CN2329673Y

CN2329673Y - Wefting driving device for rapier loom

Info

Publication number: CN2329673Y
Application number: CN97242740U
Authority: CN
Inventors: 陈辅仁; 张瑞昌
Original assignee: JINSHIDUN TEXTILE MACHINERY CO SHANGHAI
Current assignee: JINSHIDUN TEXTILE MACHINERY CO SHANGHAI
Priority date: 1997-11-27
Filing date: 1997-11-27
Publication date: 1999-07-21
Anticipated expiration: 2007-11-27

Abstract

The utility model relates to a weft insertion transmission device for a rapier loom, which is composed of a center shaft, a crank, a connecting rod, a toothed rack, a bridging wheel, a rapier transferring gear, a large rapier transferring wheel, etc. The utility model is characterized in that an eccentric shaft is sheathed on the crank, and a fixed gear is hollowly sheathed on the center shaft; the eccentric shaft is not eccentric, and a star wheel is arranged on one end of the eccentric shaft, and the star wheel is meshed with the fixed gear; the meshed mode of a toothed belt can also be adopted. The utility model has the advantages that the movement regulation of a rapier head can be changed, and effective width in reed of the rapier loom can be increased.

Description

The wefting insertion transmission device of Rapier looms

The utility model relates to the novel wefting insertion transmission device that a kind of Rapier looms adopts in the industry of weaving cotton cloth.

Original wefting insertion transmission device is respectively adorned a cover in the loom both sides as shown in Figure 1 on the Rapier looms.Among Fig. 1: on the loom center power transmission shaft 1 crank 2 is housed, crank 2 rotates with central shaft 1.Refill on the crank 2 and put connecting rod 3, connecting rod 3 promotes tooth bar 4, and tooth bar 4 has the guide rail guiding to move up and down, and carrier gear 5 is back and forth rotated, and drives to pass also back and forth rotation of sword gear 6, also does back and forth to rotate thereby drive with the big sword transmission wheel 7 of 6 concentrics.Hold steel arrow shaft and be with 8 on big sword transmission wheel 7, arrow shaft is fixed on the big sword transmission wheel 7 with screw 9 with 8 root, when sword transmission wheel 7 is done back and forth to rotate, makes the gripper head 10 that is contained on the sword belt 8 make to stretch out retraction movement in the horizontal direction, thereby introduces weft yarn.

More than original device an obvious shortcoming is arranged: the diameter of big sword transmission wheel 7 can not strengthen, and can increase its inertia and be difficult for improving the speed of a motor vehicle because increase sword transmission wheel 7 diameters; And the space is less, does not also allow sword transmission wheel 7 enlarged diameter.Reed width is placed restrictions on so the maximum of this device is weaved cotton cloth, can not meeting the market requirement.

The utility model designs for solving above-mentioned contradiction, with meeting the market requirement, improves loom efficiency, reduces cost, reduces floor space, and better economic benefit is arranged.

Architectural feature of the present utility model as shown in Figure 2.Loom central shaft 1 is pressed the loom rotational speed among Fig. 2, it is characterized in that this novel wefting insertion transmission device installs crank 2 on central shaft 1, be with an eccentric shaft 11 on the crank 2, be fixed on the fixed gear 12 that can not rotate on the frame at central shaft 1 one in overhead cover, on without acceptance of persons one of eccentric shaft 11, load onto star-wheel 13, make star-wheel 13 and fixed gear 12 engagements of not rotating, gearratio is 1: 1.When crank 2 rotates, not only rotation but also of star-wheel 13 around central shaft 1 revolution, driving eccentric shaft 11 rotates, its characteristics of motion is the superimposed motion of the off-centre of the large eccentricity of crank 2 and small eccentricity axle, connecting rod 3 is housed on the eccentric shaft 11, driving tooth bar 4 moves up and down, pass sword gear 6 by idler 5 transmissions, big biography sword gear 7 is back and forth rotated, it is 8 fixing and surround on the big biography sword gear 7 by screw 9 that arrow shaft is with, be contained in arrow shaft and make to stretch out retraction movement in the horizontal direction, thereby introduce weft yarn with the gripper head 10 on 8.

More than novel wefting insertion transmission device following advantage is arranged:

1. moving up and down of tooth bar 4 as shown in Figure 2, except the influence that is subjected to crank 2, also to be subjected to the control of small eccentricity axle 11 off-centre, this just can be designed to gripper head 10 and move sooner in fell, and gripper head 10 is moving more slowly after going out selvedge even almost motionless, left alone without help by selvedge.So just can use onesize big biography sword gear 7 to weave wideer better cloth, satisfy market demand.

2. because of changing the few manufacturing cost that reduces of other part.

3. do not increase loom when increasing fabric width and weaving the floor space in workshop.

4. because the 10 left alone without help times in the selvedge outside of gripper head are long, speed is slow, has increased the stability of gripper head 10, reduces staplings, improves weaving efficiency.

Accompanying drawing 1 is former weft inserting apparatus structural representation, and Fig. 2 is the structural representation of the utility model after improving, and Fig. 3 specifically implements shop drawings for the utility model.Among the figure:

1. central shaft 2. cranks

3. connecting rod 4. tooth bars

5. idler 6. passes the sword gear

7. big sword transmission wheel 8. arrow shafts band

9. screw 10. gripper heads

11. eccentric shaft 12. fixed gears

13. star-wheel 14. wallboards

15. bearing holder (housing, cover) 16. roller bearings

17. key 18. needle bearings

19. needle bearing

Be further described below in conjunction with the concrete figure (Fig. 3) that implements.

Shown in Figure 3 device each side adorned a cover loom.

Be fixed with bearing holder (housing, cover) 15 on the loom side 14, roller bearing 16 is housed in bearing holder (housing, cover) 15, central shaft 1 is contained in the bearing 16 and stretches out the bearing certain-length, central shaft 1 is pressed the loom rotational speed, be equipped with at an end of bearing holder (housing, cover) 15 and maintain static moving fixed gear 12, in fact gear 12 is that sky is enclosed within on the central shaft 1 and with frame and fixes, crank 2 is packed on the central shaft by key 17, rotate with central shaft 1, needle bearing 18 is housed in the hole on crank 2, star-wheel 13 is packed in (actual 13 and 11 have been made of one) on the small eccentricity axle 11, small eccentricity axle 11 is packed in two needle bearings 18, small eccentricity is A, star-wheel 13 and fixed gear 12 engagements (the also available odontoid belt engagement of separate case).Connecting rod 3 is inserted in by needle bearing 19 on the little spindle nose that has the A eccentric throw of small eccentricity axle 11, and connecting rod 3 drives tooth bar 4 again and sword transmission wheel 7 is finished the wefting insertion action.

Claims

1. the wefting insertion transmission device of Rapier looms comprises central shaft 1, crank 2, connecting rod 3, tooth bar 4, idler 5, passes compositions such as sword gear 6, big sword transmission wheel 7, it is characterized in that:

Eccentric shaft 11 of cover on the described crank 2, fixed gear 12 of the overhead cover of central shaft 1, eccentric shaft 11 load onto star-wheel 13 on one without acceptance of persons, make star-wheel 13 and fixed gear 12 engagements.