Pay-off anti-retreat locking device for stranding machine
By designing a combined structure of lock nut and lock sleeve, the problem of damage to the pay-off shaft caused by the rotation of the pin in the stranding machine was solved, and the pay-off shaft was stably fixed, thus improving the operational reliability and safety of the stranding machine.
Patent Information
- Application Number
- CN202520363407.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-03-04
AI Technical Summary
During the production process of the stranding machine, the ejector pin can easily rotate synchronously with the pay-off shaft, causing the ejector pin to be over-tightened or loosened, resulting in damage to the pay-off shaft or axial runout, which affects the stability and safety of the stranding machine.
A wire feeding anti-reverse locking device was designed, comprising a lock nut, a first locking structure, and a second locking structure. The first locking structure restricts the rotation of the lock nut, and the second locking structure restricts the axial movement of the lock nut. Combined with the cooperation of the lock sleeve, the annular groove, and the indexing pin, the lock nut is kept in its initial position, preventing axial runout and damage to the wire feeding shaft.
It effectively prevents the positional deviation and damage of the wire feeding shaft, improves the stability and safety of the stranding machine, simplifies the installation and disassembly process, and enhances the practicality and stability of the device.
Smart Images
Figure CN223842676U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stranding machine tools, and in particular to a wire feeding anti-reverse locking device for stranding machines. Background Technology
[0002] Stranding machines are generally used to produce copper and aluminum wire stranded conductors for use in various communication cables, power cables, and wrapped wire products. The equipment mainly includes a pay-off section, a traction section, and a take-up section. The pay-off section mainly includes a pay-off frame, an inner shaft, and a pay-off shaft. The pay-off shaft is a sleeve-shaped structure with steel or aluminum wire wound on its outer surface. The pay-off shaft is fitted onto the inner shaft. The boss at the bottom of the inner shaft and the pin at the top are connected by threads to hold the two ends of the pay-off shaft. The inner shaft is then installed on the wire frame. The steel or aluminum wire is paid off from the pay-off shaft under the pull of the traction wheel, and the pay-off shaft will rotate clockwise or counterclockwise.
[0003] During the production process, the ejector pin is prone to rotating synchronously with the pay-off shaft, resulting in either excessive tightening or loosening. Excessive tightening of the ejector pin will increase the squeezing force on the pay-off shaft, causing damage to the pay-off shaft. Conversely, loose ejector pin will cause axial movement of the pay-off shaft, making the wire stranding process unstable and hindering subsequent processing of the stranding machine.
[0004] The fixed ejector pin is also tightened clockwise, which puts a great pressure on the shaft during the production process. Long-term use will cause the shaft to break, resulting in equipment damage and personnel safety hazards. Utility Model Content
[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a wire feeding anti-reverse locking device for a stranding machine.
[0006] The present invention provides a wire feeding anti-reverse locking device for a stranding machine, comprising: an inner shaft, a boss at the bottom of the inner shaft, a wire feeding shaft fitted in the middle of the inner shaft, and the inner shaft having a first axis, wherein the extension direction of the first axis is a first direction;
[0007] The locking mechanism includes a lock nut mounted on the top of the inner shaft, the centerline of the lock nut coinciding with the first axis, the bottom end of the lock nut having a pressing end, the wire feeding shaft being located between the pressing end and the boss, the locking mechanism further including a first locking structure and a second locking structure, the first locking structure being used to restrict the lock nut from rotating about the first axis, and the second locking structure being used to restrict the lock nut from moving along the extension direction of the first axis.
[0008] According to the technical solution provided in the embodiments of this application, the top of the inner shaft is provided with a first external thread, the second lock structure includes a lock sleeve, the middle of the lock sleeve is provided with a first internal thread hole that is threadedly engaged with the first external thread, the bottom of the lock sleeve is provided with a main chamber, and the top of the lock nut is fitted with the top of the inner part of the main chamber.
[0009] According to the technical solution provided in the embodiments of this application, the first lock structure includes a sleeve hole in the middle of the lock nut, a keyway extending along a first direction is provided on the top of the inner shaft, and a connecting key body movable along the keyway is provided on the inner wall of the sleeve hole.
[0010] According to the technical solution provided in the embodiments of this application, the lock nut includes an abutment post, the bottom end of the abutment post is the pressing end, a plurality of extension blocks are evenly distributed around the top outer surface of the abutment post, the inner wall of the main cavity is provided with an annular groove, the annular groove divides the main cavity into a first cavity and a second cavity from bottom to top, a retaining spring is provided inside the annular groove, and each of the extension blocks is disposed in the second cavity, with its bottom end fitting against the retaining spring.
[0011] According to the technical solution provided in the embodiments of this application, a positioning groove is formed between adjacent extension blocks, and a second internal threaded hole is provided on the top of the locking sleeve. An indexing pin is threaded through the second internal threaded hole, and the bottom of the indexing pin is engaged in one of the positioning grooves.
[0012] According to the technical solution provided in the embodiments of this application, the indexing pin includes a pin body whose bottom is inserted into the positioning groove, the top outer surface of the pin body is provided with a second external thread that is adapted to the second internal thread hole, and the top of the pin body is provided with a screwing block.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This invention features a lock nut, a first lock structure, and a second lock structure. The first lock structure restricts the lock nut from rotating around a first axis, while the second lock structure restricts the lock nut from moving along the extension direction of the first axis. Compared to the prior art, which directly uses a pin and threaded connection, which can easily cause the pin to rotate, this invention ensures that the lock nut always maintains its initial position and does not shift, thus avoiding axial runout of the pay-off shaft or damage to the inner shaft.
[0015] Secondly, the lock nut restricts the rotation of the lock nut through the cooperation of the keyway and the connecting key body. In addition, a lock sleeve is set up to restrict the axial runout of the lock nut through the cooperation of the first external thread and the first internal thread hole. The structure is simple, the function is stable, and it is easy to install and disassemble, making it highly practical.
[0016] Furthermore, an annular groove and a retaining spring are provided inside the lock sleeve. The retaining spring restricts the position of the lock nut, ensuring that the lock nut and lock sleeve can be used together. After combination, it will not interfere with the axial movement of the lock nut, nor with the threaded fit of the rotating lock sleeve, thus improving the convenience of installation and the speed of disassembly, and making it highly practical.
[0017] Furthermore, by setting an indexing pin that penetrates the locking sleeve and inserts it into the positioning groove, the rotation of the locking sleeve can be effectively prevented. Although the lock nut only provides axial movement pressure to the locking sleeve, the locking sleeve may still rotate along the first external thread due to reasons such as stripping after long-term use. At this time, the cooperation of the extension block and the indexing pin can effectively prevent the rotation of the locking sleeve, fully ensuring the stability of the locking sleeve and preventing the axial movement of the pay-off shaft.
[0018] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description
[0019] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0020] Figure 1 A schematic diagram of a wire feeding anti-reverse locking device for a stranding machine provided in this application embodiment;
[0021] Figure 2 This is a partial cross-sectional view of a wire feeding anti-reverse locking device for a stranding machine provided in an embodiment of this application;
[0022] Figure 3 An exploded view of the locking mechanism in a wire feeding anti-reverse locking device for a stranding machine, provided in an embodiment of this application;
[0023] Figure 4 This is a cross-sectional structural diagram of a locking sleeve for a wire feeding anti-reverse locking device for a stranding machine, provided in an embodiment of this application.
[0024] The following are the labeling elements in the diagram: 1. Indexing pin; 11. Pin; 12. Second external thread; 13. Tightening block; 2. Locking sleeve; 21. Main chamber; 211. First cavity; 212. Second cavity; 22. Annular groove; 23. First internal thread hole; 24. Second internal thread hole; 3. Lock nut; 31. Abutment post; 32. Extension block; 33. Positioning groove; 34. Sleeve hole; 35. Connecting key; 4. Snap ring; 5. Inner shaft; 51. First external thread; 52. Boss; 53. Keyway. Detailed Implementation
[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.
[0026] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0027] Please refer to Figures 1-4 An embodiment of this utility model provides a wire-releasing anti-reverse locking device for a stranding machine, comprising:
[0028] The inner shaft 5 has a boss 52 at its bottom and a wire feeding shaft is fitted in the middle of the inner shaft 5. The inner shaft 5 has a first axis and the extension direction of the first axis is a first direction.
[0029] The locking mechanism includes a lock nut 3 mounted on the top of the inner shaft 5. The centerline of the lock nut 3 coincides with the first axis. The bottom end of the lock nut 3 has a pressing end, and the wire feeding shaft is located between the pressing end and the boss 52. The locking mechanism also includes a first locking structure and a second locking structure. The first locking structure is used to restrict the lock nut 3 from rotating about the first axis, and the second locking structure is used to restrict the lock nut 3 from moving along the extension direction of the first axis. The first direction is... Figure 1 The vertical direction in the middle;
[0030] like Figure 1 As shown, the first locking structure restricts the lock nut 3 from rotating around the first axis, and the second locking structure restricts the lock nut 3 from moving along the extension direction of the first axis. Compared with the prior art, which directly uses a pin and threaded connection, which is prone to causing the pin to rotate, the present invention ensures that the lock nut 3 always maintains the initial set position and will not have a positional deviation, thus avoiding the situation of axial runout of the pay-off shaft or damage to the inner shaft 5.
[0031] In some embodiments, the inner shaft 5 is provided with a first external thread 51 at the top, the second lock structure includes a lock sleeve 2, the lock sleeve 2 is provided with a first internal thread hole 23 in the middle of which is threadedly engaged with the first external thread 51, the lock sleeve 2 is provided with a main chamber 21 at the bottom, and the top of the lock nut 3 is fitted with the top of the inner end of the main chamber 21.
[0032] like Figure 2 and Figure 3 As shown, the locking sleeve 2 can be installed by the cooperation of the first external thread 51 and the first internal thread hole 23. The locking sleeve 2 presses the locking nut 3 downward, and the pressing end of the locking nut 3 presses the wire-laying shaft downward, thus achieving the initial fixation of the wire-laying shaft and preventing axial movement of the wire-laying shaft.
[0033] In some embodiments, the first lock structure includes a sleeve hole 34 located in the middle of the lock nut 3, a keyway 53 extending in a first direction is provided at the top of the inner shaft 5, and a connecting key 35 movable along the keyway 53 is provided on the inner wall of the sleeve hole 34.
[0034] like Figure 2 and Figure 3As shown, if the lock nut 3 is driven to rotate, the keyway 53 restricts the key body 35, thereby limiting the rotation of the lock nut 3. The operation and processing are simple and the practicality is strong.
[0035] In some embodiments, the lock nut 3 includes an abutment post 31, the bottom end of the abutment post 31 is a pressing end, and a plurality of extension blocks 32 are evenly distributed around the top outer surface of the abutment post 31. The inner wall of the main chamber 21 is provided with an annular groove 22, which divides the main chamber 21 from bottom to top into a first cavity 211 and a second cavity 212. A retaining spring 4 is provided inside the annular groove 22, and each extension block 32 is disposed in the second cavity 212, with its bottom end fitting against the retaining spring 4.
[0036] like Figure 2 , Figure 3 and Figure 4 As shown, by inserting the snap ring 4 into the annular groove 22 to restrict each extension block 32, the lock nut 3 and the lock sleeve 2 can be used together. During installation, the connecting key body 35 of the lock nut 3 moves downward along the keyway 53, and the user rotates the lock sleeve 2 in sync. With the cooperation of the first external thread 51 and the first internal thread hole 23, the lock sleeve 2 also rotates and moves downward, so that the two do not interfere with each other. The combined lock nut 3 and lock sleeve 2 improve the convenience of installation and the speed of disassembly, and are highly practical.
[0037] In some embodiments, a positioning groove 33 is formed between adjacent extension blocks 32, and a second internal threaded hole 24 is provided at the top of the locking sleeve 2. An indexing pin 1 is threaded through the second internal threaded hole 24, and the bottom of the indexing pin 1 is engaged in a positioning groove 33.
[0038] like Figure 2 , Figure 3 and Figure 4 As shown, although the lock nut 3 only provides axial extrusion force to the lock sleeve 2, the lock sleeve 2 may still rotate along the first external thread 51 due to reasons such as stripping after long-term use. At this time, the extension block 32 will restrict the indexing pin 1 inside the positioning groove 33, which can effectively prevent the rotation of the lock sleeve 2, fully ensure the stability of the lock sleeve 2, and prevent the axial movement of the pay-off shaft.
[0039] In some embodiments, the indexing pin 1 includes a pin body 11 whose bottom is inserted into a positioning groove 33, the top outer surface of the pin body 11 is provided with a second external thread 12 that is adapted to the second internal thread hole 24, and the top of the pin body 11 is provided with a screwing block 13.
[0040] like Figure 3 As shown, by providing a screwing block 13 on the main body 11 of the pin, the ease of installation of the indexing pin 1 is improved, avoiding the problem that the indexing pin 1 is inconvenient to rotate and install due to its small size.
[0041] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0042] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0043] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A wire feeding anti-reverse locking device for a stranding machine, characterized in that, include: The inner shaft (5) has a boss (52) at its bottom and a wire feeding shaft is fitted in the middle of the inner shaft (5). The inner shaft (5) has a first axis and the extension direction of the first axis is a first direction. The locking mechanism includes a lock nut (3) mounted on the top of the inner shaft (5), the center line of the lock nut (3) coincides with the first axis, the bottom end of the lock nut (3) has a pressing end, the wire feeding shaft is located between the pressing end and the boss (52), the locking mechanism also includes a first locking structure and a second locking structure, the first locking structure is used to restrict the lock nut (3) from rotating about the first axis, and the second locking structure is used to restrict the lock nut (3) from moving along the extension direction of the first axis.
2. The anti-reverse locking device for a stranding machine according to claim 1, characterized in that, The inner shaft (5) has a first external thread (51) at the top. The second lock structure includes a lock sleeve (2). The lock sleeve (2) has a first internal thread hole (23) in the middle that is threaded with the first external thread (51). The lock sleeve (2) has a main chamber (21) at the bottom. The top of the lock nut (3) fits against the top of the inside of the main chamber (21).
3. The anti-reverse locking device for a stranding machine according to claim 1, characterized in that, The first lock structure includes a sleeve hole (34) located in the middle of the lock nut (3), a keyway (53) extending in a first direction is provided on the top of the inner shaft (5), and a connecting key (35) movable along the keyway (53) is provided on the inner wall of the sleeve hole (34).
4. The anti-reverse locking device for a stranding machine according to claim 2, characterized in that, The lock nut (3) includes an abutment post (31), the bottom end of which is the pressing end. The top outer surface of the abutment post (31) is evenly distributed with several extension blocks (32). The inner wall of the main chamber (21) is provided with an annular groove (22). The annular groove (22) divides the main chamber (21) from bottom to top into a first cavity (211) and a second cavity (212). A retaining spring (4) is provided inside the annular groove (22). Each extension block (32) is located in the second cavity (212) and its bottom end is in contact with the retaining spring (4).
5. The anti-reverse locking device for a stranding machine according to claim 4, characterized in that, A positioning groove (33) is formed between adjacent extension blocks (32). The top of the locking sleeve (2) is provided with a second internal thread hole (24). An indexing pin (1) is threaded through the second internal thread hole (24). The bottom of the indexing pin (1) is inserted into one of the positioning grooves (33).
6. The anti-reverse locking device for a stranding machine according to claim 5, characterized in that, The indexing pin (1) includes a pin body (11) whose bottom is inserted into a positioning groove (33), the top outer surface of the pin body (11) is provided with a second external thread (12) that is adapted to the second internal thread hole (24), and the top of the pin body (11) is provided with a screwing block (13).