A fabric take-up mechanism for a circular knitting machine

Abstract

This utility model relates to the field of circular knitting equipment, and in particular to a fabric take-up mechanism for a circular knitting machine. It mainly solves the problems of uneven take-up tension and poor operational stability of the fabric take-up mechanism in the prior art. It includes a frame, a transmission box, a drive motor, a first transmission shaft, a second transmission shaft, a first transmission assembly, a second transmission assembly, a first gear, a large disc gear, a fabric take-up assembly, and a mid-section dust removal assembly. The transmission box is mounted on the frame, and the first transmission shaft is rotatably mounted on the transmission box. The drive motor is connected to the first transmission shaft through the first transmission assembly. The second transmission shaft is rotatably mounted on the frame, and the first transmission shaft is connected to the second transmission shaft through the second transmission assembly. The first gear is located at the lower part of the second transmission shaft, and the large disc gear is rotatably mounted on the frame and meshes with the first gear. The fabric take-up assembly is located below the large disc gear, and the mid-section dust removal assembly is located between the large disc gear and the fabric take-up assembly.

Description

Technical Field

[0001] This utility model relates to the field of disc knitting equipment, and in particular to a fabric take-up mechanism for a disc knitting machine. Background Technology

[0002] As an important fabric production equipment in the modern textile industry, the performance of the take-up mechanism of the circular knitting machine directly affects the quality of the finished fabric and production efficiency. Traditional take-up mechanisms mainly use a single-axis drive structure in the transmission system. At high speeds, the transmission torque fluctuates significantly, resulting in uneven take-up tension. This can easily cause fabric stretching deformation or wrinkling. Furthermore, traditional adjustment components use a parallel linkage structure, which is prone to resonance at high speeds, seriously affecting the stability of the equipment. Utility Model Content

[0003] Therefore, in view of the above problems, this utility model provides a fabric take-up mechanism for a circular knitting machine, which mainly solves the problems of uneven take-up tension and poor operation stability of the fabric take-up mechanism in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A fabric take-up mechanism for a circular knitting machine includes a frame, a transmission box, a drive motor, a first transmission shaft, a second transmission shaft, a first transmission assembly, a second transmission assembly, a first gear, a large disc gear, a fabric take-up assembly, and a mid-section dust removal assembly. The transmission box is mounted on the frame, the first transmission shaft is rotatably mounted on the transmission box, the drive motor is connected to the first transmission shaft via the first transmission assembly, the second transmission shaft is rotatably mounted on the frame, the first transmission shaft is connected to the second transmission shaft via the second transmission assembly, the first gear is located at the lower part of the second transmission shaft, the large disc gear is rotatably mounted on the frame and meshes with the first gear, the fabric take-up assembly is located below the large disc gear, and the mid-section dust removal assembly is located between the large disc gear and the fabric take-up assembly.

[0006] The fabric take-up assembly includes a take-up frame, a support shaft, a bearing seat, a take-up roller, a take-up motor, a clamping roller, and two adjustment components. The take-up frame is rotatably mounted on the frame via the support shaft and the bearing seat. The take-up roller is rotatably mounted on the lower part of the take-up frame. The take-up motor is connected to the take-up roller. The clamping roller is rotatably mounted on the take-up frame and located above the take-up roller. The take-up frame is connected to a large disc gear via two adjustment components, and the two adjustment components are axially symmetrically distributed.

[0007] Furthermore, the adjustment assembly includes a first connecting rod, a second connecting rod, and a telescopic rod. The upper end of the first connecting rod is vertically mounted on the large disc gear. One end of the telescopic rod is hinged to the lower end of the first connecting rod. One end of the second connecting rod is hinged to the other end of the telescopic rod. The other end of the second connecting rod is hinged to the upper end of the winding frame.

[0008] Furthermore, the second connecting rod is distributed along the axial direction of the take-up roller.

[0009] Furthermore, the mid-section dust removal assembly includes a first support rod, a connecting seat, a second support rod, and two dust removal rollers. The connecting seat is rotatably mounted on the lower end of the first support rod via a bearing. The second support rod is mounted on the connecting seat and is distributed in the transverse direction. The two dust removal rollers are rotatably mounted on the transverse ends of the second support rod.

[0010] Furthermore, the second support rod includes a horizontal bar and diagonal bars disposed on both sides of the horizontal bar. The two dust removal rollers are respectively disposed on the free ends of the diagonal bars, and the angle between the central axis of the diagonal bars and the central axis of the horizontal bar is 120°.

[0011] By adopting the aforementioned technical solution, the beneficial effects of this utility model are as follows: The fabric take-up mechanism of this circular knitting machine, through a dual-drive shaft and gear meshing transmission system, effectively reduces the speed fluctuation rate to below 0.8% through the synergistic effect of the first and second drive shafts. Combined with the tooth profile correction design of the large disc gear, the transmission efficiency is improved. Furthermore, the adjustment component, through a three-dimensional hinge mechanism, realizes ±5° pitch adjustment and ±3mm axial fine adjustment of the take-up frame, which can compensate for the 0.1-0.5mm difference in fabric thickness in real time. It is particularly suitable for constant tension take-up of elastic fabrics, making the take-up tension balanced, thereby improving the stability of equipment operation. The integrated design of the mid-section dust removal component and the take-up component moves the dust removal operation position forward to the knitting and forming section. Combined with the negative pressure adsorption system, it can remove more than 90% of free fibers, reducing the risk of secondary fabric contamination compared to end-of-line dust removal. Attached Figure Description

[0012] Figure 1 This is a cross-sectional structural schematic diagram of an embodiment of the present utility model;

[0013] Figure 2 This is a schematic diagram of the fabric take-up assembly in an embodiment of the present invention;

[0014] Figure 3 This is a schematic diagram of the structure of the mid-section dust removal component in an embodiment of this utility model. Detailed Implementation

[0015] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0016] The embodiment of this utility model is as follows:

[0017] refer to Figure 1 , Figure 2 and Figure 3 As shown, a fabric take-up mechanism for a circular knitting machine includes a frame 1, a transmission box 2, a drive motor 3, a first transmission shaft 4, a second transmission shaft 5, a first transmission assembly 6, a second transmission assembly 7, a first gear 8, a large disc gear 9, a fabric take-up assembly 10, and a mid-section dust removal assembly 11. The transmission box 2 is mounted on the frame 1. The first transmission shaft 4 is rotatably mounted on the transmission box 2. The drive motor 3 is connected to the first transmission shaft 4 via the first transmission assembly 6. The second transmission shaft 5 is rotatably mounted on the frame 1. The first transmission shaft 4 is connected to the second transmission shaft 5 via the second transmission assembly 7. The first gear 8 is located at the lower part of the second transmission shaft 7. The large disc gear 9 is rotatably mounted on the frame 1 and meshes with the first gear 8. The fabric take-up assembly 10 is located below the large disc gear 9. The mid-section dust removal assembly 11 is located between the large disc gear 9 and the fabric take-up assembly 10.

[0018] The fabric take-up assembly 10 includes a take-up frame 101, a support shaft 102, a bearing seat 103, a take-up roller 104, a take-up motor (not shown in the figure), a clamping roller 105, and two adjustment assemblies 106. The take-up frame 101 is rotatably mounted on the frame 1 via the support shaft 102 and the bearing seat 103. The take-up roller 104 is rotatably mounted on the lower part of the take-up frame 101. The take-up motor is connected to the take-up roller 104. The clamping roller 105 is rotatably mounted on the take-up frame 101 and located above the take-up roller 104. The take-up frame 101 is connected to the large disc gear 9 via two adjustment assemblies 106. The two adjustment assemblies 106 are axially symmetrically distributed.

[0019] The first transmission component 6 and the second transmission component 7 mentioned above are gear components or pulley components, and in this embodiment they are pulley components.

[0020] The fabric take-up mechanism of this circular knitting machine utilizes a dual-drive shaft and gear meshing transmission system. Through the synergistic action of the first drive shaft 4 and the second drive shaft 5, the rotational speed fluctuation rate is effectively reduced to below 0.8%. Combined with the tooth profile correction design of the large disc gear 9, the transmission efficiency is improved. Furthermore, the adjustment component 106, through a three-dimensional hinge mechanism, enables ±5° pitch adjustment of the take-up frame and ±3mm axial fine adjustment, which can compensate for 0.1-0.5mm variations in fabric thickness in real time. It is particularly suitable for constant tension take-up of elastic fabrics, ensuring balanced take-up tension and thus improving the stability of equipment operation. The integrated design of the mid-section dust removal component 11 and the take-up component 10 moves the dust removal operation position forward to the knitting and forming section. Combined with the negative pressure adsorption system, it can remove more than 90% of free fibers, reducing the risk of secondary fabric contamination compared to end-of-line dust removal.

[0021] Specifically, the adjustment assembly 106 includes a first connecting rod 201, a second connecting rod 202, and a telescopic rod 203. The upper end of the first connecting rod 201 is vertically mounted on the large disc gear 9. One end of the telescopic rod 203 is hinged to the lower end of the first connecting rod 201. One end of the second connecting rod 202 is hinged to the other end of the telescopic rod 203. The other end of the second connecting rod 202 is hinged to the upper end of the winding frame 101. The three-bar linkage mechanism, namely the first connecting rod 201, the telescopic rod 203, and the second connecting rod 202, forms a spatial four-degree-of-freedom adjustment system. The electric push rod of the telescopic rod 203 achieves displacement control with a precision of 0.01mm. With the help of an angle sensor, it can automatically compensate for the amplitude deviation of 0.2-0.7mm caused by centrifugal force. The universal joint hinge design gives the adjustment assembly 106 anti-torsion characteristics, and it can still maintain adjustment stability at a speed of 1500rpm. Compared with the traditional rigid connection method, the vibration amplitude is reduced.

[0022] Furthermore, the second connecting rod 202 is distributed along the axial direction of the take-up roller 104, and the second connecting rod 202 is arranged axially parallel to the take-up roller 104 to form a force couple balance structure, so that the adjustment torque is evenly distributed along the roller surface, avoiding roller deformation caused by stress concentration at a single point. This layout ensures that the line of action of the adjustment force always passes through the center of mass of the take-up frame 101, reducing the generation of additional moment of inertia, and reducing the vibration value of the equipment during the acceleration phase.

[0023] In this embodiment, the mid-section dust removal assembly 11 includes a first support rod 111, a connecting seat 112, a second support rod 113, and two dust removal rollers 114. The connecting seat 112 is rotatably mounted on the lower end of the first support rod 111 via a bearing 115. The second support rod 113 is mounted on the connecting seat 112 and is distributed in the transverse direction. The two dust removal rollers 114 are rotatably mounted on the transverse ends of the second support rod 113. The rotation mechanism of the second support rod 113 enables adaptive adjustment of the included angle from 15° to 35°, increasing the dust removal contact area. The rotatable connecting seat 112 design allows the dust removal rollers 114 to automatically deflect ±8° following the fabric direction, avoiding abrasions on the fabric surface caused by hard contact.

[0024] Furthermore, the second support rod 113 includes a crossbar 301 and diagonal rods 302 disposed on both sides of the crossbar 301. The two dust removal rollers 114 are respectively disposed on the free ends of the diagonal rods 302. The angle between the central axis of the diagonal rod 302 and the central axis of the crossbar 301 is 120°. The truss structure of the diagonal rod 302 and the crossbar 301 improves the overall rigidity and reduces the deformation when subjected to lateral force. In addition, the angle design makes the dust removal rollers 114 form tangential contact with the fabric, reducing the positive pressure while maintaining an effective insertion depth of 8mm for the dust removal brush bristles.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0028] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A fabric take-up mechanism for a circular knitting machine, characterized in that: The device includes a frame, a transmission box, a drive motor, a first transmission shaft, a second transmission shaft, a first transmission assembly, a second transmission assembly, a first gear, a large disc gear, a fabric take-up assembly, and a mid-section dust removal assembly. The transmission box is mounted on the frame, the first transmission shaft is rotatably mounted on the transmission box, the drive motor is connected to the first transmission shaft via the first transmission assembly, the second transmission shaft is rotatably mounted on the frame, the first transmission shaft is connected to the second transmission shaft via the second transmission assembly, the first gear is located at the lower part of the second transmission shaft, the large disc gear is rotatably mounted on the frame and meshes with the first gear, the fabric take-up assembly is located below the large disc gear, and the mid-section dust removal assembly is located between the large disc gear and the fabric take-up assembly. The fabric take-up assembly includes a take-up frame, a support shaft, a bearing seat, a take-up roller, a take-up motor, a clamping roller, and two adjustment components. The take-up frame is rotatably mounted on the frame via the support shaft and the bearing seat. The take-up roller is rotatably mounted on the lower part of the take-up frame. The take-up motor is connected to the take-up roller. The clamping roller is rotatably mounted on the take-up frame and located above the take-up roller. The take-up frame is connected to a large disc gear via two adjustment components, and the two adjustment components are axially symmetrically distributed.

2. The fabric take-up mechanism for a circular knitting machine according to claim 1, characterized in that: The adjustment assembly includes a first connecting rod, a second connecting rod, and a telescopic rod. The upper end of the first connecting rod is vertically mounted on the large disc gear. One end of the telescopic rod is hinged to the lower end of the first connecting rod. One end of the second connecting rod is hinged to the other end of the telescopic rod. The other end of the second connecting rod is hinged to the upper end of the winding frame.

3. The fabric take-up mechanism for a circular knitting machine according to claim 2, characterized in that: The second connecting rod is distributed along the axial direction of the take-up roller.

4. The fabric take-up mechanism for a circular knitting machine according to any one of claims 1 to 3, characterized in that: The mid-section dust removal assembly includes a first support rod, a connecting seat, a second support rod, and two dust removal rollers. The connecting seat is rotatably mounted on the lower end of the first support rod via a bearing. The second support rod is mounted on the connecting seat and is distributed in the transverse direction. The two dust removal rollers are rotatably mounted on the transverse ends of the second support rod.

5. The fabric take-up mechanism for a circular knitting machine according to claim 4, characterized in that: The second support rod includes a horizontal bar and diagonal bars on both sides of the horizontal bar. The two dust removal rollers are respectively disposed on the free ends of the diagonal bars. The angle between the central axis of the diagonal bars and the central axis of the horizontal bar is 120°.

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