Improved mechanism on a rapier loom

Abstract

The utility model discloses an improved mechanism on the gauze band loom, including swing axle, be provided with crank rocker on swing axle, be provided with linkage lever on crank rocker, the connecting bearing of two is set to the connecting rod of crank rocker, and a plurality of connecting bolts are set between two connecting bearings, the side rod inner wall of crank rocker all is provided with annular groove, and the thrust ball bearing is inlayed in the annular groove, the outer ring of connecting bearing is provided with the extension edge outward, and one side of thrust ball bearing can resist and touch on the extension edge. The utility model has the advantages and effects that: through the improved mechanism, the probability that the side of bearing inner ring or outer ring is easy to touch the side rod inner wall because of the installation position deviation of bearing in the axial direction of connecting rod is reduced, and the rotation of linkage lever can be more smooth.

Description

Technical Field

[0001] This utility model relates to the field of rapier loom technology, and in particular to an improved mechanism for rapier looms. Background Technology

[0002] The rocker arm drives the balance shaft via a crank-rocker structure and a connecting rod. The crank-rocker structure typically includes side rods on both sides and a connecting rod between the two side rods. The end of the connecting rod and the rocker arm is usually structured as two semi-circular arcs, which are fixed together by two upper and lower screws that wrap around the middle of the crank-rocker arm. The other end of the connecting rod is connected to the balance shaft.

[0003] To ensure the stable rotation of the crank rocker, a bearing is installed between the end of the linkage rod and the U-shaped structure. However, the inner ring of the bearing is sleeved on the connecting rod, and its position in the axial direction of the connecting rod is unstable. This causes the side of the inner or outer ring of the bearing to easily come into contact with the inner wall of the side rod, affecting the smooth rotation of the linkage rod. Utility Model Content

[0004] The purpose of this invention is to provide an improved mechanism for rapier looms.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an improved mechanism on a rapier loom, including a rocker shaft, a crank rocker arm on the rocker shaft, and a linkage rod on the crank rocker arm, characterized in that: two connecting bearings are sleeved on the connecting rod of the crank rocker arm, and a plurality of connecting bolts are arranged between the two connecting bearings; annular grooves are provided on the inner wall of the side rod of the crank rocker arm, and thrust ball bearings are embedded in the annular grooves; the outer ring of the connecting bearings is provided with an outwardly extending edge, and one side of the thrust ball bearing can abut against the extending edge.

[0006] Further configuration: The connecting bolts are positioned between the inner rings of the two connecting bearings.

[0007] A further setting is made such that the outer diameter of the end of the linkage rod is greater than the outer diameter of the side rod.

[0008] The extension edge is further configured such that its outer wall has an annular recess, and the linkage rod is disposed on the annular recess.

[0009] In summary, this utility model has the following beneficial effects: through this improved mechanism, the probability of the inner or outer ring of the bearing easily colliding with the inner wall of the side rod due to the installation position deviation of the bearing in the axial direction of the connecting rod can be reduced, making the rotation of the linkage rod smoother. Attached Figure Description

[0010] Figure 1 A schematic diagram showing the overall position of the improved mechanism on a rapier loom; Figure 2 This is a schematic diagram of the crank-rocker mechanism. Figure 3 for Figure 2 Schematic diagram of the cross section of AA; Figure 4 for Figure 2 Schematic diagram of cross section of BB.

[0011] In the diagram: 1. Rocker shaft; 2. Crank rocker arm; 21. Side rod; 22. Connecting rod; 3. Linkage rod; 4. Connecting bearing; 41. Inner ring; 42. Outer ring; 5. Connecting bolt; 6. Annular groove; 7. Thrust ball bearing; 8. Extended edge; 9. Annular concave groove. Detailed Implementation

[0012] The present invention will be further described in detail below with reference to the accompanying drawings.

[0013] An improved mechanism on a rapier loom includes a frame, with a rocker arm 1 and a swing arm arranged between the frames.

[0014] A crank rocker arm 2 is located at the edge of the rocker shaft 1. The crank rocker arm 2 is U-shaped and consists of two side rods 21 on both sides and a connecting rod 22 located between the two side rods 21. The ends of the side rods 21 are provided with through holes, and the connecting rod 22 is inserted into the through holes and connected by conventional bolts or other fixing methods to prevent mutual rotation.

[0015] Two connecting bearings 4 are fitted on the connecting rod 22 of the crank rocker arm 2. Several connecting bolts 5 are provided between the inner rings 41 of the two connecting bearings 4, thereby fixing the left and right connecting bearings 4 into one piece.

[0016] The inner wall of the side rod 21 of the crank rocker arm 2 is provided with annular grooves 6, and a thrust ball bearing 7 is embedded in each annular groove 6. The outer ring 42 of the connecting bearing 4 is provided with an outwardly extending edge 8, and one side of the thrust ball bearing 7 can abut against the extending edge 8. When the installation position of the two interconnected connecting bearings 4 is slightly off-center, direct contact between the connecting bearing 4 and the inner wall of the side rod 21 can be avoided, thereby ensuring smooth rotation.

[0017] A linkage rod 3 is provided outside the two interconnected connecting bearings 4 of the crank rocker arm 2. The outer wall of the extension edge 8 is provided with an annular recess 9, wherein the annular recess is provided relative to the two interconnected connecting shafts, that is, the recess of the connecting bearing 4 located on the left is located on the right and communicates with the recess on the connecting bearing 4 located on the right to form the same annular recess. The semi-circular arc at the end of the linkage rod 3 is fixed in the annular recess by bolts.

[0018] The outer diameter of the end of the linkage rod 3 is larger than the outer diameter of the side rod 21, which can keep the end of the linkage rod 3 from contacting the side rod 21.

[0019] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. An improved mechanism for a rapier loom, comprising a rocker shaft, a crank rocker arm mounted on the rocker shaft, and a linkage rod mounted on the crank rocker arm, characterized in that: Two connecting bearings are fitted on the connecting rod of the crank rocker arm, and several connecting bolts are arranged between the two connecting bearings; annular grooves are provided on the inner wall of the side rod of the crank rocker arm, and thrust ball bearings are embedded in the annular grooves; the outer ring of the connecting bearings is provided with an outward extension edge, and one side of the thrust ball bearing can abut against the extension edge.

2. The improved mechanism on the rapier loom according to claim 1, characterized in that: The connecting bolts are located between the inner rings of the two connecting bearings.

3. The improved mechanism on the rapier loom according to claim 1, characterized in that: The outer diameter of the end of the linkage rod is larger than the outer diameter of the side rod.

4. The improved mechanism on the rapier loom according to claim 1, characterized in that: The outer wall of the extended side is provided with an annular concave shape, and the linkage rod is disposed on the annular concave shape.

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