A carbon fiber automatic winding machine with a single shaft and two spindles for yarn clamping and yarn breaking

Abstract

The present invention relates to the field of textile technology, and in particular to a single-axis double-spindle yarn clamping and yarn cutting device for a carbon fiber automatic winding machine, comprising: a winding drum shaft; a tensioning assembly comprising a first tensioning shaft and a second tensioning shaft; a force-applying assembly for driving the first tensioning shaft and the second tensioning shaft to synchronously tighten the drum; a yarn clamping assembly comprising two yarn clamping discs, and a yarn clamping drive for driving the two yarn clamping discs to synchronously clamp the yarn; a first drive for driving the first tensioning shaft and the second tensioning shaft for winding; a yarn cutting assembly for cutting the yarn in the yarn clamping discs; two connecting rod assemblies are provided between the two yarn clamping discs, the yarn clamping drive is connected to the connecting rod assembly to pull the two yarn clamping discs to loosen the yarn, and a spring is provided between the spacer and the yarn clamping disc to drive the two yarn clamping discs to clamp the yarn. The present invention synchronously winds up multi-layer yarn bundles through a single-axis double-spindle, and the force-applying assembly and the connecting rod assembly synchronously control the two tensioning shafts, thereby ensuring winding synchronization and improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the field of textile technology, in particular to a single-shaft double-spindle yarn clamping and yarn cutting device of an automatic carbon fiber winding machine. Background Art

[0002] When processing yarns like carbon fiber and glass fiber, the wound raw material must be unwound, guided, and spread. The spread yarn is then rewound back and forth onto a reel for the next processing step. However, existing reel-changing and winding machines can only accommodate one reel per reel. This makes it difficult to synchronize the winding of multiple yarn bundles, severely impacting winding efficiency. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a single-axis double-spindle yarn clamping and yarn breaking device for an automatic carbon fiber winding machine, which effectively solves the problems in the background technology.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: a single-axis double-spindle yarn clamping and yarn cutting device for a carbon fiber automatic winding machine, comprising:

[0005] Take-up drum shaft;

[0006] The tensioning assembly comprises a first tensioning shaft and a second tensioning shaft which are sequentially sleeved on the winding drum shaft along an axis;

[0007] A force-applying assembly, disposed at the front end of the winding drum shaft, for driving the first tensioning shaft and the second tensioning shaft to synchronously tension the winding drum;

[0008] The yarn clamping assembly comprises two yarn clamping discs respectively arranged at the end positions of the first tensioning shaft and the second tensioning shaft, and a yarn clamping driving member for driving the two yarn clamping discs to perform synchronous yarn clamping;

[0009] A first driving member is provided at the end of the winding drum shaft, and is used to drive the winding drum shaft to rotate, so as to drive the first tensioning shaft and the second tensioning shaft to rotate synchronously for winding;

[0010] A yarn cutting assembly, comprising a cutting head corresponding to the two yarn clamping discs, for cutting the yarn located in the yarn clamping discs after winding;

[0011] Among them, two connecting rod assemblies are provided between the two yarn clamping discs, and the two connecting rod assemblies are symmetrically arranged along the axis of the winding drum shaft. The yarn clamping drive is connected to the connecting rod assemblies to pull the two yarn clamping discs to loosen the yarn, and spacers are provided at the rear ends of the yarn clamping discs on the winding drum shaft, and a spring is provided between the spacer and the yarn clamping disc to drive the two yarn clamping discs to clamp the yarn.

[0012] Furthermore, the first tensioning shaft and the second tensioning shaft each include an end cap, a tensioning sleeve, a cartridge holder, a tensioning strip and a wedge block;

[0013] The tension sleeve is arranged at the front end of the reel, the drum frame is arranged at the end of the reel, the tension strips are located between the tension sleeve and the drum frame, and a plurality of tension strips are arranged along the circumferential direction of the tension sleeve;

[0014] The outer circumferential wall of the tension sleeve is provided with through grooves for the insertion of the plurality of tension strips, and the outer circumferential surface of the cylinder frame is provided with positioning grooves at positions corresponding to the tension strips;

[0015] The wedge block is coaxially arranged in the tension sleeve and is rotatably arranged on the force-applying component through a bearing;

[0016] The end cover is fixed to the front end of the tension sleeve through a locking hoop;

[0017] A toothed structure is provided on the outer side surface of the tensioning strip in contact with the reel, and a first inclined surface and a second inclined surface are provided on the inner side surface facing the tensioning sleeve to cooperate with the wedge block, and a protrusion is provided at one end of the tensioning strip located in the positioning groove, and an annular groove for accommodating the protrusion is provided at the end of the positioning groove;

[0018] When the wedge block contacts the first inclined surface, the multiple tensioning strips are embedded in the through groove. When the wedge block contacts the second inclined surface, the tooth-shaped structures of the multiple tensioning strips protrude from the tensioning sleeve and abut against the inner cylindrical surface of the reel, thereby achieving the positioning of the reel.

[0019] Furthermore, an elastic ring is sleeved on the middle cross-section of the plurality of tensioning strips, and a groove is opened on the tensioning strip, and the plurality of grooves form an arc-shaped space in the circumferential direction for installing the elastic ring.

[0020] Furthermore, the width of the annular groove is greater than the width of the protrusion, and an avoidance groove is provided on the step surface of the positioning groove corresponding to the position of the tensioning strip.

[0021] Furthermore, a linear elastic member is provided between the wedge block and the end cover;

[0022] The inner hole of the end cover extends inward away from one end of the tensioning strip to form a first step surface;

[0023] The wedge block is provided with a stepped shaft at one end of the end cover, the diameter of the stepped shaft is smaller than the inner hole diameter of the end cover, and the end step surface of the stepped shaft and the first step surface form a telescopic space for accommodating the linear elastic member.

[0024] Furthermore, a limiting step surface is provided between the first inclined surface and the second inclined surface.

[0025] Furthermore, the end of the tensioning strip located on the second inclined surface extends inward to form a pushing block;

[0026] The force applying assembly is provided with a slider, and the pushing block is provided with a third inclined surface facing the front end;

[0027] When the force-applying assembly pushes the tension sleeve to move axially, the slider moves synchronously and pushes up the tension bar through the third inclined surface until the tension sleeve switches from the first inclined surface to the second inclined surface position.

[0028] Furthermore, the force-applying assembly includes an intermediate connecting rod and a push rod;

[0029] The push rod is slidably arranged in the bearing group inside the tension sleeve;

[0030] The intermediate connecting rod is coaxially arranged in the inner hole of the winding drum shaft, and one end extending out of the inner hole is fixedly connected to the push rod, and a slider is arranged at the connecting end of the push rod;

[0031] The winding drum shaft is provided with a sliding groove at the extending end of the intermediate connecting rod, and a pin connected to the other slider is provided on the intermediate connecting rod;

[0032] The push rod drives the middle connecting rod to drive the two sliding blocks to move synchronously, so as to synchronously lift the tensioning strips at corresponding positions.

[0033] Furthermore, the connecting rod assembly includes a first connecting rod, a second connecting rod and a connecting sleeve;

[0034] The connecting sleeve is arranged between the first connecting rod and the second connecting rod, the end of the first connecting rod away from the connecting sleeve is fixed on the front yarn clamping disc, and the end of the second connecting rod away from the connecting sleeve is fixed on the rear yarn clamping disc.

[0035] Furthermore, a locking nut is provided at the end of the first connecting rod located on the connecting sleeve, and a gap is left between the locking nut and the connecting sleeve.

[0036] The beneficial effects of the present invention are as follows: the present invention can synchronously wind up multi-layer yarn bundles through the setting of one shaft and two spindles, and the setting of the force-applying component and the connecting rod component can realize synchronous control of the first tensioning shaft and the second tensioning shaft, effectively ensuring the synchronization of the two reels during winding, reducing processing waiting time, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 Schematic diagram of the structure of a one-shaft double-spindle yarn clamping and yarn breaking device in an embodiment of the present invention;

[0039] Figure 2 Schematic diagram of the installation of the first tensioning shaft and the second tensioning shaft on the winding drum shaft in an embodiment of the present invention;

[0040] Figure 3 This is a structural diagram of the first tensioning shaft and a partial enlarged view of location I in an embodiment of the present invention;

[0041] Figure 4 Schematic diagram of the installation of the tensioning strip and a partial enlarged view of position II in an embodiment of the present invention;

[0042] Figure 5 for Figure 4 A local enlarged view of point A;

[0043] Figure 6 A schematic structural diagram of a force-applying assembly and a connecting rod assembly and a partial enlarged view of position III in an embodiment of the present invention;

[0044] Figure 7 Schematic diagram of the reel linkage release state in an embodiment of the present invention;

[0045] Figure 8 for Figure 7 A partial enlarged view of point C;

[0046] Figure 9 for Figure 7 A partial enlarged view of point D;

[0047] Figure 10 Schematic diagram of the drum tensioning state and the yarn clamping waiting state in an embodiment of the present invention;

[0048] Figure 11 for Figure 10 A local enlarged view of point E;

[0049] Figure 12 for Figure 10 A partial enlarged view of point F.

[0050] 1. The first tensioning shaft; 2. The second tensioning shaft; 3. The first end cap; 4. The first step surface; 5. The first end cap; 6. The first end cap; 7. The first end cap; 8. The first end cap; 9. The first end cap; 10. The first end cap; 11. The first end cap; 12. The first end cap; 13. The first end cap; 14. The first end cap; 15. The first end cap; 16. The first end cap; 17. The first end cap; 18. The first end cap; 19. The first end cap; 20. The first end cap; 21. The first end cap; 22. The first tensioning shaft; 23. The first end cap; 24. The first end cap; 25. The first end cap; 26. The first end cap; 27. The first end cap; 28. The first end cap; 29. ​​The first end cap; 30. The first end cap; 31. The first end cap; 32. The first end cap; 33. The first end cap; 34. The first end cap; 35. The first end cap; 36. The first end cap; 37. The first end cap; 38. The first end cap; 39. The first end cap; 40. The first end cap; 41. The first end cap; 42. The first end cap; 43. The first end cap; 44. The first end cap; 45. The first end cap; 46. The first end cap; 47. The first end cap; 48. The first end cap; 49. The first end cap; 40. The first end cap; 41. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0052] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0054] like Figures 1 to 12The one-axis double-spindle yarn clamping and yarn breaking device of the carbon fiber automatic winding and rewinding machine shown comprises: a winding drum shaft 1, a tensioning assembly, a force-applying assembly 4, a yarn clamping assembly 5, a first driving member and a yarn cutting assembly 7. The tensioning assembly comprises a first tensioning shaft 2 and a second tensioning shaft 3 which are sequentially sleeved on the winding drum shaft 1 along the axis; the force-applying assembly 4 is arranged at the front end of the winding drum shaft 1, for driving the first tensioning shaft 2 and the second tensioning shaft 3 to synchronously tension the winding drum; the yarn clamping assembly 5 comprises two yarn clamping disks which are respectively arranged at the end positions of the first tensioning shaft 2 and the second tensioning shaft 3, and a yarn clamping driving member for driving the two yarn clamping disks to synchronously clamp the yarn; the first driving member is arranged at the end of the winding drum shaft 1, for driving the winding drum shaft 1 to rotate, so as to drive the first tensioning shaft 2 and the second tensioning shaft 3 to rotate synchronously for winding; the yarn cutting assembly 7 comprises a cutting head 71 arranged corresponding to the two yarn clamping disks, for cutting the yarn located in the yarn clamping disk after winding;

[0055] Among them, two connecting rod assemblies 8 are provided between the two yarn clamping discs, and the two connecting rod assemblies 8 are symmetrically arranged along the axis of the winding drum shaft 1. The yarn clamping drive is connected to the connecting rod assemblies 8 to pull the two yarn clamping discs to loosen the yarn. On the winding drum shaft 1, a spacer 9 is provided at the rear end of the yarn clamping disc, and a spring 10 is provided between the spacer 9 and the yarn clamping disc to drive the two yarn clamping discs to clamp the yarn. It should be noted that the front end of the winding drum shaft 1 refers to the end where the reel begins to enter the winding drum shaft 1. When the reels on the two tensioning shafts are installed, they all enter from the front end. The preferred implementation process of the present invention is to install the empty reel on the first tensioning shaft 2 and the second tensioning shaft 3 accordingly, and manually push the force-applying component 4 to make the first tensioning shaft 2 and the second tensioning shaft 3 synchronously tighten and position the empty reel, start the yarn clamping drive component, and the yarn clamping drive component (not shown in the figure) drives the two yarn clamping disks to open through the connecting rod component 8. After the yarn is placed on the yarn clamping disk, the yarn clamping disk moves in the opposite direction under the action of the spring 10 to clamp the yarn. At this time, the first drive component (not shown in the figure) synchronously drives the reels on the first tensioning shaft 2 and the second tensioning shaft 3 to reel. When the reeling is completed, the first drive component stops the driving action, the yarn cutting component 7 cuts the yarn, and the yarn clamping drive component pulls the two yarn clamping disks to loosen the yarn. At this time, the force-applying component 4 is pulled to release the tensioning action of the first tensioning shaft 2 and the second tensioning shaft 3, and the two reels after reeling are removed in turn. The present invention can synchronously reel in multi-layer yarn bundles through the setting of one shaft and two spindles, and the setting of the force-applying component 4 and the connecting rod component 8 can realize synchronous control, so as to effectively ensure the synchronization of the reeling of the two reels, reduce the processing waiting time, and improve production efficiency.

[0056] In a preferred embodiment of the present invention, the first tensioning shaft 2 and the second tensioning shaft 3 each include an end cap 21, a tensioning sleeve 22, a drum frame 23, a tensioning bar 24 and a wedge block 25; the tensioning sleeve 22 is arranged at the front end of the reel, the drum frame 23 is arranged at the end of the reel, the tensioning bar 24 is located between the tensioning sleeve 22 and the drum frame 23, and multiple tensioning bars 24 are arranged along the circumferential direction of the tensioning sleeve 22; the outer circumferential wall of the tensioning sleeve 22 is provided with a through groove 22a for embedding multiple tensioning bars 24, and a positioning groove 23a is provided on the outer circumferential surface of the drum frame 23 at a position corresponding to the tensioning bar 24; the wedge block 25 is coaxially arranged in the tensioning sleeve 22 and is rotatably arranged on the force-applying component 4 through a bearing; the end cap 21 is fixed to the front end of the tensioning sleeve 22 by a locking hoop;

[0057] A toothed structure 241 is provided on the outer side of the tensioning strip 24 that contacts the winding drum, and a first inclined surface 242 and a second inclined surface 243 that cooperate with the wedge block 25 are provided on the inner side of the tensioning sleeve 22. A protrusion 244 is provided at one end of the tensioning strip 24 located in the positioning groove 23a, and an annular groove is provided at the end of the positioning groove 23a to accommodate the protrusion 244.

[0058] Specifically, four tensioning strips 24 are provided along the circumferential direction, and are arranged opposite to each other in pairs. By applying force through the wedge block 25, uniform tensioning and positioning of the reel in the radial direction can be achieved to avoid local over-tightening or loosening. When the wedge block 25 contacts the first inclined surface 242, multiple tensioning strips 24 are embedded in the through groove 22a. Under the thrust of the wedge block 25, when the wedge block 25 contacts the second inclined surface 243, one end of the tensioning strip 24 located in the through groove 22a is pushed outward, and the other end swings with the protrusion 244 as the support point, so that the toothed structures 241 of the multiple tensioning strips 24 protrude from the tensioning sleeve 22 and contact the inner cylindrical surface of the reel, so that the toothed structure 241 tightens the inner wall of the reel, thereby achieving the reel. Positioning; in addition, an auxiliary supporting structure is provided in the circumferential direction of the drum frame 23 to support the rear end and thus the inside of the reel, thereby ensuring the installation accuracy of the reel on the tensioning shaft, effectively ensuring the positioning reliability of the reel, and improving the winding effect. Preferably, the auxiliary supporting structure can adopt an elastic steel ball structure, and a sliding cavity for sliding installation of the yarn clamping component 5 is provided on the drum frame 23. The yarn clamping component 5 slides in the sliding cavity to form a yarn clamping space, and a cover is provided between the first tensioning shaft 2 and the second tensioning shaft 3. One end of the cover is sleeved on the tensioning sleeve 22 of the second tensioning shaft 3, and the other end is sleeved on the yarn clamping component 5 at the rear end of the first tensioning shaft 2, which plays a guiding role and serves as a bridge for the first tensioning shaft 2 and the second tensioning shaft 3.

[0059] Since the reel needs to be detached from the tensioning shaft after winding is completed, the force-applying component 4 needs to push the tensioning sleeve 22 to move in the opposite direction so that the tensioning sleeve 22 releases the force on the tensioning strip 24, thereby causing the tensioning strip 24 to break away from contact with the reel. However, after the force is released, the tensioning strip 24 located above will retract into the through groove 22a, while the tensioning strip 24 below will be affected by gravity. The toothed structure 241 is difficult to ensure that it can be completely retracted into the through groove 22a, which will affect the installation of the reel when the reel is changed next time. Therefore, in order to ensure that the tensioning strip 24 can be smoothly reset, an elastic ring 11 is provided at the middle cross-section position of multiple tensioning strips 24, and a groove is opened on the tensioning strip 24. The multiple grooves form an arc-shaped space for installing the elastic ring 11 in the circumferential direction.

[0060] On the basis of the above scheme, in order to ensure that the tensioning strip 24 located at one end of the toothed structure 241 can be smoothly lifted up, the width of the annular groove is made greater than the width of the protrusion 244, and an avoidance groove is provided on the step surface of the positioning groove 23a corresponding to the position of the tensioning strip 24 to ensure that the tensioning strip 24 will not be blocked during the front end lifting process, thereby ensuring that the front end of the tensioning strip 24 has a sufficient swing angle during the lifting process.

[0061] In the present invention, when the reel is installed on the tensioning shaft, the axial thrust is manually applied to the thrust assembly, which causes the wedge block 25 to move axially and simultaneously lift the tensioning strip 24 to achieve tensioning of the reel. After the manual thrust is lost, in order to ensure that the wedge block 25 can still remain in the tensioned position, a linear elastic member 12 is provided between the wedge block 25 and the end cover 21. The inner hole of the end cover 21 extends inward away from one end of the tensioning strip 24 to form a first step surface 211. The wedge block 25 is located at one end of the end cover 21 and is provided with a step shaft 251. The diameter of the step shaft 251 is smaller than the diameter of the inner hole of the end cover 21. The end step surface of the step shaft 251 and the first step surface 211 form a telescopic space for accommodating the linear elastic member 12.

[0062] In a preferred embodiment of the present invention, there is a limiting step surface 247 between the first inclined surface 242 and the second inclined surface 243, which can keep the wedge block 25 in the position of the first inclined surface 242 when replacing the reel, ensuring that the reel is smoothly removed from the tensioning shaft, saving the time of replacing the reel and effectively ensuring production efficiency.

[0063] In order to ensure that the tensioning sleeve 22 can smoothly switch between the first inclined surface 242 and the second inclined surface 243, the tensioning strip 24 is located at the end of the second inclined surface 243 and extends inward to form a pushing block 248. A slider 41 is provided on the force-applying component 4, and a third inclined surface 249 is provided on the pushing block 248 facing the front end. When the force-applying component 4 pushes the tensioning sleeve 22 to move axially, the slider 41 moves synchronously and pushes up the tensioning strip 24 through the third inclined surface 249 until the tensioning sleeve 22 switches from the first inclined surface 242 to the second inclined surface 243.

[0064] Specifically, when multiple tensioning strips 24 are embedded in the through groove 22a, the axial projection range of the contour lines formed by the multiple third inclined surfaces 249 at the front end is larger than the axial projection range of the maximum outer contour edge of the slider 41, and the axial projection range of the contour edge formed at the rear end is smaller than the axial projection range of the maximum outer contour edge of the slider 41. In the process of the tensioning sleeve 22 pushing the slider 41 to slide gradually, the multiple tensioning strips 24 are lifted up until they move to the tensioning sleeve 22 and contact the second inclined surface 243. At this time, the tensioning sleeve 22 stops moving, and the toothed structure 241 on the outer side of the tensioning strip 24 tightens the reel.

[0065] In the preferred embodiment of the present invention, the force-applying assembly 4 includes an intermediate connecting rod 42 and a push rod 43; the intermediate connecting rod 42 is coaxially arranged with the push rod 43, and the push rod 43 is slidingly arranged in the bearing group inside the tensioning sleeve 22; the intermediate connecting rod 42 is coaxially arranged in the inner hole of the winding drum shaft 1, and one end extending out of the inner hole is fixedly connected to the push rod 43, and a slider 41 is arranged at the connecting end of the push rod 43; the winding drum shaft 1 is provided with a sliding groove at the extending end of the intermediate connecting rod 42, and a pin shaft connected to another slider 41 is provided on the intermediate connecting rod 42; the push rod 43 drives the intermediate connecting rod 42 to drive the two sliders 41 to move synchronously, so as to synchronously lift the tensioning strips 24 at the corresponding positions.

[0066] Specifically, through the combined design of the intermediate connecting rod 42, the push rod 43 and the slider 41, precise control of the lifting process of the tensioning strip 24 can be achieved, ensuring that the lifting position and force of each tensioning strip 24 are consistent, and the push rod 43 drives the intermediate connecting rod 42, and the tensioning strips 24 at the corresponding position are synchronously lifted through the slider 41, achieving tension positioning while ensuring the movement synchronization of multiple tensioning strips 24, thereby improving operational efficiency and accuracy.

[0067] In order to make the structure of the two tensioning shafts of the winding shaft more compact, the connecting rod assembly 8 is arranged in sections to avoid the internal structure. Specifically, the connecting rod assembly 8 includes a first connecting rod 81, a second connecting rod 82 and a connecting sleeve 83; the connecting sleeve 83 is arranged between the first connecting rod 81 and the second connecting rod 82, and the end of the first connecting rod 81 away from the connecting sleeve 83 is fixed on the yarn clamping disk at the front end, and the end of the second connecting rod 82 away from the connecting sleeve 83 is fixed on the yarn clamping disk at the rear end.

[0068] As a preferred embodiment of the above, due to the installation error when the yarn clamping disc is installed, it is difficult to ensure that the spacing between the two yarn clamping discs and the drum frame 23 is exactly the same in the clamping state, and there will be a phenomenon that after one yarn clamping disc is clamped in place, the yarn clamping distance of the other yarn clamping disc is insufficient. Therefore, a locking nut 811 is provided at the end of the first connecting rod 81 located on the connecting sleeve 83, and a gap is left between the locking nut 811 and the connecting sleeve 83. The first connecting rod is floatingly connected to the connecting sleeve 83. When the yarn clamping drive member pulls the second connecting rod to start the action, the reserved gap can delay the drive to the front yarn clamping disc. During the yarn clamping process, the yarn clamping drive member will stop driving. The first connecting rod and the second connecting rod are both driven and clamped by the reaction force of the spring 10. The first connecting rod will not be affected by the length of the second connecting rod due to the existence of the reserved gap and will not be incompletely clamped, thereby effectively ensuring the yarn clamping reliability of the two reels.

[0069] Those skilled in the art will appreciate that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A carbon fiber automatic winding machine with a single shaft and double spindles for yarn clamping and yarn cutting, characterized in that: include: Take-up drum shaft; The tensioning assembly comprises a first tensioning shaft and a second tensioning shaft which are sequentially sleeved on the winding drum shaft along an axis; A force-applying assembly, disposed at the front end of the winding drum shaft, for driving the first tensioning shaft and the second tensioning shaft to synchronously tension the winding drum; The yarn clamping assembly comprises two yarn clamping discs respectively arranged at the end positions of the first tensioning shaft and the second tensioning shaft, and a yarn clamping driving member for driving the two yarn clamping discs to perform synchronous yarn clamping; A first driving member is provided at the end of the winding drum shaft, and is used to drive the winding drum shaft to rotate, so as to drive the first tensioning shaft and the second tensioning shaft to rotate synchronously for winding; A yarn cutting assembly, comprising a cutting head corresponding to the two yarn clamping discs, for cutting the yarn located in the yarn clamping discs after winding; Wherein, two connecting rod assemblies are provided between the two yarn clamping discs, and the two connecting rod assemblies are symmetrically arranged along the axis of the winding drum shaft. The yarn clamping drive member is connected to the connecting rod assemblies to pull the two yarn clamping discs to loosen the yarn, and a spacer is provided on the winding drum shaft at the rear end of the yarn clamping disc, and a spring is provided between the spacer and the yarn clamping disc to drive the two yarn clamping discs to clamp the yarn; The first tensioning shaft and the second tensioning shaft each include an end cap, a tensioning sleeve, a cartridge holder, a tensioning strip and a wedge block; The tension sleeve is arranged at the front end of the reel, the drum frame is arranged at the end of the reel, the tension strips are located between the tension sleeve and the drum frame, and a plurality of tension strips are arranged along the circumferential direction of the tension sleeve; The outer circumferential wall of the tension sleeve is provided with through grooves for the insertion of the plurality of tension strips, and the outer circumferential surface of the cylinder frame is provided with positioning grooves at positions corresponding to the tension strips; The wedge block is coaxially arranged in the tension sleeve and is rotatably arranged on the force-applying component through a bearing; The end cover is fixed to the front end of the tension sleeve through a locking hoop; A toothed structure is provided on the outer side surface of the tensioning strip in contact with the reel, and a first inclined surface and a second inclined surface are provided on the inner side surface facing the tensioning sleeve to cooperate with the wedge block, and a protrusion is provided at one end of the tensioning strip located in the positioning groove, and an annular groove for accommodating the protrusion is provided at the end of the positioning groove; A limiting step surface is provided between the first inclined surface and the second inclined surface; The end of the tensioning strip located on the second inclined surface extends inwardly to form a pushing block; The force applying assembly is provided with a slider, and the pushing block is provided with a third inclined surface facing the front end; When the force-applying assembly pushes the tension sleeve to move axially, the slider moves synchronously and pushes up the tension bar through the third inclined surface until the tension sleeve switches from the first inclined surface to the second inclined surface position.

2. The one-axis double-spindle yarn clamping and yarn cutting device of the carbon fiber automatic winding machine according to claim 1 is characterized in that: When the wedge block contacts the first inclined surface, the multiple tensioning strips are embedded in the through groove. When the wedge block contacts the second inclined surface, the tooth-shaped structures of the multiple tensioning strips protrude from the tensioning sleeve and abut against the inner cylindrical surface of the reel, thereby achieving the positioning of the reel.

3. The one-axis double-spindle yarn clamping and yarn cutting device of the carbon fiber automatic winding machine according to claim 1 is characterized in that: An elastic ring is sleeved on the middle cross-section position of the plurality of tensioning strips, and a groove is opened on the tensioning strip. The plurality of grooves form an arc-shaped space for installing the elastic ring in the circumferential direction.

4. The one-shaft double-spindle yarn clamping and yarn cutting device of the carbon fiber automatic winding machine according to claim 1 is characterized in that: The width of the annular groove is greater than the width of the protrusion, and an avoidance groove is provided on the step surface of the positioning groove at a position corresponding to the tensioning strip.

5. The one-shaft double-spindle yarn clamping and yarn cutting device of the carbon fiber automatic winding and rewinding machine according to claim 1 is characterized in that: A linear elastic member is provided between the wedge block and the end cover; The inner hole of the end cover extends inward away from one end of the tensioning strip to form a first step surface; The wedge block is provided with a stepped shaft at one end of the end cover, the diameter of the stepped shaft is smaller than the inner hole diameter of the end cover, and the end step surface of the stepped shaft and the first step surface form a telescopic space for accommodating the linear elastic member.

6. The one-shaft double-spindle yarn clamping and yarn cutting device of the carbon fiber automatic winding machine according to claim 1 is characterized in that: The force-applying assembly includes an intermediate connecting rod and a push rod; The push rod is slidably arranged in the bearing group inside the tension sleeve; The intermediate connecting rod is coaxially arranged in the inner hole of the winding drum shaft, and one end extending out of the inner hole is fixedly connected to the push rod, and a slider is arranged at the connecting end of the push rod; The winding drum shaft is provided with a sliding groove at the extending end of the intermediate connecting rod, and a pin connected to the other slider is provided on the intermediate connecting rod; The push rod drives the middle connecting rod to drive the two sliding blocks to move synchronously, so as to synchronously lift the tensioning strips at corresponding positions.

7. The one-shaft double-spindle yarn clamping and yarn cutting device of the carbon fiber automatic winding and rewinding machine according to claim 1 is characterized in that: The connecting rod assembly includes a first connecting rod, a second connecting rod and a connecting sleeve; The connecting sleeve is arranged between the first connecting rod and the second connecting rod, the end of the first connecting rod away from the connecting sleeve is fixed on the front yarn clamping disc, and the end of the second connecting rod away from the connecting sleeve is fixed on the rear yarn clamping disc.

8. The one-shaft double-spindle yarn clamping and yarn cutting device of the carbon fiber automatic winding and rewinding machine according to claim 7 is characterized in that: A locking nut is provided at the end of the first connecting rod located on the connecting sleeve, and a gap is left between the locking nut and the connecting sleeve.

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