CN2447343Y

CN2447343Y - Warp let-off device

Info

Publication number: CN2447343Y
Application number: CN 00249843
Authority: CN
Inventors: 俞李平; 莫弟根
Original assignee: XIAOSHAN CITY LIGHT INDUSTRY MACHINERY PLANT
Current assignee: XIAOSHAN CITY LIGHT INDUSTRY MACHINERY PLANT
Priority date: 2000-10-25
Filing date: 2000-10-25
Publication date: 2001-09-12
Anticipated expiration: 2010-10-25

Abstract

The utility model relates to a warp feeding device of a shuttleless loom, which comprises an input transmission mechanism, an adjusting speed changing mechanism and an output transmission mechanism. The input transmission mechanism adopts a chain to connect a multi-arm shaft. A bevel gear of the adjusting speed changing mechanism is engaged and connected with a bevel pinion. The output transmission mechanism is connected through a speed change gear set. A tension arm of the adjusting speed changing mechanism is connected with an upper shifting fork through a draw rod and a rocking arm. A weight dropper is connected with the rocking arm through a bearing rod. A threaded rod is connected with the upper shifting fork and a lower shifting fork. The upper and the lower shifting forks are connected with an upper and a lower speed change wheels. Therefore, the continuous stepless speed regulation and the synchronous forward and backward operation of the loom are realized. The utility model solves the defect that latitudinal sparse and dense demarcation easily occur on the surface of a texture, since a warp feeding mechanism can not reverse in intermittent operation.

Description

A kind of let-off motion

The utility model relates to the let-off motion of shuttleless loom, is specifically related to a kind of let-off motion on the GA74 type Rapier looms.

Warp-feeding mechanism on the existing GA74 type Rapier looms is when operating mode, it is intermittent duty, antikinesis voluntarily, therefore when staplings stops, by artificial reversing, manual operation is difficult to make the coupling of its reversing amplitude, is easy to generate the rare close shelves of cloth cover broadwise, influence the quality of fabric, increase operation labour intensity simultaneously and lower production efficiency.

The utility model provides a kind of let-off motion, solves to be used for the shortcoming that influences fabric quality that the pumping on the GA74 type loom is occurred through mechanism's intermittent duty.

The utility model that is used for GA74 type Rapier looms adopts following technical conceive scheme: it includes the input driver structure, regulates gear and output transmission mechanism; The input driver structure is by the sprocket wheel of coaxial assembling, clutch, bevel gear; On the adjusting gear has, following change pulley, be with synchronously, the change-speed gearing group, tension arm is arranged, pull bar, fork up and down, weight, the output transmission mechanism is by worm screw, worm gear, warp let-off gear and form through reel, the input of input driver structure connects multi-arm axle on the loom by chain, the tension arm of regulating gear is by pull bar and the rocking arm upper shift fork that joins, weight connects rocking arm by pole, on screw rod connects, lower shift fork, on, lower shift fork connects respectively, following change pulley, the cone pinion of output transmission mechanism is connected with a joggle and regulates the bevel gear of gear, connects the worm screw of output transmission mechanism by the change-speed gearing group.

When adjusting gear of the present utility model changes at the fabric warp tension of loom, the back rest is upper and lower to be moved, and makes upper and lower change pulley vary in diameter, warp let-off gearratio speedup or deceleration, corresponding increase or minimizing warp run-in, adjustment of tonicity keeps initial steady state automatically; The utility model input connects the multi-arm axle of loom, can realize positive and negative direction operation, overcomes the defective that former let-off motion can not antikinesis, thereby enhances productivity and fabric quality.

Below, reach embodiment in conjunction with the accompanying drawings, details are as follows to technology contents of the present utility model:

Fig. 1 is the utility model topology view.

Fig. 2 is that Figure 1A-A is to view.

Fig. 3 is that Fig. 1 C-C is to view.

The sprocket wheel 10 of input mechanism of the present utility model, clutch 28, cone pinion 8 coaxial connections, this is installed in by bearing block on the casing 1 that connects on the big wallboard 27, is driven by sprocket wheel 10, as shown in Figure 3.Multi-arm beam warp chain on the loom drives sprocket wheel 10, by cone pinion 8 and bevel gear 11 engaged transmission, drives and regulates the gear operation.Regulating the upper and lower change pulley of gear respectively is made up of two speed change dishes 14,15 (14 ', 15 ') and movable sleeve 12 (12 '), a speed change dish 15 (15 ') is fixed on the wheel shaft 18 (26), 14 (14 ') of another speed change dish connect movable sleeve, 12 (12 ') activity is installed on the wheel shaft 18 (26),

wheel shaft

18 and 26 is movably connected in the casing 1, connect between them and be with 25 synchronously, one of last change pulley wheel shaft 18 connects bevel gear 11, bevel gear 11 is connected with a joggle with cone pinion 8, change pulley in the drive drives change pulley down by being with 25 synchronously.The tension arm 16 that connects the back rest 17 flexibly connects pull bar 13, the other end of pull bar 13 links to each other with rocking arm 7 on being movably connected in

big wallboard

27,13 1 connections of pole heavily hang down 24, the other end connects rocking arm 7; rocking arm 7 joins with upper shift fork 6; upper and lower shift fork 6 links to each other with 12 ' with the movable sleeve 12 of upper and lower change pulley respectively with 22 two statures, and two other head is by screw rod 20 flexible connections.The input gear 23-a of a connection change-speed gearing group of the following change pulley wheel shaft 26 of adjusting gear, input gear 23-a drives and transmits gear 23-b, transmit gear 23-b and the coaxial assembling of 23-c, this transmission gear shaft is installed on the casing 1 by bearing block, transmitting gear 23-c is connected with a joggle with output gear 23-D, output gear 23-D connects the worm shaft 27 of output transmission mechanism, worm shaft 27 other ends are connected with a joggle with worm gear 3, worm gear 3 and warp let-off gear 5 are with being installed on the worm-wheel shaft 4, worm gear 3 drives warp let-off gear 5, warp let-off gear 5 is connected with a joggle transmission through reel 19, as depicted in figs. 1 and 2.

The tension arm 16 of adjusting gear of the present utility model is along with the back rest 17 rotates rocking arm 7 because of being subjected to the big or small variation of rising, descend of warp tension, driving to put on the pull bar 13 to fall; Tension force is big, the back rest 17 descends; rocking arm 7 pulling upper shift forks 6; change pulley movable sleeve 12 on upper shift fork 6 roof pressures, and change pulley is shifted near, and it is big that diameter becomes; meanwhile; drive the movable sleeve 12 ' of change pulley under the pulling of lower shift forks 22 by screw rod 20, change pulley is removed, diameter diminishes; accelerated the rotating speed of time change pulley, by the input gear 23-a of the change-speed gearing group of one of speed change wheel shaft 26 drive connection down.By the change-speed gearing group, make worm shaft 27 drive worm gear 3, drive the warp let-off gear 5 that links to each other with worm-wheel shaft 4, and transmission reaches the warp run-in of original setting through reel 19.When tension force little, the back rest rises, by rocking arm 7 upper shift fork 6 is outwards spurred and go up change pulley movable sleeve 12, diameter diminishes, make down the change pulley diameter become big through screw rod 20, warp let-off gearratio slows down, through the output transmission mechanism, transmission is diminished through reel 19 warp run-ins, and overline is got back to the warp run-in of former setting.The size of initial tension can reach by the weight that increases or reduce weight 24.During the loom staplings, the automatic latitude seeking driven by motor multi-arm axle reversing of the staplings device on loom, drive key wheel 10 by chain 9 and make input driver structure inverted running, thereby make the adjusting gear, output transmission mechanism inverted running, the realization transmission is sought the latitude operation through reel 19 with the cloth beam gear wheel reversing synchronously of cloth-winding mechanism.

Claims

1, a kind of let-off motion, it includes the input driver structure, regulates gear and output transmission mechanism, it is characterized in that:

The input sprocket wheel (10) of A, input driver structure is connected the multi-arm axle of loom by chain.

B, tension arm (16) are connected upper shift fork (6) by pull bar (13) with rocking arm (7), weight (24) connects rocking arm (7) by pole (21), screw rod (20) connects upper and lower shift fork (6) and (22), and upper and lower shift fork (6) is connected upper and lower change pulley respectively with (22).

2, a kind of let-off motion according to claim 1 is characterized in that: the movable sleeve (12) of change pulley in upper shift fork (6) connection, lower shift fork (22) connect the movable sleeve (12 ') of change pulley down.

3, a kind of let-off motion according to claim 1 is characterized in that: band (25) connects upper and lower change pulley synchronously.

4, a kind of let-off motion according to claim 1 is characterized in that: the input tension arm (16) of regulating gear connects the back rest (17) of loom.