CN202099473U - Griffe transmission mechanism of electronic jacquard machine - Google Patents

Abstract

The utility model discloses a griffe transmission mechanism of an electronic jacquard machine, which comprises a griffe at the lower end of a rack, a plurality of lifting needle arms on the two sides of the rack for lifting the griffe, a plurality of connecting rods for connecting the lifting needle arms, and a transmission main shaft installed by fixing plates on the two sides of the upper end of the rack; a driving sprocket is arranged on the inner side of each fixing plate on the transmission main shaft, and a driving gear is arranged on the outer side of each fixing plate; the driving sprocket is connected with an eccentric driven sprocket through a chain, and the driving gear is meshed with an eccentric gear; an outer side crank coaxial with the eccentric driven sprocket is arranged on the outer side of each fixing plate; and an inner side crank coaxial with the eccentric gear is arranged on the inner side of each fixing plate. In the griffe transmission mechanism of the electronic jacquard machine disclosed by the utility model, the eccentric driven sprocket and the eccentric gear on the two sides of the rack are driven by one transmission main shaft, the outer side crank and the inner side crank are staggered by 180 degrees to lift and descend the four lifting needle arms connected with the weaving machine, and the griffe is driven to lift jacquard needles to do upward movement sequentially and synchronously, so as to form a scissor-shaped warp opening; the whole transmission mechanism has the advantages of simplicity in structure, genious design and stable running.

Description

An electronic jacquard knives transmission mechanism

technical field

The utility model relates to mechanical components of an electronic jacquard machine, in particular to a power transmission mechanism for lifting a knife in the electronic jacquard machine.

Background technique

In the field of textiles, fabrics are usually woven with warp and weft threads. On the loom, it is necessary to divide the warp into upper and lower layers and alternately change according to certain rules to form a channel for the weft to pass through, that is, an opening. After the weft is introduced into the opening, the two layers of warp alternate up and down according to the fabric weave to form a new Opening, repeated like this, just completes the weaving process of fabric. The warp formation of the warp opening is completed by the warp opening selection structure, which is the core step in textile technology. The warp opening selection structure must meet the needs of modern textile varieties diversification and long-term high-speed production, and should have the characteristics of simple structure, reliable performance, convenient adjustment and unified management. Small warp friction and tension requirements. This puts forward higher requirements on the quality of lifting the needle in the warp opening selection structure. In the existing electronic jacquard machine, the electromagnetic valve is used to swing the jacquard needle to be lifted, the connected thread, the steel wire heald with heald eye and the return spring to achieve the purpose of forming the warp opening, and at the same time, it has the above characteristics. The alternate lifting operation of the jacquard needles is completely driven by an independent transmission mechanism.

For example, the Chinese utility model patent whose authorized announcement number is CN201292432Y and whose invention name is "a double-cam needle-lifting structure of electronic jacquard machine" discloses a needle-lifting transmission mechanism, which uses a complex combination of multiple sets of levers, eccentric cams and connecting rods. The combination realizes the upward and downward movement of the inner needle raising arm and the outer needle raising arm. The structure of this transmission mechanism is too complicated, and the stability of the system needs to be improved. Other existing technologies still do not break through the technical problem that the transmission structure is too complicated.

Utility model content

In order to overcome the problem that the structure of the above transmission mechanism is too complicated, the utility model provides an electronic jacquard knife lifting mechanism with simple structure, easy processing and high stability. The specific technical scheme is as follows:

An electronic jacquard knife lifting mechanism, comprising a lifting knife at the lower end of a frame, a number of needle lifting arms on both sides of the frame for lifting the lifting knife, a plurality of connecting rods connecting the lifting arms, and fixing rods on both sides of the upper end of the frame. The drive shaft is fixedly installed on the plate; the drive shaft is equipped with a drive sprocket inside the fixed plate, and a drive gear is installed outside the fix plate; the drive sprocket is connected with an eccentric driven sprocket through a chain , the driving gear is meshed with an eccentric gear; an outer crank coaxial with the eccentric driven sprocket is provided outside the fixed plate, and an eccentric crank gear coaxial with the eccentric driven sprocket is provided inside the fixed plate. The inner crank with coaxial gears; the eccentric driven sprocket, the eccentric gear, the outer crank and the inner crank are respectively connected to the needle lifting arms on both sides of the frame through connecting rods.

Further, the drive sprocket, drive gear, eccentric driven sprocket, eccentric gear, outer crank and inner crank are all mounted on the fixed plate through shafts.

Further, the initial deflection angle difference between the eccentric gear and the coaxial inner crank is 180°; the initial deflection angle difference between the eccentric driven sprocket and the coaxial outer crank is 180°; the outer crank and The inside crank starts at the same deflection angle.

Further, the needle lifting arms are respectively arranged on both sides of the frame, and each side is divided into an outer needle raising arm and an inner needle raising arm.

Further, the eccentric gear and the outer crank are connected to the two ends of the outer needle raising arm; the eccentric driven sprocket and the inner crank are connected to the two ends of the inner needle raising arm.

Further, the outer needle raising arm on one side of the frame and the inner needle raising arm on the other side lift both ends of the same lifting knife.

When the transmission main shaft is connected with the loom and rotates, it will drive all the gears and sprockets to rotate synchronously, and the rotation of the eccentric gear, the eccentric driven sprocket and the crank will drive the crank to lift the needle lifting arm up and down; The initial deflection angle of the crank and the eccentric driven sprocket (or eccentric gear) differs by 180°, so the two ends of the needle lifting arm will move upward or downward in opposite steps, and the inner and outer needle lifting arms are misaligned, which can drive the lifting knife and jacquard The needles form a "scissors-like" warp opening.

The utility model electronic jacquard machine lifter transmission mechanism drives the eccentric driven sprockets and eccentric gears on both sides of the frame through a transmission main shaft, and the outer crank and inner crank displace 180° to lift or lower the four lifts connected with the loom. The needle arm and the jacquard needles are simultaneously lifted by the lifting knife to move upwards sequentially, forming a "scissors-like" warp opening. The entire transmission mechanism is simple in structure, ingenious in design, and stable in operation.

Description of drawings

Fig. 1 is a perspective view on the right side of the three-dimensional structure schematic diagram of the utility model electronic jacquard knife girder transmission mechanism.

Fig. 2 is a left direction view of the three-dimensional structure diagram of the utility model electronic jacquard knife girder transmission mechanism.

Detailed ways

The structure and working principle of the utility model electronic jacquard knife lifting drive will be further described below in conjunction with the accompanying drawings.

As shown in Figure 1 and Figure 2, an electronic jacquard machine lifting knife transmission mechanism includes the lifting knife at the lower end of the frame, that is, the first lifting knife 1 and the second lifting knife 2; four lifting knifes on both sides of the frame The lifting arms of the left outer lifting arm 3, the left inner lifting arm 4, the right inner lifting arm 5 and the right outer lifting arm 6. 8 connecting rods connecting the lifting arms, that is, the first A connecting rod 7 , a second connecting rod 8 , a third connecting rod 9 , a fourth connecting rod 10 , a fifth connecting rod 11 , a sixth connecting rod 12 , a seventh connecting rod 13 and an eighth connecting rod 14 . By the fixed plates on both sides of the frame upper end, i.e. the left fixed plate 15 and the right fixed plate 16, the transmission main shaft 17 is fixedly installed.

On the transmission main shaft 17, a left driving sprocket 18 is installed in the left fixed plate 15 inboard, and a right driving sprocket 19 is installed in the right fixed plate 16 inboard.

On the transmission main shaft 17, a left driving gear 20 is installed on the left side fixed plate 15 outside; a right side driving gear 21 is installed on the right side fixed plate 16 outside.

The left driving sprocket 18 is connected with the left side eccentric driven sprocket 23 by the left side chain 22, and the left side eccentric driven sprocket 23 is connected with an end of the left inner needle raising arm 4 by the 3rd connecting rod 9; The sprocket 19 is connected with the right eccentric driven sprocket 25 through the right chain 24, and the right eccentric driven sprocket 25 is connected with one end of the right inner needle raising arm 5 through the fifth connecting rod 11.

The left side driving gear 20 is meshed with a left side eccentric gear 26, and the left side eccentric gear 26 is connected to one end of the left outer needle arm 3 through the first connecting rod 7; the right side driving gear 21 is meshed with a right side eccentric gear 27, The right side eccentric gear 27 is connected to one end of the right side outer needle raising arm 6 through the eighth connecting rod 14 . A left outer crank 28 coaxial with the left eccentric driven sprocket 23 is provided outside the left fixed plate 15, and the initial deflection angles of the left eccentric driven sprocket 23 and the left outer crank 28 differ by 180°; The right side outside crank that is coaxial with the right side eccentric driven sprocket 25 is provided with on the right side fixed plate 16 outsides

29. The initial deflection angles of the right eccentric driven sprocket 25 and the right outer crank 29 are 180° different. Inside the left fixed plate 15, there is a left inner crank 30 coaxial with the left side eccentric gear 26, and the left side eccentric gear 26 and the left inner crank 30 have a difference of 180° in the initial deflection angle; A right inner crank 31 coaxial with the right eccentric gear 27 is provided, and the initial deflection angles of the right eccentric gear 27 and the right inner crank 31 differ by 180°.

The left outside crank 28 connects one end of the left outside needle arm 3 through the second connecting rod 8; the right outside crank 29 connects one end of the right outside needle arm 6 through the seventh connecting rod 13; the left inside crank 30 passes through The fourth connecting rod 10 is connected to one end of the left inner needle raising arm 4 ; the right inner crank 31 is connected to one end of the right inner needle raising arm 5 through the sixth connecting rod 12 .

The left driving sprocket 18, the left driving gear 20, the left eccentric driven sprocket 23, the left eccentric gear 26, the left outer crank 28 and the left inner crank 30 are all mounted on the left fixed plate 15 by shafts The right side driving sprocket 19, the right side driving gear 21, the right side eccentric driven sprocket 25, the right side eccentric gear 27, the right side outside crank 29 and the right side inside crank 31 are all installed on the right side fixed plate 16 by the shaft superior.

The initial deflection angles of the left outer crank 28 , left inner crank 30 , right outer crank 29 and right inner crank 31 are the same.

The left outer needle lifting arm 3 on the left side of the frame and the right inner needle lifting arm 5 on the right side of the frame lift the two ends of the first lifting knife 1, the left inner needle lifting arm 4 on the left side of the frame and the frame The right side outer needle arm 6 on the right side. Lift the two ends of the second lifting knife 2.

When the transmission main shaft 17 rotates, it will drive all the gears and sprockets to rotate synchronously, and the rotation of the eccentric gear, the eccentric driven sprocket and the crank will drive the crank to lift the needle lifting arm up and down; The initial deflection angle of the movable sprocket (or eccentric gear) differs by 180°, so the two ends of the needle lifting arm will move up or down in opposite steps. shape" warp opening.

The electronic jacquard knife lifting mechanism of the utility model is not limited to the diameter of the wheel and the connection method, all the gears and sprockets driven by a transmission spindle are misplaced to lift the jacquard needle and form the opening of the warp thread. Mechanisms all fall within the scope of protection claimed by the utility model.

Claims (6)

1. electronic jacquard machine transmission mechanism for griffe, some connecting rods of mentioning the needle arm of griffing, some connection needle arms that comprise the griffing of frame lower end, frame both sides and by the hard-wired transmission main shaft of fixed head of both sides, frame upper end; It is characterized in that: in described fixed head installed inside drive sprocket is arranged on the described transmission main shaft, driving gear is installed in the fixed head outside; Described drive sprocket is connected with the eccentric-driven sprocket wheel through chain, is engaged with eccentric gear on the described driving gear; Be provided with the outside crank with described eccentric-driven sprocket coaxiality in the described fixed head outside, be provided with the inboard crank coaxial with described eccentric gear in described fixed head inboard; Described eccentric-driven sprocket wheel, eccentric gear, outside crank and inboard crank are connected the needle arm of frame both sides respectively through connecting rod.

2. electronic jacquard machine transmission mechanism for griffe as claimed in claim 1 is characterized in that: described drive sprocket, driving gear, eccentric-driven sprocket wheel, eccentric gear, outside crank and inboard crank all are installed on the described fixed head through axle.

3. electronic jacquard machine transmission mechanism for griffe as claimed in claim 1 is characterized in that: described eccentric gear differs 180 ° with the coaxial initial deflection angle of inboard crank; Described eccentric-driven sprocket wheel differs 180 ° with the coaxial initial deflection angle of outside crank; Described outside crank is identical with the initial deflection angle of inboard crank.

4. electronic jacquard machine transmission mechanism for griffe as claimed in claim 1 is characterized in that: described needle arm is separately positioned on the both sides of frame, and each side is divided into outer needle arm and interior needle arm.

5. electronic jacquard machine transmission mechanism for griffe as claimed in claim 1 is characterized in that: described eccentric gear is connected the two ends of described outer needle arm with outside crank; Described eccentric-driven sprocket wheel is connected the two ends of described interior needle arm with inboard crank.

6. electronic jacquard machine transmission mechanism for griffe as claimed in claim 1 is characterized in that: the outer needle arm of described frame one side is mentioned identical two ends of griffing with the interior needle arm of opposite side.

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