Triangular seat ring mounting structure for a circular knitting machine

Abstract

The utility model relates to a technical field of triangular seat ring is especially a kind of triangular seat ring mounting structure for big circle machine, including base disc, the upper end fixed mounting of base disc has the support ring, the lower end fixed mounting of support ring has fixed block, the both ends of support ring are all fixedly connected and are penetrated with rotating shaft, the outer ring of rotating shaft is equipped with first deep groove ball bearing, the lower end fixed connection of first deep groove ball bearing has connecting ring, rotates connecting ring to make its outer ring outer thread and fixed block inner thread close engagement, axial thrust produced by screw pair is transmitted to rotating shaft by first deep groove ball bearing, drives first gear to move upwards until with third gear completely disengaged engagement, at this time, screw self-locking characteristic will first gear be stably locked in non-engagement position, completely cut off transmission link, even if accidental touch rotating rod, since gear has disengaged, power cannot be transmitted to threaded rod, triangular seat ring will not produce unexpected lift.

Description

Technical Field

[0001] This utility model relates to the technical field of triangular bearing seats, and in particular to a triangular bearing seat mounting structure for large circular knitting machines. Background Technology

[0002] As a core piece of equipment in the modern weft knitting field, the circular knitting machine uses a cam set as its key load-bearing component. The cam set is arranged in a ring around the outside of the cylinder, with a cam seat mounted on top. The knitting cam is fixed on the cam seat. The drive mechanism drives the cylinder seat to rotate synchronously with the cylinder, causing the knitting needles to move along the preset track of the knitting cam, thereby completing the loop knitting action in the cylinder. When knitting different fabrics, the height of the cam set needs to be adjusted to adjust the height of the knitting cam.

[0003] Traditional circular knitting machines use a triangular seat ring that is adjusted for height via a chain and sprocket drive. Over time, the chain is prone to tension and wear, which can create transmission gaps. Furthermore, the transmission link is always in a meshed state. If the sprocket is accidentally adjusted, the triangular seat ring may rise or fall unexpectedly.

[0004] To address the aforementioned issues, a search revealed a patent with publication number CN222700542U disclosing a triangular seat mounting structure for a large circular knitting machine. The patent proposes "a structure consisting of a base plate, a support ring, a triangular seat, a lifting mechanism, an adjusting sprocket, and a chain. The support ring is mounted on the base plate. The lifting mechanism comprises multiple components, including a support column, a transmission sprocket, a needle roller bearing, and a fixing bolt. The support column has external threads, and the transmission sprocket meshes with the support column. The first smooth circular segment of the transmission sprocket rotatably passes through the mounting hole of the triangular seat via the needle roller bearing. Multiple transmission sprockets are connected via chain transmission. The fixing bolt passes through the fixing through hole of the support column and meshes with the thread of the support ring." Inside the hole, the support column is fixed to the support ring, and the adjusting sprocket is rotatably mounted on the triangular seat ring, meshing with the chain. This utility model's triangular seat ring mounting structure for large circular knitting machines allows for height adjustment. Rotating the adjusting sprocket drives the chain, which in turn drives the transmission sprocket of the lifting mechanism to rotate relative to the support column. This causes the transmission sprocket to rise or fall relative to the support column, and consequently, the triangular seat ring to rise or fall relative to the support ring, thus achieving height adjustment of the triangular seat ring. This prevents the triangular seat ring from deviating during lifting, making it convenient to use and improving work efficiency. Because the chain and sprocket transmission are always engaged, accidental activation of the adjusting sprocket could easily cause the triangular seat ring to rise or fall unexpectedly.

[0005] In light of this, in-depth research into the aforementioned issues led to the creation of this case. Utility Model Content

[0006] The purpose of this utility model is to provide a triangular seat mounting structure for large circular knitting machines, in order to solve the problem mentioned in the background art that the traditional triangular seat for large circular knitting machines is adjusted by chain and sprocket transmission. The chain is prone to transmission gap due to stretching and wear after long-term use, and the transmission link is always in a meshing state. If the sprocket is accidentally touched, the triangular seat may be raised or lowered unexpectedly.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a triangular seat ring mounting structure for a large circular knitting machine, comprising a base plate, a support ring fixedly mounted on the upper end of the base plate, a fixing block fixedly mounted on the lower end of the support ring, a rotating shaft fixedly connected to both ends of the support ring, a first deep groove ball bearing sleeved on the outer ring of the rotating shaft, a connecting ring fixedly connected to the lower end of the first deep groove ball bearing, a rotating rod fixedly mounted on both ends of the connecting ring, a limit rod provided at the lower end of the fixing block, a moving ring sleeved on the outer ring of the rotating shaft, a limit ring fixedly mounted on the upper end of the limit rod, a first gear fixedly mounted on the upper end of the rotating shaft, a second gear provided on the upper end of the support ring, a second deep groove ball bearing fixedly mounted on the upper end of the support ring, a third gear sleeved on the outer ring of the second deep groove ball bearing, a triangular seat ring on the upper end of the base plate, a connecting rod fixedly mounted on the lower end of the triangular seat ring, and a threaded rod fixedly mounted on the upper end of the second gear.

[0008] Preferably, the retaining ring and the rotating shaft form a rotating structure, and the rotating shaft and the first deep groove ball bearing form a rotating structure.

[0009] Preferably, the outer ring of the connecting ring is provided with an external thread, and the fixing block is threadedly connected to the connecting ring.

[0010] Preferably, the limiting rod is a hollow structure, and a sliding groove is provided on the inner side of the limiting rod, and the limiting rod is slidably connected to the moving ring.

[0011] Preferably, a spring is fitted around the outer ring of the rotating shaft, and the moving ring and the limiting ring are connected by the spring.

[0012] Preferably, the second gear is evenly distributed along the circumference of the support ring, and the second gear is meshed with the third gear.

[0013] Preferably, the connecting rod is configured as a hollow structure, and the inner sidewall of the connecting rod is provided with internal threads.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. A complete closed transmission chain is formed by the second gear evenly distributed along the circumference of the support ring and the third gear in the middle. The gears mesh tightly with rigid tooth surfaces, eliminating the elastic deformation and wear gaps of chain drives. This results in higher transmission accuracy and stronger stability. When a single rotating rod is rotated, the power is precisely transmitted to the first gear at its upper end via the rotating shaft. After the first gear meshes with the third gear, the rotational power input at a single point is synchronously transmitted to all the second gears that mesh with it. This drives the threaded rods at the upper end of each second gear to rotate synchronously. The threaded rods cooperate with the connecting rod at the lower end of the triangular seat ring. The torque is no longer limited to a local point, but is evenly distributed to the entire ring structure through gear meshing. This ensures that the force on each part of the triangular seat ring is completely balanced during the lifting and lowering process, avoiding problems such as insufficient synchronization and tilting deformation of the triangular seat ring caused by gaps in chain drives. 2. To address the issue of accidental contact during lifting, when there is no need to adjust the height of the triangular seat ring, the rotating connecting ring ensures that its outer thread tightly engages with the inner thread of the fixed block. The axial thrust generated by the threaded pair is transmitted to the rotating shaft through the first deep groove ball bearing, driving the first gear to move upward until it completely disengages from the third gear. At this point, the self-locking characteristic of the threaded connection stably locks the first gear in the non-engaged position, completely cutting off the transmission link. Even if the rotating rod is accidentally touched, since the gear has disengaged, the power cannot be transmitted to the threaded rod, and the triangular seat ring will not experience accidental lifting or lowering. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the interaction between the second gear and the threaded rod of this utility model; Figure 3 This is a schematic diagram of the mutual cooperation between the fixing block and the connecting ring of this utility model; Figure 4 This is a schematic diagram of the interaction between the limiting rod and the moving ring of this utility model.

[0016] In the diagram: 1. Base plate; 2. Support ring; 3. Fixing block; 4. Rotating shaft; 5. First deep groove ball bearing; 6. Connecting ring; 7. Rotating rod; 8. Limiting rod; 9. Moving ring; 10. Spring; 11. Limiting ring; 12. First gear; 13. Second gear; 14. Second deep groove ball bearing; 15. Third gear; 16. Triangular seat ring; 17. Connecting rod; 18. Threaded rod. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4 This utility model provides a technical solution: a triangular seat ring mounting structure for a large circular knitting machine, including a base plate 1, a support ring 2 fixedly mounted on the upper end of the base plate 1, a fixing block 3 fixedly mounted on the lower end of the support ring 2, a rotating shaft 4 fixedly connected to both ends of the support ring 2, a first deep groove ball bearing 5 sleeved on the outer ring of the rotating shaft 4, a connecting ring 6 fixedly connected to the lower end of the first deep groove ball bearing 5, a rotating rod 7 fixedly mounted to both ends of the connecting ring 6, a limit rod 8 provided at the lower end of the fixing block 3, and the rotating shaft... The outer ring of the 4 is fitted with a movable ring 9, the upper end of the limiting rod 8 is fixedly fitted with a limiting ring 11, the upper end of the rotating shaft 4 is fixedly fitted with a first gear 12, the upper end of the support ring 2 is provided with a second gear 13, the upper end of the support ring 2 is fixedly fitted with a second deep groove ball bearing 14, the outer ring of the second deep groove ball bearing 14 is fitted with a third gear 15, the upper end of the base plate 1 is provided with a triangular seat ring 16, the lower end of the triangular seat ring 16 is fixedly fitted with a connecting rod 17, and the upper end of the second gear 13 is fixedly fitted with a threaded rod 18.

[0019] Furthermore, the support ring 2 and the rotating shaft 4 form a rotating structure, and the rotating shaft 4 and the first deep groove ball bearing 5 form a rotating structure. By setting the first deep groove ball bearing 5, the rotational friction between the rotating shaft 4 and the connecting ring 6 is effectively reduced, and the axial thrust is smoothly transmitted to ensure the accuracy of the clutch action.

[0020] Furthermore, the outer ring of the connecting ring 6 is provided with an external thread, and the fixing block 3 is threadedly connected to the connecting ring 6. Through the setting of the connecting ring 6, it can generate axial thrust by threading with the fixing block 3, driving the first gear 12 and the third gear 15 to precisely disengage and lock the transmission link.

[0021] Furthermore, the limiting rod 8 is designed as a hollow structure, and a groove is provided on the inner side of the limiting rod 8. The limiting rod 8 is slidably connected to the moving ring 9. By setting the moving ring 9, the radial movement of the rotating shaft 4 and the triangular seat ring 16 can be strictly limited, ensuring that the lifting process always runs stably along the axial direction and avoiding deviation or tilting.

[0022] Furthermore, a spring 10 is fitted around the outer ring of the rotating shaft 4. The moving ring 9 and the limiting ring 11 are connected by the spring 10. With the setting of the spring 10, when the connecting ring 6 is rotated in the opposite direction to unlock, a stable elastic restoring force can be provided to assist the first gear 12 to quickly and accurately mesh with the third gear 15, ensuring efficient connection of the transmission link.

[0023] Furthermore, the second gear 13 is evenly distributed along the circumference of the support ring 2. The second gear 13 is meshed with the third gear 15. Through the setting of the third gear 15, the rotational power input from a single point is synchronously transmitted to each second gear 13 and the connected threaded rod 18, which completely avoids the problem of uneven power distribution caused by traditional local force application or chain transmission, and ensures that the lifting and lowering of each part of the triangular seat ring 16 is synchronous and the force is balanced.

[0024] Furthermore, the connecting rod 17 is designed as a hollow structure, and the inner wall of the connecting rod 17 is provided with internal threads. Through the design of the connecting rod 17, the rotational motion of the gear transmission is stably converted into the axial lifting displacement of the triangular seat ring 16, ensuring precise and controllable height adjustment. It can also be synchronously connected with multiple sets of threaded rods 18 evenly distributed along the circumference of the support ring 2, so that the force on each part of the triangular seat ring 16 is evenly transmitted, avoiding tilting or deformation of the annular thin-walled structure due to local force concentration.

[0025] Working principle: In the initial locked state, the connecting ring 6 is tightly engaged with the fixed block 3 through the outer thread of the outer ring. The axial thrust generated is transmitted to the rotating shaft 4 through the first deep groove ball bearing 5 sleeved on the outer ring of the rotating shaft 4, causing the first gear 12 at the upper end of the rotating shaft 4 to move upward, so that it completely disengages from the third gear 15, completely cutting off the transmission link. At the same time, the moving ring 9 on the outer ring of the rotating shaft 4 slides with the inner groove of the limiting rod 8. The limiting rod 8 is fixed to the lower end of the fixed block 3 and has a limiting ring 11 at the lower end. The spring 10 between the moving ring 9 and the limiting ring 11 is in a compressed state. When it is necessary to adjust the height of the triangular seat ring 16, the connecting ring 6 is rotated in the opposite direction to loosen the thread between it and the fixed block 3. The spring 10 releases its elastic restoring force to push the moving ring 9 downward, causing the rotating shaft 4 and the first gear 12 to move downward synchronously until the first gear 12 and the third gear 15 are precisely engaged. Through the rotation of the rotating shaft 4, the rotating shaft 4 and the first deep groove ball bearing 5 are engaged. The ball bearing 5 reduces rotational friction, making rotation smoother. When the first gear 12 rotates, it drives the third gear 15 to rotate. Since the second gear 13 is evenly distributed along the circumference of the support ring 2 and meshes with the third gear 15, it drives all the second gears 13 to rotate synchronously. The threaded rod 18 at the upper end of the second gear 13 rotates together with the second gear 13. The connecting rod 17, which is fixedly installed at the lower end of the triangular seat ring 16, is a hollow structure with internal threads on its inner side wall. It forms a precise threaded fit with the threaded rod 18, converting the rotational motion into axial displacement. The sliding fit between the moving ring 9 and the inner groove of the limiting rod 8 strictly limits the radial movement of the rotating shaft 4 and the triangular seat ring 16. When the triangular seat ring 16 reaches the preset height, the connecting ring 6 is rotated in the forward direction to lock it with the fixed block 3 again. The first gear 12 disengages from the third gear 15 and locks, thus fixing the height of the triangular seat ring 16 and preventing accidental lifting or lowering caused by accidentally touching the rotating rod 7.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A triangular seat mounting structure for a large circular knitting machine, comprising a base plate (1), characterized in that: A support ring (2) is fixedly installed at the upper end of the base plate (1), and a fixing block (3) is fixedly installed at the lower end of the support ring (2). A rotating shaft (4) is fixedly connected through both ends of the support ring (2). A first deep groove ball bearing (5) is sleeved on the outer ring of the rotating shaft (4). A connecting ring (6) is fixedly connected to the lower end of the first deep groove ball bearing (5). A rotating rod (7) is fixedly installed through both ends of the connecting ring (6). A limit rod (8) is provided at the lower end of the fixing block (3). A moving ring (9) is sleeved on the outer ring of the rotating shaft (4). The limit rod (8) is fixedly connected to the lower end of the base plate (1). A limiting ring (11) is fixedly installed at the upper end of the 8), a first gear (12) is fixedly installed at the upper end of the rotating shaft (4), a second gear (13) is provided at the upper end of the support ring (2), a second deep groove ball bearing (14) is fixedly installed at the upper end of the support ring (2), a third gear (15) is sleeved on the outer ring of the second deep groove ball bearing (14), a triangular seat ring (16) is provided at the upper end of the base plate (1), a connecting rod (17) is fixedly installed at the lower end of the triangular seat ring (16), and a threaded rod (18) is fixedly installed at the upper end of the second gear (13).

2. The triangular bearing mounting structure for a large circular knitting machine according to claim 1, characterized in that: The support ring (2) and the rotating shaft (4) form a rotating structure, and the rotating shaft (4) and the first deep groove ball bearing (5) form a rotating structure.

3. The triangular bearing mounting structure for a large circular knitting machine according to claim 1, characterized in that: The outer ring of the connecting ring (6) is provided with an external thread, and the fixing block (3) is threadedly connected to the connecting ring (6).

4. The triangular bearing mounting structure for a large circular knitting machine according to claim 1, characterized in that: The limiting rod (8) is a hollow structure, and a sliding groove is provided on the inner side of the limiting rod (8). The limiting rod (8) is slidably connected to the moving ring (9).

5. The triangular bearing mounting structure for a large circular knitting machine according to claim 1, characterized in that: The outer ring of the rotating shaft (4) is fitted with a spring (10), and the moving ring (9) and the limiting ring (11) are connected by the spring (10).

6. The triangular bearing mounting structure for a large circular knitting machine according to claim 1, characterized in that: The second gear (13) is distributed along the circumferential direction of the support ring (2), and the second gear (13) meshes with the third gear (15).

7. The triangular bearing mounting structure for a large circular knitting machine according to claim 1, characterized in that: The connecting rod (17) is a hollow structure, and the inner sidewall of the connecting rod (17) is provided with internal threads.

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