JPH0131398B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is an automatic sewing system that can automatically wrap and equip an annular rubber body around the edge of the fabric that is the waist area of pants, skirts, etc., and then sew it. Regarding machines.

(Prior art) Generally, when sewing an annular rubber body to the waist of pants or a skirt, a wide annular rubber body a as shown in Fig. 14 or multiple annular rubber bodies are sewn in parallel as shown in Fig. 15. After arranging the rubber string group b on the edge of the cloth which is the waist circumference,
As shown in FIGS. 17A and 17B, the edge of the cloth is rolled up on the inner surface of the rubber body, and then the rolled end is rolled back on the outside of the rubber body (FIG. 16A,
As shown in FIG. 7A), or as shown in FIGS. 16B and 17B, it is rolled back onto the inner surface of the rubber body and then sutured.

(Problems to be Solved by the Invention) However, such wrapping work and the work that moves on to sewing have traditionally been done by hand, which is not only time-consuming but also requires skill to master. There is.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide an automatic sewing machine that can automate a series of steps from winding work to sewing work.

(Means for Solving the Problems) In order to achieve the above object, the device of the present invention for automatically winding up a rubber body around the edge of a cloth appropriately wraps the annular cloth and the annular rubber body positioned on the inner periphery of the cloth. a traveling mechanism that causes the annular fabric to be tensioned and held and run in the circumferential direction of the annular fabric with the end edge of the annular fabric hanging down; a rubber guide mechanism having a rubber receiver disposed on the inner surface side; a rubber guide mechanism located on the other side of the held rubber body and movable forward and backward with respect to the rubber receiver, and the rubber guide mechanism is made to hang in the forward position; A cloth receiving mechanism that arranges an edge of the annular cloth under the rubber receiver and wraps the tip of the edge of the annular cloth into the rubber body, and a hanging end of the annular cloth that is located in front of the cloth receiving mechanism. A winding mechanism is provided that is movable forward and backward relative to the edge and has a plurality of guide claws that guide the edge of the hanging annular cloth inward to gradually fold it in the forward position. A rubber body automatic winding device is placed in a forward position corresponding to a needle drop portion of a sewing machine body in a sewing machine equipped with a scalpel mechanism that cuts sewing thread by a rubber-wrapped portion of the annular cloth held in the traveling mechanism, and a backward position thereof. It is attached to a station that moves back and forth along a rail to and from the station.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

1 in the figure is a base. 2 is rail 3 on base 1
A mounting table 4 provided through the mounting table 2 is a main body of a double chainstitch sewing machine having multiple needles placed and fixed on the mounting table 2. An operating rod 5a of a cylinder 5 fixed to the base 1 is connected to the mounting base 2, and by pushing and retracting the operating rod 5a, the sewing machine main body 4 and both ends of the base 1 are stopped. It is possible to move back and forth between these positions.
Further, a drive motor 6 for the sewing machine main body 4 is placed and fixed on the mounting table 2, so that the sewing machine main body 4 can be operated regardless of movement of the mounting table 2.

A station 7 is disposed on the base 1 via a rail 8 projecting forward from the bottom surface of the base 1, corresponding to each stop position of the sewing machine main body 4.
The stations 7, 7 are connected to actuating rods of cylinders 9, 9 fixed to the lower surface of the base 1, respectively, so that they can move forward and backward relative to the sewing machine body 4. Here, the forward position of the station 7 is the position where the rubber-wrapped portion 73 of the annular cloth 71 held by the traveling mechanism 15 (described later) corresponds to the needle drop part of the sewing machine body (described later), and the station 8 is moved backward. The position is the position behind the forward position. Rubber body automatic winding devices 10, 10 are mounted and fixed on each station 7, 7.

As shown in FIGS. 2 and 3, the automatic rubber body winding devices 10, 10 move the sewing cylinder 11 in a vertical plane including the needle drop portion 12 of the sewing machine body 4, that is, in FIG. A traveling mechanism 15 has locking rollers 12, 13, and 14 arranged in front, rear, and downward positions as shown in FIG. , a rubber guide mechanism 16 provided to be movable forward and backward with respect to the line, and a cloth receiving mechanism 17 facing the rubber guide mechanism 16 and movable forward and backward with respect to the rubber guide mechanism 16.
and the hanging roller 1 in front of this cloth receiving mechanism 17.
3, a winding mechanism 18 is provided so as to be movable forward and backward along a line connecting the surroundings of the locking rollers 12 and 13.
It is equipped with

Here, the traveling mechanism 15 and the rubber guide mechanism 16 are arranged on the station 7, and the cloth receiving mechanism 17 and the winding mechanism 18 are arranged on the movable base 3 connected to the station 7 via a slide rod 38.
The operating rod 39a side of an air cylinder 39 fixed to the station 7 is connected to the movable base 37, so that the movable base 37 can move forward and backward relative to the station 7.

As shown in FIG. 4, the traveling mechanism 15 connects the rear and lower rollers 12, 14 of the three hanging rollers 12, 13, 14 to the rotating shaft 21 of the station 7 via connecting members 22, 23. The rotating shaft 21 connects to the operating rod 24a of an air cylinder 24 fixed to the station 7 via a link 22.
When the actuating rod 24a moves up and down, the rollers 12 and 14 move together around the rotation shaft 21, and the three locking rollers 12, 13, and 14 move together. The loop circumference is designed to change. Further, in the traveling mechanism 15, a rotary roller 26 that can be rotationally driven by a motor 25 is located at a position where the rear latch roller 12 moves when the actuating rod 24a of the cylinder 24 is moved upward. Arranged so that it can be rotated.

The rubber guide mechanism 16 includes a holding base 2 erected from the station 7 as shown in FIGS. 3 and 5.
7, a rubber guide 29 having a rubber pedestal 28 extending from one end via an S-shaped curved portion 28a is slidably provided. The structure that allows the rubber guide 29 to freely slide with respect to the holding table 27 is as shown in FIGS. 6A and 6B.
The rubber guide 29 is connected to the holder base 30 placed on the holder base 30 via the support shaft 31, and this holder base 30
An inverted L-shaped link 100 is connected to the link 100, and the lower end of this link 100 is inserted into the slide pin 32 attached to the holding base 27 with a gap as shown in the figure.
One end of this slide pin 32 and the air cylinder 33
The actuating rod 34 is connected by a connecting link 35. In addition, the inverted L-shaped link 100 and the holder base 30 are rotatably connected via a support shaft 101 at a corner of the link 100, and a long hole 35 is provided at the tip of the corner. Pin shaft 3 protruding from the side of the holder base at 35
6 enters, and as the actuating rod 34 moves forward, the link 100 tilts and moves the rubber guide 29 upward.

As shown in FIG. 7A, the cloth receiving mechanism 17 includes cloth guides 40, 4 which are curved to have a U-shaped cross section on both sides.
1, the cloth guide 40 on one side and the cloth guide 41 on the other side are connected via a support shaft 42, and the cloth guide 40 on one side is It is connected to the operating rod 43a of the air cylinder 43 attached to the movable base 37 via a link 44, and is rotatable about the support shaft 42 as shown in FIG. 7B with respect to the cloth guide 41 on the other side. It is something that has become popular.

The winding mechanism 18, as shown in FIG. 8A,
It has three guide claws 45, 46, 47, and the guide claw 45 located at the farthest end in the drawing is attached to a support shaft 49 at the tip of a projecting body of a holder base 48 whose base end side is fixed to a movable base 37.
At the same time, the remaining two guide claws 46 and 47 are rotatably attached to the protrusion base end side of the holder base 48 via a support shaft 50. , 50 are operating rods 51 of air cylinders 51, 52 fixed to the holder base 48.
a, 52a via links 53, 54,
As shown in FIG. 8b, each guide claw 45, 46, 4
7 can be rotated. The guide claws 45, 46, and 47 are arranged with different angles, and the tip of the guide claws has a smaller degree of curvature toward the cloth receiving mechanism 17.

Note that the female mechanism 60 built into the sewing machine body 4
In this method, the sewn upper thread and lower thread are cut at the same time when sewing is finished, and since this was already disclosed in Utility Model Application No. 59-3755, the details will be omitted.

Next, the operation of the automatic sewing machine having such a configuration will be explained.

First, as shown in Fig. 9, the rubber body automatic winding device 1
An annular rubber body 70 is hung across the hanging rollers 12, 13, 14 of 0 and the rubber holder 28 of the rubber guide mechanism 16, and the waist part of pants or the like is wrapped around the annular rubber body 70. The end of the barrel annular cloth 71 is hooked. In this hanging, the end edge 71a of the annular cloth is hung so as to hang from the hanging rollers 12, 13, and 14 with a predetermined width necessary for wrapping the annular rubber body.

In this state, turn on the rubber body automatic winding device 10.
When the rotating roller 26 of the traveling mechanism 15 starts rotating, the cylinder 24 of the traveling mechanism 15 operates, and the annular cloth 71 becomes taut. comes into rolling contact with the rotating roller 26, and the annular rubber body 70 and the annular cloth 71 begin to rotate integrally.

By the way, just before the annular rubber body 70 and the annular cloth 71 begin to turn, the cloth receiving mechanism 17 and the winding mechanism 18 touch the hanging edge 71a of the annular cloth 71.
At this time, one cloth guide 40 of the cloth receiving mechanism 17 is in a downward movement state.

When the annular rubber body 70 and the annular cloth 71 turn, the cloth receiving mechanism 17 and the winding mechanism 18 move toward the end edge 71a of the annular cloth 71 as shown in FIG. Receiver holder 6
2 on the lower surface side of the rubber holder 28 of the rubber guide mechanism 16, one of the cloth guides 40 is moved upward (FIG. 11), and the winding mechanism 1
8, the guide claws 45, 46, and 47 are sequentially moved upward from the rear to guide the end edge 71a of the annular cloth 71 around the annular rubber body 70 (Fig. The rolled-up state is maintained to form the rubber-wrapped portion 73. Incidentally, the wrapped state is created by the winding mechanism 18, and can also be achieved by this mechanism alone, that is, without the cloth receiving holder 62. This includes guide claws 45, 46,
47 is arranged along the running direction of the annular cloth 71, so that the cloth edge 71a can overcome the tension that tends to return to its original drooping state, and the cloth edge 71a is always arranged in the winding direction. This is because the portion 71a is guided.

This winding is completed by rotating the rotating roller 26 for a set time and then stopping it.

The operation procedure for wrapping the annular rubber body 70 around the annular cloth 71 is not limited to the above-mentioned explanation. The holder 62 of the cloth receiving mechanism 17 and the guide claws 45, 46, 47 of the winding mechanism 18 are moved forward to wind the edge 71a around the annular rubber body 70, and then, in this state, the annular rubber body 70 is rolled up. Even if the annular cloth 71 is rotated, the end edge 71 of the annular cloth 71 is
a can be wrapped around the annular rubber body 70.

When the rotating roller 26 stops, the presser foot 63 and the forced feed roller 64 of the sewing machine main body 4 move upward and enter the sewing receiving state.

Then, the station 7 moves to the side of the sewing machine main body 4, guides and stops the rubber-wrapped part 73 so that the sewing machine needle falls, as shown in FIG.
And as the forced feed roller 64 moves downward,
Along with this downward movement, the sewing machine main body 4 is driven, and the rubber-wrapped portion 73 is sewn. Then, at the stage where the rubber wrapped part 73 is sewn leaving the set length,
A micro switch (not shown) provided at a predetermined position of the traveling mechanism 15 is designed to detect the sewing part, and by this detection, the rubber holder 28 that becomes an obstacle to sewing is removed, and the fabric of the body holder 62 is removed. The guide 40 and each guide pawl 4 of the winding mechanism 18
5, 46, and 47 are moved downward to separate them from the unsewn portion. Note that when the cloth guide 40 moves downward, if the rubber pedestal 28 is left in the same state, it will come into contact with the curved part 28a of the rubber pedestal 28. We are making sure that there is no hindrance to the withdrawal of the government.

When the micro switch detects this, the set needle movement counter operates, and when the number of stitches counted by the counter has been sewn, the tension around the loop of the travel mechanism 15 is released, and the sewing machine main body 4 also stops driving. The upper thread and lower thread are cut simultaneously by the female mechanism 60. After this cutting, the presser foot 63 and forced feed roller 64 of the sewing machine main body 4 move upward, and the station 7 moves to the retracted position, detaching from the sewing machine main body 4 and returning to its original position.

At this time of return, the rubber pedestal 28 returns to its original state, and the movable base 26 also returns to its original position.
A standby state is entered in which preparations are made for hanging the next hanging object.

By the way, while the workpieces 70 and 71 on one station 7 are being sewn, the workpieces 70 and 71 wrapped in rubber are attached to the other station 7.
When sewing of the objects 70 and 71 at one station 7 is completed, the sewing machine main body 4 moves on the base 1 and stops at the position of the other station 7. The upper workpieces 70 and 71 are sewn in the same manner as described above, and while this station 7 is engaged in sewing, the first station 7 is made to wait for the rubber-wrapped workpiece. The main body 4 of the sewing machine is alternately operated to sew at the stations 7, 7, as shown in FIG.

With this configuration, the annular rubber body 70 can be automatically wrapped around the end edge 71a of the annular cloth 71, and the rubber-wrapped portion 73 in this wrapped state can be guided to the needle drop part of the sewing machine body. After sewing, the sewing machine body 4
Automatic sewing can be performed until the sewing thread is cut by the female mechanism 60 and sewing is completed. Also, the sewing machine body 4
Two rubber body automatic winding devices 10 are installed per one unit.
Since the sewing machine is configured to have multiple sewing machines, one sewing machine can be operated effectively.

Incidentally, the number of rubber body automatic winding devices 10 that can be installed in the sewing machine main body 4 can be increased to increase the operating rate of the sewing machine.

Further, in the above embodiment, the rubber body automatic winding device 10 is installed on the station 7 provided via the rail 8 on the base 1 that supports the sewing machine body 4, but the present invention is not limited to this. It may be placed on a station provided directly through a rail, or it may be placed within a plane that includes the needle drop of the sewing machine main body.

Further, in the above embodiment, the annular rubber body 70 is described as a body to be rolled up, but a group of a plurality of rubber bodies arranged in parallel may be used as a body to be rolled up. In this case, grooves for positioning each rubber body may be formed in each roller of the traveling mechanism to prevent rotational misalignment.

Further, the present invention is not limited to the rubber-wrapped state of the above-described embodiment, but may also be such that the cloth end edge 71a is wound back inside the annular rubber body 70, as shown in FIG. 16B. In this case, the guide claws 45, 46, 47 of the winding mechanism 18 are arranged to wind inside the annular rubber body 70, and one cloth guide 40 of the cloth receiving mechanism 17 is positioned below the annular rubber body.
All you have to do is hold the rolled up part.

(Effects of the Invention) As described above, the automatic sewing machine of the present invention is capable of the work of hooking a circular rubber body and a circular cloth to the rubber body automatic winding device, and the operation of hooking a completed sewing product to the rubber body automatic winding device. If you only do the work of removing it from the
The work process of wrapping a ring-shaped rubber body around the edge of the ring-shaped cloth, the work process of sewing the wrapped portion of this wrapped state, and the process of cutting the sewing thread at the end of sewing can all be automated based on a series of flows. Therefore, conventionally,
This eliminates the trouble of having to wrap the rubber in the pre-sewing stage, which is a problem when this type of sewing is done by hand, and the trouble of manually feeding the rubber-wrapped part during sewing. Moreover, the difficulty of these operations, which require skill or require constant attention and strain the nerves, can be eliminated at once, and the workability of this type of sewing can be improved. Furthermore, the present invention automates a series of work processes that were conventionally manual and time-consuming, thereby improving work efficiency and improving the operating rate of the sewing machine, that is, productivity.

[Brief explanation of drawings]

1 to 13 show an embodiment of the present invention, in which FIG. 1 is a schematic front view, FIG. 2 is a schematic side view,
Figure 3 is a perspective view, Figure 4 is a front view showing the traveling mechanism, Figure 5 is a schematic side view of the same, Figures 6A and B are side views of the rubber guide mechanism, and Figures 7A and B are cloth holders. 8A and 8B are side views of the winding mechanism; FIGS. 9 and 10 are perspective views; FIGS. 11 and 12 are side views partially shown in section;
The figure is a perspective view, FIGS. 14 and 15 are perspective views showing the annular rubber body, and FIGS. 16A and B and 17A and B are sectional views showing the rolled-up structure. 4... Sewing machine body, 15... Travel mechanism, 16...
...Rubber guide mechanism, 17... Cloth receiving mechanism, 18...
... Winding mechanism, 28 ... Rubber receiver, 45, 4
6, 47... Guide claw, 70... Annular rubber body,
71... Annular cloth, 71a... Hanging end edge of the annular cloth.

Claims (1)

[Claims] 1. With the annular cloth and the annular rubber body positioned on the inner circumferential side of the annular cloth held under appropriate tension, and with the end edges of the annular cloth hanging down, a traveling mechanism for causing the held rubber body to travel; a rubber guide mechanism having a rubber receiving body facing from one side of the held rubber body and disposed on the inner surface side of the rubber body; The end edge of the hanging annular cloth is placed below the rubber receiver in the advanced position, and the tip of the end edge of the annular cloth is moved forward and backward with respect to the rubber receiver. A cloth receiving mechanism that wraps around the body side, and a cloth receiving mechanism that is positioned in front of the cloth receiving mechanism and can move forward and backward with respect to the hanging edge of the circular cloth, and in the forward position, the cloth receiving mechanism that wraps the hanging cloth inward. a rubber body automatic winding device comprising: a winding mechanism having a plurality of guide claws for guiding the cloth to be folded gradually; An automatic sewing machine characterized in that the automatic sewing machine is attached to a station that moves forward and backward along a rail between a forward position corresponding to a needle drop portion of a sewing machine body and a backward position on the rear side thereof.