JP3369476B2 - Tatami sewing machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a tatami sewing machine in which an operation of sewing an edge to a tatami is automated.
The present invention relates to a tatami sewing machine capable of performing plain stab sewing and reverse stitching with a tatami mat sewing machine and automatically performing a hammering sewing by numerical control on a lower front side of a tatami mat floor. 2. Description of the Related Art A tatami sewing machine (tatami sewing apparatus) which can automatically sew flat stitches and reverse stitches is disclosed in Patent No. 27.
A tatami sewing apparatus disclosed in Japanese Patent No. 42881 is known. That is, in a tatami stitching device that sew the edge and the lower margin paper to the tatami by performing flat stab and reverse stitch, a flat stab machine that performs flat stab while traveling on a traveling path parallel to the placed tatami,
A reverse stitcher that performs reverse stitching while traveling on a traveling path parallel to the placed tatami; and a tatami sewing table on which the tatami is placed, wherein the tatami sewing table is located at a position facing the traveling path. A tatami sewing apparatus comprising: a tatami fixing means for fixing the tatami mat; and a rotating means for rotating the tatami to move the side of the tatami to be sewn to the side of the traveling path. [0003] In the technology disclosed in the above-mentioned publication, although usefulness is recognized as such,
There were the following issues. Since the flat stab machine and the reverse stitcher are arranged before and after in the longitudinal direction of the tatami to be able to travel on the same traveling path, respectively, and therefore a traveling motor is required, which increases costs. [0004] Since the flat stab machine and the reverse stitcher are provided side by side, the overall length of the machine becomes long and the installation space is restricted. The above increases the number of mechanical parts and complicates maintenance. There is a risk of the operator being inadvertently pinched between the flat piercing machine and the reverse stitcher. The present invention relates to a tatami sewing machine, that is, a flat sew sewing machine and a reverse sew sewing machine are combined with a flat sew sewing machine and a reverse sew sewing machine. It is an object of the present invention to provide a tatami sewing machine capable of automating habit removal sewing by control. [0006] The present invention is configured as follows in order to achieve the above object. That is, the tatami sewing machine according to the present invention, a tatami table on which a tatami floor is placed,
Turning means for changing the direction of the tatami floor on the tatami stand;
Tatami floor pushing means for moving the converted tatami floor in the width direction,
Tatami floor fastening means for fixing the tatami floor to the tatami floor;
One set provided for free reciprocation along the longitudinal direction
In the width direction of the tatami mat provided on the sewing machine pedestal.
A sewing machine body capable of returning travel, and
And a cutting blade for cutting the tatami floor, a flat needle and a reverse stitch
Sewing machine and a control device for controlling the sewing machine main body.
The control device is arranged on the tatami mat by the tatami mat floor fastening means.
The upper and front sides of the fixed tatami floor are stabbed with the above stab needle.
At the same time as cutting with the cutting tool, and releasing the tatami floor fastening means.
Release to change the direction of the tatami floor by the direction changing means,
After the tatami floor is pushed into place by the tatami floor pushing means
At the lower front side of the tatami floor fixed by the tatami floor fastening means,
Piercing with a sewing needle and removing the habit with the cutting blade,
Release the tatami floor tightening means, and
The direction of the floor is changed, and the tatami floor is pushed by the tatami floor pushing means.
After pushing it into the predetermined position, it is fixed by the tatami floor tightening means.
Sewing the upper front side of the tatami mat floor
Then, the tatami floor tightening means is released and the direction changing means
The direction of the tatami floor is changed, and the tatami floor is used as the tatami floor pushing means.
After pushing it into the predetermined position by the tatami floor tightening means
Reverse stitch the lower front side of the fixed tatami floor with the reverse stitch
The vehicle is configured to perform automatic driving . By adopting such a configuration,
Only one drive source such as a traveling motor is required. Not only is the overall length of the machine short, so there is little restriction on the installation space, and there is no risk of operators being caught between sewing machines as in the conventional example. It became. By adopting such a configuration,
Even if the lower front side is cut and sewn after the upper front side is cut and sewn, labor saving is achieved by automating the direction change and positioning of the tatami floor. An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1 showing the overall configuration in a plan view and FIG. 2 showing an elevation view, 1 is a pair of frames in the longitudinal direction, and rails 2 and 3 are provided between the frames 1 in the longitudinal direction. Reference numeral 4 denotes a tatami mat table, which is provided between the pair of frames 1 and includes a tightening means 6 including a tightening bar 6A for tightening and fixing the tatami floor 5 from above, and the tightening bar 6A is provided with a telescopic member. The tatami floor 5 placed on the tatami mat 4 can be tightened and freely opened by sliding vertically along the vertical axis 6B via one cylinder 7, the relay lever 8, the interlocking rod 9, and the like. Reference numeral 10 denotes a tatami sewing machine, which is a sewing machine base 11.
And a main body 12 of the sewing machine.
Can travel reciprocally on the rails 2 and 3 along the longitudinal direction of the tatami table 4. The reciprocating traveling means is constituted by a traveling motor (traveling driving body) employing a chain transmission means, a rack and pinion means and the like. You. The sewing machine body 12 is the sewing machine stand 1
1 is reciprocally movable as shown by an arrow Y in FIG. 1 and is provided on the sewing machine stand 11 so as to be reciprocally movable in the width direction of the tatami mat 4 as shown by an arrow X in FIG. The rotation of the manual handle 13 and the driving of the motor 14 cause the interlocking shafts 15 and 16 to rotate around the axis via the bevel gear 17, and move the sewing machine main body 12 relative to the sewing machine stand 11 in proportion to the rotation of the interlocking shaft 16. The tatami table 4 can be moved and adjusted in the width direction. The sewing machine body 12 is provided with a sewing needle 18 for piercing a helicopter paper and a helicopter cloth in front of and below the tatami floor 5 and a cutting blade 19 for cutting the tatami floor after sewing. This is a dual-use machine provided with a sewing needle 20 for performing sewing. That is, the tatami-mat sewing machine 10 is capable of performing both flat stitching and reverse stitching with a single sewing machine. In the embodiment shown in FIGS. 1, 2 and 5, and in FIGS. 7 and FIG. 8 can be adopted. First, in the dual-purpose machine 10 of the first embodiment shown in FIGS. 1, 2 and 5, a needle holder 23 is interlocked to a rotary disk 21 fixed to an output shaft of a motor via a crank rod 22. The needle holder 23 has a flat piercing sewing needle 18.
The needle 20 for reverse stitching is a curved needle provided on a swingable needle holder 24, and the needle holder 24 is connected to a motor via a crank rod 25. Is connected to a rotating disk 26 fixed to an output shaft of the sewing machine, and can be operated to perform reverse stitching. In the dual-purpose machine 10 according to the second embodiment shown in FIGS. 6A and 6B, only one sewing motor 27 is provided, and the motor output system includes a relay shaft 30 having a clutch 29 via a chain 28. , And is branched from the relay shaft 30 to respective turntables 21 and 26 via chains 31 and 32. In other words, by turning on or off the clutch 29 (reference numeral 33 is a shifter and reference numeral 34 is a shifter cylinder), one of the rotating disks 21 and 26 is rotated, and the sewing needle 1 is rotated via the crank rods 22 and 25.
The hands 8 and 20 are configured to be movable. In the dual-purpose machine 10 of the third embodiment shown in FIG. 7, the sewing needle 20 for reverse stitching is a straight needle.
Since the basic configuration and operation are common to those of the first embodiment, common parts are indicated by common reference numerals. The dual use machine 10 of the fourth embodiment shown in FIG. 8 utilizes the sewing needle 18 of the first embodiment also for reverse stitching, and is inclined horizontally when the tatami mat 5 is flat sewn and inclined when reverse sewn. Things. 1 to 4, reference numeral 35 denotes a tatami mat 4
Are fixed to the tatami table 4 via brackets 36 at both ends in the longitudinal direction. A scale member 37 is provided near the cutting blade 19 of the sewing machine main body 12 and has a bearing 38 that slides in the longitudinal direction of the linear reference ruler 35 to follow. Reference numeral 39 denotes a first position detecting means, which comprises an encoder or the like, and includes a scale member 39 and the sewing machine main body 1.
2 to detect a relative position of the tatami mat 4 in a direction orthogonal to the tatami mat 4. The detecting means 39 is provided in Japanese Patent Publication No. Sho 62-389.
As disclosed in Japanese Patent Publication No. 73-73, it may be configured by a linear magnetic scale provided on a scale member and a magnetic sensor provided on a sewing machine main body. Reference numeral 40 denotes second position detecting means for detecting the position of the sewing machine main body 12 in the longitudinal direction of the tatami mat.
A rotary magnetic scale 42 provided on the rotary shaft 41 and a magnetic sensor 43 arranged close to the rotary magnetic scale 42, and the sensor 43 detects the rotational position of the rotary shaft (travel axis) 41 from the scale 42.
A control device 44 includes a microcomputer 45 and a motor drive circuit 46 for driving the motor 14, and the control device 44 performs the following operation. In the case of a flat stab, the tatami mat obtained by measuring the floor plan is cut and sewn, that is, as shown in FIG. 9, a plurality of reference points A and A in the longitudinal direction of the tatami mat (hereinafter referred to as Y-axis direction). B, C,
The tatami width direction with respect to the lower front reference line L in D and E (hereinafter referred to as X
Axial distances X ₀ , X ₁ , X ₂ , X ₃ ,
When X ₄ is input by operating the key switch,
Based on the set dimensions, the macro computer 45 converts and calculates the target value of the X-axis at each step (every 10 mm of Y-axis feed) so that the dimension reference surface 35A of the ruler 35 becomes a reference. Then, when the cutting blade 19 is aligned with the cutting start position and the sewing machine stand 11 is moved in the Y-axis direction by rotating the manual handle 13 or driving a motor (not shown) connected to the rotating shaft 41, the microcomputer 45 A detection signal from the second position detection means 40 is input, and a current position in the Y-axis direction based on the cutting start position is calculated numerically, and a target position in the X-axis direction with respect to the current position in the Y-axis direction. (Set position) is calculated based on the cutting start position. At the same time, the microcomputer 45 detects the X of the sewing machine main body 12 based on the detection signal from the first position detecting means 39.
The current position in the axial direction is counted based on the dimension reference surface 35A of the ruler 35. Then, the microcomputer 45 operates so that the difference between the current position in the X-axis direction obtained by the detection signal of the first position detection means 39 and the target position in the X-axis direction disappears.
By controlling the motor drive circuit 46, the sewing machine main body 12 is moved to the target position by driving the motor 14. Reference numeral 47 denotes a direction changing means, which sew the upper front side of the tatami floor 5 as shown in FIGS. 2 to 4 and then sew the lower front side (habit removal side) of the tatami floor 5. The tatami floor piercing member 4 that changes direction on the table 4 and swings from the F position to the G position in FIG.
9, a pinion 53 is provided on a pivot shaft 52 of a lift table 51 which moves up and down by the operation of the third telescopic cylinder 50, and a fourth telescopic cylinder 55 which operates on a rack 54 meshed with the pinion 53 is provided. . Accordingly, after the upper front side is cut and sewn, the fastening means 7 is released, and then the tatami mat piercing member 49 is operated from the F position to the G position, and the tatami mat 5 is once separated from the sewing machine main body 12 to temporarily separate the sewing machine main body. 12 is retracted and the tatami floor 5 is once lifted from the fourth tatami mat.
The tatami floor 5 can be turned 180 ° through the pinion racks 55 and 54 by operating the fourth cylinder 55 in a state where the tatami floor 5 is held by the upper piercing needle (reference number omitted). Then, the elevator 51 is lowered to place the tatami floor 5 on the tatami platform 4 with the lower front side facing the sewing needles 18 and 20 of the tatami sewing machine 10. Reference numeral 56 denotes a tatami floor pushing means, which pushes the upper front side of the tatami floor 5 placed on the tatami mat 4 in the direction of arrow H in FIG. The configuration is as follows as shown in FIGS. Tatami stand 4
In the vicinity of the central portion in the longitudinal direction, a forward / reverse drive motor 57 is provided, and an interlocking shaft 59 having pinions 59A at both ends via an interlocking gear 58 is provided along the output shaft of the motor along the longitudinal direction of the tatami mat. On both sides in the longitudinal direction of the tatami table, the pinion 59 is provided.
A pair of racks 60 meshing with A are provided, and the racks 60 are fixed to a pair of traveling stands 61. Therefore, the traveling platform 61 is reciprocally movable via the rack and pinion in the width direction of the tatami platform 4 by the activation of the drive motor 57, and the traveling is smoothly performed by the guide rail 62. A lower front ruler, that is, a pressing bar 65 is connected to each of the traveling platforms 60 via upper and lower pairs of links 63 and 64.
The pressing bar 65 is provided along the longitudinal direction of the tatami table 4 and is located on the opposite side of the tatami sewing machine 10. The pressing bar 65 can swing up and down around a support shaft 66 in a posture facing the upper front side of the tatami floor 5 on the tatami table 4 and a posture lowering therefrom. Have been. Accordingly, when the tatami floor 5 whose upper front side is cut and sewn is turned by the direction changing means 47 and placed on the tatami table 4, the pressing bar 65 is folded by the operation of the fifth telescopic cylinder 67. Then, the motor 57 of the tatami floor pushing means 56 is activated and the lower front side of the tatami floor 5 is moved toward the sewing machine body 12 by the pressing bar 65. At this time, in order to calculate the position of the lower front reference line L on the lower front side, the position is checked with a detection sensor 68 such as a proximity switch, and the width of the tatami floor 5 moved from the lower front reference line L in the width direction on the lower front side. The separation distance X ₀ is calculated, the pressing bar 65 is moved in the direction of arrow H so that the calculated value is attained, the positioning is performed, and then the tatami floor 5 is fixed to the tatami table 4 by the fastening means 7, and Under the control, the tatami mat sewing machine 10 travels along the tatami mat 4 so as to cut and sew the lower front side of the tatami floor 5 by sewing. After the pressing bar 65 is aligned with the tatami floor 5, it is lowered and restored to the previous position for the next preparation. However, when the bar 65 is lowered, a work space can be secured, which is advantageous. Some but not required. The reciprocating movement of the pressing bar 65 may be, for example, a wrapping type, other than the rack and pinion. Next, the automatic operation from the start signal to the completion of tatami sewing will be outlined below. B) When preparation work such as fixing the tatami floor 5 placed on the tatami floor 4 with the tatami floor tightening means 6 is completed, by pressing a start signal, the dual use machine 10 is moved from the start position in FIG. When the vehicle travels forward, the edge cloth is stabbed and sewn on the upper front side of the tatami floor 5 by the sewing needle 18 and cut by the cutting tool 19. After the upper front side stab stitching and cutting is performed, the tatami floor tightening means 6 is released, and then the dual use machine 10 returns to the position before the start. (B) the tatami floor 5 is turned by the reversing means (direction changing means) 47 so that the lower front side of the tatami floor 5 is set to the sewing needle 18 side;
After the tatami mat floor 6 is pushed into a predetermined position by the tatami mat floor fixing means 6, the tatami mat floor 5 whose upper front side has been stabbed is fixed to the tatami mat stand 4. (C) The amphibian 10 is advanced again to perform the flat sewn sewing while the lower and front sides of the tatami floor 5 are subjected to a hammering motion by numerical control, and then the tatami floor 5 fixed by the tatami floor fastening means 6 is released. Thereafter, the dual-use device 10 returns to the original position (during this time, the upper front edge folding operation and the like are completed). (D) The direction of the upper front side is changed to the sewing needle 20 by the direction changing means 47, and the tatami mat 5 on which the upper front edge has been folded is pushed into the reverse sewing position by the pushing means 56, and the tatami mat floor 5 is folded by the tatami mat floor fastening means 6. Fix to the table. E; The amphibian 10 is moved forward, and the upper and
After the reverse stitching is completed,
After releasing the tatami floor 5 fixed by the tatami floor tightening means 6, the dual use machine 10 returns to the original position (during this time, the lower front edge folding operation is completed). (F) The direction of the lower front side where the edge folding is completed is changed to the sewing needle 18 side by the direction changing means 47, and the lower front side is pushed to the reverse sewing position by the pushing means 56, and the tatami floor 5 is put on the tatami mat 4
Is fixed by the fastening means 6. G: The amphibian 10 is advanced to move the lower front side of the tatami floor 5 to the sewing needle 20.
After the reverse stitching, the tatami floor 5
Is released, and the dual-purpose machine 10 is returned to the original position, thereby completing the entire process. As described in detail above, according to the present invention, the lower front habit removal sewing operation using the dual-purpose machine can be automatically performed by numerical control. Compared to the conventional example in which a reverse stitcher is installed side by side, only one traveling motor (traveling drive source) is used, the overall length of the machine can be shortened, installation space is less restricted, and the number of machine parts is reduced and maintenance is reduced. This facilitates the operation, and prevents an operator or the like from being pinched between the flat piercing machine and the reverse sewing machine.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic plan view showing the overall configuration of the present invention. FIG. 2 is a schematic elevation view of the same. FIG. 3 is a partially omitted plan view of a tatami stand portion. FIG. 4 is a partially omitted front view. FIG. 5 is a schematic front view showing the first embodiment of the amphibian. FIG. 6 shows a second embodiment of the dual-use machine, (1) is a schematic front view, and (2) is an explanatory diagram of a needle transmission system. FIG. 7 is a schematic front view showing a third embodiment of the amphibian. FIG. 8 is a schematic front view showing a fourth embodiment of the amphibian. FIG. 9 is an explanatory diagram of a habit removing operation. [Description of Signs] 4 tatami mat 5 tatami floor 6 tatami floor tightening means 10 dual use machine 18 flat staple sewing needle 20 reverse sewing needle 47 direction changing means 56 pushing means

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D05B 1/00-97/12

Claims (1)

(57) [Claims] (1) A tatami mat on which a tatami floor is placed, direction changing means for changing the direction of the tatami floor on the tatami mat, and Tatami floor pushing means to move to
When a unit with tatami clamping for fixing the tatami the tatami floor, provided reciprocally travel along the longitudinal direction of the mat base
One sewing machine stand, and a reciprocating machine provided on the sewing machine stand in the width direction of the tatami mat stand.
Sewing machine body, and a cutting blade provided on the sewing machine body to cut a tatami floor
And a control device for controlling the sewing machine main body. The control device is fixed to the tatami mat by the tatami mat floor fastening means.
The upper and front sides of the specified tatami floor are stabbed with the stab needle.
Together with the cutting tool to release the tatami floor fastening means.
The direction of the tatami floor is changed by the direction changing means.
Is pushed into place by the tatami floor pushing means.
The lower and front side of the tatami floor fixed by the fastening means
Stab with a sewing needle and remove the habit with the cutting blade.
Release the tatami floor tightening means and use the direction changing means to
The direction is changed and the tatami floor is pushed by the tatami floor pushing means.
And then fixed by the tatami floor tightening means.
Reversely sew the upper front side of the folded tatami floor with the reverse needle.
Release the tatami floor fastening means and use the direction changing means to
Direction, and the tatami floor is pushed by the tatami floor pushing means.
After being pushed into place, it is fixed by the tatami floor tightening means.
Reversely sew the lower front side of the folded tatami floor with the reverse stitch
A tatami sewing machine configured to perform automatic operation .