Jacquard drive mechanism and working method

Abstract

The invention relates to a jacquard drive mechanism and working method, and belongs to the field of textile machinery. The invention comprises a long push-pull rod connecting assembly, a short push-pull rod connecting assembly, a long knife group, a short knife group, a left swing shaft, a right swing shaft, a left knife swing arm and a right knife swing arm. The left and right knife swing arms are respectively installed on the left and right swing shafts. The two ends of the long knife group are respectively connected with the left and right knife swing arms. The two ends of the short knife group are respectively connected with the left and right knife swing arms. One end of the long push-pull rod connecting assembly is connected with the left swing shaft. One end of the short push-pull rod connecting assembly is connected with the right swing shaft. The left end of the long knife group is connected with the left end of the left knife swing arm. The right end of the long knife group is connected with the right end of the right knife swing arm. The left end of the short knife group is connected with the right end of the left knife swing arm. The right end of the short knife group is connected with the left end of the right knife swing arm.

Description

TECHNICAL FIELD

[0001] The present application relates to a jacquard drive mechanism and working method, belonging to the field of textile machinery. BACKGROUND

[0002] The jacquard machine needs to drive the transmission mechanism to realize the lifting action of the long and short knife groups through the driving device during work. At present, most driving devices realize the lifting action of the long and short knife groups through eccentric wheels and connecting rod mechanisms. In view of this, a jacquard drive mechanism is disclosed in the patent document with application number 201610049132.2. In view of this, a high-speed jacquard opening device and a jacquard machine provided with the device are disclosed in the patent document with application number 201210336182.0. The above-mentioned jacquard machine in the prior art needs to be driven by eccentric wheels and connecting rod mechanisms during work. Since the eccentric wheels and connecting rod mechanisms need to be installed on the wallboard, a large space is required for the installation equipment during installation. The driving motion precision of the eccentric wheels and connecting rod mechanisms is low, and it is difficult to achieve accurate trajectory. SUMMARY

[0003] The present application aims to overcome the above-mentioned deficiencies in the prior art and provide a jacquard drive mechanism and working method with a reasonable structure design.

[0004] The technical solution adopted by the present application to solve the above-mentioned problems is as follows: the jacquard drive mechanism, which has the following structural characteristics: it comprises a long push-pull rod connecting assembly, a short push-pull rod connecting assembly, a long knife group, a short knife group, a left swing shaft, a right swing shaft, a left knife swing arm, and a right knife swing arm. The left and right knife swing arms are respectively installed on the left and right swing shafts. The two ends of the long knife group are respectively connected with the left and right knife swing arms. The two ends of the short knife group are respectively connected with the left and right knife swing arms. One end of the long push-pull rod connecting assembly is connected with the right swing shaft, and one end of the short push-pull rod connecting assembly is connected with the left swing shaft.

[0005] Further, the left end of the long knife group is connected with the left end of the left knife swing arm, the right end of the long knife group is connected with the right end of the right knife swing arm, the left end of the short knife group is connected with the right end of the left knife swing arm, and the right end of the short knife group is connected with the left end of the right knife swing arm.

[0006] Further, the other ends of the long push-pull rod connecting assembly and the short push-pull rod connecting assembly are respectively connected with the driving device.

[0007] Further, the long push-pull rod connecting assembly comprises a long push-pull rod and a long push-pull rod swing shaft swing rod, one end of the long push-pull rod is connected with one end of the long push-pull rod swing shaft swing rod, the other end of the long push-pull rod swing shaft swing rod is connected with the right swing shaft, the short push-pull rod connecting assembly comprises a short push-pull rod and a short push-pull rod swing shaft swing rod, one end of the short push-pull rod is connected with one end of the short push-pull rod swing shaft swing rod, the other end of the short push-pull rod swing shaft swing rod is connected with the left swing shaft.

[0008] Further, the other end of the long push-pull rod is connected with the long push-pull rod joint of the long push-pull rod swing rod assembly in the driving device, and the other end of the short push-pull rod is connected with the short push-pull rod joint of the short push-pull rod swing rod assembly in the driving device.

[0009] Further, the long push-pull rod connecting assembly comprises a long push-pull rod and a long push-pull rod swing shaft swing rod, one end of the long push-pull rod is connected with one end of the long push-pull rod swing shaft swing rod, the other end of the long push-pull rod swing shaft swing rod is connected with the right swing shaft, the short push-pull rod connecting assembly comprises a short push-pull rod and a short push-pull rod swing shaft swing rod, one end of the short push-pull rod is connected with one end of the short push-pull rod swing shaft swing rod, the other end of the short push-pull rod swing shaft swing rod is connected with the left swing shaft.

[0010] Further, the left long push-pull rod connecting assembly comprises a long push-pull rod and a long push-pull rod swing shaft swing rod, one end of the long push-pull rod is connected with one end of the long push-pull rod swing shaft swing rod, the other end of the long push-pull rod swing shaft swing rod is connected with the right swing shaft, the short push-pull rod connecting assembly comprises a short push-pull rod and a short push-pull rod swing shaft swing rod, one end of the short push-pull rod is connected with one end of the short push-pull rod swing shaft swing rod, the other end of the short push-pull rod swing shaft swing rod is connected with the left swing shaft.

[0011] Further, the left swing shaft and the right swing shaft are respectively installed at the front girder and the rear girder.

[0012] Further, the driving device comprises a long push-pull rod driving device and a short push-pull rod driving device, the long push-pull rod driving device cooperates with the short push-pull rod driving device; the long push-pull rod driving device comprises a long push-pull rod cam assembly, a long push-pull rod swing frame assembly, an outer swing shaft sleeve and a long push-pull rod swing rod assembly, the long push-pull rod cam assembly is consistent with the long push-pull rod swing frame assembly, the two ends of the outer swing shaft sleeve are respectively connected with the long push-pull rod swing frame assembly and the long push-pull rod swing rod assembly, the short push-pull rod driving device comprises a short push-pull rod cam assembly, a short push-pull rod swing frame assembly, an inner swing shaft and a short push-pull rod swing rod assembly, the short push-pull rod cam assembly is consistent with the short push-pull rod swing frame assembly, the two ends of the inner swing shaft are respectively connected with the short push-pull rod swing frame assembly and the short push-pull rod swing rod assembly, and the outer swing shaft sleeve is sleeved outside the inner swing shaft.

[0013] Further, the long push-pull rod cam assembly and the short push-pull rod cam assembly are installed on the cam shaft.

[0014] Further, the long push-pull rod cam assembly comprises a first cam and a second cam, the first cam and the second cam constitute a long push-pull rod conjugate cam, and the first cam and the second cam are both installed on a cam shaft; the short push-pull rod cam assembly comprises a third cam and a fourth cam, the third cam and the fourth cam constitute a short push-pull rod conjugate cam, and the third cam and the fourth cam are both installed on a cam shaft.

[0015] Further, the long push-pull rod swing frame assembly comprises a first roller, a second roller and a long push-pull rod swing frame, the long push-pull rod swing frame is connected with one end of an outer swing shaft sleeve, the first roller and the second roller are both installed on the long push-pull rod swing frame; the short push-pull rod swing frame assembly comprises a third roller, a fourth roller and a short push-pull rod swing frame, the short push-pull rod swing frame is connected with one end of an inner swing shaft, and the third roller and the fourth roller are both installed on the short push-pull rod swing frame.

[0016] Further, the first roller and the second roller are installed on the long push-pull rod swing frame through a fourth roller pin and a third roller pin, respectively; and the third roller and the fourth roller are installed on the short push-pull rod swing frame through a first roller pin and a second roller pin, respectively.

[0017] Further, the first roller and the second roller are matched with the first cam and the second cam in the long push-pull rod cam assembly, respectively; and the third roller and the fourth roller are matched with the fourth cam and the third cam in the short push-pull rod cam assembly, respectively.

[0018] Further, the long push-pull rod swing lever assembly comprises a long push-pull rod joint head and a long push-pull rod swing lever, the other end of the outer swing shaft sleeve is connected with one end of the long push-pull rod swing lever, and the other end of the long push-pull rod swing lever is connected with the long push-pull rod joint head; the short push-pull rod swing lever assembly comprises a short push-pull rod joint head and a short push-pull rod swing lever, the other end of the inner swing shaft is connected with one end of the short push-pull rod swing lever, and the other end of the short push-pull rod swing lever is connected with the short push-pull rod joint head.

[0019] Further, the long push-pull rod joint head and the long push-pull rod swing lever, and the short push-pull rod joint head and the short push-pull rod swing lever are connected through a joint head pin.

[0020] Further, another technical purpose of the present application is to provide a working method of the transmission mechanism of the jacquard machine.

[0021] The above technical purpose of the present application is realized through the following technical scheme.

[0022] The application relates to a working method of a jacquard machine transmission mechanism, and has the characteristics that the working method is as follows: a camshaft drives a long push-pull rod cam assembly and a short push-pull rod cam assembly to rotate; during the rotation of the camshaft, a No.1 cam is matched with a No.1 roller, a No.2 cam is matched with a No.2 roller, a No.3 cam is matched with a No.4 roller, and a No.4 cam is matched with a No.3 roller;

[0023] The matching of the No.1 cam and the No.1 roller enables a long push-pull rod swing frame to swing, and the swing of the long push-pull rod swing frame drives an outer swing shaft sleeve and a long push-pull rod swing lever to swing; the matching of the No.2 cam and the No.2 roller enables the long push-pull rod swing frame to swing, and the swing of the long push-pull rod swing frame drives the outer swing shaft sleeve and the long push-pull rod swing lever to swing; one rotation of the camshaft drives the long push-pull rod swing lever assembly to swing back and forth once;

[0024] The matching of the No.3 cam and the No.4 roller enables a short push-pull rod swing frame to swing, and the swing of the short push-pull rod swing frame drives an inner swing shaft and a short push-pull rod swing lever to swing; the matching of the No.4 cam and the No.3 roller enables the short push-pull rod swing frame to swing, and the swing of the short push-pull rod swing frame drives the inner swing shaft and the short push-pull rod swing lever to swing; one rotation of the camshaft drives the short push-pull rod swing lever assembly to swing back and forth once;

[0025] The long push-pull rod is pushed and pulled by a long push-pull rod joint head, the long push-pull rod swing shaft lever drives a right swing shaft to swing, the right swing shaft enables a right cutter swing arm to swing on the right swing shaft, and the swing of the right cutter swing arm drives a right long cutter connecting rod and a right short cutter connecting rod to move;

[0026] The short push-pull rod is pushed and pulled by a short push-pull rod joint head, the short push-pull rod swing shaft lever drives a left swing shaft to swing, the left swing shaft enables a left cutter swing arm to swing on the left swing shaft, and the swing of the left cutter swing arm drives a left long cutter connecting rod and a left short cutter connecting rod to move;

[0027] The long cutter is further driven by the left long cutter connecting rod and the right long cutter connecting rod, and the short cutter is further driven by the left short cutter connecting rod and the right short cutter connecting rod.

[0028] Compared with the prior art, the jacquard machine transmission mechanism has the following advantages: the jacquard machine transmission mechanism is driven by an intermittent driving device during work, the intermittent driving device adopts a long push-pull rod cam assembly and a short push-pull rod cam assembly (i.e. two sets of conjugate cams) to realize the lifting action of a long cutter group and a short cutter group; since the jacquard machine transmission mechanism is driven by the conjugate cams, a wall plate is not needed, so that the installation height of the whole equipment can be reduced; since the conjugate cams have the advantage of small size, the size of the whole equipment can be reduced, the installation space of the equipment is saved, the transmission precision is improved, the movement is stable, and faults are not prone to occur, so that the equipment operation stability and reliability are improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] Fig. 1 is a structural schematic diagram of a driving device of an embodiment of the present application.

[0030] Fig. 2 is a three-dimensional structural schematic diagram of a jacquard transmission mechanism of an embodiment of the present application.

[0031] Fig. 3 is a top view structural schematic diagram of a jacquard transmission mechanism of an embodiment of the present application.

[0032] In the figure: No. 1 cam 1, No. 2 cam 2, No. 1 roller 3, No. 2 roller 4, long push-pull rod swing frame 5, No. 3 cam 6, No. 4 cam 7, cam shaft 8, No. 3 roller 9, No. 1 roller pin 10, No. 4 roller 11, No. 2 roller pin 12, short push-pull rod swing frame 13, inner swing shaft 14, No. 3 roller pin 15, No. 4 roller pin 16, outer swing shaft sleeve 17, long push-pull rod joint head 18, long push-pull rod swing lever 19, short push-pull rod swing lever 20, short push-pull rod joint head 21, joint head pin 22, long push-pull rod 23, short push-pull rod 24, short push-pull rod swing shaft swing lever 25, left swing shaft 26, right short knife lever 27, long push-pull rod swing shaft swing lever 28, right knife swing arm 29, right long knife lever 30, lever pin 31, right swing shaft 32, short knife 33, long knife 34, left short knife lever 35, left long knife lever 36, left knife swing arm 37, front beam 38, rear beam 39. DETAILED DESCRIPTION

[0033] The present application will be further described below in conjunction with the drawings and by way of examples, which are intended to explain the present application but not to limit the present application to the following examples.

[0034] Example

[0035] Reference Figs. 1 to 3 It is to be understood that the structures, proportions, sizes, etc. shown in the drawings attached to the present specification are merely used to understand and read the content disclosed by the present specification for those skilled in the art, and are not used to limit the defined conditions under which the present application can be implemented, and therefore do not have technical significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. Meanwhile, the terms such as "up", "down", "left", "right", "middle", and "one" used in the present specification are merely for the convenience of clear description, and are not used to limit the scope of the present application, and the change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the scope of the present application.

[0036] The jacquard transmission mechanism in the embodiment comprises a long push-pull rod connecting assembly, a short push-pull rod connecting assembly, a long knife group, a short knife group, a left swing shaft 26, a right swing shaft 32, a left knife swing arm 37 and a right knife swing arm 29. The left swing shaft 26 and the right swing shaft 32 are respectively installed at the front beam 38 and the rear beam 39.

[0037] The left knife swing arm 37 and the right knife swing arm 29 in the embodiment are respectively installed on the left swing shaft 26 and the right swing shaft 32. The two ends of the long knife group are respectively connected with the left knife swing arm 37 and the right knife swing arm 29, that is, the left end of the long knife group is connected with the left end of the left knife swing arm 37 through the left long knife connecting rod 36, the right end of the long knife group is connected with the right end of the right knife swing arm 29 through the right long knife connecting rod 30, the two ends of the short knife group are respectively connected with the left knife swing arm 37 and the right knife swing arm 29, that is, the left end of the short knife group is connected with the right end of the left knife swing arm 37 through the left short knife connecting rod 35, the right end of the short knife group is connected with the left end of the right knife swing arm 29 through the right short knife connecting rod 27, one end of the long push-pull rod connecting assembly is connected with the right swing shaft 32, one end of the short push-pull rod connecting assembly is connected with the left swing shaft 26, and the other ends of the long push-pull rod connecting assembly and the short push-pull rod connecting assembly are both connected with the driving device.

[0038] The long push-pull rod connecting assembly in the embodiment comprises a long push-pull rod 23 and a long push-pull rod swing shaft swing rod 28. One end of the long push-pull rod 23 is connected with one end of the long push-pull rod swing shaft swing rod 28, the other end of the long push-pull rod swing shaft swing rod 28 is connected with the right swing shaft 32, the other end of the long push-pull rod 23 is connected with the long push-pull rod joint head 18 of the long push-pull rod swing rod assembly in the driving device, the short push-pull rod connecting assembly comprises a short push-pull rod 24 and a short push-pull rod swing shaft swing rod 25. One end of the short push-pull rod 24 is connected with one end of the short push-pull rod swing shaft swing rod 25, the other end of the short push-pull rod swing shaft swing rod 25 is connected with the left swing shaft 26, and the other end of the short push-pull rod 24 is connected with the short push-pull rod joint head 21 of the short push-pull rod swing rod assembly in the driving device.

[0039] The long sickle group in the embodiment comprises a long sickle 34, a left long sickle connecting rod 36 and a right long sickle connecting rod 30, the left and right ends of the long sickle 34 are connected with the left long sickle connecting rod 36 and the right long sickle connecting rod 30 respectively, the left long sickle connecting rod 36 and the right long sickle connecting rod 30 are connected with the left end of a left sickle swing arm 37 and the right end of a right sickle swing arm 29 respectively, the short sickle group comprises a short sickle 33, a left short sickle connecting rod 35 and a right short sickle connecting rod 27, the left and right ends of the short sickle 33 are connected with the left short sickle connecting rod 35 and the right short sickle connecting rod 27 respectively, the left short sickle connecting rod 35 and the right short sickle connecting rod 27 are connected with the right end of the left sickle swing arm 37 and the left end of the right sickle swing arm 29 respectively, the left sickle swing arm 37 is connected with the left long sickle connecting rod 36, the left short sickle connecting rod 35 through a connecting rod pin 31, and the right sickle swing arm 29 is connected with the right long sickle connecting rod 30, the right short sickle connecting rod 27 through the connecting rod pin 31.

[0040] The driving device in the embodiment comprises a long push-pull rod driving device and a short push-pull rod driving device, the long push-pull rod driving device cooperates with the short push-pull rod driving device; the long push-pull rod driving device comprises a long push-pull rod cam assembly, a long push-pull rod swing frame assembly, an outer swing shaft sleeve 17 and a long push-pull rod swing lever assembly, the long push-pull rod cam assembly is consistent with the long push-pull rod swing frame assembly, the two ends of the outer swing shaft sleeve 17 are connected with the long push-pull rod swing frame assembly and the long push-pull rod swing lever assembly respectively, the short push-pull rod driving device comprises a short push-pull rod cam assembly, a short push-pull rod swing frame assembly, an inner swing shaft 14 and a short push-pull rod swing lever assembly, the short push-pull rod cam assembly is consistent with the short push-pull rod swing frame assembly, the two ends of the inner swing shaft 14 are connected with the short push-pull rod swing frame assembly and the short push-pull rod swing lever assembly respectively, the outer swing shaft sleeve 17 is sleeved outside the inner swing shaft 14, and the long push-pull rod cam assembly and the short push-pull rod cam assembly are both installed on a cam shaft 8.

[0041] The long push-pull rod cam assembly in the embodiment comprises a No. 1 cam 1 and a No. 2 cam 2, the No. 1 cam 1 and the No. 2 cam 2 constitute a long push-pull rod conjugate cam, and the No. 1 cam 1 and the No. 2 cam 2 are both installed on the cam shaft 8, the short push-pull rod cam assembly comprises a No. 3 cam 6 and a No. 4 cam 7, the No. 3 cam 6 and the No. 4 cam 7 constitute a short push-pull rod conjugate cam, and the No. 3 cam 6 and the No. 4 cam 7 are both installed on the cam shaft 8.

[0042] The long push-pull rod swing frame assembly in the embodiment comprises a first roller 3, a second roller 4 and a long push-pull rod swing frame 5, the long push-pull rod swing frame 5 is connected with one end of the outer swing shaft sleeve 17, the first roller 3 and the second roller 4 are respectively installed on the long push-pull rod swing frame 5 through a fourth roller pin 16 and a third roller pin 15, the first roller 3 and the second roller 4 are respectively matched with a first cam 1 and a second cam 2 in the long push-pull rod cam assembly, the short push-pull rod swing frame assembly comprises a third roller 9, a fourth roller 11 and a short push-pull rod swing frame 13, the short push-pull rod swing frame 13 is connected with one end of the inner swing shaft 14, the third roller 9 and the fourth roller 11 are respectively installed on the short push-pull rod swing frame 13 through a first roller pin 10 and a second roller pin 12, the third roller 9 and the fourth roller 11 are respectively matched with a fourth cam 7 and a third cam 6 in the short push-pull rod cam assembly.

[0043] The long push-pull rod swing frame assembly in the embodiment comprises a first roller 3, a second roller 4 and a long push-pull rod swing frame 5, the long push-pull rod swing frame 5 is connected with one end of the outer swing shaft sleeve 17, the first roller 3 and the second roller 4 are respectively installed on the long push-pull rod swing frame 5 through a fourth roller pin 16 and a third roller pin 15, the first roller 3 and the second roller 4 are respectively matched with a first cam 1 and a second cam 2 in the long push-pull rod cam assembly, the short push-pull rod swing frame assembly comprises a third roller 9, a fourth roller 11 and a short push-pull rod swing frame 13, the short push-pull rod swing frame 13 is connected with one end of the inner swing shaft 14, the third roller 9 and the fourth roller 11 are respectively installed on the short push-pull rod swing frame 13 through a first roller pin 10 and a second roller pin 12, the third roller 9 and the fourth roller 11 are respectively matched with a fourth cam 7 and a third cam 6 in the short push-pull rod cam assembly.

[0044] Specifically, the transmission mechanism is driven by the intermittent driving device when working, the long push-pull rod cam assembly and the short push-pull rod cam assembly are driven to rotate by the cam shaft 8, that is, the cam shaft 8 can make the first cam 1 matched with the first roller 3, the second cam 2 matched with the second roller 4, the third cam 6 matched with the fourth roller 11 and the fourth cam 7 matched with the third roller 9 during the rotation process; the swing directions of the long push-pull rod swing frame assembly and the short push-pull rod swing frame assembly are opposite when working.

[0045] For long push-pull rod driving device, since the first roller 3, the second roller 4 are installed on the long push-pull rod swing frame 5, the long push-pull rod swing frame 5 is connected with the outer swing shaft sleeve 17, the outer swing shaft sleeve 17 is connected with the long push-pull rod swing lever 19, the long push-pull rod swing lever 19 is connected with the long push-pull rod joint head 18, the long push-pull rod joint head 18 is connected with the long cutter group; therefore the first cam 1 is consistent with the first roller 3, so that the long push-pull rod swing frame 5 swings in one direction, through the swing of the long push-pull rod swing frame 5, the outer swing shaft sleeve 17 and the long push-pull rod swing lever 19 can swing in one direction; the second cam 2 is consistent with the second roller 4, so that the long push-pull rod swing frame 5 swings in the other direction, through the swing of the long push-pull rod swing frame 5, the outer swing shaft sleeve 17 and the long push-pull rod swing lever 19 can swing in the other direction, thereby the intermittent driving of the long cutter group can be realized; one of the first cam 1 and the second cam 2 is the main cam, and the other is the return cam; in addition, it should be noted that the first cam 1 and the first roller 3, and the second cam 2 and the second roller 4 are always in contact, the swing control of the first roller 3 and the second roller 4 can be realized by designing the curve trajectory of the first cam 1 and the second cam 2.

[0046] For short push-pull rod driving device, since the third roller 9 and the fourth roller 11 are installed on the short push-pull rod swing frame 13, the short push-pull rod swing frame 13 is connected with the inner swing shaft 14, the inner swing shaft 14 is connected with the short push-pull rod swing lever 20, the short push-pull rod swing lever 20 is connected with the short push-pull rod joint head 21, the short push-pull rod joint head 21 is connected with the short cutter group; therefore the third cam 6 is consistent with the fourth roller 11, so that the short push-pull rod swing frame 13 swings in one direction, through the swing of the short push-pull rod swing frame 13, the inner swing shaft 14 and the short push-pull rod swing lever 20 can swing in one direction; the fourth cam 7 is consistent with the third roller 9, so that the short push-pull rod swing frame 13 swings in the other direction, through the swing of the short push-pull rod swing frame 13, the inner swing shaft 14 and the short push-pull rod swing lever 20 can swing in the other direction, thereby the intermittent driving of the short cutter group can be realized; one of the third cam 6 and the fourth cam 7 is the main cam, and the other is the return cam; in addition, it should be noted that the third cam 6 and the fourth roller 11, and the fourth cam 7 and the third roller 9 are always in contact, the swing control of the fourth roller 11 and the third roller 9 can be realized by designing the curve trajectory of the third cam 6 and the fourth cam 7.

[0047] The long pull rod 23 is pushed and pulled by the long pull rod joint 18, so that the long pull rod swing shaft swing lever 28 drives the right swing shaft 32 to swing, and the right swing shaft 32 can make the right cutter swing arm 29 swing on the right swing shaft 32, and the swing of the right cutter swing arm 29 can drive the right long cutter connecting rod 30 and the right short cutter connecting rod 27 to move; the short pull rod 24 is pushed and pulled by the short pull rod joint 21, so that the short pull rod swing shaft swing lever 25 drives the left swing shaft 26 to swing, and the left swing shaft 26 can make the left cutter swing arm 37 swing on the left swing shaft 26, and the swing of the left cutter swing arm 37 can drive the left long cutter connecting rod 36 and the left short cutter connecting rod 35 to move; and then the long cutter 34 can be driven to rise and fall by the left long cutter connecting rod 36 and the right long cutter connecting rod 30, and the short cutter 33 can be driven to rise and fall by the left short cutter connecting rod 35 and the right short cutter connecting rod 27.

[0048] That is, the left and right ends of the long cutter 34 in all long cutter groups are respectively connected with the outer sides of the left cutter swing arm 37 and the right cutter swing arm 29 through the left long cutter connecting rod 36 and the right long cutter connecting rod 30, and the left and right ends of the short cutter 33 in all short cutter groups are respectively connected with the inner sides of the left cutter swing arm 37 and the right cutter swing arm 29 through the left short cutter connecting rod 35 and the right short cutter connecting rod 27; the rising and falling of the long cutter group and the short cutter group are staggered, that is, when the long cutter group rises, the short cutter group falls, and when the long cutter group falls, the short cutter group rises.

[0049] The number of long cutter groups and short cutter groups is equal, and one long cutter group, one short cutter group, one left cutter swing arm 37 and one right cutter swing arm 29 can constitute one cutter device, and each transmission mechanism can include multiple cutter devices, and eight cutter devices are taken as an example for description, as shown in Fig. 3 .

[0050] The eight cutter devices (the reference signs A-H in the following drawings represent the number of cutter devices, and do not represent specific parts) are respectively a first cutter device A, a second cutter device B, a third cutter device C, a fourth cutter device D, a fifth cutter device E, a sixth cutter device F, a seventh cutter device G and an eighth cutter device H, wherein the first cutter device A includes a first long cutter group A1 and a first short cutter group A2, the second cutter device B includes a second long cutter group B1 and a second short cutter group B2, the third cutter device C includes a third long cutter group C1 and a third short cutter group C2, the fourth cutter device D includes a fourth long cutter group D1 and a fourth short cutter group D2, the fifth cutter device E includes a fifth long cutter group E1 and a fifth short cutter group E2, the sixth cutter device F includes a sixth long cutter group F1 and a sixth short cutter group F2, the seventh cutter device G includes a seventh long cutter group G1 and a seventh short cutter group G2, and the eighth cutter device H includes an eighth long cutter group H1 and an eighth short cutter group H2.

[0051] In addition, it should be noted that the specific embodiments described in the specification, the shape of the components, the name taken, etc. can be different, the above described in the specification is only an example of the structure of the present application. Any equivalent changes or simple changes made in accordance with the structure, features and principles described in the patent concept of the present application are included in the protection scope of the present application. Those skilled in the art can make various modifications or supplements to the described specific embodiments or use similar ways to replace, as long as they do not deviate from the structure of the present application or exceed the scope defined by the present claims, which shall belong to the protection scope of the present application.

Claims

1. A transmission mechanism for a jacquard machine, characterized in that: The assembly includes a long push-pull rod connecting assembly, a short push-pull rod connecting assembly, a long lifting knife assembly, a short lifting knife assembly, a left swing shaft (26), a right swing shaft (32), a left lifting knife swing arm (37), and a right lifting knife swing arm (29). The left lifting knife swing arm (37) and the right lifting knife swing arm (29) are respectively mounted on the left swing shaft (26) and the right swing shaft (32). The two ends of the long lifting knife assembly are respectively connected to the left lifting knife swing arm (37) and the right lifting knife swing arm (29). The left end of the long lifting knife assembly is connected to the left end of the left lifting knife swing arm (37), and the right end of the long lifting knife assembly is connected to the left end of the left lifting knife swing arm (37). The short knife assembly is connected to the right end of the right knife-lifting arm (29), and the two ends of the short knife assembly are respectively connected to the left knife-lifting arm (37) and the right knife-lifting arm (29). The left end of the short knife assembly is connected to the right end of the left knife-lifting arm (37), and the right end of the short knife assembly is connected to the left end of the right knife-lifting arm (29). One end of the long push-pull rod connecting assembly is connected to the right swing shaft (32), and one end of the short push-pull rod connecting assembly is connected to the left swing shaft (26). The other ends of the long push-pull rod connecting assembly and the short push-pull rod connecting assembly are both connected to the driving device. The driving device includes a long push-pull rod driving device and a short push-pull rod driving device, and the long push-pull rod driving device cooperates with the short push-pull rod driving device. The long push-pull rod drive device includes a long push-pull rod cam assembly, a long push-pull rod swing frame assembly, an outer swing bushing (17), and a long push-pull rod swing arm assembly. The long push-pull rod cam assembly matches the long push-pull rod swing frame assembly. The two ends of the outer swing bushing (17) are respectively connected to the long push-pull rod swing frame assembly and the long push-pull rod swing arm assembly. The short push-pull rod drive device includes a short push-pull rod cam assembly, a short push-pull rod swing frame assembly, an inner swing shaft (14), and a short push-pull rod swing arm assembly. The short push-pull rod cam assembly matches the short push-pull rod swing frame assembly. The two ends of the inner swing shaft (14) are respectively connected to the short push-pull rod swing frame assembly and the short push-pull rod swing arm assembly. The outer swing bushing (17) is fitted outside the inner swing shaft (14). The long push-pull rod cam assembly includes a first cam (1) and a second cam (2), which together form a long push-pull rod conjugate cam, and both the first cam (1) and the second cam (2) are mounted on a camshaft (8). The short push-pull rod cam assembly includes a third cam (6) and a fourth cam (7), which together form a short push-pull rod conjugate cam, and both the third cam (6) and the fourth cam (7) are mounted on a camshaft (8). The long push-pull rod swing frame assembly includes a first roller (3), a second roller (4) and a long push-pull rod swing frame (5). The long push-pull rod swing frame (5) is connected to one end of the outer swing shaft sleeve (17). The first roller (3) and the second roller (4) are both installed on the long push-pull rod swing frame (5). The short push-pull rod swing frame assembly includes a third roller (9), a fourth roller (11) and a short push-pull rod swing frame (13). The short push-pull rod swing frame (13) is connected to one end of the inner swing shaft (14). The third roller (9) and the fourth roller (11) are both installed on the short push-pull rod swing frame (13). The first cam (1) and the first roller (3), and the second cam (2) and the second roller (4) are always in contact. The third cam (6) and the fourth roller (11), and the fourth cam (7) and the third roller (9) are always in contact. The long push-pull rod swing arm assembly includes a long push-pull rod joint (18) and a long push-pull rod swing arm (19). The other end of the outer swing bushing (17) is connected to one end of the long push-pull rod swing arm (19), and the other end of the long push-pull rod swing arm (19) is connected to the long push-pull rod joint (18). The short push-pull rod swing arm assembly includes a short push-pull rod joint (21) and a short push-pull rod swing arm (20). The other end of the inner swing shaft (14) is connected to one end of the short push-pull rod swing arm (20), and the other end of the short push-pull rod swing arm (20) is connected to the short push-pull rod joint (21).

2. The jacquard machine transmission mechanism according to claim 1, characterized in that: The long push-pull rod connecting assembly includes a long push-pull rod (23) and a long push-pull rod swing shaft (28). One end of the long push-pull rod (23) is connected to one end of the long push-pull rod swing shaft (28), and the other end of the long push-pull rod swing shaft (28) is connected to the right swing shaft (32). The short push-pull rod connecting assembly includes a short push-pull rod (24) and a short push-pull rod swing shaft (25). One end of the short push-pull rod (24) is connected to one end of the short push-pull rod swing shaft (25), and the other end of the short push-pull rod swing shaft (25) is connected to the left swing shaft (26).

3. The jacquard machine transmission mechanism according to claim 2, characterized in that: The other end of the long push-pull rod (23) is connected to the long push-pull rod joint (18) of the long push-pull rod swing arm assembly in the drive device, and the other end of the short push-pull rod (24) is connected to the short push-pull rod joint (21) of the short push-pull rod swing arm assembly in the drive device.

4. The jacquard machine transmission mechanism according to claim 3, characterized in that: The long lifting knife assembly includes a long lifting knife (34), a left long lifting knife connecting rod (36), and a right long lifting knife connecting rod (30). The left and right ends of the long lifting knife (34) are connected to the left long lifting knife connecting rod (36) and the right long lifting knife connecting rod (30), respectively. The left long lifting knife connecting rod (36) and the right long lifting knife connecting rod (30) are connected to the left end of the left lifting knife swing arm (37) and the right end of the right lifting knife swing arm (29), respectively. The short lifting knife assembly includes a short lifting knife (33), a left short lifting knife connecting rod (35), and a right short lifting knife connecting rod (27). The left and right ends of the short lifting knife (33) are connected to the left short lifting knife connecting rod (35) and the right short lifting knife connecting rod (27), respectively. The left short lifting knife connecting rod (35) and the right short lifting knife connecting rod (27) are connected to the right end of the left lifting knife swing arm (37) and the left end of the right lifting knife swing arm (29), respectively.

5. The jacquard machine transmission mechanism according to claim 4, characterized in that: The two ends of the left swing shaft (26) and the right swing shaft (32) are respectively installed on the front beam (38) and the rear beam (39).

6. A method for operating the transmission mechanism of a jacquard machine according to claim 5, characterized in that: The working method is as follows: the long push-pull rod cam assembly and the short push-pull rod cam assembly are driven to rotate by the camshaft (8). During the rotation, the camshaft (8) can make the first cam (1) match the first roller (3), the second cam (2) match the second roller (4), the third cam (6) match the fourth roller (11), and the fourth cam (7) match the third roller (9). Cam (1) engages with roller (3) to make the long push-pull rod swing frame (5) swing. The swing of the long push-pull rod swing frame (5) can drive the outer swing bushing (17) and the long push-pull rod swing arm (19) to swing. Cam (2) engages with roller (4) to make the long push-pull rod swing frame (5) swing. The swing of the long push-pull rod swing frame (5) can drive the outer swing bushing (17) and the long push-pull rod swing arm (19) to swing. When the camshaft (8) rotates once, the long push-pull rod swing arm assembly swings back and forth once. Cam No. 3 (6) engages with roller No. 4 (11), which allows the short push-pull rod swing frame (13) to swing. The swing of the short push-pull rod swing frame (13) can drive the inner swing shaft (14) and the short push-pull rod swing arm (20) to swing in unison. Cam No. 4 (7) engages with roller No. 3 (9), which allows the short push-pull rod swing frame (13) to swing. The swing of the short push-pull rod swing frame (13) can drive the inner swing shaft (14) and the short push-pull rod swing arm (20) to swing in unison. When the camshaft (8) rotates one revolution, the short push-pull rod swing arm assembly swings back and forth once. By pushing and pulling the long push-pull rod (23) through the long push-pull rod joint (18), the long push-pull rod swing shaft (28) drives the right swing shaft (32) to swing. The right swing shaft (32) allows the right knife lifting arm (29) to swing on the right swing shaft (32). The swing of the right knife lifting arm (29) can drive the right long knife lifting link (30) and the right short knife lifting link (27) to move. By pushing and pulling the short push-pull rod (24) through the short push-pull rod joint (21), the short push-pull rod swing shaft (25) drives the left swing shaft (26) to swing. The left swing shaft (26) allows the left knife lifting arm (37) to swing on the left swing shaft (26). The swing of the left knife lifting arm (37) can drive the left long knife lifting connecting rod (36) and the left short knife lifting connecting rod (35) to move. The long lifting knife (34) can be driven by the left long lifting knife link (36) and the right long lifting knife link (30), and the short lifting knife (33) can be driven by the left short lifting knife link (35) and the right short lifting knife link (27).

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