Detachable tension self-adjusting cotton spinning lower quill

Abstract

The application discloses a detachable tension self-adjusting cotton spinning lower pin, which comprises a front structure and a side structure connected with each other; a mounting groove for accommodating an elastic assembly is arranged on the front end of the front structure along the length direction of the front structure; the elastic assembly comprises two groups of fixing tables which are detachably connected with the front end of the front structure, a workbench arranged between the two groups of fixing tables, and elastic structures respectively arranged on the sides close to the two groups of fixing tables; the side ends of the workbench are connected with the driving ends of the two groups of elastic structures respectively, so as to make linear motion along the front-back direction of the front structure. Through the above mode, the detachable elastic assembly is arranged on the front end of the front structure, so that the front structure and the apron form flexible contact, the tension between the two can be adjusted, the wear and fatigue caused by the impact on the apron are reduced, the service life of the apron is prolonged, and the relative sliding of the upper and lower aprons is reduced, so that the fiber sliver is stably conveyed to the speed change point.

Description

Technical Field

[0001] This invention relates to the technical field of hemp spinning traction equipment, and in particular to a detachable tension self-adjusting hemp spinning pin. Background Technology

[0002] In the textile industry, the drafting system, consisting of the bottom pin, top pin, apron, roller, roller, and cradle, is used to draft and control the roving sliver. With the support and synergistic effect of the bottom pin, the drafting system can draft and control the roving sliver, concentrating the acceleration points of the fibers to hold them and control their movement. Simultaneously, the bottom pin ensures relatively neat fiber alignment, laying the foundation for smooth twisting and yarn formation, making it a crucial component affecting yarn quality.

[0003] During the drafting process, the upper and lower pins, under the combined action of the apron and rollers, form a frictional boundary that controls the fiber. The range of this frictional boundary determines the distance at which the fiber is controlled. The longer the control distance, the smoother the fiber movement during drafting. Simultaneously, the acceleration point of the fiber in the main drafting zone will concentrate towards the nip, which is beneficial for the smooth progress of the entire drafting process. Therefore, enhancing the frictional boundary during drafting is an important method to improve yarn quality. Improving the shape design of the lower pin is one way to enhance the frictional boundary. Consequently, extensive research has been conducted on the lower pin. After long-term development and improvement, the current lower pin shape in long flax spinning is an irregular "U"-shaped pin (e.g., ...). Figure 5 (As shown).

[0004] This type of pin used in long linen spinning has an arc-shaped tip, creating rigid friction between the apron and the pin's tip. The tension between them cannot be adjusted, which is detrimental to subsequent traction operations. Furthermore, the rigid friction between the apron and the pin's tip not only continuously impacts the apron, accelerating its wear and reducing its lifespan, but also easily leads to relative slippage between the upper and lower aprons, hindering stable fiber sliver transport. Simultaneously, the relatively weak frictional interface formed by the upper pin, apron, and lower pin results in less control over the fibers, leading to uneven fiber alignment and a lack of concentrated acceleration points, ultimately affecting subsequent leveling and drafting processes.

[0005] Therefore, it is necessary to design a detachable tension self-adjusting hemp spinning bottom pin with a simple structure that can form elastic contact between the rubber ring and the front end of the bottom pin, increase the life of the rubber ring, form a stable frictional interface, and greatly improve the yarn forming effect. Summary of the Invention

[0006] To overcome the aforementioned problems, this invention provides a detachable tension-adjustable hemp spinning bottom pin. By setting a detachable elastic component at the front end of the front structure, a flexible contact is formed between the front structure and the apron. This allows for the adjustment of the tension between the two, reducing wear and fatigue caused by the impact of rigid friction on the apron, thus improving the apron's service life. It also reduces relative slippage between the upper and lower aprons, thereby stably conveying the fiber sliver to the speed change point. Furthermore, the elastic jaws formed by the elastic component provide a more stable frictional boundary for the elastic grip of the fiber, significantly improving yarn quality.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] A detachable tension-adjustable hemp spinning pin includes a front structure and a rear structure connected to each other. The front end of the front structure has a mounting groove along its length for accommodating an elastic component. The elastic component includes two sets of fixed platforms detachably connected to the front end of the front structure, a worktable disposed between the two sets of fixed platforms, and elastic structures disposed on adjacent sides of the two sets of fixed platforms. The two ends of the worktable are respectively connected to the drive ends of the two sets of elastic structures to perform linear reciprocating motion along the front-rear direction of the front structure.

[0009] Furthermore, the worktable is arranged along the length of the front structure and is hollow. Two sets of embedded shafts are respectively accommodated at both ends of the worktable. The ends of the two sets of embedded shafts away from the worktable are respectively connected to the two sets of elastic structures and are integrally formed with the elastic structures.

[0010] Furthermore, the length of the workbench is less than the distance between the two sets of fixed platforms, and a number of pins are equally spaced along the length of the workbench at one end near the front structure. The pins are integrally formed with the workbench, and the front end of the front structure is provided with a number of slots that respectively accommodate the pins.

[0011] Furthermore, the length of the workbench is 396mm, the cross-section of the inner peripheral wall of the workbench is a first arched structure with a diameter of 11mm for the arc portion and a length of 5.5mm for the rectangular portion; the cross-section of the outer peripheral wall of the workbench is a second arched structure with a diameter of 12mm for the arc portion and a length of 6mm for the rectangular portion.

[0012] Furthermore, the pin is configured in a first square shape, with a height of 1mm, a length of 5mm, and a thickness of 3mm. The straight-line distance between the top of the pin and the top of the inner peripheral wall of the worktable is 1mm.

[0013] Furthermore, the slot is adapted to the shape of the pin, with a depth of 3.1 mm, a height of 1.2 mm, and a width of 3.2 mm.

[0014] Furthermore, the two sets of fixing platforms are symmetrically arranged at the front end of the front structure and perpendicular to the front structure. The fixing platforms are arranged in a second square shape, with a length of 5mm, a width of 30mm, and a height of 22mm. The corners of the fixing platforms parallel to the length direction of the front structure are all provided with rounded corners with a radius of 5mm. The distance between the left or right end of the front structure and the nearest fixing platform is 10mm.

[0015] Furthermore, the front end of the front structure is respectively provided with a snap-fit ​​groove to accommodate two sets of the fixed platform. The snap-fit ​​groove includes an arc-shaped part and a rectangular part connected front and rear. The straight-line distance between the front and rear ends of the snap-fit ​​groove is 17mm, and its width is 3.2mm.

[0016] The upper and lower ends of the arc-shaped part are both arc-shaped structures with a radius of 250mm. The length of the rectangular part is 1.1mm. The straight-line distance between its upper end and the upper end of the fixed platform is 8.2mm, and the straight-line distance between its front end and the front end of the fixed platform is 13mm.

[0017] Furthermore, each of the two sets of fixed platforms is provided with a sliding groove on an adjacent side. The sliding groove is a three-dimensional structure with a width of 4mm and a length of 10mm. A compression spring is provided inside the sliding groove along its length. One end of the compression spring is connected to the inner end of the sliding groove, and the other end is connected to a connecting shaft accommodated at the outer end of the sliding groove.

[0018] Furthermore, the connecting shaft is configured in a square shape, which is adapted to the shape of the slide groove. The width of the connecting shaft is 4mm, the straight-line distance between its front end and the front end of the fixed table is 5mm, the straight-line distance between its bottom end and the bottom end of the fixed table is 2mm, the end of the connecting shaft near the worktable is coaxially connected to the embedded shaft, and the length of the part of the connecting shaft that is accommodated in the worktable is 9mm.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] The detachable tension-adjustable hemp spinning bottom pin of this invention, by setting a detachable elastic component at the front end of the front structure, creates a flexible contact between the front structure and the apron. This not only adjusts the tension between them, reducing wear and fatigue caused by the impact of rigid friction on the apron and improving its service life, but also reduces relative slippage between the upper and lower aprons, thereby stably feeding the fiber sliver to the speed change point. Furthermore, the elastic jaws formed by the elastic component provide a more stable frictional boundary for the elastic grip of the fiber, significantly improving yarn quality. Simultaneously, the detachable design of the elastic component facilitates the replacement and maintenance of vulnerable parts, enhancing the practicality of the device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the detachable tension self-adjusting hemp spinning bottom pin of the present invention;

[0022] Figure 2 This is a cross-sectional schematic diagram of the detachable tension self-adjusting hemp spinning pin of the present invention;

[0023] Figure 3 This is a side view schematic diagram of the detachable tension self-adjusting hemp spinning bottom pin of the present invention;

[0024] Figure 4 This is a perspective schematic diagram of the elastic structure of the detachable tension self-adjusting hemp spinning pin of the present invention.

[0025] Figure 5 This is a schematic diagram of the structure of the hemp spinning bottom pin in the existing technology;

[0026] The components in the attached diagram are labeled as follows: 10, front structure; 11, slot; 20, rear structure; 30, fixed platform; 40, worktable; 41, pin; 50, compression spring; 51, slide; 52, connecting shaft. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0029] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Example

[0031] like Figures 1 to 2 As shown, a detachable tension self-adjusting hemp spinning pin 100 includes a front structure 10 and a rear structure 20 connected to each other. The front structure 10 is arc-shaped, and the rear structure 20 is L-shaped. Compared with the traditional arc-shaped structure, the L-shaped structure can significantly increase the contact area between the apron and the rear end of the pin, expand the range of friction, and benefit subsequent yarn forming processes.

[0032] The front end of the front structure 10 has a mounting groove along its length for accommodating the elastic component. The mounting groove is located in the middle of the front structure 10 to facilitate subsequent installation of the elastic component. The mounting groove is formed by cutting inward from the middle portion of the front structure 10. The elastic component includes two sets of fixed platforms 30 detachably connected to the front end of the front structure 10, a worktable 40 disposed between the two sets of fixed platforms 30, and elastic structures respectively disposed on adjacent sides of the two sets of fixed platforms 30. The worktable 40 is detachably connected to the front structure 10, facilitating the replacement and maintenance of the elastic component and improving the practicality and flexibility of the device. Both ends of the worktable 40 are connected to the drive ends of the two sets of elastic structures, respectively, to move linearly along the front-rear direction of the front structure 10, thereby forming an elastic contact between the worktable 40 and the rubber ring. The position of the worktable 40 can be adaptively adjusted according to the magnitude of the contact pressure between the rubber ring and the front structure 10.

[0033] This configuration, with a detachable elastic component at the front end of the front structure 10, creates flexible contact between the front structure 10 and the apron. This adjusts the tension between them, reducing wear and fatigue caused by rigid friction impacting the apron and extending its lifespan. It also minimizes relative slippage between the upper and lower aprons, thus ensuring stable fiber sliver delivery to the speed change point. Furthermore, the elastic clamping action formed by the elastic component stabilizes the frictional force generated by the elastic gripping of the fiber, significantly improving yarn quality.

[0034] like Figures 1 to 3As shown, in some embodiments, the worktable 40 is arranged along the length of the front structure 10 and is hollow. The hollow structure of the worktable 40 reduces its weight and the workload on the elastic structures at both ends. Two sets of embedded shafts are respectively accommodated at each end of the worktable 40. The embedded shafts are adapted to the shape of the inner cavity of the worktable 40 for a tight connection. The ends of the two embedded shafts furthest from the worktable 40 are connected to two sets of elastic structures and are integrally formed with the elastic structures. This integral design facilitates disassembly and assembly, reducing assembly difficulty. The elastic structures can drive the embedded shafts to move back and forth along the front-rear direction of the front structure 10, thereby automatically adjusting the position of the worktable 40 according to the contact pressure between the rubber ring and the front structure 10.

[0035] like Figures 1 to 2 As shown, in some embodiments, the length of the workbench 40 is less than the distance between the two sets of fixed platforms 30, ensuring that the two ends of the workbench 40 do not contact the fixed platforms 30. A plurality of pins 41 are evenly spaced along the length of the workbench 40 near the front structure 10. Preferably, there are seven pins 41, arranged horizontally in the front-rear direction. The pins 41 are integrally formed with the workbench 40 for easy subsequent installation. The front end of the front structure 10 has several slots 11 corresponding to the pins 41, allowing the workbench 40 to be inserted into the front structure 10 for easy disassembly and replacement. This insertion method ensures the stability of the connection between the workbench 40 and the front structure 10 while facilitating the forward and backward movement of the workbench 40.

[0036] Specifically, the worktable 40 is 396 mm long. The inner periphery of the worktable 40 has a first arched cross-section, with an arc-shaped diameter of 11 mm and a rectangular section length of 5.5 mm. The outer periphery of the worktable 40 has a second arched cross-section, similar in shape to the first arched structure, but scaled up proportionally. The arc-shaped section of the second arched structure has a diameter of 12 mm, and its rectangular section length is 6 mm.

[0037] The pin 41 has a first square structure with a height of 1 mm, a length of 5 mm, and a thickness of 3 mm. The straight-line distance between the top of the pin 41 and the top of the inner peripheral wall of the worktable 40 is 1 mm. The slot 11 is adapted to the shape of the pin 41 and is horizontally arranged in the front-back direction to ensure that the pin 41 and the slot 11 can be quickly aligned and connected. The slot 11 has a depth of 3.1 mm, a height of 1.2 mm, and a width of 3.2 mm. The pin 41 and the slot 11 are interference-fitted to facilitate the sliding of the pin 41 back and forth within the slot 11.

[0038] like Figure 3 As shown, and see also Figure 1 In some embodiments, two sets of fixing platforms 30 are symmetrically arranged at the front end of the front structure 10 and perpendicular to the front structure 10. The fixing platforms 30 are arranged in a second square shape, with a length of 5mm, a width of 30mm, and a height of 22mm. The corners of the fixing platforms 30 parallel to the length direction of the front structure 10 are rounded with a radius of 5mm to ensure a smooth transition of the corners and prevent scratching of the apron or yarn. The distance between the left or right end of the front structure 10 and the nearest fixing platform 30 is 10mm, meaning the two sets of fixing platforms 30 are symmetrically arranged about the midpoint of the front structure 10.

[0039] like Figures 2 to 3 As shown, in some embodiments, the front end of the front structure 10 is respectively provided with a snap-fit ​​groove to accommodate two sets of fixing platforms 30, so as to realize the snap-fit ​​between the fixing platform 30 and the snap-fit ​​groove, which facilitates disassembly and assembly. The snap-fit ​​groove is provided along the direction of the lower pin, and its shape is the same as the shape of the front end of the lower pin. The snap-fit ​​groove includes an arc-shaped part and a rectangular part connected front and rear. The straight-line distance between the front and rear ends of the snap-fit ​​groove is 17mm, and its width is 3.2mm.

[0040] The upper and lower ends of the arc-shaped part are both arc-shaped structures with a radius of 250mm. The length of the rectangular part is 1.1mm, the straight-line distance between its upper end and the upper end of the fixed platform 30 is 8.2mm, and the straight-line distance between its front end and the front end of the fixed platform 30 is 13mm.

[0041] like Figure 4 As shown, in some embodiments, a slide groove 51 is provided on one side of each of the two sets of fixed platforms 30, with the end of the slide groove 51 near the worktable 40 being open. The slide groove 51 has a three-dimensional structure, with a width of 4mm and a length of 10mm. A compression spring 50 is provided inside the slide groove 51 along its length direction. One end of the compression spring 50 is connected to the inner end of the slide groove 51, and the other end is connected to a connecting shaft 52 housed at the outer end of the slide groove 51, so that the connecting shaft 52 can move back and forth through the compression spring 50, thereby driving the worktable 40 to move synchronously.

[0042] Specifically, the connecting shaft 52 has a square structure, and its shape is adapted to the shape of the slide groove 51 so that it can be precisely accommodated at the outer end of the slide groove 51, preventing the connecting shaft 52 from shifting and falling off during movement. The width of the connecting shaft 52 is 4mm, the straight-line distance between its front end and the front end of the fixed table 30 is 5mm, and the straight-line distance between its bottom end and the bottom end of the fixed table 30 is 2mm. The end of the connecting shaft 52 closest to the worktable 40 is coaxially connected to the embedded shaft, and the length of the part of it accommodated in the worktable 40 is 9mm, and the thickness of its encapsulation surface is 1mm.

[0043] With this configuration, the rubber ring is fitted onto the outer peripheral wall of the worktable 40. When the force exerted by the rubber ring on the worktable 40 is large, due to the elastic contact between the worktable 40 and the front structure 10, the rubber ring pushes the worktable 40 inward, while the compression spring 50 is compressed inward. When the force exerted by the rubber ring on the worktable 40 decreases, the compression spring 50 returns to its original position, thereby pushing the worktable 40 outward until the worktable 40 reaches a balanced state.

[0044] like Figure 4 As shown, and see also Figure 1 In some embodiments, the rear structure 20 includes a horizontal portion connected at one end to the front structure 10 and a vertical portion connected at one end to the other end of the horizontal portion. The vertical portion and the horizontal portion are arranged perpendicularly to each other, so that the rear structure 20 is arranged in an L-shape, thereby increasing the contact area between the rubber band and the rear structure 20.

[0045] The horizontal section is 23mm long, the vertical section is 10mm long, and both the vertical and horizontal sections are 3mm thick. Notably, the connection between the vertical and horizontal sections is an arc-shaped structure to ensure a smooth transition of the rubber band at the connection point. The radius of the arc-shaped structure is 2mm.

[0046] The above description is only used to illustrate the technical solutions of the present invention, and is not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Any equivalent structural or procedural transformations made using the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A detachable tension self-adjusting lower spindle for spinning cotton, comprising a front structure and a rear structure connected to each other; characterized in that, The front structure is arranged in an arc shape, and the rear structure is arranged in an L shape; The front end of the front structure is provided with a mounting groove along the length direction of the front structure for accommodating an elastic assembly, the elastic assembly comprises two groups of fixed tables which are detachably connected to the front end of the front structure, a workbench arranged between the two groups of fixed tables, and elastic structures respectively arranged on the proximal side of the two groups of fixed tables, and the two ends of the workbench are respectively connected to the drive ends of the two groups of elastic structures to move linearly along the front-rear direction of the front structure; The workbench is arranged along the length direction of the front structure and is arranged in a hollow structure, and the two ends of the workbench respectively correspond to accommodate two groups of embedded shafts, and the ends of the two groups of embedded shafts away from the workbench are respectively connected to the two groups of elastic structures and are arranged in an integral structure with the elastic structures; The proximal side of the two groups of fixed tables is provided with a sliding groove, the sliding groove is arranged in a third square structure, the sliding groove is provided with a compression spring along the length direction of the sliding groove, one end of the compression spring is connected to the inner end of the sliding groove, and the other end of the compression spring is connected to a connecting shaft accommodated in the outer end of the sliding groove; The connecting shaft is arranged in a fourth square structure, the shape of the connecting shaft is matched with the shape of the sliding groove, and the end of the connecting shaft close to the workbench is coaxially connected to the embedded shaft.

2. The detachable tension self-adjusting lower spindle for textile spinning as claimed in claim 1 wherein, The length of the workbench is less than the distance between the two groups of fixed tables, and a plurality of plugs are arranged at equal intervals along the length direction of the end of the workbench close to the front structure, the plurality of plugs are arranged in an integral structure with the workbench, and the front end of the front structure is provided with a plurality of plug-in grooves corresponding to the plurality of plugs.

3. The detachable tension self-adjusting lower spindle for textile spinning as claimed in claim 1 wherein, The length of the workbench is 396mm, the cross section of the inner circumferential wall of the workbench is arranged in a first circular arc structure, the diameter of the arc portion is 11mm, and the length of the rectangular portion is 5.5mm; the cross section of the outer circumferential wall of the workbench is arranged in a second circular arc structure, the diameter of the arc portion is 12mm, and the length of the rectangular portion is 6mm.

4. The detachable tension self-adjusting lower spindle for textile mill according to claim 2, wherein, The plug is arranged in a first square structure, the height of the plug is 1mm, the length of the plug is 5mm, and the thickness of the plug is 3mm, and the straight line distance between the top end of the plug and the top end of the inner circumferential wall of the workbench is 1mm.

5. The detachable tension self-adjusting spinning down pin according to claim 4, characterized in that, The plug-in groove is matched with the shape of the plug, the depth of the plug-in groove is 3.1mm, the height of the plug-in groove is 1.2mm, and the width of the plug-in groove is 3.2mm.

6. The detachable tension self-adjusting spinning down pin according to claim 5, characterized in that, The two groups of fixed tables are symmetrically arranged at the front end of the front structure and are perpendicular to the front structure, the fixed table is arranged in a second square structure, the length of the fixed table is 5mm, the width of the fixed table is 30mm, and the height of the fixed table is 22mm, the corner of the fixed table parallel to the length direction of the front structure is provided with a round corner, and the radius of the round corner is 5mm; the distance between the left end or right end of the front structure and the closest fixed table is 10mm.

7. The detachable tension self-adjusting spinning down pin as claimed in claim 6, wherein, The front end of the front structure is respectively provided with a clamping groove corresponding to the two groups of fixed tables, the clamping groove comprises an arc portion and a rectangular portion connected in front and back, the straight line distance between the front and back ends of the clamping groove is 17mm, and the width of the clamping groove is 3.2mm; The upper end and the lower end of the arc-shaped part are provided with arc-shaped structures, the radius of the arc-shaped structures is 250 mm, the length of the rectangular part is 1.1 mm, the straight-line distance between the upper end of the rectangular part and the upper end of the fixed table is 8.2 mm, and the straight-line distance between the front end of the rectangular part and the front end of the fixed table is 13 mm.

8. The detachable tension self-adjusting lower spindle for textile spinning as claimed in claim 1 wherein, The width of the sliding groove is 4 mm, and the length of the sliding groove is 10 mm.

9. The detachable tension self-adjusting spinning down pin as claimed in claim 8, wherein, The width of the connecting shaft is 4 mm, the straight-line distance between the front end of the connecting shaft and the front end of the fixed table is 5 mm, the straight-line distance between the bottom end of the connecting shaft and the bottom end of the fixed table is 2 mm, and the length of the part of the connecting shaft accommodated in the workbench is 9 mm.

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