Cam transmission jacquard machine with guide system

Abstract

A cam transmission jacquard machine with a guide system comprises an outer main shaft and an inner main shaft which are sleeved inside and outside, the shaft end of the outer main shaft is connected with a first cam transmission device, the shaft end of the inner main shaft is connected with a second cam transmission device, and the first cam transmission device comprises a first arc lifting arm with the two ends low and the middle high. The two ends of the first arc lifting arm are connected with the first cutter frame through a first pull rod and connected with the second cutter frame through a second pull rod. The second cam transmission device comprises a second arc lifting arm with the two ends low and the middle high, the two ends of the second arc lifting arm are connected with the second cutter frame through third pull rods respectively, and a fourth pull rod is connected with the first cutter frame. The first cutter frame is connected with a first cutter frame guiding system, and the second cutter frame is connected with a second cutter frame guiding system. According to the cam transmission jacquard machine with the guide system, the outer main shaft and the inner main shaft are driven by the two cam transmission devices, and the two cutter frame guide systems are combined, so that the overall jacquard performance of the jacquard machine is improved, and the maintenance cost and time are effectively reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of jacquard machines, and in particular relates to a cam-driven jacquard machine with a guiding system. Background Art

[0002] Existing jacquard machines use an input shaft driven by continuous rotational motion and on which four eccentrics are mounted, each associated with a rod for controlling a rocker arm. The blade holder is suspended by respective short and long links on two rocker arms located on either side of the lifting group. Given the drive mechanism for the blade holder, they perform an inclined reciprocating motion and each of them requires a linear guide. This is usually achieved by means of a joint bearing connecting the blade to the blade holder, which therefore requires a lot of lubrication, which involves laborious maintenance that causes lubricant to splash onto the weaving area, as well as the replacement and maintenance of the joint bearing at a later stage. It is known to use a system for guiding the heald frame, in which 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 the first bolt and the second bolt and to the blade holder at a mobile hinge point. The complex movement of the third bolt makes it possible to ensure that the blade holder performs a vertical movement only when the mobile hinge point between the third bolt and the blade holder can overlap on the first fixed point. This overlap is disadvantageous in terms of compactness, especially when space must be made for the overlapping guide systems of the two blade holders. Generally speaking, the existing jacquard machines mainly have the problems of poor lifting stability of the blade holders and low operating speed. Summary of the invention

[0003] The invention provides a cam-driven jacquard machine with a simple structure, stable up-and-down movement of a knife holder, high lifting speed and a guiding system.

[0004] A cam-driven jacquard machine with a guiding system, comprising an outer spindle and an inner spindle coupled inside and outside, the outer spindle ends are connected to a first cam transmission device, the inner spindle ends are connected to a second cam transmission device, the first cam transmission device comprises a first arc lifting arm, the first arc lifting arm ends are respectively a first lifting section and a second lifting section, the first lifting section is connected to a first pull rod, the second lifting section is connected to a second pull rod, the first pull rod is connected to one side of a first knife frame, and the second pull rod is connected to one side of a second knife frame; the second cam transmission device comprises a second arc lifting arm, the second arc lifting arm ends are respectively a third lifting section and a fourth lifting section, the third lifting section is connected to a third pull rod, the fourth lifting section is connected to a fourth pull rod, the third pull rod is connected to the other side of the second knife frame, and the fourth pull rod is connected to the other side of the first knife frame; the first knife frame is connected to the first knife frame guiding system; the second knife frame is connected to the second knife frame guiding system; The first knife frame guiding system comprises a first guiding arm, the middle of the first guiding arm is hinged to the first knife frame, one end of the first guiding arm is hinged to one end of the first guiding rod, and the other end of the first guiding arm is hinged to one end of the second guiding rod; the other end of the first guiding rod is hinged to the jacquard machine frame, and the other end of the second guiding rod is hinged to the jacquard machine frame; The second knife frame guiding system comprises a second guiding arm, the middle of the second guiding arm is hinged to the second knife frame, one end of the second guiding arm is hinged to one end of the third guiding rod, and the other end of the second guiding arm is hinged to one end of the fourth guiding rod; the other end of the third guiding rod is hinged to the jacquard machine frame, and the other end of the fourth guiding rod is hinged to the jacquard machine frame; The second guide arm is arranged vertically, and the third guide rod and the fourth guide rod are arranged horizontally; the first guide arm is arranged vertically, and the second guide rod and the first guide rod are arranged horizontally; 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 inside and outside, the outer spindle is connected to the first cam transmission device, and the inner spindle is connected to the second cam transmission device, so that the first cam transmission device and the second cam transmission device are always in a coaxial state during the driving process, avoiding the problem of offset during high-speed movement, and the first pull rod is connected to one side of the first knife frame, the second pull rod is connected to one side of the second knife frame, the third pull rod is connected to the other side of the second knife frame, and the fourth pull rod is connected to the other side of the first knife frame, that is, the second knife frame is pulled up and down by the second pull rod and the third pull rod, and the first knife frame is The first pull rod and the fourth pull rod are pulled up and down, and the pulling force of the first pull rod and the fourth pull rod comes from the outer spindle and the inner spindle respectively, which improves the pulling force for the first knife frame. Similarly, the second knife frame is pulled up and down by the second pull rod and the third pull rod, and the pulling force of the second pull rod and the third pull rod comes from the outer spindle and the inner spindle respectively, which improves the pulling force for the second knife frame. The front and rear structures formed by the first lifting section and the second lifting section cooperate with the front and rear structures formed by the third lifting section and the fourth lifting section to form an interlaced structure to further improve the stability during the lifting process. The third guide rod of the first knife frame guide system and the second knife frame guide system are parallel to the first guide rod through the two guide systems, and the fourth guide rod is parallel to the second guide rod, which further improves the stability of the first knife frame and the second knife frame during the up and down lifting movement, so as to facilitate the realization of high-speed lifting movement.

[0005] The first cam transmission device also includes a first cam arm with low ends and high middle, and the first cam arm is provided with a first roller and a second roller at both ends, and the motion trajectory of the first roller is controlled by the first cam, and the motion trajectory of the second roller is controlled by the second cam; the second cam transmission device also includes a second cam arm with low ends and high middle, and the second cam arm is provided with a third roller and a fourth roller at both ends, and the motion trajectory of the third roller is controlled by the third cam, and the motion trajectory of the fourth roller is controlled by the fourth cam, and the first cam arm is connected to the outer spindle; the second cam arm is connected to the inner spindle. The motion trajectory of the first roller is controlled by the first cam, and the motion trajectory of the second roller is controlled by the second cam to form a set of kinematic pairs driven up and down, and the outer spindle provides up and down pulling forces to the second knife frame and the first knife frame at the same time, and the motion trajectory of the third roller is controlled by the third cam, and the motion trajectory of the fourth roller is controlled by the fourth cam to form a set of kinematic pairs driven up and down, and the inner spindle provides up and down pulling forces to the second knife frame and the first knife frame at the same time, and the inner spindle and the outer spindle provide driving forces to the second knife frame and the first knife frame in opposite directions.

[0006] The first cam, the second cam, the third cam and the fourth cam are interconnected to form an integrated structure and are connected to a driving shaft at the same time to improve the synchronization of the drive; the movement trajectories of the first roller and the second roller are staggered in height; the movement trajectories of the third cam and the fourth cam are staggered in height, so that the second knife frame and the first knife frame move alternately up and down.

[0007] The first knife frame includes two first connecting plates, and more than two first lifting knives are installed between the two first connecting plates to improve the integrity of the first lifting knives during movement; the second knife frame includes two second connecting plates, and more than two second lifting knives are installed between the two second connecting plates to improve the integrity of the second lifting knives during movement.

[0008] An upper component box is provided on the upper side of the second knife frame, and more than two component brackets are arranged in the upper component box, and the upper edge of the upper component box is arranged upwardly at an angle; a lower component box is provided on the lower side of the first knife frame. The upper edge of the upper component box is arranged upwardly at an angle, which improves the matching degree of the electronic components installed in the upper component box during the second knife lifting movement and the first knife lifting movement.

[0009] When the first pull rod moves downward, the second pull rod moves upward, and at the same time 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 at the same time the third pull rod moves downward and the fourth pull rod moves upward, driving the first knife frame and the second knife frame to move up and down alternately.

[0010] When the first roller moves downward, the second roller moves upward, and at the same time the third roller moves upward and the fourth roller moves downward; when the first roller moves upward, the second roller moves downward, and at the same time the third roller moves downward and the fourth roller moves upward, forming interactive driving performance for the first cam arm and the second cam arm.

[0011] Both ends of the outer spindle are connected to a first connecting tube integrally formed with a first arc lifting arm, and the outer wall of the first connecting tube is provided with a first limiting groove and a second limiting groove, and both ends of the inner spindle are connected to a second connecting tube integrally formed with a second arc lifting arm, and 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 lifting arm and the second connecting tube integrally formed with the second arc lifting arm improve the overall completion performance of the driving force of the outer spindle and the inner spindle.

[0012] The cam-driven jacquard machine with a guiding system of the present invention simultaneously and staggeredly drives two staggered cam transmission devices through an outer spindle and an inner spindle, and combines two staggered parallel knife frame guiding systems to improve the overall jacquard stability and speed of the jacquard machine and effectively reduce maintenance costs and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with the accompanying drawings: Figure 1 It is a schematic diagram of the three-dimensional structure of a cam-driven jacquard machine with a guiding system of the present invention; Figure 2 It is a partial three-dimensional structural schematic diagram of a cam-driven jacquard machine with a guiding system of the present invention; Figure 3 It is a partial three-dimensional structural schematic diagram of a cam-driven jacquard machine with a guiding system of the present invention; Figure 4 It is a schematic diagram of the three-dimensional installation structure of the first arc lifting arm and the second arc lifting arm in the present invention; Figure 5 It is a schematic diagram of the main structure of the first arc lifting arm and the second arc lifting arm in the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the connection between the outer spindle and the inner spindle in the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the first knife frame and the second knife frame in the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the upper component box and the lower component box in the present invention. Specific implementation plan

[0014] The following is combined with Figure 1-8 The specific implementation method further explains the technical solution of this patent in detail.

[0015] A cam-driven jacquard machine with a guiding system comprises an outer spindle 72 and an inner spindle 71 which are coupled inner and outer respectively, the shaft ends of the outer spindle 72 are connected to a first cam transmission device, the shaft ends of the inner spindle 71 are connected to a second cam transmission device, the first cam transmission device comprises a first arc lifting arm, the two ends of the first arc lifting arm are respectively a first lifting section 84 and a second lifting section 83, the first lifting section 84 is connected to a first pull rod 10, 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 knife frame 30, the second pull rod 25 is connected to one side of a second knife frame 33, when the first pull rod 10 drives one side of the first knife frame 30 to move upward, the second pull rod 25 drives one side of the second knife frame 33 to move downward, so that the first knife frame 30 and the second knife frame 33 move alternately up and down, and vice versa.

[0016] The second cam transmission device includes a second arc lifting arm, with two ends of the second arc lifting arm respectively being a third lifting section 81 and a fourth lifting section 82, the third lifting section 81 is connected to the third pull rod 11, the fourth lifting section 82 is connected to the fourth pull rod 28, the third pull rod 11 is connected to the other side of the second knife frame 33, and the fourth pull rod 28 is connected to the other side of the first knife frame 30, when the third pull rod 11 drives one side of the second knife frame 33 to move upward, the fourth pull rod 28 drives one side of the first knife frame 30 to move downward, so that the first knife frame 30 and the second knife frame 33 alternately move up and down, and vice versa.

[0017] 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 to increase the driving stability and improve the operating speed.

[0018] As a preferred structure, the first blade frame 30 is connected to a first blade frame guide system, and the second blade frame 33 is connected to a second blade frame guide system.

[0019] The first knife frame guide system includes a first guide arm 34, the first guide arm 34 is hinged to the first knife frame 30 in the middle, 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.

[0020] The second knife frame guiding system includes a second guiding arm 29, the second guiding arm 29 is hinged to the second knife frame 33 in the middle, one end of the second guiding arm 29 is hinged to one end of the third guiding rod 26, the other end of the second guiding arm 29 is hinged to one end of the fourth guiding rod 31, the other end of the third guiding rod 26 is hinged to the jacquard machine frame, and the other end of the fourth guiding rod 31 is hinged to the jacquard machine frame.

[0021] As a further technical structure, the second guide arm 29 is arranged vertically, and the third guide rod 26 and the fourth guide rod 31 are arranged horizontally. The first guide arm 34 is arranged vertically, and the second guide rod 27 and the first guide rod 32 are arranged horizontally. The third guide rod 26 and the first guide rod 32 are parallel to each other, and the second guide rod 27 and the fourth guide rod 31 are parallel to each other, so that the first knife frame and the second knife frame are always guided in a vertically parallel state during the vertical movement, thereby reducing wear.

[0022] As a preferred structure, the motion trajectories of the first roller 9 and the second roller are staggered in height, and the motion trajectories of the third cam 18 and the fourth cam 7 are staggered in height. The first cam transmission device also includes a first cam arm 4 with low ends and high in the middle, and the first roller 9 and the second roller are respectively arranged at the two ends of the first cam arm 4, and the motion trajectory of the first roller 9 is controlled by the first cam 20, and the motion trajectory of the second roller is controlled by the second cam 17. The second cam transmission device also includes a second cam arm 5 with low ends and high in the middle, and the third roller 22 and the fourth roller 6 are respectively arranged at the two ends of the second cam arm 5, and the motion trajectory of the third roller 22 is controlled by the third cam 18, and the motion trajectory of the fourth roller is controlled by the fourth cam 7. The first cam arm 4 is connected to the outer spindle 72, so that the relatively smooth driving force generated by the first roller 9 and the second roller is transmitted to the first cam transmission device and the outer spindle 72 to increase the driving stability, and the second cam arm 5 is connected to the inner spindle 71, so that the relatively smooth driving force generated by the third roller 22 and the fourth roller 6 is transmitted to the second cam transmission device and the outer spindle 72 to increase the driving stability.

[0023] In order to further improve the driving stability, 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 integrated structure, and are also connected to the driving shaft 8. The first knife frame 30 includes two first connecting plates, and two or more first knife lifting plates 41 are installed between the two first connecting plates. The second knife frame 33 includes two second connecting plates, and two or more second knife lifting plates 40 are installed between the two second connecting plates.

[0024] An upper component box 12 is provided on the upper side of the second knife frame 33. More than two component brackets 50 are arranged in the upper component box 12. 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 up and down movement of the first knife lifting 41 and the second knife lifting 40. A lower component box 19 is provided on the lower side of the first knife frame 30.

[0025] In order to further improve the stability of the movement, 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 knife frame 30 and the second knife frame 33 to move up and down alternately. When the first roller 9 moves downward, the second roller moves upward, and at the same time, 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, and at the same time, the third roller 22 moves downward, and the fourth roller 6 moves upward.

[0026] As a preferred structure, both ends of the outer main shaft 72 are connected to the first connecting tube 23 integrally formed with the first circular 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, and both ends of the inner main shaft 71 are connected to the second connecting tube 53 integrally formed with the second circular arc lifting arm, 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.

[0027] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A cam-driven jacquard machine with a guiding system, characterized in that: The invention comprises an outer spindle (72) and an inner spindle (71) which are connected to each other, the shaft ends of the outer spindle (72) are connected to a first cam transmission device, and the shaft ends of the inner spindle (71) are connected to a second cam transmission device, the first cam transmission device comprises a first arc lifting arm, the two ends of the first arc lifting arm are respectively a first lifting section (84) and a second lifting section (83), 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 knife frame (30), and the second pull rod (25) is connected to one side of the second knife frame (33); the second cam transmission device comprises a second circular arc lifting arm, the two ends of the second circular arc lifting arm are respectively a third lifting section (81) and a fourth lifting section (82), the third lifting section (81) is connected to the third pull rod (11), the fourth lifting section (82) is connected to the fourth pull rod (28), the third pull rod (11) is connected to the other side of the second knife frame (33), and the fourth pull rod (28) is connected to the other side of the first knife frame (30); the first knife frame (30) is connected to the first knife frame guide system; the second knife frame (33) is connected to the second knife frame guide system; The first knife frame guiding system comprises a first guiding arm (34), the first guiding arm (34) is hingedly connected to the first knife frame (30) in the middle, one end of the first guiding arm (34) is hingedly connected to one end of a first guiding rod (32), and the other end of the first guiding arm (34) is hingedly connected to one end of a second guiding rod (27); the other end of the first guiding rod (32) is hingedly connected to a jacquard machine frame, and the other end of the second guiding rod (27) is hingedly connected to the jacquard machine frame; The second knife frame guiding system comprises a second guiding arm (29), the middle of the second guiding arm (29) is hinged to the second knife frame (33), one end of the second guiding arm (29) is hinged to one end of the third guiding rod (26), and the other end of the second guiding arm (29) is hinged to one end of the fourth guiding rod (31); the other end of the third guiding rod (26) is hinged to the jacquard machine frame, and the other end of the fourth guiding rod (31) is hinged to the jacquard machine frame; The second guide arm (29) is arranged vertically, and the third guide rod (26) and the fourth guide rod (31) are arranged horizontally; the first guide arm (34) is arranged vertically, and the second guide rod (27) and the first guide rod (32) are arranged horizontally; the third guide rod (26) and the first guide rod (32) are parallel to each other; and the second guide rod (27) and the fourth guide rod (31) are parallel to each other.

2. A cam-driven jacquard machine with a guiding system according to claim 1, characterized in that: The first cam transmission device further comprises a first cam arm (4) with lower ends and a higher middle, a first roller (9) and a second roller being respectively provided at the two ends of the first cam arm (4), a movement trajectory of the first roller (9) being controlled by the first cam (20), and a movement trajectory of the second roller being controlled by the second cam (17); the second cam transmission device further comprises a second cam arm (5) with lower ends and a higher middle, a third roller (22) and a fourth roller (6) being respectively provided at the two ends of the second cam arm (5), a movement trajectory of the third roller (22) being controlled by the third cam (18), and a movement trajectory of the fourth roller being controlled by the fourth cam (7); the first cam arm (4) is connected to an outer main shaft (72); and the second cam arm (5) is connected to an inner main shaft (71).

3. The cam-driven jacquard machine with a guiding system according to claim 1, characterized in that: The first cam (20), the second cam (17), the third cam (18), and the fourth cam (7) are interconnected to form an integrated structure and are also connected to the drive shaft (8); the movement trajectories of the first roller (9) and the second roller are staggered in height; and the movement trajectories of the third cam (18) and the fourth cam (7) are staggered in height.

4. The cam-driven jacquard machine with a guiding system according to claim 1, characterized in that: The first knife frame (30) comprises two first connecting plates, between which at least two first lifting knives (41) are mounted; the second knife frame (33) comprises two second connecting plates, between which at least two second lifting knives (40) are mounted.

5. The cam-driven jacquard machine with a guiding system according to claim 1, characterized in that: An upper component box (12) is provided on the upper side of the second knife frame (33), and more than two component brackets (50) are arranged in the upper component box (12). The upper edge of the upper component box (12) is arranged to be inclined upward; and a lower component box (19) is provided on the lower side of the first knife frame (30).

6. A cam-driven jacquard machine with a guiding system 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 knife frame (30) and the second knife frame (33) to move up and down alternately.

7. A cam-driven jacquard machine with a guiding system according to claim 2, characterized in that: When the first roller (9) moves downward, the second roller moves upward, and at the same time 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, and at the same time the third roller (22) moves downward, and the fourth roller (6) moves upward.

8. The cam-driven jacquard machine with a guiding system according to claim 1, characterized in that: Both ends of the outer main shaft (72) are connected to a first connecting tube (23) integrally formed with a first arc lifting arm, and 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) cooperates with the first limiting groove (24), and the fourth lifting section (82) cooperates with the second limiting groove (21).

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