Weft yarn transmission mechanism of rapier loom

Abstract

The utility model discloses a weft yarn transmission mechanism of a rapier loom, which comprises a power shaft, a gear, a rotating arm, a rocker arm, a cross shaft and a sector gear, the power shaft is coaxially and fixedly connected with the gear, and the rotating arm is eccentrically arranged on the end face of the gear. The rocker arm is rotationally connected with the rotating arm, the rotating axis of the rocker arm does not coincide with the rotating axis of the rotating arm, the cross shaft is rotationally connected with the rocker arm, and the sector gear is fixedly connected with one side of the rocker arm. Through the design of the rocker arm and the cross shaft, the rotary motion of the power shaft is converted into the precise reciprocating swing of the fan-shaped teeth, the transmission structure of original loom equipment is simplified, transmission parts are reduced, the overall weight of the structure is reduced, the structural load is reduced, and the reciprocating impact borne by the overall loom transmission structure is reduced; and high-speed operation of weaving machine equipment is facilitated. The power shaft is driven by a motor to rotate.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of rapier loom, concretely relates to rapier loom weft transmission mechanism. BACKGROUND

[0002] The transmission mechanism of weaving machine equipment is generally used for realizing power transmission, and the traditional weaving machine equipment is as shown in the figure, the rotating arm A1 rotates around the rotating shaft 01, drives the forked rocker A2 to make three-dimensional space movement, the swing seat A3 connected with the forked rocker A2 reciprocating swings around the center point 02, drives the sector gear A5 to reciprocating swing around the center point 03 through the connecting rod A4, the meshing gear shaft A6 drives the sword wheel A7 to reciprocating rotate around the center point 04, and the sword wheel A7 drives the sword head and sword belt A8 to make reciprocating linear motion. Figure 1 The power of the motor output end connected with the rotating shaft 01 needs to realize power transmission through a long transmission chain, the weft insertion transmission structure is complex, the number of moving parts is large, the overall quality of the transmission mechanism is large, and the load is also large. SUMMARY

[0003] In view of the technical problem that the transmission mechanism of the transmission loom is not good in use effect, the utility model provides a rapier loom weft transmission mechanism, the rotating movement of the power shaft is converted into the accurate reciprocating swing of the sector gear through the design of the rocker arm and the cross shaft, the transmission structure of the original weaving machine equipment is simplified, and the transmission parts are reduced.

[0004] The technical scheme adopted by the utility model is as follows: a rapier loom weft transmission mechanism, comprising a power shaft, a gear, a rotating arm, a rocker arm, a cross shaft and a sector gear, the power shaft is coaxially fixedly connected with the gear, the rotating arm is eccentrically installed on the gear end face, the rocker arm is rotatably connected with the rotating arm, and the rotating axis of the rocker arm does not coincide with the rotating axis of the rotating arm, the cross shaft is rotatably connected with the rocker arm, and the sector gear is fixedly connected with one side of the cross shaft.

[0005] Optionally, the rocker arm comprises a first connecting arm and a second connecting arm which is connected with the first connecting arm at an angle, the first connecting arm is rotatably connected with the rotating arm through a first bearing, and the second connecting arm is connected with the cross shaft through a second bearing.

[0006] Optionally, the second connecting arm comprises a first connecting end and a second connecting end which is arranged correspondingly with the first connecting end, the cross shaft is rotatably connected with the first connecting end through a second bearing, and the cross shaft is rotatably connected with the second connecting end through a third bearing.

[0007] Optionally, the cross shaft comprises a first connecting shaft, a second connecting shaft, a third connecting shaft and a fourth connecting shaft, the first connecting shaft is coaxially connected with the second connecting shaft, the third connecting shaft is coaxially connected with the fourth connecting shaft, the first connecting shaft is arranged at an angle with the third connecting shaft, the sector teeth are fixedly connected with the first connecting shaft and the second connecting shaft respectively, the first connecting shaft is rotatably connected with the first connecting end through the second bearing, the second connecting shaft is rotatably connected with the second connecting end through the third bearing, the third connecting shaft is rotatably installed on the weft insertion box through the fourth bearing, and the fourth connecting shaft is rotatably installed on the weft insertion box through the fifth bearing.

[0008] Optionally, an included angle between the first connecting arm and the second connecting arm is 45-90°.

[0009] Optionally, one side of the gear towards the rotating arm is provided with a protrusion, the protrusion is provided with a sliding groove, the rotating arm comprises a bearing seat and a connecting arm integrally connected with the bearing seat, the first bearing is arranged in the bearing seat, and the bottom surface of the connecting arm is slidably connected with the sliding groove.

[0010] Optionally, the protrusion is provided with a pressing block, a first inclined surface is arranged on the side wall of the connecting arm along the length direction, the pressing block is provided with a second inclined surface matched with the first inclined surface, and the second inclined surface is arranged on the upper surface of the second inclined surface.

[0011] Optionally, the pressing block is installed on the protrusion through a screw.

[0012] The beneficial effects of the utility model are as follows: through the design of the rocker arm and the cross shaft, the rotary motion of the power shaft is converted into the accurate reciprocating swing of the sector teeth, the transmission structure of the original loom equipment is simplified, the transmission components are reduced, the overall weight of the structure is reduced, the structural load is reduced, the reciprocating impact borne by the overall loom transmission structure is reduced, and the high-speed operation of the loom equipment is more favorable. The power shaft can be driven to rotate by a motor. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the traditional loom equipment mentioned in the background art;

[0014] Figure 2 It is a structural schematic view of the rapier loom weft transmission mechanism provided in the utility model embodiment;

[0015] Figure 3 It is a schematic view of the rocker arm of the rapier loom weft transmission mechanism provided in the utility model embodiment;

[0016] Figure 4 It is a schematic view of the cross shaft of the rapier loom weft transmission mechanism provided in the utility model embodiment;

[0017] Figure 5The utility model discloses a schematic view of the pressing block and connecting arm cooperation of the weft yarn transmission mechanism of the rapier loom.

[0018] The marks in each drawing are: 1, power shaft; 2, gear; 21, protruding block; 211, sliding groove; 22, pressing block; 221, second inclined surface; 23, screw; 3, rotating arm; 31, bearing seat; 32, connecting arm; 321, first inclined surface; 4, rocker arm; 41, first connecting arm; 42, second connecting arm; 421, first connecting end; 422, second connecting end; 43, first bearing; 44, second bearing; 45, third bearing; 46, fourth bearing; 47, fifth bearing; 5, cross shaft; 51, first connecting shaft; 52, second connecting shaft; 53, third connecting shaft; 54, fourth connecting shaft; 6, sector gear; 7, weft insertion box. DETAILED DESCRIPTION

[0019] The application will be further described in detail below with reference to the drawings and embodiments.

[0020] As Figures 2 to 5 shown, the utility model discloses a kind of weft yarn transmission mechanism of rapier loom, including power shaft 1, gear 2, rotating arm 3, rocker arm 4, cross shaft 5 and sector gear 6, the power shaft 1 is coaxially fixedly connected with the gear 2, the rotating arm 3 is eccentrically installed in gear 2 end face, the rocker arm 4 is rotatably connected with rotating arm 3, and the rotation axis of the rocker arm 4 does not coincide with the rotation axis of rotating arm 3, the cross shaft 5 is rotatably connected with rocker arm 4, and the sector gear 6 is fixedly connected with one side of cross shaft. By the design of rocker arm 4 and cross shaft 5, the rotation movement of power shaft 1 is converted into the accurate reciprocating swing of sector gear 6, the transmission structure of original loom equipment is simplified, the transmission component is reduced, the weight of structure whole is reduced, the structure load is reduced, so that the reciprocating impact that whole loom transmission structure bears is reduced, more conducive to the high-speed operation of loom equipment. Power shaft 1 is rotated by motor drive.

[0021] In the embodiment, as Figure 2 and 3 shown, the rocker arm 4 includes first connecting arm 41 and second connecting arm 42 connected with first connecting arm 41 at an angle, the first connecting arm 41 is rotatably connected with rotating arm 3 through first bearing 43, and the second connecting arm 42 is connected with cross shaft 5 through second bearing 44. The second connecting arm 42 includes first connecting end 421 and second connecting end 422 arranged correspondingly with first connecting end 421, the cross shaft 5 is rotatably connected with first connecting end 421 through second bearing 44, and the cross shaft 5 is rotatably connected with second connecting end 422 through third bearing 45. The first connecting end 421, the second connecting end 422 and the first connecting arm 41 of the rocker arm 4 form a Y-shaped structure. The rocker arm 4 is integrally injection molded.

[0022] In the embodiment, as shown in Figure 2 and 4 The cross shaft 5 includes a first connecting shaft 51, a second connecting shaft 52, a third connecting shaft 53 and a fourth connecting shaft 54. The first connecting shaft 51 is coaxially connected with the second connecting shaft 52, the third connecting shaft 53 is coaxially connected with the fourth connecting shaft 54, and the first connecting shaft 51 is arranged at an angle with the third connecting shaft 53. The sector teeth are fixedly connected with the first connecting shaft and the second connecting shaft respectively. The first connecting shaft 51 is rotatably connected with the first connecting end 421 through the second bearing 44, the second connecting shaft 52 is rotatably connected with the second connecting end 422 through the third bearing 45, the third connecting shaft 53 is rotatably installed on the weft insertion box 7 through the fourth bearing 46, and the fourth connecting shaft 54 is rotatably installed on the weft insertion box 7 through the fifth bearing 47. The cross shaft 5 is integrally injection molded.

[0023] In the embodiment, the included angle between the first connecting arm 41 and the second connecting arm 42 is 45-90°. The included angle between the first connecting arm 41 and the second connecting arm 42 can be 45°, 60°, 70° or 90°.

[0024] As shown in Figure 5 The gear 2 is provided with a protrusion 21 on one side facing the rotating arm. The protrusion 21 is provided with a sliding groove 211. The rotating arm 3 includes a bearing seat 31 and a connecting arm 32 integrally connected with the bearing seat 31. The first bearing 43 is arranged inside the bearing seat 31. The bottom surface of the connecting arm 32 is in sliding connection with the sliding groove 211. The diameter of the protrusion 21 is slightly smaller than the diameter of the gear 2. The outer ring of the first bearing 43 is in interference fit with the bearing seat 31, and the inner ring of the first bearing 43 is in interference fit with the first connecting arm 41. The position of the rotating arm 3 on the gear 2 is adjusted through the sliding groove 211, so that the size of the reciprocating stroke of the sector tooth 6 can be changed. The closer the bearing seat 31 is to the axial line of the gear 2, the shorter the reciprocating stroke of the sector tooth 6 is. The protrusion 21 can be integrally injection molded with the gear 2.

[0025] In the embodiment, as shown in Figure 5 The protrusion 21 is provided with a pressing block 22. The side wall of the connecting arm 32 is provided with a first inclined surface 321 along the length direction. The pressing block 22 is provided with a second inclined surface 221 matched with the first inclined surface 321. The second inclined surface 221 is pressed on the upper surface of the second inclined surface 221. The pressing block 22 is installed on the protrusion 21 through a screw 23. The pressing block 22 and the protrusion 21 are both provided with screw holes through which the screw 23 passes. When the position of the rotating arm 3 needs to be adjusted, the screw 23 is loosened, the pressing block 22 is separated from the protrusion 21, the rotating arm 3 is moved along the sliding groove 211 to a suitable position, the second inclined surface 221 of the pressing block 22 is pressed on the upper surface of the first inclined surface 321, and the screw 23 is tightened to fix the rotating arm 3 on the protrusion 21.

[0026] It can be understood that the specific embodiments described above are only used to explain the utility model, and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for the convenience of description. Multiple technical solutions in the same embodiment and multiple technical solutions of different embodiments can be arranged and combined to form new technical solutions without contradiction or conflict. Any equivalent structural transformation using the contents of the utility model specification and drawings, direct or indirect application in other related technical fields, are also included in the protection scope of the utility model.

Claims

1. A rapier loom weft drive mechanism, characterised in that, The device comprises a power shaft, a gear, a rotating arm, a rocker arm, a cross shaft and a sector gear, the power shaft is coaxially fixedly connected with the gear, the rotating arm is eccentrically installed on the end face of the gear, the rocker arm is rotationally connected with the rotating arm, and the rotation axis of the rocker arm does not coincide with the rotation axis of the rotating arm, the cross shaft is rotationally connected with the rocker arm, and the sector gear is fixedly connected with one side of the cross shaft.

2. The rapier loom weft drive mechanism according to claim 1, characterized in that, The rocker arm comprises a first connecting arm and a second connecting arm which is angularly connected with the first connecting arm, the first connecting arm is rotationally connected with the rotating arm through a first bearing, and the second connecting arm is connected with the cross shaft through a second bearing.

3. The rapier loom weft drive mechanism according to claim 2, characterized in that, The second connecting arm comprises a first connecting end and a second connecting end which is correspondingly arranged with the first connecting end, the cross shaft is rotationally connected with the first connecting end through the second bearing, and the cross shaft is rotationally connected with the second connecting end through a third bearing.

4. The rapier loom weft drive mechanism according to claim 3, characterized in that, The cross shaft comprises a first connecting shaft, a second connecting shaft, a third connecting shaft and a fourth connecting shaft, the first connecting shaft is coaxially connected with the second connecting shaft, the third connecting shaft is coaxially connected with the fourth connecting shaft, the first connecting shaft is angularly arranged with the third connecting shaft, the sector gear is fixedly connected with the first connecting shaft and the second connecting shaft respectively, the first connecting shaft is rotationally connected with the first connecting end through the second bearing, the second connecting shaft is rotationally connected with the second connecting end through the third bearing, the third connecting shaft is rotationally installed on the weft insertion box through a fourth bearing, and the fourth connecting shaft is rotationally installed on the weft insertion box through a fifth bearing.

5. The rapier loom weft drive mechanism according to claim 2, characterized in that, The included angle between the first connecting arm and the second connecting arm is 45-90°.

6. The rapier loom weft drive mechanism according to claim 2, characterized in that, One side of the gear facing the rotating arm is provided with a protrusion, the protrusion is provided with a sliding groove, the rotating arm comprises a bearing seat and a connecting arm which is integrally connected with the bearing seat, the first bearing is arranged in the bearing seat, and the bottom surface of the connecting arm is slidingly connected with the sliding groove.

7. The rapier loom weft drive mechanism according to claim 6, characterized in that, The protrusion is provided with a pressing block, the side wall of the connecting arm is provided with a first inclined surface along the length direction, the pressing block is provided with a second inclined surface which is matched with the first inclined surface, and the second inclined surface is pressed on the upper surface of the second inclined surface.

8. The rapier loom weft drive mechanism according to claim 7, characterized in that, The pressing block is installed on the protrusion through a screw.

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