JPH0354702Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] Industrial Application Field The present invention relates to an L-stitch sewing device that automatically performs L-stitch (right-angle stitch) on the center back of men's clothing.

BACKGROUND TECHNOLOGY Conventionally, as shown in Fig. 5, when performing an L stitch at the center back of men's clothing, the main seam line Sa of the L stitch is sewn continuously in the horizontal direction.
Main seam line Sa, which is the base point for L stitching
Temporarily stop at the end point of , and then move the material W to about 90
Although the direction is changed and the sub-seam line Sb is sewn further, in this work, the direction change is mainly performed by the worker, so it is difficult to handle the material W, and the work is performed continuously. Because of the inability to do this, the work efficiency is extremely poor, and it also has the disadvantage of not being able to change direction accurately.

In addition, when using a formwork formed for L sewing, by fixing the formwork etc., any position on the main seam line Sa, that is, the length of the main seam line Sa, can be adjusted. This method cannot accommodate L-stitching in different cases, and has the disadvantage that separate molds must be manufactured for different dimensions.

Problems that the invention aims to solve This invention improves work efficiency by making continuous L-stitches in the center back of men's clothing, etc., and can also be used with all kinds of materials by making right-angle stitches in any position. In addition, it prevents misalignment and sagging of stitches to stabilize quality, and also prevents distortion and sagging due to deformation of the material during sewing, and is not limited to L stitches, but can also be used with a wide variety of materials. It can also handle materials with irregular curves, and therefore it is not a machine exclusively for L sewing, but is capable of sewing a wide variety of products and for various purposes.
The present invention aims to provide a sewing device.

[Structure of the idea]

Means for Solving the Problems In view of the above, the present invention has a sewing machine head disposed behind the placing part of the table on which the material is placed, and a sewing machine head horizontally mounted on the front mold of the sewing machine head with one end as a fulcrum. The guide rail is horizontally mounted so that it can swing freely in the direction of the sewing machine. It can be attached and detached freely so as to match the main seam line of the material placed on the mounting section, and the guide body is arranged at the rear of the side edge of the guide rail and on the left side of the sewing machine head. The straight edge of the guide body is made movable in a direction perpendicular to the processing direction, and the straight edge is arranged so as to match the sub-seam line of the material W placed on the loading section. The present invention aims to solve the above-mentioned drawbacks by providing an L-stitch sewing device in which the guide rail is slidably supported in the processing direction by a support section of a connecting rod that interlocks with the guide body. .

Function In the present invention, the guide rail is moved to the left side while lowering the guide rail and aligning the side edge of the guide rail with the main seam line of the material placed on the placing section and pinching the material. After sewing the entire main seam line from the end of the material along the side edge of the guide rail, stop moving the guide rail to the left, then lower the guide body and sew along the straight edge of the guide body. By moving the guide body forward while holding the material in line with the sub-seam line of the material, the entire sub-seam line is sewn along the straight edge of the guide body, and then by moving the guide body backward. Backstitching of a predetermined size is performed.

In addition, in such a state, the guide rail can swing horizontally using one end as a fulcrum, and can also slide in the processing direction by the support of the connecting rod that interlocks with the guide body. As the guide body moves, the entire material can be moved in a direction perpendicular to the processing direction while maintaining the state in which the material is held between the guide rails.

Embodiment An embodiment of the present invention will be described below based on the drawings. 1 is an abbreviation in which the main seam line Sa in the horizontal direction and the sub-seam line Sb in the vertical direction are continuous in the center back of men's clothing or the folds of a skirt, etc. This is the main body of an L-stitch sewing device that performs L-shaped L-shaped stitches (right-angle stitches), and one side protrudes forward, which is the working position side, in order to place the material W on the upper part of the base 2. A table 4 having a placing part 3 is disposed, and suction holes 5, 5 connected to an appropriate suction device (not shown) are provided on the front side (work position side) of the placing part 3 of the table 4.
a... is bored, and the material W is drawn through the suction holes 5, 5a...
It supports adsorption.

Reference numeral 6 denotes a sewing machine head of the sewing machine M, and a needle position 7 of the sewing machine head 6 is disposed at an appropriate position on the rear side of the mounting section 3 of the table 4.

Reference numeral 8 denotes a transfer mechanism for transferring the material W to the needle position 7, and a frame 9 above the table 4 is driven by an appropriate drive device (not shown) to longitudinally move the material W along the left and right processing direction X-X corresponding to the needle position 7. shaped support 1
0 is attached so that it can move forward and backward.

Also, the cylinder 11 is placed upside down from one end of the support 10, and the rod 12 of the cylinder 11 has a
A horizontal guide plate 13 extending forward (to the working position side) is fixed via a support rod 14, and a support rod 15 is attached to the other end.
A cylinder 1 is installed vertically at the lower end of the support rod 15.
6. A vertically movable clamp mechanism 19 composed of a link mechanism 17 and leaf springs 18, 18a is mounted so as to be horizontally rotatable.

In addition, the clamp mechanism 19 has an L-shaped cross section and a non-slip member 2 such as rubber on the lower surface.
0 is fixed at one end of the guide rail 21, and the rollers 23, 23a are pivotally mounted above and below the vertical piece 22 projecting upward from the other end of the guide rail 21, with an appropriate interval between them. roller 2
3 and 23a, the guide rail 21 is made to correspond to the processing direction XX, and the guide rail 21 is positioned in front of the needle of the sewing machine head 6 (on the working position side). It's hanging horizontally.

Then, the side edge 71 of the guide rail 21 facing the needle of the sewing machine head 6 is aligned with the main seam line Sa corresponding to the processing direction X-X of the material W placed on the placement part 3 of the table 4. The guide rail 21 is controlled so as to be attached and detached freely, and the guide rail 21 is made to be able to swing freely in the horizontal direction about the axis of the support rod 15 as a fulcrum.

Although the shape of the guide rail 21 is formed in a straight line as shown in the figure, it is not limited to such a shape at all, and can be formed along the main seam line of the material W.
It is also possible to use one formed with an appropriate curve so as to match Sa.

24 is a right angle transfer mechanism that transfers the material W in a direction perpendicular to the left and right processing direction X-X;
A linear guide 26 is fixed to the table 4 on the left side of the table 4 via a support plate 25, a sliding body 27 is slidably attached to the linear guide 26, and a plate 28 is fixed to the sliding body 27.

Further, the front portion of the plate 28 extends forward to the vicinity of the sewing machine head 6.

Reference numeral 29 designates a tandem cylinder, and the rear rod 30 of the tandem cylinder 29 is connected to a stay 31 that is erected and fixed behind the support plate 25, and the front rod 32 is connected to a stay 33 that is erected and fixed at an appropriate position on the plate 28. connected to plate 28
It is controlled to move forward and backward.

34 is a connecting rod, the rear end of the connecting rod 34 is pivotally connected to the plate 28, and the leading end of the connecting rod 34 includes a fixed arm 36 with a roller 35 pivotally attached thereto, and a swinging arm with a roller 35a pivotally attached thereto. 37, and the guide rail 21 is sandwiched between the pair of rollers 35 and 35a of the support part 38, and is supported slidably in the processing direction XX.

Reference numeral 39 denotes a cylinder, and the cylinder 39 is fixed to the left side of the tandem cylinder 29 and horizontally to the plate 28 via a support member 40, and the rod 41 of the cylinder 39 is attached to the plate 28.
It is connected to a swinging arm 43 pivoted on the left side of a block 42 fixed to the front part of the swinging arm 4.
The swinging arms 44, 44a, which are aligned with the swinging arm 43 by about 90 degrees and interlocked with the swinging arm 43, are aligned with the block 4.
It is pivoted on the right side of 2.

49 is formed into a substantially T-shape, and has a short head portion 4.
A guide body 49 fixes a non-slip member 48 to the lower surface of the guide rail 2.
It is disposed at the rear of the side edge 71 of the sewing machine 1 and on the left side of the sewing machine head 6.

Further, a substantially L-shaped support member 45 having a hanging front end is pivotally attached to the swing arms 44, 44a, and the short head of the guide body 49 is attached to the lower end of the vertical piece 46 of the support member 45. The straight edge 50 of the portion 47 is in the processing direction X- of the material W placed on the placement portion 3 of the table 4.
The guide body 49 is mounted so as to be aligned with the sub-seam line Sb perpendicular to X, and the guide body 49 is controlled to be attached to and detached from the table 4 by the operation of the cylinder 39.

Reference numeral 51 denotes a ruler moving mechanism, which fixes cylinders 52, 52a horizontally at an appropriate interval to the rear part of the placing part 3 of the table 4.
A ruler mounting plate 54 is connected to the rods 53, 53a of 2a, and the ruler mounting plate 54 is controlled to move forward and backward.

In addition, a ruler 55 is detachably attached to the ruler device plate 54, and the dimensions are displayed with the left side as the starting point and the right side as the ending point. Alternatively, it may be formed in the same manner as the guide bar 21 so as to match the seam line.

56, 56a are keeper devices, and the keeper devices 56, 56a fix pressing pins 57, 57a... each having a hanging tip end to the pressing pin mounting members 58, 58a in a comb-teeth shape, and Mounting members 58, 58a are mounted on the ruler mounting plate 54 via leaf springs 59, 59a so as to be vertically swingable.

Further, in order to press the pressing pin mounting members 58, 58a so that the tips of the pressing pins 57, 57a... can be attached to and detached from the table 4, the pressing pin mounting members 58, 58a are attached.
Pressing shafts 61, 61 are connected to the upper opposing positions of 8a via stays 60, 60a fixed to the ruler mounting plate 54.
The driving portions 62, 62a are mounted with the portion a protruding downward.

In addition, 63 and 63a in the figure are guide rods, 64,
64a is a guide, and 65 is a photoelectric sensor that detects the edge of the material W.

Reference numeral 66 denotes a sewing dimension setting section for arbitrarily setting the starting point of the L stitch, or the starting point and end point of the skip stitch. A dimension setting device in which a ruler 67 with a dimension indicated so as to form an end point is attached, and an actuating piece 69 is provided to actuate the limit switch 68 by abutting the ruler 67 with a limit switch 68 attached to one end of the support 10. A container 70 is mounted so as to be slidable in the processing direction XX.

By using a plurality of dimension setting devices 70, the starting point and ending point of sewing can be arbitrarily set.

Next, to explain the operation of the L-stitch sewing device according to the present invention, the ruler 55 of the ruler moving mechanism 51 is moved forward by a predetermined distance by the operation of the cylinders 52, 52a, and the material W is brought into contact with the ruler surface of the ruler 55. and set it.

In this state, the material W is held in a fixed state on the mounting portion 3 by the suction action of the suction holes 5, 5a, . . . .

Next, the tips of the pressing pins 57, 57a... of the keeper devices 56, 56a attached to the ruler mounting plate 54 are pressed by swinging downward to the mounting section 3 by the operation of the drive sections 62, 62a. pins 57, 57
The material W is clamped and fixed at the tip of a.

Next, the base point for performing L stitching on the material W is set using the ruler 55, the dimension setting device 70 is set on the ruler 67 of the sewing dimension setting section 66 corresponding to the set base point, and the guide rail 21 is mounted. The clamping mechanism 1 moves the guide rail 2121 to a position facing above the workpiece W placed on the placing section 3.
9. Activate the cylinder 11 to lower the material W
The side edge 71 of the guide rail 21 is aligned with the main seam line Sa of the guide rail 21, and the guide rail 21 is clamped and fixed.

Next, by moving the guide rail 21 to the left side, the photoelectric sensor 65 detects the end of the material W and sews it from a predetermined position.During this sewing process, the limit switch 68 attached to the support 10 operates as a dimension setting device. When the guide rail 21 reaches the position where it comes into contact with the operating piece 69 of the guide rail 21, the limit switch 68 is activated to stop the guide rail 21 from moving to the left.

In addition, during such movement, the keeper device 5
6 and 56a are released.

Then, the cylinder 39 of the right angle transfer mechanism 24 is operated to lower the guide body 49, and the guide body 49 is lowered.
The straight edge 50 of 9 is the sub seam line of material W.
Align with Sb and clamp and fix.

Thereafter, the rear rod 30 of the tandem cylinder 29 is extended, and the front rod 32 is extended, so that the entire sub seam line Sb in the L stitch is aligned with the straight edge 50 of the guide body 49.
Then, the front rod 32 is retracted to perform reverse stitching of a predetermined size.

In addition, in such a state, the guide rail 21
One end of the guide rail 21 is attached to a clamp mechanism 19 that is horizontally rotatable about the axis of the support rod 15, and the other end of the guide rail 21 is slidable toward the working position with respect to the horizontal guide plate 13. supported by
Furthermore, a connecting rod 34 whose one end is pivotally connected to the plate 28
a pair of rollers 35 provided on the support portion 38 at the tip of the
Since the guide rail 21 is slidably supported and connected in the processing direction XX by the guide rail 35a, the material W is clamped by the guide rail 21 as the plate 28 (guide body 49) moves. The entire material W is moved in a direction perpendicular to the processing direction XX while maintaining the state.

[Effect of idea]

In short, the present invention has a sewing machine head 6 disposed behind the placing part 3 of the table 4 on which the material W is placed, and is capable of sliding freely in the horizontal direction using one end as a fulcrum in front of the sewing machine head 6. The horizontally suspended guide rail 21 is configured to be movable back and forth along the left and right machining direction Part 7
1 can be attached and detached freely so as to coincide with the main seam line Sa of the material W placed on the mounting section 3, and it is located at the rear of the side edge 71 side of the guide rail 21, and the sewing machine head 6 A guide body 49 is arranged on the left side of the guide body 49, and a straight edge 50 of the guide body 49 is aligned with
- It can move forward and backward along the direction orthogonal to Since the guide rail 21 was supported slidably in the processing direction XX by the support part 38 of the connecting rod 34 that interlocks with the guide body 49, the guide rail 21 was lowered and placed on the mounting part 3. Guide rail 2 on main seam line Sa of material W
By moving the guide rail 21 to the left side while aligning and holding the side edges 71 of the material W.
After sewing the entire main seam line Sa from the end of the guide rail 21 along the side edge 71 of the guide rail 21, the movement of the guide rail 21 to the left is stopped, and then the guide body 49 is lowered, and the guide body 49 By moving the guide body 49 forward while holding and aligning the straight edge 50 of the material W with the sub-seam line Sb of the material W, the sub-seam line of the L sewing can be adjusted.
By sewing the entire area of Sb along the straight edge 50 of the guide body 49, and then moving the guide body 49 backward and performing backstitching of a predetermined size, sewing in the horizontal direction and sewing in the right angle direction can be continued. Because of the continuous sewing, there is no need to handle the material W during the sewing process compared to conventional methods, which greatly improves work efficiency.Also, since the sewing location is always held down by the guide rail 21 and guide body 49, there is no possibility of sewing misalignment. , the quality can be stabilized without sagging, and the guide rail 21 and the guide body 49 can be sewn along the guide rail 21 and the guide body 49.
9 and the guide rail 21 are connected, so as the guide body 49 moves, the guide rail 21 can move in the direction perpendicular to the processing direction XX while holding the material W. A perfect seam line can be formed without distortion or sagging that occurs due to deformation of the material W during sewing of the seam line Sb.

Also, at any point on the sewing line of the main seam line Sa in the horizontal direction, a sub seam line
Since the Sb (right angle stitch) location can be easily set, it is possible to handle all types of materials W with different dimensions.

Furthermore, it is not limited to L stitching, and can be applied to a wide variety of materials W by simply operating the guide rail 21, and by matching the shape of the guide rail 21 to the seam line, it is possible to sew materials with irregular curves. The practical effects of this machine are enormous, as it can also be used for W stitches, and can therefore be used not only as a machine exclusively for L stitches, but also as a machine that can sew a wide variety of products and for various purposes.

[Brief explanation of drawings]

The figure shows one embodiment of the present invention.
The figure is a perspective view of the L-stitch sewing device according to the present invention.
The figure is a perspective view of the main parts of the same as above, Figure 3 is a front view of the same as above,
FIG. 4 is a perspective view of the main part of the dimension setting section, and FIG. 5 is a diagram showing the shape of the material. 3... Placement section, 4... Table, 6... Sewing machine head, 7... Needle position, 21... Guide rail, 3
4... Connecting rod, 49... Guide body, 38... Support portion, 50... Straight edge, 71... Side edge.

Claims (1)

[Scope of utility model registration request] A sewing machine head is arranged behind the placing part of the table on which the material is placed, and a guide rail is installed horizontally in front of the sewing machine head so as to be able to swing freely in the horizontal direction with one end as a fulcrum. The guide rail can move forward and backward along the left and right processing directions corresponding to the needle position, and the side edge of the guide rail facing the needle on the sewing machine head is aligned with the main seam line of the material placed on the mounting section. A guide body is arranged at the rear of the side edge side of the guide rail and on the left side of the sewing machine head, and the straight edge of the guide body is arranged in a direction perpendicular to the processing direction. , and can be attached and detached so that the straight edge coincides with the sub-seam line of the material W placed on the placement section, while supporting a connecting rod that interlocks with the guide body. An L-stitch sewing device characterized in that a guide rail is slidably supported in the processing direction at the section.