JP3278727B2 - Heme three fold device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hem three-folding apparatus used to hem-fold an edge of a cloth made of a cloth material such as towels and sheets in manufacturing the same.

[0002]

2. Description of the Related Art A cloth is placed on a cloth receiving surface, a ruler is applied to a folding position at an end of the cloth, and a portion of the end protruding from the ruler is movable vertically and vertically. There is a hem three-folding device which is turned back by using
No. 8394). In this apparatus, a wide hem or a narrow hem can be formed by changing the position where the ruler is applied to the end of the cloth.

[0003]

However, in the above device,
For example, when the position to which the ruler is applied is far from the folding member as in the case of forming a narrow hem, the end 8af of the cloth 8f is folded back by the folding member 3f as shown in FIG. Even if it is pressed down, the folded member 3f is folded back as shown in the figure.
It can only hold the base of 8af. For this reason, as shown in FIG. 5A, in the case of the cloth 8f in which the hem is folded at the ear 35 as shown in FIG. 4, the folded portion 8a is formed near the ear 35 as shown in FIG.
A portion 36 of f that protrudes from the folding member 3f is in a state of greatly jumping up. Then, when the ruler 2f is lowered as shown in FIG. 5 (B) to reach the scheduled secondary folding position, the folded portion 8af is not pressed by the ruler 2f. Secondary folding member 4f
When folding back is performed, the end which should be in the three-fold state as shown by reference numeral 8d in FIG. 1E is denoted by reference numeral in FIG.
It collapsed as shown by 8df, and at the time of completion of the sewing process thereafter, it was a defective product in the state as shown in FIG.
Such a defective product has to be sewn by hand to correct the collapse and to be finished by hand sewing.

The present invention has been made in order to solve the above-mentioned problems (technical problems) of the prior art. For any hem width, the folded portion of the cloth is attached with a ruler at the tip of the folded portion. It can be held down by a folding member with only a small margin left for folding, and it is thickened by hem folding on the ears as well as ordinary flat cloth. The purpose of the present invention is to provide a hem three-folding device that can reliably apply a ruler to the leading end of the folded portion for secondary folding also in the case of cloth that has been folded. I have.

[0005]

A hem three-folding apparatus according to the present invention comprises a table having a cloth receiving surface on which a main portion of a cloth is placed, a cloth receiving surface on which an end of the cloth is placed, and a vertical A secondary folding member that allows free movement and reciprocation in the direction of the table, and a cloth receiving surface on which the free end of the cloth end is placed, and allows free reciprocation in the vertical direction and the table direction. The primary folding members are sequentially arranged side by side, and the primary folding position of the cloth edge on the secondary folding member, and the secondary scheduling of the cloth on the table closer to the main portion of the cloth than the primary folding position. And a ruler for exchanging addresses with the folding position.
The portion of the primary folded cloth protruding from the non-main part side of the cloth is lifted by the primary folding member, and folded back toward the main body side of the cloth based on the ruler, and slightly more than the free end of the folded part. A ruler is applied to the second scheduled folding position set at a position closer to the non-main body side of the cloth, and the portion of the secondary folded cloth protruding to the non-main body side of the cloth therefrom is lifted by the secondary folding member. In the hem three-folding apparatus which is folded back toward the main body side of the cloth with reference to the ruler to form a three-folded end therewith, the end of the cloth used for tri-folding at the end of the cloth In order to be able to cope with the case where the primary folding scheduled position is changed to a position closer to the main body side of the cloth because the dimensions are short and the dimensions allocated to the primary folding cloth and the secondary folding cloth are each shortened, For the primary folding member, the advance position of the primary folding member is set to the primary folding described above. Advancing position changing means is provided so as to be able to be changed in accordance with the change of the home position, and the portion of the primary folded cloth is lifted up by the primary folding member, and is moved to a position shifted toward the main body side of the cloth. When folding back to the main part side of the cloth based on the ruler to which it is addressed, increase the advance dimension of the primary folding member, and leave a large margin at the end of the folded part of the primary folded cloth. It is designed to be covered.

[0006]

The ruler is applied to the end of the cloth placed on the cloth receiving surface. The folding member folds an end portion of the cloth protruding from the ruler toward the main body side of the cloth with the ruler as a reference, and presses that portion. When the position to which the ruler is addressed is changed due to a change in the hem width, the forward position of the folding member is changed by the forward position changing means. With this change, the folding member can press the folded portion to a portion near the tip.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In FIG. 1, reference numerals 1 to 10 relate to a commonly known hem three-folding device, 1 is a table having a cloth receiving surface on which a main body 8 of cloth is placed, and 2 is a And a ruler for exchanging the cloth with the scheduled secondary folding position 32 on the table closer to the main part (leftward) of the cloth than the primary folding expected position. ,
Reference numeral 3 denotes a primary folding member having a cloth receiving surface on which the free end of the cloth end 8a can be placed, and which can freely move up and down and advance and retreat toward the table, and 4 has a cloth for placing the cloth end 8d. Secondary folding members 5, 6 having a cloth receiving surface and capable of freely moving up and down and moving forward and backward in the direction of the table are non-slip members in the folding members 3 and 4, for example, a spring-type hardness test 90H.
It has a two-layer structure of urethane having a hardness of s and a sponge polymerized on the lower surface side of the urethane. The thickness of both layers is 2 mm each. Reference numeral 7 denotes a cloth receiving surface.
It is constituted by the upper surfaces of the folding members 3 and 4. Reference numeral 8 denotes a hem-folded cloth, 9a and 9b denote pressing members for conveyance, and 10 denotes a needle of a sewing machine. In the above-described configuration, the ruler 2 is applied to the primary folding expected position 31 of the cloth edge as shown in the drawing, and the primary folding cloth 8a that is protruding from the cloth main body side (rear side) therefrom. The portion is lifted by the primary folding member 5 and folded back toward the main body portion 8 of the cloth with the ruler 2 as a reference, and a position slightly closer to the non-main body side of the cloth than the free end 8c in the folded back portion 8a. Secondary scheduled folding position 32 set to
, And the secondary folded cloth portions 8a and 8d protruding from the non-main part side of the cloth therefrom are lifted by the secondary folding member 4, and are moved to the main part side of the cloth with the ruler 2 as a reference. It is folded back to form a three-folded end.

Next, FIG. 3 showing a driving mechanism of the primary and secondary folding members 3 and 4 will be described. 11 is the frame of the hem three-fold device, 12 is the guide rod, 13, 14 is the slide member, 15,
Numeral 16 denotes a driving means for vertical movement, and an air cylinder is used as an example. Reference numerals 15a and 15b denote respective elevating parts (piston rods). Reference numeral 17 denotes a driving unit for moving the folding member 3 back and forth, and an air cylinder is used as an example. Reference numeral 18 denotes the reciprocating portion (piston rod). Although not shown, similar driving means is provided for the folding member 4. According to such a driving device, the folding member 3 moves back and forth (the left direction in FIGS. 1 and 3 is referred to as front and the right direction is referred to as rear in FIGS. The folding member 3 moves up and down by the up and down movement of the portion 15a. The same applies to the folding member 4.

Next, reference numeral 21 denotes a forward position changing means for the folding member 3. This changing means is designed to reduce the size of the end of the cloth to be subjected to tri-folding at the end of the cloth, and to reduce the dimensions allocated to the primary fold cloth 8a and the secondary fold cloth 8d. In order to cope with the case where 31 is set at a position closer to the main portion of the cloth, the advance position of the primary folding member 5 is made to correspond to the change of the planned primary folding position 31 in the primary folding member 5. The reference numeral 22 designates an interlocking rod of the means, which is integrally connected to the advance / retreat portion 18. 23 is a contact member screwed to the interlocking rod 22, 24 is a lock nut for fixing the contacting member 23 to the interlocking rod 22, and 25 is a stopper constituted by a part of the main body of the cylinder 17. 26 is an index attached to the member 23, and 27 is a scale attached to the frame 11, which facilitates the positioning operation of the member 23 with respect to the interlocking rod 22.

Next, a hem width of, for example, 2
The 0 mm hemm folding process will be described with reference to FIG. As shown in (A), the cloth 8 is placed at a predetermined position on the cloth receiving surface 7 of the table 1, and the ruler 2 is further positioned at the primary folding position at the end of the cloth 8.
Addressed to 31. Next, the primary folding member 3 is lifted, and the portion 8a of the primary folding cloth that is protruding from the ruler 2 on the side opposite to the main body of the cloth 8 at the end is lifted. Move forward to the main part 8b, and as shown in FIG.
8a is folded back to the main part 8b side of the cloth based on the ruler 2. In this case, the folding member 3 is the stopper 23 of FIG.
The folding member 3 is advanced to a position where the folding member 3 comes into contact with 25, and the folding member 3 covers the portion 8a in a state where the tip portion 8c is slightly left for the purpose of addressing the ruler 2 to the scheduled secondary folding position. The subsequent operation is well-known, and the above-mentioned portion 8a is pressed down by the folding member 3 as shown in FIG. 4C, and the ruler 2 is prepared at a position above the secondary folding position. Next, as shown in (D), the ruler 2 is addressed to the secondary scheduled folding position 32, and the folding member 3 is returned to the original position. Next, as shown in (E), the secondary folded member 4 is folded back from the ruler 2 by the secondary folding member 4 so that the portion 8d of the secondary folded cloth is folded back toward the main part 8b of the cloth with the ruler 2 as a reference. The end 8d, which was the part 8d, overlaps the main part 8b of the cloth,
It is in a three-fold state. Next, as shown in FIG. 3F, the cloth 8 is conveyed on the table 1 by the pressing member 9a, and after the conveyance is replaced by the pressing member 9b, the three-folded end 8d is sewn by the needle 10.

Next, since the size of the end of the cloth to be subjected to tri-folding at the end is short, and the dimensions allocated to the primary fold cloth 8a and the secondary fold cloth 8d are respectively short, the above-mentioned scheduled primary fold position
The hem folding step in the case where 31 is set at a position close to the main body side of the cloth, that is, when the hem width becomes, for example, 15 mm, will be described with reference to FIG. Prior to this step, the position of the contact member 23 in the longitudinal direction of the interlocking rod 22 in FIG. 3 is changed by rotating the latter relative to the former. It is preferable to use the scale 27 to set the change position. In this state, the same operation as described above is performed as shown in FIGS. 2A to 2E, and the end of the cloth 8 is folded in three. In this process (A)
As shown in the figure, the expected folding position 31 is farther from the folding member 3 than in the case of FIG. However, by changing the position of the contact member 23,
As shown in (B) and (C), since the folding member 3 advances further forward than in the case of FIG. 1, the folding member 3 has a ruler of its tip 8c with respect to the portion 8a as in the case of FIG. Cover with a little left over for the second folding. Therefore, large lifting of the tip portion 8c is prevented, and the ruler 2 can be reliably addressed to the scheduled secondary folding position 32 as shown in FIG.

Next, the advancing position changing means of the folding member 3 may change the advancing dimension of the advancing / retracting portion 18 by changing the amount of fluid sent to the cylinder which is the driving means 17. . Alternatively, when the driving means 17 is a motor, the rotation angle may be changed.

[0013]

As described above, in the present invention, the cloth 8
When the hem is folded at the end, there is a feature that the fold can be accurately folded based on the ruler 2 addressed to the end.

Further, in the above case, the hem width is reduced,
Ruler 2 for changing the hem width between the primary fold cloth 8a and the secondary fold cloth 8d
Even if the forward position of the primary folding member 3 is changed in accordance with the change even if the position 31 to which the In the state where a margin 8c for the ruler 2 for the secondary fold is slightly left at the tip 8c of the folded primary fold cloth 8a,
There is a feature that the primary folding member 3 can be pressed down to a state where it is sufficiently covered. This is true not only for a normal flat cloth, but also for a thick cloth 8f with a hem-folded ear 35 as shown in FIG. A breakthrough effect that ensures that the ruler 2 can be applied for secondary folding to the tip 8c, which covers the area close to 8c sufficiently, presses down, and floats. There is.

[Brief description of the drawings]

FIGS. 1A to 1F are explanatory views of a heme folding step.

FIGS. 2A to 2E are explanatory views of a hem folding step having a hem width different from that of FIG. 1;

FIG. 3 is a diagram illustrating a driving mechanism of a folding member.

FIG. 4 is a diagram showing a state in which an end of a cloth is pressed by a conventional hem three-fold device.

FIGS. 5A to 5C are views showing a part of a heme folding process using a conventional heme three-folding apparatus.

FIG. 6 is a plan view showing an example of a defective hem.

[Explanation of symbols]

 2 Ruler 3 Folding member 7 Cloth receiving surface 8 Cloth

Claims (1)

(57) [Claims] 1. A table having a cloth receiving surface on which a main part of a cloth is placed, and a table having a cloth receiving surface on which an end of the cloth is placed, and capable of freely moving up and down and moving forward and backward in the direction of the table. A secondary folding member and a primary folding member having a cloth receiving surface for placing the free end of the cloth end portion, and having a freely movable up and down movement and forward and backward movement in the direction of the table, are arranged side by side, A ruler for exchanging addresses between the scheduled primary fold position of the cloth edge on the secondary folding member and the secondary scheduled fold position of the cloth on the table closer to the main part of the cloth than the primary folded position. And a ruler is addressed to the primary folding expected position of the cloth end portion, and a portion of the primary folding cloth that is protruding to the non-main body side of the cloth therefrom is lifted by a primary folding member, and with reference to the ruler, Fold it back to the main part of the cloth, and A ruler is applied to a second scheduled folding position set at a position closer to the anti-main body side of the crab cloth, and a portion of the secondary fold cloth protruding toward the anti-main body side of the cloth from there is used as a secondary folding member. In the hem three-folding apparatus, which is lifted by the above-mentioned ruler and folded back to the main body side of the cloth with the ruler as a reference to form a three-folded end thereat. In order to cope with the case where the scheduled primary folding position is changed to a position closer to the main body side of the cloth because the dimensions of the part are short and the dimensions allocated to the primary folded cloth and the secondary folded cloth are each shortened. The primary fold member is provided with advance position changing means so that the advance position of the primary fold member can be changed in accordance with the change of the scheduled primary fold position, and the primary fold member is used for the primary fold cloth portion. Lift the cloth to the position shifted to the main part side of the cloth. When folding back to the main body side of the cloth based on the broken ruler, increase the advance dimension of the primary folding member and cover it largely leaving a small margin at the end of the folded part of the primary folding cloth. A three-fold hem device that can be put on.