Louver ladder belt, manufacturing equipment thereof and louver using louver ladder belt

Abstract

The utility model provides a blind window ladder belt, its manufacturing equipment and blind window using the same, the blind window ladder belt comprises a first longitudinal belt, a second longitudinal belt and a plurality of groups of horizontal separation lines located between the first longitudinal belt and the second longitudinal belt, the two ends of each group of horizontal separation lines are respectively fixedly connected with the first longitudinal belt and the second longitudinal belt, and the first longitudinal belt is fixedly connected with the second longitudinal belt. For two adjacent groups of transverse separation lines, the distance T1 between the connection points of the transverse separation lines and the first longitudinal belt is not equal to the distance T2 between the transverse separation lines and the connection points of the transverse separation lines and the second longitudinal belt. According to the utility model, the stress difference of the upper blade and the lower blade is compensated through the height difference between the intersection points of the two adjacent groups of transverse separation lines and the two longitudinal belts of the ladder belts, so that the closing degree of the lower part of the shutter is improved; other structural components of an existing shutter do not need to be changed, the shutter is matched with other existing structural components, and the improvement cost of the shutter is reduced; the manufacturing method is simple, and the manufacturing equipment can be obtained by improving the existing equipment, so that the cost is low.

Description

Technical Field

[0001] This utility model relates to the field of louver technology, specifically to a louver ladder, its manufacturing method, manufacturing equipment, and a louver using the same. Background Technology

[0002] Venetian blinds are widely used because they can simultaneously meet the needs of shading, partial shading, and light transmission. Venetian blinds mainly consist of an upper beam, a lower beam, and several slats between the upper and lower beams, with the slats connected by a rope or ladder strap. Generally, ladder straps are more widely used because they are stronger and can extend the lifespan of the blinds.

[0003] A single ladder strip consists of two long, narrow longitudinal strips of a certain width, and several sets of horizontal grid lines placed between the two longitudinal strips. Each set of horizontal grid lines typically has two lines. The slats of the venetian blind are connected by at least two ladder strips, and each slat is fixed after passing through the two horizontal grid lines at the corresponding positions on each ladder strip. In use, moving the longitudinal strip on the same side of the slat relative to the longitudinal strip on the other side of the slat causes the slat to rotate, creating different lighting modes: shading, partial shading, and light transmission.

[0004] Currently, in order to enable the simultaneous production of multiple ladder belts on the same machine, ladder belts on the market all adopt an equal height design, such as... Figure 1 As shown, for two adjacent sets of transverse diaphragms 2, the distance L1 between their intersection with the first longitudinal strip 11 of a certain ladder is equal to the distance L2 between their intersection with the other longitudinal strip 12 of that ladder.

[0005] Theoretically, with a stepped design of equal height, the slats of a Venetian blind should tilt at a consistent angle when the slats rotate, allowing for complete closure. However, in practice, gravity causes uneven tension on the slats at different positions, with higher slats exhibiting greater tension. This results in varying tilt angles across the stepped design, leading to differences in the slat rotation angles. Lower slats rotate at smaller angles, ultimately causing incomplete closure and light leakage at the lower parts of the blind, especially when the slats are rotated to their maximum angle. This incomplete closure and light leakage increase the risk of privacy breaches when used in offices, residences, bathrooms, and other spaces where privacy is paramount. Utility Model Content

[0006] To solve at least one of the above technical problems, this utility model provides a louver ladder, its manufacturing equipment, and a louver using the same, so as to compensate for the force difference between the upper and lower blades of the louver and thereby improve the closure of the lower part of the louver.

[0007] The first aspect of this utility model provides a louvered ladder belt, including a first longitudinal belt, a second longitudinal belt, and a plurality of transverse diaphragms located between the first longitudinal belt and the second longitudinal belt. The two ends of each set of transverse diaphragms are fixedly connected to the first longitudinal belt and the second longitudinal belt, respectively. For two adjacent sets of transverse diaphragms, the distance T1 between their connection points with the first longitudinal belt is not equal to the distance T2 between their connection points with the second longitudinal belt.

[0008] Preferably, the difference ΔT (ΔT=T1-T2) between T1 and T2 remains constant for the entire ladder.

[0009] Preferably, in any of the above embodiments, the top ends of the first longitudinal strip and the second longitudinal strip are connected by a transition section, and / or the bottom ends of the first longitudinal strip and the second longitudinal strip are connected by a transition section.

[0010] Preferably, each of the above schemes has two transverse diaphragms.

[0011] Preferably, in any of the above embodiments, the ladder belt is woven from polyester yarn.

[0012] The second aspect of this utility model provides a device for manufacturing louvered ladder belts, which includes a traction roller that pulls a first longitudinal belt and a second longitudinal belt of the same ladder belt at different linear speeds.

[0013] Preferably, the traction roller includes a first traction roller and a second traction roller driven coaxially, wherein the diameter D1 of the first traction roller is larger than the diameter D2 of the second traction roller.

[0014] In any of the above embodiments, the traction roller includes a first part and a second part with different diameters, wherein the diameter D1 of the first part of the traction roller is greater than the diameter D2 of the second part of the traction roller.

[0015] Preferably, in any of the above embodiments, a heating roller is provided at a position parallel to the traction roller for heat-setting the traction belt.

[0016] A third aspect of this invention provides a louver that uses at least two louver ladder straps to connect the blades.

[0017] The louver ladder belt, its manufacturing equipment, and the louver using it of this utility model have the following beneficial effects:

[0018] 1. By setting the height difference between the intersection points of two adjacent sets of horizontal diaphragms and the two longitudinal strips of the ladder, the difference in force on the upper and lower blades can be compensated, thereby improving the closure of the lower part of the louver.

[0019] 2. No structural changes are required to other structural components of existing venetian blinds, such as guide rails and blades. In other words, the ladder belt is compatible with other structural components of existing venetian blinds, which greatly reduces the cost of modifying venetian blinds.

[0020] 3. The manufacturing method is simple, and the manufacturing equipment can be improved from existing ladder belt production equipment, resulting in low production costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a louvered ladder in the prior art.

[0022] Figure 2 This is a schematic diagram of a preferred embodiment of the louvered ladder belt according to the present invention.

[0023] Figure 3 This is a schematic diagram of a preferred embodiment of the traction roller of the louver ladder belt manufacturing equipment according to the present invention.

[0024] Figure 4 This is a schematic diagram of another embodiment of the traction roller of the louver ladder belt manufacturing equipment according to the present invention. Detailed Implementation

[0025] To better understand this utility model, the following detailed description is provided in conjunction with specific embodiments.

[0026] Example 1

[0027] like Figure 2 As shown, a louvered ladder belt includes a first longitudinal belt 11, a second longitudinal belt 12, and several sets of transverse diaphragms 2 located between the first longitudinal belt 11 and the second longitudinal belt 12. The two ends of each set of transverse diaphragms 2 are fixedly connected to the first longitudinal belt 11 and the second longitudinal belt 12, respectively. For two adjacent sets of transverse diaphragms 2, the distance T1 between their connection points with the first longitudinal belt 11 is not equal to the distance T2 between their connection points with the second longitudinal belt 12.

[0028] In this embodiment, it is preferred that the difference ΔT (ΔT=T1-T2) between T1 and T2 remains unchanged for the entire ladder belt. It should be noted that the value of the difference ΔT can be adaptively adjusted according to the blade size, applicable scenario, usage requirements, etc. For example, the difference ΔT can be set to 0.5mm, or 1.2%*T1, or other values ​​that meet the requirements.

[0029] In this embodiment, it is further preferred that the top end of the first longitudinal strip 11 and the top end of the second longitudinal strip 12 are connected by a transition section, and / or the bottom end of the first longitudinal strip 11 and the bottom end of the second longitudinal strip 12 are connected by a transition section. Figure 2The bottom ends of the first longitudinal strip 11 and the second longitudinal strip 12 are connected by a transition section 3. This transition section 3 connects to the bottom beam of the louver and balances the length difference between the first and second longitudinal strips 11 and 12 caused by the accumulation of ΔT. It should be noted that when a transition section is provided at the top of the tiered strip, it can connect to the top beam of the louver through this transition section. Furthermore, the positional difference between the connections of the first and second longitudinal strips to the top beam of the louver can balance the situation where the lower part of the louver is less light-transmitting under lighting conditions due to the accumulation of ΔT.

[0030] In this embodiment, preferably, each group of transverse diaphragms 2 is provided with two, and the blade passes through the middle of the two transverse diaphragms 2 for fixation.

[0031] In this embodiment, it is preferred that the ladder belt is woven from polyester yarn.

[0032] Example 2

[0033] A method for manufacturing a louvered ladder belt, comprising: when the woven ladder belt is pulled by a traction roller, the traction linear speeds of the first longitudinal belt 11 and the second longitudinal belt 12 of the same ladder belt are different.

[0034] In this embodiment, preferably, the first longitudinal belt 11 and the second longitudinal belt 12 of the same ladder belt are pulled by the first traction roller and the second traction roller with the same angular velocity, respectively, and the diameter D1 of the first traction roller is larger than the diameter D2 of the second traction roller.

[0035] In this embodiment, it is further preferred that the first longitudinal belt 11 and the second longitudinal belt 12 are woven using the same weaving parameters before the ladder belt is pulled by the traction roller. It should be noted that the same weaving parameters include, but are not limited to, the same number of turns, the same stitch length, the same weaving precision, the same yarn specifications, and the same knitting method.

[0036] In this embodiment, it is further preferred that the ladder belt undergoes heat treatment for shaping after being pulled by the traction roller.

[0037] A device for manufacturing louvered ladder belts, used to perform the manufacturing method of the louvered ladder belts to manufacture the louvered ladder belts, includes a traction roller, wherein the traction roller tractions the first longitudinal belt 11 and the second longitudinal belt 12 of the same ladder belt at different linear speeds.

[0038] In this embodiment, it is preferred that, as Figure 3As shown, the traction rollers include a first traction roller 41 and a second traction roller 42 driven coaxially. The diameter D1 of the first traction roller 41 is larger than the diameter D2 of the second traction roller 42. It should be noted that the difference ΔD (ΔD=D1-D2) between diameters D1 and D2 is related to T1 and T2, and can be specifically expressed as ΔD=D1*ΔT / T1=D2*ΔT / T2. A heating roller 6 is provided parallel to the traction rollers for heat-setting the traction belt.

[0039] Figure 3 The first traction roller 41 and the second traction roller 42 are arranged side by side on the same drive shaft 43 and are driven to rotate by the drive shaft 43. Therefore, the angular velocity of the first traction roller 41 is the same as that of the second traction roller 42. However, due to the difference in their diameters, the linear velocities at which they pull the first longitudinal belt 11 and the second longitudinal belt 12 are different. Since the first longitudinal belt 11 and the second longitudinal belt 12 are woven using the same weaving parameters, their lengths are the same before being pulled by the first traction roller 41 and the second traction roller 42, respectively. After being pulled by different linear velocities, the first longitudinal belt 11 is stretched more than the second longitudinal belt 12, resulting in a value of T1 greater than T2. ​​After heat treatment and shaping by the heating roller 6, the difference ΔT between T1 and T2 is fixed, ultimately yielding the louver ladder belt. It should be noted that since the ladder belt is woven from polyester yarn, the surface of the polyester molecules will rearrange and reshape under the heating of the heating roller 6, resulting in a good heat-setting effect.

[0040] It should be noted that in the prior art, the production equipment for ladder belts all pursues the high consistency of the two longitudinal belts. Therefore, the weaving parameters of the two longitudinal belts are set to be the same. Based on this, the louver ladder belt manufacturing equipment described in this application can be improved by setting the traction roller and heating roller described in this application, which results in low production cost.

[0041] Example 3

[0042] This embodiment is similar to the previous embodiment, except that, in this embodiment, it is preferred that, in the manufacturing method of the louver ladder belt, the first longitudinal belt 11 and the second longitudinal belt 12 of the same ladder belt are respectively pulled by the first part and the second part of the same traction roller, and the diameter D1 of the first part of the traction roller is larger than the diameter D2 of the second part of the traction roller.

[0043] This is reflected in the manufacturing equipment of the aforementioned louvered ladder belt, such as... Figure 4As shown, the traction roller includes a first part 51 and a second part 52 with different diameters. The diameter D1 of the first part 51 is larger than the diameter D2 of the second part 52. Furthermore, in order for the same machine to simultaneously manufacture multiple louvered ladder belts, in this embodiment, it is preferable to... Figure 4 As shown, multiple sets of first sections 51 and second sections 52 with different diameters are arranged sequentially on the traction roller. The heating roller 6 is arranged side by side with the traction roller and is used to simultaneously traction and heat-set multiple ladder belts.

[0044] Example 4

[0045] A type of blind that uses at least two blind ladders to connect the blades.

[0046] Because the presence of ΔT effectively compensates for the force difference between the upper and lower blades, the closure of the lower part of the louver remains excellent when the blades of the louver are flipped.

[0047] This embodiment verified the following: T1 was set to 44.5 mm, T2 was set to 44 mm, and the horizontal distance between the first longitudinal strip 11 and the second longitudinal strip 12 was set to 54 mm when the slats did not flip. Considering that users are most concerned about the degree of closure of the blinds when the slats are flipped to their maximum extent, this embodiment used the maximum flipping of the slats for verification. When the slats are flipped to their maximum extent, the closure of the lower part of the blinds is very good, and the risk of privacy leakage is greatly reduced.

[0048] It should be noted that the dimensions involved in this embodiment are only illustrative examples. In actual applications, the values ​​of T1, T2, and the horizontal distance between the first and second longitudinal strips can be adjusted as needed.

[0049] The improved closure of the lower part of the blinds does not require structural changes to other components of the blinds, such as guide rails and blades. In other words, the ladder belt is compatible with other existing structural components of the blinds, which greatly reduces the cost of improving the blinds.

[0050] It should be noted that the technical solutions of this application involve improvements in hardware and not software. For parts without specified models, any commonly used components in the prior art can be selected without model limitation. For components with specified models in the embodiments, they are only used to illustrate the technical solutions of this application in detail. It should be understood that the technical solutions to be protected by this utility model are not limited to these models, and there are many alternatives to these components in the prior art.

[0051] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the foregoing embodiments have described this utility model in detail, those skilled in the art should understand that modifications can be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. However, these substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this utility model.

Claims

1. A louvered ladder belt, comprising a first longitudinal belt, a second longitudinal belt, and a plurality of sets of transverse diaphragms located between the first and second longitudinal belts, wherein both ends of each set of transverse diaphragms are fixedly connected to the first longitudinal belt and the second longitudinal belt, respectively, characterized in that: For two adjacent sets of transverse diaphragms, the distance T1 between their connection point with the first longitudinal strip is not equal to the distance T2 between their connection point with the second longitudinal strip.

2. The louvered ladder as described in claim 1, characterized in that: For the entire ladder, the value of the difference ΔT between the differences T1 and T2 remains unchanged.

3. The louvered ladder as described in claim 1, characterized in that: The top ends of the first longitudinal strip and the top ends of the second longitudinal strip are connected by a transition section, and / or the bottom ends of the first longitudinal strip and the bottom ends of the second longitudinal strip are connected by a transition section.

4. The louvered ladder as described in claim 1, characterized in that: The ladder belt is woven from polyester yarn.

5. A manufacturing device for louvered ladder belts, characterized in that: For manufacturing a louvered ladder belt as described in any one of claims 1-4, a traction roller is included, wherein the traction roller pulls a first longitudinal belt and a second longitudinal belt of the same ladder belt at different linear speeds.

6. The equipment for manufacturing louvered ladders as described in claim 5, characterized in that: The traction roller includes a first traction roller and a second traction roller driven coaxially, wherein the diameter D1 of the first traction roller is larger than the diameter D2 of the second traction roller.

7. The equipment for manufacturing louvered ladders as described in claim 5, characterized in that: The traction roller includes a first part and a second part with different diameters, wherein the diameter D1 of the first part of the traction roller is greater than the diameter D2 of the second part of the traction roller.

8. The equipment for manufacturing louvered ladders as described in claim 5, characterized in that: A heating roller is provided at a position parallel to the traction roller for heat setting the ladder belt after traction.

9. A type of venetian blind, characterized in that: It uses at least two louver ladders as described in any one of claims 1-4 to connect the blades.

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