High needle count jacquard opening transmission lifting knife device
Patent Information
- Application Number
- CN202522761868.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-19
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-12-19
AI Technical Summary
[0004]1、增加提刀数量(扩展提针组件列数)以缩短提刀长度的同时增加针数，但这种既要又要的结果是提刀冗余导致机构复杂、运行效率下降，且维修困难，具体反映在当故障提针组件位于机身纵深中间或其附近时，需拆卸大量通丝绳把吊开辟操作通道，维修效率极低，同时不利于机身散热和织造企业招工；
[0015]本装置通过在第一摆轴、第二摆轴之间增置有用作重载支撑平台的至少一个从摆轴，以及配套固定于其上的提臂I、II，并以第一转接连杆实现从摆轴与第一摆轴的运动同步，保障两组重载提刀实现整体地沿上下止点路径反向同步，同时，在每组提刀的两端之间至少设置有供支撑作用的对应竖连杆，并铰接前述相应的提臂，以形成协同强化支撑结构，最终构建起对第一提刀、第二提刀(两者逐把刀交替相隔)从端到端、端与端之间的整体支撑。该整体结构可有效分散两组提刀在动载、高频变载工况下的局部应力集中，显著提升提刀整体承载力，即使采用普通铝质提刀并增加刀长且未增加刀数，完全能满足多达12288针负载提花机的高频交变载荷需求，避免每把提刀局部变形，保障设备长期稳定运行及维修便捷性，该方案突破本领域认知惯性与偏见，无需采用包括碳纤维在内等高价已知材质提刀，沿用普通铝质提刀即可控制成本，同时避免提刀冗余配置，保障设备运行效率和机身散热效果，最终解决了现有技术中提刀变形、提针组件针数、提刀数与维修便利性、制造成本之间的多重矛盾。
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Figure CN224901664U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a high-needle-count jacquard opening transmission lifting device, which is suitable for jacquard machines with heavy load and high-frequency alternating load conditions with a needle count of not less than 5376 needles, and belongs to the field of high-needle-count jacquard opening technology. Background Technology
[0002] Existing jacquard machines are mainly classified into two types based on their drive mechanism: eccentric wheel drive and conjugate cam drive. The former (such as the Staubli CX870 model) is suitable for small to medium-sized patterns (≤2688 needles), employing 17 lifting knives matched with 16 rows of lifting needle assemblies. The lifting knives are short, have low load, and are not easily deformed, with a frame-type knife holder. The latter (such as the Staubli LXLV model) is suitable for large needle counts (5376~14336 needles), employing a plate-type knife holder. Among them, the 5376~8192 needle count machines are equipped with 25 lifting knives (24 rows of lifting needle assemblies), suitable for medium to large-sized jacquard fabrics, while the 9216~14336 needle count machines are equipped with 33 lifting knives (32 rows of lifting needle assemblies), suitable for large-sized patterned fabrics. The lifting knives are all made of aluminum and are long, making them prone to deformation under the dynamic and variable loads of the heald springs and warp yarns. After deformation, the upper stop point of the lifting knives is not in place, leading to needle selection failure, weaving defects, and premature scrapping of the lifting knives.
[0003] To address the issue of tool deformation during lifting, the industry has proposed the following two improvement approaches:
[0004] 1. Increasing the number of lifting knives (expanding the number of needle lifting assembly rows) can shorten the length of the lifting knives while increasing the number of needles. However, the result of this dual approach is redundant lifting knives, which leads to complex mechanisms, reduced operating efficiency, and difficult maintenance. Specifically, when the faulty needle lifting assembly is located in or near the middle of the machine body, a large number of through-wire ropes need to be disassembled to open up an operating channel, resulting in extremely low maintenance efficiency. At the same time, it is not conducive to heat dissipation of the machine body and recruitment of workers by weaving companies.
[0005] 2. Upgrading the aluminum blade to a carbon fiber blade increases rigidity but also significantly increases costs, sacrificing economic efficiency.
[0006] Both of the above solutions have inherent flaws and cannot simultaneously achieve rigidity of the lifting tool, ease of maintenance, and economy. Therefore, a new technical solution is urgently needed to resolve this contradiction. Utility Model Content
[0007] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a large-needle jacquard opening transmission lifting device with strong lifting capacity, not easily deformed under high-frequency alternating load, convenient maintenance and needle replacement, and controllable cost.
[0008] Therefore, the present invention adopts the following technical solution:
[0009] A high-needle-count jacquard open-knife transmission lifting device includes a first lifting knife, a second lifting knife, and a main reduction gearbox, a first gearbox, a transverse transmission shaft, and a second gearbox that move sequentially. It also includes a first transmission shaft, a first swing shaft, a second swing shaft, and a second transmission shaft, all parallel and longitudinally supported on a frame. The output end of the first gearbox is connected to the first transmission shaft, and the output end of the second gearbox is connected to the second transmission shaft. The first transmission shaft fixes a first eccentric component, and the first swing shaft fixes a first main swing arm. The first eccentric component is hinged to the first main swing arm via a first connecting rod. The second transmission shaft fixes a second eccentric component, and the second swing shaft fixes a second main swing arm. The second eccentric component is hinged to the second main swing arm via a second connecting rod. The first swing shaft fixes a first inner lifting arm and a first outer lifting arm at intervals, and the second swing shaft fixes a second inner lifting arm and a second outer lifting arm at intervals. The second lifting knife... Extending between a first swing shaft and a second swing shaft, a first lifting knife extends beyond the first and second swing shafts. A first outer lifting arm is connected to the corresponding end of the first lifting knife via a first outer vertical connecting rod, and a second outer lifting arm is connected to the corresponding end of the first lifting knife via a second outer vertical connecting rod. A first inner lifting arm is connected to the corresponding end of the second lifting knife via a first inner vertical connecting rod, and a second inner lifting arm is connected to the corresponding end of the second lifting knife via a second inner vertical connecting rod. The feature is that at least one slave swing shaft supported on the frame is arranged between the first and second swing shafts. A first main swing arm is hinged to a slave swing arm fixed to the slave swing shaft via a first connecting rod. Lifting arms I and II are fixedly arranged in opposite directions at intervals along the slave swing shafts. Lifting arm I is hinged to the upper end of vertical connecting rod I, and the first lifting knife is supported at least by vertical connecting rod I. Lifting arm II is hinged to the upper end of vertical connecting rod II, and the second lifting knife is supported at least by vertical connecting rod II.
[0010] Two slave swing shafts, namely slave swing shaft one and slave swing shaft two, are provided between the first swing shaft and the second swing shaft. The first main swing arm is hinged to slave swing arm one fixed to slave swing shaft one via a first adapter link, and the second main swing arm is hinged to slave swing arm two fixed to slave swing shaft two via a second adapter link. Lifting arms I and II are fixed in opposite directions at intervals on slave swing shaft one, and lifting arms III and IV are fixed in opposite directions at intervals on slave swing shaft two. Lifting arm I is hinged to the upper end of vertical connecting rod I, and lifting arm III is hinged to the upper end of vertical connecting rod III. The first lifting knife is supported by vertical connecting rod I and vertical connecting rod III respectively. Lifting arm II is hinged to the upper end of vertical connecting rod II, and lifting arm IV is hinged to the upper end of vertical connecting rod IV. The second lifting knife is supported by vertical connecting rod II and vertical connecting rod IV respectively.
[0011] The first and second bevel gear boxes mentioned above are driven at equal speeds.
[0012] The total number of the first and second lifting knives mentioned above shall not exceed 25, and preferably not exceed 17.
[0013] The aforementioned main reduction gearbox includes a vertically rotating main input shaft and a horizontally rotating main reduction output shaft. The first gearbox includes a horizontally rotating first shaft and a vertically rotating first reversing output shaft. The second gearbox includes a horizontally rotating second shaft and a vertically rotating second reversing output shaft. The main reduction output shaft, the first shaft, the horizontal transmission shaft, and the second shaft are connected in sequence by couplings. The first transmission shaft is connected to the first reversing output shaft by a coupling, and the second transmission shaft is connected to the second reversing output shaft by a coupling.
[0014] This utility model has the following advantages and positive effects:
[0015] This device adds at least one secondary swing shaft, which serves as a heavy-duty support platform, between the first and second swing shafts, along with lifting arms I and II fixed thereon. The movement of the secondary swing shaft and the first swing shaft is synchronized by a first connecting rod, ensuring that the two sets of heavy-duty lifting blades move synchronously in opposite directions along the upper and lower stop paths. At the same time, at least one corresponding vertical connecting rod for support is provided between the two ends of each set of lifting blades, and the aforementioned corresponding lifting arms are hinged to form a synergistic and reinforced support structure. Ultimately, it constructs an overall support for the first and second lifting blades (which alternate between blades) from end to end and from end to end. This overall structure effectively disperses local stress concentration in the two sets of lifting knives under dynamic and high-frequency variable load conditions, significantly improving the overall load-bearing capacity of the lifting knives. Even with ordinary aluminum lifting knives and increased knife length without increasing the number of knives, it can fully meet the high-frequency alternating load requirements of jacquard machines with up to 12,288 needles, avoiding local deformation of each lifting knife, ensuring long-term stable operation and ease of maintenance. This solution breaks through the conventional wisdom and prejudice in the field, eliminating the need to use lifting knives made of expensive known materials such as carbon fiber. It can control costs by using ordinary aluminum lifting knives, while avoiding redundant lifting knife configurations, ensuring equipment operating efficiency and heat dissipation. Ultimately, it solves the multiple contradictions between lifting knife deformation, needle number in the lifting needle assembly, number of lifting knives, ease of maintenance, and manufacturing cost in existing technologies. Attached Figure Description
[0016] Figure 1 A front view is shown according to a first embodiment of the present invention;
[0017] Figure 2 Show Figure 1 Rear view of the embodiment shown;
[0018] Figure 3 Show Figure 1 Top view of the embodiment shown;
[0019] Figure 4 Show Figure 2 A perspective view of the embodiment shown;
[0020] Figure 5A front view is shown according to a second embodiment of the present invention;
[0021] Figure 6 Show Figure 5 Rear view of the embodiment shown;
[0022] Figure 7 Show Figure 5 Top view of the embodiment shown;
[0023] Figure 8 Show Figure 6 A perspective view of the embodiment shown. Detailed Implementation
[0024] Example 1
[0025] Figure 1 The front shed is positioned and has a corresponding transverse groove-shaped front crossbeam G1, a main deceleration bevel gear box 9, a first bevel gear box 1, a transverse drive shaft 3, and a second bevel gear box 2, which run from upstream to downstream. Figure 2 The orientation is for the large shed, and there is a transverse groove-shaped rear crossbeam G2, a first transition link 61R, and a follower arm 70. Figure 3 The longitudinal axis is shown as 7 from the pendulum axis.
[0026] Please see Figures 1-4 The high-needle-count jacquard open-end transmission lifting device includes a first lifting knife F1, a second lifting knife F2, and a main reduction gear box 9, a first gear box 1, a transverse transmission shaft 3, and a second gear box 2 connected in sequence for motion transmission. It also includes a first transmission shaft 4R, a first swing shaft 5R, a second swing shaft 5L, and a second transmission shaft 4L, which are parallel to each other and longitudinally supported on the frame. The output end of the first gear box 1 is connected to the first transmission shaft 4R, and the output end of the second gear box 2 is connected to the second transmission shaft 4L. The first transmission shaft 4R fixes the first eccentric member 40R (a crank in this embodiment), and the first swing shaft 5R fixes the first main swing arm 50R. The first eccentric member 40R is connected to the first main swing arm 50R. The connecting rod 6R is hinged to the first main swing arm 50R. The second transmission shaft 4L fixes the second eccentric member 40L (which is also a crank). The second swing shaft 5L fixes the second main swing arm 50L. The second eccentric member 40L is hinged to the second main swing arm 50L via the second connecting rod 6L. The first swing shaft 5R fixes the first inner lifting arm 61-1R and the first outer lifting arm 61R at intervals (equal intervals in this embodiment). The second swing shaft 5L fixes the second inner lifting arm 61-1L and the second outer lifting arm 61L at intervals (also equal intervals). The second lifting blade F2 extends between the first swing shaft 5R and the second swing shaft 5L. The first lifting blade F1 extends beyond the first swing shaft 5R and the second swing shaft 5L. See also... Figure 3As shown, the first outer vertical connecting rod 62R has its upper end hinged to the first outer lifting arm 61R and its lower end hinged to the right end of the first lifting knife F1; the second outer vertical connecting rod 62L has its upper end hinged to the second outer lifting arm 61L and its lower end hinged to the left end of the first lifting knife F1; the first inner vertical connecting rod 62-1R has its upper end hinged to the first inner lifting arm 61-1R and its lower end hinged to the right end of the second lifting knife F2; the second inner vertical connecting rod 62-1L has its upper end hinged to the second inner lifting arm 61-1L and its lower end hinged to the left end of the second lifting knife F2. Relatively speaking, the first outer lifting arm is farther from the center of the machine body, and the first inner lifting arm is closer to the center of the machine body. The same applies to the second outer lifting arm and the second inner lifting arm. The aforementioned lifting arms are fixed to the lifting arm seats at intervals on each swing shaft, and the two ends of the lifting arm seats are used for the fixed connection of the lifting arms. Figure 4 At least one slave swing shaft supported on the frame is arranged between the first swing shaft 5R and the second swing shaft 5L. Figure 3 , 4 As shown in the diagram, the first main swing arm 50R is hinged to the secondary swing arm 70 fixed to the secondary swing arm 7 via the first adapter link 61R. Figure 2 , 4 It has been shown that, ideally, the swing arm 70 is centrally positioned between the axes of the first swing arm 5R and the second swing arm 5L; Figure 3 As can be seen, lifting arms I71 and II73 are fixed in opposite directions at intervals (equal intervals in this embodiment) from the swing shaft. Lifting arm I71 is hinged to the upper end of the vertical connecting rod I72, and the lower end of the vertical connecting rod I72 is hinged to the first lifting knife F1; lifting arm II73 is hinged to the upper end of the vertical connecting rod II74, and the lower end of the vertical connecting rod II74 is hinged to the second lifting knife F2. Figure 4 .
[0027] like Figure 1 , 2 As shown, the frame has a slotted front crossbeam G1 and a slotted rear crossbeam G2. The main reduction gearbox 9, the first bevel gearbox 1, and the second bevel gearbox 2 are respectively fixed to the bottom G10 of the slotted front crossbeam G1. The first drive shaft, the first swing shaft, the first swing shaft, the second swing shaft, and the second drive shaft are sequentially supported on the slotted front crossbeam and the slotted rear crossbeam. The first bevel gearbox 1 and the second bevel gearbox 2 drive at equal speeds, and their speeds are equal to the output speed of the main reduction gearbox 9.
[0028] Based on its quick and convenient maintenance, the needle-lifting assembly in the middle of the machine body can be repaired without disassembling a large number of threading ropes, greatly improving maintenance efficiency and reducing the difficulty of recruiting workers for enterprises. The sum of the first lifting knife F1 and the second lifting knife F2 is 17, but it can also be no more than 17, or 25, or no more than 25. This can overcome the problem of difficult needle-lifting assembly replacement for weaving enterprises.
[0029] The diagram only shows two first-hand swords F1 and two second-hand swords F2. If they were arranged in a row, there would be eight first-hand swords and nine second-hand swords.
[0030] The main reduction gearbox 9 includes a vertically rotating main input shaft 91 and a horizontally rotating main reduction output shaft 92. The main input shaft 91 is mechanically connected to the loom's transmission box via a universal vertical shaft (partially drawn but not marked), and is typically a reduction transmission connection. The first gearbox 1 includes a horizontally rotating first shaft 11 and a vertically rotating first reversing output shaft 12. The second gearbox includes a horizontally rotating second shaft 21 and a vertically rotating second reversing output shaft 22. The main reduction output shaft 92, the first shaft 11, the horizontal transmission shaft 3, and the second shaft 21 are sequentially connected via couplings. Figure 1 The diagram shows three flexible diaphragm couplings Q. The first drive shaft 4R is connected to the first reversing output shaft 12 via a coupling, and the second drive shaft 4L is connected to the second reversing output shaft 22 via a coupling. Figure 3 , 4 The details show two clamp couplings q. The opposite rotation of the first drive shaft 4R and the second drive shaft 4L is achieved by the opposite rotation of the input bevel gear of the first bevel gear box 1 (not shown) and the input bevel gear of the second bevel gear box 2.
[0031] Example 2
[0032] Figure 5 It remains in the front shed orientation and has a corresponding transverse groove-shaped front crossbeam G1. From upstream to downstream, it still has a main deceleration bevel gear box 9, a first bevel gear box 1, a transverse drive shaft 3, and a second bevel gear box 2. Figure 6 It remains in the large shed orientation and has a corresponding transverse groove-shaped rear crossbeam G2, a first transition link 61R and a follower arm 70, and a second transition link 61L and a follower arm 80. Figure 7 Showing the longitudinal pendulum axis 1 7 and the longitudinal pendulum axis 2 8.
[0033] See Figures 5-8 As shown, based on the aforementioned technical content, the difference lies in that two slave swing shafts, namely slave swing shaft one 7 and slave swing shaft two 8, are sequentially arranged between the first swing shaft 5R and the second swing shaft 5L, supported on the frame. Ideally, the axes of the first swing shaft 5R, slave swing shaft one 7, slave swing shaft two 8, and second swing shaft 5L are equally spaced. The first main swing arm 50R is hinged to the slave swing arm one 70 fixed to the slave swing shaft one 7 via the first adapter link 61R, and the second main swing arm 50L is hinged to the slave swing arm two 80 fixed to the slave swing shaft two 8 via the second adapter link 61L. Figure 7As can be seen, lifting arms I71 and II73 are fixed in opposite directions at intervals (equal intervals in this embodiment) from the first pivot 7, and lifting arms III81 and IV83 are fixed in opposite directions at intervals (also equal intervals) from the second pivot 8; lifting arm I71 is hinged to the upper end of vertical connecting rod I72, lifting arm III81 is hinged to the upper end of vertical connecting rod III82, and the lower ends of vertical connecting rod I72 and vertical connecting rod III82 are respectively hinged to the first lifting knife F1; lifting arm II73 is hinged to the upper end of vertical connecting rod II74, lifting arm IV83 is hinged to the upper end of vertical connecting rod IV84, and the lower ends of vertical connecting rod II74 and vertical connecting rod IV84 are respectively hinged to the second lifting knife F2, combined with Figure 8 .
[0034] By setting two support points between the two ends of each lifting knife along its length, the advantage of longer lifting knives being less prone to deformation is further demonstrated. The further optimized technical solution can adapt to jacquard opening devices with larger needle counts and their longer lifting knives, ultimately ensuring that ordinary aluminum lifting knives of the corresponding length for jacquard machines with up to 20480 needles are still not easily deformed.
[0035] In the description of this utility model, the terms "first," "second," "one," "two," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be interchanged where appropriate (for example, the technology of this patent application can also be used with a left-handed loom) so that the embodiments of this application described herein can be implemented in a sequence other than those illustrated or described herein. According to another variation not shown in Embodiment 1, the first connecting link can be replaced by hinged to the second main swing arm to produce a new embodiment. The directional terms used, such as "inner" and "outer," are generally relative to the directions shown in the drawings.
Claims
1. A high-needle-count jacquard open-end transmission lifting device, comprising a first lifting knife, a second lifting knife, and a main reduction gearbox, a first gearbox, a transverse transmission shaft, and a second gearbox that move sequentially, as well as a first transmission shaft, a first swing shaft, a second swing shaft, and a second transmission shaft that are parallel to each other and longitudinally supported on the frame; the output end of the first gearbox is connected to the first transmission shaft, the output end of the second gearbox is connected to the second transmission shaft, the first transmission shaft fixes a first eccentric member, the first swing shaft fixes a first main swing arm, the first eccentric member is hinged to the first main swing arm through a first connecting rod, the second transmission shaft fixes a second eccentric member, and the second swing shaft fixes a second eccentric member. The main swing arm, with the second eccentric member hinged to the second main swing arm via a second connecting rod; a first swing shaft fixes the first inner lifting arm and the first outer lifting arm at intervals, and a second swing shaft fixes the second inner lifting arm and the second outer lifting arm at intervals; a second lifting blade extends between the first and second swing shafts, and the first lifting blade extends beyond the first and second swing shafts; the first outer lifting arm is connected to the corresponding end of the first lifting blade via a first outer vertical connecting rod, and the second outer lifting arm is connected to the corresponding end of the first lifting blade via a second outer vertical connecting rod; the first inner lifting arm is connected to the corresponding end of the second lifting blade via a first inner vertical connecting rod, and the second inner lifting arm is connected to the corresponding end of the second lifting blade via a second inner vertical connecting rod, characterized in that... At least one slave swing shaft supported on the frame is arranged between the first swing shaft and the second swing shaft. The first main swing arm is hinged to the slave swing arm fixed on the slave swing shaft through the first connecting rod. Lifting arms I and II are fixed at intervals and arranged in opposite directions on the slave swing shaft. Lifting arm I is hinged to the upper end of vertical connecting rod I, and the first lifting knife is supported by at least vertical connecting rod I. Lifting arm II is hinged to the upper end of vertical connecting rod II, and the second lifting knife is supported by at least vertical connecting rod II.
2. The high-needle-count jacquard opening transmission and lifting device according to claim 1, characterized in that, Two slave swing shafts supported on the frame are provided between the first swing shaft and the second swing shaft, namely slave swing shaft one and slave swing shaft two in sequence; the first main swing arm is hinged to slave swing arm one fixed on slave swing shaft one through the first adapter link, and the second main swing arm is hinged to slave swing arm two fixed on slave swing shaft two through the second adapter link; lifting arms I and II are fixed in opposite directions at intervals on slave swing shaft one, and lifting arms III and IV are fixed in opposite directions at intervals on slave swing shaft two. Lifting arm I is hinged to the upper end of vertical link I, lifting arm III is hinged to the upper end of vertical link III, and the first lifting knife is supported by vertical link I and vertical link III respectively; lifting arm II is hinged to the upper end of vertical link II, lifting arm IV is hinged to the upper end of vertical link IV, and the second lifting knife is supported by vertical link II and vertical link IV respectively.
3. The high-needle-count jacquard opening transmission and lifting device according to claim 1 or 2, characterized in that, The first bevel gear box and the second bevel gear box are driven at equal speeds.
4. The high-needle-count jacquard opening transmission and lifting device according to claim 1 or 2, characterized in that, The total number of the first and second lifting knives is no more than 17.
5. The high-needle-count jacquard opening transmission and lifting device according to claim 3, characterized in that, The main deceleration bevel gear box includes a vertically rotating main input shaft and a horizontally rotating main deceleration output shaft. The first bevel gear box includes a horizontally rotating first shaft and a vertically rotating first reversing output shaft. The second bevel gear box includes a horizontally rotating second shaft and a vertically rotating second reversing output shaft. The main reduction output shaft, the first shaft, the transverse transmission shaft, and the second shaft are connected in sequence by couplings. The first transmission shaft is connected to the first reversing output shaft by a coupling, and the second transmission shaft is connected to the second reversing output shaft by a coupling.