CN101418491A - Rapier weft inserting apparatus for three-dimensional loom - Google Patents

Abstract

The invention relates to a rapier weft insertion device for a three-dimensional loom, comprising a rapier bracket and a rapier guide rail, the rapier guide rail is fixedly connected to the rapier bracket, a rapier is arranged on the rapier guide rail, and the rapier is wound on a rapier wheel The upper side moves back and forth along the rapier guide rail, and a cam mechanism is arranged below the rapier bracket, and the cam mechanism controls the rapier bracket to move up and down along the bracket guide rail. The rapier wheel is connected with the bushing through a bevel gear transmission mechanism, and the spline The shaft is matched with the shaft sleeve, and the lower end of the splined shaft is connected with the crank rocker mechanism through the bevel gear transmission mechanism, and the crank rocker mechanism controls the back and forth motion of the rapier. The beneficial effects of the present invention are: (1) the interlayer weft insertion work of the three-dimensional loom can be completed through this device, the interweaving of the three-dimensional fabric is deeper, and the structural stability of the three-dimensional fabric is improved; (2) the cam can be changed to adapt to different layers The production of the three-dimensional fabric with the interval is good, and the flexibility is good; (3) the structure is simple, the operation, installation and maintenance are convenient, and it is easy to popularize and apply.

Description

Three-dimensional loom rapier weft insertion device

technical field

The invention belongs to a special textile mechanical device, in particular to a three-dimensional loom rapier weft insertion device.

Background technique

In the current era of pursuing high efficiency, energy saving and environmental protection, the disadvantages of high energy consumption, low efficiency and high pollution of some traditional materials have gradually emerged. Three-dimensional textile composite materials not only have the characteristics of lightness, thinness and high strength, but also have the characteristics of high heat resistance and fire resistance, high dimensional stability, high chemical resistance, high filtration function, etc., which can replace some traditional metal materials and ceramic materials. In aerospace, aviation and military fields, and gradually expand to transportation, automobile industry, shipbuilding, sporting goods, medical and health and other fields.

For the production of three-dimensional textile composites, the three-dimensional fabric as a reinforcing phase is the key. Compared with flat fabrics, three-dimensional fabrics have Z-direction yarns in addition to X-direction and Y-direction warp and weft threads. The traditional three-dimensional fabric is woven, and the weaving efficiency is relatively low, and the degree of interlayer bonding is not high, and the mechanical properties of the composite material need to be improved. To realize the mechanized production of three-dimensional fabrics, three-dimensional looms must be used for weaving, and the weft insertion mechanism between layers of three-dimensional looms is a key component. The current weft insertion technology has multiple rapier weft insertion mechanisms, multiple motor-driven yarn carrier weft insertion mechanisms, and a mechanism that uses embossed healds to introduce oblique yarns and a rotatable rapier delivery shuttle type weft insertion mechanism. Literature reports. However, these mechanisms have complex structures, high costs, and complicated installation and maintenance.

Contents of the invention

The problem to be solved by the present invention is to propose a three-dimensional loom rapier weft insertion device for the above-mentioned prior art, which has the characteristics of simple structure, low cost, and convenient operation, installation and maintenance.

The solution adopted by the present invention to solve the above problems is: a three-dimensional loom rapier weft insertion device, which is characterized in that it includes a rapier bracket, a rapier guide rail, and the rapier guide rail is fixedly connected with the rapier bracket, and the rapier guide rail is provided with There is a rapier, and the rapier is wound on the rapier wheel and moves back and forth along the rapier guide rail. A cam mechanism is arranged under the rapier bracket, and the cam mechanism controls the rapier bracket to move up and down along the bracket guide rail. The rapier wheel passes through the cone The gear transmission mechanism is connected with the shaft sleeve, and the spline shaft is matched with the shaft sleeve. The lower end of the spline shaft is connected with the crank rocker mechanism through the bevel gear transmission mechanism, and the crank rocker mechanism controls the back and forth motion of the rapier.

According to the above scheme, the cam mechanism includes a detachable cam, which is in contact with the rapier bracket, and every time the rapier completes a plane weft insertion action, the detachable cam will drive the rapier bracket to rise by one yarn layer , and then stay for a period of time, the detachable cam drives the rapier support to rise a yarn layer.

According to the above scheme, in order to reduce the friction between the detachable cam and the rapier bracket, the cam mechanism also includes a roller, which is in contact with the detachable cam and the rapier bracket, and the central axis of the roller is fixed on the rapier under the bracket.

According to the above scheme, the detachable cam is divided into six stages, which are respectively 10a, 10b, 10c, 10d, 10e, 10f and the transition surface between each stage, and each stage completes the introduction of a yarn layer. Weft action, starting from level 10a, each level corresponds to a central angle of 15°, and the transition surface between them corresponds to a central angle of 30°. When it rises to level 10f, the weft insertion action at the top level is completed, and then returns to the bottom On the bottom layer, start a new round of weft insertion from level 10a.

According to the above scheme, the crank-rocker mechanism includes a sector gear as the rocker, a circular gear as the crank, the sector gear is connected with the circular gear through a connecting rod, and the swing of the sector gear drives the circular gear connected to it to continuously rotate clockwise. And counterclockwise rotation, the rotary motion is transmitted to the spline shaft through the bevel gear transmission mechanism, and converted into clockwise and counterclockwise rotation of the spline shaft.

The invention can complete the weft insertion work of the three-dimensional loom, and its main functional features include: (1) interlayer weft insertion of the three-dimensional loom;

(2) It can adapt to the weft insertion of three-dimensional fabrics with different layer spacing.

The beneficial effects of the present invention are:

(1) This device can complete the interlayer weft insertion work of the three-dimensional loom, make the interweaving of the three-dimensional fabric deeper, and improve the structural stability of the three-dimensional fabric;

(2) The device can adapt to the production of three-dimensional fabrics with different layer spacing by changing the cam, and has good flexibility;

(3) The device has a simple structure, convenient operation, installation and maintenance, and is easy to popularize and apply.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the three-dimensional loom rapier weft insertion device of the present invention;

The structural representation of the cam mechanism of Fig. 2 Fig. 1;

Fig. 3 is the structural representation of crank rocker mechanism;

Fig. 4 is a structural schematic diagram of the cooperation between the spline shaft and the shaft sleeve.

Detailed ways

The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but it cannot be regarded as a limitation of the present invention.

The present invention adopts mechanical design method to design, as shown in Fig. 1, three-dimensional loom rapier weft insertion device mainly includes rapier guide rail 1, rapier 2, rapier wheel 3, bevel gear transmission mechanism 4, spline shaft 6 , shaft sleeve 5, bevel gear transmission mechanism 7, crank rocker mechanism 8, rapier bracket 9, cam mechanism 10, wherein cam mechanism 10 controls the up and down movement of rapier bracket 9 and rapier guide rail 1, and crank rocker mechanism 8 controls The reciprocating movement of the rapier 2, the spline shaft 6 and its axle sleeve 5 cooperate to form a mechanism that combines the cam mechanism 10 and the crank rocker mechanism 8 to coordinate the motion of the whole mechanism.

The overall structure connection of the present invention is introduced below, as shown in Figure 1, the rapier guide rail 1 is fixedly connected with the rapier bracket 9, the rapier guide rail 1 is provided with a rapier 2, and the rapier guide rail 2 is wound on the rapier wheel 3 along the rapier guide rail 1 To move back and forth, a cam mechanism 10 is provided below the rapier bracket 9, and the cam mechanism 10 controls the rapier bracket 9 to move up and down along the bracket guide rail 11, and the rapier wheel 3 is connected to the shaft sleeve 5 through the bevel gear transmission mechanism 4. connected, the bevel gear transmission mechanism 4 includes a bevel gear coaxially fixed with the rapier wheel 3, another bevel gear matched with this bevel gear is located at the upper end of the shaft sleeve 5, and the spline shaft 6 is in phase with the shaft sleeve 5 Cooperate, the lower end of spline shaft 6 links to each other with crank-rocker mechanism 8 through bevel gear transmission mechanism 7, and crank-rocker mechanism 8 controls the back and forth motion of rapier 2, and described bevel gear transmission mechanism 7 includes being arranged on spline shaft The bevel gear of 6 lower ends, another bevel gear that cooperates with this bevel gear is coaxially fixed with the garden gear of crank rocker mechanism 8.

As shown in Figures 1 and 2, the cam mechanism 10 is a force-closed roller push rod cam mechanism, the rollers are in contact with the rapier bracket 9, and the rotation of the detachable cam impels the rapier bracket 9 to continuously rotate. Do up and down movement, every time a yarn layer is lowered, stay for a period of time and wait for the rapier 2 to complete the weft insertion action until the bottom weft insertion work is completed, the rapier support 9 will fall back to the top, and start a new round of weft insertion action . The detachable cam is divided into six levels, which are 10a, 10b, 10c, 10d, 10e, 10f and the transition surface between each level. Each level completes the weft insertion action of a yarn layer, starting from level 10a , the central angle corresponding to each level is 15°, and the central angle corresponding to the transition surface between them is 30°. When it rises to level 10f, the weft insertion action at the top level is completed, and then returns to the bottom level, and then starts from level 10a A new round of weft insertion.

As shown in Figures 1 and 3, the crank rocker mechanism 8 includes a sector gear as a rocker, and a garden gear as a crank. The sector gear is connected with the garden gear through a connecting rod, and the left and right swings of the sector gear drive The circular gear connected to it continuously rotates clockwise and counterclockwise. This rotation is transmitted to the mechanism composed of the spline shaft 6 and the sleeve 5 through the bevel gear transmission mechanism 7, and then transmitted to the bevel gear transmission mechanism 4, and finally converted into The weft insertion motion back and forth of rapier 2.

As shown in Figure 1 and Figure 4, the spline shaft 6 and the shaft sleeve 5 are combined to form a mechanism, the clockwise and counterclockwise rotation of the spline shaft 6 can be transmitted to the shaft sleeve 5 by the external spline of the spline shaft 6 The inner spline further drives the shaft sleeve 5 to rotate, and the rotation of the shaft sleeve 5 is transmitted to the rapier wheel 3 through the bevel gear transmission mechanism 4 connected with it, and converted into the back and forth motion of the rapier 2. The external splines of the spline shaft 6 and the internal splines of the shaft sleeve 5 can not only ensure that the two can rotate, but also can ensure that the two can move up and down from and together, so that the up and down movement of the rapier 2 does not move. hindered.

Claims (5)

1, rapier weft inserting apparatus for three-dimensional loom, it is characterized in that including arrow shaft support (9), arrow shaft guide rail (1), arrow shaft guide rail (1) is fixedlyed connected with arrow shaft support (9), arrow shaft guide rail (1) is provided with arrow shaft (2), arrow shaft (2) is wrapped in rapier wheel (3) upper edge arrow shaft guide rail (1) and does and move back and forth, described arrow shaft support (9) below is provided with cam mechanism (10), cam mechanism (10) control arrow shaft support (9) moves up and down along support guide (11), rapier wheel (3) is connected with axle sleeve (5) by Bevel Gear Transmission mechanism (4), splined shaft (6) matches with axle sleeve (5), the lower end of splined shaft (6) links to each other with crank and rocker mechanism (8) by Bevel Gear Transmission mechanism (7), and crank and rocker mechanism (8) is controlled moving back and forth of arrow shaft (2).

2, by the described rapier weft inserting apparatus for three-dimensional loom of claim 1, it is characterized in that described cam mechanism (10) includes a detachable cam, detachable cam is connected with arrow shaft support (9) contact, arrow shaft (2) is whenever finished the wefting insertion action on a plane, then detachable cam can drive thread layers of arrow shaft support rising, stay for some time then, detachable cam drives thread layers of arrow shaft support (9) rising again.

3, by the described rapier weft inserting apparatus for three-dimensional loom of claim 2, it is characterized in that described cam mechanism also includes a roller, contact is connected roller with the arrow shaft support with detachable cam, and the central shaft of roller is fixed on arrow shaft support below.

4, by claim 2 or 3 described rapier weft inserting apparatus for three-dimensional loom, it is characterized in that described detachable cam is divided into six grades, be respectively the fillet surface between 10a, 10b, 10c, 10d, six grades of 10e, 10f and each grade, each grade finished the wefting insertion action of a thread layers, from the 10a level, the central angle of each grade correspondence is 15 °, between the central angle of fillet surface correspondence be 30 °, when rising to the 10f level, finish the wefting insertion action of top layer, get back to the bottom then, begin the wefting insertion action of a new round again from the 10a level.

5, by the described rapier weft inserting apparatus for three-dimensional loom of claim 1, it is characterized in that described crank and rocker mechanism includes sector gear and does rocking bar, Knucle-gear is done crank, sector gear is connected with Knucle-gear by connecting rod, the swing of sector gear, drive coupled Knucle-gear and constantly do clockwise and counterclockwise rotation, rotatablely moving passes to splined shaft by Bevel Gear Transmission mechanism again, converts the clockwise and counterclockwise rotation of splined shaft to.

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