Cam transmission jacquard
By combining the outer and inner spindles with an interlocking cam drive and guide system, the stability and speed issues of the jacquard machine are solved, achieving efficient tool holder movement and reducing maintenance difficulty.
Patent Information
- Application Number
- CN202423244297.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing jacquard machines suffer from poor blade holder lifting stability, low operating speed, and difficulties in lubrication and maintenance.
The outer and inner spindles are connected by an inner and outer sleeve. Combined with the first and second cam transmission devices, the staggered up and down movement of the first and second tool frames is achieved through the movement of staggered tie rods and rollers, which enhances the driving stability. The staggered guide system further improves the stability and speed of the movement.
It improves the overall lifting stability and speed of the jacquard machine, reduces maintenance costs and time, and ensures synchronization and smoothness during high-speed movement.
Smart Images
Figure CN223548193U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of jacquard machines, and specifically relates to a cam-driven jacquard machine. Background Technology
[0002] Existing jacquard machines use an input shaft driven by continuous rotary motion and equipped with four eccentric wheels, each associated with a lever for controlling rocker arms. The blade holder is suspended by corresponding short and long links on two rocker arms located on either side of the blade assembly. Given the drive mechanisms for the blade holder, they perform tilting reciprocating motions, and each requires linear guidance. This is typically achieved through spherical bearings connecting the blades to the blade holder, thus requiring extensive lubrication, which involves laborious maintenance resulting in lubricant splashing onto the knitting area, and subsequent replacement and maintenance of the spherical bearings. A system for guiding the heald frame is known, wherein a first bolt is hinged to a first fixed point of the jacquard mechanism, a second bolt is hinged to a second fixed point of the mechanism, and a third bolt is hinged to both the first and second bolts and to the blade holder at a moving hinge point. The complex movement of the third bolt ensures that the blade holder only moves vertically when the moving hinge point between the third bolt and the blade holder overlaps with the first fixed point. This overlap is disadvantageous in terms of compactness, especially when space must be made for the overlapping guide system of the two blade holders. Overall, existing jacquard machines mainly suffer from problems such as poor blade holder lifting stability and low operating speed. Utility Model Content
[0003] This invention provides a cam-driven jacquard machine with a simple structure, stable up-and-down movement of the tool holder, and fast lifting speed.
[0004] A cam-driven jacquard loom includes an outer main shaft and an inner main shaft connected in an inner-outer sleeve. A first cam drive device is connected to the end of each shaft of the outer main shaft, and a second cam drive device is connected to the end of each shaft of the inner main shaft. The first cam drive device includes a first arc-shaped lifting arm, with a first lifting section and a second lifting section at its two ends. The first lifting section is connected to a first pull rod, and the second lifting section is connected to a second pull rod. The first pull rod is connected to one side of a first cutter frame, and the second pull rod is connected to one side of a second cutter frame. The second cam drive device includes a second arc-shaped lifting arm, with a third lifting section and a fourth lifting section at its two ends. The third lifting section is connected to a third pull rod, and the fourth lifting section is connected to a fourth pull rod. The third pull rod is connected to the other side of the second cutter frame, and the fourth pull rod is connected to the other side of the first cutter frame. The first cutter frame is connected to a first cutter frame guide system, and the second cutter frame is connected to a second cutter frame guide system.
[0005] The first blade frame guiding system includes a first guide arm, with the first blade frame hinged in the middle of the first guide arm, one end of the first guide arm hinged to one end of the first guide rod, and the other end of the first guide arm hinged to one end of the second guide rod; the other end of the first guide rod is hinged to the jacquard machine frame, and the other end of the second guide rod is hinged to the jacquard machine frame.
[0006] The second blade frame guiding system includes a second guide arm, with the second blade frame hinged in the middle of the second guide arm, one end of the second guide arm hinged to one end of a third guide rod, and the other end of the second guide arm hinged to one end of a fourth guide rod; the other end of the third guide rod is hinged to the jacquard machine frame; the other end of the fourth guide rod is hinged to the jacquard machine frame.
[0007] The second guide arm is vertically positioned, while the third and fourth guide rods are horizontally positioned; the first guide arm is vertically positioned, while the second and fourth guide rods are horizontally positioned; the third guide rod is parallel to the first guide rod; the second guide rod is parallel to the fourth guide rod. This cam-driven jacquard machine uses an outer spindle and an inner spindle connected by an inner and outer sleeve. The outer spindle connects to the first cam drive device, and the inner spindle connects to the second cam drive device. This ensures that the first and second cam drive devices remain coaxial during operation, preventing misalignment during high-speed movement. The first pull rod connects to one side of the first cutter frame, the second pull rod connects to one side of the second cutter frame, the third pull rod connects to the other side of the second cutter frame, and the fourth pull rod connects to the other side of the first cutter frame. In other words, the second cutter frame is lifted up and down by the second and third pull rods, while the first cutter frame is lifted up and down by the second and third pull rods. The first and fourth pull rods lift the first and fourth cutter frames vertically, with the lifting force derived from the outer and inner main shafts respectively, thus increasing the lifting force on the first cutter frame. Similarly, the second cutter frame is lifted vertically by the second and third pull rods, with the lifting force also derived from the outer and inner main shafts respectively, further enhancing the lifting force on the second cutter frame. The first and second lifting sections form a front-to-back structure, which, together with the front-to-back structures formed by the third and fourth lifting sections, creates an interlaced structure, further improving stability during the lifting process. The first and second cutter frame guiding systems utilize parallel third and fourth guide rods, further enhancing stability during the vertical lifting motion of the first and second cutter frames and facilitating high-speed lifting.
[0008] The first cam transmission device further includes a first cam arm that is low at both ends and high in the middle. A first roller and a second roller are respectively provided at both ends of the first cam arm. The movement trajectory of the first roller is controlled by the first cam, and the movement trajectory of the second roller is controlled by the second cam. The second cam transmission device further includes a second cam arm that is low at both ends and high in the middle. A third roller and a fourth roller are respectively provided at both ends of the second cam arm. The movement trajectory of the third roller is controlled by the third cam, and the movement trajectory of the fourth roller is controlled by the fourth cam. The first cam arm is connected to the outer spindle; the second cam arm is connected to the inner spindle. The movement trajectories of the first roller and the second roller, controlled by the second cam, form a set of kinematic pairs that work together to provide vertical lifting force to both the second and first tool frames via the outer spindle. The movement trajectories of the third roller and the fourth roller, controlled by the third cam, form a set of kinematic pairs that work together to provide vertical lifting force to both the second and first tool frames via the inner spindle. The inner and outer spindles provide driving force to the second and first tool frames in opposite directions.
[0009] The first cam, second cam, third cam, and fourth cam are interconnected to form an integrated structure, and are also connected to the drive shaft to improve the synchronization of the drive; the movement trajectories of the first roller and the second roller are staggered; the movement trajectories of the third cam and the fourth cam are staggered, so that the second cutter frame and the first cutter frame move alternately up and down.
[0010] The first blade frame includes two first connecting plates, and two or more first lifting blades are installed between the two first connecting plates to improve the overall integrity of the first lifting blades during movement; the second blade frame includes two second connecting plates, and two or more second lifting blades are installed between the two second connecting plates to improve the overall integrity of the second lifting blades during movement.
[0011] The second blade frame has an upper component box on its upper side, containing two or more component supports. The upper edge of the upper component box is inclined upwards. The first blade frame has a lower component box on its lower side. The upward inclination of the upper edge of the upper component box improves the matching degree of the electronic components installed in the upper component box with the movement of the second and first blades.
[0012] When the first pull rod moves downward, the second pull rod moves upward, and simultaneously the third pull rod moves upward and the fourth pull rod moves downward. When the first pull rod moves upward, the second pull rod moves downward, and simultaneously the third pull rod moves downward and the fourth pull rod moves upward, driving the first cutter frame and the second cutter frame to move alternately up and down.
[0013] When the first roller moves downward, the second roller moves upward, and simultaneously the third roller moves upward and the fourth roller moves downward; when the first roller moves upward, the second roller moves downward, and simultaneously the third roller moves downward and the fourth roller moves upward, forming an interactive driving performance for the first cam arm and the second cam arm.
[0014] Both ends of the outer spindle are connected to a first connecting tube integrally formed with a first arc-shaped lifting arm. The outer wall of the first connecting tube is provided with a first limiting groove and a second limiting groove. Both ends of the inner spindle are connected to a second connecting tube integrally formed with a second arc-shaped lifting arm. The third lifting section cooperates with the first limiting groove, and the fourth lifting section cooperates with the second limiting groove. The first connecting tube integrally formed with the first arc-shaped lifting arm and the second connecting tube integrally formed with the second arc-shaped lifting arm improve the overall performance of the driving force of the outer and inner spindles.
[0015] This utility model of a cam-driven jacquard machine improves the overall jacquard stability and speed of the machine by simultaneously and alternately driving two staggered cam transmission devices with an outer spindle and an inner spindle, combined with two staggered parallel cutter frame guide systems, and effectively reduces maintenance costs and time. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings:
[0017] Figure 1 This is a three-dimensional structural diagram of the cam-driven jacquard machine of this utility model;
[0018] Figure 2 This is a partial three-dimensional structural diagram of the cam-driven jacquard machine of this utility model;
[0019] Figure 3 This is a partial three-dimensional structural diagram of the cam-driven jacquard machine of this utility model;
[0020] Figure 4 This is a schematic diagram of the three-dimensional installation structure of the first and second arc lifting arms in this utility model;
[0021] Figure 5 This is a schematic diagram of the main structure of the first and second arc lifting arms in this utility model;
[0022] Figure 6 This is a schematic cross-sectional view of the connection between the outer spindle and the inner spindle in this utility model.
[0023] Figure 7 This is a three-dimensional structural diagram of the first and second blade frames in this utility model;
[0024] Figure 8 This is a three-dimensional structural diagram of the upper component box and the lower component box in this utility model. Detailed Implementation Plan
[0025] The following is in conjunction with the appendix Figure 1-8 The specific implementation method further illustrates the technical solution of this patent.
[0026] A cam-driven jacquard loom includes an outer main shaft 72 and an inner main shaft 71 connected in an inner and outer sleeve. A first cam drive device is connected to the ends of both the outer main shaft 72 and the inner main shaft 71. The first cam drive device includes a first arc-shaped lifting arm with a first lifting section 84 and a second lifting section 83 at its two ends. The first lifting section 84 is connected to a first pull rod 10, and the second lifting section 83 is connected to a second pull rod 25. The first pull rod 10 is connected to one side of a first cutter frame 30, and the second pull rod 25 is connected to one side of a second cutter frame 33. When the first pull rod 10 drives one side of the first cutter frame 30 to move upward, and the second pull rod 25 drives one side of the second cutter frame 33 to move downward, the first cutter frame 30 and the second cutter frame 33 move alternately up and down, and vice versa.
[0027] The second cam transmission device includes a second arc-shaped lifting arm, with a third lifting section 81 and a fourth lifting section 82 at its two ends. The third lifting section 81 is connected to a third pull rod 11, and the fourth lifting section 82 is connected to a fourth pull rod 28. The third pull rod 11 is connected to the other side of the second cutter frame 33, and the fourth pull rod 28 is connected to the other side of the first cutter frame 30. When the third pull rod 11 drives one side of the second cutter frame 33 to move upward, the fourth pull rod 28 drives one side of the first cutter frame 30 to move downward, forming another alternating up-and-down movement of the first cutter frame 30 and the second cutter frame 33, and vice versa.
[0028] Thus, two opposite alternating up-and-down movements are formed, and this traffic movement can obtain the common driving force of the outer main shaft 72 and the inner main shaft 71, increasing the stability of the drive and improving the running speed.
[0029] As a preferred structural configuration, the first cutter frame 30 is connected to the first cutter frame guide system, and the second cutter frame 33 is connected to the second cutter frame guide system.
[0030] The first blade frame guiding system includes a first guide arm 34, with the first blade frame 30 hinged to the middle of the first guide arm 34. One end of the first guide arm 34 is hinged to one end of the first guide rod 32, and the other end of the first guide arm 34 is hinged to one end of the second guide rod 27. The other end of the first guide rod 32 is hinged to the jacquard machine frame, and the other end of the second guide rod 27 is hinged to the jacquard machine frame.
[0031] The second blade frame guiding system includes a second guide arm 29, with the second blade frame 33 hinged in the middle of the second guide arm 29. One end of the second guide arm 29 is hinged to one end of the third guide rod 26, and the other end of the second guide arm 29 is hinged to one end of the fourth guide rod 31. The other end of the third guide rod 26 is hinged to the jacquard machine frame, and the other end of the fourth guide rod 31 is hinged to the jacquard machine frame.
[0032] As a further technical structure, the second guide arm 29 is vertically arranged, while the third guide rod 26 and the fourth guide rod 31 are horizontally arranged. The first guide arm 34 is vertically arranged, while the second guide rod 27 and the first guide rod 32 are horizontally arranged. The third guide rod 26 is parallel to the first guide rod 32, and the second guide rod 27 is parallel to the fourth guide rod 31, ultimately ensuring that the first and second cutter frames remain in a parallel vertical state during their vertical movement, reducing wear.
[0033] As a preferred structural design, the movement trajectories of the first roller 9 and the second roller are staggered at different heights, as are the movement trajectories of the third cam 18 and the fourth cam 7. The first cam transmission device also includes a first cam arm 4, which is lower at both ends and higher in the middle. The first cam arm 4 has a first roller 9 and a second roller at its two ends, respectively. The movement trajectory of the first roller 9 is controlled by the first cam 20, and the movement trajectory of the second roller is controlled by the second cam 17. The second cam transmission device also includes a second cam arm 5, which is lower at both ends and higher in the middle. The second cam arm 5 has a third roller 22 and a fourth roller 6 at its two ends, respectively. The movement trajectory of the third roller 22 is controlled by the third cam 18, and the movement trajectory of the fourth roller is controlled by the fourth cam 7. The first cam arm 4 is connected to the outer main shaft 72, allowing the relatively smooth driving force generated by the first roller 9 and the second roller to be transmitted to the first cam transmission device and the outer main shaft 72, increasing driving stability. The second cam arm 5 is connected to the inner main shaft 71, allowing the relatively smooth driving force generated by the third roller 22 and the fourth roller 6 to be transmitted to the second cam transmission device and the outer main shaft 72, increasing driving stability.
[0034] To further improve drive stability, the first cam 20, the second cam 17, the third cam 18, and the fourth cam 7 are interconnected to form an integral structure, and are also connected to the drive shaft 8. The first cutter frame 30 includes two first connecting plates, and two or more first lifting cutters 41 are installed between the two first connecting plates. The second cutter frame 33 includes two second connecting plates, and two or more second lifting cutters 40 are installed between the two second connecting plates.
[0035] The upper side of the second blade frame 33 is provided with an upper component box 12, which contains two or more component supports 50. The upper edge of the upper component box 12 is inclined upward to improve the adaptability of the electronic components installed in the upper component box 12 to the vertical movement of the first lifting blade 41 and the second lifting blade 40. The lower side of the first blade frame 30 is provided with a lower component box 19.
[0036] To further improve the stability of the movement, when the first pull rod 10 moves downward, the second pull rod 25 moves upward, while the third pull rod 11 moves upward and the fourth pull rod 28 moves downward. This movement, where the first pull rod 10 moves upward, the second pull rod 25 moves downward, the third pull rod 11 moves downward, and the fourth pull rod 28 moves upward, drives the first cutter frame 30 and the second cutter frame 33 to move alternately up and down. When the first roller 9 moves downward, the second roller moves upward, while the third roller 22 moves upward and the fourth roller 6 moves downward; conversely, when the first roller 9 moves upward, the second roller moves downward, while the third roller 22 moves downward and the fourth roller 6 moves upward.
[0037] As a preferred structure, both ends of the outer main shaft 72 are connected to a first connecting tube 23 integrally formed with a first arc lifting arm. The outer wall of the first connecting tube 23 is provided with a first limiting groove 24 and a second limiting groove 21. Both ends of the inner main shaft 71 are connected to a second connecting tube 53 integrally formed with a second arc lifting arm. The third lifting section 81 is matched with the first limiting groove 24, and the fourth lifting section 82 is matched with the second limiting groove 21.
[0038] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.
Claims
1. A cam-driven jacquard machine, characterized in that: The device includes an outer spindle (72) and an inner spindle (71) with inner and outer sleeves. The outer spindle (72) is connected to a first cam drive device at its shaft end, and the inner spindle (71) is connected to a second cam drive device at its shaft end. The first cam drive device includes a first arc lifting arm, with a first lifting section (84) and a second lifting section (83) at its two ends. The first lifting section (84) is connected to a first pull rod (10), and the second lifting section (83) is connected to a second pull rod (25). The first pull rod (10) is connected to one side of the first tool frame (30), and the second pull rod (25) is connected to... The second cutter frame (33) is located on one side; the second cam transmission device includes a second arc lifting arm, the two ends of which are a third lifting section (81) and a fourth lifting section (82), the third lifting section (81) is connected to a third pull rod (11), the fourth lifting section (82) is connected to a fourth pull rod (28), the third pull rod (11) is connected to the other side of the second cutter frame (33), and the fourth pull rod (28) is connected to the other side of the first cutter frame (30); the first cutter frame (30) is connected to the first cutter frame guide system; the second cutter frame (33) is connected to the second cutter frame guide system.
2. The cam-driven jacquard machine according to claim 1, characterized in that: The first blade frame guiding system includes a first guide arm (34), the first blade frame (30) is hinged in the middle of the first guide arm (34), one end of the first guide arm (34) is hinged to one end of the first guide rod (32), and the other end of the first guide arm (34) is hinged to one end of the second guide rod (27); the other end of the first guide rod (32) is hinged to the jacquard machine frame, and the other end of the second guide rod (27) is hinged to the jacquard machine frame; The second blade frame guiding system includes a second guide arm (29), the second guide arm (29) is hinged to the second blade frame (33) in the middle, one end of the second guide arm (29) is hinged to one end of the third guide rod (26), and the other end of the second guide arm (29) is hinged to one end of the fourth guide rod (31); the other end of the third guide rod (26) is hinged to the jacquard machine frame, and the other end of the fourth guide rod (31) is hinged to the jacquard machine frame; The second guide arm (29) is vertically arranged, and the third guide rod (26) and the fourth guide rod (31) are horizontally arranged; the first guide arm (34) is vertically arranged, and the second guide rod (27) and the first guide rod (32) are horizontally arranged; the third guide rod (26) and the first guide rod (32) are parallel to each other; the second guide rod (27) and the fourth guide rod (31) are parallel to each other.
3. The cam-driven jacquard machine according to claim 1, characterized in that: The first cam transmission device further includes a first cam arm (4) that is low at both ends and high in the middle. The first cam arm (4) is provided with a first roller (9) and a second roller at both ends. The movement trajectory of the first roller (9) is controlled by the first cam (20), and the movement trajectory of the second roller is controlled by the second cam (17). The second cam transmission device further includes a second cam arm (5) that is low at both ends and high in the middle. The second cam arm (5) is provided with a third roller (22) and a fourth roller (6) at both ends. The movement trajectory of the third roller (22) is controlled by the third cam (18), and the movement trajectory of the fourth roller is controlled by the fourth cam (7). The first cam arm (4) is connected to the outer main shaft (72). The second cam arm (5) is connected to the inner main shaft (71).
4. A cam-driven jacquard machine according to claim 3, characterized in that: The first cam (20), the second cam (17), the third cam (18), and the fourth cam (7) are connected to each other to form an integral structure and are connected to the drive shaft (8); the movement trajectories of the first roller (9) and the second roller are staggered; the movement trajectories of the third cam (18) and the fourth cam (7) are staggered.
5. A cam-driven jacquard machine according to claim 1, characterized in that: The first blade frame (30) includes two first connecting plates, and two or more first lifting blades (41) are installed between the two first connecting plates; the second blade frame (33) includes two second connecting plates, and two or more second lifting blades (40) are installed between the two second connecting plates.
6. A cam-driven jacquard machine according to claim 1, characterized in that: The second blade frame (33) has an upper component box (12) on its upper side, and two or more component supports (50) are arranged inside the upper component box (12). The upper edge of the upper component box (12) is inclined upward. The first blade frame (30) has a lower component box (19) on its lower side.
7. A cam-driven jacquard machine according to claim 1, characterized in that: When the first pull rod (10) moves downward, the second pull rod (25) moves upward, and at the same time the third pull rod (11) moves upward and the fourth pull rod (28) moves downward. When the first pull rod (10) moves upward, the second pull rod (25) moves downward, and at the same time the third pull rod (11) moves downward and the fourth pull rod (28) moves upward, driving the first cutter frame (30) and the second cutter frame (33) to move alternately up and down.
8. A cam-driven jacquard machine according to claim 3, characterized in that: When the first roller (9) moves downward, the second roller moves upward, while the third roller (22) moves upward and the fourth roller (6) moves downward; when the first roller (9) moves upward, the second roller moves downward, while the third roller (22) moves downward and the fourth roller (6) moves upward.
9. A cam-driven jacquard machine according to claim 1, characterized in that: The outer spindle (72) is connected to a first connecting tube (23) integrally formed with a first arc lifting arm at both ends. The outer wall of the first connecting tube (23) is provided with a first limiting groove (24) and a second limiting groove (21). The inner spindle (71) is connected to a second connecting tube (53) integrally formed with a second arc lifting arm at both ends. The third lifting section (81) cooperates with the first limiting groove (24), and the fourth lifting section (82) cooperates with the second limiting groove (21).