Bobbin fixing device with expansion function
By using the combined structure of the front top sleeve, the rear top sleeve, the front expansion sleeve and the rear expansion sleeve in the yarn barrel fixing device, the problem of loosening of the yarn barrel and the rotary shaft is solved, and the stable fixation of the yarn barrel is achieved, ensuring the normal operation of the cable outer braiding equipment.
Patent Information
- Application Number
- CN202421825360.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The existing yarn barrel fixing equipment is prone to loosening between the yarn barrel and the rotating shaft, resulting in inability to rotate simultaneously, affecting the normal operation of the cable outer braiding equipment, and may even cause the yarn barrel to fall off.
The combination structure of the front top sleeve, the rear top sleeve, the front expansion sleeve, the rear expansion sleeve and the middle top sleeve is adopted. Through the tightening action of the nut, these kits are expanded to fix the inner ring of the yarn barrel to ensure that the yarn barrel rotates synchronously with the rotation shaft.
Effectively prevent the yarn barrel from slipping, ensure the stable and reliable operation of the cable outer braiding equipment, avoid the yarn barrel falling off, and improve the reliability of the yarn barrel fixing device.
Smart Images
Figure CN223133791U_ABST
Abstract
Description
Technical Field
[0001] The present utility model relates to the technical field of yarn bobbin fixing devices, in particular to a yarn bobbin fixing device with a tightening function. Background Art
[0002] In cable production and the like, it is often necessary to fix a yarn bobbin wound with yarn on the front side end of the rotating shaft of a yarn bobbin fixing device, so that the cable outer layer braiding equipment and the like can continuously use the yarn output by the yarn bobbin (such as using the yarn to braid an insulating protective sleeve for the cable outer layer). The general structure of the existing yarn bobbin fixing device includes a bearing seat, a rotating shaft, a driven pulley, a fixing nut, etc. The rear end of the rotating shaft is fixed in the inner ring of the bearing of the bearing seat, and the driven pulley is installed at the rear side. When in use, the inner ring of the yarn bobbin is sleeved on the front outer side of the rotating shaft, and then fixed by a nut. The motor drives the driven pulley, the rotating shaft and the yarn bobbin to rotate through the driving belt under the control of a PLC and the like via the driving pulley, and continuously outputs yarn for use by the cable outer layer braiding equipment and the like.
[0003] Although the existing yarn bobbin fixing device meets the actual fixing needs to a certain extent, its disadvantages are also obvious. Specifically, in order to sleeve the inner ring of the yarn bobbin on the outer side end of the rotating shaft, its inner diameter is larger than the outer diameter of the rotating shaft, and both of them have a smooth arc surface structure. When the outer diameter and weight of the yarn bobbin are relatively large, the relatively large centrifugal force generated by the rotation of the yarn bobbin easily causes looseness between its inner ring and the rotating shaft (that is, they cannot rotate synchronously). Further, since the inner ring of the yarn bobbin and the rotating shaft cannot rotate synchronously, the motor cannot drive the yarn bobbin to unwind at the required speed, which will have an adverse impact on the normal operation of the cable outer layer braiding equipment and the like (and even cause the yarn bobbin to fall off the rotating shaft). In summary, it is particularly necessary to provide a device that can effectively fix the yarn bobbin. Summary of the Utility Model
[0004] In order to overcome the disadvantages described in the background art due to the limited structure of the existing yarn bobbin fixing device, the present utility model provides a yarn bobbin fixing device with a tightening function that can effectively fix the yarn bobbin wound with yarn on the outer side end of the rotating shaft through the combined action of the front and rear top sleeves, the front and rear expansion sleeves, and the middle top sleeve, preventing the yarn bobbin from slipping after being fixed, and providing strong technical support for the stable and reliable operation of other equipment using the yarn on the yarn bobbin.
[0005] The technical solution adopted by the present utility model to solve its technical problems is:
[0006] A yarn bobbin fixing device with a tightening function comprises a bearing seat, a driven pulley, a rotating shaft, and a locking nut, characterized in that it also comprises a front top sleeve, a rear top sleeve, a front expansion sleeve, a rear expansion sleeve, and an intermediate top sleeve, the front and rear ends of the bearing seat are equipped with bearings, the rear end of the rotating shaft is installed in the inner ring of the bearing, the driven pulley is installed on the rear side of the rotating shaft, and the lower end of the bearing seat is an open structure; a limit plate is installed in the middle of the rotating shaft, the front top sleeve and the rear top sleeve have the same structure, the front expansion sleeve and the rear expansion sleeve have the same structure, and the annular distribution of the rear side of the front top sleeve is high at the front and low at the rear The annular distribution of the front side of the rear top sleeve is a front-low and rear-high inclined surface structure, the annular distribution of the rear end of the inner side of the front expansion sleeve and the rear expansion sleeve is a rear-high and front-low structure, and the annular distribution of the front end of the inner side of the front expansion sleeve and the rear expansion sleeve is a rear-low and front-high structure; the annular distribution of the rear end of the middle top sleeve is a rear-low and front-high structure, and the annular distribution of the front end of the middle top sleeve is a rear-high and front-low structure; the front end of the rotating shaft has an external thread, and the rear top sleeve, the rear expansion sleeve, the middle top sleeve, the front expansion sleeve, and the front top sleeve are slidably sleeved on the outer end of the rotating shaft from back to front, and the nut is threadedly installed at the front end of the rotating shaft.
[0007] Furthermore, a plurality of limiting pins are distributed in an annular manner on the front side end of the rear top sleeve.
[0008] Furthermore, the front top sleeve, rear top sleeve, front expansion sleeve, rear expansion sleeve and middle top sleeve have the same outer diameter, and the outer diameters of the front top sleeve, rear top sleeve, front expansion sleeve, rear expansion sleeve and middle top sleeve are smaller than the inner diameter of the inner ring of the yarn tube.
[0009] Furthermore, an expansion opening is transversely distributed through the front expansion sleeve and the rear expansion sleeve, and the outer diameter of the nut is larger than the outer diameter of the inner ring of the yarn tube.
[0010] Furthermore, the rear end of the front top sleeve is wedged with the front inner front side inclined surface of the front expansion sleeve, the front end of the rear top sleeve is wedged with the rear inner rear side inclined surface of the rear expansion sleeve, and the front and rear end inclined surfaces of the middle top sleeve are respectively wedged with the inner rear side of the front expansion sleeve and the inner front side of the rear expansion sleeve.
[0011] Furthermore, the front expansion sleeve and the rear expansion sleeve are elastic.
[0012] Furthermore, the contact and mating parts of the front top sleeve, rear top sleeve, front expansion sleeve, rear expansion sleeve and middle top sleeve are not limited to inclined structures, but can also be any structure that can enable the front top sleeve and the rear top sleeve to expand the front side of the front expansion sleeve and the rear side of the rear expansion sleeve respectively, and the middle top sleeve to expand the rear side of the front expansion sleeve and the front side of the rear expansion sleeve respectively.
[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: Before using the present invention, the inner ring of the yarn bobbin is movably sleeved on the outer sides of the front top sleeve, rear top sleeve, front expansion sleeve, rear expansion sleeve, and middle top sleeve, and then a wrench or the like is used to tighten the nut. The nut drives the rear side of the front top sleeve into the front end of the front expansion sleeve, the front side of the middle top sleeve into the rear end of the front expansion sleeve, the rear side of the middle top sleeve into the front end of the rear expansion sleeve, and the front side of the rear top sleeve into the rear end of the rear expansion sleeve. In this way, the outer diameters of the front expansion sleeve and the rear expansion sleeve will expand, tightly fixing the inner ring of the yarn bobbin and preventing the yarn bobbin from slipping after being fixed, providing strong technical support for the stable and reliable operation of other equipment using the yarn on the yarn bobbin. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The present invention will be further described below in conjunction with the drawings and embodiments.
[0015] Figure 1 It is a schematic three-dimensional structure diagram of the whole of the present invention.
[0016] Figure 2 It is a schematic plan structure diagram of the whole of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] Figure 1 、 2As shown in the figure, a yarn bobbin fixing device with a tightening function includes a bearing seat 1, a driven pulley 2, a rotating shaft 3, and a locking nut 4. It also has a front top sleeve 5, a rear top sleeve 6, a front expansion sleeve 7, a rear expansion sleeve 8, and an intermediate top sleeve 9. There are openings in the middle of the front and rear ends of the bearing seat 1, and a bearing 11 is tightly sleeved and installed in each opening. The rear end of the rotating shaft 3 is tightly sleeved and installed in the inner rings of the two bearings 11. The middle part of the driven pulley 2 is welded to the rear of the rotating shaft 3 and is located between the two bearings 11. The lower part of the middle of the bearing seat 1 is an open structure. The bearing seat 1 is installed at the upper end of a frame such as a cable outer layer braiding equipment. The driven pulley 2 and the driving pulley located at the front side of the motor rotating shaft at the lower end of the frame are rotationally connected by a transmission belt (the motor rotates the driven pulley 2, the rotating shaft 4, and the yarn bobbin 14 through the transmission belt under the control of a PLC, etc., continuously outputting yarn for use in a cable outer layer braiding equipment, etc.). A circular limiting plate 32 is welded to the rear side of the middle part of the rotating shaft. The front top sleeve 5 and the rear top sleeve 6 have the same structure. The front expansion sleeve 7 and the rear expansion sleeve 8 have the same structure. The rear side of the front top sleeve 5 is annularly distributed with a front-high and rear-low inclined surface structure 51. The front side of the rear top sleeve 6 is annularly distributed with a front-low and rear-high inclined surface structure 61. The inner rear end of the front expansion sleeve 7 and the rear expansion sleeve 8 is annularly distributed with a rear-high and front-low structure 12. The inner front end of the front expansion sleeve 7 and the rear expansion sleeve 8 is annularly distributed with a rear-low and front-high structure 13. The rear side end of the intermediate top sleeve 9 is annularly distributed with a rear-low and front-high structure 91, and the front side end of the intermediate top sleeve is annularly distributed with a rear-high and front-low structure 92. The front end of the rotating shaft 3 has an external thread. The rear top sleeve 6, the rear expansion sleeve 8, the intermediate top sleeve 9, the front expansion sleeve 7, and the front top sleeve 5 are slidably sleeved on the outer side end of the rotating shaft 2 from the rear to the front. The nut 4 is screwed onto the external thread at the front end of the rotating shaft and installed at the front end of the rotating shaft 3.
[0018] Figure 1 , 2As shown, a plurality of forward-projecting conical limit rods 31 are annularly distributed at the front end of the rear top sleeve 6 (for fixing and limiting the rear outer side of the inner ring of the yarn bobbin 15). The front top sleeve 5, rear top sleeve 6, front expansion sleeve 7, rear expansion sleeve 8, and intermediate top sleeve 9 have the same outer diameter, and the outer diameters of the front top sleeve 5, rear top sleeve 6, front expansion sleeve 7, rear expansion sleeve 8, and intermediate top sleeve 9 are smaller than the inner diameter of the inner ring of the yarn bobbin 14. A slotted opening 15 is transversely distributed through the front expansion sleeve 7 and rear expansion sleeve 8 (so that the front expansion sleeve 7 and rear expansion sleeve 8 can expand and have a larger outer diameter), and the outer diameter of the nut 4 is larger than the outer diameter of the inner ring of the yarn bobbin 15. The rear end surface of the front top sleeve 5 is wedge-shaped and engaged with the inner front inclined surface of the front expansion sleeve 7, the front end surface of the rear top sleeve 6 is wedge-shaped and engaged with the inner rear inclined surface of the rear expansion sleeve 8, and the front and rear end inclined surfaces of the intermediate top sleeve 9 are respectively wedge-shaped and engaged with the inner rear side of the front expansion sleeve 7 and the inner front side of the rear expansion sleeve 8. The front expansion sleeve 7 and rear expansion sleeve 8 are elastic, preferably made of a steel elastic ring, and a plurality of upward-projecting rectangular fixing blocks 16 are distributed on the surfaces of the front expansion sleeve 7 and rear expansion sleeve 8 (for closer fitting with the inner ring of the yarn bobbin). The contact and mating parts of the front top sleeve 5, rear top sleeve 6, front expansion sleeve 7, rear expansion sleeve 8, and intermediate top sleeve 9 are not limited to the inclined surface structure, but can also be any structure that enables the front top sleeve 5 and rear top sleeve 6 to respectively expand the front side of the front expansion sleeve 7 and the rear side of the rear expansion sleeve 8, and the intermediate top sleeve 9 to respectively expand the rear side of the front expansion sleeve 7 and the front side of the rear expansion sleeve 8.
[0019] Figure 1 、 2As shown in the figure, before the new type is used, the yarn bobbin 14 is movably sleeved on the outer sides of the front top sleeve 5, the rear top sleeve 6, the front expansion sleeve 7, the rear expansion sleeve 8, and the middle top sleeve 9 from front to back through the inner ring. Then, a wrench or the like is used to tighten the nut 4. The nut 4 drives the rear side of the front top sleeve 5 into the front end of the front expansion sleeve 7 (expanding the front side end of the front expansion sleeve 7), the front side end of the middle top sleeve 9 into the rear end of the front expansion sleeve 7 (expanding the rear side end of the front expansion sleeve 7), the rear side end of the middle top sleeve 9 into the front end of the rear expansion sleeve 8 (expanding the front side end of the rear expansion sleeve 8), and the front side of the rear top sleeve 6 into the rear end of the rear expansion sleeve 8 (expanding the rear side end of the rear expansion sleeve 8). Since the inclined surface at the rear side end of the front top sleeve 5 acts on the front inner inclined surface of the front expansion sleeve 7, the inclined surface at the front side end of the rear top sleeve 6 acts on the rear inner inclined surface of the rear expansion sleeve 8, and the inclined surfaces at the rear and front ends of the middle top sleeve 9 act on the front inner inclined surface of the rear expansion sleeve 8 and the rear inner inclined surface of the front expansion sleeve 7 respectively, and the front expansion sleeve 7 and the rear expansion sleeve 8 are elastic. In this way, the outer diameters of the front expansion sleeve 7 and the rear expansion sleeve 8 will expand (larger than the inner diameter of the inner ring of the yarn bobbin), tightly fixing the inner ring of the yarn bobbin 14, preventing the yarn bobbin 14 from slipping after being fixed, and providing strong technical support for the stable and reliable operation of other equipment using the yarn on the yarn bobbin. When the yarn bobbin needs to be removed later, loosen the nut 4. Since the front expansion sleeve 7 and the rear expansion sleeve 8 have an elastic return effect, and the front top sleeve 5, the rear top sleeve 6, the front expansion sleeve 7, the rear expansion sleeve 8, and the middle top sleeve 9 all have inclined surfaces that wedge with each other. In this way, the front top sleeve 5, the front expansion sleeve 7, the middle top sleeve 9, and the rear expansion sleeve 8 will move forward a certain distance in turn. The inner sides of the front expansion sleeve 7 and the rear expansion sleeve 8 will have a smaller outer diameter (smaller than the inner diameter of the inner ring of the yarn bobbin) due to the lack of expansion and jacking effect, and the staff can conveniently remove the yarn bobbin 14.
[0020] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is limited to the details of the above exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.
[0021] In addition, it should be understood that although this specification is described according to the embodiments, not all embodiments only contain an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A yarn bobbin fixing device with a swelling and fastening function, comprising a bearing seat, a driven pulley, a rotating shaft, and a locking nut, characterized in that, It also has a front top sleeve, a rear top sleeve, a front expansion sleeve, a rear expansion sleeve, and an intermediate top sleeve. The front and rear ends of the bearing seat are equipped with bearings, the rear end of the rotating shaft is installed in the inner ring of the bearing, the driven pulley is installed on the rear side of the rotating shaft, and the lower end of the bearing seat is an open structure; a limit plate is installed in the middle of the rotating shaft, the front top sleeve and the rear top sleeve have the same structure, the front expansion sleeve and the rear expansion sleeve have the same structure, the rear side of the front top sleeve is an annular distribution of a front high and rear low inclined surface structure, the front side of the rear top sleeve is an annular distribution of a front low and rear high inclined surface structure, the rear end of the front expansion sleeve and the rear expansion sleeve is an annular distribution of a rear high and front low structure, the front end of the front expansion sleeve and the rear expansion sleeve is an annular distribution of a rear low and front high structure; the rear end of the intermediate top sleeve is an annular distribution of a rear low and front high structure, and the front end of the intermediate top sleeve is an annular distribution of a rear high and front low structure; the front end of the rotating shaft has an external thread, the rear top sleeve, the rear expansion sleeve, the intermediate top sleeve, the front expansion sleeve, and the front top sleeve are slidably sleeved on the outer end of the rotating shaft from back to front, and the nut is threadedly installed at the front end of the rotating shaft.
2. The yarn bobbin fixing device with a swelling function according to claim 1, characterized in that A plurality of limiting pins are distributed in an annular manner on the front side end of the rear top sleeve.
3. The yarn bobbin fixing device with a swelling function according to claim 1, characterized in that The outer diameters of the front top sleeve, the rear top sleeve, the front expansion sleeve, the rear expansion sleeve and the middle top sleeve are consistent, and the outer diameters of the front top sleeve, the rear top sleeve, the front expansion sleeve, the rear expansion sleeve and the middle top sleeve are smaller than the inner diameter of the inner ring of the yarn tube.
4. A yarn bobbin fixing device with a swelling function according to claim 1, characterized in that, An expansion opening is horizontally distributed through the front expansion sleeve and the rear expansion sleeve, and the outer diameter of the nut is larger than the outer diameter of the inner ring of the yarn tube.
5. A yarn bobbin fixing device with a swelling function according to claim 1, characterized in that, The rear end of the front top sleeve is wedged with the front inner front side slope of the front expansion sleeve, the front end of the rear top sleeve is wedged with the rear inner rear side slope of the rear expansion sleeve, and the front and rear end slopes of the middle top sleeve are respectively wedged with the rear inner side of the front expansion sleeve and the front inner side of the rear expansion sleeve.
6. The yarn bobbin fixing device with a tightening function according to claim 1, characterized in that, The front expansion sleeve and the rear expansion sleeve are elastic.
7. The yarn bobbin fixing device with a tightening function according to claim 1, characterized in that, The contact and matching parts of the front top sleeve, the rear top sleeve, the front expansion sleeve, the rear expansion sleeve and the middle top sleeve are not limited to the inclined structure, but can also be any structure that can make the front top sleeve and the rear top sleeve expand the front side of the front expansion sleeve and the rear side of the rear expansion sleeve respectively, and the middle top sleeve expand the rear side of the front expansion sleeve and the front side of the rear expansion sleeve respectively.