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CN-224200557-U - Shutter ladder belt, manufacturing equipment thereof and shutter using shutter ladder belt

CN224200557UCN 224200557 UCN224200557 UCN 224200557UCN-224200557-U

Abstract

The utility model provides a shutter ladder belt, manufacturing equipment thereof and a shutter using the shutter ladder belt, wherein the shutter ladder belt comprises a first longitudinal belt, a second longitudinal belt and a plurality of groups of transverse lines arranged between the first longitudinal belt and the second longitudinal belt, two ends of each group of transverse lines are respectively and fixedly connected with the first longitudinal belt and the second longitudinal belt, and the distance T1 between the connecting points of two adjacent groups of transverse lines and the first longitudinal belt is not equal to the distance T2 between the connecting points of the two adjacent groups of transverse lines and the second longitudinal belt. The utility model compensates the stress difference of the upper and lower blades by arranging the height difference between the intersection points of the two adjacent groups of transverse lines and the two longitudinal strips of the ladder strip, improves the closing degree of the lower part of the shutter, does not need to change other structural parts of the existing shutter, adapts to the existing other structural parts, reduces the improvement cost of the shutter, has simple manufacturing method and low cost, and can improve the existing equipment by manufacturing equipment.

Inventors

  • YU YUTING
  • YU SHAOMING

Assignees

  • 温州润和带业有限公司

Dates

Publication Date
20260505
Application Date
20250407

Claims (9)

  1. 1. A shutter ladder belt comprises a first longitudinal belt, a second longitudinal belt and a plurality of groups of transverse lines arranged between the first longitudinal belt and the second longitudinal belt, wherein two ends of each group of transverse lines are respectively and fixedly connected with the first longitudinal belt and the second longitudinal belt.
  2. 2. A shutter belt as claimed in claim 1, characterized in that the value of the difference Δt between the differences T1 and T2 is kept constant for the whole belt.
  3. 3. The blind ladder strap of claim 1 wherein the top end of the first longitudinal strap and the top end of the second longitudinal strap are connected by a transition section and/or wherein the bottom end of the first longitudinal strap and the bottom end of the second longitudinal strap are connected by a transition section.
  4. 4. The blind ladder strap of claim 1 wherein the ladder strap is woven from polyester yarns.
  5. 5. A device for manufacturing a blind ladder tape according to any one of claims 1-4, comprising a traction roller for respectively carrying out traction at different linear speeds on a first longitudinal tape and a second longitudinal tape of the same ladder tape.
  6. 6. The apparatus for manufacturing a blind ladder tape according to claim 5, wherein the traction roller comprises a first traction roller and a second traction roller coaxially driven, and a diameter D1 of the first traction roller is larger than a diameter D2 of the second traction roller.
  7. 7. The apparatus for manufacturing a blind ladder tape according to claim 5, wherein the traction roller includes a first portion and a second portion having different diameters, and a diameter D1 of the first portion of the traction roller is larger than a diameter D2 of the second portion of the traction roller.
  8. 8. The apparatus for manufacturing a blind ladder tape according to claim 5, wherein a heating roller for heat setting the drawn ladder tape is provided at a position juxtaposed with the drawing roller.
  9. 9. A shutter, characterized in that it uses at least two shutter ladder strips according to any one of claims 1-4 for connecting the slats.

Description

Shutter ladder belt, manufacturing equipment thereof and shutter using shutter ladder belt Technical Field The utility model relates to the technical field of blinds, in particular to a blind ladder belt, a manufacturing method and manufacturing equipment thereof and a blind using the blind ladder belt. Background The shutter is widely used because it can meet the requirements of shading, semi-shading and lighting at the same time. The shutter mainly comprises an upper beam, a lower beam and a plurality of blades between the upper beam and the lower beam, wherein the blades are connected by lifting ropes or ladder belts. In general, ladder tapes have a higher strength and are widely used to improve the life of a blind. The single ladder belt comprises two long strip-shaped longitudinal belts with certain width and a plurality of groups of transverse lines arranged between the two longitudinal belts, and each group of transverse lines is generally provided with two transverse lines. The blades of the shutter are connected through at least two ladder belts, and a single blade passes through two transverse grid lines of each ladder belt at corresponding positions and is fixedly connected. When the ladder is used, the longitudinal belts on the same side of the blades in each ladder belt move up and down relative to the longitudinal belts on the other side of the blades, so that the blades can be driven to rotate, and the use states of shading, semi-shading and daylighting are formed. Currently, in order to achieve the purpose of simultaneously producing a plurality of ladder tapes on the same machine, the ladder tapes on the market all adopt a contour design, as shown in fig. 1, that is, for two adjacent groups of transverse parting lines 2, the distance L1 between the intersection points of the transverse parting lines and the first longitudinal tape 11 of a certain ladder tape is equal to the distance L2 between the intersection points of the transverse parting lines and the other longitudinal tape 12 of the certain ladder tape. The ladder belt with equal height design is theoretically, when the blades are turned over, the inclined angle of each grid of the ladder belt is consistent, and when the blades are turned over to a limit angle, the shutter can be completely closed. However, in practical application, due to the action of gravity, the tensions of the blades at different positions are different, and the tension of the blade at the position higher is larger, so that when the blade is turned over, the inclination angles of each lattice of the ladder belt are different, the turning angles of the blades are smaller, and finally the shutter is closed inaccurately and light leakage is caused at the position lower, particularly when the blade is turned over to a limiting angle. The problems of the blind window being not tightly closed and light leakage can lead to the increased risk of privacy leakage when the blind window is applied to places with higher privacy requirements such as offices, houses, bathrooms and the like. Disclosure of utility model In order to solve at least one of the technical problems, the utility model provides a shutter ladder belt, a manufacturing device thereof and a shutter using the shutter ladder belt, so as to compensate the stress difference of upper and lower blades of the shutter and further improve the closing degree of the lower part of the shutter. The first aspect of the utility model provides a shutter ladder belt, which comprises a first longitudinal belt, a second longitudinal belt and a plurality of groups of transverse lines arranged between the first longitudinal belt and the second longitudinal belt, wherein two ends of each group of transverse lines are respectively and fixedly connected with the first longitudinal belt and the second longitudinal belt, and for two adjacent groups of transverse lines, the distance T1 between the connecting points of the transverse lines and the first longitudinal belt is not equal to the distance T2 between the connecting points of the transverse lines and the second longitudinal belt. Preferably, the value of the difference Δt between T1 and T2 (Δt=t1-T2) remains unchanged for the entire ladder strap. In any of the above aspects, it is preferable that the top end of the first longitudinal belt and the top end of the second longitudinal belt are connected by a transition section, and/or the bottom end of the first longitudinal belt and the bottom end of the second longitudinal belt are connected by a transition section. In any of the above aspects, preferably, two transverse lines are provided for each group. In any of the above aspects, it is preferable that the ladder strap is woven with polyester yarns. A second aspect of the present utility model provides a manufacturing apparatus for manufacturing a blind ladder tape, including a traction roller that performs traction at different linear speeds for a first longitudinal tape an