CN102220668B - Transmission mechanism for griffs in electronic jacquard - Google Patents

Abstract

This invention discloses a knife-lifting transmission mechanism for an electronic jacquard machine, comprising a swing spindle fixed to the upper end of the frame; several sets of drive sprockets are fixedly installed on both sides of the frame on the swing spindle; each set of drive sprockets is formed by the joining of two fan-shaped sprockets, with chains connected to the two fan-shaped sprockets in opposite directions, and the other end of the chains connected to a needle-lifting arm; the needle-lifting arms driven by the inner drive sprocket on one side of the frame and the outer drive sprocket on the other side are connected to the two ends of the knife-lifting mechanism. The knife-lifting transmission mechanism of this invention drives four sets of drive sprockets to reciprocate through a swing spindle. Two sets of drive sprockets on one side of the frame, via chains and transition sprockets, lift two needle-lifting arms on the same side in opposite directions, causing them to move up and down in opposite directions, and simultaneously driving the knife-lifting mechanisms on both sides of the frame to lift the jacquard needles in sequence, forming a warp opening. The entire transmission mechanism is simple in structure, ingeniously designed, and operates stably.

Description

An electronic jacquard knives transmission mechanism

technical field

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

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. the

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. the

Contents of the invention

In order to overcome the problem that the structure of the above transmission mechanism is too complicated, the present invention 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 machine knife lifting transmission mechanism, including a swing main shaft fixed on the upper end of the frame; the swing main shaft is fixedly installed on both sides of the frame with several groups of driving sprockets, and each side of the driving sprocket is divided into dislocation installations. The inner driving sprocket and the outer driving sprocket; each group of driving sprockets is composed of two fan-shaped sprockets, and the two fan-shaped sprockets are connected with chains in opposite directions, and the other end of the chain is connected with the needle lifting arm; the frame The needle lifting arm driven by the inner driving sprocket on the left side and the outer driving sprocket on the right side respectively connects the two ends of the lifting knife through the link; Attach the lift arm.

Preferably, the drive sprocket is composed of two sector sprockets with different diameters. the

Further, the swing main shaft is fixedly installed on the frame through bearings. the

Further, the swinging main shaft is driven to reciprocate by the linkage mechanism of the loom, and drives the driving sprocket to lift and lower synchronously with the loom. the

Further, the chain controls the movement direction of each needle lifting arm through the transition sprockets in different serial methods. the

Further, the inner drive sprocket and the outer drive sprocket are set at a fixed angle as required. the

The drive mechanism of the electronic jacquard machine of the present invention drives four groups of driving sprockets to reciprocate through a swinging main shaft, and the two groups of driving sprockets on one side of the frame lift the two blocks on the same side in opposite directions through the chain and the transition sprocket. The needle lifting arm moves up and down in the opposite direction, and drives the lifting knives on both sides of the frame to simultaneously lift the jacquard needles and move upwards sequentially to form warp openings. The entire transmission mechanism has simple structure, ingenious design and stable operation. the

Description of drawings

Figure 1 is a schematic diagram of the front structure of the electronic jacquard knitting mechanism transmission mechanism of the invention. the

Figure 2 is a schematic diagram of the side structure of the electronic jacquard knife lifting mechanism of the present invention

Fig. 3 is a schematic diagram of the connection structure of a group of driving sprockets of the electronic jacquard machine's knife girder transmission mechanism according to the present invention. the

Detailed ways

The structure and working principle of the electronic jacquard knife girder drive of the present invention will be further described below in conjunction with the accompanying drawings. the

As shown in Fig. 1, a kind of electronic jacquard machine lifter transmission mechanism, comprises the swing main shaft 2 that is fixed on the upper end of frame 1, and a plurality of lifter 4 that lifts jacquard needle 3; There are four groups of driving sprockets fixedly installed. The driving sprocket on the left side of frame 1 is divided into the first inner driving sprocket 5 and the first outer driving sprocket 6 installed in a fixed angle misalignment; the right driving sprocket is divided into a fixed angle The second inner driving sprocket 7 and the second outer driving sprocket 8 installed in a misplaced position. the

Each group of driving sprockets is assembled by two sector sprockets of different sizes, and the two sector sprockets are respectively connected with chains in opposite directions. the

The first inner driving sprocket 5 and the second outer driving sprocket 8 on the other side are connected to the two ends of the same lifting knife 4 by the needle arm which is respectively driven by the chain;

The first outer driving sprocket 6 and the second inner driving sprocket 7 on the other side connect the two ends of the same lifting knife 11 with the connecting rod through the needle-lifting arm driven respectively by the chain. the

The swing main shaft 2 is fixedly installed on the frame 1 through the bearing 12 . the

The swing main shaft 2 is combined with the loom linkage mechanism to perform a reciprocating swing motion, which drives each driving sprocket and the loom to perform lifting and lowering motions synchronously. the

As shown in FIG. 2, the same components as those in FIG. 1 are marked with the same numerals. the

The first inner driving sprocket 5 on the same side of the frame 1 is spliced by two sector sprockets, and the two sector sprockets are respectively connected with the second chain 18-1 on the right and the second chain 18-2 on the left; and The two ends of the inner needle raising arm 10 are respectively connected by the second transition sprocket 14-3 on the right side and the second transition sprocket 14-4 on the left side. the

In the same way, the first outer driving sprocket 6 on the same side of the frame 1 is spliced by two fan-shaped sprockets, and the two fan-shaped sprockets are respectively connected to the first chain 9-1 on the right and the first chain 9-2 on the left. , and respectively connect the two ends of the outer needle raising arm 13 through the first transition sprocket 14-1 on the right side and the first transition sprocket 14-2 on the left side. the

The first inner driving sprocket 5 and the first outer outer driving sprocket 6 are fixedly mounted on the same swing main shaft 2 in a misplaced position. the

As shown in FIG. 3 , the components in the figure that are the same as in FIG. 1 and FIG. 2 are marked with the same numbers. the

The first outer driving sprocket 6 is assembled by two sector sprockets with different diameters. That is, the small sector sprocket wheel 6-1 with a smaller diameter and the large sector sprocket wheel 6-2 with a larger diameter are combined on a plane with the swing main shaft 2, and are connected with the first chain 9-1 on the right in the same counterclockwise direction. and the first chain on the left 9-2. The first chain 9-1 on the right is connected with the right link 19 through the first transition sprocket 14-1 on the right and lifts the right end of the outer needle arm 13; the first chain 9-2 on the left passes through the first The transition sprocket 14-2 is connected with the left link 18 and lifts the left end of the outer needle raising arm 13. the

When the swing main shaft 2 reciprocates through the transmission of the loom. The small sector sprocket wheel 6-1 and the large sector sprocket wheel 6-2 swing the first chain 9-1 on the right side and the first chain 9-2 on the left side clockwise at the same angular velocity. the

Because the diameters of the small sector sprocket 6-1 and the large sector sprocket 6-2 are different, the length of the chain lifted by the rotation of the small sector sprocket 6-1 is shorter than that of the sector sprocket 6-2, so the outer needle arm 13 The right end connected with the large fan-shaped sprocket-6-2 has a large lifting range, and the left end connected with the small fan-shaped sprocket 6-1 of the outer needle lifting arm 13 has a small lifting range, and the lifting knife hanging on the outer needle lifting arm 13 4 will be lifted sequentially from right to left, forming a clear opening in the shape of scissors for the warp. the

In the same way, the first inner driving sprocket 5 on the same side as the first outer driving sprocket 6 is installed on the swing main shaft 2, and the second chain 18-2 on the left side is connected to the first outer driving sprocket 6 in the opposite manner. , the second chain 18-1 on the right side. Simultaneously, when the oscillating main shaft 2 swings in the counterclockwise direction, the first internal driving sprocket 5 rotates at the same angular velocity, but it is synchronously putting down the second chain 18-2 and the second chain 18-1 on the right side, so, The inner lifting arm 10 connected with it will also rise and fall in the opposite direction of the outer lifting arm 13, ensuring that the outer lifting arm 13 and the inner lifting arm 10 are lifted and lowered at a staggered pace, and the respective hanging knives 4 drive the jacquard needles 3 It is always possible to form a scissors-shaped warp opening. the

The first inner driving sprocket 5 on one side of the frame and the second outer driving sprocket 8 on the other side respectively drive two needle lifting arms to connect the two ends of the same lifting knife 4; the first outer driving sprocket on one side of the frame 6 and the second inner driving sprocket 7 on the other side are respectively connected to the two ends of the same lifting knife 11 as two needle lifting arms driven by dry. Coordinated movements. the

The swing main shaft 2 is driven to reciprocate by the transmission mechanism of the loom, and the above-mentioned lifting knives are lifted to run alternately in the forward and reverse lifting modes. the

The electronic jacquard machine knife lift transmission mechanism of the present invention is not limited to the structure and connection mode of the chain and the driving sprocket, all the wheels, belts, ropes, chains, etc. driven by the swinging main shaft drive the lifting needle arm at different speeds to lift the jacquard needle. The electronic jacquard girder transmission mechanism for the purpose of warp thread opening all falls within the scope of protection claimed by the present invention. the

Claims (6)

1. An electronic jacquard machine knife lift transmission mechanism, including a swinging main shaft fixed on the upper end of the frame; it is characterized in that: the swinging main shaft is fixedly installed with several groups of driving sprockets on both sides of the frame, and each side is actively The sprockets are divided into inner driving sprockets and outer driving sprockets installed in dislocation; each set of driving sprockets is composed of two sector sprockets, and the two sector sprockets are connected with chains in opposite directions, and the other end of the chain is connected with a The needle lifting arm; the needle lifting arm driven by the left inner driving sprocket and the right outer driving sprocket respectively connects the two ends of the lifting knife through the linkage; the right inner driving sprocket and the left outer driving sprocket of the frame The needle-lifting arms driven respectively are connected to both ends of the knife-lifting knife through linkages; the inner and outer driving sprockets on the same side of the frame are respectively connected to the needle-lifting arms through chains in opposite directions. 2. The electric jacquard machine lifting mechanism according to claim 1, characterized in that: said drive sprocket is composed of two fan-shaped sprockets with different diameters. 3. The knife girder transmission mechanism of the electronic jacquard machine according to claim 1, characterized in that: said oscillating main shaft is fixedly installed on the frame through bearings. 4. The lifting knife transmission mechanism of electronic jacquard machine according to claim 1, characterized in that: said oscillating main shaft is driven to reciprocate by the loom linkage mechanism, and drives the driving sprocket to lift and lower synchronously with the loom. 5. The knife lifting mechanism of electronic jacquard machine according to claim 1, characterized in that: said chain controls the direction of each needle lifting arm through a transitional sprocket in different series. 6 . The electronic jacquard knife lifting mechanism according to claim 1 , characterized in that: the inner drive sprocket and the outer drive sprocket are set at a fixed angle.

Images