Swing structure of guide bar cradle of warp knitting machine
By adopting a fixed connection structure of multiple short swing shafts and fixed seats in the comb cradle structure of the warp knitting machine, the consistency problem of the comb cradle components is solved, the "stiffness phenomenon" is reduced, and the loop forming efficiency and machine operation stability are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN JILONG MACHINE TECHNOLOGIES CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-19
AI Technical Summary
In the existing warp knitting machine comb cradle structure, the slight differences between the comb cradle components cause a "stiffness phenomenon" that affects the loop forming efficiency, and the consistency of the components is highly required.
Multiple shorter swing shafts are used and fixed to the fixed base through a unique fixed connection structure to ensure that the swing shafts are set coaxially and spaced apart. The swing shafts are positioned by the fixed base. The connection structure between the rocker and the swing shafts is adjusted to reduce the consistency requirements. At the same time, bearings and limit rings are set on the rocker to maintain stable swing.
It reduces the impact of minor differences between comb cradle components, avoids "stiffness," and improves coiling efficiency and machine operation stability.
Smart Images
Figure CN224258933U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of warp knitting machines, and in particular to a oscillating structure for the comb cradle of a warp knitting machine. Background Technology
[0002] The common oscillating structure of the guide bar cradle in existing warp knitting machines mainly includes multiple fixed seats, a long swing shaft, and multiple guide bar cradle assemblies. These fixed seats are arranged side-by-side at intervals to support and fix the entire oscillating structure. The long swing shaft is installed through all the fixed seats, and each fixed seat has a shaft hole with a bearing installed inside to reduce friction and support the rotational oscillation of the long swing shaft. All these guide bar cradle assemblies are individually fixed to the long swing shaft with screws, forming an integral structure with the long swing shaft. During operation, all guide bar cradle assemblies are driven by the guide bar transmission mechanism located at the bottom of the warp knitting machine. This mechanism transmits power to the cradle at the top of the guide bar cradle assembly through a multi-stage linkage mechanism, driving the cradle to reciprocate around the long swing shaft as its central axis. The oscillation of the cradle drives the guide bars mounted on it to reciprocate, thereby ensuring that each guide bar moves according to a precisely set trajectory and rhythm during the loop-forming process, achieving a high-quality loop-forming process. Because the comb cradle assembly and the long pendulum shaft are integrated, all components must be assembled with extremely high precision. Any minute installation errors (such as gaps between components, positional deviations, or inconsistent angles) will be amplified during the oscillation process. Furthermore, minute differences between components (such as manufacturing errors or installation errors) will generate additional resistance during rotation and oscillation; this resistance is known as "stiffness" and affects the efficiency of the oscillation. Utility Model Content
[0003] The purpose of this invention is to provide a swing structure for the comb cradle of a warp knitting machine, which can reduce the requirements for consistency of the comb cradle assembly to a certain extent.
[0004] The technical solution to achieve the purpose of this utility model is: a warp knitting machine comb cradle swing structure, including multiple fixed seats arranged in parallel and spaced apart, and a comb cradle assembly is installed on each fixed seat accordingly;
[0005] The comb cradle assembly includes a cradle;
[0006] The rocker arm includes a fixed base connecting part, and a shaft mounting hole is provided on the fixed base connecting part along the distribution direction of the fixed base. A swing shaft is rotatably mounted in the shaft mounting hole.
[0007] The swing shaft and the fixed base are respectively arranged in a one-to-one correspondence;
[0008] Each mounting base has a shaft hole at the bottom for the corresponding swing shaft to pass through. The mounting base has a break at the bottom of the shaft hole, and the two ends of the break are fastened together by screws, thereby achieving the clamping and fixing of the swing shaft.
[0009] All pendulum axes are set to coaxial spacing.
[0010] During operation, all comb cradle assemblies are driven by the comb transmission mechanism located at the bottom of the warp knitting machine; it transmits power to the cradle at the top of each comb cradle assembly through a multi-stage linkage mechanism, driving each cradle to reciprocate around its corresponding swing axis.
[0011] This application replaces the original long swing shaft with multiple shorter swing shafts, and ensures that each swing shaft is coaxially spaced through a unique fixed connection structure between each fixed seat and its corresponding swing shaft. At the same time, the connection structure between the cradle and the swing shaft of the comb cradle assembly is adjusted so that the swing shaft can remain stationary when the cradle swings back and forth, providing a condition for positioning the swing shaft through the fixed seat. In the final warp knitting machine comb cradle swing structure, the comb cradle assemblies are not integrated, and the consistency requirement is slightly reduced, avoiding the "stiffness phenomenon" caused by slight differences between the comb cradle assemblies, so as not to affect the loop forming efficiency.
[0012] Furthermore, a groove is formed on the top surface of the fixed base connecting part, and two vertical wall plates are provided on both sides of the groove. One of the vertical wall plates has a through hole for the pendulum shaft to pass through, and the other vertical wall plate has a slot for the shaft end of the pendulum shaft to be inserted therein. A first bearing and a second bearing are respectively embedded in the through hole and the slot. The pendulum shaft is rotatably installed in the through hole and the slot through the first bearing and the second bearing. The bottom of the fixed base is inserted into the groove and clamps the pendulum shaft in the groove. In specific implementation, limiting retaining rings are provided at the inner ports of the through hole and the slot to axially limit the first bearing or the second bearing.
[0013] Furthermore, the cradle is an arc-shaped fixed plate; the middle part of the arc-shaped fixed plate directly serves as the fixed seat connection part. In this case, the groove can be directly opened on the top surface of the arc-shaped fixed plate to form two vertical wall panels on both sides of the groove. Compared with existing cradles where the fixed seat connection part is formed by an upward protrusion at the top of the middle of the arc-shaped fixed plate, this invention directly processes the middle part of the arc-shaped fixed plate into the fixed seat connection part, resulting in a smaller rotation radius for cradles of the same size and model. Since a larger rotation radius leads to greater inertia, and greater inertia leads to unstable oscillation, affecting weaving quality and machine operating efficiency, the cradle shape and structural design of this invention results in less inertia, which is more conducive to the high-speed operation of the warp knitting machine. Attached Figure Description
[0014] Figure 1 This is a side view of the swing structure of the comb bar oscillator of the warp knitting machine described in this utility model;
[0015] Figure 2 The oscillating structure of the warp knitting machine comb cradle described in this utility model is along... Figure 1 Schematic diagram of the structure in direction A;
[0016] Figure 3 The cradle edge described in this utility model Figure 2 Schematic diagram of the cross-sectional structure of the middle BB line;
[0017] Figure 4 This is a schematic diagram of the structure of the fixing base described in this utility model;
[0018] Figure 5 This is a three-dimensional structural diagram of the cradle described in this utility model. Detailed Implementation
[0019] The preferred embodiment of the warp knitting machine comb oscillator swing structure of this utility model is described in detail below with reference to the accompanying drawings.
[0020] Combination Figures 1-4 A warp knitting machine comb cradle swing structure includes multiple fixed seats 10 arranged side by side at intervals, and a comb cradle assembly is installed on each fixed seat 10.
[0021] The comb cradle assembly includes a cradle 20;
[0022] The rocker arm 20 includes a fixed base connecting part 21, and a shaft mounting hole is provided on the fixed base connecting part 21 along the distribution direction of the fixed base 10. A swing shaft 30 is rotatably installed in the shaft mounting hole.
[0023] The swing shaft 30 and the fixed base 10 are respectively arranged in a one-to-one correspondence;
[0024] Each fixing seat 10 has a shaft hole 11 at the bottom for the corresponding swing shaft 30 to pass through. The fixing seat 10 has a break 110 at the bottom of the shaft hole 11. The two ends of the break 110 are locked together by screws 40, thereby achieving the clamping and fixing of the swing shaft 30.
[0025] All balance axes are set at a coaxial interval of 30.
[0026] During operation, all comb cradle assemblies are driven by the comb transmission mechanism located at the bottom of the warp knitting machine; the multi-stage linkage mechanism 50 transmits power to the cradle 20 at the top of each comb cradle assembly, driving each cradle 20 to reciprocate around its corresponding swing shaft 30 as the central axis.
[0027] This application replaces the original long swing shaft with multiple shorter swing shafts 30, and ensures that each swing shaft 30 is coaxially spaced by a unique fixed connection structure between each fixed seat 10 and its corresponding swing shaft 30. At the same time, the connection structure between the cradle 20 of the comb cradle assembly and the swing shaft 30 is adjusted so that the swing shaft 30 can remain stationary when the cradle 20 swings back and forth, providing a condition for positioning the swing shaft 30 by the fixed seat 10. In the final warp knitting machine comb cradle swing structure, the comb cradle assemblies are not integrated, and the consistency requirement is slightly reduced to avoid the "stiffness phenomenon" caused by slight differences between the comb cradle assemblies, so as not to affect the loop forming efficiency.
[0028] Furthermore, combined Figure 3 and Figure 5 A groove 211 is formed on the top surface of the fixing base connecting part 21. Two vertical wall plates are provided on both sides of the groove 211. One vertical wall plate has a through hole 212 for the pendulum shaft 30 to pass through, and the other vertical wall plate has a slot 213 for the shaft end of the pendulum shaft 30 to be inserted therein. A first bearing 60 and a second bearing 70 are respectively embedded in the through hole 212 and the slot 213. The pendulum shaft 30 is rotatably mounted in the through hole 212 and the slot 213 via the first bearing 60 and the second bearing 70. The bottom of the fixing base 10 is inserted into the groove 211 and clamps the pendulum shaft 30 within the groove 211. In specific implementation, such as... Figure 3 As shown, both the through hole 212 and the slot 213 have retaining rings (80, 90, 100) at their inner ports, which axially limit the first bearing 60 or the second bearing 70. Of course, the structure of the fixed seat connecting part 21 can be, but is not limited to, the specific structure shown in the figures. It may also omit the groove 211 and instead directly open a shaft mounting hole for the swing shaft 30 to pass through. The fixed seat 10 may also be clamped and fixed to the swing shaft 30 at either end of the fixed seat connecting part 21.
[0029] Furthermore, combined Figure 1 and Figure 2 The cradle 20 is an arc-shaped fixed plate; the thickened middle part of the arc-shaped fixed plate directly serves as the connecting part 21 of the fixed seat. In this case, the groove 211 can be directly opened on the top surface of the arc-shaped fixed plate to form two vertical wall panels. Therefore, the shape and structural design of the cradle 20 of this invention results in a smaller rotation radius r and less inertia, which is more conducive to the high-speed operation of the warp knitting machine. Of course, the top of the middle part of the arc-shaped fixed plate of this invention can also extend upwards to form a protrusion, which serves as the connecting part of the fixed seat. However, in this case, the rotation radius r is too large, which may lead to unstable oscillation or limited operating speed of the warp knitting machine.
[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent process transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A oscillating structure for a warp knitting machine's comb bar cradle, comprising multiple fixed seats arranged side-by-side at intervals, each fixed seat correspondingly mounting a comb bar cradle assembly; the comb bar cradle assembly includes a cradle; the cradle includes a fixed seat connecting portion, the fixed seat connecting portion having shaft mounting holes formed along the distribution direction of the fixed seats, characterized in that: A swing shaft is rotatably mounted in the shaft mounting hole; The swing shaft and the fixed base are respectively arranged in a one-to-one correspondence; Each mounting base has a shaft hole at the bottom for the corresponding swing shaft to pass through. The mounting base has a break at the bottom of the shaft hole, and the two ends of the break are fastened together by screws, thereby achieving the clamping and fixing of the swing shaft. All pendulum axes are set to coaxial spacing.
2. The warp knitting machine comb bar oscillating structure according to claim 1, characterized in that: A groove is formed on the top surface of the fixed base connecting part. The fixed base connecting part has two vertical wall plates on both sides of the groove. One of the vertical wall plates has a through hole for the pendulum shaft to pass through, and the other vertical wall plate has a slot for the shaft end of the pendulum shaft to be inserted therein. A first bearing and a second bearing are respectively embedded in the through hole and the slot. The pendulum shaft is rotatably installed in the through hole and the slot through the first bearing and the second bearing. The bottom of the fixed base is inserted into the groove and clamps the pendulum shaft in the groove.
3. The warp knitting machine comb bar oscillating structure according to claim 2, characterized in that: Both the through hole and the inner port of the slot are provided with limiting rings, which are used to axially limit the first bearing or the second bearing.
4. The warp knitting machine comb bar oscillating structure according to claim 1, characterized in that: The cradle is an arc-shaped fixing plate; the middle part of the arc-shaped fixing plate directly serves as the connecting part of the fixing seat.