CN101476195B - Weft insertion driving device for extra-wide rapier loom - Google Patents

Abstract

The invention provides a rapier loom weft insertion driving device with extra width which includes a fork shape connecting rod, the fork connecting rod connects with a rotary arm and a cross joint respectively, the cross joint connects with a machine frame box through a bearing; two ends of a H shape connecting rod connects with the cross joint and a sector gear through a needle bearing, and connects with a gear on a rapier shaft through a two-stage gear, the rapier shaft connects with the machine frame box through the bearing, a connecting center O25 of the cross joint and the H shape connecting rod, a connecting point O22 of the cross joint and the fork shape connecting rod locate on the same side of the cross joint and the fork shape connecting rod relative to the rotary shaft line, and an formed included angle alpha is an obtuse angle, an included angle beta is an sharp angle. The device has advantages of simple structure, reliable, convenient for use and realizing wide breadth range.

Description

Weft insertion driving device for extra-wide rapier loom

technical field

The invention relates to a weft insertion driving device used on a loom, which belongs to a transmission mechanism of a textile machine.

Background technique

The mechanism shown in Figures 1 and 2 is a common technology at present, which is used in many looms. The specific mechanism is: a fork-shaped connecting rod 12 is connected to the rotating arm 11 through a needle bearing, It is connected with the ten-byte 13, wherein the fork connecting rod 12 is fixedly connected with the outer ring of the tapered roller bearing, the ten-byte 13 is fixedly connected with the inner ring of the tapered roller bearing, and the ten-byte 13 is connected with the tapered roller bearing through the The frame box is connected, and the two ends of the H-shaped connecting rod 14 are respectively connected with the ten-piece 13 and the sector gear 15 through needle bearings. Mesh, pass sword gear shaft 16 to link to each other with box body frame by bearing.

The rotating arm 11 rotates around the rotation center axis _O11 for a full circle, drives the fork-shaped connecting rod 12 to perform spherical motion around _O14 , makes relative rotation around _O13 , and drives the ten-piece 13 to rotate around _O14 on a fixed axis. The connecting rod 14 drives the sector gear 15 to swing around a fixed axis at O ₁₇ , and drives the sword transmission gear shaft 16 to swing back and forth around O ₁₈ through the meshing of the gears, thereby driving the sword transmission wheel, the sword belt, and the sword head to move, realizing the rapier loom Weft insertion drive.

The connection point center O ₁₆ between the H-shaped connecting rod 14 and the sector gear can move along the arc groove on the sector gear 15 to achieve the effect of adjusting the width of the door.

The position shown in FIG. 1 is a limit position of the mechanism, and the rotating arm 11 reaches another limit position as shown in FIG. 2 after turning 180° around the rotation center axis O ₁₁ . After the rotating arm 1 continues to rotate through 180° around the central axis of rotation O ₁₁ , it returns to the position shown in FIG. 1 .

The mechanism shown in Figure 1 has a first-level space linkage mechanism, which can realize the function of converting the whole circular motion into a reciprocating swing. There is a first-level planar four-bar linkage mechanism in the middle to realize the adjustment function of the reciprocating stroke. The last level is gear amplification. Mechanism to realize the enlargement function of the reciprocating stroke, the maximum width of the rapier loom using this mechanism can only be 360cm.

There are also domestic weft insertion systems of other rapier looms that can achieve a door width of more than 360cm to 460cm, but it uses a conjugate cam mechanism to convert the entire circular motion into a reciprocating motion, and the planar four-bar linkage mechanism realizes the adjustment of the reciprocating stroke , the two-stage gear transmission realizes the enlargement of the reciprocating stroke; there are also four-bar linkage mechanism weft insertion in China to realize the weft insertion drive of extra-wide width, but three-stage gear transmission is used in the gear amplification mechanism, so Institutionally relatively complex.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned shortcomings, and provide a weft insertion drive device for extra-wide rapier looms with simple structure, reliability, easy use and wide width range.

The object of the present invention is achieved through the following technical solutions, the device includes a fork-shaped connecting rod, the fork-shaped connecting rod is respectively connected with a rotating arm and a ten-joint, and the ten-joint is connected with the frame box through a bearing The two ends of an H-shaped connecting rod are respectively connected to the ten-shaped gear and the sector gear through needle bearings, and the sector gear is connected to the frame through needle bearings, and is connected to the gear on the transmission shaft through a two-stage gear transmission. The sword passing shaft is connected with the box frame through bearings.

The connection center O ₅ of the deca and the H-shaped connecting rod, and the connection point O ₂ of the deca and the fork connecting rod are located at the same position as the relative rotation axis O ₃ O ₃ ′ of the deca and the fork. side, and the angle α formed is an obtuse angle, while the angle β is an acute angle.

The ten-byte connected sector gear meshes with the transition pinion to form a first-stage gear transmission; the transition pinion is coaxially fixed with the transition large gear and is connected to the box frame through bearings, and the transition large gear is connected to the transmission sword The gears on the shaft mesh and constitute a two-stage gear transmission.

The ten-piece is connected to the fork-shaped connecting rod through the tapered roller bearing, the fork-shaped connecting rod is fixedly connected to the inner ring of the tapered roller bearing, and the ten-piece is fixedly connected to the outer ring of the tapered roller bearing.

In terms of the transmission principle, the present invention adds a first-level gear amplification technology compared with the technology shown in Figures 1 and 2, and adopts a first-level space linkage mechanism to realize the function of converting the entire circular motion into a reciprocating swing. The connecting rod mechanism realizes the adjustment function of the size of the reciprocating stroke. Finally, a two-stage gear amplification mechanism is used to realize the enlargement of the reciprocating stroke. weft drive.

Compared with other technologies, the present invention realizes fewer weft insertion kinematic pairs of the same width rapier loom, especially less high kinematic pairs, which is of great benefit in controlling the movement overshoot of the rapier head. The present invention can achieve a wide range of door widths, better inheritance than the prior art shown in Figures 1 and 2, the volume of the mechanism is basically the same, the positions of each axis are basically the same, and the adjustment method of the stroke when shrinking is also the same. The original sword-passing box model and blanks can also be used, which can greatly save development costs.

Description of drawings

Fig. 1 is a schematic diagram of the structure and principle of the prior art.

Fig. 2 is a schematic diagram of another state structure principle in the prior art.

Fig. 3 is a schematic diagram of the structure principle of the present invention.

Fig. 4 is a schematic diagram of another state structure principle of the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings: As shown in Figures 3 and 4, the present invention mainly includes a fork-shaped connecting rod 22, which is connected with the rotating arm 21 through a needle bearing and is rolled by a tapered surface. The sub-bearing is connected with the ten-byte 28, wherein the fork-shaped connecting rod 22 is fixedly connected with the inner ring of the tapered roller bearing, and the ten-byte 28 is fixedly connected with the outer ring of the tapered roller bearing; the ten-byte 28 passes through the tapered roller bearing The bearing is connected to the frame box, the two ends of the H-shaped connecting rod 23 are respectively connected to the ten-piece 28 and the sector gear 24 through needle bearings, and the sector gear 24 is connected to the frame through needle bearings and meshes with the transition pinion 26; Transition pinion 26 is coaxially fixedly connected with transition bull gear 25 and is connected with casing frame by bearing, and transition bull gear 25 is meshed with the gear on the transmission sword shaft 27, and transmission sword shaft 27 links to each other with casing frame by bearing.

The connection center O ₂₅ of the ten-point 28 and the H-shaped connecting rod 23 according to the present invention, the connection point O 22 between the ten-point 28 and the fork-shaped connecting rod ₂₂ is located at the relative rotation axis O of the ten-point and the fork-shaped connecting rod ₂₃ , and the included angle α is an obtuse angle, while the included angle β is an acute angle.

The present invention is provided with a transition pinion 26 and transition large gear 25 between the sector gear 24 and the transmission shaft 27, the transition pinion 26 meshes with the sector gear 24, the transition large gear 25 meshes with the gear on the transmission shaft 27, The transition bull gear 25 is fixedly connected with the transition pinion gear 26 .

The fork-shaped connecting rod 22 of the present invention is connected with the ten-piece 28 through a tapered roller bearing, and is characterized in that the fork-shaped connecting rod 22 is fixedly connected with the inner ring of the tapered roller bearing, and the ten-piece 28 is connected with the tapered roller bearing. The outer ring of the sub-bearing is fixed.

The working process of the present invention is: the rotating arm 21 rotates around the rotation center O ₂₁ for a full circle, drives the fork-shaped connecting rod 22 to make a spherical motion around the O ₂₄ , makes relative rotation around the O ₂₃ , and drives the ten-piece 28 to make a fixed rotation around the O ₂₄ The shaft rotates, the H-shaped connecting rod 3 drives the sector gear 24 to swing around O ₂₇ as a fixed axis, and the transition pinion 26, the transition gear 25 and the gears on the transmission shaft 27 drive the transmission shaft 27 to swing back and forth around O ₂₉ , thus driving the movement of the sword wheel, sword belt and sword head. Realize the weft insertion drive of the rapier loom.

The connection point center O ₂₆ between the H-shaped connecting rod 23 and the sector gear can move along the arc groove on the sector gear 24 to achieve the effect of adjusting the door width.

The position shown in FIG. 3 is a limit position of the mechanism, and the rotating arm 21 reaches another limit position as shown in FIG. 4 after turning 180° around the rotation center axis _O11 . After the rotating arm 1 continues to rotate through 180° around the rotating central axis O ₁₁ , it returns to the position shown in FIG. 3 .

Claims (3)

1. extra wide breadth rapier loom weft insertion driving device, it is characterized in that this device includes a forked link (22), this forked link (22) is connected with a turning arm (21) by needle bearing, save (28) by a conical surface roller bearing and a cross and be connected, cross joint (23) is connected with the frame casing by bearing; The two ends of one H shape connecting rod (23) link to each other with sector gear (24) with cross joint (28) by needle bearing respectively, and sector gear (24) links to each other with frame by needle bearing, and link to each other with gear on passing sword axle (27) by the secondary gear transmission, biography sword axle (27) links to each other with rack cabinet by bearing; Described cross joint (28) is positioned at the same side that relatively rotates axis that cross saves (28) and forked link (22) with the tie point that is connected center, cross joint (28) and forked link (22) of H shape connecting rod (23), and the angle α that forms is the obtuse angle, and angle β is an acute angle.

2. extra wide breadth rapier loom weft insertion driving device according to claim 1 is characterized in that sector gear (24) and transition pinion (26) engagement and the gear drive of formation one-level that described cross joint (28) links to each other; Transition pinion (26) and transition gear wheel (25) be coaxial to be connected and to be connected with rack cabinet by bearing, and transition gear wheel (25) with pass the gears engaged on the sword axle (27) and constitute the secondary gear transmission.

3. extra wide breadth rapier loom weft insertion driving device according to claim 2, it is characterized in that described cross joint (28) is connected with forked link (22) by conical surface roller bearing, forked link (22) is connected with conical surface roller bearing inner ring, and cross joint (28) is connected with conical surface roller bearing outer ring.

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