JPH0761702A - Tri-folding device - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] Even if the width of the three-fold part to be formed is wide,
Provided is a tri-folding device capable of forming a beautifully finished tri-folded part in which the folded back part is completely hidden behind the front side fabric. [Structure] A primary folding means 2 which folds an end portion 18 of a cloth 15 placed on a table to fold it in two, and a two-folded portion formed by the primary folding means is further folded in the same direction to make a three-fold secondary And a folding means 3 and further below the place where the tip of the end portion 18 folded back by the primary folding means 2 exists.
A first earing means 8 for pulling out the cloth located under the tip of the cloth toward the outside intersecting with the folding direction,
Below the place where the tip of the two-folded portion folded back by the secondary folding means 3 is located, a second part for pulling out the cloth located under the tip toward the outside intersecting the folding direction.
The earing means 9 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tri-folding device used to fold the ends of cloth made of these materials into three folds when manufacturing cloth products such as towels and sheets. .

[0002]

2. Description of the Related Art A table on which a cloth is placed, a primary folding means for folding back the end of the cloth placed on the table to be folded in half, and a double folding section formed by the primary folding means. And a secondary folding means for folding back in the same direction to make three folds, and further below the tip of the location where the tip of the two-folded portion folded back by the secondary folding means is located. There is known a device provided with an earing means for pulling out the located cloth toward the outside which intersects with the folding direction (see, for example, Japanese Utility Model Publication No. 63-14788).

In such an apparatus, when the width of the three-folded portion to be formed is relatively narrow, the cloth at the above-mentioned place (the cloth on the front side in the completed state of the cloth product) is formed by the earing means. And pull out the cloth on the front side)
The drawer extends over the entire area of the front side fabric overlapping the portion folded back by the secondary folding means, and all the portions folded back by the secondary folding means are hidden behind the front side fabric to make a beautiful finished state. Can be done.

[0004]

However, as shown in FIG. 11, when the width W of the three-folded portion 25f formed is wide, the drawer of the cloth 24f on the front side at the above-mentioned location is the three-folded portion 25f.
Does not extend to the tip 26f of the. In this case, the three-fold part 25
When the end 28f of the cloth folded inside the outer cloth at the tip portion 26f of f is projected outward from the cloth 24f on the front side as shown in FIG. 11, the cloth 24f on the front side is moved by the earring member 31. Even if it is pulled out, the edge of the cloth that is protruding is 28f.
Had a problem that it remained unsightly without hiding as shown in the figure.

The present invention has been made in order to solve the above-mentioned problems (technical problems) of the prior art. Even if the width of the three-fold portion to be formed is wide, the folded portion is a cloth on the front side. It is an object of the present invention to provide a tri-folding device capable of forming a beautifully-finished tri-folded part that is completely hidden on the back side.

[0006]

In order to achieve the above-mentioned object, a tri-folding device according to the invention of the present application folds a table on which a cloth is placed and an end of the cloth placed on the table, and folds the cloth in two. In the three-folding device, the primary folding means includes a primary folding means and a secondary folding means for folding the two-folded portion formed by the primary folding means further in the same direction to form three-folds. Below the place where the tip of the folded back end exists, there is provided a first earing means for pulling out the cloth located under the tip toward the outside which intersects with the folding direction, and further, Below the place where the tip of the two-folded portion folded back by the secondary folding means is located, a second ear for pulling out the cloth located under the tip toward the outside intersecting with the folding direction. It is provided with a discharging means.

[0007]

Operation: The edge of the cloth is folded back into two by the primary folding means. After that, the cloth under the tip of the folded-back end is pulled outward by the first earing means so as to intersect the folding direction. Next, by the secondary folding means, the above-mentioned two-folded portion is folded back in the same direction to be three-folded. After that, the cloth under the tip of the folded back folded portion is pulled out outward by the second earing means so as to intersect the folding direction. Then, all of the folded-back portions are hidden behind the pulled-out cloth, and a beautifully finished three-fold portion is formed.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, 1 to 4 are members well known in this type of tri-folding device (see, for example, Japanese Patent Laid-Open No. 1-203172), 1 is a table for placing a cloth, and 2 is a table on the table 1. This is a primary folding means for folding back the end of the cloth to be folded in two, which is called, for example, a primary folding piece, and is driven by a primary folding means drive device (not shown) in the arrow Z direction (vertical direction) and the arrow. It operates in the Y direction (horizontal direction) and folds the cloth in the Y'direction. Reference numeral 3 denotes a secondary folding means for folding the two-folded portion formed by the primary folding means 2 further in the same direction to make a three-fold, which is called, for example, a secondary folding piece, and is not shown. The secondary folding means driving device operates in the Z direction and the Y direction to fold the cloth in the Y'direction. Reference numerals 2a and 3a are anti-slip members provided for each means. Reference numeral 4 is a ruler for accurately determining the position of each fold of the primary fold and the secondary fold, which is movable in the Y and Z directions by a ruler driving device (not shown).

Next, 8 is a first earing means, which is below the place where the tip of the end folded back by the primary folding means 2 exists, and the cloth located under the tip intersects with the folding direction. It is provided so that it can be pulled out toward the outside. For example, the cloth on which the three-fold portion is to be formed is placed so as to come to a predetermined position with respect to the table 1, and the position of the fold of the primary folding is also determined, so that the location of the tip of the end portion is also determined. Therefore, a through hole 10 for exposing the earing means is provided in the table 1 at the fixed place, and the table 1 can be moved through the through hole 10 in the Z direction and the X direction (horizontal direction and the direction orthogonal to the Y direction). And the cloth is pulled out in the X'direction. Reference numeral 9 is a second earing means, which is below the place where the tip of the two-folded portion folded back by the secondary folding means 3 is located, and which is located outside the tip of the cloth, and which crosses the folding direction outward. It is provided so that it can be pulled out toward. For example, as in the case of the first ear protruding means, a through hole 11 is provided, and the through hole 11 is provided so as to be movable in the Z direction and the X direction so that the cloth is pulled out in the X'direction. Each of the earing means 8 and 9 has an anti-slip means 8a and 9a on the upper part thereof (for example, unevenness for preventing slippage by engaging with cloth. In addition, the frictional force with the cloth is increased to prevent slippage. It may be rubber, for example). Reference numeral 12 denotes a movable part in the drive device for driving the first earing means 8 and the second earing means 9 in the X and Z directions. It is attached directly, and the first earing means 8 is attached via a connecting member 13. Although not shown, the tabs 8 and 9 are also provided at a position corresponding to the other edge of the cloth.

Next, the formation of a three-fold portion (for example, a wide three-fold portion 25 having a width W of about 25 mm shown in FIG. 7) by the three-fold device having the above-described structure will be described with reference to FIGS. 1 to 7. 15
Is a cloth made of a material such as a towel, and 16 is a winding selvage formed in advance on the edge thereof (others may be woven selvedges). First, the primary folding process is performed. The cloth 15 is oriented in a predetermined direction with respect to the base 1, for example, the width direction of the cloth 15 coincides with the X direction and the longitudinal direction coincides with the Y direction, and at a predetermined position, for example, as shown in FIG. It is placed so that the dimension L1 from the end surface 1a of the base 1 to the tip 15a of the cloth 15 is 59 mm. Next, the ruler 4 is applied to the cloth 15 at a predetermined primary folding position, for example, a position 25 mm from the end face 1a, and the primary folding means 2 is actuated to fold back the end portion 18 of the cloth 15 as shown in FIG. Is folded in two to form a folded portion 21. The first earring means 8 is then actuated as indicated by the arrow in FIG. 2 and the cloth 22 under the tip 18a of the folded end 18 is
To the outward direction (as will be described later, the effect of pulling out the cloth by the ear-out means extends not only to the cloth in the portion in contact with the ear-out means, but also to the area in the vicinity thereof. Inside, called just under the tip, including not only just under the tip but also in the vicinity where the effect of pulling out the cloth spreads). By pulling out this cloth 22, the edge portion 18 of the tip 18a is
b is hidden on the back side of the cloth 22 (when the towel is a finished product, the lower side in FIG. 1C is the front side and the upper side is the back side). In this work, since the cloth 22 is received by the ruler 4 as the first earing means 8 moves up, the engagement of the first earing means 8 with the cloth 22 is ensured, and the X of the first earing means 8 continues. The cloth 22 is reliably pulled out by the movement in the'direction. In the above case,
The second earing means 9 moves in the same manner, but the cloth 23 on it is the second
Since it is only riding on the earing means 9, in many cases, slippage occurs there and the amount of pulling out the cloth 23 on the second earing means 9 is small. When the drawing is completed, as shown in FIG. 3, as the final step of the primary folding, the primary folding means 2 is pulled down to press the two-folded portion 21, and the first and second ear protruding means 8 and 9 are lowered respectively. Separate from the cloths 22 and 23.

Next, a secondary folding process is performed. As shown in FIG. 4, the ruler 4 is directed to a predetermined secondary folding position, for example, a position corresponding to the end face 1a, and the tip end portion 19 of the end portion 18 is pressed by the ruler 4. Next, as shown in FIG. 5, after the primary folding means 2 is retracted, the secondary folding means 3 is actuated, and the two-folded portion 21 is further folded back in the same direction as in the case of the primary folding with reference to the ruler 4. A tri-fold portion 25 is formed. Next, as shown in FIG. 6, the second earing means 9 is operated in the direction of the arrow X ′,
The second earing means 9 is the tip of the folded back portion 21.
Pull out the cloth 23 under 21a toward the outside. By this drawing, the edge portion 21b of the tip end 21a is hidden behind the cloth 23 below it. The pulling out of the cloth by the first earing means 8 and the pulling out of the cloth by the second earing means 9 are performed on the cloth 2 above the place where each earing means is present.
Not only 2 and 23 but also the vicinity thereof (the upper and lower portions of each earing means in (A) of each of FIGS. 1 to 7) (differs depending on the density of texture of cloth and the difference in thickness) However, for example, the action of the drawer extends to a portion in the vicinity of about 10 mm from the ear protruding means). Therefore, the two-folded portion 21 folded back by the both drawers, including the portions indicated by reference numerals 28 and 21b, is the whole thereof. Is hidden on the back side of the cloth in the range from the portion indicated by reference numeral 22 to the portion indicated by reference numeral 23. In the case of the operation of the second ear protruding means 9, in this example, the first ear protruding means 8 also moves,
The ear-out means 8 pulls the cloth 22 (cloth near the tip 26 of the three-fold portion 25) outward again. Next in FIG.
As shown in FIG. 5, as the final step of the secondary folding, the secondary folding means 3 is lowered to press the three-folded portion 25, and the first and second earing means 8 and 9 are lowered. After that, as is well known, the secondary folding means 3 is retracted while the three-folded portion 25 is clamped so as not to collapse, and the cloth 15 having the three-folded portion 25 formed thereon is carried to a sewing device (not shown). Sewing is performed so that the three-folded part is not unraveled and unraveled.

Next, when the three-fold portion to be formed has a narrow width (for example, about 14 mm), the work may be performed as follows. First, as in the case described above, the cloth 15 is placed at a predetermined position with respect to the first. In this case, the dimension L1 is set to 26 mm, for example. After the primary folding is performed in the same manner as in the above case, the cloth 22 is pulled out by the first earing means 8 as shown in FIG. Next, secondary folding is performed in the same manner as in the above case, and the three-folded portion 25 is formed as shown in FIG. In this case, since the width of the three-folded portion 25 is small, as is apparent from the figure, the folded two-folded portion 21 is hidden behind the cloth within the range covered by the first earring means 8. Therefore, in this case, the work of pulling out the cloth by the second ear protruding means 9 becomes unnecessary, and the three-folded portion 25 after the secondary folding is performed.
The secondary folding means is retracted in a state in which is clamped, and the cloth 15 on which the three-folded portion 25 is formed is sent to the sewing process.

Next, each of the first earing means 8 and the second earing means 9 may be individually provided with a driving device so as to be individually driven. In that case, in the case of forming the three-folded portion, the first earing means 8 in the step shown in FIG.
It is better to operate only the second earing means 9 in the step shown in FIG.

Next, FIG. 10 shows a different embodiment of the present invention, in which one earing member 31 is replaced by a repositioning means 32, for example, an air cylinder, to locate the first and second earing means 8 and 9, respectively. It is configured such that the positions can be changed to the places 31a and 31b corresponding to the positions 31a and 31b.
It shows an example in which it is made to function as the second ear protruding means in the state of being located at. In addition, parts that are considered to be the same or equivalent in configuration to those in the previous figure in terms of function are denoted by the same reference numerals as those in the previous figure with the letter e added to omit redundant description.

[0015]

As described above, according to the present invention, in the case of forming the three-folded portion 25, the end portion 18 of the cloth 15 is folded back into two and then the tip end 18a of the folded back end portion 18a. The cloth 22 underneath is pulled out by the first earing means 8 to the outside intersecting the folding direction, and further, the above-mentioned two-folded portion
After folding back 21 in the same direction to make three folds, the cloth 23 under the tip 21a of the folded back folded portion 21 is pulled out by the second earing means 9 to the outside crossing the folding direction. The three-fold portion to be formed as shown in FIG.
Even if the width of 25 is wide, there is an advantage that all the folded-back portions 21 can be hidden behind the pulled-out cloths 22 and 23, and a beautifully finished three-folded portion 25 can be formed. .

Further, in the three-folding device of the present invention, the three-folded portion 25 to be formed has a narrow width and is located below the folded tip 18a after folding the end portion 18 of the cloth in two. Cloth 22
When the drawer is pulled out by the first earing means 8, when the drawer extends to the place where the tip 21a of the folded back portion 21 reaches when the folded portion 21 is further folded back, There is also an advantage that the folded-back two-folded portion 21 can be completely hidden behind the pulled-out cloth to form a beautifully finished three-folded portion only by the pull-out by the ear-out means 8.

[Brief description of drawings]

FIG. 1A is a plan view showing a main part of a tri-folding device in a state in which primary folding is performed, FIG. 1B is a sectional view taken along line BB in FIG. 1A, and FIG. -C line sectional view.

2A to 2C are views corresponding to FIGS. 1A to 1C in a state in which a first ear protruding means is operated.

3A to 3C are views corresponding to FIGS. 1A to 1C in a state in which the first ear protruding means is retracted after the operation.

FIGS. 4A to 4C are diagrams corresponding to FIGS. 1A to 1C showing a state in which a ruler is applied to a secondary folding position.

FIG. 5A is a plan view showing a main part of the tri-folding device in a state in which secondary folding is performed, and FIG.
A line sectional view, (C) is a CC line sectional view in (B).

FIGS. 6A to 6C are views corresponding to FIGS. 5A to 5C in a state in which the second ear protruding means are operated.

7A to 7C are views corresponding to FIGS. 5A to 5C in a state in which the second ear protruding means are retracted.

8A and 8B are views corresponding to FIGS. 2A and 2C in the case of forming a narrow three-fold portion, respectively.

FIG. 9 is a view corresponding to FIG. 5A in the case of forming a narrow three-fold portion.

FIG. 10 is a partial view showing a different embodiment of the first and second ear protruding means.

FIG. 11 is a partial view showing an operating state of the ear protruding means when a wide three-fold portion is formed in the conventional three-fold device.

[Explanation of symbols]

 1 unit 2 Primary folding means 3 Secondary folding means 8 First earing means 9 Second earing means 15 Cloth 18 Edge part

Claims (1)

[Claims] 1. A table on which a cloth is placed, a primary folding means for folding an end of the cloth placed on the table into two folds, and a two-folded portion formed by the primary folding means. In a tri-folding device further comprising a secondary folding means for folding back in the same direction to make three folds, below the tip of the end of the end folded back by the primary folding means, below the tip. A first earing means for pulling out the located cloth toward the outside intersecting with the folding direction is provided, and further below the place where the tip of the two-folded portion folded back by the secondary folding means is located. Is a tri-folding device, which is provided with a second earing means for pulling out the cloth located under the tip of the cloth toward the outside intersecting with the folding direction.