Transmission mechanism of knitting machine

Abstract

The utility model relates to the technical field of circular knitting machines, in particular to a transmission mechanism of a knitting machine, which comprises a top support frame and a motor, bearings I are respectively arranged at two ends of the top support frame in a penetrating manner, the joint positions of the bearings I and the top support frame are fixed through screws, and a shaft lever is arranged on the inner ring wall of each bearing I in an interference fit manner; the upper end of the shaft rod is fixedly sleeved with a first transmission gear, and middle supporting frames are fixed to the two sides of the lower end of the top supporting frame correspondingly. According to the scheme, the three-section linkage design of the top gear ring, the first transmission gear, the second transmission gear and the lathe bed gear ring is adopted, the top gear ring is driven by the motor to drive the shaft rod to rotate synchronously, finally, stable rotation of the lathe bed gear ring is achieved, transmission loads are effectively dispersed through multi-point meshing between the gears and a limiting structure of bottom balls and sliding blocks, and the transmission efficiency is improved. Single-point abrasion is reduced, it is ensured that the knitting machine can still keep low vibration and low noise during high-speed operation, and the long-term stable requirement of precise knitting operation is met.

Description

Technical Field

[0001] This utility model relates to the field of circular knitting machine technology, and in particular to a transmission mechanism for a knitting machine. Background Technology

[0002] A circular knitting machine is a type of machinery widely used in the textile industry, primarily for producing various knitted fabrics. Its working principle involves knitting through a series of cylinders and needles on a dial to create a continuous knitted fabric. The transmission structure of the circular knitting machine is its core component, directly affecting the machine's operating efficiency and product quality.

[0003] The transmission structure of a circular knitting machine is crucial for its normal operation. Traditional circular knitting machines typically use mechanical transmission, transmitting power to the needle cylinder and needle plate via gears and chains.

[0004] Currently, most double-sided mechanical needles in China use a transmission structure, while high needles use a dual transmission structure. However, the same problem arises: the same plane circle is difficult to adjust. Utility Model Content

[0005] The purpose of this utility model is to address the aforementioned shortcomings in the existing technology by proposing a transmission mechanism for a knitting machine.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a transmission mechanism for a knitting machine, including a top support frame and a motor. Bearings are respectively installed through both ends of the top support frame. The connection between the bearings and the top support frame is fixed by screws. A shaft is installed on the inner ring wall of the bearings with an interference fit. A transmission gear is fixedly sleeved on the upper end of the shaft.

[0008] The top support frame has a middle support frame fixed on both sides of its lower end. The shaft passes through the interior of the middle support frame. The bottom support frame is fixed at the lower end of the middle support frame. The base is fixed at the lower end of the bottom support frame. A second transmission gear is installed inside the bottom support frame. The surface of the shaft is fixedly sleeved with the second transmission gear. A second bearing is fixedly embedded inside the base. The lower end of the shaft is interference-fitted with the interior of the second bearing.

[0009] The two bottom support frames are rotatably equipped with bed gear rings, and the teeth of the bed gear rings are respectively meshed with the teeth of the transmission gears distributed on both sides.

[0010] A top gear ring is rotatably mounted on the upper end of the top support frame, and the teeth of the top gear ring mesh with the teeth of the transmission gears distributed on both sides.

[0011] In detail, the motor has an internal drive shaft, and the end of the drive shaft is fixed to a drive shaft by a coupling. The drive shaft and the center position of the top gear ring are fixed by a bracket.

[0012] In detail, a base is installed at the lower end of the base, and a bushing is fixedly embedded inside the base. The bushing is rotatably sleeved with the lower end of the shaft.

[0013] In detail, the surface of the bottom support frame is provided with a notch, and a slider is provided at the lower end of the bed gear ring. The slider is slidably fitted with the notch.

[0014] In detail, the bottom support frame is also provided with a ball groove inside, and a ball is provided inside the ball groove. The bottom of the bed gear ring is provided with an annular groove, and the ball is in rolling contact with the inside of the annular groove.

[0015] The design scheme proposed in this utility model has the following beneficial effects in application:

[0016] 1. This solution adopts a three-stage linkage design of top gear ring, transmission gear one, transmission gear two and bed gear ring. The top gear ring is driven by a motor to drive the shaft to rotate synchronously, and finally realizes the smooth rotation of the bed gear ring.

[0017] 2. As described in 1, the multi-point meshing between gears, combined with the bottom ball bearings and slider limiting structure, effectively disperses the transmission load, reduces single-point wear, and ensures that the knitting machine can maintain low vibration and low noise even when running at high speed, which is especially suitable for the long-term stable requirements of precision knitting operations. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram showing the position of the ball bearings in this utility model;

[0020] Figure 3 This is a schematic diagram of the meshing of the bed gear ring and the transmission gear of this utility model;

[0021] Figure 4 This is a schematic diagram showing the meshing of the top gear ring and the transmission gear of this utility model.

[0022] In the diagram: 1. Top support frame; 11. Bearing 1; 12. Shaft; 13. Transmission gear 1; 14. Middle support frame; 15. Bottom support frame; 17. Bearing 2; 18. Transmission gear 2; 19. Bed gear ring; 110. Top gear ring; 111. Motor; 112. Drive shaft; 1001. Notch; 1002. Slider; 1003. Ball groove; 1004. Ball; 1005. Annular groove; 2. Base; 21. Bushing. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figures 1-4 A transmission mechanism for a knitting machine includes a top support frame 1 and a motor 111. Bearings 11 are respectively installed through both ends of the top support frame 1. The connection between the bearings 11 and the top support frame 1 is fixed by screws. A shaft 12 is provided on the inner ring wall of the bearing 11 with an interference fit. A transmission gear 13 is fixedly sleeved on the upper end of the shaft 12.

[0025] A middle support frame 14 is fixed to both sides of the lower end of the top support frame 1. A shaft 12 is installed through the interior of the middle support frame 14. A bottom support frame 15 is fixed to the lower end of the middle support frame 14. A base 16 is fixed to the lower end of the bottom support frame 15. A transmission gear 18 is installed inside the bottom support frame 15. The surface of the shaft 12 is fixedly sleeved with the transmission gear 18. A bearing 17 is fixedly embedded inside the base 16. The lower end of the shaft 12 is interference-fitted with the interior of the bearing 17.

[0026] Two bottom support frames 15 are rotatably mounted with bed gear rings 19, and the teeth of the bed gear rings 19 are respectively meshed with the teeth of the transmission gears 18 distributed on both sides.

[0027] A top gear ring 110 is rotatably mounted on the upper end of the top support frame 1. The teeth of the top gear ring 110 are respectively meshed with the teeth of the transmission gears 13 distributed on both sides.

[0028] It should be further explained that the motor 111 has a drive shaft inside, and the end of the drive shaft is fixed to the drive shaft 112 by a coupling. The drive shaft 112 and the center position of the top gear ring 110 are fixed by a bracket. Driven by the motor 111, the drive shaft 112 can rotate, thereby driving the top gear ring 110 to rotate. Through the transmission effect of the first transmission gear 13, the shaft 12 can rotate, and the second transmission gear 18 can be linked at the same time, ultimately enabling the bed gear ring 19 to rotate, forming a three-stage transmission stable output effect.

[0029] It should be further noted that a base 2 is installed at the lower end of the base 16, and a bushing 21 is fixedly embedded inside the base 2. The bushing 21 is rotatably sleeved with the lower end of the shaft 12.

[0030] It should be further noted that the surface of the bottom support frame 15 is provided with a notch 1001, and the lower end of the bed gear ring 19 is provided with a slider 1002. The slider 1002 is slidably fitted with the notch 1001, which can ensure the stable rotation of the bed gear ring 19 based on the bottom support frame 15.

[0031] It should be further noted that the bottom support frame 15 is also provided with a ball groove 1003, and a ball bearing 1004 is provided inside the ball groove 1003. The bottom of the bed gear ring 19 is provided with an annular groove 1005. The ball bearing 1004 and the annular groove 1005 are in rolling contact, which can reduce the rotational friction loss of the bed gear ring 19 relative to the bottom support frame 15.

[0032] Working principle: The motor 111 serves as the power source, transmitting power through a three-stage gear meshing system. The motor shaft is connected to the drive shaft 112 via a coupling. The drive shaft is rigidly fixed to the top gear ring 110. When the motor starts, the top gear ring 110 rotates, its teeth meshing with the two transmission gears 13 on either side, causing the shaft 12 to rotate synchronously. Since the transmission gear 18 is fixed to the shaft 12, the power is further transmitted to the bed gear ring 19, forming a three-stage transmission chain: "top gear ring → transmission gear 1 → shaft → transmission gear 2 → bed gear ring". This design ensures the smooth operation of the large bed gear ring 19 by distributing the load and gradually reducing speed, while avoiding torque overload problems caused by single-point transmission. The top and bottom bearings 11 and 17, along with the bushing 21, jointly constrain the radial runout of the shaft 12, further enhancing the stability of the transmission and meeting the requirements of the circular knitting machine for uniform speed and low vibration.

[0033] As a core moving component, the rotational stability of the bed gear ring 19 relies on the special structural design of the bottom support frame 15. First, the slider 1002 at the lower end of the gear ring slides and engages with the notch 1001 of the support frame to form a radial limit, preventing the gear ring from shifting laterally during high-speed rotation. Second, the ball groove 1003 inside the bottom support frame 15 contains a ball 1004, which rolls and contacts the annular groove 1005 at the bottom of the gear ring, converting sliding friction into rolling friction and significantly reducing frictional resistance. This two-way support mechanism (slider limit + ball support) ensures the axial perpendicularity of the gear ring and reduces power loss. At the same time, the precise meshing of the transmission gear 18 and the bed gear ring 19 avoids the accumulation of backlash error, ensuring the synchronization of the needle bed movement of the circular knitting machine, thereby improving the uniformity of the fabric texture.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A transmission mechanism of a knitting machine comprising a top support frame (1) and a motor (111), characterized in that: The top support frame (1) has bearings (11) installed through both ends. The connection between bearings (11) and the top support frame (1) is fixed by screws. A shaft (12) is installed on the inner ring wall of bearings (11) with interference fit. A transmission gear (13) is fixedly sleeved on the upper end of the shaft (12). The top support frame (1) has a middle support frame (14) fixed on both sides of its lower end. The shaft (12) passes through the interior of the middle support frame (14). The bottom support frame (15) is fixed at the lower end of the middle support frame (14). The base (16) is fixed at the lower end of the bottom support frame (15). The transmission gear (18) is installed inside the bottom support frame (15). The surface of the shaft (12) is fixedly sleeved with the transmission gear (18). The bearing (17) is fixedly embedded inside the base (16). The lower end of the shaft (12) is interference-fitted with the interior of the bearing (17). The two bottom support frames (15) are rotatably equipped with bed gear rings (19), and the teeth of the bed gear rings (19) are respectively meshed with the teeth of the transmission gears (18) distributed on both sides. The top support frame (1) is rotatably mounted with a top gear ring (110), and the teeth of the top gear ring (110) mesh with the teeth of the transmission gears (13) distributed on both sides.

2. A drive mechanism for a knitting machine according to claim 1, characterised in that: The motor (111) has a drive shaft inside, and the end of the drive shaft is fixed to a drive shaft (112) by a coupling. The drive shaft (112) and the center position of the top gear ring (110) are fixed by a bracket.

3. A drive mechanism for a knitting machine according to claim 1, characterised in that: The base (16) is equipped with a base (2) at its lower end. A bushing (21) is fixedly embedded inside the base (2). The bushing (21) is rotatably sleeved with the lower end of the shaft (12).

4. A drive mechanism for a knitting machine according to claim 1, characterised in that: The bottom support frame (15) has a notch (1001) on its surface, and a slider (1002) is provided at the lower end of the bed gear ring (19). The slider (1002) and the notch (1001) are slidably fitted together.

5. A drive mechanism for a knitting machine according to claim 1, characterized in that: The bottom support frame (15) is also provided with a ball groove (1003) inside, and a ball (1004) is provided inside the ball groove (1003). The bottom of the bed gear ring (19) is provided with an annular groove (1005), and the ball (1004) is in rolling contact with the inside of the annular groove (1005).

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