JP6425550B2 - Side sewing machine - Google Patents

Description

  The present invention relates to a side stitch sewing machine which continuously holds over stitches by holding in a straight line a seam line under the body on which sleeves are sewn together and a seam line extending from the side of the sleeve to the cuff direction.

Conventionally, as described in Patent Document 1, a cloth presser (guide rail in the document) is lowered and held along a seam line on a cloth placed on a table, and the cloth presser is moved by moving the cloth presser horizontally. It has been made to slide and move to the needle drop position of the sewing machine.
In the case of sewing garments with sleeves such as shirts, the front and back bodies are joined with a line on the shoulders, and then the sleeves are joined to the front and back bodies, and then the armpits of the body In some cases, oversewing may be carried out continuously by holding the seam line and the seam line extending in the direction of the cuff from the side of the sleeve in a straight line.
In this case, the seamed end between the sleeve and the body sewn in advance is sewn in a state of being folded down. Usually, the joint end between the sleeve and the body is folded down in the same direction on the left and right, for example, in the direction of the cuff.

Japanese Utility Model Publication No. 03-54702

However, in the invention described in Patent Document 1, the sewing target is L-stitching centered on the back of men's clothes, and both sides of the seam line can be pressed by the presser foot (guide rail in the same document).
On the other hand, in the case of the above-mentioned side stitching, the cloth cutting knife provided in front of the sewing needle is used to oversewing the cut edge of the cloth along the seam line. I can only hold back.
Under the condition that only one side of the cloth is pressed, when the cloth is fed to the cloth feeding member provided on the sewing machine head, the joint end between the sleeve and the body is kept folded in the specified direction. In particular, when the specified folding direction is the direction opposite to the sewing direction, there is a possibility that the sheet may be folded down on the opposite side to the specified direction and sewed.

  Therefore, the present invention is a side stitch sewing machine that continuously holds oversewing by holding a seam line under the body on which the sleeve is sewn together and a seam line extending from the side of the sleeve to the cuff direction in a straight line. An object of the present invention is to carry out cloth feeding while accurately holding a joint end portion of a sleeve and a body in a state in which the joint end is folded down in a specified direction and to perform accurate sewing.

The invention according to claim 1 is a side which performs continuous oversewing by holding in a straight line the seam line under the body on which the sleeve is sewn together and the seam line extending from the side of the sleeve to the cuff direction. In sewing machines,
A table on which to place the cloth,
A sewing machine head for sewing the cloth placed on the table;
And a presser foot conveyance device for moving the cloth on the table by having the presser foot moving in the sewing direction along the cloth placing surface of the table while pressing the cloth on the table.
The sewing machine head has a cloth feeding member for feeding the cloth in the sewing direction,
The presser foot has a main presser foot and a secondary presser foot,
The main presser comprises an elongated member which is pressed from end to end of the cloth in the sewing direction, and is supported so as to be lifted and lowered by a lift mechanism.
The secondary presser is attached to the main presser so as to move along with the main presser.
The secondary presser extends when the presser conveyance device conveys the cloth placed at the predetermined position on the table with the joint end between the sleeve and the body aligned with the predetermined reference position in the sewing direction. And holding the joint end.

The invention according to claim 2 is the side stitch sewing machine according to claim 1.
The auxiliary presser foot is connected to the main presser foot via an elevating mechanism, and the lower end of the auxiliary presser foot is raised above the upper end of the main presser foot at the time of retraction.

The invention according to claim 3 is the side stitch sewing machine according to claim 1 or 2.
The tip end portion of the sub cloth presser is formed in a plate shape parallel to the cloth mounting surface of the table,
The tip portion may be captured and passed along with the cloth by the cloth feeding member.

The invention according to claim 4 is the side stitch sewing machine according to any one of claims 1 to 3.
The cloth presser moves upward from the back of the sewing machine head along the sewing direction in a raised state, and when moving, the contact with the sewing machine head is avoided in a state where the sub cloth presser retracts. I assume.

The invention according to claim 5 is the side stitch sewing machine according to any one of claims 1 to 4.
A plurality of cloth arrays are arranged in front of the sewing machine head along the sewing direction, and the cloth end pressing member facing the cloth end installation area from the outside is moved up and down to move the cloth from before descent to after descent Equipped with a cloth end presser that temporarily holds the cloth end,
The cloth end presser is
A first cloth end presser that holds the end of the cloth along the seam line extending from the side of the sleeve to the direction of the cuff;
A second cloth end presser for pressing the joint end;
And a third cloth end presser that holds the cloth end along the seam line under the body.
A display lamp is provided on each cloth end presser, and the plurality of cloth end presser members are divided down at least twice and sequentially lowered, and at that time, the operator who installs the cloth on the table is the first and the next A display lamp corresponding to the cloth end pressing member is turned on prior to the descent in order to notify of the cloth end pressing member which is sequentially lowered.

The invention according to claim 6 is the side stitch sewing machine according to any one of claims 1 to 5,
An air blow device is provided for blowing air in the cloth end direction so as to prevent curling of the side cloth end to be sewn with respect to the cloth placed on the table and pressed by the cloth presser.

The invention according to claim 7 is the side stitch sewing machine according to claim 6.
A plurality of air blowout nozzles of the air blow device are provided, a part of which is installed on the main cloth presser, and another part of which is installed at a fixed position with respect to the sewing machine head,
The nozzle installed on the main cloth presser is fixed at a predetermined position on the sewing machine head side from the sub cloth presser in the sewing direction when the cloth is transported by the cloth presser conveying device, and moves together with the main cloth presser. ,
The nozzle fixed in position with respect to the sewing machine head is characterized in that it is disposed at a predetermined position in front of the sewing needle.

The invention according to claim 8 is the side stitch sewing machine according to claim 7.
A plurality of nozzles arranged in the sewing direction are provided for the nozzles installed on the main presser,
The nozzles fixed in position with respect to the sewing machine head are provided with a plurality of nozzles disposed forward and backward from a front end of the cloth feeding member for catching the cloth.

The invention according to claim 9 is the side stitch sewing machine according to any one of claims 1 to 8,
It is characterized in that the cloth feeding member is a pair of upper and lower endless belts which capture so as to sandwich the cloth.

  According to the present invention, the side seam sewing machine performs continuous oversewing by holding in a straight line the seam line under the body on which the sleeve is sewn together and the seam line extending from the side of the sleeve to the cuff direction. At the time of conveyance for sewing by the cloth holding and conveying device, the auxiliary cloth holding member holds and conveys the joint end between the sleeve and the body and causes the cloth feeding member provided on the sewing machine head to capture the cloth. It is possible to perform sewing accurately by performing cloth feeding while accurately holding the joint end portion in the state of being folded down in the specified direction.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the whole side stitch sewing machine which concerns on one Embodiment of this invention. It is a perspective view which shows the movable body part of a cloth pressing and conveying apparatus, a table, and the cloth mounted on it which concerns on one Embodiment of this invention, The main cloth pressing of a cloth pressing and conveying apparatus raises, a secondary cloth pressing Indicates the retracted state. It is a perspective view which concerns on one Embodiment of this invention, and shows the arrangement | sequence part of several cloth end clamps. It is a perspective view which concerns on one Embodiment of this invention and shows one cloth end presser. It is a perspective view of a sewing machine head concerning one embodiment of the present invention. It is a sewing machine needle of a sewing machine head concerning an embodiment of the present invention, and a detail view of the circumference of it. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows arrangement | positioning of the main elements seen from the front side of the sewing machine head which concerns on one Embodiment of this invention, and shows one scene at the time of sewing. It is a schematic diagram which shows arrangement | positioning of the main elements seen from the front side of a sewing-machine head in one Embodiment of this invention, and shows one scene at the time of non-sewing. FIG. 3 is a partial detail view showing a part of FIG. 2 in detail. It is a control system block diagram of a side stitch sewing machine according to an embodiment of the present invention. FIG. 10 is a partial detail view showing a state in which a secondary presser extends from the state shown in FIG. 9; FIG. 12 is a partial detail view showing a state in which the cloth presser presses the cloth from the state shown in FIG. 11;

A side stitch sewing machine according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1 etc., the side-stitch sewing machine 100 according to one embodiment of the present invention includes a gantry 1, a knee switch plate 2, a table 10, a sewing machine head 20, a cloth pressing and conveying device 30, and a cloth end. A presser 40, a control device and the like are provided.
Three orthogonal orthogonal axes XYZ are shown in the figure. Among them, orthogonal two-axis XY corresponds to orthogonal two-axis coordinates that define the position on the table 10. The X axis is an axis parallel to the sewing direction, that is, the direction in which the cloth is fed during sewing, and the forward direction of the sewing machine head 20 is positive. The Y axis is an axis orthogonal to the X axis, and the direction on the table 10 side as viewed from the sewing machine head 20 is positive. The Z axis is positive in the height direction.
The table 10 is formed long in the X direction, and is for placing a cloth to be sewn and slidingly moving it in the X direction. The sewing machine head 20 sews a cloth placed on the table 10, and is disposed on a side portion of the table 10 at a substantially central position in the X direction, and a part of the table 10 is configured as a needle plate 11. There is.
The table 10 is provided with a suction hole 12. The suction hole 12 and the cloth end presser 40 are disposed forward of the sewing machine head 20 in the X direction. The side-stitch sewing machine 100 is configured with a suction holding device that sucks and holds the cloth placed on the table 10 through the suction holes 12. The suction hole 12 is connected to a control valve and a vacuum source.

The presser foot conveyance device 30 is disposed above the table 10, and is connected to the rails 31 extending in the X direction, the sliders 32, 32 sliding along the rails 31, and the sliders 32, 32. It includes a timing belt 33 moved in the X direction, a drive motor 34 for the timing belt 33, arms 35 and 35 extending downward from the sliders 32 and 32, and a cloth presser 36 connected to the lower end of the arm 35.
The presser foot 36 is composed of a main presser foot 36m and a secondary presser foot 36s as shown in FIG. The main presser foot 36m is formed to be long in the X direction, is an elongated member pressed from end to end of the cloth W in the X direction, and is supported so as to be able to move up and down by an elevating mechanism. The elevating mechanism is constituted by the linkage of the slider 32, the upper L-shaped frame 35a, the vertical cylinder 35b, the lower L-shaped frame 35c, and the main cloth presser 36m, and the lower L-shaped frame 35c and the main cloth presser 36m by extension and contraction of the vertical cylinder 35b. Rises and falls. A main cloth presser 36m is fixed to the lower end of the lower end of the lower L-shaped frame 35c which is bent in the horizontal direction. A shock absorbing material 36m1 such as a sponge is attached to the lower surface of the main cloth retainer 36m.

The secondary presser 36s is connected to the main presser 36m via a lifting mechanism. The elevating mechanism is constituted by the connection of a lower L-shaped frame 35c, a vertical cylinder 35d, a horizontal frame 35e, a horizontal cylinder 35f and a secondary cloth presser 36s, and the horizontal frame 35e, the horizontal cylinder 35f and the secondary cloth presser by extension and contraction of the vertical cylinder 35d. 36s moves up and down relative to the lower L-shaped frame 35c and the main presser foot 36m.
The horizontal cylinder 35f is an actuator for extending and retracting the auxiliary presser foot 36s. The auxiliary presser foot 36s is rotatably connected by an axis in the Z-axis direction, and the output end of the horizontal cylinder 35f is connected to one end radially away from the axis. With the expansion and contraction of the horizontal cylinder 35f, the tip end portion 36s1 of the sub cloth retainer 36s swings within the XY plane to extend and retract.
Although a pair of auxiliary cloth retainers 36s and 36s and their operation mechanisms are provided to correspond to the two arm portions 35, 35, as shown in FIG. 2, the joint end W3 between the sleeve W2 and the body W1. The nearby secondary presser 36s (the secondary presser 36s on the right side in FIG. 2) functions as a secondary presser that presses the joint end W3. When the sleeve W2 is installed in the opposite direction, the opposite occurs. When the direction in which the sleeve W2 is directed is limited to one direction, one can be omitted.

  The side-stitch sewing machine 100 holds a seam line L1 under the side U of the body W1 to which the sleeve W2 is sewn together as shown in FIG. 2 and a seam line L2 extending in the cuff direction from the side U of the sleeve W2 in a straight line. Perform continuous oversewing.

As shown in FIG. 3, a plurality of cloth end retainers 40 are arranged in front of the sewing machine head 20 along the X axis. From the side close to the sewing machine head 20, the first cloth end presser 40a, the second cloth end presser 40b, and the third cloth end presser 40c are arranged in this order.
The first cloth end presser 40a is used to press the cloth end along the seam line L2. Depending on the length of the seam line L2, a plurality of first cloth end retainers 40a may be provided. In the present embodiment, there is one first cloth end presser 40a.
The second cloth end presser 40b is used to press the joint end W3. One second cloth end presser 40b is sufficient to press the joint end W3.
The third cloth end presser 40c is used to press the cloth end along the seam line L1. The third cloth end retainers 40c are provided in a number according to the length of the seam line L2. In the present embodiment, there are four third cloth end retainers 40c, and reference numerals for distinguishing the respective ones are 40c1, 40c2, 40c3 and 40c4 as shown in FIG.
Each cloth end presser 40 is composed of a frame 41, a cylinder 42, a crank 43, a cloth end presser member 44, etc., as shown in FIG. 4 as a representative of the first cloth end presser 40a. The cloth end pressing member 44 swings up and down around an axis parallel to the above. A display lamp 45 is installed on each of the cloth end retainers 40. As the display lamp 45, a colored LED lamp or the like is applied. The fixed position of the display lamp 45 is a position easy for the operator to see.
As shown in FIG. 4, the cloth end pressing member 44 faces the cloth end installation area from the outside. The cloth end installation area is provided at the edge of the table 10 provided with the suction holes 12, and the outside is the negative direction side of the Y axis with respect to the cloth end installation area.

As shown in FIG. 5, the sewing machine head 20 has an upper feed belt 21 and a lower feed belt 22 as cloth feeding members for feeding the cloth W in the sewing direction. That is, the cloth feeding member is configured by a pair of upper and lower endless belts that capture so as to sandwich the cloth.
Further, as shown in FIG. 6, the sewing machine head 20 has a sewing needle 23 and a cloth cutting knife 24 for cutting the cloth forward in the X direction from the sewing needle 23. The upper feed belt 21 is held by the presser foot 27 of the sewing machine head 20.
As shown in the schematic view of FIG. 7, the cloth cutting knife 24, the sewing needle 23, the cloth feeding members (21, 22), and the main cloth presser 36m are arranged in this order along the Y axis.
As shown in FIG. 7, the sub cloth presser 36s extends the tip portion 36s1 to the arrangement range of the cloth feeding member defined by the Y axis, and retracts into the arrangement range of the main cloth presser 36 m as shown in FIG. Provided in
At the time of retraction, the lower end (the lower end portion 36s1 is the lower end) of the sub cloth presser 36s is lifted upward from the upper end of the main cloth presser 36m. Thereby, the secondary presser 36s avoids contact with the main presser 36m.
The front end portion 36s1 of the sub cloth holder 36s is formed in a plate shape parallel to the cloth mounting surface of the table 10, and as shown in FIG. 7, when sewing, the front end portion 36s1 is a cloth feeding member (21, 22) It is captured with W and passes.

The side-stitch sewing machine 100 includes an air blow device. As shown in FIG. 6 etc., the air blowout nozzles 25 and 26 of the air blow device are provided. As shown in FIG. 9 etc., the air blowing nozzles 36 m 2 and 36 m 3 of the air blowing device are provided. The air blowout nozzles 25, 26, 36m2 and 36m3 may be the tip of a tube extended from the blower motor or may be a nozzle part connected to the tip of the tube.
The air blowing device is configured to prevent curling of the side cloth end to be sewn with respect to the cloth W placed on the table 10 and pressed by the cloth presser 36 from these nozzles 25, 26, 36 m2 and 36 m3. Blow air in the end direction (the negative direction of the Y axis).

The nozzles 36m2 and 36m3 are installed on the main cloth presser, and air is blown to the sewing start end of the cloth W (the end of the cuff of the sleeve W2 in FIG. 9) and the cloth in the vicinity (sleeve W2). It is for preventing the cloth feeding members (21, 22) from being caught in the folded state.
For this purpose, the nozzles 36m2 and 36m3 installed on the main presser foot 36m are closer to the sewing machine head 20 than the auxiliary presser foot 36s with respect to the X axis during conveyance by the presser foot conveyance device 30 of the cloth W as shown in FIG. It is fixed at a predetermined position on the negative direction side of the X axis, and moves together with the main cloth presser 36m.
In addition, a plurality of nozzles 36m2 and 36m3 installed in the main presser foot 36m are arranged in the X-axis direction. There are two in this embodiment. This is to cope with the fact that the length of the sleeve W2 is different.

The nozzles 25 and 26 have fixed positions with respect to the sewing machine head 20, and blow air from the sewing start end to the finish end of the cloth cutting knife 24 and the cloth W sent to the needle drop position to sew In order to correct the side cloth end of the object to be flat along the table 10, cut the cloth well at the correct position, and prevent sewing defects such as sewing when the cloth end is curled. is there.
For this purpose, the nozzles 25 and 26 fixed in position with respect to the sewing machine head 20 are disposed at predetermined positions in front of the sewing needle 23 (and further the cloth cutting knife 24) as shown in FIG.
Further, the plurality of nozzles 25 26 fixed in position with respect to the sewing machine head 20 are disposed at the nozzle 26 forward and the nozzle 25 rearward than the front end F for catching the cloth W of the cloth feeding members 21 and 22. Is provided. The nozzle 25 is forward of the cloth cutting knife 24 with respect to the X axis and rearward of the front end F for catching the cloth W of the cloth feeding member (21, 22). The nozzle 26 is disposed in the vicinity of the front of the front end F for catching the cloth W of the cloth feeding member (21, 22).

(Description of sewing operation)
Next, the sewing operation of the side stitch sewing machine 100 will be described. The configuration of the control system of the side stitch sewing machine 100 is shown in FIG. The control device 3 receives the signal input from the knee switch plate 2 and the cloth end sensor 4 and controls each part such as the sewing machine head 20, the cloth pressing and conveying device 30, the cloth end pressing 40, the suction and holding device 5, and the air blow device 6. The operation of the side stitch sewing machine 100 described below is realized. The cloth end sensor 4 detects that the end of the cloth W passes a predetermined position on the X axis with respect to the front end F shown in FIG.

(S1) First, after the power of the side sewing machine 100 is turned on, when the sewing preparation process is completed, the cloth presser 36 is disposed at the rear end of the sewing machine head 20 as shown in FIG. The presser foot 36m is disposed at the raised position, and the auxiliary presser foot 36s is disposed at the position retracted to the upper range of the main presser foot 36m. At the same time, the display lamp 45 provided on the first cloth end presser 40a is turned on, and the others are turned off. The cloth end pressing members 44 of all the cloth end presses 40 are in the raised state. The suction by the suction holding device 5 is in a suction state. The presser foot 27 of the sewing machine head 20 is in a raised state.
In this state, the operator places the cloth W on the table 10 in the front area of the sewing machine head 20 as shown in FIG. Since the abutment gauge 13 is provided at the edge of the table 10 in the negative direction of the Y axis, the operator installs the cloth W using the gauge 13 as a guide. The gauge 13 is provided with a mark indicating the X coordinate of the center position of the cloth end pressing member 44 of the second cloth end presser 40b, and the operator aligns the joint end W3 with the mark. The air is sucked from the suction holes 12 by the suction holding device 5, and the cloth W is sucked and held.
(S2) Next, the operator presses the knee switch plate 2. The control device 3 receives an input signal from the knee switch plate 2 and lowers the cloth end pressing member 44 of the second cloth end press 40b and extinguishes the display lamp 45 of the second cloth end press 40b, thereby the first cloth end press The display lamp 45 of 40a is turned on.
(S3) Next, the operator presses the knee switch plate 2. The control device 3 receives an input signal from the knee switch plate 2 and lowers the cloth end pressing member 44 of the first cloth end presser 40a and extinguishes the display lamp 45 of the first cloth end presser 40a. The display lamps 45 of the end clamps 40c3 and 40c4 are turned on.
(S4) Next, the operator presses the knee switch plate 2. The control device 3 receives an input signal from the knee switch plate 2 and lowers the cloth end pressing members 44 of the two third cloth end presses 40c3 and 40c4 and extinguishes the display lamps 45 of the third cloth end presses 40c3 and 40c4. And turn on the display lamps 45 of the remaining two third cloth end clamps 40c1 and 40c2.
(S5) Next, the operator presses the knee switch plate 2. The control device 3 receives an input signal from the knee switch plate 2 and lowers the cloth end pressing members 44 of the remaining two third cloth end presses 40c1 and 40c2 and the display lamps 45 of the third cloth end presses 40c1 and 40c2. The light is turned off and the presser foot 36 is moved to the front area of the sewing machine head 20.
The order of lowering the cloth end press from (S2) to (S5) can be appropriately changed by operating in a preset order.

(S6) When the presser foot 36 is moved to the front area of the sewing machine head 20 as shown in FIG. 9, the auxiliary presser foot 36s is extended as shown in FIG. 11, and the main presser foot 36m as shown in FIG. Is lowered, and the secondary presser 36s is lowered to the main presser 36m, and the presser 36 presses the cloth W. At this time, the secondary presser 36s presses the joint end W3.
(S7) When the cloth W is pressed by the cloth presser 36, the suction by the suction and holding device 5 is stopped, and the cloth end presser members 44 of all the cloth end pressers 40 are raised. The presser foot 36 moves in the direction of the sewing machine head 20 (the negative direction of the X axis). In addition, air blowing from the nozzles 25, 26, 36 m2 and 36 m3 of the air blowing device 6 is started.
(S8) When the cloth end sensor 4 detects the front end in the moving direction of the cloth W (the cuff end of the sleeve W2 shown in FIG. 12 etc.), the cloth presser 27 of the sewing machine head 20 is lowered to sew the sewing machine head 20 The edge of the cloth W cut by the cloth cutting knife 24 by the operation of the sewing needle 23 or the like while starting the rotation of the upper and lower feed belts 21, 22 and accompanying the synchronized feed of the upper and lower feed belts 21, 22 and the cloth presser 36. Stitch. As shown in FIG. 7, the front end portion 36s1 of the sub cloth presser 36s is sandwiched by the upper and lower feed belts 21 and 22 together with the cloth W while holding down the joint end W3 (S9) When the rear end in the moving direction (the bottom end of the body W1 shown in FIG. 2) is detected, the sewing operation of the sewing machine head 20 and the rotation of the upper and lower feed belts 21 and 22 are stopped after a predetermined time (several seconds) from the detection time. Then, the thread extending from the sewing end of the cloth W is cut, the cloth presser 27 of the sewing machine head 20 is lifted, the sewing is ended, and the preparation state is returned to the above (S1). In addition, the air blowing from the nozzles 25, 26, 36 m2 and 36 m3 of the air blowing device 6 is stopped.

(Other effects and effects)
According to the above embodiment, when the cloth pressing and conveying device 30 conveys the cloth W placed at the predetermined position on the table 10 in alignment with the predetermined reference position in the first axis X direction, the auxiliary cloth pressure 36s is Extend and hold the joint end W3.
Further, the leading end portion 36s1 for pressing the joint end W3 of the sub cloth presser 36s is captured together with the cloth W by the cloth feeding member (21, 22) and passes.
Therefore, it is possible to carry out cloth feeding and accurately sew while holding the joint end W3 between the sleeve W2 and the body W1 accurately in a state of being folded down in the specified direction, thereby achieving stable sewing.

  In the above (S5), the cloth presser 36 moves upward from the back of the sewing machine head 20 along the first axis X in a state where the presser foot 36 is lifted, and moves with the sewing machine head 20 in a state where the sub cloth presser 36s retracts. Avoid contact. Therefore, the main presser foot 36m can be arranged at a position close to the cloth feed member (21, 22) with respect to the second axis Y, thus pressing the cloth W by the main presser foot 36m at a position near the seam lines L1 and L2. And stable sewing is realized.

In the above (S1) to (S5), the plurality of cloth end pressing members 44 are divided sequentially at least twice, and at the same time, the operator who installs the cloth W on the table 10 is the first and then the first. In order to notify of the descending cloth end pressing member, the indicator lamp 45 corresponding to the cloth end pressing member 44 is lighted before the descent.
Therefore, the operator carefully presses the cloth W around the lowered position of the cloth end pressing member 44 while paying attention so that the hand is not pinched by the lowered cloth end pressing member 44 and descends the cloth end pressing member 44 The cloth end pressing member 44 can be made to press the cloth W which is extended in a planar good state on the table 10 and disposed with high positional accuracy.

  The curling of the end of the cloth is prevented by the air blowing device 6, and the cloth W which is flatly extended on the table 10 is captured by the cloth feeding member (21, 22) and cut by the cloth cutting knife 24 After the cloth cutting, it is possible to sew by overedging, and the sewn product can be finished with good quality and stability.

  A sewing machine head 20 having a pair of upper and lower endless belts 21 and 22 for catching and holding the cloth W as a cloth feeding member can be applied, and the cloth pressing and conveying device 30 and the air blow device 6 The cloth W can be smoothly fed in a good state. In the sewing machine head 20, the cloth W can be reliably held and fed by the synchronized feeding operation of the pair of upper and lower endless belts 21 and 22, and accurate cloth cutting and sewing can be performed.

Reference Signs List 1 gantry 2 knee switch plate 3 control device 4 cloth end sensor 5 suction holding device 6 air blow device 10 table 11 needle plate 12 suction hole 20 sewing machine head 21, 22 endless belt (cloth feed member)
23 sewing machine needle 24 cloth cutting knife 25, 26, 36m2, 36m3 nozzle 30 cloth presser transport device 36 cloth presser 36m main cloth presser 36s sub cloth presser 36s 1 tip 44 cloth end presser member 45 display lamp 100 side stitch sewing machine L1 seamline L2 Seam line U side W cloth W1 body W2 sleeve W3 joint end

Claims (9)

In a side-stitch sewing machine that continuously holds oversewing by holding a seam line under the body where the sleeves are sewn together and a seam line extending from the side of the sleeve to the cuff direction in a straight line,
A table on which to place the cloth,
A sewing machine head for sewing the cloth placed on the table;
And a presser foot conveyance device for moving the cloth on the table by having the presser foot moving in the sewing direction along the cloth placing surface of the table while pressing the cloth on the table.
The sewing machine head has a cloth feeding member for feeding the cloth in the sewing direction,
The presser foot has a main presser foot and a secondary presser foot,
The main presser comprises an elongated member which is pressed from end to end of the cloth in the sewing direction, and is supported so as to be lifted and lowered by a lift mechanism.
The secondary presser is attached to the main presser so as to move along with the main presser.
The secondary presser extends when the presser conveyance device conveys the cloth placed at the predetermined position on the table with the joint end between the sleeve and the body aligned with the predetermined reference position in the sewing direction. A side stitch sewing machine characterized by pressing the joint end.   The auxiliary presser foot is connected to the main presser foot via an elevating mechanism, and the lower end of the auxiliary presser foot is raised above the upper end of the main presser foot when retracted. Side sewing machine as described in. The tip end portion of the sub cloth presser is formed in a plate shape parallel to the cloth mounting surface of the table,
The side stitch sewing machine according to claim 1 or 2, wherein the leading end portion is captured and passed together with the cloth by the cloth feeding member.   The cloth presser moves upward from the back of the sewing machine head along the sewing direction in a raised state, and when moving, the contact with the sewing machine head is avoided in a state where the sub cloth presser retracts. The side stitch sewing machine according to any one of claims 1 to 3, wherein A plurality of cloth arrays are arranged in front of the sewing machine head along the sewing direction, and the cloth end pressing member facing the cloth end installation area from the outside is moved up and down to move the cloth from before descent to after descent Equipped with a cloth end presser that temporarily holds the cloth end,
The cloth end presser is
A first cloth end presser that holds the end of the cloth along the seam line extending from the side of the sleeve to the direction of the cuff;
A second cloth end presser for pressing the joint end;
And a third cloth end presser that holds the cloth end along the seam line under the body.
A display lamp is provided on each cloth end presser, and the plurality of cloth end presser members are divided down at least twice and sequentially lowered, and at that time, the operator who installs the cloth on the table is the first and the next The display lamp corresponding to the cloth end pressing member is turned on before the descent in order to give notice of the cloth end pressing member which is sequentially lowered, according to any one of claims 1 to 4. Side sewing machine as described in. An air blowing device is provided for blowing air in the cloth end direction so as to prevent curling of the side cloth end to be sewn with respect to the cloth placed on the table and pressed by the cloth presser. The side stitch sewing machine according to any one of items 1 to 5. A plurality of air blowout nozzles of the air blow device are provided, a part of which is installed on the main cloth presser, and another part of which is installed at a fixed position with respect to the sewing machine head,
The nozzle installed on the main cloth presser is fixed at a predetermined position on the sewing machine head side from the sub cloth presser in the sewing direction when the cloth is transported by the cloth presser conveying device, and moves together with the main cloth presser. ,
The side stitch sewing machine according to claim 6, wherein the nozzle fixed in position with respect to the sewing machine head is disposed at a predetermined position in front of the sewing needle. A plurality of nozzles arranged in the sewing direction are provided for the nozzles installed on the main presser,
The nozzle fixed in position with respect to the sewing machine head is provided with a plurality of nozzles disposed forward and backward from the front end of the cloth feeding member for catching the cloth. Side sewing machine. 9. The side stitch sewing machine according to any one of claims 1 to 8, wherein the cloth feeding member is a pair of upper and lower endless belts that catch so as to sandwich the cloth.

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