Louver ladder belt, manufacturing method and manufacturing equipment thereof and shutter using shutter ladder belt

Abstract

The invention provides a blind window ladder belt, a manufacturing method and manufacturing equipment thereof and a blind window using the blind window ladder belt, the blind window ladder belt comprises a first longitudinal belt, a second longitudinal belt and a plurality of groups of transverse separation lines located between the first longitudinal belt and the second longitudinal belt, the two ends of each group of transverse separation lines are fixedly connected with the first longitudinal belt and the second longitudinal belt respectively, 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 invention, the stress difference of the upper and lower blades is compensated by setting 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, and 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] The present invention relates to the technical field of blinds, and particularly to a blind ladder belt, a manufacturing method thereof, manufacturing equipment, and a blind using the same. Background Art

[0002] Blinds are widely used because they can simultaneously meet the requirements of light shading, semi-light shading, and daylighting. A blind mainly consists of an upper beam, a lower beam, and a plurality of vanes between the upper and lower beams, and the plurality of vanes are connected by lifting ropes or ladder belts. Usually, due to the higher strength of the ladder belt and the ability to improve the service life of the blind, it is more widely used.

[0003] A single ladder belt includes two long strip-shaped longitudinal belts with a certain width and a plurality of groups of cross partition lines arranged between the two longitudinal belts. Generally, each group of cross partition lines is provided with two. The vanes of the blind are connected by at least two ladder belts, and a single vane is fixedly connected after passing through two cross partition lines at corresponding positions of each ladder belt. When in use, by moving the longitudinal belt on the same side of the vane in each ladder belt up and down relative to the longitudinal belt on the other side of the vane, the vane can be driven to rotate, forming the use states of light shading, semi-light shading, and daylighting.

[0004] Currently, in order to achieve the purpose of simultaneously producing multiple ladder belts on the same machine, the ladder belts on the market all adopt an equal height design, as Figure 1 shown, that is, for two adjacent groups of cross partition lines 2, the distance L1 between the intersection point of the first longitudinal belt 11 of a certain ladder belt and the intersection point of the other longitudinal belt 12 of this ladder belt is equal.

[0005] For the ladder belt with an equal height design, theoretically, when the vane flips, the inclination angle of each grid of the ladder belt is the same. When the vane flips to the limit angle, the blind can be completely closed. However, in actual application, due to the action of gravity, the tensions of the vanes at different positions are different, and the tension of the vane at a higher position is greater. As a result, when the vane flips, the inclination angles of each grid of the ladder belt are different, and then the flipping angles of the vanes also show differences. The flipping angle of the vane at a lower position is smaller, and finally, the problem of incomplete closing and light leakage occurs at the lower position of the blind, especially when the vane flips to the limit angle. The problems of incomplete closing and light leakage of the blind will increase the risk of privacy leakage when it is applied to places with high privacy requirements such as offices, residences, and bathrooms. Summary of the Invention

[0006] To solve at least one of the above technical problems, the present invention provides a blind ladder belt, a manufacturing method thereof, manufacturing equipment, and a blind using the same, so as to compensate for the force difference of the upper and lower vanes of the blind, and further improve the closing degree of the lower part of the blind.

[0007] The first aspect of the present invention provides a louver ladder tape, which includes a first longitudinal tape, a second longitudinal tape, and a plurality of sets of cross lines located between the first longitudinal tape and the second longitudinal tape. The two ends of each set of cross lines are fixedly connected to the first longitudinal tape and the second longitudinal tape respectively. For two adjacent sets of cross lines, the distance T1 between the connection points of the first longitudinal tape is not equal to the distance T2 between the connection points of the second longitudinal tape.

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

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

[0010] Preferably, in any of the above solutions, each set of cross lines is provided with two.

[0011] Preferably, in any of the above solutions, the ladder tape is woven with polyester yarn.

[0012] The second aspect of the present invention provides a manufacturing method of a louver ladder tape for manufacturing the louver ladder tape, including: when the woven ladder tape is pulled by a traction roller, the pulling linear speeds of the first longitudinal tape and the second longitudinal tape of the same ladder tape are different.

[0013] Preferably, the first longitudinal tape and the second longitudinal tape of the same ladder tape are respectively pulled by a first traction roller and a second traction roller with the same angular velocity, and the diameter D1 of the first traction roller is greater than the diameter D2 of the second traction roller.

[0014] Preferably, in any of the above solutions, the first longitudinal tape and the second longitudinal tape of the same ladder tape 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 greater than the diameter D2 of the second part of the traction roller.

[0015] Preferably, in any of the above solutions, before the ladder tape is pulled by the traction roller, the first longitudinal tape and the second longitudinal tape are woven by the same weaving method.

[0016] Preferably, in any of the above solutions, the ladder tape is subjected to heat setting treatment after being pulled by the traction roller.

[0017] The third aspect of the present invention provides a manufacturing device of a louver ladder tape for manufacturing the louver ladder tape by implementing the manufacturing method of the louver ladder tape, including a traction roller, and the traction roller pulls the first longitudinal tape and the second longitudinal tape of the same ladder tape at different linear speeds respectively.

[0018] Preferably, the traction roller includes a first traction roller and a second traction roller that are coaxially driven, and the diameter D1 of the first traction roller is greater than the diameter D2 of the second traction roller.

[0019] Preferably, in any of the above solutions, the traction roller includes a first part and a second part with different diameters, and 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.

[0020] Preferably, in any of the above solutions, a heating roller is arranged at a position parallel to the traction roller, and is used for thermally setting the ladder belt after traction.

[0021] The fourth aspect of the present invention provides a shutter, which uses at least two of the shutter ladder belts to connect the blades.

[0022] The shutter ladder belt of the present invention, its manufacturing method, manufacturing equipment, and the shutter using it have the following beneficial effects:

[0023] 1. By setting the height difference between the intersections of two adjacent sets of horizontal dividing lines and the two longitudinal belts of the ladder belt, the difference in the forces on the upper and lower blades can be compensated, thereby improving the closing degree of the lower part of the shutter;

[0024] 2. There is no need to change the structures of other components of the existing shutter, such as guide rails, blades, etc., that is, the ladder belt is adapted to other structural components of the existing shutter, greatly reducing the cost of improving the shutter;

[0025] 3. The manufacturing method is simple, and the manufacturing equipment can be improved by modifying the existing ladder belt production equipment, with low production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of a shutter ladder belt in the prior art.

[0027] Figure 2 It is a schematic structural diagram of a preferred embodiment of the shutter ladder belt according to the present invention.

[0028] Figure 3 It is a schematic structural diagram of a preferred embodiment of the traction roller of the shutter ladder belt manufacturing equipment according to the present invention.

[0029] Figure 4 It is a schematic structural diagram of another embodiment of the traction roller of the shutter ladder belt manufacturing equipment according to the present invention.

[0030] Figure 5 It is an upper part closing effect diagram of the shutter according to the present invention.

[0031] Figure 6The middle closing effect diagram of the shutter according to the present invention.

[0032] Figure 7 The lower closing effect diagram of the shutter according to the present invention. Detailed implementation manners

[0033] To better understand the present invention, the present invention will be described in detail below in conjunction with specific embodiments.

[0034] Embodiment 1

[0035] As Figure 2 shown, a shutter ladder belt includes a first longitudinal belt 11, a second longitudinal belt 12, and a plurality of groups of cross lines 2 located between the first longitudinal belt 11 and the second longitudinal belt 12. The two ends of each group of the cross lines 2 are respectively fixedly connected to the first longitudinal belt 11 and the second longitudinal belt 12. For two adjacent groups of cross lines 2, the distance T1 between the connection points with the first longitudinal belt 11 is not equal to the distance T2 between the connection points with the second longitudinal belt 12.

[0036] Preferably in this embodiment, for the entire ladder belt, the value of the difference ΔT (ΔT = T1 - T2) between T1 and T2 remains unchanged. It should be noted that the value of the difference ΔT can be adaptively adjusted according to blade size, applicable scenarios, usage requirements, etc. As an example, the difference ΔT can be set to 0.5 mm, or 1.2% * T1, or other values that meet the requirements.

[0037] More preferably in this embodiment, the top ends of the first longitudinal belt 11 and the second longitudinal belt 12 are connected by a transition section, and / or the bottom ends of the first longitudinal belt 11 and the second longitudinal belt 12 are connected by a transition section. Figure 2 It shows that the bottom ends of the first longitudinal belt 11 and the second longitudinal belt 12 are connected by a transition section 3. The transition section 3 is used to connect with the bottom beam of the shutter and is used to balance the length difference between the first longitudinal belt 11 and the second longitudinal belt 12 formed due to the accumulation of ΔT. It should be noted that when a transition section is provided at the top end of the ladder belt, it can be connected to the top beam of the shutter through the transition section. It should be further noted that the difference in the connection positions of the first longitudinal belt and the second longitudinal belt with the top beam of the shutter can be used to balance the situation that the lower part of the shutter has weaker light transmission under the lighting state due to the accumulation of ΔT.

[0038] Preferably in this embodiment, each group of the cross lines 2 is provided with two, and the blade is fixed through the middle of the two cross lines 2.

[0039] Preferably in this embodiment, the ladder belt is woven with polyester yarn.

[0040] Embodiment 2

[0041] A manufacturing method of a louver ladder belt for manufacturing the louver ladder belt, including: when a woven ladder belt is tractioned by a traction roller, the traction wire speeds of the first longitudinal belt 11 and the second longitudinal belt 12 of the same ladder belt are different.

[0042] Preferably in this embodiment, the first longitudinal belt 11 and the second longitudinal belt 12 of the same ladder belt are respectively tractioned by a first traction roller and a second traction roller with the same angular velocity, and the diameter D1 of the first traction roller is greater than the diameter D2 of the second traction roller.

[0043] More preferably in this embodiment, before the ladder belt is tractioned by the traction roller, the first longitudinal belt 11 and the second longitudinal belt 12 are woven with the same weaving parameters. It should be noted that the same weaving parameters include but are not limited to the same number of turns, the same stitch pitch, the same weaving accuracy, the same yarn specification, the same weaving method, etc.

[0044] Even more preferably in this embodiment, the ladder belt is heat-treated and shaped after being tractioned by the traction roller.

[0045] A manufacturing device of a louver ladder belt for manufacturing the louver ladder belt by implementing the manufacturing method of the louver ladder belt, including a traction roller, and the traction roller respectively tractiones the first longitudinal belt 11 and the second longitudinal belt 12 of the same ladder belt at different linear speeds.

[0046] Preferably in this embodiment, as Figure 3 shown, the traction roller includes a first traction roller 41 and a second traction roller 42 driven coaxially, and the diameter D1 of the first traction roller 41 is greater than the diameter D2 of the second traction roller 42. It should be noted that the value of the difference ΔD (ΔD = D1 - D2) between the diameter D1 and the diameter 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 arranged at a position side by side with the traction roller for heat-setting the tractioned ladder belt.

[0047] Figure 3The first traction roller 41 and the second traction roller 42 are arranged side by side on the same drive shaft 43 and are driven by the drive shaft 43 to rotate. Therefore, the angular velocity of the rotation of the first traction roller 41 is the same as that of the second traction roller 42. At the same time, due to the difference in their diameters, the linear velocities of the first longitudinal belt 11 and the second longitudinal belt 12 being pulled by them are different. Since the first longitudinal belt 11 and the second longitudinal belt 12 are woven with 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 at different linear velocities, the first longitudinal belt 11 is stretched to a greater extent relative to the second longitudinal belt 12, so that the value of T1 is greater than the value of T2. After heat treatment and shaping by the heating roller 6, the difference ΔT between T1 and T2 is fixed, and finally the said louver ladder belt is obtained. It should be noted that since the ladder belt is woven with polyester yarn, under the heating of the heating roller 6, the surface of the polyester molecules will be rearranged and shaped, and the effect of heat setting treatment is good.

[0048] It should be noted that in the prior art, the production equipment for ladder belts all pursues the height 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 production equipment for the said louver ladder belt in this application can be improved by modifying the existing ladder belt production equipment and setting the traction roller and heating roller described in this application, with low production cost.

[0049] Embodiment 3

[0050] This embodiment is similar to the foregoing embodiments. The difference is that in this embodiment, preferably, in the manufacturing method of the said 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 greater than the diameter D2 of the second part of the traction roller.

[0051] Reflected on the production equipment of the said louver ladder belt, as Figure 4 shown, the traction roller includes a first part 51 and a second part 52 with different diameters, and the diameter D1 of the first part 51 of the traction roller is greater than the diameter D2 of the second part 52 of the traction roller. At the same time, in order to enable a single piece of equipment to complete the production of multiple said louver ladder belts simultaneously, in this embodiment, preferably, as Figure 4 shown, there are multiple groups of first parts 51 and second parts 52 with different diameters arranged in sequence on the traction roller, and the heating roller 6 is arranged side by side with the traction roller for simultaneously pulling and heat setting multiple ladder belts.

[0052] Embodiment 4

[0053] A louver uses at least two said louver ladder belts to connect the blades.

[0054] Due to the existence of ΔT, the force difference between the upper and lower blades is well compensated. When the blades of the louver are flipped, the closing degree of the lower part of the louver is still very good.

[0055] This was verified in this embodiment. In this verification, the value of T1 was set to 44.5 mm, the value of T2 was set to 44 mm, and when the blades did not flip, the horizontal distance between the first longitudinal band 11 and the second longitudinal band 12 was set to 54 mm. Considering that when the blades are flipped to the maximum extent, users are most concerned about the closing degree of the louver, in this embodiment, the maximum flipping of the blades was used for verification. When the blades are flipped to the maximum extent, as Figures 5 to 7 shown are the pictures of the closing degrees of the upper, middle, and lower parts of the louver respectively. It can be found that the closing degree of the lower part of the louver is very good, and the risk of privacy leakage is greatly reduced.

[0056] It should be noted that the dimensions involved in this embodiment are only for illustrative purposes. In actual applications, the values of T1, T2, and the horizontal distance between the first longitudinal band and the second longitudinal band can be adjusted as needed.

[0057] The improvement of the closing degree of the lower part of the louver does not require structural changes to other components of the louver, such as guide rails, blades, etc. That is, the ladder belt adapts to other structural components of the existing louver, greatly reducing the cost of improving the louver.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the foregoing embodiments have described the present invention in detail, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features, and these replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present invention.

Claims

1. A louver ladder belt, comprising a first longitudinal belt, a second longitudinal belt, and a plurality of groups of cross lines located between the first longitudinal belt and the second longitudinal belt, wherein two ends of each group of the cross lines are fixedly connected to the first longitudinal belt and the second longitudinal belt respectively, and the louver ladder belt is characterized in that: For two adjacent sets of cross lines, the distance T1 between the connection points of the cross lines and the first longitudinal band is not equal to the distance T2 between the connection points of the cross lines and the second longitudinal band.

2. The louver ladder belt according to claim 1, characterized in that: For the entire ladder band, the value of the difference ΔT between the differences T1 and T2 remains unchanged.

3. The louver ladder belt according to claim 1, characterized in that: The top end of the first longitudinal band and the top end of the second longitudinal band are connected by a transition section, and / or the bottom end of the first longitudinal band and the bottom end of the second longitudinal band are connected by a transition section.

4. The louver ladder belt according to claim 1, characterized in that: The ladder band is woven with polyester yarn.

5. A manufacturing method of a louver ladder belt, characterized in that: For manufacturing the louver ladder band according to any one of claims 1-4, including: when the woven ladder band is tractioned by a traction roller, the traction linear speeds of the first longitudinal band and the second longitudinal band of the same ladder band are different.

6. The manufacturing method of the shutter ladder belt according to claim 5, characterized in that: The first longitudinal band and the second longitudinal band of the same ladder band are respectively tractioned by a first traction roller and a second traction roller with the same angular velocity, and the diameter D1 of the first traction roller is greater than the diameter D2 of the second traction roller.

7. The manufacturing method of the louver ladder belt according to claim 5, characterized in that: The first longitudinal band and the second longitudinal band of the same ladder band are respectively tractioned 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 greater than the diameter D2 of the second part of the traction roller.

8. The manufacturing method of the louvered ladder belt according to claim 5, characterized in that: Before the ladder band is tractioned by the traction roller, the first longitudinal band and the second longitudinal band are woven by the same weaving method; after the ladder band is tractioned by the traction roller, it is subjected to heat setting treatment.

9. A manufacturing device for a louvered ladder belt, characterized in that: For implementing the manufacturing method of the louver ladder band according to any one of claims 5-8 to manufacture the louver ladder band according to any one of claims 1-4, including a traction roller, and the traction roller tractiones the first longitudinal band and the second longitudinal band of the same ladder band at different linear speeds respectively.

10. A kind of blind, characterized in that: It uses at least two louver ladder bands according to any one of claims 1-4 to connect the vanes.

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