CN215103789U

CN215103789U - Side blocking structure of heald frame of rapier loom

Info

Publication number: CN215103789U
Application number: CN202120508309.7U
Authority: CN
Inventors: 程真真
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2021-12-10
Anticipated expiration: 2031-03-10

Abstract

The utility model relates to a side fender structure of rapier weaving machine heald frame belongs to the accessory for the frame, mainly comprises U type side fender and driving piece, and characteristics are that the driving piece is through three rivet and U type side fender solid dress together, and three rivet hole on the U type side fender is triangular distribution, not on a straight line, has reduced stress concentration, has reduced the heald frame and has sidedly kept off fatigue fracture's risk. Has the effects of reasonable rivet layout, high riveting strength and long service life.

Description

Side blocking structure of heald frame of rapier loom

Technical Field

The utility model belongs to loom accessory structure, especially a side fender structure of rapier weaving machine heald frame.

Background

Heald frames are an important part of weaving machines and are connected together by upper and lower transverse beams and left and right side stops with drive elements. After the heald is installed on the heald frame, the warp threads penetrating the heald are integrated, the heald lifting mechanism of the weaving machine drives the heald frame driving piece through the heald lifting rod, the heald frame moves up and down according to the program of the opening device, the warp threads are opened in a layered mode, and weft yarns shuttle in the warp threads to be interwoven into fabrics with different patterns. The drive element, which is usually made of a steel material, and the side stop, which is usually made of an aluminum alloy material, are the directly stressed components of the heald frame, which are fastened together by rivets. In the prior art, 3 rivet holes of the side stop are linearly distributed, so that stress concentration is caused; the side keeps off simultaneously and adopts U type side to keep off, and the side is provided with the bar recess, is provided with the lifting rod who is used for driving the driving piece in the bar recess, though the rivet hole sets up between two parties basically on the tip concave surface, nevertheless because the reason of U type side fender upper groove, the stress point is between recess bottom and rivet hole, and the wall thickness undersize, and this not only weakens the structural strength that the heald frame was kept off to the side, arouses the heald frame side to keep off fatigue fracture in addition easily. Along with market demands, the speed of the weaving machine is continuously increased, some weaving machines need to be provided with nearly 20 heald frames due to the particularity of fabrics, the vertical movement amplitude of the last heald frame is close to 140 mm, the speed and the load are increased beyond the bearing capacity of the heald frame side rail, and the fatigue fracture of the heald frame side rail of a weaving enterprise occurs in recent years, so that the economic loss of the enterprise is not small.

Disclosure of Invention

An object of the utility model is to provide a rapier weaving machine heald frame's that nonlinear connection side keeps off structure.

The utility model discloses a realize like this:

the utility model provides a side fender structure of rapier weaving machine heald frame mainly comprises U type side fender and driving piece, and the driving piece clamps on the tip concave surface that U type side kept off, its characterized in that: the driving piece is fixedly connected with the U-shaped side block through three rivets, and three rivet holes in the U-shaped side block are distributed in a triangular mode.

Three rivet holes on the concave surface of the U-shaped side baffle end part are distributed in an isosceles triangle. The minimum wall thicknesses from the three rivet holes to the U-shaped side blocking edge are equal and are larger than the thickness of the end concave surface.

By adopting the structure, the utility model adopts a triangular structure, 3 rivet holes on the U-shaped side baffle are not on the same straight line, thereby reducing stress concentration and reducing the risk of fatigue fracture of the side baffle of the heald frame; meanwhile, the minimum wall thickness from the 3 rivet holes to the edge of the U-shaped side baffle is consistent, and the effect of synchronous scrapping can be achieved. Has the effects of reasonable rivet layout, high riveting strength and long service life.

Drawings

Fig. 1 is a schematic structural diagram of the present invention, fig. 2 is a sectional view of fig. 1, and fig. 3 is a schematic structural diagram of an original side stop and driving member.

In the attached drawing, 1 is a U-shaped side baffle, 2 is a driving piece, 3 is an end concave surface, 4 is a groove, 5 is a top boss, 6 is a rivet hole, and 7 is a lifting rod.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the accompanying drawings.

The utility model relates to a side keeps off and driving piece structure for with the cooperation of rapier weaving machine heald frame, drive the heald frame up-and-down motion, accomplish opening, the yarn threading. As shown in fig. 1, the utility model discloses mainly by with heald frame complex U type side keep off 1 and driving piece 2 constitute, U type side keep off 1 top position and be provided with concave surface 3 for cooperate with driving piece 2. As shown in fig. 2, a strip-shaped groove 4 is arranged outside the U-shaped side stop 1 for penetrating a lifting rod 7, and the lifting rod 7 drives the driving member 2 to move. As shown in fig. 1, the driving element 2 is clamped on the concave surface 3 at the end of the U-shaped side block 1, and the driving element 2 is fixed with the U-shaped side block 1 by three rivets. The 3 rivet holes 6 on the end concave surface 3 are arranged in a triangular structure, are not on a straight line, can be distributed in an isosceles triangle or a non-equilateral triangle, and can also be distributed asymmetrically.

In order to facilitate the triangular arrangement of the 3 rivet holes 6, the top boss 5 is enlarged outwards on the inner side of the concave surface 3 of the end part of the side stop matched with the driving piece 2, and the middle one of the rivet holes 6 of the triangular arrangement can be close to the top boss 5 or positioned on the opposite side of the top boss 5.

As shown in fig. 2, 3 rivet holes 6 are not in the same straight line, and are arranged in a triangular structure, so that stress concentration is reduced, a suitable fit clearance between a rivet and the rivet hole 6 is selected, the minimum wall thickness b1= b2= b3 from the rivet hole 6 to the edge of the U-shaped side rail 1 is greater than the plane thickness h of the U-shaped side rail 1 at the riveting position, b1, b2 and b3 are greater than the plane thickness h of the U-shaped side rail 1 at the riveting position, riveting strength is increased, and synchronous scrapping of the U-shaped side rail 1 is ensured.

As shown in fig. 3, original 3 rivet holes 6 are distributed on a straight line, and due to the groove 4 arranged on the U-shaped side baffle 1, the wall thickness from the rivet hole 6 to the edge of the U-shaped side baffle 1 is actually h1 instead of h 1', h1 is not equal to h2 and h3, and the minimum wall thickness h1 is smaller than the plane thickness h of the U-shaped side baffle 1 at the riveting part, during riveting, the rivet becomes thick to extrude the weak wall thickness h1 of the U-shaped side baffle 1, so that the fiber tissue of the aluminum alloy material deforms to generate micro cracks, and the hidden danger of fatigue fracture in the later use process is formed.

Claims

1. The utility model provides a side fender structure of rapier weaving machine heald frame mainly comprises U type side fender (1) and driving piece (2), and driving piece (2) clamp on U type side fender (1) tip concave surface (3), its characterized in that: the driving piece (2) is fixedly connected with the U-shaped side baffle (1) through three rivets, and three rivet holes (6) in the U-shaped side baffle (1) are distributed in a triangular mode.

2. The side stop structure of a heald frame for a rapier loom according to claim 1, wherein: the three rivet holes (6) are distributed in an isosceles triangle.

3. The side stop structure of a heald frame for a rapier loom according to claim 1 or 2, wherein: the minimum wall thicknesses from the three rivet holes (6) to the U-shaped side blocking edge are equal and are greater than the thickness of the end concave surface (3).

4. The side stop structure of a heald frame for a rapier loom according to claim 3, wherein: and a top boss (5) is outwards arranged on the inner side of the concave surface (3) at the end part of the side stop matched with the driving piece (2).