and the head device, the glass fiber filament cake head ring and the head device will be further described below in combination with the embodiments and the drawings.

[0039] The technical solutions of the present application will be further described below in combination with the embodiments and the drawings. It should be noted that the following description is only exemplary and is not a specific limitation of the present application.

[0040] Please refer to Figures 1 to 4 The embodiment of the present application provides a glass fiber filament cake head device, which comprises a glass fiber filament cake head ring 1 and a cake car 2, the cake car 2 is provided with a first connecting piece 21, the original cake is installed on the cake car, the glass fiber filament cake head ring 1 comprises a supporting ring 11, a second connecting piece 12 and a flexible protective sleeve 13, the flexible protective sleeve 13 is sleeved on the outer periphery of the supporting ring 11, the second connecting piece 12 is connected to the supporting ring 11, the second connecting piece 12 is rotatably connected to the first connecting piece 21, so that the second connecting piece 12 is locked with the first connecting piece 21, or the second connecting piece 12 is separated from the first connecting piece 21.

[0041] The glass fiber filament cake head ring 1 and the head finding device of the embodiment of the application, by setting the second connecting piece 12 on the supporting ring 11, the second connecting piece 12 is rotatably connected to the first connecting piece 21, so that the second connecting piece 12 is fixed or separated from the first connecting piece 21, thereby realizing the installation and disassembly of the head ring 1, so that the installation and disassembly of the head ring 1 is more convenient, and the disassembly mode is more gentle, without violent disassembly, so as to facilitate the protection of the head ring 1, improve the reliability of the head ring 1, at the same time, by setting the flexible protective sleeve 13 on the outer periphery of the supporting ring 11, it is beneficial to protect the supporting ring 11, reduce the influence of repeated disassembly on the head ring 1, reduce the surface burrs on the outer periphery of the head ring 1, so as to facilitate to ensure that the position where the glass fiber filament (i.e. the yarn 32) contacts the head ring 1 remains smooth and soft, further improve the reliability of the head ring 1, and avoid the situation that the yarn 32 is scratched off due to the burrs of the head ring 1.

[0042] Please combine Figures 3 to 6 In some embodiments, the first connecting piece 21 and the second connecting piece 12 are snap connected. Thus, the connection of the head ring 1 and the cake car 2 can be more simple and convenient by rotating the second connecting piece 12 to lock or release the buckle, and at the same time, the connection of the head ring 1 and the cake car 2 is more stable and reliable.

[0043] Understandably, in other embodiments, the connection mode of the first connecting piece 21 and the second connecting piece 12 can be threaded connection, or the connection mode of the first connecting piece 21 and the second connecting piece 12 can also be clamping connection. For example, the first connecting piece 21 is provided with a slot hole, and the second connecting piece 12 adjusts the radial size by rotating and stretching, so that the second connecting piece 12 abuts against or leaves the inner wall of the slot hole of the first connecting piece 21.

[0044] Optionally, the first connecting piece 21 is provided with a first hollow part 211 and a mounting hole communicating with the first hollow part 211, the hole diameter of the mounting hole along the first direction is larger than the hole diameter of the mounting hole along the second direction, the first direction and the second direction are arranged at an angle, the second connecting piece 12 includes a fixed part 121 and a buckle part 122, one end of the fixed part 121 is connected to the supporting ring 11, the other end of the fixed part 121 is connected to the buckle part 122, the buckle part 122 extends along the radial direction of the mounting hole, the length of the buckle part 122 matches the hole diameter of the mounting hole along the first direction, when the buckle part 122 rotates to the length direction thereof being parallel to the first direction, the buckle part 122 movably passes through the mounting hole, when the buckle part 122 rotates to the length direction thereof being staggered with the first direction, the buckle part 122 is used to abut against the first connecting piece 21.

[0045] In this way, by rotating the second connecting piece 12, the direction of the buckle part 122 relative to the mounting hole is adjusted so that the buckle part 122 can pass through the mounting hole or cannot pass through the mounting hole, so as to switch the connection state of the first connecting piece 21 and the second connecting piece 12, thereby making the disassembly and assembly of the pilot ring 1 and the bobbin car 2 more convenient.

[0046] Optionally, the first direction is perpendicular to the second direction, and the shape of the buckle part 122 is rectangular. Thus, the second connecting piece 12 is rotated by 90° to adjust the activity state of the buckle part 122 relative to the mounting hole, so as to facilitate switching the locking and disengagement of the first connecting piece 21 and the second connecting piece 12.

[0047] It can be understood that in other embodiments, the included angle between the first direction and the second direction can also be an acute angle or an obtuse angle, and the shape of the buckle part 122 can also be an oval shape, or the buckle part 122 and the first connecting piece 21 can be mutually matched L-shaped plates.

[0048] Optionally, the end of the buckle part 122 away from the fixed part 121 is provided with a chamfer. Thus, it is beneficial to guide the buckle part 122 into the mounting hole and reduce the influence of position deviation on the installation of the pilot ring 1.

[0049] In some embodiments, the raw bobbin 3 includes a winding drum 31 and a glass fiber raw yarn 32 wound on the outer periphery of the winding drum 31, and the winding drum 31 is installed on the bobbin car 2. The winding drum 31 is provided with a first through hole 311, the first connecting piece 21 extends into the first through hole 311, and when the second connecting piece 12 is buckled with the first connecting piece 21, the fixed part 121 extends into the first through hole 311, and the flexible protective sleeve 13 abuts against the winding drum 31.

[0050] In this way, when the pilot ring 1 is installed on the bobbin car 2, the length direction of the buckle part 122 is staggered with the first direction, the buckle part 122 extends into the first hollow part 211 and abuts against the first connecting piece 21, and the flexible protective sleeve 13 abuts against the winding drum 31, thereby achieving fixed positioning of the pilot ring 1, ensuring the connection stability of the pilot ring 1 and the bobbin car 2 during the pilot process, and avoiding displacement of the pilot ring 1 relative to the bobbin car 2. In addition, by arranging the flexible protective sleeve 13 to abut against the winding drum 31, on the one hand, the glass fiber raw yarn 32 on the bobbin car 2 can be pulled out and blown through the smooth flexible protective sleeve 13 during the pilot process without directly contacting the supporting ring 11, which is beneficial to ensure the reliability of the yarn 32 and avoid the situation that the supporting ring 11 scratches the yarn 32, and on the other hand, the yarn 32 on the surface layer of the raw bobbin 3 can be lifted by the flexible protective sleeve 13, so that the surface layer yarn 32 is separated from the winding drum 31.

[0051] It should be noted that the flexible protective sleeve 13 is sleeved on the outer periphery of the support ring 11, and the yarn 32 of the original filament cake surface layer is actually lifted by the extrusion force of the support ring 11, and the softness of the flexible protective sleeve 13 cannot support the yarn 32.

[0052] In an alternative embodiment, the second connecting piece 12 further comprises a connecting portion 123, the connecting portion 123 is located between the fixing portion 121 and the buckle portion 122 and connected to the fixing portion 121 and the buckle portion 122, the size of the connecting portion 123 is smaller than the minimum diameter of the mounting hole, the connecting portion 123 is rotatably arranged in the mounting hole, and the size of the fixing portion 121 is greater than the maximum diameter of the mounting hole.

[0053] In this way, the fixing portion 121 can abut against the first connecting piece 21 during the process that the buckle portion 122 extends into the mounting hole, so as to limit the displacement of the second connecting piece 12, thereby positioning the installation of the pilot ring 1, facilitating the assembly of the pilot ring 1 and the filament cake vehicle 2, and also facilitating the control of the contact pressure between the flexible protective sleeve 13 and the winding drum 31, avoiding the case that the flexible protective sleeve 13 is damaged due to excessive extrusion of the flexible protective sleeve 13 and the winding drum 31.

[0054] In another alternative embodiment, the second connecting piece 12 does not need to be provided with the connecting portion 123, the size of the fixing portion 121 is smaller than the minimum diameter of the mounting hole, and the fixing portion 121 is movable in the mounting hole instead of the connecting portion 123, and the installation of the pilot ring 1 is limited by the flexible protective sleeve 13.

[0055] Optionally, the first connecting piece 21 is located at the center of the winding drum 31, and the fixing portion 121 of the second connecting piece 12 is connected to the center of the support ring 11, thereby facilitating the improvement of the installation stability of the pilot ring 1 and the uniformity of the stress of the flexible protective sleeve 13 and the winding drum 31.

[0056] It can be understood that in other embodiments, the winding drum 31 is provided with a first through hole 311, the first connecting piece 21 is a plurality of limiting protrusions protruding relative to the inner wall of the first through hole 311, the plurality of limiting protrusions are arranged in the circumferential direction of the first through hole 311, the buckle portion 122 is located between two adjacent limiting protrusions by rotating the second connecting piece 12, at this time, the buckle portion 122 can move relative to the first connecting piece 21, or the buckle portion 122 and the limiting protrusion abut each other in the axial direction of the first through hole 311 by rotating the second connecting piece 12, at this time, the buckle portion 122 and the first connecting piece 21 are buckled and connected.

[0057] Please refer again to Figures 1 to 3In some embodiments, the support ring 11 is provided with a plurality of hollow parts 111, and the fixing part 121 of the second connecting member 12 is connected to the center of the support ring 11. In this way, the weight of the support ring 11 can be reduced while ensuring the structural reliability of the head ring 1, so as to facilitate the installation of the head ring 1 and reduce the labor intensity of manual handling and installation of the head ring 1.

[0058] Optionally, the flexible protective sleeve 13 is detachably sleeved with the support ring 11. In this way, the flexible protective sleeve 13 can be replaced in time when the surface of the flexible protective sleeve 13 is worn, the structural reliability of the head ring 1 is improved, the flexible protective sleeve 13 is prevented from damaging the yarn 32, and the maintenance cost of the head ring 1 is reduced. When the second connecting member 12 or the flexible protective sleeve 13 needs to be replaced, only the corresponding part needs to be replaced, and the entire head ring 1 does not need to be scrapped. In addition, the flexible protective sleeve 13 is connected to the support ring 11 in a sleeved manner, which facilitates the replacement of the flexible protective sleeve 13 and simplifies the operation steps.

[0059] Optionally, the flexible protective sleeve 13 is made of any one of rubber, silicone, polyurethane (PU), polypropylene (PP), polyethylene (PE), etc. In this way, the flexible protective sleeve 13 has the performance of deforming under external force and returning to the original state, so as to facilitate adaptive deformation of the head ring 1 when the head ring 1 is impacted, and prevent the head ring 1 from being damaged by collision and abrasion. In this way, the surface of the flexible protective sleeve 13 remains smooth, and the risk of the yarn 32 being cut off due to the surface wear and burrs of the flexible protective sleeve 13 is reduced.

[0060] In some embodiments, the glass fiber filament cake head equipment further comprises a driving mechanism connected to the fixing part 121 of the second connecting member 12. The driving mechanism is used to drive the fixing part 121 to rotate, so as to drive the buckle part 122 to rotate relative to the mounting hole, thereby adjusting the connection state of the second connecting member 12 and the first connecting member 21.

[0061] In this way, the driving mechanism is used to drive the second connecting member 12 to rotate, which can reduce manual intervention and reduce the labor intensity of the operator.

[0062] Optionally, the driving mechanism comprises a rotary driving member and a pneumatic clamp. The second connecting member 12 further comprises a clamping part 124 connected to the fixing part 121 and penetrating the center of the support ring 11. The pneumatic clamp is controlled to open and close by a compressed gas supply device to clamp or release the clamping part 124. The rotary driving member is connected to the pneumatic clamp, and the pneumatic clamp is driven to rotate by the rotary driving member to drive the second connecting member 12 to rotate, thereby adjusting the connection state of the second connecting member 12 and the first connecting member 21.

[0063] It can be understood that, in other embodiments, the pneumatic clamp can be replaced by a threaded fastener, a magnetic member, or a buckle structure, etc.

[0064] Optionally, the rotary driving member can be a rotary motor or a gear transmission mechanism, etc., which can be specifically set according to actual needs, and is not limited here.

[0065] It can be understood that, in other embodiments, the second connecting member 12 can also be manually rotated, for example, the support ring 11 can be directly manually rotated by an operator, or the driving mechanism can also be a hand crank, which is manually rotated by the operator to drive the second connecting member 12 to rotate.

[0066] For the convenience of reading and understanding, the working process of the glass fiber precursor cake head finding device is simply illustrated as follows:

[0067] Please refer to Figures 4 to 6 During the head finding operation, first, the pneumatic clamp clamps the clamping portion 124, the head ring 1 is moved to the buckle portion 122 of the second connecting member 12 extending into the first hollow portion 211 of the first connecting member 21, the rotary driving member drives the pneumatic clamp to rotate, so as to drive the second connecting member 12 to rotate relative to the first connecting member 21, so that the second connecting member 12 is locked and connected to the first connecting member 21, at this time, the head ring 1 is fixed to the cake car 2, and the flexible protective sleeve 13 abuts against the winding drum 31. Then the precursor yarn 32 is pulled to the blowing drum, the blowing device is started, so that the yarn 32 of the precursor cake 3 rotates and comes out of the winding drum 31 around the flexible protective sleeve 13 of the head ring 1, and the yarn 32 continuously moves to the blowing drum under the action of compressed air. After the time when the yarn 32 is blown into the blowing drum reaches the set time, the yarn 32 is cut, and the head finding of the precursor cake is completed.

[0068] After the operation is completed, the pneumatic clamp clamps the clamping portion 124, the rotary driving member drives the pneumatic clamp to rotate, so as to drive the second connecting member 12 to rotate relative to the first connecting member 21, so as to release the locking connection between the second connecting member 12 and the first connecting member 21, so that the second connecting member 12 and the first connecting member 21 can be movably separated, then the head ring 1 is moved to the buckle portion 122 of the second connecting member 12, and the buckle portion 122 exits the first hollow portion 211 of the first connecting member 21, so that the head ring 1 is separated from the cake car 2.

[0069] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge range of ordinary skill in the art without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A glass fiber strand cake end ring characterized by, The fiber cake head ring is used in cooperation with a bobbin car, the bobbin car is provided with a first connecting piece, a raw fiber cake is installed on the bobbin car, and the fiber cake head ring comprises: a supporting ring; a second connecting piece connected to the supporting ring, the second connecting piece is rotatably connected to the first connecting piece, the second connecting piece is locked with the first connecting piece, or the second connecting piece is separated from the first connecting piece; a flexible protective sleeve sleeved on the outer periphery of the supporting ring.

2. The glass fiber strand cake nose ring of claim 1, wherein, The first connecting piece and the second connecting piece are snap connected.

3. The glass fiber strand cake nose ring of claim 2, wherein, The first connecting piece is provided with a first hollow part and a mounting hole communicating with the first hollow part, the hole diameter of the mounting hole along a first direction is greater than the hole diameter of the mounting hole along a second direction, the first direction and the second direction are arranged at an angle, the second connecting piece comprises a fixed part and a buckle part, one end of the fixed part is connected to the supporting ring, the other end of the fixed part is connected to the buckle part, the buckle part extends along the radial direction of the mounting hole, the length of the buckle part matches the hole diameter of the mounting hole along the first direction, and the buckle part is movably passed through the mounting hole when the length direction of the buckle part is parallel to the first direction, and the buckle part is used for abutting against the first connecting piece when the length direction of the buckle part is staggered with the first direction.

4. The glass fiber strand cake nose ring of claim 3, wherein, The second connecting piece further comprises a connecting part between and connected to the fixed part and the buckle part, the size of the connecting part is smaller than the minimum hole diameter of the mounting hole, the connecting part is rotatably passed through the mounting hole, and the size of the fixed part is greater than the maximum hole diameter of the mounting hole.

5. The glass fiber strand cake nose ring of claim 3, wherein, The raw fiber cake comprises a winding drum and a glass fiber raw yarn wound on the outer periphery of the winding drum, the winding drum is installed on the bobbin car, the winding drum is provided with a first through hole, the first connecting piece is inserted into the first through hole, the fixed part is inserted into the first through hole when the second connecting piece is snap connected with the first connecting piece, and the flexible protective sleeve abuts against the winding drum.

6. The glass fiber strand cake nose ring of claim 3, wherein, The end of the buckle part away from the fixed part is provided with a chamfer.

7. The glass fiber strand cake nose ring of any of claims 1-6, wherein, The supporting ring is provided with a plurality of hollow parts at intervals, and the second connecting piece is connected to the center of the supporting ring.

8. The glass fiber strand cake nose ring of any of claims 1-6, wherein, The flexible protective sleeve is detachably sleeved with the supporting ring.

9. The glass fiber strand cake nose ring of any of claims 1-6, wherein, The material of the flexible protective sleeve is any one of rubber, silica gel or polyurethane.

10. A glass fiber strand cake end finding apparatus characterized by, The fiber cake head ring is used in cooperation with a bobbin car, the bobbin car is provided with a first connecting piece, the first connecting piece is rotatably connected to the second connecting piece, the second connecting piece is locked with the first connecting piece, or the second connecting piece is separated from the first connecting piece.

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