JP5608414B2 - Ladder cord manufacturing apparatus and ladder cord manufacturing method for horizontal blind - Google Patents

Description

  The present invention relates to a manufacturing apparatus for manufacturing a ladder cord for a horizontal blind in which the pitch of the weft is different between the front and back warps.

  The horizontal blind is supported by a ladder cord suspended from the head box, and a plurality of slats are supported. By rotating each slat in the same phase via the tilt device and the ladder cord in the head box, The amount of light extraction can be adjusted.

  In such a horizontal blind, if the slat is horizontal and the amount of light collected in the room is sufficiently secured, it is too bright due to direct light near the window, or indoor privacy cannot be secured.

On the other hand, if the slats are closed to alleviate the glare at the window and ensure privacy, sufficient light intensity cannot be ensured except at the window.
Therefore, from the top to the bottom of the ladder cord, the angle of the slats was gradually closed to alleviate the glare at the window, ensure privacy, and ensure sufficient light intensity inside the room. Horizontal blinds have been proposed.

  Patent Document 1 discloses a ladder cord manufacturing apparatus that supports a slat so that it gradually closes from an upper stage to a lower stage.

Japanese Patent No. 3558939

  The manufacturing apparatus disclosed in Patent Document 1 can make the pitch of the weft yarn in one warp yarn of the ladder cord longer than the pitch of the weft yarn in the other warp yarn. However, since the pitch difference is set based on the difference in diameter of one processing roller, a plurality of types of ladder cords having different pitch differences cannot be easily manufactured.

  An object of the present invention is to provide a ladder cord manufacturing apparatus capable of easily manufacturing a plurality of types of ladder cords having different weft pitch differences in each warp yarn of the ladder cord.

In Claim 1, the 1st metal mold | die which shape | molds the pitch of the weft in one warp yarn of a ladder cord and the 2nd metal mold | die which shape | molds the pitch of the weft yarn in the other warp yarn of the said ladder cord are made independent. Bei example, the first mold includes a first heating means for heating the warp side of the one, and the first heating means together with the second mold to heat the other warp side Te Was equipped with an independent second heating means .

In Claim 2, said 1st metal mold | die is formed in the roller part which engages with the weft yarn of the said ladder cord, and transfers this ladder cord, and forms the said pitch with said one warp yarn. A molding tooth mold, and the second mold is formed on the roller portion that engages with the weft yarn of the ladder cord and transfers the ladder cord, and the other warp yarn further comprising a molding tooth die for molding the pitch.

According to a third aspect of the present invention, the roller portion is formed of a material having high thermal conductivity on the side heated by the heating means.
In Claim 4, the 1st metal mold | die which shape | molds the pitch of the weft in one warp yarn of a ladder cord and the 2nd metal mold | die which shape | molds the pitch of the weft yarn in the other warp yarn of the said ladder cord are made independent. Provided with a first molding roller as the first mold on one side of the feed roller for transferring the ladder cord, and a second molding roller as the second mold on the other side , heating said first and second shaping roller in a pressurized heat means, and molding the pitch at the one warp in the outer peripheral surface of the first molding roller, said second moldable rollers The pitch of the other warp is formed on the outer peripheral surface.

  According to a fifth aspect of the present invention, the feeding roller is provided with an engaging protrusion that engages with the weft and transfers the ladder cord, and is provided with concave portions on both sides of the engaging protrusion. The warp yarn is pushed toward the concave portion on the outer peripheral surface of the second molding roller and molded.

In Claim 6, the 1st metal mold | die which shape | molds the pitch of the weft in one warp yarn of a ladder cord and the 2nd metal mold | die which shape | molds the pitch of the weft yarn in the other warp yarn of the said ladder cord are made independent. The one warp is pressed in the heated state on the outer surface of the first mold to form the pitch of the one warp, and the other warp is used as the outer surface of the second mold. And pressing in the heated state to form the pitch in the other warp.
According to claim 7, the first weft pitch in one of the warp of the ladder cord formed shape by the mold, the second heating means independently of the first heating means having a first heating means to formed form the pitch of the weft in the other warp of the ladder cord by a second mold independently of the first mold provided with a.
In Claim 8, the first forming roller provided on one side of the feed roller for transferring the ladder cord is heated, and the weft in one warp of the ladder cord on the outer peripheral surface of the first forming roller. The second forming roller provided on the other side of the feed roller is heated to change the weft yarn pitch of the other warp of the ladder cord on the outer peripheral surface of the second forming roller. Mold.
According to a ninth aspect of the present invention, one warp of the ladder cord is pressed in a heated state by the first die, and the pitch of the weft in the one warp of the ladder cord is formed, independent of the first die. The other warp yarn of the ladder cord is pressed in a heated state by the second mold, and the pitch of the weft yarn in the other warp yarn of the ladder cord is formed.

  ADVANTAGE OF THE INVENTION According to this invention, the ladder cord manufacturing apparatus which can manufacture easily the multiple types of ladder cord from which the pitch difference of the weft in each warp yarn of a ladder cord differs can be provided.

It is a front view which shows the heat setting apparatus of 1st embodiment. It is a top view which shows the heat setting apparatus of 1st embodiment. It is a front view which shows the ladder code | cord | chord before shaping | molding. It is a front view which shows the ladder code | cord | chord after shaping | molding. It is a top view which shows the heat setting apparatus of 2nd embodiment. It is a front view which shows the main roller of 2nd embodiment. It is a perspective view which shows the heat setting apparatus of 2nd embodiment.

(First embodiment)
A first embodiment of the present invention will be described below with reference to FIGS. The ladder cord is a first step of braiding polyester fiber yarn in a ladder shape, a second step of dyeing the braided ladder cord into a desired color, and the dyed ladder cord is contracted by heat. In particular, it is formed through a third step of forming the weft pitch to a predetermined dimension.

1 and 2 show a heat setting device that deforms the weft yarn pitch of the ladder cord to a different pitch for each warp yarn in the third step.
This heat setting device guides the ladder cord 3 to the roller-shaped first die 1 and the second die 2 in an S shape, and sets the pitch between the weft yarns 5 in the warp yarns 4a, 4b of the ladder cord 3. Each is molded to a different pitch. The first and second molds 1 and 2 are rotationally driven synchronously at the same rotational speed by the operation of a control device (not shown).

  The first mold 1 includes a disk-shaped roller portion 6 having a thickness substantially equal to the interval between the warp threads 4a and 4b of the ladder cord 3, and is formed on the outer peripheral surface of the roller portion 6 at regular intervals in the circumferential direction. A dental mold 7 is formed. The pitch p1 of the molding die 7 is set to 21.3 mm when the weft pitch of the ladder cord 3 formed in the second step is 21.5 mm.

Then, each forming tooth mold 7 is engaged with the weft 5 of the ladder cord 3, and the ladder cord 3 is transferred in the arrow direction shown in FIG.
A heating plate 8 having a diameter larger than that of the roller unit 6 is attached to one side surface of the roller unit 6 and is heated by a heating unit whose temperature is controlled by the control device.

  In addition, as shown in FIG. 2, the roller portion 6 is formed of two types of materials having different thermal conductivities and is equally divided into two in the width direction, and the half portion a1 on the heating plate 8 side is opposite to the heating plate 8 It is made of a material having a higher thermal conductivity than the side half portion a2.

  The half portion a1 is heated to a temperature at which the warp yarn 4a of the ladder cord 3 can be contracted by heating by the heating plate 8, and the half portion a2 is not increased to a temperature at which the warp yarn 4b of the ladder cord 3 can be contracted. Yes.

  Similar to the first mold 1, the second mold 2 includes a disk-shaped roller portion 9 having a thickness substantially equal to the distance between the warp threads 4 a and 4 b of the ladder cord 3. Molding tooth molds 10 are formed at regular intervals in the circumferential direction on the outer peripheral surface. The pitch p2 of the forming tooth mold 10 is set to 21.1 mm when the weft pitch of the ladder cord 3 formed in the second step is 21.5 mm.

Each forming tooth mold 10 is engaged with the weft 5 of the ladder cord 3, and the ladder cord 3 is transferred in the direction of the arrow shown in FIG.
A heating plate 11 having a diameter larger than that of the roller portion 9 is attached to the other side surface of the roller portion 9, that is, the side surface opposite to the first mold 1, and the temperature is controlled by the controller. Is heated by.

  In addition, as shown in FIG. 2, the roller portion 9 is formed of two types of materials having different thermal conductivities and is equally divided into two in the width direction, and the half b1 on the heating plate 11 side is opposite to the heating plate 11. It is made of a material having higher thermal conductivity than the half portion b2 on the side.

  The half b1 rises to a temperature at which the warp 4b of the ladder cord 3 can be contracted by heating by the heating plate 11, and the half b2 does not rise to a temperature at which the warp 4a of the ladder cord 3 can contract. Yes.

  In the heat setting apparatus configured as described above, the ladder cord 3 formed in the second step is guided to the second mold 2 through the first mold 1. And in the 1st metal mold | die 1, the warp 4a is heated and the pitch of the weft in the warp 4a contracts from 21.5 mm to 21.3 mm. Since the warp 4b is hardly heated, the pitch of the weft in the warp 4b hardly changes from 21.5 mm.

  In the second mold 2, the warp 4 b is heated and the pitch of the weft in the warp 4 b contracts from 21.5 mm to 21.1 mm. Since the warp 4a is hardly heated, the pitch of the weft in the warp 4a hardly changes from 21.3 mm.

  Explaining the ladder cord formed in the third step as described above, the ladder cord 3 shown in FIG. 3 is a ladder cord generated in the second step, and the pitch px of the weft yarn 5 in the warp yarns 4a and 4b. Are both 21.5 mm.

  FIG. 4 shows a ladder cord 12 obtained by molding the ladder cord 3 in the third step using the first and second molds 1 and 2. As shown in the figure, the pitch py2 of the weft 14 in the warp 13a formed by the first mold 1 is formed to 21.3 mm. Further, the pitch py1 of the weft yarn 14 in the warp yarn 13b formed by the second mold 2 is formed to 21.1 mm.

  In the horizontal blind using the ladder cord 12 formed by such a heat setting device, the pitch of the weft 14 in the warp 13a is larger than the pitch of the weft 14 in the warp 13b. Therefore, the pitch difference is accumulated in the warp 13a. Therefore, the lower the slat, the greater the inclination.

Therefore, it is possible to alleviate glare at the window and secure privacy while securing the amount of light collected by the upper slats.
With the ladder cord manufacturing apparatus configured as described above, the following operational effects can be obtained.
(1) Ladder cords 12 having different weft 14 pitches can be easily formed by the warps 13a and 13b.
(2) The pitch difference of the weft yarn 14 between the warp yarns 13a and 13b can be accurately formed to a desired pitch difference by the forming tooth dies 7 and 10 of the first and second molds 1 and 2.
(3) If the first mold 1 or the second mold 2 is replaced with a mold having a different pitch of the forming tooth mold, a ladder cord having a different pitch difference between the warps 13a and 13b can be easily formed. Can do.
(Second embodiment)
5 to 7 show a second embodiment. The heat setting device of this embodiment includes one feeding roller 21 and two molding rollers 22 and 23 for molding a ladder cord warp.

  As shown in FIG. 6, the feed roller 21 has a disk shape substantially equal to the interval between the warp threads 4a and 4b of the ladder cord 3 formed in the second step, and the outer peripheral surface has an engagement protrusion having a mountain-shaped cross section. Many portions 24 are formed at equal intervals. When the pitch p3 of the weft of the ladder cord 3 formed in the second step is 21.4 mm, the pitch p4 of the engaging protrusion 24 is set to 20.5 mm, for example, smaller than the pitch p3.

  The feed roller 21 is rotationally driven by an operation of a control device (not shown). And the said engaging protrusion 24 is engaged with the weft 5 of the said ladder cord 3 sequentially, and the ladder cord 3 is transferred to the arrow A direction shown in FIG.

As shown in FIGS. 5 and 7, concave portions 25 a and 25 b are formed on both sides of the engaging protrusion 24 in a circular arc shape.
On both sides of the feed roller 21, molding rollers 22 and 23 facing the recesses 25a and 25b of the engaging projection 24 are disposed so as to be rotatable and reciprocating in the direction of arrow B. The molding rollers 22 and 23 are always urged toward the recesses 25a and 25b by urging means (not shown).

  The forming rollers 22 and 23 are formed with a diameter smaller than that of the feed roller 21, and the warp 4a of the ladder cord 3 guided on the outer peripheral surface of the feed roller 21 by an arc surface obtained by dividing the outer peripheral surface into six equal parts. , 4b are pushed into the recesses 25a, 25b.

The molding rollers 22 and 23 are rotated together with the feed roller 21, and when the feed roller 21 moves the ladder cord 3 by 6 pitches, the molding rollers 22 and 23 are rotated once.
In the forming roller 22, the pitch p5 of the arc surface for pushing the warp yarn 4a into the recess 25b is set to 21.3 mm. In the forming roller 23, the pitch p6 of the arc surface for pushing the warp yarn 4b into the recess 25a is 21.1 mm. Is set to

  The molding rollers 22 and 23 are heated to, for example, 200 ° C. by a heating means (not shown), and the warp yarns 4a and 4b pushed into the recesses 25a and 25b are thermally contracted.

  As shown in FIG. 4, the ladder cord 12 formed by the heat setting device as described above is formed so that the pitch py2 of the weft yarn 14 in the warp yarn 13a formed by the forming roller 22 is 21.3 mm. Further, the pitch py1 of the weft yarn 14 in the warp yarn 13b formed by the forming roller 23 is formed to 21.1 mm.

With the ladder cord manufacturing apparatus configured as described above, the following operational effects can be obtained.
(1) Ladder cords 12 having different weft yarn 14 pitches in the respective warp yarns 13a and 13b can be easily formed.
(2) The pitch difference of the weft yarn 14 between the warp yarns 13a and 13b can be accurately formed to a desired pitch difference by the forming rollers 22 and 23.
(3) If the forming rollers 22 and 23 are replaced with forming rollers having different pitches of the arcuate surfaces for pushing the warps 4a and 4b into the recesses 25a and 25b, ladder cords having different pitch differences between the warps 13a and 13b can be easily obtained. Can be molded.

You may implement the said embodiment in the following aspects.
In the second embodiment, the feed roller 21 and the forming rollers 22 and 23 are intermittently rotated to secure the time required for forming the warps 4a and 4b at a predetermined pitch with the forming rollers 22 and 23. You may do it.

  DESCRIPTION OF SYMBOLS 1 ... 1st metal mold | die, 2 ... 2nd metal mold | die, 3,12 ... Ladder cord, 4a, 4b, 13a, 13b ... Warp, 5, 14 ... Weft, 8, 11 ... Heating means (heating plate), 22 ... 1st metal mold | die (roller for shaping | molding), 23 ... 2nd metal mold | die (roller for shaping | molding).

Claims (9)

A first mold for forming the pitch of the weft in one warp of the ladder cord;
E Bei independently a second mold for forming a weft pitch in the other warp of the ladder cord,
The first mold includes first heating means for heating the one warp side,
The horizontal blind ladder cord manufacturing apparatus, wherein the second mold is provided with second heating means that heats the other warp side and is independent of the first heating means . The first mold is
A roller unit that engages with the weft of the ladder cord and transfers the ladder cord;
Is formed on the roller portion, and a molding tooth die for molding the pitch said at one warp
Further comprising
The second mold is
A roller unit that engages with the weft of the ladder cord and transfers the ladder cord;
It is formed on the roller portion, and a molding tooth die for molding the pitch in the other warp
The horizontal blind ladder code manufacturing apparatus according to claim 1 , further comprising:   3. The horizontal blind ladder cord manufacturing apparatus according to claim 2, wherein the roller portion is formed of a material having high thermal conductivity on a side heated by the heating means. A first mold for forming the pitch of the weft in one warp of the ladder cord;
A second mold for forming the pitch of the weft in the other warp of the ladder cord;
Independently
A heating roller is provided with a first molding roller as the first mold on one side of the feed roller for transferring the ladder cord, and a second molding roller as the second mold on the other side. The first and second molding rollers are heated with the outer circumferential surface of the first molding roller to form the pitch of the one warp, and the outer circumferential surface of the second molding roller horizontal blinds ladder cord manufacturing apparatus characterized by molding the pitch of the other warp.   The feeding roller is provided with an engaging protrusion that engages with the weft and transfers the ladder cord, and is provided with recesses on both sides of the engaging protrusion, respectively, and the first and second molding rollers 5. The horizontal blind ladder cord manufacturing apparatus according to claim 4, wherein the warp yarn is pressed toward the concave portion on the outer peripheral surface of the horizontal blind. A first mold for forming the pitch of the weft in one warp of the ladder cord;
A second mold for forming the pitch of the weft in the other warp of the ladder cord;
Independently
The one warp is pressed in the heated state on the outer surface of the first mold to form the pitch in the one warp, and the other warp is heated in the outer surface of the second mold. The horizontal blind ladder cord manufacturing apparatus is characterized in that the pitch of the other warp yarn is formed by pressing with a horizontal blind. The provided with a second heating means to forming shape the pitch of the weft at one warp of the ladder cord, which is independent of said first heating means by a first mold having a first heating means the ladder cord manufacturing method of a lateral blind, characterized by forming the shape of the pitch of the weft thread in the other warp of the ladder cord by a second mold that is independent of the one mold. The first forming roller provided on one side of the feed roller for transferring the ladder cord is heated to form the weft yarn pitch of one warp of the ladder cord on the outer peripheral surface of the first forming roller. The second forming roller provided on the other side of the feeding roller is heated to form the weft pitch of the other warp of the ladder cord on the outer peripheral surface of the second forming roller. A horizontal blind ladder code manufacturing method. A first mold is used to press one warp of the ladder cord in a heated state to form a pitch of the weft in the one warp of the ladder cord, and a second mold independent of the first mold. A method for producing a ladder cord for a horizontal blind, wherein the other warp of the ladder cord is pressed in a heated state by a mold to form a pitch of the weft in the other warp of the ladder cord.

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