JP2672066B2 - Tatami sewing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tattoo sewing machine for superposing helicopter cloth and heli paper on a presser base and sewing them together with a tatami mat on a tatami floor.

[0002]

2. Description of the Related Art As shown in FIGS. 12 to 15, a heli cloth 1 and a heli paper 2 are superposed on the tatami mat before and after the tatami mat. After that, heli cloth 1 and heli paper
The helicopter cloth 1 and the like are attached by folding back 2 and 2 on the end surface 4A of the tatami floor 4 and performing so-called reverse stitching. In this case, flat stitching 5
The seam is used as the folding reference for reverse stitching.
Since the 5A is disturbed, heli paper near the seam 5A
2, a fold line 6 is formed along the lengthwise direction.

Conventionally, as means for forming the fold line 6,
As shown in FIGS. 9 to 11, the projection 8A is provided on the presser foot 7 of the sewing machine.
A scoring roller 8 having a rotator is rotatably provided to hold the heli cloth 1 and heli paper 2 fed through the guide 7A or the like.
The fold marks 8 are formed on the heli paper 2 along the lengthwise direction of the helicopter paper 2 by the rotation of the scoring roller 8 while the sewing machine is running, and the flat needle stitch 5 is sewn with the sewing needle 9. Was there.

[0004]

In the above-mentioned conventional technique, since the scoring roller 8 is provided on the presser base 7, the scoring roller 8 shown in FIG.
As shown in 2, it is not possible to form the folds 6 in the folded-back portion 4C to the frame 4B, and therefore, the folded-back portion 4C for the reverse stitching is performed.
The folding work is extremely troublesome and requires a considerable amount of skill in order to accurately fold it, and it is a major obstacle in mechanizing the folding work.

Therefore, in the present invention, the fold formed in the longitudinal direction of the heli paper is a portion beyond the longitudinal direction of the tatami, that is,
An object of the present invention is to provide a tatami stitching machine that can be formed even over a folded-back portion so that manual folding work can be performed easily, accurately, and can be mechanized.

[0006]

According to the present invention, a helicopter cloth (20) and a helicopter paper (21) are separately provided through a guide means (28) via a presser base (1).
Introduced into 5), helicopter paper on helicopter fabric (20) in said retainer block (15) (21)
In the tatami sewing machine (10), which is sewn along the longitudinal direction of the tatami floor (23) with the sewing needle (14) that moves the needles on the tatami floor (23) together with the tatami mat (22), The following technical measures are taken to achieve the purpose.

That is, according to the first aspect of the present invention, the scoring means 17 for forming the folds 43 and 44 along the longitudinal direction of the helicopter paper 21 is provided in the sewing machine main body before the guide means 28. The scoring means 17 fixes the edge bracket 33 for positioning the edge of the helicopter paper 21 and the support bracket 34 to each other and fixes them to the sewing machine main body.
And the pair of roller shafts 3 are provided on the brackets 33 and 34.
7 and 38 are both supported in parallel with each other, and the one roller shaft 37 has a circumferential groove 3 having a U-shaped cross section on the outer circumference.
9A is provided with a receiving roller 39, and the other roller shaft 3
8 is a protrusion 41 having a triangular cross section which enters the circumferential groove 39A.
Both rollers 39, 41 are provided with a pressing roller 41 having A.
The helicopter paper 21 introduced in between is placed between both edges of the circumferential groove 39A.
By pressing the protrusion 41A while being bridged to
The folds 43 and 44 are formed along the longitudinal direction of the heli paper 21 , and further, the bracket 33 is provided with guide means 45 for introducing the heli paper 21 between the rollers 39 and 41. The guide means 45 is substantially U-shaped
One end of the rod member 46 is fixed to the bracket 33, and
The edge is free and is used as the insertion part of the heli paper 21.
Is what it is.

In the present invention according to claim 2, the gas is
The idling means (45) cooperates with the edge bracket (33) to
It has a width regulator (48) for positioning the paper (21) in the width direction.
It is characterized by that. Further, in the present invention according to claim 3, the receiving roller (39) and the pressing roller (41) are
The roller shaft (37) (38) can be freely changed in its axial position.
Positioning is possible with radial screws (40) (42).
It is characterized by the following.

[0009]

When the tatami sewing machine 10 shown in FIGS. 7 and 8 moves along the longitudinal direction of the tatami mat 18 fixed to the tatami mat 13, the helicopter cloth 20 and helicopter paper 21 shown in FIG. 1 are guided. It is introduced to the presser base 15 through the means 28, and is sewn flatly on the tatami mat 23 and the tatami floor 23 by the sewing needle 14 which is superposed on the presser base 15 and operates to move the needle.
24.

Before the guide paper 28 is reached, the heli paper 21 has folds 43 and 44 formed along the longitudinal direction by the scoring device 17 provided in the sewing machine main body, and the folds 43 and 44 are formed.
Since it is formed even over the folded-back portion 21A as shown in FIG. 6, the folds 43 and 44 can be used as the folded-back reference for the reverse stitching. When the folds 43 and 44 are formed, the circumferential groove 39A of the receiving roller 39 has a U-shaped cross section, and the protrusion 41A of the pressing roller 41 which enters the fold line 39 has a triangular cross section.
The folds 43 and 44 are sharply formed in a state in which 1 is bridged. That is, bridging between the edges of the circumferential groove 39A
When pressing the helicopter paper 21 that is being pressed by the protrusion 41A,
Is the edge acting as a resistance to support the heli paper 21?
The creases 43 and 44 formed by the projection 41A are sheared.
It becomes a pu.

When the heli paper 21 is introduced between the receiving roller 39 and the pressing roller 41 , the bar material 46 having a substantially U-shape is used.
The other end of the guide means 45 is free, and the insertion portion is
It is easy to insert the heli paper 21 because it has
The heli paper 21 can be positioned in the width direction by the guide means 45 in cooperation with the edge bracket 33 to form the folds 43 and 44 at correct positions.

[0012]

Embodiments of the present invention will now be described with reference to the drawings. In FIG. 7 showing the overall structure in elevation and FIG. 8 showing in plan, 10 is a tatami stitching machine, It consists of a sewing machine base 11 and a sewing machine main body 12, and can reciprocate along the longitudinal direction of the tatami mat base 13 in the Y-axis direction.

In the illustrated example, the sewing machine main body 12 is movable in the X-axis direction by numerical control in a direction orthogonal to the longitudinal direction of the tatami mat base 13 with respect to the sewing machine base 11, so that the so-called bottom of the tatami mat is habitually moved. Although it can be taken, it is of course applicable to other sewing machines. The sewing machine main body 12 is provided with a sewing needle 14 for moving a needle, a presser base (see FIG. 1) 15, a cutting blade 16 and the like, and a scoring means 17.

The tatami mat base 13 is provided with a tatami mat tightening bar 19 for tightening and releasing the tatami mat 18 placed thereon. When the tatami machine 10 moves in the Y-axis direction, the helicopter cloth 20 and heli paper 21 wound on the reel (not shown) are held by the presser base shown in FIG.
As shown in FIG. 6, flat needle stitching 24 is performed on the tatami mat 23 and the tatami mat 23 with the tatami mat 22 when the predetermined sewing is completed. twenty one
Can be cut with a cutter (not shown), leaving the folded-back portion 21A to the frame or the like.

In FIGS. 1, 2 and 4, the presser base 15 is slidable and separable on the heli cloth 20 and the heli paper 21 which are superposed on the tatami mat 22, and therefore can be lifted and lowered. It is attached to the sewing machine main body 12. Further, a bracket 27 is detachably attached to the presser base 15 by a bolt 26 on the introduction portion side thereof, and the helicopter cloth 20 is attached to the bracket 27.
Guide means 28 for guiding the introduction of the helicopter paper 21 and the helicopter paper 21 are provided.

It should be noted that the guide means 28 are parallel to each other, and on the guide rod 29 protruding from the bracket 27, the width regulating body 30 is provided.
Is provided so as to be slidably fixed by a screw 31, a helicopter cloth 20 is superposed on a tatami mat 22, and a heli paper 21 having a width shorter than the helicopter cloth 20 is superposed on the helicopter cloth 20. The sewing machine main body 12 in the course of feeding the helicopter paper 21 and before reaching the guide means 28 is provided with scoring means 17, and the helicopter paper 21 passing through the scoring means 17 is guided through the guide 32. means
It is supposed to be introduced in 28.

The scoring means 17 is, as shown in FIGS.
The edge reference bracket 33 and the support bracket 34 are opposed to each other and fixed to the main body of the sewing machine.
A pair of roller shafts 37, 38 that rotate about their axes by bearings 35, 36 are supported in parallel with each other, and one roller shaft 37 has a circumferential groove with a U-shaped cross section on the outer circumference.
Two receiving rollers 39 having 39A are provided so as to be slidable in the axial direction and fixable by screws 40, and the other roller shaft 38
Has a triangular cross section that enters the circumferential groove 39A of the receiving roller 39.
Two pressing rollers 41 each having a protrusion 41A are slidable in the axial direction and can be fixed by a screw 42.

When the heli cloth 20 and the heli paper 21 are fed from a reel (not shown) following the forward movement of the tatami sewing machine 10, the edge of the heli paper 21 is positioned by the bracket 33. When passing between the receiving roller 39 and the pressing roller 41, the protrusion 41A of the pressing roller 41 enters the circumferential groove 39A of the receiving roller 39 and the circumferential groove 39A.
Two folds 43 and 44 are formed in the longitudinal direction of the heli paper 21 which is bridged between both outer peripheral edges.

The pair of (two) folds 43, 44 are parallel to each other, and one fold 43 is near the flat stab seam 24 and parallel to the seam 24 as shown in FIG. The other folds 44 are separated from each other and are formed at a position corresponding to the tatami floor edge 23A when these are folded back to the tatami mat end face with the folds 43 as a reference. This fold 43,4
Although a bending force acts on the roller shafts 37, 38 via the helicopter paper 21 etc. in forming 4, the roller shafts 37, 38 are sufficiently supported at both ends by bearings 35, 36. In addition to being able to withstand folds, the receiving roller 39 and the pressing roller 41 can slide axially on the roller shafts 37, 38 and can be positioned with screws 40, 42.
The formation positions of 43 and 44 can be adjusted.

Further, on the introduction side of the receiving roller 39 and the pressing roller 41, a guide means 45 for introducing and guiding the heli paper 21 is provided between both rollers. This guide means 45 is shown in FIG.
As shown in FIG. 2B and FIG. 2, it is a substantially U-shaped bar member 46,
One end of the rod is screwed 47 to the bracket 33, and the other end of the rod is free so that the heli paper 21 can be inserted from this free portion. The width is regulated between a receiving roller 39 and a pressing roller 41 by a width regulating body 48 which is slidably fixed in the longitudinal direction.

FIG. 5 shows a comparative example of the present invention in which a pair of receiving rollers 39 are formed on the tapered outer peripheral surface 39B, and the folds 43, 44 are formed by the outer peripheral surface 39B and the projection 41A of the pressing roller 41. Since other configurations are common to those of the embodiment shown with reference to FIG. 1B, common parts are denoted by common reference numerals. However, FIG.
As shown in (B), forming the folds 43, 44 by the receiving roller 39 having the circumferential groove 39A is advantageous in that sharp folds 43, 44 can be formed.

Although the embodiments of the present invention are as described above, the following modifications are free. In claim 1, the scoring means 17, of the folds 43 and 44, rather it may also be one that forms a fold 43 or 44 of only one, further,
The projection 41A may be discontinuous rather than continuous in the circumferential direction, and the folds 43 and 44 at this time are intermittently formed.

[0023]

The present invention is as described above. In the present invention according to claim 1 , the machine is marked on the sewing machine main body in the middle of the course of feeding the helicopter paper to the holding table and before the guide means. Since the means is provided, the folds formed on the heli paper can be formed over the longitudinal length of the tatami mat before or after the tatami mat. The work of folding the helicopter cloth can be performed easily and accurately, and can be mechanized.

Further, since the tatami mat is not pressed when forming the folds on the heli paper, damage to the tatami mat can be prevented. Also, the edge block that positions the edge of the heli paper
Prepare the sewing machine body with the racket and the support bracket facing each other.
The roller shafts of the pressing roller and receiving roller on both brackets.
Since both sides are supported, the bending force of the presser roller
It can withstand even the action of.

Furthermore, the circumferential groove of the receiving roller are protrusions of the presser roller enters into this in cross-section U-shaped with a triangular cross-section, f
Ri paper is bridged between both edges of the circumferential groove and presses the protrusion
When you make a crease by doing so, do you give resistance at both edges?
The contact pressure of the protrusions is high, so sharp folds
I can see it. Also guide the introduction of heli paper between both rollers.
The guide means is composed of a substantially U-shaped bar, and the other end of the bar is free.
-It is said that the insertion part is formed, so insert the heli paper
Is easy and the heli paper introduced between both rollers is
The folding means has a width regulating body that is positioned in the width direction,
The eye formation position is accurate and rarely shifts in the width direction.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, (A) is a front view,
FIG. 1B is a view indicated by an arrow B in FIG.

FIG. 2 is an enlarged view showing an arrow C in FIG.

FIG. 3 is a plan view of an essential part of FIG.

FIG. 4 is a side view of a main part of FIG. 3;

FIG. 5 is a plan view of a comparative example corresponding to FIG.

FIG. 6 is a perspective view of a main part showing a fold forming state.

FIG. 7 is an overall elevational view of an embodiment of the present invention.

FIG. 8 is an overall plan view of an embodiment of the present invention.

FIG. 9 is a front view of a main part of a conventional example.

FIG. 10 is a side view of a main part of a conventional example.

FIG. 11 is a plan view of a main part of a conventional example.

FIG. 12 is a perspective view of a main part showing a fold forming state of a conventional example.

FIG. 13 is a front view of a flat sewn-on state.

FIG. 14 is a front view of the first-stage folded back after the flat stitch sewing state.

FIG. 15 is a front view of the second-stage folded back after the flat stitch sewing state.

[Explanation of symbols]

 10 Tatami sewing machine 14 Sewing needle 15 Presser stand 17 Marking means 20 Heli cloth 21 Heli paper 23 Tatami floor 24 Seam 39A Circumferential groove 39 Receiving roller 41A Protrusion 41 Presser roller 43 Fold 44 Fold

Claims (3)

(57) [Claims] 1. A helicopter cloth (20) and a helicopter paper (21) are individually introduced into a presser base (15) through a guide means (28), and the presser foot (15) is placed on the helicopter cloth (20). Heli paper (2
1) is piled up and the tatami mat (23) together with the tatami mat (22)
In a tatami stitching machine (10) that sewes along a longitudinal direction of a tatami floor (23) with a sewing needle (14) that moves, the sewing machine main body before reaching the guide means (28) is provided with the helicopter. Folds (43) along the length of the paper (21)
A scoring means (17) for forming (44) is provided, and the scoring means (17) includes an edge bracket (33) for positioning an edge of the heli paper (21) and a support bracket (34). The pair of roller shafts (37) and (38), which are opposed to each other and fixed to the sewing machine main body, are supported by the brackets (33) and (34) in parallel with each other. One roller shaft (37) is provided with a receiving roller (39) having a U-shaped peripheral groove (39A) on the outer periphery, and the other roller shaft (38) has a triangular cross section that enters the peripheral groove (39A). Between the both edges of the circumferential groove (39A), the heli paper (21) having a pressing roller (41) having a protrusion (41A) is introduced between the rollers (39) (41).
The protrusion (41A) should be pressed while being bridged to
And folds (43) along the length of the heli paper (21 )
(44) are intended to form, further, the bracket (33), said having both rollers (39) (41) guide means (45) for introducing a helicopter paper (21) therebetween, said The guide means (45) is a substantially U-shaped bar (46).
One end of the rod is fixed to the bracket (33) and the other end of the rod is
A tatami sewing machine, which is formed as a lee and is used as an insertion portion of the helicopter paper (21) . 2. The guide means (45) is provided with a width regulating body (48) for positioning the heli paper (21) in the width direction in cooperation with the edge bracket (33). The tatami sewing machine according to claim 1. 3. A receiving roller (39) and a pressing roller (4)
The tatami mat according to claim 1, wherein the roller shaft (37) (38) and the roller shaft (1) are positionally changeable in the axial direction and can be positioned by screws (40) (42) in the roller radial direction. Sewing machine.